KR101846120B1 - Pharmaceutical composition for preventing or treating neurodegenerative disease comprising 6-formyl umbelliferone as active ingredient - Google Patents
Pharmaceutical composition for preventing or treating neurodegenerative disease comprising 6-formyl umbelliferone as active ingredient Download PDFInfo
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- KR101846120B1 KR101846120B1 KR1020170023932A KR20170023932A KR101846120B1 KR 101846120 B1 KR101846120 B1 KR 101846120B1 KR 1020170023932 A KR1020170023932 A KR 1020170023932A KR 20170023932 A KR20170023932 A KR 20170023932A KR 101846120 B1 KR101846120 B1 KR 101846120B1
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- KR
- South Korea
- Prior art keywords
- formyl
- disease
- bace1
- umbelliferone
- active ingredient
- Prior art date
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- 239000004480 active ingredient Substances 0.000 title claims abstract description 14
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- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
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Abstract
Description
본 발명은 6-포르밀 엄벨리페론을 유효성분으로 포함하는 퇴행성 신경질환 예방 또는 치료용 약제학적 조성물에 관한 것이다.The present invention relates to a pharmaceutical composition for preventing or treating degenerative neurological diseases comprising 6-formylmaveliferone as an active ingredient.
전 세계적으로 고령인구가 증가하고 있으며, 우리나라도 2000년 65세 이상 노인 인구가 전체인구의 7% 이상인 고령화 사회로 이미 진입하였으며, 2026년에는 노인 인구가 차지하는 비율이 전체의 20%를 넘어서는 초고령 사회로 진입할 것이라고 전망 (2015년 기획재정부 2060년 장기재정전망)되고 있는 상황에서 고령인구의 노인성 질병의 해결이 시급한 사회적 문제로 대두되고 있다.The elderly population of the world is increasing, and in 2000, the elderly population aged 65 and over entered the aging society, which is more than 7% of the total population. In 2026, the elderly population accounted for over 20% (2060 long-term financial prospect in 2015), the solution of geriatric diseases of the elderly population is emerging as an urgent social problem.
특히 노인성 치매질환의 약 절반을 차지하는 알츠하이머 질병은 현재로써는 유효한 치료방법과 예방방법이 없으며, 고령화 사회에 있어서 가장 시급히 해결해야 할 신경질환 중의 하나이기에 연구가 많이 요구되는 분야이다. 알츠하이머병의 병태생리학적 메커니즘은 아직 밝혀져 있지 않지만 콜린성 가설과 아밀로이드 가설이 관련되어 있다. 콜린성 가설은 뇌의 어떤 부위에 아세틸콜린의 농도가 현저히 낮아짐으로서 알츠하이머 질병이 일어난다는 것이다(Zarotsky 등, 2003; Tricco 등, 2012). 이에 따르면, 아세틸콜린 에스테라제 (acetylcholinesterase, AChE) 와 부티릴콜린 에스테라제 (butyrylcholinesterase, BChE)에 의해서 가수분해되는 신경전달물질인 아세틸콜린이 알츠하이머 질병의 중요한 원인일 수 있고(Hebert 등, 1995; Thies와 Bleiler, 2012; Zarotsky 등, 2003), 따라서, 아세틸콜린 에스테라제와 부티릴콜린 에스테라제 저해제는 알츠하이머 질병의 치료 약물로서 사용될 수 있다는 가설이다(Adams 등, 1984).In particular, Alzheimer's disease, which accounts for about half of the senile dementia diseases, is currently one of the most important neurological diseases to be resolved in the aging society. The pathophysiological mechanism of Alzheimer's disease is not yet known, but the cholinergic hypothesis and the amyloid hypothesis are implicated. The cholinergic hypothesis is that Alzheimer's disease is caused by a markedly lower concentration of acetylcholine in certain parts of the brain (Zarotsky et al., 2003; Tricco et al., 2012). According to this, acetylcholine, a neurotransmitter hydrolyzed by acetylcholinesterase (AChE) and butyrylcholinesterase (BChE), may be an important cause of Alzheimer's disease (Hebert et al., 1995 ; Thies and Bleiler, 2012; Zarotsky et al., 2003). Thus, the hypothesis that acetylcholinesterase and butyrylcholinesterase inhibitors can be used as therapeutic agents for Alzheimer's disease (Adams et al., 1984).
또한, 아밀로이드 가설에서는 뇌에 아밀로이드 (amyloid beta: Aβ) 베타 펩티드가 축적하여 알츠하이머 질병이 일어난다는 것이다(Querfurth와 Laferla, 2010). 아밀로이드 베타 펩티드는 알츠하이머 질병의 중요한 원인으로 알려져 있을 뿐만 아니라 파킨슨, 당뇨병과 같은 다양한 질병들의 원인으로도 알려져 있다 (Zhao 등, 2004; Eichner 등, 2011). 이러한 질환들에서 나타나는 현상으로는 정상적으로는 수용성이어야 하는 아밀로이드 단백질이 플라크 (plaque) 형태로 응집되면 뇌의 신경세포에서 정상적인 뉴런기능을 간섭함으로 인해 알츠하이머 질병을 유발하는 것으로 보고되고 있다 (Lambert 등, 1998; Kirkitadze 등, 2002; Kim 등, 2003; Kounnas 등, 2010).In addition, the amyloid hypothesis is that amyloid beta (Aβ) beta peptide accumulates in the brain, resulting in Alzheimer's disease (Querfurth and Laferla, 2010). Amyloid beta peptides are not only known to be an important cause of Alzheimer's disease, but are also known to cause various diseases such as Parkinson's and diabetes (Zhao et al., 2004; Eichner et al., 2011). It has been reported that amyloid proteins that normally should be water-soluble, when aggregated into plaque form, normally interfere with normal neuronal functions in brain neurons, leading to Alzheimer's disease (Lambert et al., 1998 Kim et al., 2003; Kounnas et al., 2010).
아밀로이드 베타 펩티드는 아밀로이드 전구체 단백질 (amyloid precursor protein, APP)이 아스파르테이트 단백효소 (aspartate protease)인 감마 세크레타제 (γ-secretase)와 베타 세크레타제 (β-secretase, BACE1)의 작용을 받아 생성된다. 아밀로이드 가설에서는 산발적인 알츠하이머 질병을 가진 뇌에서는 베타 세크레타제 (BACE1)활성이 증가된다는 것이다(Yang 등, 2003; Holsinger 등, 2002). BACE1 넉-아웃 마우스는 아밀로이드 베타 펩티드를 생성할 수 없다는 결과로부터, BACE1 만이 APP를 절단하고 아밀로이드 베타 펩티드를 생성한다는 것으로 보고되었다(McConlogue 등, 2007). BACE1에 의해서 아밀로이드 베타 펩티드가 과잉 생성되면 신경세포의 퇴행화를 가져오는 독성을 지닌 미세 섬유화 (fibril)가 된다는 보고도 있다.The amyloid beta peptide is produced by the amyloid precursor protein (APP) under the action of the aspartate protease gamma-secretase and beta-secretase (BACE1) . In the amyloid hypothesis, beta-secretase (BACE1) activity increases in brain with sporadic Alzheimer's disease (Yang et al., 2003; Holsinger et al., 2002). It was reported that BACE1 knock-out mice can not produce amyloid beta peptides, suggesting that only BACE1 cleaves APP and produces amyloid beta peptides (McConlogue et al., 2007). It has been reported that BACE1 produces fibrils with excess toxicity of amyloid beta peptide, which leads to degeneration of nerve cells.
알츠하이머 질병을 치료하기 위한 약물로서, 아세틸콜린 에스테라제의 저해제로 알려진 타크린(THA, 흑색) 및 도네페질(donepezil, 적색)과, ACE1의 저해제로 알려진 QUD 및 TMF가 있으나, 이들 약물은 효과가 뛰어나지 않거나, 구역질, 구토, 설사가 유발되는 부작용이 존재한다는 문제가 있어, 효과가 뛰어나면서 부작용이 적은 약물의 개발이 시급한 실정이다. Drugs for treating Alzheimer's disease include tacrine (THA, black) and donepezil (red), known as inhibitors of acetylcholinesterase, and QUD and TMF, known as inhibitors of ACE1, There is a problem that there are side effects that are caused by nausea, vomiting and diarrhea. Therefore, it is urgent to develop drugs having excellent effects and few side effects.
본 발명의 목적은 6-포르밀 엄벨리페론(6-formyl umbelliferone)을 유효성분으로 포함하는 퇴행성 신경질환 예방 또는 치료용 약제학적 조성물을 제공하는 것이다. It is an object of the present invention to provide a pharmaceutical composition for preventing or treating degenerative neurological diseases comprising 6-formyl umbelliferone as an active ingredient.
본 발명의 또 다른 목적은 6-포르밀 엄벨리페론(6-formyl umbelliferone)을 유효성분으로 포함하는 퇴행성 신경질환의 예방 또는 개선용 건강기능식품을 제공하는 것이다. It is still another object of the present invention to provide a health functional food for preventing or ameliorating a degenerative neurological disease comprising 6-formyl umbelliferone as an active ingredient.
상기 목적을 달성하기 위하여, 본 발명은 하기 화학식 1의 구조를 가지는 6-포르밀 엄벨리페론(6-formyl umbelliferone)을 유효성분으로 포함하는 퇴행성 신경질환의 예방 또는 치료용 약제학적 조성물을 제공한다.In order to achieve the above object, the present invention provides a pharmaceutical composition for preventing or treating degenerative neurological diseases comprising 6-formyl umbelliferone having the structure represented by the following formula (1) as an active ingredient .
[화학식 1][Chemical Formula 1]
본 발명의 일 실시예에 있어서, 상기 6-포르밀 엄벨리페론은 BACE1(beta-secretase 1) 및 콜린에스테라제의 활성을 억제하여 베타-아밀로이드 플라크의 생성을 억제하는 것일 수 있다. In one embodiment of the present invention, the 6-formylambeliferone may inhibit the activity of BACE1 (beta-secretase 1) and cholinesterase to inhibit the formation of beta-amyloid plaques.
본 발명의 일 실시예에 있어서, 상기 퇴행성 신경질환은 치매, 알츠하이머병, 헌팅턴병 및 파킨슨병으로 이루어진 군으로부터 선택되는 어느 하나인 것일 수 있다. In one embodiment of the present invention, the degenerative neurological disease may be any one selected from the group consisting of dementia, Alzheimer's disease, Huntington's disease, and Parkinson's disease.
또한, 본 발명은 하기 화학식 1의 구조를 가지는 6-포르밀 엄벨리페론(6-formyl umbelliferone)을 유효성분으로 포함하는 퇴행성 신경질환의 예방 또는 개선용 건강기능식품을 제공한다. The present invention also provides a health functional food for preventing or ameliorating a neurodegenerative disease comprising 6-formyl umbelliferone having the structure represented by the following formula (1) as an active ingredient.
[화학식 1][Chemical Formula 1]
본 발명에 따른 6-포르밀 엄벨리페론(6-formyl umbelliferone)은 BACE1 및 콜린에스테라제 효소의 활성을 현저하게 억제하여 퇴행성 신경질환의 중요 인자로 알려진 아밀로이드 베타 펩티드의 생성을 억제함으로써 퇴행성 신경질환의 치료에 유용하게 사용될 수 있다. The 6-formyl umbelliferone according to the present invention significantly inhibits the activity of BACE1 and cholinesterase enzymes, thereby inhibiting the production of amyloid beta peptide, which is known to be an important factor in degenerative neurological diseases, Can be usefully used for the treatment of diseases.
도 1은 엄벨리페론(A), 6-포르밀 엄벨리페론(B) 및 8-포르밀 엄벨리페론(C)의 아세틸 콜린에스테라제의 억제 효과를 나타낸 것이다.
도 2는 엄벨리페론(A), 6-포르밀 엄벨리페론(B) 및 8-포르밀 엄벨리페론(C)의 부티릴콜린 에스테라제의 억제 효과를 나타낸 것이다.
도 3은 엄벨리페론(A), 6-포르밀 엄벨리페론(B) 및 8-포르밀 엄벨리페론(C)의 BACE1의 억제 효과를 나타낸 것이다.
도 4는 6-포르밀 엄벨리페론의 BACE1의 활성 억제 효과를 Lineweaver-Burk와 Dixon 플롯으로 나타낸 것이다.
도 5는 8-포르밀 엄벨리페론의 BACE1의 활성 억제 효과를 Lineweaver-Burk와 Dixon 플롯으로 나타낸 것이다.
도 6은 엄벨리페론(황색), 6-포르밀 엄벨리페론(청색), 8-포르밀 엄벨리페론(녹색), 아세틸콜린 에스테라제의 저해제로 알려진 타크린(THA, 흑색) 및 도네페질(donepezil, 적색)에 대하여 아세틸콜린 에스테라제의 활성부위와의 분자 도킹 모델을 나타낸 것이다.
도 7은 엄벨리페론(A), 6-포르밀 엄벨리페론(B), 8-포르밀 엄벨리페론(C), 아세틸콜린 에스테라제의 저해제인 타크린(THA, D) 및 도네페질(donepezil, E)과 아세틸콜린 에스테라제와의 리간드 상호작용에 대한 모식도를 나타낸 것이다.
도 8은 엄벨리페론(황색), 6-포르밀 엄벨리페론(청색), 8-포르밀 엄벨리페론(녹색), BACE1의 저해제로 알려진 QUD(적색) 및 TMF(흑색)에 대하여 BACE1의 활성부위와의 분자 상호작용을 나타낸 것이다.
도 9는 엄벨리페론(A), 6-포르밀 엄벨리페론(B), 8-포르밀 엄벨리페론(C), BACE1의 저해제인 타크린(THA, D) 및 도네페질(donepezil, E)과 BACE1과의 리간드 상호작용에 대한 모식도를 나타낸 것이다. Figure 1 shows the inhibitory effect of acetylcholinesterase on umbelliferone (A), 6-formylambeliferone (B) and 8-formylambelliferone (C).
2 shows the inhibitory effect of butylyl cholinesterase on umbelliferone (A), 6-formylambeliferone (B) and 8-formylambelliferone (C).
Fig. 3 shows the inhibitory effect of BACE1 on umbelliferone (A), 6-formylambeliferone (B) and 8-formylambelliferone (C).
Figure 4 shows Lineweaver-Burk and Dixon plots of the inhibitory effect of 6-formylmaveliferone on BACEl activity.
Figure 5 shows Lineweaver-Burk and Dixon plots of the inhibitory effect of 8-formyl mambelliferone on BACEl activity.
FIG. 6 is a graph showing the results of the determination of tacrine (THA, black), known as an inhibitor of acetylcholinesterase (THA, black) and dodecylbenzene A model of molecular docking with the active site of acetylcholinesterase for the phenol (donepezil, red) is shown.
FIG. 7 is a graph showing the effect of the inhibitors of amberlyferon (A), 6-formylambeliferone (B), 8-formylambelliferone (C), acetylcholinesterase inhibitor tacrine (THA, D) (donepezil, E) and acetylcholinesterase, respectively.
Figure 8 shows that BACE1 (red) and TMF (black), which are known as inhibitors of BACEl, and TMF (black), are known to be inhibitors of BACE1 Molecule interaction with the active site.
FIG. 9 is a graph showing the results of immunohistochemical staining for amberlycerol (A), 6-formylambeliferone (B), 8-formylambelliferone (C), tacrine (THA, D) ) And BACE1. ≪ / RTI >
본 발명은 하기 화학식 1의 구조를 가지는 6-포르밀 엄벨리페론(6-formyl umbelliferone)을 유효성분으로 포함하는 퇴행성 신경질환의 예방 또는 치료용 약제학적 조성물에 관한 것이다. The present invention relates to a pharmaceutical composition for the prevention or treatment of neurodegenerative diseases comprising 6-formyl umbelliferone having the structure represented by the following formula (1) as an active ingredient.
[화학식 1][Chemical Formula 1]
본 발명의 조성물을 의약품으로 사용하는 경우, 6-포르밀 엄벨리페론을 유효성분으로 포함하는 약제학적 조성물은 임상투여 시에 다양한 하기의 경구 또는 비경구 투여 형태로 제제화되어 투여될 수 있으나, 이에 한정되는 것은 아니다.When the composition of the present invention is used as a medicament, the pharmaceutical composition comprising 6-formyl ebbeliperone as an active ingredient may be formulated into various oral or parenteral dosage forms at the time of clinical administration, But is not limited thereto.
경구 투여용 제형으로는 예를 들면 정제, 환제, 경/연질 캅셀제, 액제, 현탁제, 유화제, 시럽제, 과립제, 엘릭시르제 등이 있는데, 이들 제형은 유효성분 이외에 희석제(예: 락토즈, 덱스트로즈, 수크로즈, 만니톨, 솔비톨, 셀룰로즈 및/ 또는 글리신), 활택제(예: 실리카, 탈크, 스테아르산 및 그의 마그네슘 또는 칼슘염 및/또는 폴리에틸렌 글리콜)를 포함하고 있다. 정제는 또한 마그네슘 알루미늄 실리케이트, 전분 페이스트, 젤라틴, 메틸셀룰로즈, 나트륨 카복시메틸셀룰로즈 및/또는 폴리비닐피롤리딘과 같은 결합제를 포함할 수 있으며, 경우에 따라 전분, 한천, 알긴산 또는 그의 나트륨 염과 같은 붕해제 또는 비등 혼합물 및/또는 흡수제, 착색제, 향미제, 및 감미제를 포함할 수 있다.Examples of the formulations for oral administration include tablets, pills, light / soft capsules, liquids, suspensions, emulsions, syrups, granules and elixirs. These formulations may contain, in addition to the active ingredient, a diluent (e.g., lactose, dextrose, Silica, talc, stearic acid and its magnesium or calcium salts and / or polyethylene glycols), in addition to the active ingredient (s). Tablets may also contain binders such as magnesium aluminum silicate, starch paste, gelatin, methylcellulose, sodium carboxymethylcellulose and / or polyvinylpyrrolidine and may optionally contain additives such as starch, agar, alginic acid or its sodium salt A disintegrating or boiling mixture and / or an absorbent, a colorant, a flavoring agent, and a sweetening agent.
본 발명의 6-포르밀 엄벨리페론을 유효성분으로 포함하는 약제학적 조성물은 비경구 투여할 수 있으며, 비경구 투여는 피하주사, 정맥주사, 근육 내 주사 또는 흉부 내 주사를 주입하는 방법에 의한다. 이때, 비경구 투여용 제형으로 제제화하기 위하여 6-포르밀 엄벨리페론을 유효성분으로 포함하는 약제학적 조성물을 안정제 또는 완충제와 함께 물에 혼합하여 용액 또는 현탁액으로 제조하고, 이를 앰플 또는 바이알 단위 투여형으로 제조할 수 있다. 상기 조성물은 멸균되고/되거나 방부제, 안정화제, 수화제 또는 유화 촉진제, 삼투압 조절을 위한 염 및/또는 완충제 등의 보조제, 및 기타 치료적으로 유용한 물질을 포함할 수 있으며, 통상적인 방법인 혼합, 과립화 또는 코팅 방법에 따라 제제화할 수 있다.The pharmaceutical composition comprising the 6-formyl mambelliferone of the present invention as an active ingredient can be administered parenterally, and parenteral administration can be carried out by injecting subcutaneous injection, intravenous injection, intramuscular injection, or intrathoracic injection All. In this case, in order to formulate a formulation for parenteral administration, a pharmaceutical composition containing 6-formylmaveliferone as an active ingredient is mixed with water or a stabilizer or a buffer to prepare a solution or suspension, which is then administered in an ampule or vial unit Can be manufactured. The compositions may comprise sterilized and / or contain adjuvants such as preservatives, stabilizers, wettable or emulsifying accelerators, salts for controlling osmotic pressure and / or buffers, and other therapeutically useful substances, Or may be formulated according to the coating method.
또한, 본 발명의 조성물의 인체에 대한 투여량은 환자의 나이, 몸무게, 성별, 투여형태, 건강상태 및 질환 정도에 따라 달라질 수 있으며, 몸무게가 60 ㎏인 성인 환자를 기준으로 할 때, 일반적으로 0.001 ~ 1,000 ㎎/일이며, 바람직하게는 0.01 ~ 500 ㎎/일이며, 의사 또는 약사의 판단에 따라 일정시간 간격으로 1일 1회 내지 수회로 분할 투여할 수도 있다.The dose of the composition of the present invention to the human body may be varied depending on the age, body weight, sex, dosage form, health condition, and disease severity of the patient. When the patient is 60 kg body weight, And may be 0.01 to 500 mg / day, preferably 0.01 to 500 mg / day, and may be administered once or several times a day at regular intervals according to the judgment of a doctor or pharmacist.
본 발명의 6-포르밀 엄벨리페론이 상기와 같은 퇴행성 신경질환의 예방 및 개선을 위해 이용되기 위해서는, 식품학 또는 약제학적 분야에서 공지된 다양한 방법에 의해 제조될 수 있으며 그 자체 또는 식품학적으로 허용되는 담체, 부형제, 희석제 등과 혼합하여 경구로 섭취할 수 있는 어떤 식품 형태로도 제조될 수 있다. 바람직하게는 음료, 환, 과립, 정제 또는 캅셀 형태이다.In order for the 6-formyl mambelliferone of the present invention to be used for prevention and improvement of such degenerative neurological diseases as described above, it may be prepared by various methods known in the field of food science or pharmacology, And may be prepared in any food form that can be ingested orally by mixing with a carrier, excipient, diluent or the like. Preferably in the form of beverage, ring, granule, tablet or capsule.
본 발명의 건강 기능 식품은, 식품 제조 시에 통상적으로 첨가되고 식품학적으로 허용되는 성분을 더 포함할 수 있다. 예컨대, 음료수로 제조되는 경우에는 본 발명의 6-포르밀 엄벨리페론 이외에 구연산, 액상과당, 설탕, 포도당, 초산, 사과산, 과즙 등에서 하나 이상의 성분을 추가로 포함시킬 수 있다.The health functional food of the present invention may further comprise ingredients that are conventionally added at the time of food production and which are pharmaceutically acceptable. For example, in the case of beverage preparation, one or more ingredients such as citric acid, liquid fructose, sugar, glucose, acetic acid, malic acid, juice and the like may be further contained in addition to the 6-formylmaveliferone of the present invention.
본 발명에 따른 건강기능식품의 유효성분으로 포함될 수 있는 양은 퇴행성 신경질환의 예방 및 개선을 원하는 사람의 연령, 성별, 체중, 상태, 질병의 증상에 따라 적절히 선택될 수 있으며, 바람직하게는 성인기준 1일 0.01 g 내지 10.0 g 정도로 포함되는 것이 좋으며, 이러한 함량을 갖는 건강 기능 식품을 섭취함으로써 퇴행성 신경질환의 예방 및 개선 효과를 얻을 수 있다.The amount that can be included as an active ingredient of the health functional food according to the present invention can be appropriately selected according to the age, sex, weight, condition, and symptom of a person who wants to prevent or improve the neurodegenerative disease, 0.01 g to 10.0 g per day. It is possible to obtain the effect of preventing and improving the degenerative neurological disease by ingesting the health functional food having such a content.
이하, 본 발명을 실시예를 통하여 더욱 상세히 설명하기로 한다. 이들 실시예는 본 발명을 보다 구체적으로 설명하기 위한 것으로서, 본 발명의 범위가 이들 실시예에 한정되는 것은 아니다.Hereinafter, the present invention will be described in more detail with reference to examples. These examples are for further illustrating the present invention, and the scope of the present invention is not limited to these examples.
실시예 1. 재료 및 방법Example 1. Materials and methods
1.1. 1.1. 자화전호로부터From Jihwa 6- 6- 포르밀Formyl 엄벨리페론의Umberly Peron's 분리 detach
분말의 자화전호 전초 (2.7 kg)를 메탄올로 3시간씩 3회 환류 냉각하에서 추출하고 감압 진공하에서 40℃ 이하에서 농축하여 메탄올 추출물 (864.32 g)을 얻었다. 메탄올 추출물을 증류수에 현탁시킨 후, 디클로로메탄(CH2Cl2), 에틸아세테이트(EtOAc)과 n-부탄올(n-BuOH)로 순차적으로 분획하여 CH2Cl2(212.47 g), EtOAc(19.06 g)과 n-BuOH(151.07 g) 분획물 및 최종 물 분획물 (434.32 g)을 얻었다. EtOAc 분획물 (19 g)을 CH2Cl2-MeOH (10:1)을 용매로 하여 실리카겔 컬럼 크로마토그래피를 행하여 F-1에서 F-20까지 20개의 subfraction을 얻은 후 F-6 (500 mg)을 다시 CH2Cl2-MeOH (15:1)을 용매로 하여 다시 실리카겔 컬럼 크로마토그래피를 행하여 미백색 분말 6-포르밀 엄벨리페론 (30 mg)을 최종 분리하였다. 화합물의 구조는 수소 및 탄소 핵자기 공명스펙트럼을 분석하고 문헌 (Caffieri 등, 2007)과 비교하여 결정하였다. (2.7 kg) of the powder was extracted with methanol for 3 hours under reflux and cooling for 3 hours, and then concentrated under reduced pressure at 40 캜 or lower to obtain a methanol extract (864.32 g). The methanol extract was suspended in distilled water and then sequentially partitioned between dichloromethane (CH2Cl2), ethyl acetate (EtOAc) and n-BuOH (212.47 g), EtOAc (19.06 g) and n-BuOH 151.07 g) and a final fraction (434.32 g). The EtOAc fraction (19 g) was subjected to silica gel column chromatography using CH 2 Cl 2 -MeOH (10: 1) as a solvent to obtain 20 subfractions from F-1 to F-20, followed by F-6 (500 mg) The residue was subjected to silica gel column chromatography again using CH 2 Cl 2 -MeOH (15: 1) as a solvent to finally isolate an off-white powder 6-formyl uberifferone (30 mg). The structure of the compounds was determined by comparing the hydrogen and carbon nuclear magnetic resonance spectra with the literature (Caffieri et al., 2007).
6-포르밀 엄벨리페론 (6-formyl umbelliferone)의 성상-미백색 분말; 1H NMR (400 MHz, DMSO-d 6 ): H 11.7 (1H, brs, -OH), 10.24 (1H, s, -CHO), 8.03 (1H, s, H-5), 8.04 (1H, d, J = 9.6 Hz, H-4), 6.84 (1H, s, H-8), 6.32 (1H, d, J = 9.6 Hz, H-3); 13C NMR (100 MHz, DMSO-d 6 ): δC 189.2 (-CHO), 163.4 (C-7), 159.5 (C-2), 158.7 (C-9), 144.4 (C-4), 130.0 (C-5), 120.4 (C-6), 113.1 (C-3), 111.96 (C-10), 103.4 (C-8)Appearance of 6-formyl umbelliferone - light-white powder; 1 H NMR (400 MHz, DMSO- d 6): H 11.7 (1H, brs, -OH), 10.24 (1H, s, -CHO), 8.03 (1H, s, H-5), 8.04 (1H, d , J = 9.6 Hz, H-4), 6.84 (1H, s, H-8), 6.32 (1H, d, J = 9.6 Hz, H-3); 13 C NMR (100 MHz, DMSO- d 6): δ C 189.2 (-CHO), 163.4 (C-7), 159.5 (C-2), 158.7 (C-9), 144.4 (C-4), 130.0 (C-5), 120.4 (C-6), 113.1 (C-3), 111.96
1.2. 8-1.2. 8- 포르밀Formyl 엄벨리페론의Umberly Peron's 합성 synthesis
빙냉하에서 엄벨리페론을 트리플루오로 초산 용액 (2.0 g, 9.8 m mole)에 녹이고 우로트로핀(urotropine, 2.06 g, 14.69 m mole)을 천천히 첨가한 후 환류 냉각상태에서 12 시간 동안 가열한다. 반응 후 용매를 증발시킨 후 증류수 30 mL를 첨가하여 빙냉 조건에서 방치하면 미황색 침전물이 생성된다. 여과, 건조하여 헥산:에틸 아세테이트 (10:1) 용매로 실리카겔 칼럼 크로마토그래피하여 미황색 8-포르밀 엄벨리페론 (0.30 g, 수율 15%). 8-포르밀 엄벨리페론 (8-formyl umbelliferone)의 성상-미황색 분말; 1H NMR (400 MHz, CDCl3): δH 12.22 (1H, brs, -OH), 10.61 (1H, s, -CHO), 7.66 (1H, d, J = 9.6 Hz, H-4), 7.60 (1H, d, J = 8.8 Hz, H-5), 6.89 (1H, d, J = 8.8 Hz, H-8), 6.33 (1H, d, J = 9.6 Hz, H-3); 13C NMR (100 MHz, CDCl3): δC 192.94 (-CHO), 165.51 (C-7), 159.12 (C-2), 156.74 (C-9), 143.36 (C-4), 135.98 (C-5), 114.7 (C-6), 113.41 (C-8), 110.85 (C-3), 108.68 (C-6)Under ice cooling, umbelliferone was dissolved in trifluoroacetic acid solution (2.0 g, 9.8 m mole), and urotropine (2.06 g, 14.69 m mole) was added slowly and heated under reflux for 12 hours. After the reaction, evaporate the solvent, add 30 mL of distilled water, and leave it under ice-cooling condition to produce a yellow precipitate. Filtered, dried and chromatographed on silica gel with hexane: ethyl acetate (10: 1) to give pale yellow 8-formyl eubelipernone (0.30 g, yield 15%). Forms of 8-formyl umbelliferone - Pale yellow powder; 1 H NMR (400 MHz, CDCl 3): δ H 12.22 (1H, brs, -OH), 10.61 (1H, s, -CHO), 7.66 (1H, d, J = 9.6 Hz, H-4), 7.60 (1H, d, J = 8.8 Hz, H-5), 6.89 (1H, d, J = 8.8 Hz, H-8), 6.33 (1H, d, J = 9.6 Hz, H-3); 13 C NMR (100 MHz, CDCl 3 ):? C 192.94 (-CHO), 165.51 (C-7), 159.12 (C-2), 156.74 (C-6), 113.41 (C-8), 110.85 (C-3), 108.68
1.3. 1.3. 콜린에스테라제Choline esterase (cholinesterase) 억제활성 (cholinesterase) inhibitory activity
콜린에스테라제 억제 활성은 아세틸티오콜린 (ACh)과 부티릴티오콜린 (BCh)을 기질로 이용하는 AChE(acetylcholinesterase)와 BChE(butyrylcholinesterase)의 억제활성을 측정한다. 100 mM Sodium phosphate buffer (pH 8.0) 140 μl, 시료 20 μl와 AChE (0.36 U) 혹은 BChE (0.36 U) 20 μl를 각각 96 well microplate에 넣고 실온에서 15분간 배양한 후에 10 μl의 DTNB [5,5'-dithiobis(2-nitrobenzoic acid)]와 기질인 ACh 혹은 BCh 10 μl를 넣어 최종적으로 반응액이 200 μl이 되도록 96 well plate에 넣는다. 이때, DTNB와 기질인 ACh 혹은 BCh을 넣어야 효소반응이 시작되고, ACh 혹은 BCh이 효소적 가수분해에 의해 생성되는 thiocholine과 DTNB가 반응하여 생성되는 노란색의 5-thio-2-nitrobenzoate anion을 microplate reader VERSA max (Molecular Devices, CA, USA)로 412 nm에서 15분 후 측정한다. 각각의 측정시료의 cholinesterase 억제활성을 IC50 값으로 나타내며 이는 기질인 ACh과 BCh의 가수분해를 50 % 억제하는 농도를 μg/ml 혹은 μM로 나타낸 값으로 나타낸다. 양성대조군으로 베르베린(berberine)을 사용하였다. 콜린에스테라제 억제 %는 하기 방정식으로 구하였다. The cholinesterase inhibitory activity measures the inhibitory activity of AChE (acetylcholinesterase) and BChE (butyrylcholinesterase) using acetylthiocolchicine (ACh) and butyrylthiocholine (BCh) as substrates. 20 μl of 100 mM sodium phosphate buffer (pH 8.0), 20 μl of sample, and 20 μl of AChE (0.36 U) or BChE (0.36 U) were added to 96-well microplates and incubated at room temperature for 15 minutes. 10 μl of DTNB [ 5'-dithiobis (2-nitrobenzoic acid)] and 10 μl of the substrate ACh or BCh, and finally add 200 μl of the reaction solution into a 96-well plate. In this case, the enzyme reaction starts when DTNB and substrate ACh or BCh are added. The yellow 5-thio-2-nitrobenzoate anion, which is formed by the reaction of thiocholine and DTNB produced by enzymatic hydrolysis of ACh or BCh, VERSA max (Molecular Devices, CA, USA) at 412 nm for 15 minutes. The cholinesterase inhibitory activity of each test sample is represented by the IC 50 value, which represents the concentration by which the hydrolysis of the substrates ACh and BCh is inhibited by 50% in μg / ml or μM. Berberine was used as a positive control. The cholinesterase inhibition% was determined by the following equation.
Inhibition (%) = [1-(Asam/Acon)/Astd] × 100Inhibition (%) = [1- (A sam / A con ) / A std ] x 100
Asam: 측정시료를 넣었을 때의 흡광도A sam : Absorbance of the sample
Acon: 측정시료를 넣고 효소를 넣지 않았을 때의 흡광도A con : absorbance when the sample is added and the enzyme is not added
Astd: 측정시료를 넣지 않았을 때의 흡광도A std : Absorbance without sample
1.4. 1.4. BACE1BACE1 (β- (β- secretasesecretase ) 활성 저해 실험 ) Active inhibition experiment
알츠하이머성 치매질환과 관련된 효소인 베타-세크레타아제 (β-secretase)에 대한 저해활성은 키트 시약 방법 (BACE1 FRET assay kit, PanVera Co.)에 따라 수행하였다. 10 % DMSO에 용해시킨 시료, assay buffer (50 mM sodium acetate, pH 4.5), BACE1 효소 (1.0 U/mL), 제공 기질 (750 nM Rh-EVNLDAEFK-Quencher in 50 mM, ammonium bicarbonate)을 반응하여 25 ℃에서 60분간 암실에서 반응시킨다. 2종의 fluorophores (Rh- EVNLDAEFK-Quencher)가 BACE1에 의해 분해되면 fluorescent donor (Rh-EVNL)가 생성되고 이 반응생성물은 흡광광도 545 nm (excitation)와 585 nm (emission)에서 microplate spectrofluorometer (Gemini EM, Molecular Devices, and Sunnyvale, CA, USA)로 측정하였다. BACE1 억제 %는 하기 방정식으로 구하였다. 각 시료의 BACE1 효소 억제는 IC50 값 (μM)으로 표시하였다. The inhibitory activity against beta-secretase, an enzyme involved in Alzheimer's disease, was performed according to the kit reagent method (BACE1 FRET assay kit, PanVera Co.). (50 mM sodium acetate, pH 4.5), BACE1 enzyme (1.0 U / mL), and substrate (750 nM Rh-EVNLDAEFK-Quencher in 50 mM ammonium bicarbonate) were dissolved in 10% RTI ID = 0.0 > 60 C < / RTI > When the two kinds of fluorophores (Rh-EVNLDAEFK-Quencher) were degraded by BACE1, a fluorescent donor (Rh-EVNL) was formed and the reaction product was detected by a microplate spectrofluorometer (Gemini EM) at 545 nm excitation and 585 nm , Molecular Devices, and Sunnyvale, CA, USA). BACE1 inhibition% was calculated by the following equation. BACE1 enzyme inhibition of each sample was expressed as IC 50 value (μM).
Inhibition (%) = [1 - (S60 - S0)/(C60 - C0)] ×100Inhibition (%) = [1 - (S 60 - S 0) / (C 60 - C 0)] × 100
C60: 60분 반응 후 대조군의 형광광도 (효소, buffer, 기질) C 60 : Fluorescence intensity (enzyme, buffer, substrate) of the control group after 60 minutes of reaction,
C0: 혼합 직후 (0분) 대조군의 형광광도 (효소, buffer, 기질)C 0 : Immediately after mixing (0 min) Fluorescence intensity (enzyme, buffer, substrate)
S60: 60분 반응 후 실험군의 형광광도 (시료, 효소, buffer, 기질) S 60 : Fluorescence intensity (sample, enzyme, buffer, substrate)
S0: 혼합 직후 (0분) 실험군의 형광광도 (시료, 효소, buffer, 기질) S 0 : Immediately after mixing (0 min) Fluorescence intensity (sample, enzyme, buffer, substrate)
1.5. 베타 1.5. beta 세크레타아제Secretase ( ( BACE1BACE1 ) kinetic 연구) kinetic studies
BACE1의 저해활성에 대한 상관관계를 결정하기 위하여 여러가지 화합물 농도와 기질인 Rh-EVNLDAEFK-Quencher를 750 nM, 375 nM, 250 nM의 농도로 준비하였다. 여러 가지 농도의 화합물 (6-포르밀 엄벨리페론: 10 μM, 2 μM, 0.4 μM; 8-포르밀 엄벨리페론 : 100 μM, 50 μM, 25 μM)과 기질을 BACE1 활성 저해 실험과 동일한 방법으로 545 nm (excitation)와 585 nm (emission)에서 microplate spectrofluorometer (Gemini EM, Molecular Devices, and Sunnyvale, CA, USA)으로 측정하였다. 저해 유형은 딕선 플롯(Dixon plot)과 라인위버-버크 플롯(Lineweaver-Burk plot)으로 결정하였으며, 저해제의 저해 상수 (inhibition constant, Ki)는 딕선 플롯(Dixon plot)으로 구하였다.To determine the inhibitory activity of BACE1, various concentrations of compound and substrate Rh-EVNLDAEFK-Quencher were prepared at concentrations of 750 nM, 375 nM and 250 nM. (10 μM, 2 μM, 0.4 μM; 8-formyl ambeleferone: 100 μM, 50 μM, 25 μM) and the substrate were incubated with various concentrations of compounds (Gemini EM, Molecular Devices, Sunnyvale, Calif., USA) at 545 nm excitation and 585 nm emission. The inhibition pattern was determined by Dixon plot and Lineweaver-Burk plot. The inhibition constant ( Ki ) of the inhibitor was determined by Dixon plot.
1.6. 1.6. BACE1의Of BACE1 분자적 도킹 시뮬레이션 연구 Molecular docking simulation study
도킹 연구는 BACE1에 대한 시료의 최적의 결합위치를 알아보기 위하여 수행되었다. Human BACE1 저해제인 QUD(2-amino-{(1R)-1-cyclohexyl-2-[(cyclohexylcarbonyl)amino]ethyl}-6-phenoxyquinazolin-3-ium) (PDB ID: 2WJO)의 각각 2.5 Å의 해상도를 가진 결정 구조는 RCSB Protein Data Bank에서 제공받았다. 도킹 시뮬레이션을 위해서 QUD는 제거하고 단백질은 리간드가 없는 상태로 여겼으며, 물 분자는 Accelrys Discovery Studio 16.1 (DS, http://www.accelrys.com; Accelrys, Inc. San Diego, CA, USA)을 이용하여 제거하였다. Autodock 4.2.6 automated docking tool을 이용하여 단백질에 극성의 수소 원자를 붙였으며, QUD가 단백질에 결합하는 부위들을 가장 적합한 리간드 결합 부위로 하였다. 엄벨리페론, 6-포르밀 엄벨리페론 그리고 8-포르밀 엄벨리페론의 3차원적 구조는 Chemdraw Ultra 12.0 (CambridgeSoft, Cambridge, MA, USA)을 이용하여 그렸으며 pdb 포맷형식으로 저장하였다. 자동화된 도킹 시뮬레이션은 Autodock tools (ADT)를 이용하여 수행되었다. Grid map은 단백질 결합부위를 완전히 포함할 수 있도록 grid box size는 126 × 126 × 126 point로 하고, default spacing은 0.375 Å로 설정하여 생성되었다. BACE1 잔기들의 결합 양상과 이에 상응하는 결합 에너지들 중 가장 낮은 에너지 값을 가진 모델을 가장 좋은 분자적 상호작용으로 간주하였다. 알려진 알로스테릭 저해제인 TMF(5,7,4'-trimethoxyflavone)가 결합 잔기와 양상을 비교하기 위해서 이용되었다. 결과는 UCSF Chimera와 LigPlot (v.1.4.5)을 이용하여 분석되었고, 모든 도킹 시뮬레이션은 Intel® Core ™ i5-6300HQ CPU @ 2.30 GHz (Windows 10 and 64-bit operating system)을 이용하여 수행되었다.Docking studies were performed to determine the optimal binding site of the sample to BACE1. Human BACE1 inhibitor QUD (2-amino - {( 1 R) -1-cyclohexyl-2 - [(cyclohexylcarbonyl) amino] ethyl} -6-phenoxyquinazolin-3-ium): 2.5 Å of each of the (PDB ID 2WJO) Resolution structures with resolution were provided by the RCSB Protein Data Bank. For docking simulation, the QUD was removed and the protein was considered to be free of ligands. The water molecules were analyzed using Accelrys Discovery Studio 16.1 (DS, http://www.accelrys.com, Accelrys, Inc. San Diego, CA, USA) Lt; / RTI > The autodock 4.2.6 automated docking tool was used to attach polar hydrogen atoms to the protein, and the sites where QUD binds to the protein were the most suitable ligand binding sites. The three-dimensional structure of umbelliferone, 6-formylumbeliferone and 8-formylumbeliferone was drawn using Chemdraw Ultra 12.0 (CambridgeSoft, Cambridge, Mass., USA) and stored in the pdb format. Automated docking simulation was performed using the Autodock tools (ADT). Grid map was created by setting the grid box size to 126 × 126 × 126 points and setting the default spacing to 0.375 Å so as to completely contain the protein binding site. A model with the lowest energy value among the binding patterns of BACE1 residues and corresponding binding energies was regarded as the best molecular interaction. A known allosteric inhibitor, TMF (5,7,4'-trimethoxyflavone), was used to compare the binding residues and aspects. The results were analyzed using UCSF Chimera and LigPlot (v.1.4.5), and all docking simulations were performed using the Intel® Core ™ i5-6300HQ CPU @ 2.30 GHz (
실시예Example 2. 2. 엄벨리페론Umberly Peron , 6-, 6- 포르밀Formyl 엄벨리페론Umberly Peron 및 8- And 8- 포르밀Formyl 엄벨리페론의Umberly Peron's BACE1 및 콜린에스테라제 효소에 대한 억제활성 효과 Effect of inhibitory activity on BACE1 and cholinesterase enzymes
본 발명자들은 엄벨리페론, 6-포르밀 엄벨리페론 및 8-포르밀 엄벨리페론의 BACE1 및 콜린 에스테라제 효소에 대한 억제활성을 살펴보기 위한 실험을 진행하였다. 베르베린을 대조화합물로 하여, 시험관 조건하에서 엄벨리페론, 6-포르밀 엄벨리페론 및 8-포르밀 엄벨리페론에 대하여 항-콜린에스테라제 활성을 확인하였다. The present inventors conducted an experiment to examine the inhibitory activity of umbelliferone, 6-formyl umbeliferone and 8-formyl uberiferone against BACE1 and cholinesterase enzymes. With berberine as a control compound, anti-cholinesterase activity was confirmed against uberferon, 6-formyl eubaryferon and 8-formyl eubelipron under in vitro conditions.
그 결과, 뱀장어로부터 얻은 아세틸콜린에스테라제에 대한 억제활성(표 1)에서 엄벨리페론은 50% 억제 농도(IC50)가 105.48 ± 0.57 μM로 약한 억제활성을 나타내었지만, 6-포르밀 엄벨리페론과 8-포르밀 엄벨리페론은 16.70 ± 1.62 및 19.13 ± 0.57 μM로서 높은 억제활성을 나타내었다. 대조화합물인 베르베린은 0.74 ± 0.007 μM이었다. 이들 화합물들은 모두 아세틸콜린에스테라제에 대하여 농도 의존적으로 억제활성을 나타내었다 (도 1). As a result, in the inhibitory activity against acetylcholinesterase obtained from eels (Table 1), umbeliferone showed a weak inhibitory activity with a 50% inhibitory concentration (IC 50 ) of 105.48 ± 0.57 μM, Valericone and 8-formyl uberiferone showed high inhibitory activity as 16.70 ± 1.62 and 19.13 ± 0.57 μM. The control compound berberine was 0.74 ± 0.007 μM. All of these compounds showed a dose-dependent inhibitory activity against acetylcholinesterase (Fig. 1).
또한, 부티릴콜린에스테라제에 대한 억제활성(표 1)을 확인하였으며, 엄벨리페론과 8-포르밀 엄벨리페론은 50% 억제 농도(IC50)가 각각 90.14 ± 0.02과 87.67 ± 0.48 μM로서 약한 억제활성을 나타내었지만 6-포르밀 엄벨리페론은 27.90 ± 3.43 μM로서 다소 높은 억제활성을 나타내었다 (도 2). 대조화합물인 베르베린은 9.81 ± 0.35 μM이었다. In addition, the inhibitory activity against butyrylcholinesterase (Table 1) was confirmed, and the 50% inhibitory concentration (IC 50 ) of umbelliferone and 8-formyl uberifenone was 90.14 ± 0.02 and 87.67 ± 0.48 μM (Fig. 2). However, 6-formylmaveliferone showed a somewhat higher inhibitory activity (27.90 ± 3.43 μM) (FIG. 2). The control compound berberine was 9.81 ± 0.35 μM.
베타-세크레타제 (BACE1)에 대한 억제활성(표 1)의 경우, 엄벨리페론은 아주 약한 억제효과를 나타내었으며 반면, 6-포르밀과 8-포르밀로 치환된 경우에는 각각 50% 억제 농도(IC50)가 1.31 ± 0.01과 39.82 ± 0.31 μM로서 높게 나타났다 (도 3). 특히, 6-포르밀 엄벨리페론은 대조군인 퀘르세틴보다 훨씬 높은 활성을 나타내었다. 6-포르밀 엄벨리페론의 BACE1 효소에 대한 저해양식은 딕선(Dixon plot)과 라인위버-버크 플롯(Lineweaver-Burk plot)으로부터 비경쟁적 저해 상수 (Ki)값은 2.27인 것으로 확인되었다(표 1, 도 4 및 도 5). Inhibitory activity against beta- secrecase (BACE1) (Table 1) showed a very weak inhibitory effect, whereas when substituted with 6-formyl and 8-formyl, IC 50 ) was as high as 1.31 ± 0.01 and 39.82 ± 0.31 μM (FIG. 3). In particular, 6-formylmaveliferone showed much higher activity than quercetin, the control group. The inhibition pattern for 6-formylmaveliferone against BACE1 enzyme was confirmed to be 2.27 from the Dixon plot and the Lineweaver-Burk plot for the non-competitive inhibition constant ( Ki ) , Figs. 4 and 5).
[표 1][Table 1]
aIC50 값(μM)은 로그 곡선으로 계산되었고, 세 번 반복실험으로부터 평균±S.E.M으로 표현하였음. a IC 50 value (μM) was calculated as a logarithmic curve and expressed as mean ± SEM from triplicate experiments.
b딕슨 플롯(Dixon plot)으로 결정됨. b determined by the Dixon plot.
c딕슨 플롯(Dixon plot) 및 라인위버-버크 플롯(Lineweaver-Burk plot)으로 결정됨. c determined by the Dixon plot and the Lineweaver-Burk plot.
d,e양성 대조군 d, e positive control group
(-) no test( - ) no test
실시예Example 3. 3. BACE1BACE1 저해 활성에 대한 분자적 도킹 연구 Molecular docking studies on inhibitory activity
본 발명자들은 화합물과 기존에 알려진 저해제들 (QUD와 TMF)에 대한 분자적 도킹을 연구하였다. Protein data bank (PDB)에 따르면 QUD는 가장 강력한 비펩타이드성 경쟁적 BACE1 저해제이고, TMF는 비경쟁적 저해제이다. The present inventors have studied molecular docking of compounds and known inhibitors (QUD and TMF). According to the protein data bank (PDB), QUD is the most potent non-peptide competitive BACE1 inhibitor and TMF is a noncompetitive inhibitor.
표 3 및 도 7A에서와 같이, 활성 자리에서의 가장 높은 결합 에너지 (-5.4 kcal/mol)를 가진 결합 위치는 엄벨리페론의 수산기가 효소의 촉매 잔기인 Asp32와 수소결합을 하는 것으로 나타났다. 또한, 엄벨리페론과 효소의 Lys75, Trp76, Val69, Phe108 및 Ile118 잔기 간에는 소수성 결합(Van der Waals interacting)이 관찰되었다. As shown in Table 3 and FIG. 7A, the binding site with the highest binding energy (-5.4 kcal / mol) in the active site was found to be hydrogen bonding to the Asp32, the catalytic residue of the enzyme, in the hydroxyl group of uberperone. In addition, a van der Waals interaction was observed between the umbelliferone and the Lys75, Trp76, Val69, Phe108 and Ile 118 residues of the enzyme.
엄벨리페론과는 반대로, 6-, 8-포르밀 엄벨리페론은 BACE1의 촉매 자리에 도킹되지 않았으며 이것은 in vitro 효소반응속도 연구와 일치되는 결과이다. 도 9B에서와 같이, BACE1의 Gly13 잔기는 6-포르밀 엄벨리페론의 수산기와 포르밀기와 각각 수소결합을 형성하였으며 -7.2 kcal/mol의 결합 에너지를 가졌다. 더욱이, 6-포르밀 엄벨리페론과 BACE1의 Ser10, Gly11, Tyr14, Val170, Thr232, Arg307, Pro308, Ala335 및 Glu339 잔기 간의 소수성 결합 또한 알로스테릭 위치에 결합하는데 중요한 역할을 하는 것으로 나타났다. 8-포르밀 엄벨리페론의 분자적 도킹 모델은 도 9C에 나타내었다. 8-포르밀 엄벨리페론-BACE1 복합체에서, 효소의 Ser10, Gly11, Gly13, Tyr14, Val170, Thr232, Arg307, Ala335, Val336 및 Glu339 잔기가 8-포르밀 엄벨리페론과 소수성 상호작용을 하는 것이 나타났으며 수소 결합은 관찰되지 않았다. QUD는 Gly230과 촉매 잔기인 Asp228과 Asp32와 4개의 수소 결합을 형성함으로써 BACE1과 상호작용 하였다. 효소의 Lys107, Lys75, Gly74, Leu30, Thr231, Val69, Tyr198, Ile226, Thr329, Gly34, Arg235, Ser35, Tyr71 및 Ile118 잔기 역시 BACE1과 QUD 간의 소수성 상호작용에 연관되어 있음이 나타났다. 보고된 알로스테릭 저해제인 TMF와 BACE1 복합체에서, 효소의 Gly11 잔기가 TMF의 산소 원자와 하나의 수소 결합을 형성하였다(도 9E). 게다가, TMF와 효소의 Ser10, Tyr14, Thr232, Trp277, Glu303, Gln304, Leu306, Arg307, Pro308, Tyr320, Ala335, Val336 및 Glu339 잔기 간에 소수성 상호작용이 예측되었다. 도 6에서와 같이, 본 발명자들의 도킹 결과는 6-, 8-포르밀 엄벨리페론의 BACE1에 대한 결합 위치가 TMF의 결합 위치와 유사함을 보여준 것이다. In contrast to umbeliferone, 6- and 8-formylambeliferone were not docked to the catalytic site of BACE1, which is consistent with an in vitro enzyme kinetics study. As shown in Fig. 9B, the Gly13 residue of BACE1 formed a hydrogen bond with the hydroxyl group and the formyl group of 6-formylambelliferone, respectively, and had a binding energy of -7.2 kcal / mol. Furthermore, it has been shown that hydrophobic binding between 6-formylmaveline and Ser10, Gly11, Tyr14, Val170, Thr232, Arg307, Pro308, Ala335 and Glu339 residues of BACE1 also plays an important role in binding to allosteric sites. A molecular docking model of 8-formyl ebbeliperone is shown in Figure 9C. In the 8-formylembeliferone-BACE1 complex, Ser10, Gly11, Gly13, Tyr14, Val170, Thr232, Arg307, Ala335, Val336 and Glu339 residues of the enzyme show hydrophobic interactions with 8- formylmaveliferone And hydrogen bonding was not observed. QUD interacted with BACE1 by forming four hydrogen bonds with Gly230 and Asp228, the catalytic residues, and Asp32. The enzymes Lys107, Lys75, Gly74, Leu30, Thr231, Val69, Tyr198, Ile226, Thr329, Gly34, Arg235, Ser35, Tyr71 and Ile118 residues were also found to be involved in the hydrophobic interaction between BACE1 and QUD. In the reported allosteric inhibitors TMF and BACE1 complex, the Gly11 residue of the enzyme formed a single hydrogen bond with the oxygen atom of TMF (Fig. 9E). In addition, hydrophobic interactions between TMF and Ser10, Tyr14, Thr232, Trp277, Glu303, Gln304, Leu306, Arg307, Pro308, Tyr320, Ala335, Val336 and Glu339 residues of the enzyme were predicted. As shown in FIG. 6, the docking results of the present inventors show that the bonding position of 6-, 8- formylmaveliferone to BACE1 is similar to that of TMF.
[표 2][Table 2]
a 결합에너지(Binding energy) - AChE 효소의 활성 부위에 대한 결합 친화성 및 결착력을 가리킴. a Binding energy - refers to the binding affinity and binding affinity for the active site of the AChE enzyme.
b,c,d 효소-억제제 복합체로부터의 수소결합 및 모든 아미노산 잔기는 Autodockvina 프로그램으로 결정됨. b, c, d The hydrogen bond from the enzyme-inhibitor complex and all amino acid residues are determined by the Autodockvina program.
[표 3][Table 3]
a 결합에너지(Binding energy) - AChE 효소의 활성 부위에 대한 결합 친화성 및 결착력을 가리킴. a Binding energy - refers to the binding affinity and binding affinity for the active site of the AChE enzyme.
b,c,d 효소-억제제 복합체로부터의 수소결합 및 모든 아미노산 잔기는 Autodockvina 프로그램으로 결정됨. b, c, d The hydrogen bond from the enzyme-inhibitor complex and all amino acid residues are determined by the Autodockvina program.
Claims (6)
[화학식 1]
.A pharmaceutical composition for preventing or treating degenerative neurological diseases comprising 6-formyl umbelliferone having the structure of the following formula (1) as an active ingredient:
[Chemical Formula 1]
.
상기 6-포르밀 엄벨리페론은 BACE1(beta-secretase 1) 및 콜린에스테라제의 활성을 억제하여 베타-아밀로이드 플라크의 생성을 억제하는 것을 특징으로 하는 조성물.The method according to claim 1,
Wherein said 6-formylambeliperon inhibits the activity of BACE1 (beta-secretase 1) and cholinesterase to inhibit the production of beta-amyloid plaques.
상기 퇴행성 신경질환은 치매, 알츠하이머병, 헌팅턴병 및 파킨슨병으로 이루어진 군으로부터 선택되는 어느 하나인 것을 특징으로 하는 조성물.The method according to claim 1,
Wherein the degenerative neurological disease is any one selected from the group consisting of dementia, Alzheimer's disease, Huntington's disease, and Parkinson's disease.
[화학식 1]
.A health functional food for preventing or ameliorating a degenerative neurological disease comprising 6-formyl umbelliferone having the structure of the following formula (1) as an active ingredient:
[Chemical Formula 1]
.
상기 6-포르밀 엄벨리페론은 BACE1(beta-secretase 1) 및 콜린에스테라제의 활성을 억제하여 베타-아밀로이드 플라크의 생성을 억제하는 것을 특징으로 하는 건강기능식품.5. The method of claim 4,
Wherein the 6-formyl mambelliferone inhibits the activity of BACE1 (beta-secretase 1) and choline esterase to inhibit the production of beta-amyloid plaques.
상기 퇴행성 신경질환은 치매, 알츠하이머병, 헌팅턴병 및 파킨슨병으로 이루어진 군으로부터 선택되는 어느 하나인 것을 특징으로 하는 건강기능식품.
5. The method of claim 4,
Wherein said degenerative neurological disease is any one selected from the group consisting of dementia, Alzheimer's disease, Huntington's disease, and Parkinson's disease.
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WO2005071096A2 (en) | 2004-01-21 | 2005-08-04 | Molecular Probes, Inc. | Derivatives of cephalosporin and clavulanic acid for detecting beta-lacamase in a sample |
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WO2005071096A2 (en) | 2004-01-21 | 2005-08-04 | Molecular Probes, Inc. | Derivatives of cephalosporin and clavulanic acid for detecting beta-lacamase in a sample |
Non-Patent Citations (4)
Title |
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Journal of the Chemical Society (1936), pp. 1828-31 |
Planta Medica (20050131), 71(1), pp. 84-87 |
RSC Advances (2014), 4(106), pp. 61277-61280 |
약학회지 제 55 권 제 6 호 473~477 (2011) |
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