WO2018130170A1 - 一种肿瘤坏死因子alpha的高亲和性肽及其应用 - Google Patents
一种肿瘤坏死因子alpha的高亲和性肽及其应用 Download PDFInfo
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- WO2018130170A1 WO2018130170A1 PCT/CN2018/072194 CN2018072194W WO2018130170A1 WO 2018130170 A1 WO2018130170 A1 WO 2018130170A1 CN 2018072194 W CN2018072194 W CN 2018072194W WO 2018130170 A1 WO2018130170 A1 WO 2018130170A1
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- C—CHEMISTRY; METALLURGY
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- C07K—PEPTIDES
- C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
- C07K14/435—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
- C07K14/46—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates
- C07K14/47—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates from mammals
- C07K14/4701—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates from mammals not used
- C07K14/4702—Regulators; Modulating activity
- C07K14/4703—Inhibitors; Suppressors
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- C—CHEMISTRY; METALLURGY
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- C07K—PEPTIDES
- C07K7/00—Peptides having 5 to 20 amino acids in a fully defined sequence; Derivatives thereof
- C07K7/04—Linear peptides containing only normal peptide links
- C07K7/06—Linear peptides containing only normal peptide links having 5 to 11 amino acids
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
- C07K14/001—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof by chemical synthesis
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
- C07K14/435—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
- C07K14/705—Receptors; Cell surface antigens; Cell surface determinants
- C07K14/715—Receptors; Cell surface antigens; Cell surface determinants for cytokines; for lymphokines; for interferons
- C07K14/7151—Receptors; Cell surface antigens; Cell surface determinants for cytokines; for lymphokines; for interferons for tumor necrosis factor [TNF], for lymphotoxin [LT]
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K7/00—Peptides having 5 to 20 amino acids in a fully defined sequence; Derivatives thereof
- C07K7/04—Linear peptides containing only normal peptide links
- C07K7/08—Linear peptides containing only normal peptide links having 12 to 20 amino acids
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/53—Immunoassay; Biospecific binding assay; Materials therefor
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- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/68—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving proteins, peptides or amino acids
- G01N33/6863—Cytokines, i.e. immune system proteins modifying a biological response such as cell growth proliferation or differentiation, e.g. TNF, CNF, GM-CSF, lymphotoxin, MIF or their receptors
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- G01N2333/52—Assays involving cytokines
- G01N2333/525—Tumor necrosis factor [TNF]
Definitions
- the invention belongs to the field of biotechnology, and particularly relates to a high affinity peptide (TNF ⁇ antagonist peptide) of tumor necrosis factor alpha (TNF ⁇ ) and application thereof.
- TNF ⁇ antagonist peptide tumor necrosis factor alpha
- Tumor necrosis factor was originally induced by endotoxin injection in 1975 and was identified as a serum active factor that induces apoptosis in tumors transplanted into mice, and was therefore named as tumor necrosis factor.
- TNF ⁇ was found to be a very important inflammatory factor.
- immune-induced inflammatory diseases the expression of TNF ⁇ in tissues increases, and induces a series of pathogenic reactions and expression of related inflammatory factors, ultimately leading to tissue damage, such as bone destruction, cartilage degradation, fibroblast proliferation. , keratinocyte proliferation, etc., make TNF ⁇ an important target for the treatment of a variety of inflammatory diseases.
- the existing antagonists of TNF ⁇ mainly concentrate on monoclonal antibodies and monoclonal antibody-derived molecules, but the monoclonal antibody drugs are highly immunogenic, and can induce the production of anti-drug antibodies in the body, that is, the production of anti-antibodies, Questions may affect the efficacy of the drug, and on the other hand may induce antibody-dependent cell-mediated cytotoxicity and antibody-mediated complement-dependent cytotoxicity, which may cause damage and side effects to the body, due to anti-antibody production. The efficacy is reduced.
- Different molecular structures determine the immunogenicity of the molecule.
- the peptide is less immunogenic than the antibody, and the small molecular size makes the peptide substance more permeable. Therefore, the peptide is a more advantageous TNF ⁇ antagonist.
- sequence-specific peptide was obtained by artificial synthesis, and the affinity of the antagonist peptide to TNF ⁇ was detected by ELISA. Then, the inflammatory animal was injected with the antagonist peptide, and it was convenient to observe whether the peptide has an inhibitory effect on inflammation. .
- the TNF ⁇ high-affinity peptide provided by the present invention has the amino acid sequence as shown in SEQ.ID.NO.1, and is recorded as 632 peptide or TNF ⁇ antagonist peptide, and has the following functional characteristics: 1 can be highly affinity with TNF ⁇ , and the solution is determined.
- the constant Kd reaches 138 nM (Kd value indicates the concentration of the ligand when half of the receptor is bound by the ligand, and the smaller the Kd value, the higher the affinity of the receptor to the ligand); 2 is effective after injection into an animal model of inflammation. It inhibits the onset of inflammation and acts as a resistance to inflammatory damage.
- the present invention also provides a gene encoding the affinity peptide of the TNF ⁇ high affinity peptide (consisting of respective degenerate codons of the corresponding amino acids), the nucleotide sequence of which is shown in SEQ.ID.NO.2.
- the present invention also obtains a peptide sequence having the same function as the TNF ⁇ high affinity peptide, and the amino acid sequence thereof is shown in SEQ.ID.NO.3 and is referred to as 636 peptide.
- the present invention also provides a peptide sequence of SEQ.ID.NO.1 and an amino acid sequence of SEQ.ID.NO.3 which simultaneously contain the amino acid sequence of the TNF ⁇ high affinity peptide, which is a single or multiple repeated tandem or The branched peptide molecular sequence, and the molecule containing these core sequence features (homology above 70%), the peptide amino acid sequence is shown in SEQ.ID.NO.4.
- the present invention also provides a peptide modified by biological and chemical groups, which comprises the TNF ⁇ high affinity peptides SEQ.ID.NO.1 and SEQ.ID.NO.3 as the C-terminus (or N-terminus of the core sequence, Structurally characteristic molecules to which a group or a side chain) is added with an antigen or a drug or a PEG modification or other molecular group covalently modified.
- the present invention also provides a modified peptide comprising the above various TNF ⁇ high affinity peptides, wherein the TNF ⁇ high affinity peptide is modified by a fluorescent group such as FITC, isotopic labeling, chemiluminescent group or enzyme labeling reagent modification.
- a fluorescent group such as FITC, isotopic labeling, chemiluminescent group or enzyme labeling reagent modification.
- the molecule is used to detect TNF ⁇ .
- the present invention also provides the use of the above various TNF ⁇ high affinity peptides for the preparation of TNF ⁇ antagonists.
- the invention also provides the use of the above various TNF ⁇ high affinity peptides for detection and clinical detection of mucinous TNF ⁇ expression.
- the invention also provides the use of a peptide gene having the nucleotide sequence of SEQ. ID. NO. 2 for the preparation of a TNF ⁇ antagonist and for use in tracer detection.
- the peptide of the present invention having the amino acid sequence of SEQ.ID.NO.1 can be used as a TNF ⁇ antagonist drug.
- the peptide has a strong affinity with TNF ⁇ , inhibits the biological activity of TNF ⁇ ., and resists TNF ⁇ -induced inflammatory damage.
- the peptide of the present invention having the amino acid sequence of SEQ.ID.NO.3 can also be used as a potential TNF ⁇ antagonist drug, and the peptide also has strong affinity with TNF ⁇ and can inhibit the biological activity of TNF ⁇ .
- Affinity test of the peptide with TNF ⁇ 96-well microtiter plate was coated with 2 ⁇ g/ml TNF ⁇ solution at 4 ° C overnight, and different concentrations of FITC-labeled 632 peptide were added and incubated for 2 h, then an anti-HRP-labeled anti-antigen was added.
- FITC monoclonal antibody was incubated for 1 h, then added to ABTS coloring solution for 1 h, and the OD410 value was read by a microplate reader, and GraphPad Prism 5 was plotted and analyzed. As a result, it was confirmed that the 632 peptide has a strong affinity with the TNF ⁇ protein, and the dissociation constant Kd was 138 nM.
- mice were divided into a blank group, an unrelated peptide control group, and an antagonist peptide group (632 peptide).
- an antagonist peptide group (632 peptide).
- mice were smeared with p-xylene on both sides of the right ear auricle.
- the mice were sacrificed, the left and right ears were cut out, and the ears were removed using an ear swelling ear device.
- the weight of the right ear of the same mouse was subtracted from the left ear. The ear weight is the degree of swelling of the mouse ear. Comparing the differences between the different groups, it was found that the peptide can significantly inhibit the swelling of the ear of the mouse, that is, the peptide can resist inflammation-induced damage.
- the peptide has a strong affinity for the TNF ⁇ protein, and the peptide can resist TNF ⁇ -induced inflammatory damage, and thus can be used to inhibit the biological activity of TNF ⁇ , thereby promoting inflammatory diseases in which TNF ⁇ is strongly associated. To the therapeutic effect.
- Figure 3 632 peptide inhibits the degree of inflammation in Kunming mice inflammation model.
- the desired peptide is artificially synthesized by a chemical method, and the peptide has an affinity for the TNF ⁇ protein.
- Lys (Dde)-WangResin was soaked in DCM for 10 min, then DCM was drained, then 25% by volume of 25% piperidine (piperidine/DMF) was added, and the piperidine was drained by bubbling with nitrogen for 20 min. DMF was added for 1 min, and after 6 cycles, it was drained, and the resin ninhydrin was detected to be blue.
- the product was: H-Lys (Dde)-WangResin.
- Three equivalents of Fmoc-Val-OH, HATU, DIEA in DMF were added to the resin.
- the DMF reaction solution was drained, DMF was added and nitrogen was blown for 1 minute, and then drained, and the mixture was circulated three times, and the ninhydrin detection resin was transparent.
- the product is: Fmoc-Val-Lys (Dde)-WangResin, and so on, to obtain a crude product. Purification was carried out on a Hanbang YCM C18 column using acetonitrile and Milli-Q water. Thereby, a peptide with high specificity and high activity is obtained.
- Affinity test results of the peptide and TNF ⁇ protein 2 ⁇ g/ml of TNF ⁇ protein was coated overnight on a 96-well microtiter plate at 4° C., BSA was blocked, and different concentrations of 632 peptide with FITC-labeled peptide were added and co-incubated. 2h, HRP-labeled anti-FITC monoclonal antibody was added for 1 h, then ABTS coloring solution was added. After color development for 1 h, the OD410 value was read by a microplate reader, and GraphPad Prism 5 was used for mapping and analysis. As a result, it was confirmed that the 632 peptide has a strong affinity with the TNF ⁇ protein, and the dissociation constant Kd was 138 nM.
- tumor necrosis factor alpha plays an important role in the development of inflammation.
- TNF ⁇ increases and induces a series of pathogenic reactions and related.
- cytokines causes tissue damage.
- Antagonistic treatment of TNF ⁇ in various inflammatory diseases such as rheumatoid arthritis and psoriasis has proven to be an effective treatment.
- current antagonists are concentrated on monoclonal antibodies and their derivatives, with strong side effects, especially immunogenicity, which limits drug use.
- the TNF ⁇ high-affinity peptide provided by the present invention not only has strong affinity with TNF ⁇ , but also inhibits the biological activity of TNF ⁇ , thereby resisting related inflammatory damage, and can be used as a potential TNF ⁇ antagonist drug.
- the modified 632 peptide can be used as a detection reagent to detect the expression of TNF ⁇ protein.
- SEQ. ID. NO. 4 (N-terminal ⁇ C-terminal): HYIDFRWDMKASGSPSGFWPS.
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Abstract
Description
Claims (7)
- 一种肿瘤坏死因子alpha的高亲和性肽,其特征在于,氨基酸序列为SEQ.ID.NO.1和SEQ.ID.NO.3之一;或者为SEQ.ID.NO.1和SEQ.ID.NO.3单次重复或多次重复的串联或分支的肽分子序列,其氨基酸序列为SEQ.ID.NO.4。
- 一种编码氨基酸序列为SEQ.ID.NO.1的肿瘤坏死因子alpha的高亲和性肽的基因,其特征在于,核苷酸序列为SEQ.ID.NO.2所示。
- 一种经过生物和化学基团修饰的肽,其特征在于,含有如权利要求1所述的肿瘤坏死因子alpha高亲和性肽作为核心序列的C端,或N端,或侧链基团上加抗原或药物或PEG修饰或其他分子基团共价修饰的结构特征分子。
- 一种经过修饰的肽,其特征在于,如权利要求1所述的肿瘤坏死因子alpha的高亲和性肽,其肿瘤坏死因子alpha高亲和性肽的加FITC荧光基团修饰、同位素标记、化学发光基团或酶标试剂修饰的分子,用于检测肿瘤坏死因子alpha。
- 如权利要求1所述的肿瘤坏死因子alpha高亲和性肽在制备肿瘤坏死因子alpha拮抗剂中的应用。
- 如权利要求1所述的肿瘤坏死因子alpha高亲和性肽在制备肿瘤坏死因子alpha表达检测物和临床检测物中的应用。
- 如权利要求2所述的肿瘤坏死因子alpha的高亲和性肽的基因在制备表达肿瘤坏死因子alpha拮抗剂中的应用和在示踪检测中的应用。
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US16/477,488 US20230192768A1 (en) | 2017-01-12 | 2018-01-11 | High-affinity peptide for tumor necrosis factor alpha and application thereof |
JP2019559138A JP7006968B2 (ja) | 2017-01-12 | 2018-01-11 | 腫瘍壊死因子αの高親和性ペプチド及びその適用 |
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CN201710019149.8 | 2017-01-12 | ||
CN201710019149.8A CN106831944A (zh) | 2017-01-12 | 2017-01-12 | 一种肿瘤坏死因子alpha的高亲和性肽及其应用 |
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