CN104147016B - 冷薄荷醇受体trpm8的低分子量调节剂的检测和用途 - Google Patents
冷薄荷醇受体trpm8的低分子量调节剂的检测和用途 Download PDFInfo
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- CN104147016B CN104147016B CN201410336374.0A CN201410336374A CN104147016B CN 104147016 B CN104147016 B CN 104147016B CN 201410336374 A CN201410336374 A CN 201410336374A CN 104147016 B CN104147016 B CN 104147016B
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- trpm8
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Abstract
本发明涉及冷薄荷醇受体TRPM8的低分子量调节剂的检测和用途。具体而言,本发明涉及冷薄荷醇受体TRPM8的新调节剂,使用这些调节剂调节TRPM8受体的方法;所述调节剂用于诱导冷感觉的用途;以及使用这些调节剂制备的物品和工具。
Description
本申请为2009年8月26日提交的、发明名称为“冷薄荷醇受体TRPM8的低分子量调节剂的检测和用途”的PCT申请PCT/EP2009/061019的分案申请,所述PCT申请进入中国国家阶段的日期为2011年2月28日,申请号为200980133390.7。
技术领域
本发明涉及冷薄荷醇受体TRPM8的新型调节剂,使用这些调节剂调节TRPM8受体的方法;所述调节剂诱导冷感觉的用途;以及使用这些调节剂制备的物品和组合物。
背景技术
冷薄荷醇受体TRPM8(也称为冷膜受体(CMR)1)属于“瞬时受体电位离子通道”家族,在一类特定的神经元中表达,在细胞膜中形成空穴(在各种情况下4个单元结合形成四聚体),其选择性的允许Ca2+离子通过。所述蛋白具有6个跨膜结构域以及胞质C和N末端。低温(优选10-25℃)能刺激该受体,产生信号转导,所述信号被神经***理解为冷感觉。该受体在2002年在多篇出版物中首次被描述为冷觉受体(Peier AM等,感觉冷刺激和薄荷醇的TRP通道,2002Mar8;108(5):705-15;McKemy DD等,冷受体的鉴定揭示了TRP通道在热感觉中的普遍作用,Nature.2002Mar7;416(6876):52-8;Zuker CS.神经生物学:冷离子通道,Nature.2002Mar7;416(6876):27-8)。
致冷的化合物,例如薄荷醇,很长时间以来在调味剂和芳香剂工业中具有重要作用,以产生新鲜和清洁感的结合。对于化合物薄荷醇来说,已显示其作为受体TRPM8的天然调节剂起作用(McKemy D.D.,Molecular Pain1,2005,16;McKemy D.D.,Nature416,2002,52-58;Peier A.M.,Cell108,2002,705-715;Dhaka A.,Annu.Rev.Neurosci.29,2006,135-161)。通过应用薄荷醇,激活TRPM8,使得Ca2+流入冷敏神经元中。产生的电信号最终被感知为冷感觉。薄荷醇浓度升高可导致刺激和麻醉效应。此外,许多出版物描述了具有类似效应的薄荷醇衍生物(英国专利1971#1315761;Watson H.R.,J.Soc.Cosmet.Chem.29,1978,185-200;Furrer S.M.,Chem.Percept.1,2008,119-126)。还有结构上与薄荷醇不相关的个别化合物也产生了显著的TRPM8调节效应,例如Icilin(Wei E.T.,J.Pharm.Pharmacol.35,1983,110-112;WO 2004/026840)、WS-23或专利申请WO 2007/019719中所列的化合物。
调节TRPM8受体和/或其昆虫中的类似物的物质的另一种效应是对昆虫的驱除作用(WO 2002/015692;WO 2004/000023、US 2004/0028714),其在抗肿瘤治疗(例如影响***肿瘤)、炎性疼痛/痛觉过敏的治疗中也具有活性,并且可用作TRPM8拮抗剂来有效治疗膀胱综合征或膀胱活动过度(Beck B.Cell Calcium,41,2007,285-294;LevineJ.D.Biochim.Biophys.Acta,Mol.Basis Dis.1772,2007,989-1003;Mukerji G.,BMCUrology6,2006,6;US 2003/0207904;US 2005/6893626,Dissertation BehrendtH.J.2004, Bochum;Lashinger E.S.R.Am.J.Physiol.Renal Physiol.Am JPhysiol Renal Physiol.2008Jun18.[在出版之前的电子版];PMID:18562636)。
然而,迄今为止许多TRPM8调节剂在效应强度、效应持续时间、皮肤/粘膜刺激、气味、味觉、溶解性和/或挥发性方面仍具有缺陷。
发明内容
因此,本发明的一个目的是鉴定调节TRPM8受体的新物质,其可用作迄今已知的调节剂的备选物。这些化合物还应当尤其适用于化妆品(例如护发、护肤、口腔护理)、营养品(饲料/食物)、纺织品、OTC产品(例如烧伤软膏)、药物(例如肿瘤治疗、膀胱虚弱)、包装领域或作为杀虫剂或驱虫剂。
发明详述:
1.通用术语定义:
在文献中,"TRPM8"有多个同义词:TRPP8、LTRPC6、CMR1、MGC2849、瞬时受体电位阳离子通道亚家族M成员8。在本发明的背景中,涵盖所有的名称。该受体的所有功能性修饰也包括在内,例如尤其是剪接变体,亚型,例如TRPM8CRA_a、TRPM8CRA_b,和来自各种生物体例如人、小鼠、大鼠中的所有类似受体。不同受体的核苷酸和氨基酸序列是本身已知的,在序列数据库中列出。因此,例如hTRPM8的序列信息可以登录号NM_024080表示。
在本发明的内容中,“调节剂”是指能在体内和/或体外作为TRPM8受体激动剂和/或拮抗剂起作用的化合物。
在本文中适当的调节剂可仅作为拮抗剂或激动剂起作用,或同时作为拮抗剂和激动剂起作用,此时,产生激动效应或拮抗效应取决于选择的具体调节剂的浓度。
在本文中,“激动剂”是指介导TRPM8受体活化,由此诱导Ca2+进入冷敏神经元,从而介导冷感觉的化合物。相反,“拮抗剂”是指阻碍TRPM8受体活化的化合物。
本发明的介导物可通过可逆或不可逆、特异性或非特异性结合TRPM8受体分子发挥其作用。通常,与受体分子的结合通过离子和/或非离子的例如疏水作用而非共价性的发生。在本文中,“特异性的”包括与一种或多种不同的TRPM8受体分子(例如不同来源或不同亚型的TRPM8分子)排他性的相互作用。相反,“非特异性的”是指所述调节剂与多种不同功能和/或序列的受体分子相互作用,但是可产生对TRPM8所希望的受体激动和/或拮抗调节(如上文所述)。
2.优选的实施方案
本发明首先涉及体外或体内调节冷薄荷醇受体TRMP8的方法,尤其是人TRPM8受体,其中所述受体与至少一种选自多环有机化合物的化合物接触,所述化合物在使用重组表达人TRPM8受体的细胞进行的细胞活性测试中、特别是在标准条件下调节了这些细胞对Ca2+离子的通透性。
在该部分中,“标准条件”理解为表示使用经人TRPM8转化的HEK293细胞进行的实验,该细胞加载了钙敏感染料(例如Fluo-4AM,即氟-4-乙酰氧基甲基酯)后加入测试化合物,并检测颜色变化,实验过程在37℃进行,如下文实施例3所述,或参见Behrendt等(2004),见上文)。
特别的,所述调节化合物包含至少2个4-至7-元环,其各自独立地为碳环或杂环、单环或多环,其中在这些环中至少2个可任选稠合或螺连接。合适的环连接的其他非限制性实例包括环碳原子和/或环杂原子间的化学单键,通过2-6元碳桥连基团连接,其中各个碳原子可被诸如N、O或S的杂原子替换。此外,所述环和桥连基可任选携带取代基,所述取代基选自酮基、-OH、-SH、-CN、-NO2、-C1-6-烷基或C2-4-链烯基,其中在烷基或链烯基中,一个或多个H原子可被诸如F、Cl、Br或I的卤素替换。
在本文中碳环包含4、5、6或7个碳原子;除环碳原子外,杂环包括1-3个相同或不同的环杂原子,例如O、N和S原子。在本文中的环可以各自独立地是饱和的、单或多不饱和的,例如芳环。
本发明使用的调节剂对于细胞Ca2+通透性具有激动或拮抗效应。具体而言,所述调节剂是至少一种选自下表1中的式1-19的化合物。
表1:根据本发明的调节剂
其中化合物可以化学纯或富集形式存在,为单个立体异构体或立体异构体混合物形式。此外,所述化合物可以是不带电的或其盐形式,例如酸加成盐。官能团可任选被等价的化学基团替换;氟原子可被其他卤素原子,例如Cl、Br或I替换;氧原子(例如醚基)可被相应的硫基团替换,反之亦然;酮基团可被相应的亚硫酰基替换。上面具体描述的化合物是本身已知的化学物质,可商购或通过常规有机合成方法获得。
因此,例如下列化合物是已知的:
化合物1,CAS号:99602-94-5(3R-顺式)
化合物2,CAS号:165753-08-2
化合物3,CAS号:338771-57-6
化合物4,CAS号:878942-21-3
化合物5,CAS号:748783-13-3
如果修饰形式或衍生物也表现出需要的生物学活性(受体TRPM8的调节),那么它们也是功能类似物或功能等价化合物。
此外,本发明还包括使具体公开的物质与固相载体偶联的衍生物;本领域技术人员已知可选择多种相应的接头/间隔基团。所述衍生化可在偶联至固相前进行,或仅仅由偶联产生。
本发明还涉及TRPM8受体调节剂、尤其是激动剂在诱导人和/或动物的冷感觉,尤其是局部的,即皮肤或口腔的冷感觉中的用途,其中所述调节剂如上文所定义。当化合物在上述细胞活性测试中表现出对于hTRPM8的激动效应时,称为“诱导冷感觉”。
本发明还涉及TRPM8受体调节剂作为药物组合物的活性成分的用途,其中所述调节剂如上文所定义。
本发明还涉及TRPM8受体调节剂在***癌治疗、膀胱虚弱治疗或疼痛治疗中的用途,其中所述调节剂如上文所定义。
本发明还涉及TRPM8受体调节剂作为昆虫驱虫剂或杀虫剂的用途,其中所述调节剂如上文所定义。
本发明还涉及TRPM8受体调节剂在诱导对以多种加工形式(例如纤维、织物、模塑)的包装(例如由纸或塑料制成)的冷感觉中的用途,其中特别是在接触包装材料时,冷感觉变得显著,其中所述调节剂如上文所定义。在该部分内容中,所述物质可通过多种途径与包装材料相结合:例如通过旋转涂层、凹印、微囊化形式、直接引入到包装材料中(例如挤压)、调节剂的适当衍生物的共价偶联(通过适当的间隔物/接头基团来帮助分子与包装材料可逆或不可逆地结合)。本领域技术人员已知合适的方法。
本发明还涉及TRPM8受体调节剂在诱导纺织品的冷感觉中的用途,其中所述调节剂如上文所定义。在该部分内容中,所述物质可通过多种途径与纺织品相结合:例如通过旋转涂层、凹印、微囊化形式、直接引入到纺织品材料中(例如挤压)、调节剂的适当衍生物的共价偶联(通过适当的间隔物/接头基团来帮助分子与纺织品材料可逆或不可逆地结合)。本领域技术人员已知合适的方法。
本发明还涉及根据上述定义的物质本身作为TRPM8受体调节剂的用途,尤其是作为激动剂和/或拮抗剂。
本发明还涉及包含至少一种上述定义的化合物的组合物。特别的,所述组合物选自:
a)药物组合物,例如抗肿瘤组合物,治疗膀胱疾病的组合物,止痛剂;
b)食物,例如冰激凌、奶油冻、乳油、饮料、糕饼。
c)口腔护理组合物,例如牙膏、漱口水、口香糖、口气清新剂。
d)护肤或护发组合物,例如防晒霜、晒斑膏、洗剂、洗发水、硬膏、漱口剂、洗液、剃毛霜、调节剂、洗面奶、肥皂、沐浴乳和沐浴泡沫、止汗剂、除臭剂。
e)驱虫剂、杀虫剂。
除了各种具体组合物的常规成分外,所述组合物包含有效量的至少一种本发明的调节剂。在该部分内容中,“有效”表示所述调节剂的浓度足以带来需要的效应,例如药理学效果或感觉效应,例如在应用所述组合物(例如应用至皮肤)后冷的嗅觉效应。
任选地,根据本发明的化合物可与其他已知的活性成分组合,尤其是那些具有相同效应的。例如,可与已知的制冷化合物组合,例如薄荷醇、薄荷酮、N-乙基-p-薄荷烷甲酰胺(WS-3)、N-2,3-三甲基-2-异丙基丁酰胺(WS-23)、乳酸薄荷酯( ML)、薄荷酮甘油缩醛( MGA)、琥珀酸单薄荷酯()、戊二酸单薄荷酯、O-薄荷基甘油、N,N-二甲基琥珀酸酰胺薄荷酯。
本发明还涉及纺织品,例如衬衫、长裤、袜子、毛巾,其采用至少一种上述定义的化合物整理(finish)(尤其在表面上)。
本发明还涉及与至少一种上述定义的化合物结合的包装材料。
现参照下述非限制性的工作实施例来描述本发明。
附图说明
图1显示了来自根据序列数据库登录号NM_024080的hTRPM8受体的(a)mRNA序列和(b)氨基酸序列。
图2显示了编码hTRPM8的质粒pInd_M8的载体图谱,其已用于转染HEK293细胞。
具体实施方式
实验部分:
实施例1–人TRPM8的克隆
人TRPM8受体克隆的起点是LnCaP cDNA文库。其例如可从商业获得(例如BioChain,Hayward,USA)或使用标准试剂盒从雄激素敏感的人***癌细胞系LnCaP(例如ATCC,CRL1740或ECACC,89110211)制备。
可使用标准方法PCR扩增和克隆编码TRPM8的序列(参见图1A;和http://www.ncbi.nlm.nih.gov/entrez/viewer.fcgi?db=nuccore&id=109689694)。通过这种方法分离的人TRPM8基因被用于制备质粒pInd_M8,其构建通过图2的质粒图谱进行说明。
或者,TRPM8基因也可通过合成制备。
实施例2-HEK293测试细胞的传代
制备稳定转染人TRPM8DNA(参见上述质粒pInd-M8)的HEK293细胞系作为测试细胞***。在本文中优选通过引入的质粒提供用四环素诱导TRPM8表达的HEK293。
本领域技术人员已知生产适当的测试细胞***的方法。例如,本发明使用的细胞的制备详情参见Behrendt H.J.等,Br.J.Pharmacol.141,2004,737-745或Behrendt的论文“Vergleichende funktionale Untersuchungen des Hitze-Capsaicin-Rezeptors(TRPV1)und des-Menthol-Rezeptors(TRPM8)in rekombinanten und nativenZellsystemen”.[热辣椒碱受体(TRPV1)和冷薄荷醇受体(TRPM8)在重组和天然细胞***中的功能比较研究],参见:
http://www-brs.ub.ruhr-uni-bochum.de/netahtml/HSS/Diss/BehrendtHansJoerg/diss.pdf。
特别引用这些文献公开的内容。
实施例3-TRPM8调节剂的测定
采用与已描述在文献中的试验相当的试验,参见Behrendt H.J.等人,Br.J.Pharmacol.141,2004,737-745。受体的激动或拮抗通过Ca2+敏感性染料(例如FURA,Fluo-4等)来量化。根据其自身特点,激动剂使Ca2+信号增加,拮抗剂例如在薄荷醇存在下使Ca2+信号减少(各自通过染料Fluo-4检测,其具有由Ca2+导致的不同的荧光性质)。
a)试验方法:
首先,在细胞培养瓶中以本身已知的方法制备转化的HEK细胞的新鲜培养液。使用胰蛋白酶从细胞培养瓶上分离测试细胞HEK293-TRPM8,按每100μl培养基40000细胞/孔接种在96孔板中(Greiner#655948聚-D-赖氨酸-涂覆)。为诱导受体TRPM8,向生长培养基中加入四环素(DMEM/HG,10%无四环素FCS,4mM L-谷氨酰胺,15μg/ml灭菌素,100μg/ml潮霉素B,1μg/ml四环素)。第二天,细胞加载Fluo-4AM染料,进行试验。使用下列步骤:
-在每100μl培养基(DMEM/HG,10%无四环素FCS,4mM L-谷氨酰胺,15μg/ml灭菌素,100μg/ml潮霉素B,1μg/ml四环素)中各自加入100μl/孔的染料溶液Ca-4kit(RB141,Molecular Devices)。
-在培养箱中孵育30分钟/37℃/5%CO2,30分钟/RT。
-制备供试物质(在200μl HBSS缓冲液中,不同浓度)和阳性对照(不同浓度的薄荷醇、icilin和离子霉素,在200μl HBSS缓冲液中)和阴性对照(仅200μl HBSS缓冲液)。
-以50μl/孔的量加入试验物质,在485nm激发、520nm发射测定荧光的变化(例如测定仪器FLIPR,Molecular Devices或NovoStar,BMG),评价不同物质/浓度的效果,确定EC50值。
试验物质以浓度0.1-200μM一式三份进行测定。通常将化合物保存在DMSO溶液中,稀释至最大DMSO浓度2%进行测定。
b)试验结果
本发明调节剂测定的EC50值总结于下表2。
表2:试验物质对于人受体TRPM8的活性
该评价令人惊讶的发现,首次能够制备结构显著不同于已知的TRPM8受体激动剂,例如(-)薄荷醇、icilin和其他Behrendt H.J.等在Br.J.Pharmacol.141,2004,737-745(参见表1)中描述的激动剂的TRPM8受体激动剂,并且,在某些情况中其具有比(-)薄荷醇更好的活性,或与icilin效果相当。
实施例4–漱口剂的制备
制备下列组成的漱口剂:
乙醇95% 177ml
山梨醇70% 250g
根据表2的TRPM8激动剂,
F127,
为制备漱口剂,以所述量混合上述成分。
本文特别参考所引用的文献资源的公开内容。
Claims (16)
1.体外调节冷薄荷醇受体TRMP8的方法,其中所述受体与至少一种选自以下的化合物接触,所述化合物在使用重组表达人TRPM8受体的细胞进行的细胞活性测试中调节了这些细胞对Ca2+离子的通透性:
2.如权利要求1所述的方法,其中所述调节剂对于细胞Ca2+离子通透性具有激动或拮抗效应。
3.TRPM8受体调节剂在制备诱导人和/或动物的冷感觉的组合物中的用途,其中所述调节剂如权利要求1所定义。
4.TRPM8受体调节剂在制备用于***癌治疗、膀胱虚弱治疗或疼痛治疗的组合物中的用途,其中所述调节剂如权利要求1所定义。
5.TRPM8受体调节剂在制备作为昆虫驱虫剂或杀虫剂的组合物中的用途,其中所述调节剂如权利要求1所定义。
6.TRPM8受体调节剂在诱导包装的冷感觉中的用途,其中所述调节剂如权利要求1所定义。
7.TRPM8受体调节剂在诱导纺织品的冷感觉中的用途,其中所述调节剂如权利要求1所定义。
8.组合物,其包含至少一种选自如权利要求1所述的化合物2和3的化合物。
9.组合物,其包含至少一种如权利要求1所述的化合物,所述组合物选自:
a)药物组合物;
b)食物;
c)口腔护理组合物;
d)护肤或护发组合物;或
e)昆虫驱虫剂、杀虫剂。
10.如权利要求9所述的组合物,其为药物组合物,选自抗肿瘤组合物、膀胱疾病治疗组合物或止痛组合物。
11.如权利要求9所述的组合物,其为食物,选自冰激凌、奶油冻、乳油、饮料或糕饼。
12.如权利要求9所述的组合物,其为口腔护理组合物,选自牙膏、漱口水或口香糖。
13.如权利要求9所述的组合物,其为护肤或护发组合物,选自防晒霜、晒斑膏、洗剂、洗发水或硬膏。
14.纺织品,其采用至少一种如权利要求1所述的化合物整理。
15.如权利要求14所述的纺织品,其为衬衫、长裤、袜子或毛巾。
16.与至少一种如权利要求1所述的化合物结合的包装材料。
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