The invention discloses four kinds of 37 amino acid polypeptides of chickpea, a preparation method thereof and its application in preparing medicine or functional food for treating diabetes mellitus. Each peptide is composed of 37 amino acids. Six cysteines and three pairs of disulfide bridge bonds formed within the molecule are highly conserved. These three pairs of disulfide bonds form the domain of cysteine junction. Chickpea has 4 kinds of 37 amino acid polypeptides which can be dissolved in polar solvents such as water. They are heat-stable and resistant to digestive tract protease hydrolysis. The cost of preparation is lower than that of insulin and other peptide drugs; the quality and function of morbid pancreas can be restored to varying degrees not only by treating symptoms and symptoms, but also by treating root causes; oral dosage forms can be developed to reduce or eliminate insulin resistance, which is more convenient than insulin and other peptide drugs; there is no risk of hypoglycemia in use; chickpeas are derived from edible plants and have no toxic side effects. Effect.
【技术实现步骤摘要】
预防和治疗糖尿病的多肽、其制备方法和应用
本专利技术属于生物医药领域,更具体地,涉及一种预防和治疗糖尿病的多肽类化合物、其制备方法和应用。
技术介绍
糖尿病(diabetes)是一种糖、蛋白质和脂肪代谢障碍性疾病,在全球发病率都很高,已成为继心血管和肿瘤并列的三大“健康杀手”。我国患病率已达10%,患病总人数已超过了1亿,居世界之首。由糖尿病引发的并发症如心脑血管疾病、肾功能衰竭、两眼失明和糖尿病足严重威胁人的生命和生活质量。迄今,还没有真正可治疗糖尿病的药物面世。1980年,世界卫生组织(WorldHealthOrganization,WHO)将糖尿病分为:胰岛素依赖性糖尿病(insuin-dependentdiabetesmelitus,IDDM,又称1型,T1D),非胰岛素依赖性糖尿病(noninsuin-dependentdiabetesmelitus,NIDDM,又称2型,T2D)及其他类型糖尿病,如妊娠期糖尿病,但孕期后有些会自行消失,也有不能消失的病例,孕期糖尿病对胎儿的影响还在研究中。1型糖尿病是一种自身性免疫疾病,患者主要是青少年人群,常起病于幼 ...
【技术保护点】
1.多肽,其特征在于,所述多肽分子内含有6个半胱氨酸,分别位于位点3、位点7、位点15、位点20、位点22和位点32,其中位点3与位点20、位点7与位点22和位点15与位点32形成3对二硫桥键,这3对二硫桥键形成半胱氨酸结的结构域。
【技术特征摘要】
1.多肽,其特征在于,所述多肽分子内含有6个半胱氨酸,分别位于位点3、位点7、位点15、位点20、位点22和位点32,其中位点3与位点20、位点7与位点22和位点15与位点32形成3对二硫桥键,这3对二硫桥键形成半胱氨酸结的结构域。2.如权利要求1所述的多肽,其特征在于,具有以下序列1至4中任一项所示的氨基酸序列:序列1:ASCNGVCSPFEMPPCGSSACRCIPVGLVVGNCRHPSG;序列2:ISCNGVCSPFDIPPCGTPLCRCIPAGLFVGNCRHPYG;序列3:VSCNGVCSPFDIPPCGTPLCRCIPYGLFVGKCRHPYG;序列4:VSCNGVCSPFEMPPCGSSACRCIPYGLVVGKCRHPSG。3.如权利要求1所述的多肽,其特征在于,所述多肽提取自鹰嘴豆。4.如权利要求1~3任意一项所述的多肽的制备方法,其特征在于,包括如下步骤:(1)将鹰嘴豆浸泡萌发,捣碎后用0.1~0.2mol/L的乙酸在10~20℃提取10~12小时,渣浆分离,取分离液;(2)将步骤(1)获得的分离液用陶瓷膜过滤...
【专利技术属性】
技术研发人员:陈正望,陈威,顿新鹏,张欣,童宇星,
申请(专利权)人:华中科技大学,
类型:发明
国别省市:湖北,42
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