Cell reports:磷酸化BAD-BH3类似物或可重建β胰岛细胞功能治疗糖尿病

2015-02-02 佚名 生物谷

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近日来自美国哈佛医学院的研究人员在国际期刊cell reports发表了他们一项最新研究成果。他们通过研究发现了一种在基因和药理学上都与磷酸化BAD-BH3结构域具有相似性的类似物能够促进β细胞在受到应激刺激时产生自我保护效应并维持β细胞存活和正常功能。这项研究或对治疗I型糖尿病具有重要意义。
 
文章指出,促进β细胞存活并维持β细胞产生胰岛素应答葡萄糖刺激能够大大增加β细胞替代疗法治疗I型糖尿病的效果。研究人员发现磷酸化BAD-BH3结构域类似物能够有效促进β细胞在受到应激刺激时产生自我保护效应的能力,同时将这些发现用于改进供体胰岛细胞移植,能够促进糖尿病模型小鼠中β细胞在移植胰岛中的存活,重建胰岛素合成释放能力,并能够改善小鼠糖尿病状态。对机制进行研究发现,β细胞在这种背景下的存活不仅是因为磷酸化BAD失去了对促细胞存活蛋白BCL-2的抑制功能,同时,磷酸化BAD还能够刺激葡糖激酶的激活。
 
因此,研究人员通过实验证明,磷酸化BAD-BH3结构域类似物对促进β细胞存活和维持β细胞合成分泌胰岛素功能具有重要意义,或可用于重建糖尿病人功能性β细胞数量,进一步治疗糖尿病。
 
原始出处
 
Sanda Ljubicic, Klaudia Polak, Accalia Fu, Jessica Wiwczar, Benjamin Szlyk, Yigang Chang,Juan C. Alvarez-Perez, Gregory H. Bird, Loren D. Walensky, Adolfo Garcia-Oca?a, Nika N. Danial.Phospho-BAD BH3 Mimicry Protects β Cells and Restores Functional β Cell Mass in Diabetes
 

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    2015-02-20 baoya
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    2015-05-27 维他命
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    2015-04-11 x35042875

    AKI对心衰临床治疗意义重大,但依然需要研究检验其适用性

    0

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糖尿病巨头诺和诺德(Novo Nordisk)近日宣布,将瑞士定为商业化推出糖尿病鸡尾酒Xultophy(IDegLira)的首个欧盟国家,该药同时将在2015年间陆续在其他欧盟成员国上市。Xultophy是全球首个长效胰岛素和GLP-1受体激动剂复方药,兼具降糖和减肥功效,对广大2型糖尿病群体而言,是一大福音!业界预测,Xultophy将成为诺和诺德又一枚重磅产品,年销售峰值将突破10亿美元

Nature:代谢与肿瘤— —糖尿病治疗药物也可治肿瘤

近日,国际顶尖期刊nature刊登了来自美国安德森癌症研究中心Elsa R. Flores研究小组关于IAPP驱动代谢重编程抑制p53缺失的肿瘤生长的最新研究发现。 研究人员指出,在人类肿瘤中通常会发生TP53的改变,之前研究也已证明,在小鼠中重新激活TP53能够抑制肿瘤生长。但事实证明,重激活TP53这一策略非常难以实施,因此研究人员试图通过调控TP53同家族蛋白TP63和TP73寻找另外一条

Diabetes:糖尿病治疗这么简单?服用益生菌药片就可以降血糖

美国Cornell University近日在Diabetes上发表了一篇有关糖尿病治疗的新研究,他们让大鼠服用改造过的表达GLP-1的乳酸杆菌,得到了意想不到的降血糖效果。 胰高血糖素样肽(Glucogan-Like Peptide-1, GLP-1)是一种主要由肠道上皮细胞所产生的激素,属于一种肠促胰岛素(incretin)。已知的是GLP-1有诸多生理作用包括促进胰岛B细胞分泌胰岛素,

Environ Health Perspect:空气污染可导致糖尿病发病风险

目前尚无流行病学证据和系统性评价来证明空气污染可能是是糖尿病的一个危险因素。 我们系统性回顾了空气污染与糖尿病之间有关的流行病学证据,并对2型糖尿病 (T2DM)的研究结果进行了综合性分析。 我们在电子文献数据库中搜索了与空气污染(颗粒浓度和交通污染)与糖尿病(1型,2型或者妊娠)之间有关的研究,时间截止到2014年4月29号。我们系统性评估了这些研究的偏倚带来的风险和其中潜在的混杂因