J Mol Endocrinol:通过抑制IGF-I受体活性来治疗甲状腺相关性眼病!

2017-12-31 cuiguizhong MedSci原创

美国安娜堡密歇根大学眼科与视觉科学系的Mohyi M近日在J Mol Endocrinol发表了一项重要的工作,他们对胰岛素样生长因子-I受体(IGF-IR)参与甲状腺相关性眼病(TAO)的发病机制进行了研究,并提出可以通过抑制IGF-1R的活性来治疗中度至重度的TAO患者。

美国安娜堡密歇根大学眼科与视觉科学系的Mohyi M近日在J Mol Endocrinol发表了一项重要的工作,他们对胰岛素样生长因子-I受体(IGF-IR)参与甲状腺相关性眼病(TAO)的发病机制进行了研究,并提出可以通过抑制IGF-1R的活性来治疗中度至重度的TAO患者。

甲状腺相关性眼病(TAO)是一种令人头痛的和了解甚少的自身免疫性疾病,其自身免疫涉及眼睛表面和周围的组织。在TAO中,眼窝可能会被感染,也有可能经历大幅度的变形、毁容,引起视力丧失。由于致病性不确定的原因,目前还没有药物得到批准,来用于治疗TAO。

甲状腺相关性眼病通常表现为Graves病的一部分。Graves病可以引起对促甲状腺激素受体的免疫耐受(TSHR)的丧失,导致针对该蛋白质和甲状腺机能亢进的激活抗体产生。TSHR和这些抗体在TAO发生发展中的作用了解很少。他们之前报道的过去二十年的研究显示,胰岛素样生长因子-I受体(IGF-IR)也可能参与TAO的发病机制。在Graves病的患者中检测到针对IGF-1R激活的抗体。患有该疾病的患者眼眶成纤维细胞中的启动信号可以活化这些抗体。此外,他们已经确定在TSHR和IGF-IR之间的存在功能性和物理性相互作用。重要的是,可以通过抑制IGF-1R的活性来抑制从任一受体引发的信号传导。

这些发现进一步完善了在活跃的甲状腺相关性眼病中通过靶向IGF-IR来进行治疗的基本原理。最近通过teprotumumab(一种人类IGF-1R抑制抗体)来治疗中度至重度TAO患者的试验表明,该药物具有潜在的有效性和安全性。同时,其他自身免疫性疾病也可能通过这种治疗方法得到缓解。

原文出处:

Mohyi, M. and T.J. Smith, IGF-I receptor and thyroid-associated ophthalmopathy. J Mol Endocrinol, 2017.

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    2018-05-15 xxxx1049
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    2018-01-02 pps20023
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    2017-12-31 有备才能无患

    美国安娜堡密歇根大学眼科与视觉科学系的MohyiM近日在JMolEndocrinol发表了一项重要的工作.他们对胰岛素样生长因子-I受体(IGF-IR)参与甲状腺相关性眼病(TAO)的发病机制进行了研究.并提出可以通过抑制IGF-1R的活性来治疗中度至重度的TAO患者.

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