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Bcl-2-Protein Family as Modulators of IP3 Receptors and Other Organellar Ca2+ Channels.
Cold Spring Harbor Perspectives in Biology ( IF 7.2 ) Pub Date : 2020-04-01 , DOI: 10.1101/cshperspect.a035089
Hristina Ivanova 1 , Tim Vervliet 1 , Giovanni Monaco 1 , Lara E Terry 2 , Nicolas Rosa 1 , Mariah R Baker 3 , Jan B Parys 1 , Irina I Serysheva 3 , David I Yule 2 , Geert Bultynck 1
Affiliation  

The pro- and antiapoptotic proteins belonging to the B-cell lymphoma-2 (Bcl-2) family exert a critical control over cell-death processes by enabling or counteracting mitochondrial outer membrane permeabilization. Beyond this mitochondrial function, several Bcl-2 family members have emerged as critical modulators of intracellular Ca2+ homeostasis and dynamics, showing proapoptotic and antiapoptotic functions. Bcl-2 family proteins specifically target several intracellular Ca2+-transport systems, including organellar Ca2+ channels: inositol 1,4,5-trisphosphate receptors (IP3Rs) and ryanodine receptors (RyRs), Ca2+-release channels mediating Ca2+ flux from the endoplasmic reticulum, as well as voltage-dependent anion channels (VDACs), which mediate Ca2+ flux across the mitochondrial outer membrane into the mitochondria. Although the formation of protein complexes between Bcl-2 proteins and these channels has been extensively studied, a major advance during recent years has been elucidating the complex interaction of Bcl-2 proteins with IP3Rs. Distinct interaction sites for different Bcl-2 family members were identified in the primary structure of IP3Rs. The unique molecular profiles of these Bcl-2 proteins may account for their distinct functional outcomes when bound to IP3Rs. Furthermore, Bcl-2 inhibitors used in cancer therapy may affect IP3R function as part of their proapoptotic effect and/or as an adverse effect in healthy cells.

中文翻译:

Bcl-2-蛋白质家族作为 IP3 受体和其他细胞器 Ca2+ 通道的调节剂。

属于 B 细胞淋巴瘤 2 (Bcl-2) 家族的促凋亡蛋白和抗凋亡蛋白通过启用或抵消线粒体外膜透化作用对细胞死亡过程发挥关键控制作用。除了这种线粒体功能,一些 Bcl-2 家族成员已成为细胞内 Ca2+ 稳态和动力学的关键调节剂,显示出促凋亡和抗凋亡功能。Bcl-2 家族蛋白特异性靶向几种细胞内 Ca2+ 转运系统,包括细胞器 Ca2+ 通道:肌醇 1,4,5-三磷酸受体 (IP3Rs) 和兰尼碱受体 (RyRs),介导来自内质网的 Ca2+ 通量的 Ca2+-释放通道,以及电压依赖性阴离子通道 (VDAC),其介导 Ca2+ 穿过线粒体外膜进入线粒体。尽管 Bcl-2 蛋白与这些通道之间的蛋白质复合物的形成已被广泛研究,但近年来的一项重大进展是阐明 Bcl-2 蛋白与 IP3Rs 的复杂相互作用。在 IP3R 的一级结构中确定了不同 Bcl-2 家族成员的不同相互作用位点。这些 Bcl-2 蛋白的独特分子谱可能解释了它们与 IP3R 结合时的不同功能结果。此外,用于癌症治疗的 Bcl-2 抑制剂可能会影响 IP3R 功能,作为其促凋亡作用的一部分和/或作为对健康细胞的不利影响。在 IP3R 的一级结构中确定了不同 Bcl-2 家族成员的不同相互作用位点。这些 Bcl-2 蛋白的独特分子谱可能解释了它们与 IP3R 结合时的不同功能结果。此外,用于癌症治疗的 Bcl-2 抑制剂可能会影响 IP3R 功能,作为其促凋亡作用的一部分和/或作为对健康细胞的不利影响。在 IP3R 的一级结构中确定了不同 Bcl-2 家族成员的不同相互作用位点。这些 Bcl-2 蛋白的独特分子谱可能解释了它们与 IP3R 结合时的不同功能结果。此外,用于癌症治疗的 Bcl-2 抑制剂可能会影响 IP3R 功能,作为其促凋亡作用的一部分和/或作为对健康细胞的不利影响。
更新日期:2020-04-01
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