An adult case of NOTCH3 mutation in pulmonary artery hypertension.

An adult case of NOTCH3 mutation in pulmonary artery hypertension.
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DOI:
10.1002/pul2.12050
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发表时间:
2022-01
影响因子:
2.6
通讯作者:
Sahay, Sandeep
Sahay, Sandeep
中科院分区:
医学4区
文献类型:
--
作者:
Padhye, Akhilesh A.;Sahay, Sandeep

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NOTCH 3基因编码一种几乎仅在肺血管平滑肌细胞中表达的单次跨膜蛋白受体。它在调节细胞表型和增殖中起关键作用。该蛋白本身由34个表皮生长因子(EGF)样重复序列,3个Notch/Lin-12重复序列,一个跨膜结构域,7个锚蛋白重复序列和一个富含脯氨酸,谷氨酸,丝氨酸和苏氨酸的序列组成。当附近细胞上的细胞膜结合配体(Jagged-1)与EGF样重复序列相互作用并结合时,经典notch信号传导被中继,EGF样重复序列构成受体的细胞外结构域。这触发Notch细胞内结构域的蛋白酶驱动的切割,其易位到细胞核并激活基因家族HES的转录。下游效应是血管平滑肌细胞表型转换为促存活、增殖表型,导致PAH(图1)。5
DISCUSSIONThe NOTCH3 gene encodes a single‐pass transmembrane protein receptor expressed almost exclusively in pulmonary vascular smooth muscle cells. It plays a key role in regulating cell phenotype and proliferation. The protein itself consists of 34 epidermal growth factor (EGF)‐like repeats, three Notch/Lin‐12 repeats, a transmembrane domain, seven ankyrin repeats, and a sequence rich in proline, glutamic acid, serine, and threonine. 6 Canonical notch signaling is relayed when cell membrane‐bound ligands (Jagged‐1) on nearby cells interact and bind with EGF‐like repeats, which compose the extracellular domain of the receptor. This triggers protease‐driven cleavage of the Notch intracellular domain that translocates to the nucleus and activates transcription of gene family HES. The downstream effect is phenotypical switching of vascular smooth muscle cells to a prosurvival, proliferative phenotype causing PAH (Figure 1). 5
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发表时间: 2020-10-16
期刊: Genes
影响因子: 3.5
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