THBS4(血小板反应蛋白4,Thrombospondin-4)属于血小板反应蛋白(Thrombospondin,TSP)基因家族,该家族包含5个成员(TSP1-5),其共性是通过分泌性糖蛋白调控细胞间相互作用、细胞黏附、迁移及组织重塑。THBS4主要在细胞外基质(ECM)中发挥作用,其表达产物是一种多结构域蛋白,包含N端结构域、Ⅲ型重复序列(参与钙离子结合)和C端结构域,能结合胶原、整合素(细胞表面受体)等分子,影响细胞信号传导。其生物学功能包括促进心肌和骨骼肌的损伤修复、调节神经元突触可塑性(神经连接的可调节性),并在心血管发育中抑制过度血管生成(通过抗血管生成作用)。THBS4的突变可能导致其与ECM的相互作用异常,与扩张型心肌病(心脏扩大伴功能减退)、骨关节炎(关节软骨退化)等疾病相关。若THBS4过表达,可能增强组织纤维化(如心肌纤维化),而低表达可能延缓伤口愈合或加剧神经退行性病变(如阿尔茨海默病)。该基因与家族成员THBS1/2共享抗血管生成特性,但THBS4独特地高表达于肌肉和神经系统。专业术语中,"细胞外基质(ECM)"指细胞外的支持网络,"整合素"是介导细胞与ECM黏附的受体蛋白,"突触可塑性"描述神经元连接强度的适应性变化。目前中文术语"血小板反应蛋白"为直译,部分文献保留英文缩写TSP。
The protein encoded by this gene belongs to the thrombospondin protein family. Thrombospondin family members are adhesive glycoproteins that mediate cell-to-cell and cell-to-matrix interactions. This protein forms a pentamer and can bind to heparin and calcium. It is involved in local signaling in the developing and adult nervous system, and it contributes to spinal sensitization and neuropathic pain states. This gene is activated during the stromal response to invasive breast cancer. It may also play a role in inflammatory responses in Alzheimer's disease. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Apr 2015]
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THBS4基因(以及对应的蛋白质)的细胞分布位置:
THBS4基因的本体(GO)信息:
名称 |
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4151 PI3K-Akt signaling pathway [PATH:hsa04151] |
4512 ECM-receptor interaction [PATH:hsa04512] |
4145 Phagosome [PATH:hsa04145] |
4510 Focal adhesion [PATH:hsa04510] |
5144 Malaria [PATH:hsa05144] |
名称 |
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Signaling by PDGF |
疾病名称 | 关系值 | NofPmids | NofSnps | 来源 |
Myocardial Infarction | 0.013278246 | 5 | 2 | BeFree_GAD_LHGDN |
Lymphoma, T-Cell, Cutaneous | 0.00272435 | 1 | 0 | LHGDN |
Atherosclerosis | 0.002638474 | 2 | 1 | BeFree_GAD |
Fetal Membranes, Premature Rupture | 0.002367032 | 1 | 0 | GAD |
Premature Obstetric Labor | 0.002367032 | 1 | 0 | GAD |
Pre-Eclampsia | 0.002367032 | 1 | 0 | GAD |
Maduromycosis | 0.002367032 | 1 | 0 | GAD |
Coronary Arteriosclerosis | 0.002367032 | 1 | 0 | GAD |
Myocardial Ischemia | 0.002367032 | 1 | 0 | GAD |
Infection of amniotic sac and membranes, unspecified, unspecified trimester, not applicable or unspecified | 0.002367032 | 1 | 0 | GAD |
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