ARHGEF1(Rho Guanine Nucleotide Exchange Factor 1)属于RhoGEF基因家族,该家族成员通过激活Rho GTPases(如RhoA、Rac1和Cdc42)调控细胞骨架重组、细胞迁移和信号转导。ARHGEF1特异性激活RhoA,通过其DH(Dbl homology)和PH(Pleckstrin homology)结构域促进GDP-GTP交换,从而影响细胞形态和运动。其主要在造血细胞(如T细胞、B细胞和巨噬细胞)中表达,参与免疫突触形成、淋巴细胞迁移和炎症反应调控。突变可能导致ARHGEF1功能异常,例如某些错义突变会削弱其与RhoA的结合能力,破坏免疫细胞功能,增加自身免疫疾病(如系统性红斑狼疮)或免疫缺陷风险。过表达ARHGEF1会过度激活RhoA通路,可能促进细胞异常迁移,与癌症转移(如白血病、乳腺癌)相关;而表达降低则可能导致免疫细胞迁移障碍或炎症反应失调。ARHGEF1还与神经系统疾病相关,如阿尔茨海默病中其表达变化可能影响小胶质细胞活性。RhoGEF家族共性包括通过DH/PH结构域激活Rho GTPases,参与细胞极性、胞质分裂和基因转录调控。ARHGEF1的功能复杂性使其成为免疫疾病和癌症治疗的潜在靶点。
Rho GTPases play a fundamental role in numerous cellular processes that are initiated by extracellular stimuli that work through G protein coupled receptors. The encoded protein may form complex with G proteins and stimulate Rho-dependent signals. Multiple alternatively spliced transcript variants have been found for this gene, but the full-length nature of some variants has not been defined. [provided by RefSeq, Jul 2008]
卢GTP酶在由通过G蛋白偶联受体工作外刺激引发许多细胞过程中发挥了重要作用。所编码的蛋白质可形成为G蛋白复合物和刺激的Rho依赖性信号。多个可变剪接转录物变体已被发现对于此基因,但一些变体的全长性质尚未定义。 [由RefSeq的,2008年7月提供]
ARHGEF1基因(以及对应的蛋白质)的细胞分布位置:
ARHGEF1基因的本体(GO)信息:
名称 |
---|
4810 Regulation of actin cytoskeleton [PATH:hsa04810] |
4611 Platelet activation [PATH:hsa04611] |
4270 Vascular smooth muscle contraction [PATH:hsa04270] |
5200 Pathways in cancer [PATH:hsa05200] |
5205 Proteoglycans in cancer [PATH:hsa05205] |
名称 |
---|
Axonal growth inhibition (RHOA activation) |
G alpha (12/13) signalling events |
GPCR downstream signaling |
p75 NTR receptor-mediated signalling |
p75NTR regulates axonogenesis |
Signal Transduction |
Signaling by GPCR |
Signalling by NGF |
疾病名称 | 关系值 | NofPmids | NofSnps | 来源 |
Leukemia, Myelocytic, Acute | 0.002714419 | 10 | 0 | BeFree |
leukemia | 0.001900093 | 7 | 0 | BeFree |
Myeloid Leukemia, Chronic | 0.001628651 | 6 | 0 | BeFree |
Undifferentiated leukemia | 0.000814326 | 3 | 0 | BeFree |
Acute Undifferentiated Leukemia | 0.000814326 | 3 | 0 | BeFree |
Blast Phase | 0.000542884 | 2 | 0 | BeFree |
Adenocarcinoma | 0.000271442 | 1 | 0 | BeFree |
Vulval intraepithelial neoplasia | 0.000271442 | 1 | 0 | BeFree |
Mammary Neoplasms | 0.000271442 | 1 | 0 | BeFree |
Malignant neoplasm of breast | 0.000271442 | 1 | 0 | BeFree |
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