TSC1(结节性硬化症复合物1,英文全称Tuberous Sclerosis Complex 1)是一种抑癌基因,属于TSC基因家族,与TSC2共同形成TSC蛋白复合物。该复合物通过抑制mTOR(哺乳动物雷帕霉素靶蛋白)信号通路调控细胞生长、增殖和代谢。TSC1蛋白(又称错构瘤蛋白Hamartin)与TSC2蛋白(马铃薯蛋白Tuberin)结合后,发挥GAP(GTP酶激活蛋白)功能,将Rheb(Ras同源蛋白脑富集型)从活性GTP形式转化为无活性的GDP形式,从而抑制mTORC1(mTOR复合物1)的激活。TSC1基因突变会导致结节性硬化症(TSC),这是一种常染色体显性遗传病,表现为多器官错构瘤(良性肿瘤)、癫痫、智力障碍和皮肤病变等。突变类型包括无义突变、移码突变或大片段缺失,导致TSC1蛋白功能丧失,mTOR信号通路过度激活,促进细胞异常增殖。TSC1基因过表达会过度抑制mTOR通路,可能影响正常细胞生长;而表达降低则导致mTOR过度活化,与肿瘤发生、代谢紊乱和神经发育异常相关。TSC基因家族的共性是通过调控mTOR通路维持细胞稳态,成员间存在功能互补。除TSC外,TSC1基因异常还与淋巴管平滑肌瘤病(LAM)、自闭症谱系障碍和某些癌症相关。临床使用mTOR抑制剂(如雷帕霉素衍生物)可部分缓解TSC症状。专业术语解释:GTP/GDP(三磷酸鸟苷/二磷酸鸟苷)是调控蛋白活性的能量分子,GAP通过加速GTP水解调控信号传导;错构瘤(Hamartoma)指正常组织异常排列形成的良性肿块;mTOR通路是调控蛋白质合成和细胞生长的核心通路。
This gene encodes a growth inhibitory protein thought to play a role in the stabilization of tuberin. Mutations in this gene have been associated with tuberous sclerosis. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jun 2009]
这个基因编码认为在马铃薯球蛋白的稳定作用生长抑制蛋白。在这种基因突变与结节性硬化症相关联。选择性剪接结果在多个抄本变形。 [由RefSeq的,2009年06月提供]
TSC1基因(以及对应的蛋白质)的细胞分布位置:
TSC1基因的本体(GO)信息:
| 名称 |
|---|
| 4151 PI3K-Akt signaling pathway [PATH:hsa04151] |
| 4152 AMPK signaling pathway [PATH:hsa04152] |
| 4150 mTOR signaling pathway [PATH:hsa04150] |
| 4910 Insulin signaling pathway [PATH:hsa04910] |
| 5231 Choline metabolism in cancer [PATH:hsa05231] |
| 名称 |
|---|
| Energy dependent regulation of mTOR by LKB1-AMPK |
| Gene Expression |
| Generic Transcription Pathway |
| IGF1R signaling cascade |
| Inhibition of TSC complex formation by PKB |
| Insulin receptor signalling cascade |
| IRS-mediated signalling |
| IRS-related events |
| IRS-related events triggered by IGF1R |
| mTOR signalling |
| PI3K Cascade |
| PKB-mediated events |
| Regulation of Rheb GTPase activity by AMPK |
| Signaling by Insulin receptor |
| Signaling by Type 1 Insulin-like Growth Factor 1 Receptor (IGF1R) |
| TP53 Regulates Metabolic Genes |
| Transcriptional Regulation by TP53 |
| 疾病名称 | 关系值 | NofPmids | NofSnps | 来源 |
| Tuberous Sclerosis | 0.465677729 | 247 | 37 | BeFree_CLINVAR_CTD_human_GAD_LHGDN_ORPHANET |
| TUBEROUS SCLEROSIS 1 (disorder) | 0.443181358 | 10 | 31 | BeFree_CLINVAR_CTD_human_GAD_MGD_UNIPROT |
| Lymphangioleiomyomatosis | 0.365700279 | 21 | 2 | BeFree_CLINVAR_CTD_human_ORPHANET |
| FOCAL CORTICAL DYSPLASIA OF TAYLOR | 0.24 | 1 | 0 | CTD_human_ORPHANET |
| Autistic Disorder | 0.203267234 | 4 | 0 | BeFree_CTD_human_LHGDN_MGD |
| Renal Cell Carcinoma | 0.131129117 | 42 | 0 | BeFree_CTD_human |
| Malignant neoplasm of urinary bladder | 0.130043349 | 37 | 2 | BeFree_CLINVAR |
| Liver carcinoma | 0.12868614 | 33 | 0 | BeFree_CTD_human |
| Squamous cell carcinoma | 0.127881746 | 19 | 0 | BeFree_CTD_human_LHGDN |
| West Syndrome | 0.123538676 | 5 | 0 | BeFree_CTD_human_LHGDN |
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