CHRM3(胆碱能受体毒蕈碱3)属于毒蕈碱乙酰胆碱受体家族(M受体家族),该家族包含五种亚型(M1-M5),均为G蛋白偶联受体,通过结合乙酰胆碱介导副交感神经系统的信号传递。CHRM3主要分布于平滑肌(如膀胱、胃肠道、支气管)、外分泌腺(如唾液腺、汗腺)及中枢神经系统,其激活后通过Gq蛋白通路触发磷脂酶C(PLC)介导的细胞内钙释放,导致平滑肌收缩和腺体分泌增加。该基因的突变可能导致膀胱过度活动症(表现为尿频、尿急)、干燥综合征(唾液分泌减少)或支气管收缩(如哮喘加重)。CHRM3过表达会增强平滑肌收缩反应,引发排尿功能障碍或肠易激综合征;而表达降低则可能导致胃肠动力不足或分泌减少。在阿尔茨海默病中,中枢CHRM3表达下降与认知功能减退相关,因其参与记忆相关的胆碱能神经传递。药物方面,CHRM3拮抗剂(如达非那新)用于治疗膀胱过度活动症,但可能引发口干等副作用。该基因家族共性包括:七次跨膜结构、偶联G蛋白(M1/M3/M5为Gq型,M2/M4为Gi型)及调控离子通道/第二信使。
The muscarinic cholinergic receptors belong to a larger family of G protein-coupled receptors. The functional diversity of these receptors is defined by the binding of acetylcholine and includes cellular responses such as adenylate cyclase inhibition, phosphoinositide degeneration, and potassium channel mediation. Muscarinic receptors influence many effects of acetylcholine in the central and peripheral nervous system. The muscarinic cholinergic receptor 3 controls smooth muscle contraction and its stimulation causes secretion of glandular tissue. [provided by RefSeq, Jul 2008]
的毒蕈碱胆碱能受体属于较大家族的G蛋白偶联受体。这些受体的功能的多样性是由结合的乙酰胆碱的限定,并包括细胞应答如腺苷酸环化酶的抑制,磷酸变性,和钾通道的调解。毒蕈碱受体影响在中枢和外周神经系统的乙酰胆碱的许多效果。毒蕈碱胆碱受体3控制平滑肌收缩和刺激引起腺体组织的分泌。 [由RefSeq的,2008年7月提供]
CHRM3基因(以及对应的蛋白质)的细胞分布位置:
CHRM3基因的本体(GO)信息:
名称 |
---|
4020 Calcium signaling pathway [PATH:hsa04020] |
4080 Neuroactive ligand-receptor interaction [PATH:hsa04080] |
4810 Regulation of actin cytoskeleton [PATH:hsa04810] |
4911 Insulin secretion [PATH:hsa04911] |
4970 Salivary secretion [PATH:hsa04970] |
4971 Gastric acid secretion [PATH:hsa04971] |
4972 Pancreatic secretion [PATH:hsa04972] |
4725 Cholinergic synapse [PATH:hsa04725] |
名称 |
---|
Acetylcholine regulates insulin secretion |
Amine ligand-binding receptors |
Class A/1 (Rhodopsin-like receptors) |
G alpha (q) signalling events |
Gastrin-CREB signalling pathway via PKC and MAPK |
GPCR downstream signaling |
GPCR ligand binding |
Integration of energy metabolism |
Metabolism |
Muscarinic acetylcholine receptors |
Regulation of insulin secretion |
Signal Transduction |
Signaling by GPCR |
疾病名称 | 关系值 | NofPmids | NofSnps | 来源 |
Prune Belly Syndrome | 0.36 | 1 | 1 | CLINVAR_CTD_human_ORPHANET |
Urinary Bladder Diseases | 0.120271442 | 1 | 0 | BeFree_CTD_human |
Epilepsy | 0.120271442 | 2 | 1 | BeFree_GWASCAT |
Liver Cirrhosis | 0.12 | 1 | 0 | CTD_human |
Ascites | 0.12 | 1 | 0 | CTD_human |
Cryptorchidism | 0.12 | 1 | 0 | CTD_human |
Urethral obstruction sequence | 0.12 | 0 | 0 | ORPHANET |
Drug-Induced Liver Injury | 0.12 | 1 | 0 | CTD_human |
Visceral Myopathy | 0.08 | 0 | 0 | MGD |
Asthma | 0.010639772 | 6 | 0 | BeFree_GAD_LHGDN |
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