CYP2D6属于细胞色素P450基因家族,这是一个庞大的酶家族,主要参与药物代谢和内源性物质的生物转化。CYP2D6基因位于人类第22号染色体上,编码的CYP2D6酶主要在肝脏中表达,负责代谢约25%的常用药物,包括抗抑郁药、抗精神病药、β受体阻滞剂和某些止痛药。CYP2D6的活性在不同个体间差异很大,这主要是由于基因多态性导致的。根据代谢能力,人群可分为超快代谢型、正常代谢型、中间代谢型和慢代谢型。CYP2D6基因突变可能引起酶活性改变,例如某些等位基因会导致酶活性完全丧失(如CYP2D6*4),而基因复制则可能导致超快代谢(如CYP2D6*2xN)。这些变异对药物代谢有重要影响,慢代谢型患者可能因药物蓄积而出现副作用,而超快代谢型患者则可能需要更高剂量才能达到治疗效果。CYP2D6还参与某些内源性物质的代谢,如神经递质多巴胺和5-羟色胺的代谢。CYP2D6基因多态性与多种疾病相关,包括帕金森病、某些癌症和精神疾病的风险。当CYP2D6过表达时,可能导致药物代谢过快,降低药效;而表达降低则可能导致药物蓄积和毒性增加。此外,CYP2D6的活性状态还可能影响其他药物代谢酶的表达和活性。细胞色素P450家族的共同特点是都含有血红素辅基,能够催化氧化反应,主要参与异生物质的代谢和内源性物质的生物合成或降解。了解患者的CYP2D6基因型对个体化用药具有重要意义。
This gene encodes a member of the cytochrome P450 superfamily of enzymes. The cytochrome P450 proteins are monooxygenases which catalyze many reactions involved in drug metabolism and synthesis of cholesterol, steroids and other lipids. This protein localizes to the endoplasmic reticulum and is known to metabolize as many as 25% of commonly prescribed drugs. Its substrates include antidepressants, antipsychotics, analgesics and antitussives, beta adrenergic blocking agents, antiarrythmics and antiemetics. The gene is highly polymorphic in the human population; certain alleles result in the poor metabolizer phenotype, characterized by a decreased ability to metabolize the enzyme's substrates. Some individuals with the poor metabolizer phenotype have no functional protein since they carry 2 null alleles whereas in other individuals the gene is absent. This gene can vary in copy number and individuals with the ultrarapid metabolizer phenotype can have 3 or more active copies of the gene. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2014]
该基因编码的酶的细胞色素P450超家族的成员。细胞色素P450蛋白是能催化涉及药物代谢和胆固醇,类固醇和其他脂类的合成许多反应单加氧酶。此蛋白质定位于内质网和已知代谢的常见的处方药多达25%。其底物包括抗抑郁药,抗精神病药,止痛剂和镇咳药,β肾上腺素受体阻断剂,antiarrythmics和止吐剂。该基因是在人类群体高度多态性;某些等位基因导致代谢表型较差,其特点是代谢酶的底物能力下降。与代谢表型可怜有些人没有功能性蛋白,因为他们携带2无效等位基因,而在其他人的基因是不存在的。这个基因可以在拷贝数和个人用超速代谢表型变化可具有该基因的3个或更多活跃的副本。已发现该基因编码不同亚型选择性剪接转录变异体。 [由RefSeq的,2014年7月提供]
CYP2D6基因(以及对应的蛋白质)的细胞分布位置:
CYP2D6基因的本体(GO)信息:
| 名称 |
|---|
| 980 Metabolism of xenobiotics by cytochrome P450 [PATH:hsa00980] |
| 982 Drug metabolism - cytochrome P450 [PATH:hsa00982] |
| 4726 Serotonergic synapse [PATH:hsa04726] |
| 名称 |
|---|
| Biological oxidations |
| CYP2E1 reactions |
| Cytochrome P450 - arranged by substrate type |
| Fatty acids |
| Metabolism |
| Miscellaneous substrates |
| Phase 1 - Functionalization of compounds |
| Xenobiotics |
| 疾病名称 | 关系值 | NofPmids | NofSnps | 来源 |
| Parkinson Disease | 0.160044047 | 24 | 0 | BeFree_CTD_human_GAD |
| Mammary Neoplasms | 0.151843371 | 14 | 0 | CTD_human_GAD_LHGDN |
| Alzheimer's Disease | 0.135916719 | 11 | 0 | BeFree_CTD_human_GAD_LHGDN |
| Basal Ganglia Diseases | 0.134202192 | 7 | 0 | CTD_human_GAD |
| Major Depressive Disorder | 0.126905599 | 11 | 2 | BeFree_GAD_GWASCAT |
| Amphetamine-Related Disorders | 0.124734064 | 2 | 0 | CTD_human_GAD |
| Tonic-Clonic Epilepsy | 0.122367032 | 1 | 0 | CTD_human_GAD |
| Substance-Related Disorders | 0.122367032 | 2 | 0 | CTD_human_GAD |
| Manganese Poisoning | 0.122367032 | 2 | 0 | CTD_human_GAD |
| Bradycardia | 0.122367032 | 2 | 0 | CTD_human_GAD |
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