PLA2G2D(磷脂酶A2第II组D成员)属于分泌型磷脂酶A2(sPLA2)基因家族,该家族成员编码的酶能够水解磷脂的sn-2位酯键,释放游离脂肪酸(如花生四烯酸)和溶血磷脂,参与炎症反应、脂质代谢和信号传导。PLA2G2D主要在免疫细胞(如巨噬细胞和树突状细胞)中表达,其表达产物通过调节脂质介质(如前列腺素和白三烯)的生成来影响免疫和炎症反应。该酶在肠道免疫稳态中起关键作用,能通过降解细菌膜磷脂抑制某些病原体的生长,同时调节肠道菌群平衡。PLA2G2D的突变可能导致酶活性改变,例如功能丧失突变可能削弱抗微生物能力,增加感染风险,而功能获得突变可能过度激活炎症通路,与自身免疫疾病(如类风湿性关节炎)或过敏性疾病相关。研究表明,PLA2G2D过表达会促进促炎因子释放,加剧炎症性疾病(如动脉粥样硬化),而敲除该基因的小鼠则显示肠道菌群紊乱和免疫应答缺陷。此外,PLA2G2D通过生成脂质信号分子间接影响其他基因(如COX-2和TNF-α)的表达。sPLA2家族共性包括依赖钙离子的催化活性、低分子量分泌蛋白特性及参与宿主防御和病理过程。PLA2G2D的独特之处在于其抗微生物和免疫调节的双重作用,使其成为感染和炎症性疾病的潜在治疗靶点。
This gene encodes a secreted member of the phospholipase A2 family, and is found in a cluster of related family members on chromosome 1. Phospholipase A2 family members hydrolyze the sn-2 fatty acid ester bond of glycerophospholipids to produce lysophospholipids and free fatty acid. This gene may be involved in inflammation and immune response, and in weight loss associated with chronic obstructive pulmonary disease. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Nov 2012]
该基因编码的磷脂酶A2家族的分泌成员,并在1号染色体上相关家族成员的集群被发现磷脂酶A2的家庭成员水解甘油磷脂的sn-2脂肪酸酯键,产生溶血磷脂和游离脂肪酸。该基因可能参与了炎症和免疫反应,以及与慢性阻塞性肺疾病相关的体重减轻。在多个转录剪接变异体导致编码不同亚型。 [通过的RefSeq,2012十一月提供]
PLA2G2D基因(以及对应的蛋白质)的细胞分布位置:
PLA2G2D基因的本体(GO)信息:
| 名称 |
|---|
| 564 Glycerophospholipid metabolism [PATH:hsa00564] |
| 565 Ether lipid metabolism [PATH:hsa00565] |
| 590 Arachidonic acid metabolism [PATH:hsa00590] |
| 591 Linoleic acid metabolism [PATH:hsa00591] |
| 592 alpha-Linolenic acid metabolism [PATH:hsa00592] |
| 4014 Ras signaling pathway [PATH:hsa04014] |
| 4270 Vascular smooth muscle contraction [PATH:hsa04270] |
| 4972 Pancreatic secretion [PATH:hsa04972] |
| 4975 Fat digestion and absorption [PATH:hsa04975] |
| 名称 |
|---|
| Acyl chain remodelling of PC |
| Acyl chain remodelling of PE |
| Acyl chain remodelling of PG |
| Acyl chain remodelling of PI |
| Acyl chain remodelling of PS |
| Glycerophospholipid biosynthesis |
| Metabolism of lipids and lipoproteins |
| Phospholipid metabolism |
| Synthesis of PA |
| 疾病名称 | 关系值 | NofPmids | NofSnps | 来源 |
| Chronic Obstructive Airway Disease | 0.003267234 | 2 | 0 | BeFree_LHGDN |
| HIV Infections | 0.002367032 | 1 | 0 | GAD |
| Weight Loss Adverse Event | 0.002367032 | 1 | 0 | GAD |
| Alzheimer's Disease | 0.002367032 | 1 | 0 | GAD |
| Coronary Arteriosclerosis | 0.000542884 | 2 | 0 | BeFree |
| Coronary heart disease | 0.000542884 | 2 | 0 | BeFree |
| Craniosynostosis | 0.000271442 | 1 | 0 | BeFree |
| Adenocarcinoma | 0.000271442 | 1 | 0 | BeFree |
| Obesity | 0.000271442 | 1 | 0 | BeFree |
| Colon Carcinoma | 0.000271442 | 1 | 0 | BeFree |
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