IL15RA(白细胞介素15受体α亚基)是白细胞介素15(IL-15)的高亲和力受体,属于I型细胞因子受体家族。IL15RA与IL2RB(β亚基)和IL2RG(γ亚基)共同组成IL-15受体复合物,介导IL-15的信号传导。IL-15是一种重要的免疫调节细胞因子,主要促进自然杀伤(NK)细胞和记忆性CD8+ T细胞的存活、增殖和功能。IL15RA在细胞膜上表达,通过与IL-15结合形成复合物,再招募IL2RB和IL2RG,激活JAK-STAT、PI3K-AKT和MAPK等信号通路,调控免疫细胞的发育和功能。IL15RA基因突变可能导致受体功能异常,影响IL-15信号传导,进而损害NK细胞和T细胞的免疫功能,增加感染风险和自身免疫疾病的发生概率。IL15RA过表达可能增强IL-15信号,导致免疫细胞过度活化,与某些自身免疫性疾病(如类风湿性关节炎)和淋巴增殖性疾病相关。相反,IL15RA表达降低可能削弱IL-15信号,导致免疫缺陷,影响NK细胞和记忆T细胞的维持。IL15RA属于I型细胞因子受体家族,该家族成员通常具有保守的细胞外结构域,包含细胞因子结合模块,并通过与共享信号亚基(如IL2RG)合作传递信号。IL15RA在免疫治疗中具有潜在应用价值,例如通过调节IL-15信号来增强抗肿瘤免疫或抑制过度免疫反应。
This gene encodes a cytokine receptor that specifically binds interleukin 15 (IL15) with high affinity. The receptors of IL15 and IL2 share two subunits, IL2R beta and IL2R gamma. This forms the basis of many overlapping biological activities of IL15 and IL2. The protein encoded by this gene is structurally related to IL2R alpha, an additional IL2-specific alpha subunit necessary for high affinity IL2 binding. Unlike IL2RA, IL15RA is capable of binding IL15 with high affinity independent of other subunits, which suggests distinct roles between IL15 and IL2. This receptor is reported to enhance cell proliferation and expression of apoptosis inhibitor BCL2L1/BCL2-XL and BCL2. Multiple alternatively spliced transcript variants of this gene have been reported.[provided by RefSeq, Apr 2010]
该基因编码特异性地以高亲和力结合白介素15(IL-15)细胞因子受体。 IL15和IL2的受体共享两个亚基,IL2Rβ和伽玛IL2R。这形成的IL15和IL2的许多重叠生物活动的基础。由该基因编码的蛋白质在结构上与IL2Rα,必需的高亲和力IL2结合一个附加的特定的IL2-α亚基。不像IL2RA,IL15RA能够以高亲和力独立于其他亚基,这表明IL15和IL2之间不同的作用结合IL15。这种受体报道,增强细胞增殖和凋亡的抑制剂BCL2L1 / BCL2-XL和BCL2的表达。据报道这种基因的多选择性剪接转录变异体。[由RefSeq的,2010年4月提供]
IL15RA基因(以及对应的蛋白质)的细胞分布位置:
IL15RA基因的本体(GO)信息:
| 名称 |
|---|
| 4630 Jak-STAT signaling pathway [PATH:hsa04630] |
| 4060 Cytokine-cytokine receptor interaction [PATH:hsa04060] |
| 4672 Intestinal immune network for IgA production [PATH:hsa04672] |
| 5166 HTLV-I infection [PATH:hsa05166] |
| 疾病名称 | 关系值 | NofPmids | NofSnps | 来源 |
| Malignant neoplasm of lung | 0.004734064 | 2 | 0 | GAD |
| Obesity | 0.002909916 | 2 | 0 | BeFree_GAD |
| B-Cell Lymphomas | 0.00272435 | 1 | 0 | LHGDN |
| Hematologic Neoplasms | 0.002367032 | 1 | 0 | GAD |
| Graft-vs-Host Disease | 0.002367032 | 1 | 0 | GAD |
| Bronchiolitis, Viral | 0.002367032 | 1 | 0 | GAD |
| Respiratory Syncytial Virus Infections | 0.002367032 | 1 | 0 | GAD |
| Metabolic Syndrome X | 0.002367032 | 1 | 0 | GAD |
| Malignant neoplasm of urinary bladder | 0.002367032 | 1 | 0 | GAD |
| Inflammation | 0.002367032 | 1 | 1 | GAD |
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