SDC2(Syndecan-2)是一种跨膜蛋白多糖,属于syndecan基因家族(包含SDC1、SDC2、SDC3和SDC4)。该家族成员均具有相似的分子结构:胞外区带有硫酸乙酰肝素(HSPG)和/或硫酸软骨素(CSG)糖链,可结合多种生长因子(如FGF、VEGF)和细胞外基质蛋白(如纤连蛋白);跨膜区负责锚定;胞内区则通过保守的C1结构域与细胞骨架和信号分子(如ezrin、syntenin)相互作用。SDC2主要在成纤维细胞、内皮细胞和某些上皮细胞中表达,其核心功能包括调控细胞粘附、迁移、增殖和信号转导(如Wnt、Hedgehog通路)。在肿瘤微环境中,SDC2通过结合基质金属蛋白酶(MMPs)影响细胞外基质重塑,其表达异常与结直肠癌、乳腺癌的侵袭转移相关——过表达会促进EMT(上皮-间质转化)和血管生成,而敲低表达则抑制肿瘤细胞扩散。SDC2基因突变可能导致糖基化异常,使其丧失对生长因子的调控能力,与家族性纤维化疾病和某些先天性发育异常有关。该基因还具有双重作用:在神经元中,SDC2参与突触可塑性调控,其缺失会损害学习记忆功能;而在炎症反应中,它通过调节Toll样受体(TLR)信号影响免疫应答。目前针对SDC2的治疗策略包括使用靶向抗体(如indatuximab ravtansine)或糖链修饰抑制剂,用于抑制肿瘤转移。
The protein encoded by this gene is a transmembrane (type I) heparan sulfate proteoglycan and is a member of the syndecan proteoglycan family. The syndecans mediate cell binding, cell signaling, and cytoskeletal organization and syndecan receptors are required for internalization of the HIV-1 tat protein. The syndecan-2 protein functions as an integral membrane protein and participates in cell proliferation, cell migration and cell-matrix interactions via its receptor for extracellular matrix proteins. Altered syndecan-2 expression has been detected in several different tumor types. [provided by RefSeq, Jul 2008]
由该基因编码的蛋白质是一种跨膜(I型)硫酸乙酰肝素蛋白多糖,并且是聚糖蛋白聚糖家族中的一员。所述syndecans介导的细胞结合,细胞信号传导和细胞骨架组织和聚糖受体所需的HIV-1的Tat蛋白的内化。该多配体聚糖-2蛋白作为完整的膜蛋白,并通过其细胞外基质蛋白受体参与细胞增殖,细胞迁移和细胞 - 基质相互作用。改变聚糖-2的表达已经在几个不同的肿瘤类型被检测到。 [由RefSeq的,2008年7月提供]
SDC2基因(以及对应的蛋白质)的细胞分布位置:
SDC2基因的本体(GO)信息:
名称 |
---|
4514 Cell adhesion molecules (CAMs) [PATH:hsa04514] |
5205 Proteoglycans in cancer [PATH:hsa05205] |
5144 Malaria [PATH:hsa05144] |
名称 |
---|
A tetrasaccharide linker sequence is required for GAG synthesis |
Axon guidance |
Chondroitin sulfate/dermatan sulfate metabolism |
Defective B3GAT3 causes JDSSDHD |
Defective B4GALT7 causes EDS, progeroid type |
Defective EXT1 causes exostoses 1, TRPS2 and CHDS |
Defective EXT2 causes exostoses 2 |
Developmental Biology |
Disease |
Diseases associated with glycosaminoglycan metabolism |
Diseases of glycosylation |
EPH-Ephrin signaling |
EPHB-mediated forward signaling |
Extracellular matrix organization |
Glycosaminoglycan metabolism |
Heparan sulfate/heparin (HS-GAG) metabolism |
HS-GAG biosynthesis |
HS-GAG degradation |
Metabolism of carbohydrates |
Non-integrin membrane-ECM interactions |
Retinoid metabolism and transport |
Syndecan interactions |
Visual phototransduction |
疾病名称 | 关系值 | NofPmids | NofSnps | 来源 |
Diabetic Nephropathy | 0.005905708 | 3 | 0 | BeFree_GAD_LHGDN |
Diabetes Mellitus, Non-Insulin-Dependent | 0.005276948 | 2 | 0 | BeFree_GAD |
Kidney Diseases | 0.002995792 | 2 | 0 | BeFree_LHGDN |
Chondrosarcoma | 0.002995792 | 1 | 0 | BeFree_LHGDN |
Myositis Ossificans | 0.00272435 | 1 | 0 | LHGDN |
Colon Carcinoma | 0.002442977 | 9 | 0 | BeFree |
Tobacco Use Disorder | 0.002367032 | 1 | 0 | GAD |
Atherosclerosis | 0.002367032 | 1 | 0 | GAD |
Cleft Lip | 0.002367032 | 1 | 0 | GAD |
Cleft Palate | 0.002367032 | 1 | 0 | GAD |
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