ACVR1(Activin A Receptor Type 1,激活素A受体1型)是一种编码I型骨形态发生蛋白(BMP)受体的基因,属于TGF-β(转化生长因子-β)超家族受体。它位于染色体2q23-24上,主要参与调控细胞增殖、分化、凋亡以及骨骼和肌肉发育等生物学过程。ACVR1通过与II型受体(如ACVR2A/B)结合形成复合物,在配体(如激活素、BMP等)刺激下激活下游SMAD信号通路(SMAD1/5/8磷酸化),进而调控靶基因表达。该基因的常见突变位点包括R206H、G328E等,这些突变可能导致受体组成性激活(即无需配体即可持续激活信号),与进行性骨化性纤维发育不良(FOP,Fibrodysplasia Ossificans Progressiva)密切相关。FOP患者表现为软组织异常骨化,逐渐丧失关节活动能力。ACVR1也参与血管生成和炎症反应,其过度表达可能加剧纤维化疾病或肿瘤发生(如弥漫性内生性桥脑胶质瘤DIPG),而表达降低可能影响骨骼发育或免疫功能。ACVR1属于BMP/TGF-β受体家族,该家族成员均具有丝氨酸/苏氨酸激酶结构域,通过SMAD或非SMAD通路(如MAPK)传递信号。家族共性包括:依赖配体诱导的受体寡聚化、保守的GS结构域(富含甘氨酸-丝氨酸区域)以及调控胚胎发育和组织稳态。目前针对ACVR1突变的治疗策略包括小分子抑制剂(如Saracatinib)和单克隆抗体,尚处于研究阶段。
Activins are dimeric growth and differentiation factors which belong to the transforming growth factor-beta (TGF-beta) superfamily of structurally related signaling proteins. Activins signal through a heteromeric complex of receptor serine kinases which include at least two type I ( I and IB) and two type II (II and IIB) receptors. These receptors are all transmembrane proteins, composed of a ligand-binding extracellular domain with cysteine-rich region, a transmembrane domain, and a cytoplasmic domain with predicted serine/threonine specificity. Type I receptors are essential for signaling; and type II receptors are required for binding ligands and for expression of type I receptors. Type I and II receptors form a stable complex after ligand binding, resulting in phosphorylation of type I receptors by type II receptors. This gene encodes activin A type I receptor which signals a particular transcriptional response in concert with activin type II receptors. Mutations in this gene are associated with fibrodysplasia ossificans progressive. [provided by RefSeq, Jul 2008]
激活素是属于转化生长因子-β(TGF-β)结构上相关的信号蛋白的超家族二聚生长和分化因子。活化素信号通过受体丝氨酸激酶的异聚复合物,其中包括至少两个I型(I和IB)和两个第二类(Ⅱ和ⅡB)受体。这些受体都是跨膜蛋白,具有富含半胱氨酸的区域,一个跨膜结构域,并与预测的丝氨酸/苏氨酸特异性的胞质域的配体 - 结合细胞外结构域组成。 I型受体为信号传导至关重要;和II型受体所必需的结合配体和I型受体的表达。 I型和II受体形成配位体后稳定的络合物结合,导致I型受体的磷酸化II型受体。该基因编码激活素这标志着在演唱与II型激活受体的特定转录反应I型受体。在这种基因突变与fibrodysplasia骨化渐进相关联。 [由RefSeq的,2008年7月提供]
ACVR1基因(以及对应的蛋白质)的细胞分布位置:
ACVR1基因的本体(GO)信息:
名称 |
---|
4350 TGF-beta signaling pathway [PATH:hsa04350] |
4060 Cytokine-cytokine receptor interaction [PATH:hsa04060] |
4550 Signaling pathways regulating pluripotency of stem cells [PATH:hsa04550] |
疾病名称 | 关系值 | NofPmids | NofSnps | 来源 |
Fibrodysplasia Ossificans Progressiva | 0.45302921 | 49 | 8 | BeFree_CLINVAR_MGD_ORPHANET_UNIPROT |
Myositis Ossificans | 0.12272435 | 1 | 0 | CTD_human_LHGDN |
Astrocytoma | 0.120542884 | 2 | 0 | BeFree_CTD_human |
Glioma | 0.120271442 | 3 | 0 | BeFree_CTD_human |
IGA Glomerulonephritis | 0.12 | 1 | 0 | CTD_human |
Mammary Neoplasms | 0.12 | 1 | 0 | CTD_human |
Acute Lung Injury | 0.12 | 1 | 0 | CTD_human |
Diabetic Nephropathy | 0.08 | 1 | 0 | RGD |
Polycystic Ovary Syndrome | 0.005362824 | 1 | 0 | BeFree_GAD_LHGDN |
Malignant neoplasm of prostate | 0.005005506 | 3 | 0 | BeFree_GAD |
山东省济南市章丘区文博路2号 齐鲁师范学院 genelibs生信实验室
山东省济南市高新区舜华路750号大学科技园北区F座4单元2楼
电话: 0531-88819269
E-mail: product@genelibs.com
关注微信订阅号,实时查看信息,关注医学生物学动态。