PYCARD(也称为ASC,Apoptosis-associated speck-like protein containing a CARD)是一个重要的基因,编码一种含有CARD(caspase recruitment domain,半胱天冬酶募集结构域)的蛋白质,主要参与炎症反应和细胞凋亡(程序性细胞死亡)的调控。PYCARD蛋白通过其CARD结构域与其他含有CARD的蛋白质相互作用,如NLRP3(NOD-like receptor family pyrin domain containing 3)和caspase-1(半胱天冬酶-1),形成炎症小体(inflammasome),进而激活caspase-1,促进炎症细胞因子IL-1β和IL-18的成熟与释放。PYCARD的主要作用位点包括细胞质和炎症小体复合物,其功能异常可能导致炎症反应失调。PYCARD基因突变或表达异常与多种自身炎症性疾病和自身免疫性疾病相关,如家族性地中海热(FMF)、冷吡啉相关周期性综合征(CAPS)和类风湿性关节炎(RA)。PYCARD过表达可能导致炎症反应过度激活,引发慢性炎症或自身免疫疾病;而降低表达则可能削弱机体对病原体的免疫应答,增加感染风险。PYCARD属于CARD蛋白家族,该家族成员通常含有CARD结构域,参与细胞凋亡、炎症和免疫反应的调控。基因家族的共性是通过CARD结构域介导蛋白质-蛋白质相互作用,调控下游信号通路。PYCARD的功能研究为理解炎症性疾病的发病机制和开发靶向治疗策略提供了重要线索。
This gene encodes an adaptor protein that is composed of two protein-protein interaction domains: a N-terminal PYRIN-PAAD-DAPIN domain (PYD) and a C-terminal caspase-recruitment domain (CARD). The PYD and CARD domains are members of the six-helix bundle death domain-fold superfamily that mediates assembly of large signaling complexes in the inflammatory and apoptotic signaling pathways via the activation of caspase. In normal cells, this protein is localized to the cytoplasm; however, in cells undergoing apoptosis, it forms ball-like aggregates near the nuclear periphery. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]
此基因编码由两个蛋白质 - 蛋白质相互作用结构域的接头蛋白:N-末端PYRIN-PAAD-大坪域(PYD)和一个C-末端的caspase-募集结构域(CARD)。的PYD和CARD域是通过激活caspase介导的在炎症和凋亡信号传导途径大信号复合组件的六螺旋束死亡域倍超家族的成员。在正常细胞中,该蛋白质定位于细胞质;然而,在经历凋亡的细胞中,它形成靠近核周球状聚集体。已发现该基因编码不同亚型的两个转录变异体。 [由RefSeq的,2008年7月提供]
PYCARD基因(以及对应的蛋白质)的细胞分布位置:
PYCARD基因的本体(GO)信息:
名称 |
---|
4621 NOD-like receptor signaling pathway [PATH:hsa04621] |
4623 Cytosolic DNA-sensing pathway [PATH:hsa04623] |
5132 Salmonella infection [PATH:hsa05132] |
5133 Pertussis [PATH:hsa05133] |
5134 Legionellosis [PATH:hsa05134] |
5164 Influenza A [PATH:hsa05164] |
名称 |
---|
C-type lectin receptors (CLRs) |
CLEC7A (Dectin-1) signaling |
CLEC7A/inflammasome pathway |
Immune System |
Inflammasomes |
Innate Immune System |
Nucleotide-binding domain, leucine rich repeat containing receptor (NLR) signaling pathways |
The AIM2 inflammasome |
The NLRP3 inflammasome |
疾病名称 | 关系值 | NofPmids | NofSnps | 来源 |
Colorectal Neoplasms | 0.125720142 | 2 | 0 | BeFree_CTD_human_LHGDN |
Stomach Neoplasms | 0.12272435 | 2 | 0 | CTD_human_LHGDN |
Non-Small Cell Lung Carcinoma | 0.121357209 | 5 | 0 | BeFree_CTD_human |
Adenocarcinoma | 0.121357209 | 5 | 0 | BeFree_CTD_human |
Liver carcinoma | 0.120542884 | 2 | 0 | BeFree_CTD_human |
Carcinoma, Large Cell | 0.120271442 | 1 | 0 | BeFree_CTD_human |
Squamous cell carcinoma | 0.120271442 | 1 | 0 | BeFree_CTD_human |
Carcinoma, Small Cell | 0.120271442 | 2 | 0 | BeFree_CTD_human |
Albuminuria | 0.12 | 1 | 0 | CTD_human |
Kidney Diseases | 0.12 | 1 | 0 | CTD_human |
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