PORCN(Porcupine O-Acyltransferase)是一种位于内质网的膜结合蛋白,属于膜结合O-酰基转移酶(MBOAT)基因家族成员。该基因编码的蛋白质在Wnt信号通路中起关键作用,负责对Wnt蛋白进行棕榈酰化修饰,这一修饰是Wnt蛋白分泌和活化的必要条件。Wnt信号通路在胚胎发育、组织稳态和干细胞维持中具有重要作用。PORCN的功能障碍会导致Wnt蛋白分泌受阻,进而影响下游信号传导。PORCN突变与多种发育异常相关,最典型的是局灶性皮肤发育不全(Goltz综合征),这是一种X连锁显性遗传病,表现为皮肤、骨骼和眼睛等多系统发育缺陷。由于PORCN位于X染色体(Xp11.23),女性患者因X染色体随机失活表现为镶嵌型症状,而男性半合子突变通常致死。PORCN过表达可能增强Wnt信号活性,与某些癌症如结直肠癌的发生发展相关,而表达降低则可能导致Wnt信号减弱,影响组织再生和干细胞功能。MBOAT家族成员多参与脂质修饰,如酰化反应,在膜蛋白功能和信号转导中发挥重要作用。研究PORCN不仅有助于理解Wnt信号调控机制,也为相关发育障碍和癌症治疗提供潜在靶点。
This gene belongs to the evolutionarily conserved porcupine (Porc) gene family. Genes of the porcupine family encode endoplasmic reticulum proteins with multiple transmembrane domains. Porcupine proteins are involved in the processing of Wnt (wingless and int homologue) proteins. Disruption of this gene is associated with focal dermal hypoplasia, and the encoded protein has been implicated in cancer. Multiple alternatively spliced transcript variants encoding distinct isoforms have been observed. [provided by RefSeq, Aug 2013]
该基因属于进化上保守的豪猪(PORC)基因家族。有多个跨膜结构域豪猪家族编码内质网的蛋白质的基因。豪猪蛋白参与Wnt信号(无翅和INT同源)的蛋白质的处理。这个基因的破坏是局灶性真皮发育不全相关联,并且所编码的蛋白质已经在癌症牵连。编码不同同种型的多个可变剪接转录物变体已观察到。 [由RefSeq的,2013年8月提供]
PORCN基因(以及对应的蛋白质)的细胞分布位置:
PORCN基因的本体(GO)信息:
名称 |
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4310 Wnt signaling pathway [PATH:hsa04310] |
名称 |
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Disease |
Diseases of signal transduction |
Signaling by Wnt |
Signaling by WNT in cancer |
WNT ligand biogenesis and trafficking |
WNT ligand secretion is abrogated by the PORCN inhibitor LGK974 |
疾病名称 | 关系值 | NofPmids | NofSnps | 来源 |
Focal Dermal Hypoplasia | 0.574144772 | 24 | 5 | BeFree_CLINVAR_CTD_human_LHGDN_MGD_ORPHANET_UNIPROT |
Lung Neoplasms | 0.00272435 | 1 | 0 | LHGDN |
Antley-Bixler Syndrome, Autosomal Dominant | 0.001085767 | 4 | 0 | BeFree |
Congenital adrenal hyperplasia | 0.000814326 | 3 | 0 | BeFree |
Antley-Bixler Syndrome with Disordered Steroidogenesis | 0.000542884 | 2 | 0 | BeFree |
Ambiguous Genitalia | 0.000542884 | 2 | 0 | BeFree |
Chronic active hepatitis | 0.000542884 | 2 | 0 | BeFree |
Pentalogy of Cantrell | 0.000542884 | 2 | 0 | BeFree |
Craniosynostosis | 0.000542884 | 2 | 0 | BeFree |
Microphthalmos | 0.000271442 | 1 | 0 | BeFree |
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