CEL(羧酸酯脂肪酶)是一种由胰腺分泌的消化酶,属于羧酸酯酶基因家族(CES基因家族)。它的主要功能是水解饮食中的胆固醇酯、甘油三酯和其他脂类,帮助肠道吸收脂肪和脂溶性维生素。CEL在十二指肠和小肠上段发挥作用,其活性依赖于胆汁酸盐的存在。CEL基因位于人类染色体9q34.3,包含11个外显子。该基因的突变可能导致CEL相关疾病,如CEL-MODY(青少年发病的成人型糖尿病的一种罕见亚型),这种突变通常发生在CEL的VNTR(可变数目串联重复)区域,导致蛋白错误折叠和胰腺β细胞功能受损。CEL过表达可能与肥胖和血脂异常相关,因为它增加了脂肪吸收效率;而CEL表达降低可能导致脂肪吸收不良和脂溶性维生素缺乏。CES基因家族的共性包括具有α/β水解酶折叠结构、保守的催化三联体(Ser-His-Glu)以及水解酯键的能力。家族成员参与多种生理过程,包括药物代谢、脂质处理和解毒。CEL与其他CES成员(如CES1和CES2)的区别在于其组织特异性表达和底物偏好。研究还发现CEL可能参与胆固醇代谢调控,并与动脉粥样硬化风险相关。某些CEL多态性可能影响个体对降胆固醇药物的反应。在胰腺炎患者中,CEL分泌可能减少,导致消化不良。由于CEL在脂肪消化中的关键作用,它成为研究代谢紊乱和开发相关治疗药物的潜在靶点。
The protein encoded by this gene is a glycoprotein secreted from the pancreas into the digestive tract and from the lactating mammary gland into human milk. The physiological role of this protein is in cholesterol and lipid-soluble vitamin ester hydrolysis and absorption. This encoded protein promotes large chylomicron production in the intestine. Also its presence in plasma suggests its interactions with cholesterol and oxidized lipoproteins to modulate the progression of atherosclerosis. In pancreatic tumoral cells, this encoded protein is thought to be sequestrated within the Golgi compartment and is probably not secreted. This gene contains a variable number of tandem repeat (VNTR) polymorphism in the coding region that may influence the function of the encoded protein. [provided by RefSeq, Jul 2008]
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CEL基因(以及对应的蛋白质)的细胞分布位置:
CEL基因的本体(GO)信息:
名称 |
---|
100 Steroid biosynthesis [PATH:hsa00100] |
561 Glycerolipid metabolism [PATH:hsa00561] |
4972 Pancreatic secretion [PATH:hsa04972] |
4975 Fat digestion and absorption [PATH:hsa04975] |
名称 |
---|
Digestion of dietary lipid |
Lipid digestion, mobilization, and transport |
Metabolism |
Metabolism of lipids and lipoproteins |
疾病名称 | 关系值 | NofPmids | NofSnps | 来源 |
MATURITY-ONSET DIABETES OF THE YOUNG, TYPE 8, WITH EXOCRINE DYSFUNCTION | 0.241357209 | 5 | 1 | BeFree_CLINVAR_CTD_human |
Pancreatitis, Chronic | 0.120542884 | 2 | 0 | BeFree_CTD_human |
Diabetes Mellitus, Experimental | 0.08 | 1 | 0 | RGD |
Adenomatous Polyposis Coli | 0.005428837 | 20 | 0 | BeFree |
Pancreatitis | 0.005362824 | 1 | 0 | BeFree_GAD_LHGDN |
Amyloid Neuropathies, Familial | 0.003257302 | 12 | 0 | BeFree |
Colorectal Cancer | 0.003257302 | 12 | 0 | BeFree |
Colorectal Carcinoma | 0.002985861 | 11 | 0 | BeFree |
Cholesterol Ester Storage Disease | 0.002985861 | 11 | 0 | BeFree |
Atherosclerosis | 0.002909916 | 3 | 0 | BeFree_GAD |
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