BACKGROUND Phospholipase A2(PLA2)enzymes are pivotal in various biological processes,such as lipid mediator production,membrane remodeling,bioenergetics,and maintaining the body surface barrier.Notably,these enzymes p...BACKGROUND Phospholipase A2(PLA2)enzymes are pivotal in various biological processes,such as lipid mediator production,membrane remodeling,bioenergetics,and maintaining the body surface barrier.Notably,these enzymes play a significant role in the development of diverse tumors.AIM To systematically and comprehensively explore the expression of the PLA2 family genes and their potential implications in cholangiocarcinoma(CCA).METHODS We conducted an analysis of five CCA datasets from The Cancer Genome Atlas and the Gene Expression Omnibus.The study identified differentially expressed genes between tumor tissues and adjacent normal tissues,with a focus on PLA2G2A and PLA2G12B.Gene Set Enrichment Analysis was utilized to pinpoint associated pathways.Moreover,relevant hub genes and microRNAs for PLA2G2A and PLA2G12B were predicted,and their correlation with the prognosis of CCA was evaluated.RESULTS PLA2G2A and PLA2G12B were discerned as differentially expressed in CCA,manifesting significant variations in expression levels in urine and serum between CCA patients and healthy individuals.Elevated expression of PLA2G2A was correlated with poorer overall survival in CCA patients.Additionally,the study delineated pathways and miRNAs associated with these genes.CONCLUSION Our findings suggest that PLA2G2A and PLA2G12B may serve as novel potential diagnostic and prognostic markers for CCA.The increased levels of these genes in biological fluids could be employed as non-invasive markers for CCA,and their expression levels are indicative of prognosis,underscoring their potential utility in clinical settings.展开更多
目的观察大鼠角膜、晶状体、视网膜中热休克蛋白A12B(heat shock protein A12B,HSPA12B)的表达。方法取SPF级SD大鼠9只,用水合氯醛处死后立即摘取眼球,采用Western blot和RT-PCR分别检测大鼠角膜、晶状体和视网膜组织中HSPA12B蛋白和mRN...目的观察大鼠角膜、晶状体、视网膜中热休克蛋白A12B(heat shock protein A12B,HSPA12B)的表达。方法取SPF级SD大鼠9只,用水合氯醛处死后立即摘取眼球,采用Western blot和RT-PCR分别检测大鼠角膜、晶状体和视网膜组织中HSPA12B蛋白和mRNA的表达情况;免疫荧光化学法观察HSPA12B在角膜、晶状体和视网膜组织中的表达及定位。结果Western blot和RT-PCR检测结果显示:HSPA12B在大鼠角膜、晶状体、视网膜均有少量表达,其中角膜组织(0.280±0.034、0.374±0.031)中表达强度相对最低,晶状体(0.331±0.036、0.453±0.040)次之,视网膜组织(0.453±0.029、0.680±0.045)中表达强度最高。免疫荧光化学法结果表明,在角膜组织中HSPA12B主要表达于上皮层,其中基底细胞染色最强,而角膜基质细胞上仅有弱表达;在晶状体组织中HSPA12B主要表达于上皮细胞和皮质;在视网膜组织中HSPA12B主要表达于视网膜神经纤维层、神经节细胞层和内核层,并与NeuN标记的神经元及GS标记的Müller细胞存在共定位。结论HSPA12B在大鼠角膜、晶状体、视网膜组织中均有表达,且呈特异性表达。展开更多
基金Supported by the Key Specialty Construction Project of Shanghai Pudong New Area Health Commission,No.PWZzk2022-17Shanghai East Hospital Clinical Research Project,No.DFLC2022019and the Featured Clinical Discipline Project of Shanghai Pudong District,No.PWYts2021-06.
文摘BACKGROUND Phospholipase A2(PLA2)enzymes are pivotal in various biological processes,such as lipid mediator production,membrane remodeling,bioenergetics,and maintaining the body surface barrier.Notably,these enzymes play a significant role in the development of diverse tumors.AIM To systematically and comprehensively explore the expression of the PLA2 family genes and their potential implications in cholangiocarcinoma(CCA).METHODS We conducted an analysis of five CCA datasets from The Cancer Genome Atlas and the Gene Expression Omnibus.The study identified differentially expressed genes between tumor tissues and adjacent normal tissues,with a focus on PLA2G2A and PLA2G12B.Gene Set Enrichment Analysis was utilized to pinpoint associated pathways.Moreover,relevant hub genes and microRNAs for PLA2G2A and PLA2G12B were predicted,and their correlation with the prognosis of CCA was evaluated.RESULTS PLA2G2A and PLA2G12B were discerned as differentially expressed in CCA,manifesting significant variations in expression levels in urine and serum between CCA patients and healthy individuals.Elevated expression of PLA2G2A was correlated with poorer overall survival in CCA patients.Additionally,the study delineated pathways and miRNAs associated with these genes.CONCLUSION Our findings suggest that PLA2G2A and PLA2G12B may serve as novel potential diagnostic and prognostic markers for CCA.The increased levels of these genes in biological fluids could be employed as non-invasive markers for CCA,and their expression levels are indicative of prognosis,underscoring their potential utility in clinical settings.
