【摘要】 目的探讨人早孕绒毛组织中趋化因子CXCL16、CXCL12及其受体CXCR6、CXCR4的基因转录和蛋白表达特征。方法收集早孕绒毛组织并分离滋养细胞,采用半定量RT-PCR方法,检测人早孕绒毛滋养细胞(含绒毛滋养细胞和绒毛外滋养细胞)和人绒毛膜细胞癌细胞系JAR中CXCL16、CXCR6、CXCL12、CXCR4的基因转录水平;采用免疫组化和免疫细胞化学分析方法,检测人早孕绒毛滋养细胞及JAR细胞中CXCL16、CXCR6、CXCL12、CXCR4的蛋白表达。结果人早孕绒毛滋养细胞CXCL16、CXCR6、CXCL12、CXCR4的基因转录水平分别为0·89±0·11、1·12±0·25、0·78±0·10、1·08±0·11;JAR细胞CXCL16、CXCR6、CXCL12、CXCR4的基因转录水平分别为0·90±0·21、1·00±0·30、0·66±0·13、0·90±0·18,两者比较,差异无统计学意义(P>0·05)。CXCL16、CXCR6、CXCL12、CXCR4蛋白在人早孕绒毛滋养细胞和绒毛外滋养细胞中的表达均呈阳性。结论人早孕绒毛滋养细胞同时表达CXCL16、CXCL12、CXCR6、CXCR4,提示母-胎界面存在复杂的趋化因子调控网络,并参与调控滋养细胞自身的生物学行为。更多还原

【Abstract】 Objective To investigate the transcription and protein expressions of chemokines CL16, CL12 and their receptors CR6, CR4 in first-trimester human cytotrophoblast cells and human choriocarcinoma cell line JAR. Methods Transcriptions of CR6, CL16, CR4, CL12 in purified first-trimester human trophoblast cells and JAR line were assessed by semi-quantitative RT-PCR, and protein expressions of CR6, CL16, CR4, CL12 were analyzed in primary cultured villous cytotrophoblasts (VCT), extravillous cytotrophoblasts (EVCT), JAR line and placentas by immunostaining. Results CR6 and CR4 were highly transcribed in primary cultured trophoblast cells with mRNA relative level of 1.12±0.25 and 1.08±0.11 respectively, and their ligands CL16 and CL12 were transcribed moderately with mRNA relative level of 0.89±0.11 and 0.78±0.10 respectively. It was demonstrated that CL16, CL12, CR6 and CR4 were expressed in primary cultured VCT, EVCT, JAR line and placentas by immunostaining. Conclusion The co-expression of CL16/CR6 and CL12/CR4 in trophoblast cells may play a role in the proliferation and differentiation of first-trimester trophoblast cells in a manner of autocrine.更多还原