晚期氧化蛋白产物对妊娠滋养细胞生物学功能的影响

目的观察晚期氧化蛋白产物（AOPP）对妊娠滋养细胞（HTR8/SVneo）功能的影响。 方法体外培养HTR8/SVneo细胞株，用次氯酸（HClO）氧化鼠白蛋白（MSA）体外制备AOPP-MSA，将HTR8/SVneo滋养细胞与不同浓度（50 μg/ml组、100 μg/ml组或200 μg/ml组）的AOPP-MSA共同培养。四甲基偶氮唑蓝（MTT）比色法检测滋养细胞的增殖能力，以平均吸光度（A）值表示；侵袭小室检测滋养细胞侵袭能力，以穿膜细胞数表示；检测上清液中滋养细胞分泌的β-HCG水平评价滋养细胞分化能力；Hoechest33258染色检测滋养细胞凋亡。采用单因素方差分析比较不同浓度AOPP下，滋养细胞的增殖能力、侵袭能力、细胞分泌β-HCG、细胞凋亡数的差异。 结果与对照组比较，AOPP浓度为50 μg/ml时，对HTR8SVneo滋养细胞增殖、侵袭、分化能力及凋亡影响不明显（P>0.05）；AOPP浓度为100 μg/ml和200 μg/ml时，AOPP明显抑制滋养细胞增殖、侵袭和分化能力，并促进滋养细胞凋亡（P<0.05）。 结论AOPP可以抑制滋养细胞的增殖、侵袭、分化能力及诱导滋养细胞凋亡。降低血浆中AOPP水平可能有利于改善滋养细胞生物学功能。

Modulatory effect of advanced oxidation protein products on biological function of human first trimester trophoblast cells

ObjectiveTo evaluate the effects of advanced oxidation protein products (AOPP) on the biological function of first-trimester trophoblast cell line (HTR8/SVneo). MethodsHTR8/SVneo cells were cultured in vitro. Mouse serum albumin (MAS) was oxidized by hypochloric acid (HClO) to prepare AOPP-MAS in vitro. Based on concentration of AOPP-MAS used, the HTR8/SVneo cells were classified into a 50 μg/mL group, 100 μg/mL group, and 200 μg/ml group. Methyl thiazolyl tetrazolium (MTT) assay was used to assess the cell proliferation, which was showed by the mean absorbance (A) value. Transwell assay was used to measure cell invasion, which was showed by the number of cells passing the filter membrane. β-HCG secretion was used to assess the cell differentiation. The apoptosis of trophoblast cells was detected by Hoechest33258 staining. One-way ANOVA was used to compare the proliferation, invasive ability, β-HCG, and apoptosis of trophoblast cells treated with different concentrations of AOPP. ResultsCompared with the control group, the 50 μg/ml AOPP group had no significant change in the proliferation, invasion, differentiation, or apoptosis of HTR8SVneo cells (P>0.05). However, when AOPP concentration was 100 μg/ml or 200 μg/ml, AOPP significantly inhibited the proliferation, invasion, and differentiation of trophoblast cells, and increased the apoptosis of trophoblast cells (P<0.05). ConclusionAOPP could modulate trophoblast cell proliferation, invasion, and differentiation and induce apoptosis of trophoblast cells. Down-regulation of plasma AOPP levels may help to improve the biological function of trophoblast cells.