AIM:To explore the effect of co-host non-coding RNA(ncRNA)MIR503HG/miR-503-5p on the angiogenesis of pterygium.METHODS:MIR503HG/miR-503-5p/fibroblast growth factor 2(FGF2)expression levels in pterygium tissues,control...AIM:To explore the effect of co-host non-coding RNA(ncRNA)MIR503HG/miR-503-5p on the angiogenesis of pterygium.METHODS:MIR503HG/miR-503-5p/fibroblast growth factor 2(FGF2)expression levels in pterygium tissues,control conjunctival tissues,and human pterygium fibroblasts(HPF)were examined by reverse transcription-polymerase chain reaction(qRT-PCR)and immunohistochemical methods.Effects of MIR503HG/miR-503-5p on low molecular weight FGF2(LWM FGF2),migration and angiogenesis of human retinal microvascular endothelial cells(HRMEC)were determined in an HPF and HRMEC co-culture model using Western blots,wound healing assay,Matrigel-based tube formation assay,and Transwell assay.RESULTS:MIR503HG/miR-503-5p/FGF2 pathway was actively increased in pterygium tissue and there was a negative correlation between the expression of the two ncRNAs.FGF2 expression level was positively correlated with MIR503HG and negatively correlated with miR-503-5p.Overexpressed MIR503HG/miR-503-5p did not affect the migration and angiogenesis of HRMECs cultured separately,but significantly affected migration and angiogenesis of HRMEC in HPF and HRMEC co-culture models.Western blotting revealed that MIR503HG/miR-503-5p overexpression significantly increased LMW FGF2 expression in HPF.CONCLUSION:MIR503HG/miR-503-5p inhibits HRMEC migration and angiogenic function by interfering with the interaction between HPF and endothelial cells via reducing LMW FGF2 in HPF.展开更多
测定5-氯-2戊酮和环丙基甲基酮的物化性质:密度、黏度、摩尔体积、热膨胀系数和表面张力。测定5-氯-2-戊酮(1)+环丙基甲基酮(2)二元体系的汽液相平衡(VLE),并应用Aspen Plus V11中Van Laar方程、Wilson方程和NRTL方程对实验数据进行关联...测定5-氯-2戊酮和环丙基甲基酮的物化性质:密度、黏度、摩尔体积、热膨胀系数和表面张力。测定5-氯-2-戊酮(1)+环丙基甲基酮(2)二元体系的汽液相平衡(VLE),并应用Aspen Plus V11中Van Laar方程、Wilson方程和NRTL方程对实验数据进行关联,回归得到二元交互参数。实验结果通过热力学一致性检查。该研究不仅补充了汽液相平衡数据库,也为5-氯-2-戊酮与环丙基甲基酮的分离提供热力学数据。展开更多
基金Supported by the National Natural Science Foundation of China(No.81770898).
文摘AIM:To explore the effect of co-host non-coding RNA(ncRNA)MIR503HG/miR-503-5p on the angiogenesis of pterygium.METHODS:MIR503HG/miR-503-5p/fibroblast growth factor 2(FGF2)expression levels in pterygium tissues,control conjunctival tissues,and human pterygium fibroblasts(HPF)were examined by reverse transcription-polymerase chain reaction(qRT-PCR)and immunohistochemical methods.Effects of MIR503HG/miR-503-5p on low molecular weight FGF2(LWM FGF2),migration and angiogenesis of human retinal microvascular endothelial cells(HRMEC)were determined in an HPF and HRMEC co-culture model using Western blots,wound healing assay,Matrigel-based tube formation assay,and Transwell assay.RESULTS:MIR503HG/miR-503-5p/FGF2 pathway was actively increased in pterygium tissue and there was a negative correlation between the expression of the two ncRNAs.FGF2 expression level was positively correlated with MIR503HG and negatively correlated with miR-503-5p.Overexpressed MIR503HG/miR-503-5p did not affect the migration and angiogenesis of HRMECs cultured separately,but significantly affected migration and angiogenesis of HRMEC in HPF and HRMEC co-culture models.Western blotting revealed that MIR503HG/miR-503-5p overexpression significantly increased LMW FGF2 expression in HPF.CONCLUSION:MIR503HG/miR-503-5p inhibits HRMEC migration and angiogenic function by interfering with the interaction between HPF and endothelial cells via reducing LMW FGF2 in HPF.
文摘测定5-氯-2戊酮和环丙基甲基酮的物化性质:密度、黏度、摩尔体积、热膨胀系数和表面张力。测定5-氯-2-戊酮(1)+环丙基甲基酮(2)二元体系的汽液相平衡(VLE),并应用Aspen Plus V11中Van Laar方程、Wilson方程和NRTL方程对实验数据进行关联,回归得到二元交互参数。实验结果通过热力学一致性检查。该研究不仅补充了汽液相平衡数据库,也为5-氯-2-戊酮与环丙基甲基酮的分离提供热力学数据。