学科分类
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1 个结果
  • 简介:InordertostudyFcαRⅠmediatedphagocytosisotlgAimmunecomplexesbyU937cells,antigen8.9NIP/BSAwaslabeledwithFITCandreactedwithanti-NIPIgAoranti-NIPIgGantibodytoformimmunecomplexes(ICs).Theywerethenincubatedwithphorbol12-myristateB-acetate(PMA)stimulatedU937cells.ThephagocytosedICswerequantifiedbyflowcytometry.TheresultswasthattheexpressionofFcαRⅠonU937cellswashigherthanthatofFcγRⅠ,FcyRⅡandFcγRⅢ.AfterstimulationbyPMA,expressionofFcαRⅠonU937cellswasmarkedlyupregulatedandthephagocytosisofIgAICswasenhanced.FcαRⅠmediatedspecificIgAphagocytosiswasstrongerthanFcγRⅠandFcγRⅡmediatedIgGphagocytosis.Complementreceptors,CR1andCR3,enhancedU937cellphagocytosisofIgAICs.ItconcludesthatFcγRⅠmediatedstrongphagocytosisofIgAICs.

  • 标签: 人类 U937细胞 吞噬作用 IGA 免疫复合物 FCR