Bifidobacteria DNA Induces Murine Macrophages Activation in vitro-中国期刊网

摘要 PreviousstudieshaveshownthatoligodeoxynucleotidescontainingunmethylatedCpGmotifswereusedasadjuvantsforimmunoregulationandimmuneresponse.ThisstudywastoexploretheactivationeffectsofBifidobacteriaDNAcontainingunmethylatedCpGmotifs(CpGDNA)onmurinemacrophageJ774A.1cells.ThegenomicDNAofBifidobacteriawasextractedandpurified,andthemethylationdegreeofCpGmotifswastested.Thephagocyticabilityofthemacrophageswasdetectedbyflowcytometry.Thecytokines(IL-1β,IL-6,IL-12p40andTNF-α)levelsintheculturesupernatantsofBifidobacteriaDNAtreatedJ774A.1cellswereassayedbyELISA.Thecontentofnitricoxide(NO)wasdetectedbyGriessreagent.AftertreatedwithBifidobacteriaDNAfor24h,NileRedstainincreasedinJ774A.1macrophage,whichsuggestedthatthelipidmetabolismincreasedinthemacrophages.ThephagocyticabilityandlevelsofNOandcytokinesofIL-1β,IL-6,IL-12p40andTNF-αweresignificantlyhigherthanPBSgroupandCTDNAgroup.TheresultsindicatedthatBifidobacteriaDNAcouldactivatemurinemacrophagesJ774A.1,whichcouldprovidescientificbasisfortheresearchandapplicationofmicroorganismDNApreparation.

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Bifidobacteria DNA Induces Murine Macrophages Activation in vitro

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Bifidobacteria DNA Induces Murine Macrophages Activation in vitro

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