title: End-stage dying glioma cells are engulfed by mouse microglia with a strain-dependent efficacy.
abstract: Microglia phagocytic activity for apoptotic glioma cells is hardly analysed inspite of its relevance to tissue damage prevention. We provide evidence for a phosphatidylserine-independent clearance of mouse glioma cells at an advanced stage of death, suggesting microglia recognition of late apoptotic markers. Dying cells were immediately cleared or stayed for hours in that stage before engulfment occurred. This phagocytic activity was restricted to a microglia subset representing 30 to 70% of the population according to the used strain. Expression of receptors involved in late apoptotic markers recognition therefore seems confined to a subpopulation of microglia and to be strain-dependent.
authors.affiliation: INSERM U701, German Cancer Research Centre, Program Infection and Cancer, INF 242, 69120 Heidelberg, Germany.
authors.forename: Dorothee
authors.initials: D
authors.lastname: Nickles
authors.forename: Anette
authors.initials: A
authors.lastname: Abschuetz
authors.forename: Heiko
authors.initials: H
authors.lastname: Zimmer
authors.forename: Tim
authors.initials: T
authors.lastname: Kees
authors.forename: Renate
authors.initials: R
authors.lastname: Geibig
authors.forename: Eberhard
authors.initials: E
authors.lastname: Spiess
authors.forename: Anne
authors.initials: A
authors.lastname: Régnier-Vigouroux
mesh_terms: D000818:Animals; D017209:Apoptosis / Q000187:drug effects / Q000276:immunology*; D045744:Cell Line, Tumor; D002478:Cells, Cultured; D004195:Disease Models, Animal; D005047:Etoposide / Q000494:pharmacology; D005910:Glioma / Q000188:drug therapy / Q000276:immunology* / Q000473:pathology*; D051379:Mice; D008807:Mice, Inbred BALB C; D008810:Mice, Inbred C57BL; D017628:Microglia / Q000187:drug effects / Q000276:immunology* / Q000473:pathology*; D018715:Microscopy, Video; D010587:Phagocytosis / Q000187:drug effects / Q000276:immunology*; D013045:Species Specificity; D013997:Time Factors
chemical_list: D005047:Etoposide