ABCA1 affects placental function via trophoblast and macrophage

Aims To study the potential impact of ABCA1 on the function of the placenta. Main methods Trophoblasts and macrophages were isolated from the placenta with enzymatic digestion; Immunofluorescence assay was used to detect the location of ABCA1 in cells; RT-PCR and Western-blot were used to detect the expression of ABCA1; The cholesterol efflux assays of primary trophoblasts was detected by Amplex Red cholesterol assay kit (Invitrogen);Inflammatory factor secretion from primary macrophages was detected by Elisa. Key findings ABCA1 was mainly located on trophoblast membranes. Decreased ABCA1 expression in trophoblasts reduced the cholesterol efflux of trophoblasts (P<0.01). while increased ABCA1 expression in trophoblasts reduced the cholesterol efflux of trophoblasts (P<0.05). ABCA1 was uniformly expressed on the cell membrane, cytoplasm, and nucleus of macrophages. Decreased ABCA1 expression in macrophages, increased inflammatory factors but reduced IL-10 (P<0.01). While increased ABCA1 expression in macrophages, reduced inflammatory factors but increased IL-10 (P<0.01). Significance ABCA1 may be a potential target for the prevention of gestation diseases.