腹腔巨噬细胞培养上清液对小鼠红系造血调控的研究

本文研究了未刺激和经大肠杆菌内毒素(LPS)刺激的腹腔巨噬细胞培养上清液对小鼠红系造血的调控作用。结果提示:未刺激和经LPS刺激腹腔巨噬细胞培养上清液对早期红系祖细胞(BFU-E)均呈刺激作用,对晚期红系祖细胞(CFU-E)呈双向调控,即低浓度刺激,高浓度抑制。二者比较,LPS刺激腹腔巨噬细胞培养上清液具有更高调控活性。实验还提示,腹腔巨噬细胞培养上清液具有促红细胞生成素(EPO)、BPA(Burst Promoting Activity)样活性

STUDY FOR REGULATION OF MOUSE ERYTHROPOIESIS BY SUPERNATANTS OF CULTURED PERITONEAL MACROPHAGE

The effect of cultured supernatants of non-stimulated and LPS-induced peritoneal macrophages on erythropoiesis in C57BL/6J mice was studied by using the techniques of culture of hemopoietic progenitor cells in vitro. Our results indicate that(l)BFU-E growth is enhanced significantly after addition of either non-stimulated or LPS-induced supernatants of peritoneal macrophages; (2) the supernatants present positive and negative feedback control on CFU-E, growth-low concentration supernatants stimulate CFU-E and high concentration supernatants present inhibition; (3) the LPS-induced supernatants of peritoneal macrophage show stronger activities than non-stimulated supernatants to the proliteration of both BFU-E and CFU-E and(4)the supernatants of the cultured peritoneal macrophage may contain EPO-like, BPA-like stimulating activities, which regulate the proliferation of both BFU-E and CFU-E