CDMCs在形态和功能上相似,但与小胶质细胞不同。(A)未移植小鼠(−)、BMT + P后小鼠(移植后12周)和BMT + P后小鼠(移植后24周)皮层中Iba-1+细胞的代表性图像。底部面板是顶部面板中被框住区域的放大图像。比例尺:50 μm(上)和25 μm(下)。(B)指示样品中Iba-1+的定量、形态学分析。左:进程的总长度。中间:分支点的个数。右图:细胞密度(横柱为中位数,每组n = 3,每只动物3片脑切片量化;*** p < 0.001,方差分析)。(C)脑髓细胞体外吞噬实验示意图概述。采用流式细胞术分析ph敏感荧光珠的吞噬作用。 (D) Mean fluorescence intensity (MFI) of pH-sensitive fluorescent beads in the indicated samples 1 and 4 hours of incubation (mean ± SEM, n = 8; *P < 0.05 and ***P < 0.001, ANOVA). (E) Microglia (CX3CR1-GFP+/−) and CDMCs (CX3CR1-GFP+/➔WT) were visualized in vivo by two-photon microscopy. Individual frames from 30-min time-lapse imaging of microglia (top) and CDMCs (bottom). Representative images are shown. Arrowheads indicate extension and retraction of processes. Scale bars, 25 μm. (F) Changes in process length were analyzed in eight cells per group (total of 12 processes per group). Images were taken every 1 min for 30 min. (G) Motility of processes in microglia and CDMCs (horizontal bars represent median values, n = 12 processes per group; *P < 0.05, Student’s t test). Credit:科学转化医学(2022)。DOI: 10.1126 / scitranslmed.abl9945