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A B
PI⁃灭活菌 AO⁃细胞核 Merge *
胞内相对细菌荧光强度 1.5
μg/mL 1.0 * *
0 0.5
0.0 0 40 80 120
40 μg/mL Pec1浓度(μg/mL)
80 μg/mL
μg/mL
120
A:荧光显微镜观察吞入胞内的灭活PAO1菌(×400)。PI(红)染灭活的PAO1,AO(绿)染细胞核,白色箭头指示灭活的PAO1;B:MH⁃S细胞
吞噬灭活PAO1菌相对荧光强度定量图。两组比较,P < 0.001(n=3)。
*
图5 Pec1对MH⁃S细胞吞噬灭活铜绿假单胞菌PAO1的影响
Figure 5 Effect of the recombinant protein Pec1 on phagocytosis of heat⁃inactivated Pseudomonas aeruginosa PAO1 by MH
⁃S cells
上述研究结果表明,巨噬细胞可通过促进或抑制自 [4] ZHU F,XIONG F,HE J,et al. Brd4 inhibition amelio⁃
噬,继而影响吞噬功能,最终影响胞内PA的清除。 rates pyocyanin ⁃ mediated macrophage dysfunction via
本研究初步观察到PA分泌的Pec1蛋白能够抑 transcriptional repression of reactive oxygen and nitrogen
free radical pathways[J]. Cell Death Dis,2020,11(6):
制MH⁃S巨噬细胞对灭活PA的吞噬,该分泌蛋白影
459
响吞噬的具体机制,是否对巨噬细胞自噬产生影响
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