Autophagy genes function sequentially to promote apoptotic cell corpse degradation in the engulfing cell.
Autophagy genes function sequentially to promote apoptotic cell corpse degradation in the engulfing cell.
复制标题
自噬基因依次发挥作用,促进吞噬细胞中的凋亡细胞尸体降解
DOI:
10.1083/jcb.201111053
复制
发表时间:
2012-04-02
期刊:
影响因子:
--
通讯作者:
Ou G
中科院分区:
文献类型:
--
作者:
Li W;Zou W;Yang Y;Chai Y;Chen B;Cheng S;Tian D;Wang X;Vale RD;Ou G
Autophagy genes are not only essential for exposing the engulfment signal on apoptotic cells but also function in phagocytes to promote apoptotic cell removal. Apoptotic cell degradation is a fundamental process for organism development, and impaired clearance causes inflammatory or autoimmune disease. Although autophagy genes were reported to be essential for exposing the engulfment signal on apoptotic cells, their roles in phagocytes for apoptotic cell removal are not well understood. In this paper, we develop live-cell imaging techniques to study apoptotic cell clearance in the Caenorhabditis elegans Q neuroblast lineage. We show that the autophagy proteins LGG-1/LC3, ATG-18, and EPG-5 were sequentially recruited to internalized apoptotic Q cells in the phagocyte. In atg-18 or epg-5 mutants, apoptotic Q cells were internalized but not properly degraded; this phenotype was fully rescued by the expression of autophagy genes in the phagocyte. Time-lapse analysis of autophagy mutants revealed that recruitment of the small guanosine triphosphatases RAB-5 and RAB-7 to the phagosome and the formation of phagolysosome were all significantly delayed. Thus, autophagy genes act within the phagocyte to promote apoptotic cell degradation.
登录
查看更多内容
影响因子:
64.5
作者:
Zhang, Yuxia;Yan, Libo;Zhang, Hong
通讯作者:
Zhang, Hong
影响因子:
11.8
作者:
Lu, Qun;Yang, Peiguo;Zhang, Hong
通讯作者:
Zhang, Hong
DOI:
10.1126/science.1196112
发表时间:
2010-10-29
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Ou G;Stuurman N;D'Ambrosio M;Vale RD
通讯作者:
Vale RD
DOI:
10.1083/jcb.201004096
发表时间:
2010-06-28
期刊:
The Journal of cell biology
影响因子:
--
作者:
Elliott MR;Ravichandran KS
通讯作者:
Ravichandran KS
影响因子:
64.5
作者:
Qu, Xueping;Zou, Zhongju;Levine, Beth
通讯作者:
Levine, Beth