Mycobacterial p(1)-type ATPases mediate resistance to zinc poisoning in human macrophages.
Mycobacterial p(1)-type ATPases mediate resistance to zinc poisoning in human macrophages.
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DOI:
10.1016/j.chom.2011.08.006
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发表时间:
2011-09-15
影响因子:
30.3
通讯作者:
Neyrolles O
中科院分区:
文献类型:
--
作者:
Botella H;Peyron P;Levillain F;Poincloux R;Poquet Y;Brandli I;Wang C;Tailleux L;Tilleul S;Charrière GM;Waddell SJ;Foti M;Lugo-Villarino G;Gao Q;Maridonneau-Parini I;Butcher PD;Castagnoli PR;Gicquel B;de Chastellier C;Neyrolles O
Mycobacterium tuberculosis thrives within macrophages by residing in phagosomes and preventing them from maturing and fusing with lysosomes. A parallel transcriptional survey of intracellular mycobacteria and their host macrophages revealed signatures of heavy metal poisoning. In particular, mycobacterial genes encoding heavy metal efflux P-type ATPases CtpC, CtpG, and CtpV, and host cell metallothioneins and zinc exporter ZnT1, were induced during infection. Consistent with this pattern of gene modulation, we observed a burst of free zinc inside macrophages, and intraphagosomal zinc accumulation within a few hours postinfection. Zinc exposure led to rapid CtpC induction, and ctpC deficiency caused zinc retention within the mycobacterial cytoplasm, leading to impaired intracellular growth of the bacilli. Thus, the use of P1-type ATPases represents a M. tuberculosis strategy to neutralize the toxic effects of zinc in macrophages. We propose that heavy metal toxicity and its counteraction might represent yet another chapter in the host-microbe arms race. ► Zinc accumulates in the M. tuberculosis (Mtb) phagosome in macrophages (Mϕ) ► Mtb P1-type ATPases, including CtpC, are induced upon exposure to zinc inside Mϕ ► CtpC enables Mtb resistance to zinc poisoning and intracellular survival in Mϕ ► P1-type zinc efflux ATPase ZntA null E. coli is highly susceptible to Mϕ killing
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影响因子:
2.7
作者:
GOULD, SJ;VRBA, ES
通讯作者:
VRBA, ES
影响因子:
7.8
作者:
Kehl-Fie, Thomas E.;Skaar, Eric P.
通讯作者:
Skaar, Eric P.
影响因子:
1.2
作者:
Chan, Henry;Babayan, Vartan;Saier, Milton H., Jr.
通讯作者:
Saier, Milton H., Jr.
影响因子:
3.2
作者:
Helbig, Kerstin;Grosse, Cornelia;Nies, Dietrich H.
通讯作者:
Nies, Dietrich H.
DOI:
10.1164/ajrccm.164.12.2106093
发表时间:
2001-12-15
影响因子:
24.7
作者:
Edwards, KM;Cynamon, MH;Kernodle, DS
通讯作者:
Kernodle, DS