Cell-intrinsic lysosomal lipolysis is essential for alternative activation of macrophages.
Cell-intrinsic lysosomal lipolysis is essential for alternative activation of macrophages.
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作者:
Alternative (M2) macrophage activation driven through interleukin 4 receptor α (IL-4Rα) is important for immunity to parasites, wound healing, the prevention of atherosclerosis and metabolic homeostasis. M2 polarization is dependent on fatty acid oxidation (FAO), but the source of fatty acids to support this metabolic program has not been clear. We show that the uptake of triacylglycerol substrates via CD36 and their subsequent lipolysis by lysosomal acid lipase (LAL) was important for the engagement of elevated oxidative phosphorylation (OXPHOS), enhanced spare respiratory capacity (SRC), prolonged survival and expression of genes that together define M2 activation. Inhibition of lipolysis suppressed M2 activation during infection with a parasitic helminth, and blocked protective responses against this pathogen. Our findings delineate a critical role for cell-intrinsic lysosomal lipolysis in M2 activation.
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影响因子:
32.4
作者:
O'Sullivan, David;van der Windt, Gerritje J. W.;Huang, Stanley Ching-Cheng;Curtis, Jonathan D.;Chang, Chih-Hao;Buck, Michael D.;Qiu, Jing;Smith, Amber M.;Lam, Wing Y.;DiPlato, Lisa M.;Hsu, Fong-Fu;Birnbaum, Morris J.;Pearce, Edward J.;Pearce, Erika L.
通讯作者:
Pearce, Erika L.
影响因子:
4.4
作者:
Martinez, Fernando O.;Gordon, Siamon;Mantovani, Alberto
通讯作者:
Mantovani, Alberto
DOI:
10.3791/2511
发表时间:
2010-12-06
期刊:
Journal of visualized experiments : JoVE
影响因子:
--
作者:
Nicholls, David G;Darley-Usmar, Victor M;Ferrick, David A
通讯作者:
Ferrick, David A
DOI:
10.1146/annurev-pathol-011110-130138
发表时间:
2011
期刊:
Annual review of pathology
影响因子:
--
作者:
Odegaard JI;Chawla A
通讯作者:
Chawla A
影响因子:
20.1
作者:
Chawla A
通讯作者:
Chawla A