Loss of HIF-1α in macrophages attenuates AhR/ARNT-mediated tumorigenesis in a PAH-driven tumor model.
Loss of HIF-1α in macrophages attenuates AhR/ARNT-mediated tumorigenesis in a PAH-driven tumor model.
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DOI:
10.18632/oncotarget.8297
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发表时间:
2016-05-03
期刊:
影响因子:
--
通讯作者:
Brüne B
中科院分区:
文献类型:
--
作者:
Henke N;Ferreirós N;Geisslinger G;Ding MG;Essler S;Fuhrmann DC;Geis T;Namgaladze D;Dehne N;Brüne B
Activation of hypoxia-inducible factor (HIF) and macrophage infiltration of solid tumors independently promote tumor progression. As little is known how myeloid HIF affects tumor development, we injected the polycyclic aromatic hydrocarbon (PAH) and procarcinogen 3-methylcholanthrene (MCA; 100 μg/100 μl) subcutaneously into myeloid-specific Hif-1α and Hif-2α knockout mice (C57BL/6J) to induce fibrosarcomas (n = 16). Deletion of Hif-1α but not Hif-2α in macrophages diminished tumor outgrowth in the MCA-model. While analysis of the tumor initiation phase showed comparable inflammation after MCA-injection, metabolism of MCA was impaired in the absence of Hif-1α. An ex vivo macrophage/fibroblast coculture recapitulated reduced DNA damage after MCA-stimulation in fibroblasts of cocultures with Hif-1αLysM−/− macrophages compared to wild type macrophages. A loss of myeloid Hif-1α decreased RNA levels of arylhydrocarbon receptor (AhR)/arylhydrocarbon receptor nuclear translocator (ARNT) targets such as Cyp1a1 because of reduced Arnt but unchanged Ahr expression. Cocultures using Hif-1αLysM−/− macrophages stimulated with the carcinogen 7,12-dimethylbenz[a]anthracene (DMBA; 2 μg/ml) also attenuated a DNA damage response in fibroblasts, while the DNA damage-inducing metabolite DMBA-trans-3,4-dihydrodiol remained effective in the absence of Hif-1α. In chemical-induced carcinogenesis, HIF-1α in macrophages maintains ARNT expression to facilitate PAH-biotransformation. This implies a metabolic activation of PAHs in stromal cells, i.e. myeloid-derived cells, to be crucial for tumor initiation.
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DOI:
10.4049/jimmunol.181.8.5646
发表时间:
2008-10-15
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Jennewein C;Kuhn AM;Schmidt MV;Meilladec-Jullig V;von Knethen A;Gonzalez FJ;Brüne B
通讯作者:
Brüne B
DOI:
10.1186/bcr1530
发表时间:
2006
期刊:
Breast cancer research : BCR
影响因子:
--
作者:
Fantozzi A;Christofori G
通讯作者:
Christofori G
影响因子:
--
作者:
Litzenburger UM;Opitz CA;Sahm F;Rauschenbach KJ;Trump S;Winter M;Ott M;Ochs K;Lutz C;Liu X;Anastasov N;Lehmann I;Höfer T;von Deimling A;Wick W;Platten M
通讯作者:
Platten M
影响因子:
5.7
作者:
Miselis, Nathan R.;Wu, Zhijin J.;Kane, Agnes B.
通讯作者:
Kane, Agnes B.
影响因子:
15.9
作者:
Imtiyaz, Hongxia Z.;Williams, Emily P.;Simon, M. Celeste
通讯作者:
Simon, M. Celeste