Obesity alters the lung myeloid cell landscape to enhance breast cancer metastasis through IL5 and GM-CSF.

Obesity alters the lung myeloid cell landscape to enhance breast cancer metastasis through IL5 and GM-CSF.
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DOI:
10.1038/ncb3578
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发表时间:
2017-08
影响因子:
21.3
通讯作者:
Joyce JA
Joyce JA
中科院分区:
生物学1区
文献类型:
--
作者:
Quail DF;Olson OC;Bhardwaj P;Walsh LA;Akkari L;Quick ML;Chen IC;Wendel N;Ben-Chetrit N;Walker J;Holt PR;Dannenberg AJ;Joyce JA

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Obesity is associated with chronic, low-grade inflammation, which can disrupt homeostasis within tissue microenvironments. Given the correlation between obesity and relative risk of death from cancer, we investigated whether obesity-associated inflammation promotes metastatic progression. We demonstrate that obesity causes lung neutrophilia in otherwise normal mice, which is further exacerbated by the presence of a primary tumour. The increase in lung neutrophils translates to increased breast cancer metastasis to this site, in a GM-CSF- and IL5-dependent manner. Importantly, weight loss is sufficient to reverse this effect, and reduce serum levels of GM-CSF and IL5 in both mouse models and humans. Our data indicate that special consideration of the obese patient population is critical for effective management of cancer progression.
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