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首页> 外文期刊>Cellular immunology >Comparing thermal stress reduction strategies that influence MDSC accumulation in tumor bearing mice
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Comparing thermal stress reduction strategies that influence MDSC accumulation in tumor bearing mice

机译:比较影响MDSC积累在肿瘤轴承小鼠中的热应力降低策略

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摘要

Myeloid derived suppressor cells (MDSCs) are a diverse collection of immune cells that suppress anti-tumor immune responses. Decreasing MDSCs accumulation in the tumor microenvironment could improve the antitumor immune response and improve immunotherapy. Here, we examine the impact of physiologically relevant thermal treatments on the accumulation of MDSCs in tumors in mice. We found that different temperature-based protocols, including 1) weekly whole-body hyperthermia, 2) housing mice at their thermoneutral temperature (TT, similar to 30 degrees C), and 3) housing mice at a subthermoneutral temperature (ST,similar to 22 degrees C) while providing a localized heat source, each resulted in a reduction in MDSC accumulation and improved tumor growth control compared to control mice housed at ST, which is the standard, mandated housing temperature for laboratory mice. Additionally, we found that low dose beta-adrenergic receptor blocker (propranolol) therapy reduced MDSC accumulation and improved tumor growth control to a similar degree as the models that relieved cold stress. These results show that thermal treatments can decrease MDSC accumulation and tumor growth comparable to propranolol therapy.
机译:髓源性抑制细胞(MDSCs)是抑制抗肿瘤免疫反应的多种免疫细胞集合。减少MDSCs在肿瘤微环境中的积累可以提高肿瘤免疫应答,改善免疫治疗。在这里,我们研究了生理相关热处理对小鼠肿瘤中MDSCs积聚的影响。我们发现不同的基于温度的方案,包括1)每周全身热疗,2)将小鼠置于其热中性温度(TT,类似于30摄氏度)下,以及3)将小鼠置于热中性温度(ST,类似于22摄氏度)下,同时提供局部热源,与对照组小鼠相比,这两种方法都能减少MDSC的积累,并改善肿瘤生长控制。对照组小鼠被安置在ST,这是实验室小鼠的标准规定的居住温度。此外,我们发现低剂量β-肾上腺素能受体阻滞剂(普萘洛尔)治疗减少了MDSC的积聚,并改善了肿瘤生长控制,其程度与缓解冷应激的模型相似。这些结果表明,与普萘洛尔相比,热处理可以减少MDSC的积累和肿瘤的生长。

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