JACC:EGFR抑制剂是治疗动脉粥样硬化潜在的新靶点

2018-01-19 MedSci MedSci原创

几种表皮生长因子受体(EGFR)抑制剂被成功用于肿瘤的治疗,抑制肿瘤的生长和代谢。然而EGFR也表达于白细胞,其在免疫调节中的角色尚未阐明。本研究的目的旨在评估表达于CD4+ T细胞的EGFR是否有功能,并探究EGFR抑制剂在动脉粥样硬化中的作用及机制。本研究中用的EGFR抑制剂为AG-1478(埃罗替尼),并利用Ldlr-/-Cd4-Cre/Egfrlox/lox小鼠模型在小鼠CD4+ T细胞中

几种表皮生长因子受体(EGFR)抑制剂被成功用于肿瘤的治疗,抑制肿瘤的生长和代谢。然而EGFR也表达于白细胞,其在免疫调节中的角色尚未阐明。

本研究的目的旨在评估表达于CD4+ T细胞的EGFR是否有功能,并探究EGFR抑制剂在动脉粥样硬化中的作用及机制。

本研究中用的EGFR抑制剂为AG-1478(埃罗替尼),并利用Ldlr-/-Cd4-Cre/Egfrlox/lox小鼠模型在小鼠CD4+ T细胞中特异性敲除EGFR。结果发现,小鼠CD4+ T细胞表达EGFR,并且EGFR抑制剂在体外可以抑制T细胞的增殖和Th1/Th2细胞因子的产生。在体内,对Ldlr-/-小鼠应用AG-1478会引起T细胞功能缺失,有防止动脉粥样硬化进展的作用。在小鼠CD4+ T细胞中特异性敲除EGFR可以抑制T细胞的增殖和激活,并减少γ干扰素,白细胞介素-4,和白细胞介素-2的表达。此外,人类血细胞中同样表达EGFR,并且EGFR抑制剂可以减少T细胞的增殖和激活。

研究结果显示,EGFR抑制剂可以减少T细胞的增殖和激活,是治疗动脉粥样硬化的潜在靶点。

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    2018-08-18 jklm09
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    2018-11-23 hbwxf
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    2018-01-21 lsndxfj
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    2018-01-21 liuyiping

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