Phenformin Promotes Keratinocyte Differentiation via the Calcineurin/NFAT Pathway.

Phenformin Promotes Keratinocyte Differentiation via the Calcineurin/NFAT Pathway.
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苯乙双胍通过钙调神经磷酸酶/NFAT 途径促进角质形成细胞分化。

DOI:
10.1016/j.jid.2020.05.114
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发表时间:
2021-01
期刊:
The Journal of investigative dermatology
影响因子:
--
通讯作者:
Wu X
Wu X
中科院分区:
其他
文献类型:
--
作者:
Zhou Q;Kim SH;Pérez-Lorenzo R;Liu C;Huang M;Dotto GP;Zheng B;Wu X

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苯福明是一种双胍类药物,以前用于治疗2型糖尿病。我们已经报道了苯福明在各种黑色素瘤模型中的抗肿瘤活性,以增强BRAF-MEK-ERK通路抑制的效果,并抑制髓系来源的抑制细胞。在此,我们证明了在DMBA/TPA两阶段皮肤癌变模型中,苯福明抑制肿瘤生长和促进角质形成细胞分化。此外,苯福明增强了悬浮诱导的小鼠和人角质形成细胞的分化。在机制上,苯乙双胍以AMPK依赖的方式诱导角质形成细胞中NFATc1的核转位。药物或遗传抑制钙调神经磷酸酶/NFAT信号可逆转苯福明对角质形成细胞分化的影响。综上所述,我们的研究揭示了苯福明促进角质形成细胞分化的抗肿瘤活性,这证明了未来的翻译努力将苯福明重新用于治疗皮肤鳞状细胞癌。
Phenformin is a drug in the biguanide class that was previously used to treat type 2 diabetes. We have reported the anti-tumor activities of phenformin to enhance the efficacy of BRAF-MEK-ERK pathway inhibition and to inhibit myeloid-derived suppressor cells in various melanoma models. Here we demonstrate that phenformin suppresses tumor growth and promotes keratinocyte differentiation in the DMBA/TPA two stage skin carcinogenesis mouse model. Moreover, phenformin enhances the suspension-induced differentiation of mouse and human keratinocytes. Mechanistically, phenformin induces the nuclear translocation of NFATc1 in keratinocytes in an AMPK-dependent manner. Pharmacological or genetic inhibition of calcineurin/NFAT signaling reverses the effects of phenformin on keratinocyte differentiation. Taken together, our study reveals an anti-tumor activity of phenformin to promote keratinocyte differentiation that warrants future translational efforts to repurpose phenformin for the treatment of cutaneous squamous cell carcinomas.
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