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Int J Biol Sci ; 18(2): 599-616, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35002512

RESUMO

Lactic acid (LA) metabolism in the tumor microenvironment contributes to the establishment and maintenance of immune tolerance. This pathway is characterized in tumor associated macrophages. However, the role and pathway of LA metabolism at maternal-fetal interface during early pregnancy, especially in decidual macrophage differentiation, are still unclear. Herein, for the first time, we discovered that LA can trigger either M2 or M1 macrophage polarization via oxidative phosphorylation and glycolysis regulation under normoxia or hypoxia, respectively. Also, LA metabolism played a vital role in decidual macrophages-mediated recurrent pregnancy loss (RPL), through HIF-1α/SRC/LDHA pathway. Moreover, blockade of LA intake with AZD3965 (MCT-1 inhibitor) could rescue pregnancy in an abortion-prone mouse model, suggesting a potential therapeutic target in RPL. Collectively, the present study identifies the previously unknown functions of LA metabolism in the differentiation of decidual macrophages in early normal pregnancy and RPL, and provides a potential therapeutic strategy in RPL by manipulating decidual macrophages' functions through LA metabolic pathway.


Assuntos
Aborto Espontâneo/metabolismo , Ácido Láctico/metabolismo , Macrófagos/metabolismo , Gravidez/metabolismo , Trofoblastos/metabolismo , Adulto , Animais , Diferenciação Celular , Modelos Animais de Doenças , Feminino , Humanos , L-Lactato Desidrogenase/metabolismo , Masculino , Troca Materno-Fetal , Camundongos , Camundongos Endogâmicos BALB C , Camundongos Endogâmicos CBA , Camundongos Endogâmicos DBA , Transdução de Sinais , Quinases da Família src/metabolismo
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