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  3. Microcystin-LR prenatal exposure drives preeclampsia-like changes in mice by inhibiting the expression of TGF-β and VEGFA

Microcystin-LR prenatal exposure drives preeclampsia-like changes in mice by inhibiting the expression of TGF-β and VEGFA

  • Food Chem Toxicol. 2023 Nov 18:182:114189. doi: 10.1016/j.fct.2023.114189.
Meihong Guo 1,  Pinru Yan 2,  Mengjiao Zhu 2,  Manhou Choi 2,  Xinrui Li 2,  Jiahao Huang 2,  Jianghao Zou 2,  Jintao Yuan 3,  Weidong Ding 2,  Dongmei Li 2,  Xiaodong Han 2,  Yong Wang 4,  Jiang Wu 5
Affiliations

Affiliations

  • 1 Immunology and Reproduction Biology Laboratory & State Key Laboratory of Analytical Chemistry for Life Science, Medical School, Nanjing University, Nanjing, Jiangsu, 210093, China; Jiangsu Key Laboratory of Molecular Medicine, Nanjing University, Nanjing, Jiangsu, 210093, China. Electronic address: [email protected].
  • 2 Immunology and Reproduction Biology Laboratory & State Key Laboratory of Analytical Chemistry for Life Science, Medical School, Nanjing University, Nanjing, Jiangsu, 210093, China; Jiangsu Key Laboratory of Molecular Medicine, Nanjing University, Nanjing, Jiangsu, 210093, China.
  • 3 The People's Hospital of Danyang, Affiliated Danyang Hospital of Nantong University, Zhenjiang, Jiangsu, 212300, China.
  • 4 Immunology and Reproduction Biology Laboratory & State Key Laboratory of Analytical Chemistry for Life Science, Medical School, Nanjing University, Nanjing, Jiangsu, 210093, China; Jiangsu Key Laboratory of Molecular Medicine, Nanjing University, Nanjing, Jiangsu, 210093, China. Electronic address: [email protected].
  • 5 Immunology and Reproduction Biology Laboratory & State Key Laboratory of Analytical Chemistry for Life Science, Medical School, Nanjing University, Nanjing, Jiangsu, 210093, China; Jiangsu Key Laboratory of Molecular Medicine, Nanjing University, Nanjing, Jiangsu, 210093, China. Electronic address: [email protected].
PMID: 37980977 DOI: 10.1016/j.fct.2023.114189
Abstract

Microcystin-leucine-arginine (MC-LR) is widespread in the water and food, which has suspected to be associated with adverse pregnancy outcomes. In the present study, we aim to assess the interaction between MC-LR exposure and preeclampsia development and elucidate the molecular events involved. After exposure to MC-LR during pregnancy, the mice developed hypertension and proteinuria, the typical symptoms of preeclampsia. This was associated with decreased invasiveness of placental trophoblast and vascular dysplasia caused by MC-LR through down-regulating VEGFA and TGF-β expression via Akt/m-TOR/HIF-1α pathway. In addition, this conclusion has been confirmed in a case-control study. Significantly, the addition of Deferoxamine (DFM), a phosphorylated serine-threonine protein kinases (p-AKT) specific agonist, can antagonize the inhibitory effect of MC-LR on the expression of related proteins, which further ameliorate the migration and invasion ability of HTR-8/Svneo cells. To sum up, our study revealed the pathologic mechanism by which MC-LR lead to preeclampsia and emphasized the importance of pregnancy management.

Keywords

Angiogenesis; HTR-8/Svneo; Invasion; Microcystin-LR; Placenta; Preeclampsia; TGF-β; VEGFA.

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