Developmental toxicity of 2-bromoacetamide on peri- and early post-implantation mouse embryos in vitro

Autor: Chuanxin Zhang, Xueqi Dong, Xiaoyu Yin, Xinyi Yuan, Jiawei Wang, Jinzhu Song, Zhenzhen Hou, Cheng Li, Keliang Wu
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Ecotoxicology and Environmental Safety, Vol 252, Iss , Pp 114612- (2023)
Druh dokumentu: article
ISSN: 0147-6513
DOI: 10.1016/j.ecoenv.2023.114612
Popis: 2-bromoacetamide (BAcAm), a new class of disinfection by-products (DBPs), is widely detected in drinking water across the world. Reports of the high cytogenetic toxicity of BAcAm have aroused public attention concerning its toxic effects on early embryonic development. In this study, we optimized an in vitro culture (IVC) system for peri- and early post-implantation mouse embryos and used this system to determine the developmental toxicity of BAcAm. We found that exposure to BAcAm caused a reduction in egg cylinder formation rate and abnormal lineage differentiation in a dose-dependent manner. Transcriptomic analysis further revealed that BAcAm exposure at early developmental stages altered the abundance of transcripts related to a variety of biological processes including gene expression, metabolism, cell proliferation, cell death and embryonic development, thus indicating its toxic effects on embryonic development. Thus, we developed a robust tool for studying the toxicology of chemicals at the early stages of embryonic development and demonstrated the developmental toxicity of BAcAm in the early embryonic development of mammals.
Databáze: Directory of Open Access Journals