Zhao Y, Jin L, Wang Y, Kong Y, Wang D. Prolonged exposure to multi-walled carbon nanotubes dysregulates intestinal mir-35 and its direct target MAB-3 in nematode Caenorhabditis elegans.
Sci Rep 2019;
9:12144. [PMID:
31434956 PMCID:
PMC6704117 DOI:
10.1038/s41598-019-48646-8]
[Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Accepted: 08/09/2019] [Indexed: 01/01/2023] Open
Abstract
In nematode Caenorhabditis elegans, some microRNAs (miRNAs) could be dysregulated by multi-walled carbon nanotubes (MWCNTs), suggesting their involvement in regulating the response of nematodes to MWCNTs. Among these dysregulated miRNAs induced by MWCNT exposure, prolonged exposure to MWCNTs increased mir-35 expression. mir-35 further acted in the intestine to regulate the response to MWCNTs. In the intestine, a transcription factor MAB-3 was identified as its target in regulating the response to MWCNTs. Moreover, during the control of response to MWCNTs, MAB-3 acted upstream of DAF-16, a fork head transcriptional factor in insulin signaling pathway. Therefore, MWCNTs exposure potentially dysregulates intestinal mir-35 and its direct target MAB-3, which may activate a protective intestinal response of nematodes against the MWCNTs toxicity.
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