Abstract:
:How artificial environmental cues are biologically integrated and transgenerationally inherited is still poorly understood. Here, we investigate the mechanisms of inheritance of reproductive outcomes elicited by the model environmental chemical Bisphenol A in C. elegans. We show that Bisphenol A (BPA) exposure causes the derepression of an epigenomically silenced transgene in the germline for 5 generations, regardless of ancestral response. Chromatin immunoprecipitation sequencing (ChIP-seq), histone modification quantitation, and immunofluorescence assays revealed that this effect is associated with a reduction of the repressive marks H3K9me3 and H3K27me3 in whole worms and in germline nuclei in the F3, as well as with reproductive dysfunctions, including germline apoptosis and embryonic lethality. Furthermore, targeting of the Jumonji demethylases JMJD-2 and JMJD-3/UTX-1 restores H3K9me3 and H3K27me3 levels, respectively, and it fully alleviates the BPA-induced transgenerational effects. Together, our results demonstrate the central role of repressive histone modifications in the inheritance of reproductive defects elicited by a common environmental chemical exposure.
journal_name
Cell Repjournal_title
Cell reportsauthors
Camacho J,Truong L,Kurt Z,Chen YW,Morselli M,Gutierrez G,Pellegrini M,Yang X,Allard Pdoi
10.1016/j.celrep.2018.04.078subject
Has Abstractpub_date
2018-05-22 00:00:00pages
2392-2404issue
8issn
2211-1247pii
S2211-1247(18)30637-5journal_volume
23pub_type
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