AI Article Synopsis
- Infinium methylation arrays are largely unavailable for most non-human mammals, and differences in probes complicate cross-species analysis.
- To overcome this, a custom mammalian methylation array was created, measuring up to 36,000 conserved CpGs across various species, with probes designed to handle species-specific mutations.
- This array has advantages such as applicability to all mammals, comprehensive coverage of conserved regions, and enhanced potential for translating biological findings across different species.
Article Abstract
Infinium methylation arrays are not available for the vast majority of non-human mammals. Moreover, even if species-specific arrays were available, probe differences between them would confound cross-species comparisons. To address these challenges, we developed the mammalian methylation array, a single custom array that measures up to 36k CpGs per species that are well conserved across many mammalian species. We designed a set of probes that can tolerate specific cross-species mutations. We annotate the array in over 200 species and report CpG island status and chromatin states in select species. Calibration experiments demonstrate the high fidelity in humans, rats, and mice. The mammalian methylation array has several strengths: it applies to all mammalian species even those that have not yet been sequenced, it provides deep coverage of conserved cytosines facilitating the development of epigenetic biomarkers, and it increases the probability that biological insights gained in one species will translate to others.
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Source |
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8831611 | PMC |
| http://dx.doi.org/10.1038/s41467-022-28355-z | DOI Listing |
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