Multi-Omic blood analysis reveals differences in innate inflammatory sensitivity between species
Gregory, D. J.; Han, F.; Li, P.; Gritsenko, M. A.; Kyle, J.; Riley, F. E.; Chavez, D.; Yotova, V.; Sindeaux, R. H. M.; Hawash, M. B. F.; Xu, F.; Hung, L.-Y.; Hayden, D. L.; Tompkins, R. G.; Lanford, R. E.; Kobzik, L.; Hellman, J.; Jacobs, J. M.; Barreiro, L. B.; Xiao, W.; Warren, S.
Show abstract
Vertebrates differ greatly in responses to pro-inflammatory agonists such as bacterial lipopolysaccharide (LPS), complicating use of animal models to study human sepsis or inflammatory disorders. We compared transcriptomes of resting and LPS-exposed blood from six LPS-sensitive species (rabbit, pig, sheep, cow, chimpanzee, human) and four LPS-resilient species (mice, rats, baboon, rhesus), as well as plasma proteomes and lipidomes. Unexpectedly, at baseline, sensitive species already had enhanced expression of LPS-responsive genes relative to resilient species. After LPS stimulation, maximally different genes in resilient species included genes that detoxify LPS, diminish bacterial growth, discriminate sepsis from SIRS, and play roles in autophagy and apoptosis. The findings reveal the molecular landscape of species differences in inflammation, and may inform better selection of species for pre-clinical models. One-Sentence SummaryFundamental differences are present in blood of humans, mice and other species that differ in sensitivity to inflammation.
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