Evidence for Additive and Interaction Effects of Host Genotype and Infection in Malaria
Overview
Authors
Affiliations
The host mechanisms responsible for protection against malaria remain poorly understood, with only a few protective genetic effects mapped in humans. Here, we characterize a host-specific genome-wide signature in whole-blood transcriptomes of Plasmodium falciparum-infected West African children and report a demonstration of genotype-by-infection interactions in vivo. Several associations involve transcripts sensitive to infection and implicate complement system, antigen processing and presentation, and T-cell activation (i.e., SLC39A8, C3AR1, FCGR3B, RAD21, RETN, LRRC25, SLC3A2, and TAPBP), including one association that validated a genome-wide association candidate gene (SCO1), implicating binding variation within a noncoding regulatory element. Gene expression profiles in mice infected with Plasmodium chabaudi revealed and validated similar responses and highlighted specific pathways and genes that are likely important responders in both hosts. These results suggest that host variation and its interplay with infection affect children's ability to cope with infection and suggest a polygenic model mounted at the transcriptional level for susceptibility.
Mostoufi S, Singh N G3 (Bethesda). 2024; 14(9).
PMID: 39129654 PMC: 11373657. DOI: 10.1093/g3journal/jkae171.
Jin Y, Lu X, Liu Y, Su L, Bao C, Guo H Cytotechnology. 2024; 76(4):465-482.
PMID: 38933871 PMC: 11196506. DOI: 10.1007/s10616-024-00629-y.
NLRC5 senses NAD depletion, forming a PANoptosome and driving PANoptosis and inflammation.
Sundaram B, Pandian N, Kim H, Abdelaal H, Mall R, Indari O Cell. 2024; 187(15):4061-4077.e17.
PMID: 38878777 PMC: 11283362. DOI: 10.1016/j.cell.2024.05.034.
Genotype × environment interactions in gene regulation and complex traits.
Boye C, Nirmalan S, Ranjbaran A, Luca F Nat Genet. 2024; 56(6):1057-1068.
PMID: 38858456 PMC: 11492161. DOI: 10.1038/s41588-024-01776-w.
Zhang Y, Xie L, Li J, Qi Y, Shi J Malar J. 2024; 23(1):48.
PMID: 38360586 PMC: 10868002. DOI: 10.1186/s12936-024-04877-3.