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Myeloid cell genome-wide screen identifies variants associated with Mycobacterium tuberculosis–induced cytokine transcriptional responses

Abstract:
Immune and clinical outcomes to Mycobacterium tuberculosis (Mtb) infection vary greatly between individuals, yet the underlying genetic and cellular mechanisms driving this heterogeneity remain poorly understood. We performed a cellular genome-wide association study to identify genetic variants associated with Mtb-induced monocyte transcriptional expression of IL1B, IL6, TNF, and IFNB1 via RNA-Seq in a Ugandan cohort. Significantly associated variants were assessed for transferability in an independent Seattle cohort, further validated in vitro, and assessed for clinical phenotype associations. We identified 77 loci suggestively associated with Mtb-induced cytokine expression in monocytes in Uganda. SNPs associated with Mtb-induced TNF were enriched within α-linolenic acid metabolism pathway genes, which was validated in vitro using PLA2 inhibitors. Four loci maintained significant associations in Seattle. We validated a cytokine effect with siRNA knockdown for two of these loci, which mapped to the genes SLIT3 and SLC1A1. Furthermore, exogenous treatment of macrophages with SLIT3 enhanced Mtb intracellular replication. Finally, SLC1A1 and SLIT3 variants were associated with susceptibility to tuberculous meningitis and subsequent survival, respectively, in a Vietnamese cohort. In summary, we identified multiple variants and pathways associated with Mtb-induced cytokine transcriptional responses that were validated in vitro and were associated with clinical tuberculosis susceptibility
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1172/jci179822

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Role:
Author
ORCID:
0000-0003-1481-7065
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Role:
Author
ORCID:
0000-0002-7669-2803
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Role:
Author
ORCID:
0009-0005-6965-2626
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Role:
Author
ORCID:
0000-0002-7385-087X


Publisher:
American Society for Clinical Investigation
Journal:
The Journal of Clinical Investigation More from this journal
Volume:
135
Issue:
14
Publication date:
2025-05-22
DOI:
EISSN:
1558-8238
ISSN:
0021-9738


Language:
English
Keywords:
Pubs id:
2127882
Local pid:
pubs:2127882
Source identifiers:
W4410616524
Deposit date:
2025-12-31
ARK identifier:
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