Lower temperatures reduce type I interferon activity and promote alphaviral arthritis
Date
2017
Authors
Prow, N.A.
Tang, B.
Gardner, J.
Le, T.T.
Taylor, A.
Poo, Y.S.
Nakayama, E.
Hirata, T.D.C.
Nakaya, H.I.
Slonchak, A.
Editors
Kuhn, R.J.
Advisors
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Journal article
Citation
PLoS Pathogens, 2017; 13(12, article number e1006788):1-25
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Abstract
Chikungunya virus (CHIKV) belongs to a group of mosquito-borne alphaviruses associated with acute and chronic arthropathy, with peripheral and limb joints most commonly affected. Using a mouse model of CHIKV infection and arthritic disease, we show that CHIKV replication and the ensuing foot arthropathy were dramatically reduced when mice were housed at 30°C, rather than the conventional 22°C. The effect was not associated with a detectable fever, but was dependent on type I interferon responses. Bioinformatics analyses of RNA-Seq data after injection of poly(I:C)/jetPEI suggested the unfolded protein response and certain type I interferon responses are promoted when feet are slightly warmer. The ambient temperature thus appears able profoundly to effect anti-viral activity in the periphery, with clear consequences for alphaviral replication and the ensuing arthropathy. These observations may provide an explanation for why alphaviral arthropathies are largely restricted to joints of the limbs and the extremities.
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Data source: Transcriptome or gene expression data, https://www.ncbi.nlm.nih.gov/bioproject/?term=PRJNA421858
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Copyright 2017 The Authors. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited (http://creativecommons.org/licenses/by/4.0/)