Behavioral Fever Drives Epigenetic Modulation of the Immune Response in Fish



Boltana S, Aguilar A, Sanhueza N, Donoso A, Mercado L, Imarai M & Mackenzie S (2018) Behavioral Fever Drives Epigenetic Modulation of the Immune Response in Fish. Frontiers in Immunology, 9, Art. No.: 1241.

Ectotherms choose the best thermal conditions to mount a successful immune response, a phenomenon known as behavioral fever. The cumulative evidence suggests that behavioral fever impacts positively upon lymphocyte proliferation, inflammatory cytokine expression, and other immune functions. In this study, we have explored how thermal choice during infection impacts upon underpinning molecular processes and how temperature increase is coupled to the immune response. Our results show that behavioral fever results in a widespread, plastic imprint on gene regulation, and lymphocyte proliferation. We further explored the possible contribution of histone modification and identified global associations between temperature and histone changes that suggest epigenetic remodeling as a result of behavioral fever. Together, these results highlight the critical importance of thermal choice in mobile ectotherms, particularly in response to an infection, and demonstrate the key role of epigenetic modification to orchestrate the thermocoupling of the immune response during behavioral fever.

behavioral fever; gene regulation; lymphocyte proliferation; cytokine release; epigenetic modification

Frontiers in Immunology: Volume 9

Publication date04/06/2018
Publication date online04/06/2018
Date accepted by journal17/05/2018

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Professor Simon MacKenzie

Professor Simon MacKenzie

Professor & Head of Inst of Aquaculture, Institute of Aquaculture