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Antibody mediated targeting of the FGFR1c isoform increases glucose uptake in white and brown adipose tissue in male mice

Lewis, Jo E.; Samms, Ricardo J.; Cooper, Scott; Luckett, Jeni C.; Perkins, Alan C.; Dunbar, James D.; Smith, Dennis P.; Emmerson, Paul J.; Adams, Andrew C.; Ebling, Francis J.P.; Tsintzas, Kostas

Authors

Jo E. Lewis

Ricardo J. Samms

Scott Cooper

Jeni C. Luckett

Alan C. Perkins

James D. Dunbar

Dennis P. Smith

Paul J. Emmerson

Andrew C. Adams

Francis J.P. Ebling fran.ebling@nottingham.ac.uk

Kostas Tsintzas



Abstract

The increased prevalence of obesity and its cardiometabolic implications demonstrates the imperative to identify novel therapeutic targets able to effect meaningful metabolic changes in this population. Antibody-mediated targeting of fibroblast growth factor receptor 1c isoform (FGFR1c) has been shown to ameliorate hyperglycaemia and protect from diet- and genetically-induced obesity in rodents and non-human primates. However, it is currently unknown which tissue(s) contribute to this glucose lowering effect. Thus, to elucidate this effect we treated euglycaemic mice with H7, a monoclonal antibody which selectively targets the FGFR1c isoform, and employed whole body positron emission computed tomography with a glucose tracer (18F-flurodeoxyglucose). Treatment with H7 increased basal glucose uptake in white and brown adipose tissues (WAT and BAT respectively), the brain and liver, but reduced it in the quadricep muscles. Consequentially, blood glucose was significantly reduced in response to treatment. Under insulin-stimulated conditions, the effects of H7 were maintained in WAT, BAT, liver and muscle. Treatment with H7 decreased triglyceride content and increased adipose triglyceride lipase content in white adipose tissue, whilst increasing activation of acetyl coenzyme A carboxylase, suggesting futile cycling of triglycerides, albeit favouring net hydrolysis. We demonstrated, in vitro, this is a direct effect of treatment in adipose tissue as basal cellular respiration and glucose uptake were increased in response to treatment. Taken together, these data suggest that antibody-mediated targeting of FGFR1c exerts its powerful glucose-lowering efficacy primarily due to increased glucose uptake in adipose tissue.

Journal Article Type Article
Publication Date Oct 1, 2017
Journal Endocrinology
Print ISSN 0013-7227
Electronic ISSN 1945-7170
Publisher Oxford University Press (OUP)
Peer Reviewed Peer Reviewed
Volume 158
Issue 10
Pages 3090–3096
APA6 Citation Lewis, J. E., Samms, R. J., Cooper, S., Luckett, J. C., Perkins, A. C., Dunbar, J. D., …Tsintzas, K. (2017). Antibody mediated targeting of the FGFR1c isoform increases glucose uptake in white and brown adipose tissue in male mice. Endocrinology, 158(10), 3090–3096. doi:10.1210/en.2017-00591
DOI https://doi.org/10.1210/en.2017-00591
Publisher URL https://academic.oup.com/endo/article/doi/10.1210/en.2017-00591/4082873/Antibody-mediated-targeting-of-the-FGFR1c-isoform
Copyright Statement Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0
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Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0





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