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Effect of AAV-mediated overexpression of ATF5 and downstream targets of an integrated stress response in murine skeletal muscle (2021)
Journal Article
Brearley-Sholto, M. C., Loczenski-Brown, D. M., Jones, S., Daniel, Z. C., Ebling, F. J., Parr, T., & Brameld, J. M. (2021). Effect of AAV-mediated overexpression of ATF5 and downstream targets of an integrated stress response in murine skeletal muscle. Scientific Reports, 11(1), 1-13. https://doi.org/10.1038/s41598-021-99432-4

We previously reported that growth promoter-induced skeletal muscle hypertrophy co-ordinately upregulated expression of genes associated with an integrated stress response (ISR), as well as potential ISR regulators. We therefore used Adeno-Associated... Read More about Effect of AAV-mediated overexpression of ATF5 and downstream targets of an integrated stress response in murine skeletal muscle.

Exercise Training in Obese Rats Does Not Induce Browning at Thermoneutrality and Induces a Muscle-Like Signature in Brown Adipose Tissue (2020)
Journal Article
Aldiss, P., Lewis, J. E., Lupini, I., Bloor, I., Chavoshinejad, R., Boocock, D. J., …Symonds, M. E. (2020). Exercise Training in Obese Rats Does Not Induce Browning at Thermoneutrality and Induces a Muscle-Like Signature in Brown Adipose Tissue. Frontiers in Endocrinology, 11, Article 97. https://doi.org/10.3389/fendo.2020.00097

© Copyright © 2020 Aldiss, Lewis, Lupini, Bloor, Chavoshinejad, Boocock, Miles, Ebling, Budge and Symonds. Aim: Exercise training elicits diverse effects on brown (BAT) and white adipose tissue (WAT) physiology in rodents housed below their thermoneu... Read More about Exercise Training in Obese Rats Does Not Induce Browning at Thermoneutrality and Induces a Muscle-Like Signature in Brown Adipose Tissue.

Whole-body and adipose tissue-specific mechanisms underlying the metabolic effects of fibroblast growth factor 21 in the Siberian hamster (2019)
Journal Article
Lewis, J. E., Monnier, C., Marshall, H., Fowler, M., Green, R., Cooper, S., …Tsintzas, K. (2020). Whole-body and adipose tissue-specific mechanisms underlying the metabolic effects of fibroblast growth factor 21 in the Siberian hamster. Molecular Metabolism, 31, 45-54. https://doi.org/10.1016/j.molmet.2019.10.009

Objective Fibroblast growth factor 21 (FGF21) has been shown to rapidly lower body weight in the Siberian hamster, a preclinical model of adiposity. This induced negative energy balance mediated by FGF21 is associated with both lowered caloric intak... Read More about Whole-body and adipose tissue-specific mechanisms underlying the metabolic effects of fibroblast growth factor 21 in the Siberian hamster.

Photoperiodic changes in adiposity increase sensitivity of female Siberian hamsters to systemic VGF derived peptide TLQP-21 (2019)
Journal Article
Lisci, C., Lewis, J. E., Daniel, Z. C., Stevenson, T. J., Monnier, C., Marshall, H. J., …Jethwa, P. H. (2019). Photoperiodic changes in adiposity increase sensitivity of female Siberian hamsters to systemic VGF derived peptide TLQP-21. PLoS ONE, 14(8), Article e0221517. https://doi.org/10.1371/journal.pone.0221517

TLQP-21, a peptide encoded by the highly conserved vgf gene, is expressed in neuroendocrine cells and has been the most prominent VGF-derived peptide studied in relation to control of energy balance. The recent discovery that TLQP-21 is the natural a... Read More about Photoperiodic changes in adiposity increase sensitivity of female Siberian hamsters to systemic VGF derived peptide TLQP-21.

Effect of adeno-associated virus (AAV)-mediated overexpression of PEPCK-M (Pck2) on Clenbuterol-induced muscle growth (2019)
Journal Article
Loczenski-Brown, D. M., Jones, S., Luckett, J., Daniel, Z., Brearley, M. C., Ebling, F. J. P., …Brameld, J. M. (2019). Effect of adeno-associated virus (AAV)-mediated overexpression of PEPCK-M (Pck2) on Clenbuterol-induced muscle growth. PLoS ONE, 14(6), 1-12. https://doi.org/10.1371/journal.pone.0218970

We previously identified PEPCK-M (encoded by the Pck2 gene) to be highly up-regulated in skeletal muscle of pigs treated with Ractopamine, an anabolic beta-adrenergic receptor agonist. To determine whether PEPCK-M had a causative role in modulating t... Read More about Effect of adeno-associated virus (AAV)-mediated overexpression of PEPCK-M (Pck2) on Clenbuterol-induced muscle growth.

Going Back to the Biology of FGF21: New Insights (2019)
Journal Article
Lewis, J. E., Ebling, F. J., Samms, R. J., & Tsintzas, K. (2019). Going Back to the Biology of FGF21: New Insights. Trends in Endocrinology and Metabolism, 30(8), 491-504. https://doi.org/10.1016/j.tem.2019.05.007

© 2019 Elsevier Ltd Fibroblast growth factor 21 (FGF21) is a protein highly synthesized in the liver that exerts paracrine and endocrine control of many aspects of energy homeostasis in multiple tissues. In preclinical models of obesity and type 2 di... Read More about Going Back to the Biology of FGF21: New Insights.

Genome sequencing and transcriptome analyses of the Siberian hamster hypothalamus identify mechanisms for seasonal energy balance (2019)
Journal Article
Bao, R., Onishi, K. G., Tolla, E., Ebling, F. J. P., Lewis, J. E., Anderson, R. L., …Stevenson, T. J. (2019). Genome sequencing and transcriptome analyses of the Siberian hamster hypothalamus identify mechanisms for seasonal energy balance. Proceedings of the National Academy of Sciences, 116(26), 13116-13121. https://doi.org/10.1073/pnas.1902896116

Synthesis of triiodothyronine (T3) in the hypothalamus induces marked seasonal neuromorphology changes across taxa. How species-specific responses to T3 signaling in the CNS drive annual changes in body weight and energy balance remains uncharacteriz... Read More about Genome sequencing and transcriptome analyses of the Siberian hamster hypothalamus identify mechanisms for seasonal energy balance.

Interscapular and Perivascular Brown Adipose Tissue Respond Differently to a Short-Term High-Fat Diet (2019)
Journal Article
Aldiss, P., Lewis, J., Boocock, D., Miles, A., Bloor, I., Ebling, F., …Symonds, M. (2019). Interscapular and Perivascular Brown Adipose Tissue Respond Differently to a Short-Term High-Fat Diet. Nutrients, 11(5), Article 1065. https://doi.org/10.3390/nu11051065

© 2019 by the authors. Licensee MDPI, Basel, Switzerland. Brown adipose tissue (BAT) function may depend on its anatomical location and developmental origin. Interscapular BAT (iBAT) regulates acute macronutrient metabolism, whilst perivascular BAT (... Read More about Interscapular and Perivascular Brown Adipose Tissue Respond Differently to a Short-Term High-Fat Diet.

Effect of sodium 4-phenylbutyrate on clenbuterol-mediated muscle growth (2018)
Journal Article
Brown, D. M., Jones, S., Daniel, Z. C., Brearley, M. C., Lewis, J. E., Ebling, F. J., …Brameld, J. M. (2018). Effect of sodium 4-phenylbutyrate on clenbuterol-mediated muscle growth. PLoS ONE, 13(7), Article e0201481. https://doi.org/10.1371/journal.pone.0201481

Previously, we highlighted induction of an integrated stress response (ISR) gene program in skeletal muscle of pigs treated with a beta-adrenergic agonist. Hence we tested the hypothesis that the ER-stress inhibitor, sodium 4-phenylbutyrate (PBA), wo... Read More about Effect of sodium 4-phenylbutyrate on clenbuterol-mediated muscle growth.

Antibody mediated targeting of the FGFR1c isoform increases glucose uptake in white and brown adipose tissue in male mice (2017)
Journal Article
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. https://doi.org/10.1210/en.2017-00591

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 growt... Read More about Antibody mediated targeting of the FGFR1c isoform increases glucose uptake in white and brown adipose tissue in male mice.

FGF21 is an insulin-dependent postprandial hormone in adult humans (2017)
Journal Article
Samms, R. J., Lewis, J. E., Norton, L., Stephens, F. B., Gaffney, C. J., Butterfield, T., …Tsintzas, K. (in press). FGF21 is an insulin-dependent postprandial hormone in adult humans. Journal of Clinical Endocrinology and Metabolism, https://doi.org/10.1210/jc.2017-01257

Context: Fibroblast growth factor 21 (FGF21) secretion has been shown to respond directly to carbohydrate consumption, with glucose, fructose and sucrose all reported to increase plasma levels of FGF21 in rodents and humans. However, carbohydrate con... Read More about FGF21 is an insulin-dependent postprandial hormone in adult humans.

Abnormal clock gene expression and locomotor activity rhythms in two month-old female APPSwe/PS1dE9 mice (2017)
Journal Article
Oyegbami, O., Collins, H. M., Pardon, M., Ebling, F. J., Heery, D. M., & Moran, P. M. (2017). Abnormal clock gene expression and locomotor activity rhythms in two month-old female APPSwe/PS1dE9 mice. Current Alzheimer Research, 14(8), 850-860. https://doi.org/10.2174/1567205014666170317113159

In addition to cognitive decline, Alzheimer’s disease (AD) is also characterized by agitation and disruptions in activity and sleep. These symptoms typically occur in the evening or at night and have been referred to as ‘sundowning’. These symptoms a... Read More about Abnormal clock gene expression and locomotor activity rhythms in two month-old female APPSwe/PS1dE9 mice.

Correction: Hypothalamic over-expression of VGF in the Siberian hamster increases energy expenditure and reduces body weight gain (PLoS ONE 12:2: (e0172724) DOI: 10.1371/journal.pone.0172724) (2017)
Journal Article
Lewis, J. E., Brameld, J. M., Hill, P., Cocco, C., Noli, B., Ferri, G. L., …Jethwa, P. H. (2017). Correction: Hypothalamic over-expression of VGF in the Siberian hamster increases energy expenditure and reduces body weight gain (PLoS ONE 12:2: (e0172724) DOI: 10.1371/journal.pone.0172724). PLoS ONE, 12(7), https://doi.org/10.1371/journal.pone.0182594

© 2017 Lewis et al. 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 cred... Read More about Correction: Hypothalamic over-expression of VGF in the Siberian hamster increases energy expenditure and reduces body weight gain (PLoS ONE 12:2: (e0172724) DOI: 10.1371/journal.pone.0172724).

Reduced adiposity attenuates FGF21 mediated metabolic improvements in the Siberian hamster (2017)
Journal Article
Lewis, J. E., Samms, R. J., Cooper, S., Luckett, J. C., Perkins, A. C., Adams, A. C., …Ebling, F. J. (in press). Reduced adiposity attenuates FGF21 mediated metabolic improvements in the Siberian hamster. Scientific Reports, 7(1), Article 4238. https://doi.org/10.1038/s41598-017-03607-x

FGF21 exerts profound metabolic effects in Siberian hamsters exposed to long day (LD) photoperiods that increase appetite and adiposity, however these effects are attenuated in short day (SD) animals that display hypophagia and reduced adiposity. The... Read More about Reduced adiposity attenuates FGF21 mediated metabolic improvements in the Siberian hamster.

Hypothalamic over-expression of VGF in the Siberian hamster increases energy expenditure and reduces body weight gain (2017)
Journal Article
Lewis, J. E., Brameld, J. M., Hill, P., Cocco, C., Noli, B., Ferri, G., …Jethwa, P. (2017). Hypothalamic over-expression of VGF in the Siberian hamster increases energy expenditure and reduces body weight gain. PLoS ONE, 12, Article e01727. https://doi.org/10.1371/journal.pone.0172724

VGF (non-acronymic) was first highlighted to have a role in energy homeostasis through experiments involving dietary manipulation in mice. Fasting increased VGF mRNA in the Arc and levels were subsequently reduced upon refeeding. This anabolic role f... Read More about Hypothalamic over-expression of VGF in the Siberian hamster increases energy expenditure and reduces body weight gain.

Photoperiod-induced increases in bone mineral apposition rate in Siberian hamsters and the involvement of seasonal leptin changes (2017)
Journal Article
Kokolski, M., Ebling, F. J., Henstock, J. R., & Anderson, S. I. (2017). Photoperiod-induced increases in bone mineral apposition rate in Siberian hamsters and the involvement of seasonal leptin changes. Frontiers in Endocrinology, 8, Article 357. https://doi.org/10.3389/fendo.2017.00357

The adipokine leptin regulates energy balance, appetite, and reproductive maturation. Leptin also acts on bone growth and remodeling, but both osteogenic and anti-osteogenic effects have been reported depending on experimental conditions. Siberian ha... Read More about Photoperiod-induced increases in bone mineral apposition rate in Siberian hamsters and the involvement of seasonal leptin changes.

Thyroid hormone and vitamin D regulate VGF expression and promoter activity (2016)
Journal Article
Lewis, J. E., Brameld, J. M., Hill, P., Wilson, D., Barrett, P., Ebling, F. J., & Jethwa, P. H. (2016). Thyroid hormone and vitamin D regulate VGF expression and promoter activity. Journal of Molecular Endocrinology, 56(2), 123-134. https://doi.org/10.1530/JME-15-0224

The Siberian hamster (Phodopus sungorus) survives winter by decreasing food intake and catabolizing abdominal fat reserves, resulting in a sustained, profound loss of body weight. Hypothalamic tanycytes are pivotal for this process. In these cells, s... Read More about Thyroid hormone and vitamin D regulate VGF expression and promoter activity.

Antibody-mediated inhibition of the FGFR1c isoform induces a catabolic lean state in Siberian hamsters (2015)
Journal Article
Samms, R. J., Lewis, J. E., Lory, A., Fowler, M. J., Cooper, S., Warner, A., …Ebling, F. J. (2015). Antibody-mediated inhibition of the FGFR1c isoform induces a catabolic lean state in Siberian hamsters. Current Biology, 25(22), https://doi.org/10.1016/j.cub.2015.10.010

Hypothalamic tanycytes are considered to function as sensors of peripheral metabolism [1]. To facilitate this role, they express a wide range of receptors, including fibroblast growth factor receptor 1 (FGFR1). Using a monoclonal antibody (IMC-H7) th... Read More about Antibody-mediated inhibition of the FGFR1c isoform induces a catabolic lean state in Siberian hamsters.

Dual effects of fibroblast growth factor 21 on hepatic energy metabolism (2015)
Journal Article
Samms, R. J., Murphy, M., Fowler, M. J., Cooper, S., Emmerson, P., Coskun, T., …Tsintzas, K. (2015). Dual effects of fibroblast growth factor 21 on hepatic energy metabolism. Journal of Endocrinology, 227(1), https://doi.org/10.1530/JOE-15-0334

The aim of this study was to investigate the mechanisms by which FGF21 affects hepatic integration of carbohydrate and fat metabolism in Siberian hamsters, a natural model of adiposity. Twelve aged matched adult male Siberian hamsters maintained in t... Read More about Dual effects of fibroblast growth factor 21 on hepatic energy metabolism.

The use of viral 2A sequence for the simultaneous over-expression of both the vgf gene and enhanced green fluorescent protein eGFP (2015)
Journal Article
Lewis, J. E., Brameld, J. M., Hill, P., Barrett, P., Ebling, F. J., & Jethwa, P. (in press). The use of viral 2A sequence for the simultaneous over-expression of both the vgf gene and enhanced green fluorescent protein eGFP. Journal of Neuroscience Methods, 256, https://doi.org/10.1016/j.jneumeth.2015.08.013

Introduction: The viral 2A sequence has become an attractive alternative to the traditional internal ribosomal entry site (IRES) for simultaneous over-expression of two genes and in combination with recombinant adeno-associated viruses (rAAV) has bee... Read More about The use of viral 2A sequence for the simultaneous over-expression of both the vgf gene and enhanced green fluorescent protein eGFP.