Evaluation of VGF peptides as potential anti-obesity candidates in pre-clinical animal models

Louise S. Dalbøge, Julie M. Jacobsen, Suneet Mehrotra, Aaron J. Mercer, Nick Cox, Fa Liu, Camdin M. Bennett, Meerit Said, Mads Tang-Christensen, Kirsten Raun, Jakob L. Hansen, Kevin L. Grove, Arian F. Baquero

    Research output: Contribution to journalArticlepeer-review

    Abstract

    VGF is a peptide precursor expressed in neuroendocrine cells that is suggested to play a role in the regulation of energy homeostasis. VGF is proteolytically cleaved to yield multiple bioactive peptides. However, the specific actions of VGF-derived peptides on energy homeostasis remain unclear. The aim of the present work was to investigate the role of VGF-derived peptides in energy homeostasis and explore the pharmacological actions of VGF-derived peptides on body weight in preclinical animal models. VGF-derived peptides (NERP-1, NERP-2, PGH-NH2, PGH−OH, NERP-4, TLQP-21, TLQP-30, TLQP-62, HHPD-41, AQEE-30, and LQEQ-19) were synthesized and screened for their ability to affect neuronal activity in vitro on hypothalamic brain slices and modulate food intake and energy expenditure after acute central administration in vivo. In addition, the effects of NERP-1, NERP-2, PGH-NH2, TLQP-21, TLQP-62, and HHPD-41 on energy homeostasis were studied after chronic central infusion. NERP-1, PGH-NH2, HHPD-41, and TLQP-62 increased the functional activity of hypothalamic neuronal networks. However, none of the peptides altered energy homeostasis after either acute or chronic ICV administration. The present data do not support the potential use of the tested VGF-derived peptides as novel anti-obesity drug candidates.

    Original languageEnglish (US)
    Article number170444
    JournalPeptides
    Volume136
    DOIs
    StatePublished - Feb 2021

    Keywords

    • ICV
    • Obesity
    • TLQP-21
    • VGF

    ASJC Scopus subject areas

    • Biochemistry
    • Physiology
    • Endocrinology
    • Cellular and Molecular Neuroscience

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