What will your doctors do with this?
Potentials of Neuropeptides as Therapeutic Agents for Neurological Diseases
Xin Yi Yeo 1,2, Grace Cunliffe 1,3, Roger C. Ho 2,4, Su Seong Lee 5,* and Sangyong Jung 1,6,*
1 Institute of Molecular and Cell Biology (IMCB), Agency for Science, Technology and Research (A*STAR),
Singapore 138667, Singapore; xinyi.yeo12@sps.nus.edu.sg (X.Y.Y.);
grace.cunliffe@postgrad.manchester.ac.uk (G.C.)
2 Department of Psychological Medicine, Yong Loo Lin School of Medicine, National University of Singapore,
Singapore 119228, Singapore; pcmrhcm@nus.edu.sg
3 Division of Neuroscience and Experimental Psychology, School of Biological Sciences, Faculty of Biology,
Medicine and Health, University of Manchester, Manchester M13 9PL, UK
4 Institute for Health Innovation & Technology (iHealthtech), National University of Singapore,
Singapore 117599, Singapore
5 NanoBio Lab, Institute of Materials Research and Engineering (IMRE), Agency for Science,
Technology and Research (A*STAR), Singapore 138667, Singapore
6 Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore,
Singapore 117593, Singapore
* Correspondence: Lee_Su_Seong@imre.a-star.edu.sg (S.S.L.); Jung_Sangyong@imcb.a-star.edu.sg (S.J.);
Tel.: +65-6319-4808 (S.S.L.); +65-6478-8744 (S.J.)
Abstract:
Despite recent leaps in modern medicine, progress in the treatment of neurological diseases remains slow. The near impermeable blood-brain barrier (BBB) that prevents the entry of therapeutics into the brain, and the complexity of neurological processes, limits the specificity of potential therapeutics. Moreover, a lack of etiological understanding and the irreversible nature of neurological conditions have resulted in low tolerability and high failure rates towards existing small
molecule-based treatments. Neuropeptides, which are small proteinaceous molecules produced by
the body, either in the nervous system or the peripheral organs, modulate neurological function.
Although peptide-based therapeutics originated from the treatment of metabolic diseases in the
1920s, the adoption and development of peptide drugs for neurological conditions are relatively
recent. In this review, we examine the natural roles of neuropeptides in the modulation of neurological function and the development of neurological disorders. Furthermore, we highlight the potential of these proteinaceous molecules in filling gaps in current therapeutics.
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