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Molecules 2018, 23(7), 1733; https://doi.org/10.3390/molecules23071733

The Biological and Biophysical Properties of the Spider Peptide Gomesin

School of Pharmacy and Biomedical Sciences, Curtin Health Innovation Research Institute and Curtin Institute for Computation, Curtin University, GPO Box U1987, Perth WA 6845, Australia
These authors contributed equally to this work.
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Received: 1 July 2018 / Revised: 11 July 2018 / Accepted: 12 July 2018 / Published: 16 July 2018
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Abstract

This review summarises the current knowledge of Gomesin (Gm), an 18-residue long, cationic anti-microbial peptide originally isolated from the haemocytes of the Brazilian tarantula Acanthoscurria gomesiana. The peptide shows potent cytotoxic activity against clinically relevant microbes including Gram-positive and Gram-negative bacteria, fungi, and parasites. In addition, Gm shows in-vitro and in-vivo anti-cancer activities against several human and murine cancers. The peptide exerts its cytotoxic activity by permeabilising cell membranes, but the underlying molecular mechanism of action is still unclear. Due to its potential as a therapeutic agent, the structure and membrane-binding properties, as well as the leakage and cytotoxic activities of Gm have been studied using a range of techniques. This review provides a summary of these studies, with a particular focus on biophysical characterisation studies of peptide variants that have attempted to establish a structure-activity relationship. Future studies are still needed to rationalise the binding affinity and cell-type-specific selectivity of Gm and its variants, while more pre-clinical studies are required to develop Gm into a therapeutically useful peptide. View Full-Text
Keywords: toxins; peptides; spider peptides; peptide-membrane interactions; anti-microbial peptides; anti-cancer peptides; structure-activity relationship; rational drug design toxins; peptides; spider peptides; peptide-membrane interactions; anti-microbial peptides; anti-cancer peptides; structure-activity relationship; rational drug design
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Tanner, J.D.; Deplazes, E.; Mancera, R.L. The Biological and Biophysical Properties of the Spider Peptide Gomesin. Molecules 2018, 23, 1733.

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