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Espejo C, Wilson R, Pye RJ, Ratcliffe JC, Ruiz-Aravena M, Willms E, Wolfe BW, Hamede R, Hill AF, Jones ME, Woods GM, Lyons AB. Cathelicidin-3 Associated With Serum Extracellular Vesicles Enables Early Diagnosis of a Transmissible Cancer. Front Immunol 2022; 13:858423. [PMID: 35422813 PMCID: PMC9004462 DOI: 10.3389/fimmu.2022.858423] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Accepted: 03/01/2022] [Indexed: 12/03/2022] Open
Abstract
The identification of practical early diagnostic biomarkers is a cornerstone of improved prevention and treatment of cancers. Such a case is devil facial tumor disease (DFTD), a highly lethal transmissible cancer afflicting virtually an entire species, the Tasmanian devil (Sarcophilus harrisii). Despite a latent period that can exceed one year, to date DFTD diagnosis requires visual identification of tumor lesions. To enable earlier diagnosis, which is essential for the implementation of effective conservation strategies, we analyzed the extracellular vesicle (EV) proteome of 87 Tasmanian devil serum samples using data-independent acquisition mass spectrometry approaches. The antimicrobial peptide cathelicidin-3 (CATH3), released by innate immune cells, was enriched in serum EV samples of both devils with clinical DFTD (87.9% sensitivity and 94.1% specificity) and devils with latent infection (i.e., collected while overtly healthy, but 3-6 months before subsequent DFTD diagnosis; 93.8% sensitivity and 94.1% specificity). Although high expression of antimicrobial peptides has been mostly related to inflammatory diseases, our results suggest that they can be also used as accurate cancer biomarkers, suggesting a mechanistic role in tumorous processes. This EV-based approach to biomarker discovery is directly applicable to improving understanding and diagnosis of a broad range of diseases in other species, and these findings directly enhance the capacity of conservation strategies to ensure the viability of the imperiled Tasmanian devil population.
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Affiliation(s)
- Camila Espejo
- Tasmanian School of Medicine, College of Health and Medicine, University of Tasmania, Hobart, TAS, Australia
| | - Richard Wilson
- Central Science Laboratory, University of Tasmania, Hobart, TAS, Australia
| | - Ruth J Pye
- Menzies Institute for Medical Research, College of Health and Medicine, University of Tasmania, Hobart, TAS, Australia
| | - Julian C Ratcliffe
- La Trobe University Bioimaging Platform, La Trobe University, Bundoora, VIC, Australia
| | - Manuel Ruiz-Aravena
- School of Natural Sciences, University of Tasmania, Hobart, TAS, Australia.,Department of Microbiology and Cell Biology, Montana State University, Bozeman, MT, United States
| | - Eduard Willms
- Department of Biochemistry and Chemistry, School of Agriculture, Biomedicine and Environment, La Trobe Institute for Molecular Science, La Trobe University, Bundoora, VIC, Australia
| | - Barrett W Wolfe
- Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, TAS, Australia
| | - Rodrigo Hamede
- School of Natural Sciences, University of Tasmania, Hobart, TAS, Australia.,CANECEV, Centre de Recherches Ecologiques et Evolutives sur le Cancer, Montpellier, France
| | - Andrew F Hill
- Department of Biochemistry and Chemistry, School of Agriculture, Biomedicine and Environment, La Trobe Institute for Molecular Science, La Trobe University, Bundoora, VIC, Australia.,Institute for Health and Sport, Victoria University, Footscray, VIC, Australia
| | - Menna E Jones
- School of Natural Sciences, University of Tasmania, Hobart, TAS, Australia
| | - Gregory M Woods
- Menzies Institute for Medical Research, College of Health and Medicine, University of Tasmania, Hobart, TAS, Australia
| | - A Bruce Lyons
- Tasmanian School of Medicine, College of Health and Medicine, University of Tasmania, Hobart, TAS, Australia
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Silk MR, Newman J, Ratcliffe JC, White JF, Caradoc-Davies T, Price JR, Perrier S, Thompson PE, Chalmers DK. Parallel and antiparallel cyclic d/l peptide nanotubes. Chem Commun (Camb) 2017; 53:6613-6616. [PMID: 28581562 DOI: 10.1039/c7cc00846e] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Nanotubes made from H-bonded cyclic d/l peptide (CP) subunits have great potential for the construction of nanomaterials of wide chemical and structural diversity but, to date, difficulties in structural characterisation have restricted development of these materials. We present the first crystal structures of continuous CP nanotubes with antiparallel and parallel stacking arrangements, assembled separately from two peptides; cyclo[(Asp-d-Leu-Lys-d-Leu)2] and cyclo[(Asp-d-Ala-Lys-d-Ala)2].
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Affiliation(s)
- Mitchell R Silk
- Medicinal Chemistry, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, Victoria 3052, Australia.
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