Biological effects of a de novo designed myxoma virus peptide analogue: evaluation of cytotoxicity on tumor cells.

<h4>Background</h4>The Resonant Recognition Model (RRM) is a physico-mathematical model that interprets protein sequence linear information using digital signal processing methods. In this study the RRM concept was employed for structure-function analysis of myxoma virus (MV) proteins an...

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Autores principales:	Taghrid S Istivan, Elena Pirogova, Emily Gan, Nahlah M Almansour, Peter J Coloe, Irena Cosic
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2011
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/ed2723d5850443ba8929841462dbffd7
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spelling	oai:doaj.org-article:ed2723d5850443ba8929841462dbffd72021-11-04T06:08:17ZBiological effects of a de novo designed myxoma virus peptide analogue: evaluation of cytotoxicity on tumor cells.1932-620310.1371/journal.pone.0024809https://doaj.org/article/ed2723d5850443ba8929841462dbffd72011-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/21949758/?tool=EBIhttps://doaj.org/toc/1932-6203<h4>Background</h4>The Resonant Recognition Model (RRM) is a physico-mathematical model that interprets protein sequence linear information using digital signal processing methods. In this study the RRM concept was employed for structure-function analysis of myxoma virus (MV) proteins and the design of a short bioactive therapeutic peptide with MV-like antitumor/cytotoxic activity.<h4>Methodology/principal findings</h4>The analogue RRM-MV was designed by RRM as a linear 18 aa 2.3 kDa peptide. The biological activity of this computationally designed peptide analogue against cancer and normal cell lines was investigated. The cellular cytotoxicity effects were confirmed by confocal immunofluorescence microscopy, by measuring the levels of cytoplasmic lactate dehydrogenase (LDH) and by Prestoblue cell viability assay for up to 72 hours in peptide treated and non-treated cell cultures. Our results revealed that RRM-MV induced a significant dose and time-dependent cytotoxic effect on murine and human cancer cell lines. Yet, when normal murine cell lines were similarly treated with RRM-MV, no cytotoxic effects were observed. Furthermore, the non-bioactive RRM designed peptide RRM-C produced negligible cytotoxic effects on these cancer and normal cell lines when used at similar concentrations. The presence/absence of phosphorylated Akt activity in B16F0 mouse melanoma cells was assessed to indicate the possible apoptosis signalling pathway that could be affected by the peptide treatment. So far, Akt activity did not seem to be significantly affected by RRM-MV as is the case for the original viral protein.<h4>Conclusions/significance</h4>Our findings indicate the successful application of the RRM concept to design a bioactive peptide analogue (RRM-MV) with cytotoxic effects on tumor cells only. This 2.345 kDa peptide analogue to a 49 kDa viral protein may be suitable to be developed as a potential cancer therapeutic. These results also open a new direction to the rational design of therapeutic agents for future cancer treatment.Taghrid S IstivanElena PirogovaEmily GanNahlah M AlmansourPeter J ColoeIrena CosicPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 6, Iss 9, p e24809 (2011)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Taghrid S Istivan Elena Pirogova Emily Gan Nahlah M Almansour Peter J Coloe Irena Cosic Biological effects of a de novo designed myxoma virus peptide analogue: evaluation of cytotoxicity on tumor cells.
description	<h4>Background</h4>The Resonant Recognition Model (RRM) is a physico-mathematical model that interprets protein sequence linear information using digital signal processing methods. In this study the RRM concept was employed for structure-function analysis of myxoma virus (MV) proteins and the design of a short bioactive therapeutic peptide with MV-like antitumor/cytotoxic activity.<h4>Methodology/principal findings</h4>The analogue RRM-MV was designed by RRM as a linear 18 aa 2.3 kDa peptide. The biological activity of this computationally designed peptide analogue against cancer and normal cell lines was investigated. The cellular cytotoxicity effects were confirmed by confocal immunofluorescence microscopy, by measuring the levels of cytoplasmic lactate dehydrogenase (LDH) and by Prestoblue cell viability assay for up to 72 hours in peptide treated and non-treated cell cultures. Our results revealed that RRM-MV induced a significant dose and time-dependent cytotoxic effect on murine and human cancer cell lines. Yet, when normal murine cell lines were similarly treated with RRM-MV, no cytotoxic effects were observed. Furthermore, the non-bioactive RRM designed peptide RRM-C produced negligible cytotoxic effects on these cancer and normal cell lines when used at similar concentrations. The presence/absence of phosphorylated Akt activity in B16F0 mouse melanoma cells was assessed to indicate the possible apoptosis signalling pathway that could be affected by the peptide treatment. So far, Akt activity did not seem to be significantly affected by RRM-MV as is the case for the original viral protein.<h4>Conclusions/significance</h4>Our findings indicate the successful application of the RRM concept to design a bioactive peptide analogue (RRM-MV) with cytotoxic effects on tumor cells only. This 2.345 kDa peptide analogue to a 49 kDa viral protein may be suitable to be developed as a potential cancer therapeutic. These results also open a new direction to the rational design of therapeutic agents for future cancer treatment.
format	article
author	Taghrid S Istivan Elena Pirogova Emily Gan Nahlah M Almansour Peter J Coloe Irena Cosic
author_facet	Taghrid S Istivan Elena Pirogova Emily Gan Nahlah M Almansour Peter J Coloe Irena Cosic
author_sort	Taghrid S Istivan
title	Biological effects of a de novo designed myxoma virus peptide analogue: evaluation of cytotoxicity on tumor cells.
title_short	Biological effects of a de novo designed myxoma virus peptide analogue: evaluation of cytotoxicity on tumor cells.
title_full	Biological effects of a de novo designed myxoma virus peptide analogue: evaluation of cytotoxicity on tumor cells.
title_fullStr	Biological effects of a de novo designed myxoma virus peptide analogue: evaluation of cytotoxicity on tumor cells.
title_full_unstemmed	Biological effects of a de novo designed myxoma virus peptide analogue: evaluation of cytotoxicity on tumor cells.
title_sort	biological effects of a de novo designed myxoma virus peptide analogue: evaluation of cytotoxicity on tumor cells.
publisher	Public Library of Science (PLoS)
publishDate	2011
url	https://doaj.org/article/ed2723d5850443ba8929841462dbffd7
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Biological effects of a de novo designed myxoma virus peptide analogue: evaluation of cytotoxicity on tumor cells.

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