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Published on: September 25, 2011
Targeting colon cancer via antimicrobial RT2 peptide: a system biology study
Zahra Hosseinpour1, Mona Zamanian Azodi2, Somayeh Jahani Sherafat3
1Cancer Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Aim:
This study aims to investigate the anticancer molecular mechanism of RT2 through protein-protein interaction (PPI) network analysis. For this aim, a bioinformatics evaluation of the proteome profile of colon cancer is carried out.
Background:
Antimicrobial peptides such as RT2 showed anticancer properties against various tumors. The molecular mechanism of the anticancer effect of RT2 is a challenging subject.
Methods:
By applying Cytoscape V.3.9.1 and integrated apps, the profile of the interaction network and related centrality is analyzed. An enrichment analysis of hub bottlenecks was also performed, and highlighted biological processes were visualized and determined.
Results:
Several 207 differentially expressed proteins were retrieved by PPI network analysis, and 10 hub bottlenecks were introduced. Among these differentially expressed proteins (DEPs), only AKT1 is from the queried DEPs. Key biological processes contributing to RT2 targeting mechanism include "Regulation of fibroblast proliferation", "Positive regulation of cyclin-dependent protein serine/threonine kinase activity", "positive regulation of miRNA transcription", and "fungiform papilla formation".
Conclusion:
In conclusion, central proteins Tp53, MYC, EGFR, AKT1, HDAC1, and SRC can be introduced as a targeted biomarker panel of bioactive peptide treatments. However, extensive research is required to establish this claim before clinical application.
Insights
RT2, an antimicrobial peptide, exhibits anticancer properties. Protein-protein interaction network analysis identified key proteins like Tp53, MYC, and EGFR as potential biomarkers for RT2
Area of Science:
- Bioinformatics
- Molecular Oncology
- Proteomics
Background:
- Antimicrobial peptides, including RT2, demonstrate broad-spectrum anticancer activity.
- The precise molecular mechanisms underlying RT2's anticancer effects remain incompletely understood.
- Colon cancer presents a significant challenge, necessitating novel therapeutic strategies.
Purpose of the Study:
- To elucidate the anticancer molecular mechanisms of RT2 using protein-protein interaction (PPI) network analysis.
- To identify potential therapeutic targets and biomarkers for RT2-mediated anticancer effects in colon cancer.
- To perform a bioinformatics evaluation of the colon cancer proteome profile.
Main Methods:
- Utilized Cytoscape V.3.9.1 and integrated applications for PPI network analysis.
- Analyzed network topology, centrality, and identified hub bottleneck proteins.
- Conducted enrichment analysis to determine key biological processes associated with RT2's mechanism of action.
Main Results:
- Identified 207 differentially expressed proteins (DEPs) through PPI network analysis.
- Highlighted 10 hub bottleneck proteins, with AKT1 being a key finding among DEPs.
- Key biological processes implicated include fibroblast proliferation regulation and kinase activity modulation.
Conclusions:
- Central proteins (Tp53, MYC, EGFR, AKT1, HDAC1, SRC) are proposed as a targeted biomarker panel for RT2 therapy.
- These identified proteins may serve as crucial targets for future drug development.
- Further extensive research is warranted to validate these findings for clinical application.
