Isfahan University of Medical Sciences

Science Communicator Platform

Stay connected! Follow us on X network (Twitter):
Share this content! On (X network) By
The Evaluation of Tlyp-1-Bound Mda-7/Il-24 Killing Activity on a Liver Tumor Cell Line Publisher Pubmed



Rastegari M1 ; Shiri A2 ; Behzadbehbahani A3 ; Rasoolian M4 ; Zare F3 ; Rafiei G3 ; Mortazavi M5 ; Sharifzadeh S3 ; Hosseini SY2
Authors
Show Affiliations
Authors Affiliations
  1. 1. Department of Medical Biotechnology, School of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
  2. 2. Department of Bacteriology and Virology, Shiraz University of Medical Sciences, Shiraz, 71348-14336, Iran
  3. 3. Diagnostic Laboratory Sciences and Technology Research Center, School of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, 71348-14336, Iran
  4. 4. Department of Genetics and Molecular Biology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
  5. 5. Department of Biotechnology, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology, Kerman, Iran

Source: Cancer Biotherapy and Radiopharmaceuticals Published:2021


Abstract

Background: The melanoma differentiation-associated gene-7 (Mda-7)/interleukin-24 (IL-24) is a tumor killing cytokine, the bystander effect of which can be enhanced through tethering to tumor homing peptides (THPs). Materials and Methods: After fusing tLyP-1, RGR, and buforin as THPs to Mda-7/IL-24, enzyme-linked immunosorbent assay (ELISA) was used to determine the secretion potency of the recombinant proteins. The killing potency of plasmids expressing IL-24, IL-24.tLyP1, IL-24.RGR, and buf.IL-24 were assessed, using MTT, Annexin/PI staining assays, as well as measuring the expression level of GADD-153 and BCL2-associated X (BAX) on Huh-7 cells. Three-dimensional structural analysis and protein-receptor interaction were also evaluated by modeling. Results: The ELISA result showed that contrary to IL-24.RGR and buf.IL-24, IL-24.tLyP-1 retained the secretion potency, similar to the native form. The viability assessments showed that IL-24 and IL-24.tLyP-1 had the most growth suppressive effects in comparison with the control group (p < 0.0001). Furthermore, IL-24 and IL-24.tLyP-1 had the highest apoptotic activity and significant upregulatory effect on the GADD-153 and BAX genes (p < 0.0003). The modeling showed that peptide modifications left no detrimental effect on IL-24 attachment to the cognate receptor. Conclusion: IL-24 can tolerate tLyP-1 peptide modification by retaining its secretion potency. Tethering tLyP-1 to IL-24 can induce more apoptosis than its modified versions by RGR or buforin. © Copyright 2021, Mary Ann Liebert, Inc., publishers 2021.
Other Related Docs
10. Recombinant Production and Intein-Mediated Purification of an Antimicrobial Peptide, Br2, International Journal of Peptide Research and Therapeutics (2017)