Mesenchymal stem cells engineered by modified polyethylenimine polymer for targeted cancer gene therapy, in vitro and in vivo.

Mesenchymal stem cells engineered by modified polyethylenimine polymer for targeted cancer gene therapy, in vitro and in vivo.

Publication date: May 14, 2020

Cell-based delivery system is a promising strategy to protect therapeutic agents from the immune system and provide targeted delivery. Mesenchymal stem cells (MSCs) have recently been introduced as an encouraging vehicle in cell-based gene therapy due to their unique features including tumor-tropic property and migratory ability. However, gene transfer into MSCs is limited due to low efficiency and cytotoxicity of carriers. In this study, we designed a novel delivery system based on polyethylenimine (PEI ) to improve these features of carrier and transfect plasmid encoding TRAIL to MSCs. Tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) is a death ligand of TNF family with selective effect on cancerous cells. Then, death induction and migration ability of TRAIL-expressing MSCs was studied in melanoma cells. The effect of engineered-MSCs as an anti-tumor vehicle was also investigated in mice bearing melanoma cells. Our findings indicated that heterocyclic amine derivative of PEI showed significant improvement in MSCs viability determined by MTT assay and gene expression using fluorescent microscopy, flow cytometry and Western blot analysis. We observed that engineered-MSCs could migrate toward and induce cell death in B16F0 cells in vitro. The single administration of TRAIL-expressing MSCs could delay tumor appearance and efficiently reduce tumor weights. Hematoxylin and eosin staining of tumor sections revealed extensive neoplastic cells necrosis. Furthermore, engineered-MSCs could migrate and localize to tumors sites within five days. Our results indicated that MSCs engineered by modified-PEI/TRAIL complexes could be considered as a promising cellular vehicle for targeted tumor suppression. This article is protected by copyright. All rights reserved.

Concepts Keywords
Apoptosis Tumor
Cytotoxicity Melanoma
Derivative Localize tumors
Eosin MSCs anti tumor
Flow Cytometry Branches of biology
Fluorescent Microscopy Stem cells
Hematoxylin Life sciences
Immune System Cell biology
Ligand TRAIL
Melanoma Biotechnology
Migratory C-Met
Necrosis Regenerative biomedicine
Neoplastic Mesenchymal stem cell
PEI Genetic engineering
Plasmid Apoptosis
Targeted Therapy
Tumor Suppression
Western Blot


Type Source Name
drug DRUGBANK Mesenchymal Stem Cells
disease MESH cancer
pathway KEGG Apoptosis
disease MESH death
disease MESH melanoma
pathway KEGG Melanoma

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