Potent growth-inhibitory effect of TRAIL therapy mediated by double-regulated oncolytic adenovirus on osteosarcoma

Osteosarcoma (OS) severely threatens the health of young people and understanding on the molecular mechanisms of OS etiology enables gene therapy to become an effective therapeutic modality. However, insufficient expression level of genes using existing vectors limits the clinical application of gen...

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Veröffentlicht in:Molecular and cellular biochemistry 2012-05, Vol.364 (1-2), p.337-344
Hauptverfasser: Chunbao, Li, Qianpeng, Cheng, Jia, Liu, Bin, Wang, Dongfeng, Chen, Yujie, Liu
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container_issue 1-2
container_start_page 337
container_title Molecular and cellular biochemistry
container_volume 364
creator Chunbao, Li
Qianpeng, Cheng
Jia, Liu
Bin, Wang
Dongfeng, Chen
Yujie, Liu
description Osteosarcoma (OS) severely threatens the health of young people and understanding on the molecular mechanisms of OS etiology enables gene therapy to become an effective therapeutic modality. However, insufficient expression level of genes using existing vectors limits the clinical application of gene therapy for OS. To solve the problem, we developed an oncolytic adenoviral vector, OAT, which can selectively and efficiently replicate in OS cells to enhance the expression of transferred genes. We demonstrated that OAT-mediated TRAIL expression is significantly elevated after infection of OS cells than replication-incompetent Ad5 vector. Increased antitumor capacity was observed in OS cells after OAT-TRAIL treatment both in vitro and in vivo. In normal cells, adenoviral replication, TRAIL expression and growth-inhibiting effect were quite limited when OAT-TRAIL was administrated, showing a high biosafety of this oncolytic adenoviral vector. Collectively, we generated an efficient and promising expression vector for OS gene therapy.
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However, insufficient expression level of genes using existing vectors limits the clinical application of gene therapy for OS. To solve the problem, we developed an oncolytic adenoviral vector, OAT, which can selectively and efficiently replicate in OS cells to enhance the expression of transferred genes. We demonstrated that OAT-mediated TRAIL expression is significantly elevated after infection of OS cells than replication-incompetent Ad5 vector. Increased antitumor capacity was observed in OS cells after OAT-TRAIL treatment both in vitro and in vivo. In normal cells, adenoviral replication, TRAIL expression and growth-inhibiting effect were quite limited when OAT-TRAIL was administrated, showing a high biosafety of this oncolytic adenoviral vector. Collectively, we generated an efficient and promising expression vector for OS gene therapy.</abstract><cop>Boston</cop><pub>Springer US</pub><pmid>22354724</pmid><doi>10.1007/s11010-012-1235-9</doi><tpages>8</tpages></addata></record>
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subjects Adenoviridae - genetics
Adenovirus
Adenoviruses
Animals
Biochemistry
Biomedical and Life Sciences
Biosafety
Bone cancer
Bone Neoplasms - genetics
Bone Neoplasms - therapy
Cardiology
Cell Line, Tumor
Development and progression
Etiology
Expression vectors
Fibroblasts - cytology
Gene expression
Gene therapy
Genetic engineering
Genetic Therapy - methods
Genetic Vectors
Green Fluorescent Proteins - genetics
Growth
Health aspects
Humans
Infection
Life Sciences
Medical Biochemistry
Mice
Mice, Inbred BALB C
Molecular biology
Molecular modelling
Neoplasms, Experimental
Oncology
Oncolysis
Oncolytic Virotherapy - methods
Oncolytic Viruses - genetics
Osteosarcoma
Osteosarcoma - genetics
Osteosarcoma - therapy
Replication
Therapeutic applications
TNF-Related Apoptosis-Inducing Ligand - biosynthesis
TNF-Related Apoptosis-Inducing Ligand - genetics
TRAIL protein
Tumors
title Potent growth-inhibitory effect of TRAIL therapy mediated by double-regulated oncolytic adenovirus on osteosarcoma
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