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| Content Provider | Springer Nature Link |
|---|---|
| Author | Xie, Min Niu, Ji Hong Chang, Yan Qian, Qi Jun Wu, Hong Ping Li, Lin Fang Zhang, Yao Li, Jin Lan Huang, Xiao Jun Ruan, Guo Rui |
| Copyright Year | 2009 |
| Abstract | PDCD5 (programmed cell death 5) accelerates apoptosis of certain tumor cells and the replication-defective Ad-PDCD5 may be a promising agent for enhancing chemosensitivity. In this study, a triple-regulated conditionally replicating adenoviruses (CRAd) carrying PDCD5 gene expression cassette, SG611-PDCD5, was engineered. In SG611-PDCD5, the E1a gene with a deletion of 24 nucleotides within CR2 region is controlled under the human telomerase reverse transcriptase (hTERT) promoter, the E1b gene expression is directed by the hypoxia response element (HRE), whereas the PDCD5 gene is controlled by the cytomegalovirus promoter. The tumor-selective replication of this virus and its antitumor efficacy were characterized in several leukemic cell lines in vitro and in xenograft models of human leukemic cell line in nude mice. It was found by RQ-RT-PCR assay that SG611-PDCD5 expressed PDCD5 efficiently in leukemic cells. In K562 tumor xenograft models, SG611-PDCD5 displayed a tumor killing capacity. At a dose of 1 × 109 plaque-forming units, SG611-PDCD5 alone could completely inhibit the tumor growth and more effective than replication-defective Ad-PDCD5. Histopathologic examination revealed that SG611-PDCD5 administration resulted in leukemic cell apoptosis. We concluded that the triple-regulated SG611-PDCD5, as a more potent and safer antitumor therapeutic, could provide a new strategy for leukemia biotherapy. |
| Starting Page | 1086 |
| Ending Page | 1094 |
| Page Count | 9 |
| File Format | |
| ISSN | 13608185 |
| Journal | Apoptosis |
| Volume Number | 14 |
| Issue Number | 9 |
| e-ISSN | 1573675X |
| Language | English |
| Publisher | Springer US |
| Publisher Date | 2009-06-24 |
| Publisher Place | Boston |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | PDCD5 Gene therapy Conditionally replicating adenoviruses Leukemia Nude mice Virology Biochemistry Oncology Cell Biology Cancer Research |
| Content Type | Text |
| Resource Type | Article |
| Subject | Pharmaceutical Science Biochemistry (medical) Cell Biology Clinical Biochemistry Cancer Research Pharmacology |
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