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      1. Author :
        Hu, Z.; Gerseny, H.; Zhang, Z.; Chen, Y. J.; Berg, A.; Stock, S.; Seth, P.
      2. Title :
      3. Type :
        Journal Article
      4. Year :
        2011
      5. Publication :
        Mol Ther
      6. Products :
      7. Volume :
        19
      8. Issue :
        N/A
      9. Page Numbers :
        N/A
      10. Research Area :
        N/A
      11. Keywords :
        MDA-MB-231-luc2, IVIS, Breast Cancer, Bioware
      12. Abstract :
        In recent years, oncolytic adenoviruses have shown some promise as a novel class of antitumor agents. However, their utility in targeting bone metastases is relatively less studied. We have examined whether the systemic therapy of oncolytic adenoviruses expressing the soluble form of transforming growth factor-beta (TGFbeta) receptor II fused with human immunoglobulin G1 can be developed for the treatment of established breast cancer bone metastases. MDA-MB-231-luc2 human breast cancer cells were injected in the left heart ventricle of nude mice to establish bone metastasis. Mice with hind limb tumors were administered (on days 8 and 11) oncolytic adenoviruses-Ad.sTbetaRFc or mhTERTAd.sTbetaRFc. Skeletal tumor growth was monitored weekly by bioluminescence imaging (BLI) and radiography. At the termination time on day 28, hind limb bones were analyzed for tumor burden, synchrotron micro-computed tomography, and osteoclast activation. Intravenous delivery of Ad.sTbetaRFc and mhTERTAd.sTbetaRFc induced significant inhibition of tumor growth, reduction of tumor burden, osteoclast activation, and increased animals' survival. Oncolytic adenoviruses were safer than dl309, a wild-type virus. A slight elevation of liver enzyme activity was observed after Ad.sTbetaRFc administration; this subsided with time. Based on these studies, we believe that Ad.sTbetaRFc and mhTERTAd.sTbetaRFc can be developed as a safe and effective approach for the treatment of established bone metastasis.
      13. URL :
        http://www.ncbi.nlm.nih.gov/pubmed/21712815
      14. Call Number :
        PKI @ kd.modi @ 8
      15. Serial :
        10493