Title : Doxorubicin directs the accumulation of interleukin-12 induced IFN gamma into tumors for enhancing STAT1 dependent antitumor effect.

Pub. Date : 2007 Jul 15

PMID : 17634555






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1 Doxorubicin directs the accumulation of interleukin-12 induced IFN gamma into tumors for enhancing STAT1 dependent antitumor effect. Doxorubicin interferon gamma Mus musculus
2 To show that doxorubicin enhances the accumulation of IL-12-induced IFN gamma into tumors and the signal transducer and activator of transcription 1 (Stat1)-dependent antitumor efficacy, the distribution of IFN gamma and the therapeutic end points, such as T-cell infiltration, inhibition of tumor vessel density, tumor growth inhibition, and inhibition of spontaneous tumor metastasis in wild-type and Stat1(-/-) host and tumors were determined after the treatment at the indicated time points. Doxorubicin interferon gamma Mus musculus
3 To show that doxorubicin enhances the accumulation of IL-12-induced IFN gamma into tumors and the signal transducer and activator of transcription 1 (Stat1)-dependent antitumor efficacy, the distribution of IFN gamma and the therapeutic end points, such as T-cell infiltration, inhibition of tumor vessel density, tumor growth inhibition, and inhibition of spontaneous tumor metastasis in wild-type and Stat1(-/-) host and tumors were determined after the treatment at the indicated time points. Doxorubicin interferon gamma Mus musculus
4 We discovered that doxorubicin enhances the accumulation of IL-12-induced IFN gamma in tumors. Doxorubicin interferon gamma Mus musculus
5 The doxorubicin-mediated accumulation of IFN gamma in tumors is caused by an increased accumulation of IFN gamma-secreting immune cells and not by a direct translocation of IFN gamma protein into tumors. Doxorubicin interferon gamma Mus musculus
6 The doxorubicin-mediated accumulation of IFN gamma in tumors is caused by an increased accumulation of IFN gamma-secreting immune cells and not by a direct translocation of IFN gamma protein into tumors. Doxorubicin interferon gamma Mus musculus
7 The doxorubicin-mediated accumulation of IFN gamma in tumors is caused by an increased accumulation of IFN gamma-secreting immune cells and not by a direct translocation of IFN gamma protein into tumors. Doxorubicin interferon gamma Mus musculus
8 Depletion of immune cells reverses the doxorubicin-mediated accumulation of IFN gamma into tumors and reverses the inhibition of tumor vessel density induced by coadministration of doxorubicin and IL-12 DNA. Doxorubicin interferon gamma Mus musculus
9 Knocking out IFN gamma signaling in the tumor host reverses the significant inhibition of tumor growth by coadministration of doxorubicin and IL-12. Doxorubicin interferon gamma Mus musculus
10 CONCLUSIONS: The enhanced antitumor efficacy by coadministration of doxorubicin and IL-12 is dependent on the accumulation of IFN gamma in tumors. Doxorubicin interferon gamma Mus musculus