PMID- 16951206 OWN - NLM STAT- MEDLINE DCOM- 20071126 LR - 20210102 IS - 1538-7445 (Electronic) IS - 0008-5472 (Linking) VI - 66 IP - 17 DP - 2006 Sep 1 TI - Induction of potent antitumor immunity by intratumoral injection of interleukin 23-transduced dendritic cells. PG - 8887-96 AB - Dendritic cells (DCs) are potent antigen-presenting cells that play a critical role in priming immune responses to tumor. Interleukin (IL)-23 can act directly on DC to promote immunogenic presentation of tumor peptide in vitro. Here, we evaluated the combination of bone marrow-derived DC and IL-23 on the induction of antitumor immunity in a mouse intracranial glioma model. DCs can be transduced by an adenoviral vector coding single-chain mouse IL-23 to express high levels of bioactive IL-23. Intratumoral implantation of IL-23-expressing DCs produced a protective effect on intracranial tumor-bearing mice. The mice consequently gained systemic immunity against the same tumor rechallenge. The protective effect of IL-23-expressing DCs was comparable with or even better than that of IL-12-expressing DCs. IL-23-transduced DC (DC-IL-23) treatment resulted in robust intratumoral CD8(+) and CD4(+) T-cell infiltration and induced a specific TH1-type response to the tumor in regional lymph nodes and spleen at levels greater than those of nontransduced DCs. Moreover, splenocytes from animals treated with DC-IL-23 showed heightened levels of specific CTL activity. In vivo lymphocyte depletion experiments showed that the antitumor immunity induced by DC-IL-23 was mainly dependent on CD8(+) T cells and that CD4(+) T cells and natural killer cells were also involved. In summary, i.t. injection of DC-IL-23 resulted in significant and effective systemic antitumor immunity in intracranial tumor-bearing mice. These findings suggest a new approach to induce potent tumor-specific immunity to intracranial tumors. This approach may have therapeutic potential for treating human glioma. FAU - Hu, Jinwei AU - Hu J AD - Maxine Dunitz Neurosurgical Institute, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA. FAU - Yuan, Xiangpeng AU - Yuan X FAU - Belladonna, Maria L AU - Belladonna ML FAU - Ong, John M AU - Ong JM FAU - Wachsmann-Hogiu, Sebastian AU - Wachsmann-Hogiu S FAU - Farkas, Daniel L AU - Farkas DL FAU - Black, Keith L AU - Black KL FAU - Yu, John S AU - Yu JS LA - eng GR - 1K23 NS02232/NS/NINDS NIH HHS/United States GR - 1R01 NS048959/NS/NINDS NIH HHS/United States GR - 1R21 NS048879/NS/NINDS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, U.S. Gov't, Non-P.H.S. PL - United States TA - Cancer Res JT - Cancer research JID - 2984705R RN - 0 (Interleukin-23) SB - IM MH - Animals MH - Bone Marrow Cells/immunology MH - Cell Line, Tumor MH - Dendritic Cells/*immunology/*transplantation MH - Glioma/*immunology MH - Interleukin-23/genetics/*immunology MH - Lymphocyte Depletion MH - Melanoma/*immunology MH - Mice MH - Neoplasms/*immunology EDAT- 2006/09/05 09:00 MHDA- 2007/12/06 09:00 CRDT- 2006/09/05 09:00 PHST- 2006/09/05 09:00 [pubmed] PHST- 2007/12/06 09:00 [medline] PHST- 2006/09/05 09:00 [entrez] AID - 66/17/8887 [pii] AID - 10.1158/0008-5472.CAN-05-3448 [doi] PST - ppublish SO - Cancer Res. 2006 Sep 1;66(17):8887-96. doi: 10.1158/0008-5472.CAN-05-3448.