PMID- 9288127 OWN - NLM STAT- MEDLINE DCOM- 19971002 LR - 20210102 IS - 0039-6060 (Print) IS - 0039-6060 (Linking) VI - 122 IP - 2 DP - 1997 Aug TI - Active immunization using dendritic cells mixed with tumor cells inhibits the growth of primary breast cancer. PG - 228-34 AB - BACKGROUND: Dendritic cells (DCs) are potent antigen-presenting cells regarded as crucial in the priming of an immune response. The goal of our study was to test whether bone marrow-generated DCs are capable of inducing protective immunity against a murine breast carcinoma (4T1). METHODS: DCs were grown from Balb/c mice by culturing lymphocyte-immunodepleted bone marrow in murine granulocyte-macrophage colony-stimulating factor containing medium for 10 days. Balb/c mice (five to eight per group) were immunized intradermally with 1 x 10(6) DCs mixed with 2 x 10(6) lethally irradiated 4T1 cells on day 0. Mice in control groups were given intradermal inoculations of phosphate-buffered saline solution, 1 x 10(6) DCs, or lethally irradiated 4T1 cells alone. Booster intraperitoneal immunizations of 2 x 10(6) lethally irradiated 4T1 cells were given on days 7 and 14. All mice were challenged with 5 x 10(3) 4T1 cells subcutaneously 7 days after the final immunization. Animals were examined daily, and tumor volume was recorded twice weekly with calipers. RESULTS: At 21 days there was a significant reduction in tumor growth in mice immunized with DCs mixed with irradiated 4T1 cells as compared with the control groups (p = 0.0005, Kruskal-Wallis test). CONCLUSIONS: These results suggest that DCs mixed with tumor cells as a source of undefined tumor antigen can induce an effective antitumor immune response. This finding provides a rationale for the use of cultured DCs in immunotherapy of breast and other cancers. FAU - Coveney, E AU - Coveney E AD - Department of Surgery, Duke University Medical Center, Durham, N.C. 27710, USA. FAU - Wheatley, G H 3rd AU - Wheatley GH 3rd FAU - Lyerly, H K AU - Lyerly HK LA - eng PT - Journal Article PL - United States TA - Surgery JT - Surgery JID - 0417347 RN - 83869-56-1 (Granulocyte-Macrophage Colony-Stimulating Factor) SB - IM MH - Animals MH - Bone Marrow/drug effects MH - *Bone Marrow Cells MH - Cell Culture Techniques/methods MH - Cell Differentiation MH - Coculture Techniques MH - Cytotoxicity, Immunologic MH - Dendritic Cells/cytology/immunology/*transplantation MH - Granulocyte-Macrophage Colony-Stimulating Factor/*pharmacology MH - *Immunotherapy, Active MH - Lymphocyte Depletion MH - Male MH - Mammary Neoplasms, Experimental/*immunology/*pathology/therapy MH - Mice MH - Mice, Inbred BALB C MH - Phenotype MH - T-Lymphocytes, Cytotoxic/*immunology MH - Tumor Cells, Cultured EDAT- 1997/08/01 00:00 MHDA- 2001/03/28 10:01 CRDT- 1997/08/01 00:00 PHST- 1997/08/01 00:00 [pubmed] PHST- 2001/03/28 10:01 [medline] PHST- 1997/08/01 00:00 [entrez] AID - S0039-6060(97)90013-1 [pii] AID - 10.1016/s0039-6060(97)90013-1 [doi] PST - ppublish SO - Surgery. 1997 Aug;122(2):228-34. doi: 10.1016/s0039-6060(97)90013-1.