Resolvins suppress tumor growth and enhance cancer therapy
- J Exp Med. 2018 Jan 2;215(1):115-140. doi: 10.1084/jem.20170681.
- 1. Center for Vascular Biology Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA.
- 2. Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA.
- 3. Cancer Center, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA.
- 4. Center for Experimental Therapeutics and Reperfusion Injury, Department of Anesthesiology, Perioperative and Pain Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA [email protected].
- 5. Vascular Biology Program, Boston Children's Hospital, Harvard Medical School, Boston, MA.
- 6. Department of Pathology, Boston Children's Hospital, Harvard Medical School, Boston, MA.
- 7. Center for Experimental Therapeutics and Reperfusion Injury, Department of Anesthesiology, Perioperative and Pain Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA.
- 8. Department of Anesthesia, Boston Children's Hospital, Harvard Medical School, Boston, MA.
- 9. Department of Surgery, Boston Children's Hospital, Harvard Medical School, Boston, MA.
- 10. The William Harvey Research Institute, Barts and The London School of Medicine, Queen Mary University of London, London, England, UK.
- 11. Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA.
- 12. Human Biology Division, Fred Hutchinson Cancer Research Center, Seattle, WA.
- 13. Division of Pediatric Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA [email protected].
- 14. Department of Pediatric Hematology/Oncology, Boston Children's Hospital, Harvard Medical School, Boston, MA.
- 15. Institute of Systems Biology, Seattle, WA [email protected].
- 16. Center for Vascular Biology Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA [email protected].
Cancer therapy reduces tumor burden by killing tumor cells, yet it simultaneously creates tumor cell debris that may stimulate inflammation and tumor growth. Thus, conventional Cancer therapy is inherently a double-edged sword. In this study, we show that tumor cells killed by chemotherapy or targeted therapy ("tumor cell debris") stimulate primary tumor growth when coinjected with a subthreshold (nontumorigenic) inoculum of tumor cells by triggering macrophage proinflammatory cytokine release after phosphatidylserine exposure. Debris-stimulated tumors were inhibited by antiinflammatory and proresolving lipid autacoids, namely resolvin D1 (RvD1), RvD2, or RvE1. These mediators specifically inhibit debris-stimulated Cancer progression by enhancing clearance of debris via macrophage phagocytosis in multiple tumor types. Resolvins counterregulate the release of cytokines/chemokines, including TNFα, IL-6, IL-8, CCL4, and CCL5, by human macrophages stimulated with cell debris. These results demonstrate that enhancing endogenous clearance of tumor cell debris is a new therapeutic target that may complement cytotoxic Cancer therapies.
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