PMID- 35996062 OWN - NLM STAT- MEDLINE DCOM- 20221222 LR - 20230105 IS - 2509-2723 (Electronic) IS - 2509-2715 (Print) IS - 2509-2723 (Linking) VI - 44 IP - 5 DP - 2022 Oct TI - Replenishment of myeloid-derived suppressor cells (MDSCs) overrides CR-mediated protection against tumor growth in a murine model of triple-negative breast cancer. PG - 2471-2490 LID - 10.1007/s11357-022-00635-y [doi] AB - Caloric restriction (CR) is the leading non-pharmacological intervention to delay induced and spontaneous tumors in pre-clinical models. These effects of CR are largely attributed to canonical inhibition of pro-growth pathways. However, our recent data suggest that CR impairs primary tumor growth and cancer progression in the murine 4T1 model of triple negative breast cancer (TNBC), at least in part, through reduced frequency of the myeloid-derived suppressor cells (MDSC). In the present study, we sought to determine whether injection of excess MDSCs could block regression in 4T1 tumor growth and metastatic spread in BALB/cJ female mice undergoing daily CR. Our findings show that MDSC injection impeded CR-mediated protection against tumor growth without increasing lung metastatic burden. Overall, these results reveal that CR can slow cancer progression by affecting immune suppressive cells.Impact statement: Inoculation of MDSCs from donor mice effectively impedes the ability of calorie restriction to protect against primary tumor growth without impacting lung metastatic burden in recipient animals. CI - (c) 2022. This is a U.S. Government work and not under copyright protection in the US; foreign copyright protection may apply. FAU - Pomatto-Watson, Laura C D AU - Pomatto-Watson LCD AD - Experimental Gerontology Section, Translational Gerontology Branch, National Institute On Aging, National Institutes of Health, Baltimore, MD, 21224, USA. FAU - Bodogai, Monica AU - Bodogai M AD - Immunoregulation Section, Laboratory of Molecular Biology and Immunology, National Institute On Aging, National Institutes of Health, Baltimore, MD, 21224, USA. FAU - Carpenter, Melissa AU - Carpenter M AD - Experimental Gerontology Section, Translational Gerontology Branch, National Institute On Aging, National Institutes of Health, Baltimore, MD, 21224, USA. FAU - Chowdhury, Dolly AU - Chowdhury D AD - Experimental Gerontology Section, Translational Gerontology Branch, National Institute On Aging, National Institutes of Health, Baltimore, MD, 21224, USA. FAU - Krishna, Priya AU - Krishna P AD - Experimental Gerontology Section, Translational Gerontology Branch, National Institute On Aging, National Institutes of Health, Baltimore, MD, 21224, USA. FAU - Ng, Sandy AU - Ng S AD - Experimental Gerontology Section, Translational Gerontology Branch, National Institute On Aging, National Institutes of Health, Baltimore, MD, 21224, USA. FAU - Bosompra, Oye AU - Bosompra O AD - Experimental Gerontology Section, Translational Gerontology Branch, National Institute On Aging, National Institutes of Health, Baltimore, MD, 21224, USA. FAU - Kato, Jonathan AU - Kato J AD - Experimental Gerontology Section, Translational Gerontology Branch, National Institute On Aging, National Institutes of Health, Baltimore, MD, 21224, USA. FAU - Wong, Sarah AU - Wong S AD - Experimental Gerontology Section, Translational Gerontology Branch, National Institute On Aging, National Institutes of Health, Baltimore, MD, 21224, USA. FAU - Reyes-Sepulveda, Carlos AU - Reyes-Sepulveda C AD - Experimental Gerontology Section, Translational Gerontology Branch, National Institute On Aging, National Institutes of Health, Baltimore, MD, 21224, USA. FAU - Bernier, Michel AU - Bernier M AD - Experimental Gerontology Section, Translational Gerontology Branch, National Institute On Aging, National Institutes of Health, Baltimore, MD, 21224, USA. FAU - Price, Nathan L AU - Price NL AD - Experimental Gerontology Section, Translational Gerontology Branch, National Institute On Aging, National Institutes of Health, Baltimore, MD, 21224, USA. FAU - Biragyn, Arya AU - Biragyn A AD - Immunoregulation Section, Laboratory of Molecular Biology and Immunology, National Institute On Aging, National Institutes of Health, Baltimore, MD, 21224, USA. FAU - de Cabo, Rafael AU - de Cabo R AUID- ORCID: 0000-0003-2830-5693 AD - Experimental Gerontology Section, Translational Gerontology Branch, National Institute On Aging, National Institutes of Health, Baltimore, MD, 21224, USA. decabora@mail.nih.gov. LA - eng GR - FI2 GM123963/GM/NIGMS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, N.I.H., Intramural DEP - 20220823 PL - Switzerland TA - Geroscience JT - GeroScience JID - 101686284 SB - IM MH - Humans MH - Female MH - Mice MH - Animals MH - *Myeloid-Derived Suppressor Cells/metabolism/pathology MH - *Triple Negative Breast Neoplasms/metabolism/pathology MH - Caloric Restriction MH - Disease Models, Animal MH - Cell Line, Tumor PMC - PMC9768076 OTO - NOTNLM OT - Breast Cancer OT - Caloric Restriction OT - Fasting Mimicking Diet OT - Myeloid-derived suppressor cells OT - metastasis COIS- The authors declare no competing interests. EDAT- 2022/08/23 06:00 MHDA- 2022/12/23 06:00 PMCR- 2022/08/23 CRDT- 2022/08/22 23:33 PHST- 2022/06/10 00:00 [received] PHST- 2022/07/28 00:00 [accepted] PHST- 2022/08/23 06:00 [pubmed] PHST- 2022/12/23 06:00 [medline] PHST- 2022/08/22 23:33 [entrez] PHST- 2022/08/23 00:00 [pmc-release] AID - 10.1007/s11357-022-00635-y [pii] AID - 635 [pii] AID - 10.1007/s11357-022-00635-y [doi] PST - ppublish SO - Geroscience. 2022 Oct;44(5):2471-2490. doi: 10.1007/s11357-022-00635-y. Epub 2022 Aug 23.