PMID- 33677254 OWN - NLM STAT- MEDLINE DCOM- 20210610 LR - 20240226 IS - 1878-1705 (Electronic) IS - 1567-5769 (Linking) VI - 95 DP - 2021 Jun TI - Tumor-associated macrophages-mediated CXCL8 infiltration enhances breast cancer metastasis: Suppression by Danirixin. PG - 107153 LID - S1567-5769(20)33620-1 [pii] LID - 10.1016/j.intimp.2020.107153 [doi] AB - Breast cancer is the most frequent cancer among females and the second most common cause of cancer deaths worldwide. Tumor-associated macrophages (TAMs) are the most abundant immune cell population in the tumor microenvironment, including breast cancer. Breast cancer stem cells (BCSCs) play an important role in regulating breast cancer growth and metastasis, which still remains an obstacle for successful treatment of breast cancer and requires further investigation, as well as the potential therapeutic strategies. Cytokine array validated that C-X-C motif chemokine ligand 8 (CXCL8) is a pivotal chemokine secreted by TAMs, and CXCL8 could enhance breast cancer migration, invasion ability, and epithelial-mesenchymal transition (EMT) in both animal and human breast cancer. In this study, the clinical data firstly indicated that high CXCL8 expression was significantly associated with metastasis and tumor growth in breast cancer patients. Then, we showed that TAMs-released CXCL8 could markedly elevate the migration, invasion and EMT events in breast cancer cells, as well as the self-renewal of BCSCs in vitro. These processes were markedly abrogated by the treatment of Danirixin, a reversible and selective antagonist of CXC chemokine receptor 2 (CXCR2). Consistently, the in vivo analysis confirmed that CXCL8 suppression using Danirixin effectively reduced the tumor growth, lung metastasis and repressed the self-renewal of BCSCs. Collectively, TAMs/CXCL8 could enhance BCSCs self-renewal and breast cancer metastasis, and these effects could be markedly abolished by Danirixin treatment, suppressing breast cancer progression consequently. Therefore, Danirixin could be considered as a novel and effective therapeutic strategy for breast cancer treatment without obvious toxicity to major organs. CI - Copyright (c) 2020 Elsevier B.V. All rights reserved. FAU - Nie, Gang AU - Nie G AD - Department of Breast Center, The Affiliated Hospital of Qingdao University, Shandong 266000, China. FAU - Cao, Xiangbo AU - Cao X AD - The Affiliated Hospital of Qingdao University, Library, Shandong 266000, China. FAU - Mao, Yan AU - Mao Y AD - Department of Breast Center, The Affiliated Hospital of Qingdao University, Shandong 266000, China. FAU - Lv, Zhidong AU - Lv Z AD - Department of Breast Center, The Affiliated Hospital of Qingdao University, Shandong 266000, China. FAU - Lv, Meng AU - Lv M AD - Department of Breast Center, The Affiliated Hospital of Qingdao University, Shandong 266000, China. FAU - Wang, Yongmei AU - Wang Y AD - Department of Breast Center, The Affiliated Hospital of Qingdao University, Shandong 266000, China. FAU - Wang, Haibo AU - Wang H AD - Department of Breast Center, The Affiliated Hospital of Qingdao University, Shandong 266000, China. FAU - Liu, Chen AU - Liu C AD - Department of Breast Center, The Affiliated Hospital of Qingdao University, Shandong 266000, China. Electronic address: liuchen.qduedu@foxmail.com. LA - eng PT - Journal Article DEP - 20210305 PL - Netherlands TA - Int Immunopharmacol JT - International immunopharmacology JID - 100965259 RN - 0 (Antineoplastic Agents) RN - 0 (CXCL8 protein, human) RN - 0 (Interleukin-8) RN - 0 (Piperidines) RN - 0 (Sulfones) RN - R318PGH5VP (danirixin) SB - IM MH - Animals MH - Antineoplastic Agents/pharmacology/*therapeutic use MH - Breast Neoplasms/blood/*drug therapy/immunology/pathology MH - Cell Line MH - Cell Movement/drug effects MH - Epithelial-Mesenchymal Transition/drug effects MH - Female MH - Humans MH - Interleukin-8/blood/*immunology MH - Mice, Inbred BALB C MH - Mice, Nude MH - Neoplastic Stem Cells/drug effects MH - Piperidines/pharmacology/*therapeutic use MH - Sulfones/pharmacology/*therapeutic use MH - Tumor-Associated Macrophages/*immunology MH - Mice OTO - NOTNLM OT - BCSCs OT - Breast cancer OT - CXCL8 OT - Danirixin OT - TAMs EDAT- 2021/03/08 06:00 MHDA- 2021/06/11 06:00 CRDT- 2021/03/07 20:35 PHST- 2020/05/31 00:00 [received] PHST- 2020/10/07 00:00 [revised] PHST- 2020/10/21 00:00 [accepted] PHST- 2021/03/08 06:00 [pubmed] PHST- 2021/06/11 06:00 [medline] PHST- 2021/03/07 20:35 [entrez] AID - S1567-5769(20)33620-1 [pii] AID - 10.1016/j.intimp.2020.107153 [doi] PST - ppublish SO - Int Immunopharmacol. 2021 Jun;95:107153. doi: 10.1016/j.intimp.2020.107153. Epub 2021 Mar 5.