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Neutrophils Promote Breast Cancer Progression and Metastasis via LFA-1 Integrin
Linköping University, Department of Clinical and Experimental Medicine, Division of Surgery, Orthopedics and Oncology. Linköping University, Faculty of Medicine and Health Sciences.
Linköping University, Department of Clinical and Experimental Medicine. (Charlotta Dabrosin)
Linköping University, Department of Medical and Health Sciences, Division of Cardiovascular Medicine. Linköping University, Faculty of Medicine and Health Sciences. Region Östergötland, Center for Diagnostics, Department of Clinical Pharmacology.
Linköping University, Department of Clinical and Experimental Medicine, Division of Surgery, Orthopedics and Oncology. Linköping University, Faculty of Medicine and Health Sciences. Region Östergötland, Center for Surgery, Orthopaedics and Cancer Treatment, Department of Oncology.
2015 (English)Conference paper, Poster (Other academic)
Abstract [en]

Cancer is considered an inflammatory condition where immune cells play an important role in progression and metastasis. Neutrophils may be pro- or antitumorigenic, depending on their phenotype or the number of infiltrating neutrophils in the tumor microenvironment. Massive infiltration of neutrophils in cancer tissue may elicit a cytotoxic effect, leading to tumor regression, whereas a S139 low-grade neutrophil gradient is tumor progressive. Chemokines, cytokines, and growth factors present in the tumor microenvironment, as well as cell-cell interactions mediated by integrins have shown to be determinant steps for cancer cells to break through the endothelial wall and establish metastatic niches. In this work we evaluated the role of lymphocyte functionassociated antigen 1 (LFA-1) integrin in neutrophils-mediated metastasis of estrogen receptor positive breast cancer cells (MCF-7) cells in a tumor xenograft model in zebrafish and in neutrophil infiltration in MCF-7 mammospheres. The metastatic capability of MCF-7 cells was evaluated in presence or absence of human neutrophils and with/without estradiol treatment. Two days old zebrafish embryos were injected into the perivitelline space with labeled MCF-7 cells and human neutrophils, an anti-human LFA-1 antibody (CD11a) was included. We show that estradiol treatment significantly increased the infiltration of neutrophils into MCF-7 mammospheres and this infiltration was significantly reduced by the presence of an anti-human CD11a antibody. Co-injection of MCF-7 cells with neutrophils significantly increased the migration of MCF-7 cells to distant sites in zebrafish and this effect was inhibited by using an anti-human CD11a antibody. We conclude that neutrophils affect the dissemination of breast cancer cells via LFA-1 integrin. Although estradiol increased the number of infiltrating neutrophils into mammospheres exposure to estradiol seemed to have minor effects on the dissemination in the zebrafish.

Place, publisher, year, edition, pages
Springer, 2015. Vol. 8, 139-140 p.
National Category
Immunology in the medical area
Identifiers
URN: urn:nbn:se:liu:diva-136140DOI: 10.1007/s12307-015-0175-9PubMedID: 26374343OAI: oai:DiVA.org:liu-136140DiVA: diva2:1085336
Conference
7th International conference on Tumor Microenvironment: Progression, Therapy& Prevention Tel Aviv, Israel October 11 -15, 2015.
Funder
Swedish Cancer Society, 2015/309Swedish Research Council, 2013-2457Linköpings universitet
Available from: 2017-03-28 Created: 2017-03-28 Last updated: 2017-04-07Bibliographically approved

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Vazquez Rodriguez, GabrielaAbrahamsson, AnnelieJensen, LasseDabrosin, Charlotta
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Division of Surgery, Orthopedics and OncologyFaculty of Medicine and Health SciencesDepartment of Clinical and Experimental MedicineDivision of Cardiovascular MedicineDepartment of Clinical PharmacologyDepartment of Oncology
Immunology in the medical area

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