Publication:
Characterizing the Inflammatory Profile of Neutrophil-Rich Triple-Negative Breast Cancer

dc.contributor.authorAl Qutami, Fatma
dc.contributor.authorAlHalabi, Walaa
dc.contributor.authorVijayakumar, Aswathy
dc.contributor.authorRawat, Surendra Singh
dc.contributor.authorSamreen, Baila
dc.contributor.authorHachim, Mahmood
dc.date.accessioned2024-06-21T09:22:39Z
dc.date.available2024-06-21T09:22:39Z
dc.date.issued2024-02
dc.description.abstractAbstract: Breast cancer (BC) is one of the most common types of cancer in women in the United Arab Emirates. Immunogenic tumours, such as triple-negative breast cancer (TNBC), show increased neutrophil infiltration, which is associated with poor prognosis and limited efficacy of immunotherapy. This study aims to investigate in vitro the bidirectional effect of neutrophils on metastatic TNBC (MDA-MB-231) compared to less-metastatic luminal breast cancer (MCF-7) cell lines. We found that BC cells or their conditioned medium (CM) reduced the viability of neutrophil-like cells (HL60). This was supported by increased cellular stress and NETosis in differentiated HL60 cells (dHL60) upon exposure to MDA-MB-231 compared to MCF-7-CM using nucleic acid staining essays. Flow cytometry showed comparable expression of inflammatory markers by polymorphonuclear cells (PMN) when treated with MDA-MB-231-CM and standard polarizing cocktails. Furthermore, MDA-MB-231-CM triggered an inflammatory pattern with evidence of stronger adhesion (CD62L) and degranulation (CD11b and CD66b) phenotypes. The proinflammatory polarization of dHL60 by MDA-MB-231-CM was additionally confirmed by the elevated CD54 expression, myeloperoxidase, and CD11b protein levels, which matched an increased transwell migratory capacity. In conclusion, BC might use neutrophils to their benefit through NETosis and complement system activation, which makes this crosstalk a potential mechanism for understanding tumour progression. Keywords: NETosis; TNBC; neutrophiles; triple-negative breast cancer.en_US
dc.identifier.urihttps://repository.mbru.ac.ae/handle/1/1489
dc.language.isoenen_US
dc.subjectNETosisen_US
dc.subjectTNBCen_US
dc.subjectNeutrophilesen_US
dc.subjectTriple-negative breast canceren_US
dc.titleCharacterizing the Inflammatory Profile of Neutrophil-Rich Triple-Negative Breast Canceren_US
dc.typeArticleen_US
dspace.entity.typePublicationen_US

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