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    Hypoxia modulates CCR7 expression in head and neck cancers

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    Publication date
    2018-05
    Author
    Basheer, Haneen A.
    Pakanavicius, E.
    Cooper, Patricia A.
    Shnyder, Steven D.
    Martin, L.
    Hunter, K.D.
    Vinader, Victoria
    Afarinkia, Kamyar
    Keyword
    CCR7
    Head and neck cancer
    Hypoxia
    HIF-1α
    Tumour grade
    Tumour stage
    Peer-Reviewed
    Yes
    
    Metadata
    Show full item record
    Abstract
    The chemokine receptor CCR7 is expressed on lymphocytes and dendritic cells and is responsible for trafficking of these cells in and out of secondary lymphoid organs. It has recently been shown that CCR7 expression is elevated in a number of cancers, including head and neck cancers, and that its expression correlates to lymph node (LN) metastasis. However, little is known about the factors that can induce CCR7 expression in head and neck cancers. We compared the protein expression and functional responses of CCR7 under normoxia and hypoxia in head and neck cancer cell lines OSC-19, FaDu, SCC-4, A-253 and Detroit-562 cultured as monolayers, spheroids, and grown in vivo as xenografts in balb/c mice. In addition, we analysed the correlation between hypoxia marker HIF-1α and CCR7 expression in a tissue microarray comprising 80 clinical samples with various stages and grades of malignant tumour and normal tissue. Under hypoxia, the expression of CCR7 is elevated in both in vitro and in vivo models. Furthermore, in malignant tissue, a correlation is observed between hypoxia marker HIF-1α and CCR7 across all clinical stages. This correlation is also strong in early histological grade of tumours. Hypoxia plays a role in the regulation of the expression of CCR7 and it may contribute to the development of a metastatic phenotype in head and neck cancers through this axis.
    URI
    http://hdl.handle.net/10454/15563
    Version
    Accepted manuscript
    Citation
    Basheer HA, Pakanavicius E, Cooper PA et al (2018) Hypoxia modulates CCR7 expression in head and neck cancers. Oral Oncology. 80: 64-73.
    Link to publisher’s version
    https://doi.org/10.1016/j.oraloncology.2018.03.014
    Type
    Article
    Collections
    Life Sciences Publications

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