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High tissue expression of TLRs combined with high density of tumor infiltrating lymphocytes predicts a better prognosis in colorectal cancer patients

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  • Ines Beilmann-Lehtonen
  • Jussi Kasurinen
  • Jaana Hagström
  • Tuomas Kaprio
  • Camilla Böckelman
  • Caj Haglund

Abstract

Background: Colorectal cancer causes 935,000 cancer deaths yearly. High local immune cell infiltration serves as a positive prognostic factor in CRC. Toll-like receptors (TLRs) induce innate immune responses and lead to adaptive immune system activation. TLRs play protumorigenic and antitumorigenic roles. We aimed to explore the relationship between TLR immunoexpressions and the infiltration densities of T-lymphocytes in CRC. Methods: Immunohistochemical TLR2, TLR4, TLR5, and TLR7 positivity and the density of CD3- and CD8-positive cells in tumoral and stromal tissue were evaluated from the tissue microarray slides of 549 consecutive CRC surgical patients treated at Helsinki University Hospital, Finland, between 1998 and 2005. We calculated the associations and correlations using Pearson’s chi-square and Spearman’s correlation tests, generating survival curves using the Kaplan–Meier method. Results: Positive intratumoral CD3 and CD8 densities associated with a high TLR2 expression (p

Suggested Citation

  • Ines Beilmann-Lehtonen & Jussi Kasurinen & Jaana Hagström & Tuomas Kaprio & Camilla Böckelman & Caj Haglund, 2023. "High tissue expression of TLRs combined with high density of tumor infiltrating lymphocytes predicts a better prognosis in colorectal cancer patients," PLOS ONE, Public Library of Science, vol. 18(1), pages 1-15, January.
    • Handle: RePEc:plo:pone00:0280085
    DOI: 10.1371/journal.pone.0280085
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