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Adenosinergic Signalling in Cervical Cancer Microenvironment.

Isabele Cristiana Iser1, Ana Paula Santin Bertoni1, Liziane Raquel Beckenkamp1

  • 1Department of Basics Health Sciences and Laboratory of Cell Biology, Federal University of Health Sciences of Porto Alegre, Porto Alegre, RS, Brazil.

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Cervical cancer cells show decreased CD73 expression due to gene hypermethylation. This epigenetic change may offer new therapeutic targets for cervical cancer, impacting adenosine signaling.

Keywords:
CD73NT5Eadenosineadenosine kinasecervical cancermethylation

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Area of Science:

  • Oncology
  • Molecular Biology
  • Epigenetics

Background:

  • Cervical cancer remains a significant global health burden despite HPV vaccination.
  • The ecto-5'-nucleotidase (CD73) and extracellular adenosine (ADO) axis is implicated in cancer progression, though CD73's role can be context-dependent.
  • Understanding CD73's function in cervical cancer is crucial for developing novel therapeutic strategies.

Purpose of the Study:

  • To review the pathophysiological role of CD73 in cervical cancer.
  • To analyze the adenosinergic signaling pathway components in cervical cancer tissues versus normal tissues using in silico methods.
  • To investigate the potential of epigenetic modulation targeting CD73 in cervical cancer.

Main Methods:

  • Literature review of CD73's role in cervical cancer.
  • In silico analysis of key adenosinergic signaling components (CD73, ADO, ADK).
  • Comparison of gene expression and methylation status in tumor vs. non-tumor cervical tissues.

Main Results:

  • The NT5E gene, encoding CD73, is hypermethylated in cervical cancer tissues, leading to reduced CD73 expression.
  • Cervical cancer cells exhibit decreased CD73 expression compared to normal cervical cells.
  • High extracellular adenosine (ADO) availability and subsequent conversion to AMP by ADK contribute to global hypermethylation.

Conclusions:

  • Epigenetic alterations, specifically hypermethylation of the NT5E gene, downregulate CD73 expression in cervical cancer.
  • The altered adenosinergic axis, characterized by decreased CD73 and increased ADO, suggests a novel pathophysiological mechanism in cervical cancer.
  • Epigenetic modulation of CD73 presents a potential new therapeutic avenue for cervical cancer treatment.