Related Experiment Video

Updated: May 31, 2025

Sequencing Small Non-coding RNA from Formalin-fixed Tissues and Serum-derived Exosomes from Castration-resistant Prostate Cancer Patients
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Sequencing Small Non-coding RNA from Formalin-fixed Tissues and Serum-derived Exosomes from Castration-resistant Prostate Cancer Patients

Published on: November 19, 2019

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SNP rs9364554 Modulates Androgen Receptor Binding and Drug Response in Prostate Cancer

Yuqian Yan1,2, Lei Shi3, Tao Ma4

  • 1Department of Biochemistry and Molecular Biology, Mayo Clinic College of Medicine and Science, Rochester, MN 55905, USA.

Biomolecules
|January 25, 2025
PubMed

Insights

A specific gene variant (SNP rs9364554) impacts prostate cancer drug response by altering SLC22A3 transporter levels. This finding may predict treatment outcomes and guide targeted therapies.

Area of Science:

  • Oncology
  • Genetics
  • Molecular Biology

Background:

  • Prostate cancer treatment effectiveness is heavily influenced by androgen receptor (AR) signaling.
  • The SLC22A3 gene, a membrane transporter, is implicated in prostate cancer drug response via SNP rs9364554.
  • Understanding genetic factors affecting AR signaling is crucial for improving prostate cancer therapies.

Purpose of the Study:

  • To investigate the role of SNP rs9364554 in regulating SLC22A3 expression and its association with prostate cancer drug resistance.
  • To explore the molecular mechanisms by which this SNP influences transcription factor binding and gene regulation.
  • To identify potential biomarkers for predicting chemotherapeutic outcomes in prostate cancer.

Main Methods:

  • Genome-wide analysis of SNP rs9364554 location and its association with SLC22A3 transcription using TCGA data.
  • Validation in prostate cancer cell lines via quantitative PCR and Western blotting.
  • Electrophoretic mobility shift assay (EMSA) and ChIP-Seq to assess transcription factor binding and H3K27ac enrichment at the SLC22A3 promoter.

Main Results:

  • SNP rs9364554 is located within the SLC22A3 gene, affecting its transcription levels.
  • Downregulation of SLC22A3 correlates with increased drug resistance in prostate cancer.
  • The SNP influences the binding affinity of transcription factors FOXA1 and AR, modulating SLC22A3 regulation.

Conclusions:

  • SNP rs9364554 serves as a potential biomarker for predicting prostate cancer chemotherapeutic response.
  • The study elucidates mechanisms of drug resistance involving SLC22A3 and its regulation by FOXA1 and AR.
  • Targeting FOXA1 presents a potential strategy to enhance drug efficacy in advanced prostate cancer patients.
Keywords:
ARFOXA1SLC22A3SNP rs9364554drug efficacyprostate cancer

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