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MicroRNA Amplification and Recognition through Locked-nucleic-acid In situ Hybridization as a Novel Detection and Quantification Method
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MicroRNA Amplification and Recognition through Locked-nucleic-acid In situ Hybridization as a Novel Detection and Quantification Method

Published on: October 7, 2025

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microRNAs with AAGUGC seed motif constitute an integral part of an oncogenic signaling network

Y Zhou1, O Frings1, R M Branca1

  • 1Department of Oncology-Pathology, Science for Life Laboratory, Karolinska Institutet, Stockholm, Sweden.

Oncogene
|August 2, 2016
PubMed

Insights

Specific microRNAs (miRNAs) with an AAGUGC motif promote cancer cell growth and sensitivity to EGFR-targeted therapy. This discovery offers potential for improved cancer treatment selection.

Area of Science:

  • Molecular Biology
  • Cancer Research
  • Genomics

Background:

  • MicroRNA (miRNA) dysregulation is prevalent in cancer.
  • The precise functions of miRNAs in oncogenesis remain incompletely understood.
  • Identifying specific miRNAs driving cancer progression is crucial.

Purpose of the Study:

  • To identify oncogenic miRNAs in non-small cell lung cancer (NSCLC).
  • To assess the impact of identified miRNAs on response to epidermal growth factor receptor (EGFR)-targeting therapy.
  • To investigate the therapeutic potential of miRNA-based biomarkers.

Main Methods:

  • Functional genomics screens were employed to identify key miRNAs.
  • Global transcriptomics and proteomics analyses were performed.
  • Bioinformatic target prediction and clinical data analysis were utilized.

Main Results:

  • MiRNAs possessing an AAGUGC seed motif were found to enhance cancer cell proliferation.
  • These AAGUGC-motif miRNAs also increased sensitivity to EGFR inhibitors.
  • Identified targets included tumor suppressors regulating the G1/S cell cycle transition.

Conclusions:

  • The AAGUGC seed motif is proposed as an 'oncomotif' driving cancer proliferation.
  • Oncomotif-miRNAs contribute to cancer cell growth and may influence therapeutic response.
  • Findings suggest potential for patient stratification in EGFR-targeted therapies.

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