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miR-1260b, mediated by YY1, activates KIT signaling by targeting SOCS6 to regulate cell proliferation and apoptosis

Yang Xia1, Ke Wei1, Feng-Ming Yang2

  • 1Department of Thoracic Surgery, the First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China.

Cell Death & Disease
|February 10, 2019
PubMed

Insights

MicroRNA-1260b (miR-1260b) promotes non-small cell lung cancer (NSCLC) growth and survival by targeting SOCS6 and activating KIT signaling. This study identifies miR-1260b as a potential biomarker and therapeutic target for NSCLC.

Area of Science:

  • Oncology
  • Molecular Biology
  • Biochemistry

Background:

  • Non-small cell lung cancer (NSCLC) is a prevalent and aggressive malignancy.
  • MicroRNAs (miRNAs) are recognized as crucial regulators and biomarkers in NSCLC.
  • The specific role of miR-1260b in NSCLC proliferation and apoptosis remained uninvestigated.

Purpose of the Study:

  • To elucidate the functional role and molecular mechanisms of miR-1260b in non-small cell lung cancer.
  • To determine the relationship between miR-1260b expression and clinicopathological features of NSCLC.
  • To explore miR-1260b as a potential diagnostic biomarker and therapeutic target for NSCLC.

Main Methods:

  • Quantitative real-time PCR to measure miR-1260b expression in NSCLC samples and cell lines.
  • Cell proliferation, cell cycle, apoptosis, and senescence assays to assess functional impact.
  • Luciferase reporter assays and Western blotting to confirm direct targeting of SOCS6 and downstream signaling.
  • Analysis of correlations between miR-1260b expression and clinical data.

Main Results:

  • miR-1260b was significantly upregulated in NSCLC plasma, tissues, and cell lines, correlating with tumor size and progression.
  • Overexpression of miR-1260b promoted NSCLC cell proliferation and cell cycle progression while inhibiting apoptosis and senescence.
  • miR-1260b directly targeted SOCS6, leading to its suppression and subsequent activation of KIT signaling.
  • YY1 was identified as an upstream regulator of miR-1260b.

Conclusions:

  • This study is the first to demonstrate that miR-1260b, regulated by YY1, promotes NSCLC progression by targeting SOCS6 and activating KIT signaling.
  • miR-1260b plays a critical role in regulating NSCLC cell proliferation and apoptosis.
  • miR-1260b represents a promising biomarker and therapeutic target for non-small cell lung cancer.

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