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Updated: Jun 27, 2025

Isolation and Characterization of a Head and Neck Squamous Cell Carcinoma Subpopulation Having Stem Cell Characteristics
11:28

Isolation and Characterization of a Head and Neck Squamous Cell Carcinoma Subpopulation Having Stem Cell Characteristics

Published on: May 11, 2016

8.5K

CD271 mRNA/hnRNPA2B1 complex promotes proliferation and stemness in oral and head and neck squamous cell carcinoma

Mai Mochizuki1, Rie Shibuya-Takahashi1, Shin-Ichiro Kanno2

  • 1Division of Cancer Stem Cell, Miyagi Cancer Center Research Institute, Natori, Japan.

Cancer Science
|May 6, 2024
PubMed

Insights

CD271 messenger RNA (mRNA), not its protein, drives cancer cell proliferation by interacting with hnRNPA2B1. This noncoding RNA function is key in head and neck squamous cell carcinoma.

Area of Science:

  • Molecular biology
  • Cancer research
  • RNA biology

Background:

  • RNAs, including mRNA, act as signaling molecules.
  • CD271 (nerve growth factor receptor) is implicated in cancer, but its mechanism is unclear.

Purpose of the Study:

  • To investigate the role of CD271 mRNA versus protein in cancer proliferation.
  • To elucidate the mechanism of CD271's function in oral and head and neck squamous cell carcinoma.

Main Methods:

  • Generated CD271 knockout and CD271 mRNA/protein knockout cell lines.
  • Assessed spheroid cell proliferation and sphere formation.
  • Analyzed CD271 mRNA and hnRNPA2B1 protein interaction.
  • Examined CD271 mRNA/protein ratios in surgical specimens.

Main Results:

  • CD271 mRNA, not protein, significantly enhanced spheroid cell proliferation.
  • Sphere formation decreased in CD271-/- cells but not in protein knockout cells.
  • Mutated CD271 mRNA lacking protein translation still promoted proliferation.
  • CD271 mRNA binds hnRNPA2B1 at the 3'-UTR, and inhibiting this interaction reduced proliferation.
  • Higher CD271 mRNA/protein ratios were observed in cancerous tissues.

Conclusions:

  • CD271 mRNA possesses dual coding and noncoding functions.
  • The noncoding RNA function of CD271 mRNA is predominant in oral and head and neck squamous cell carcinoma.
  • CD271 mRNA's interaction with hnRNPA2B1 is crucial for cancer cell proliferation.
Keywords:
CD271head and neck squamous cell carcinomahnRNPA2B1mRNAoral squamous cell carcinoma

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