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LncRNA NBR2 inhibits tumorigenesis by regulating autophagy in hepatocellular carcinoma

Jia-Qi Sheng1, Mu-Ru Wang1, Dan Fang1

  • 1Division of Gastroenterology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.

Biomedicine & Pharmacotherapy = Biomedecine & Pharmacotherapie
|December 31, 2020
PubMed

Insights

Long noncoding RNA NBR2 (neighbor of BRCA1 gene 2) acts as a tumor suppressor in liver cancer. Lower NBR2 expression correlates with poor survival and advanced disease, suggesting its therapeutic potential.

Area of Science:

  • Oncology
  • Molecular Biology
  • Gene Regulation

Background:

  • Long noncoding RNAs (lncRNAs) are implicated in tumorigenesis and cancer therapy.
  • LncRNA NBR2 expression is reduced in various cancers, but its role in hepatocellular carcinoma (HCC) and autophagy remains unclear.

Purpose of the Study:

  • To investigate the role of lncRNA NBR2 in hepatocellular carcinoma (HCC).
  • To determine the relationship between NBR2 expression, HCC progression, and autophagy.

Main Methods:

  • Analysis of NBR2 expression in HCC patient samples and cell lines.
  • Assessment of NBR2's impact on HCC cell proliferation, invasion, and migration.
  • Investigation of NBR2's effect on autophagy pathways, including Beclin 1, ERK, and JNK signaling.

Main Results:

  • Lower NBR2 expression in HCC patients correlated with significantly worse overall survival, especially in advanced stages.
  • NBR2 expression was inversely associated with the malignancy and differentiation of HCC cell lines.
  • NBR2 suppressed HCC cell proliferation, invasion, and migration by repressing Beclin 1-dependent autophagy via ERK and JNK pathways.

Conclusions:

  • LncRNA NBR2 functions as a tumor suppressor gene in hepatocellular carcinoma.
  • NBR2 inhibits autophagy-driven cell proliferation through the ERK and JNK pathways.
  • NBR2 represents a potential novel biomarker and therapeutic target for HCC.
Keywords:
AutophagyHepatocellular carcinomaLong noncoding RNANBR2Tumorigenesis

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