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NPAS2, transcriptionally activated by ARRB1, promotes the malignant behaviours of lung adenocarcinoma cells and

Shenglan Wang1, Chunhong Huang1, Yanbin Zheng1

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|April 8, 2024
PubMed
Summary
This summary is machine-generated.

Beta-arrestin-1 (ARRB1) activates Neuronal PAS domain protein 2 (NPAS2) in lung adenocarcinoma (LUAD). This ARRB1-NPAS2 axis promotes cancer progression and glycolysis, offering a new therapeutic target for LUAD treatment.

Keywords:
ARRB1NPAS2glycolysislung adenocarcinoma

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Area of Science:

  • Oncology
  • Molecular Biology
  • Biochemistry

Background:

  • Lung adenocarcinoma (LUAD) presents a significant global health challenge with high morbidity and mortality.
  • Neuronal PAS domain protein 2 (NPAS2) is implicated as an oncogene in LUAD, but its precise molecular mechanisms remain largely unelucidated.

Purpose of the Study:

  • To investigate the molecular mechanism of NPAS2 in LUAD progression.
  • To explore the regulatory relationship between NPAS2 and beta-arrestin-1 (ARRB1) in LUAD.
  • To assess the impact of NPAS2 on cellular behaviors and glucose metabolism in LUAD.

Main Methods:

  • Expression analysis of NPAS2 and ARRB1 in LUAD cell lines.
  • Gain- and loss-of-function studies utilizing cell proliferation, apoptosis, migration, and invasion assays.
  • Evaluation of cellular metabolism including oxygen consumption, glycolysis, and enzyme activities.
  • Western blot analysis for key protein expression.

Main Results:

  • Aberrant upregulation of NPAS2 and ARRB1 was observed in LUAD cell lines.
  • ARRB1 acts as a transcription factor for NPAS2, binding to its promoter region.
  • NPAS2 depletion inhibited LUAD cell proliferation, migration, invasion, and epithelial-mesenchymal transition, while promoting apoptosis.
  • NPAS2 knockdown reversed metabolic reprogramming by inhibiting aerobic glycolysis and reducing glycolytic enzyme expression.
  • ARRB1 overexpression partially rescued the effects of NPAS2 knockdown.

Conclusions:

  • ARRB1 transcriptionally activates NPAS2, contributing to malignant phenotypes and altered glucose metabolism in LUAD.
  • The ARRB1-NPAS2 pathway represents a potential therapeutic target for LUAD treatment.