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G protein gamma 7 suppresses progression of lung adenocarcinoma by inhibiting E2F transcription factor 1

Hongyu Zheng1, Hui Tian1, Xuejuan Yu1

  • 1Department of radiation oncology, QiLu hospital of ShanDong university, Jinan, Shandong 250012, PR China.

International Journal of Biological Macromolecules
|April 17, 2021
PubMed

Insights

G protein gamma 7 (GNG7) acts as a tumor suppressor in lung adenocarcinoma (LUAD). This study shows GNG7 inhibits LUAD cell growth and metastasis by down-regulating E2F1, improving patient survival.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • Aberrant expression of G protein gamma 7 (GNG7) is observed in various malignant tumors.
  • The specific role of GNG7 in lung adenocarcinoma (LUAD) remains to be fully elucidated.

Purpose of the Study:

  • To investigate the antitumor function of GNG7 in lung adenocarcinoma (LUAD) cells.
  • To determine the correlation between GNG7 expression levels and patient survival in LUAD.

Main Methods:

  • Western blot and immunohistochemical analysis to assess GNG7 protein levels in LUAD tissues.
  • In vitro assays (CCK-8, EdU, Transwell) to evaluate cell proliferation, migration, and invasion.
  • In vivo studies using xenograft models in nude mice.

Main Results:

  • GNG7 was found to be significantly down-regulated in LUAD tissues, correlating with poorer patient survival.
  • GNG7 overexpression suppressed LUAD cell proliferation, migration, and invasion in vitro.
  • E2F1 overexpression counteracted the inhibitory effects of GNG7.
  • GNG7 suppressed tumor growth in vivo xenograft models.

Conclusions:

  • GNG7 functions as a tumor suppressor in lung adenocarcinoma.
  • GNG7 exerts its antitumor effects by inhibiting E2F1 activity.
  • GNG7 down-regulation is associated with adverse outcomes in LUAD patients.
Keywords:
E2F1GNG7Lung adenocarcinoma

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