Identification of PSMD2 as a promising biomarker for pancreatic cancer patients based on comprehensive bioinformatics and in vitro studies

  • 0Senior Department of Gastroenterology, The First Medical Center of Chinese PLA General Hospital, Beijing, China.

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Summary

This summary is machine-generated.

Proteasome 26S subunit, non-ATPases (PSMDs) are upregulated in pancreatic cancer. PSMD2 drives tumor growth by activating the AKT/mTOR pathway, suggesting it may predict response to AKT inhibitors.

Area Of Science

  • Oncology
  • Molecular Biology
  • Biochemistry

Background

  • Pancreatic cancer has limited treatment options and a poor prognosis.
  • Dysregulation of proteasome 26S subunit, non-ATPases (PSMDs) is implicated in various cancers.
  • The role of PSMDs in pancreatic cancer remains poorly understood.

Purpose Of The Study

  • To explore the therapeutic potential of PSMDs in pancreatic cancer.
  • To investigate the prognostic value of PSMDs in pancreatic cancer.
  • To elucidate the functional role of PSMD2 and PSMD14 in pancreatic cancer.

Main Methods

  • TCGA database analysis of PSMD expression in pancreatic cancer.
  • Prognostic value assessment using Cox regression and Kaplan-Meier analyses.
  • Functional studies including gene knockdown/overexpression and pathway analysis (AKT/mTOR).

Main Results

  • Most PSMDs, notably PSMD2 and PSMD14, were upregulated in pancreatic cancer tissues and associated with worse prognosis.
  • PSMD2 overexpression promoted pancreatic cancer cell growth, apoptosis resistance, and gemcitabine resistance by activating the AKT/mTOR pathway.
  • PSMD2 expression correlated with immune checkpoint genes but not immune cell infiltration.

Conclusions

  • PSMD2 acts as a tumor-promoting protein in pancreatic cancer via AKT/mTOR pathway activation.
  • PSMD2 overexpression is a potential biomarker for predicting response to AKT inhibitor therapy in pancreatic cancer patients.