Identification of PSMD2 as a promising biomarker for pancreatic cancer patients based on comprehensive bioinformatics and in vitro studies
- Xiuxue Feng 1, Qiang Liu 2, Huikai Li 1, Jing Yang 3, Enqiang Linghu 1
- Xiuxue Feng 1, Qiang Liu 2, Huikai Li 1
- 1Senior Department of Gastroenterology, The First Medical Center of Chinese PLA General Hospital, Beijing, China.
- 2Syngentech Inc., Beijing, China.
- 3Laboratory of Nuclear and Radiation Injury, Medical Innovation Research Division of Chinese PLA General Hospital, State Key Laboratory of Experimental Hematology, Beijing, China.
- 0Senior Department of Gastroenterology, The First Medical Center of Chinese PLA General Hospital, Beijing, China.
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View abstract on PubMed
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.
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