Related Experiment Video
Updated: May 20, 2025

Gene Regulation and Targeted Therapy in Gastric Cancer Peritoneal Metastasis: Radiological Findings from Dual Energy CT and PET/CT
Published on: January 22, 2018
Effect of PRKD3 on cell cycle in gastric cancer progression and downstream regulatory networks
Shuaiyang Wang1,2, Bei Xie3, Haohua Deng1,2
1Department of Clinical Laboratory Center, Lanzhou University Second Hospital, Lanzhou, 730000, Gansu, China.
Abstract:
Protein kinase D3 (PRKD3), belonging to the protein kinase D family, significantly influences tumor development and progression. The role of PRKD3 in advancing gastric cancer (GC) and its effects on the cell cycle are not well understood, necessitating detailed investigation. Assessment of PRKD3 expression in both malignant and normal gastric tissues was performed using bioinformatics databases. The influence of PRKD3 on GC's malignant characteristics was evaluated through in vitro experiments utilizing cell line models of GC. Additionally, proteomic analyses were conducted to investigate the potential mechanisms of PRKD3 in GC progression. PRKD3 was notably overexpressed in GC tissues, correlating with adverse outcomes for patients. PRKD3 knockdown impaired GC cell malignancy, manifesting as a 2.12-fold decline in proliferation(p < 0.01), 2.64-fold suppression of migration(p < 0.01), 2.16-fold inhibition of invasion(p < 0.01), and G2/M phase arrest. Proteomic and Western blot analyses had revealed a substantial enrichment in differentially expressed proteins (DEPs) associated with tumor-related signaling pathways, including FoxO and p53, which was paralleled by significant alterations in the levels of key cell cycle proteins such as CDK1, CyclinB1, CHK1 and PLK1, with a 6.8-fold elevation in CHK1 levels(p < 0.05). The overexpression of PRKD3 was intricately linked with the aggressive behaviors of GC. Targeting PRKD3 activity offers potential for effective treatments of GC.
Insights
Protein kinase D3 (PRKD3) is overexpressed in gastric cancer (GC), driving tumor progression and adverse patient outcomes. Inhibiting PRKD3 reduces GC malignancy and offers a potential therapeutic target for this disease.
Area of Science:
- Oncology
- Molecular Biology
- Biochemistry
Background:
- Protein kinase D3 (PRKD3) is implicated in tumor development, but its specific role in gastric cancer (GC) and cell cycle regulation remains unclear.
- Understanding PRKD3's function is crucial for developing targeted GC therapies.
Purpose of the Study:
- To investigate the role of PRKD3 in gastric cancer progression and its impact on the cell cycle.
- To identify potential therapeutic strategies targeting PRKD3 in GC.
Main Methods:
- Bioinformatic analysis of PRKD3 expression in GC tissues.
- In vitro experiments using GC cell lines to assess the effects of PRKD3 knockdown on malignancy.
- Proteomic and Western blot analyses to elucidate PRKD3's molecular mechanisms.
Main Results:
- PRKD3 was significantly overexpressed in GC tissues, correlating with poor patient prognosis.
- PRKD3 knockdown suppressed GC cell proliferation, migration, and invasion, inducing G2/M phase arrest.
- Proteomic analysis revealed PRKD3 affects cell cycle proteins (CDK1, CyclinB1, CHK1, PLK1) and signaling pathways (FoxO, p53).
Conclusions:
- PRKD3 overexpression is linked to aggressive GC behaviors and poor outcomes.
- Targeting PRKD3 presents a promising therapeutic avenue for gastric cancer treatment.
More Related Videos
Related Concept Videos
Inhibition of Cdk Activity
Negative Regulator Molecules
Interactions Between Signaling Pathways
Convergence and divergence, and cross-talk between signaling pathways
Two distinct signaling pathways can converge on a single functional unit, which may either be a single protein or a complex of proteins. The response is either functionally distinct or synergistic between the two pathways but different from the response...
mTOR Signaling and Cancer Progression
The mTOR pathway or the...
Molecular Factors Affecting Cell Division
Several proteins function as internal regulators to ensure each cell cycle stage is completed faithfully before proceeding to the next. Regulator molecules may act directly or influence the activity or production of other...
Tumor Progression
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...

