Related Experiment Video
Updated: Jan 25, 2026

An Orthotopic Murine Model of Human Prostate Cancer Metastasis
Published on: September 18, 2013
[Citron Rho-interacting serine/threonine kinase knockdown suppresses prostate cancer cell proliferation and
Chen Haiping1,2, Xiang Qi2, Liu Dawei2
1Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China.
Objective:
Citron Rho-interacting serine/threonine kinase (CIT) was identified recently as an oncogene involved in the progression of various malignant tumors, but its role in prostate cancer (PCa) remains unclear. In this study, we aimed to investigate the biological functions of CIT in PCa.
Methods:
We analyzed the expression of CIT in PCa tissues and its clinical correlations based on the Cancer Genome Atlas (TCGA) and Memorial Sloan-Kettering Cancer Center (MSKCC) dataset. We then examined the effects of RNA interference-mediated CIT silencing on the proliferation, migration and invasion of PC-3 cells using cell counting kit-8, wound healing assay and Transwell assay. We also investigated the effect of CIT silencing on epithelial-mesenchymal transition (EMT) and Hippo-Yap signaling pathway in the cells using Western blotting.
Results:
CIT expression was significantly elevated in PCa tissues from TCGA cohort (P < 0.05). MSKCC dataset analysis showed that an elevated expression of CIT was significantly correlated with N stage (P=0.001), distant metastasis (P < 0.001), Gleason score (P=0.010) and PSA (P=0.004). In cultured PC-3 cells, knockdown of CIT significantly inhibited cell proliferation, migration and invasion, reversed the EMT phenotype and decreased the expression and activity of YAP.
Conclusions:
CIT might function as an oncogene in PCa by modulating the Hippo-YAP signaling pathway and serve as a candidate therapeutic target for PCa.
Insights
Citron Rho-interacting serine/threonine kinase (CIT) promotes prostate cancer (PCa) progression by influencing cell proliferation, migration, and invasion. Targeting CIT may offer a new therapeutic strategy for PCa by modulating the Hippo-YAP pathway.
Area of Science:
- Oncology
- Molecular Biology
- Cancer Genetics
Background:
- Citron Rho-interacting serine/threonine kinase (CIT) is an identified oncogene in various cancers.
- The specific role of CIT in prostate cancer (PCa) progression and its underlying mechanisms are not well understood.
Purpose of the Study:
- To investigate the biological functions and clinical significance of CIT in prostate cancer.
- To explore the potential of CIT as a therapeutic target for PCa.
Main Methods:
- Analysis of CIT expression in PCa tissues utilizing TCGA and MSKCC datasets.
- Assessment of CIT's clinical correlations with staging, metastasis, Gleason score, and PSA levels.
- In vitro studies involving RNA interference-mediated CIT silencing in PC-3 cells to evaluate proliferation, migration, invasion, epithelial-mesenchymal transition (EMT), and Hippo-Yap signaling pathway activity via Western blotting.
Main Results:
- Significantly elevated CIT expression was observed in PCa tissues.
- Higher CIT expression correlated with advanced N stage, distant metastasis, higher Gleason score, and elevated PSA levels.
- CIT knockdown in PC-3 cells suppressed proliferation, migration, and invasion, reversed EMT, and reduced YAP expression and activity.
Conclusions:
- CIT acts as an oncogene in prostate cancer, potentially by regulating the Hippo-YAP signaling pathway.
- CIT represents a promising candidate for targeted therapy in PCa treatment.
More Related Videos
Related Concept Videos
Protein Kinases and Phosphatases
Protein kinases
Many proteins in the cell are regulated by phosphorylation, the addition of a phosphate group. A family of enzymes called kinases...
cAMP-dependent Protein Kinase Pathways
Cell Polarization by Rho Proteins
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...
Small GTPases - Ras and Rho
Three regulatory proteins control their activity:
C4 Pathway and CAM
C4 Pathway
The C4 pathway is used by plants such as...

