Related Experiment Video
Updated: Nov 21, 2025

Monitoring eIF4F Assembly by Measuring eIF4E-eIF4G Interaction in Live Cells
Published on: May 1, 2020
EIF3B promotes cancer progression in pancreatic cancer
Hanzhang Zhu1,2, Yuqiang Shan3, Ke Ge1,2
1Department of Hepatopancreatobiliary Surgery, Hangzhou First People's Hospital, The Affiliated Hospital of Medical School of Zhejiang University, Hangzhou, China.
Background:
This study aimed to analyze the relative expression of Eukaryotic Translation Initiation Factor 3 Subunit B (EIF3B) in pancreatic cancer and elucidate its contribution to this disease.
Methods:
Relative expression of EIF3B in pancreatic cancer was analyzed by immunohistochemistry. Cell viability was determined by the MTT assay and cell proliferation was measured by direct cell counting. Cell apoptosis was detected by Annexin V staining followed by flow cytometry analysis, and cell cycle was analyzed by PI staining. The differential expression gene analysis was performed by microarray. Tumor progression in response to EIF3B deficiency in vivo was investigated using the xenograft tumor model.
Results:
We found aberrantly high expression of EIF3B in pancreatic cancer, which associated with unfavorable prognosis. Knockdown of EIF3B greatly compromised cell viability and proliferation in both SW1990 and PANC-1 cells. Furthermore, EIF3B deficiency induced cell cycle arrest and spontaneous apoptosis. In vivo tumor progression was significantly suppressed by EIF3B silencing in the xenograft mouse model. Mechanistically, we characterized down-regulation of CDH1 and IRS1 and up-regulation of DDIT3, PTEN and CDKN1B, in response to EIF3B knockdown, which might mediate the oncogenic effect of EIF3B in pancreatic cancer.
Conclusions:
Our data uncovered the oncogenic role of EIF3B in pancreatic cancer.
Related Concept Videos
mTOR Signaling and Cancer Progression
The mTOR pathway or the...
Role of Ephrin-Eph Signalling in Intestinal Stem Cell Renewal
Cancer Cell Migration through Invadopodia
Mitogens and the Cell Cycle
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...
The Tumor Microenvironment

