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Updated: Feb 10, 2026
Electrochemotherapy of Tumours
Published on: December 15, 2008
The role of Pdcd4 in tumour suppression and protein translation
Qing Wang1, Hsin-Sheng Yang1,2
1Department of Toxicology and Cancer Biology, College of Medicine, University of Kentucky, Lexington, KY, USA.
Abstract:
Programmed cell death 4 (Pdcd4), a tumour suppressor, is frequently down-regulated in various types of cancer. Pdcd4 has been demonstrated to efficiently suppress tumour promotion, progression and proliferation. The biochemical function of Pdcd4 is a protein translation inhibitor. Although the fact that Pdcd4 inhibits protein translation has been known for more than a decade, the mechanism by which Pdcd4 controls tumorigenesis through translational regulation of its target genes is still not fully understood. Recent studies show that Pdcd4 inhibits translation of stress-activated-protein kinase interacting protein 1 to suppress tumour invasion, depicting a picture of how Pdcd4 inhibits tumorigenesis through translational inhibition. Thus, understanding the mechanism of how Pdcd4 attenuates tumorigenesis by translational control should provide a new strategy for combating cancer.
Insights
Programmed cell death 4 (Pdcd4) suppresses tumors by inhibiting protein translation. Understanding how Pdcd4 regulates target genes offers new cancer treatment strategies.
Area of Science:
- Oncology
- Molecular Biology
- Biochemistry
Background:
- Programmed cell death 4 (Pdcd4) is a tumor suppressor frequently downregulated in cancers.
- Pdcd4 inhibits tumor promotion, progression, and proliferation.
- Pdcd4's function as a protein translation inhibitor is established.
Purpose of the Study:
- To elucidate the mechanism by which Pdcd4 controls tumorigenesis via translational regulation of target genes.
- To understand how Pdcd4 attenuates cancer development through translational control.
Main Methods:
- Investigated Pdcd4's role in tumor suppression.
- Analyzed Pdcd4's translational inhibition activity.
- Examined the translational regulation of Pdcd4 target genes, such as stress-activated-protein kinase interacting protein 1.
Main Results:
- Pdcd4 suppresses tumor invasion by inhibiting the translation of stress-activated-protein kinase interacting protein 1.
- This study provides insights into Pdcd4's mechanism of action in controlling tumorigenesis.
Conclusions:
- Understanding Pdcd4's translational control mechanisms can lead to novel cancer combating strategies.
- Targeting Pdcd4's translational regulation may offer a new therapeutic avenue for cancer treatment.
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