Programmed cell death 4 (PDCD4) is a newly described tumour suppressor that inhibits oncogenesis by suppressing gene transcription and translation. Loss of PDCD4 expression has been found in several types of human cancers including the most common cancer of the brain, the gliomas. However, the molecular mechanisms responsible for PDCD4 gene silencing in tumour cells remain unclear. Here we repo...

BACKGROUND Programmed cell death 4 (Pdcd4) is a tumor suppressor frequently lost in tumors of various origins thus contributing to tumor progression. Expression of Pdcd4 in melanoma, however, has not been extensively studied to date. MATERIALS AND METHODS Pdcd4 protein levels were assessed in 23 human melanoma cell lines and in normal melanocytes by western blot analysis. Also, effects of LY2...

Pdcd4 (programmed cell death 4) has received considerable attention as a tumor suppressor protein in recent years, however, its molecular function is still poorly understood. Pdcd4 is a nuclear-cytoplasmic shuttling and RNA-binding protein, which is involved in the control of translation of specific mRNAs. Pdcd4 interacts with the eukaryotic translation initiation factor eIF4A, an RNA helicase ...

Programmed cell death 4 (PDCD4) is one multi-functional tumor suppressor inhibiting neoplastic transformation and tumor invasion. The role of PDCD4 in tumorigenesis has attracted more attention and has been systematically elucidated in cutaneous tumors. However, the normal biological function of PDCD4 in skin is still unclear. In this study, for the first time, we find that tumor suppressor PDC...

Prostate cancer is the most common cancer among men in the Unites States. The cytokine IL-6 activates several prostate cancer pathways, but its upstream trans-signaling pathway remains poorly understood. In this study, we evaluated the role of IL-6 in PDCD4 gene expression and how the microRNA miR-21 regulates this process in prostate cancer cell lines PC-3 and LNCaP. The expression pattern of ...

Programmed cell death-4 (PDCD4) is a recently discovered tumor suppressor protein that inhibits protein synthesis by suppression of translation initiation. We investigated the role and the regulation of PDCD4 in the terminal differentiation of acute myeloid leukemia (AML) cells. Expression of PDCD4 was markedly up-regulated during all-trans retinoic acid (ATRA)-induced granulocytic differentiat...

Programmed cell death 4 (PDCD4) is a novel tumor suppressor gene and a promising target for anticancer therapies. PDCD4 is frequently downregulated in various human cancers; however, the molecular mechanism accounting for the loss expression of PDCD4 in cancers is not fully understood. In this study, we identified specific targeting sites for miR-208a-3p in the 3'-untranslated region (3'-UTR) o...

Eukaryotic initiation factor (eIF) 4A unwinds secondary and tertiary structures in the 5'-untranslated region of mRNA, permitting translation initiation. Programmed cell death 4 (Pdcd4) is a novel transformation suppressor and eIF4A-binding partner that inhibits eIF4A helicase activity and translation. To elucidate the regions of eIF4A that are functionally significant in binding to Pdcd4, we g...

Programmed cell death 4 (PDCD4), as a tumor suppressor gene, is frequently reduced in a variety of tumors, including gastric cancer. Previous findings have indicated that PDCD4 participates in tumorigenesis through the regulation of apoptosis, but the molecular basis of this process has not been fully elucidated, and no studies have shown the upstream regulation of this gene in gastric cancer. ...

Programmed cell death 4 (PDCD4) is a tumor suppressor, and it inhibits tumor progression and metastasis. Even though down-regulation of PDCD4 has been implicated with many different types of human cancers, its roles in the progression of cervical cancer remain unexplored. Here, we have systematically examined the expression pattern of PDCD4 in cervical tissues. 15 cervical normal tissues, 14 ce...