The inhibitor of cyclin-dependent kinase 4a/alternative reading frame (INK4a/ARF) locus encoded proteins p16INK4a and p19ARF repress cyclin D1 transcription through distinct cis elements

Mark D'Amico, Kongming Wu, Maofu Fu, Mahadev Rao, Chris Albanese, Robert G. Russell, Hanzhou Lian, David Bregman, Michael A. White, Richard G. Pestell

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

The Ink4a/Arf locus encodes two structurally unrelated tumor suppressor proteins, p16INK4a and p14ARF (murine p19ARF). Invariant inactivation of either the p16INK4a-cyclin D/CDK-pRb pathway and/or p53-p14ARF pathway occurs in most human tumors. Cyclin D1 is frequently overexpressed in breast cancer cells contributing an alternate mechanism inactivating the p16INK4a/pRb pathway. Targeted overexpression of cyclin D1 to the mammary gland is sufficient for tumorigenesis, and cyclin D1-/- mice are resistant to Ras-induced mammary tumors. Recent studies suggest cyclin D1 and p16INK4a expression are reciprocal in human breast cancers. Herein, reciprocal regulation of cyclin D1 and p16INK4a was observed in tissues of mice mutant for the Ink4a/Arf locus. p16INK4a and p19ARF inhibited DNA synthesis in MCF7 cells. p16INK4a repressed cyclin D1 expression and transcription. Repression of cyclin D1 by p16INK4a occurred independently of the p16INK4a-cdk4-binding function and required a cAMP-response element/activating transcription factor-2-binding site. p19 ARF repressed cyclin D1 through a novel distal cis-element at -1137, which bound p53 in chromatin-immunoprecipitation assays. Transcriptional repression of the cyclin D1 gene through distinct DNA sequences may contribute to the tumor suppressor function of the Ink4a/Arf locus.

Original languageEnglish
Pages (from-to)4122-4130
Number of pages9
JournalCancer Research
Volume64
Issue number12
DOIs
Publication statusPublished - 15-06-2004

Fingerprint

Cyclin-Dependent Kinase Inhibitor p16
Reading Frames
Cyclin-Dependent Kinases
Cyclin D1
Tumor Suppressor Protein p14ARF
Breast Neoplasms
Activating Transcription Factor 2
bcl-1 Genes
Cyclin D
Chromatin Immunoprecipitation
MCF-7 Cells
Response Elements
Human Mammary Glands
Neoplasms
Carcinogenesis
Binding Sites

All Science Journal Classification (ASJC) codes

  • Oncology
  • Cancer Research

Cite this

D'Amico, Mark ; Wu, Kongming ; Fu, Maofu ; Rao, Mahadev ; Albanese, Chris ; Russell, Robert G. ; Lian, Hanzhou ; Bregman, David ; White, Michael A. ; Pestell, Richard G. / The inhibitor of cyclin-dependent kinase 4a/alternative reading frame (INK4a/ARF) locus encoded proteins p16INK4a and p19ARF repress cyclin D1 transcription through distinct cis elements. In: Cancer Research. 2004 ; Vol. 64, No. 12. pp. 4122-4130.
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abstract = "The Ink4a/Arf locus encodes two structurally unrelated tumor suppressor proteins, p16INK4a and p14ARF (murine p19ARF). Invariant inactivation of either the p16INK4a-cyclin D/CDK-pRb pathway and/or p53-p14ARF pathway occurs in most human tumors. Cyclin D1 is frequently overexpressed in breast cancer cells contributing an alternate mechanism inactivating the p16INK4a/pRb pathway. Targeted overexpression of cyclin D1 to the mammary gland is sufficient for tumorigenesis, and cyclin D1-/- mice are resistant to Ras-induced mammary tumors. Recent studies suggest cyclin D1 and p16INK4a expression are reciprocal in human breast cancers. Herein, reciprocal regulation of cyclin D1 and p16INK4a was observed in tissues of mice mutant for the Ink4a/Arf locus. p16INK4a and p19ARF inhibited DNA synthesis in MCF7 cells. p16INK4a repressed cyclin D1 expression and transcription. Repression of cyclin D1 by p16INK4a occurred independently of the p16INK4a-cdk4-binding function and required a cAMP-response element/activating transcription factor-2-binding site. p19 ARF repressed cyclin D1 through a novel distal cis-element at -1137, which bound p53 in chromatin-immunoprecipitation assays. Transcriptional repression of the cyclin D1 gene through distinct DNA sequences may contribute to the tumor suppressor function of the Ink4a/Arf locus.",
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The inhibitor of cyclin-dependent kinase 4a/alternative reading frame (INK4a/ARF) locus encoded proteins p16INK4a and p19ARF repress cyclin D1 transcription through distinct cis elements. / D'Amico, Mark; Wu, Kongming; Fu, Maofu; Rao, Mahadev; Albanese, Chris; Russell, Robert G.; Lian, Hanzhou; Bregman, David; White, Michael A.; Pestell, Richard G.

In: Cancer Research, Vol. 64, No. 12, 15.06.2004, p. 4122-4130.

Research output: Contribution to journalArticle

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AU - D'Amico, Mark

AU - Wu, Kongming

AU - Fu, Maofu

AU - Rao, Mahadev

AU - Albanese, Chris

AU - Russell, Robert G.

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AU - Bregman, David

AU - White, Michael A.

AU - Pestell, Richard G.

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