Breast Cancer Metastasis Suppressor 1 (BRMS1) Forms Complexes with Retinoblastoma-binding Protein 1 (RBP1) and the mSin3 Histone Deacetylase Complex and Represses Transcription

William J. Meehan, Rajeev S. Samant, James E. Hopper, Michael J. Carrozza, Lalita A. Shevde, Jerry L. Workman, Kristin Eckert, Michael Verderame, Danny R. Welch

Research output: Contribution to journalArticle

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Abstract

Breast cancer metastasis suppressor 1 (BRMS1) suppresses metastasis of multiple human and murine cancer cells without inhibiting tumorigenicity. By yeast two-hybrid and co-immunoprecipitation, BRMS1 interacts with retinoblastoma binding protein 1 and at least seven members of the mSin3 histone deacetylase (HDAC) complex in human breast and melanoma cell lines. BRMS1 co-immunoprecipitates enzymatically active HDAC proteins and represses transcription when recruited to a Gal4 promoter in vivo. BRMS1 exists in large mSin3 complex(es) of ∼1.4-1.9 MDa, but also forms smaller complexes with HDAC1. Deletion analyses show that the carboxyl-terminal 42 amino acids of BRMS1 are not critical for interaction with much of the mSin3 complex and that BRMS1 appears to have more than one binding point to the complex. These results further show that BRMS1 may participate in transcriptional regulation via interaction with the mSin3·HDAC complex and suggest a novel mechanism by which BRMS1 might suppress cancer metastasis.

Original languageEnglish (US)
Pages (from-to)1562-1569
Number of pages8
JournalJournal of Biological Chemistry
Volume279
Issue number2
DOIs
StatePublished - Jan 9 2004

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Retinoblastoma-Binding Protein 1
Histone Deacetylases
Transcription
Cells
Breast Neoplasms
Neoplasm Metastasis
Yeast
Amino Acids
Proteins

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Molecular Biology
  • Cell Biology

Cite this

Meehan, William J. ; Samant, Rajeev S. ; Hopper, James E. ; Carrozza, Michael J. ; Shevde, Lalita A. ; Workman, Jerry L. ; Eckert, Kristin ; Verderame, Michael ; Welch, Danny R. / Breast Cancer Metastasis Suppressor 1 (BRMS1) Forms Complexes with Retinoblastoma-binding Protein 1 (RBP1) and the mSin3 Histone Deacetylase Complex and Represses Transcription. In: Journal of Biological Chemistry. 2004 ; Vol. 279, No. 2. pp. 1562-1569.
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Breast Cancer Metastasis Suppressor 1 (BRMS1) Forms Complexes with Retinoblastoma-binding Protein 1 (RBP1) and the mSin3 Histone Deacetylase Complex and Represses Transcription. / Meehan, William J.; Samant, Rajeev S.; Hopper, James E.; Carrozza, Michael J.; Shevde, Lalita A.; Workman, Jerry L.; Eckert, Kristin; Verderame, Michael; Welch, Danny R.

In: Journal of Biological Chemistry, Vol. 279, No. 2, 09.01.2004, p. 1562-1569.

Research output: Contribution to journalArticle

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AU - Shevde, Lalita A.

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AU - Welch, Danny R.

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AB - Breast cancer metastasis suppressor 1 (BRMS1) suppresses metastasis of multiple human and murine cancer cells without inhibiting tumorigenicity. By yeast two-hybrid and co-immunoprecipitation, BRMS1 interacts with retinoblastoma binding protein 1 and at least seven members of the mSin3 histone deacetylase (HDAC) complex in human breast and melanoma cell lines. BRMS1 co-immunoprecipitates enzymatically active HDAC proteins and represses transcription when recruited to a Gal4 promoter in vivo. BRMS1 exists in large mSin3 complex(es) of ∼1.4-1.9 MDa, but also forms smaller complexes with HDAC1. Deletion analyses show that the carboxyl-terminal 42 amino acids of BRMS1 are not critical for interaction with much of the mSin3 complex and that BRMS1 appears to have more than one binding point to the complex. These results further show that BRMS1 may participate in transcriptional regulation via interaction with the mSin3·HDAC complex and suggest a novel mechanism by which BRMS1 might suppress cancer metastasis.

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