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Identification of a novel promyelocytic leukemia zinc-finger isoform required for colorectal cancer cell growth and survival

Byline: Christine Jones, Stephanie St-Jean, Isabelle Frechette, Danny Bergeron, Nathalie Rivard, Francois Boudreau Keywords: PLZF; colorectal cancer; cytoskeleton; cell growth; apoptosis Promyelocytic leukemia zinc-finger (PLZF) is a transcriptional repressor that regulates proliferation, differenti... Full description

Journal Title: International Journal of Cancer July, 2013, Vol.133(1), p.58(9)
Main Author: Jones, Christine
Other Authors: St - Jean, Stephanie , Frechette, Isabelle , Bergeron, Danny , Rivard, Nathalie , Boudreau, Francois
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: ISSN: 0020-7136
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recordid: gale_ofa327176453
title: Identification of a novel promyelocytic leukemia zinc-finger isoform required for colorectal cancer cell growth and survival
format: Article
creator:
  • Jones, Christine
  • St - Jean, Stephanie
  • Frechette, Isabelle
  • Bergeron, Danny
  • Rivard, Nathalie
  • Boudreau, Francois
subjects:
  • Colorectal Cancer -- Diet Therapy
  • Leukemia -- Diet Therapy
ispartof: International Journal of Cancer, July, 2013, Vol.133(1), p.58(9)
description: Byline: Christine Jones, Stephanie St-Jean, Isabelle Frechette, Danny Bergeron, Nathalie Rivard, Francois Boudreau Keywords: PLZF; colorectal cancer; cytoskeleton; cell growth; apoptosis Promyelocytic leukemia zinc-finger (PLZF) is a transcriptional repressor that regulates proliferation, differentiation and apoptosis among various cellular origins. PLZF expression is upregulated in colorectal cancer cell lines but its putative functional role in this context is unknown. Here, we report the identification of a novel p65 PLZF isoform that results from the usage of an evolutionarily conserved alternative translational initiation site. This isoform is devoid of the classical BTB/POZ domain required for nuclear localization and transcriptional repression. Depletion of p65 PLZF expression in colorectal cancer cell lines results in reduction of cell growth, loss of cell anchorage and increase in cell apoptosis. Overall, these results indicate that p65 PLZF is crucial to maintain colorectal cancer cell adhesion as well as survival and must occur independently of the traditionally viewed transcriptional role of PLZF in the course of these biological processes. Author Affiliation:
language: English
source:
identifier: ISSN: 0020-7136
fulltext: fulltext
issn:
  • 0020-7136
  • 00207136
url: Link


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titleIdentification of a novel promyelocytic leukemia zinc-finger isoform required for colorectal cancer cell growth and survival
creatorJones, Christine ; St - Jean, Stephanie ; Frechette, Isabelle ; Bergeron, Danny ; Rivard, Nathalie ; Boudreau, Francois
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descriptionByline: Christine Jones, Stephanie St-Jean, Isabelle Frechette, Danny Bergeron, Nathalie Rivard, Francois Boudreau Keywords: PLZF; colorectal cancer; cytoskeleton; cell growth; apoptosis Promyelocytic leukemia zinc-finger (PLZF) is a transcriptional repressor that regulates proliferation, differentiation and apoptosis among various cellular origins. PLZF expression is upregulated in colorectal cancer cell lines but its putative functional role in this context is unknown. Here, we report the identification of a novel p65 PLZF isoform that results from the usage of an evolutionarily conserved alternative translational initiation site. This isoform is devoid of the classical BTB/POZ domain required for nuclear localization and transcriptional repression. Depletion of p65 PLZF expression in colorectal cancer cell lines results in reduction of cell growth, loss of cell anchorage and increase in cell apoptosis. Overall, these results indicate that p65 PLZF is crucial to maintain colorectal cancer cell adhesion as well as survival and must occur independently of the traditionally viewed transcriptional role of PLZF in the course of these biological processes. Author Affiliation:
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titleIdentification of a novel promyelocytic leukemia zinc-finger isoform required for colorectal cancer cell growth and survival.
descriptionByline: Christine Jones, Stephanie St-Jean, Isabelle Frechette, Danny Bergeron, Nathalie Rivard, Francois Boudreau Keywords: PLZF; colorectal cancer; cytoskeleton; cell growth; apoptosis Promyelocytic leukemia zinc-finger (PLZF) is a transcriptional repressor that regulates proliferation, differentiation and apoptosis among various cellular origins. PLZF expression is upregulated in colorectal cancer cell lines but its putative functional role in this context is unknown. Here, we report the identification of a novel p65 PLZF isoform that results from the usage of an evolutionarily conserved alternative translational initiation site. This isoform is devoid of the classical BTB/POZ domain required for nuclear localization and transcriptional repression. Depletion of p65 PLZF expression in colorectal cancer cell lines results in reduction of cell growth, loss of cell anchorage and increase in cell apoptosis. Overall, these results indicate that p65 PLZF is crucial to maintain colorectal cancer cell adhesion as well as survival and must occur independently of the traditionally viewed transcriptional role of PLZF in the course of these biological processes. Author Affiliation:
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titleIdentification of a novel promyelocytic leukemia zinc-finger isoform required for colorectal cancer cell growth and survival.
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abstractByline: Christine Jones, Stephanie St-Jean, Isabelle Frechette, Danny Bergeron, Nathalie Rivard, Francois Boudreau Keywords: PLZF; colorectal cancer; cytoskeleton; cell growth; apoptosis Promyelocytic leukemia zinc-finger (PLZF) is a transcriptional repressor that regulates proliferation, differentiation and apoptosis among various cellular origins. PLZF expression is upregulated in colorectal cancer cell lines but its putative functional role in this context is unknown. Here, we report the identification of a novel p65 PLZF isoform that results from the usage of an evolutionarily conserved alternative translational initiation site. This isoform is devoid of the classical BTB/POZ domain required for nuclear localization and transcriptional repression. Depletion of p65 PLZF expression in colorectal cancer cell lines results in reduction of cell growth, loss of cell anchorage and increase in cell apoptosis. Overall, these results indicate that p65 PLZF is crucial to maintain colorectal cancer cell adhesion as well as survival and must occur independently of the traditionally viewed transcriptional role of PLZF in the course of these biological processes. Author Affiliation:
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