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Specific regulation of low-abundance transcript variants encoding human Acyl-CoA binding protein (ACBP) isoforms

Despite intensive efforts on annotation of eukaryotic transcriptoms, little is known about the regulation of low-abundance transcripts. To address this question, we analysed the regulation of novel low-abundance transcript variants of human acyl-CoA binding protein (ACBP), an important multifunction...

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Detalles Bibliográficos
Autores principales: Nitz, Inke, Kruse, Marie-Luise, Klapper, Maja, Döring, Frank
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Blackwell Publishing Ltd 2011
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3922676/
https://www.ncbi.nlm.nih.gov/pubmed/20345851
http://dx.doi.org/10.1111/j.1582-4934.2010.01055.x
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author Nitz, Inke
Kruse, Marie-Luise
Klapper, Maja
Döring, Frank
author_facet Nitz, Inke
Kruse, Marie-Luise
Klapper, Maja
Döring, Frank
author_sort Nitz, Inke
collection PubMed
description Despite intensive efforts on annotation of eukaryotic transcriptoms, little is known about the regulation of low-abundance transcripts. To address this question, we analysed the regulation of novel low-abundance transcript variants of human acyl-CoA binding protein (ACBP), an important multifunctional housekeeping protein, which we have identified by screening of human expressed sequence tags in combination with ab initio gene prediction. By using RT-, real-time RT- and rapid amplification of cDNA ends-PCR in five human tissues, we find these transcripts, which are generated by a consequent use of alternative promoters and alternate first or first two exons, to be authentic ones. They show a tissue-specific distribution and intrinsic responsiveness to glucose and insulin. Promoter analyses of the corresponding transcripts revealed a differential regulation mediated by sterol regulatory element-binding protein-2, hepatocyte nuclear factor-4α and nuclear factor κB (NF-κB), central transcription factors of fat and glucose metabolism and inflammation. Subcellular localization studies of deduced isoforms in liver HepG2 cells showed that they are distributed in different compartments. By demonstrating that ACBP is a target of NF-κB, our findings link fatty acid metabolism with inflammation. Furthermore, our findings show that low-abundance transcripts are regulated in a similar mode than their high-abundance counterparts.
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spelling pubmed-39226762015-04-06 Specific regulation of low-abundance transcript variants encoding human Acyl-CoA binding protein (ACBP) isoforms Nitz, Inke Kruse, Marie-Luise Klapper, Maja Döring, Frank J Cell Mol Med Articles Despite intensive efforts on annotation of eukaryotic transcriptoms, little is known about the regulation of low-abundance transcripts. To address this question, we analysed the regulation of novel low-abundance transcript variants of human acyl-CoA binding protein (ACBP), an important multifunctional housekeeping protein, which we have identified by screening of human expressed sequence tags in combination with ab initio gene prediction. By using RT-, real-time RT- and rapid amplification of cDNA ends-PCR in five human tissues, we find these transcripts, which are generated by a consequent use of alternative promoters and alternate first or first two exons, to be authentic ones. They show a tissue-specific distribution and intrinsic responsiveness to glucose and insulin. Promoter analyses of the corresponding transcripts revealed a differential regulation mediated by sterol regulatory element-binding protein-2, hepatocyte nuclear factor-4α and nuclear factor κB (NF-κB), central transcription factors of fat and glucose metabolism and inflammation. Subcellular localization studies of deduced isoforms in liver HepG2 cells showed that they are distributed in different compartments. By demonstrating that ACBP is a target of NF-κB, our findings link fatty acid metabolism with inflammation. Furthermore, our findings show that low-abundance transcripts are regulated in a similar mode than their high-abundance counterparts. Blackwell Publishing Ltd 2011-04 2010-03-19 /pmc/articles/PMC3922676/ /pubmed/20345851 http://dx.doi.org/10.1111/j.1582-4934.2010.01055.x Text en © 2011 The Authors Journal of Cellular and Molecular Medicine © 2011 Foundation for Cellular and Molecular Medicine/Blackwell Publishing Ltd
spellingShingle Articles
Nitz, Inke
Kruse, Marie-Luise
Klapper, Maja
Döring, Frank
Specific regulation of low-abundance transcript variants encoding human Acyl-CoA binding protein (ACBP) isoforms
title Specific regulation of low-abundance transcript variants encoding human Acyl-CoA binding protein (ACBP) isoforms
title_full Specific regulation of low-abundance transcript variants encoding human Acyl-CoA binding protein (ACBP) isoforms
title_fullStr Specific regulation of low-abundance transcript variants encoding human Acyl-CoA binding protein (ACBP) isoforms
title_full_unstemmed Specific regulation of low-abundance transcript variants encoding human Acyl-CoA binding protein (ACBP) isoforms
title_short Specific regulation of low-abundance transcript variants encoding human Acyl-CoA binding protein (ACBP) isoforms
title_sort specific regulation of low-abundance transcript variants encoding human acyl-coa binding protein (acbp) isoforms
topic Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3922676/
https://www.ncbi.nlm.nih.gov/pubmed/20345851
http://dx.doi.org/10.1111/j.1582-4934.2010.01055.x
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