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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...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Blackwell Publishing Ltd
2011
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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. |
format | Online Article Text |
id | pubmed-3922676 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2011 |
publisher | Blackwell Publishing Ltd |
record_format | MEDLINE/PubMed |
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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