Cargando…
Dysbindin-1, a Schizophrenia-Related Protein, Functionally Interacts with the DNA- Dependent Protein Kinase Complex in an Isoform-Dependent Manner
DTNBP1 has been recognized as a schizophrenia susceptible gene, and its protein product, dysbindin-1, is down-regulated in the brains of schizophrenic patients. However, little is known about the physiological role of dysbindin-1 in the central nervous system. We hypothesized that disruption of dysb...
Autores principales: | , , , , , |
---|---|
Formato: | Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2009
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2614472/ https://www.ncbi.nlm.nih.gov/pubmed/19142223 http://dx.doi.org/10.1371/journal.pone.0004199 |
_version_ | 1782163234895167488 |
---|---|
author | Oyama, Satoko Yamakawa, Hidekuni Sasagawa, Noboru Hosoi, Yoshio Futai, Eugene Ishiura, Shoichi |
author_facet | Oyama, Satoko Yamakawa, Hidekuni Sasagawa, Noboru Hosoi, Yoshio Futai, Eugene Ishiura, Shoichi |
author_sort | Oyama, Satoko |
collection | PubMed |
description | DTNBP1 has been recognized as a schizophrenia susceptible gene, and its protein product, dysbindin-1, is down-regulated in the brains of schizophrenic patients. However, little is known about the physiological role of dysbindin-1 in the central nervous system. We hypothesized that disruption of dysbindin-1 with unidentified proteins could contribute to pathogenesis and the symptoms of schizophrenia. GST pull-down from human neuroblastoma lysates showed an association of dysbindin-1 with the DNA-dependent protein kinase (DNA-PK) complex. The DNA-PK complex interacts only with splice isoforms A and B, but not with C. We found that isoforms A and B localized in nucleus, where the kinase complex exist, whereas the isoform C was found exclusively in cytosol. Furthermore, results of phosphorylation assay suggest that the DNA-PK complex phosphorylated dysbindin-1 isoforms A and B in cells. These observations suggest that DNA-PK regulates the dysbindin-1 isoforms A and B by phosphorylation in nucleus. Isoform C does not contain exons from 1 to 6. Since schizophrenia-related single nucleotide polymorphisms (SNPs) occur in these introns between exon 1 and exon 6, we suggest that these SNPs might affect splicing of DTNBP1, which leads to impairment of the functional interaction between dysbindin-1 and DNA-PK in schizophrenic patients. |
format | Text |
id | pubmed-2614472 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2009 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-26144722009-01-14 Dysbindin-1, a Schizophrenia-Related Protein, Functionally Interacts with the DNA- Dependent Protein Kinase Complex in an Isoform-Dependent Manner Oyama, Satoko Yamakawa, Hidekuni Sasagawa, Noboru Hosoi, Yoshio Futai, Eugene Ishiura, Shoichi PLoS One Research Article DTNBP1 has been recognized as a schizophrenia susceptible gene, and its protein product, dysbindin-1, is down-regulated in the brains of schizophrenic patients. However, little is known about the physiological role of dysbindin-1 in the central nervous system. We hypothesized that disruption of dysbindin-1 with unidentified proteins could contribute to pathogenesis and the symptoms of schizophrenia. GST pull-down from human neuroblastoma lysates showed an association of dysbindin-1 with the DNA-dependent protein kinase (DNA-PK) complex. The DNA-PK complex interacts only with splice isoforms A and B, but not with C. We found that isoforms A and B localized in nucleus, where the kinase complex exist, whereas the isoform C was found exclusively in cytosol. Furthermore, results of phosphorylation assay suggest that the DNA-PK complex phosphorylated dysbindin-1 isoforms A and B in cells. These observations suggest that DNA-PK regulates the dysbindin-1 isoforms A and B by phosphorylation in nucleus. Isoform C does not contain exons from 1 to 6. Since schizophrenia-related single nucleotide polymorphisms (SNPs) occur in these introns between exon 1 and exon 6, we suggest that these SNPs might affect splicing of DTNBP1, which leads to impairment of the functional interaction between dysbindin-1 and DNA-PK in schizophrenic patients. Public Library of Science 2009-01-14 /pmc/articles/PMC2614472/ /pubmed/19142223 http://dx.doi.org/10.1371/journal.pone.0004199 Text en Oyama et al. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited. |
spellingShingle | Research Article Oyama, Satoko Yamakawa, Hidekuni Sasagawa, Noboru Hosoi, Yoshio Futai, Eugene Ishiura, Shoichi Dysbindin-1, a Schizophrenia-Related Protein, Functionally Interacts with the DNA- Dependent Protein Kinase Complex in an Isoform-Dependent Manner |
title | Dysbindin-1, a Schizophrenia-Related Protein, Functionally Interacts with the DNA- Dependent Protein Kinase Complex in an Isoform-Dependent Manner |
title_full | Dysbindin-1, a Schizophrenia-Related Protein, Functionally Interacts with the DNA- Dependent Protein Kinase Complex in an Isoform-Dependent Manner |
title_fullStr | Dysbindin-1, a Schizophrenia-Related Protein, Functionally Interacts with the DNA- Dependent Protein Kinase Complex in an Isoform-Dependent Manner |
title_full_unstemmed | Dysbindin-1, a Schizophrenia-Related Protein, Functionally Interacts with the DNA- Dependent Protein Kinase Complex in an Isoform-Dependent Manner |
title_short | Dysbindin-1, a Schizophrenia-Related Protein, Functionally Interacts with the DNA- Dependent Protein Kinase Complex in an Isoform-Dependent Manner |
title_sort | dysbindin-1, a schizophrenia-related protein, functionally interacts with the dna- dependent protein kinase complex in an isoform-dependent manner |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2614472/ https://www.ncbi.nlm.nih.gov/pubmed/19142223 http://dx.doi.org/10.1371/journal.pone.0004199 |
work_keys_str_mv | AT oyamasatoko dysbindin1aschizophreniarelatedproteinfunctionallyinteractswiththednadependentproteinkinasecomplexinanisoformdependentmanner AT yamakawahidekuni dysbindin1aschizophreniarelatedproteinfunctionallyinteractswiththednadependentproteinkinasecomplexinanisoformdependentmanner AT sasagawanoboru dysbindin1aschizophreniarelatedproteinfunctionallyinteractswiththednadependentproteinkinasecomplexinanisoformdependentmanner AT hosoiyoshio dysbindin1aschizophreniarelatedproteinfunctionallyinteractswiththednadependentproteinkinasecomplexinanisoformdependentmanner AT futaieugene dysbindin1aschizophreniarelatedproteinfunctionallyinteractswiththednadependentproteinkinasecomplexinanisoformdependentmanner AT ishiurashoichi dysbindin1aschizophreniarelatedproteinfunctionallyinteractswiththednadependentproteinkinasecomplexinanisoformdependentmanner |