Néstor-Guillermo Progeria Syndrome: a biochemical insight into Barrier-to-Autointegration Factor 1, alanine 12 threonine mutation

Paquet, Nicolas, Box, Joseph K, Ashton, Nicholas W., Suraweera, Amila, Croft, Laura V, Urquhart, Aaron J., Bolderson, Emma, Zhang, Shu-Dong, O’Byrne, Kenneth J., & Richard, Derek J. (2014) Néstor-Guillermo Progeria Syndrome: a biochemical insight into Barrier-to-Autointegration Factor 1, alanine 12 threonine mutation. BMC Molecular Biology, 15, Article number-27.

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Abstract

Background

  • Premature aging syndromes recapitulate many aspects of natural aging and provide an insight into this phenomenon at a molecular and cellular level. The progeria syndromes appear to cause rapid aging through disruption of normal nuclear structure. Recently, a coding mutation (c.34G > A [p.A12T]) in the Barrier to Autointegration Factor 1 (BANF1) gene was identified as the genetic basis of Néstor-Guillermo Progeria syndrome (NGPS). This mutation was described to cause instability in the BANF1 protein, causing a disruption of the nuclear envelope structure.

Results

  • Here we demonstrate that the BANF1 A12T protein is indeed correctly folded, stable and that the observed phenotype, is likely due to the disruption of the DNA binding surface of the A12T mutant. We demonstrate, using biochemical assays, that the BANF1 A12T protein is impaired in its ability to bind DNA while its interaction with nuclear envelope proteins is unperturbed. Consistent with this, we demonstrate that ectopic expression of the mutant protein induces the NGPS cellular phenotype, while the protein localizes normally to the nuclear envelope.

Conclusions

  • Our study clarifies the role of the A12T mutation in NGPS patients, which will be of importance for understanding the development of the disease.

Impact and interest:

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ID Code: 82567
Item Type: Journal Article
Refereed: Yes
Keywords: progeria, nuclear envelope, aging
DOI: 10.1186/s12867-014-0027-z
ISSN: 1471-2199
Divisions: Current > Schools > School of Biomedical Sciences
Current > QUT Faculties and Divisions > Faculty of Health
Funding:
Copyright Owner: 2014 Paquet et al.; licensee BioMed Central Ltd
Copyright Statement: This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.
Deposited On: 19 Mar 2015 01:51
Last Modified: 18 Nov 2016 01:47

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