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Föcking M, Dicker P, Lopez LM, Hryniewiecka M, Wynne K, English JA, Cagney G, Cotter DR. Proteomic analysis of the postsynaptic density implicates synaptic function and energy pathways in bipolar disorder. Transl Psychiatry 2016; 6:e959. [PMID: 27898073 PMCID: PMC5290351 DOI: 10.1038/tp.2016.224] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Revised: 09/26/2016] [Accepted: 09/28/2016] [Indexed: 12/17/2022] Open
Abstract
The postsynaptic density (PSD) contains a complex set of proteins of known relevance to neuropsychiatric disorders such as schizophrenia and bipolar disorder. We enriched for this anatomical structure in the anterior cingulate cortex of 16 bipolar disorder samples and 20 controls from the Stanley Medical Research Institute. Unbiased shotgun proteomics incorporating label-free quantitation was used to identify differentially expressed proteins. Quantitative investigation of the PSD identified 2033 proteins, among which 288 were found to be differentially expressed. Validation of expression changes of DNM1, DTNA, NDUFV2, SEPT11 and SSBP was performed by western blotting. Bioinformatics analysis of the differentially expressed proteins implicated metabolic pathways including mitochondrial function, the tricarboxylic acid cycle, oxidative phosphorylation, protein translation and calcium signaling. The data implicate PSD-associated proteins, and specifically mitochondrial function in bipolar disorder. They relate synaptic function in bipolar disorder and the energy pathways that underpin it. Overall, our findings add to a growing literature linking the PSD and mitochondrial function in psychiatric disorders generally, and suggest that mitochondrial function associated with the PSD is particularly important in bipolar disorder.
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Affiliation(s)
- M Föcking
- Department of Psychiatry, Royal College of Surgeons in Ireland, Education and Research Centre, Beaumont Hospital, Dublin, Ireland,Department of Psychiatry, Royal College of Surgeons in Ireland, Education and Research Centre, Education and Research Centre, Dublin 9, Ireland. E-mail: or
| | - P Dicker
- Departments of Epidemiology and Public Health, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - L M Lopez
- Department of Psychiatry, Royal College of Surgeons in Ireland, Education and Research Centre, Beaumont Hospital, Dublin, Ireland
| | - M Hryniewiecka
- Department of Psychiatry, Royal College of Surgeons in Ireland, Education and Research Centre, Beaumont Hospital, Dublin, Ireland
| | - K Wynne
- Proteome Research Centre, UCD Conway Institute of Biomolecular and Biomedical Research, School of Medicine and Medical Sciences, University College Dublin, Dublin, Ireland
| | - J A English
- Department of Psychiatry, Royal College of Surgeons in Ireland, Education and Research Centre, Beaumont Hospital, Dublin, Ireland
| | - G Cagney
- Proteome Research Centre, UCD Conway Institute of Biomolecular and Biomedical Research, School of Medicine and Medical Sciences, University College Dublin, Dublin, Ireland
| | - D R Cotter
- Department of Psychiatry, Royal College of Surgeons in Ireland, Education and Research Centre, Beaumont Hospital, Dublin, Ireland,Department of Psychiatry, Beaumont Hospital, Dublin, Ireland,Department of Psychiatry, Royal College of Surgeons in Ireland, Education and Research Centre, Education and Research Centre, Dublin 9, Ireland. E-mail: or
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de Jesus JR, Pessôa GDS, Sussulini A, Martínez JLC, Arruda MAZ. Proteomics strategies for bipolar disorder evaluation: From sample preparation to validation. J Proteomics 2016; 145:187-196. [PMID: 27113133 DOI: 10.1016/j.jprot.2016.04.034] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2016] [Revised: 04/19/2016] [Accepted: 04/20/2016] [Indexed: 02/06/2023]
Abstract
Bipolar disorder (BD) is a complex and costly psychiatric disorder, which affects one hundred million people worldwide. Due to its heterogeneity, correct BD diagnosis is still a challenge. In order to overcome this issue, different bioanalytical strategies have been proposed in the literature recently. Among these strategies, proteomic approaches have arisen as some of the most promising in the area. Thus, recent applications suggest protein profiles to further refine the proteome of BD as well as the discovery of novel protein biomarkers to facilitate diagnostics. In this review, the state-of-art of proteomic research in BD is summarized. Furthermore, important aspects of proteomics for understanding of BD, such as sample type and size, sampling, sample preparation, gel-based and gel-free proteomics, proteomic quantitative and protein validation are overviewed.
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Affiliation(s)
- Jemmyson Romário de Jesus
- Spectrometry, Sample Preparation and Mechanization Group, GEPAM, University of Campinas (UNICAMP), Campinas, Brazil; National Institute of Science and Technology for Bioanalytics, University of Campinas (UNICAMP), Campinas, Brazil; UCIBIO-REQUIMTE, Chemistry Department, Faculty of Sciences and Technology, Universidade Nova de Lisboa, Caparica, Portugal
| | - Gustavo de Souza Pessôa
- Spectrometry, Sample Preparation and Mechanization Group, GEPAM, University of Campinas (UNICAMP), Campinas, Brazil; National Institute of Science and Technology for Bioanalytics, University of Campinas (UNICAMP), Campinas, Brazil
| | - Alessandra Sussulini
- Spectrometry, Sample Preparation and Mechanization Group, GEPAM, University of Campinas (UNICAMP), Campinas, Brazil; National Institute of Science and Technology for Bioanalytics, University of Campinas (UNICAMP), Campinas, Brazil
| | - José Luis Capelo Martínez
- UCIBIO-REQUIMTE, Chemistry Department, Faculty of Sciences and Technology, Universidade Nova de Lisboa, Caparica, Portugal; ProteoMass Scientific Society, MadanPark, Rua dos Inventores s/n, Monte de Caparica, Caparica, Portugal
| | - Marco Aurélio Zezzi Arruda
- Spectrometry, Sample Preparation and Mechanization Group, GEPAM, University of Campinas (UNICAMP), Campinas, Brazil; National Institute of Science and Technology for Bioanalytics, University of Campinas (UNICAMP), Campinas, Brazil.
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