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Rampino A, Torretta S, Gelao B, Veneziani F, Iacoviello M, Marakhovskaya A, Masellis R, Andriola I, Sportelli L, Pergola G, Minelli A, Magri C, Gennarelli M, Vita A, Beaulieu JM, Bertolino A, Blasi G. Evidence of an interaction between FXR1 and GSK3β polymorphisms on levels of Negative Symptoms of Schizophrenia and their response to antipsychotics. Eur Psychiatry 2021; 64:e39. [PMID: 33866994 PMCID: PMC8260562 DOI: 10.1192/j.eurpsy.2021.26] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND Genome-Wide Association Studies (GWASs) have identified several genes associated with Schizophrenia (SCZ) and exponentially increased knowledge on the genetic basis of the disease. In addition, products of GWAS genes interact with neuronal factors coded by genes lacking association, such that this interaction may confer risk for specific phenotypes of this brain disorder. In this regard, fragile X mental retardation syndrome-related 1 (FXR1) gene has been GWAS associated with SCZ. FXR1 protein is regulated by glycogen synthase kinase-3β (GSK3β), which has been implicated in pathophysiology of SCZ and response to antipsychotics (APs). rs496250 and rs12630592, two eQTLs (Expression Quantitative Trait Loci) of FXR1 and GSK3β, respectively, interact on emotion stability and amygdala/prefrontal cortex activity during emotion processing. These two phenotypes are associated with Negative Symptoms (NSs) of SCZ suggesting that the interaction between these SNPs may also affect NS severity and responsiveness to medication. METHODS To test this hypothesis, in two independent samples of patients with SCZ, we investigated rs496250 by rs12630592 interaction on NS severity and response to APs. We also tested a putative link between APs administration and FXR1 expression, as already reported for GSK3β expression. RESULTS We found that rs496250 and rs12630592 interact on NS severity. We also found evidence suggesting interaction of these polymorphisms also on response to APs. This interaction was not present when looking at positive and general psychopathology scores. Furthermore, chronic olanzapine administration led to a reduction of FXR1 expression in mouse frontal cortex. DISCUSSION Our findings suggest that, like GSK3β, FXR1 is affected by APs while shedding new light on the role of the FXR1/GSK3β pathway for NSs of SCZ.
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Affiliation(s)
- Antonio Rampino
- Group of Psychiatric Neuroscience, Department of Basic Medical Sciences, Neuroscience and Sense Organs, University of Bari Aldo Moro, Bari, Italy.,Azienda Ospedaliero-Universitaria Consorziale Policlinico, Bari, Italy
| | - Silvia Torretta
- Group of Psychiatric Neuroscience, Department of Basic Medical Sciences, Neuroscience and Sense Organs, University of Bari Aldo Moro, Bari, Italy
| | - Barbara Gelao
- Group of Psychiatric Neuroscience, Department of Basic Medical Sciences, Neuroscience and Sense Organs, University of Bari Aldo Moro, Bari, Italy
| | - Federica Veneziani
- Group of Psychiatric Neuroscience, Department of Basic Medical Sciences, Neuroscience and Sense Organs, University of Bari Aldo Moro, Bari, Italy.,Department of Pharmacology, University of Toronto, Toronto, Ontario, Canada
| | - Matteo Iacoviello
- Group of Psychiatric Neuroscience, Department of Basic Medical Sciences, Neuroscience and Sense Organs, University of Bari Aldo Moro, Bari, Italy
| | | | - Rita Masellis
- Group of Psychiatric Neuroscience, Department of Basic Medical Sciences, Neuroscience and Sense Organs, University of Bari Aldo Moro, Bari, Italy
| | - Ileana Andriola
- Azienda Ospedaliero-Universitaria Consorziale Policlinico, Bari, Italy
| | - Leonardo Sportelli
- Group of Psychiatric Neuroscience, Department of Basic Medical Sciences, Neuroscience and Sense Organs, University of Bari Aldo Moro, Bari, Italy
| | - Giulio Pergola
- Group of Psychiatric Neuroscience, Department of Basic Medical Sciences, Neuroscience and Sense Organs, University of Bari Aldo Moro, Bari, Italy.,Lieber Institute for Brain Development, Johns Hopkins Medical Campus, Baltimore, Maryland, USA
| | - Alessandra Minelli
- Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy.,Genetics Unit, IRCCS Istituto Centro San Giovanni di Dio Fatebenefratelli, Brescia, Italy
| | - Chiara Magri
- Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
| | - Massimo Gennarelli
- Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy.,Genetics Unit, IRCCS Istituto Centro San Giovanni di Dio Fatebenefratelli, Brescia, Italy
| | - Antonio Vita
- Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy.,Department of Mental Health and Addiction Services, ASST Spedali Civili of Brescia, Brescia, Italy
| | | | - Alessandro Bertolino
- Group of Psychiatric Neuroscience, Department of Basic Medical Sciences, Neuroscience and Sense Organs, University of Bari Aldo Moro, Bari, Italy.,Azienda Ospedaliero-Universitaria Consorziale Policlinico, Bari, Italy
| | - Giuseppe Blasi
- Group of Psychiatric Neuroscience, Department of Basic Medical Sciences, Neuroscience and Sense Organs, University of Bari Aldo Moro, Bari, Italy.,Azienda Ospedaliero-Universitaria Consorziale Policlinico, Bari, Italy
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Kuravsky M, Barinova K, Marakhovskaya A, Eldarov M, Semenyuk P, Muronetz V, Schmalhausen E. Sperm-specific glyceraldehyde-3-phosphate dehydrogenase is stabilized by additional proline residues and an interdomain salt bridge. Biochim Biophys Acta 2014; 1844:1820-6. [PMID: 25091199 DOI: 10.1016/j.bbapap.2014.07.018] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2014] [Revised: 07/23/2014] [Accepted: 07/25/2014] [Indexed: 11/25/2022]
Abstract
Sperm-specific glyceraldehyde-3-phosphate dehydrogenase (GAPDS) exhibits enhanced stability compared to the somatic isoenzyme (GAPD). A comparative analysis of the structures of these isoenzymes revealed characteristic features, which could be important for the stability of GAPDS: six specific proline residues and three buried salt bridges. To evaluate the impact of these structural elements into the stability of this isoenzyme, we obtained two series of mutant GAPDS: 1) six mutants each containing a substitution of one of the specific prolines by alanine, and 2) three mutants each containing a mutation breaking one of the salt bridges. Stability of the mutants was evaluated by differential scanning calorimetry and by their resistance towards guanidine hydrochloride (GdnHCl). The most effect on thermostability was observed for the mutants P326A and P164A: the Tm values of the heat-absorption curves decreased by 6.0 and 3.3°C compared to the wild type protein, respectively. The resistance towards GdnHCl was affected most by the mutation D311N breaking the salt bridge between the catalytic and NAD(+)-binding domains: the inactivation rate constant in the presence of GdnHCl increased six-fold, and the value of GdnHCl concentration corresponding to the protein half-denaturation decreased from 1.83 to 1.35M. Besides, the mutation D311N enhanced the enzymatic activity of the protein two-fold. The results suggest that the residues P164 (β-turn), P326 (first position of α-helix), and the interdomain salt bridge D311-H124 are significant for the enhanced stability of GAPDS. The salt bridge D311-H124 enhances stability of the active site of GAPDS at the expense of the catalytic activity.
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Affiliation(s)
- Mikhail Kuravsky
- Belozersky Institute of Physico-Chemical Biology of Lomonosov Moscow State University, Leninskie gory, Moscow 119234, Russia.
| | - Kseniya Barinova
- Belozersky Institute of Physico-Chemical Biology of Lomonosov Moscow State University, Leninskie gory, Moscow 119234, Russia.
| | - Aleksandra Marakhovskaya
- Belozersky Institute of Physico-Chemical Biology of Lomonosov Moscow State University, Leninskie gory, Moscow 119234, Russia.
| | - Mikhail Eldarov
- Bioengineering Center, Russian Academy of Science, prosp. 60-letiya Oktyabrya, 7, korp. 1, Moscow 117312, Russia.
| | - Pavel Semenyuk
- Belozersky Institute of Physico-Chemical Biology of Lomonosov Moscow State University, Leninskie gory, Moscow 119234, Russia.
| | - Vladimir Muronetz
- Belozersky Institute of Physico-Chemical Biology of Lomonosov Moscow State University, Leninskie gory, Moscow 119234, Russia.
| | - Elena Schmalhausen
- Belozersky Institute of Physico-Chemical Biology of Lomonosov Moscow State University, Leninskie gory, Moscow 119234, Russia.
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