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Leung KY, Weston E, De Castro SCP, Nikolopoulou E, Sudiwala S, Savery D, Eaton S, Copp AJ, Greene NDE. Association of embryonic inositol status with susceptibility to neural tube defects, metabolite profile, and maternal inositol intake. FASEB J 2024; 38:e23738. [PMID: 38855924 DOI: 10.1096/fj.202400206r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Revised: 05/14/2024] [Accepted: 05/29/2024] [Indexed: 06/11/2024]
Abstract
Maternal nutrition contributes to gene-environment interactions that influence susceptibility to common congenital anomalies such as neural tube defects (NTDs). Supplemental myo-inositol (MI) can prevent NTDs in some mouse models and shows potential for prevention of human NTDs. We investigated effects of maternal MI intake on embryonic MI status and metabolism in curly tail mice, which are genetically predisposed to NTDs that are inositol-responsive but folic acid resistant. Dietary MI deficiency caused diminished MI in maternal plasma and embryos, showing that de novo synthesis is insufficient to maintain MI levels in either adult or embryonic mice. Under normal maternal dietary conditions, curly tail embryos that developed cranial NTDs had significantly lower MI content than unaffected embryos, revealing an association between diminished MI status and failure of cranial neurulation. Expression of inositol-3-phosphate synthase 1, required for inositol biosynthesis, was less abundant in the cranial neural tube than at other axial levels. Supplemental MI or d-chiro-inositol (DCI) have previously been found to prevent NTDs in curly tail embryos. Here, we investigated the metabolic effects of MI and DCI treatments by mass spectrometry-based metabolome analysis. Among inositol-responsive metabolites, we noted a disproportionate effect on nucleotides, especially purines. We also found altered proportions of 5-methyltetrahydrolate and tetrahydrofolate in MI-treated embryos suggesting altered folate metabolism. Treatment with nucleotides or the one-carbon donor formate has also been found to prevent NTDs in curly tail embryos. Together, these findings suggest that the protective effect of inositol may be mediated through the enhanced supply of nucleotides during neural tube closure.
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Affiliation(s)
- Kit-Yi Leung
- Developmental Biology and Cancer Department, Great Ormond Street Institute of Child Health, University College London, London, UK
| | - Eleanor Weston
- Developmental Biology and Cancer Department, Great Ormond Street Institute of Child Health, University College London, London, UK
| | - Sandra C P De Castro
- Developmental Biology and Cancer Department, Great Ormond Street Institute of Child Health, University College London, London, UK
| | - Evanthia Nikolopoulou
- Developmental Biology and Cancer Department, Great Ormond Street Institute of Child Health, University College London, London, UK
| | - Sonia Sudiwala
- Developmental Biology and Cancer Department, Great Ormond Street Institute of Child Health, University College London, London, UK
| | - Dawn Savery
- Developmental Biology and Cancer Department, Great Ormond Street Institute of Child Health, University College London, London, UK
| | - Simon Eaton
- Developmental Biology and Cancer Department, Great Ormond Street Institute of Child Health, University College London, London, UK
| | - Andrew J Copp
- Developmental Biology and Cancer Department, Great Ormond Street Institute of Child Health, University College London, London, UK
| | - Nicholas D E Greene
- Developmental Biology and Cancer Department, Great Ormond Street Institute of Child Health, University College London, London, UK
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2
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Pessoa ALS, Quesada AA, Nóbrega PR, Viana APO, de Oliveira KT, Figueiredo T, Santos S, Kok F. Neuropsychological Characterization of Autosomal Recessive Intellectual Developmental Disorder 59 Associated with IMPA1 (MRT59). Brain Sci 2023; 13:1048. [PMID: 37508980 PMCID: PMC10377093 DOI: 10.3390/brainsci13071048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 07/05/2023] [Accepted: 07/06/2023] [Indexed: 07/30/2023] Open
Abstract
Biallelic loss of function of IMPA1 causes autosomal recessive intellectual developmental disorder 59 (MRT59, OMIM #617323). MRT59 has been reported to present with significant intellectual disability and disruptive behavior, but little is known about the neurocognitive pattern of those patients. Thus, the aims of this study were: (1) to assess the cognitive profile of these patients, and (2) to evaluate their functional dependence levels. Eighteen adults, aged 37 to 89 years, participated in this study: nine MRT59 patients, five heterozygous carriers and four non-carrier family members. All of them were from a consanguineous family living in Northeast Brazil. All IMPA1 patients had the (c.489_493dupGGGCT) pathogenic variant in homozygosis. For cognitive assessment, the WASI battery was applied in nine MRT59 patients and compared to heterozygous carriers and non-carrier family members. Functional dependence was evaluated using the functional independence measure (FIM). Patients showed moderate to severe intellectual disability and severe functional disabilities. Heterozygous carriers did not differ from non-carriers. MRT59 patients should be followed up by health professionals in an interdisciplinary way to understand their cognitive disabilities and functional needs properly.
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Affiliation(s)
- Andre Luiz Santos Pessoa
- Albert Sabin Children's Hospital, Fortaleza 60410-794, Brazil
- Faculty of Medicine, State University of Ceará (UECE), Fortaleza 60714-903, Brazil
| | - Andrea Amaro Quesada
- The Edson Queiroz Foundation, University of Fortaleza (UNIFOR), Fortaleza 60811-905, Brazil
| | - Paulo Ribeiro Nóbrega
- Hospital Universitário Walter Cantídio-UFC, Fortaleza 60430-372, Brazil
- Faculty of Medicine, Centro Universitário Christus, Fortaleza 60160-230, Brazil
| | | | | | - Thalita Figueiredo
- Faculty of Medicine, Federal University of Alagoas (UFAL), Maceio 57200-000, Brazil
| | - Silvana Santos
- State University of Paraíba (UEPB), Campina Grande 58429-500, Brazil
| | - Fernando Kok
- Department of Neurology, University of São Paulo (USP), São Paulo 05508-220, Brazil
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3
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Chen Q, Shen L, Li S. Emerging role of inositol monophosphatase in cancer. Biomed Pharmacother 2023; 161:114442. [PMID: 36841024 DOI: 10.1016/j.biopha.2023.114442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2023] [Revised: 02/22/2023] [Accepted: 02/22/2023] [Indexed: 02/27/2023] Open
Abstract
Inositol monophosphatase (IMPase) is an enzyme with two homologs-IMPA1 and IMPA2-that is responsible for dephosphorylating myo-inositol monophosphate to generate myo-inositol. IMPase has been extensively studied in neuropsychiatric diseases and is regarded as a susceptibility gene. Recently, emerging evidence has implied that IMPase is linked to cancer development and progression and correlates with patient survival outcomes. Interestingly, whether it acts as a tumor-promoter or tumor-suppressor is inconsistent among different research studies. In this review, we summarize the latest findings on IMPase in cancer, focusing on exploring the underlying mechanisms for its pro- and anticancer roles. In addition, we discuss the potential methods of IMPase regulation in cancer cells and the possible approaches for IMPase intervention in clinical practice.
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Affiliation(s)
- Qian Chen
- Department of Oncology, Xiangya Hospital, Central South University, Changsha, China; National Clinical Research Center for Geriatric Disorders, Department of Geriatrics, Xiangya Hospital, Central South University, Changsha, China
| | - Liangfang Shen
- Department of Oncology, Xiangya Hospital, Central South University, Changsha, China; National Clinical Research Center for Geriatric Disorders, Department of Geriatrics, Xiangya Hospital, Central South University, Changsha, China
| | - Shan Li
- Department of Oncology, Xiangya Hospital, Central South University, Changsha, China; National Clinical Research Center for Geriatric Disorders, Department of Geriatrics, Xiangya Hospital, Central South University, Changsha, China.
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Ohnishi T, Kiyama Y, Arima‐Yoshida F, Kadota M, Ichikawa T, Yamada K, Watanabe A, Ohba H, Tanaka K, Nakaya A, Horiuchi Y, Iwayama Y, Toyoshima M, Ogawa I, Shimamoto‐Mitsuyama C, Maekawa M, Balan S, Arai M, Miyashita M, Toriumi K, Nozaki Y, Kurokawa R, Suzuki K, Yoshikawa A, Toyota T, Hosoya T, Okuno H, Bito H, Itokawa M, Kuraku S, Manabe T, Yoshikawa T. Cooperation of LIM domain-binding 2 (LDB2) with EGR in the pathogenesis of schizophrenia. EMBO Mol Med 2021; 13:e12574. [PMID: 33656268 PMCID: PMC8033514 DOI: 10.15252/emmm.202012574] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 01/21/2021] [Accepted: 01/25/2021] [Indexed: 01/15/2023] Open
Abstract
Genomic defects with large effect size can help elucidate unknown pathologic architecture of mental disorders. We previously reported on a patient with schizophrenia and a balanced translocation between chromosomes 4 and 13 and found that the breakpoint within chromosome 4 is located near the LDB2 gene. We show here that Ldb2 knockout (KO) mice displayed multiple deficits relevant to mental disorders. In particular, Ldb2 KO mice exhibited deficits in the fear-conditioning paradigm. Analysis of the amygdala suggested that dysregulation of synaptic activities controlled by the immediate early gene Arc is involved in the phenotypes. We show that LDB2 forms protein complexes with known transcription factors. Consistently, ChIP-seq analyses indicated that LDB2 binds to > 10,000 genomic sites in human neurospheres. We found that many of those sites, including the promoter region of ARC, are occupied by EGR transcription factors. Our previous study showed an association of the EGR family genes with schizophrenia. Collectively, the findings suggest that dysregulation in the gene expression controlled by the LDB2-EGR axis underlies a pathogenesis of subset of mental disorders.
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MicroRNAs hsa-mir-34a and hsa-mir-124 as biomarkers for predicting and monitoring the lithium treatment in bipolar disorder: in silico analysis. UKRAINIAN BIOCHEMICAL JOURNAL 2021. [DOI: 10.15407/ubj93.01.082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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A novel function of IMPA2, plays a tumor-promoting role in cervical cancer. Cell Death Dis 2020; 11:371. [PMID: 32409648 PMCID: PMC7224180 DOI: 10.1038/s41419-020-2507-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Revised: 04/10/2020] [Accepted: 04/14/2020] [Indexed: 12/19/2022]
Abstract
Discovery of genes and molecular mechanism involved in cervical cancer development would promote the prevention and treatment. By comparing gene expression profiles of cervical carcinoma in situ (CCIS) and adjacent normal tissues, we identified a potential cancer-promoting gene, IMPA2. This study aimed to elucidate the role of IMPA2 and underlying molecular mechanisms in cervical cancer progression. To do this expression of IMPA2 was compared between human cervical cancer and corresponding adjacent normal cervical tissues firstly. CCK-8 assay, clone formation assay, wound healing assay, transwell assay, and tumor formation in nude mice were performed to demonstrate the effect of IMPA2 in cervical cancer proliferation and metastasis. Further proteomic profiling and western blotting explored the molecular pathway involved in the IMPA2-regulating process. The results showed that IMPA2 gene expression was upregulated in cervical cancer. Consistently, silencing of IMPA2 suppressed tumor formation in BALB/c nude mice. Short hairpin RNA (shRNA)-mediated IMPA2 silencing significantly inhibited proliferation and colony-forming abilities of cervical cancer cells, while IMPA2 overexpression had little impact. Also, IMPA2 silencing suppressed cellular migration, but overexpression promoted migration. Proteomics analysis revealed the involvement of mitogen-activated protein kinase (MAPK) pathway in tumor-promoting action of IMPA2. Significantly, the inhibition of IMPA2 activated ERK phosphorylation, and its inhibitory effects can be restored by using selective ERK inhibitor, FR180204. In conclusion, IMPA2 acts as an oncogene in the proliferation and migration of cervical cancer. IMPA2 downregulated ERK phosphorylation to promote cervical cancer. These findings identify a new mechanism underlying cervical cancer and suggest a regulating effect of IMPA2 in MAPK signaling pathway.
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Macey PM, Sarma MK, Prasad JP, Ogren JA, Aysola R, Harper RM, Thomas MA. Obstructive sleep apnea is associated with altered midbrain chemical concentrations. Neuroscience 2017; 363:76-86. [PMID: 28893651 PMCID: PMC5983363 DOI: 10.1016/j.neuroscience.2017.09.001] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Revised: 08/25/2017] [Accepted: 09/03/2017] [Indexed: 12/28/2022]
Abstract
Obstructive sleep apnea (OSA) is accompanied by altered structure and function in cortical, limbic, brainstem, and cerebellar regions. The midbrain is relatively unexamined, but contains many integrative nuclei which mediate physiological functions that are disrupted in OSA. We therefore assessed the chemistry of the midbrain in OSA in this exploratory study. We used a recently developed accelerated 2D magnetic resonance spectroscopy (2D-MRS) technique, compressed sensing-based 4D echo-planar J-resolved spectroscopic imaging (4D-EP-JRESI), to measure metabolites in the midbrain of 14 OSA (mean age±SD:54.6±10.6years; AHI:35.0±19.4; SAO2 min:83±7%) and 26 healthy control (50.7±8.5years) subjects. High-resolution T1-weighted scans allowed voxel localization. MRS data were processed with custom MATLAB-based software, and metabolite ratios calculated with respect to the creatine peak using a prior knowledge fitting (ProFit) algorithm. The midbrain in OSA showed decreased N-acetylaspartate (NAA; OSA:1.24±0.43, Control:1.47±0.41; p=0.03; independent samples t-test), a marker of neuronal viability. Increased levels in OSA over control subjects appeared in glutamate (Glu; OSA:1.23±0.57, Control:0.98±0.33; p=0.03), ascorbate (Asc; OSA:0.56±0.28, Control:0.42±0.20; (50.7±8.5years; p=0.03), and myo-inositol (mI; OSA:0.96±0.48, Control:0.72±0.35; p=0.03). No differences between groups appeared in γ-aminobutyric acid (GABA) or taurine. The midbrain in OSA patients shows decreased NAA, indicating neuronal injury or dysfunction. Higher Glu levels may reflect excitotoxic processes and astrocyte activation, and higher mI is also consistent with glial activation. Higher Asc levels may result from oxidative stress induced by intermittent hypoxia in OSA. Additionally, Asc and Glu are involved with glutamatergic processes, which are likely upregulated in the midbrain nuclei of OSA patients. The altered metabolite levels help explain dysfunction and structural deficits in the midbrain of OSA patients.
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Key Words
- Asc, ascorbate
- Asp, aspartate
- Ch, choline
- GABA, gamma-aminobutyric acid
- GPC, glycerophosphorylcholine
- GSH, glutathione
- Gln, glutamine
- Glu, glutamate
- Gly, glycine
- NAA, N-acetylaspartate
- NAAG, N-acetylaspartate glutamate
- PCh, phosphocholine
- PE, phosphoethanolamine
- Scy, scyllo-inositol
- Tau, taurine
- Thr, threonine
- autonomic
- intermittent hypoxia
- mI, myo-inositol
- magnetic resonance spectroscopy
- periaqueductal gray
- respiration
- sleep-disordered breathing
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Affiliation(s)
- Paul M Macey
- School of Nursing, David Geffen School of Medicine at UCLA, University of California at Los Angeles, Los Angeles, CA 90095, United States; Brain Research Institute, David Geffen School of Medicine at UCLA, University of California at Los Angeles, Los Angeles, CA 90095, United States.
| | - Manoj K Sarma
- Department of Radiological Sciences, David Geffen School of Medicine at UCLA, University of California at Los Angeles, Los Angeles, CA 90095, United States
| | - Janani P Prasad
- School of Nursing, David Geffen School of Medicine at UCLA, University of California at Los Angeles, Los Angeles, CA 90095, United States
| | - Jennifer A Ogren
- Department of Neurobiology, David Geffen School of Medicine at UCLA, University of California at Los Angeles, Los Angeles, CA 90095, United States
| | - Ravi Aysola
- Department of Medicine (Division of Pulmonary and Critical Care), David Geffen School of Medicine at UCLA, University of California at Los Angeles, Los Angeles, CA 90095, United States
| | - Ronald M Harper
- Brain Research Institute, David Geffen School of Medicine at UCLA, University of California at Los Angeles, Los Angeles, CA 90095, United States; Department of Neurobiology, David Geffen School of Medicine at UCLA, University of California at Los Angeles, Los Angeles, CA 90095, United States
| | - M Albert Thomas
- Department of Radiological Sciences, David Geffen School of Medicine at UCLA, University of California at Los Angeles, Los Angeles, CA 90095, United States
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Figueiredo T, Melo US, Pessoa ALS, Nobrega PR, Kitajima JP, Rusch H, Vaz F, Lucato LT, Zatz M, Kok F, Santos S. A homozygous loss-of-function mutation in inositol monophosphatase 1 (IMPA1) causes severe intellectual disability. Mol Psychiatry 2016; 21:1125-9. [PMID: 26416544 DOI: 10.1038/mp.2015.150] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/05/2015] [Revised: 08/17/2015] [Accepted: 08/19/2015] [Indexed: 11/09/2022]
Abstract
The genetic basis of intellectual disability (ID) is extremely heterogeneous and relatively little is known about the role of autosomal recessive traits. In a field study performed in a highly inbred area of Northeastern Brazil, we identified and investigated a large consanguineous family with nine adult members affected by severe ID associated with disruptive behavior. The Genome-Wide Human SNP Array 6.0 microarray was used to determine regions of homozygosity by descent from three affected and one normal family member. Whole-exome sequencing (WES) was performed in one affected patient using the Nextera Rapid-Capture Exome kit and Illumina HiSeq2500 system to identify the causative mutation. Potentially deleterious variants detected in regions of homozygosity by descent and not present in either 59 723 unrelated individuals from the Exome Aggregation Consortium (Browser) or 1484 Brazilians were subject to further scrutiny and segregation analysis by Sanger sequencing. Homozygosity-by-descent analysis disclosed a 20.7-Mb candidate region at 8q12.3-q21.2 (lod score: 3.11). WES identified a homozygous deleterious variant in inositol monophosphatase 1 (IMPA1) (NM_005536), consisting of a 5-bp duplication (c.489_493dupGGGCT; chr8: 82,583,247; GRCh37/hg19) leading to a frameshift and a premature stop codon (p.Ser165Trpfs*10) that cosegregated with the disease in 26 genotyped family members. The IMPA1 gene product is responsible for the final step of biotransformation of inositol triphosphate and diacylglycerol, two second messengers. Despite its many physiological functions, no clinical phenotype has been assigned to this gene dysfunction to date. Additionally, IMPA1 is the main target of lithium, a drug that is at the forefront of treatment for bipolar disorder.
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Affiliation(s)
- T Figueiredo
- Northeast Biotechnology Network (RENORBIO), Federal University of Paraiba (UFPB), Joao Pessoa, Brazil.,Department of Biology, Paraiba State University (UEPB), Campina Grande, Brazil.,Department of Genetics and Evolutionary Biology, Human Genome and Stem Cell Research Center, Biosciences Institute, University of Sao Paulo (USP), Sao Paulo, Brazil
| | - U S Melo
- Department of Genetics and Evolutionary Biology, Human Genome and Stem Cell Research Center, Biosciences Institute, University of Sao Paulo (USP), Sao Paulo, Brazil
| | - A L S Pessoa
- Department of Neurology, School of Medicine, University of Sao Paulo (USP), Sao Paulo, Brazil.,School of Medicine, Fortaleza University (UNIFOR), Fortaleza, Brazil
| | - P R Nobrega
- Department of Neurology, School of Medicine, University of Sao Paulo (USP), Sao Paulo, Brazil
| | | | - H Rusch
- Laboratory of Genetic Metabolic Diseases, Department of Clinical Chemistry, University of Amsterdam, Academic Medical Center (AMC), Amsterdam, The Netherlands
| | - F Vaz
- Laboratory of Genetic Metabolic Diseases, Department of Clinical Chemistry, University of Amsterdam, Academic Medical Center (AMC), Amsterdam, The Netherlands
| | - L T Lucato
- Institute of Radiology, School of Medicine, University of Sao Paulo (USP), Sao Paulo, Brazil
| | - M Zatz
- Department of Genetics and Evolutionary Biology, Human Genome and Stem Cell Research Center, Biosciences Institute, University of Sao Paulo (USP), Sao Paulo, Brazil
| | - F Kok
- Department of Genetics and Evolutionary Biology, Human Genome and Stem Cell Research Center, Biosciences Institute, University of Sao Paulo (USP), Sao Paulo, Brazil.,Department of Neurology, School of Medicine, University of Sao Paulo (USP), Sao Paulo, Brazil.,Mendelics Genomic Analysis, Sao Paulo, Brazil
| | - S Santos
- Northeast Biotechnology Network (RENORBIO), Federal University of Paraiba (UFPB), Joao Pessoa, Brazil.,Department of Biology, Paraiba State University (UEPB), Campina Grande, Brazil
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Ohnishi T, Murata T, Watanabe A, Hida A, Ohba H, Iwayama Y, Mishima K, Gondo Y, Yoshikawa T. Defective craniofacial development and brain function in a mouse model for depletion of intracellular inositol synthesis. J Biol Chem 2014; 289:10785-10796. [PMID: 24554717 DOI: 10.1074/jbc.m113.536706] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
myo-Inositol is an essential biomolecule that is synthesized by myo-inositol monophosphatase (IMPase) from inositol monophosphate species. The enzymatic activity of IMPase is inhibited by lithium, a drug used for the treatment of mood swings seen in bipolar disorder. Therefore, myo-inositol is thought to have an important role in the mechanism of bipolar disorder, although the details remain elusive. We screened an ethyl nitrosourea mutant mouse library for IMPase gene (Impa) mutations and identified an Impa1 T95K missense mutation. The mutant protein possessed undetectable enzymatic activity. Homozygotes died perinatally, and E18.5 embryos exhibited striking developmental defects, including hypoplasia of the mandible and asymmetric fusion of ribs to the sternum. Perinatal lethality and morphological defects in homozygotes were rescued by dietary myo-inositol. Rescued homozygotes raised on normal drinking water after weaning exhibited a hyper-locomotive trait and prolonged circadian periods, as reported in rodents treated with lithium. Our mice should be advantageous, compared with those generated by the conventional gene knock-out strategy, because they carry minimal genomic damage, e.g. a point mutation. In conclusion, our results reveal critical roles for intracellular myo-inositol synthesis in craniofacial development and the maintenance of proper brain function. Furthermore, this mouse model for cellular inositol depletion could be beneficial for understanding the molecular mechanisms underlying the clinical effect of lithium and myo-inositol-mediated skeletal development.
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Affiliation(s)
- Tetsuo Ohnishi
- Laboratory for Molecular Psychiatry, RIKEN Brain Science Institute, Wako, Saitama 351-0198.
| | - Takuya Murata
- Mutagenesis and Genomics Team, RIKEN BioResource Center, Tsukuba, Ibaraki 305-0074
| | - Akiko Watanabe
- Laboratory for Molecular Psychiatry, RIKEN Brain Science Institute, Wako, Saitama 351-0198
| | - Akiko Hida
- Department of Psychophysiology, National Institute of Mental Health, National Center of Neurology and Psychiatry, Kodaira, Tokyo 187-8553, Japan
| | - Hisako Ohba
- Laboratory for Molecular Psychiatry, RIKEN Brain Science Institute, Wako, Saitama 351-0198
| | - Yoshimi Iwayama
- Laboratory for Molecular Psychiatry, RIKEN Brain Science Institute, Wako, Saitama 351-0198
| | - Kazuo Mishima
- Department of Psychophysiology, National Institute of Mental Health, National Center of Neurology and Psychiatry, Kodaira, Tokyo 187-8553, Japan
| | - Yoichi Gondo
- Mutagenesis and Genomics Team, RIKEN BioResource Center, Tsukuba, Ibaraki 305-0074
| | - Takeo Yoshikawa
- Laboratory for Molecular Psychiatry, RIKEN Brain Science Institute, Wako, Saitama 351-0198
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