PT  - JOURNAL ARTICLE
AU  - Ishii, Takaya
AU  - Ishikawa, Mitsuru
AU  - Fujimori, Koki
AU  - Maeda, Takuji
AU  - Kushima, Itaru
AU  - Arioka, Yuko
AU  - Mori, Daisuke
AU  - Nakatake, Yuhki
AU  - Yamagata, Bun
AU  - Nio, Shintaro
AU  - Kato, Takahiro A.
AU  - Yang, Nan
AU  - Wernig, Marius
AU  - Kanba, Shigenobu
AU  - Mimura, Masaru
AU  - Ozaki, Norio
AU  - Okano, Hideyuki
TI  - <em>In Vitro</em> Modeling of the Bipolar Disorder and Schizophrenia Using Patient-Derived Induced Pluripotent Stem Cells with Copy Number Variations of <em>PCDH1</em>5 and <em>RELN</em>
AID  - 10.1523/ENEURO.0403-18.2019
DP  - 2019 Sep 01
TA  - eneuro
PG  - ENEURO.0403-18.2019
VI  - 6
IP  - 5
4099  - http://www.eneuro.org/content/6/5/ENEURO.0403-18.2019.short
4100  - http://www.eneuro.org/content/6/5/ENEURO.0403-18.2019.full
SO  - eNeuro2019 Sep 01; 6
AB  - Bipolar disorder (BP) and schizophrenia (SCZ) are major psychiatric disorders, but the molecular mechanisms underlying the complicated pathologies of these disorders remain unclear. It is difficult to establish adequate in vitro models for pathological analysis because of the heterogeneity of these disorders. In the present study, to recapitulate the pathologies of these disorders in vitro, we established in vitro models by differentiating mature neurons from human induced pluripotent stem cells (hiPSCs) derived from BP and SCZ patient with contributive copy number variations, as follows: two BP patients with PCDH15 deletion and one SCZ patient with RELN deletion. Glutamatergic neurons and GABAergic neurons were induced from hiPSCs under optimized conditions. Both types of induced neurons from both hiPSCs exhibited similar phenotypes of MAP2 (microtubule-associated protein 2)-positive dendrite shortening and decreasing synapse numbers. Additionally, we analyzed isogenic PCDH15- or RELN-deleted cells. The dendrite and synapse phenotypes of isogenic neurons were partially similar to those of patient-derived neurons. These results suggest that the observed phenotypes are general phenotypes of psychiatric disorders, and our in vitro models using hiPSC-based technology may be suitable for analysis of the pathologies of psychiatric disorders.