alexa IPSC-based Research Of Bipolar Mania
ISSN: 2329-6577

Biological Systems: Open Access
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JOINT EVENT on 2nd International Conference on Bioscience and 5th International Conference on Integrative Biology
June 19-21, 2017 London, UK

Jun Yao
Tsinghua University School of Life Sciences, China
ScientificTracks Abstracts: Biol Syst Open Access
DOI: 10.4172/2329-6577-C1-008
Abstract
Bipolar disorder (BD) is a complex neuropsychiatric disorder that is characterized by intermittent episodes of mania and depression; without treatment, 15% of patients commit suicide. Hence, BD has been ranked by the WHO as a top disorder of morbidity and lost productivity. Previous neuropathological studies have revealed a series of alterations in the brains of BD patients or animal models, such as reduced glial cell number in the patient prefrontal cortex, up-regulated activities of the PKA/PKC pathways, and changes in neurotransmission. However, the roles and causation of these changes in BD have been too complex to exactly determine the pathology of the disease. Furthermore, while some patients show remarkable improvement with lithium treatment, for yet unknown reasons, other patients are refractory to lithium treatment. Therefore, developing an accurate and powerful biological model for BD has been a challenge. The introduction of induced pluripotent stem cell (iPSC) technology has provided a new approach. Here, we developed a human BD iPSC model and investigated the cellular phenotypes of hippocampal dentate gyrus-like neurons derived from patient iPSCs. Guided by RNA-seq expression profiling, we detected mitochondrial abnormalities in young BD neurons using mitochondrial assays and, using both patch clamp recording and somatic Ca2+ imaging, we observed hyperactive action potential (AP) firing. This hyperexcitability phenotype of young BD neurons was selectively reversed by lithium treatment only in neurons derived from the patients who also responded to lithium treatment. Therefore, hyperexcitability is one early endophenotype of BD, and our BD iPSC model may be useful for the development of new therapies and drugs aimed at clinical treatment of this disease.
Biography

Jun Yao completed his PhD at Pennsylvania State University, Department of Biology, USA in 2007. He is a Principal Investigator of School of Life Sciences at Tsinghua University, China. In recent years, he has published more than 10 papers in reputed journals.

Email: [email protected]

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