Neuron, Neural network, Synapse formation, Mind, Gene
Understanding the biological bases for generating the mind in the brain
Our investigations are aimed toward understanding the biological bases for generating brain function including memory, mind and consciousness. The brain is a complex multicellular system involving an enormous number of neurons. The neuron is the basic functional unit of the brain, and neurons are organized by complex networks with many other neurons. We found genetic bases for neuronal individuality in the brain. The extensive molecular diversity of neuronal cell-surface proteins affects neurons' individual properties and connectivity. We are approaching the molecular bases for neuronal individuality and appropriate neuronal wiring during brain development.
Clustered protocadherins are diverse cell-adhesion molecules expressed in the brain. Random and different combinatorial sets of them are expressed in individual neurons, and have roles for generating the complex neural networks and functional neuronal groups (cell assembly) in the brain.
|Takeshi Yagi (Professor)||yagi[at]fbs.osaka-u.ac.jp|
|Ryosuke Kaneko (Associate Professor)||rkaneko[at]fbs.osaka-u.ac.jp|
|Noriyuki Sugo (Special Appointed Assistant Professor)||sugo[at]fbs.osaka-u.ac.jp|
|Hiroaki Kobayashi (Assistant Professor)||hirokob[at]fbs.osaka-u.ac.jp|
|Etsuko Tarusawa (Assistant Professor)||tarusawa[at]fbs.osaka-u.ac.jp|
|Mayumi Higuchi (Technical Staff)||mhiguchi[at]fbs.osaka-u.ac.jp|
|Ayako Nishimori (Secretary)||a.nishimori[at]fbs.osaka-u.ac.jp|
|Tomoko Miyashita (Secretary)||t.miyashita[at]fbs.osaka-u.ac.jp|
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- What is your hot research topic?
- Revealing mechanisms of clustered protocadherins for combinatorial stochastic expressions and neural network formation in individual neurons.
- What is your breakthrough or research progress in the last 5 years?
- Clonal neurons from identical neural stem cells in the cortex build reciprocal connections.
- Stochastic expressions of clustered protocadherins in individual neurons is determined by epigenetic regulations.
- Clustered protocadherins have crucial roles for functional neural network formation.
- Clustered protocadherins are correlated with human psychiatric disorders.
- What kind of background do your lab members have？
- Our laboratory members are specialists in molecular biology, developmental technology, electrophysiology, behavior sciences, and psychiatry.
- Do you collaborate with other institutions and universities?
- We are collaborate with the Icahn School of Medicine at Mount Sinai, National Institute for Physiological Sciences (NIPS), RIKEN, the University of Tokyo, Kyoto University, Kobe University, Nagoya University, Toyama University, etc.
- What kind of careers do your Lab's alumni go on to?
- Scientists in universities, institutes and pharmaceutical companies.
- How do you develop your research?
- We aim to reveal molecular mechanisms for building complex neural networks of cell assemblies based on brain function.
Publications (Research Articles, Reviews, Books)
Pcdhb deficiency affects hippocampal CA1 ensemble activity and contextual fear discrimination
Mol. Brain 13(1):7 2020
Snf2h drives chromatin remodeling to prime upper layer cortical neuron development
Front. Molec. Neurosci. 0.66875 2019
Skilled movements require inhibition of corticospinal axon collateral formation in the spinal cord by semaphorin signaling in mice
J. Neurosci. 39(45):8885-8899 2019
miR-124 dosage regulates prefrontal cortex function by dopaminergic modulation.
Sci Rep 9(1):3445 2019
Dysregulated protocadherin-pathway activity as an intrinsic defect in iPSC-derived cortical interneurons from patients with schizophrenia.
Nat. Neurosci. 22(2):229-242 2019
Molecular diversity of clustered protocadherin-a required for sensory integration and short-term memory in mice.
Sci Rep 8(1):9616 2018
Protocadherin-αC2 is required for diffuse projections of serotonergic axons.
Sci Rep 7:15908 2017
Recognition memory: Cellular evidence of a massive contribution of the LEC to familiarity and a lack of involvement of the hippocampal subfields CA1and CA3
Hippocampus 27(10):1083-1092 2017
Genome Stability by DNA polymerase β in Neural Progenitors Contributes to Neuronal Differentiation in Cortical Development.
J. Neurosci. 37(35):8444-8458 2017
The methyltransferase SETDB1 regulates a large neuron- specific topological chromatin domain.
Nature Genet. 49(8):1239-1250 2017
Protein Tyrosine Phosphatase δ mediates the Sema3A-induced cortical basal dendritic arborization through the activation of Fyn tyrosine kinase.
J. Neurosci. 37(30):7125-7139 2017
Regulation of clustered protocadherin genes in individual neurons.
Front. Molec. Neurosci. 69:122-130 2017
Slow-Myofiber Commitment by Semaphorin 3A Secreted from Myogenic Stem Cells.
Stem Cells 35(7):1815-1834 2017
Clustered protocadherins are required for building functional neural circuits
Front. Molec. Neurosci. 0.495833333 2017
Learning new sequential stepping patterns requires striatal plasticity during the earliest phase of acquisition.
Eur. J. Neurosci. 45(7):901-911 2017
Distinct and cooperative functions for the protocadherin-α, -β and -γ clusters in neuronal survival and axon targeting.
Front. Molec. Neurosci. 0.482638889 2016
Establishment of high reciprocal connectivity between clonal cortical neurons is regulated by the Dnmt3b DNA methyltransferase and clustered protocadherins.
BMC Biol. 14(1):103 2016
Similarity in neuronal firing regimes across mammalian species.
J. Neurosci. 36(21):5736-47 2016
Imaging a memory trace over half a life-time in the medial temporal lobe reveals a time-limited role of CAA3 neurons in retrieval.
eLife 5:e11862 2016
Transgenic rat model of childhood-onset dermatitis by overexpressing telomerase reverse transcriptase (TERT).
Transgenic Res. 25(4):413-24 2016
Our ideal candidate (as a graduate student)
We are looking for a highly motivated person to work on our research topics as our lab member. Our lab welcomes the person who loves taking care of creatures, hand working and handcraft too. Any kind of background (such as your expertise or major) is available.
KOKORO-Biology Group, Graduate School of Frontier Biosciences, Osaka University,
1-3 Yamadaoka, Suita, Osaka 565-0871 Japan.
E-mail: yagi[at]fbs.osaka-u.ac.jp (Prof. Takeshi Yagi)
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