发布日期:2017-12-19 来源:学科建设 浏览量:
报告题目:Complement,a target for drug development and immunotherapy in the clinic
报告时间:2017年12月20日(星期三)14:00-15:00
报告地点:校本部.图书馆第二学术报告厅
报 告 人:李浩洪 教授(华中科技大学武汉光电国家研究中心)
主办单位:生命科学与生物制药学院
主办单位:研究生院(学科建设办公室)
主办单位:辽宁省研究生现代药物领域创新与交流中心
报告人简介:
李浩洪,华中科技大学武汉光电国家研究中心教授,湖北省教育厅“楚天学者”。主要研究方向:综合运用膜片钳电生理技术,在体多通道活体动物记录技术,动物基因操纵以及光遗传学和成像技术,对情感记忆及相关疾病如抑郁症,焦虑症和冲动控制障碍等,在细胞水平,神经环路水平进行多学科的综合研究,以期能阐明正常生理状态下,情感记忆形成的神经环路机制,以及其在相关疾病形成中的作用。研究成果多数发表于国际顶尖SCI核心期刊,如 Nature Neuroscience,PNAS,Neuropsychopharmacology等。
报告内容简介:
Aversive stimuli can impact motivation and support associative learning as reinforcers. However, the neural circuitry underlying the processing of aversive reinforcers has not been elucidated. Here, we report that a subpopulation of central amygdala (CeA) GABAergic neurons expressing protein kinase C-delta (PKC-d+) displays robust responses to aversive stimuli during negative reinforcement learning. Importantly, projections from PKC-d+ neurons of the CeA to the substantia innominata (SI) could bi-directionally modulate negative reinforcement learning. Moreover, consistent with the idea that SI-projecting PKC-d+ neurons of the CeA encode aversive information, optogenetic activation of this pathway produces conditioned place aversion, a behavior prevented by simultaneous ablating of SI glutamatergic neurons. Taken together, our data define a cell-type-specific neural circuitry modulating associative learning by encoding aversive reinforcement signals.