Defensive behaviors are a group of responses that are instinctive and has evolved to avoid harm from predators and other threats in the environment. Like freezing or flight, defensive behaviors are innate and are expressed with a stereotypical set of movements, but they are far from fixed, instead, they are flexible and adaptive.
Currently we are actively studying the functional roles of hypothalamic signals in defensive behavior, as well as how brain circuit is dynamically responded. We believe that the defensive behavior circuits are plastic and that changes are likely to occur in various nodes along the circuit. We utilize optogenetic and chemogenetic methods in free moving mice and seek to reveal and manipulate the neural dynamics that support the complex defensive behavior in response to threat.
We hope that our research uncovers the neural mechanism mediating the plasticity of negative emotional behaviors and improves our understanding of brain function and cognition in general.
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Wang W#, Schuette PJ#, Nagai J, Tobias BC, Reis FMCV, Ji S, Lima MAX, La-Vu MQ, Pereira SM, Chakerian M, Leonard S, Lin L, Severino A, Cahill C, Canteras NS, Khakh BS, Kao J, Adhikari A*.(2021) Coordination of Escape and Spatial Navigation Circuits Orchestrate Versatile Flight from Threats. Neuron. 109 (11):1848-1860.(Highlighted by Neuron)
Wang W*, Schuette PJ*, La-Vu MQ, Tobias BC, Reis FMCV, Ji S, Sehgal M, Canteras NS, Khakh BS, Wager TD, Kao JC, Adhikari A*. (2021) Dorsal premammillary hypothalamic projection to periaqueductal gray controls escape vigor. eLife. 10: e69178
Wang W#, Cox BM#, Jia Y, Le A. A, Jung KM, Hou J, Piomelli D, Gall CM, Lynch G* (2018). Treating a novel plasticity defect rescues episodic memory in Fragile X model mice. Molecular Psychiatry, 23 (8):1798-1806.
Wang W, Jia Y, Pham DT, Jung KM, Cox CD, Rumbaugh G, Piomelli D, Gall CM*, Lynch G* (2018). Atypical endocannabinoid signaling initiates a new form of memory-related plasticity at a cortical input to hippocampus. Cerebral Cortex. 28(7):2253-2266.
Wang W, Le A, Hou J, Levin ER, Lynch G*, Gall CM* (2018). Memory-related synaptic plasticity is sexually dimorphic in rodent hippocampus. J Neurosci. 38 (37):7935-7951. (Featured Article; recommended in F1000).
Wang W#, Ju YY#, Zhou Qin#, Tang JX, Li M, Zhang L, Kang S, Chen ZG, Ji H, Xu L*, Liu JG* (2017).The small GTPase Rac1 contributes to extinction of aversive memories of drug withdrawal by facilitating GABAA receptor endocytosis in the vmPFC. J Neurosci. 37(30):7096-7110. (Featured Article).
Wang W*, Trieu BH*, Palmer LC, Jia Y, Pham DT, Jung KM, Gall CM, Piomelli D, Lynch G. (2016) A primary cortical input to hippocampus expresses a pathway-specific and endocannabinoid-dependent form of Long-Term Potentiation. eNeuro. 8;3(4). pii: ENEURO.0160-16.2016. (Featured by Neuronline).
Wang W, Kantorovich S, Babayan AH, Hou B, Gall CM*, Lynch G*. (2016). Estrogen's effects on excitatory synaptic transmission entail integrin and TrkB transactivation and depend upon β1-integrin function. Neuropsychopharmacology. 41(11):2723-32.
Chen ZG*, Liu X*, Wang W*, Geng F, Gao J, Gan CL, Chai JR, He L, Hu G, Zhou H, Liu JG. (2016). Dissociative role for dorsal hippocampus in mediating heroin self-administration and relapse through CDK5 and RhoB signaling revealed by proteomic analysis. Addiction Biology. 22 (6):1731-1742.
Wang W#, Chen ZG#, Liu WT, Chi ZQ, He L, Liu JG* (2015). Dorsal hippocampal NMDA receptor blockade impairs extinction of naloxone-precipitated conditioned place aversion in acute morphine-treated rats by suppressing ERK and CREB phosphorylation in the basolateral amygdala. Br. J. Pharmacol. 172(2):482-91.
Wang W#, Kang S#, Liu WT, Li M, Liu Y, Yu C, Chen J, Chi ZQ, He L, Liu JG* (2012). Extinction of aversive memories associated with morphine withdrawal requires ERK-mediated epigenetic regulation of brain-derived neurotrophic factor transcription in the rat ventromedial prefrontal cortex. J Neurosci. 32 (40), 1376313775. (Featured by Science Times).
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Email: weishengw@fudan.edu.cn