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Cortical 5-hydroxytryptamine receptor 3A (Htr3a) positive inhibitory neurons: diversity in type and function

WU Jin-Yun¹, LIU Hong-Zhi¹, QI Yan-Qing¹, WU Xiao-Yang¹, CHEN Yang¹, LYU Jiang-Ten², GONG Ling¹, HE Miao^1,*

¹Institutes of Brain Science, Fudan University, Shanghai 200032, China；²Shanghai Jiao Tong University College of Basic Medical Sciences, Shanghai 200025, China

Abstract

Cortical GABAergic inhibitory neurons are composed of three major classes, each expressing parvalbumin (PV), somatostatin (SOM) and 5-hydroxytryptamine receptor 3A (Htr3a), respectively. Htr3a+ inhibitory neurons are mainly derived from the caudal ganglionic eminence (CGE). This highly heterogeneous group of inhibitory neurons are comprised of many different subtypes with distinct molecular signatures, morphological and electrophysiological properties and connectivity patterns. In this review, we summarized recent research progress regarding cortical Htr3a+ inhibitory neurons, focusing on their molecular, morphological and electrophysiological diversity, and introduced some genetic mouse tools that were used to study Htr3a+ inhibitory neurons.

Key words: 5-hydroxytryptamine receptor 3A; GABAergic inhibitory neuron; neuron heterogeneity

Received: 2020-07-16　　Accepted: 2020-12-10

Corresponding author: 何苗　　E-mail: hem@fudan.edu.cn

DOI: 10.13294/j.aps.2021.0012

Citing This Article：

WU Jin-Yun, LIU Hong-Zhi, QI Yan-Qing, WU Xiao-Yang, CHEN Yang, LYU Jiang-Ten, GONG Ling, HE Miao. Cortical 5-hydroxytryptamine receptor 3A (Htr3a) positive inhibitory neurons: diversity in type and function. Acta Physiol Sin 2021; 73 (2): 295-305 (in Chinese with English abstract).