PMID- 37626171 OWN - NLM STAT- MEDLINE DCOM- 20230828 LR - 20231119 IS - 2041-1723 (Electronic) IS - 2041-1723 (Linking) VI - 14 IP - 1 DP - 2023 Aug 25 TI - A frontal transcallosal inhibition loop mediates interhemispheric balance in visuospatial processing. PG - 5213 LID - 10.1038/s41467-023-40985-5 [doi] LID - 5213 AB - Interhemispheric communication through the corpus callosum is required for both sensory and cognitive processes. Impaired transcallosal inhibition causing interhemispheric imbalance is believed to underlie visuospatial bias after frontoparietal cortical damage, but the synaptic circuits involved remain largely unknown. Here, we show that lesions in the mouse anterior cingulate area (ACA) cause severe visuospatial bias mediated by a transcallosal inhibition loop. In a visual-change-detection task, ACA callosal-projection neurons (CPNs) were more active with contralateral visual field changes than with ipsilateral changes. Unilateral CPN inactivation impaired contralateral change detection but improved ipsilateral detection by altering interhemispheric interaction through callosal projections. CPNs strongly activated contralateral parvalbumin-positive (PV+) neurons, and callosal-input-driven PV+ neurons preferentially inhibited ipsilateral CPNs, thus mediating transcallosal inhibition. Unilateral PV+ neuron activation caused a similar behavioral bias to contralateral CPN activation and ipsilateral CPN inactivation, and bilateral PV+ neuron activation eliminated this bias. Notably, restoring interhemispheric balance by activating contralesional PV+ neurons significantly improved contralesional detection in ACA-lesioned animals. Thus, a frontal transcallosal inhibition loop comprising CPNs and callosal-input-driven PV+ neurons mediates interhemispheric balance in visuospatial processing, and enhancing contralesional transcallosal inhibition restores interhemispheric balance while also reversing lesion-induced bias. CI - (c) 2023. Springer Nature Limited. FAU - Wang, Yanjie AU - Wang Y AD - Songjiang Research Institute, Shanghai Songjiang District Central Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai, 200025, China. AD - Center for Brain Science of Shanghai Children's Medical Center, Department of Anatomy and Physiology, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, China. FAU - Chen, Zhaonan AU - Chen Z AD - Songjiang Research Institute, Shanghai Songjiang District Central Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai, 200025, China. AD - Center for Brain Science of Shanghai Children's Medical Center, Department of Anatomy and Physiology, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, China. FAU - Ma, Guofen AU - Ma G AD - Songjiang Research Institute, Shanghai Songjiang District Central Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai, 200025, China. AD - Center for Brain Science of Shanghai Children's Medical Center, Department of Anatomy and Physiology, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, China. FAU - Wang, Lizhao AU - Wang L AD - Songjiang Research Institute, Shanghai Songjiang District Central Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai, 200025, China. AD - Center for Brain Science of Shanghai Children's Medical Center, Department of Anatomy and Physiology, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, China. FAU - Liu, Yanmei AU - Liu Y AD - Songjiang Research Institute, Shanghai Songjiang District Central Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai, 200025, China. AD - Center for Brain Science of Shanghai Children's Medical Center, Department of Anatomy and Physiology, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, China. FAU - Qin, Meiling AU - Qin M AD - Institute of Neuroscience, CAS Center for Excellence in Brain Science and Intelligence Technology, State Key Laboratory of Neuroscience, Chinese Academy of Sciences, Shanghai, 200031, China. FAU - Fei, Xiang AU - Fei X AD - Institute of Neuroscience, CAS Center for Excellence in Brain Science and Intelligence Technology, State Key Laboratory of Neuroscience, Chinese Academy of Sciences, Shanghai, 200031, China. FAU - Wu, Yifan AU - Wu Y AUID- ORCID: 0009-0000-2032-6719 AD - Songjiang Research Institute, Shanghai Songjiang District Central Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai, 200025, China. AD - Center for Brain Science of Shanghai Children's Medical Center, Department of Anatomy and Physiology, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, China. FAU - Xu, Min AU - Xu M AUID- ORCID: 0000-0002-6936-7543 AD - Institute of Neuroscience, CAS Center for Excellence in Brain Science and Intelligence Technology, State Key Laboratory of Neuroscience, Chinese Academy of Sciences, Shanghai, 200031, China. mxu@ion.ac.cn. FAU - Zhang, Siyu AU - Zhang S AUID- ORCID: 0000-0003-1745-2532 AD - Songjiang Research Institute, Shanghai Songjiang District Central Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai, 200025, China. zhang_siyu@sjtu.edu.cn. AD - Center for Brain Science of Shanghai Children's Medical Center, Department of Anatomy and Physiology, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, China. zhang_siyu@sjtu.edu.cn. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20230825 PL - England TA - Nat Commun JT - Nature communications JID - 101528555 RN - 0 (Parvalbumins) SB - IM MH - Animals MH - Mice MH - *Inhibition, Psychological MH - *Interneurons MH - Neurons MH - Corpus Callosum MH - Parvalbumins PMC - PMC10457336 COIS- The authors declare no competing interests. EDAT- 2023/08/26 05:41 MHDA- 2023/08/28 06:42 PMCR- 2023/08/25 CRDT- 2023/08/25 23:28 PHST- 2023/01/31 00:00 [received] PHST- 2023/08/17 00:00 [accepted] PHST- 2023/08/28 06:42 [medline] PHST- 2023/08/26 05:41 [pubmed] PHST- 2023/08/25 23:28 [entrez] PHST- 2023/08/25 00:00 [pmc-release] AID - 10.1038/s41467-023-40985-5 [pii] AID - 40985 [pii] AID - 10.1038/s41467-023-40985-5 [doi] PST - epublish SO - Nat Commun. 2023 Aug 25;14(1):5213. doi: 10.1038/s41467-023-40985-5.