PMID- 27493075 OWN - NLM STAT- MEDLINE DCOM- 20170726 LR - 20180416 IS - 1872-7972 (Electronic) IS - 0304-3940 (Linking) VI - 630 DP - 2016 Sep 6 TI - Transgenic approach to express the channelrhodopsin 2 gene in arginine vasopressin neurons of rats. PG - 194-198 LID - S0304-3940(16)30564-X [pii] LID - 10.1016/j.neulet.2016.08.001 [doi] AB - Optogenetics provides a powerful tool to regulate neuronal activity by light-sensitive ion channels such as channelrhodopsin 2 (ChR2). Arginine vasopressin (AVP; also known as the anti-diuretic hormone) is a multifunctional hormone which is synthesized in the magnocellular neurosecretory cells (MNCs) of the hypothalamus. Here, we have generated a transgenic rat that expresses an AVP-ChR2-enhanced green fluorescent protein (eGFP) fusion gene in the MNCs of the hypothalamus. The eGFP fluorescence that indicates the expression of ChR2-eGFP was observed in the supraoptic nucleus (SON) and in the magnocellular division of the paraventricular nucleus (PVN) that is known to contain AVP-secreting neurons. The eGFP fluorescence intensities in those nuclei and posterior pituitary were markedly increased after chronic salt loading (2% NaCl in drinking water for 5days). ChR2-eGFP was localized mainly in the membrane of AVP-positive MNCs. Whole-cell patch-clamp recordings were performed from single MNCs isolated from the SON of the transgenic rats, and blue light evoked repetitive action potentials. Our work provides for the first time an optogenetic approach to selectively activate AVP neurons in the rat. CI - Copyright (c) 2016 Elsevier Ireland Ltd. All rights reserved. FAU - Ishii, Masahiro AU - Ishii M AD - Department of Physiology, University of Occupational and Environmental Health, Kitakyushu, 807-8555 Japan; Department of Pediatrics, University of Occupational and Environmental Health, Kitakyushu, 807-8555 Japan. FAU - Hashimoto, Hirofumi AU - Hashimoto H AD - Department of Physiology, University of Occupational and Environmental Health, Kitakyushu, 807-8555 Japan. FAU - Ohkubo, Jun-Ichi AU - Ohkubo JI AD - Department of Otorhinolaryngology-Head and Neck Surgery, University of Occupational and Environmental Health, Kitakyushu, 807-8555 Japan. FAU - Ohbuchi, Toyoaki AU - Ohbuchi T AD - Department of Otorhinolaryngology-Head and Neck Surgery, University of Occupational and Environmental Health, Kitakyushu, 807-8555 Japan. FAU - Saito, Takeshi AU - Saito T AD - Department of Neurosurgery, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, 807-8555 Japan. FAU - Maruyama, Takashi AU - Maruyama T AD - Department of Physiology, University of Occupational and Environmental Health, Kitakyushu, 807-8555 Japan. FAU - Yoshimura, Mitsuhiro AU - Yoshimura M AD - Department of Physiology, University of Occupational and Environmental Health, Kitakyushu, 807-8555 Japan. FAU - Yamamoto, Yukiyo AU - Yamamoto Y AD - Department of Pediatrics, University of Occupational and Environmental Health, Kitakyushu, 807-8555 Japan. FAU - Kusuhara, Koichi AU - Kusuhara K AD - Department of Pediatrics, University of Occupational and Environmental Health, Kitakyushu, 807-8555 Japan. FAU - Ueta, Yoichi AU - Ueta Y AD - Department of Physiology, University of Occupational and Environmental Health, Kitakyushu, 807-8555 Japan. Electronic address: yoichi@med.uoeh-u.ac.jp. LA - eng PT - Journal Article DEP - 20160801 PL - Ireland TA - Neurosci Lett JT - Neuroscience letters JID - 7600130 RN - 0 (Channelrhodopsins) RN - 0 (enhanced green fluorescent protein) RN - 113-79-1 (Arginine Vasopressin) RN - 147336-22-9 (Green Fluorescent Proteins) RN - 451W47IQ8X (Sodium Chloride) SB - IM MH - Animals MH - Arginine Vasopressin/genetics/*metabolism MH - Channelrhodopsins MH - Female MH - Green Fluorescent Proteins/genetics MH - Male MH - Neurons/*metabolism/physiology MH - Optogenetics/*methods MH - Paraventricular Hypothalamic Nucleus/*metabolism MH - Pituitary Gland, Posterior/metabolism MH - Rats MH - Rats, Transgenic MH - Rats, Wistar MH - Sodium Chloride/administration & dosage MH - Supraoptic Nucleus/*metabolism/physiology OTO - NOTNLM OT - Arginine vasopressin OT - Channelrhodopsin 2 OT - Rat OT - Salt loading OT - Transgene OT - Whole-cell patch-clamp recording EDAT- 2016/08/06 06:00 MHDA- 2017/07/27 06:00 CRDT- 2016/08/06 06:00 PHST- 2016/06/21 00:00 [received] PHST- 2016/07/25 00:00 [revised] PHST- 2016/08/01 00:00 [accepted] PHST- 2016/08/06 06:00 [entrez] PHST- 2016/08/06 06:00 [pubmed] PHST- 2017/07/27 06:00 [medline] AID - S0304-3940(16)30564-X [pii] AID - 10.1016/j.neulet.2016.08.001 [doi] PST - ppublish SO - Neurosci Lett. 2016 Sep 6;630:194-198. doi: 10.1016/j.neulet.2016.08.001. Epub 2016 Aug 1.