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Kawakami N, Otubo A, Maejima S, Talukder AH, Satoh K, Oti T, Takanami K, Ueda Y, Itoi K, Morris JF, Sakamoto T, Sakamoto H. Variation of pro-vasopressin processing in parvocellular and magnocellular neurons in the paraventricular nucleus of the hypothalamus: Evidence from the vasopressin-related glycopeptide copeptin. J Comp Neurol 2021; 529:1372-1390. [PMID: 32892351 DOI: 10.1002/cne.25026] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2020] [Revised: 08/31/2020] [Accepted: 09/01/2020] [Indexed: 11/05/2022]
Abstract
Arginine vasopressin (AVP) is synthesized in parvocellular- and magnocellular neuroendocrine neurons in the paraventricular nucleus (PVN) of the hypothalamus. Whereas magnocellular AVP neurons project primarily to the posterior pituitary, parvocellular AVP neurons project to the median eminence (ME) and to extrahypothalamic areas. The AVP gene encodes pre-pro-AVP that comprises the signal peptide, AVP, neurophysin (NPII), and a copeptin glycopeptide. In the present study, we used an N-terminal copeptin antiserum to examine copeptin expression in magnocellular and parvocellular neurons in the hypothalamus in the mouse, rat, and macaque monkey. Although magnocellular NPII-expressing neurons exhibited strong N-terminal copeptin immunoreactivity in all three species, a great majority (~90%) of parvocellular neurons that expressed NPII was devoid of copeptin immunoreactivity in the mouse, and in approximately half (~53%) of them in the rat, whereas in monkey hypothalamus, virtually all NPII-immunoreactive parvocellular neurons contained strong copeptin immunoreactivity. Immunoelectron microscopy in the mouse clearly showed copeptin-immunoreactivity co-localized with NPII-immunoreactivity in neurosecretory vesicles in the internal layer of the ME and posterior pituitary, but not in the external layer of the ME. Intracerebroventricular administration of a prohormone convertase inhibitor, hexa-d-arginine amide resulted in a marked reduction of copeptin-immunoreactivity in the NPII-immunoreactive magnocellular PVN neurons in the mouse, suggesting that low protease activity and incomplete processing of pro-AVP could explain the disproportionally low levels of N-terminal copeptin expression in rodent AVP (NPII)-expressing parvocellular neurons. Physiologic and phylogenetic aspects of copeptin expression among neuroendocrine neurons require further exploration.
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Affiliation(s)
- Natsuko Kawakami
- Ushimado Marine Institute (UMI), Graduate School of Natural Science and Technology, Okayama University, Okayama, Japan.,Department of Biology, Faculty of Science, Okayama University, Okayama, Japan.,Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, UK
| | - Akito Otubo
- Ushimado Marine Institute (UMI), Graduate School of Natural Science and Technology, Okayama University, Okayama, Japan
| | - Sho Maejima
- Ushimado Marine Institute (UMI), Graduate School of Natural Science and Technology, Okayama University, Okayama, Japan
| | - Ashraf H Talukder
- Laboratory of Information Biology, Graduate School of Information Sciences, Tohoku University, Sendai, Miyagi, Japan
| | - Keita Satoh
- Ushimado Marine Institute (UMI), Graduate School of Natural Science and Technology, Okayama University, Okayama, Japan.,Department of Anatomy, Kawasaki Medical School, Okayama, Japan
| | - Takumi Oti
- Ushimado Marine Institute (UMI), Graduate School of Natural Science and Technology, Okayama University, Okayama, Japan.,Department of Biological Sciences, Faculty of Science, Kanagawa University, Hiratsuka, Kanagawa, Japan
| | - Keiko Takanami
- Ushimado Marine Institute (UMI), Graduate School of Natural Science and Technology, Okayama University, Okayama, Japan.,Mouse Genomics Resources Laboratory, National Institute of Genetics, Shizuoka, Japan
| | - Yasumasa Ueda
- Department of Physiology, Kyoto Prefectural University of Medicine, Kyoto, Japan.,Department of Physiology, Kansai Medical University, Osaka, Japan
| | - Keiichi Itoi
- Laboratory of Information Biology, Graduate School of Information Sciences, Tohoku University, Sendai, Miyagi, Japan
| | - John F Morris
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, UK
| | - Tatsuya Sakamoto
- Ushimado Marine Institute (UMI), Graduate School of Natural Science and Technology, Okayama University, Okayama, Japan
| | - Hirotaka Sakamoto
- Ushimado Marine Institute (UMI), Graduate School of Natural Science and Technology, Okayama University, Okayama, Japan.,Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, UK
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Aydin S, Eren M, Kuloglu T, Aydin S, Yilmaz M, Gul E, Kalayci M, Yel Y, Cakmak T, Bico S. Alteration of serum and cardiac tissue adropin, copeptin, irisin and TRPM2 expressions in DOX treated male rats. Biotech Histochem 2014; 90:197-205. [DOI: 10.3109/10520295.2014.977949] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
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Takase K, Oda S, Kuroda M, Funato H. Monoaminergic and neuropeptidergic neurons have distinct expression profiles of histone deacetylases. PLoS One 2013; 8:e58473. [PMID: 23469282 PMCID: PMC3587588 DOI: 10.1371/journal.pone.0058473] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2012] [Accepted: 02/05/2013] [Indexed: 11/18/2022] Open
Abstract
Monoaminergic and neuropeptidergic neurons regulate a wide variety of behaviors, such as feeding, sleep/wakefulness behavior, stress response, addiction, and social behavior. These neurons form neural circuits to integrate different modalities of behavioral and environmental factors, such as stress, maternal care, and feeding conditions. One possible mechanism for integrating environmental factors through the monoaminergic and neuropeptidergic neurons is through the epigenetic regulation of gene expression via altered acetylation of histones. Histone deacetylases (HDACs) play an important role in altering behavior in response to environmental factors. Despite increasing attention and the versatile roles of HDACs in a variety of brain functions and disorders, no reports have detailed the localization of the HDACs in the monoaminergic and neuropeptidergic neurons. Here, we examined the expression profile of the HDAC protein family from HDAC1 to HDAC11 in corticotropin-releasing hormone, oxytocin, vasopressin, agouti-related peptide (AgRP), pro-opiomelanocortin (POMC), orexin, histamine, dopamine, serotonin, and noradrenaline neurons. Immunoreactivities for HDAC1,-2,-3,-5,-6,-7,-9, and -11 were very similar among the monoaminergic and neuropeptidergic neurons, while the HDAC4, -8, and -10 immunoreactivities were clearly different among neuronal groups. HDAC10 expression was found in AgRP neurons, POMC neurons, dopamine neurons and noradrenaline neurons but not in other neuronal groups. HDAC8 immunoreactivity was detected in the cytoplasm of almost all histamine neurons with a pericellular pattern but not in other neuropeptidergic and monoaminergic neurons. Thus, the differential expression of HDACs in monoaminergic and neuropeptidergic neurons may be crucial for the maintenance of biological characteristics and may be altered in response to environmental factors.
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Affiliation(s)
- Kenkichi Takase
- Department of Anatomy, Toho University School of Medicine, Tokyo, Japan
| | - Satoko Oda
- Department of Anatomy, Toho University School of Medicine, Tokyo, Japan
| | - Masaru Kuroda
- Department of Anatomy, Toho University School of Medicine, Tokyo, Japan
| | - Hiromasa Funato
- Department of Anatomy, Toho University School of Medicine, Tokyo, Japan
- Center for Behavioral Molecular Genetics, University of Tsukuba, Tsukuba, Japan
- International Institute for Integrative Sleep Medicine, University of Tsukuba, Tsukuba, Japan
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