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Silveira LM, Tavares LRR, Baptista-de-Souza D, Carmona IM, Carneiro de Oliveira PE, Nunes-de-Souza RL, Canto-de-Souza A. Anterior cingulate cortex, but not amygdala, modulates the anxiogenesis induced by living with conspecifics subjected to chronic restraint stress in male mice. Front Behav Neurosci 2023; 16:1077368. [PMID: 36688134 PMCID: PMC9853544 DOI: 10.3389/fnbeh.2022.1077368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2022] [Accepted: 12/16/2022] [Indexed: 01/07/2023] Open
Abstract
Cohabitation with a partner undergoing chronic restraint stress (CRE) induces anxiogenic-like behaviors through emotional contagion. We hypothesized that the anterior cingulate cortex (ACC) and the amygdala would be involved in the modulation of this emotional process. This study investigated the role of the ACC and amygdala in empathy-like behavior (e.g., anxiety-like responses) induced by living with a mouse subjected to CRE. Male Swiss mice were housed in pairs for 14 days and then allocated into two groups: cagemate stress (one animal of the pair was subjected to 14 days of restraint stress) and cagemate control (no animal experienced stress). Twenty-four hours after the last stress session, cagemates had their brains removed for recording FosB labeling in the ACC and amygdala (Exp.1). In experiments 2 and 3, 24 h after the last stress session, the cagemates received 0.1 μL of saline or cobalt chloride (CoCl2 1 mM) into the ACC or amygdala, and then exposed to the elevated plus-maze (EPM) for recording anxiety. Results showed a decrease of FosB labeling in the ACC without changing immunofluorescence in the amygdala of stress cagemate mice. Cohabitation with mice subjected to CRE provoked anxiogenic-like behaviors. Local inactivation of ACC (but not the amygdala) reversed the anxiogenic-like effects induced by cohabitation with a partner undergoing CRE. These results suggest the involvement of ACC, but not the amygdala, in anxiety induced by emotional contagion.
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Affiliation(s)
- Lara Maria Silveira
- Psychobiology Group, Department of Psychology/Centro de Educação e Ciências Humanas (CECH), Universidade Federal de São Carlos, São Carlos, São Paulo, Brazil,Graduate Program in Psychology, Centro de Educação e Ciências Humanas (CECH)-Universidade Federal de São Carlos, São Paulo, Brazil
| | - Ligia Renata Rodrigues Tavares
- Psychobiology Group, Department of Psychology/Centro de Educação e Ciências Humanas (CECH), Universidade Federal de São Carlos, São Carlos, São Paulo, Brazil,Joint Graduate Program in Physiological Sciences, Universidade Federal de São Carlos (UFSCar)/Universidade Estadual Paulista (UNESP), São Carlos, São Paulo, Brazil
| | - Daniela Baptista-de-Souza
- Psychobiology Group, Department of Psychology/Centro de Educação e Ciências Humanas (CECH), Universidade Federal de São Carlos, São Carlos, São Paulo, Brazil,Laboratory of Pharmacology, School of Pharmaceutical Sciences, Universidade Estadual Paulista (UNESP), Araraquara, São Paulo, Brazil,Institute of Neuroscience and Behaviour, Ribeirão Preto, São Paulo, Brazil
| | - Isabela Miranda Carmona
- Psychobiology Group, Department of Psychology/Centro de Educação e Ciências Humanas (CECH), Universidade Federal de São Carlos, São Carlos, São Paulo, Brazil,Joint Graduate Program in Physiological Sciences, Universidade Federal de São Carlos (UFSCar)/Universidade Estadual Paulista (UNESP), São Carlos, São Paulo, Brazil
| | - Paulo Eduardo Carneiro de Oliveira
- Psychobiology Group, Department of Psychology/Centro de Educação e Ciências Humanas (CECH), Universidade Federal de São Carlos, São Carlos, São Paulo, Brazil,Graduate Program in Psychology, Centro de Educação e Ciências Humanas (CECH)-Universidade Federal de São Carlos, São Paulo, Brazil
| | - Ricardo Luiz Nunes-de-Souza
- Joint Graduate Program in Physiological Sciences, Universidade Federal de São Carlos (UFSCar)/Universidade Estadual Paulista (UNESP), São Carlos, São Paulo, Brazil,Laboratory of Pharmacology, School of Pharmaceutical Sciences, Universidade Estadual Paulista (UNESP), Araraquara, São Paulo, Brazil,Institute of Neuroscience and Behaviour, Ribeirão Preto, São Paulo, Brazil
| | - Azair Canto-de-Souza
- Psychobiology Group, Department of Psychology/Centro de Educação e Ciências Humanas (CECH), Universidade Federal de São Carlos, São Carlos, São Paulo, Brazil,Graduate Program in Psychology, Centro de Educação e Ciências Humanas (CECH)-Universidade Federal de São Carlos, São Paulo, Brazil,Joint Graduate Program in Physiological Sciences, Universidade Federal de São Carlos (UFSCar)/Universidade Estadual Paulista (UNESP), São Carlos, São Paulo, Brazil,Institute of Neuroscience and Behaviour, Ribeirão Preto, São Paulo, Brazil,*Correspondence: Azair Canto-de-Souza, ;
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Steiner P, Arlt E, Boekhoff I, Gudermann T, Zierler S. TPC Functions in the Immune System. Handb Exp Pharmacol 2023; 278:71-92. [PMID: 36639434 DOI: 10.1007/164_2022_634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/28/2023]
Abstract
Two-pore channels (TPCs) are novel intracellular cation channels, which play a key role in numerous (patho-)physiological and immunological processes. In this chapter, we focus on their function in immune cells and immune reactions. Therefore, we first give an overview of the cellular immune response and the partaking immune cells. Second, we concentrate on ion channels which in the past have been shown to play an important role in the regulation of immune cells. The main focus is then directed to TPCs, which are primarily located in the membranes of acidic organelles, such as lysosomes or endolysosomes but also certain other vesicles. They regulate Ca2+ homeostasis and thus Ca2+ signaling in immune cells. Due to this important functional role, TPCs are enjoying increasing attention within the field of immunology in the last few decades but are also becoming more pertinent as pharmacological targets for the treatment of pro-inflammatory diseases such as allergic hypersensitivity. However, to uncover the precise molecular mechanism of TPCs in immune cell responses, further molecular, genetic, and ultrastructural investigations on TPCs are necessary, which then may pave the way to develop novel therapeutic strategies to treat diseases such as anaphylaxis more specifically.
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Affiliation(s)
- Philip Steiner
- Institute of Pharmacology, Faculty of Medicine, Johannes Kepler University Linz, Linz, Austria
| | - Elisabeth Arlt
- Walther Straub Institute of Pharmacology and Toxicology, Faculty of Medicine, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Ingrid Boekhoff
- Walther Straub Institute of Pharmacology and Toxicology, Faculty of Medicine, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Thomas Gudermann
- Walther Straub Institute of Pharmacology and Toxicology, Faculty of Medicine, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Susanna Zierler
- Institute of Pharmacology, Faculty of Medicine, Johannes Kepler University Linz, Linz, Austria.
- Walther Straub Institute of Pharmacology and Toxicology, Faculty of Medicine, Ludwig-Maximilians-Universität München, Munich, Germany.
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53
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Lv J, Tang L, Zhang X, Wang D. Thermo-TRP channels are involved in BAT thermoregulation in cold-acclimated Brandt's voles. Comp Biochem Physiol B Biochem Mol Biol 2023; 263:110794. [PMID: 35964792 DOI: 10.1016/j.cbpb.2022.110794] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 08/02/2022] [Accepted: 08/08/2022] [Indexed: 10/15/2022]
Abstract
Transient receptor potential (TRP) channels, which can sense temperature, pressure and mechanical stimuli, were involved in many physiological and biochemical reactions. Whether thermosensitive TRP channels (Thermo-TRPs) are involved in thermoregulation in small mammals is still not clear. We measured the changes of thermo-TRPs at 4 °C, 23 °C and 30 °C in Brandt's voles (Lasiopodomys brandtii) to test the hypothesis that Thermo-TRPs are involved in cold-induced thermogenesis of brown adipose tissue (BAT) in small mammals. Results showed that air temperatures had no effect on body mass and rectal temperature, but the food intake and basal metabolic rate (BMR) in the 4 °C group were significantly higher than in the 30 °C group. Compared with 30 °C group, the protein contents of uncoupling protein 1(UCP1), TRP vanilloid 2 (TRPV2), TRP ankyrin 1 (TRPA1), TRP melastatin 2 (TRPM2), silent Information Regulator T1 (SIRT1), AMP-activated protein kinase (AMPK) and Calcium/calmodulin-dependent protein kinase II (CaMKII) in BAT increased significantly in 4 °C group, but there was no significant difference in the protein content of Thermo-TRPs in the hypothalamus among groups. Further, the expression of PRDM16 (PR domain containing 16) in inguinal white adipose tissue (iWAT) at 4 °C was significantly higher than that at 30 °C, but no difference was observed in the expression of other browning-related genes or TRPV2. In conclusion, TRP channels may participate in BAT thermoregulation through the CaMKII, AMPK, SIRT1 and UCP1 pathway in cold-acclimated Brandt's voles.
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Affiliation(s)
- Jinzhen Lv
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China; CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing 100049, China; Chengdu Institute of Food Inspection, Chengdu 611100, China
| | - Liqiu Tang
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China; CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xueying Zhang
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China; CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Dehua Wang
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China; School of Life Sciences, Shandong University, Qingdao 266237, China; CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing 100049, China.
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54
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Gaitonde KD, Andrabi M, Burger CA, D'Souza SP, Vemaraju S, Koritala BSC, Smith DF, Lang RA. Diurnal regulation of metabolism by Gs-alpha in hypothalamic QPLOT neurons. PLoS One 2023; 18:e0284824. [PMID: 37141220 PMCID: PMC10159165 DOI: 10.1371/journal.pone.0284824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Accepted: 04/09/2023] [Indexed: 05/05/2023] Open
Abstract
Neurons in the hypothalamic preoptic area (POA) regulate multiple homeostatic processes, including thermoregulation and sleep, by sensing afferent input and modulating sympathetic nervous system output. The POA has an autonomous circadian clock and may also receive circadian signals indirectly from the suprachiasmatic nucleus. We have previously defined a subset of neurons in the POA termed QPLOT neurons that are identified by the expression of molecular markers (Qrfp, Ptger3, LepR, Opn5, Tacr3) that suggest receptivity to multiple stimuli. Because Ptger3, Opn5, and Tacr3 encode G-protein coupled receptors (GPCRs), we hypothesized that elucidating the G-protein signaling in these neurons is essential to understanding the interplay of inputs in the regulation of metabolism. Here, we describe how the stimulatory Gs-alpha subunit (Gnas) in QPLOT neurons regulates metabolism in mice. We analyzed Opn5cre; Gnasfl/fl mice using indirect calorimetry at ambient temperatures of 22°C (a historical standard), 10°C (a cold challenge), and 28°C (thermoneutrality) to assess the ability of QPLOT neurons to regulate metabolism. We observed a marked decrease in nocturnal locomotion of Opn5cre; Gnasfl/fl mice at both 28°C and 22°C, but no overall differences in energy expenditure, respiratory exchange, or food and water consumption. To analyze daily rhythmic patterns of metabolism, we assessed circadian parameters including amplitude, phase, and MESOR. Loss-of-function GNAS in QPLOT neurons resulted in several subtle rhythmic changes in multiple metabolic parameters. We observed that Opn5cre; Gnasfl/fl mice show a higher rhythm-adjusted mean energy expenditure at 22°C and 10°C, and an exaggerated respiratory exchange shift with temperature. At 28°C, Opn5cre; Gnasfl/fl mice have a significant delay in the phase of energy expenditure and respiratory exchange. Rhythmic analysis also showed limited increases in rhythm-adjusted means of food and water intake at 22°C and 28°C. Together, these data advance our understanding of Gαs-signaling in preoptic QPLOT neurons in regulating daily patterns of metabolism.
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Affiliation(s)
- Kevin D Gaitonde
- Division of Pediatric Ophthalmology, Abrahamson Pediatric Eye Institute, Visual Systems Group, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States of America
- Science of Light Center, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States of America
- Molecular & Developmental Biology Graduate Program, University of Cincinnati, College of Medicine, Cincinnati, OH, United States of America
- Medical Scientist Training Program, University of Cincinnati, College of Medicine, Cincinnati, OH, United States of America
| | - Mutahar Andrabi
- Division of Pediatric Ophthalmology, Abrahamson Pediatric Eye Institute, Visual Systems Group, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States of America
- Science of Light Center, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States of America
- Department of Ophthalmology, College of Medicine, University of Cincinnati, Cincinnati, OH, United States of America
| | - Courtney A Burger
- Division of Pediatric Ophthalmology, Abrahamson Pediatric Eye Institute, Visual Systems Group, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States of America
- Science of Light Center, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States of America
- Department of Ophthalmology, College of Medicine, University of Cincinnati, Cincinnati, OH, United States of America
| | - Shane P D'Souza
- Division of Pediatric Ophthalmology, Abrahamson Pediatric Eye Institute, Visual Systems Group, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States of America
- Science of Light Center, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States of America
- Molecular & Developmental Biology Graduate Program, University of Cincinnati, College of Medicine, Cincinnati, OH, United States of America
| | - Shruti Vemaraju
- Division of Pediatric Ophthalmology, Abrahamson Pediatric Eye Institute, Visual Systems Group, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States of America
- Science of Light Center, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States of America
- Department of Ophthalmology, College of Medicine, University of Cincinnati, Cincinnati, OH, United States of America
| | - Bala S C Koritala
- Division of Pediatric Otolaryngology-Head and Neck Surgery, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States of America
- Department of Otolaryngology-Head and Neck Surgery, University of Cincinnati College of Medicine, Cincinnati, OH, United States of America
| | - David F Smith
- Division of Pediatric Otolaryngology-Head and Neck Surgery, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States of America
- Department of Otolaryngology-Head and Neck Surgery, University of Cincinnati College of Medicine, Cincinnati, OH, United States of America
- Division of Pulmonary Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States of America
- The Center for Circadian Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States of America
| | - Richard A Lang
- Division of Pediatric Ophthalmology, Abrahamson Pediatric Eye Institute, Visual Systems Group, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States of America
- Science of Light Center, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States of America
- Department of Ophthalmology, College of Medicine, University of Cincinnati, Cincinnati, OH, United States of America
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55
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Nakamura Y, Yahiro T, Fukushima A, Kataoka N, Hioki H, Nakamura K. Prostaglandin EP3 receptor-expressing preoptic neurons bidirectionally control body temperature via tonic GABAergic signaling. SCIENCE ADVANCES 2022; 8:eadd5463. [PMID: 36563142 PMCID: PMC9788766 DOI: 10.1126/sciadv.add5463] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Accepted: 11/08/2022] [Indexed: 05/30/2023]
Abstract
The bidirectional controller of the thermoregulatory center in the preoptic area (POA) is unknown. Using rats, here, we identify prostaglandin EP3 receptor-expressing POA neurons (POAEP3R neurons) as a pivotal bidirectional controller in the central thermoregulatory mechanism. POAEP3R neurons are activated in response to elevated ambient temperature but inhibited by prostaglandin E2, a pyrogenic mediator. Chemogenetic stimulation of POAEP3R neurons at room temperature reduces body temperature by enhancing heat dissipation, whereas inhibition of them elicits hyperthermia involving brown fat thermogenesis, mimicking fever. POAEP3R neurons innervate sympathoexcitatory neurons in the dorsomedial hypothalamus (DMH) via tonic (ceaseless) inhibitory signaling. Although many POAEP3R neuronal cell bodies express a glutamatergic messenger RNA marker, their axons in the DMH predominantly release γ-aminobutyric acid (GABA), and their GABAergic terminals are increased by chronic heat exposure. These findings demonstrate that tonic GABAergic inhibitory signaling from POAEP3R neurons is a fundamental determinant of body temperature for thermal homeostasis and fever.
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Affiliation(s)
- Yoshiko Nakamura
- Department of Integrative Physiology, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan
| | - Takaki Yahiro
- Department of Integrative Physiology, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan
| | - Akihiro Fukushima
- Department of Integrative Physiology, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan
| | - Naoya Kataoka
- Department of Integrative Physiology, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan
- Nagoya University Institute for Advanced Research, Nagoya 464-8601, Japan
| | - Hiroyuki Hioki
- Department of Neuroanatomy, Juntendo University Graduate School of Medicine, Tokyo 113-8421, Japan
| | - Kazuhiro Nakamura
- Department of Integrative Physiology, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan
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56
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Zhang Z, Shan L, Wang Y, Li W, Jiang M, Liang F, Feng S, Lu Z, Wang H, Dai J. Primate preoptic neurons drive hypothermia and cold defense. Innovation (N Y) 2022; 4:100358. [PMID: 36583100 PMCID: PMC9793322 DOI: 10.1016/j.xinn.2022.100358] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Accepted: 11/29/2022] [Indexed: 12/12/2022] Open
Abstract
Maintaining body temperature within a narrow range is vital for warm-blooded animals. In rodents, the preoptic area (POA) of the hypothalamus detects and regulates core body temperature. However, knowledge about the thermal regulation center in primates remains limited. Here, we show that activating a subpopulation of POA neurons by a chemogenetic strategy reliably induces hypothermia in anesthetized and freely moving macaques. Comprehensive monitoring of physiological parameters reveals that such hypothermia is accompanied by autonomic changes including a rise in heart rate, skeletal muscle activity, and correlated biomarkers in blood. Consistent with enhanced ambulatory movement during hypothermia, the animals show a full range of cold-defense behaviors. Resting-state fMRI confirms the chemogenetic activation of POA and charts a brain-wide network of thermoregulation. Altogether, our findings demonstrate the central regulation of body temperature in primates and pave the way for future application in clinical practice.
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Affiliation(s)
- Zhiting Zhang
- CAS Key Laboratory of Brain Connectome and Manipulation, the Brain Cognition and Brain Disease Institute (BCBDI), Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China,Shenzhen-Hong Kong Institute of Brain Science-Shenzhen Fundamental Research Institutions, Shenzhen 518055, China
| | - Liang Shan
- CAS Key Laboratory of Brain Connectome and Manipulation, the Brain Cognition and Brain Disease Institute (BCBDI), Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China,Shenzhen-Hong Kong Institute of Brain Science-Shenzhen Fundamental Research Institutions, Shenzhen 518055, China
| | - Yuyin Wang
- CAS Key Laboratory of Brain Connectome and Manipulation, the Brain Cognition and Brain Disease Institute (BCBDI), Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wenfang Li
- CAS Key Laboratory of Brain Connectome and Manipulation, the Brain Cognition and Brain Disease Institute (BCBDI), Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Minqing Jiang
- CAS Key Laboratory of Brain Connectome and Manipulation, the Brain Cognition and Brain Disease Institute (BCBDI), Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Feng Liang
- CAS Key Laboratory of Brain Connectome and Manipulation, the Brain Cognition and Brain Disease Institute (BCBDI), Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Shijing Feng
- CAS Key Laboratory of Brain Connectome and Manipulation, the Brain Cognition and Brain Disease Institute (BCBDI), Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Zhonghua Lu
- CAS Key Laboratory of Brain Connectome and Manipulation, the Brain Cognition and Brain Disease Institute (BCBDI), Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China,Shenzhen-Hong Kong Institute of Brain Science-Shenzhen Fundamental Research Institutions, Shenzhen 518055, China,University of Chinese Academy of Sciences, Beijing 100049, China,Shenzhen Technological Research Center for Primate Translational Medicine, Shenzhen 518055, China
| | - Hong Wang
- CAS Key Laboratory of Brain Connectome and Manipulation, the Brain Cognition and Brain Disease Institute (BCBDI), Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China,Shenzhen-Hong Kong Institute of Brain Science-Shenzhen Fundamental Research Institutions, Shenzhen 518055, China,University of Chinese Academy of Sciences, Beijing 100049, China,Shenzhen Key Laboratory of Drug Addiction, Shenzhen 518055, China,Corresponding author
| | - Ji Dai
- CAS Key Laboratory of Brain Connectome and Manipulation, the Brain Cognition and Brain Disease Institute (BCBDI), Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China,Shenzhen-Hong Kong Institute of Brain Science-Shenzhen Fundamental Research Institutions, Shenzhen 518055, China,University of Chinese Academy of Sciences, Beijing 100049, China,Shenzhen Technological Research Center for Primate Translational Medicine, Shenzhen 518055, China,Corresponding author
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57
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Sudbury JR, Zaelzer C, Trudel E, Bumagin A, Bourque CW. Synaptic control of rat magnocellular neurosecretory cells by warm-sensing neurons in the organum vasculosum lamina terminalis. J Neuroendocrinol 2022; 34:e13214. [PMID: 36426844 DOI: 10.1111/jne.13214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Revised: 10/07/2022] [Accepted: 10/27/2022] [Indexed: 11/11/2022]
Abstract
Increases in core body temperature cause secretion of vasopressin (vasopressin, antidiuretic hormone) to promote water reabsorption and blunt water losses incurred through homeostatic evaporative cooling. Subtypes of transient receptor potential vanilloid (Trpv) channels have been shown to contribute to the intrinsic regulation of vasopressin-releasing magnocellular neurosecretory cells (MNCs) in the supraoptic nucleus (SON) and paraventricular nucleus (PVN). However, MNCs in vivo can also be excited by local heating of the adjacent preoptic area, indicating they receive thermosensory information from other areas. Here, we investigated whether neurons in the organum vasculosum lamina terminalis (OVLT) contribute to this process using in vitro electrophysiological approaches in male rats. We found that the majority of OVLT neurons are thermosensitive in the physiological range (36-39°C) and that this property is retained under conditions blocking synaptic transmission. A subset of these neurons could be antidromically activated by electrical stimulation in the SON. Whole cell recordings from SON MNCs revealed that heating significantly increases the rate of spontaneous excitatory postsynaptic currents (sEPCSs), and that this response is abolished by lesions targeting the OVLT, but not by bilateral lesions placed in the adjacent preoptic area. Finally, local heating of the OVLT caused a significant excitation of MNCs in the absence of temperature changes in the SON, and this effect was blocked by inhibitors of ionotropic glutamate receptors. These findings indicate that the OVLT serves as an important thermosensory nucleus and contributes to the activation of MNCs during physiological heating.
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Affiliation(s)
- Jessica R Sudbury
- Brain Repair and Integrative Neuroscience Program, Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada
| | - Cristian Zaelzer
- Brain Repair and Integrative Neuroscience Program, Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada
| | - Eric Trudel
- Brain Repair and Integrative Neuroscience Program, Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada
| | - Anna Bumagin
- Brain Repair and Integrative Neuroscience Program, Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada
| | - Charles W Bourque
- Brain Repair and Integrative Neuroscience Program, Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada
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58
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Dual amplification strategy turns TRPM2 channels into supersensitive central heat detectors. Proc Natl Acad Sci U S A 2022; 119:e2212378119. [PMID: 36409885 PMCID: PMC9881722 DOI: 10.1073/pnas.2212378119] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The Ca2+ and ADP ribose (ADPR)-activated cation channel TRPM2 is the closest homolog of the cold sensor TRPM8 but serves as a deep-brain warmth sensor. To unravel the molecular mechanism of heat sensing by the TRPM2 protein, we study here temperature dependence of TRPM2 currents in cell-free membrane patches across ranges of agonist concentrations. We find that channel gating remains strictly agonist-dependent even at 40°C: heating alone or in combination with just Ca2+, just ADPR, Ca2+ + cyclic ADPR, or H2O2 pretreatment only marginally activates TRPM2. For fully liganded TRPM2, pore opening is intrinsically endothermic, due to ~10-fold larger activation enthalpy for opening (~200 kJ/mol) than for closure (~20 kJ/mol). However, the temperature threshold is too high (>40°C) for unliganded but too low (<15°C) for fully liganded channels. Thus, warmth sensitivity around 37°C is restricted to narrow ranges of agonist concentrations. For ADPR, that range matches, but for Ca2+, it exceeds bulk cytosolic values. The supraphysiological [Ca2+] needed for TRPM2 warmth sensitivity is provided by Ca2+ entering through the channel's pore. That positive feedback provides further strong amplification to the TRPM2 temperature response (Q10 ~ 1,000), enabling the TRPM2 protein to autonomously respond to tiny temperature fluctuations around 37°C. These functional data together with published structures suggest a molecular mechanism for opposite temperature dependences of two closely related channel proteins.
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Thermoregulatory heat-escape/cold-seeking behavior in mice and the influence of TRPV1 channels. PLoS One 2022; 17:e0276748. [DOI: 10.1371/journal.pone.0276748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Accepted: 10/12/2022] [Indexed: 11/17/2022] Open
Abstract
The present study assessed heat-escape/cold-seeking behavior during thermoregulation in mice and the influence of TRPV1 channels. Mice received subcutaneous injection of capsaicin (50 mg/kg; CAP group) for desensitization of TRPV1 channels or vehicle (control [CON] group). In Experiment 1, heat-escape/cold-seeking behavior was assessed using a newly developed system comprising five temperature-controlled boards placed in a cross-shape. Each mouse completed three 90-min trials. In the trials, the four boards, including the center board, were set at either 36˚C, 38˚C, or 40˚C, while one corner board was set at 32˚C, which was rotated every 5 min. In Experiment 2, mice were exposed to an ambient temperature of 37˚C for 30 min. cFos expression in the preoptic area of the hypothalamus (POA) was assessed. In Experiment 1, the CON group stayed on the 32˚C board for the longest duration relative to that on other boards, and intra-abdominal temperature (Tabd) was maintained. In the CAP group, no preference for the 32˚C board was observed, and Tabd increased. In Experiment 2, cFos expression in the POA decreased in the CAP group. Capsaicin-induced desensitization of TRPV1 channels suppressed heat-escape/cold-seeking behavior in mice during heat exposure, resulting in hyperthermia. In conclusion, our findings suggest that heat sensation from the body surface may be a key inducer of thermoregulatory behaviors in mice.
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Hypothermia evoked by stimulation of medial preoptic nucleus protects the brain in a mouse model of ischaemia. Nat Commun 2022; 13:6890. [PMID: 36371436 PMCID: PMC9653397 DOI: 10.1038/s41467-022-34735-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Accepted: 11/04/2022] [Indexed: 11/13/2022] Open
Abstract
Therapeutic hypothermia at 32-34 °C during or after cerebral ischaemia is neuroprotective. However, peripheral cold sensor-triggered hypothermia is ineffective and evokes vigorous counteractive shivering thermogenesis and complications that are difficult to tolerate in awake patients. Here, we show in mice that deep brain stimulation (DBS) of warm-sensitive neurones (WSNs) in the medial preoptic nucleus (MPN) produces tolerable hypothermia. In contrast to surface cooling-evoked hypothermia, DBS mice exhibit a torpor-like state without counteractive shivering. Like hypothermia evoked by chemogenetic activation of WSNs, DBS in free-moving mice elicits a rapid lowering of the core body temperature to 32-34 °C, which confers significant brain protection and motor function reservation. Mechanistically, activation of WSNs contributes to DBS-evoked hypothermia. Inhibition of WSNs prevents DBS-evoked hypothermia. Maintaining the core body temperature at normothermia during DBS abolishes DBS-mediated brain protection. Thus, the MPN is a DBS target to evoke tolerable therapeutic hypothermia for stroke treatment.
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Luo Y, Chen S, Wu F, Jiang C, Fang M. The identification of the key residues E829 and R845 involved in transient receptor potential melastatin 2 channel gating. Front Aging Neurosci 2022; 14:1033434. [DOI: 10.3389/fnagi.2022.1033434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 10/03/2022] [Indexed: 11/13/2022] Open
Abstract
Transient receptor potential melastatin 2 (TRPM2), a non-selective cation channel, is involved in many physiological and pathological processes, including temperature sensing, synaptic plasticity regulation, and neurodegenerative diseases. However, the gating mechanism of TRPM2 channel is complex, which hinders its functional research. With the discovery of the Ca2+ binding site in the S2–S3 domain of TRPM2 channel, more and more attention has been drawn to the role of the transmembrane segments in channel gating. In this study, we focused on the D820-F867 segment around the S2 domain, and identified the key residues on it. Functional assays of the deletion mutants displayed that the deletions of D820-W835 and L836-P851 destroyed channel function totally, indicating the importance of these two segments. Sequence alignments on them found three polar and charged residues with high conservation (D820, E829, and R845). D820A, E829A, and R845A which removed the charge and the side chain of the residues were tested by 500 μM adenosine diphosphate-ribose (ADPR) or 50 mM Ca2+. E829A and R845A affected the characteristic of channel currents, while D820A behaved similarly to WT, indicating the participations of E829 and R845 in channel gating. The charge reversing mutants, E829K and R845D were then constructed and the electrophysiological tests showed that E829A and E829K made the channel lose function. Interestingly, R845A and R845D exhibited an inactivation process when using 500 μM ADPR, but activated normally by 50 mM Ca2+. Our data suggested that the negative charge at E829 took a vital part in channel activation, and R845 increased the stability of the Ca2+ combination in S2-S3 domain, thus guaranteeing the opening of TRPM2 channel. In summary, our identification of the key residues E829 and R845 in the transmembrane segments of TRPM2. By exploring the gating process of TRPM2 channel, our work helps us better understand the mechanism of TRPM2 as a potential biomarker in neurodegenerative diseases, and provides a new approach for the prediction, diagnosis, and prognosis of neurodegenerative diseases.
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Sun Y, Wang H, Wang W, Lu J, Zhang J, Luo X, Luan L, Wang K, Jia J, Yan J, Qin L. Glutamatergic and GABAergic neurons in the preoptic area of the hypothalamus play key roles in menopausal hot flashes. Front Aging Neurosci 2022; 14:993955. [PMID: 36313017 PMCID: PMC9614233 DOI: 10.3389/fnagi.2022.993955] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Accepted: 09/23/2022] [Indexed: 11/21/2022] Open
Abstract
During menopause, when estrogen levels are low, abnormalities in the hypothalamic preoptic area (POA) of the thermoregulatory center can cause hot flashes. However, the involved neural population has not been identified. Proteomics showed that under low estrogen, differentially expressed proteins in the hypothalamus were associated with glutamatergic and GABAergic synapses. RNAscope, Western blotting and qRT-PCR indicated that the number of glutamatergic neurons in the POA was decreased, while the number of GABAergic neurons was increased. Chemogenetics showed that the rat body temperature decreased slowly after glutamatergic neurons were activated and increased quickly after glutamatergic neurons were inhibited, while it increased quickly after GABAergic neurons were activated and decreased slowly after GABAergic neurons were inhibited. RNAscope, immunofluorescence, Western blotting and qRT-PCR further showed that glutamate decarboxylase (GAD) 1 expression in the POA was increased, while GAD2 expression in the POA was decreased; that thermosensitive transient receptor potential protein (ThermoTRP) M (TRPM) 2 expression in glutamatergic neurons was decreased, while TRPM8 expression in GABAergic neurons was increased; and that estrogen receptor (ER) α and β expression in the POA was decreased, and ERα and ERβ expressed in both glutamatergic and GABAergic neurons. Estrogen therapy corrected these abnormalities. In addition, CUT&Tag and Western blot after injection of agonists and inhibitors of ERs showed that ERα and ERβ were both transcription factors in glutamatergic and GABAergic synapses. Mechanistically, during menopause, estrogen may regulate the transcription and expression of GADs and ThermoTRPs through ERs, impacting the number and function of glutamatergic and GABAergic neurons, resulting in unbalanced heat dissipation and production in the POA and ultimately triggering hot flashes.
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Affiliation(s)
- Yanrong Sun
- Department of Human Anatomy, Histology and Embryology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
| | - Hanfei Wang
- Department of Human Anatomy, Histology and Embryology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
| | - Wenjuan Wang
- Department of Human Anatomy, Histology and Embryology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
| | - Jiali Lu
- Department of Stomatology, Shanxi Medical University School and Hospital of Stomatology, Taiyuan, Shanxi, China
| | - Jinglin Zhang
- Department of Stomatology, Shanxi Medical University School and Hospital of Stomatology, Taiyuan, Shanxi, China
| | - Xiaofeng Luo
- Department of Stomatology, Shanxi Medical University School and Hospital of Stomatology, Taiyuan, Shanxi, China
| | - Liju Luan
- Department of Human Anatomy, Histology and Embryology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
| | - Ke Wang
- Department of Human Anatomy, Histology and Embryology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
| | - Jing Jia
- Department of Stomatology, Shanxi Medical University School and Hospital of Stomatology, Taiyuan, Shanxi, China
- Department of Stomatology, The Third Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Junhao Yan
- Department of Human Anatomy, Histology and Embryology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
- Beijing Key Lab of Magnetic Resonance Imaging Technology, Peking University Third Hospital, Beijing, China
| | - Lihua Qin
- Department of Human Anatomy, Histology and Embryology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
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Kashio M, Masubuchi S, Tominaga M. Protein kinase C-mediated phosphorylation of transient receptor potential melastatin type 2 Thr738 counteracts the effect of cytosolic Ca 2+ and elevates the temperature threshold. J Physiol 2022; 600:4287-4302. [PMID: 36042566 PMCID: PMC9826287 DOI: 10.1113/jp283350] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Accepted: 08/26/2022] [Indexed: 01/11/2023] Open
Abstract
The transient receptor potential melastatin type 2 (TRPM2) channel is a non-selective cation channel that has high Ca2+ permeability. TRPM2 is sensitive to warm temperatures and is expressed in cells and tissues that are maintained at core body temperature. TRPM2 activity is also regulated by endogenous factors including redox signalling, cytosolic Ca2+ and adenosine diphosphate ribose. As a result of its wide expression and function at core body temperature, these endogenous factors could regulate TRPM2 activity at body temperature under physiological and pathophysiological conditions. We previously reported that cellular redox signalling can lower TRPM2 temperature thresholds, although the mechanism that regulates these thresholds is unclear. Here, we used biochemical and electrophysiological techniques to explore another regulatory mechanism for TRPM2 temperature thresholds that is mediated by TRPM2 phosphorylation. Our results show that: (1) the temperature threshold for TRPM2 activation is lowered by cytosolic Ca2+ ; (2) protein kinase C-mediated phosphorylation of TRPM2 counteracts the effect of cytosolic Ca2+ ; and (3) Thr738 in mouse TRPM2 that lies near the Ca2+ binding site in the cytosolic cleft of the transmembrane domain is a potential phosphorylation site that may be involved in phosphorylation-mediated elevation of TRPM2 thresholds. These findings provide structure-based evidence to understand how temperature thresholds of thermo-sensitive TRP channels (thermo-TRPs) are determined and regulated. KEY POINTS: The transient receptor potential melastatin type 2 (TRPM2) ion channel is temperature-sensitive and Ca2+ -permeable. Endogenous factors and pathways such as redox signalling can regulate TRPM2 activity at body temperature under physiological and pathophysiological conditions. In the present study, we report the novel finding that cytosolic Ca2+ lowers the temperature threshold for TRPM2 activation in a concentration-dependent manner. Protein kinase C-mediated phosphorylation of TRPM2 at amino acid Thr782 elevates the temperature threshold for activation by counteracting the effects of cytosolic Ca2+ . These findings provide structure-based evidence to understand how temperature thresholds of thermo-sensitive TRP channels are determined and regulated.
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Affiliation(s)
- Makiko Kashio
- Division of Cell SignalingNational Institute for Physiological SciencesNational Institutes for Natural SciencesOkazakiAichiJapan
| | - Satoru Masubuchi
- Department of PhysiologyAichi Medical UniversityNagakuteAichiJapan
| | - Makoto Tominaga
- Division of Cell SignalingNational Institute for Physiological SciencesNational Institutes for Natural SciencesOkazakiAichiJapan,Thermal Biology GroupExploratory Research Center on Life and Living Systems (ExCELLS)National Institutes of Natural SciencesOkazakiAichiJapan
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64
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Zeng W, Yang F, Shen WL, Zhan C, Zheng P, Hu J. Interactions between central nervous system and peripheral metabolic organs. SCIENCE CHINA. LIFE SCIENCES 2022; 65:1929-1958. [PMID: 35771484 DOI: 10.1007/s11427-021-2103-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 04/07/2022] [Indexed: 02/08/2023]
Abstract
According to Descartes, minds and bodies are distinct kinds of "substance", and they cannot have causal interactions. However, in neuroscience, the two-way interaction between the brain and peripheral organs is an emerging field of research. Several lines of evidence highlight the importance of such interactions. For example, the peripheral metabolic systems are overwhelmingly regulated by the mind (brain), and anxiety and depression greatly affect the functioning of these systems. Also, psychological stress can cause a variety of physical symptoms, such as bone loss. Moreover, the gut microbiota appears to play a key role in neuropsychiatric and neurodegenerative diseases. Mechanistically, as the command center of the body, the brain can regulate our internal organs and glands through the autonomic nervous system and neuroendocrine system, although it is generally considered to be outside the realm of voluntary control. The autonomic nervous system itself can be further subdivided into the sympathetic and parasympathetic systems. The sympathetic division functions a bit like the accelerator pedal on a car, and the parasympathetic division functions as the brake. The high center of the autonomic nervous system and the neuroendocrine system is the hypothalamus, which contains several subnuclei that control several basic physiological functions, such as the digestion of food and regulation of body temperature. Also, numerous peripheral signals contribute to the regulation of brain functions. Gastrointestinal (GI) hormones, insulin, and leptin are transported into the brain, where they regulate innate behaviors such as feeding, and they are also involved in emotional and cognitive functions. The brain can recognize peripheral inflammatory cytokines and induce a transient syndrome called sick behavior (SB), characterized by fatigue, reduced physical and social activity, and cognitive impairment. In summary, knowledge of the biological basis of the interactions between the central nervous system and peripheral organs will promote the full understanding of how our body works and the rational treatment of disorders. Thus, we summarize current development in our understanding of five types of central-peripheral interactions, including neural control of adipose tissues, energy expenditure, bone metabolism, feeding involving the brain-gut axis and gut microbiota. These interactions are essential for maintaining vital bodily functions, which result in homeostasis, i.e., a natural balance in the body's systems.
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Affiliation(s)
- Wenwen Zeng
- Institute for Immunology, and Department of Basic Medical Sciences, School of Medicine, Tsinghua University, Beijing, 100084, China. .,Tsinghua-Peking Center for Life Sciences, Beijing, 100084, China. .,Beijing Key Laboratory for Immunological Research on Chronic Diseases, Beijing, 100084, China.
| | - Fan Yang
- The Brain Cognition and Brain Disease Institute, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen-Hong Kong Institute of Brain Science-Shenzhen Fundamental Research Institutions, Shenzhen, 518055, China.
| | - Wei L Shen
- School of Life Science and Technology, ShanghaiTech University, Shanghai, 201210, China.
| | - Cheng Zhan
- Department of Hematology, The First Affiliated Hospital of USTC, Hefei National Laboratory for Physical Sciences at the Microscale, School of Life Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230026, China. .,National Institute of Biological Sciences, Beijing, 102206, China. .,Tsinghua Institute of Multidisciplinary Biomedical Research, Tsinghua University, Beijing, 100084, China.
| | - Peng Zheng
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400042, China. .,Institute of Neuroscience and the Collaborative Innovation Center for Brain Science, Chongqing Medical University, Chongqing, 400016, China. .,Chongqing Key Laboratory of Neurobiology, Chongqing, 400016, China.
| | - Ji Hu
- School of Life Science and Technology, ShanghaiTech University, Shanghai, 201210, China
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65
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Cramer MN, Gagnon D, Laitano O, Crandall CG. Human temperature regulation under heat stress in health, disease, and injury. Physiol Rev 2022; 102:1907-1989. [PMID: 35679471 PMCID: PMC9394784 DOI: 10.1152/physrev.00047.2021] [Citation(s) in RCA: 65] [Impact Index Per Article: 32.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 05/10/2022] [Accepted: 05/28/2022] [Indexed: 12/30/2022] Open
Abstract
The human body constantly exchanges heat with the environment. Temperature regulation is a homeostatic feedback control system that ensures deep body temperature is maintained within narrow limits despite wide variations in environmental conditions and activity-related elevations in metabolic heat production. Extensive research has been performed to study the physiological regulation of deep body temperature. This review focuses on healthy and disordered human temperature regulation during heat stress. Central to this discussion is the notion that various morphological features, intrinsic factors, diseases, and injuries independently and interactively influence deep body temperature during exercise and/or exposure to hot ambient temperatures. The first sections review fundamental aspects of the human heat stress response, including the biophysical principles governing heat balance and the autonomic control of heat loss thermoeffectors. Next, we discuss the effects of different intrinsic factors (morphology, heat adaptation, biological sex, and age), diseases (neurological, cardiovascular, metabolic, and genetic), and injuries (spinal cord injury, deep burns, and heat stroke), with emphasis on the mechanisms by which these factors enhance or disturb the regulation of deep body temperature during heat stress. We conclude with key unanswered questions in this field of research.
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Affiliation(s)
- Matthew N Cramer
- Defence Research and Development Canada-Toronto Research Centre, Toronto, Ontario, Canada
| | - Daniel Gagnon
- Montreal Heart Institute and School of Kinesiology and Exercise Science, Université de Montréal, Montréal, Quebec, Canada
| | - Orlando Laitano
- Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, Florida
| | - Craig G Crandall
- Institute for Exercise and Environmental Medicine, Texas Health Presbyterian Hospital Dallas and University of Texas Southwestern Medical Center, Dallas, Texas
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66
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Horikawa R, Oe Y, Fujii R, Kasuga R, Yoshimura R, Miyata S. Effects of peripheral administration of lipopolysaccharide on chronic sickness responses in TRPM8-deficient mice. Neurosci Lett 2022; 790:136895. [PMID: 36191793 DOI: 10.1016/j.neulet.2022.136895] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2022] [Revised: 09/25/2022] [Accepted: 09/27/2022] [Indexed: 10/31/2022]
Abstract
Transient receptor potential melastatin 8 (TRPM8) is a cold-sensing thermoreceptor cation channel; however, its functional role in endotoxin-induced neuroinflammation remains unclear. In the present study, we investigated chronic sickness responses in TRPM8 knockout (KO) mice during lipopolysaccharide (LPS)-induced sepsis. The intraperitoneal administration of 5 mg/kg LPS generated longer-lasting hypothermia in TRPM8 KO mice than in wild-type (WT) mice. TRPM8 KO mice also exhibited longer-lasting declines in locomotor activity, body weight, and food and water intakes than WT mice upon LPS administration. In addition, LPS-induced decreases in the numbers of leucocytes and lymphocytes that persisted for a longer time in TRPM8 KO mice than in WT mice. The present results indicate TRPM8 attenuated chronic sickness responses in endotoxin-induced sepsis.
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Affiliation(s)
- Ririka Horikawa
- Department of Applied Biology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Yuzuki Oe
- Department of Applied Biology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Rena Fujii
- Department of Applied Biology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Rika Kasuga
- Department of Applied Biology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Ryoichi Yoshimura
- Department of Applied Biology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Seiji Miyata
- Department of Applied Biology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan.
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67
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Singh D. Astrocytic and microglial cells as the modulators of neuroinflammation in Alzheimer's disease. J Neuroinflammation 2022; 19:206. [PMID: 35978311 PMCID: PMC9382837 DOI: 10.1186/s12974-022-02565-0] [Citation(s) in RCA: 110] [Impact Index Per Article: 55.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Accepted: 08/06/2022] [Indexed: 12/17/2022] Open
Abstract
Neuroinflammation is instigated by the misfiring of immune cells in the central nervous system (CNS) involving microglia and astrocytes as key cell-types. Neuroinflammation is a consequence of CNS injury, infection, toxicity, or autoimmunity. It is favorable as well as a detrimental process for neurodevelopment and associated processes. Transient activation of inflammatory response involving release of cytokines and growth factors positively affects the development and post-injury tissue. However, chronic or uncontrolled inflammatory responses may lead to various neurodegenerative diseases, including Alzheimer's disease (AD), Parkinson's disease (PD), amyotrophic lateral sclerosis, and multiple sclerosis. These diseases have variable clinical and pathological features, but are underlaid by the aggregation of misfolded proteins with a cytotoxic effect. Notably, abnormal activation of glial cells could mediate neuroinflammation, leading to the neurodegenerative condition. Microglia, a type of glial cell, a resident immune cell, form the forefront defense of the CNS immune system. Dysfunctional microglia and astrocyte, a different kind of glial cell with homeostatic function, impairs the protein aggregate (amyloid-beta plaque) clearance in AD. Studies have shown that microglia and astrocytes undergo alterations in their genetic profile, cellular and molecular responses, and thus promote dysfunctional immune cross-talk in AD. Hence, targeting microglia and astrocytes-driven molecular pathways could resolve the particular layers of neuroinflammation and set a reliable therapeutic intervention in AD progression.
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Affiliation(s)
- Deepali Singh
- National Brain Research Centre, Manesar, Haryana, 122052, India.
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68
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Xu P, Lin H, Jiao H, Zhao J, Wang X. Advances in epigenetic mechanisms of chick embryo heat acclimation. WORLD POULTRY SCI J 2022. [DOI: 10.1080/00439339.2022.2094845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Affiliation(s)
- Peng Xu
- College of Animal Science & Technology, Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Agricultural University, Taian, Shandong, China
| | - Hai Lin
- College of Animal Science & Technology, Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Agricultural University, Taian, Shandong, China
| | - Hongchao Jiao
- College of Animal Science & Technology, Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Agricultural University, Taian, Shandong, China
| | - Jingpeng Zhao
- College of Animal Science & Technology, Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Agricultural University, Taian, Shandong, China
| | - Xiaojuan Wang
- College of Animal Science & Technology, Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Agricultural University, Taian, Shandong, China
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69
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Wang H, Cheng L, Han Y. Effect of oral administration of GABA on thermoregulation in athletes during exercise in cold environments: A preliminary study. Front Nutr 2022; 9:883571. [PMID: 35911099 PMCID: PMC9335056 DOI: 10.3389/fnut.2022.883571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 06/27/2022] [Indexed: 11/21/2022] Open
Abstract
Background γ-aminobutyric acid (GABA), a common ingredient in sports supplements and other health products, regulates body temperature in the preoptic area and anterior hypothalamus (PO/AH). To date, no study has examined the effect of GABA on thermoregulation during exercise in humans in a cold temperature environment (11 ± 0.3°C, 45% ± 2% relative humidity). Methods We performed a randomized, double-blind study. Ten trained male athletes consumed either a drink (3 ml/kg weight) containing GABA (1,000 mg, trial G) or an equivalent amount of placebo drink (trial C) before exercise. They rested for 20 min and then cycled at 60% of maximum output power for 40 min, pedaling at 60 rpm, and recovered for 20 min. Core temperature (Tc), skin temperature (upper arm, chest, thigh, calf), and heart rate (HR) were monitored at rest (T0), exercise begins (T20), 20 min of exercise (T40), the exercise ends (T60), and at recovery (T80). Results Compared to T0, Tc decreased significantly at T20 and increased significantly at T40, T60 and T80 (p < 0.01). From 35–80 min, the Tc was higher in trial G (peaked at 37.96 ± 0.25°C) than in trial C (37.89 ± 0.37°C), but it failed to reach significant difference (p > 0.05); Tsk continued to increase during exercise and was significantly higher than T0 at T40 (p < 0.05), T60 and T80 (p < 0.01). There was no significant difference in Tsk between the two trials (p > 0.05). Conclusion Our findings provide initial evidence that oral administration of GABA does not affect thermoregulation and has no adverse effects on the body as an ergogenic exercise supplement during exercise in cold environments.
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70
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Kashio M, Tominaga M. TRP channels in thermosensation. Curr Opin Neurobiol 2022; 75:102591. [PMID: 35728275 DOI: 10.1016/j.conb.2022.102591] [Citation(s) in RCA: 44] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 05/18/2022] [Accepted: 05/20/2022] [Indexed: 11/15/2022]
Abstract
The ability to sense external temperature is assumed by somatosensory neurons, in which temperature information is converted to neural activity by afferent input to the central nervous system. Somatosensory neurons consist of various populations with specialized gene expression, including thermosensitive transient receptor potential ion channels (thermo-TRPs). Thermo-TRPs are responsible for thermal transduction at the peripheral ends of somatosensory neurons and over a wide range of temperatures. In this review, we focus on several thermo-TRPs expressed in sensory neurons: TRPV1, TRPV4, TRPM2, TRPM3, TRPM8, TRPC5, and TRPA1. TRPV3, TRPV4, and TRPC5 expressed in non-neuronal cells that are also involved in somatosensation are also discussed, whereas TRPM2 and TRPM8 are involved in thermosensation in the brain.
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Affiliation(s)
- Makiko Kashio
- Division of Cell Signaling, National Institute for Physiological Sciences, National Institutes of Natural Sciences, Okazaki, Japan; Thermal Biology Group, Exploratory Research Center on Life and Living Systems (ExCELLS), National Institutes of Natural Sciences, Okazaki, Japan; Department of Physiological Sciences, The Graduate University for Advanced Studies (SOKENDAI), Okazaki, Japan.
| | - Makoto Tominaga
- Division of Cell Signaling, National Institute for Physiological Sciences, National Institutes of Natural Sciences, Okazaki, Japan; Thermal Biology Group, Exploratory Research Center on Life and Living Systems (ExCELLS), National Institutes of Natural Sciences, Okazaki, Japan; Department of Physiological Sciences, The Graduate University for Advanced Studies (SOKENDAI), Okazaki, Japan; Institute for Environmental and Gender-Specific Medicine, Juntendo University, Chiba, Japan.
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71
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Los B, Preußner M, Eschke K, Vidal RM, Abdelgawad A, Olofsson D, Keiper S, Paulo-Pedro M, Grindel A, Meinke S, Trimpert J, Heyd F. Body temperature variation controls pre-mRNA processing and transcription of antiviral genes and SARS-CoV-2 replication. Nucleic Acids Res 2022; 50:6769-6785. [PMID: 35713540 PMCID: PMC9262603 DOI: 10.1093/nar/gkac513] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 05/07/2022] [Accepted: 05/31/2022] [Indexed: 12/24/2022] Open
Abstract
Antiviral innate immunity represents the first defense against invading viruses and is key to control viral infections, including SARS-CoV-2. Body temperature is an omnipresent variable but was neglected when addressing host defense mechanisms and susceptibility to SARS-CoV-2 infection. Here, we show that increasing temperature in a 1.5°C window, between 36.5 and 38°C, strongly increases the expression of genes in two branches of antiviral immunity, nitric oxide production and type I interferon response. We show that alternative splicing coupled to nonsense-mediated decay decreases STAT2 expression in colder conditions and suggest that increased STAT2 expression at elevated temperature induces the expression of diverse antiviral genes and SARS-CoV-2 restriction factors. This cascade is activated in a remarkably narrow temperature range below febrile temperature, which reflects individual, circadian and age-dependent variation. We suggest that decreased body temperature with aging contributes to reduced expression of antiviral genes in older individuals. Using cell culture and in vivo models, we show that higher body temperature correlates with reduced SARS-CoV-2 replication, which may affect the different vulnerability of children versus seniors toward severe SARS-CoV-2 infection. Altogether, our data connect body temperature and pre-mRNA processing to provide new mechanistic insight into the regulation of antiviral innate immunity.
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Affiliation(s)
- Bruna Los
- Laboratory of RNA Biochemistry, Institute of Chemistry and Biochemistry, Freie Universität Berlin, Takustrasse 6, 14195 Berlin, Germany
| | - Marco Preußner
- Laboratory of RNA Biochemistry, Institute of Chemistry and Biochemistry, Freie Universität Berlin, Takustrasse 6, 14195 Berlin, Germany
| | - Kathrin Eschke
- Omiqa Bioinformatics, Altensteinstraße 40, 14195 Berlin, Germany
| | | | - Azza Abdelgawad
- Omiqa Bioinformatics, Altensteinstraße 40, 14195 Berlin, Germany
| | - Didrik Olofsson
- Institute of Virology, Freie Universität Berlin, Robert-von-Ostertag-Straße 7-13, 14163 Berlin, Germany
| | - Sandra Keiper
- Laboratory of RNA Biochemistry, Institute of Chemistry and Biochemistry, Freie Universität Berlin, Takustrasse 6, 14195 Berlin, Germany
| | - Margarida Paulo-Pedro
- Laboratory of RNA Biochemistry, Institute of Chemistry and Biochemistry, Freie Universität Berlin, Takustrasse 6, 14195 Berlin, Germany
| | - Alica Grindel
- Laboratory of RNA Biochemistry, Institute of Chemistry and Biochemistry, Freie Universität Berlin, Takustrasse 6, 14195 Berlin, Germany
| | - Stefan Meinke
- Laboratory of RNA Biochemistry, Institute of Chemistry and Biochemistry, Freie Universität Berlin, Takustrasse 6, 14195 Berlin, Germany
| | - Jakob Trimpert
- Omiqa Bioinformatics, Altensteinstraße 40, 14195 Berlin, Germany
| | - Florian Heyd
- To whom correspondence should be addressed. Tel: +49 30 83862938; Fax: +49 30 838 4 62938;
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Ujisawa T, Sasajima S, Kashio M, Tominaga M. Thermal gradient ring reveals different temperature-dependent behaviors in mice lacking thermosensitive TRP channels. J Physiol Sci 2022; 72:11. [PMID: 35624442 PMCID: PMC10717490 DOI: 10.1186/s12576-022-00835-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Accepted: 05/09/2022] [Indexed: 01/02/2023]
Abstract
Transient receptor potential (TRP) channels are known as temperature receptors. Each channel has an activation temperature in vitro within the physiological temperature range. Mice deficient in specific TRP channels show abnormal thermal behaviors. However, the role of TRP channels in mouse thermal behavior is not fully understood. We measured thermal behavior using a new type of thermal gradient system, where mice can freely move around the ring floor, thereby avoiding the stereotypical habit that mice have of staying in a corner, as occurs in a rectangular system. With this system, we can also analyze various factors, such as "Spent time," "Travel distance," "Moving speed," and "Acceleration," to provide more accurate information about mouse behaviors. Further analysis using this system would lead to a better understanding of the molecular basis of thermal behaviors in mice, which could help us develop ways of making humans comfortable in different temperature conditions.
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Affiliation(s)
- Tomoyo Ujisawa
- Division of Cell Signaling, National Institute for Physiological Sciences, 5-1 Higashiyama, Myodaiji-cho, Okazaki, Aichi, 444-8787, Japan
- Thermal Biology Group, Exploratory Research Center On Life and Living Systems (ExCELLS), 5-1 Higashiyama, Myodaiji-cho, Okazaki, Aichi, 444-8787, Japan
| | - Sachiko Sasajima
- Division of Cell Signaling, National Institute for Physiological Sciences, 5-1 Higashiyama, Myodaiji-cho, Okazaki, Aichi, 444-8787, Japan
- Thermal Biology Group, Exploratory Research Center On Life and Living Systems (ExCELLS), 5-1 Higashiyama, Myodaiji-cho, Okazaki, Aichi, 444-8787, Japan
- Division of Diabetes, Department of Internal Medicine, Aichi Medical University School of Medicine, 1-1 Yazakokarimata, Nagakute, Aichi, 480-1195, Japan
| | - Makiko Kashio
- Division of Cell Signaling, National Institute for Physiological Sciences, 5-1 Higashiyama, Myodaiji-cho, Okazaki, Aichi, 444-8787, Japan
- Thermal Biology Group, Exploratory Research Center On Life and Living Systems (ExCELLS), 5-1 Higashiyama, Myodaiji-cho, Okazaki, Aichi, 444-8787, Japan
- Department of Physiological Sciences, Sokendai (The Graduate University for Advanced Studies), Okazaki, Aichi, 444-8787, Japan
| | - Makoto Tominaga
- Division of Cell Signaling, National Institute for Physiological Sciences, 5-1 Higashiyama, Myodaiji-cho, Okazaki, Aichi, 444-8787, Japan.
- Thermal Biology Group, Exploratory Research Center On Life and Living Systems (ExCELLS), 5-1 Higashiyama, Myodaiji-cho, Okazaki, Aichi, 444-8787, Japan.
- Department of Physiological Sciences, Sokendai (The Graduate University for Advanced Studies), Okazaki, Aichi, 444-8787, Japan.
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73
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Ambler M, Hitrec T, Wilson A, Cerri M, Pickering A. Neurons in the Dorsomedial Hypothalamus Promote, Prolong, and Deepen Torpor in the Mouse. J Neurosci 2022; 42:4267-4277. [PMID: 35440490 PMCID: PMC9145229 DOI: 10.1523/jneurosci.2102-21.2022] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 02/15/2022] [Accepted: 02/25/2022] [Indexed: 12/30/2022] Open
Abstract
Torpor is a naturally occurring, hypometabolic, hypothermic state engaged by a wide range of animals in response to imbalance between the supply and demand for nutrients. Recent work has identified some of the key neuronal populations involved in daily torpor induction in mice, in particular, projections from the preoptic area of the hypothalamus to the dorsomedial hypothalamus (DMH). The DMH plays a role in thermoregulation, control of energy expenditure, and circadian rhythms, making it well positioned to contribute to the expression of torpor. We used activity-dependent genetic TRAPing techniques to target DMH neurons that were active during natural torpor bouts in female mice. Chemogenetic reactivation of torpor-TRAPed DMH neurons in calorie-restricted mice promoted torpor, resulting in longer and deeper torpor bouts. Chemogenetic inhibition of torpor-TRAPed DMH neurons did not block torpor entry, suggesting a modulatory role for the DMH in the control of torpor. This work adds to the evidence that the preoptic area of the hypothalamus and the DMH form part of a circuit within the mouse hypothalamus that controls entry into daily torpor.SIGNIFICANCE STATEMENT Daily heterotherms, such as mice, use torpor to cope with environments in which the supply of metabolic fuel is not sufficient for the maintenance of normothermia. Daily torpor involves reductions in body temperature, as well as active suppression of heart rate and metabolism. How the CNS controls this profound deviation from normal homeostasis is not known, but a projection from the preoptic area to the dorsomedial hypothalamus has recently been implicated. We demonstrate that the dorsomedial hypothalamus contains neurons that are active during torpor. Activity in these neurons promotes torpor entry and maintenance, but their activation alone does not appear to be sufficient for torpor entry.
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Affiliation(s)
- Michael Ambler
- Anaesthesia, Pain, & Critical Care Sciences, School of Physiology, Pharmacology, & Neuroscience, University of Bristol, Bristol, BS8 1TD, United Kingdom
| | - Timna Hitrec
- Anaesthesia, Pain, & Critical Care Sciences, School of Physiology, Pharmacology, & Neuroscience, University of Bristol, Bristol, BS8 1TD, United Kingdom
| | - Andrew Wilson
- Anaesthesia, Pain, & Critical Care Sciences, School of Physiology, Pharmacology, & Neuroscience, University of Bristol, Bristol, BS8 1TD, United Kingdom
| | - Matteo Cerri
- Department of Biomedical & Neuromotor Sciences, University of Bologna, Bologna, 40127, Italy
| | - Anthony Pickering
- Anaesthesia, Pain, & Critical Care Sciences, School of Physiology, Pharmacology, & Neuroscience, University of Bristol, Bristol, BS8 1TD, United Kingdom
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74
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Sander S, Pick J, Gattkowski E, Fliegert R, Tidow H. The crystal structure of
TRPM2 MHR1
/2 domain reveals a conserved Zn
2+
‐binding domain essential for structural integrity and channel activity. Protein Sci 2022; 31:e4320. [PMID: 35634784 PMCID: PMC9112350 DOI: 10.1002/pro.4320] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 03/02/2022] [Accepted: 04/10/2022] [Indexed: 11/12/2022]
Affiliation(s)
- Simon Sander
- Hamburg Advanced Research Centre for Bioorganic Chemistry (HARBOR) & Department of Chemistry Institute for Biochemistry and Molecular Biology, University of Hamburg Hamburg Germany
| | - Jelena Pick
- The Calcium Signaling Group, Department of Biochemistry and Molecular Cell Biology University Medical Center Hamburg‐Eppendorf Hamburg Germany
| | - Ellen Gattkowski
- Hamburg Advanced Research Centre for Bioorganic Chemistry (HARBOR) & Department of Chemistry Institute for Biochemistry and Molecular Biology, University of Hamburg Hamburg Germany
| | - Ralf Fliegert
- The Calcium Signaling Group, Department of Biochemistry and Molecular Cell Biology University Medical Center Hamburg‐Eppendorf Hamburg Germany
| | - Henning Tidow
- Hamburg Advanced Research Centre for Bioorganic Chemistry (HARBOR) & Department of Chemistry Institute for Biochemistry and Molecular Biology, University of Hamburg Hamburg Germany
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75
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Liu Y, Lyu Y, Wang H. TRP Channels as Molecular Targets to Relieve Endocrine-Related Diseases. Front Mol Biosci 2022; 9:895814. [PMID: 35573736 PMCID: PMC9095829 DOI: 10.3389/fmolb.2022.895814] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Accepted: 03/28/2022] [Indexed: 12/03/2022] Open
Abstract
Transient receptor potential (TRP) channels are polymodal channels capable of sensing environmental stimuli, which are widely expressed on the plasma membrane of cells and play an essential role in the physiological or pathological processes of cells as sensors. TRPs often form functional homo- or heterotetramers that act as cation channels to flow Na+ and Ca2+, change membrane potential and [Ca2+]i (cytosolic [Ca2+]), and change protein expression levels, channel attributes, and regulatory factors. Under normal circumstances, various TRP channels respond to intracellular and extracellular stimuli such as temperature, pH, osmotic pressure, chemicals, cytokines, and cell damage and depletion of Ca2+ reserves. As cation transport channels and physical and chemical stimulation receptors, TRPs play an important role in regulating secretion, interfering with cell proliferation, and affecting neural activity in these glands and their adenocarcinoma cells. Many studies have proved that TRPs are widely distributed in the pancreas, adrenal gland, and other glands. This article reviews the specific regulatory mechanisms of various TRP channels in some common glands (pancreas, salivary gland, lacrimal gland, adrenal gland, mammary gland, gallbladder, and sweat gland).
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76
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Ambler M, Hitrec T, Pickering A. Turn it off and on again: characteristics and control of torpor. Wellcome Open Res 2022; 6:313. [PMID: 35087956 PMCID: PMC8764563 DOI: 10.12688/wellcomeopenres.17379.2] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/14/2022] [Indexed: 11/20/2022] Open
Abstract
Torpor is a hypothermic, hypoactive, hypometabolic state entered into by a wide range of animals in response to environmental challenge. This review summarises the current understanding of torpor. We start by describing the characteristics of the wide-ranging physiological adaptations associated with torpor. Next follows a discussion of thermoregulation, control of food intake and energy expenditure, and the interactions of sleep and thermoregulation, with particular emphasis on how those processes pertain to torpor. We move on to review the evidence for the systems that control torpor entry, including both the efferent circulating factors that signal the need for torpor, and the central processes that orchestrate it. Finally, we consider how the putative circuits responsible for torpor induction integrate with the established understanding of thermoregulation under non-torpid conditions and highlight important areas of uncertainty for future studies.
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Affiliation(s)
- Michael Ambler
- School of Physiology, Pharmacology, & Neuroscience, University of Bristol, Bristol, Bristol, BS8 1TD, UK
| | - Timna Hitrec
- School of Physiology, Pharmacology, & Neuroscience, University of Bristol, Bristol, Bristol, BS8 1TD, UK
| | - Anthony Pickering
- School of Physiology, Pharmacology, & Neuroscience, University of Bristol, Bristol, Bristol, BS8 1TD, UK
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77
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Machado NL, Todd WD, Kaur S, Saper CB. Median preoptic GABA and glutamate neurons exert differential control over sleep behavior. Curr Biol 2022; 32:2011-2021.e3. [PMID: 35385692 PMCID: PMC9090993 DOI: 10.1016/j.cub.2022.03.039] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Revised: 11/10/2021] [Accepted: 03/13/2022] [Indexed: 12/13/2022]
Abstract
Previous studies suggest that the median preoptic nucleus (MnPO) of the hypothalamus plays an important role in regulating the wake-sleep cycle and, in particular, homeostatic sleep drive. However, the precise cellular phenotypes, targets, and central mechanisms by which the MnPO neurons regulate the wake-sleep cycle remain unknown. Both excitatory and inhibitory MnPO neurons innervate brain regions implicated in sleep promotion and maintenance, suggesting that both cell types may participate in sleep control. Using genetically targeted approaches, we investigated the role of the MnPO GABAergic (MnPOVgat) and glutamatergic (MnPOVglut2) neurons in modulating wake-sleep behavior of mice. We found that both neuron populations differentially participate in wake-sleep control, with MnPOVgat neurons being involved in sleep homeostasis and MnPOVglut2 neurons facilitating sleep during allostatic (stressful) challenges.
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78
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Hyperthermia and Serotonin: The Quest for a “Better Cyproheptadine”. Int J Mol Sci 2022; 23:ijms23063365. [PMID: 35328784 PMCID: PMC8952796 DOI: 10.3390/ijms23063365] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 03/18/2022] [Accepted: 03/18/2022] [Indexed: 02/04/2023] Open
Abstract
Fine temperature control is essential in homeothermic animals. Both hyper- and hypothermia can have deleterious effects. Multiple, efficient and partly redundant mechanisms of adjusting the body temperature to the value set by the internal thermostat exist. The neural circuitry of temperature control and the neurotransmitters involved are reviewed. The GABAergic inhibitory output from the brain thermostat in the preoptic area POA to subaltern neural circuitry of temperature control (Nucleus Raphe Dorsalis and Nucleus Raphe Pallidus) is a function of the balance between the (opposite) effects mediated by the transient receptor potential receptor TRPM2 and EP3 prostaglandin receptors. Activation of TRPM2-expressing neurons in POA favors hypothermia, while inhibition has the opposite effect. Conversely, EP3 receptors induce elevation in body temperature. Activation of EP3-expressing neurons in POA results in hyperthermia, while inhibition has the opposite effect. Agonists at TRPM2 and/or antagonists at EP3 could be beneficial in hyperthermia control. Activity of the neural circuitry of temperature control is modulated by a variety of 5-HT receptors. Based on the theoretical model presented the “ideal” antidote against serotonin syndrome hyperthermia appears to be an antagonist at the 5-HT receptor subtypes 2, 4 and 6 and an agonist at the receptor subtypes 1, 3 and 7. Very broadly speaking, such a profile translates in a sympatholytic effect. While a compound with such an ideal profile is presently not available, better matches than the conventional antidote cyproheptadine (used off-label in severe serotonin syndrome cases) appear to be possible and need to be identified.
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79
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Ehrlich W, Gahan JM, Rentzsch F, Kühn FJP. TRPM2 causes sensitization to oxidative stress but attenuates high-temperature injury in the sea anemone Nematostella vectensis. J Exp Biol 2022; 225:jeb243717. [PMID: 35202476 DOI: 10.1242/jeb.243717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Accepted: 02/21/2022] [Indexed: 11/20/2022]
Abstract
In humans, the cation channel TRPM2 (HsTRPM2) has been intensively studied because it is involved in oxidative stress-mediated apoptosis and also contributes to temperature regulation. The gating mechanism of TRPM2 is quite complex, with a C-terminally localized enzyme domain playing a crucial role. The analysis of orthologues of TRPM2, in particular from the distantly related marine invertebrate Nematostella vectensis (NvTRPM2), revealed that during evolution, the functional role of the endogenous enzyme domain of TRPM2 has undergone fundamental changes. In this study, we investigated whether these evolutionary differences also apply to the physiological functions of TRPM2. For this purpose, we generated a TRPM2 loss-of-function mutation in N. vectensis and compared the phenotypes of wild-type and mutant animals after exposure to either oxidative stress or high temperature. Our results show that under standard culture conditions, mutant animals are indistinguishable from wild-type animals in terms of morphology and development. However, exposure of the two experimental groups to different stressors revealed that TRPM2 causes sensitization to oxidative stress but attenuates high-temperature injury in N. vectensis. Therefore, NvTRPM2 plays opposite roles in the cellular response to these two different stressors. These findings reveal a similar physiological spectrum of activity of TRPM2 in humans and N. vectensis and open up the possibility of establishing N. vectensis as a model organism for the physiological function of TRPM2.
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Affiliation(s)
- Wiebke Ehrlich
- Institute of Physiology, Medical Faculty,University Hospital Aachen, 52074 Aachen, Germany
| | - James M Gahan
- Sars International Centre for Marine Molecular Biology, University of Bergen, 5008 Bergen, Norway
| | - Fabian Rentzsch
- Sars International Centre for Marine Molecular Biology, University of Bergen, 5008 Bergen, Norway
| | - Frank J P Kühn
- Institute of Physiology, Medical Faculty,University Hospital Aachen, 52074 Aachen, Germany
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80
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Vaidya B, Kaur H, Thapak P, Sharma SS, Singh JN. Pharmacological Modulation of TRPM2 Channels via PARP Pathway Leads to Neuroprotection in MPTP-induced Parkinson's Disease in Sprague Dawley Rats. Mol Neurobiol 2022; 59:1528-1542. [PMID: 34997907 DOI: 10.1007/s12035-021-02711-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Accepted: 12/21/2021] [Indexed: 12/13/2022]
Abstract
Transient receptor potential melastatin-2 (TRPM2) channels are cation channels activated by oxidative stress and ADP-ribose (ADPR). Role of TRPM2 channels has been postulated in several neurological disorders, but, it has not been explored in animal models of Parkinson's disease (PD). Thus, the role of TRPM2 and its associated poly (ADPR) polymerase (PARP) signaling pathways were investigated in the 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-induced PD rat model using TRPM2 inhibitor, 2-aminoethyl diphenyl borinate (2-APB), and PARP inhibitor, N-(6-Oxo-5,6-dihydrophenanthridin-2-yl)-(N,N-dimethylamino) acetamide hydrochloride (PJ-34). PD was induced by using a bilateral intranigral administration of MPTP in rats, and different parameters were evaluated. An increase in oxidative stress was observed, leading to locomotor and cognitive deficits in the PD rats. PD rats also showed an increased TRPM2 expression in the striatum and mid-brain accompanied by reduced expression of tyrosine hydroxylase (TH) in comparison to sham animals. Intraperitoneal administration of 2-APB and PJ-34 led to an improvement in the locomotor and cognitive deficits in comparison to MPTP-induced PD rats. These improvements were accompanied by a reduction in the levels of oxidative stress and an increase in TH levels in the striatum and mid-brain. In addition, these pharmacological interventions also led to a decrease in the expression of TRPM2 in PD in the striatum and mid-brain. Our results provide a rationale for the development of potent pharmacological agents targeting the TRPM2-PARP pathway to provide therapeutic benefits for the treatment of neurological diseases like PD.
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Affiliation(s)
- Bhupesh Vaidya
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), S.A.S. Nagar (Mohali), 160062, Punjab, India
| | - Harpinder Kaur
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), S.A.S. Nagar (Mohali), 160062, Punjab, India
| | - Pavan Thapak
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), S.A.S. Nagar (Mohali), 160062, Punjab, India
| | - Shyam Sunder Sharma
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), S.A.S. Nagar (Mohali), 160062, Punjab, India
| | - Jitendra Narain Singh
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), S.A.S. Nagar (Mohali), 160062, Punjab, India.
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81
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Lezama-García K, Mota-Rojas D, Pereira AMF, Martínez-Burnes J, Ghezzi M, Domínguez A, Gómez J, de Mira Geraldo A, Lendez P, Hernández-Ávalos I, Falcón I, Olmos-Hernández A, Wang D. Transient Receptor Potential (TRP) and Thermoregulation in Animals: Structural Biology and Neurophysiological Aspects. Animals (Basel) 2022; 12:106. [PMID: 35011212 PMCID: PMC8749608 DOI: 10.3390/ani12010106] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2021] [Revised: 12/28/2021] [Accepted: 12/31/2021] [Indexed: 02/07/2023] Open
Abstract
This review presents and analyzes recent scientific findings on the structure, physiology, and neurotransmission mechanisms of transient receptor potential (TRP) and their function in the thermoregulation of mammals. The aim is to better understand the functionality of these receptors and their role in maintaining the temperature of animals, or those susceptible to thermal stress. The majority of peripheral receptors are TRP cation channels formed from transmembrane proteins that function as transductors through changes in the membrane potential. TRP are classified into seven families and two groups. The data gathered for this review include controversial aspects because we do not fully know the mechanisms that operate the opening and closing of the TRP gates. Deductions, however, suggest the intervention of mechanisms related to G protein-coupled receptors, dephosphorylation, and ligands. Several questions emerge from the review as well. For example, the future uses of these data for controlling thermoregulatory disorders and the invitation to researchers to conduct more extensive studies to broaden our understanding of these mechanisms and achieve substantial advances in controlling fever, hyperthermia, and hypothermia.
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Affiliation(s)
- Karina Lezama-García
- PhD Program in Biological and Health Sciences, [Doctorado en Ciencias Biológicas y de la Salud], Universidad Autónoma Metropolitana, Mexico City 04960, Mexico;
| | - Daniel Mota-Rojas
- Department of Agricultural and Animal Production, Universidad Autónoma Metropolitana (UAM), Unidad Xochimilco, Mexico City 04960, Mexico; (A.D.); (J.G.); (I.F.)
| | - Alfredo M. F. Pereira
- Mediterranean Institute for Agriculture, Environment and Development (MED), Institute for Advanced Studies and Research, Universidade de Évora, Pólo da Mitra, Ap. 94, 7006-554 Évora, Portugal; (A.M.F.P.); (A.d.M.G.)
| | - Julio Martínez-Burnes
- Animal Health Group, Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Tamaulipas, Victoria City 87000, Mexico;
| | - Marcelo Ghezzi
- Faculty of Veterinary Sciences, Veterinary Research Center (CIVETAN), Universidad Nacional del Centro de la Provincia de Buenos Aires (UNCPBA), CONICET-CICPBA, Arroyo Seco S/N, Tandil 7000, Argentina; (M.G.); (P.L.)
| | - Adriana Domínguez
- Department of Agricultural and Animal Production, Universidad Autónoma Metropolitana (UAM), Unidad Xochimilco, Mexico City 04960, Mexico; (A.D.); (J.G.); (I.F.)
| | - Jocelyn Gómez
- Department of Agricultural and Animal Production, Universidad Autónoma Metropolitana (UAM), Unidad Xochimilco, Mexico City 04960, Mexico; (A.D.); (J.G.); (I.F.)
| | - Ana de Mira Geraldo
- Mediterranean Institute for Agriculture, Environment and Development (MED), Institute for Advanced Studies and Research, Universidade de Évora, Pólo da Mitra, Ap. 94, 7006-554 Évora, Portugal; (A.M.F.P.); (A.d.M.G.)
| | - Pamela Lendez
- Faculty of Veterinary Sciences, Veterinary Research Center (CIVETAN), Universidad Nacional del Centro de la Provincia de Buenos Aires (UNCPBA), CONICET-CICPBA, Arroyo Seco S/N, Tandil 7000, Argentina; (M.G.); (P.L.)
| | - Ismael Hernández-Ávalos
- Facultad de Estudios Superiores Cuautitlán, Universidad Nacional Autónoma de México (UNAM), Cuautitlan Izcalli 54714, Mexico;
| | - Isabel Falcón
- Department of Agricultural and Animal Production, Universidad Autónoma Metropolitana (UAM), Unidad Xochimilco, Mexico City 04960, Mexico; (A.D.); (J.G.); (I.F.)
| | - Adriana Olmos-Hernández
- Division of Biotechnology—Bioterio and Experimental Surgery, Instituto Nacional de Rehabilitación-Luis Guillermo Ibarra Ibarra (INR-LGII), Tlalpan, Mexico City 14389, Mexico;
| | - Dehua Wang
- School of Life Sciences, Shandong University, Qingdao 266237, China;
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82
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Cheng Y, Xu J, Zeng R, Zhao X, Gao W, Quan J, Hu X, Shen Z, Zhang J. The Role of Prostaglandin E2 Synthesized in Rat Lateral Parabrachial Nucleus in LPS-Induced Fever. Neuroendocrinology 2022; 112:399-416. [PMID: 34348333 DOI: 10.1159/000518491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Accepted: 07/15/2021] [Indexed: 11/19/2022]
Abstract
INTRODUCTION The lateral parabrachial nucleus (LPBN) is considered to be a brain site of the pyrogenic action of prostaglandin (PG) E2 outside of the preoptic area. Yet, the role of the LPBN in fever following a systemic immune challenge remains poorly understood. METHODS We examined the expression of cyclooxygenase-2 (COX-2) and microsomal PGE synthase-1 (mPGES-1) in the LPBN after the intraperitoneal injection of lipopolysaccharide (LPS). We investigated the effects of LPBN NS-398 (COX-2 inhibitor) on LPS-induced fever, the effects of direct LPBN PGE2 administration on the energy expenditure (EE), brown adipose tissue (BAT) thermogenesis, neck muscle electromyographic activity and tail temperature, and the effects of PGE2 on the spontaneous firing activity and thermosensitivity of in vitro LPBN neurons in a brain slice. RESULTS The COX-2 and mPGES-1 enzymes were upregulated at both mRNA and protein levels. The microinjection of NS-398 in the LPBN attenuated the LPS-induced fever. Direct PGE2 administration in the LPBN resulted in a febrile response by a coordinated response of increased EE, BAT thermogenesis, shivering, and possibly decreased heat loss through the tail. The LPBN neurons showed a clear anatomical distinction in the firing rate response to PGE2, with the majority of PGE2-excited or -inhibited neurons being located in the external lateral or dorsal subnucleus of the LPBN, respectively. However, neither the firing rate nor the thermal coefficient response to PGE2 showed any difference between warm-sensitive, cold-sensitive, and temperature-insensitive neurons in the LPBN. CONCLUSIONS PGE2 synthesized in the LPBN was at least partially involved in LPS-induced fever via its different modulations of the firing rate of neurons in different LPBN subnuclei.
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Affiliation(s)
- Yongjing Cheng
- Key Laboratory of Thermoregulation and Inflammation of Sichuan Higher Education Institutes, Chengdu Medical College, Chengdu, China
| | - Jianhui Xu
- Key Laboratory of Thermoregulation and Inflammation of Sichuan Higher Education Institutes, Chengdu Medical College, Chengdu, China
| | - Ruixin Zeng
- School of Dentistry, Zunyi Medical University, Zunyi, China
| | - Xi Zhao
- School of Clinical Medicine, Chengdu Medical College, Chengdu, China
| | - Wenmin Gao
- Key Laboratory of Thermoregulation and Inflammation of Sichuan Higher Education Institutes, Chengdu Medical College, Chengdu, China
| | - Junru Quan
- School of Clinical Medicine, Chengdu Medical College, Chengdu, China
| | - Xiaosong Hu
- School of Basic Medicine, Chengdu Medical College, Chengdu, China
| | - Ziling Shen
- School of Basic Medicine, Chengdu Medical College, Chengdu, China
| | - Jie Zhang
- Key Laboratory of Thermoregulation and Inflammation of Sichuan Higher Education Institutes, Chengdu Medical College, Chengdu, China
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83
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Yang Q, Sun Y, Wang W, Jia J, Bai W, Wang K, Wang Z, Luo X, Wang H, Qin L. Transient Receptor Potential Melastatin 2 Thermosensitive Neurons in the Preoptic Area Involved in Menopausal Hot Flashes in Ovariectomized Mice. Neuroendocrinology 2022; 112:649-665. [PMID: 34592740 DOI: 10.1159/000519949] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2021] [Accepted: 09/21/2021] [Indexed: 11/19/2022]
Abstract
INTRODUCTION Menopausal hot flashes are related to hypothalamic preoptic area (POA) dysfunction. Thermosensitive transient receptor potential channels (ThermoTRPs) are involved in temperature sensing and regulation of thermosensitive neurons (TSNs) in the POA. Whether ThermoTRP-TSNs in the POA, particularly the non-noxious thermoreceptor, transient receptor potential melastatin 2 (TRPM2), are involved in the occurrence of hot flashes is still unclear. METHODS Twenty wild-type and 50 Trpm2-Cre adult female mice were randomly divided into sham (SHAM) and ovariectomy (OVX) groups. In the POA, ERα, ERβ, GPR30, TRPA1, TRPM8, TRPM2, and TRPV1 expression was detected by Western blot or/and quantitative real-time polymerase chain reaction and the number of TSNs expressing TRPM2 (TRPM2-TSNs) by immunofluorescence. Before and after TRPM2-TSN activation/inhibition, back (BST) and tail skin temperature (TST) and the proportion of glutamatergic and GABAergic neurons among TRPM2-TSNs were recorded. RESULTS Compared with SHAM, the expression of ERα, ERβ, TRPM2, and TRPM8 in the POA of the OVX group decreased, with a significantly larger change range for TRPM2 than TRPM8. In addition, the number of TRPM2-TSNs showing TRPA1, TRPM8, and TRPV1 expression in the OVX group decreased, and the proportion of glutamatergic and GABAergic neurons in TRPM2-TSNs decreased and increased, respectively. Meanwhile, BST and TST increased. After activating or inhibiting TRPM2-TSNs, the proportions of glutamatergic and GABAergic neurons in TRPM2-TSNs changed, along with the BST and TST. CONCLUSION In menopause, the abnormal quantity and function of TRPM2-TSNs in the POA is key for the development of hot flashes, characterized by an imbalance in heat dissipation and production due to the corresponding imbalance in glutamatergic and GABAergic neurons.
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Affiliation(s)
- Qiyue Yang
- Department of Anatomy and Histoembryology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
- Faculty of Hepato-Pancreato-Biliary Surgery, Institute of Hepatobiliary Surgery, Key Laboratory of Digital Hepetobiliary Surgery, Chinese PLA General Hospital, Beijing, China
| | - Yanrong Sun
- Department of Anatomy and Histoembryology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
| | - Wenjuan Wang
- Department of Anatomy and Histoembryology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
| | - Jing Jia
- Department of Stomatology, The Third Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Wenpei Bai
- Department of Obstetrics and Gynecology, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
| | - Ke Wang
- Department of Anatomy and Histoembryology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
| | - Ziyue Wang
- Department of Anatomy and Histoembryology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
| | - Xiaofeng Luo
- Department of Stomatology, The Third Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Hong Wang
- Institute of Brain Cognition and Brain Disease, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Lihua Qin
- Department of Anatomy and Histoembryology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
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Mertin V, Most P, Busch M, Trojan S, Tapking C, Haug V, Kneser U, Hundeshagen G. Current understanding of thermo(dys)regulation in severe burn injury and the pathophysiological influence of hypermetabolism, adrenergic stress and hypothalamic regulation—a systematic review. BURNS & TRAUMA 2022; 10:tkac031. [PMID: 36168403 PMCID: PMC9501704 DOI: 10.1093/burnst/tkac031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Revised: 04/08/2022] [Indexed: 11/25/2022]
Abstract
Background In this systematic review, we summarize the aetiology as well as the current knowledge regarding thermo(dys)regulation and hypothermia after severe burn trauma and aim to present key concepts of pathophysiology and treatment options. Severe burn injuries with >20% total body surface area (TBSA) affected commonly leave the patient requiring several surgical procedures, prolonged hospital stays and cause substantial changes to body composition and metabolism in the acute and long-term phase. Particularly in severely burned patients, the loss of intact skin and the dysregulation of peripheral and central thermoregulatory processes may lead to substantial complications. Methods A systematic and protocol-based search for suitable publications was conducted following the PRISMA guidelines. Articles were screened and included if deemed eligible. This encompasses animal-based in vivo studies as well as clinical studies examining the control-loops of thermoregulation and metabolic stability within burn patients Results Both experimental animal studies and clinical studies examining thermoregulation and metabolic functions within burn patients have produced a general understanding of core concepts which are, nonetheless, lacking in detail. We describe the wide range of pathophysiological alterations observed after severe burn trauma and highlight the association between thermoregulation and hypermetabolism as well as the interactions between nearly all organ systems. Lastly, the current clinical standards of mitigating the negative effects of thermodysregulation and hypothermia are summarized, as a comprehensive understanding and implementation of the key concepts is critical for patient survival and long-term well-being. Conclusions The available in vivo animal models have provided many insights into the interwoven pathophysiology of severe burn injury, especially concerning thermoregulation. We offer an outlook on concepts of altered central thermoregulation from non-burn research as potential areas of future research interest and aim to provide an overview of the clinical implications of temperature management in burn patients.
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Affiliation(s)
- Viktoria Mertin
- University of Heidelberg Department of Hand, Plastic and Reconstructive Surgery, Burn Trauma Center, BG Trauma Center Ludwigshafen, , 67071 Ludwigshafen am Rhein, Germany
| | - Patrick Most
- Department of Internal Medicine III University Hospital Heidelberg Division of Molecular and Translational Cardiology, , 69120 Heidelberg, Germany
- Deutsches Zentrum für Herz- und Kreislaufforschung (GCCR) , Partner site Heidelberg/Mannheim, Germany
| | - Martin Busch
- Department of Internal Medicine III University Hospital Heidelberg Division of Molecular and Translational Cardiology, , 69120 Heidelberg, Germany
- Deutsches Zentrum für Herz- und Kreislaufforschung (GCCR) , Partner site Heidelberg/Mannheim, Germany
| | - Stefan Trojan
- University of Witten/Herdecke Department of Anesthesiology and Intensive Care Medicine, Merheim Medical Center, Hospitals of Cologne, , 51109 Cologne, Germany
| | - Christian Tapking
- University of Heidelberg Department of Hand, Plastic and Reconstructive Surgery, Burn Trauma Center, BG Trauma Center Ludwigshafen, , 67071 Ludwigshafen am Rhein, Germany
| | - Valentin Haug
- University of Heidelberg Department of Hand, Plastic and Reconstructive Surgery, Burn Trauma Center, BG Trauma Center Ludwigshafen, , 67071 Ludwigshafen am Rhein, Germany
| | - Ulrich Kneser
- University of Heidelberg Department of Hand, Plastic and Reconstructive Surgery, Burn Trauma Center, BG Trauma Center Ludwigshafen, , 67071 Ludwigshafen am Rhein, Germany
| | - Gabriel Hundeshagen
- University of Heidelberg Department of Hand, Plastic and Reconstructive Surgery, Burn Trauma Center, BG Trauma Center Ludwigshafen, , 67071 Ludwigshafen am Rhein, Germany
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Zhao S, Zhang H, Jin H, Cai X, Zhang R, Jin Z, Yang W, Yu P, Zhang L, Liu Z. Design, synthesis and biological activities of benzo[d]imidazo[1,2-a]imidazole derivatives as TRPM2-specfic inhibitors. Eur J Med Chem 2021; 225:113750. [PMID: 34416664 DOI: 10.1016/j.ejmech.2021.113750] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 07/26/2021] [Accepted: 08/04/2021] [Indexed: 10/20/2022]
Abstract
Transient receptor potential melastatin 2 (TRPM2) channel is associated with ischemia/reperfusion injury, inflammation, cancer and neurodegenerative diseases. However, the lack of specific inhibitors impedes the development of TRPM2 targeted therapeutic agents. To develop a selective TRPM2 inhibitor, three-dimensional similarity-based screening strategy was employed using the energy-minimized conformation of non-selective TRPM2 inhibitor 2-APB as the query structure, which resulted in the discovery of a novel tricyclic TRPM2 inhibitor Z-4 with benzo[d]imidazo[1,2-a]imidazole skeleton. A series of Z-4 derivatives were subsequently synthesized and evaluated using calcium imaging and electrophysiology approaches. Among them, preferred compounds ZA10 and ZA18 inhibited the TRPM2 channel with micromolar half-maximal inhibitory concentration values and exhibited TRPM2 selectivity over the TRPM8 channel, TRPV1 channel, InsP3 receptor and Orai channel. The analysis of structure-activity relationship provides valuable insights for further development of selective TRPM2 inhibitors. Neuroprotection assay showed that ZA10 and ZA18 could effectively reduce the mortality of SH-SY5Y cells induced by H2O2. These findings enrich the structure types of existing TRPM2 inhibitors and might provide a new tool for the study of TRPM2 function in Reactive oxygen species (ROS) -related diseases.
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Affiliation(s)
- Siqi Zhao
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, PR China
| | - Han Zhang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, PR China
| | - Hongwei Jin
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, PR China
| | - Xiaobo Cai
- Department of Biophysics, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310058, PR China
| | - Rongxue Zhang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, PR China
| | - Zefang Jin
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, PR China
| | - Wei Yang
- Department of Biophysics, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310058, PR China
| | - Peilin Yu
- Department of Toxicology, School of Public Health, Zhejiang University, Hangzhou, Zhejiang, 310058, PR China.
| | - Liangren Zhang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, PR China.
| | - Zhenming Liu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, PR China.
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Ambler M, Hitrec T, Pickering A. Turn it off and on again: characteristics and control of torpor. Wellcome Open Res 2021; 6:313. [DOI: 10.12688/wellcomeopenres.17379.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/12/2021] [Indexed: 11/20/2022] Open
Abstract
Torpor is a hypothermic, hypoactive, hypometabolic state entered into by a wide range of animals in response to environmental challenge. This review summarises the current understanding of torpor. We start by describing the characteristics of the wide-ranging physiological adaptations associated with torpor. Next follows a discussion of thermoregulation, control of food intake and energy expenditure, and the interactions of sleep and thermoregulation, with particular emphasis on how those processes pertain to torpor. We move on to take a critical view of the evidence for the systems that control torpor entry, including both the efferent circulating factors that signal the need for torpor, and the central processes that orchestrate it. Finally, we consider how the putative circuits responsible for torpor induction integrate with the established understanding of thermoregulation under non-torpid conditions and highlight important areas of uncertainty for future studies.
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87
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A hypothalamomedullary network for physiological responses to environmental stresses. Nat Rev Neurosci 2021; 23:35-52. [PMID: 34728833 DOI: 10.1038/s41583-021-00532-x] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/27/2021] [Indexed: 02/07/2023]
Abstract
Various environmental stressors, such as extreme temperatures (hot and cold), pathogens, predators and insufficient food, can threaten life. Remarkable progress has recently been made in understanding the central circuit mechanisms of physiological responses to such stressors. A hypothalamomedullary neural pathway from the dorsomedial hypothalamus (DMH) to the rostral medullary raphe region (rMR) regulates sympathetic outflows to effector organs for homeostasis. Thermal and infection stress inputs to the preoptic area dynamically alter the DMH → rMR transmission to elicit thermoregulatory, febrile and cardiovascular responses. Psychological stress signalling from a ventromedial prefrontal cortical area to the DMH drives sympathetic and behavioural responses for stress coping, representing a psychosomatic connection from the corticolimbic emotion circuit to the autonomic and somatic motor systems. Under starvation stress, medullary reticular neurons activated by hunger signalling from the hypothalamus suppress thermogenic drive from the rMR for energy saving and prime mastication to promote food intake. This Perspective presents a combined neural network for environmental stress responses, providing insights into the central circuit mechanism for the integrative regulation of systemic organs.
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88
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Bohler MW, Chowdhury VS, Cline MA, Gilbert ER. Heat Stress Responses in Birds: A Review of the Neural Components. BIOLOGY 2021; 10:biology10111095. [PMID: 34827087 PMCID: PMC8614992 DOI: 10.3390/biology10111095] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 10/15/2021] [Accepted: 10/20/2021] [Indexed: 12/26/2022]
Abstract
Heat stress is one of the major environmental conditions causing significant losses in the poultry industry and having negative impacts on the world's food economy. Heat exposure causes several physiological impairments in birds, including oxidative stress, weight loss, immunosuppression, and dysregulated metabolism. Collectively, these lead not only to decreased production in the meat industry, but also decreases in the number of eggs laid by 20%, and overall loss due to mortality during housing and transit. Mitigation techniques have been discussed in depth, and include changes in air flow and dietary composition, improved building insulation, use of air cooling in livestock buildings (fogging systems, evaporation panels), and genetic alterations. Most commonly observed during heat exposure are reduced food intake and an increase in the stress response. However, very little has been explored regarding heat exposure, food intake and stress, and how the neural circuitry responsible for sensing temperatures mediate these responses. That thermoregulation, food intake, and the stress response are primarily mediated by the hypothalamus make it reasonable to assume that it is the central hub at which these systems interact and coordinately regulate downstream changes in metabolism. Thus, this review discusses the neural circuitry in birds associated with thermoregulation, food intake, and stress response at the level of the hypothalamus, with a focus on how these systems might interact in the presence of heat exposure.
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Affiliation(s)
- Mark W. Bohler
- Department of Animal and Poultry Sciences, 2160 Litton-Reaves Hall, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA; (M.W.B.); (M.A.C.)
| | - Vishwajit S. Chowdhury
- Laboratory of Stress Physiology and Metabolism, Faculty of Arts and Science, Kyushu University, Fukuoka 819-0395, Japan;
| | - Mark A. Cline
- Department of Animal and Poultry Sciences, 2160 Litton-Reaves Hall, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA; (M.W.B.); (M.A.C.)
| | - Elizabeth R. Gilbert
- Department of Animal and Poultry Sciences, 2160 Litton-Reaves Hall, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA; (M.W.B.); (M.A.C.)
- Correspondence: ; Tel.: +1-(540)-231-4750
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Jung S, Lee M, Kim DY, Son C, Ahn BH, Heo G, Park J, Kim M, Park HE, Koo DJ, Park JH, Lee JW, Choe HK, Kim SY. A forebrain neural substrate for behavioral thermoregulation. Neuron 2021; 110:266-279.e9. [PMID: 34687664 DOI: 10.1016/j.neuron.2021.09.039] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 07/14/2021] [Accepted: 09/20/2021] [Indexed: 11/17/2022]
Abstract
Thermoregulatory behavior is a basic motivated behavior for body temperature homeostasis. Despite its fundamental importance, a forebrain region or defined neural population required for this process has yet to be established. Here, we show that Vgat-expressing neurons in the lateral hypothalamus (LHVgat neurons) are required for diverse thermoregulatory behaviors. The population activity of LHVgat neurons is increased during thermoregulatory behavior and bidirectionally encodes thermal punishment and reward (P&R). Although this population also regulates feeding and caloric reward, inhibition of parabrachial inputs selectively impaired thermoregulatory behaviors and encoding of thermal stimulus by LHVgat neurons. Furthermore, two-photon calcium imaging revealed a subpopulation of LHVgat neurons bidirectionally encoding thermal P&R, which is engaged during thermoregulatory behavior, but is largely distinct from caloric reward-encoding LHVgat neurons. Our data establish LHVgat neurons as a required neural substrate for behavioral thermoregulation and point to the key role of the thermal P&R-encoding LHVgat subpopulation in thermoregulatory behavior.
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Affiliation(s)
- Sieun Jung
- Institute of Molecular Biology and Genetics, Seoul National University, Seoul 08826, South Korea; Program in Neuroscience, Seoul National University, Seoul 08826, South Korea
| | - Myungsun Lee
- Institute of Molecular Biology and Genetics, Seoul National University, Seoul 08826, South Korea; Department of Chemistry, Seoul National University, Seoul 08826, South Korea
| | - Dong-Yoon Kim
- Institute of Molecular Biology and Genetics, Seoul National University, Seoul 08826, South Korea; Program in Neuroscience, Seoul National University, Seoul 08826, South Korea
| | - Celine Son
- Institute of Molecular Biology and Genetics, Seoul National University, Seoul 08826, South Korea
| | - Benjamin Hyunju Ahn
- Institute of Molecular Biology and Genetics, Seoul National University, Seoul 08826, South Korea; Department of Chemistry, Seoul National University, Seoul 08826, South Korea
| | - Gyuryang Heo
- Institute of Molecular Biology and Genetics, Seoul National University, Seoul 08826, South Korea
| | - Junkoo Park
- Institute of Molecular Biology and Genetics, Seoul National University, Seoul 08826, South Korea
| | - Minyoo Kim
- Institute of Molecular Biology and Genetics, Seoul National University, Seoul 08826, South Korea; Department of Chemistry, Seoul National University, Seoul 08826, South Korea
| | - Han-Eol Park
- Institute of Molecular Biology and Genetics, Seoul National University, Seoul 08826, South Korea
| | - Dong-Jun Koo
- Institute of Molecular Biology and Genetics, Seoul National University, Seoul 08826, South Korea; Program in Neuroscience, Seoul National University, Seoul 08826, South Korea
| | - Jong Hwi Park
- Institute of Molecular Biology and Genetics, Seoul National University, Seoul 08826, South Korea
| | - Jung Weon Lee
- Department of Pharmacy, Seoul National University, Seoul 08826, South Korea
| | - Han Kyoung Choe
- Department of Brain and Cognitive Sciences, Daegu Gyeongbuk Institute of Science and Technology, Daegu 42988, South Korea
| | - Sung-Yon Kim
- Institute of Molecular Biology and Genetics, Seoul National University, Seoul 08826, South Korea; Program in Neuroscience, Seoul National University, Seoul 08826, South Korea; Department of Chemistry, Seoul National University, Seoul 08826, South Korea.
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90
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Kamm GB, Boffi JC, Zuza K, Nencini S, Campos J, Schrenk-Siemens K, Sonntag I, Kabaoğlu B, El Hay MYA, Schwarz Y, Tappe-Theodor A, Bruns D, Acuna C, Kuner T, Siemens J. A synaptic temperature sensor for body cooling. Neuron 2021; 109:3283-3297.e11. [PMID: 34672983 DOI: 10.1016/j.neuron.2021.10.001] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 08/01/2021] [Accepted: 09/30/2021] [Indexed: 10/20/2022]
Abstract
Deep brain temperature detection by hypothalamic warm-sensitive neurons (WSNs) has been proposed to provide feedback information relevant for thermoregulation. WSNs increase their action potential firing rates upon warming, a property that has been presumed to rely on the composition of thermosensitive ion channels within WSNs. Here, we describe a synaptic mechanism that regulates temperature sensitivity of preoptic WSNs and body temperature. Experimentally induced warming of the mouse hypothalamic preoptic area in vivo triggers body cooling. TRPM2 ion channels facilitate this homeostatic response and, at the cellular level, enhance temperature responses of WSNs, thereby linking WSN function with thermoregulation for the first time. Rather than acting within WSNs, we-unexpectedly-find TRPM2 to temperature-dependently increase synaptic drive onto WSNs by disinhibition. Our data emphasize a network-based interoceptive paradigm that likely plays a key role in encoding body temperature and that may facilitate integration of diverse inputs into thermoregulatory pathways.
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Affiliation(s)
- Gretel B Kamm
- Department of Pharmacology, University of Heidelberg, Im Neuenheimer Feld 366, 69120 Heidelberg, Germany
| | - Juan C Boffi
- Department of Pharmacology, University of Heidelberg, Im Neuenheimer Feld 366, 69120 Heidelberg, Germany; Department of Functional Neuroanatomy, Institute for Anatomy and Cell Biology, University of Heidelberg, Im Neuenheimer Feld 307, 69120 Heidelberg, Germany
| | - Kristina Zuza
- Department of Pharmacology, University of Heidelberg, Im Neuenheimer Feld 366, 69120 Heidelberg, Germany
| | - Sara Nencini
- Department of Pharmacology, University of Heidelberg, Im Neuenheimer Feld 366, 69120 Heidelberg, Germany
| | - Joaquin Campos
- Chica and Heinz Schaller Foundation, Institute for Anatomy and Cell Biology, University of Heidelberg, Im Neuenheimer Feld 307, 69120 Heidelberg, Germany
| | - Katrin Schrenk-Siemens
- Department of Pharmacology, University of Heidelberg, Im Neuenheimer Feld 366, 69120 Heidelberg, Germany
| | - Ivo Sonntag
- Department of Functional Neuroanatomy, Institute for Anatomy and Cell Biology, University of Heidelberg, Im Neuenheimer Feld 307, 69120 Heidelberg, Germany
| | - Burçe Kabaoğlu
- Department of Pharmacology, University of Heidelberg, Im Neuenheimer Feld 366, 69120 Heidelberg, Germany
| | - Muad Y Abd El Hay
- Department of Pharmacology, University of Heidelberg, Im Neuenheimer Feld 366, 69120 Heidelberg, Germany
| | - Yvonne Schwarz
- Institute for Physiology, Center of Integrative Physiology and Molecular Medicine, Saarland University, Homburg, Germany
| | - Anke Tappe-Theodor
- Department of Pharmacology, University of Heidelberg, Im Neuenheimer Feld 366, 69120 Heidelberg, Germany
| | - Dieter Bruns
- Institute for Physiology, Center of Integrative Physiology and Molecular Medicine, Saarland University, Homburg, Germany
| | - Claudio Acuna
- Chica and Heinz Schaller Foundation, Institute for Anatomy and Cell Biology, University of Heidelberg, Im Neuenheimer Feld 307, 69120 Heidelberg, Germany
| | - Thomas Kuner
- Department of Functional Neuroanatomy, Institute for Anatomy and Cell Biology, University of Heidelberg, Im Neuenheimer Feld 307, 69120 Heidelberg, Germany
| | - Jan Siemens
- Department of Pharmacology, University of Heidelberg, Im Neuenheimer Feld 366, 69120 Heidelberg, Germany; Molecular Medicine Partnership Unit (MMPU), European Molecular Biology Laboratory (EMBL), Meyerhofstraße 1, 69117 Heidelberg, Germany.
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91
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Harding EC, Ba W, Zahir R, Yu X, Yustos R, Hsieh B, Lignos L, Vyssotski AL, Merkle FT, Constandinou TG, Franks NP, Wisden W. Nitric Oxide Synthase Neurons in the Preoptic Hypothalamus Are NREM and REM Sleep-Active and Lower Body Temperature. Front Neurosci 2021; 15:709825. [PMID: 34720852 PMCID: PMC8551479 DOI: 10.3389/fnins.2021.709825] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Accepted: 09/15/2021] [Indexed: 11/13/2022] Open
Abstract
When mice are exposed to external warmth, nitric oxide synthase (NOS1) neurons in the median and medial preoptic (MnPO/MPO) hypothalamus induce sleep and concomitant body cooling. However, how these neurons regulate baseline sleep and body temperature is unknown. Using calcium photometry, we show that NOS1 neurons in MnPO/MPO are predominantly NREM and REM active, especially at the boundary of wake to NREM transitions, and in the later parts of REM bouts, with lower activity during wakefulness. In addition to releasing nitric oxide, NOS1 neurons in MnPO/MPO can release GABA, glutamate and peptides. We expressed tetanus-toxin light-chain in MnPO/MPO NOS1 cells to reduce vesicular release of transmitters. This induced changes in sleep structure: over 24 h, mice had less NREM sleep in their dark (active) phase, and more NREM sleep in their light (sleep) phase. REM sleep episodes in the dark phase were longer, and there were fewer REM transitions between other vigilance states. REM sleep had less theta power. Mice with synaptically blocked MnPO/MPO NOS1 neurons were also warmer than control mice at the dark-light transition (ZT0), as well as during the dark phase siesta (ZT16-20), where there is usually a body temperature dip. Also, at this siesta point of cooled body temperature, mice usually have more NREM, but mice with synaptically blocked MnPO/MPO NOS1 cells showed reduced NREM sleep at this time. Overall, MnPO/MPO NOS1 neurons promote both NREM and REM sleep and contribute to chronically lowering body temperature, particularly at transitions where the mice normally enter NREM sleep.
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Affiliation(s)
- Edward C. Harding
- Department of Life Sciences, Imperial College London, London, United Kingdom
- Wellcome-MRC Institute of Metabolic Science and MRC Metabolic Diseases Unit, University of Cambridge, Cambridge, United Kingdom
| | - Wei Ba
- Department of Life Sciences, Imperial College London, London, United Kingdom
| | - Reesha Zahir
- Department of Life Sciences, Imperial College London, London, United Kingdom
| | - Xiao Yu
- Department of Life Sciences, Imperial College London, London, United Kingdom
| | - Raquel Yustos
- Department of Life Sciences, Imperial College London, London, United Kingdom
| | - Bryan Hsieh
- Department of Electrical and Electronic Engineering, Imperial College London, London, United Kingdom
| | - Leda Lignos
- Department of Life Sciences, Imperial College London, London, United Kingdom
| | - Alexei L. Vyssotski
- Institute of Neuroinformatics, University of Zürich/ETH Zürich, Zurich, Switzerland
| | - Florian T. Merkle
- Wellcome-MRC Institute of Metabolic Science and MRC Metabolic Diseases Unit, University of Cambridge, Cambridge, United Kingdom
| | - Timothy G. Constandinou
- Department of Electrical and Electronic Engineering, Imperial College London, London, United Kingdom
- United Kingdom Dementia Research Institute Care Research and Technology, Imperial College London, London, United Kingdom
| | - Nicholas P. Franks
- Department of Life Sciences, Imperial College London, London, United Kingdom
- Centre for Neurotechnology, Imperial College London, London, United Kingdom
- United Kingdom Dementia Research Institute at Imperial College London, London, United Kingdom
| | - William Wisden
- Department of Life Sciences, Imperial College London, London, United Kingdom
- Centre for Neurotechnology, Imperial College London, London, United Kingdom
- United Kingdom Dementia Research Institute at Imperial College London, London, United Kingdom
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Kolesov DV, Sokolinskaya EL, Lukyanov KA, Bogdanov AM. Molecular Tools for Targeted Control of Nerve Cell Electrical Activity. Part II. Acta Naturae 2021; 13:17-32. [PMID: 35127143 PMCID: PMC8807539 DOI: 10.32607/actanaturae.11415] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Accepted: 05/14/2021] [Indexed: 01/01/2023] Open
Abstract
In modern life sciences, the issue of a specific, exogenously directed manipulation of a cell's biochemistry is a highly topical one. In the case of electrically excitable cells, the aim of the manipulation is to control the cells' electrical activity, with the result being either excitation with subsequent generation of an action potential or inhibition and suppression of the excitatory currents. The techniques of electrical activity stimulation are of particular significance in tackling the most challenging basic problem: figuring out how the nervous system of higher multicellular organisms functions. At this juncture, when neuroscience is gradually abandoning the reductionist approach in favor of the direct investigation of complex neuronal systems, minimally invasive methods for brain tissue stimulation are becoming the basic element in the toolbox of those involved in the field. In this review, we describe three approaches that are based on the delivery of exogenous, genetically encoded molecules sensitive to external stimuli into the nervous tissue. These approaches include optogenetics (overviewed in Part I), as well as chemogenetics and thermogenetics (described here, in Part II), which is significantly different not only in the nature of the stimuli and structure of the appropriate effector proteins, but also in the details of experimental applications. The latter circumstance is an indication that these are rather complementary than competing techniques.
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Affiliation(s)
- D. V. Kolesov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Moscow, 117997 Russia
| | - E. L. Sokolinskaya
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Moscow, 117997 Russia
| | - K. A. Lukyanov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Moscow, 117997 Russia
| | - A. M. Bogdanov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Moscow, 117997 Russia
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93
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Shiraki C, Horikawa R, Oe Y, Fujimoto M, Okamoto K, Kurganov E, Miyata S. Role of TRPM8 in switching between fever and hypothermia in adult mice during endotoxin-induced inflammation. Brain Behav Immun Health 2021; 16:100291. [PMID: 34589786 PMCID: PMC8474285 DOI: 10.1016/j.bbih.2021.100291] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Accepted: 06/26/2021] [Indexed: 01/11/2023] Open
Abstract
Transient receptor potential melastatin 8 (TRPM8) functions in the sensing of noxious and innocuous colds; however, its significance in pathogen-induced thermoregulation remains unclear. In the present study, we investigated the role of TRPM8 in the regulation of endotoxin-induced body temperature control. The peripheral administration of low-dose lipopolysaccharide (LPS) at 50 μg/kg generated fever in wild-type (WT) mice, whereas it caused hypothermia in TRPM8 knockout (KO) animals. LPS-induced sickness responses such as decrease in body weight, and food and water intake were not different between WT and TRPM8 KO mice. TRPM8 KO mice exhibited more severe hypothermia and lower locomotor activity following the peripheral administration of high-dose LPS at 5 mg/kg compared with WT ones. An intracerebroventricular (i.c.v.) injection of either LPS at 3.6 μg/kg or interleukin-1β at 400 ng/kg elicited hypothermia in TRPM8 KO mice, in contrast to fever in WT animals. The peripheral administration of zymosan at 3 mg/kg also induced hypothermia in contrast to fever in WT mice. An i.c.v. injection of prostaglandin E2 at 16 or 160 nmol/kg induced normal fever in both WT and TRPM8 KO mice. Infrared thermography showed significant decline of the interscapular skin temperature that estimates temperature of the brown adipose tissue, regardless of no alteration of its temperature in WT animals. Fos immunohistochemistry showed stronger Fos activation of hypothalamic thermoregulation-associated nuclei in TRPM8 KO mice compared with WT animals following the peripheral administration of low-dose LPS. Therefore, the present study indicates that TRPM8 is necessary for switching between fever and hypothermia during endotoxin-induced inflammation.
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Affiliation(s)
- Chinatsu Shiraki
- Department of Applied Biology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
| | - Ririka Horikawa
- Department of Applied Biology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
| | - Yuzuki Oe
- Department of Applied Biology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
| | - Momoka Fujimoto
- Department of Applied Biology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
| | - Kaho Okamoto
- Department of Applied Biology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
| | - Erkin Kurganov
- Department of Applied Biology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
| | - Seiji Miyata
- Department of Applied Biology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
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94
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Bongioanni P, Del Carratore R, Corbianco S, Diana A, Cavallini G, Masciandaro SM, Dini M, Buizza R. Climate change and neurodegenerative diseases. ENVIRONMENTAL RESEARCH 2021; 201:111511. [PMID: 34126048 DOI: 10.1016/j.envres.2021.111511] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Revised: 05/25/2021] [Accepted: 06/08/2021] [Indexed: 06/12/2023]
Abstract
The climate change induced global warming, and in particular the increased frequency and intensity of heat waves, have been linked to health problems. Among them, scientific works have been reporting an increased incidence of neurological diseases, encompassing also neurodegenerative ones, such as Dementia of Alzheimer's type, Parkinson's Disease, and Motor Neuron Diseases. Although the increase in prevalence of neurodegenerative diseases is well documented by literature reports, the link between global warming and the enhanced prevalence of such diseases remains elusive. This is the main theme of our work, which aims to examine the connection between high temperature exposure and neurodegenerative diseases. Firstly, we evaluate the influence of high temperatures exposure on the pathophysiology of these disorders. Secondly, we discuss its effects on the thermoregulation, already compromised in affected patients, and its interference with processes of excitotoxicity, oxidative stress and neuroinflammation, all of them related with neurodegeneration. Finally, we investigate chronic versus acute stressors on body warming, and put forward a possible interpretation of the beneficial or detrimental effects on the brain, which is responsible for the incidence or progression of neurological disorders.
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Affiliation(s)
- Paolo Bongioanni
- Severe Acquired Brain Injuries Dpt Section, Azienda Ospedaliero-Universitaria Pisana, Pisa, Italy; NeuroCare Onlus, Pisa, Italy
| | | | - Silvia Corbianco
- Interdepartmental Research Centre on Biology and Pathology of Aging, University of Pisa, Italy; Human Movement and Rehabilitation Research Laboratory, Pisa, Italy
| | - Andrea Diana
- Department of Biomedical Sciences, University of Cagliari, Cagliari, Italy
| | - Gabriella Cavallini
- Interdepartmental Research Centre on Biology and Pathology of Aging, University of Pisa, Italy
| | - Silvia M Masciandaro
- NeuroCare Onlus, Pisa, Italy; Institute of Clinical Physiology, National Research Council, Pisa, Italy
| | - Marco Dini
- Interdepartmental Research Centre on Biology and Pathology of Aging, University of Pisa, Italy; Human Movement and Rehabilitation Research Laboratory, Pisa, Italy
| | - Roberto Buizza
- Scuola Superiore Sant'Anna and Centre for Climate Change Studies and Sustainable Actions (3CSA), Pisa, Italy
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95
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Uchida Y, Izumizaki M. Effect of menstrual cycle and female hormones on TRP and TREK channels in modifying thermosensitivity and physiological functions in women. J Therm Biol 2021; 100:103029. [PMID: 34503776 DOI: 10.1016/j.jtherbio.2021.103029] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 05/10/2021] [Accepted: 05/11/2021] [Indexed: 12/15/2022]
Abstract
Thermoregulation is crucial for human survival at various ambient temperatures. Transient receptor potential (TRP) and TWIK-related K+ (TREK) channels expressed in sensory neurons play a role in peripheral thermosensitivity for temperature detection. In addition, these channels have various physiological roles in the skeletal, nervous, immune, vascular, digestive, and urinary systems. In women, the female hormones estradiol (E2) and progesterone (P4), which fluctuate during the menstrual cycle, affect various physiological functions, such as thermoregulation in hot and cold environments. The present review describes the effect of female hormones on TRP and TREK channels and related physiological functions. The P4 decreased thermosensitivity via TRPV1. E2 facilitates temporomandibular joint disease (TRPV1), breast cancer (TRPM8), and calcium absorption in the digestive system (TRPV5 and TRPV6), inhibits the facilitation of vasoconstriction (TRPM3), nerve inflammation (TRPM4), sweetness sensitivity (TRPM5), and menstrual disorders (TRPC1), and prevents insulin resistance (TRPC5) via each channel. P4 inhibits vasoconstriction (TRPM3), sweetness sensitivity (TRPM5), ciliary motility in the lungs (TRPV4), menstrual disorder (TRPC1), and immunity (TRPC3), and facilitates breast cancer (TRPV6) via each channel as indicated. The effects of female hormones on TREK channels and physiological functions are still under investigation. In summary, female hormones influence physiological functions via some TRP channels; however, the literature is not comprehensive and future studies are needed, especially those related to thermoregulation in women.
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Affiliation(s)
- Yuki Uchida
- Department of Physiology, Showa University School of Medicine, Tokyo, Japan.
| | - Masahiko Izumizaki
- Department of Physiology, Showa University School of Medicine, Tokyo, Japan
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96
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Chen J, Zhang M, Ma Z, Yuan D, Zhu J, Tuo B, Li T, Liu X. Alteration and dysfunction of ion channels/transporters in a hypoxic microenvironment results in the development and progression of gastric cancer. Cell Oncol (Dordr) 2021; 44:739-749. [PMID: 33856653 PMCID: PMC8338819 DOI: 10.1007/s13402-021-00604-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/19/2021] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Gastric cancer (GC) is one of the most common malignant cancers in the world and has only few treatment options and, concomitantly, a poor prognosis. It is generally accepted now that the tumor microenvironment, particularly that under hypoxia, plays an important role in cancer development. Hypoxia can regulate the energy metabolism and malignancy of tumor cells by inducing or altering various important factors, such as oxidative stress, reactive oxygen species (ROS), hypoxia-inducible factors (HIFs), autophagy and acidosis. In addition, altered expression and/or dysfunction of ion channels/transporters (ICTs) have been encountered in a variety of human tumors, including GC, and to play an important role in the processes of tumor cell proliferation, migration, invasion and apoptosis. Increasing evidence indicates that ICTs are at least partly involved in interactions between cancer cells and their hypoxic microenvironment. Here, we provide an overview of the different ICTs that regulate or are regulated by hypoxia in GC. CONCLUSIONS AND PERSPECTIVES Hypoxia is one of the major obstacles to cancer therapy. Regulating cellular responses and factors under hypoxia can inhibit GC. Similarly, altering the expression or activity of ICTs, such as the application of ion channel inhibitors, can slow down the growth and/or migration of GC cells. Since targeting the hypoxic microenvironment and/or ICTs may be a promising strategy for the treatment of GC, more attention should be paid to the interplay between ICTs and the development and progression of GC in such a microenvironment.
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Affiliation(s)
- Junling Chen
- Department of Gastroenterology, Affiliated Hospital of Zunyi Medical University, Zunyi, 563003, Guizhou Province, China
- Digestive Disease Institute of Guizhou Province, Zunyi, Guizhou Province, China
| | - Minglin Zhang
- Department of Gastroenterology, Affiliated Hospital of Zunyi Medical University, Zunyi, 563003, Guizhou Province, China
- Digestive Disease Institute of Guizhou Province, Zunyi, Guizhou Province, China
| | - Zhiyuan Ma
- Department of Gastroenterology, Affiliated Hospital of Zunyi Medical University, Zunyi, 563003, Guizhou Province, China
- Digestive Disease Institute of Guizhou Province, Zunyi, Guizhou Province, China
- Department of Thyroid and Breast Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi, 563003, Guizhou Province, China
| | - Dumin Yuan
- Department of Gastroenterology, Affiliated Hospital of Zunyi Medical University, Zunyi, 563003, Guizhou Province, China
- Digestive Disease Institute of Guizhou Province, Zunyi, Guizhou Province, China
| | - Jiaxing Zhu
- Department of Gastroenterology, Affiliated Hospital of Zunyi Medical University, Zunyi, 563003, Guizhou Province, China
- Digestive Disease Institute of Guizhou Province, Zunyi, Guizhou Province, China
| | - Biguang Tuo
- Department of Gastroenterology, Affiliated Hospital of Zunyi Medical University, Zunyi, 563003, Guizhou Province, China
- Digestive Disease Institute of Guizhou Province, Zunyi, Guizhou Province, China
| | - Taolang Li
- Department of Thyroid and Breast Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi, 563003, Guizhou Province, China.
| | - Xuemei Liu
- Department of Gastroenterology, Affiliated Hospital of Zunyi Medical University, Zunyi, 563003, Guizhou Province, China.
- Digestive Disease Institute of Guizhou Province, Zunyi, Guizhou Province, China.
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Hernandez-Nunez L, Chen A, Budelli G, Berck ME, Richter V, Rist A, Thum AS, Cardona A, Klein M, Garrity P, Samuel ADT. Synchronous and opponent thermosensors use flexible cross-inhibition to orchestrate thermal homeostasis. SCIENCE ADVANCES 2021; 7:7/35/eabg6707. [PMID: 34452914 PMCID: PMC8397275 DOI: 10.1126/sciadv.abg6707] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 07/09/2021] [Indexed: 06/13/2023]
Abstract
Body temperature homeostasis is essential and reliant upon the integration of outputs from multiple classes of cooling- and warming-responsive cells. The computations that integrate these outputs are not understood. Here, we discover a set of warming cells (WCs) and show that the outputs of these WCs combine with previously described cooling cells (CCs) in a cross-inhibition computation to drive thermal homeostasis in larval Drosophila WCs and CCs detect temperature changes using overlapping combinations of ionotropic receptors: Ir68a, Ir93a, and Ir25a for WCs and Ir21a, Ir93a, and Ir25a for CCs. WCs mediate avoidance to warming while cross-inhibiting avoidance to cooling, and CCs mediate avoidance to cooling while cross-inhibiting avoidance to warming. Ambient temperature-dependent regulation of the strength of WC- and CC-mediated cross-inhibition keeps larvae near their homeostatic set point. Using neurophysiology, quantitative behavioral analysis, and connectomics, we demonstrate how flexible integration between warming and cooling pathways can orchestrate homeostatic thermoregulation.
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Affiliation(s)
- Luis Hernandez-Nunez
- Department of Physics, Harvard University, Cambridge, MA 02138, USA.
- Center for Brain Science, Harvard University, Cambridge, MA 02138, USA
- Systems, Synthetic, and Quantitative Biology PhD Program, Harvard University, Cambridge, Boston, MA 02115, USA
| | - Alicia Chen
- Department of Physics, Harvard University, Cambridge, MA 02138, USA
- Center for Brain Science, Harvard University, Cambridge, MA 02138, USA
- Harvard College, Harvard University, Cambridge, MA 02138, USA
| | - Gonzalo Budelli
- National Center for Behavioral Genomics, Brandeis University, Waltham, MA 02454, USA
- Department of Biology, Brandeis University, Waltham, MA 02454, USA
- Volen National Center for Complex Systems, Brandeis University, Waltham, MA 02454, USA
| | - Matthew E Berck
- Janelia Research Campus, Howard Hughes Medical Institute, 19700 Helix Drive, Ashburn, VA 20147, USA
| | - Vincent Richter
- University of Leipzig, Institute of Biology, Talstraße 33, 04103 Leipzig, Germany
| | - Anna Rist
- University of Leipzig, Institute of Biology, Talstraße 33, 04103 Leipzig, Germany
| | - Andreas S Thum
- University of Leipzig, Institute of Biology, Talstraße 33, 04103 Leipzig, Germany
| | - Albert Cardona
- Janelia Research Campus, Howard Hughes Medical Institute, 19700 Helix Drive, Ashburn, VA 20147, USA
- Department of Physiology, Development and Neuroscience, University of Cambridge, Downing Street, Cambridge CB2 3EG, UK
- MRC Laboratory of Molecular Biology, Cambridge Biomedical Campus, Francis Crick Avenue, Cambridge CB2 0QH, UK
| | - Mason Klein
- Department of Physics, University of Miami, Coral Gables, FL 33124, USA.
| | - Paul Garrity
- National Center for Behavioral Genomics, Brandeis University, Waltham, MA 02454, USA.
- Department of Biology, Brandeis University, Waltham, MA 02454, USA
- Volen National Center for Complex Systems, Brandeis University, Waltham, MA 02454, USA
| | - Aravinthan D T Samuel
- Department of Physics, Harvard University, Cambridge, MA 02138, USA.
- Center for Brain Science, Harvard University, Cambridge, MA 02138, USA
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98
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Xu Y, Peng S, Cao X, Qian S, Shen S, Luo J, Zhang X, Sun H, Shen WL, Jia W, Ye J. High doses of butyrate induce a reversible body temperature drop through transient proton leak in mitochondria of brain neurons. Life Sci 2021; 278:119614. [PMID: 34022200 DOI: 10.1016/j.lfs.2021.119614] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 04/15/2021] [Accepted: 04/29/2021] [Indexed: 12/18/2022]
Abstract
AIMS Sodium butyrate (SB) is a major product of gut microbiota with signaling activity in the human body. It has become a dietary supplement in the treatment of intestinal disorders. However, the toxic effect of overdosed SB and treatment strategy remain unknown. The two issues are addressed in current study. MATERIALS AND METHODS SB (0.3-2.5 g/kg) was administrated through a single peritoneal injection in mice. The core body temperature and mitochondrial function in the brown adipose tissue and brain were monitored. Pharmacodynamics, targeted metabolomics, electron microscope, oxygen consumption rate and gene knockdown were employed to dissect the mechanism for the toxic effect. KEY FINDINGS The temperature was reduced by SB (1.2-2.5 g/kg) in a dose-dependent manner in mice for 2-4 h. In the brain, the effect was associated with SB elevation and neurotransmitter reduction. Metabolites changes were seen in the glycolysis, TCA cycle and pentose phosphate pathways. Adenine nucleotide translocase (ANT) was activated by butyrate for proton transportation leading to a transient potential collapse through proton leak. The SB activity was attenuated by ANT inhibition from gene knockdown or pharmacological blocker. ROS was elevated by SB for the increased ANT activity in proton leak in Neuro-2a. SIGNIFICANCE Excessive SB generated an immediate and reversible toxic effect for inhibition of body temperature through transient mitochondrial dysfunction in the brain. The mechanism was quick activation of ANT proteins for potential collapse in mitochondria. ROS may be a factor in the ANT activation by SB.
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Affiliation(s)
- Yanhong Xu
- Shanghai Diabetes Institute, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China; Central Laboratory, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China; Neurology department, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China
| | - Shiqiao Peng
- Shanghai Diabetes Institute, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China; Central Laboratory, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China
| | - Xinyu Cao
- Shanghai Diabetes Institute, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China; Central Laboratory, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China
| | - Shengnan Qian
- Central Laboratory, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China
| | - Shuang Shen
- Central Laboratory, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China
| | - Juntao Luo
- Central Laboratory, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China
| | - Xiaoying Zhang
- Central Laboratory, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China
| | - Hongbin Sun
- School of Life Science and Technology, Shanghai Tech University, Shanghai, 201210, China
| | - Wei L Shen
- School of Life Science and Technology, Shanghai Tech University, Shanghai, 201210, China
| | - Weiping Jia
- Shanghai Diabetes Institute, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China
| | - Jianping Ye
- Shanghai Diabetes Institute, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China; Central Laboratory, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China.
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99
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Zhu J, Chen F, Luo L, Wu W, Dai J, Zhong J, Lin X, Chai C, Ding P, Liang L, Wang S, Ding X, Chen Y, Wang H, Qiu J, Wang F, Sun C, Zeng Y, Fang J, Jiang X, Liu P, Tang G, Qiu X, Zhang X, Ruan Y, Jiang S, Li J, Zhu S, Xu X, Li F, Liu Z, Cao G, Chen D. Single-cell atlas of domestic pig cerebral cortex and hypothalamus. Sci Bull (Beijing) 2021; 66:1448-1461. [PMID: 36654371 DOI: 10.1016/j.scib.2021.04.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 11/07/2020] [Accepted: 03/12/2021] [Indexed: 01/20/2023]
Abstract
The brain of the domestic pig (Sus scrofa domesticus) has drawn considerable attention due to its high similarities to that of humans. However, the cellular compositions of the pig brain (PB) remain elusive. Here we investigated the single-nucleus transcriptomic profiles of five regions of the PB (frontal lobe, parietal lobe, temporal lobe, occipital lobe, and hypothalamus) and identified 21 cell subpopulations. The cross-species comparison of mouse and pig hypothalamus revealed the shared and specific gene expression patterns at the single-cell resolution. Furthermore, we identified cell types and molecular pathways closely associated with neurological disorders, bridging the gap between gene mutations and pathogenesis. We reported, to our knowledge, the first single-cell atlas of domestic pig cerebral cortex and hypothalamus combined with a comprehensive analysis across species, providing extensive resources for future research regarding neural science, evolutionary developmental biology, and regenerative medicine.
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Affiliation(s)
- Jiacheng Zhu
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing 100049, China; BGI-Shenzhen, Shenzhen 518083, China
| | - Fang Chen
- BGI-Shenzhen, Shenzhen 518083, China; MGI, BGI-Shenzhen, Shenzhen 518083, China
| | - Lihua Luo
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing 100049, China; BGI-Shenzhen, Shenzhen 518083, China
| | - Weiying Wu
- BGI-Shenzhen, Shenzhen 518083, China; Department of Neurobiology, NHC and CAMS Key Laboratory of Medical Neurobiology, School of Brain Science and Brian Medicine, and the MOE Frontier Science Center for Brain Research and Brain-Machine Integration, Zhejiang University School of Medicine, Hangzhou 310031, China
| | - Jinxia Dai
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China; College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China
| | - Jixing Zhong
- School of Biological Science & Medical Engineering, Southeast University, Nanjing 210096, China
| | - Xiumei Lin
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing 100049, China; BGI-Shenzhen, Shenzhen 518083, China
| | - Chaochao Chai
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing 100049, China; BGI-Shenzhen, Shenzhen 518083, China
| | - Peiwen Ding
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing 100049, China; BGI-Shenzhen, Shenzhen 518083, China
| | - Langchao Liang
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing 100049, China; BGI-Shenzhen, Shenzhen 518083, China
| | - Shiyou Wang
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing 100049, China; BGI-Shenzhen, Shenzhen 518083, China
| | - Xiangning Ding
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing 100049, China; BGI-Shenzhen, Shenzhen 518083, China
| | - Yin Chen
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing 100049, China; BGI-Shenzhen, Shenzhen 518083, China
| | - Haoyu Wang
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing 100049, China; BGI-Shenzhen, Shenzhen 518083, China
| | - Jiaying Qiu
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing 100049, China; BGI-Shenzhen, Shenzhen 518083, China
| | | | - Chengcheng Sun
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing 100049, China; BGI-Shenzhen, Shenzhen 518083, China; School of Basic Medicine, Qingdao University, Qingdao 266071, China
| | - Yuying Zeng
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing 100049, China; BGI-Shenzhen, Shenzhen 518083, China; College of Life Science, South China Agricultural University, Guangzhou 510642, China
| | - Jian Fang
- BGI-Shenzhen, Shenzhen 518083, China
| | - Xiaosen Jiang
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing 100049, China; BGI-Shenzhen, Shenzhen 518083, China
| | - Ping Liu
- BGI-Shenzhen, Shenzhen 518083, China; MGI, BGI-Shenzhen, Shenzhen 518083, China
| | - Gen Tang
- Shenzhen Children's Hospital, Shenzhen 518083, China
| | - Xin Qiu
- Shenzhen Children's Hospital, Shenzhen 518083, China
| | | | - Yetian Ruan
- Research Center for Translational Medicine, East Hospital, Tongji University School of Medicine, Shanghai 200120, China
| | | | | | - Shida Zhu
- BGI-Shenzhen, Shenzhen 518083, China
| | - Xun Xu
- BGI-Shenzhen, Shenzhen 518083, China
| | - Fang Li
- Research Center for Translational Medicine, East Hospital, Tongji University School of Medicine, Shanghai 200120, China
| | - Zhongmin Liu
- Research Center for Translational Medicine, East Hospital, Tongji University School of Medicine, Shanghai 200120, China
| | - Gang Cao
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China; College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China; College of Biomedicine and Health, Huazhong Agricultural University, Wuhan 430070, China.
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100
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Piñol RA, Mogul AS, Hadley CK, Saha A, Li C, Škop V, Province HS, Xiao C, Gavrilova O, Krashes MJ, Reitman ML. Preoptic BRS3 neurons increase body temperature and heart rate via multiple pathways. Cell Metab 2021; 33:1389-1403.e6. [PMID: 34038711 PMCID: PMC8266747 DOI: 10.1016/j.cmet.2021.05.001] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 03/03/2021] [Accepted: 05/03/2021] [Indexed: 11/15/2022]
Abstract
The preoptic area (POA) is a key brain region for regulation of body temperature (Tb), dictating thermogenic, cardiovascular, and behavioral responses that control Tb. Previously characterized POA neuronal populations all reduced Tb when activated. Using mice, we now identify POA neurons expressing bombesin-like receptor 3 (POABRS3) as a population whose activation increased Tb; inversely, acute inhibition of these neurons reduced Tb. POABRS3 neurons that project to either the paraventricular nucleus of the hypothalamus or the dorsomedial hypothalamus increased Tb, heart rate, and blood pressure via the sympathetic nervous system. Long-term inactivation of POABRS3 neurons caused increased Tb variability, overshooting both increases and decreases in Tb set point, with RNA expression profiles suggesting multiple types of POABRS3 neurons. Thus, POABRS3 neuronal populations regulate Tb and heart rate, contribute to cold defense, and fine-tune feedback control of Tb. These findings advance understanding of homeothermy, a defining feature of mammalian biology.
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Affiliation(s)
- Ramón A Piñol
- Diabetes, Endocrinology, and Obesity Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892, USA.
| | - Allison S Mogul
- Diabetes, Endocrinology, and Obesity Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Colleen K Hadley
- Diabetes, Endocrinology, and Obesity Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Atreyi Saha
- Diabetes, Endocrinology, and Obesity Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Chia Li
- Diabetes, Endocrinology, and Obesity Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Vojtěch Škop
- Diabetes, Endocrinology, and Obesity Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Haley S Province
- Diabetes, Endocrinology, and Obesity Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Cuiying Xiao
- Diabetes, Endocrinology, and Obesity Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Oksana Gavrilova
- Mouse Metabolism Core, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Michael J Krashes
- Diabetes, Endocrinology, and Obesity Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Marc L Reitman
- Diabetes, Endocrinology, and Obesity Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892, USA.
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