1
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Pak S, Ryu H, Lim S, Nguyen TL, Yang S, Kang S, Yu YG, Woo J, Kim C, Fenollar-Ferrer C, Wood JN, Lee MO, Hong GS, Han K, Kim TS, Oh U. Tentonin 3 is a pore-forming subunit of a slow inactivation mechanosensitive channel. Cell Rep 2024; 43:114334. [PMID: 38850532 DOI: 10.1016/j.celrep.2024.114334] [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: 12/13/2023] [Revised: 04/25/2024] [Accepted: 05/23/2024] [Indexed: 06/10/2024] Open
Abstract
Mechanically activating (MA) channels transduce numerous physiological functions. Tentonin 3/TMEM150C (TTN3) confers MA currents with slow inactivation kinetics in somato- and barosensory neurons. However, questions were raised about its role as a Piezo1 regulator and its potential as a channel pore. Here, we demonstrate that purified TTN3 proteins incorporated into the lipid bilayer displayed spontaneous and pressure-sensitive channel currents. These MA currents were conserved across vertebrates and differ from Piezo1 in activation threshold and pharmacological response. Deep neural network structure prediction programs coupled with mutagenetic analysis predicted a rectangular-shaped, tetrameric structure with six transmembrane helices and a pore at the inter-subunit center. The putative pore aligned with two helices of each subunit and had constriction sites whose mutations changed the MA currents. These findings suggest that TTN3 is a pore-forming subunit of a distinct slow inactivation MA channel, potentially possessing a tetrameric structure.
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Affiliation(s)
- Sungmin Pak
- Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea; College of Pharmacy, Seoul National University, Seoul 08826, Korea
| | - Hyunil Ryu
- Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea
| | - Sujin Lim
- Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea; Department of Molecular Medicine and Biopharmaceutical Sciences, Graduate School of Convergence Science and Technology, Seoul National University, Seoul 08826, Korea
| | - Thien-Luan Nguyen
- Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea; College of Pharmacy, Seoul National University, Seoul 08826, Korea
| | - Sungwook Yang
- Artificial Intelligence and Robotics Institute, KIST, Seoul 02792, Korea
| | - Sumin Kang
- Department of Chemistry, Kookmin University, Seoul 02707, Korea
| | - Yeon Gyu Yu
- Department of Chemistry, Kookmin University, Seoul 02707, Korea
| | - Junhyuk Woo
- Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea
| | - Chanjin Kim
- Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea
| | - Cristina Fenollar-Ferrer
- Stiles-Nicholson Brain Institute at Florida Atlantic University, Jupiter, FL 33458, USA; Laboratory of Molecular Genetics, NIDCD, NIH, Bethesda, MD 20892, USA
| | - John N Wood
- Molecular Nociception Group, Wolfson Institute for Biomedical Research, University College London, London WC1E 6BT, UK
| | - Mi-Ock Lee
- College of Pharmacy, Seoul National University, Seoul 08826, Korea
| | - Gyu-Sang Hong
- Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea; Division of Bio-Medical Science & Technology, KIST School, University of Science and Technology, Seoul 02792, Korea; Department of Molecular Medicine and Biopharmaceutical Sciences, Graduate School of Convergence Science and Technology, Seoul National University, Seoul 08826, Korea.
| | - Kyungreem Han
- Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea; Division of Bio-Medical Science & Technology, KIST School, University of Science and Technology, Seoul 02792, Korea.
| | - Tae Song Kim
- Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea.
| | - Uhtaek Oh
- Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea; Department of Molecular Medicine and Biopharmaceutical Sciences, Graduate School of Convergence Science and Technology, Seoul National University, Seoul 08826, Korea.
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2
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Raha A, Wu Y, Zhong L, Raveenthiran J, Hong M, Taiyab A, Wang L, Wang B, Geng F. Exploring Piezo1, Piezo2, and TMEM150C in human brain tissues and their correlation with brain biomechanical characteristics. Mol Brain 2023; 16:83. [PMID: 38124148 PMCID: PMC10731887 DOI: 10.1186/s13041-023-01071-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Accepted: 12/11/2023] [Indexed: 12/23/2023] Open
Abstract
Unraveling the intricate relationship between mechanical factors and brain activity is a pivotal endeavor, yet the underlying mechanistic model of signaling pathways in brain mechanotransduction remains enigmatic. To bridge this gap, we introduced an in situ multi-scale platform, through which we delineate comprehensive brain biomechanical traits in white matter (WM), grey-white matter junctions (GW junction), and the pons across human brain tissue from four distinct donors. We investigate the three-dimensional expression patterns of Piezo1, Piezo2, and TMEM150C, while also examining their associated histological features and mechanotransduction signaling networks, particularly focusing on the YAP/β-catenin axis. Our results showed that the biomechanical characteristics (including stiffness, spring term, and equilibrium stress) associated with Piezo1 vary depending on the specific region. Moving beyond Piezo1, our result demonstrated the significant positive correlations between Piezo2 expression and stiffness in the WM. Meanwhile, the expression of Piezo2 and TMEM150C was shown to be correlated to viscoelastic properties in the pons and WM. Given the heterogeneity of brain tissue, we investigated the three-dimensional expression of Piezo1, Piezo2, and TMEM150C. Our results suggested that three mechanosensitive proteins remained consistent across different vertical planes within the tissue sections. Our findings not only establish Piezo1, Piezo2, and TMEM150C as pivotal mechanosensors that regulate the region-specific mechanotransduction activities but also unveil the paradigm connecting brain mechanical properties and mechanotransduction activities and the variations between individuals.
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Affiliation(s)
- Arjun Raha
- School of Biomedical Engineering, McMaster University, Hamilton, ON, Canada
| | - Yuning Wu
- School of Biomedical Engineering, McMaster University, Hamilton, ON, Canada
| | - Lily Zhong
- Integrated Biomedical Engineering and Health Sciences Program, McMaster University, Hamilton, ON, Canada
| | - Jatheeshan Raveenthiran
- Integrated Biomedical Engineering and Health Sciences Program, McMaster University, Hamilton, ON, Canada
| | - Minji Hong
- Integrated Biomedical Engineering and Health Sciences Program, McMaster University, Hamilton, ON, Canada
| | - Aftab Taiyab
- Department of Pathology and Molecular Medicine, McMaster University, Hamilton, ON, Canada
| | - Li Wang
- Department of Anesthesia, McMaster University, Hamilton, ON, Canada
| | - Bill Wang
- Department of Surgery, McMaster University, Hamilton, ON, Canada
| | - Fei Geng
- W Booth School of Engineering Practice and Technology, McMaster University, Hamilton, ON, Canada.
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3
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Chen GL, Li J, Zhang J, Zeng B. To Be or Not to Be an Ion Channel: Cryo-EM Structures Have a Say. Cells 2023; 12:1870. [PMID: 37508534 PMCID: PMC10378246 DOI: 10.3390/cells12141870] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 07/13/2023] [Accepted: 07/16/2023] [Indexed: 07/30/2023] Open
Abstract
Ion channels are the second largest class of drug targets after G protein-coupled receptors. In addition to well-recognized ones like voltage-gated Na/K/Ca channels in the heart and neurons, novel ion channels are continuously discovered in both excitable and non-excitable cells and demonstrated to play important roles in many physiological processes and diseases such as developmental disorders, neurodegenerative diseases, and cancer. However, in the field of ion channel discovery, there are an unignorable number of published studies that are unsolid and misleading. Despite being the gold standard of a functional assay for ion channels, electrophysiological recordings are often accompanied by electrical noise, leak conductance, and background currents of the membrane system. These unwanted signals, if not treated properly, lead to the mischaracterization of proteins with seemingly unusual ion-conducting properties. In the recent ten years, the technical revolution of cryo-electron microscopy (cryo-EM) has greatly advanced our understanding of the structures and gating mechanisms of various ion channels and also raised concerns about the pore-forming ability of some previously identified channel proteins. In this review, we summarize cryo-EM findings on ion channels with molecular identities recognized or disputed in recent ten years and discuss current knowledge of proposed channel proteins awaiting cryo-EM analyses. We also present a classification of ion channels according to their architectures and evolutionary relationships and discuss the possibility and strategy of identifying more ion channels by analyzing structures of transmembrane proteins of unknown function. We propose that cross-validation by electrophysiological and structural analyses should be essentially required for determining molecular identities of novel ion channels.
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Affiliation(s)
- Gui-Lan Chen
- Key Laboratory of Medical Electrophysiology, Ministry of Education & Medical Electrophysiological Key Laboratory of Sichuan Province, Institute of Cardiovascular Research, Southwest Medical University, Luzhou 646000, China
| | - Jian Li
- College of Pharmaceutical Sciences, Gannan Medical University, Ganzhou 341000, China
| | - Jin Zhang
- School of Basic Medical Sciences, Nanchang University, Nanchang 330031, China
| | - Bo Zeng
- Key Laboratory of Medical Electrophysiology, Ministry of Education & Medical Electrophysiological Key Laboratory of Sichuan Province, Institute of Cardiovascular Research, Southwest Medical University, Luzhou 646000, China
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4
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Wang C, Xu H, Liao X, Wang W, Wu W, Li W, Niu L, Li Z, Li A, Sun Y, Huang W, Song F. Hypertension Promotes the Proliferation and Migration of ccRCC Cells by Downregulation of TIMP3 in Tumor Endothelial Cells through the miR-21-5p/TGFBR2/P38/EGR1 Axis. Mol Cancer Res 2023; 21:62-75. [PMID: 36125433 DOI: 10.1158/1541-7786.mcr-22-0089] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 07/15/2022] [Accepted: 09/16/2022] [Indexed: 02/03/2023]
Abstract
Recent studies have demonstrated that hypertension correlates with tumorigenesis and prognosis of clear-cell renal cell carcinoma (ccRCC); however, the underlying molecular mechanisms remain unclear. By analyzing bulk and single-cell RNA sequencing data and experimental examining of surgical excised ccRCC samples, we found that tissue inhibitors of metalloproteinases 3 (TIMP3), a pivotal paracrine factor in suppressing tumor progression, was significantly reduced in the tumor endothelial cells of patients with hypertensive ccRCC. Besides, in tumor xenograft of NCG mouse model, compared with saline normotensive group the expression of TIMP3 was significantly decreased in the angiotensin II-induced hypertension group. Treating human umbilical vein endothelial cells (HUVEC) with the plasma of patients with hypertensive ccRCC and miR-21-5p, elevated in the plasma of patients with hypertensive ccRCC, reduced the expression of TIMP3 compared with normotensive and control littermates. We also found that the inhibition of TIMP3 expression by miR-21-5p was not through directly targeting at 3'UTR of TIMP3 but through suppressing the expression of TGFβ receptor 2 (TGFBR2). In addition, the knockout of TGFBR2 reduced TIMP3 expression in HUVECs through P38/EGR1 (early growth response protein 1) signaling axis. Moreover, via coculture of ccRCC cell lines with HUVECs and mouse tumor xenograft model, we discovered that the TIMP3 could suppress the proliferation and migration of ccRCC. IMPLICATIONS Overall, our findings shed new light on the role of hypertension in promoting the progression of ccRCC and provide a potential therapeutic target for patients with ccRCC with hypertension.
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Affiliation(s)
- Chenguang Wang
- CAS Key Laboratory of Quantitative Engineering Biology, Guangdong Provincial Key Laboratory of Synthetic Genomics and Shenzhen Key Laboratory of Synthetic Genomics, Shenzhen Institute of Synthetic Biology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong, China
| | - Haibo Xu
- Key Laboratory of Medical Reprogramming Technology, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, Guangdong, China.,International Cancer Center, Shenzhen University School of Medicine, Shenzhen, Guangdong, China.,Guangdong Key Laboratory of Systems Biology and Synthetic Biology for Urogenital Tumors, Shenzhen, Guangdong, China
| | - Xinhui Liao
- Shenzhen Key Laboratory of Genitourinary Tumor, Shenzhen Second People's Hospital, First Affiliated Hospital of Shenzhen University, Shenzhen, Guangdong, China
| | - Weiming Wang
- Key Laboratory of Medical Reprogramming Technology, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, Guangdong, China.,International Cancer Center, Shenzhen University School of Medicine, Shenzhen, Guangdong, China.,Guangdong Key Laboratory of Systems Biology and Synthetic Biology for Urogenital Tumors, Shenzhen, Guangdong, China
| | - Wanjun Wu
- Key Laboratory of Medical Reprogramming Technology, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, Guangdong, China.,International Cancer Center, Shenzhen University School of Medicine, Shenzhen, Guangdong, China.,Guangdong Key Laboratory of Systems Biology and Synthetic Biology for Urogenital Tumors, Shenzhen, Guangdong, China
| | - Wujiao Li
- Clinical laboratory, Shenzhen Children's Hospital, Shenzhen, Guangdong, China
| | - Liman Niu
- Key Laboratory of Medical Reprogramming Technology, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, Guangdong, China.,International Cancer Center, Shenzhen University School of Medicine, Shenzhen, Guangdong, China.,Guangdong Key Laboratory of Systems Biology and Synthetic Biology for Urogenital Tumors, Shenzhen, Guangdong, China
| | - Zhichao Li
- Key Laboratory of Medical Reprogramming Technology, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, Guangdong, China.,International Cancer Center, Shenzhen University School of Medicine, Shenzhen, Guangdong, China.,Guangdong Key Laboratory of Systems Biology and Synthetic Biology for Urogenital Tumors, Shenzhen, Guangdong, China
| | - Aolin Li
- Key Laboratory of Medical Reprogramming Technology, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, Guangdong, China.,International Cancer Center, Shenzhen University School of Medicine, Shenzhen, Guangdong, China.,Guangdong Key Laboratory of Systems Biology and Synthetic Biology for Urogenital Tumors, Shenzhen, Guangdong, China
| | - Yangyang Sun
- CAS Key Laboratory of Quantitative Engineering Biology, Guangdong Provincial Key Laboratory of Synthetic Genomics and Shenzhen Key Laboratory of Synthetic Genomics, Shenzhen Institute of Synthetic Biology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong, China
| | - Weiren Huang
- CAS Key Laboratory of Quantitative Engineering Biology, Guangdong Provincial Key Laboratory of Synthetic Genomics and Shenzhen Key Laboratory of Synthetic Genomics, Shenzhen Institute of Synthetic Biology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong, China.,Key Laboratory of Medical Reprogramming Technology, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, Guangdong, China.,International Cancer Center, Shenzhen University School of Medicine, Shenzhen, Guangdong, China.,Guangdong Key Laboratory of Systems Biology and Synthetic Biology for Urogenital Tumors, Shenzhen, Guangdong, China
| | - Fei Song
- CAS Key Laboratory of Quantitative Engineering Biology, Guangdong Provincial Key Laboratory of Synthetic Genomics and Shenzhen Key Laboratory of Synthetic Genomics, Shenzhen Institute of Synthetic Biology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong, China.,Key Laboratory of Medical Reprogramming Technology, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, Guangdong, China.,International Cancer Center, Shenzhen University School of Medicine, Shenzhen, Guangdong, China.,Guangdong Key Laboratory of Systems Biology and Synthetic Biology for Urogenital Tumors, Shenzhen, Guangdong, China
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5
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Delmas P, Parpaite T, Coste B. PIEZO channels and newcomers in the mammalian mechanosensitive ion channel family. Neuron 2022; 110:2713-2727. [PMID: 35907398 DOI: 10.1016/j.neuron.2022.07.001] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 05/25/2022] [Accepted: 07/01/2022] [Indexed: 10/16/2022]
Abstract
Many ion channels have been described as mechanosensitive according to various criteria. Most broadly defined, an ion channel is called mechanosensitive if its activity is controlled by application of a physical force. The last decade has witnessed a revolution in mechanosensory physiology at the molecular, cellular, and system levels, both in health and in diseases. Since the discovery of the PIEZO proteins as prototypical mechanosensitive channel, many proteins have been proposed to transduce mechanosensory information in mammals. However, few of these newly identified candidates have all the attributes of bona fide, pore-forming mechanosensitive ion channels. In this perspective, we will cover and discuss new data that have advanced our understanding of mechanosensation at the molecular level.
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Affiliation(s)
- Patrick Delmas
- SomatoSens, Laboratory for Cognitive Neuroscience, Aix-Marseille University, CNRS UMR 7291, Marseilles, France.
| | - Thibaud Parpaite
- SomatoSens, Laboratory for Cognitive Neuroscience, Aix-Marseille University, CNRS UMR 7291, Marseilles, France
| | - Bertrand Coste
- SomatoSens, Laboratory for Cognitive Neuroscience, Aix-Marseille University, CNRS UMR 7291, Marseilles, France
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6
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Del Rosario JS, Gabrielle M, Yudin Y, Rohacs T. TMEM120A/TACAN inhibits mechanically activated PIEZO2 channels. J Gen Physiol 2022; 154:213349. [PMID: 35819364 PMCID: PMC9280072 DOI: 10.1085/jgp.202213164] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Accepted: 06/24/2022] [Indexed: 01/14/2023] Open
Abstract
PIEZO2 channels mediate rapidly adapting mechanically activated currents in peripheral sensory neurons of the dorsal root ganglia (DRG), and they are indispensable for light touch and proprioception. Relatively little is known about what other proteins regulate PIEZO2 activity in a cellular context. TMEM120A (TACAN) was proposed to act as a high threshold mechanically activated ion channel in nociceptive DRG neurons. Here, we find that Tmem120a coexpression decreased the amplitudes of mechanically activated PIEZO2 currents and increased their threshold of activation. TMEM120A did not inhibit mechanically activated PIEZO1 and TREK1 channels and TMEM120A alone did not result in the appearance of mechanically activated currents above background. Tmem120a and Piezo2 expression in mouse DRG neurons overlapped, and siRNA-mediated knockdown of Tmem120a increased the amplitudes of rapidly adapting mechanically activated currents and decreased their thresholds to mechanical activation. Our data identify TMEM120A as a negative modulator of PIEZO2 channel activity, and do not support TMEM120A being a mechanically activated ion channel.
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Affiliation(s)
- John Smith Del Rosario
- Department of Pharmacology, Physiology and Neuroscience, Rutgers New Jersey Medical School, Newark, NJ
| | - Matthew Gabrielle
- Department of Pharmacology, Physiology and Neuroscience, Rutgers New Jersey Medical School, Newark, NJ
| | - Yevgen Yudin
- Department of Pharmacology, Physiology and Neuroscience, Rutgers New Jersey Medical School, Newark, NJ
| | - Tibor Rohacs
- Department of Pharmacology, Physiology and Neuroscience, Rutgers New Jersey Medical School, Newark, NJ,Correspondence to Tibor Rohacs:
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7
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Tentonin 3/TMEM150C regulates glucose-stimulated insulin secretion in pancreatic β-cells. Cell Rep 2021; 37:110067. [PMID: 34852221 DOI: 10.1016/j.celrep.2021.110067] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 10/17/2021] [Accepted: 11/08/2021] [Indexed: 11/24/2022] Open
Abstract
Glucose homeostasis is initially regulated by the pancreatic hormone insulin. Glucose-stimulated insulin secretion in β-cells is composed of two cellular mechanisms: a high glucose concentration not only depolarizes the membrane potential of the β-cells by ATP-sensitive K+ channels but also induces cell inflation, which is sufficient to release insulin granules. However, the molecular identity of the stretch-activated cation channel responsible for the latter pathway remains unknown. Here, we demonstrate that Tentonin 3/TMEM150C (TTN3), a mechanosensitive channel, contributes to glucose-stimulated insulin secretion by mediating cation influx. TTN3 is expressed specifically in β-cells and mediates cation currents to glucose and hypotonic stimulations. The glucose-induced depolarization, firing activity, and Ca2+ influx of β-cells were significantly lower in Ttn3-/- mice. More importantly, Ttn3-/- mice show impaired glucose tolerance with decreased insulin secretion in vivo. We propose that TTN3, as a stretch-activated cation channel, contributes to glucose-stimulated insulin secretion.
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8
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Integrated Analysis of lncRNA and mRNA in Subcutaneous Adipose Tissue of Ningxiang Pig. BIOLOGY 2021; 10:biology10080726. [PMID: 34439958 PMCID: PMC8389317 DOI: 10.3390/biology10080726] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 07/24/2021] [Accepted: 07/27/2021] [Indexed: 12/16/2022]
Abstract
Simple Summary This study shows the transcription profiles and the functional network in lncRNA and mRNA in the subcutaneous adipose tissue of Ningxiang piglets in four stages of development (piglets, nursery pigs, early fattening, and late fattening). A total of 2872 novel lncRNAs have now been determined. A total of 10,084 DEmRNAs and 931 DElncRNAs were determined. Interestingly, most DEmRNAs were up-regulated in the piglet stage and, in contrast, DElncRNAs were up-regulated in the late fattening stage. A complicated interaction between mRNAs and lncRNAs was determined via STEM and WGCNA, demonstrating that lncRNAs are an essential regulatory component in mRNAs. Modules 2 and 5 shows a similar mode of transcriptions for both mRNA and lncRNA, which are mainly involved in steroid biosynthesis, glycosphingolipid biosynthesis, metabolic pathways, and glycerolipid metabolism. The transcription levels of mRNAs and lncRNAs for both modules were higher in the early and late fattening stage. This may be explained by the active fatty acids, sterols, steroids, and lipid-related metabolic activity in the subcutaneous adipose tissue during the early and late fattening stage. Abstract Ningxiang pigs, a Chinese bred pig known for its tender meat and high quality unsaturated fatty acids. This study discovers the transcription profiles and functional networks in long non-coding RNA (lncRNA) and messenger RNA (mRNA) in subcutaneous adipose tissue. Subcutaneous adipose tissue was collected from piglet, nursery pig, early fattening, and late fattening stage of Ningxiang piglets, and lncRNA and mRNA transcription of each stage was profiled. A total of 339,204,926 (piglet), 315,609,246 (nursery), 266,798,202 (early fattening), and 343,740,308 (late fattening) clean reads were generated, and 2872 novel lncRNAs were identified. Additionally, 10,084 differential mRNAs (DEmRNAs) and 931 differential lncRNAs were determined. Most DEmRNAs were up-regulated in the piglet stage, while they were down-regulated in late fattening stage. A complicated interaction between mRNAs and lncRNAs was identified via STEM and WGCNA, demonstrated that lncRNAs are a significant regulatory component in mRNAs. The findings showed that modules 2 and 5 have a similar mode of transcription for both mRNA and lncRNA, and were mainly participated in steroid biosynthesis, glycosphingolipid biosynthesis, metabolic pathways, and glycerolipid metabolism. The mRNAs and lncRNAs transcription levels of both modules was higher in the early and late fattening stage, which may be due to the active activity of the metabolism in relation to fatty acids, sterols, steroids, and lipids in the subcutaneous adipose tissue during the early and late fattening stage. These findings could be expected to result in further research of the functional properties of lncRNA from subcutaneous adipose tissue at different stages of development in Ningxiang pigs.
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9
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Bewick GS, Banks RW. Mechanotransduction channels in proprioceptive sensory nerve terminals: still an open question? CURRENT OPINION IN PHYSIOLOGY 2021. [DOI: 10.1016/j.cophys.2020.11.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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10
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Lu HJ, Nguyen TL, Hong GS, Pak S, Kim H, Kim H, Kim DY, Kim SY, Shen Y, Ryu PD, Lee MO, Oh U. Tentonin 3/TMEM150C senses blood pressure changes in the aortic arch. J Clin Invest 2021; 130:3671-3683. [PMID: 32484458 DOI: 10.1172/jci133798] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Accepted: 03/24/2020] [Indexed: 01/09/2023] Open
Abstract
The baroreceptor reflex is a powerful neural feedback that regulates arterial pressure (AP). Mechanosensitive channels transduce pulsatile AP to electrical signals in baroreceptors. Here we show that tentonin 3 (TTN3/TMEM150C), a cation channel activated by mechanical strokes, is essential for detecting AP changes in the aortic arch. TTN3 was expressed in nerve terminals in the aortic arch and nodose ganglion (NG) neurons. Genetic ablation of Ttn3 induced ambient hypertension, tachycardia, AP fluctuations, and impaired baroreflex sensitivity. Chemogenetic silencing or activation of Ttn3+ neurons in the NG resulted in an increase in AP and heart rate, or vice versa. More important, overexpression of Ttn3 in the NG of Ttn3-/- mice reversed the cardiovascular changes observed in Ttn3-/- mice. We conclude that TTN3 is a molecular component contributing to the sensing of dynamic AP changes in baroreceptors.
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Affiliation(s)
- Huan-Jun Lu
- Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, Korea.,College of Pharmacy
| | - Thien-Luan Nguyen
- Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, Korea.,College of Pharmacy
| | - Gyu-Sang Hong
- Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, Korea
| | - Sungmin Pak
- Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, Korea
| | - Hyesu Kim
- Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, Korea
| | - Hyungsup Kim
- Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, Korea
| | | | - Sung-Yon Kim
- Institute of Molecular Biology and Genetics, and
| | - Yiming Shen
- College of Veterinary Medicine, Seoul National University, Seoul, Korea
| | - Pan Dong Ryu
- College of Veterinary Medicine, Seoul National University, Seoul, Korea
| | | | - Uhtaek Oh
- Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, Korea
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11
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Han S, Choi S, Kim NH, Kang S, Yu YG. Use of a Poly‐γ‐Glutamic Acid‐Derived Amphipathic Polypeptide for the Reconstitution of Membrane Proteins. B KOREAN CHEM SOC 2020. [DOI: 10.1002/bkcs.12038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Seong‐Gu Han
- Department of ChemistryKookmin University 861‐1 Jeongneung‐dong Seongbuk‐gu, Seoul 136‐702 Republic of Korea
| | - Saet‐Byeol Choi
- Department of ChemistryKookmin University 861‐1 Jeongneung‐dong Seongbuk‐gu, Seoul 136‐702 Republic of Korea
| | - Nam Hyuk Kim
- Department of ChemistryKookmin University 861‐1 Jeongneung‐dong Seongbuk‐gu, Seoul 136‐702 Republic of Korea
| | - Sumin Kang
- Department of ChemistryKookmin University 861‐1 Jeongneung‐dong Seongbuk‐gu, Seoul 136‐702 Republic of Korea
| | - Yeon Gyu Yu
- Department of ChemistryKookmin University 861‐1 Jeongneung‐dong Seongbuk‐gu, Seoul 136‐702 Republic of Korea
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12
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Anderson EO, Schneider ER, Matson JD, Gracheva EO, Bagriantsev SN. TMEM150C/Tentonin3 Is a Regulator of Mechano-gated Ion Channels. Cell Rep 2019; 23:701-708. [PMID: 29669276 PMCID: PMC5929159 DOI: 10.1016/j.celrep.2018.03.094] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Revised: 02/21/2018] [Accepted: 03/20/2018] [Indexed: 11/24/2022] Open
Abstract
Neuronal mechano-sensitivity relies on mechano-gated ion channels, but pathways regulating their activity remain poorly understood. TMEM150C was proposed to mediate mechano-activated current in proprioceptive neurons. Here, we studied functional interaction of TMEM150C with mechano-gated ion channels from different classes (Piezo2, Piezo1, and the potassium channel TREK-1) using two independent methods of mechanical stimulation. We found that TMEM150C significantly prolongs the duration of the mechano-current produced by all three channels, decreases apparent activation threshold in Piezo2, and induces persistent current in Piezo1. We also show that TMEM150C is co-expressed with Piezo2 in trigeminal neurons, expanding its role beyond proprioceptors. Finally, we cloned TMEM150C from the trigeminal neurons of the tactile-foraging domestic duck and showed that it functions similarly to the mouse ortholog, demonstrating evolutionary conservation among vertebrates. Our studies reveal TMEM150C as a general regulator of mechano-gated ion channels from different classes.
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Affiliation(s)
- Evan O Anderson
- Department of Cellular & Molecular Physiology, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Eve R Schneider
- Department of Cellular & Molecular Physiology, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Jon D Matson
- Department of Cellular & Molecular Physiology, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Elena O Gracheva
- Department of Cellular & Molecular Physiology, Yale University School of Medicine, New Haven, CT 06520, USA; Department of Neuroscience, Yale University School of Medicine, New Haven, CT 06520, USA; Program in Cellular Neuroscience, Neurodegeneration and Repair, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Sviatoslav N Bagriantsev
- Department of Cellular & Molecular Physiology, Yale University School of Medicine, New Haven, CT 06520, USA.
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Cellular organization of three germ layer cells on different types of noncovalent functionalized graphene substrates. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 103:109729. [PMID: 31349510 DOI: 10.1016/j.msec.2019.05.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Revised: 05/07/2019] [Accepted: 05/07/2019] [Indexed: 12/11/2022]
Abstract
Graphene and its derivatives have seen a rapid rise in interest as promising biomaterials especially in the field of tissue engineering, regenerative medicine, and cell biology of late. Despite its proven potential in numerous biological applications, information regarding the relationship between the different forms of graphene and cell lineages is still lacking partly due to its topical emergence in cellular studies. Herein, we explore the biocompatibility of four types of graphene substrates (chemical vapor deposition grown graphene, mechanically exfoliated graphene, chemically exfoliated graphene oxide, and reduced graphene oxide) with three types of somatic cells (keratinocytes, hepatocytes, endothelial cells) derived from the three germ layers in relation to cell adhesion, proliferation, morphology, and gene expression. The results revealed exceptional cell adhesion for all tested groups but enhanced proliferation and cytoskeletal interconnectivity in graphene oxide and reduced graphene oxide substrates. We were unable to detect any adverse effects in gene expression and survivability during a week of culture. We further show topographic changes to graphene substrates under fetal bovine serum adsorption to better illustrate the actual microenvironment of inhabitant cells. This study highlights the extraordinary synergy between graphene and somatic cells, suggesting the discretionary use of extracellular matrix components for in vitro cultivation.
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Schneider ER, Anderson EO, Mastrotto M, Matson JD, Schulz VP, Gallagher PG, LaMotte RH, Gracheva EO, Bagriantsev SN. Molecular basis of tactile specialization in the duck bill. Proc Natl Acad Sci U S A 2017; 114:13036-13041. [PMID: 29109250 PMCID: PMC5724259 DOI: 10.1073/pnas.1708793114] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Tactile-foraging ducks are specialist birds known for their touch-dependent feeding behavior. They use dabbling, straining, and filtering to find edible matter in murky water, relying on the sense of touch in their bill. Here, we present the molecular characterization of embryonic duck bill, which we show contains a high density of mechanosensory corpuscles innervated by functional rapidly adapting trigeminal afferents. In contrast to chicken, a visually foraging bird, the majority of duck trigeminal neurons are mechanoreceptors that express the Piezo2 ion channel and produce slowly inactivating mechano-current before hatching. Furthermore, duck neurons have a significantly reduced mechano-activation threshold and elevated mechano-current amplitude. Cloning and electrophysiological characterization of duck Piezo2 in a heterologous expression system shows that duck Piezo2 is functionally similar to the mouse ortholog but with prolonged inactivation kinetics, particularly at positive potentials. Knockdown of Piezo2 in duck trigeminal neurons attenuates mechano current with intermediate and slow inactivation kinetics. This suggests that Piezo2 is capable of contributing to a larger range of mechano-activated currents in duck trigeminal ganglia than in mouse trigeminal ganglia. Our results provide insights into the molecular basis of mechanotransduction in a tactile-specialist vertebrate.
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Affiliation(s)
- Eve R Schneider
- Department of Cellular and Molecular Physiology, Yale University School of Medicine, New Haven, CT 06520
| | - Evan O Anderson
- Department of Cellular and Molecular Physiology, Yale University School of Medicine, New Haven, CT 06520
| | - Marco Mastrotto
- Department of Cellular and Molecular Physiology, Yale University School of Medicine, New Haven, CT 06520
- Department of Neuroscience, Yale University School of Medicine, New Haven, CT 06520
- Program in Cellular Neuroscience, Neurodegeneration and Repair, Yale University School of Medicine, New Haven, CT 06520
| | - Jon D Matson
- Department of Cellular and Molecular Physiology, Yale University School of Medicine, New Haven, CT 06520
| | - Vincent P Schulz
- Department of Pediatrics, Yale University School of Medicine, New Haven, CT 06520
| | - Patrick G Gallagher
- Department of Pediatrics, Yale University School of Medicine, New Haven, CT 06520
- Department of Genetics, Yale University School of Medicine, New Haven, CT 06520
| | - Robert H LaMotte
- Department of Neuroscience, Yale University School of Medicine, New Haven, CT 06520
- Department of Anesthesiology, Yale University School of Medicine, New Haven, CT 06520
| | - Elena O Gracheva
- Department of Cellular and Molecular Physiology, Yale University School of Medicine, New Haven, CT 06520;
- Department of Neuroscience, Yale University School of Medicine, New Haven, CT 06520
- Program in Cellular Neuroscience, Neurodegeneration and Repair, Yale University School of Medicine, New Haven, CT 06520
| | - Sviatoslav N Bagriantsev
- Department of Cellular and Molecular Physiology, Yale University School of Medicine, New Haven, CT 06520;
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Zhao Q, Wu K, Chi S, Geng J, Xiao B. Heterologous Expression of the Piezo1-ASIC1 Chimera Induces Mechanosensitive Currents with Properties Distinct from Piezo1. Neuron 2017; 94:274-277. [PMID: 28426963 DOI: 10.1016/j.neuron.2017.03.040] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Revised: 01/22/2017] [Accepted: 03/27/2017] [Indexed: 01/30/2023]
Abstract
Piezo1 represents a prototype of the mammalian mechanosensitive cation channel, but its molecular mechanism remains elusive. In a recent study, we showed that C-terminal region, which contains the last two TMs, of 2189-2547 of Piezo1 forms the bona fide pore module, and systematically identified the pore-lining helix and key pore-property-determining residues (Zhao et al., 2016). Furthermore, we have engineered the Piezo1(1-2190)-ASIC1 chimera (fusing the N-terminal region of 1-2190 to the mechano-insensitive ASIC1) that mediated mechanical- and acid-evoked currents in HEK293T cells, indicating the sufficiency of the N-terminal region in mechanotransduction. Now in a Matters Arising, the authors specifically questioned the implication of the chimera data among the many findings shown in our paper. They replicated the chimera-mediated mechanosensitive currents in HEK293T cells that have nearly no detectable expression of endogenous Piezo1, but paradoxically found the chimera to be less effective in Piezo1 knockout HEK293T cells, indicating the involvement of endogenous Piezo1. In this Matters Arising Response, we discuss the chimera results and consider potential interpretations in light of the Matters Arising from Dubin et al. (2017), published concurrently in this issue of Neuron. Please see also the response from Hong et al. (2017), published in this issue.
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Affiliation(s)
- Qiancheng Zhao
- School of Pharmaceutical Sciences, Tsinghua-Peking Joint Center for Life Sciences, IDG/McGovern Institute for Brain Research, Tsinghua University, Beijing 100084, China
| | - Kun Wu
- School of Pharmaceutical Sciences, Tsinghua-Peking Joint Center for Life Sciences, IDG/McGovern Institute for Brain Research, Tsinghua University, Beijing 100084, China
| | - Shaopeng Chi
- School of Pharmaceutical Sciences, Tsinghua-Peking Joint Center for Life Sciences, IDG/McGovern Institute for Brain Research, Tsinghua University, Beijing 100084, China
| | - Jie Geng
- School of Pharmaceutical Sciences, Tsinghua-Peking Joint Center for Life Sciences, IDG/McGovern Institute for Brain Research, Tsinghua University, Beijing 100084, China
| | - Bailong Xiao
- School of Pharmaceutical Sciences, Tsinghua-Peking Joint Center for Life Sciences, IDG/McGovern Institute for Brain Research, Tsinghua University, Beijing 100084, China.
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Dubin AE, Murthy S, Lewis AH, Brosse L, Cahalan SM, Grandl J, Coste B, Patapoutian A. Endogenous Piezo1 Can Confound Mechanically Activated Channel Identification and Characterization. Neuron 2017; 94:266-270.e3. [PMID: 28426961 DOI: 10.1016/j.neuron.2017.03.039] [Citation(s) in RCA: 90] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Revised: 02/07/2017] [Accepted: 03/27/2017] [Indexed: 12/31/2022]
Abstract
A gold standard for characterizing mechanically activated (MA) currents is via heterologous expression of candidate channels in naive cells. Two recent studies described MA channels using this paradigm. TMEM150c was proposed to be a component of an MA channel partly based on a heterologous expression approach (Hong et al., 2016). In another study, Piezo1's N-terminal "propeller" domain was proposed to constitute an intrinsic mechanosensitive module based on expression of a chimera between a pore-forming domain of the mechanically insensitive ASIC1 channel and Piezo1 (Zhao et al., 2016). When we attempted to replicate these results, we found each construct conferred modest MA currents in a small fraction of naive HEK cells similar to the published work. Strikingly, these MA currents were not detected in cells in which endogenous Piezo1 was CRISPR/Cas9 inactivated. These results highlight the importance of choosing cells lacking endogenous MA channels to assay the mechanotransduction properties of various proteins. This Matters Arising paper is in response to Hong et al. (2016) and Zhao et al. (2016) in Neuron. See also the response papers by Hong et al. (2017) and Zhao et al. (2017) published concurrently with this Matters Arising.
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Affiliation(s)
- Adrienne E Dubin
- Howard Hughes Medical Institute, Department of Neuroscience, Dorris Neuroscience Center, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Swetha Murthy
- Howard Hughes Medical Institute, Department of Neuroscience, Dorris Neuroscience Center, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Amanda H Lewis
- Department of Neurobiology, Duke University School of Medicine, 311 Research Drive, Box 3209, Durham, NC 27710, USA
| | - Lucie Brosse
- Aix Marseille Universite, CNRS, CRN2M, Marseille, France
| | - Stuart M Cahalan
- Howard Hughes Medical Institute, Department of Neuroscience, Dorris Neuroscience Center, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Jörg Grandl
- Department of Neurobiology, Duke University School of Medicine, 311 Research Drive, Box 3209, Durham, NC 27710, USA
| | - Bertrand Coste
- Aix Marseille Universite, CNRS, CRN2M, Marseille, France
| | - Ardem Patapoutian
- Howard Hughes Medical Institute, Department of Neuroscience, Dorris Neuroscience Center, The Scripps Research Institute, La Jolla, CA 92037, USA.
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