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Vanneste M, Mulier M, Nogueira Freitas AC, Van Ranst N, Kerstens A, Voets T, Everaerts W. TRPM3 Is Expressed in Afferent Bladder Neurons and Is Upregulated during Bladder Inflammation. Int J Mol Sci 2021; 23:ijms23010107. [PMID: 35008533 PMCID: PMC8745475 DOI: 10.3390/ijms23010107] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 12/17/2021] [Accepted: 12/20/2021] [Indexed: 02/06/2023] Open
Abstract
The cation channel TRPM3 is activated by heat and the neurosteroid pregnenolone sulfate. TRPM3 is expressed on sensory neurons innervating the skin, where together with TRPV1 and TRPA1, it functions as one of three redundant sensors of acute heat. Moreover, functional upregulation of TRPM3 during inflammation contributes to heat hyperalgesia. The role of TRPM3 in sensory neurons innervating internal organs such as the bladder is currently unclear. Here, using retrograde labeling and single-molecule fluorescent RNA in situ hybridization, we demonstrate expression of mRNA encoding TRPM3 in a large subset of dorsal root ganglion (DRG) neurons innervating the mouse bladder, and confirm TRPM3 channel functionality in these neurons using Fura-2-based calcium imaging. After induction of cystitis by injection of cyclophosphamide, we observed a robust increase of the functional responses to agonists of TRPM3, TRPV1, and TRPA1 in bladder-innervating DRG neurons. Cystometry and voided spot analysis in control and cyclophosphamide-treated animals did not reveal differences between wild type and TRPM3-deficient mice, indicating that TRPM3 is not critical for normal voiding. We conclude that TRPM3 is functionally expressed in a large proportion of sensory bladder afferent, but its role in bladder sensation remains to be established.
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Affiliation(s)
- Matthias Vanneste
- Laboratory of Ion Channel Research (LICR), VIB-KU Leuven Center for Brain & Disease Research, Belgium & Department of Cellular and Molecular Medicine, KU Leuven, 3000 Leuven, Belgium; (M.V.); (M.M.); (A.C.N.F.); (N.V.R.)
| | - Marie Mulier
- Laboratory of Ion Channel Research (LICR), VIB-KU Leuven Center for Brain & Disease Research, Belgium & Department of Cellular and Molecular Medicine, KU Leuven, 3000 Leuven, Belgium; (M.V.); (M.M.); (A.C.N.F.); (N.V.R.)
| | - Ana Cristina Nogueira Freitas
- Laboratory of Ion Channel Research (LICR), VIB-KU Leuven Center for Brain & Disease Research, Belgium & Department of Cellular and Molecular Medicine, KU Leuven, 3000 Leuven, Belgium; (M.V.); (M.M.); (A.C.N.F.); (N.V.R.)
| | - Nele Van Ranst
- Laboratory of Ion Channel Research (LICR), VIB-KU Leuven Center for Brain & Disease Research, Belgium & Department of Cellular and Molecular Medicine, KU Leuven, 3000 Leuven, Belgium; (M.V.); (M.M.); (A.C.N.F.); (N.V.R.)
| | - Axelle Kerstens
- VIB Bio Imaging Core, VIB-KU Leuven Center for Brain & Disease Research, Belgium & Research Group Molecular Neurobiology, Department of Neuroscience, KU Leuven, 3000 Leuven, Belgium;
| | - Thomas Voets
- Laboratory of Ion Channel Research (LICR), VIB-KU Leuven Center for Brain & Disease Research, Belgium & Department of Cellular and Molecular Medicine, KU Leuven, 3000 Leuven, Belgium; (M.V.); (M.M.); (A.C.N.F.); (N.V.R.)
- Correspondence: ; Tel.: +32-16-33-02-17
| | - Wouter Everaerts
- Laboratory of Organ Systems, Department of Development and Regeneration, KU Leuven, Belgium & Department of Urology, University Hospitals Leuven, 3000 Leuven, Belgium;
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Kawasaki S, Soga M, Sakurai Y, Nanchi I, Yamamoto M, Imai S, Takahashi T, Tsuno N, Asaki T, Morioka Y, Fujita M. Selective blockade of transient receptor potential vanilloid 4 reduces cyclophosphamide-induced bladder pain in mice. Eur J Pharmacol 2021; 899:174040. [PMID: 33737012 DOI: 10.1016/j.ejphar.2021.174040] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 03/11/2021] [Accepted: 03/12/2021] [Indexed: 12/30/2022]
Abstract
Transient receptor potential vanilloid 4 (TRPV4) is a non-selective cation channel activated by various physical stimuli such as cell swelling and shear stress. TRPV4 is expressed in bladder sensory nerves and epithelium, and its activation produces urinary dysfunction in rodents. However, there have been few reports regarding its involvement in bladder pain. Therefore, we investigated whether TRPV4 is involved in bladder pain in mouse cystitis model. Intraperitoneal injection of cyclophosphamide (CYP; 300 mg/kg) produced mechanical hypersensitivity in the lower abdomen associated with a severe inflammatory bladder in mice. The mechanical threshold was reversed significantly in Trpv4-knockout (KO) mice. Repeated injections of CYP (150 mg/kg) daily for 4 days provoked mild bladder inflammation and persistent mechanical hypersensitivity in mice. Trpv4-KO mice prevented a reduction of the mechanical threshold without an alteration in bladder inflammation. A selective TRPV4 antagonist also reversed the mechanical threshold in chronic cystitis mice. Although expression of Trpv4 was unchanged in the bladders of chronic cystitis mice, the level of phosphorylated TRPV4 was increased significantly. These results suggest involvement of TRPV4 in bladder pain of cystitis mice. A TRPV4 antagonist might be useful for patients with irritable bladder pain such as those with interstitial cystitis/painful bladder syndrome.
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MESH Headings
- Analgesics/pharmacology
- Animals
- Behavior, Animal/drug effects
- Cells, Cultured
- Cyclophosphamide
- Cystitis, Interstitial/chemically induced
- Cystitis, Interstitial/metabolism
- Cystitis, Interstitial/physiopathology
- Cystitis, Interstitial/prevention & control
- Disease Models, Animal
- Ganglia, Spinal/drug effects
- Ganglia, Spinal/metabolism
- Ganglia, Spinal/physiopathology
- Male
- Mice, Inbred C57BL
- Mice, Knockout
- Nociceptive Pain/chemically induced
- Nociceptive Pain/metabolism
- Nociceptive Pain/physiopathology
- Nociceptive Pain/prevention & control
- Pain Threshold/drug effects
- Phosphorylation
- TRPV Cation Channels/antagonists & inhibitors
- TRPV Cation Channels/genetics
- TRPV Cation Channels/metabolism
- Urinary Bladder/drug effects
- Urinary Bladder/metabolism
- Urinary Bladder/physiopathology
- Mice
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Affiliation(s)
- Shiori Kawasaki
- Laboratory for Drug Discovery & Disease Research, Shionogi & Co., Ltd., 1-1 Futaba-cho 3-chome, Toyonaka, Osaka, 561-0825, Japan
| | - Masahiko Soga
- Animal Production Technology for Animal Models, Shionogi Techno Advance Research Co. Ltd., 1-1 Futaba-cho 3-chome, Toyonaka, Osaka, 561-0825, Japan
| | - Yusuke Sakurai
- Laboratory for Drug Discovery & Disease Research, Shionogi & Co., Ltd., 1-1 Futaba-cho 3-chome, Toyonaka, Osaka, 561-0825, Japan
| | - Isamu Nanchi
- Laboratory for Innovative Therapy Research, Shionogi & Co., Ltd., 1-1 Futaba-cho 3-chome, Toyonaka, Osaka, 561-0825, Japan
| | - Miyuki Yamamoto
- Laboratory for Drug Discovery & Disease Research, Shionogi & Co., Ltd., 1-1 Futaba-cho 3-chome, Toyonaka, Osaka, 561-0825, Japan
| | - Sunao Imai
- Laboratory for Advanced Medicine Research, Shionogi & Co., Ltd., 1-1 Futaba-cho 3-chome, Toyonaka, Osaka, 561-0825, Japan
| | - Tatsuya Takahashi
- Laboratory for Advanced Medicine Research, Shionogi & Co., Ltd., 1-1 Futaba-cho 3-chome, Toyonaka, Osaka, 561-0825, Japan
| | - Naoki Tsuno
- API R&D Laboratory, CMC R&D Division, Shionogi & Co., Ltd., 1-3, Kuise terajima 2-chome, Amagasaki, Hyogo, 660-0813, Japan
| | - Toshiyuki Asaki
- Laboratory for Drug Discovery & Disease Research, Shionogi & Co., Ltd., 1-1 Futaba-cho 3-chome, Toyonaka, Osaka, 561-0825, Japan
| | - Yasuhide Morioka
- Laboratory for Drug Discovery & Disease Research, Shionogi & Co., Ltd., 1-1 Futaba-cho 3-chome, Toyonaka, Osaka, 561-0825, Japan
| | - Masahide Fujita
- Laboratory for Drug Discovery & Disease Research, Shionogi & Co., Ltd., 1-1 Futaba-cho 3-chome, Toyonaka, Osaka, 561-0825, Japan.
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Vanneste M, Segal A, Voets T, Everaerts W. Transient receptor potential channels in sensory mechanisms of the lower urinary tract. Nat Rev Urol 2021; 18:139-159. [PMID: 33536636 DOI: 10.1038/s41585-021-00428-6] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/08/2021] [Indexed: 01/30/2023]
Abstract
Disruptions to sensory pathways in the lower urinary tract commonly occur and can give rise to lower urinary tract symptoms (LUTS). The unmet clinical need for treatment of LUTS has stimulated research into the molecular mechanisms that underlie neuronal control of the bladder and transient receptor potential (TRP) channels have emerged as key regulators of the sensory processes that regulate bladder function. TRP channels function as molecular sensors in urothelial cells and afferent nerve fibres and can be considered the origin of bladder sensations. TRP channels in the lower urinary tract contribute to the generation of normal and abnormal bladder sensations through a variety of mechanisms, and have demonstrated potential as targets for the treatment of LUTS in functional disorders of the lower urinary tract.
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Affiliation(s)
- Matthias Vanneste
- Laboratory of Ion Channel Research, VIB Center for Brain & Disease Research, Leuven, and Department of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium
| | - Andrei Segal
- Laboratory of Ion Channel Research, VIB Center for Brain & Disease Research, Leuven, and Department of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium
| | - Thomas Voets
- Laboratory of Ion Channel Research, VIB Center for Brain & Disease Research, Leuven, and Department of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium
| | - Wouter Everaerts
- Laboratory of Experimental Urology, Department of Development and Regeneration, KU Leuven, Leuven, Belgium.
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Affiliation(s)
- Sarah B Peters
- Division of Biosciences, College of Dentistry, The Ohio State University, Columbus, OH, USA
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Dalghi MG, Montalbetti N, Carattino MD, Apodaca G. The Urothelium: Life in a Liquid Environment. Physiol Rev 2020; 100:1621-1705. [PMID: 32191559 PMCID: PMC7717127 DOI: 10.1152/physrev.00041.2019] [Citation(s) in RCA: 85] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 03/02/2020] [Accepted: 03/14/2020] [Indexed: 02/08/2023] Open
Abstract
The urothelium, which lines the renal pelvis, ureters, urinary bladder, and proximal urethra, forms a high-resistance but adaptable barrier that surveils its mechanochemical environment and communicates changes to underlying tissues including afferent nerve fibers and the smooth muscle. The goal of this review is to summarize new insights into urothelial biology and function that have occurred in the past decade. After familiarizing the reader with key aspects of urothelial histology, we describe new insights into urothelial development and regeneration. This is followed by an extended discussion of urothelial barrier function, including information about the roles of the glycocalyx, ion and water transport, tight junctions, and the cellular and tissue shape changes and other adaptations that accompany expansion and contraction of the lower urinary tract. We also explore evidence that the urothelium can alter the water and solute composition of urine during normal physiology and in response to overdistension. We complete the review by providing an overview of our current knowledge about the urothelial environment, discussing the sensor and transducer functions of the urothelium, exploring the role of circadian rhythms in urothelial gene expression, and describing novel research tools that are likely to further advance our understanding of urothelial biology.
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Affiliation(s)
- Marianela G Dalghi
- Department of Medicine, Renal-Electrolyte Division, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Nicolas Montalbetti
- Department of Medicine, Renal-Electrolyte Division, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Marcelo D Carattino
- Department of Medicine, Renal-Electrolyte Division, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Gerard Apodaca
- Department of Medicine, Renal-Electrolyte Division, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
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6
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Sensory nerve supports epithelial stem cell function in healing of corneal epithelium in mice: the role of trigeminal nerve transient receptor potential vanilloid 4. J Transl Med 2019; 99:210-230. [PMID: 30413814 DOI: 10.1038/s41374-018-0118-4] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Revised: 07/06/2018] [Accepted: 07/09/2018] [Indexed: 01/24/2023] Open
Abstract
In order to understand the pathobiology of neurotrophic keratopathy, we established a mouse model by coagulating the first branch of the trigeminal nerve (V1 nerve). In our model, the sensory nerve in the central cornea disappeared and remaining fibers were sparse in the peripheral limbal region. Impaired corneal epithelial healing in the mouse model was associated with suppression of both cell proliferation and expression of stem cell markers in peripheral/limbal epithelium as well as a reduction of transient receptor potential vanilloid 4 (TRPV4) expression in tissue. TRPV4 gene knockout also suppressed epithelial repair in mouse cornea, although it did not seem to directly modulate migration of epithelium. In a co-culture experiment, TRPV4-introduced KO trigeminal ganglion upregulated nerve growth factor (NGF) in cultured corneal epithelial cells, but ganglion with a control vector did not. TRPV4 gene introduction into a damaged V1 nerve rescues the impairment of epithelial healing in association with partial recovery of the stem/progenitor cell markers and upregulation of cell proliferation and of NGF expression in the peripheral/limbal epithelium. Gene transfer of TRPV4 did not accelerate the regeneration of nerve fibers. Sensory nerve TRPV4 is critical to maintain stemness of peripheral/limbal basal cells, and is one of the major mechanisms of homeostasis maintenance of corneal epithelium.
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Mandge D, Manchanda R. A biophysically detailed computational model of urinary bladder small DRG neuron soma. PLoS Comput Biol 2018; 14:e1006293. [PMID: 30020934 PMCID: PMC6066259 DOI: 10.1371/journal.pcbi.1006293] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Revised: 07/30/2018] [Accepted: 06/11/2018] [Indexed: 12/13/2022] Open
Abstract
Bladder small DRG neurons, which are putative nociceptors pivotal to urinary bladder function, express more than a dozen different ionic membrane mechanisms: ion channels, pumps and exchangers. Small-conductance Ca2+-activated K+ (SKCa) channels which were earlier thought to be gated solely by intracellular Ca2+ concentration ([Ca]i) have recently been shown to exhibit inward rectification with respect to membrane potential. The effect of SKCa inward rectification on the excitability of these neurons is unknown. Furthermore, studies on the role of KCa channels in repetitive firing and their contributions to different types of afterhyperpolarization (AHP) in these neurons are lacking. In order to study these phenomena, we first constructed and validated a biophysically detailed single compartment model of bladder small DRG neuron soma constrained by physiological data. The model includes twenty-two major known membrane mechanisms along with intracellular Ca2+ dynamics comprising Ca2+ diffusion, cytoplasmic buffering, and endoplasmic reticulum (ER) and mitochondrial mechanisms. Using modelling studies, we show that inward rectification of SKCa is an important parameter regulating neuronal repetitive firing and that its absence reduces action potential (AP) firing frequency. We also show that SKCa is more potent in reducing AP spiking than the large-conductance KCa channel (BKCa) in these neurons. Moreover, BKCa was found to contribute to the fast AHP (fAHP) and SKCa to the medium-duration (mAHP) and slow AHP (sAHP). We also report that the slow inactivating A-type K+ channel (slow KA) current in these neurons is composed of 2 components: an initial fast inactivating (time constant ∼ 25-100 ms) and a slow inactivating (time constant ∼ 200-800 ms) current. We discuss the implications of our findings, and how our detailed model can help further our understanding of the role of C-fibre afferents in the physiology of urinary bladder as well as in certain disorders.
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Affiliation(s)
- Darshan Mandge
- Computational Neurophysiology Lab, Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Mumbai, India 400076
| | - Rohit Manchanda
- Computational Neurophysiology Lab, Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Mumbai, India 400076
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Sidorova YA, Bespalov MM, Wong AW, Kambur O, Jokinen V, Lilius TO, Suleymanova I, Karelson G, Rauhala PV, Karelson M, Osborne PB, Keast JR, Kalso EA, Saarma M. A Novel Small Molecule GDNF Receptor RET Agonist, BT13, Promotes Neurite Growth from Sensory Neurons in Vitro and Attenuates Experimental Neuropathy in the Rat. Front Pharmacol 2017; 8:365. [PMID: 28680400 PMCID: PMC5478727 DOI: 10.3389/fphar.2017.00365] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2017] [Accepted: 05/26/2017] [Indexed: 12/25/2022] Open
Abstract
Neuropathic pain caused by nerve damage is a common and severe class of chronic pain. Disease-modifying clinical therapies are needed as current treatments typically provide only symptomatic relief; show varying clinical efficacy; and most have significant adverse effects. One approach is targeting either neurotrophic factors or their receptors that normalize sensory neuron function and stimulate regeneration after nerve damage. Two candidate targets are glial cell line-derived neurotrophic factor (GDNF) and artemin (ARTN), as these GDNF family ligands (GFLs) show efficacy in animal models of neuropathic pain (Boucher et al., 2000; Gardell et al., 2003; Wang et al., 2008, 2014). As these protein ligands have poor drug-like properties and are expensive to produce for clinical use, we screened 18,400 drug-like compounds to develop small molecules that act similarly to GFLs (GDNF mimetics). This screening identified BT13 as a compound that selectively targeted GFL receptor RET to activate downstream signaling cascades. BT13 was similar to NGF and ARTN in selectively promoting neurite outgrowth from the peptidergic class of adult sensory neurons in culture, but was opposite to ARTN in causing neurite elongation without affecting initiation. When administered after spinal nerve ligation in a rat model of neuropathic pain, 20 and 25 mg/kg of BT13 decreased mechanical hypersensitivity and normalized expression of sensory neuron markers in dorsal root ganglia. In control rats, BT13 had no effect on baseline mechanical or thermal sensitivity, motor coordination, or weight gain. Thus, small molecule BT13 selectively activates RET and offers opportunities for developing novel disease-modifying medications to treat neuropathic pain.
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Affiliation(s)
- Yulia A Sidorova
- Laboratory of Molecular Neuroscience, Institute of Biotechnology, University of HelsinkiHelsinki, Finland
| | - Maxim M Bespalov
- Laboratory of Molecular Neuroscience, Institute of Biotechnology, University of HelsinkiHelsinki, Finland
| | - Agnes W Wong
- Department of Anatomy and Neuroscience, The University of MelbourneMelbourne, VIC, Australia
| | - Oleg Kambur
- Department of Pharmacology, Faculty of Medicine, University of HelsinkiHelsinki, Finland
| | - Viljami Jokinen
- Department of Pharmacology, Faculty of Medicine, University of HelsinkiHelsinki, Finland
| | - Tuomas O Lilius
- Department of Pharmacology, Faculty of Medicine, University of HelsinkiHelsinki, Finland
| | - Ilida Suleymanova
- Laboratory of Molecular Neuroscience, Institute of Biotechnology, University of HelsinkiHelsinki, Finland
| | | | - Pekka V Rauhala
- Department of Pharmacology, Faculty of Medicine, University of HelsinkiHelsinki, Finland
| | - Mati Karelson
- Department of Molecular Technology, Institute of Chemistry, University of TartuTartu, Estonia
| | - Peregrine B Osborne
- Department of Anatomy and Neuroscience, The University of MelbourneMelbourne, VIC, Australia
| | - Janet R Keast
- Department of Anatomy and Neuroscience, The University of MelbourneMelbourne, VIC, Australia
| | - Eija A Kalso
- Department of Pharmacology, Faculty of Medicine, University of HelsinkiHelsinki, Finland.,Pain Clinic, Department of Anesthesiology, Intensive Care and Pain Medicine, University of Helsinki and Helsinki University HospitalHelsinki, Finland
| | - Mart Saarma
- Laboratory of Molecular Neuroscience, Institute of Biotechnology, University of HelsinkiHelsinki, Finland
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Wong AW, K P Yeung J, Payne SC, Keast JR, Osborne PB. Neurite outgrowth in normal and injured primary sensory neurons reveals different regulation by nerve growth factor (NGF) and artemin. Mol Cell Neurosci 2015; 65:125-34. [PMID: 25752731 DOI: 10.1016/j.mcn.2015.03.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2015] [Revised: 02/19/2015] [Accepted: 03/05/2015] [Indexed: 12/11/2022] Open
Abstract
Neurotrophic factors have been intensively studied as potential therapeutic agents for promoting neural regeneration and functional recovery after nerve injury. Artemin is a member of the glial cell line-derived neurotrophic factor (GDNF) family of ligands (GFLs) that forms a signalling complex with GFRα3 and the tyrosine kinase Ret. Systemic administration of artemin in rodents is reported to facilitate regeneration of primary sensory neurons following axotomy, improve recovery of sensory function, and reduce sensory hypersensitivity that is a cause of pain. However, the biological mechanisms that underlie these effects are mostly unknown. This study has investigated the biological significance of the colocalisation of GFRα3 with TrkA (neurotrophin receptor for nerve growth factor [NGF]) in the peptidergic type of unmyelinated (C-fibre) sensory neurons in rat dorsal root ganglia (DRG). In vitro neurite outgrowth assays were used to study the effects of artemin and NGF by comparing DRG neurons that were previously uninjured, or were axotomised in vivo by transecting a visceral or somatic peripheral nerve. We found that artemin could facilitate neurite initiation but in comparison to NGF had low efficacy for facilitating neurite elongation and branching. This low efficacy was not increased when a preconditioning in vivo nerve injury was used to induce a pro-regenerative state. Neurite initiation was unaffected by artemin when PI3 kinase and Src family kinase signalling were blocked, but NGF had a reduced effect.
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Affiliation(s)
- Agnes W Wong
- Department of Anatomy and Neuroscience, University of Melbourne, Parkville, Victoria 3010, Australia
| | - James K P Yeung
- School of Medical Sciences, UNSW, Randwick, NSW 2052, Australia; Pain Management Research Institute (Kolling Institute), Sydney Medical School - Northern, The University of Sydney NSW 2010, Australia
| | - Sophie C Payne
- Department of Anatomy and Neuroscience, University of Melbourne, Parkville, Victoria 3010, Australia
| | - Janet R Keast
- Department of Anatomy and Neuroscience, University of Melbourne, Parkville, Victoria 3010, Australia; Pain Management Research Institute (Kolling Institute), Sydney Medical School - Northern, The University of Sydney NSW 2010, Australia
| | - Peregrine B Osborne
- Department of Anatomy and Neuroscience, University of Melbourne, Parkville, Victoria 3010, Australia; Pain Management Research Institute (Kolling Institute), Sydney Medical School - Northern, The University of Sydney NSW 2010, Australia.
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Deruyver Y, Voets T, De Ridder D, Everaerts W. Transient receptor potential channel modulators as pharmacological treatments for lower urinary tract symptoms (LUTS): myth or reality? BJU Int 2015; 115:686-97. [DOI: 10.1111/bju.12876] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Yves Deruyver
- Laboratory of Experimental Urology; Department of Development and Regeneration; KU Leuven; Leuven Belgium
- University Hospitals Leuven; Leuven Belgium
- TRP Research Platform Leuven (TRPLe); Leuven Belgium
| | - Thomas Voets
- Laboratory for Ion Channel Research; Department of Molecular Cell Biology; KU Leuven; Leuven Belgium
- TRP Research Platform Leuven (TRPLe); Leuven Belgium
| | - Dirk De Ridder
- Laboratory of Experimental Urology; Department of Development and Regeneration; KU Leuven; Leuven Belgium
- University Hospitals Leuven; Leuven Belgium
- TRP Research Platform Leuven (TRPLe); Leuven Belgium
| | - Wouter Everaerts
- Laboratory of Experimental Urology; Department of Development and Regeneration; KU Leuven; Leuven Belgium
- TRP Research Platform Leuven (TRPLe); Leuven Belgium
- Royal Melbourne Hospital; Melbourne Australia
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Abstract
The use of medicinal plants or other naturally derived products to relieve illness can be traced back over several millennia, and these natural products are still extensively used nowadays. Studies on natural products have, over the years, enormously contributed to the development of therapeutic drugs used in modern medicine. By means of the use of these substances as selective agonists, antagonists, enzyme inhibitors or activators, it has been possible to understand the complex function of many relevant targets. For instance, in an attempt to understand how pepper species evoke hot and painful actions, the pungent and active constituent capsaicin (from Capsicum sp.) was isolated in 1846 and the receptor for the biological actions of capsaicin was cloned in 1997, which is now known as TRPV1 (transient receptor potential vanilloid 1). Thus, TRPV1 agonists and antagonists have currently been tested in order to find new drug classes to treat different disorders. Indeed, the transient receptor potential (TRP) proteins are targets for several natural compounds, and antagonists of TRPs have been synthesised based on the knowledge of naturally derived products. In this context, this chapter focuses on naturally derived compounds (from plants and animals) that are reported to be able to modulate TRP channels. To clarify and make the understanding of the modulatory effects of natural compounds on TRPs easier, this chapter is divided into groups according to TRP subfamilies: TRPV (TRP vanilloid), TRPA (TRP ankyrin), TRPM (TRP melastatin), TRPC (TRP canonical) and TRPP (TRP polycystin). A general overview on the naturally derived compounds that modulate TRPs is depicted in Table 1.
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Affiliation(s)
- Flavia Carla Meotti
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, 05508-000, São Paulo, SP, Brazil
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