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Desbois M, Grill B. Molecular regulation of axon termination in mechanosensory neurons. Development 2024; 151:dev202945. [PMID: 39268828 DOI: 10.1242/dev.202945] [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] [Indexed: 09/15/2024]
Abstract
Spatially and temporally accurate termination of axon outgrowth, a process called axon termination, is required for efficient, precise nervous system construction and wiring. The mechanosensory neurons that sense low-threshold mechanical stimulation or gentle touch have proven exceptionally valuable for studying axon termination over the past 40 years. In this Review, we discuss progress made in deciphering the molecular and genetic mechanisms that govern axon termination in touch receptor neurons. Findings across model organisms, including Caenorhabditis elegans, Drosophila, zebrafish and mice, have revealed that complex signaling is required for termination with conserved principles and players beginning to surface. A key emerging theme is that axon termination is mediated by complex signaling networks that include ubiquitin ligase signaling hubs, kinase cascades, transcription factors, guidance/adhesion receptors and growth factors. Here, we begin a discussion about how these signaling networks could represent termination codes that trigger cessation of axon outgrowth in different species and types of mechanosensory neurons.
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Affiliation(s)
- Muriel Desbois
- School of Life Sciences, Keele University, Keele, Staffordshire, ST5 5BG, UK
| | - Brock Grill
- Center for Integrative Brain Research, Seattle Children's Research Institute, Seattle, WA 98101, USA
- Department of Pediatrics, University of Washington School of Medicine, Seattle, WA 98101, USA
- Department of Pharmacology, University of Washington School of Medicine, Seattle, WA 98101, USA
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2
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Zhang ZX, Tian Y, Li S, Jing HB, Cai J, Li M, Xing GG. Involvement of HDAC2-mediated kcnq2/kcnq3 genes transcription repression activated by EREG/EGFR-ERK-Runx1 signaling in bone cancer pain. Cell Commun Signal 2024; 22:416. [PMID: 39192337 DOI: 10.1186/s12964-024-01797-2] [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: 06/12/2024] [Accepted: 08/18/2024] [Indexed: 08/29/2024] Open
Abstract
Bone cancer pain (BCP) represents a prevalent symptom among cancer patients with bone metastases, yet its underlying mechanisms remain elusive. This study investigated the transcriptional regulation mechanism of Kv7(KCNQ)/M potassium channels in DRG neurons and its involvement in the development of BCP in rats. We show that HDAC2-mediated transcriptional repression of kcnq2/kcnq3 genes, which encode Kv7(KCNQ)/M potassium channels in dorsal root ganglion (DRG), contributes to the sensitization of DRG neurons and the pathogenesis of BCP in rats. Also, HDAC2 requires the formation of a corepressor complex with MeCP2 and Sin3A to execute transcriptional regulation of kcnq2/kcnq3 genes. Moreover, EREG is identified as an upstream signal molecule for HDAC2-mediated kcnq2/kcnq3 genes transcription repression. Activation of EREG/EGFR-ERK-Runx1 signaling, followed by the induction of HDAC2-mediated transcriptional repression of kcnq2/kcnq3 genes in DRG neurons, leads to neuronal hyperexcitability and pain hypersensitivity in tumor-bearing rats. Consequently, the activation of EREG/EGFR-ERK-Runx1 signaling, along with the subsequent transcriptional repression of kcnq2/kcnq3 genes by HDAC2 in DRG neurons, underlies the sensitization of DRG neurons and the pathogenesis of BCP in rats. These findings uncover a potentially targetable mechanism contributing to bone metastasis-associated pain in cancer patients.
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Affiliation(s)
- Zi-Xian Zhang
- Department of Neurobiology, School of Basic Medical Sciences, Peking University Health Science Center and Neuroscience Research Institute, Peking University, Beijing, China
| | - Yue Tian
- Department of Neurobiology, School of Basic Medical Sciences, Peking University Health Science Center and Neuroscience Research Institute, Peking University, Beijing, China
- Key Laboratory for Neuroscience, Ministry of Education of China & National Health Commission of China, Beijing, 100191, China
| | - Song Li
- Department of Neurobiology, School of Basic Medical Sciences, Peking University Health Science Center and Neuroscience Research Institute, Peking University, Beijing, China
| | - Hong-Bo Jing
- Department of Neurobiology, School of Basic Medical Sciences, Peking University Health Science Center and Neuroscience Research Institute, Peking University, Beijing, China
| | - Jie Cai
- Department of Neurobiology, School of Basic Medical Sciences, Peking University Health Science Center and Neuroscience Research Institute, Peking University, Beijing, China
- Key Laboratory for Neuroscience, Ministry of Education of China & National Health Commission of China, Beijing, 100191, China
| | - Min Li
- Department of Anesthesiology, Peking University Third Hospital, Beijing, 100191, China.
| | - Guo-Gang Xing
- Department of Neurobiology, School of Basic Medical Sciences, Peking University Health Science Center and Neuroscience Research Institute, Peking University, Beijing, China.
- Key Laboratory for Neuroscience, Ministry of Education of China & National Health Commission of China, Beijing, 100191, China.
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3
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Hardowar L, Valentine T, Da Vitoria Lobo M, Corbett J, Owen B, Skeen O, Tomblin L, Sharma D, Elphick-Ross J, Philip Hulse R. Cisplatin induced alterations in nociceptor developmental trajectory elicits a TrkA dependent platinum-based chemotherapy induced neuropathic pain. Neuroscience 2024; 559:39-53. [PMID: 39187001 DOI: 10.1016/j.neuroscience.2024.08.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Revised: 08/15/2024] [Accepted: 08/19/2024] [Indexed: 08/28/2024]
Abstract
Cisplatin-based chemotherapy is a common treatment for paediatric cancer. Unfortunately, cisplatin treatment causes neuropathic pain, a highly prevalent adverse health related complication in adult childhood cancer survivors. Due to minimal understanding of this condition, there are currently no condition tailored analgesics available. Here we investigated an alteration in nociceptor maturation that results in neuronal sensitisation and manifestation of cisplatin induced survivorship pain in a TrkA dependent manner. Cisplatin was administered (i.p. 0.1 mg/kg Postnatal day 14 and 16) to neonatal male and female Wistar rats and nociceptive behavioural assays were performed. In vitro studies utilised isolated neonatal dorsal root ganglia sensory neurons treated with cisplatin (5 μg/ml) to elucidate impact upon nociceptor activation and neurite growth, in combination with TrkA inhibition (GW441756 10 nM and 100 nM). Cisplatin treated male and female neonatal Wistar rats developed a delayed but lasting mechanical and heat hypersensitivity. Cisplatin administration led to increased TrkA expression in dorsal root ganglia sensory neurons. Nerve growth factor (NGF) induced TrkA activation led to sensory neuritogenesis and nociceptor sensitisation, which could be prevented through pharmacological TrkA inhibition (GW441756 either s.c. 100 nM or i.p. 2 mg/kg). Administration of TrkA antagonist suppressed cisplatin induced TRPV1 mediated nociceptor sensitisation and prevented cisplatin induced neuropathic pain. These studies provide greater understanding of the underlying mechanisms that cause cisplatin induced childhood cancer survivorship pain and allowing identification of potential therapeutic targets.
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Affiliation(s)
- Lydia Hardowar
- School of Science and Technology, Nottingham Trent University, Nottingham NG11 8NS, UK
| | - Tameille Valentine
- School of Science and Technology, Nottingham Trent University, Nottingham NG11 8NS, UK
| | - Marlene Da Vitoria Lobo
- Division of Cancer and Stem Cells, School of Medicine, University of Nottingham, Nottingham NG7 2UH, UK
| | - Jack Corbett
- School of Science and Technology, Nottingham Trent University, Nottingham NG11 8NS, UK
| | - Beccy Owen
- School of Science and Technology, Nottingham Trent University, Nottingham NG11 8NS, UK
| | - Oliver Skeen
- School of Science and Technology, Nottingham Trent University, Nottingham NG11 8NS, UK
| | - Lucy Tomblin
- Division of Cancer and Stem Cells, School of Medicine, University of Nottingham, Nottingham NG7 2UH, UK
| | - Dhyana Sharma
- School of Science and Technology, Nottingham Trent University, Nottingham NG11 8NS, UK
| | - Jasmine Elphick-Ross
- School of Science and Technology, Nottingham Trent University, Nottingham NG11 8NS, UK
| | - Richard Philip Hulse
- School of Science and Technology, Nottingham Trent University, Nottingham NG11 8NS, UK.
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4
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Zhu S, Chen W, Masson A, Li YP. Cell signaling and transcriptional regulation of osteoblast lineage commitment, differentiation, bone formation, and homeostasis. Cell Discov 2024; 10:71. [PMID: 38956429 PMCID: PMC11219878 DOI: 10.1038/s41421-024-00689-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Accepted: 05/04/2024] [Indexed: 07/04/2024] Open
Abstract
The initiation of osteogenesis primarily occurs as mesenchymal stem cells undergo differentiation into osteoblasts. This differentiation process plays a crucial role in bone formation and homeostasis and is regulated by two intricate processes: cell signal transduction and transcriptional gene expression. Various essential cell signaling pathways, including Wnt, BMP, TGF-β, Hedgehog, PTH, FGF, Ephrin, Notch, Hippo, and Piezo1/2, play a critical role in facilitating osteoblast differentiation, bone formation, and bone homeostasis. Key transcriptional factors in this differentiation process include Runx2, Cbfβ, Runx1, Osterix, ATF4, SATB2, and TAZ/YAP. Furthermore, a diverse array of epigenetic factors also plays critical roles in osteoblast differentiation, bone formation, and homeostasis at the transcriptional level. This review provides an overview of the latest developments and current comprehension concerning the pathways of cell signaling, regulation of hormones, and transcriptional regulation of genes involved in the commitment and differentiation of osteoblast lineage, as well as in bone formation and maintenance of homeostasis. The paper also reviews epigenetic regulation of osteoblast differentiation via mechanisms, such as histone and DNA modifications. Additionally, we summarize the latest developments in osteoblast biology spurred by recent advancements in various modern technologies and bioinformatics. By synthesizing these insights into a comprehensive understanding of osteoblast differentiation, this review provides further clarification of the mechanisms underlying osteoblast lineage commitment, differentiation, and bone formation, and highlights potential new therapeutic applications for the treatment of bone diseases.
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Affiliation(s)
- Siyu Zhu
- Division in Cellular and Molecular Medicine, Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, Tulane University, New Orleans, LA, USA
| | - Wei Chen
- Division in Cellular and Molecular Medicine, Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, Tulane University, New Orleans, LA, USA.
| | - Alasdair Masson
- Division in Cellular and Molecular Medicine, Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, Tulane University, New Orleans, LA, USA
| | - Yi-Ping Li
- Division in Cellular and Molecular Medicine, Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, Tulane University, New Orleans, LA, USA.
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Nakai R, Yokota T, Tokunaga M, Takaishi M, Yokomizo T, Sudo T, Shi H, Yasumizu Y, Okuzaki D, Kokubu C, Tanaka S, Takaoka K, Yamanishi A, Yoshida J, Watanabe H, Kondoh G, Horie K, Hosen N, Sano S, Takeda J. A newly identified gene Ahed plays essential roles in murine haematopoiesis. Nat Commun 2024; 15:5090. [PMID: 38918373 PMCID: PMC11199565 DOI: 10.1038/s41467-024-49252-7] [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: 07/15/2023] [Accepted: 05/29/2024] [Indexed: 06/27/2024] Open
Abstract
The development of haematopoiesis involves the coordinated action of numerous genes, some of which are implicated in haematological malignancies. However, the biological function of many genes remains elusive and unknown functional genes are likely to remain to be uncovered. Here, we report a previously uncharacterised gene in haematopoiesis, identified by screening mutant embryonic stem cells. The gene, 'attenuated haematopoietic development (Ahed)', encodes a nuclear protein. Conditional knockout (cKO) of Ahed results in anaemia from embryonic day 14.5 onward, leading to prenatal demise. Transplantation experiments demonstrate the incapacity of Ahed-deficient haematopoietic cells to reconstitute haematopoiesis in vivo. Employing a tamoxifen-inducible cKO model, we further reveal that Ahed deletion impairs the intrinsic capacity of haematopoietic cells in adult mice. Ahed deletion affects various pathways, and published databases present cancer patients with somatic mutations in Ahed. Collectively, our findings underscore the fundamental roles of Ahed in lifelong haematopoiesis, implicating its association with malignancies.
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Affiliation(s)
- Ritsuko Nakai
- Department of Haematology and Oncology, Graduate School of Medicine, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Takafumi Yokota
- Department of Haematology and Oncology, Graduate School of Medicine, Osaka University, Suita, Osaka, 565-0871, Japan.
- Department of Haematology, Osaka International Cancer Institute, Osaka, Osaka, 541-8567, Japan.
| | - Masahiro Tokunaga
- Department of Haematology, Suita Municipal Hospital, Suita, Osaka, 564-0018, Japan
- Department of Genome Biology, Graduate School of Medicine, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Mikiro Takaishi
- Department of Dermatology, Kochi Medical School, Kochi University, Nankoku, Kochi, 783-8505, Japan
| | - Tomomasa Yokomizo
- Department of Microscopic and Developmental Anatomy, Tokyo Women's Medical University, Shinjuku-ku, Tokyo, 162-8666, Japan
| | - Takao Sudo
- Department of Haematology and Oncology, Graduate School of Medicine, Osaka University, Suita, Osaka, 565-0871, Japan
- Department of Haematology, National Hospital Organisation Osaka National Hospital, Osaka, Osaka, 540-0006, Japan
| | - Henyun Shi
- Department of Haematology and Oncology, Graduate School of Medicine, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Yoshiaki Yasumizu
- Department of Experimental Immunology, Immunology Frontier Research Centre, Osaka University, Suita, Osaka, 565-0871, Japan
- Integrated Frontier Research for Medical Science Division, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Daisuke Okuzaki
- Integrated Frontier Research for Medical Science Division, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Suita, Osaka, 565-0871, Japan
- Genome Information Research Centre, Research Institute for Microbial Diseases, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Chikara Kokubu
- Department of Genome Biology, Graduate School of Medicine, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Sachiyo Tanaka
- Department of Genome Biology, Graduate School of Medicine, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Katsuyoshi Takaoka
- Developmental Genetics Group, Graduate School of Frontier Biosciences, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Ayako Yamanishi
- Department of Genome Biology, Graduate School of Medicine, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Junko Yoshida
- Department of Genome Biology, Graduate School of Medicine, Osaka University, Suita, Osaka, 565-0871, Japan
- Department of Physiology II, Nara Medical University, Kashihara, Nara, 634-8521, Japan
| | - Hitomi Watanabe
- Laboratory of Animal Experiments for Regeneration, Institute for Frontier Life and Medical Sciences, Kyoto University, Kyoto, Kyoto, 606-8507, Japan
| | - Gen Kondoh
- Laboratory of Animal Experiments for Regeneration, Institute for Frontier Life and Medical Sciences, Kyoto University, Kyoto, Kyoto, 606-8507, Japan
| | - Kyoji Horie
- Department of Genome Biology, Graduate School of Medicine, Osaka University, Suita, Osaka, 565-0871, Japan
- Department of Physiology II, Nara Medical University, Kashihara, Nara, 634-8521, Japan
| | - Naoki Hosen
- Department of Haematology and Oncology, Graduate School of Medicine, Osaka University, Suita, Osaka, 565-0871, Japan
- Integrated Frontier Research for Medical Science Division, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Suita, Osaka, 565-0871, Japan
- Laboratory of Cellular Immunotherapy, World Premier International Immunology Frontier Research Centre, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Shigetoshi Sano
- Department of Dermatology, Kochi Medical School, Kochi University, Nankoku, Kochi, 783-8505, Japan
| | - Junji Takeda
- Research Institute for Microbial Diseases, Osaka University, Suita, Osaka, 565-0871, Japan.
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Ferron L, Harding EK, Gandini MA, Brideau C, Stys PK, Zamponi GW. Functional remodeling of presynaptic voltage-gated calcium channels in superficial layers of the dorsal horn during neuropathic pain. iScience 2024; 27:109973. [PMID: 38827405 PMCID: PMC11140212 DOI: 10.1016/j.isci.2024.109973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 04/29/2024] [Accepted: 05/10/2024] [Indexed: 06/04/2024] Open
Abstract
N- and P/Q-type voltage-gated Ca2+ channels are critical for synaptic transmission. While their expression is increased in the dorsal root ganglion (DRG) neuron cell bodies during neuropathic pain conditions, less is known about their synaptic remodeling. Here, we combined genetic tools with 2-photon Ca2+ imaging to explore the functional remodeling that occurs in central presynaptic terminals of DRG neurons during neuropathic pain. We imaged GCaMP6s fluorescence responses in an ex vivo spinal cord preparation from mice expressing GCaMP6s in Trpv1-Cre lineage nociceptors. We show that Ca2+ transient amplitude is increased in central terminals of these neurons after spared nerve injury, and that this increase is mediated by both N- and P/Q-type channels. We found that GABA-B receptor-dependent inhibition of Ca2+ transients was potentiated in the superficial layer of the dorsal horn. Our results provide direct evidence toward nerve injury-induced functional remodeling of presynaptic Ca2+ channels in Trpv1-lineage nociceptor terminals.
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Affiliation(s)
- Laurent Ferron
- Department of Clinical Neurosciences, Hotchkiss Brain Institute, Calgary Cumming School of Medicine, University of Calgary, 3330 Hospital Drive NW, Calgary, Alberta T2N 4N1, Canada
| | - Erika K. Harding
- Department of Clinical Neurosciences, Hotchkiss Brain Institute, Calgary Cumming School of Medicine, University of Calgary, 3330 Hospital Drive NW, Calgary, Alberta T2N 4N1, Canada
| | - Maria A. Gandini
- Department of Clinical Neurosciences, Hotchkiss Brain Institute, Calgary Cumming School of Medicine, University of Calgary, 3330 Hospital Drive NW, Calgary, Alberta T2N 4N1, Canada
| | - Craig Brideau
- Department of Clinical Neurosciences, Hotchkiss Brain Institute, Calgary Cumming School of Medicine, University of Calgary, 3330 Hospital Drive NW, Calgary, Alberta T2N 4N1, Canada
| | - Peter K. Stys
- Department of Clinical Neurosciences, Hotchkiss Brain Institute, Calgary Cumming School of Medicine, University of Calgary, 3330 Hospital Drive NW, Calgary, Alberta T2N 4N1, Canada
| | - Gerald W. Zamponi
- Department of Clinical Neurosciences, Hotchkiss Brain Institute, Calgary Cumming School of Medicine, University of Calgary, 3330 Hospital Drive NW, Calgary, Alberta T2N 4N1, Canada
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Malapert P, Robert G, Brunet E, Chemin J, Bourinet E, Moqrich A. A novel Na v1.8-FLPo driver mouse for intersectional genetics to uncover the functional significance of primary sensory neuron diversity. iScience 2024; 27:109396. [PMID: 38510134 PMCID: PMC10952036 DOI: 10.1016/j.isci.2024.109396] [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: 08/18/2023] [Revised: 11/08/2023] [Accepted: 02/28/2024] [Indexed: 03/22/2024] Open
Abstract
The recent development of single-cell and single-nucleus RNA sequencing has highlighted the extraordinary diversity of dorsal root ganglia neurons. However, the few available genetic tools limit our understanding of the functional significance of this heterogeneity. We generated a new mouse line expressing the flippase recombinase from the scn10a locus. By crossing Nav1.8Ires-FLPo mice with the AdvillinCre and RC::FL-hM3Dq mouse lines in an intersectional genetics approach, we were able to obtain somatodendritic expression of hM3Dq-mCherry selectively in the Nav1.8 lineage. The bath application of clozapine N-oxide triggered strong calcium responses selectively in mCherry+ neurons. The intraplantar injection of CNO caused robust flinching, shaking, and biting responses accompanied by strong cFos activation in the ipsilateral lumbar spinal cord. The Nav1.8Ires-FLPo mouse model will be a valuable tool for extending our understanding of the in vivo functional specialization of neuronal subsets of the Nav1.8 lineage for which inducible Cre lines are available.
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Affiliation(s)
- Pascale Malapert
- Aix-Marseille Université, CNRS, Institut de Biologie du Développement de Marseille, UMR 7288, case 907, 13288 Marseille Cedex 09, Marseille, France
| | - Guillaume Robert
- Aix-Marseille Université, CNRS, Institut de Biologie du Développement de Marseille, UMR 7288, case 907, 13288 Marseille Cedex 09, Marseille, France
| | - Elena Brunet
- Aix-Marseille Université, CNRS, Institut de Biologie du Développement de Marseille, UMR 7288, case 907, 13288 Marseille Cedex 09, Marseille, France
| | - Jean Chemin
- Institut de Génomique Fonctionnelle (IGF), Université de Montpellier, CNRS, INSERM, Montpellier, France
| | - Emmanuel Bourinet
- Institut de Génomique Fonctionnelle (IGF), Université de Montpellier, CNRS, INSERM, Montpellier, France
| | - Aziz Moqrich
- Aix-Marseille Université, CNRS, Institut de Biologie du Développement de Marseille, UMR 7288, case 907, 13288 Marseille Cedex 09, Marseille, France
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Rehman NU, Ullah A, Mahmood MA, Rahman N, Sohail M, Iqbal S, Juraev N, Althubeiti K, Al Otaibi S, Khan R. Cobalt-doped zinc oxide based memristors with nociceptor characteristics for bio-inspired technology. RSC Adv 2024; 14:11797-11810. [PMID: 38617576 PMCID: PMC11009837 DOI: 10.1039/d4ra01250j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2024] [Accepted: 04/01/2024] [Indexed: 04/16/2024] Open
Abstract
Neuromorphic computing is a new field of information technology, which is inspired by the biomimetic properties of the memristor as an electronic synapse and neuron. If there are electronic receptors that can transmit exterior impulses to the internal nervous system, then the use of memristors can be expanded to artificial nerves. In this study, a layer type memristor is used to build an artificial nociceptor in a very feasible and straightforward manner. An artificial nociceptor is demonstrated here through the fabrication and characterization of a cobalt-doped zinc oxide (CZO)/Au based memristor. In order to increase threshold switching performance, the surface effects of the CZO layer are eliminated by adding cobalt cobalt-doped zinc oxide (CZO) layer between the P++-Si and Au electrodes. Allodynia, hyperalgesia, threshold, and relaxation are the four distinct nociceptive behaviours that the device displays based on the strength, rate of relapse, and duration of the external stimuli. The electrons that are trapped in or released from the CZO layer's traps are responsible for these nociceptive behaviours. A multipurpose nociceptor performance is produced by this type of CZO-based device, which is crucial for artificial intelligence system applications such as neural integrated devices with nanometer-sized characteristics.
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Affiliation(s)
- Naveed Ur Rehman
- Department of Physics, University of Lakki Marwat Lakki Marwat 2842 KP Pakistan
| | - Aziz Ullah
- Department of Physics, University of Lakki Marwat Lakki Marwat 2842 KP Pakistan
| | | | - Nasir Rahman
- Department of Physics, University of Lakki Marwat Lakki Marwat 2842 KP Pakistan
| | - Mohammad Sohail
- Department of Physics, University of Lakki Marwat Lakki Marwat 2842 KP Pakistan
| | - Shahid Iqbal
- Department of Physics, University of Wisconsin La Crosse WI 54601 USA
| | - Nizomiddin Juraev
- Faculty of Chemical Engineering, New Uzbekistan University Tashkent Uzbekistan
- Scientific and Innovation Department, Tashkent State Pedagogical University Tashkent Uzbekistan
| | - Khaled Althubeiti
- Department of Chemistry, College of Science, Taif University P.O. BOX. 110 21944 Taif Saudi Arabia
| | - Sattam Al Otaibi
- Department of Electrical Engineering, College of Engineering Taif University P.O. Box 11099 Taif 21944 Saudi Arabia
| | - Rajwali Khan
- Department of Physics, University of Lakki Marwat Lakki Marwat 2842 KP Pakistan
- Department of Physics, United Arab Emirates University Al Ain 15551 Abu Dhabi UAE
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9
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Gao J, Pei H, Lv F, Niu X, You Y, He L, Hu S, Shah KM, Liu M, Chen Y, Du B, Xiong H, Luo J. JD-312 - A novel small molecule that facilitates cartilage repair and alleviates osteoarthritis progression. J Orthop Translat 2024; 44:60-71. [PMID: 38269355 PMCID: PMC10805627 DOI: 10.1016/j.jot.2023.11.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 08/12/2023] [Accepted: 11/21/2023] [Indexed: 01/26/2024] Open
Abstract
Background The chondrogenic differentiation of mesenchymal stem cells (MSCs) to enhance cartilage repair and regeneration is a promising strategy to alleviate osteoarthritis (OA) progression. Method The potency of JD-312 in inducing chondrogenic differentiation of MSCs was assessed and verified. The efficacy of JD-312-treated MSCs was evaluated using a Sprague-Dawley rat DMM model. Additionally, the capacity of JD-312 to successfully recruit bone marrow-derived mesenchymal stem cells (BMSCs) for the treatment of OA in vitro was confirmed via intra-articular injection. The repair status of the articular cartilage was analyzed in vivo through histological examination. Result In this study, we identify JD-312 as a novel non-toxic small molecule that can promote chondrogenic differentiation in human umbilical cord-derived MSCs (hUCMSCs) and human bone marrow MSCS (hBMSCs) in vitro. We also show that transient differentiation of MSCs with JD-312 prior to in vivo administration remarkably improves the regeneration of cartilage and promotes Col2a1 and Acan expression in rat models of DMM, in comparison to kartogenin (KGN) pre-treatment or MSCs alone. Furthermore, direct intra-articular injection of JD-312 in murine model of OA showed reduced loss of articular cartilage and improved pain parameters. Lastly, we identified that the effects of JD-312 are at least in part mediated via upregulation of genes associated with the focal adhesion, PI3K-Akt signaling and the ECM-receptor interaction pathways, and specifically cartilage oligomeric matrix protein (COMP) may play a vital role. Conclusion Our study demonstrated that JD-312 showed encouraging repair effects for OA in vivo. The translational potential of this article Together, our findings demonstrate that JD-312 is a promising new therapeutic molecule for cartilage regeneration with clinical potential.
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Affiliation(s)
- Jingduo Gao
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, PR China
| | - Haixiang Pei
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, PR China
- Institute for Advanced Study, Shenzhen University and Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Shenzhen University Health Science Center, Shenzhen, PR China
| | - Fang Lv
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, PR China
| | - Xin Niu
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, PR China
| | - Yu You
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, PR China
| | - Liang He
- Yangzhi Rehabilitation Hospital (Shanghai Sunshine Rehabilitation Center), Tongji University School of Medicine, Shanghai, PR China
| | - Shijia Hu
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, PR China
| | - Karan M. Shah
- Department of Oncology and Metabolism, The Medical School, The University of Sheffield, Sheffield, United Kingdom
| | - Mingyao Liu
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, PR China
| | - Yihua Chen
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, PR China
| | - Bing Du
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, PR China
| | - Hai Xiong
- Institute for Advanced Study, Shenzhen University and Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Shenzhen University Health Science Center, Shenzhen, PR China
| | - Jian Luo
- Yangzhi Rehabilitation Hospital (Shanghai Sunshine Rehabilitation Center), Tongji University School of Medicine, Shanghai, PR China
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10
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Vermeiren S, Cabochette P, Dannawi M, Desiderio S, San José AS, Achouri Y, Kricha S, Sitte M, Salinas-Riester G, Vanhollebeke B, Brunet JF, Bellefroid EJ. Prdm12 represses the expression of the visceral neuron determinants Phox2a/b in developing somatosensory ganglia. iScience 2023; 26:108364. [PMID: 38025786 PMCID: PMC10663820 DOI: 10.1016/j.isci.2023.108364] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 10/13/2023] [Accepted: 10/26/2023] [Indexed: 12/01/2023] Open
Abstract
Prdm12 is a transcriptional regulator essential for the emergence of the somatic nociceptive lineage during sensory neurogenesis. The exact mechanisms by which Prdm12 promotes nociceptor development remain, however, poorly understood. Here, we report that the trigeminal and dorsal root ganglia hypoplasia induced by the loss of Prdm12 involves Bax-dependent apoptosis and that it is accompanied by the ectopic expression of the visceral sensory neuron determinants Phox2a and Phox2b, which is, however, not sufficient to impose a complete fate switch in surviving somatosensory neurons. Mechanistically, our data reveal that Prdm12 is required from somatosensory neural precursors to early post-mitotic differentiating nociceptive neurons to repress Phox2a/b and that its repressive function is context dependent. Together, these findings reveal that besides its essential role in nociceptor survival during development, Prdm12 also promotes nociceptor fate via an additional mechanism, by preventing precursors from engaging into an alternate Phox2 driven visceral neuronal type differentiation program.
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Affiliation(s)
- Simon Vermeiren
- Department of Molecular Biology, ULB Neuroscience Institute (UNI), Université libre de Bruxelles (ULB), B-6041 Gosselies, Belgium
| | - Pauline Cabochette
- Department of Molecular Biology, ULB Neuroscience Institute (UNI), Université libre de Bruxelles (ULB), B-6041 Gosselies, Belgium
| | - Maya Dannawi
- Department of Molecular Biology, ULB Neuroscience Institute (UNI), Université libre de Bruxelles (ULB), B-6041 Gosselies, Belgium
| | - Simon Desiderio
- Department of Molecular Biology, ULB Neuroscience Institute (UNI), Université libre de Bruxelles (ULB), B-6041 Gosselies, Belgium
| | - Alba Sabaté San José
- Department of Molecular Biology, ULB Neuroscience Institute (UNI), Université libre de Bruxelles (ULB), B-6041 Gosselies, Belgium
| | - Younes Achouri
- Transgenesis Platform, de Duve Institute, Université Catholique de Louvain, Institut de Duve, Brussels, Belgium
| | - Sadia Kricha
- Department of Molecular Biology, ULB Neuroscience Institute (UNI), Université libre de Bruxelles (ULB), B-6041 Gosselies, Belgium
| | - Maren Sitte
- NGS Integrative Genomics, Department of Human Genetics at the University Medical Center Göttingen (UMG), 37075 Göttingen, Germany
| | - Gabriela Salinas-Riester
- NGS Integrative Genomics, Department of Human Genetics at the University Medical Center Göttingen (UMG), 37075 Göttingen, Germany
| | - Benoit Vanhollebeke
- Department of Molecular Biology, ULB Neuroscience Institute (UNI), Université libre de Bruxelles (ULB), B-6041 Gosselies, Belgium
| | - Jean-François Brunet
- Institut de Biologie de l’ENS (IBENS), Inserm, CNRS, École Normale Supérieure, PSL Research University, 75005 Paris, France
- Centre National de la Recherche Scientifique, Unité Mixte de Recherche 8197, 75005 Paris, France
- Institut National de la Santé et de la Recherche Médicale U1024, 75005 Paris, France
| | - Eric J. Bellefroid
- Department of Molecular Biology, ULB Neuroscience Institute (UNI), Université libre de Bruxelles (ULB), B-6041 Gosselies, Belgium
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11
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Yu H, Usoskin D, Nagi SS, Hu Y, Kupari J, Bouchatta O, Cranfill SL, Gautam M, Su Y, Lu Y, Wymer J, Glanz M, Albrecht P, Song H, Ming GL, Prouty S, Seykora J, Wu H, Ma M, Rice FL, Olausson H, Ernfors P, Luo W. Single-Soma Deep RNA sequencing of Human DRG Neurons Reveals Novel Molecular and Cellular Mechanisms Underlying Somatosensation. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.03.17.533207. [PMID: 36993480 PMCID: PMC10055202 DOI: 10.1101/2023.03.17.533207] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
The versatility of somatosensation arises from heterogeneous dorsal root ganglion (DRG) neurons. However, soma transcriptomes of individual human DRG (hDRG) neurons-critical in-formation to decipher their functions-are lacking due to technical difficulties. Here, we developed a novel approach to isolate individual hDRG neuron somas for deep RNA sequencing (RNA-seq). On average, >9,000 unique genes per neuron were detected, and 16 neuronal types were identified. Cross-species analyses revealed remarkable divergence among pain-sensing neurons and the existence of human-specific nociceptor types. Our deep RNA-seq dataset was especially powerful for providing insight into the molecular mechanisms underlying human somatosensation and identifying high potential novel drug targets. Our dataset also guided the selection of molecular markers to visualize different types of human afferents and the discovery of novel functional properties using single-cell in vivo electrophysiological recordings. In summary, by employing a novel soma sequencing method, we generated an unprecedented hDRG neuron atlas, providing new insights into human somatosensation, establishing a critical foundation for translational work, and clarifying human species-species properties.
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12
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Rozen EJ, Ozeroff CD, Allen MA. RUN(X) out of blood: emerging RUNX1 functions beyond hematopoiesis and links to Down syndrome. Hum Genomics 2023; 17:83. [PMID: 37670378 PMCID: PMC10481493 DOI: 10.1186/s40246-023-00531-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Accepted: 08/29/2023] [Indexed: 09/07/2023] Open
Abstract
BACKGROUND RUNX1 is a transcription factor and a master regulator for the specification of the hematopoietic lineage during embryogenesis and postnatal megakaryopoiesis. Mutations and rearrangements on RUNX1 are key drivers of hematological malignancies. In humans, this gene is localized to the 'Down syndrome critical region' of chromosome 21, triplication of which is necessary and sufficient for most phenotypes that characterize Trisomy 21. MAIN BODY Individuals with Down syndrome show a higher predisposition to leukemias. Hence, RUNX1 overexpression was initially proposed as a critical player on Down syndrome-associated leukemogenesis. Less is known about the functions of RUNX1 in other tissues and organs, although growing reports show important implications in development or homeostasis of neural tissues, muscle, heart, bone, ovary, or the endothelium, among others. Even less is understood about the consequences on these tissues of RUNX1 gene dosage alterations in the context of Down syndrome. In this review, we summarize the current knowledge on RUNX1 activities outside blood/leukemia, while suggesting for the first time their potential relation to specific Trisomy 21 co-occurring conditions. CONCLUSION Our concise review on the emerging RUNX1 roles in different tissues outside the hematopoietic context provides a number of well-funded hypotheses that will open new research avenues toward a better understanding of RUNX1-mediated transcription in health and disease, contributing to novel potential diagnostic and therapeutic strategies for Down syndrome-associated conditions.
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Affiliation(s)
- Esteban J Rozen
- Crnic Institute Boulder Branch, BioFrontiers Institute, University of Colorado Boulder, 3415 Colorado Ave., Boulder, CO, 80303, USA.
- Linda Crnic Institute for Down Syndrome, University of Colorado Anschutz Medical Campus, 12700 East 19th Avenue, Aurora, CO, 80045, USA.
| | - Christopher D Ozeroff
- Crnic Institute Boulder Branch, BioFrontiers Institute, University of Colorado Boulder, 3415 Colorado Ave., Boulder, CO, 80303, USA
- Linda Crnic Institute for Down Syndrome, University of Colorado Anschutz Medical Campus, 12700 East 19th Avenue, Aurora, CO, 80045, USA
- Department of Molecular, Cellular and Developmental Biology, University of Colorado Boulder, 1945 Colorado Ave., Boulder, CO, 80309, USA
| | - Mary Ann Allen
- Crnic Institute Boulder Branch, BioFrontiers Institute, University of Colorado Boulder, 3415 Colorado Ave., Boulder, CO, 80303, USA.
- Linda Crnic Institute for Down Syndrome, University of Colorado Anschutz Medical Campus, 12700 East 19th Avenue, Aurora, CO, 80045, USA.
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13
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Bustin KA, Shishikura K, Chen I, Lin Z, McKnight N, Chang Y, Wang X, Li JJ, Arellano E, Pei L, Morton PD, Gregus AM, Buczynski MW, Matthews ML. Phenelzine-based probes reveal Secernin-3 is involved in thermal nociception. Mol Cell Neurosci 2023; 125:103842. [PMID: 36924917 PMCID: PMC10247460 DOI: 10.1016/j.mcn.2023.103842] [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: 01/16/2023] [Revised: 03/05/2023] [Accepted: 03/09/2023] [Indexed: 03/17/2023] Open
Abstract
Chemical platforms that facilitate both the identification and elucidation of new areas for therapeutic development are necessary but lacking. Activity-based protein profiling (ABPP) leverages active site-directed chemical probes as target discovery tools that resolve activity from expression and immediately marry the targets identified with lead compounds for drug design. However, this approach has traditionally focused on predictable and intrinsic enzyme functionality. Here, we applied our activity-based proteomics discovery platform to map non-encoded and post-translationally acquired enzyme functionalities (e.g. cofactors) in vivo using chemical probes that exploit the nucleophilic hydrazine pharmacophores found in a classic antidepressant drug (e.g. phenelzine, Nardil®). We show the probes are in vivo active and can map proteome-wide tissue-specific target engagement of the drug. In addition to engaging targets (flavoenzymes monoamine oxidase A/B) that are associated with the known therapeutic mechanism as well as several other members of the flavoenzyme family, the probes captured the previously discovered N-terminal glyoxylyl (Glox) group of Secernin-3 (SCRN3) in vivo through a divergent mechanism, indicating this functional feature has biochemical activity in the brain. SCRN3 protein is ubiquitously expressed in the brain, yet gene expression is regulated by inflammatory stimuli. In an inflammatory pain mouse model, behavioral assessment of nociception showed Scrn3 male knockout mice selectively exhibited impaired thermal nociceptive sensitivity. Our study provides a guided workflow to entangle molecular (off)targets and pharmacological mechanisms for therapeutic development.
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Affiliation(s)
- Katelyn A Bustin
- Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Kyosuke Shishikura
- Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Irene Chen
- School of Neuroscience, Virginia Polytechnic and State University, Blacksburg, VA 24061, USA
| | - Zongtao Lin
- Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Nate McKnight
- Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Yuxuan Chang
- Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Xie Wang
- Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Jing Jing Li
- Center for Mitochondrial and Epigenomic Medicine, Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Eric Arellano
- Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Liming Pei
- Center for Mitochondrial and Epigenomic Medicine, Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Paul D Morton
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Polytechnic and State University, Blacksburg, VA, 24060, USA
| | - Ann M Gregus
- School of Neuroscience, Virginia Polytechnic and State University, Blacksburg, VA 24061, USA.
| | - Matthew W Buczynski
- School of Neuroscience, Virginia Polytechnic and State University, Blacksburg, VA 24061, USA.
| | - Megan L Matthews
- Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104, USA.
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14
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Shrestha BR, Wu L, Goodrich LV. Runx1 controls auditory sensory neuron diversity in mice. Dev Cell 2023; 58:306-319.e5. [PMID: 36800995 PMCID: PMC10202259 DOI: 10.1016/j.devcel.2023.01.008] [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: 08/10/2022] [Revised: 08/28/2022] [Accepted: 01/26/2023] [Indexed: 02/18/2023]
Abstract
Sound stimulus is encoded in mice by three molecularly and physiologically diverse subtypes of sensory neurons, called Ia, Ib, and Ic spiral ganglion neurons (SGNs). Here, we show that the transcription factor Runx1 controls SGN subtype composition in the murine cochlea. Runx1 is enriched in Ib/Ic precursors by late embryogenesis. Upon the loss of Runx1 from embryonic SGNs, more SGNs take on Ia rather than Ib or Ic identities. This conversion was more complete for genes linked to neuronal function than to connectivity. Accordingly, synapses in the Ib/Ic location acquired Ia properties. Suprathreshold SGN responses to sound were enhanced in Runx1CKO mice, confirming the expansion of neurons with Ia-like functional properties. Runx1 deletion after birth also redirected Ib/Ic SGNs toward Ia identity, indicating that SGN identities are plastic postnatally. Altogether, these findings show that diverse neuronal identities essential for normal auditory stimulus coding arise hierarchically and remain malleable during postnatal development.
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Affiliation(s)
- Brikha R Shrestha
- Department of Neurobiology, Harvard Medical School, Boston, MA 02115, USA; Eaton-Peabody Laboratories, Massachusetts Eye and Ear, Boston, MA 02114, USA; Department of Otolaryngology, Harvard Medical School, Boston, MA 02114, USA.
| | - Lorna Wu
- Department of Neurobiology, Harvard Medical School, Boston, MA 02115, USA
| | - Lisa V Goodrich
- Department of Neurobiology, Harvard Medical School, Boston, MA 02115, USA.
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15
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The RUNX Family Defines Trk Phenotype and Aggressiveness of Human Neuroblastoma through Regulation of p53 and MYCN. Cells 2023; 12:cells12040544. [PMID: 36831211 PMCID: PMC9954111 DOI: 10.3390/cells12040544] [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: 01/13/2023] [Revised: 02/03/2023] [Accepted: 02/06/2023] [Indexed: 02/11/2023] Open
Abstract
The Runt-related transcription factor (RUNX) family, which is essential for the differentiation of cells of neural crest origin, also plays a potential role in neuroblastoma tumorigenesis. Consecutive studies in various tumor types have demonstrated that the RUNX family can play either pro-tumorigenic or anti-tumorigenic roles in a context-dependent manner, including in response to chemotherapeutic agents. However, in primary neuroblastomas, RUNX3 acts as a tumor-suppressor, whereas RUNX1 bifunctionally regulates cell proliferation according to the characterized genetic and epigenetic backgrounds, including MYCN oncogenesis. In this review, we first highlight the current knowledge regarding the mechanism through which the RUNX family regulates the neurotrophin receptors known as the tropomyosin-related kinase (Trk) family, which are significantly associated with neuroblastoma aggressiveness. We then focus on the possible involvement of the RUNX family in functional alterations of the p53 family members that execute either tumor-suppressive or dominant-negative functions in neuroblastoma tumorigenesis. By examining the tripartite relationship between the RUNX, Trk, and p53 families, in addition to the oncogene MYCN, we endeavor to elucidate the possible contribution of the RUNX family to neuroblastoma tumorigenesis for a better understanding of potential future molecular-based therapies.
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16
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Bustin KA, Shishikura K, Chen I, Lin Z, McKnight N, Chang Y, Wang X, Li JJ, Arellano E, Pei L, Morton PD, Gregus AM, Buczynski MW, Matthews ML. Phenelzine-based probes reveal Secernin-3 is involved in thermal nociception. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.02.02.526866. [PMID: 36778412 PMCID: PMC9915563 DOI: 10.1101/2023.02.02.526866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Chemical platforms that facilitate both the identification and elucidation of new areas for therapeutic development are necessary but lacking. Activity-based protein profiling (ABPP) leverages active site-directed chemical probes as target discovery tools that resolve activity from expression and immediately marry the targets identified with lead compounds for drug design. However, this approach has traditionally focused on predictable and intrinsic enzyme functionality. Here, we applied our activity-based proteomics discovery platform to map non-encoded and post-translationally acquired enzyme functionalities (e.g. cofactors) in vivo using chemical probes that exploit the nucleophilic hydrazine pharmacophores found in a classic antidepressant drug (e.g. phenelzine, Nardil ® ). We show the probes are in vivo active and can map proteome-wide tissue-specific target engagement of the drug. In addition to engaging targets (flavoenzymes monoamine oxidase A/B) that are associated with the known therapeutic mechanism as well as several other members of the flavoenzyme family, the probes captured the previously discovered N -terminal glyoxylyl (Glox) group of Secernin-3 (SCRN3) in vivo through a divergent mechanism, indicating this functional feature has biochemical activity in the brain. SCRN3 protein is ubiquitously expressed in the brain, yet gene expression is regulated by inflammatory stimuli. In an inflammatory pain mouse model, behavioral assessment of nociception showed Scrn3 male knockout mice selectively exhibited impaired thermal nociceptive sensitivity. Our study provides a guided workflow to entangle molecular (off)targets and pharmacological mechanisms for therapeutic development.
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17
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LIU JIA, WANG FAPING, YUAN BO, LUO FENGMING. Transcriptional factor RUNX1: A potential therapeutic target for fibrotic pulmonary disease. BIOCELL 2023. [DOI: 10.32604/biocell.2023.026148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/10/2023]
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18
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Yuan ZL, Liu XD, Zhang ZX, Li S, Tian Y, Xi K, Cai J, Yang XM, Liu M, Xing GG. Activation of GDNF-ERK-Runx1 signaling contributes to P2X3R gene transcription and bone cancer pain. iScience 2022; 25:104936. [PMID: 36072549 PMCID: PMC9441333 DOI: 10.1016/j.isci.2022.104936] [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: 04/22/2022] [Revised: 07/15/2022] [Accepted: 08/10/2022] [Indexed: 11/24/2022] Open
Abstract
Bone cancer pain is a common symptom in cancer patients with bone metastases and its underlying mechanisms remain unknown. Here, we report that Runx1 directly upregulates the transcriptional activity of P2X3 receptor (P2X3R) gene promoter in PC12 cells. Knocking down Runx1 in dorsal root ganglion (DRG) neurons suppresses the functional upregulation of P2X3R, attenuates neuronal hyperexcitability and pain hypersensitivity in tumor-bearing rats, whereas overexpressing Runx1 promotes P2X3R gene transcription in DRG neurons, induces neuronal hyperexcitability and pain hypersensitivity in naïve rats. Activation of GDNF-GFRα1-Ret-ERK signaling is required for Runx1-mediated P2X3R gene transcription in DRG neurons, and contributes to neuronal hyperexcitability and pain hypersensitivity in tumor-bearing rats. These findings indicate that the Runx1-mediated P2X3R gene transcription resulted from activation of GDNF-GFRα1-Ret-ERK signaling contributes to the sensitization of DRG neurons and pathogenesis of bone cancer pain. Our findings identify a potentially targetable mechanism that may cause bone metastasis-associated pain in cancer patients. Runx1 directly upregulates the transcriptional activity of P2X3R gene promoter Upregulation of Runx1-mediated P2X3R gene transcription underlies bone cancer pain Involvement of GDNF-Ret-ERK signaling in Runx1-mediated P2X3R gene transcription
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19
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Cao Z, Huang C, Lu F, Jiang X, Hu Y, Cao C, Liu Z. Meis1 Regulates Nociceptor Development and Behavioral Response to Tactile Stimuli. Front Mol Neurosci 2022; 15:901466. [PMID: 35875660 PMCID: PMC9301487 DOI: 10.3389/fnmol.2022.901466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Accepted: 06/13/2022] [Indexed: 11/13/2022] Open
Abstract
Nociceptors in the dorsal root ganglia (DRG) and trigeminal ganglia (TG) are necessary for transmitting pain and itch signals. However, the molecular mechanism regulating nociceptor development remains largely unknown. This study identifies that the transcription factor Meis1 is generally expressed in two groups of sensory neurons in the developing DRG. During prenatal and neonatal stages, approximately 2/3 of Meis1+ neurons are Runx1+ nociceptors, while 1/3 of Meis1+ neurons are NF200+ myelinated neurons. At postnatal stages, Meis1 expression in nociceptors is gradually reduced. Here, we constructed a Meis1 conditional knockout mouse line to selectively delete Meis1 in Nav1.8 lineage nociceptors. Microarray analyses showed that differentially expressed genes in the Meis1 mutant DRG were enriched in pathways related to sensory perception of pain and nervous system development. In addition, Meis1 regulates the expression of some marker genes of Nppb+ neurons and C-LTMRs. Furthermore, Meis1 mutant mice exhibit behavioral deficits in response to light mechanical pain, static touch and chemical itch. Therefore, this study reveals that Meis1 is required to regulate the development of nociceptors.
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Affiliation(s)
- Zheng Cao
- Beijing Institute of Biotechnology, Beijing, China.,School of Biological Engineering and Food Science, Hubei University of Technology, Wuhan, China
| | - Chengcheng Huang
- Beijing Institute of Biotechnology, Beijing, China.,General Hospital of Central Theater Command, Wuhan, China
| | - Fumin Lu
- Beijing Institute of Biotechnology, Beijing, China
| | - Xuequan Jiang
- Beijing Institute of Biotechnology, Beijing, China.,School of Biological Engineering and Food Science, Hubei University of Technology, Wuhan, China
| | - Yong Hu
- Beijing Institute of Biotechnology, Beijing, China
| | - Cheng Cao
- Beijing Institute of Biotechnology, Beijing, China
| | - Zijing Liu
- Beijing Institute of Biotechnology, Beijing, China
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20
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Identification of the Potential Molecular Mechanisms Linking RUNX1 Activity with Nonalcoholic Fatty Liver Disease, by Means of Systems Biology. Biomedicines 2022; 10:biomedicines10061315. [PMID: 35740337 PMCID: PMC9219880 DOI: 10.3390/biomedicines10061315] [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: 04/13/2022] [Revised: 05/24/2022] [Accepted: 06/01/2022] [Indexed: 12/10/2022] Open
Abstract
Nonalcoholic fatty liver disease (NAFLD) is the most prevalent chronic hepatic disease; nevertheless, no definitive diagnostic method exists yet, apart from invasive liver biopsy, and nor is there a specific approved treatment. Runt-related transcription factor 1 (RUNX1) plays a major role in angiogenesis and inflammation; however, its link with NAFLD is unclear as controversial results have been reported. Thus, the objective of this work was to determine the proteins involved in the molecular mechanisms between RUNX1 and NAFLD, by means of systems biology. First, a mathematical model that simulates NAFLD pathophysiology was generated by analyzing Anaxomics databases and reviewing available scientific literature. Artificial neural networks established NAFLD pathophysiological processes functionally related to RUNX1: hepatic insulin resistance, lipotoxicity, and hepatic injury-liver fibrosis. Our study indicated that RUNX1 might have a high relationship with hepatic injury-liver fibrosis, and a medium relationship with lipotoxicity and insulin resistance motives. Additionally, we found five RUNX1-regulated proteins with a direct involvement in NAFLD motives, which were NFκB1, NFκB2, TNF, ADIPOQ, and IL-6. In conclusion, we suggested a relationship between RUNX1 and NAFLD since RUNX1 seems to regulate NAFLD molecular pathways, posing it as a potential therapeutic target of NAFLD, although more studies in this field are needed.
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21
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Yang L, Xu M, Bhuiyan SA, Li J, Zhao J, Cohrs RJ, Susterich JT, Signorelli S, Green U, Stone JR, Levy D, Lennerz JK, Renthal W. Human and mouse trigeminal ganglia cell atlas implicates multiple cell types in migraine. Neuron 2022; 110:1806-1821.e8. [PMID: 35349784 PMCID: PMC9338779 DOI: 10.1016/j.neuron.2022.03.003] [Citation(s) in RCA: 66] [Impact Index Per Article: 33.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 01/28/2022] [Accepted: 03/02/2022] [Indexed: 12/13/2022]
Abstract
Sensitization of trigeminal ganglion neurons contributes to primary headache disorders such as migraine, but the specific neuronal and non-neuronal trigeminal subtypes that are involved remain unclear. We thus developed a cell atlas in which human and mouse trigeminal ganglia are transcriptionally and epigenomically profiled at single-cell resolution. These data describe evolutionarily conserved and human-specific gene expression patterns within each trigeminal ganglion cell type, as well as the transcription factors and gene regulatory elements that contribute to cell-type-specific gene expression. We then leveraged these data to identify trigeminal ganglion cell types that are implicated both by human genetic variation associated with migraine and two mouse models of headache. This trigeminal ganglion cell atlas improves our understanding of the cell types, genes, and epigenomic features involved in headache pathophysiology and establishes a rich resource of cell-type-specific molecular features to guide the development of more selective treatments for headache and facial pain.
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Affiliation(s)
- Lite Yang
- Department of Neurology, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02115, USA
| | - Mengyi Xu
- Department of Neurology, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02115, USA
| | - Shamsuddin A Bhuiyan
- Department of Neurology, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02115, USA
| | - Jia Li
- Department of Neurology, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02115, USA
| | - Jun Zhao
- Department of Anesthesia, Critical Care, and Pain Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA 02115, USA
| | - Randall J Cohrs
- Departments of Neurology and Immunology/Microbiology, University of Colorado School of Medicine, Aurora, CO 80045, USA
| | - Justin T Susterich
- Department of Pathology, Center for Integrated Diagnostics, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA
| | - Sylvia Signorelli
- Department of Pathology, Center for Integrated Diagnostics, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA
| | - Ursula Green
- Department of Pathology, Center for Integrated Diagnostics, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA
| | - James R Stone
- Department of Pathology, Center for Integrated Diagnostics, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA
| | - Dan Levy
- Department of Anesthesia, Critical Care, and Pain Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA 02115, USA
| | - Jochen K Lennerz
- Department of Pathology, Center for Integrated Diagnostics, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA
| | - William Renthal
- Department of Neurology, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02115, USA.
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22
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Haag N, Lampert A. Nociception, Transcriptomics ET CETERA: NOCICEPTRA. Pflugers Arch 2022; 474:483-484. [PMID: 35211814 PMCID: PMC8993772 DOI: 10.1007/s00424-022-02673-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 02/15/2022] [Accepted: 02/16/2022] [Indexed: 11/25/2022]
Affiliation(s)
- Natja Haag
- Institute of Human Genetics, Uniklinik RWTH Aachen University, Pauwelsstr. 30, 52074, Aachen, Germany
| | - Angelika Lampert
- Institute of Physiology, Uniklinik RWTH Aachen University, Pauwelsstr. 30, 52074, Aachen, Germany.
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23
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Ma Q. A functional subdivision within the somatosensory system and its implications for pain research. Neuron 2022; 110:749-769. [PMID: 35016037 PMCID: PMC8897275 DOI: 10.1016/j.neuron.2021.12.015] [Citation(s) in RCA: 42] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2021] [Revised: 10/07/2021] [Accepted: 12/09/2021] [Indexed: 12/12/2022]
Abstract
Somatosensory afferents are traditionally classified by soma size, myelination, and their response specificity to external and internal stimuli. Here, we propose the functional subdivision of the nociceptive somatosensory system into two branches. The exteroceptive branch detects external threats and drives reflexive-defensive reactions to prevent or limit injury. The interoceptive branch senses the disruption of body integrity, produces tonic pain with strong aversive emotional components, and drives self-caring responses toward to the injured region to reduce suffering. The central thesis behind this functional subdivision comes from a reflection on the dilemma faced by the pain research field, namely, the use of reflexive-defensive behaviors as surrogate assays for interoceptive tonic pain. The interpretation of these assays is now being challenged by the discovery of distinct but interwoven circuits that drive exteroceptive versus interoceptive types of behaviors, with the conflation of these two components contributing partially to the poor translation of therapies from preclinical studies.
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Affiliation(s)
- Qiufu Ma
- Dana-Farber Cancer Institute and Department of Neurobiology, Harvard Medical School, Boston, MA 02115, USA.
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24
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de Nooij JC. Influencers in the Somatosensory System: Extrinsic Control of Sensory Neuron Phenotypes. Neuroscientist 2022:10738584221074350. [DOI: 10.1177/10738584221074350] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Somatosensory neurons in dorsal root ganglia (DRG) comprise several main subclasses: high threshold nociceptors/thermoceptors, high- and low-threshold mechanoreceptors, and proprioceptors. Recent years have seen an explosion in the identification of molecules that underlie the functional diversity of these sensory modalities. They also have begun to reveal the developmental mechanisms that channel the emergence of this subtype diversity, solidifying the importance of peripheral instructive signals. Somatic sensory neurons collectively serve numerous essential physiological and protective roles, and as such, an increased understanding of the processes that underlie the specialization of these sensory subtypes is not only biologically interesting but also clinically relevant.
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25
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Wistrom E, Chase R, Smith PR, Campbell ZT. A compendium of validated pain genes. WIREs Mech Dis 2022; 14:e1570. [PMID: 35760453 PMCID: PMC9787016 DOI: 10.1002/wsbm.1570] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 05/28/2022] [Accepted: 06/06/2022] [Indexed: 12/30/2022]
Abstract
The development of novel pain therapeutics hinges on the identification and rigorous validation of potential targets. Model organisms provide a means to test the involvement of specific genes and regulatory elements in pain. Here we provide a list of genes linked to pain-associated behaviors. We capitalize on results spanning over three decades to identify a set of 242 genes. They support a remarkable diversity of functions spanning action potential propagation, immune response, GPCR signaling, enzymatic catalysis, nucleic acid regulation, and intercellular signaling. Making use of existing tissue and single-cell high-throughput RNA sequencing datasets, we examine their patterns of expression. For each gene class, we discuss archetypal members, with an emphasis on opportunities for additional experimentation. Finally, we discuss how powerful and increasingly ubiquitous forward genetic screening approaches could be used to improve our ability to identify pain genes. This article is categorized under: Neurological Diseases > Genetics/Genomics/Epigenetics Neurological Diseases > Molecular and Cellular Physiology.
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Affiliation(s)
- Eric Wistrom
- Department of Biological SciencesUniversity of Texas at DallasRichardsonTexasUSA
| | - Rebecca Chase
- Department of Biological SciencesUniversity of Texas at DallasRichardsonTexasUSA
| | - Patrick R. Smith
- Department of Biological SciencesUniversity of Texas at DallasRichardsonTexasUSA
| | - Zachary T. Campbell
- Department of Biological SciencesUniversity of Texas at DallasRichardsonTexasUSA,Center for Advanced Pain StudiesUniversity of Texas at DallasRichardsonTexasUSA
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26
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Holzer AK, Karreman C, Suciu I, Furmanowsky LS, Wohlfarth H, Loser D, Dirks WG, Pardo González E, Leist M. OUP accepted manuscript. Stem Cells Transl Med 2022; 11:727-741. [PMID: 35689659 PMCID: PMC9299516 DOI: 10.1093/stcltm/szac031] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Accepted: 04/09/2022] [Indexed: 11/12/2022] Open
Abstract
In vitro models of the peripheral nervous system would benefit from further refinements to better support studies on neuropathies. In particular, the assessment of pain-related signals is still difficult in human cell cultures. Here, we harnessed induced pluripotent stem cells (iPSCs) to generate peripheral sensory neurons enriched in nociceptors. The objective was to generate a culture system with signaling endpoints suitable for pharmacological and toxicological studies. Neurons generated by conventional differentiation protocols expressed moderate levels of P2X3 purinergic receptors and only low levels of TRPV1 capsaicin receptors, when maturation time was kept to the upper practically useful limit of 6 weeks. As alternative approach, we generated cells with an inducible NGN1 transgene. Ectopic expression of this transcription factor during a defined time window of differentiation resulted in highly enriched nociceptor cultures, as determined by functional (P2X3 and TRPV1 receptors) and immunocytochemical phenotyping, complemented by extensive transcriptome profiling. Single cell recordings of Ca2+-indicator fluorescence from >9000 cells were used to establish the “fraction of reactive cells” in a stimulated population as experimental endpoint, that appeared robust, transparent and quantifiable. To provide an example of application to biomedical studies, functional consequences of prolonged exposure to the chemotherapeutic drug oxaliplatin were examined at non-cytotoxic concentrations. We found (i) neuronal (allodynia-like) hypersensitivity to otherwise non-activating mechanical stimulation that could be blocked by modulators of voltage-gated sodium channels; (ii) hyper-responsiveness to TRPV1 receptor stimulation. These findings and several other measured functional alterations indicate that the model is suitable for pharmacological and toxicological studies related to peripheral neuropathies.
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Affiliation(s)
- Anna-Katharina Holzer
- In vitro Toxicology and Biomedicine, Department Inaugurated by the Doerenkamp-Zbinden Foundation, University of Konstanz, Konstanz, Germany
- Graduate School Biological Sciences (GBS), University of Konstanz, Konstanz, Germany
| | - Christiaan Karreman
- In vitro Toxicology and Biomedicine, Department Inaugurated by the Doerenkamp-Zbinden Foundation, University of Konstanz, Konstanz, Germany
| | - Ilinca Suciu
- In vitro Toxicology and Biomedicine, Department Inaugurated by the Doerenkamp-Zbinden Foundation, University of Konstanz, Konstanz, Germany
| | - Lara-Seline Furmanowsky
- In vitro Toxicology and Biomedicine, Department Inaugurated by the Doerenkamp-Zbinden Foundation, University of Konstanz, Konstanz, Germany
| | - Harald Wohlfarth
- In vitro Toxicology and Biomedicine, Department Inaugurated by the Doerenkamp-Zbinden Foundation, University of Konstanz, Konstanz, Germany
| | - Dominik Loser
- NMI Natural and Medical Sciences Institute at the University of Tübingen, Reutlingen, Germany
| | - Wilhelm G Dirks
- Department of Human and Animal Cell Lines, DSMZ, German Collection of Microorganisms and Cell Cultures and German Biological Resource Center, Braunschweig, Germany
| | - Emilio Pardo González
- NMI Natural and Medical Sciences Institute at the University of Tübingen, Reutlingen, Germany
| | - Marcel Leist
- Corresponding author: Marcel Leist, PhD, In Vitro Toxicology and Biomedicine, Dept Inaugurated by the Doerenkamp-Zbinden Foundation at the University of Konstanz, Universitaetsstr. 10, Konstanz 78457, Germany.
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27
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Trinh BQ, Ummarino S, Zhang Y, Ebralidze AK, Bassal MA, Nguyen TM, Heller G, Coffey R, Tenen DE, van der Kouwe E, Fabiani E, Gurnari C, Wu CS, Angarica VE, Yang H, Chen S, Zhang H, Thurm AR, Marchi F, Levantini E, Staber PB, Zhang P, Voso MT, Pandolfi PP, Kobayashi SS, Chai L, Di Ruscio A, Tenen DG. Myeloid lncRNA LOUP mediates opposing regulatory effects of RUNX1 and RUNX1-ETO in t(8;21) AML. Blood 2021; 138:1331-1344. [PMID: 33971010 PMCID: PMC8525335 DOI: 10.1182/blood.2020007920] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Accepted: 04/18/2021] [Indexed: 11/20/2022] Open
Abstract
The mechanism underlying cell type-specific gene induction conferred by ubiquitous transcription factors as well as disruptions caused by their chimeric derivatives in leukemia is not well understood. Here, we investigate whether RNAs coordinate with transcription factors to drive myeloid gene transcription. In an integrated genome-wide approach surveying for gene loci exhibiting concurrent RNA and DNA interactions with the broadly expressed Runt-related transcription factor 1 (RUNX1), we identified the long noncoding RNA (lncRNA) originating from the upstream regulatory element of PU.1 (LOUP). This myeloid-specific and polyadenylated lncRNA induces myeloid differentiation and inhibits cell growth, acting as a transcriptional inducer of the myeloid master regulator PU.1. Mechanistically, LOUP recruits RUNX1 to both the PU.1 enhancer and the promoter, leading to the formation of an active chromatin loop. In t(8;21) acute myeloid leukemia (AML), wherein RUNX1 is fused to ETO, the resulting oncogenic fusion protein, RUNX1-ETO, limits chromatin accessibility at the LOUP locus, causing inhibition of LOUP and PU.1 expression. These findings highlight the important role of the interplay between cell-type-specific RNAs and transcription factors, as well as their oncogenic derivatives in modulating lineage-gene activation and raise the possibility that RNA regulators of transcription factors represent alternative targets for therapeutic development.
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Affiliation(s)
- Bon Q Trinh
- Harvard Medical School Initiative for RNA Medicine, Harvard Medical School, Boston, MA
| | - Simone Ummarino
- Harvard Medical School Initiative for RNA Medicine, Harvard Medical School, Boston, MA
| | - Yanzhou Zhang
- Harvard Medical School Initiative for RNA Medicine, Harvard Medical School, Boston, MA
| | - Alexander K Ebralidze
- Harvard Medical School Initiative for RNA Medicine, Harvard Medical School, Boston, MA
| | - Mahmoud A Bassal
- Harvard Stem Cell Institute, Harvard University, Boston, MA
- Cancer Science Institute of Singapore, National University of Singapore, Singapore
| | - Tuan M Nguyen
- Harvard Medical School Initiative for RNA Medicine, Harvard Medical School, Boston, MA
- Chemical Biology and Therapeutics Science, Broad Institute of MIT and Harvard, Cambridge, MA
| | - Gerwin Heller
- Division of Oncology, Department of Medicine I, Medical University of Vienna, Vienna, Austria
| | - Rory Coffey
- Harvard Medical School Initiative for RNA Medicine, Harvard Medical School, Boston, MA
| | - Danielle E Tenen
- Division of Endocrinology, Diabetes, and Metabolism, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA
| | - Emiel van der Kouwe
- Division of Hematology, Department of Medicine I, Medical University of Vienna, Vienna, Austria
| | - Emiliano Fabiani
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, Rome, Italy
- Saint Camillus International University of Health Sciences, Rome, Italy
| | - Carmelo Gurnari
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, Rome, Italy
| | - Chan-Shuo Wu
- Cancer Science Institute of Singapore, National University of Singapore, Singapore
| | | | - Henry Yang
- Cancer Science Institute of Singapore, National University of Singapore, Singapore
| | - Sisi Chen
- Harvard Medical School Initiative for RNA Medicine, Harvard Medical School, Boston, MA
| | - Hong Zhang
- Harvard Medical School Initiative for RNA Medicine, Harvard Medical School, Boston, MA
| | - Abby R Thurm
- Harvard Stem Cell Institute, Harvard University, Boston, MA
- Stanford University School of Medicine, Stanford, CA
| | - Francisco Marchi
- Harvard Stem Cell Institute, Harvard University, Boston, MA
- University of Florida, Gainesville, FL
| | - Elena Levantini
- Harvard Medical School Initiative for RNA Medicine, Harvard Medical School, Boston, MA
- Harvard Stem Cell Institute, Harvard University, Boston, MA
- Institute of Biomedical Technologies, National Research Council (CNR), Area della Ricerca di Pisa, Pisa, Italy
| | - Philipp B Staber
- Division of Hematology, Department of Medicine I, Medical University of Vienna, Vienna, Austria
| | - Pu Zhang
- Harvard Medical School Initiative for RNA Medicine, Harvard Medical School, Boston, MA
| | - Maria Teresa Voso
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, Rome, Italy
| | - Pier Paolo Pandolfi
- Department of Pathology, Beth Israel Deaconess Cancer Center, Harvard Medical School Boston, MA
| | - Susumu S Kobayashi
- Harvard Medical School Initiative for RNA Medicine, Harvard Medical School, Boston, MA
- Harvard Stem Cell Institute, Harvard University, Boston, MA
- Division of Translational Genomics, Exploratory Oncology Research and Clinical Trial Center, National Cancer Center, Kashiwa, Chiba, Japan
| | - Li Chai
- Harvard Stem Cell Institute, Harvard University, Boston, MA
- Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA
| | - Annalisa Di Ruscio
- Harvard Medical School Initiative for RNA Medicine, Harvard Medical School, Boston, MA
- Cancer Research Institute, Beth Israel Deaconess Medical Center, Boston, MA; and
- Department of Translational Medicine, University of Eastern Piedmont, Novara, Italy
| | - Daniel G Tenen
- Harvard Medical School Initiative for RNA Medicine, Harvard Medical School, Boston, MA
- Stanford University School of Medicine, Stanford, CA
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Abstract
PURPOSE OF REVIEW We review recent progress in the characterization of spiral ganglion neurons (SGNs), the afferent neurons that transmit sound information from mechanosensory hair cells in the inner ear to the central nervous system. RECENT FINDINGS Single-cell ribonucleic acid sequencing studies of murine SGNs have demonstrated that SGNs consist of molecularly distinct subtypes. The molecularly defined SGN subtypes likely correspond to SGN subtypes previously identified on the basis of physiological properties, although this has not been experimentally demonstrated. Subtype maturation is completed postnatally in an activity-dependent manner and is impaired in several models of hearing loss. SUMMARY The recent molecular studies open new avenues to rigorously test whether SGN subtypes are important for the encoding of different sound features and if they show differential vulnerability to genetic factors and environmental insults. This could have important implications for the development of therapeutic strategies to treat hearing loss.
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Affiliation(s)
- Shuohao Sun
- The Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
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29
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The cellular and molecular basis of somatosensory neuron development. Neuron 2021; 109:3736-3757. [PMID: 34592169 DOI: 10.1016/j.neuron.2021.09.004] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 08/23/2021] [Accepted: 09/01/2021] [Indexed: 11/23/2022]
Abstract
Primary somatosensory neurons convey salient information about our external environment and internal state to the CNS, allowing us to detect, perceive, and react to a wide range of innocuous and noxious stimuli. Pseudo-unipolar in shape, and among the largest (longest) cells of most mammals, dorsal root ganglia (DRG) somatosensory neurons have peripheral axons that extend into skin, muscle, viscera, or bone and central axons that innervate the spinal cord and brainstem, where they synaptically engage the central somatosensory circuitry. Here, we review the diversity of mammalian DRG neuron subtypes and the intrinsic and extrinsic mechanisms that control their development. We describe classical and contemporary advances that frame our understanding of DRG neurogenesis, transcriptional specification of DRG neurons, and the establishment of morphological, physiological, and synaptic diversification across somatosensory neuron subtypes.
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30
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Muzyka VV, Badea TC. Genetic interplay between transcription factor Pou4f1/Brn3a and neurotrophin receptor Ret in retinal ganglion cell type specification. Neural Dev 2021; 16:5. [PMID: 34548095 PMCID: PMC8454062 DOI: 10.1186/s13064-021-00155-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 08/05/2021] [Indexed: 12/15/2022] Open
Abstract
Background While the transcriptional code governing retinal ganglion cell (RGC) type specification begins to be understood, its interplay with neurotrophic signaling is largely unexplored. In mice, the transcription factor Brn3a/Pou4f1 is expressed in most RGCs, and is required for the specification of RGCs with small dendritic arbors. The Glial Derived Neurotrophic Factor (GDNF) receptor Ret is expressed in a subset of RGCs, including some expressing Brn3a, but its role in RGC development is not defined. Methods Here we use combinatorial genetic experiments using conditional knock-in reporter alleles at the Brn3a and Ret loci, in combination with retina- or Ret specific Cre drivers, to generate complete or mosaic genetic ablations of either Brn3a or Ret in RGCs. We then use sparse labelling to investigate Brn3a and Ret gene dosage effects on RGC dendritic arbor morphology. In addition, we use immunostaining and/or gene expression profiling by RNASeq to identify transcriptional targets relevant for the potential Brn3a-Ret interaction in RGC development. Results We find that mosaic gene dosage manipulation of the transcription factor Brn3a/Pou4f1 in neurotrophic receptor Ret heterozygote RGCs results in altered cell fate decisions and/or morphological dendritic defects. Specific RGC types are lost if Brn3a is ablated during embryogenesis and only mildly affected by postnatal Brn3a ablation. Sparse but not complete Brn3a heterozygosity combined with complete Ret heterozygosity has striking effects on RGC type distribution. Brn3a only mildly modulates Ret transcription, while Ret knockouts exhibit slightly skewed Brn3a and Brn3b expression during development that is corrected by adult age. Brn3a loss of function modestly but significantly affects distribution of Ret co-receptors GFRα1-3, and neurotrophin receptors TrkA and TrkC in RGCs. Conclusions Based on these observations, we propose that Brn3a and Ret converge onto developmental pathways that control RGC type specification, potentially through a competitive mechanism requiring signaling from the surrounding tissue. Supplementary Information The online version contains supplementary material available at 10.1186/s13064-021-00155-z.
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Affiliation(s)
- Vladimir Vladimirovich Muzyka
- Retinal Circuit Development & Genetics Unit, Neurobiology-Neurodegeneration & Repair Laboratory, National Eye Institute, NIH, Bethesda, MD, USA. .,Institute of Cytology and Genetics, Novosibirsk State University, Novosibirsk, Russia.
| | - Tudor Constantin Badea
- Retinal Circuit Development & Genetics Unit, Neurobiology-Neurodegeneration & Repair Laboratory, National Eye Institute, NIH, Bethesda, MD, USA. .,Research and Development Institute, School of Medicine, Transilvania University of Brasov, Brasov, Romania.
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31
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ERK Phosphorylation Regulates the Aml1/Runx1 Splice Variants and the TRP Channels Expression during the Differentiation of Glioma Stem Cell Lines. Cells 2021; 10:cells10082052. [PMID: 34440820 PMCID: PMC8391729 DOI: 10.3390/cells10082052] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 08/06/2021] [Accepted: 08/07/2021] [Indexed: 12/15/2022] Open
Abstract
The identification of cancer stem cells in brain tumors paved the way for new therapeutic approaches. Recently, a role for the transcriptional factor Runx1/Aml1 and the downstream ion channel genes in brain cancer development and progression has been suggested. This study aimed to explore the expression and the role of Runx1/Aml1, its Aml1b and Aml1c splice variants and the downstream TRPA1 and TRPV1 ion channels in undifferentiated and day-14 differentiated neural stem cells (NSCs and D-NSCs) and glioblastoma stem cells (GSCs and D-GSCs) lines with different proneural (PN) or mesenchymal (MES) phenotype. Gene and protein expression were evaluated by qRT-PCR, cytofluorimetric, western blot and confocal microscopy analyses. Moreover, by western blot, we observed that ERK phosphorylation enhances the Aml1b and Aml1c protein expression during glioma differentiation. Furthermore, the agonists of TRPA1 and TRPV1 channels stimulated apoptosis/necrosis in GSCs and D-GSCs as evaluated by Annexin V and PI staining and cytofluorimetric analysis. Finally, by qRT-PCR, the modulation of Wnt/β catenin, FGF, and TGFβ/SMAD signaling pathways in PN- and MES-GSCs was reported. Overall, our results provide new evidence regarding Runx1/Aml1 isoform overexpression and modulation in TRP channel expression during gliomagenesis, thus offering new directions for glioblastoma therapy.
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32
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Hass MR, Brissette D, Parameswaran S, Pujato M, Donmez O, Kottyan LC, Weirauch MT, Kopan R. Runx1 shapes the chromatin landscape via a cascade of direct and indirect targets. PLoS Genet 2021; 17:e1009574. [PMID: 34111109 PMCID: PMC8219162 DOI: 10.1371/journal.pgen.1009574] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 06/22/2021] [Accepted: 05/03/2021] [Indexed: 11/18/2022] Open
Abstract
Runt-related transcription factor 1 (Runx1) can act as both an activator and a repressor. Here we show that CRISPR-mediated deletion of Runx1 in mouse metanephric mesenchyme-derived mK4 cells results in large-scale genome-wide changes to chromatin accessibility and gene expression. Open chromatin regions near down-regulated loci enriched for Runx sites in mK4 cells lose chromatin accessibility in Runx1 knockout cells, despite remaining Runx2-bound. Unexpectedly, regions near upregulated genes are depleted of Runx sites and are instead enriched for Zeb transcription factor binding sites. Re-expressing Zeb2 in Runx1 knockout cells restores suppression, and CRISPR mediated deletion of Zeb1 and Zeb2 phenocopies the gained expression and chromatin accessibility changes seen in Runx1KO due in part to subsequent activation of factors like Grhl2. These data confirm that Runx1 activity is uniquely needed to maintain open chromatin at many loci, and demonstrate that Zeb proteins are required and sufficient to maintain Runx1-dependent genome-scale repression. Runt-related transcription factor (Runx) 1 & 2 impact development and disease by activating or repressing transcription. In this manuscript we used genome editing tools to remove Runx1, and as expected, observed widespread changes in chromatin accessibility. Newly closed areas contained Runx1 binding sites and were enriched near genes whose expression depended on Runx1. Interestingly, this occurred despite continued binding of Runx2 to the same regions of DNA, which suggests that Runx2 is insufficient to maintain open chromatin and expression of Runx1 target genes in this cellular context. By contrast, newly opened chromatin regions, many near genes that were upregulated in Runx1 knockout cells, did not enrich for Runx1 binding sites. Instead, these regions were enriched for sites for the repressor Zeb proteins. We found that the loss of Zeb 1 & 2 expression, direct transcriptional targets of Runx1, resulted in the opening of chromatin and upregulation of genes residing near the newly open sites in Runx1 knockout cells. The same sites were also open and nearby genes expressed in edited Zeb1 and Zeb2 knockout cells. Among them were transcription factors, such as the Grhl2 gene, which in turn bind to and upregulate their target genes. Thus, the loss of a single transcription factor initiates a cascade of direct and indirect ramifications with likely negative effects on development and health.
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Affiliation(s)
- Matthew R. Hass
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, United States of America
- Division of Developmental Biology, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
| | - Daniel Brissette
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, United States of America
- Division of Developmental Biology, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
| | - Sreeja Parameswaran
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, United States of America
- Center for Autoimmune Genomics and Etiology, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
| | - Mario Pujato
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, United States of America
- Center for Autoimmune Genomics and Etiology, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
| | - Omer Donmez
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, United States of America
- Center for Autoimmune Genomics and Etiology, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
| | - Leah C. Kottyan
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, United States of America
- Division of Developmental Biology, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
- Center for Autoimmune Genomics and Etiology, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
| | - Matthew T. Weirauch
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, United States of America
- Division of Developmental Biology, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
- Center for Autoimmune Genomics and Etiology, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
- Division of Biomedical Informatics, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
- * E-mail: (MTW); (RK)
| | - Raphael Kopan
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, United States of America
- Division of Developmental Biology, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
- * E-mail: (MTW); (RK)
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Gonzales F, Barthélémy A, Peyrouze P, Fenwarth L, Preudhomme C, Duployez N, Cheok MH. Targeting RUNX1 in acute myeloid leukemia: preclinical innovations and therapeutic implications. Expert Opin Ther Targets 2021; 25:299-309. [PMID: 33906574 DOI: 10.1080/14728222.2021.1915991] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Introduction: RUNX1 is an essential transcription factor for normal and malignant hematopoiesis. RUNX1 forms a heterodimeric complex with CBFB. Germline mutations and somatic alterations (i.e. translocations, mutations and abnormal expression) are frequently associated with acute myeloid leukemia (AML) with RUNX1 mutations conferring unfavorable prognosis. Therefore, RUNX1 constitutes a potential innovative and interesting therapeutic target. In this review, we discuss recent therapeutic advances of RUNX1 targeting in AML.Areas covered: Firstly, we cover the clinical basis for RUNX1 targeting. We have subdivided recent therapeutic approaches either by common biochemical pathways or by similar pharmacological targets. Genome editing of RUNX1 induces anti-leukemic effects; however, off-target events prohibit clinical use. Several molecules inhibit the interaction between RUNX1/CBFB and control AML development and progression. BET protein antagonists target RUNX1 (i.e. specific BET inhibitors, BRD4 shRNRA, proteolysis targeting chimeras (PROTAC) or expression-mimickers). All these molecules improve survival in mutant RUNX1 AML preclinical models.Expert opinion: Some of these novel molecules have shown encouraging anti-leukemic potency at the preclinical stage. A better understanding of RUNX1 function in AML development and progression and its key downstream pathways, may result in more precise and more efficient RUNX1 targeting therapies.
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Affiliation(s)
- Fanny Gonzales
- Factors of Leukemic cell Persistence, Univ. Lille, CNRS, Inserm, CHU Lille, IRCL, Canther, Lille, France.,Pediatric Hematology Department, University Hospital of Lille, Lille, France
| | - Adeline Barthélémy
- Factors of Leukemic cell Persistence, Univ. Lille, CNRS, Inserm, CHU Lille, IRCL, Canther, Lille, France
| | - Pauline Peyrouze
- Factors of Leukemic cell Persistence, Univ. Lille, CNRS, Inserm, CHU Lille, IRCL, Canther, Lille, France
| | - Laurène Fenwarth
- Factors of Leukemic cell Persistence, Univ. Lille, CNRS, Inserm, CHU Lille, IRCL, Canther, Lille, France.,Laboratory of Hematology, CHU Lille, Lille, France
| | - Claude Preudhomme
- Factors of Leukemic cell Persistence, Univ. Lille, CNRS, Inserm, CHU Lille, IRCL, Canther, Lille, France.,Laboratory of Hematology, CHU Lille, Lille, France
| | - Nicolas Duployez
- Factors of Leukemic cell Persistence, Univ. Lille, CNRS, Inserm, CHU Lille, IRCL, Canther, Lille, France.,Laboratory of Hematology, CHU Lille, Lille, France
| | - Meyling H Cheok
- Factors of Leukemic cell Persistence, Univ. Lille, CNRS, Inserm, CHU Lille, IRCL, Canther, Lille, France
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He X, Liu P, Zhang X, Jiang Z, Gu N, Wang Q, Lu Y. Molecular and Electrophysiological Characterization of Dorsal Horn Neurons in a GlyT2-iCre-tdTomato Mouse Line. J Pain Res 2021; 14:907-921. [PMID: 33854367 PMCID: PMC8039200 DOI: 10.2147/jpr.s296940] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 03/13/2021] [Indexed: 12/18/2022] Open
Abstract
Purpose Spinal glycinergic neurons function as critical elements of a spinal gate for pain and itch. We have recently documented that spinal PKCγ+ neurons receive the feedforward inhibitory input driven by Aβ primary afferent. The glycinergic neurons control the excitability of PKCγ+ neurons and therefore gate mechanical allodynia. However, a dynamic or electrophysiological analysis of the synaptic drive on spinal glycinergic interneurons from primary afferent fibers is largely absent. The present study was aimed to analyze the synaptic dynamics between spinal glycinergic interneurons and primary afferents using a genetic labeled animal model. Materials and Methods The GlyT2-P2A-iCre mice were constructed by the CRISPR/Cas9 technology. The GlyT2-iCre-tdTomato mice were then generated by crossing the GlyT2-P2A-iCre mice with fluorescent reporter mice. Patch-clamp whole-cell recordings were used to analyze the dynamic synaptic inputs to glycinergic neurons in GlyT2-iCre-tdTomato mice. The distribution of GlyT2-tdTomato neurons in the spinal dorsal horn was examined by the immunohistochemistry method. The firing pattern and morphological features of GlyT2-tdTomato neurons were also examined by electrophysiological recordings and intracellular injection of biocitin. Results The GlyT2-P2A-iCre and GlyT2-tdTomato mice were successfully constructed. GlyT2-tdTomato fluorescence was colocalized extensively with immunoreactivity of glycine, GlyT2 and Pax2 in somata, confirming the selective expression of the transgene in glycinergic neurons. GlyT2-tdTomato neurons were mainly distributed in spinal lamina IIi through IV. The firing pattern and morphological properties of GlyT2-tdTomato neurons met the features of tonic central or islet type of spinal inhibitory interneurons. The majority (72.1%) of the recorded GlyT2-tdTomato neurons received primary inputs from Aβ fibers. Conclusion The present study indicated that spinal GlyT2-positive glycinergic neurons mainly received primary afferent Aβ fiber inputs; the GlyT2-P2A-iCre and GlyT2-tdTomato mice provided a useful animal model to further investigate the function of the GlyT2+-PKCγ+ feedforward inhibitory circuit in both physiological and pathological conditions.
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Affiliation(s)
- Xiaolan He
- Department of Pain Medicine.,Department of Anesthesiology & Perioperative Medicine, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, People's Republic of China
| | - Peng Liu
- Department of Pain Medicine.,Department of Anesthesiology & Perioperative Medicine, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, People's Republic of China
| | - Xiao Zhang
- Department of Pain Medicine.,Department of Anesthesiology & Perioperative Medicine, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, People's Republic of China
| | - Zhenhua Jiang
- Department of Pain Medicine.,Department of Anesthesiology & Perioperative Medicine, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, People's Republic of China
| | - Nan Gu
- Department of Pain Medicine.,Department of Anesthesiology & Perioperative Medicine, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, People's Republic of China
| | - Qun Wang
- Department of Pain Medicine.,Department of Anesthesiology & Perioperative Medicine, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, People's Republic of China
| | - Yan Lu
- Department of Pain Medicine.,Department of Anesthesiology & Perioperative Medicine, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, People's Republic of China
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Ikegami R, Eshima H, Nakajima T, Toyoda S, Poole DC, Kano Y. Type I diabetes suppresses intracellular calcium ion increase normally evoked by heat stress in rat skeletal muscle. Am J Physiol Regul Integr Comp Physiol 2021; 320:R384-R392. [PMID: 33407019 DOI: 10.1152/ajpregu.00168.2020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Accepted: 12/24/2020] [Indexed: 12/13/2022]
Abstract
Heat stress, via its effects on muscle intracellular Ca2+ concentrations ([Ca2+]i), has been invoked as a putative therapeutic countermeasure to type 1 diabetes-induced muscle atrophy. Using a circulation- and neurally intact in vivo muscle preparation, we tested the hypothesis that impaired muscle Ca2+ homeostasis in type 1 diabetic rats is due to attenuated heat stress tolerance mediated via transient receptor potential vanilloid 1 (TRPV1). Male Wistar rats were randomly assigned to one of the following four groups: 1) healthy control 30°C (CONT 30°C); 2) CONT 40°C; 3) diabetes 30°C (DIA 30°C); and 4) DIA 40°C. The temperature of 40°C was selected because it exceeds the TRPV1 activation threshold. Spinotrapezius muscles of Wistar rats were exteriorized in vivo and loaded with the fluorescent Ca2+ probe Fura-2 AM. [Ca2+]i was estimated over 20 min using fluorescence microscopy (340/380 nm ratio) in quiescent muscle held at the required temperature, using a calibrated heat source applied to the ventral muscle surface. Western blotting was performed to determine the protein expression levels of TRPV1 in spinotrapezius muscle. After 20 min of heat stress, the CONT 40°C condition induced a 12.3 ± 5% [Ca2+]i (P < 0.05) elevation that was markedly absent in the DIA 40°C or other conditions. Thus, no significant differences were found among DIA 40°C, DIA 30°C, and CONT 30°C. TRPV1 protein expression was decreased by 42.0 ± 9% in DIA compared with CONT (P < 0.05) and, unlike CONT, heat stress did not increase TRPV1 phosphorylation. In conclusion, diabetes suppresses TRPV1 protein expression and function and inhibits the elevated myocyte [Ca2+]i evoked normally by heat stress. These results suggest that capsaicin or other therapeutic strategies to increase Ca2+ accumulation via TRPV1 might be more effective than hyperthermic therapy for type 1 diabetic patients.
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Affiliation(s)
- Ryo Ikegami
- Department of Engineering Science, University of Electro-Communications, Chofu, Japan
- Department of Health Science, Health Science University, Yamanashi, Japan
| | - Hiroaki Eshima
- Department of Engineering Science, University of Electro-Communications, Chofu, Japan
- Diabetes & Metabolism Research Center, University of Utah, Salt Lake City, Utah
| | - Toshiaki Nakajima
- Department of Cardiovascular Medicine, Dokkyo Medical University and Heart Center, Dokkyo Medical University Hospital, Tochigi, Japan
| | - Shigeru Toyoda
- Department of Cardiovascular Medicine, Dokkyo Medical University and Heart Center, Dokkyo Medical University Hospital, Tochigi, Japan
| | - David C Poole
- Departments of Anatomy, Physiology and Kinesiology, Kansas State University, Manhattan, Kansas
| | - Yutaka Kano
- Department of Engineering Science, University of Electro-Communications, Chofu, Japan
- Center for Neuroscience and Biomedical Engineering, University of Electro-Communications, Chofu, Japan
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36
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Wang D, Lu J, Xu X, Yuan Y, Zhang Y, Xu J, Chen H, Liu J, Shen Y, Zhang H. Satellite Glial Cells Give Rise to Nociceptive Sensory Neurons. Stem Cell Rev Rep 2021; 17:999-1013. [PMID: 33389681 DOI: 10.1007/s12015-020-10102-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/01/2020] [Indexed: 12/27/2022]
Abstract
Dorsal root ganglia (DRG) sensory neurons can transmit information about noxious stimulus to cerebral cortex via spinal cord, and play an important role in the pain pathway. Alterations of the pain pathway lead to CIPA (congenital insensitivity to pain with anhidrosis) or chronic pain. Accumulating evidence demonstrates that nerve damage leads to the regeneration of neurons in DRG, which may contribute to pain modulation in feedback. Therefore, exploring the regeneration process of DRG neurons would provide a new understanding to the persistent pathological stimulation and contribute to reshape the somatosensory function. It has been reported that a subpopulation of satellite glial cells (SGCs) express Nestin and p75, and could differentiate into glial cells and neurons, suggesting that SGCs may have differentiation plasticity. Our results in the present study show that DRG-derived SGCs (DRG-SGCs) highly express neural crest cell markers Nestin, Sox2, Sox10, and p75, and differentiate into nociceptive sensory neurons in the presence of histone deacetylase inhibitor VPA, Wnt pathway activator CHIR99021, Notch pathway inhibitor RO4929097, and FGF pathway inhibitor SU5402. The nociceptive sensory neurons express multiple functionally-related genes (SCN9A, SCN10A, SP, Trpv1, and TrpA1) and are able to generate action potentials and voltage-gated Na+ currents. Moreover, we found that these cells exhibited rapid calcium transients in response to capsaicin through binding to the Trpv1 vanilloid receptor, confirming that the DRG-SGC-derived cells are nociceptive sensory neurons. Further, we show that Wnt signaling promotes the differentiation of DRG-SGCs into nociceptive sensory neurons by regulating the expression of specific transcription factor Runx1, while Notch and FGF signaling pathways are involved in the expression of SCN9A. These results demonstrate that DRG-SGCs have stem cell characteristics and can efficiently differentiate into functional nociceptive sensory neurons, shedding light on the clinical treatment of sensory neuron-related diseases.
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Affiliation(s)
- Dongyan Wang
- Department of Cell Biology, Medical College of Soochow University, Suzhou, 215123, China
| | - Junhou Lu
- Department of Cell Biology, Medical College of Soochow University, Suzhou, 215123, China
| | - Xiaojing Xu
- Department of Cell Biology, Medical College of Soochow University, Suzhou, 215123, China
| | - Ye Yuan
- Department of Cell Biology, Medical College of Soochow University, Suzhou, 215123, China
| | - Yu Zhang
- Department of Orthopedics, The Second Affiliated Hospital of Soochow University, Suzhou, 215006, China
| | - Jianwei Xu
- National Guizhou Joint Engineering Laboratory for Cell Engineering and Biomedicine Technique, Center for Tissue Engineering and Stem Cell Research, Guizhou Province Key Laboratory of Regenerative Medicine, Guizhou Medical University, Guiyang, 550004, China
| | - Huanhuan Chen
- Department of Cell Biology, Medical College of Soochow University, Suzhou, 215123, China
| | - Jinming Liu
- Department of Cell Biology, Medical College of Soochow University, Suzhou, 215123, China
| | - Yixin Shen
- Department of Orthopedics, The Second Affiliated Hospital of Soochow University, Suzhou, 215006, China.
| | - Huanxiang Zhang
- Department of Cell Biology, Medical College of Soochow University, Suzhou, 215123, China.
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Abstract
Primary nociceptors are a heterogeneous class of peripheral somatosensory neurons, responsible for detecting noxious, pruriceptive, and thermal stimuli. These neurons are further divided into several molecularly defined subtypes that correlate with their functional sensory modalities and morphological features. During development, all nociceptors arise from a common pool of embryonic precursors, and then segregate progressively into their mature specialized phenotypes. In this review, we summarize the intrinsic transcriptional programs and extrinsic trophic factor signaling mechanisms that interact to control nociceptor diversification. We also discuss how recent transcriptome profiling studies have significantly advanced the field of sensory neuron development.
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Affiliation(s)
- Suna L Cranfill
- Department of Neuroscience, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Wenqin Luo
- Department of Neuroscience, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States.
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38
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Kim DJ, Khoury-Hanold W, Jain PC, Klein J, Kong Y, Pope SD, Ge W, Medzhitov R, Iwasaki A. RUNX Binding Sites Are Enriched in Herpesvirus Genomes, and RUNX1 Overexpression Leads to Herpes Simplex Virus 1 Suppression. J Virol 2020; 94:e00943-20. [PMID: 32878886 PMCID: PMC7592204 DOI: 10.1128/jvi.00943-20] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Accepted: 08/24/2020] [Indexed: 12/21/2022] Open
Abstract
Herpes simplex virus 1 (HSV-1) and HSV-2 can efficiently establish lifelong, transcriptionally silent latency states in sensory neurons to escape host detection. While host factors have previously been associated with long-range insulators in the viral genome, it is still unknown whether host transcription factors can repress viral genes more proximately to promote latency in dorsal root ganglion (DRG) neurons. Here, we assessed whether RUNX (runt-related transcription factor) transcription factors, which are critical in the development of sensory neurons, could be binding HSV-1 genome directly to suppress viral gene expression and lytic infection. Using previously published transcriptome sequencing data, we confirmed that mouse DRG neurons highly express Runx1 mRNA. Through computational analysis of HSV-1 and HSV-2 genomes, we observed that putative RUNX consensus binding sites (CBSs) were more enriched and more closely located to viral gene transcription start sites than would be expected by chance. We further found that RUNX CBSs were significantly more enriched among genomes of herpesviruses compared to those of nonherpesviruses. Utilizing an in vitro model of HSV-1 infection, we found that overexpressed RUNX1 could bind putative binding sites in the HSV-1 genome, repress numerous viral genes spanning all three kinetic classes, and suppress productive infection. In contrast, knockdown of RUNX1 in neuroblastoma cells induced viral gene expression and increased HSV-1 infection in vitro In sum, these data support a novel role for RUNX1 in directly binding herpesvirus genome, silencing the transcription of numerous viral genes, and ultimately limiting overall infection.IMPORTANCE Infecting 90% of the global population, HSV-1 and HSV-2 represent some of the most prevalent viruses in the world. Much of their success can be attributed to their ability to establish lifelong latent infections in the dorsal root ganglia (DRG). It is still largely unknown, however, how host transcription factors are involved in establishing this latency. Here, we report that RUNX1, expressed highly in DRG, binds HSV-1 genome, represses transcription of numerous viral genes, and suppresses productive in vitro infection. Our computational work further suggests this strategy may be used by other herpesviruses to reinforce latency in a cell-specific manner.
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Affiliation(s)
- Daniel J Kim
- Department of Immunobiology, Yale University School of Medicine, New Haven, Connecticut, USA
| | - William Khoury-Hanold
- Department of Immunobiology, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Priyanka Caroline Jain
- Department of Immunobiology, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Jonathan Klein
- Department of Immunobiology, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Yong Kong
- Department of Immunobiology, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Scott D Pope
- Department of Immunobiology, Yale University School of Medicine, New Haven, Connecticut, USA
| | - William Ge
- Department of Immunobiology, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Ruslan Medzhitov
- Department of Immunobiology, Yale University School of Medicine, New Haven, Connecticut, USA
- Howard Hughes Medical Institute, Chevy Chase, Maryland, USA
| | - Akiko Iwasaki
- Department of Immunobiology, Yale University School of Medicine, New Haven, Connecticut, USA
- Howard Hughes Medical Institute, Chevy Chase, Maryland, USA
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Vermeiren S, Bellefroid EJ, Desiderio S. Vertebrate Sensory Ganglia: Common and Divergent Features of the Transcriptional Programs Generating Their Functional Specialization. Front Cell Dev Biol 2020; 8:587699. [PMID: 33195244 PMCID: PMC7649826 DOI: 10.3389/fcell.2020.587699] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Accepted: 09/08/2020] [Indexed: 12/13/2022] Open
Abstract
Sensory fibers of the peripheral nervous system carry sensation from specific sense structures or use different tissues and organs as receptive fields, and convey this information to the central nervous system. In the head of vertebrates, each cranial sensory ganglia and associated nerves perform specific functions. Sensory ganglia are composed of different types of specialized neurons in which two broad categories can be distinguished, somatosensory neurons relaying all sensations that are felt and visceral sensory neurons sensing the internal milieu and controlling body homeostasis. While in the trunk somatosensory neurons composing the dorsal root ganglia are derived exclusively from neural crest cells, somato- and visceral sensory neurons of cranial sensory ganglia have a dual origin, with contributions from both neural crest and placodes. As most studies on sensory neurogenesis have focused on dorsal root ganglia, our understanding of the molecular mechanisms underlying the embryonic development of the different cranial sensory ganglia remains today rudimentary. However, using single-cell RNA sequencing, recent studies have made significant advances in the characterization of the neuronal diversity of most sensory ganglia. Here we summarize the general anatomy, function and neuronal diversity of cranial sensory ganglia. We then provide an overview of our current knowledge of the transcriptional networks controlling neurogenesis and neuronal diversification in the developing sensory system, focusing on cranial sensory ganglia, highlighting specific aspects of their development and comparing it to that of trunk sensory ganglia.
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Affiliation(s)
- Simon Vermeiren
- ULB Neuroscience Institute, Université Libre de Bruxelles, Gosselies, Belgium
| | - Eric J Bellefroid
- ULB Neuroscience Institute, Université Libre de Bruxelles, Gosselies, Belgium
| | - Simon Desiderio
- Institute for Neurosciences of Montpellier, INSERM U1051, University of Montpellier, Montpellier, France
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40
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Ventéo S, Desiderio S, Cabochette P, Deslys A, Carroll P, Pattyn A. Neurog2 Deficiency Uncovers a Critical Period of Cell Fate Plasticity and Vulnerability among Neural-Crest-Derived Somatosensory Progenitors. Cell Rep 2020; 29:2953-2960.e2. [PMID: 31801063 DOI: 10.1016/j.celrep.2019.11.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Revised: 09/18/2019] [Accepted: 10/30/2019] [Indexed: 01/27/2023] Open
Abstract
Functionally distinct classes of dorsal root ganglia (DRG) somatosensory neurons arise from neural crest cells (NCCs) in two successive phases of differentiation assumed to be respectively and independently controlled by the proneural genes Neurog2 and Neurog1. However, the precise role of Neurog2 during this process remains unclear, notably because no neuronal loss has been reported hitherto in Neurog2-/- mutants. Here, we show that at trunk levels, Neurog2 deficiency impairs the production of subsets of all DRG neuron subtypes. We establish that this phenotype is highly dynamic and reflects multiple defects in NCC-derived progenitors, including somatosensory-to-melanocyte fate switch, apoptosis, and delayed differentiation which alters neuronal identity, all occurring during a narrow time window when Neurog2 temporarily controls onset of Neurog1 expression and neurogenesis. Collectively, these findings uncover a critical period of cell fate plasticity and vulnerability among somatosensory progenitors and establish that Neurog2 function in the developing DRG is broader than initially envisaged.
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Affiliation(s)
- Stéphanie Ventéo
- Institute for Neurosciences of Montpellier, University of Montpellier, INSERM U1051, 80 rue Augustin Fliche, 34091 Montpellier, France
| | - Simon Desiderio
- Institute for Neurosciences of Montpellier, University of Montpellier, INSERM U1051, 80 rue Augustin Fliche, 34091 Montpellier, France
| | - Pauline Cabochette
- Institute for Neurosciences of Montpellier, University of Montpellier, INSERM U1051, 80 rue Augustin Fliche, 34091 Montpellier, France
| | - Alexandre Deslys
- Institute for Neurosciences of Montpellier, University of Montpellier, INSERM U1051, 80 rue Augustin Fliche, 34091 Montpellier, France
| | - Patrick Carroll
- Institute for Neurosciences of Montpellier, University of Montpellier, INSERM U1051, 80 rue Augustin Fliche, 34091 Montpellier, France
| | - Alexandre Pattyn
- Institute for Neurosciences of Montpellier, University of Montpellier, INSERM U1051, 80 rue Augustin Fliche, 34091 Montpellier, France.
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41
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Machine-learned analysis of the association of next-generation sequencing-based genotypes with persistent pain after breast cancer surgery. Pain 2020; 160:2263-2277. [PMID: 31107411 DOI: 10.1097/j.pain.0000000000001616] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Cancer and its surgical treatment are among the most important triggering events for persistent pain, but additional factors need to be present for the clinical manifestation, such as variants in pain-relevant genes. In a cohort of 140 women undergoing breast cancer surgery, assigned based on a 3-year follow-up to either a persistent or nonpersistent pain phenotype, next-generation sequencing was performed for 77 genes selected for known functional involvement in persistent pain. Applying machine-learning and item categorization techniques, 21 variants in 13 different genes were found to be relevant to the assignment of a patient to either the persistent pain or the nonpersistent pain phenotype group. In descending order of importance for correct group assignment, the relevant genes comprised DRD1, FAAH, GCH1, GPR132, OPRM1, DRD3, RELN, GABRA5, NF1, COMT, TRPA1, ABHD6, and DRD4, of which one in the DRD4 gene was a novel discovery. Particularly relevant variants were found in the DRD1 and GPR132 genes, or in a cis-eCTL position of the OPRM1 gene. Supervised machine-learning-based classifiers, trained with 2/3 of the data, identified the correct pain phenotype group in the remaining 1/3 of the patients at accuracies and areas under the receiver operator characteristic curves of 65% to 72%. When using conservative classical statistical approaches, none of the variants passed α-corrected testing. The present data analysis approach, using machine learning and training artificial intelligences, provided biologically plausible results and outperformed classical approaches to genotype-phenotype association.
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Tang J, Xie J, Chen W, Tang C, Wu J, Wang Y, Zhou XD, Zhou HD, Li YP. Runt-related transcription factor 1 is required for murine osteoblast differentiation and bone formation. J Biol Chem 2020; 295:11669-11681. [PMID: 32571873 PMCID: PMC7450143 DOI: 10.1074/jbc.ra119.007896] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Revised: 04/16/2020] [Indexed: 12/12/2022] Open
Abstract
Despite years of research investigating osteoblast differentiation, the mechanisms by which transcription factors regulate osteoblast maturation, bone formation, and bone homeostasis is still unclear. It has been reported that runt-related transcription factor 1 (Runx1) is expressed in osteoblast progenitors, pre-osteoblasts, and mature osteoblasts; yet, surprisingly, the exact function of RUNX1 in osteoblast maturation and bone formation remains unknown. Here, we generated and characterized a pre-osteoblast and differentiating chondrocyte-specific Runx1 conditional knockout mouse model to study RUNX1's function in bone formation. Runx1 ablation in osteoblast precursors and differentiating chondrocytes via osterix-Cre (Osx-Cre) resulted in an osteoporotic phenotype and decreased bone density in the long bones and skulls of Runx1f/fOsx-Cre mice compared with Runx1f/f and Osx-Cre mice. RUNX1 deficiency reduced the expression of SRY-box transcription factor 9 (SOX9), Indian hedgehog signaling molecule (IHH), Patched (PTC), and cyclin D1 in the growth plate, and also reduced the expression of osteocalcin (OCN), OSX, activating transcription factor 4 (ATF4), and RUNX2 in osteoblasts. ChIP assays and promoter activity mapping revealed that RUNX1 directly associates with the Runx2 gene promoter and up-regulates Runx2 expression. Furthermore, the ChIP data also showed that RUNX1 associates with the Ocn promoter. In conclusion, RUNX1 up-regulates the expression of Runx2 and multiple bone-specific genes, and plays an indispensable role in bone formation and homeostasis in both trabecular and cortical bone. We propose that stimulating Runx1 activity may be useful in therapeutic approaches for managing some bone diseases such as osteoporosis.
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Affiliation(s)
- Jun Tang
- Department of Metabolism & Endocrinology, Hunan Provincial Key Laboratory of Metabolic Bone Diseases, National Clinical Research Center for Metabolic Diseases, The Second Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China
- Department of Pathology, the University of Alabama at Birmingham School of Medicine, Birmingham, Alabama, USA
| | - Jing Xie
- Department of Pathology, the University of Alabama at Birmingham School of Medicine, Birmingham, Alabama, USA
- The State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, Sichuan, People's Republic of China
| | - Wei Chen
- Department of Pathology, the University of Alabama at Birmingham School of Medicine, Birmingham, Alabama, USA
| | - Chenyi Tang
- Department of Pathology, the University of Alabama at Birmingham School of Medicine, Birmingham, Alabama, USA
| | - Jinjin Wu
- Department of Pathology, the University of Alabama at Birmingham School of Medicine, Birmingham, Alabama, USA
| | - Yiping Wang
- Department of Pathology, the University of Alabama at Birmingham School of Medicine, Birmingham, Alabama, USA
| | - Xue-Dong Zhou
- The State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, Sichuan, People's Republic of China
| | - Hou-De Zhou
- Department of Metabolism & Endocrinology, Hunan Provincial Key Laboratory of Metabolic Bone Diseases, National Clinical Research Center for Metabolic Diseases, The Second Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China
| | - Yi-Ping Li
- Department of Pathology, the University of Alabama at Birmingham School of Medicine, Birmingham, Alabama, USA
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Li Y, Guo X, Sun L, Xiao J, Su S, Du S, Li Z, Wu S, Liu W, Mo K, Xia S, Chang Y, Denis D, Tao Y. N 6-Methyladenosine Demethylase FTO Contributes to Neuropathic Pain by Stabilizing G9a Expression in Primary Sensory Neurons. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2020; 7:1902402. [PMID: 32670741 PMCID: PMC7341103 DOI: 10.1002/advs.201902402] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 02/27/2020] [Indexed: 05/23/2023]
Abstract
Nerve injury-induced change in gene expression in primary sensory neurons of dorsal root ganglion (DRG) is critical for neuropathic pain genesis. N6-methyladenosine (m6A) modification of RNA represents an additional layer of gene regulation. Here, it is reported that peripheral nerve injury increases the expression of the m6A demethylase fat-mass and obesity-associated proteins (FTO) in the injured DRG via the activation of Runx1, a transcription factor that binds to the Fto gene promoter. Mimicking this increase erases m6A in euchromatic histone lysine methyltransferase 2 (Ehmt2) mRNA (encoding the histone methyltransferase G9a) and elevates the level of G9a in DRG and leads to neuropathic pain symptoms. Conversely, blocking this increase reverses a loss of m6A sites in Ehmt2 mRNA and destabilizes the nerve injury-induced G9a upregulation in the injured DRG and alleviates nerve injury-associated pain hypersensitivities. FTO contributes to neuropathic pain likely through stabilizing nerve injury-induced upregulation of G9a, a neuropathic pain initiator, in primary sensory neurons.
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Affiliation(s)
- Yize Li
- Department of AnesthesiologyNew Jersey Medical School, RutgersThe State University of New Jersey185 S. Orange Ave., MSB E594NewarkNJ07103USA
| | - Xinying Guo
- Department of AnesthesiologyNew Jersey Medical School, RutgersThe State University of New Jersey185 S. Orange Ave., MSB E594NewarkNJ07103USA
| | - Linlin Sun
- Department of AnesthesiologyNew Jersey Medical School, RutgersThe State University of New Jersey185 S. Orange Ave., MSB E594NewarkNJ07103USA
| | - Jifang Xiao
- Department of AnesthesiologyNew Jersey Medical School, RutgersThe State University of New Jersey185 S. Orange Ave., MSB E594NewarkNJ07103USA
| | - Songxue Su
- Department of Physiology, Pharmacology & NeuroscienceNew Jersey Medical School, RutgersThe State University of New Jersey185 S. Orange Ave., MSB E661NewarkNJ07103USA
| | - Shibin Du
- Department of AnesthesiologyNew Jersey Medical School, RutgersThe State University of New Jersey185 S. Orange Ave., MSB E594NewarkNJ07103USA
| | - Zhen Li
- Department of AnesthesiologyNew Jersey Medical School, RutgersThe State University of New Jersey185 S. Orange Ave., MSB E594NewarkNJ07103USA
| | - Shaogen Wu
- Department of AnesthesiologyNew Jersey Medical School, RutgersThe State University of New Jersey185 S. Orange Ave., MSB E594NewarkNJ07103USA
| | - Weili Liu
- Department of AnesthesiologyNew Jersey Medical School, RutgersThe State University of New Jersey185 S. Orange Ave., MSB E594NewarkNJ07103USA
| | - Kai Mo
- Department of AnesthesiologyNew Jersey Medical School, RutgersThe State University of New Jersey185 S. Orange Ave., MSB E594NewarkNJ07103USA
| | - Shangzhou Xia
- Department of AnesthesiologyNew Jersey Medical School, RutgersThe State University of New Jersey185 S. Orange Ave., MSB E594NewarkNJ07103USA
| | - Yun‐Juan Chang
- The Office of Advanced Research ComputingRutgers, The State University of New Jersey 185 S. Orange Ave., MSB C‐630NewarkNJ07103USA
| | - Daniel Denis
- Department of AnesthesiologyNew Jersey Medical School, RutgersThe State University of New Jersey185 S. Orange Ave., MSB E594NewarkNJ07103USA
| | - Yuan‐Xiang Tao
- Department of AnesthesiologyNew Jersey Medical School, RutgersThe State University of New Jersey185 S. Orange Ave., MSB E594NewarkNJ07103USA
- Department of Physiology, Pharmacology & NeuroscienceNew Jersey Medical School, RutgersThe State University of New Jersey185 S. Orange Ave., MSB E661NewarkNJ07103USA
- Department of Cell Biology & Molecular MedicineNew Jersey Medical School, RutgersThe State University of New Jersey185 S. Orange Ave., MSB E661NewarkNJ07103USA
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Selected Ionotropic Receptors and Voltage-Gated Ion Channels: More Functional Competence for Human Induced Pluripotent Stem Cell (iPSC)-Derived Nociceptors. Brain Sci 2020; 10:brainsci10060344. [PMID: 32503260 PMCID: PMC7348931 DOI: 10.3390/brainsci10060344] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 05/28/2020] [Accepted: 05/30/2020] [Indexed: 01/09/2023] Open
Abstract
Preclinical research using different rodent model systems has largely contributed to the scientific progress in the pain field, however, it suffers from interspecies differences, limited access to human models, and ethical concerns. Human induced pluripotent stem cells (iPSCs) offer major advantages over animal models, i.e., they retain the genome of the donor (patient), and thus allow donor-specific and cell-type specific research. Consequently, human iPSC-derived nociceptors (iDNs) offer intriguingly new possibilities for patient-specific, animal-free research. In the present study, we characterized iDNs based on the expression of well described nociceptive markers and ion channels, and we conducted a side-by-side comparison of iDNs with mouse sensory neurons. Specifically, immunofluorescence (IF) analyses with selected markers including early somatosensory transcription factors (BRN3A/ISL1/RUNX1), the low-affinity nerve growth factor receptor (p75), hyperpolarization-activated cyclic nucleotide-gated channels (HCN), as well as high voltage-gated calcium channels (VGCC) of the CaV2 type, calcium permeable TRPV1 channels, and ionotropic GABAA receptors, were used to address the characteristics of the iDN phenotype. We further combined IF analyses with microfluorimetric Ca2+ measurements to address the functionality of these ion channels in iDNs. Thus, we provide a detailed morphological and functional characterization of iDNs, thereby, underpinning their enormous potential as an animal-free alternative for human specific research in the pain field for unveiling pathophysiological mechanisms and for unbiased, disease-specific personalized drug development.
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Antiallodynic effects of the selective NaV1.7 inhibitor Pn3a in a mouse model of acute postsurgical pain: evidence for analgesic synergy with opioids and baclofen. Pain 2020; 160:1766-1780. [PMID: 31335646 DOI: 10.1097/j.pain.0000000000001567] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Pain is the leading cause of disability in the developed world but remains a poorly treated condition. Specifically, postsurgical pain continues to be a frequent and undermanaged condition. Here, we investigate the analgesic potential of pharmacological NaV1.7 inhibition in a mouse model of acute postsurgical pain, based on incision of the plantar skin and underlying muscle of the hind paw. We demonstrate that local and systemic treatment with the selective NaV1.7 inhibitor μ-theraphotoxin-Pn3a is effectively antiallodynic in this model and completely reverses mechanical hypersensitivity in the absence of motor adverse effects. In addition, the selective NaV1.7 inhibitors ProTx-II and PF-04856264 as well as the clinical candidate CNV1014802 also reduced mechanical allodynia. Interestingly, co-administration of the opioid receptor antagonist naloxone completely reversed analgesic effects of Pn3a, indicating an involvement of endogenous opioids in the analgesic activity of Pn3a. In addition, we found superadditive antinociceptive effects of subtherapeutic Pn3a doses not only with the opioid oxycodone but also with the GABAB receptor agonist baclofen. Transcriptomic analysis of gene expression changes in dorsal root ganglia of mice after surgery did not reveal any changes in mRNA expression of endogenous opioids or opioid receptors; however, several genes involved in pain, including Runx1 (Runt related transcription factor 1), Cacna1a (CaV2.1), and Cacna1b (CaV2.2), were downregulated. In summary, these findings suggest that pain after surgery can be successfully treated with NaV1.7 inhibitors alone or in combination with baclofen or opioids, which may present a novel and safe treatment strategy for this frequent and poorly managed condition.
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Raghuwanshi S, Dahariya S, Sharma DS, Kovuru N, Sahu I, Gutti RK. RUNX1 and TGF‐β signaling cross talk regulates Ca2+ion channels expression and activity during megakaryocyte development. FEBS J 2020; 287:5411-5438. [DOI: 10.1111/febs.15329] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 02/12/2020] [Accepted: 04/06/2020] [Indexed: 01/05/2023]
Affiliation(s)
- Sanjeev Raghuwanshi
- Department of Biochemistry School of Life Sciences University of Hyderabad India
| | - Swati Dahariya
- Department of Biochemistry School of Life Sciences University of Hyderabad India
| | - Durga Shankar Sharma
- Department of Biochemistry School of Life Sciences University of Hyderabad India
| | - Narasaiah Kovuru
- Department of Biochemistry School of Life Sciences University of Hyderabad India
| | - Itishri Sahu
- Department of Biochemistry School of Life Sciences University of Hyderabad India
| | - Ravi Kumar Gutti
- Department of Biochemistry School of Life Sciences University of Hyderabad India
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Remesal L, Roger-Baynat I, Chirivella L, Maicas M, Brocal-Ruiz R, Pérez-Villalba A, Cucarella C, Casado M, Flames N. PBX1 acts as terminal selector for olfactory bulb dopaminergic neurons. Development 2020; 147:dev.186841. [PMID: 32156753 DOI: 10.1242/dev.186841] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Accepted: 02/24/2020] [Indexed: 02/03/2023]
Abstract
Neuronal specification is a protracted process that begins with the commitment of progenitor cells and culminates with the generation of mature neurons. Many transcription factors are continuously expressed during this process but it is presently unclear how these factors modify their targets as cells transition through different stages of specification. In olfactory bulb adult neurogenesis, the transcription factor PBX1 controls neurogenesis in progenitor cells and the survival of migrating neuroblasts. Here, we show that, at later differentiation stages, PBX1 also acts as a terminal selector for the dopaminergic neuron fate. PBX1 is also required for the morphological maturation of dopaminergic neurons and to repress alternative interneuron fates, findings that expand the known repertoire of terminal-selector actions. Finally, we reveal that the temporal diversification of PBX1 functions in neuronal specification is achieved, at least in part, through the dynamic regulation of alternative splicing. In Caenorhabditis elegans, PBX/CEH-20 also acts as a dopaminergic neuron terminal selector, which suggests an ancient role for PBX factors in the regulation of terminal differentiation of dopaminergic neurons.
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Affiliation(s)
- Laura Remesal
- Developmental Neurobiology Unit, Instituto de Biomedicina de Valencia, IBV-CSIC, 46010 Valencia, Spain
| | - Isabel Roger-Baynat
- Developmental Neurobiology Unit, Instituto de Biomedicina de Valencia, IBV-CSIC, 46010 Valencia, Spain
| | - Laura Chirivella
- Developmental Neurobiology Unit, Instituto de Biomedicina de Valencia, IBV-CSIC, 46010 Valencia, Spain
| | - Miren Maicas
- Developmental Neurobiology Unit, Instituto de Biomedicina de Valencia, IBV-CSIC, 46010 Valencia, Spain
| | - Rebeca Brocal-Ruiz
- Developmental Neurobiology Unit, Instituto de Biomedicina de Valencia, IBV-CSIC, 46010 Valencia, Spain
| | - Ana Pérez-Villalba
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Estructura de Recerca Interdisciplinar en Biotecnologia i Biomedicina (ERI BIOTECMED), and Departamento de Biología Celular, Biología Funcional y Antropología Física, Universidad de Valencia, 46100 Burjassot, Spain
| | - Carme Cucarella
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Instituto de Salud Carlos III (ISCIII), Metabolic Experimental Pathology Unit, Instituto de Biomedicina de Valencia, IBV-CSIC, 46010 Valencia, Spain
| | - Marta Casado
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Instituto de Salud Carlos III (ISCIII), Metabolic Experimental Pathology Unit, Instituto de Biomedicina de Valencia, IBV-CSIC, 46010 Valencia, Spain
| | - Nuria Flames
- Developmental Neurobiology Unit, Instituto de Biomedicina de Valencia, IBV-CSIC, 46010 Valencia, Spain
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48
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Xing Y, Chen J, Hilley H, Steele H, Yang J, Han L. Molecular Signature of Pruriceptive MrgprA3 + Neurons. J Invest Dermatol 2020; 140:2041-2050. [PMID: 32234460 DOI: 10.1016/j.jid.2020.03.935] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 03/12/2020] [Accepted: 03/13/2020] [Indexed: 02/07/2023]
Abstract
Itch, initiated by the activation of sensory neurons, is associated frequently with dermatological diseases. MrgprA3+ sensory neurons have been identified as one of the major itch-sensing neuronal populations. Mounting evidence has demonstrated that peripheral pathological conditions induce physiological regulation of sensory neurons, which is critical for the maintenance of chronic itch sensation. However, the underlying molecular mechanisms are not clear. Here, we performed RNA sequencing of genetically labeled MrgprA3+ neurons under both naïve and allergic contact dermatitis conditions. Our results revealed the unique molecular signature of itch-sensing neurons and the distinct transcriptional profile changes that result in response to dermatitis. We found enrichment of nine Mrgpr family members and two histamine receptors in MrgprA3+ neurons, suggesting that MrgprA3+ neurons are a direct neuronal target for histamine and Mrgpr agonists. In addition, PTPN6 and PCDH12 were identified as highly selective markers of MrgprA3+ neurons. We also discovered that MrgprA3+ neurons respond to skin dermatitis in a way that is unique from other sensory neurons by regulating a combination of transcriptional factors, ion channels, and key molecules involved in synaptic transmission. These results significantly increase our knowledge of itch transmission and uncover potential targets for combating itch.
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Affiliation(s)
- Yanyan Xing
- School of Biological Sciences, Georgia Institute of Technology, Atlanta, Georgia, USA
| | - Junyu Chen
- Department of Human Genetics, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Henry Hilley
- School of Biological Sciences, Georgia Institute of Technology, Atlanta, Georgia, USA
| | - Haley Steele
- School of Biological Sciences, Georgia Institute of Technology, Atlanta, Georgia, USA
| | - Jingjing Yang
- Department of Human Genetics, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Liang Han
- School of Biological Sciences, Georgia Institute of Technology, Atlanta, Georgia, USA.
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Qi L, Yin G, Zhang Y, Tao Y, Wu X, Gronostajski RM, Qiu M, Liu Y. Nuclear Factor I/A Controls A-fiber Nociceptor Development. Neurosci Bull 2020; 36:685-695. [PMID: 32221845 PMCID: PMC7340684 DOI: 10.1007/s12264-020-00486-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Accepted: 09/23/2019] [Indexed: 02/07/2023] Open
Abstract
Noxious mechanical information is transmitted through molecularly distinct nociceptors, with pinprick-evoked sharp sensitivity via A-fiber nociceptors marked by developmental expression of the neuropeptide Y receptor 2 (Npy2r) and von Frey filament-evoked punctate pressure information via unmyelinated C fiber nociceptors marked by MrgprD. However, the molecular programs controlling their development are only beginning to be understood. Here we demonstrate that Npy2r-expressing sensory neurons are in fact divided into two groups, based on transient or persistent Npy2r expression. Npy2r-transient neurons are myelinated, likely including A-fiber nociceptors, whereas Npy2r-persistent ones belong to unmyelinated pruriceptors that co-express Nppb. We then showed that the transcription factors NFIA and Runx1 are necessary for the development of Npy2r-transient A-fiber nociceptors and MrgprD+ C-fiber nociceptors, respectively. Behaviorally, mice with conditional knockout of Nfia, but not Runx1 showed a marked attenuation of pinprick-evoked nocifensive responses. Our studies therefore identify a transcription factor controlling the development of myelinated nociceptors.
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Affiliation(s)
- Lu Qi
- College of Life Sciences, Zhejiang University, Hangzhou, 310058, China.,Zhejiang Key Laboratory of Organ Development and Regeneration, Institute of Life Sciences, Hangzhou Normal University, Hangzhou, 310036, China
| | - Guangjuan Yin
- Zhejiang Key Laboratory of Organ Development and Regeneration, Institute of Life Sciences, Hangzhou Normal University, Hangzhou, 310036, China
| | - Yongchao Zhang
- Zhejiang Key Laboratory of Organ Development and Regeneration, Institute of Life Sciences, Hangzhou Normal University, Hangzhou, 310036, China
| | - Yeqi Tao
- Zhejiang Key Laboratory of Organ Development and Regeneration, Institute of Life Sciences, Hangzhou Normal University, Hangzhou, 310036, China
| | - Xiaohua Wu
- Zhejiang Key Laboratory of Organ Development and Regeneration, Institute of Life Sciences, Hangzhou Normal University, Hangzhou, 310036, China
| | - Richard M Gronostajski
- Department of Biochemistry, Program in Genetics, Genomics and Bioinformatics, Center of Excellence in Bioinformatics and Life Sciences, State University of New York at Buffalo, Buffalo, NY, 14203, USA
| | - Mengsheng Qiu
- College of Life Sciences, Zhejiang University, Hangzhou, 310058, China. .,Zhejiang Key Laboratory of Organ Development and Regeneration, Institute of Life Sciences, Hangzhou Normal University, Hangzhou, 310036, China.
| | - Yang Liu
- Zhejiang Key Laboratory of Organ Development and Regeneration, Institute of Life Sciences, Hangzhou Normal University, Hangzhou, 310036, China.
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50
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Lin S, Liu W, Chen CL, Sun D, Hu JX, Li L, Ye J, Mei L, Xiong WC. Neogenin-loss in neural crest cells results in persistent hyperplastic primary vitreous formation. J Mol Cell Biol 2020; 12:17-31. [PMID: 31336386 PMCID: PMC7053014 DOI: 10.1093/jmcb/mjz076] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Revised: 03/07/2019] [Accepted: 06/12/2019] [Indexed: 01/25/2023] Open
Abstract
Neogenin is a transmembrane receptor critical for multiple cellular processes, including neurogenesis, astrogliogenesis, endochondral bone formation, and iron homeostasis. Here we present evidence that loss of neogenin contributes to pathogenesis of persistent hyperplastic primary vitreous (PHPV) formation, a genetic disorder accounting for ~ 5% of blindness in the USA. Selective loss of neogenin in neural crest cells (as observed in Wnt1-Cre; Neof/f mice), but not neural stem cells (as observed in GFAP-Cre and Nestin-Cre; Neof/f mice), resulted in a dysregulation of neural crest cell migration or delamination, exhibiting features of PHPV-like pathology (e.g. elevated retrolental mass), unclosed retinal fissure, and microphthalmia. These results demonstrate an unrecognized function of neogenin in preventing PHPV pathogenesis, implicating neogenin regulation of neural crest cell delamination/migration and retinal fissure formation as potential underlying mechanisms of PHPV.
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Affiliation(s)
- Sen Lin
- Department of Neuroscience & Regenerative Medicine and Department of Neurology, Augusta University, Augusta, GA 30912, USA
- Department of Ophthalmology, Daping Hospital, Army Medical Center of PLA, Chongqing, China
| | - Wei Liu
- Department of Neuroscience & Regenerative Medicine and Department of Neurology, Augusta University, Augusta, GA 30912, USA
- Department of Ophthalmology, Daping Hospital, Army Medical Center of PLA, Chongqing, China
| | - Chun-Lin Chen
- Department of Neuroscience & Regenerative Medicine and Department of Neurology, Augusta University, Augusta, GA 30912, USA
- Department of Ophthalmology, Daping Hospital, Army Medical Center of PLA, Chongqing, China
| | - Dong Sun
- Department of Neuroscience & Regenerative Medicine and Department of Neurology, Augusta University, Augusta, GA 30912, USA
- Department of Neurosciences, School of Medicine, Case Western Reserve University, Cleveland, OH 44106, USA
| | - Jin-Xia Hu
- Department of Neuroscience & Regenerative Medicine and Department of Neurology, Augusta University, Augusta, GA 30912, USA
| | - Lei Li
- Department of Neuroscience & Regenerative Medicine and Department of Neurology, Augusta University, Augusta, GA 30912, USA
| | - Jian Ye
- Department of Ophthalmology, Daping Hospital, Army Medical Center of PLA, Chongqing, China
| | - Lin Mei
- Department of Neuroscience & Regenerative Medicine and Department of Neurology, Augusta University, Augusta, GA 30912, USA
- Department of Neurosciences, School of Medicine, Case Western Reserve University, Cleveland, OH 44106, USA
| | - Wen-Cheng Xiong
- Department of Neuroscience & Regenerative Medicine and Department of Neurology, Augusta University, Augusta, GA 30912, USA
- Department of Neurosciences, School of Medicine, Case Western Reserve University, Cleveland, OH 44106, USA
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