101
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Pilon N. Treatment and Prevention of Neurocristopathies. Trends Mol Med 2021; 27:451-468. [PMID: 33627291 DOI: 10.1016/j.molmed.2021.01.009] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 01/20/2021] [Accepted: 01/28/2021] [Indexed: 02/07/2023]
Abstract
Neurocristopathies form a heterogeneous group of rare diseases caused by abnormal development of neural crest cells. Heterogeneity of neurocristopathies directly relates to the nature of these migratory and multipotent cells, which generate dozens of specialized cell types throughout the body. Neurocristopathies are thus characterized by congenital malformations of tissues/organs that otherwise appear to have very little in common, such as the craniofacial skeleton and enteric nervous system. Treatment options are currently very limited, mainly consisting of corrective surgeries. Yet, as reviewed here, analyses of normal and pathological neural crest development in model organisms have opened up the possibility for better treatment options involving cellular and molecular approaches. These approaches provide hope that some neurocristopathies might soon be curable or preventable.
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Affiliation(s)
- Nicolas Pilon
- Molecular Genetics of Development Laboratory, Département des Sciences Biologiques, Université du Québec à Montréal (UQAM), Montréal H3C 3P8, Québec, Canada; Centre d'Excellence en Recherche sur les Maladies Orphelines - Fondation Courtois (CERMO-FC), Université du Québec à Montréal (UQAM), Montréal H2X 3Y7, Québec, Canada; Département de Pédiatrie, Université de Montréal, Montréal H3T 1C5, Québec, Canada.
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102
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Tandukar B, Kalapurakal E, Hornyak TJ. B6-Dct-H2BGFP bitransgenic mice: A standardized mouse model for in vivo characterization of melanocyte development and stem cell differentiation. Pigment Cell Melanoma Res 2021; 34:905-917. [PMID: 33544968 DOI: 10.1111/pcmr.12959] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 12/14/2020] [Accepted: 01/11/2021] [Indexed: 12/12/2022]
Abstract
Melanocyte stem cells (McSCs) are key components of the hair follicle (HF) stem cell system that regenerate differentiated melanocytes during successive HF cycles. To facilitate continued research on melanocyte development and differentiation and McSCs, we backcrossed inducible Dct-H2BGFP mice into the C57BL/6J background (B6-Dct-H2BGFP). We compared the expression pattern of B6-Dct-H2BGFP to that of Dct-H2BGFP mice on a mixed genetic background reported previously. To characterize B6-Dct-H2BGFP mice, we confirmed not only the expression of GFP in all melanocyte lineage cells, but also doxycycline regulation of GFP expression. Furthermore, ex vivo culture of the McSC subsets isolated by fluorescence-activated cell sorting (FACS) showed the propensity of bulge/CD34+ McSCs to differentiate with expression of non-melanocytic, neural crest lineage markers including glia (Gfap and CNPase, 73 ± 1% and 77 ± 2%, respectively), neurons (Tuj1 26 ± 5%), and smooth muscle (α-Sma, 31 ± 9%). In contrast, CD34-/secondary hair germ (SHG) McSCs differentiated into pigmented melanocytes, with higher expression of melanogenic markers Tyr (71 ± 1%), Tyrp1 (68 ± 4%), and Mitf (75 ± 7%). These results establish the utility of B6-Dct-H2BGFP bitransgenic mice for future in vivo studies of melanocytes requiring a defined genetic background.
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Affiliation(s)
- Bishal Tandukar
- Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Emmanual Kalapurakal
- Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Thomas J Hornyak
- Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, MD, USA.,Department of Dermatology, University of Maryland School of Medicine, Baltimore, MD, USA.,Research & Development Service, VA Maryland Health Care System, Baltimore, MD, USA
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103
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Renauld JM, Davis W, Cai T, Cabrera C, Basch ML. Transcriptomic analysis and ednrb expression in cochlear intermediate cells reveal developmental differences between inner ear and skin melanocytes. Pigment Cell Melanoma Res 2021; 34:585-597. [PMID: 33484097 PMCID: PMC8186279 DOI: 10.1111/pcmr.12961] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 12/29/2020] [Accepted: 01/16/2021] [Indexed: 12/22/2022]
Abstract
In the inner ear, the neural crest gives rise to the glia of the VIII ganglion and two types of melanocytic cells: The pigmented cells of the vestibular system and intermediate cells of the stria vascularis. We analyzed the transcriptome of neonatal intermediate cells in an effort to better understand the development of the stria vascularis. We found that the expression of endothelin receptor B, which is essential for melanocyte development, persists in intermediate cells long after birth. In contrast, skin melanocytes rapidly downregulate the expression of EdnrB. Our findings suggest that endothelins might have co‐opted new functions in the inner ear during evolution of the auditory organ.
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Affiliation(s)
- Justine M Renauld
- Department of Otolaryngology, Head & Neck Surgery, Case Western Reserve University School of Medicine, Cleveland, OH, USA
| | - William Davis
- Department of Otolaryngology, Head & Neck Surgery, Case Western Reserve University School of Medicine, Cleveland, OH, USA
| | - Tiantian Cai
- Program in Developmental Biology, Baylor College of Medicine, Houston, TX, USA
| | - Claudia Cabrera
- Department of Otolaryngology, Head & Neck Surgery, University Hospitals, Cleveland, OH, USA
| | - Martin L Basch
- Department of Otolaryngology, Head & Neck Surgery, Case Western Reserve University School of Medicine, Cleveland, OH, USA.,Department of Otolaryngology, Head & Neck Surgery, University Hospitals, Cleveland, OH, USA.,Department of Genetics and Genome Sciences, Case Western Reserve School of Medicine, Cleveland, OH, USA.,Department of Biology, Case Western Reserve School of Medicine, Cleveland, OH, USA
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104
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Vining CC, Hsu PJ, Miller A, Olson DJ, Gajewski TF, Pytel P, Bauer BS, Millis MJ, Roggin KK. Novel response to neoadjuvant anti-PD1 therapy for a patient with retrocaval melanotic schwannoma. Melanoma Res 2021; 31:92-97. [PMID: 33323721 PMCID: PMC7755705 DOI: 10.1097/cmr.0000000000000711] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Melanotic schwannoma is a rare nerve sheath tumor composed of melanin-producing Schwann cells with the potential for metastasis. These tumors can be associated with familial tumor syndromes and can cause significant symptoms related to nerve compression and mass effect. Due to the rarity of these lesions, they can be initially misidentified as melanocytomas, pigmented dermatofibrosarcoma protuberans, neurofibromas or malignant melanomas. Surgical excision is the mainstay of treatment with limited benefit from adjuvant systemic chemotherapy or radiation. Modern treatments with immune checkpoint blockade have demonstrated significant improvements in progression-free and overall survival for a variety of cancer histologies; however, anti-PD1 therapy has yet to be evaluated in patients with melanotic schwannoma. This report demonstrates a significant improvement in symptomatology and tumor stability with neoadjuvant anti-PD1 therapy for a retrocaval melanotic schwannoma initially masquerading as malignant melanoma. This report demonstrates the potential benefit of a novel therapeutic option for patients with melanotic schwannoma.
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Affiliation(s)
- Charles C. Vining
- University of Chicago Medical Center, Department of Surgical Oncology
| | - Phillip J. Hsu
- University of Chicago Medical Center, Department of Surgical Oncology
- University of Chicago, Medical Scientist Training Program
| | - Aaron Miller
- University of Chicago Medical Center, Department of Pathology
| | - Daniel J. Olson
- University of Chicago Medical Center, Department of Hematology and Oncology
| | - Thomas F. Gajewski
- University of Chicago Medical Center, Department of Hematology and Oncology
| | - Peter Pytel
- University of Chicago Medical Center, Department of Pathology
| | - Bruce S. Bauer
- University of Chicago Medical Center, Department of Plastic and Reconstructive Surgery
| | - Michael J. Millis
- University of Chicago Medical Center, Department of Surgical Oncology
| | - Kevin K. Roggin
- University of Chicago Medical Center, Department of Surgical Oncology
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105
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García-Martínez FJ, Azorín D, Duat-Rodríguez A, Hernández-Martín Á. Angeborene kutane Neurofibrome bei Neurofibromatose Typ 1: Klinisch‐pathologische Merkmale in der frühen Kindheit. J Dtsch Dermatol Ges 2021; 19:73-81. [PMID: 33491906 DOI: 10.1111/ddg.14322_g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Accepted: 05/26/2020] [Indexed: 01/21/2023]
Affiliation(s)
| | - Daniel Azorín
- Abteilung Pathologie, Hospital Infantil Universitario Niño Jesús, Madrid, Spanien
| | - Anna Duat-Rodríguez
- Abteilung Pädiatrische Neurologie, Hospital Infantil Universitario Niño Jesús, Madrid, Spanien
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106
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El Fersioui Y, Pinton G, Allaman-Pillet N, Schorderet DF. Hmx1 regulates urfh1 expression in the craniofacial region in zebrafish. PLoS One 2021; 16:e0245239. [PMID: 33465110 PMCID: PMC7815118 DOI: 10.1371/journal.pone.0245239] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Accepted: 12/24/2020] [Indexed: 11/19/2022] Open
Abstract
H6 family homeobox 1 (HMX1) regulates multiple aspects of craniofacial development as it is widely expressed in the eye, peripheral ganglia and branchial arches. Mutations in HMX1 are linked to an ocular defect termed Oculo-auricular syndrome of Schorderet-Munier-Franceschetti (MIM #612109). We identified UHRF1 as a target of HMX1 during development. UHRF1 and its partner proteins actively regulate chromatin modifications and cellular proliferation. Luciferase assays and in situ hybridization analyses showed that HMX1 exerts a transcriptional inhibitory effect on UHRF1 and a modification of its expression pattern. Overexpression of hmx1 in hsp70-hmx1 zebrafish increased uhrf1 expression in the cranial region, while mutations in the hmx1 dimerization domains reduced uhrf1 expression. Moreover, the expression level of uhrf1 and its partner dnmt1 was increased in the eye field in response to hmx1 overexpression. These results indicate that hmx1 regulates uhrf1 expression and, potentially through regulating the expression of factors involved in DNA methylation, contribute to the development of the craniofacial region of zebrafish.
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Affiliation(s)
- Younes El Fersioui
- IRO – Institute for Research in Ophthalmology, Sion, Switzerland
- * E-mail: (YEF); (DFS)
| | - Gaëtan Pinton
- IRO – Institute for Research in Ophthalmology, Sion, Switzerland
| | | | - Daniel F. Schorderet
- IRO – Institute for Research in Ophthalmology, Sion, Switzerland
- Faculty of Life Sciences, Swiss Federal Institute of Technology (EPFL), Lausanne, Switzerland
- Faculty of Biology and Medicine, University of Lausanne, Lausanne, Switzerland
- * E-mail: (YEF); (DFS)
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107
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García-Martínez FJ, Azorín D, Duat-Rodríguez A, Hernández-Martín Á. Congenital cutaneous neurofibromas in neurofibromatosis type 1: Clinicopathological features in early infancy. J Dtsch Dermatol Ges 2021; 19:73-80. [PMID: 33448128 DOI: 10.1111/ddg.14322] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Accepted: 05/26/2020] [Indexed: 12/12/2022]
Abstract
BACKGROUND AND OBJECTIVE Clinicopathological features of cutaneous neurofibromas presenting as large irregularly shaped congenital café-au-lait macules (CALM) in Neurofibromatosis type 1 (NF1) patients have not been well characterized. We aimed to analyze the histopathological findings of large "atypical" CALM in children with NF1. PATIENTS AND METHODS In this retrospective observational study we analyzed histopathological and immunostaining features of 21 biopsy specimens from 18 large hyperpigmented macules with irregular borders with or without hypertrichosis present during the first months of life in NF1 diagnosed children. RESULTS Of the 21 biopsies, ten showed a diffuse neurofibroma pattern and four exhibited characteristics of plexiform neurofibroma (PNF). In twelve specimens we observed groups of fusiform cells arranged linearly mimicking a small caliber nerve trunk with abnormal morphology. Repeated biopsies from two of these lesions performed at different ages showed transformation to a plexiform pattern. An increased interstitial cellularity was observed in 17 samples that was more evident around eccrine glands in 16 or accompanying hair follicles and vascular structures in twelve samples. All these cells had immunoreactivity for S100-protein, CD68 and were Melan-A positive in 15 samples. CONCLUSION Clinicopathological findings of congenital cutaneous neurofibromas provide early diagnostic clues of NF1 with high relevance for monitoring of these patients.
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Affiliation(s)
| | - Daniel Azorín
- Pathology Department, Hospital Infantil Universitario Niño Jesús, Madrid, Spain
| | - Anna Duat-Rodríguez
- Pediatric Neurology Department, Hospital Infantil Universitario Niño Jesús, Madrid, Spain
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108
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Kameneva P, Kastriti ME, Adameyko I. Neuronal lineages derived from the nerve-associated Schwann cell precursors. Cell Mol Life Sci 2021; 78:513-529. [PMID: 32748156 PMCID: PMC7873084 DOI: 10.1007/s00018-020-03609-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 05/18/2020] [Accepted: 07/22/2020] [Indexed: 12/26/2022]
Abstract
For a long time, neurogenic placodes and migratory neural crest cells were considered the immediate sources building neurons of peripheral nervous system. Recently, a number of discoveries revealed the existence of another progenitor type-a nerve-associated multipotent Schwann cell precursors (SCPs) building enteric and parasympathetic neurons as well as neuroendocrine chromaffin cells. SCPs are neural crest-derived and are similar to the crest cells by their markers and differentiation potential. Such similarities, but also considerable differences, raise many questions pertaining to the medical side, fundamental developmental biology and evolution. Here, we discuss the genesis of Schwann cell precursors, their role in building peripheral neural structures and ponder on their role in the origin in congenial diseases associated with peripheral nervous systems.
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Affiliation(s)
- Polina Kameneva
- Department of Physiology and Pharmacology, Karolinska Institute, Stockholm, 171 77, Sweden
| | - Maria Eleni Kastriti
- Department of Physiology and Pharmacology, Karolinska Institute, Stockholm, 171 77, Sweden
- Department of Molecular Neurosciences, Center for Brain Research, Medical University Vienna, Vienna, 1090, Austria
| | - Igor Adameyko
- Department of Physiology and Pharmacology, Karolinska Institute, Stockholm, 171 77, Sweden.
- Department of Molecular Neurosciences, Center for Brain Research, Medical University Vienna, Vienna, 1090, Austria.
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109
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Thawani A, Groves AK. Building the Border: Development of the Chordate Neural Plate Border Region and Its Derivatives. Front Physiol 2020; 11:608880. [PMID: 33364980 PMCID: PMC7750469 DOI: 10.3389/fphys.2020.608880] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Accepted: 11/19/2020] [Indexed: 01/04/2023] Open
Abstract
The paired cranial sensory organs and peripheral nervous system of vertebrates arise from a thin strip of cells immediately adjacent to the developing neural plate. The neural plate border region comprises progenitors for four key populations of cells: neural plate cells, neural crest cells, the cranial placodes, and epidermis. Putative homologues of these neural plate border derivatives can be found in protochordates such as amphioxus and tunicates. In this review, we summarize key signaling pathways and transcription factors that regulate the inductive and patterning events at the neural plate border region that give rise to the neural crest and placodal lineages. Gene regulatory networks driven by signals from WNT, fibroblast growth factor (FGF), and bone morphogenetic protein (BMP) signaling primarily dictate the formation of the crest and placodal lineages. We review these studies and discuss the potential of recent advances in spatio-temporal transcriptomic and epigenomic analyses that would allow a mechanistic understanding of how these signaling pathways and their downstream transcriptional cascades regulate the formation of the neural plate border region.
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Affiliation(s)
- Ankita Thawani
- Department of Neuroscience, Baylor College of Medicine, Houston, TX, United States
| | - Andrew K Groves
- Department of Neuroscience, Baylor College of Medicine, Houston, TX, United States.,Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, United States
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110
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Diener J, Sommer L. Reemergence of neural crest stem cell-like states in melanoma during disease progression and treatment. Stem Cells Transl Med 2020; 10:522-533. [PMID: 33258291 PMCID: PMC7980219 DOI: 10.1002/sctm.20-0351] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 10/28/2020] [Accepted: 11/04/2020] [Indexed: 12/14/2022] Open
Abstract
Melanoma is the deadliest of all skin cancers due to its high metastatic potential. In recent years, advances in targeted therapy and immunotherapy have contributed to a remarkable progress in the treatment of metastatic disease. However, intrinsic or acquired resistance to such therapies remains a major obstacle in melanoma treatment. Melanoma disease progression, beginning from tumor initiation and growth to acquisition of invasive phenotypes and metastatic spread and acquisition of treatment resistance, has been associated with cellular dedifferentiation and the hijacking of gene regulatory networks reminiscent of the neural crest (NC)—the developmental structure which gives rise to melanocytes and hence melanoma. This review summarizes the experimental evidence for the involvement of NC stem cell (NCSC)‐like cell states during melanoma progression and addresses novel approaches to combat the emergence of stemness characteristics that have shown to be linked with aggressive disease outcome and drug resistance.
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Affiliation(s)
- Johanna Diener
- University of Zurich, Institute of Anatomy, Zürich, Switzerland
| | - Lukas Sommer
- University of Zurich, Institute of Anatomy, Zürich, Switzerland
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111
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Perera SN, Kerosuo L. On the road again: Establishment and maintenance of stemness in the neural crest from embryo to adulthood. STEM CELLS (DAYTON, OHIO) 2020; 39:7-25. [PMID: 33017496 PMCID: PMC7821161 DOI: 10.1002/stem.3283] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 09/08/2020] [Accepted: 09/11/2020] [Indexed: 12/22/2022]
Abstract
Unique to vertebrates, the neural crest (NC) is an embryonic stem cell population that contributes to a greatly expanding list of derivatives ranging from neurons and glia of the peripheral nervous system, facial cartilage and bone, pigment cells of the skin to secretory cells of the endocrine system. Here, we focus on what is specifically known about establishment and maintenance of NC stemness and ultimate fate commitment mechanisms, which could help explain its exceptionally high stem cell potential that exceeds the "rules set during gastrulation." In fact, recent discoveries have shed light on the existence of NC cells that coexpress commonly accepted pluripotency factors like Nanog, Oct4/PouV, and Klf4. The coexpression of pluripotency factors together with the exceptional array of diverse NC derivatives encouraged us to propose a new term "pleistopotent" (Greek for abundant, a substantial amount) to be used to reflect the uniqueness of the NC as compared to other post-gastrulation stem cell populations in the vertebrate body, and to differentiate them from multipotent lineage restricted stem cells. We also discuss studies related to the maintenance of NC stemness within the challenging context of being a transient and thus a constantly changing population of stem cells without a permanent niche. The discovery of the stem cell potential of Schwann cell precursors as well as multiple adult NC-derived stem cell reservoirs during the past decade has greatly increased our understanding of how NC cells contribute to tissues formed after its initial migration stage in young embryos.
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Affiliation(s)
- Surangi N Perera
- Neural Crest Development and Disease Unit, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, Maryland, USA
| | - Laura Kerosuo
- Neural Crest Development and Disease Unit, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, Maryland, USA
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112
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Muppirala AN, Limbach LE, Bradford EF, Petersen SC. Schwann cell development: From neural crest to myelin sheath. WILEY INTERDISCIPLINARY REVIEWS-DEVELOPMENTAL BIOLOGY 2020; 10:e398. [PMID: 33145925 DOI: 10.1002/wdev.398] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 10/06/2020] [Accepted: 10/07/2020] [Indexed: 12/16/2022]
Abstract
Vertebrate nervous system function requires glial cells, including myelinating glia that insulate axons and provide trophic support that allows for efficient signal propagation by neurons. In vertebrate peripheral nervous systems, neural crest-derived glial cells known as Schwann cells (SCs) generate myelin by encompassing and iteratively wrapping membrane around single axon segments. SC gliogenesis and neurogenesis are intimately linked and governed by a complex molecular environment that shapes their developmental trajectory. Changes in this external milieu drive developing SCs through a series of distinct morphological and transcriptional stages from the neural crest to a variety of glial derivatives, including the myelinating sublineage. Cues originate from the extracellular matrix, adjacent axons, and the developing SC basal lamina to trigger intracellular signaling cascades and gene expression changes that specify stages and transitions in SC development. Here, we integrate the findings from in vitro neuron-glia co-culture experiments with in vivo studies investigating SC development, particularly in zebrafish and mouse, to highlight critical factors that specify SC fate. Ultimately, we connect classic biochemical and mutant studies with modern genetic and visualization tools that have elucidated the dynamics of SC development. This article is categorized under: Signaling Pathways > Cell Fate Signaling Nervous System Development > Vertebrates: Regional Development.
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Affiliation(s)
- Anoohya N Muppirala
- Program in Neuroscience, Harvard Medical School, Boston, Massachusetts, USA.,Department of Neuroscience, Kenyon College, Gambier, Ohio, USA
| | | | | | - Sarah C Petersen
- Department of Neuroscience, Kenyon College, Gambier, Ohio, USA.,Department of Biology, Kenyon College, Gambier, Ohio, USA
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113
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Bonnamour G, Soret R, Pilon N. Dhh-expressing Schwann cell precursors contribute to skin and cochlear melanocytes, but not to vestibular melanocytes. Pigment Cell Melanoma Res 2020; 34:648-654. [PMID: 33089656 DOI: 10.1111/pcmr.12938] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 10/15/2020] [Accepted: 10/17/2020] [Indexed: 12/18/2022]
Abstract
For a long time, melanocytes were believed to be exclusively derived from neural crest cells migrating from the neural tube toward the developing skin. This notion was then challenged by studies suggesting that melanocytes could also be made from neural crest-derived Schwann cell precursors (SCPs) on peripheral nerves. A SCP origin was inferred from lineage tracing studies in mice using a Plp1 promoter-controlled Cre driver transgene (Plp1-CreERT2) and a fluorescent Rosa26 locus-controlled Cre reporter allele (Rosa26FloxSTOP-YFP ). However, doubts were raised in part because another SCP-directed Cre driver controlled by the Dhh promoter (Dhh-Cre) was apparently unable to label melanocytes when used with a non-fluorescent Rosa26 locus-controlled Cre reporter (Rosa26FloxSTOP-LacZ ). Here, we report that the same Dhh-Cre driver line can efficiently label melanocytes when used in a pure FVB/N background together with the fluorescent instead of the non-fluorescent Rosa26 locus-controlled Cre reporter. Our data further suggest that the vast majority of skin melanocytes are SCP-derived. Interestingly, we also discovered that SCPs contribute inner ear melanocytes in a region-specific manner, extensively contributing to the cochlea but not to the vestibule.
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Affiliation(s)
- Grégoire Bonnamour
- Molecular Genetics of Development Laboratory, Département des Sciences Biologiques, Université du Québec à Montréal (UQAM), Montréa, QC, Canada.,Centre d'excellence en recherche sur les maladies orphelines - Fondation Courtois (CERMO-FC), Université du Québec à Montréal, Montréal, QC, Canada
| | - Rodolphe Soret
- Molecular Genetics of Development Laboratory, Département des Sciences Biologiques, Université du Québec à Montréal (UQAM), Montréa, QC, Canada.,Centre d'excellence en recherche sur les maladies orphelines - Fondation Courtois (CERMO-FC), Université du Québec à Montréal, Montréal, QC, Canada
| | - Nicolas Pilon
- Molecular Genetics of Development Laboratory, Département des Sciences Biologiques, Université du Québec à Montréal (UQAM), Montréa, QC, Canada.,Centre d'excellence en recherche sur les maladies orphelines - Fondation Courtois (CERMO-FC), Université du Québec à Montréal, Montréal, QC, Canada.,Département de pédiatrie, Université de Montréal, Montréal, QC, Canada
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114
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van Beelen ESA, van der Valk WH, de Groot JCMJ, Hensen EF, Locher H, van Benthem PPG. Migration and fate of vestibular melanocytes during the development of the human inner ear. Dev Neurobiol 2020; 80:411-432. [PMID: 33075185 PMCID: PMC7894185 DOI: 10.1002/dneu.22786] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 10/12/2020] [Accepted: 10/12/2020] [Indexed: 12/19/2022]
Abstract
Melanocytes are present in various parts of the inner ear, including the stria vascularis in the cochlea and the dark cell areas in the vestibular organs, where they contribute to endolymph homeostasis. Developmental studies describing the distribution of vestibular melanocytes are scarce, especially in humans. In this study, we investigated the distribution and maturation of the vestibular melanocytes in relation to the developing dark cell epithelium in inner ear specimens from week 5 to week 14 of development and in surgical specimens of the adult ampulla. Vestibular melanocytes were located around the utricle and the ampullae of the semicircular canals before week 7 and were first seen underneath the transitional zones and dark cell areas between week 8 and week 10. At week 10, melanocytes made intimate contact with epithelial cells, interrupting the local basement membrane with their dendritic processes. At week 11, most melanocytes were positioned under the dark cell epithelia. No melanocytes were seen around or in the saccule during all investigated developmental stages. The dark cell areas gradually matured and showed an adult immunohistochemical profile of the characteristic ion transporter protein Na+/K+‐ATPase α1 by week 14. Furthermore, we investigated the expression of the migration‐related proteins ECAD, PCAD, KIT, and KITLG in melanocytes and dark cell epithelium. This is the first study to describe the spatiotemporal distribution of vestibular melanocytes during the human development and thereby contributes to understanding normal vestibular function and pathophysiological mechanisms underlying vestibular disorders.
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Affiliation(s)
- Edward S A van Beelen
- Department of Otorhinolaryngology and Head & Neck Surgery, Leiden University Medical Center, Leiden, the Netherlands
| | - Wouter H van der Valk
- Department of Otorhinolaryngology and Head & Neck Surgery, Leiden University Medical Center, Leiden, the Netherlands
| | - John C M J de Groot
- Department of Otorhinolaryngology and Head & Neck Surgery, Leiden University Medical Center, Leiden, the Netherlands
| | - Erik F Hensen
- Department of Otorhinolaryngology and Head & Neck Surgery, Leiden University Medical Center, Leiden, the Netherlands
| | - Heiko Locher
- Department of Otorhinolaryngology and Head & Neck Surgery, Leiden University Medical Center, Leiden, the Netherlands
| | - Peter Paul G van Benthem
- Department of Otorhinolaryngology and Head & Neck Surgery, Leiden University Medical Center, Leiden, the Netherlands
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115
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Speeckaert R, Lambert J, Bulat V, Belpaire A, Speeckaert M, van Geel N. Autoimmunity in Segmental Vitiligo. Front Immunol 2020; 11:568447. [PMID: 33193342 PMCID: PMC7655129 DOI: 10.3389/fimmu.2020.568447] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Accepted: 10/08/2020] [Indexed: 12/20/2022] Open
Abstract
The autoimmune basis of segmental vitiligo (SV) has only recently been recognized. Systemic autoimmune diseases are less frequently associated compared to non-segmental vitiligo (NSV), but localized skin disorders - in particular linear morphea - have been repeatedly observed in patients with SV. The inflammatory response is documented on a clinical level with cases displaying erythematous borders or a hypochromic stage, on a histopathological level with predominantly CD8 lymphocytes migrating toward the basal layer and by flow cytometry demonstrating the antimelanocyte specificity of these cytotoxic T cells. The increased risk for halo naevi and NSV in these patients further underline the immune-mediated mechanisms of SV. Nonetheless, the localized and unique distribution pattern points to somatic mosaicism. This places SV in a category of similar diseases such as lichen striatus, blaschkitis, linear lupus erythematosus, and linear scleroderma where an immune reaction against genetically mutated skin cells is believed to be the underlying cause. All these disorders are characterized by a young age of onset, a temporary disease activity with spontaneous resolution, limited response to treatment, and often long-term sequelae. Although challenging, genetic research proving this genetic mosaicism could offer crucial insights into the pathogenesis of both segmental and non-segmental vitiligo.
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Affiliation(s)
| | - Jo Lambert
- Department of Dermatology, Gent University Hospital, Gent, Belgium
| | - Vedrana Bulat
- Department of Dermatology, University Hospital Centre Zagreb, Zagreb, Croatia
| | - Arno Belpaire
- Department of Dermatology, Gent University Hospital, Gent, Belgium
| | | | - Nanja van Geel
- Department of Dermatology, Gent University Hospital, Gent, Belgium
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Rocha M, Beiriger A, Kushkowski EE, Miyashita T, Singh N, Venkataraman V, Prince VE. From head to tail: regionalization of the neural crest. Development 2020; 147:dev193888. [PMID: 33106325 PMCID: PMC7648597 DOI: 10.1242/dev.193888] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The neural crest is regionalized along the anteroposterior axis, as demonstrated by foundational lineage-tracing experiments that showed the restricted developmental potential of neural crest cells originating in the head. Here, we explore how recent studies of experimental embryology, genetic circuits and stem cell differentiation have shaped our understanding of the mechanisms that establish axial-specific populations of neural crest cells. Additionally, we evaluate how comparative, anatomical and genomic approaches have informed our current understanding of the evolution of the neural crest and its contribution to the vertebrate body.
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Affiliation(s)
- Manuel Rocha
- Committee on Development, Regeneration and Stem Cell Biology, The University of Chicago, Chicago, IL 60637, USA
| | - Anastasia Beiriger
- Department of Organismal Biology and Anatomy, The University of Chicago, Chicago, IL 60637, USA
| | - Elaine E Kushkowski
- Committee on Development, Regeneration and Stem Cell Biology, The University of Chicago, Chicago, IL 60637, USA
| | - Tetsuto Miyashita
- Department of Organismal Biology and Anatomy, The University of Chicago, Chicago, IL 60637, USA
- Canadian Museum of Nature, Ottawa, ON K1P 6P4, Canada
| | - Noor Singh
- Department of Organismal Biology and Anatomy, The University of Chicago, Chicago, IL 60637, USA
| | - Vishruth Venkataraman
- Department of Organismal Biology and Anatomy, The University of Chicago, Chicago, IL 60637, USA
| | - Victoria E Prince
- Committee on Development, Regeneration and Stem Cell Biology, The University of Chicago, Chicago, IL 60637, USA
- Department of Organismal Biology and Anatomy, The University of Chicago, Chicago, IL 60637, USA
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Milichko V, Dyachuk V. Novel Glial Cell Functions: Extensive Potency, Stem Cell-Like Properties, and Participation in Regeneration and Transdifferentiation. Front Cell Dev Biol 2020; 8:809. [PMID: 33015034 PMCID: PMC7461986 DOI: 10.3389/fcell.2020.00809] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Accepted: 07/31/2020] [Indexed: 12/26/2022] Open
Abstract
Glial cells are the most abundant cells in both the peripheral and central nervous systems. During the past decade, a subpopulation of immature peripheral glial cells, namely, embryonic Schwann cell-precursors, have been found to perform important functions related to development. These cells have properties resembling those of the neural crest and, depending on their location in the body, can transform into several different cell types in peripheral tissues, including autonomic neurons. This review describes the multipotent properties of Schwann cell-precursors and their importance, together with innervation, during early development. The heterogeneity of Schwann cells, as revealed using single-cell transcriptomics, raises a question on whether some glial cells in the adult peripheral nervous system retain their stem cell-like properties. We also discuss how a deeper insight into the biology of both embryonic and adult Schwann cells might lead to an effective treatment of the damage of both neural and non-neural tissues, including the damage caused by neurodegenerative diseases. Furthermore, understanding the potential involvement of Schwann cells in the regulation of tumor development may reveal novel targets for cancer treatment.
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Affiliation(s)
- Valentin Milichko
- Department of Nanophotonics and Metamaterials, ITMO University, St. Petersburg, Russia
| | - Vyacheslav Dyachuk
- Department of Nanophotonics and Metamaterials, ITMO University, St. Petersburg, Russia.,National Scientific Center of Marine Biology, Far Eastern Branch, Russian Academy of Sciences, Vladivostok, Russia
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118
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Melanocytes derived from mouse hair follicles: A novel study model to assess pigmentation disorders. Pathol Res Pract 2020; 216:153224. [PMID: 33027751 DOI: 10.1016/j.prp.2020.153224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 08/29/2020] [Accepted: 09/15/2020] [Indexed: 11/23/2022]
Abstract
Melanocytes are the major cells responsible for skin and fair pigmentation in vertebrates. They localize to hair follicles(HFs) and the epidermis during embryonic development. A reduced number or dysfunction of melanocytes results in pigmentation disorders.Thus, methods for isolation, culture, and identification of melanocytes in mouse hair follicles provide an experimental basis for thestudy of of pigmentation disorders. In the current work, we harvested the melanocytes from the anagen phase dorsal skin of C57BL/6 mice.After its separation from the skin, the dermis was digested, and the HFs were released. HFs were then also digested, and the cells released from HFs were cultured in melanocyte growth medium. Immunofluorescence and immunohistochemistry staining were used to localize the distribution of melanocytes in HFs . Reverse transcription polymerase chain reaction was performed to detect the expression of specific melanocyte marker genes. Immunofluorescence, immunohistochemistry, flow cytometry, and western blot were carried out to detect the expression of marker proteins in cells. 3,4-Dihydroxy-L-phenylalanine (L-DOPA) staining was used to detect the pigmentation functionality of melaonocytes. Based on our results, we conclude that mature and functional melanocytes can be successfully obtained from theHFs, providing a cell model to study pigmentation disorders. The current findings provide novel insights for the treatment of pigmentation disorders by autologous cell transplantation. Further, we believe that issues related to skin damage, insufficient numbers of autologous cells, and autoimmune problems can be resolved in future though the use of functional melanocytes.
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119
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Bedoui Y, Lebeau G, Guillot X, Dargai F, Guiraud P, Neal JW, Ralandison S, Gasque P. Emerging Roles of Perivascular Mesenchymal Stem Cells in Synovial Joint Inflammation. J Neuroimmune Pharmacol 2020; 15:838-851. [PMID: 32964324 DOI: 10.1007/s11481-020-09958-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Accepted: 09/10/2020] [Indexed: 02/06/2023]
Abstract
In contrast to the significant advances in our understanding of the mesenchymal stem cell (MSC) populations in bone marrow (BM), little is known about the MSCs that are resident in the synovial joint and their possible roles in the tissue homeostasis, chronic inflammation as well as in repair. Neural crest is a transient embryonic structure, generating multipotential MSC capable of migrating along peripheral nerves and blood vessels to colonize most tissue types. In adult, these MSC can provide functional stromal support as a stem cell niche for lymphocyte progenitors for instance in the BM and the thymus. Critically, MSC have major immunoregulatory activities to control adverse inflammation and infection. These MSC will remain associated to vessels (perivascular (p) MSC) and their unique expression of markers such as myelin P0 and transcription factors (e.g. Gli1 and FoxD1) has been instrumental to develop transgenic mice to trace the fate of these cells in health and disease conditions. Intriguingly, recent investigations of chronic inflammatory diseases argue for an emerging role of pMSC in several pathological processes. In response to tissue injuries and with the release of host cell debris (e.g. alarmins), pMSC can detach from vessels and proliferate to give rise to either lipofibroblasts, osteoblasts involved in the ossification of arteries and myofibroblasts contributing to fibrosis. This review will discuss currently available data that suggest a role of pMSC in tissue homeostasis and pathogenesis of the synovial tissue and joints. Graphical abstract.
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Affiliation(s)
- Yosra Bedoui
- Unité de recherche EPI (Etudes Pharmacoimmunologiques), Université de la Réunion, 97400, St Denis, La Réunion, France
| | - Grégorie Lebeau
- Unité de recherche EPI (Etudes Pharmacoimmunologiques), Université de la Réunion, 97400, St Denis, La Réunion, France
| | - Xavier Guillot
- Service de Rhumatologie, CHU Bellepierre, Felix Guyon et Unité de recherche EPI, 97400, St Denis, La Réunion, France
| | - Farouk Dargai
- Chirurgie orthopédique et traumatologie, CHU Bellepierre, Felix Guyon, St Denis, La Réunion, France
| | - Pascale Guiraud
- Unité de recherche EPI (Etudes Pharmacoimmunologiques), Université de la Réunion, 97400, St Denis, La Réunion, France
| | - Jim W Neal
- Infection and Immunity, Henry Wellcome Building, Cardiff University, Cardiff, CF14 4XN, UK
| | - Stéphane Ralandison
- Service de Rhumatologie- Médecine Interne, CHU Morafeno, Toamasina, Madagascar
| | - Philippe Gasque
- Unité de recherche EPI (Etudes Pharmacoimmunologiques), Université de la Réunion, 97400, St Denis, La Réunion, France. .,Pôle de Biologie, Laboratoire d'Immunologique Clinique et expérimentale ZOI, LICE-OI, CHU Bellepierre, Felix Guyon, St Denis, La Réunion, France.
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Abstract
Investigations of the cellular and molecular mechanisms that mediate the development of the autonomic nervous system have identified critical genes and signaling pathways that, when disrupted, cause disorders of the autonomic nervous system. This review summarizes our current understanding of how the autonomic nervous system emerges from the organized spatial and temporal patterning of precursor cell migration, proliferation, communication, and differentiation, and discusses potential clinical implications for developmental disorders of the autonomic nervous system, including familial dysautonomia, Hirschsprung disease, Rett syndrome, and congenital central hypoventilation syndrome.
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Affiliation(s)
- Frances Lefcort
- Department of Cell Biology and Neuroscience, Montana State University, Bozeman, Montana
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121
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Insights into Differentiation of Melanocytes from Human Stem Cells and Their Relevance for Melanoma Treatment. Cancers (Basel) 2020; 12:cancers12092508. [PMID: 32899370 PMCID: PMC7564443 DOI: 10.3390/cancers12092508] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 08/20/2020] [Accepted: 09/01/2020] [Indexed: 12/27/2022] Open
Abstract
Simple Summary The reactivation of embryonic developmental programs is crucial for melanoma cells to grow and to metastasize. In order to understand this process better, we first summarize the melanocytic differentiation process both in vivo and in vitro. Secondly, we compare and highlight important similarities between neural crest cell fate during differentiation and tumor cell characteristics during melanoma mestastasis. Finally, we suggest possible therapeutic targets, which could be used to inhibit phenotype switching by developmental cues and hence also suppress the metastatic melanoma spread. Abstract Malignant melanoma represents a highly aggressive form of skin cancer. The metastatic process itself is mostly governed by the so-called epithelial mesenchymal transition (EMT), which confers cancer cells migrative, invasive and resistance abilities. Since EMT represents a conserved developmental process, it is worthwhile further examining the nature of early developmental steps fundamental for melanocyte differentiation. This can be done either in vivo by analyzing the physiologic embryo development in different species or by in vitro studies of melanocytic differentiation originating from embryonic human stem cells. Most importantly, external cues drive progenitor cell differentiation, which can be divided in stages favoring neural crest specification or melanocytic differentiation and proliferation. In this review, we describe ectopic factors which drive human pluripotent stem cell differentiation to melanocytes in 2D, as well as in organoid models. Furthermore, we compare developmental mechanisms with processes described to occur during melanoma development. Finally, we suggest differentiation factors as potential co-treatment options for metastatic melanoma patients.
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122
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Perera SN, Williams RM, Lyne R, Stubbs O, Buehler DP, Sauka-Spengler T, Noda M, Micklem G, Southard-Smith EM, Baker CVH. Insights into olfactory ensheathing cell development from a laser-microdissection and transcriptome-profiling approach. Glia 2020; 68:2550-2584. [PMID: 32857879 PMCID: PMC7116175 DOI: 10.1002/glia.23870] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 05/23/2020] [Accepted: 05/27/2020] [Indexed: 12/14/2022]
Abstract
Olfactory ensheathing cells (OECs) are neural crest-derived glia that ensheath bundles of olfactory axons from their peripheral origins in the olfactory epithelium to their central targets in the olfactory bulb. We took an unbiased laser microdissection and differential RNA-seq approach, validated by in situ hybridization, to identify candidate molecular mechanisms underlying mouse OEC development and differences with the neural crest-derived Schwann cells developing on other peripheral nerves. We identified 25 novel markers for developing OECs in the olfactory mucosa and/or the olfactory nerve layer surrounding the olfactory bulb, of which 15 were OEC-specific (that is, not expressed by Schwann cells). One pan-OEC-specific gene, Ptprz1, encodes a receptor-like tyrosine phosphatase that blocks oligodendrocyte differentiation. Mutant analysis suggests Ptprz1 may also act as a brake on OEC differentiation, and that its loss disrupts olfactory axon targeting. Overall, our results provide new insights into OEC development and the diversification of neural crest-derived glia.
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Affiliation(s)
- Surangi N Perera
- Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge, UK
| | - Ruth M Williams
- MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, UK
| | - Rachel Lyne
- Department of Genetics, University of Cambridge, Cambridge, UK
| | - Oliver Stubbs
- Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge, UK
| | - Dennis P Buehler
- Division of Genetic Medicine, Department of Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Tatjana Sauka-Spengler
- MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, UK
| | - Masaharu Noda
- Division of Molecular Neurobiology, National Institute for Basic Biology, Okazaki, Japan
| | - Gos Micklem
- Department of Genetics, University of Cambridge, Cambridge, UK
| | - E Michelle Southard-Smith
- Division of Genetic Medicine, Department of Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Clare V H Baker
- Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge, UK
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Hida T, Kamiya T, Kawakami A, Ogino J, Sohma H, Uhara H, Jimbow K. Elucidation of Melanogenesis Cascade for Identifying Pathophysiology and Therapeutic Approach of Pigmentary Disorders and Melanoma. Int J Mol Sci 2020; 21:ijms21176129. [PMID: 32854423 PMCID: PMC7503925 DOI: 10.3390/ijms21176129] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Revised: 08/22/2020] [Accepted: 08/22/2020] [Indexed: 12/15/2022] Open
Abstract
Melanogenesis is the biological and biochemical process of melanin and melanosome biosynthesis. Melanin is formed by enzymic reactions of tyrosinase family proteins that convert tyrosine to form brown-black eumelanin and yellow-red pheomelanin within melanosomal compartments in melanocytes, following the cascades of events interacting with a series of autocrine and paracrine signals. Fully melanized melanosomes are delivered to keratinocytes of the skin and hair. The symbiotic relation of a melanocyte and an associated pool of keratinocytes is called epidermal melanin unit (EMU). Microphthalmia-associated transcription factor (MITF) plays a vital role in melanocyte development and differentiation. MITF regulates expression of numerous pigmentation genes for promoting melanocyte differentiation, as well as fundamental genes for maintaining cell homeostasis. Diseases involving alterations of EMU show various forms of pigmentation phenotypes. This review introduces four major topics of melanogenesis cascade that include (1) melanocyte development and differentiation, (2) melanogenesis and intracellular trafficking for melanosome biosynthesis, (3) melanin pigmentation and pigment-type switching, and (4) development of a novel therapeutic approach for malignant melanoma by elucidation of melanogenesis cascade.
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Affiliation(s)
- Tokimasa Hida
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo 060-8543, Hokkaido, Japan; (T.H.); (T.K.); (H.U.)
| | - Takafumi Kamiya
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo 060-8543, Hokkaido, Japan; (T.H.); (T.K.); (H.U.)
| | - Akinori Kawakami
- Cutaneous Biology Research Center, Department of Dermatology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA 02129, USA;
| | - Jiro Ogino
- Department of Pathology, JR Sapporo Hospital, Sapporo 060-0033, Hokkaido, Japan;
| | - Hitoshi Sohma
- Department of Biomedical Engineering, Sapporo Medical University School of Medicine, Sapporo 060-8556, Hokkaido, Japan;
| | - Hisashi Uhara
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo 060-8543, Hokkaido, Japan; (T.H.); (T.K.); (H.U.)
| | - Kowichi Jimbow
- Institute of Dermatology & Cutaneous Sciences, Sapporo 060-0042, Hokkaido, Japan
- Correspondence: ; Tel.: +81-11-887-8266
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124
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Faure L, Wang Y, Kastriti ME, Fontanet P, Cheung KKY, Petitpré C, Wu H, Sun LL, Runge K, Croci L, Landy MA, Lai HC, Consalez GG, de Chevigny A, Lallemend F, Adameyko I, Hadjab S. Single cell RNA sequencing identifies early diversity of sensory neurons forming via bi-potential intermediates. Nat Commun 2020; 11:4175. [PMID: 32826903 PMCID: PMC7442800 DOI: 10.1038/s41467-020-17929-4] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Accepted: 07/23/2020] [Indexed: 12/23/2022] Open
Abstract
Somatic sensation is defined by the existence of a diversity of primary sensory neurons with unique biological features and response profiles to external and internal stimuli. However, there is no coherent picture about how this diversity of cell states is transcriptionally generated. Here, we use deep single cell analysis to resolve fate splits and molecular biasing processes during sensory neurogenesis in mice. Our results identify a complex series of successive and specific transcriptional changes in post-mitotic neurons that delineate hierarchical regulatory states leading to the generation of the main sensory neuron classes. In addition, our analysis identifies previously undetected early gene modules expressed long before fate determination although being clearly associated with defined sensory subtypes. Overall, the early diversity of sensory neurons is generated through successive bi-potential intermediates in which synchronization of relevant gene modules and concurrent repression of competing fate programs precede cell fate stabilization and final commitment.
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Affiliation(s)
- Louis Faure
- Department of Molecular Neurosciences, Center for Brain Research, Medical University Vienna, 1090, Vienna, Austria
| | - Yiqiao Wang
- Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Maria Eleni Kastriti
- Department of Molecular Neurosciences, Center for Brain Research, Medical University Vienna, 1090, Vienna, Austria
| | - Paula Fontanet
- Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Kylie K Y Cheung
- Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Charles Petitpré
- Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Haohao Wu
- Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Lynn Linyu Sun
- Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Karen Runge
- INMED INSERM U1249, Aix-Marseille University, Marseille, France
| | - Laura Croci
- Università Vita-Salute San Raffaele, 20132, Milan, Italy
| | - Mark A Landy
- Department of Neuroscience, UT Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX, 75390, USA
| | - Helen C Lai
- Department of Neuroscience, UT Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX, 75390, USA
| | | | | | - François Lallemend
- Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden
- Ming-Wai Lau Centre for Reparative Medicine, Stockholm node, Karolinska Institutet, Stockholm, Sweden
| | - Igor Adameyko
- Department of Molecular Neurosciences, Center for Brain Research, Medical University Vienna, 1090, Vienna, Austria
- Department of Physiology and Pharmacology, Karolinska Institutet, 17177, Stockholm, Sweden
| | - Saida Hadjab
- Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden.
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Nagata M, Ono N, Ono W. Unveiling diversity of stem cells in dental pulp and apical papilla using mouse genetic models: a literature review. Cell Tissue Res 2020; 383:603-616. [PMID: 32803323 DOI: 10.1007/s00441-020-03271-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Accepted: 07/29/2020] [Indexed: 12/16/2022]
Abstract
The dental pulp, a non-mineralized connective tissue uniquely encased within the cavity of the tooth, provides a niche for diverse arrays of dental mesenchymal stem cells. Stem cells in the dental pulp, including dental pulp stem cells (DPSCs), stem cells from human exfoliated deciduous teeth (SHEDs) and stem cells from apical papilla (SCAPs), have been isolated from human tissues with an emphasis on their potential application to regenerative therapies. Recent studies utilizing mouse genetic models shed light on the identities of these mesenchymal progenitor cells derived from neural crest cells (NCCs) in their native conditions, particularly regarding how they contribute to homeostasis and repair of the dental tissue. The current concept is that at least two distinct niches for stem cells exist in the dental pulp, e.g., the perivascular niche and the perineural niche. The precise identities of these stem cells and their niches are now beginning to be unraveled thanks to sophisticated mouse genetic models, which lead to better understanding of the fundamental properties of stem cells in the dental pulp and the apical papilla in humans. The new knowledge will be highly instrumental for developing more effective stem cell-based regenerative therapies to repair teeth in the future.
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Affiliation(s)
- Mizuki Nagata
- Department of Orthodontics and Pediatric Dentistry, University of Michigan School of Dentistry, Ann Arbor, MI, 48109, USA
| | - Noriaki Ono
- Department of Orthodontics and Pediatric Dentistry, University of Michigan School of Dentistry, Ann Arbor, MI, 48109, USA
| | - Wanida Ono
- Department of Orthodontics and Pediatric Dentistry, University of Michigan School of Dentistry, Ann Arbor, MI, 48109, USA.
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Senczuk G, Guerra L, Mastrangelo S, Campobasso C, Zoubeyda K, Imane M, Marletta D, Kusza S, Karsli T, Gaouar SBS, Pilla F, Ciani E. Fifteen Shades of Grey: Combined Analysis of Genome-Wide SNP Data in Steppe and Mediterranean Grey Cattle Sheds New Light on the Molecular Basis of Coat Color. Genes (Basel) 2020; 11:genes11080932. [PMID: 32823527 PMCID: PMC7464420 DOI: 10.3390/genes11080932] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 07/02/2020] [Accepted: 07/07/2020] [Indexed: 12/20/2022] Open
Abstract
Coat color is among the most distinctive phenotypes in cattle. Worldwide, several breeds share peculiar coat color features such as the presence of a fawn pigmentation of the calf at birth, turning over time to grey, and sexual dichromatism. The aim of this study was to search for polymorphisms under differential selection by contrasting grey cattle breeds displaying the above phenotype with non-grey cattle breeds, and to identify the underlying genes. Using medium-density SNP array genotype data, a multi-cohort FST-outlier approach was adopted for a total of 60 pair-wise comparisons of the 15 grey with 4 non-grey cattle breeds (Angus, Limousin, Charolais, and Holstein), with the latter selected as representative of solid and piebald phenotypes, respectively. Overall, more than 50 candidate genes were detected; almost all were either directly or indirectly involved in pigmentation, and some of them were already known for their role in phenotypes related with hair graying in mammals. Notably, 17 relevant genes, including SDR16C5, MOS, SDCBP, and NSMAF, were located in a signal on BTA14 convergently observed in all the four considered scenarios. Overall, the key stages of pigmentation (melanocyte development, melanogenesis, and pigment trafficking/transfer) were all represented among the pleiotropic functions of the candidate genes, suggesting the complex nature of the grey phenotype in cattle.
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Affiliation(s)
- Gabriele Senczuk
- Dipartimento di Agricoltura, Ambiente e Alimenti, University of Molise, 86100 Campobasso, Italy; (G.S.); (F.P.)
| | - Lorenzo Guerra
- Dipartimento di Bioscienze, Biotecnologie e Biofarmaceutica, University of Bari, 70125 Bari, Italy; (L.G.); (C.C.)
| | - Salvatore Mastrangelo
- Dipartimento di Scienze Agrarie, Alimentari e Forestali, University of Palermo, 90128 Palermo, Italy;
| | - Claudia Campobasso
- Dipartimento di Bioscienze, Biotecnologie e Biofarmaceutica, University of Bari, 70125 Bari, Italy; (L.G.); (C.C.)
| | - Kaouadji Zoubeyda
- Department of Biology, University Abou Bekr Bélkaid, Tlemcen 13000, Algeria; (K.Z.); (M.I.); (S.B.S.G.)
| | - Meghelli Imane
- Department of Biology, University Abou Bekr Bélkaid, Tlemcen 13000, Algeria; (K.Z.); (M.I.); (S.B.S.G.)
| | - Donata Marletta
- Dipartimento di Agricoltura, Alimentazione e Ambiente, Università di Catania, 95123 Catania, Italy;
| | - Szilvia Kusza
- Animal Genetics Laboratory, University of Debrecen, 4032 Debrecen, Hungary;
| | - Taki Karsli
- Department of Animal Science, Akdeniz University, 07070 Antalya, Turkey;
| | | | - Fabio Pilla
- Dipartimento di Agricoltura, Ambiente e Alimenti, University of Molise, 86100 Campobasso, Italy; (G.S.); (F.P.)
| | - Elena Ciani
- Dipartimento di Bioscienze, Biotecnologie e Biofarmaceutica, University of Bari, 70125 Bari, Italy; (L.G.); (C.C.)
- Correspondence:
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Intrinsic Balance between ZEB Family Members Is Important for Melanocyte Homeostasis and Melanoma Progression. Cancers (Basel) 2020; 12:cancers12082248. [PMID: 32796736 PMCID: PMC7465899 DOI: 10.3390/cancers12082248] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 08/06/2020] [Accepted: 08/07/2020] [Indexed: 02/07/2023] Open
Abstract
It has become clear that cellular plasticity is a main driver of cancer therapy resistance. Consequently, there is a need to mechanistically identify the factors driving this process. The transcription factors of the zinc-finger E-box-binding homeobox family, consisting of ZEB1 and ZEB2, are notorious for their roles in epithelial-to-mesenchymal transition (EMT). However, in melanoma, an intrinsic balance between ZEB1 and ZEB2 seems to determine the cellular state by modulating the expression of the master regulator of melanocyte homeostasis, microphthalmia-associated transcription factor (MITF). ZEB2 drives MITF expression and is associated with a differentiated/proliferative melanoma cell state. On the other hand, ZEB1 is correlated with low MITF expression and a more invasive, stem cell-like and therapy-resistant cell state. This intrinsic balance between ZEB1 and ZEB2 could prove to be a promising therapeutic target for melanoma patients. In this review, we will summarise what is known on the functional mechanisms of these transcription factors. Moreover, we will look specifically at their roles during melanocyte-lineage development and homeostasis. Finally, we will overview the current literature on ZEB1 and ZEB2 in the melanoma context and link this to the 'phenotype-switching' model of melanoma cellular plasticity.
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128
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McMenamin PG, Shields GT, Seyed-Razavi Y, Kalirai H, Insall RH, Machesky LM, Coupland SE. Melanoblasts Populate the Mouse Choroid Earlier in Development Than Previously Described. Invest Ophthalmol Vis Sci 2020; 61:33. [PMID: 32797202 PMCID: PMC7441366 DOI: 10.1167/iovs.61.10.33] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Accepted: 07/14/2020] [Indexed: 11/24/2022] Open
Abstract
Purpose Human choroidal melanocytes become evident in the last trimester of development, but very little is known about them. To better understand normal and diseased choroidal melanocyte biology we examined their precursors, melanoblasts (MB), in mouse eyes during development, particularly their relation to the developing vasculature and immune cells. Methods Naïve B6(Cg)-Tyrc-2J/J albino mice were used between embryonic (E) day 15.5 and postnatal (P) day 8, with adult controls. Whole eyes, posterior segments, or dissected choroidal wholemounts were stained with antibodies against tyrosinase-related protein 2, ionized calcium binding adaptor molecule-1 or isolectin B4, and examined by confocal microscopy. Immunoreactive cell numbers in the choroid were quantified with Imaris. One-way ANOVA with Tukey's post hoc test assessed statistical significance. Results Small numbers of MB were present in the presumptive choroid at E15.5 and E18.5. The density significantly increased between E18.5 (381.4 ± 45.8 cells/mm2) and P0 (695.2 ± 87.1 cells/mm2; P = 0.032). In postnatal eyes MB increased in density and formed multiple layers beneath the choriocapillaris. MB in the periocular mesenchyme preceded the appearance of vascular structures at E15.5. Myeloid cells (Ionized calcium binding adaptor molecule-1-positive) were also present at high densities from this time, and attained adult-equivalent densities by P8 (556.4 ± 73.6 cells/mm2). Conclusions We demonstrate that choroidal MB and myeloid cells are both present at very early stages of mouse eye development (E15.5). Although MB and vascularization seemed to be unlinked early in choroidal development, they were closely associated at later stages. MB did not migrate into the choroid in waves, nor did they have a consistent relationship with nerves.
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Affiliation(s)
- Paul G. McMenamin
- Department of Anatomy and Developmental Biology, School of Biomedical Sciences, Faculty of Medicine, Nursing and Health Sciences, Monash University, Clayton, Victoria, Australia
| | - Graham T. Shields
- Liverpool Ocular Oncology Research Group, Department of Molecular and Clinical Cancer Medicine, Institute of Translational Medicine, University of Liverpool, Liverpool, United Kingdom
| | - Yashar Seyed-Razavi
- Department of Anatomy and Developmental Biology, School of Biomedical Sciences, Faculty of Medicine, Nursing and Health Sciences, Monash University, Clayton, Victoria, Australia
| | - Helen Kalirai
- Liverpool Ocular Oncology Research Group, Department of Molecular and Clinical Cancer Medicine, Institute of Translational Medicine, University of Liverpool, Liverpool, United Kingdom
- Liverpool Clinical Laboratories, Liverpool University Hospitals NHS Foundation Trust, Liverpool, United Kingdom
| | - Robert H. Insall
- CRUK Beatson Institute, Bearsden, University of Glasgow, Glasgow, G61 1BD, United Kingdom
- Institute of Cancer Sciences, University of Glasgow, Glasgow, United Kingdom
| | - Laura M. Machesky
- CRUK Beatson Institute, Bearsden, University of Glasgow, Glasgow, G61 1BD, United Kingdom
- Institute of Cancer Sciences, University of Glasgow, Glasgow, United Kingdom
| | - Sarah E. Coupland
- Liverpool Ocular Oncology Research Group, Department of Molecular and Clinical Cancer Medicine, Institute of Translational Medicine, University of Liverpool, Liverpool, United Kingdom
- Liverpool Clinical Laboratories, Liverpool University Hospitals NHS Foundation Trust, Liverpool, United Kingdom
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129
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Haage A, Wagner K, Deng W, Venkatesh B, Mitchell C, Goodwin K, Bogutz A, Lefebvre L, Van Raamsdonk CD, Tanentzapf G. Precise coordination of cell-ECM adhesion is essential for efficient melanoblast migration during development. Development 2020; 147:dev.184234. [PMID: 32580934 DOI: 10.1242/dev.184234] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Accepted: 06/08/2020] [Indexed: 01/07/2023]
Abstract
Melanoblasts disperse throughout the skin and populate hair follicles through long-range cell migration. During migration, cells undergo cycles of coordinated attachment and detachment from the extracellular matrix (ECM). Embryonic migration processes that require cell-ECM attachment are dependent on the integrin family of adhesion receptors. Precise regulation of integrin-mediated adhesion is important for many developmental migration events. However, the mechanisms that regulate integrin-mediated adhesion in vivo in melanoblasts are not well understood. Here, we show that autoinhibitory regulation of the integrin-associated adapter protein talin coordinates cell-ECM adhesion during melanoblast migration in vivo Specifically, an autoinhibition-defective talin mutant strengthens and stabilizes integrin-based adhesions in melanocytes, which impinges on their ability to migrate. Mice with defective talin autoinhibition exhibit delays in melanoblast migration and pigmentation defects. Our results show that coordinated integrin-mediated cell-ECM attachment is essential for melanoblast migration and that talin autoinhibition is an important mechanism for fine-tuning cell-ECM adhesion during cell migration in development.
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Affiliation(s)
- Amanda Haage
- Department of Biomedical Sciences, University of North Dakota, 1301 N Columbia Rd, Grand Forks, ND 58202, ND, USA
| | - Kelsey Wagner
- Department of Cellular and Physiological Sciences, 2350 Health Sciences Mall, University of British Columbia, Vancouver, BC, Canada
| | - Wenjun Deng
- Department of Cellular and Physiological Sciences, 2350 Health Sciences Mall, University of British Columbia, Vancouver, BC, Canada
| | - Bhavya Venkatesh
- Department of Cellular and Physiological Sciences, 2350 Health Sciences Mall, University of British Columbia, Vancouver, BC, Canada
| | - Caitlin Mitchell
- Department of Cellular and Physiological Sciences, 2350 Health Sciences Mall, University of British Columbia, Vancouver, BC, Canada
| | - Katharine Goodwin
- Lewis-Sigler Institute for Integrative Genomics, Princeton University, Princeton, NJ 08540, USA
| | - Aaron Bogutz
- Department of Medical Genetics, 2350 Health Sciences Mall, University of British Columbia, Vancouver, BC, V6T 1Z3, Canada
| | - Louis Lefebvre
- Department of Medical Genetics, 2350 Health Sciences Mall, University of British Columbia, Vancouver, BC, V6T 1Z3, Canada
| | - Catherine D Van Raamsdonk
- Department of Medical Genetics, 2350 Health Sciences Mall, University of British Columbia, Vancouver, BC, V6T 1Z3, Canada
| | - Guy Tanentzapf
- Department of Cellular and Physiological Sciences, 2350 Health Sciences Mall, University of British Columbia, Vancouver, BC, Canada
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130
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El-Nachef WN, Bronner ME. De novo enteric neurogenesis in post-embryonic zebrafish from Schwann cell precursors rather than resident cell types. Development 2020; 147:dev186619. [PMID: 32541008 PMCID: PMC7375481 DOI: 10.1242/dev.186619] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Accepted: 06/03/2020] [Indexed: 12/12/2022]
Abstract
The enteric nervous system (ENS) is essential for normal gastrointestinal function. Although the embryonic origin of enteric neurons from the neural crest is well established, conflicting evidence exists regarding postnatal enteric neurogenesis. Here, we address this by examining the origin of de novo neurogenesis in the post-embryonic zebrafish ENS. Although new neurons are added during growth and after injury, the larval intestine appears to lack resident neurogenic precursors or classical glia marked by sox10, plp1a, gfap or s100 Rather, lineage tracing with lipophilic dye or inducible Sox10-Cre suggests that post-embryonic enteric neurons arise from trunk neural crest-derived Schwann cell precursors that migrate from the spinal cord into the intestine. Furthermore, the 5-HT4 receptor agonist prucalopride increases enteric neurogenesis in normal development and after injury. Taken together, the results suggest that despite the lack of resident progenitors in the gut, post-embryonic enteric neurogenesis occurs via gut-extrinsic Schwann cell precursors during development and injury, and is promoted by serotonin receptor agonists. The absence of classical glia in the ENS further suggests that neural crest-derived enteric glia might have evolved after the teleost lineage.This article has an associated 'The people behind the papers' interview.
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Affiliation(s)
- Wael Noor El-Nachef
- Department of Medicine, Vatche and Tamar Manoukian Division of Digestive Diseases, University of California Los Angeles, Los Angeles, CA 90095, USA
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA 91125, USA
| | - Marianne E Bronner
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA 91125, USA
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131
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Abstract
Neurofibromatosis type I (NF1) is a debilitating inherited tumor syndrome affecting around 1 in 3000 people. Patients present with a variety of tumors caused by biallelic loss of the tumor suppressor neurofibromin (NF1), a negative regulator of Ras signaling. While the mechanism of tumor formation is similar in the majority of NF1 cases, the clinical spectrum of tumors can vary depending on spatiotemporal loss of heterozygosity of NF1 in cells derived from the neural crest during development. The hallmark lesions that give NF1 its namesake are neurofibromas, which are benign Schwann cell tumors composed of nervous and fibrous tissue. Neurofibromas can be found in the skin (cutaneous neurofibroma) or deeper in body near nerve plexuses (plexiform neurofibroma). While neurofibromas have been known to be Schwann cell tumors for many years, the exact timing and initiating cell has remained elusive. This has led to difficulties in developing animal models and successful therapies for NF1. A culmination of recent genetic studies has finally begun to shed light on the detailed cellular origins of neurofibromatosis. In this review, we will examine the hunt for neurofibroma tumor cells of origin through a historical lens, detailing the genetic systems used to delineate the source of plexiform and cutaneous neurofibromas. Through these novel findings, we can better understand the cellular, temporal, and developmental context during tumor initiation. By leveraging this data, we hope to uncover new therapeutic targets and mechanisms to treat NF1 patients.
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Affiliation(s)
- Stephen Li
- Department of Dermatology, University of Texas Southwestern Medical Center, Dallas.,Medical Scientist Training Program, University of Texas Southwestern Medical Center, Dallas.,Hamon Center for Regenerative Science and Medicine, University of Texas Southwestern Medical Center, Dallas
| | - Zhiguo Chen
- Department of Dermatology, University of Texas Southwestern Medical Center, Dallas
| | - Lu Q Le
- Department of Dermatology, University of Texas Southwestern Medical Center, Dallas.,Hamon Center for Regenerative Science and Medicine, University of Texas Southwestern Medical Center, Dallas.,Simmons Comprehensive Cancer Center, University of Texas Southwestern Medical Center, Dallas.,Neurofibromatosis Clinic, University of Texas Southwestern Medical Center, Dallas
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132
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Warren AL, Miller AD, de Lahunta A, Kortz G, Summers BA. Four Cases of the Melanotic Variant of Malignant Nerve Sheath Tumour: a Rare, Aggressive Neoplasm in Young Dogs with a Predilection for the Spinal Cord. J Comp Pathol 2020; 178:1-8. [PMID: 32800101 DOI: 10.1016/j.jcpa.2020.03.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Revised: 03/09/2020] [Accepted: 03/28/2020] [Indexed: 10/23/2022]
Abstract
Four cases of a rare melanotic variant of malignant nerve sheath tumour (MNST) in dogs are described. All four cases presented with neurological clinical signs due to multicentric, intradural, intra- and extraparenchymal neoplasms that surrounded the spinal and cranial nerves and infiltrated the adjacent spinal cord and brain. The dogs were young (3 months to 3 years of age), all were female and four different breeds were represented. Characteristic histological features were interweaving fascicles of spindle-shaped cells, sometimes with an architecture reminiscent of Antoni A and B patterns. Some spindle cells showed prominent cytoplasmic melanin pigmentation and such cells were positive by Masson-Fontana stain. Immunohistochemistry performed in three cases was positive for S100 and vimentin, strongly positive for melan A in the melanized cells and negative for glial fibrillary acidic protein and periaxin. Non-melanized cells did not express melan A. Transmission electron microscopy findings in one case were consistent with a peripheral nerve sheath tumour and demonstrated cytoplasmic pre-melanosomes and melanosomes. Melanotic variants of MNSTs are rare in animals with only a solitary report of two previous canine cases in the literature.
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Affiliation(s)
- A L Warren
- Department of Veterinary Clinical and Diagnostic Sciences, Faculty of Veterinary Medicine, University of Calgary, Calgary, Alberta, Canada.
| | - A D Miller
- Department of Biomedical Sciences, Section of Anatomic Pathology, Cornell University College of Veterinary Medicine, Ithaca, New York, USA
| | - A de Lahunta
- Department of Biomedical Sciences, Section of Anatomic Pathology, Cornell University College of Veterinary Medicine, Ithaca, New York, USA
| | - G Kortz
- VCA Sacramento Veterinary Referral Center, Sacramento, California, USA
| | - B A Summers
- Department of Biomedical Sciences, Section of Anatomic Pathology, Cornell University College of Veterinary Medicine, Ithaca, New York, USA
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133
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Cramer SF, Salgado CM, Reyes-Múgica M. A study of dermal melanophages in childhood nevi. Reassessing so-called "pigment incontinence". J Cutan Pathol 2020; 47:809-814. [PMID: 32314421 DOI: 10.1111/cup.13718] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 04/10/2020] [Accepted: 04/13/2020] [Indexed: 01/15/2023]
Abstract
In inflammatory dermatoses, dermal melanophages (MLP) are ascribed to "pigment incontinence," with melanin "dropping down" from the epidermis. Although this is analogous to the "dropping down" of melanocytic nevus cells (Abtropfung), MLP in ordinary nevi have not been systematically studied-so "pigment incontinence" may not apply to MLP in nevi. A total of 31 childhood nevi identified by pediatricians and family practitioners were evaluated for the distribution of MLP. We tested the hypothesis that a dermal origin of the melanin in MLP is more likely than dropping down from the epidermis. In our cohort, 90.3% (28/31) of childhood nevi had dermal MLP, a significantly higher frequency, compared to 31/60 ordinary adult nevi (P < 0.0001). Superficial dermis was the most common location (P < 0.001). However, only six specimens had MLP restricted to the superficial dermis, significantly less than predicted by the theory that melanin drops down from the epidermis (P < 0.00001). We also evaluated perivascular MLP, since nerves run together with vessels in neurovascular bundles (NVB), and it has been showed that precursors of melanocytes migrate from the neural crest to the skin as nerve sheath stem cells. Superficial NVB MLP correlated with deep NVB bundle MLP (P < 0.05), suggesting that NVB MLP represent "tombstones" for superficial and deep dermal nevus cells. Deep dermal, deep NVB, and deep periadnexal MLP may be valid biological criteria for diagnosis of congenital type (prenatal) nevi. Viewing prenatal nevi in children as a neurocristopathy fits a major principle of pediatric pathology: childhood diseases should be studied and understood based on what happens during tissue development.
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Affiliation(s)
- Stewart F Cramer
- Department of Pathology, Rochester General Hospital, University of Rochester School of Medicine, Rochester, New York, USA
| | - Cláudia M Salgado
- Department of Pathology, University of Pittsburgh School of Medicine, Division of Pediatric Pathology, UPMC Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Miguel Reyes-Múgica
- Department of Pathology, University of Pittsburgh School of Medicine, Division of Pediatric Pathology, UPMC Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania, USA
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134
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Kempfle JS, Luu NNC, Petrillo M, Al-Asad R, Zhang A, Edge ASB. Lin28 reprograms inner ear glia to a neuronal fate. Stem Cells 2020; 38:890-903. [PMID: 32246510 PMCID: PMC10908373 DOI: 10.1002/stem.3181] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Revised: 02/05/2020] [Accepted: 02/08/2020] [Indexed: 12/16/2022]
Abstract
Sensorineural hearing loss is irreversible and can be caused by loss of auditory neurons. Regeneration of neural cells from endogenous cells may offer a future tool to restore the auditory circuit and to enhance the performance of implantable hearing devices. Neurons and glial cells in the peripheral nervous system are closely related and originate from a common progenitor. Prior work in our lab indicated that in the early postnatal mouse inner ear, proteolipid protein 1 (Plp1) expressing glial cells could act as progenitor cells for neurons in vitro. Here, we used a transgenic mouse model to transiently overexpress Lin28, a neural stem cell regulator, in Plp1-positive glial cells. Lin28 promoted proliferation and conversion of auditory glial cells into neurons in vitro. To study the effects of Lin28 on endogenous glial cells after loss of auditory neurons in vivo, we produced a model of auditory neuropathy by selectively damaging auditory neurons with ouabain. After neural damage was confirmed by the auditory brainstem response, we briefly upregulated the Lin28 in Plp1-expressing inner ear glial cells. One month later, we analyzed the cochlea for neural marker expression by quantitative RT-PCR and immunohistochemistry. We found that transient Lin28 overexpression in Plp1-expressing glial cells induced expression of neural stem cell markers and subsequent conversion into neurons. This suggests the potential for inner ear glia to be converted into neurons as a regeneration therapy for neural replacement in auditory neuropathy.
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Affiliation(s)
- Judith S. Kempfle
- Department of Otolaryngology, Harvard Medical School, Boston, Massachusetts
- Eaton-Peabody Laboratory, Massachusetts Eye and Ear, Boston, Massachusetts
- University Department of Otolaryngology, Head and Neck Surgery, Tübingen, Germany
| | - Ngoc-Nhi C. Luu
- Department of Otolaryngology, Harvard Medical School, Boston, Massachusetts
- Eaton-Peabody Laboratory, Massachusetts Eye and Ear, Boston, Massachusetts
- University Department of Otolaryngology, Head and Neck Surgery, Zürich, Switzerland
| | - Marco Petrillo
- Department of Otolaryngology, Harvard Medical School, Boston, Massachusetts
- Eaton-Peabody Laboratory, Massachusetts Eye and Ear, Boston, Massachusetts
| | - Reef Al-Asad
- Department of Otolaryngology, Harvard Medical School, Boston, Massachusetts
- Eaton-Peabody Laboratory, Massachusetts Eye and Ear, Boston, Massachusetts
| | - Andrea Zhang
- Department of Otolaryngology, Harvard Medical School, Boston, Massachusetts
- Eaton-Peabody Laboratory, Massachusetts Eye and Ear, Boston, Massachusetts
| | - Albert S. B. Edge
- Department of Otolaryngology, Harvard Medical School, Boston, Massachusetts
- Eaton-Peabody Laboratory, Massachusetts Eye and Ear, Boston, Massachusetts
- Program in Speech and Hearing Bioscience and Technology, Harvard Medical School, Boston, Massachusetts
- Harvard Stem Cell Institute, Cambridge, Massachusetts
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135
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Abstract
Wild sheep and many primitive domesticated breeds have two coats: coarse hairs covering shorter, finer fibres. Both are shed annually. Exploitation of wool for apparel in the Bronze Age encouraged breeding for denser fleeces and continuously growing white fibres. The Merino is regarded as the culmination of this process. Archaeological discoveries, ancient images and parchment records portray this as an evolutionary progression, spanning millennia. However, examination of the fleeces from feral, two-coated and woolled sheep has revealed a ready facility of the follicle population to change from shedding to continuous growth and to revert from domesticated to primitive states. Modifications to coat structure, colour and composition have occurred in timeframes and to sheep population sizes that exclude the likelihood of variations arising from mutations and natural selection. The features are characteristic of the domestication phenotype: an assemblage of developmental, physiological, skeletal and hormonal modifications common to a wide variety of species under human control. The phenotypic similarities appeared to result from an accumulation of cryptic genetic changes early during vertebrate evolution. Because they did not affect fitness in the wild, the mutations were protected from adverse selection, becoming apparent only after exposure to a domestic environment. The neural crest, a transient embryonic cell population unique to vertebrates, has been implicated in the manifestations of the domesticated phenotype. This hypothesis is discussed with reference to the development of the wool follicle population and the particular roles of Notch pathway genes, culminating in the specific cell interactions that typify follicle initiation.
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136
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Saggini A, Dill D, Kleimann P, Kutzner H. Superficial dermal melanocytosis of the elderly: An exceptional occurrence? J Cutan Pathol 2020; 47:865-869. [PMID: 32388873 DOI: 10.1111/cup.13737] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 04/29/2020] [Accepted: 05/03/2020] [Indexed: 01/01/2023]
Abstract
The development of flat pigmented lesions on chronically sun-damaged (CSD) skin of the face may represent the clinical manifestation of a wide variety of hyperplastic/neoplastic melanocytic proliferations. We report the exceptional case of an acquired pigmented patch occurring on CSD skin, histopathologically characterized by diffuse hyperplasia of dendritic/spindled melanocytes in the superficial dermis within a widened band of actinic elastosis. This lesion was associated with a small focus of early invasive lentigo maligna melanoma (LMM). We show the melanocytic nature of the population of dermal pigmented cells by means of single and double immunohistochemical staining for melanocytic and histiocytic markers. The biologic significance of the focus of LMM within the hyperpigmented lesion (whether random collision phenomenon or causally related occurrence), as well as the pathogenesis of the whole dermal lesion are difficult to elucidate. Our case emphasizes the need for a better understanding of the pathophysiology of so-called dermal melanocytes.
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Affiliation(s)
| | - Dorothee Dill
- Department of Dermatology, Klinikum Lüdenscheid, Lüdenscheid, Germany
| | - Pia Kleimann
- Department of Dermatology, Venereology and Allergy, Goethe University Hospital, Frankfurt am Main, Germany
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137
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Gauthier Y, Almasi-Nasrabadi M, Cario-André M, Pain C, Rakhshan A, Ghalamkarpour F. Tacrolimus (FK506) ointment combined with Nb-UVB could activate both hair follicle (HF) and dermal melanocyte precursors in vitiligo: the first histopathological and clinical study. Arch Dermatol Res 2020; 313:383-388. [PMID: 32303824 DOI: 10.1007/s00403-020-02068-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2020] [Revised: 03/07/2020] [Accepted: 03/28/2020] [Indexed: 11/26/2022]
Abstract
Topical Tacrolimus, especially when combined with Nb-UVB, has been proven clinically to be effective in the treatment of vitiligo. However, no histological study has evaluated the repigmentation mechanism of tacrolimus ointment in combination therapy with Nb-UVB. In this study, the histological findings in patients receiving Nb-UVB were compared with those receiving topical tacrolimus combined with Nb-UVB. Twenty patients were recruited and received Nb-UVB treatment. The first ten patients were selected for the combination therapy and instructed to apply tacrolimus 0.1% ointment twice daily on the specified lesion of interest. The remaining ten patients did not receive any other topical treatments. Skin biopsy was performed at baseline from the depigmented area and 2-3 months post-treatment from the repigmented area. Biopsy specimens were stained with haematoxylin-eosin-safran (HES), Fontana Masson, HMB45, Melan A, MITF, SOX10 and Nestin. Clinically, in the combination therapy group, interfollicular repigmentation in addition to the perifollicular and marginal pattern was observed. Histologically, in the combination therapy group, besides the migration of melanocytes from the bulge of the hair follicle seen in the monotherapy group, for the first time, we observed dermal melanocyte precursors located in mid- and superficial dermis.
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Affiliation(s)
- Yvon Gauthier
- Vitiligo and Melasma Research Association, Bordeaux, France
| | - Mina Almasi-Nasrabadi
- Skin Research Center, Shohada-E Tajrish Hospital, Shahid Beheshti University of Medical Sciences, Shahrdari St, 1989934148, Tehran, Iran
| | | | | | - Azadeh Rakhshan
- Department of Pathology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Fariba Ghalamkarpour
- Skin Research Center, Shohada-E Tajrish Hospital, Shahid Beheshti University of Medical Sciences, Shahrdari St, 1989934148, Tehran, Iran.
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138
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Sierra R, Gómez Bustillo S, Kameneva P, Fiore EJ, Mazzone GL, Borda M, Blanco MV, Usuardi C, Furlan A, Ernfors P, Alaniz L, Montaner AD, Adameyko I, Aquino JB. Contribution of neural crest and GLAST + Wnt1 + bone marrow pericytes with liver fibrogenesis and/or regeneration. Liver Int 2020; 40:977-987. [PMID: 32011099 DOI: 10.1111/liv.14401] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Revised: 01/22/2020] [Accepted: 01/24/2020] [Indexed: 02/13/2023]
Abstract
BACKGROUND AND AIMS Liver fibrosis results from cycles of liver damage and scar formation. We herein aimed at analysing neural crest cells and/or bone marrow stromal cells contribution to the liver. METHODS Two liver fibrosis and one hepatectomy model were applied on double-transgenic loxP-Cre mouse lines. RESULTS Increased numbers of glia with more complex processes were found in fibrotic livers. During embryonic development, only few cells were traced in the liver and bone marrow, in a minor fraction of mice of different neural crest reporter strains analysed: therefore, a neural crest origin of such cells is doubtful. In the fibrotic liver, a significantly higher incidence of endothelial cells and hepatocyte-like cells expressing the reporter gene Tomato were found in Wnt1-Cre-Tom and GLAST-CreERT2-Tom mice. Consistently, during early fibrogenesis stromal Wnt1-traced cells, with progenitor (CFU-F) properties, get likely mobilized to peripheral blood. Circulating adult Wnt1-traced cells are stromal cells and lack from the expression of other bone marrow and endothelial progenitor cells markers. Furthermore, in a 70% hepatectomy model GLAST+ Wnt1-traced pericytes were found to be mobilized from the bone marrow and the incidence of GLAST-traced hepatocyte-like cells was increased. Finally, GLAST-traced hepatocyte like-cells were found to maintain the expression of stromal markers. CONCLUSIONS Our data suggest a gliosis process during liver fibrogenesis. While neural crest cells probably do not contribute with other liver cell types than glia, GLAST+ Wnt1-traced bone marrow pericytes are likely a source of endothelial and hepatocyte-like cells after liver injury and do not contribute to scarring.
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Affiliation(s)
- Romina Sierra
- Developmental Biology and Regenerative Medicine Lab, IIMT CONICET-Universidad Austral, Pilar, Buenos Aires, Argentina
| | - Sofía Gómez Bustillo
- Instituto de Ciencia y Tecnología Dr. César Milstein, Fundación Pablo Cassará, Buenos Aires, Argentina
| | - Polina Kameneva
- Developmental Biology and Regenerative Medicine Group, FyFa, Karolinska Institutet, Stockholm, Sweden
| | - Esteban J Fiore
- Gene Therapy Lab, IIMT CONICET-Universidad Austral, Pilar, Buenos Aires, Argentina.,CONICET (Consejo Nacional de Investigaciones Científicas y Técnicas), Pilar, Argentina
| | - Graciela L Mazzone
- Developmental Biology and Regenerative Medicine Lab, IIMT CONICET-Universidad Austral, Pilar, Buenos Aires, Argentina.,CONICET (Consejo Nacional de Investigaciones Científicas y Técnicas), Pilar, Argentina
| | - Maximiliano Borda
- Developmental Biology and Regenerative Medicine Lab, IIMT CONICET-Universidad Austral, Pilar, Buenos Aires, Argentina
| | - María V Blanco
- Developmental Biology and Regenerative Medicine Lab, IIMT CONICET-Universidad Austral, Pilar, Buenos Aires, Argentina
| | - Chiara Usuardi
- Developmental Biology and Regenerative Medicine Lab, IIMT CONICET-Universidad Austral, Pilar, Buenos Aires, Argentina
| | - Alessandro Furlan
- Unit of Molecular Neurobiology, MBB, Karolinska Institutet, Stockholm, Sweden
| | - Patrik Ernfors
- Unit of Molecular Neurobiology, MBB, Karolinska Institutet, Stockholm, Sweden
| | - Laura Alaniz
- CONICET (Consejo Nacional de Investigaciones Científicas y Técnicas), Pilar, Argentina.,CIT NOBA, UNNOBA, Junín, Buenos Aires, Argentina
| | - Alejandro D Montaner
- Instituto de Ciencia y Tecnología Dr. César Milstein, Fundación Pablo Cassará, Buenos Aires, Argentina.,CONICET (Consejo Nacional de Investigaciones Científicas y Técnicas), Pilar, Argentina
| | - Igor Adameyko
- Developmental Biology and Regenerative Medicine Group, FyFa, Karolinska Institutet, Stockholm, Sweden
| | - Jorge B Aquino
- Developmental Biology and Regenerative Medicine Lab, IIMT CONICET-Universidad Austral, Pilar, Buenos Aires, Argentina.,CONICET (Consejo Nacional de Investigaciones Científicas y Técnicas), Pilar, Argentina
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139
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Shi X, Mao J, Liu Y. Pulp stem cells derived from human permanent and deciduous teeth: Biological characteristics and therapeutic applications. Stem Cells Transl Med 2020; 9:445-464. [PMID: 31943813 PMCID: PMC7103623 DOI: 10.1002/sctm.19-0398] [Citation(s) in RCA: 119] [Impact Index Per Article: 29.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Accepted: 12/27/2019] [Indexed: 12/13/2022] Open
Abstract
Human pulp stem cells (PSCs) include dental pulp stem cells (DPSCs) isolated from dental pulp tissues of human extracted permanent teeth and stem cells from human exfoliated deciduous teeth (SHED). Depending on their multipotency and sensitivity to local paracrine activity, DPSCs and SHED exert therapeutic applications at multiple levels beyond the scope of the stomatognathic system. This review is specifically concentrated on PSC-updated biological characteristics and their promising therapeutic applications in (pre)clinical practice. Biologically, distinguished from conventional mesenchymal stem cell markers in vitro, NG2, Gli1, and Celsr1 have been evidenced as PSC markers in vivo. Both perivascular cells and glial cells account for PSC origin. Therapeutically, endodontic regeneration is where PSCs hold the most promises, attributable of PSCs' robust angiogenic, neurogenic, and odontogenic capabilities. More recently, the interplay between cell homing and liberated growth factors from dentin matrix has endowed a novel approach for pulp-dentin complex regeneration. In addition, PSC transplantation for extraoral tissue repair and regeneration has achieved immense progress, following their multipotential differentiation and paracrine mechanism. Accordingly, PSC banking is undergoing extensively with the intent of advancing tissue engineering, disease remodeling, and (pre)clinical treatments.
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Affiliation(s)
- Xin Shi
- Center of Stomatology, Tongji Hospital of Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanPeople's Republic of China
| | - Jing Mao
- Center of Stomatology, Tongji Hospital of Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanPeople's Republic of China
| | - Yan Liu
- Laboratory of Biomimetic Nanomaterials, Department of OrthodonticsPeking University School and Hospital of StomatologyBeijingPeople's Republic of China
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140
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Raja DA, Subramaniam Y, Aggarwal A, Gotherwal V, Babu A, Tanwar J, Motiani RK, Sivasubbu S, Gokhale RS, Natarajan VT. Histone variant dictates fate biasing of neural crest cells to melanocyte lineage. Development 2020; 147:dev.182576. [PMID: 32098766 DOI: 10.1242/dev.182576] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Accepted: 01/24/2020] [Indexed: 11/20/2022]
Abstract
In the neural crest lineage, progressive fate restriction and stem cell assignment are crucial for both development and regeneration. Whereas fate commitment events have distinct transcriptional footprints, fate biasing is often transitory and metastable, and is thought to be moulded by epigenetic programmes. Therefore, the molecular basis of specification is difficult to define. In this study, we established a role for a histone variant, H2a.z.2, in specification of the melanocyte lineage from multipotent neural crest cells. H2a.z.2 silencing reduces the number of melanocyte precursors in developing zebrafish embryos and from mouse embryonic stem cells in vitro We demonstrate that this histone variant occupies nucleosomes in the promoter of the key melanocyte determinant mitf, and enhances its induction. CRISPR/Cas9-based targeted mutagenesis of this gene in zebrafish drastically reduces adult melanocytes, as well as their regeneration. Thereby, our study establishes the role of a histone variant upstream of the core gene regulatory network in the neural crest lineage. This epigenetic mark is a key determinant of cell fate and facilitates gene activation by external instructive signals, thereby establishing melanocyte fate identity.
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Affiliation(s)
- Desingu Ayyappa Raja
- Pigment Cell Biology Group, CSIR-Institute of Genomics and Integrative Biology, Mathura Road, New Delhi, 110025, India.,Academy of Scientific and Innovative Research, Kamla Nehru Nagar, Ghaziabad, Uttar Pradesh, 201002, India
| | - Yogaspoorthi Subramaniam
- Pigment Cell Biology Group, CSIR-Institute of Genomics and Integrative Biology, Mathura Road, New Delhi, 110025, India.,Academy of Scientific and Innovative Research, Kamla Nehru Nagar, Ghaziabad, Uttar Pradesh, 201002, India
| | - Ayush Aggarwal
- Pigment Cell Biology Group, CSIR-Institute of Genomics and Integrative Biology, Mathura Road, New Delhi, 110025, India.,Academy of Scientific and Innovative Research, Kamla Nehru Nagar, Ghaziabad, Uttar Pradesh, 201002, India
| | - Vishvabandhu Gotherwal
- Pigment Cell Biology Group, CSIR-Institute of Genomics and Integrative Biology, Mathura Road, New Delhi, 110025, India.,Academy of Scientific and Innovative Research, Kamla Nehru Nagar, Ghaziabad, Uttar Pradesh, 201002, India
| | - Aswini Babu
- Pigment Cell Biology Group, CSIR-Institute of Genomics and Integrative Biology, Mathura Road, New Delhi, 110025, India
| | - Jyoti Tanwar
- Pigment Cell Biology Group, CSIR-Institute of Genomics and Integrative Biology, Mathura Road, New Delhi, 110025, India.,Academy of Scientific and Innovative Research, Kamla Nehru Nagar, Ghaziabad, Uttar Pradesh, 201002, India
| | - Rajender K Motiani
- Pigment Cell Biology Group, CSIR-Institute of Genomics and Integrative Biology, Mathura Road, New Delhi, 110025, India
| | - Sridhar Sivasubbu
- Pigment Cell Biology Group, CSIR-Institute of Genomics and Integrative Biology, Mathura Road, New Delhi, 110025, India
| | - Rajesh S Gokhale
- Pigment Cell Biology Group, CSIR-Institute of Genomics and Integrative Biology, Mathura Road, New Delhi, 110025, India
| | - Vivek T Natarajan
- Pigment Cell Biology Group, CSIR-Institute of Genomics and Integrative Biology, Mathura Road, New Delhi, 110025, India .,Academy of Scientific and Innovative Research, Kamla Nehru Nagar, Ghaziabad, Uttar Pradesh, 201002, India
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141
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Spectrum of Melanocytic Proliferation/Differentiation in a Large Series of Cutaneous Neurofibromas: An Under-Recognized Histopathologic Phenomenon and Potential Clue for Neurofibromatosis Type 1. Am J Dermatopathol 2020; 42:165-172. [DOI: 10.1097/dad.0000000000001512] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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142
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Scriba LD, Bornstein SR, Santambrogio A, Mueller G, Huebner A, Hauer J, Schedl A, Wielockx B, Eisenhofer G, Andoniadou CL, Steenblock C. Cancer Stem Cells in Pheochromocytoma and Paraganglioma. Front Endocrinol (Lausanne) 2020; 11:79. [PMID: 32158431 PMCID: PMC7051940 DOI: 10.3389/fendo.2020.00079] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Accepted: 02/06/2020] [Indexed: 12/17/2022] Open
Abstract
Pheochromocytoma (PCC) and paraganglioma (PGL) are rare neuroendocrine tumors associated with high cardiovascular morbidity and variable risk of malignancy. The current therapy of choice is surgical resection. Nevertheless, PCCs/PGLs are associated with a lifelong risk of tumor persistence or recurrence. A high rate of germline or somatic mutations in numerous genes has been found in these tumors. For some, the tumorigenic processes are initiated during embryogenesis. Such tumors carry gene mutations leading to pseudohypoxic phenotypes and show more immature characteristics than other chromaffin cell tumors; they are also often multifocal or metastatic and occur at an early age, often during childhood. Cancer stem cells (CSCs) are cells with an inherent ability of self-renewal, de-differentiation, and capacity to initiate and maintain malignant tumor growth. Targeting CSCs to inhibit cancer progression has become an attractive anti-cancer therapeutic strategy. Despite progress for this strategy for solid tumors such as neuroblastoma, brain, breast, and colon cancers, no substantial advance has been made employing similar strategies in PCCs/PGLs. In the current review, we discuss findings related to the identification of normal chromaffin stem cells and CSCs, pathways involved in regulating the development of CSCs, and the importance of the stem cell niche in development and maintenance of CSCs in PCCs/PGLs. Additionally, we examine the development and feasibility of novel CSC-targeted therapeutic strategies aimed at eradicating especially recurrent and metastatic tumors.
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Affiliation(s)
- Laura D. Scriba
- Department of Internal Medicine III, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Stefan R. Bornstein
- Department of Internal Medicine III, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
- Diabetes and Nutritional Sciences Division, King's College London, London, United Kingdom
| | - Alice Santambrogio
- Department of Internal Medicine III, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
- Centre for Craniofacial and Regenerative Biology, King's College London, London, United Kingdom
| | - Gregor Mueller
- Department of Internal Medicine III, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Angela Huebner
- Children's Hospital, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Julia Hauer
- Department of Pediatrics, Pediatric Hematology and Oncology, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | | | - Ben Wielockx
- Institute of Clinical Chemistry, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Graeme Eisenhofer
- Department of Internal Medicine III, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
- Institute of Clinical Chemistry, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Cynthia L. Andoniadou
- Department of Internal Medicine III, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
- Centre for Craniofacial and Regenerative Biology, King's College London, London, United Kingdom
| | - Charlotte Steenblock
- Department of Internal Medicine III, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
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143
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144
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Belote RL, Simon SM. Ca2+ transients in melanocyte dendrites and dendritic spine-like structures evoked by cell-to-cell signaling. J Cell Biol 2019; 219:132739. [PMID: 31821412 PMCID: PMC7039208 DOI: 10.1083/jcb.201902014] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2019] [Revised: 09/19/2019] [Accepted: 10/25/2019] [Indexed: 01/21/2023] Open
Abstract
Melanocytes are the neural crest-derived pigment-producing cells of the skin that possess dendrites. Yet little is known about how melanocyte dendrites receive and process information from neighboring cells. Here, using a co-culture system to interrogate the interaction between melanocyte dendrites and keratinocytes, we show that signals from neighboring keratinocytes trigger local compartmentalized Ca2+ transients within the melanocyte dendrites. The localized dendritic Ca2+ transients could be triggered by two keratinocyte-secreted factors, endothelin and acetylcholine, which acted via specific melanocyte receptors. Furthermore, compartmentalized Ca2+ transients were also generated on discrete dendritic spine-like structures on the melanocytes. These spines were also present in intact human skin. Our findings provide insights into how melanocyte dendrites communicate with neighboring cells and offer a new model system for studying compartmentalized signaling in dendritic structures.
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145
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Patterson LB, Parichy DM. Zebrafish Pigment Pattern Formation: Insights into the Development and Evolution of Adult Form. Annu Rev Genet 2019; 53:505-530. [DOI: 10.1146/annurev-genet-112618-043741] [Citation(s) in RCA: 66] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Vertebrate pigment patterns are diverse and fascinating adult traits that allow animals to recognize conspecifics, attract mates, and avoid predators. Pigment patterns in fish are among the most amenable traits for studying the cellular basis of adult form, as the cells that produce diverse patterns are readily visible in the skin during development. The genetic basis of pigment pattern development has been most studied in the zebrafish, Danio rerio. Zebrafish adults have alternating dark and light horizontal stripes, resulting from the precise arrangement of three main classes of pigment cells: black melanophores, yellow xanthophores, and iridescent iridophores. The coordination of adult pigment cell lineage specification and differentiation with specific cellular interactions and morphogenetic behaviors is necessary for stripe development. Besides providing a nice example of pattern formation responsible for an adult trait of zebrafish, stripe-forming mechanisms also provide a conceptual framework for posing testable hypotheses about pattern diversification more broadly. Here, we summarize what is known about lineages and molecular interactions required for pattern formation in zebrafish, we review some of what is known about pattern diversification in Danio, and we speculate on how patterns in more distant teleosts may have evolved to produce a stunningly diverse array of patterns in nature.
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Affiliation(s)
| | - David M. Parichy
- Department of Biology and Department of Cell Biology, University of Virginia, Charlottesville, Virginia 22903, USA
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146
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Carbone A, Persechino F, Paolino G, Cota C, Piemonte P, Franceschini C, Eibenschutz L, Ferrari A, Buccini P, Frascione P, Calvieri S, Ardigò M. Enlarging melanocytic lesions with peripheral globular pattern: a dermoscopic and confocal microscopy study. Ital J Dermatol Venerol 2019; 156:467-472. [PMID: 31760729 DOI: 10.23736/s2784-8671.19.06471-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND Enlarging melanocytic lesions with peripheral globular pattern (EMLPGP) are a pitfall in dermoscopy. Our aim was to evaluate the meaning of EMLPGP and to assess the use of dermoscopy and reflectance confocal microscopy (RCM) in order to improve the clinical management of this subtype of melanocytic lesions. METHODS A total of 135 EMLPGP were recruited and, accordingly to the dermoscopy features, were removed; later, an expert dermoscopist reviewed the lesions blinded to histology. Moreover, a subgroup of 63 lesions who underwent also to RCM, were reviewed by an expert confocalist. RESULTS Patients had a median age of 41 years old and a female prevalence (61.5%). The main anatomic site was the trunk (86%). Histology of the 135 excised EMLPGP disclosed 116 nevi (86%; P<0.0001) and 19 melanomas (14%). On dermoscopy, statistical significance was detected for small globules that were observed in 106 cases (78.5%; P<0.0001), while globules distribution and color did not impact the diagnosis prediction, as well as age, sex or any other patient profile. Considering the RCM, atypical cytology and irregular architecture were detected in 100% of melanomas (P<0.0001). CONCLUSIONS Our study shows that EMLPGPs are detectable in every age and can be a pitfall in especially in high risk patients with an over-excision of lesions. The presence of peripheral globules should be evaluated considering the overall dermoscopic features. RCM can contribute significantly in the management of lesions trough the detection of cyto-architectural atypia. Therefore, RCM in combination with dermoscopy can optimize the reduction of harmless lesions.
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Affiliation(s)
- Anna Carbone
- Oncologic and Preventative Dermatology Unit, San Gallicano Dermatological Institute, IRCCS, Rome, Italy -
| | - Flavia Persechino
- Oncologic and Preventative Dermatology Unit, San Gallicano Dermatological Institute, IRCCS, Rome, Italy.,Department of Clinical and Molecular Medicine, Sapienza University, Rome, Italy
| | - Giovanni Paolino
- Department of Dermatology and Cosmetology, IRCCS San Raffaele Hospital, Milan, Italy.,Dermatology Clinic, Sapienza University, Rome, Italy
| | - Carlo Cota
- Dermatopathology Research Unit, San Gallicano Dermatological Institute, IRCCS, Rome, Italy
| | - Paolo Piemonte
- Oncologic and Preventative Dermatology Unit, San Gallicano Dermatological Institute, IRCCS, Rome, Italy
| | - Chiara Franceschini
- Rare Disease Unit, San Gallicano Dermatological Institute, IRCCS, Rome, Italy
| | - Laura Eibenschutz
- Oncologic and Preventative Dermatology Unit, San Gallicano Dermatological Institute, IRCCS, Rome, Italy
| | - Angela Ferrari
- Oncologic and Preventative Dermatology Unit, San Gallicano Dermatological Institute, IRCCS, Rome, Italy
| | - Pierluigi Buccini
- Oncologic and Preventative Dermatology Unit, San Gallicano Dermatological Institute, IRCCS, Rome, Italy
| | - Pasquale Frascione
- Oncologic and Preventative Dermatology Unit, San Gallicano Dermatological Institute, IRCCS, Rome, Italy
| | | | - Marco Ardigò
- Rare Disease Unit, San Gallicano Dermatological Institute, IRCCS, Rome, Italy
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147
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Urtatiz O, Cook C, Huang JLY, Yeh I, Van Raamsdonk CD. GNAQ Q209L expression initiated in multipotent neural crest cells drives aggressive melanoma of the central nervous system. Pigment Cell Melanoma Res 2019; 33:96-111. [PMID: 31680437 DOI: 10.1111/pcmr.12843] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Revised: 10/08/2019] [Accepted: 10/31/2019] [Indexed: 12/13/2022]
Abstract
Primary leptomeningeal melanocytic neoplasms represent a spectrum of rare tumors originating from melanocytes of the leptomeninges, which are the inner two membranes that protect the central nervous system. Like other non-epithelial melanocytic lesions, they bear frequent oncogenic mutations in the heterotrimeric G protein alpha subunits, GNAQ or GNA11. In this study, we used Plp1-creERT to force the expression of oncogenic GNAQQ209L in the multipotent neural crest cells of the ventro-medial developmental pathway, beginning prior to melanocyte cell differentiation. We found that this produces leptomeningeal melanocytic neoplasms, including cranial melanocytomas, spinal melanocytomas, and spinal melanomas, in addition to blue nevus-like lesions in the dermis. GNAQQ209L drove different phenotypes depending upon when during embryogenesis (E9.5, E10.5, or E11.5) it was induced by tamoxifen and which Cre driver (Plp1-creERT, Tyr-creERT2 , or Mitf-cre) was used. Given these differences, we propose that melanocytes go through temporary phases where they become sensitive to the oncogenic effects of GNAQQ209L . R26-fs-GNAQQ209L ; Plp1-creERT mice will be useful for defining biomarkers for potentially aggressive leptomeningeal melanocytomas and for developing new therapeutics for advanced disease.
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Affiliation(s)
- Oscar Urtatiz
- Department of Medical Genetics, Life Sciences Institute, University of British Columbia, Vancouver, BC, Canada
| | - Courtney Cook
- Department of Medical Genetics, Life Sciences Institute, University of British Columbia, Vancouver, BC, Canada
| | - Jenny L-Y Huang
- Department of Medical Genetics, Life Sciences Institute, University of British Columbia, Vancouver, BC, Canada
| | - Iwei Yeh
- Departments of Dermatology and Pathology, University of California at San Francisco, San Francisco, CA, USA
| | - Catherine D Van Raamsdonk
- Department of Medical Genetics, Life Sciences Institute, University of British Columbia, Vancouver, BC, Canada
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148
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Mehrotra P, Tseropoulos G, Bronner ME, Andreadis ST. Adult tissue-derived neural crest-like stem cells: Sources, regulatory networks, and translational potential. Stem Cells Transl Med 2019; 9:328-341. [PMID: 31738018 PMCID: PMC7031649 DOI: 10.1002/sctm.19-0173] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Revised: 10/22/2019] [Accepted: 10/25/2019] [Indexed: 12/15/2022] Open
Abstract
Neural crest (NC) cells are a multipotent stem cell population that give rise to a diverse array of cell types in the body, including peripheral neurons, Schwann cells (SC), craniofacial cartilage and bone, smooth muscle cells, and melanocytes. NC formation and differentiation into specific lineages takes place in response to a set of highly regulated signaling and transcriptional events within the neural plate border. Premigratory NC cells initially are contained within the dorsal neural tube from which they subsequently emigrate, migrating to often distant sites in the periphery. Following their migration and differentiation, some NC‐like cells persist in adult tissues in a nascent multipotent state, making them potential candidates for autologous cell therapy. This review discusses the gene regulatory network responsible for NC development and maintenance of multipotency. We summarize the genes and signaling pathways that have been implicated in the differentiation of a postmigratory NC into mature myelinating SC. We elaborate on the signals and transcription factors involved in the acquisition of immature SC fate, axonal sorting of unmyelinated neuronal axons, and finally the path toward mature myelinating SC, which envelope axons within myelin sheaths, facilitating electrical signal propagation. The gene regulatory events guiding development of SC in vivo provides insights into means for differentiating NC‐like cells from adult human tissues into functional SC, which have the potential to provide autologous cell sources for the treatment of demyelinating and neurodegenerative disorders.
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Affiliation(s)
- Pihu Mehrotra
- Department of Chemical and Biological Engineering, University at Buffalo, Buffalo, New York
| | - Georgios Tseropoulos
- Department of Chemical and Biological Engineering, University at Buffalo, Buffalo, New York
| | - Marianne E Bronner
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, California
| | - Stelios T Andreadis
- Department of Chemical and Biological Engineering, University at Buffalo, Buffalo, New York.,Center of Excellence in Bioinformatics and Life Sciences, Buffalo, New York.,Department of Biomedical Engineering, University at Buffalo, Buffalo, New York
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149
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Mariniello K, Ruiz-Babot G, McGaugh EC, Nicholson JG, Gualtieri A, Gaston-Massuet C, Nostro MC, Guasti L. Stem Cells, Self-Renewal, and Lineage Commitment in the Endocrine System. Front Endocrinol (Lausanne) 2019; 10:772. [PMID: 31781041 PMCID: PMC6856655 DOI: 10.3389/fendo.2019.00772] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Accepted: 10/23/2019] [Indexed: 12/15/2022] Open
Abstract
The endocrine system coordinates a wide array of body functions mainly through secretion of hormones and their actions on target tissues. Over the last decades, a collective effort between developmental biologists, geneticists, and stem cell biologists has generated a wealth of knowledge related to the contribution of stem/progenitor cells to both organogenesis and self-renewal of endocrine organs. This review provides an up-to-date and comprehensive overview of the role of tissue stem cells in the development and self-renewal of endocrine organs. Pathways governing crucial steps in both development and stemness maintenance, and that are known to be frequently altered in a wide array of endocrine disorders, including cancer, are also described. Crucially, this plethora of information is being channeled into the development of potential new cell-based treatment modalities for endocrine-related illnesses, some of which have made it through clinical trials.
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Affiliation(s)
- Katia Mariniello
- Centre for Endocrinology, William Harvey Research Institute, Bart's and the London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom
| | - Gerard Ruiz-Babot
- Division of Endocrinology, Boston Children's Hospital, Boston, MA, United States
- Harvard Stem Cell Institute, Cambridge, MA, United States
| | - Emily C. McGaugh
- McEwen Stem Cell Institute, University Health Network, Toronto, ON, Canada
- Department of Physiology, University of Toronto, Toronto, ON, Canada
| | - James G. Nicholson
- Centre for Endocrinology, William Harvey Research Institute, Bart's and the London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom
| | - Angelica Gualtieri
- Centre for Endocrinology, William Harvey Research Institute, Bart's and the London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom
| | - Carles Gaston-Massuet
- Centre for Endocrinology, William Harvey Research Institute, Bart's and the London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom
| | - Maria Cristina Nostro
- McEwen Stem Cell Institute, University Health Network, Toronto, ON, Canada
- Department of Physiology, University of Toronto, Toronto, ON, Canada
| | - Leonardo Guasti
- Centre for Endocrinology, William Harvey Research Institute, Bart's and the London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom
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150
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Kastriti ME, Stratigi A, Mariatos D, Theodosiou M, Savvaki M, Kavkova M, Theodorakis K, Vidaki M, Zikmund T, Kaiser J, Adameyko I, Karagogeos D. Ablation of CNTN2+ Pyramidal Neurons During Development Results in Defects in Neocortical Size and Axonal Tract Formation. Front Cell Neurosci 2019; 13:454. [PMID: 31749685 PMCID: PMC6844266 DOI: 10.3389/fncel.2019.00454] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Accepted: 09/23/2019] [Indexed: 01/22/2023] Open
Abstract
Corticothalamic axons express Contactin-2 (CNTN2/TAG-1), a neuronal recognition molecule of the immunoglobulin superfamily involved in neurogenesis, neurite outgrowth, and fasciculation. TAG-1, which is expressed transiently by cortical pyramidal neurons during embryonic development, has been shown to be fundamental for axonal recognition, cellular migration, and neuronal proliferation in the developing cortex. Although Tag-1−/− mice do not exhibit any obvious defects in the corticofugal system, the role of TAG-1+ neurons during the development of the cortex remains elusive. We have generated a mouse model expressing EGFP under the Tag-1 promoter and encompassing the coding sequence of Diptheria Toxin subunit A (DTA) under quiescence with no effect on the expression of endogenous Tag-1. We show that while the line recapitulates the expression pattern of the molecule, it highlights an extended expression in the forebrain, including multiple axonal tracts and neuronal populations, both spatially and temporally. Crossing these mice to the Emx1-Cre strain, we ablated the vast majority of TAG-1+ cortical neurons. Among the observed defects were a significantly smaller cortex, a reduction of corticothalamic axons as well as callosal and commissural defects. Such defects are common in neurodevelopmental disorders, thus this mouse could serve as a useful model to study physiological and pathophysiological cortical development.
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Affiliation(s)
- Maria Eleni Kastriti
- Department of Basic Science, Faculty of Medicine, University of Crete, Heraklion, Greece.,Foundation for Research and Technology, Institute of Molecular Biology and Biotechnology, Heraklion, Greece.,Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden.,Center for Brain Research, Medical University Vienna, Vienna, Austria
| | - Aikaterini Stratigi
- Department of Basic Science, Faculty of Medicine, University of Crete, Heraklion, Greece.,Foundation for Research and Technology, Institute of Molecular Biology and Biotechnology, Heraklion, Greece.,Laboratory of Neurophysiology, Université Libre de Bruxelles, UNI, Brussels, Belgium
| | - Dimitris Mariatos
- Department of Basic Science, Faculty of Medicine, University of Crete, Heraklion, Greece.,Foundation for Research and Technology, Institute of Molecular Biology and Biotechnology, Heraklion, Greece
| | - Marina Theodosiou
- Department of Basic Science, Faculty of Medicine, University of Crete, Heraklion, Greece.,Foundation for Research and Technology, Institute of Molecular Biology and Biotechnology, Heraklion, Greece.,Department of Molecular Medicine, Max Planck Institute of Biochemistry, Martinsried, Germany
| | - Maria Savvaki
- Department of Basic Science, Faculty of Medicine, University of Crete, Heraklion, Greece.,Foundation for Research and Technology, Institute of Molecular Biology and Biotechnology, Heraklion, Greece
| | - Michaela Kavkova
- CEITEC-Central European Institute of Technology, Brno University of Technology, Brno, Czechia
| | - Kostas Theodorakis
- Department of Basic Science, Faculty of Medicine, University of Crete, Heraklion, Greece.,Foundation for Research and Technology, Institute of Molecular Biology and Biotechnology, Heraklion, Greece
| | - Marina Vidaki
- Department of Basic Science, Faculty of Medicine, University of Crete, Heraklion, Greece.,Foundation for Research and Technology, Institute of Molecular Biology and Biotechnology, Heraklion, Greece.,The Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, United States.,Department of Biology, Massachusetts Institute of Technology, Cambridge, MA, United States
| | - Tomas Zikmund
- CEITEC-Central European Institute of Technology, Brno University of Technology, Brno, Czechia
| | - Jozef Kaiser
- CEITEC-Central European Institute of Technology, Brno University of Technology, Brno, Czechia
| | - Igor Adameyko
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden.,Center for Brain Research, Medical University Vienna, Vienna, Austria
| | - Domna Karagogeos
- Department of Basic Science, Faculty of Medicine, University of Crete, Heraklion, Greece.,Foundation for Research and Technology, Institute of Molecular Biology and Biotechnology, Heraklion, Greece
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