1
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Nayak MK, Mishra B, Levejoseph S, Garg A, Sarma K, Sahoo B, Tripathi M, Gaikwad SB. Emerging insights into cephalic neural crest disorders: A single center experience. J Clin Imaging Sci 2024; 14:3. [PMID: 38469176 PMCID: PMC10927042 DOI: 10.25259/jcis_87_2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2023] [Accepted: 11/19/2023] [Indexed: 03/13/2024] Open
Abstract
Objectives Neural crest cells (NCCs) are transient structures in the fetal life in vertebrates, which develop at the junctional site of the non-neural and neural ectoderm, sharing a common developmental origin for diverse diseases. After Epithelio-mesenchymal (EMT) of the NCCs within the neural tube, delamination of NCCs occurs. After delamination, the transformation of these cells into various cell lineages produces melanocytes, bones, and cartilage of the skull, cells of the enteric and peripheral nervous system. After the conversion, these cells migrate into various locations of the entire body according to the cell lineage. Abnormalities in neural crest (NC) formation and migration result in various malformations and tumors, known as neurocristopathy. Material and Methods Herein, this case series describes a single-center experience in cephalic NC disorders over the past 3 years, including 17 cases of varying composition (i.e., vascular, dysgenetic, mixed, and neoplastic forms) involving the brain and occasionally skin, eyes, and face of the patients. Results In our study of 17 patients with cephalic NC disease, 6 (35.3%) patients had vascular form, 5 (29.4%) had dysgenetic form, 4 (23.5%) had mixed form, and 2 (11.7%) had neoplastic form. Brain involvement in the form of vascular or parenchyma or both vascular and parenchymal was seen in all of our patients (100%), skin in 6 (35.3%) patients, eye in 2 (11.7%), and face in 1 (5.9%) patient. Treatment was planned according to the various manifestations of the disease. Conclusion Neural crest diseases (NCDs) are a rare and under-recognized group of disorders in the literature and may have been under-reported due to a lack of awareness regarding the same. More such reporting may increase the repertoire of these rare disorders such that clinicians can have a high degree of suspicion leading to early detection and timely counseling and also improve preventive strategies and help in developing new drugs for these disorders or prevent them.
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Affiliation(s)
- Manoj Kumar Nayak
- Department of Radiodiagnosis, All India Institute of Medical Sciences, Bhubaneswar, Odisha, India
| | - Biswamohan Mishra
- Department of Neurology, All India Institute of Medical Sciences, New Delhi, Delhi, India
| | - Sebastian Levejoseph
- Department of Neuroimaging and Interventional Neuroradiology, All India Institute of Medical Sciences, New Delhi, Delhi, India
| | - Ajay Garg
- Department of Neuroimaging and Interventional Neuroradiology, All India Institute of Medical Sciences, New Delhi, Delhi, India
| | - Kalyan Sarma
- Department of Radiology, All India Institute of Medical Sciences, Guwahati, India
| | - Biswajit Sahoo
- Department of Radiodiagnosis, All India Institute of Medical Sciences, Bhubaneswar, Odisha, India
| | - Manjari Tripathi
- Department of Neurology, All India Institute of Medical Sciences, New Delhi, Delhi, India
| | - Shailesh B. Gaikwad
- Department of Neuroimaging and Interventional Neuroradiology, All India Institute of Medical Sciences, New Delhi, Delhi, India
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2
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Tekavec K, Švara T, Knific T, Gombač M, Cantile C. Histopathological and Immunohistochemical Evaluation of Canine Nerve Sheath Tumors and Proposal for an Updated Classification. Vet Sci 2022; 9:vetsci9050204. [PMID: 35622732 PMCID: PMC9144584 DOI: 10.3390/vetsci9050204] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 03/31/2022] [Accepted: 04/04/2022] [Indexed: 02/01/2023] Open
Abstract
Nerve sheath tumors are a group of tumors originating from Schwann cells, fibroblasts, and perineurial cells. In veterinary pathology, the terminology for nerve sheath tumors remains inconsistent, and many pathologists follow the human classification of such tumors in practice. Immunohistochemistry plays an important role in the diagnosis of nerve sheath tumors, but specific immunohistochemical and molecular biomarkers are lacking. In our study, we histopathologically reevaluated 79 canine nerve sheath tumors and assessed their reactivity for the immunohistochemical markers Sox10, claudin-1, GFAP, CNPase, and Ki-67. Based on the results, we classified the tumors according to the most recent human classification. Twelve cases were diagnosed as benign nerve sheath tumors, including six neurofibromas, three nerve sheath myxomas, two hybrid nerve sheath tumors (perineurioma/neurofibroma and perineurioma/schwannoma), and one schwannoma. Sixty-seven tumors were malignant nerve sheath tumors, including fifty-six conventional, four perineural, one epithelioid malignant nerve sheath tumor, and six malignant nerve sheath tumors with divergent differentiation. We believe that with the application of the proposed panel, an updated classification of canine nerve sheath tumors could largely follow the recent human WHO classification of tumors of the cranial and paraspinal nerves, but prospective studies would be needed to assess its prognostic value.
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Affiliation(s)
- Kristina Tekavec
- Department of Veterinary Science, University of Pisa, 56124 Pisa, Italy;
- Institute of Pathology, Wild Animals, Fish and Bees, Veterinary Faculty, University of Ljubljana, 1000 Ljubljana, Slovenia; (T.Š.); (M.G.)
- Correspondence:
| | - Tanja Švara
- Institute of Pathology, Wild Animals, Fish and Bees, Veterinary Faculty, University of Ljubljana, 1000 Ljubljana, Slovenia; (T.Š.); (M.G.)
| | - Tanja Knific
- Institute of Food Safety, Feed and Environment, Veterinary Faculty, University of Ljubljana, 1000 Ljubljana, Slovenia;
| | - Mitja Gombač
- Institute of Pathology, Wild Animals, Fish and Bees, Veterinary Faculty, University of Ljubljana, 1000 Ljubljana, Slovenia; (T.Š.); (M.G.)
| | - Carlo Cantile
- Department of Veterinary Science, University of Pisa, 56124 Pisa, Italy;
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3
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Medullary Thyroid Cancer. Nucl Med Mol Imaging 2022. [DOI: 10.1016/b978-0-12-822960-6.00106-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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4
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Goliusova DV, Klementieva NV, Panova AV, Mokrysheva NG, Kiselev SL. The Role of Genetic Factors in Endocrine Tissues Development and Its Regulation In Vivo and In Vitro. RUSS J GENET+ 2021. [DOI: 10.1134/s102279542103008x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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5
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Somatostatinoma and Neurofibromatosis Type 1-A Case Report and Review of the Literature. Diagnostics (Basel) 2020; 10:diagnostics10090620. [PMID: 32825782 PMCID: PMC7555390 DOI: 10.3390/diagnostics10090620] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Revised: 08/11/2020] [Accepted: 08/17/2020] [Indexed: 02/06/2023] Open
Abstract
Somatostatinomas are rare neuroendocrine tumors (NET) that arise in the gastrointestinal (GI) tract. Because of their insidious growth, they are usually asymptomatic until late stages, presenting as malignant disease. We report the case of a 50-year-old woman who presented with epigastric abdominal pain, diarrhea and significant weight loss in the last two years. On clinical examination the patient met the criteria for neurofibromatosis type 1 (NF1). Abdominal CT and MRI revealed an infiltrative duodenal mass, with pancreatic invasion, locoregional enlarged lymph nodes and disseminated hepatic nodules. Microscopy and immunohistochemistry uncovered a neuroendocrine tumor, staining positive for chromogranin A (CgA), synaptophysin and somatostatin, with a Ki67 = 1%. Somatostatin receptors (SSTRs) type 2 were negative and SSTRs type 5 were positive in less than 50% of tumoral cells. Our patient was classified as a T3N1M1 stage IV metastatic duodenal grade 1 somatostatinoma and treatment with somatostatin analogues and chemotherapy with capecitabine and temozolomide was started, with so far abdominal imaging follow-up showing stable disease. When a patient is diagnosed with a rare NET, such as a somatostatinoma, it is of utmost importance to determine if it is a sporadic tumor or just a feature of a genetic disorder.
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6
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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: 1] [Impact Index Per Article: 0.3] [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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7
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Fang Q, Zhang Y, Chen X, Li H, Cheng L, Zhu W, Zhang Z, Tang M, Liu W, Wang H, Wang T, Shen T, Chai R. Three-Dimensional Graphene Enhances Neural Stem Cell Proliferation Through Metabolic Regulation. Front Bioeng Biotechnol 2020; 7:436. [PMID: 31998703 PMCID: PMC6961593 DOI: 10.3389/fbioe.2019.00436] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Accepted: 12/06/2019] [Indexed: 12/13/2022] Open
Abstract
Graphene consists of two-dimensional sp2-bonded carbon sheets, a single or a few layers thick, which has attracted considerable interest in recent years due to its good conductivity and biocompatibility. Three-dimensional graphene foam (3DG) has been demonstrated to be a robust scaffold for culturing neural stem cells (NSCs) in vitro that not only supports NSCs growth, but also maintains cells in a more active proliferative state than 2D graphene films and ordinary glass. In addition, 3DG can enhance NSCs differentiation into astrocytes and especially neurons. However, the underlying mechanisms behind 3DG's effects are still poorly understood. Metabolism is the fundamental characteristic of life and provides substances for building and powering the cell. Metabolic activity is tightly tied with the proliferation, differentiation, and self-renewal of stem cells. This study focused on the metabolic reconfiguration of stem cells induced by culturing on 3DG. This study established the correlation between metabolic reconfiguration metabolomics with NSCs cell proliferation rate on different scaffold. Several metabolic processes have been uncovered in association with the proliferation change of NSCs. Especially, culturing on 3DG triggered pathways that increased amino acid incorporation and enhanced glucose metabolism. These data suggested a potential association between graphene and pathways involved in Parkinson's disease. Our work provides a very useful starting point for further studies of NSC fate determination on 3DG.
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Affiliation(s)
- Qiaojun Fang
- MOE Key Laboratory for Developmental Genes and Human Disease, Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research, Institute of Life Sciences, Southeast University, Nanjing, China
| | - Yuhua Zhang
- MOE Key Laboratory for Developmental Genes and Human Disease, Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research, Institute of Life Sciences, Southeast University, Nanjing, China
| | - Xiangbo Chen
- Key Laboratory of Molecular Epigenetics of the Ministry of Education, Northeast Normal University, Changchun, China.,Hangzhou Rongze Biotechnology Co., Ltd. Hangzhou, China
| | - He Li
- Department of Otolaryngology-Head and Neck Surgery, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Liya Cheng
- Institute of Life Sciences, Anhui Agricultural University, Hefei, China
| | - Wenjuan Zhu
- Zhangjiagang City First People's Hospital, The Affiliated Zhangjiagang Hospital of Suzhou University, Zhangjiagang, China
| | - Zhong Zhang
- MOE Key Laboratory for Developmental Genes and Human Disease, Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research, Institute of Life Sciences, Southeast University, Nanjing, China
| | - Mingliang Tang
- MOE Key Laboratory for Developmental Genes and Human Disease, Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research, Institute of Life Sciences, Southeast University, Nanjing, China
| | - Wei Liu
- Department of Otolaryngology-Head and Neck Surgery, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Hui Wang
- Department of Otolaryngology Head and Neck Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Tian Wang
- Department of Otolaryngology-Head and Neck Surgery, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Tie Shen
- Key Laboratory of Information and Computing Science Guizhou Province, Guizhou Normal University, Guiyang, China
| | - Renjie Chai
- MOE Key Laboratory for Developmental Genes and Human Disease, Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research, Institute of Life Sciences, Southeast University, Nanjing, China.,Co-Innovation Center of Neuroregeneration, Nantong University, Nantong, China.,Institute for Stem Cell and Regeneration, Chinese Academy of Science, Beijing, China.,Beijing Key Laboratory of Neural Regeneration and Repair, Capital Medical University, Beijing, China
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8
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Sato TS, Handa A, Priya S, Watal P, Becker RM, Sato Y. Neurocristopathies: Enigmatic Appearances of Neural Crest Cell–derived Abnormalities. Radiographics 2019; 39:2085-2102. [DOI: 10.1148/rg.2019190086] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- T. Shawn Sato
- From the Department of Radiology, Stead Family Children’s Hospital, University of Iowa, University of Iowa Hospitals and Clinics, 200 Hawkins Dr, 3889 JPP, Iowa City, IA 52242
| | - Atsuhiko Handa
- From the Department of Radiology, Stead Family Children’s Hospital, University of Iowa, University of Iowa Hospitals and Clinics, 200 Hawkins Dr, 3889 JPP, Iowa City, IA 52242
| | - Sarv Priya
- From the Department of Radiology, Stead Family Children’s Hospital, University of Iowa, University of Iowa Hospitals and Clinics, 200 Hawkins Dr, 3889 JPP, Iowa City, IA 52242
| | - Pankaj Watal
- From the Department of Radiology, Stead Family Children’s Hospital, University of Iowa, University of Iowa Hospitals and Clinics, 200 Hawkins Dr, 3889 JPP, Iowa City, IA 52242
| | - Robert M. Becker
- From the Department of Radiology, Stead Family Children’s Hospital, University of Iowa, University of Iowa Hospitals and Clinics, 200 Hawkins Dr, 3889 JPP, Iowa City, IA 52242
| | - Yutaka Sato
- From the Department of Radiology, Stead Family Children’s Hospital, University of Iowa, University of Iowa Hospitals and Clinics, 200 Hawkins Dr, 3889 JPP, Iowa City, IA 52242
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9
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Davis EL, Davis AR, Gugala Z, Olmsted-Davis EA. Is heterotopic ossification getting nervous?: The role of the peripheral nervous system in heterotopic ossification. Bone 2018; 109:22-27. [PMID: 28716552 PMCID: PMC5768468 DOI: 10.1016/j.bone.2017.07.016] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2017] [Revised: 07/12/2017] [Accepted: 07/13/2017] [Indexed: 12/28/2022]
Abstract
Heterotopic ossification (HO), or de novo bone formation in soft tissue, is often observed following traumatic injury. Recent studies suggest that peripheral nerves may play a key functional role in this process. The results supporting a neurological basis for HO are examined in this article. Evidence supports the fact that BMPs released from bone matrix possess the capacity to induce HO. However, the process cannot be recapitulated using recombinant proteins without extremely high doses suggesting other components are required for this process. Study of injuries that increase risk for HO, i.e. amputation, hip replacement, elbow fracture, burn, and CNS injury suggests that a likely candidate is traumatic injury of adjacent peripheral nerves. Recent studies suggest neuroinflammation may play a key functional role, by its ability to open the blood-nerve barrier (BNB). Barrier opening is characterized by a change in permeability and is experimentally assessed by the ability of Evans blue dye to enter the endoneurium of peripheral nerves. A combination of BMP and barrier opening is required to activate bone progenitors in the endoneurial compartment. This process is referred to as "neurogenic HO".
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Affiliation(s)
- Eleanor L Davis
- Center for Cell and Gene Therapy, Baylor College of Medicine, Texas Children's Hospital and Houston Methodist Hospital, Houston, TX 77030, United States
| | - Alan R Davis
- Center for Cell and Gene Therapy, Baylor College of Medicine, Texas Children's Hospital and Houston Methodist Hospital, Houston, TX 77030, United States; Department of Pediatrics - Section Hematology/Oncology, Baylor College of Medicine, Houston, TX 77030, United States; Department of Orthopedic Surgery, Baylor College of Medicine, Houston, TX 77030, United States
| | - Zbigniew Gugala
- Department of Orthopedic Surgery and Rehabilitation, University of Texas Medical Branch, Galveston, TX 77555, United States
| | - Elizabeth A Olmsted-Davis
- Center for Cell and Gene Therapy, Baylor College of Medicine, Texas Children's Hospital and Houston Methodist Hospital, Houston, TX 77030, United States; Department of Pediatrics - Section Hematology/Oncology, Baylor College of Medicine, Houston, TX 77030, United States; Department of Orthopedic Surgery, Baylor College of Medicine, Houston, TX 77030, United States.
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10
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Abstract
The carcinoid as originally described is part of the relatively large family of neuroendocrine neoplasia found in almost every organ. Historical reasons back their current definitions. Neuroendocrine cancer is most frequently observed in the lung and the digestive tract. In the lung is defined as carcinoid (typical and atypical) for well differentiated, low to intermediate grade, and small cell and large cell neuroendocrine carcinoma for poorly differentiated, high grade. In the digestive system are respectively defined as neuroendocrine tumor (NET) and neuroendocrine carcinoma (NEC) of small and large cell types. Grading and staging are developed for their clinical classification by the World Health Organization (WHO) and the American Joint Committee on Cancer (AJCC). In both anatomical sites the morphological features are overlapping, with bland histology for carcinoid and NET, and aggressive features with extensive necrosis, severe atypia and abundant, atypical mitoses for high grade cancer types. Such features are also essential diagnostic clues in cytological preparations. The confirmation of the neuroendocrine signature by immunohistochemistry is mandatory for the diagnosis; a minimum panel comprising chromogranin A and synaptophysin is recommended in the digestive system. In addition, the application of grading requires the mitotic count and or spotty necrosis assessment for lung, or the mitotic count and the Ki67 assessment in the digestive system.
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Affiliation(s)
- Frediano Inzani
- Institute of Anatomic Pathology, Università Cattolica del Sacro Cuore-Fondazione Policlinico Universitario Agostino Gemelli, Largo A. Gemelli, 8, 00168, Rome, Italy
- Roma European NeuroEndocrine Tumor Society (ENETS) Center of Excellence, Rome, Italy
| | - Gianluigi Petrone
- Institute of Anatomic Pathology, Università Cattolica del Sacro Cuore-Fondazione Policlinico Universitario Agostino Gemelli, Largo A. Gemelli, 8, 00168, Rome, Italy
- Roma European NeuroEndocrine Tumor Society (ENETS) Center of Excellence, Rome, Italy
| | - Guido Fadda
- Institute of Anatomic Pathology, Università Cattolica del Sacro Cuore-Fondazione Policlinico Universitario Agostino Gemelli, Largo A. Gemelli, 8, 00168, Rome, Italy
- Roma European NeuroEndocrine Tumor Society (ENETS) Center of Excellence, Rome, Italy
| | - Guido Rindi
- Institute of Anatomic Pathology, Università Cattolica del Sacro Cuore-Fondazione Policlinico Universitario Agostino Gemelli, Largo A. Gemelli, 8, 00168, Rome, Italy.
- Roma European NeuroEndocrine Tumor Society (ENETS) Center of Excellence, Rome, Italy.
- Institute of Anatomic Pathology, Università Cattolica - Policlinico A. Gemelli, Largo A. Gemelli, 8, I-00168, Rome, Italy.
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11
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Zalfa F, Panasiti V, Carotti S, Zingariello M, Perrone G, Sancillo L, Pacini L, Luciani F, Roberti V, D'Amico S, Coppola R, Abate SO, Rana RA, De Luca A, Fiers M, Melocchi V, Bianchi F, Farace MG, Achsel T, Marine JC, Morini S, Bagni C. The fragile X mental retardation protein regulates tumor invasiveness-related pathways in melanoma cells. Cell Death Dis 2017; 8:e3169. [PMID: 29144507 PMCID: PMC5775405 DOI: 10.1038/cddis.2017.521] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Revised: 08/24/2017] [Accepted: 08/25/2017] [Indexed: 02/06/2023]
Abstract
The fragile X mental retardation protein (FMRP) is lacking or mutated in patients with the fragile X syndrome (FXS), the most frequent form of inherited intellectual disability. FMRP affects metastasis formation in a mouse model for breast cancer. Here we show that FMRP is overexpressed in human melanoma with high Breslow thickness and high Clark level. Furthermore, meta-analysis of the TCGA melanoma data revealed that high levels of FMRP expression correlate significantly with metastatic tumor tissues, risk of relapsing and disease-free survival. Reduction of FMRP in metastatic melanoma cell lines impinges on cell migration, invasion and adhesion. Next-generation sequencing in human melanoma cells revealed that FMRP regulates a large number of mRNAs involved in relevant processes of melanoma progression. Our findings suggest an association between FMRP levels and the invasive phenotype in melanoma and might open new avenues towards the discovery of novel therapeutic targets.
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Affiliation(s)
- Francesca Zalfa
- Department of Medicine, Campus Bio-Medico University, via Alvaro del Portillo 21, 00128 Rome, Italy
| | - Vincenzo Panasiti
- Department of Medicine, Campus Bio-Medico University, via Alvaro del Portillo 21, 00128 Rome, Italy
| | - Simone Carotti
- Department of Medicine, Campus Bio-Medico University, via Alvaro del Portillo 21, 00128 Rome, Italy
| | - Maria Zingariello
- Department of Medicine, Campus Bio-Medico University, via Alvaro del Portillo 21, 00128 Rome, Italy
| | - Giuseppe Perrone
- Department of Medicine, Campus Bio-Medico University, via Alvaro del Portillo 21, 00128 Rome, Italy
| | - Laura Sancillo
- Department of Medicine and Science of Aging, University of Chieti 'G d'Annunzio', via dei Vestini 31, 66100 Chieti-Pescara, Italy
| | - Laura Pacini
- Department of Biomedicine and Prevention, University of Rome 'Tor Vergata', via Montpellier 1, 00133 Rome, Italy
| | - Flavie Luciani
- VIB/Center for the Biology of Disease, KU Leuven, O&N 4, Herestraat 49 Box 602, 3000, Leuven, Belgium.,Center for Human Genetics, Leuven Institute for Neuroscience and Disease, KU Leuven, O&N 4, Herestraat 49 Box 602, Leuven, 3000, Belgium
| | - Vincenzo Roberti
- Department of Dermatology, University of Rome 'La Sapienza', viale dell'Università 1, 00185 Rome, Italy
| | - Silvia D'Amico
- Department of Biomedicine and Prevention, University of Rome 'Tor Vergata', via Montpellier 1, 00133 Rome, Italy
| | - Rosa Coppola
- Department of Medicine, Campus Bio-Medico University, via Alvaro del Portillo 21, 00128 Rome, Italy
| | - Simona Osella Abate
- Department of Medical Science and Human Oncology, Section of Dermato-Oncology, University of Turin, via Verdi 8, 10124 Turin, Italy
| | - Rosa Alba Rana
- Department of Medicine and Science of Aging, University of Chieti 'G d'Annunzio', via dei Vestini 31, 66100 Chieti-Pescara, Italy
| | - Anastasia De Luca
- Department of Biomedicine and Prevention, University of Rome 'Tor Vergata', via Montpellier 1, 00133 Rome, Italy
| | - Mark Fiers
- VIB/Center for the Biology of Disease, KU Leuven, O&N 4, Herestraat 49 Box 602, 3000, Leuven, Belgium.,Center for Human Genetics, Leuven Institute for Neuroscience and Disease, KU Leuven, O&N 4, Herestraat 49 Box 602, Leuven, 3000, Belgium
| | - Valentina Melocchi
- ISBREMIT, Institute for Stem-cell Biology, Regenerative Medicine and Innovative Therapies, IRCCS Casa Sollievo della Sofferenza, viale Padre Pio 7, 71013 San Giovanni Rotondo (FG), Italy
| | - Fabrizio Bianchi
- ISBREMIT, Institute for Stem-cell Biology, Regenerative Medicine and Innovative Therapies, IRCCS Casa Sollievo della Sofferenza, viale Padre Pio 7, 71013 San Giovanni Rotondo (FG), Italy
| | - Maria Giulia Farace
- Department of Biomedicine and Prevention, University of Rome 'Tor Vergata', via Montpellier 1, 00133 Rome, Italy
| | - Tilmann Achsel
- VIB/Center for the Biology of Disease, KU Leuven, O&N 4, Herestraat 49 Box 602, 3000, Leuven, Belgium.,Center for Human Genetics, Leuven Institute for Neuroscience and Disease, KU Leuven, O&N 4, Herestraat 49 Box 602, Leuven, 3000, Belgium
| | - Jean-Christophe Marine
- VIB/Center for the Biology of Disease, KU Leuven, O&N 4, Herestraat 49 Box 602, 3000, Leuven, Belgium.,Center for Human Genetics, Leuven Institute for Neuroscience and Disease, KU Leuven, O&N 4, Herestraat 49 Box 602, Leuven, 3000, Belgium
| | - Sergio Morini
- Department of Medicine, Campus Bio-Medico University, via Alvaro del Portillo 21, 00128 Rome, Italy
| | - Claudia Bagni
- Department of Biomedicine and Prevention, University of Rome 'Tor Vergata', via Montpellier 1, 00133 Rome, Italy.,VIB/Center for the Biology of Disease, KU Leuven, O&N 4, Herestraat 49 Box 602, 3000, Leuven, Belgium.,Center for Human Genetics, Leuven Institute for Neuroscience and Disease, KU Leuven, O&N 4, Herestraat 49 Box 602, Leuven, 3000, Belgium.,Department of Fundamental Neuroscience, University of Lausanne, Rue du Bugnon 9, 1005 Lausanne, Switzerland
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12
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Abstract
Thyroid hormones are crucial for organismal development and homeostasis. In humans, untreated congenital hypothyroidism due to thyroid agenesis inevitably leads to cretinism, which comprises irreversible brain dysfunction and dwarfism. Elucidating how the thyroid gland - the only source of thyroid hormones in the body - develops is thus key for understanding and treating thyroid dysgenesis, and for generating thyroid cells in vitro that might be used for cell-based therapies. Here, we review the principal mechanisms involved in thyroid organogenesis and functional differentiation, highlighting how the thyroid forerunner evolved from the endostyle in protochordates to the endocrine gland found in vertebrates. New findings on the specification and fate decisions of thyroid progenitors, and the morphogenesis of precursor cells into hormone-producing follicular units, are also discussed.
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Affiliation(s)
- Mikael Nilsson
- Sahlgrenska Cancer Center, Institute of Biomedicine, University of Gothenburg, Göteborg SE-40530, Sweden
| | - Henrik Fagman
- Sahlgrenska Cancer Center, Institute of Biomedicine, University of Gothenburg, Göteborg SE-40530, Sweden.,Department of Clinical Pathology and Genetics, Sahlgrenska University Hospital, Göteborg SE-41345, Sweden
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13
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Chen CC, Hsia CW, Ho CW, Liang CM, Chen CM, Huang KL, Kang BH, Chen YH. Hypoxia and hyperoxia differentially control proliferation of rat neural crest stem cells via distinct regulatory pathways of the HIF1α-CXCR4 and TP53-TPM1 proteins. Dev Dyn 2017; 246:162-185. [PMID: 28002632 DOI: 10.1002/dvdy.24481] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Revised: 12/09/2016] [Accepted: 12/13/2016] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Neural crest stem cells (NCSCs) are a population of adult multipotent stem cells. We are interested in studying whether oxygen tensions affect the capability of NCSCs to self-renew and repair damaged tissues. NCSCs extracted from the hair follicle bulge region of the rat whisker pad were cultured in vitro under different oxygen tensions. RESULTS We found significantly increased and decreased rates of cell proliferation in rat NCSCs (rNCSCs) cultured, respectively, at 0.5% and 80% oxygen levels. At 0.5% oxygen, the expression of both hypoxia-inducible factor (HIF) 1α and CXCR4 was greatly enhanced in the rNCSC nuclei and was suppressed by incubation with the CXCR4-specific antagonist AMD3100. In addition, the rate of cell apoptosis in the rNCSCs cultured at 80% oxygen was dramatically increased, associated with increased nuclear expression of TP53, decreased cytoplasmic expression of TPM1 (tropomyosin-1), and increased nuclear-to-cytoplasmic translocation of S100A2. Incubation of rNCSCs with the antioxidant N-acetylcysteine (NAC) overcame the inhibitory effect of 80% oxygen on proliferation and survival of rNCSCs. CONCLUSIONS Our results show for the first time that extreme oxygen tensions directly control NCSC proliferation differentially via distinct regulatory pathways of proteins, with hypoxia via the HIF1α-CXCR4 pathway and hyperoxia via the TP53-TPM1 pathway. Developmental Dynamics 246:162-185, 2017. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Chien-Cheng Chen
- Graduate Institute of Aerospace and Undersea Medicine, National Defense Medical Center, Neihu District, Taipei City, Taiwan
| | - Ching-Wu Hsia
- Department of Finance, School of Management, Shih Hsin University, Wenshan District, Taipei City, Taiwan
| | - Cheng-Wen Ho
- Graduate Institute of Aerospace and Undersea Medicine, National Defense Medical Center, Neihu District, Taipei City, Taiwan
- Division of Rehabilitation Medicine, Taoyuan Armed Forces General Hospital, Longtan District, Taoyuan City, Taiwan
| | - Chang-Min Liang
- Department of Ophthalmology, Tri-Service General Hospital, Neihu District, Taipei City, Taiwan
| | - Chieh-Min Chen
- Graduate Institute of Microbiology and Immunology, National Defense Medical Center, Neihu District, Taipei City, Taiwan
| | - Kun-Lun Huang
- Graduate Institute of Aerospace and Undersea Medicine, National Defense Medical Center, Neihu District, Taipei City, Taiwan
- Department of Undersea and Hyperbaric Medicine, Tri-Service General Hospital, Neihu District, Taipei City, Taiwan
| | - Bor-Hwang Kang
- Division of Diving Medicine, Zuoying Branch of Kaohsiung Armed Forces General Hospital, Zuoying District, Kaohsiung City, Taiwan
- Department of Otorhinolaryngology - Head and Neck Surgery, Tri-Service General Hospital, Taipei City, Taiwan
| | - Yi-Hui Chen
- Graduate Institute of Aerospace and Undersea Medicine, National Defense Medical Center, Neihu District, Taipei City, Taiwan
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Nilsson M, Williams ED. Medullary Thyroid Carcinoma - Distinction towards Neuroectodermal Tumours: Reply to the Letter by Paschou and Vryonidou. Eur Thyroid J 2016; 5:279-280. [PMID: 28101495 PMCID: PMC5216186 DOI: 10.1159/000450680] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Affiliation(s)
- Mikael Nilsson
- University of Gothenburg, Göteborg, Sweden
- *Dr. Mikael Nilsson, Sahlgrenska Cancer Center, University of Gothenburg, Box 425, SE–40530 GØteborg (Sweden), E-Mail
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Swope VB, Abdel-Malek ZA. Significance of the Melanocortin 1 and Endothelin B Receptors in Melanocyte Homeostasis and Prevention of Sun-Induced Genotoxicity. Front Genet 2016; 7:146. [PMID: 27582758 PMCID: PMC4987328 DOI: 10.3389/fgene.2016.00146] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Accepted: 07/27/2016] [Indexed: 12/13/2022] Open
Abstract
The membrane bound melanocortin 1 receptor (MC1R), and the endothelin B receptor (ENDBR) are two G-protein coupled receptors that play important roles in constitutive regulation of melanocytes and their response to ultraviolet radiation (UVR), the main etiological factor for melanoma. The human MC1R is a Gs protein-coupled receptor, which is activated by its agonists α-melanocyte stimulating hormone (α-melanocortin; α-MSH) and adrenocorticotropic hormone (ACTH). The ENDBR is a Gq coupled-receptor, which is activated by Endothelin (ET)-3 during embryonic development, and ET-1 postnatally. Pigmentation and the DNA repair capacity are two major factors that determine the risk for melanoma. Activation of the MC1R by its agonists stimulates the synthesis of eumelanin, the dark brown photoprotective pigment. In vitro studies showed that α-MSH and ET-1 interact synergistically in the presence of basic fibroblast growth factor to stimulate human melanocyte proliferation and melanogenesis, and to inhibit UVR-induced apoptosis. An important function of the MC1R is reduction of oxidative stress and activation of DNA repair pathways. The human MC1R is highly polymorphic, and MC1R variants, particularly those that cause loss of function of the expressed receptor, are associated with increased melanoma risk independently of pigmentation. These variants compromise the DNA repair and antioxidant capacities of human melanocytes. Recently, activation of ENDBR by ET-1 was reported to reduce the induction and enhance the repair of UVR-induced DNA photoproducts. We conclude that α-MSH and ET-1 and their cognate receptors MC1R and ENDBR reduce the risk for melanoma by maintaining genomic stability of melanocytes via modulating the DNA damage response to solar UVR. Elucidating the response of melanocytes to UVR should improve our understanding of the process of melanomagenesis, and lead to effective melanoma chemoprevention, as well as therapeutic strategies.
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Affiliation(s)
- Viki B Swope
- Department of Dermatology, College of Medicine, University of Cincinnati, Cincinnati OH, USA
| | - Zalfa A Abdel-Malek
- Department of Dermatology, College of Medicine, University of Cincinnati, Cincinnati OH, USA
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16
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Lin SC, Gou GH, Hsia CW, Ho CW, Huang KL, Wu YF, Lee SY, Chen YH. Simulated Microgravity Disrupts Cytoskeleton Organization and Increases Apoptosis of Rat Neural Crest Stem Cells Via Upregulating CXCR4 Expression and RhoA-ROCK1-p38 MAPK-p53 Signaling. Stem Cells Dev 2016; 25:1172-93. [PMID: 27269634 DOI: 10.1089/scd.2016.0040] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Neural crest stem cells (NCSCs) are a population of multipotent stem cells that are distributed broadly in many tissues and organs and are capable of differentiating into a variety of cell types that are dispersed throughout three germ layers. We are interested in studying the effects of simulated microgravity on the survival and self-renewal of NCSCs. NCSCs extracted from the hair follicle bulge region of the rat whisker pad were cultured in vitro, respectively, in a 2D adherent environment and a 3D suspension environment using the rotatory cell culture system (RCCS) to simulate microgravity. We found that rat NCSCs (rNCSCs) cultured in the RCCS for 24 h showed disrupted organization of filamentous actin, increased globular actin level, formation of plasma membrane blebbing and neurite-like artifact, as well as decreased levels of cortactin and vimentin. Interestingly, ∼70% of RCCS-cultured rNCSCs co-expressed cleaved (active) caspase-3 and neuronal markers microtubule-associated protein 2 (MAP2) and Tuj1 instead of NCSC markers, suggesting stress-induced formation of neurite-like artifact in rNCSCs. In addition, rNCSCs showed increased C-X-C chemokine receptor 4 (CXCR4) expression, RhoA GTPase activation, Rho-associated kinase 1 (ROCK1) and p38 mitogen-activated protein kinase (MAPK) phosphorylation, and p53 expression in the nucleus. Incubation of rNCSCs with the Gα protein inhibitor pertussis toxin or CXCR4 siRNA during RCCS-culturing prevented cytoskeleton disorganization and plasma membrane blebbing, and it suppressed apoptosis of rNCSCs. Taken together, we demonstrate for the first time that simulated microgravity disrupts cytoskeleton organization and increases apoptosis of rNCSCs via upregulating CXCR4 expression and the RhoA-ROCK1-p38 MAPK-p53 signaling pathway.
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Affiliation(s)
- Shing-Chen Lin
- 1 Graduate Institute of Aerospace and Undersea Medicine, National Defense Medical Center , Neihu District, Taipei City, Taiwan
| | - Guo-Hau Gou
- 2 Graduate Institute of Medical Sciences, National Defense Medical Center , Neihu District, Taipei City, Taiwan
| | - Ching-Wu Hsia
- 2 Graduate Institute of Medical Sciences, National Defense Medical Center , Neihu District, Taipei City, Taiwan
| | - Cheng-Wen Ho
- 1 Graduate Institute of Aerospace and Undersea Medicine, National Defense Medical Center , Neihu District, Taipei City, Taiwan .,3 Division of Rehabilitation Medicine, Taoyuan Armed Forces General Hospital , Longtan Township, Taoyuan County, Taiwan
| | - Kun-Lun Huang
- 1 Graduate Institute of Aerospace and Undersea Medicine, National Defense Medical Center , Neihu District, Taipei City, Taiwan .,4 Department of Undersea and Hyperbaric Medicine, Tri-Service General Hospital , Neihu District, Taipei City, Taiwan
| | - Yung-Fu Wu
- 5 Department of Medical Research, Tri-Service General Hospital , Neihu District, Taipei City, Taiwan
| | - Shih-Yu Lee
- 1 Graduate Institute of Aerospace and Undersea Medicine, National Defense Medical Center , Neihu District, Taipei City, Taiwan
| | - Yi-Hui Chen
- 1 Graduate Institute of Aerospace and Undersea Medicine, National Defense Medical Center , Neihu District, Taipei City, Taiwan
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Cornell B, Toyo-oka K. Deficiency of 14-3-3ε and 14-3-3ζ by the Wnt1 promoter-driven Cre recombinase results in pigmentation defects. BMC Res Notes 2016; 9:180. [PMID: 27001213 PMCID: PMC4802620 DOI: 10.1186/s13104-016-1980-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Accepted: 03/07/2016] [Indexed: 11/20/2022] Open
Abstract
Background The seven 14-3-3 protein isoforms bind to numerous proteins and are involved in a wide variety of cellular events, including the cell cycle, cell division, apoptosis and cancer. We previously found the importance of 14-3-3 proteins in neuronal migration of pyramidal neurons in the developing cortex. Here, we test the function of 14-3-3 proteins in the development of neural crest cells in vivo using mouse genetic approaches. Results We found that 14-3-3 proteins are important for the development of neural crest cells, in particular for the pigmentation of the fur on the ventral region of mice. Conclusions Our data obtained from the 14-3-3ε/14-3-3ζ/Wnt1-Cre mice strongly indicate the importance of 14-3-3 proteins in the development of melanocyte lineages.
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Affiliation(s)
- Brett Cornell
- Department of Neurobiology and Anatomy, Drexel University College of Medicine, Philadelphia, PA, 19129, USA
| | - Kazuhito Toyo-oka
- Department of Neurobiology and Anatomy, Drexel University College of Medicine, Philadelphia, PA, 19129, USA.
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18
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Johansson E, Andersson L, Örnros J, Carlsson T, Ingeson-Carlsson C, Liang S, Dahlberg J, Jansson S, Parrillo L, Zoppoli P, Barila GO, Altschuler DL, Padula D, Lickert H, Fagman H, Nilsson M. Revising the embryonic origin of thyroid C cells in mice and humans. Development 2015; 142:3519-28. [PMID: 26395490 PMCID: PMC4631767 DOI: 10.1242/dev.126581] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2015] [Accepted: 08/27/2015] [Indexed: 12/13/2022]
Abstract
Current understanding infers a neural crest origin of thyroid C cells, the major source of calcitonin in mammals and ancestors to neuroendocrine thyroid tumors. The concept is primarily based on investigations in quail–chick chimeras involving fate mapping of neural crest cells to the ultimobranchial glands that regulate Ca2+ homeostasis in birds, reptiles, amphibians and fishes, but whether mammalian C cell development involves a homologous ontogenetic trajectory has not been experimentally verified. With lineage tracing, we now provide direct evidence that Sox17+ anterior endoderm is the only source of differentiated C cells and their progenitors in mice. Like many gut endoderm derivatives, embryonic C cells were found to coexpress pioneer factors forkhead box (Fox) a1 and Foxa2 before neuroendocrine differentiation takes place. In the ultimobranchial body epithelium emerging from pharyngeal pouch endoderm in early organogenesis, differential Foxa1/Foxa2 expression distinguished two spatially separated pools of C cell precursors with different growth properties. A similar expression pattern was recapitulated in medullary thyroid carcinoma cells in vivo, consistent with a growth-promoting role of Foxa1. In contrast to embryonic precursor cells, C cell-derived tumor cells invading the stromal compartment downregulated Foxa2, foregoing epithelial-to-mesenchymal transition designated by loss of E-cadherin; both Foxa2 and E-cadherin were re-expressed at metastatic sites. These findings revise mammalian C cell ontogeny, expand the neuroendocrine repertoire of endoderm and redefine the boundaries of neural crest diversification. The data further underpin distinct functions of Foxa1 and Foxa2 in both embryonic and tumor development. Highlighted article: Mouse thyroid C cell precursors arise in foregut endoderm, and not the neural crest, disproving the current concept of a neural crest origin of thyroid neuroendocrine cells.
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Affiliation(s)
- Ellen Johansson
- Sahlgrenska Cancer Center, Institute of Biomedicine, University of Gothenburg, Göteborg SE-40530, Sweden
| | - Louise Andersson
- Sahlgrenska Cancer Center, Institute of Biomedicine, University of Gothenburg, Göteborg SE-40530, Sweden
| | - Jessica Örnros
- Sahlgrenska Cancer Center, Institute of Biomedicine, University of Gothenburg, Göteborg SE-40530, Sweden
| | - Therese Carlsson
- Sahlgrenska Cancer Center, Institute of Biomedicine, University of Gothenburg, Göteborg SE-40530, Sweden
| | - Camilla Ingeson-Carlsson
- Sahlgrenska Cancer Center, Institute of Biomedicine, University of Gothenburg, Göteborg SE-40530, Sweden
| | - Shawn Liang
- Sahlgrenska Cancer Center, Institute of Biomedicine, University of Gothenburg, Göteborg SE-40530, Sweden
| | - Jakob Dahlberg
- Department of Surgery, Sahlgrenska University Hospital, Göteborg, SE-41345, Sweden
| | - Svante Jansson
- Department of Surgery, Sahlgrenska University Hospital, Göteborg, SE-41345, Sweden
| | | | - Pietro Zoppoli
- Institute for Cancer Genetics, Columbia University, 1130 St Nicholas Avenue, New York, NY 10031, USA
| | - Guillermo O Barila
- Department of Pharmacology and Chemical Biology, School of Medicine, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Daniel L Altschuler
- Department of Pharmacology and Chemical Biology, School of Medicine, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Daniela Padula
- Institute of Diabetes and Regeneration Research, Helmholtz Center Munich, German Research Center for Environmental Health GmgH, Ingolstaedter Landstraße 1, Munich 85764, Germany
| | - Heiko Lickert
- Institute of Diabetes and Regeneration Research, Helmholtz Center Munich, German Research Center for Environmental Health GmgH, Ingolstaedter Landstraße 1, Munich 85764, Germany
| | - Henrik Fagman
- Department of Clinical Pathology and Genetics, Sahlgrenska University Hospital, Göteborg, SE-41345, Sweden
| | - Mikael Nilsson
- Sahlgrenska Cancer Center, Institute of Biomedicine, University of Gothenburg, Göteborg SE-40530, Sweden
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Liu B, Hunter DJ, Smith AA, Chen S, Helms JA. The capacity of neural crest-derived stem cells for ocular repair. ACTA ACUST UNITED AC 2014; 102:299-308. [DOI: 10.1002/bdrc.21077] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2014] [Accepted: 08/22/2014] [Indexed: 12/31/2022]
Affiliation(s)
- Bo Liu
- Division of Plastic and Reconstructive Surgery; Department of Surgery School of Medicine; Stanford University; Stanford California
| | - Daniel J. Hunter
- Division of Plastic and Reconstructive Surgery; Department of Surgery School of Medicine; Stanford University; Stanford California
| | - Andrew A. Smith
- Division of Plastic and Reconstructive Surgery; Department of Surgery School of Medicine; Stanford University; Stanford California
| | - Serafine Chen
- Division of Plastic and Reconstructive Surgery; Department of Surgery School of Medicine; Stanford University; Stanford California
| | - Jill A. Helms
- Division of Plastic and Reconstructive Surgery; Department of Surgery School of Medicine; Stanford University; Stanford California
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20
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Karunamuni GH, Ma P, Gu S, Rollins AM, Jenkins MW, Watanabe M. Connecting teratogen-induced congenital heart defects to neural crest cells and their effect on cardiac function. BIRTH DEFECTS RESEARCH. PART C, EMBRYO TODAY : REVIEWS 2014; 102:227-50. [PMID: 25220155 PMCID: PMC4238913 DOI: 10.1002/bdrc.21082] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2014] [Accepted: 08/26/2014] [Indexed: 12/26/2022]
Abstract
Neural crest cells play many key roles in embryonic development, as demonstrated by the abnormalities that result from their specific absence or dysfunction. Unfortunately, these key cells are particularly sensitive to abnormalities in various intrinsic and extrinsic factors, such as genetic deletions or ethanol-exposure that lead to morbidity and mortality for organisms. This review discusses the role identified for a segment of neural crest in regulating the morphogenesis of the heart and associated great vessels. The paradox is that their derivatives constitute a small proportion of cells to the cardiovascular system. Findings supporting that these cells impact early cardiac function raises the interesting possibility that they indirectly control cardiovascular development at least partially through regulating function. Making connections between insults to the neural crest, cardiac function, and morphogenesis is more approachable with technological advances. Expanding our understanding of early functional consequences could be useful in improving diagnosis and testing therapies.
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Affiliation(s)
- Ganga H. Karunamuni
- Department of Pediatrics, Case Western Reserve University School of Medicine, Case Medical Center Division of Pediatric Cardiology, Rainbow Babies and Children’s Hospital, Cleveland OH 44106
| | - Pei Ma
- Department of Biomedical Engineering, Case Western Reserve University School of Engineering, Cleveland OH 44106
| | - Shi Gu
- Department of Biomedical Engineering, Case Western Reserve University School of Engineering, Cleveland OH 44106
| | - Andrew M. Rollins
- Department of Biomedical Engineering, Case Western Reserve University School of Engineering, Cleveland OH 44106
| | - Michael W. Jenkins
- Department of Pediatrics, Case Western Reserve University School of Medicine, Case Medical Center Division of Pediatric Cardiology, Rainbow Babies and Children’s Hospital, Cleveland OH 44106
- Department of Biomedical Engineering, Case Western Reserve University School of Engineering, Cleveland OH 44106
| | - Michiko Watanabe
- Department of Pediatrics, Case Western Reserve University School of Medicine, Case Medical Center Division of Pediatric Cardiology, Rainbow Babies and Children’s Hospital, Cleveland OH 44106
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21
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Wang J, Gao L, Song C. Thyroid hemiagenesis associated with medullary or papillary carcinoma: report of cases. Head Neck 2014; 36:E106-11. [PMID: 24115043 DOI: 10.1002/hed.23501] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2013] [Revised: 04/08/2013] [Accepted: 09/10/2013] [Indexed: 11/07/2022] Open
Abstract
BACKGROUND Thyroid hemiagenesis is a rare congenital anomaly in which 1 thyroid lobe fails to develop. Co-occurrence of hemiagenesis and thyroid carcinoma is extremely rare. Here, we report 2 cases of thyroid hemiagenesis with carcinoma. METHODS The first patient was referred with a left thyroid mass and absent right lobe. The frozen section examination revealed medullary thyroid carcinoma (MTC); therefore, a left thyroid lobectomy plus neck dissection was performed. Another patient was referred with a right thyroid mass and absent left lobe. Fine-needle aspiration biopsy was suspicious for papillary carcinoma. The patient underwent right thyroid lobectomy plus neck dissection. RESULTS The operative findings confirmed hemiagenesis of the right lobe and MTC in the left lobe for the first case, and hemiagenesis of the left lobe and papillary carcinoma in the right lobe for the second case. CONCLUSION Our case represents the first reported case of association between thyroid hemiagenesis and MTC.
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Affiliation(s)
- Jianbiao Wang
- Department of Head and Neck Surgery, Institute of Minimally Invasive Surgery of Zhejiang University, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
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23
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Abstract
The concept of precursor lesions of endocrine neoplasms is a new and interesting topic in endocrine pathology. A variety of clinicopathological conditions are associated with a sequence of cellular changes from hyperplasia to neoplasia; dysplasia is, in contrast, quite rare. The majority of precursor lesions is associated with familial genetic syndromes. These include C-cell hyperplasia in thyroid that is associated with familial medullary thyroid carcinoma, adrenal medullary hyperplasia as a precursor of phaeochromocytomas in MEN2 syndrome, rare pituitary adenohypophyseal cell hyperplasia in familial syndromes associated with pituitary adenomas, MEN1-related precursor gastric enterochromaffin-like cell (ECL) hyperplasia, and duodenal gastrin producing (G) and/or somatostatin producing (D) cell hyperplasia that give rise to type II gastric neuroendocrine tumours (NETs) and duodenal NETs, respectively, and MEN1- or VHL-related islet hyperplasia, islet dysplasia and ductulo-insular complexes that are associated with pancreatic NETs. Other hyperplasias are not thought to be associated with genetic predisposition. Some are attributed to inflammation; autoimmune chronic atrophic gastritis-related ECL hyperplasia can progress to type I gastric NETs, and EC (enterochromaffin) cell or L cell hyperplasia associated with inflammatory bowel diseases can progress to colorectal NETs. In the lung, diffuse idiopathic pulmonary neuroendocrine cell hyperplasia can give rise to peripherally-located low grade pulmonary NETs and tumourlets (neuroendocrine microtumours <5 mm). Rarely, secondary hyperplasias develop into autonomous neoplasms, as in tertiary hyperparathyroidism or pituitary thyrotroph adenomas in primary hypothyroidism. While some precursor lesions, such as thyroid C cell hyperplasia, represent frankly premalignant conditions, others may represent a sequence of proliferative changes from hyperplasia to benign neoplasia that may also progress to malignancy.
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Pacak K, Jochmanova I, Prodanov T, Yang C, Merino MJ, Fojo T, Prchal JT, Tischler AS, Lechan RM, Zhuang Z. New syndrome of paraganglioma and somatostatinoma associated with polycythemia. J Clin Oncol 2013; 31:1690-8. [PMID: 23509317 DOI: 10.1200/jco.2012.47.1912] [Citation(s) in RCA: 110] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
PURPOSE The occurrence of ≥ two distinct types of tumors, one of them paraganglioma (PGL), is unusual in an individual patient, except in hereditary cancer syndromes. PATIENTS AND METHODS Four unrelated patients were investigated, with thorough clinical evaluation. Plasma and tissue catecholamines and metanephrines were measured by high-performance liquid chromatography. Anatomic and functional imaging were performed for tumor visualization. Germline and tumor tissue DNA were analyzed for hypoxia-inducible factor 2 alpha (HIF2A) mutations. The prolyl hydroxylation and stability of the mutant HIF2α protein, transcriptional activity of mutant HIF2A, and expression of hypoxia-related genes were also investigated. Immunohistochemical staining for HIF1/2α was performed on formalin-fixed, paraffin-embedded tumor tissue. RESULTS Patients were found to have polycythemia, multiple PGLs, and duodenal somatostatinomas by imaging or biochemistry with somatic gain-of-function HIF2A mutations. Each patient carried an identical unique mutation in both types of tumors but not in germline DNA. The HIF2A mutations in these patients were clustered adjacent to an oxygen-sensing proline residue, affecting HIF2α interaction with the prolyl hydroxylase domain 2-containing protein, decreasing the hydroxylation of HIF2α, and reducing HIF2α affinity for the von Hippel-Lindau protein and its degradation. An increase in the half-life of HIF2α was associated with upregulation of the hypoxia-related genes EPO, VEGFA, GLUT1, and END1 in tumors. CONCLUSION Our findings indicate the existence of a new syndrome with multiple PGLs and somatostatinomas associated with polycythemia. This new syndrome results from somatic gain-of-function HIF2A mutations, which cause an upregulation of hypoxia-related genes, including EPO and genes important in cancer biology.
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Affiliation(s)
- Karel Pacak
- Section on Medical Neuroendocrinology, Program in Reproductive and Adult Endocrinology, Eunice Kennedy Shriver NICHD, NIH, Bethesda, MD 20892-1109, USA.
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25
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Dupin E, Sommer L. Neural crest progenitors and stem cells: from early development to adulthood. Dev Biol 2012; 366:83-95. [PMID: 22425619 DOI: 10.1016/j.ydbio.2012.02.035] [Citation(s) in RCA: 167] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2012] [Accepted: 02/29/2012] [Indexed: 01/09/2023]
Abstract
In the vertebrate embryo, the neural crest forms transiently in the dorsal neural primordium to yield migratory cells that will invade nearly all tissues and later, will differentiate into bones and cartilages, neurons and glia, endocrine cells, vascular smooth muscle cells and melanocytes. Due to the amazingly diversified array of cell types it produces, the neural crest is an attractive model system in the stem cell field. We present here in vivo and in vitro studies of single cell fate, which led to the discovery and the characterization of stem cells in the neural crest of avian and mammalian embryos. Some of the key issues in neural crest cell diversification are discussed, such as the time of segregation of mesenchymal vs. neural/melanocytic lineages, and the origin and close relationships between the glial and melanocytic lineages. An overview is also provided of the diverse types of neural crest-like stem cells and progenitors, recently identified in a growing number of adult tissues in animals and humans. Current and future work, in which in vivo lineage studies and the use of injury models will complement the in vitro culture analysis, should help in unraveling the properties and function of neural crest-derived progenitors in development and disease.
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Affiliation(s)
- Elisabeth Dupin
- INSERM U894 Equipe Plasticité Gliale, Centre de Psychiatrie et de Neuroscience, 2 ter Rue d'Alésia 75014 Paris, France.
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26
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Abstract
Neuroendocrine neoplasms arise in almost every organ of the body and are variably defined according to the site of origin. This Review focuses on neuroendocrine neoplasms of the digestive tract and pancreas. The 2010 WHO classification of tumors of the digestive system introduces grading and staging tools for neuroendocrine neoplasms. A carcinoid is now defined as a grade 1 or 2 neuroendocrine tumor and grade 3, small-cell or large-cell carcinomas are defined as neuroendocrine carcinoma. Epidemiological data show a worldwide increase in the prevalence and incidence of gastroentero-pancreatic neuroendocrine tumors in the past few decades, which is probably due to improved methods of detection of these tumors. The current diagnostic procedures and treatment options for neuroendocrine neoplasms are defined and summarized in the Review, although evidence-based data are lacking. Surgery remains the treatment mainstay and somatostatin analogues the basis for both diagnosis and therapy as the only 'theranostic' tool. Emerging compounds including chemotherapeutic agents, small molecules and biological therapies may provide new hope for patients.
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Affiliation(s)
- Guido Rindi
- Institute of Pathology, Università Cattolica del Sacro Cuore-Policlinico A. Gemelli, Largo A. Gemelli 8, I-00168 Rome, Italy.
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Abstract
In this essay, the role of the neural crest in the development of the vertebrate embryo is briefly described. The techniques used to document the neural crest origin of various cell types and the tumors arising from them are discussed, with emphasis on Le Douarin's quail-chick chimera model. The current dogma on the origin of the cells of the diffuse endocrine system is presented, and some personal conjectures based on the microscopic appearances of various types of normal, vestigial and neoplastic human tissues are offered to the reader as 'food for thought.'
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Affiliation(s)
- Juan Rosai
- International Center for Oncologic Pathology Consultations, Centro Diagnostico Italiano, Milan, Italy.
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28
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Eisenhofer G, Timmers HJ, Lenders JWM, Bornstein SR, Tiebel O, Mannelli M, King KS, Vocke CD, Linehan WM, Bratslavsky G, Pacak K. Age at diagnosis of pheochromocytoma differs according to catecholamine phenotype and tumor location. J Clin Endocrinol Metab 2011; 96:375-84. [PMID: 21147885 PMCID: PMC3048320 DOI: 10.1210/jc.2010-1588] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
CONTEXT Pheochromocytomas and paragangliomas (PPGLs) are diagnosed earlier in patients with hereditary than sporadic disease. Whether other factors influence age at diagnosis is unclear. OBJECTIVE We examined ages at which PPGLs were diagnosed according to different catecholamine phenotypes and locations of tumors. DESIGN & SETTING Retrospective multicenter study. PATIENTS Patients with PPGLs included 172 with and 183 without identified germline mutations or hereditary syndromes. BIOCHEMICAL MEASUREMENTS: Differences in plasma concentrations of metanephrine, a metabolite of epinephrine, were used to distinguish epinephrine-producing tumors from those lacking epinephrine production. RESULTS Patients with epinephrine-producing tumors were diagnosed 11 yr later (P < 0.001) than those with tumors lacking appreciable epinephrine production. Among patients without evidence of a hereditary condition, those with and without epinephrine-producing tumors had respective mean ± se ages of 50 ± 2 and 42 ± 2 yr (P < 0.001) at diagnosis. Patients with multiple endocrine neoplasia type 2 and neurofibromatosis type 1, all with epinephrine-producing tumors, were similarly diagnosed with disease at a later age than patients with tumors that lacked appreciable epinephrine production secondary to mutations of von Hippel-Lindau and succinate dehydrogenase genes (40 ± 2 vs. 31 ± 1 yr, P < 0.001). Among the latter patients, those with multifocal tumors were diagnosed earlier than those with solitary tumors (19 ± 3 vs. 34 ± 2 yr, P < 0.001). CONCLUSIONS The variations in ages at diagnosis associated with different tumor catecholamine phenotypes and locations suggest origins of PPGLs from different chromaffin progenitor cells with variable susceptibility to disease causing mutations. Different optimal age cut-offs for mutation testing are indicated for patients with and without epinephrine-producing tumors (44-49 vs. 30-35 yr, respectively).
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Affiliation(s)
- Graeme Eisenhofer
- Institute of Clinical Chemistry and Laboratory Medicine, Department of Medicine III, University of Dresden, 01307 Dresden, Germany.
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Eisenhofer G, Pacak K, Huynh TT, Qin N, Bratslavsky G, Linehan WM, Mannelli M, Friberg P, Grebe SK, Timmers HJ, Bornstein SR, Lenders JWM. Catecholamine metabolomic and secretory phenotypes in phaeochromocytoma. Endocr Relat Cancer 2011; 18:97-111. [PMID: 21051559 PMCID: PMC3671349 DOI: 10.1677/erc-10-0211] [Citation(s) in RCA: 149] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Phaeochromocytomas and paragangliomas (PPGLs) are highly heterogeneous tumours with variable catecholamine biochemical phenotypes and diverse hereditary backgrounds. This analysis of 18 catecholamine-related plasma and urinary biomarkers in 365 patients with PPGLs and 846 subjects without PPGLs examined how catecholamine metabolomic profiles are impacted by hereditary background and relate to variable hormone secretion. Catecholamine secretion was assessed in a subgroup of 156 patients from whom tumour tissue was available for measurements of catecholamine contents. Among all analytes, the free catecholamine O-methylated metabolites measured in plasma showed the largest tumour-related increases relative to the reference group. Patients with tumours due to multiple endocrine neoplasia type 2 and neurofibromatosis type 1 (NF1) showed similar catecholamine metabolite and secretory profiles to patients with adrenaline-producing tumours and no evident hereditary background. Tumours from these three patient groups contained higher contents of catecholamines, but secreted the hormones at lower rates than tumours that did not contain appreciable adrenaline, the latter including PPGLs due to von Hippel-Lindau (VHL) and succinate dehydrogenase (SDH) gene mutations. Large increases of plasma dopamine and its metabolites additionally characterised patients with PPGLs due to the latter mutations, whereas patients with NF1 were characterised by large increases in plasma dihydroxyphenylglycol and dihydroxyphenylacetic acid, the deaminated metabolites of noradrenaline and dopamine. This analysis establishes the utility of comprehensive catecholamine metabolite profiling for characterising the distinct and highly diverse catecholamine metabolomic and secretory phenotypes among different groups of patients with PPGLs. The data further suggest developmental origins of PPGLs from different populations of chromaffin cell progenitors.
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Affiliation(s)
- Graeme Eisenhofer
- Institute of Clinical Chemistry and Laboratory Medicine, University of Dresden, 01307 Dresden, Germany.
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Plank JL, Mundell NA, Frist AY, LeGrone AW, Kim T, Musser MA, Walter TJ, Labosky PA. Influence and timing of arrival of murine neural crest on pancreatic beta cell development and maturation. Dev Biol 2011; 349:321-30. [PMID: 21081123 PMCID: PMC3019241 DOI: 10.1016/j.ydbio.2010.11.013] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2010] [Revised: 10/27/2010] [Accepted: 11/05/2010] [Indexed: 12/30/2022]
Abstract
Interactions between cells from the ectoderm and mesoderm influence development of the endodermally-derived pancreas. While much is known about how mesoderm regulates pancreatic development, relatively little is understood about how and when the ectodermally-derived neural crest regulates pancreatic development and specifically, beta cell maturation. A previous study demonstrated that signals from the neural crest regulate beta cell proliferation and ultimately, beta cell mass. Here, we expand on that work to describe timing of neural crest arrival at the developing pancreatic bud and extend our knowledge of the non-cell autonomous role for neural crest derivatives in the process of beta cell maturation. We demonstrated that murine neural crest entered the pancreatic mesenchyme between the 26 and 27 somite stages (approximately 10.0 dpc) and became intermingled with pancreatic progenitors as the epithelium branched into the surrounding mesenchyme. Using a neural crest-specific deletion of the Forkhead transcription factor Foxd3, we ablated neural crest cells that migrate to the pancreatic primordium. Consistent with previous data, in the absence of Foxd3, and therefore the absence of neural crest cells, proliferation of insulin-expressing cells and insulin-positive area are increased. Analysis of endocrine cell gene expression in the absence of neural crest demonstrated that, although the number of insulin-expressing cells was increased, beta cell maturation was significantly impaired. Decreased MafA and Pdx1 expression illustrated the defect in beta cell maturation; we discovered that without neural crest, there was a reduction in the percentage of insulin-positive cells that co-expressed Glut2 and Pdx1 compared to controls. In addition, transmission electron microscopy analyses revealed decreased numbers of characteristic insulin granules and the presence of abnormal granules in insulin-expressing cells from mutant embryos. Together, these data demonstrate that the neural crest is a critical regulator of beta cell development on two levels: by negatively regulating beta cell proliferation and by promoting beta cell maturation.
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Affiliation(s)
- Jennifer L. Plank
- Department of Cell and Developmental Biology, Vanderbilt University Medical Center, 1211 Medical Center Dr, Nashville, TN 37232, USA
- Center for Stem Cell Biology, Vanderbilt University Medical Center, 1211 Medical Center Dr, Nashville, TN 37232, USA
- Program in Developmental Biology, Vanderbilt University Medical Center, 1211 Medical Center Dr, Nashville, TN 37232, USA
| | - Nathan A. Mundell
- Center for Stem Cell Biology, Vanderbilt University Medical Center, 1211 Medical Center Dr, Nashville, TN 37232, USA
- Program in Developmental Biology, Vanderbilt University Medical Center, 1211 Medical Center Dr, Nashville, TN 37232, USA
- Department of Pharmacology, Vanderbilt University Medical Center, 1211 Medical Center Dr, Nashville, TN 37232, USA
| | - Audrey Y. Frist
- Department of Cell and Developmental Biology, Vanderbilt University Medical Center, 1211 Medical Center Dr, Nashville, TN 37232, USA
- Center for Stem Cell Biology, Vanderbilt University Medical Center, 1211 Medical Center Dr, Nashville, TN 37232, USA
- Program in Developmental Biology, Vanderbilt University Medical Center, 1211 Medical Center Dr, Nashville, TN 37232, USA
| | - Alison W. LeGrone
- Department of Cell and Developmental Biology, Vanderbilt University Medical Center, 1211 Medical Center Dr, Nashville, TN 37232, USA
- Center for Stem Cell Biology, Vanderbilt University Medical Center, 1211 Medical Center Dr, Nashville, TN 37232, USA
- Program in Developmental Biology, Vanderbilt University Medical Center, 1211 Medical Center Dr, Nashville, TN 37232, USA
| | - Thomas Kim
- Diabetes Research Training Center, Vanderbilt University Medical Center, 1211 Medical Center Dr, Nashville, TN 37232, USA
| | - Melissa A. Musser
- Center for Human Genetics Research, Vanderbilt University Medical Center, 1211 Medical Center Dr, Nashville, TN 37232, USA
| | - Teagan J. Walter
- Department of Cell and Developmental Biology, Vanderbilt University Medical Center, 1211 Medical Center Dr, Nashville, TN 37232, USA
- Center for Stem Cell Biology, Vanderbilt University Medical Center, 1211 Medical Center Dr, Nashville, TN 37232, USA
- Program in Developmental Biology, Vanderbilt University Medical Center, 1211 Medical Center Dr, Nashville, TN 37232, USA
| | - Patricia A. Labosky
- Department of Cell and Developmental Biology, Vanderbilt University Medical Center, 1211 Medical Center Dr, Nashville, TN 37232, USA
- Center for Stem Cell Biology, Vanderbilt University Medical Center, 1211 Medical Center Dr, Nashville, TN 37232, USA
- Program in Developmental Biology, Vanderbilt University Medical Center, 1211 Medical Center Dr, Nashville, TN 37232, USA
- Department of Pharmacology, Vanderbilt University Medical Center, 1211 Medical Center Dr, Nashville, TN 37232, USA
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Hong SJ, Huh YH, Leung A, Choi HJ, Ding Y, Kang UJ, Yoo SH, Buettner R, Kim KS. Transcription factor AP-2β regulates the neurotransmitter phenotype and maturation of chromaffin cells. Mol Cell Neurosci 2010; 46:245-51. [PMID: 20875861 DOI: 10.1016/j.mcn.2010.09.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2010] [Revised: 08/16/2010] [Accepted: 09/14/2010] [Indexed: 12/24/2022] Open
Abstract
During development, sympathetic neurons and chromaffin cells originate from bipotential sympathoadrenal (SA) progenitors arising from neural crests (NC) in the trunk regions. Recently, we showed that AP-2β, a member of the AP2 family, plays a critical role in the development of sympathetic neurons and locus coeruleus and their norepinephrine (NE) neurotransmitter phenotype. In the present study, we investigated the potential role of AP-2β in the development of NC-derived neuroendocrine chromaffin cells of the adrenal medulla and the epinephrine (EPI) phenotype determination. In support of its role in chromaffin cell development, AP-2β is prominently expressed in both embryonic and adult adrenal medulla. In adrenal chromaffin cells of the AP-2β(-/-) mouse, the expression levels of catecholamine biosynthesizing enzymes, dopamine β-hydroxylase (DBH) and phenylethanolamine-N-methyl-transferase (PNMT), as well as the SA-specific transcription factor, Phox2b, are significantly reduced compared to wild type. In addition, ultrastructural analysis demonstrated that the formation of large secretory vesicles, a hallmark of differentiated chromaffin cells, is defective in AP-2β(-/-) mice. Furthermore, the level of EPI content is largely diminished (>80%) in the adrenal gland of AP-2β(-/-) mice. Chromatin immunoprecipitation (ChIP) assays of rat adrenal gland showed that AP-2β binds to the upstream promoter of the PNMT gene in vivo; strongly suggesting that it is a direct target gene. Overall, our data suggest that AP-2β plays critical roles in the epinephrine phenotype and maturation of adrenal chromaffin cells.
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Affiliation(s)
- Seok Jong Hong
- Molecular Neurobiology Laboratory, McLean Hospital, Harvard Medical School, 115 Mill Street, Belmont, MA 02478, USA.
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Metz H, Wray S. Use of mutant mouse lines to investigate origin of gonadotropin-releasing hormone-1 neurons: lineage independent of the adenohypophysis. Endocrinology 2010; 151:766-73. [PMID: 20008041 PMCID: PMC2817619 DOI: 10.1210/en.2009-0875] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Mutant mouse lines have been used to study the development of specific neuronal populations and brain structures as well as behaviors. In this report, single- and double-mutant mice were used to examine the lineage of GnRH-1 cells. GnRH is essential for vertebrate reproduction, with either GnRH-1 or GnRH-3 controlling release of gonadotropins from the anterior pituitary, depending on the species. It is clear that the neuroendocrine GnRH cells migrate from extracentral nervous system locations into the forebrain. However, the embryonic origin of GnRH-1 and GnRH-3 cells is controversial and has been suggested to be nasal placode, adenohypophyseal (anterior pituitary) placode, or neural crest, again dependent on the species examined. We found that mutant mice with either missing or disrupted anterior pituitaries (Gli2(-/-), Gli1(-/-)Gli2(-/-), and Lhx3(-/-)) exhibit a normal GnRH-1 neuronal population and that these cells are still found associated with the developing vomeronasal organ. These results indicate that in mice, GnRH-1 cells develop independent of the adenohypophyseal placode and are associated early with the formation of the nasal placode.
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Affiliation(s)
- Hillery Metz
- Cellular and Developmental Neurobiology Section, National Institute of Neurological Disorder and Stroke, National Institutes of Health, Bethesda, Maryland 20892, USA
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Composite Medullary and Papillary Thyroid Carcinoma In a Patient With MEN 2B. AJSP-REVIEWS AND REPORTS 2009. [DOI: 10.1097/pcr.0b013e3181c75a44] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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