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Venkat A, Carlino MJ, Lawton BR, Prasad ML, Amodio M, Gibson CE, Zeiss CJ, Youlten SE, Krishnaswamy S, Krause DS. Single-cell analysis reveals transcriptional dynamics in healthy primary parathyroid tissue. Genome Res 2024; 34:837-850. [PMID: 38977309 PMCID: PMC11293540 DOI: 10.1101/gr.278215.123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2023] [Accepted: 06/03/2024] [Indexed: 07/10/2024]
Abstract
Studies on human parathyroids are generally limited to hyperfunctioning glands owing to the difficulty in obtaining normal human tissue. We therefore obtained non-human primate (NHP) parathyroids to provide a suitable alternative for sequencing that would bear a close semblance to human organs. Single-cell RNA expression analysis of parathyroids from four healthy adult M. mulatta reveals a continuous trajectory of epithelial cell states. Pseudotime analysis based on transcriptomic signatures suggests a progression from GCM2 hi progenitors to mature parathyroid hormone (PTH)-expressing epithelial cells with increasing core mitochondrial transcript abundance along pseudotime. We sequenced, as a comparator, four histologically characterized hyperfunctioning human parathyroids with varying oxyphil and chief cell abundance and leveraged advanced computational techniques to highlight similarities and differences from non-human primate parathyroid expression dynamics. Predicted cell-cell communication analysis reveals abundant endothelial cell interactions in the parathyroid cell microenvironment in both human and NHP parathyroid glands. We show abundant RARRES2 transcripts in both human adenoma and normal primate parathyroid cells and use coimmunostaining to reveal high levels of RARRES2 protein (also known as chemerin) in PTH-expressing cells, which could indicate that RARRES2 plays an unrecognized role in parathyroid endocrine function. The data obtained are the first single-cell RNA transcriptome to characterize nondiseased parathyroid cell signatures and to show a transcriptomic progression of cell states within normal parathyroid glands, which can be used to better understand parathyroid cell biology.
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Affiliation(s)
- Aarthi Venkat
- Computational Biology and Bioinformatics Program, Yale University, New Haven, Connecticut 06511, USA
| | - Maximillian J Carlino
- Yale Stem Cell Center, Yale School of Medicine, New Haven, Connecticut 06520, USA
- Department of Laboratory Medicine, Yale School of Medicine, New Haven, Connecticut 06510, USA
| | - Betty R Lawton
- Yale Stem Cell Center, Yale School of Medicine, New Haven, Connecticut 06520, USA
- Department of Laboratory Medicine, Yale School of Medicine, New Haven, Connecticut 06510, USA
| | - Manju L Prasad
- Department of Pathology, Yale School of Medicine, New Haven, Connecticut 06520-8023, USA
| | - Matthew Amodio
- Department of Computer Science, Yale University, New Haven, Connecticut 06511, USA
- Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, USA
| | - Courtney E Gibson
- Department of Surgery, Yale School of Medicine, New Haven, Connecticut 06520, USA
| | - Caroline J Zeiss
- Department of Comparative Medicine, Yale School of Medicine, New Haven, Connecticut 06520, USA
| | - Scott E Youlten
- Department of Genetics, Yale School of Medicine, New Haven, Connecticut 06510, USA
| | - Smita Krishnaswamy
- Computational Biology and Bioinformatics Program, Yale University, New Haven, Connecticut 06511, USA;
- Yale Stem Cell Center, Yale School of Medicine, New Haven, Connecticut 06520, USA
- Department of Computer Science, Yale University, New Haven, Connecticut 06511, USA
- Department of Genetics, Yale School of Medicine, New Haven, Connecticut 06510, USA
| | - Diane S Krause
- Yale Stem Cell Center, Yale School of Medicine, New Haven, Connecticut 06520, USA;
- Department of Laboratory Medicine, Yale School of Medicine, New Haven, Connecticut 06510, USA
- Department of Pathology, Yale School of Medicine, New Haven, Connecticut 06520-8023, USA
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2
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Kim M, Gorelick AN, Vàzquez-García I, Williams MJ, Salehi S, Shi H, Weiner AC, Ceglia N, Funnell T, Park T, Boscenco S, O'Flanagan CH, Jiang H, Grewal D, Tang C, Rusk N, Gammage PA, McPherson A, Aparicio S, Shah SP, Reznik E. Single-cell mtDNA dynamics in tumors is driven by coregulation of nuclear and mitochondrial genomes. Nat Genet 2024; 56:889-899. [PMID: 38741018 PMCID: PMC11096122 DOI: 10.1038/s41588-024-01724-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Accepted: 03/20/2024] [Indexed: 05/16/2024]
Abstract
The extent of cell-to-cell variation in tumor mitochondrial DNA (mtDNA) copy number and genotype, and the phenotypic and evolutionary consequences of such variation, are poorly characterized. Here we use amplification-free single-cell whole-genome sequencing (Direct Library Prep (DLP+)) to simultaneously assay mtDNA copy number and nuclear DNA (nuDNA) in 72,275 single cells derived from immortalized cell lines, patient-derived xenografts and primary human tumors. Cells typically contained thousands of mtDNA copies, but variation in mtDNA copy number was extensive and strongly associated with cell size. Pervasive whole-genome doubling events in nuDNA associated with stoichiometrically balanced adaptations in mtDNA copy number, implying that mtDNA-to-nuDNA ratio, rather than mtDNA copy number itself, mediated downstream phenotypes. Finally, multimodal analysis of DLP+ and single-cell RNA sequencing identified both somatic loss-of-function and germline noncoding variants in mtDNA linked to heteroplasmy-dependent changes in mtDNA copy number and mitochondrial transcription, revealing phenotypic adaptations to disrupted nuclear/mitochondrial balance.
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Affiliation(s)
- Minsoo Kim
- Tri-Institutional PhD Program in Computational Biology & Medicine, Weill Cornell Medicine, New York City, NY, USA
- Computational Oncology, Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York City, NY, USA
| | - Alexander N Gorelick
- Computational Oncology, Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York City, NY, USA
- Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York City, NY, USA
| | - Ignacio Vàzquez-García
- Computational Oncology, Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York City, NY, USA
| | - Marc J Williams
- Computational Oncology, Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York City, NY, USA
| | - Sohrab Salehi
- Computational Oncology, Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York City, NY, USA
| | - Hongyu Shi
- Computational Oncology, Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York City, NY, USA
| | - Adam C Weiner
- Computational Oncology, Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York City, NY, USA
| | - Nick Ceglia
- Computational Oncology, Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York City, NY, USA
| | - Tyler Funnell
- Computational Oncology, Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York City, NY, USA
| | - Tricia Park
- Computational Oncology, Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York City, NY, USA
| | - Sonia Boscenco
- Computational Oncology, Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York City, NY, USA
| | - Ciara H O'Flanagan
- Department of Molecular Oncology, British Columbia Cancer Research Centre, Vancouver, British Columbia, Canada
| | - Hui Jiang
- Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York City, NY, USA
| | - Diljot Grewal
- Computational Oncology, Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York City, NY, USA
| | - Cerise Tang
- Computational Oncology, Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York City, NY, USA
| | - Nicole Rusk
- Computational Oncology, Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York City, NY, USA
| | - Payam A Gammage
- Institute of Cancer Sciences, University of Glasgow, Glasgow, UK
- CRUK Beatson Institute, Glasgow, UK
| | - Andrew McPherson
- Computational Oncology, Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York City, NY, USA
| | - Sam Aparicio
- Department of Molecular Oncology, British Columbia Cancer Research Centre, Vancouver, British Columbia, Canada
| | - Sohrab P Shah
- Computational Oncology, Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York City, NY, USA.
| | - Ed Reznik
- Computational Oncology, Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York City, NY, USA.
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3
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Mao J, You H, Wang M, Ba Y, Qian J, Cheng P, Lu C, Chen J. Single-cell RNA sequencing reveals transdifferentiation of parathyroid chief cells into oxyphil cells in patients with uremic secondary hyperparathyroidism. Kidney Int 2024; 105:562-581. [PMID: 38142040 DOI: 10.1016/j.kint.2023.11.027] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Revised: 10/28/2023] [Accepted: 11/17/2023] [Indexed: 12/25/2023]
Abstract
The parathyroid gland is one of the main organs that regulate calcium and phosphorus metabolism. It is mainly composed of chief cells and oxyphil cells. Oxyphil cell counts are low in the parathyroid glands of healthy adults but are dramatically increased in patients with uremia and secondary hyperparathyroidism (SHPT). Increased oxyphil cell counts are related to drug treatment resistance, but the origin of oxyphil cells and the mechanism of proliferation remain unknown. Herein, three types of parathyroid nodules (chief cell nodules, oxyphil cell nodules and mixed nodules, respectively) excised from parathyroid glands of uremic SHPT patients were used for single-cell RNA sequencing (scRNA-seq), other molecular biology studies, and transplantation into nude mice. Through scRNA-seq of parathyroid mixed nodules from three patients with uremic SHPT, we established the first transcriptomic map of the human parathyroid and found a chief-to-oxyphil cell transdifferentiation characterized by gradual mitochondrial enrichment associated with the uremic milieu. Notably, the mitochondrial enrichment and cellular proliferation of chief cell and oxyphil cell nodules decreased significantly after leaving the uremic milieu via transplantation into nude mice. Remarkably, the phenotype of oxyphil cell nodules improved significantly in the nude mice as characterized by decreased mitochondrial content and the proportion of oxyphil cells to chief cells. Thus, our study provides a comprehensive single-cell transcriptome atlas of the human parathyroid and elucidates the origin of parathyroid oxyphil cells and their underlying transdifferentiating mechanism. These findings enhance our understanding of parathyroid disease and may open new treatment perspectives for patients with chronic kidney disease.
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Affiliation(s)
- Jianping Mao
- Division of Nephrology, Huashan Hospital, Fudan University, Shanghai, China; National Clinical Research Center for Aging and Medicine, Huashan Hospital, Fudan University, Shanghai, China
| | - Huaizhou You
- Division of Nephrology, Huashan Hospital, Fudan University, Shanghai, China; National Clinical Research Center for Aging and Medicine, Huashan Hospital, Fudan University, Shanghai, China
| | - Mengjing Wang
- Division of Nephrology, Huashan Hospital, Fudan University, Shanghai, China; National Clinical Research Center for Aging and Medicine, Huashan Hospital, Fudan University, Shanghai, China
| | | | - Jing Qian
- Division of Nephrology, Huashan Hospital, Fudan University, Shanghai, China
| | - Ping Cheng
- Division of Nephrology, Huashan Hospital, Fudan University, Shanghai, China
| | - Chuhan Lu
- Division of Nephrology, Huashan Hospital, Fudan University, Shanghai, China
| | - Jing Chen
- Division of Nephrology, Huashan Hospital, Fudan University, Shanghai, China; National Clinical Research Center for Aging and Medicine, Huashan Hospital, Fudan University, Shanghai, China.
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4
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Miller RL, Rivera J, Lichtiger L, Govindarajulu US, Jung KH, Lovinsky-Desir S, Perera F, Balcer Whaley S, Newman M, Grant TL, McCormack M, Perzanowski M, Matsui EC. Associations between mitochondrial biomarkers, urban residential exposures and childhood asthma outcomes over 6 months. ENVIRONMENTAL RESEARCH 2023; 239:117342. [PMID: 37813137 PMCID: PMC10843300 DOI: 10.1016/j.envres.2023.117342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 09/26/2023] [Accepted: 10/07/2023] [Indexed: 10/11/2023]
Abstract
Determining biomarkers of responses to environmental exposures and evaluating whether they predict respiratory outcomes may help optimize environmental and medical approaches to childhood asthma. Relative mitochondrial (mt) DNA abundance and other potential mitochondrial indicators of oxidative stress may provide a sensitive metric of the child's shifting molecular responses to its changing environment. We leveraged two urban childhood cohorts (Environmental Control as Add-on Therapy in Childhood Asthma (ECATCh); Columbia Center for Children's Environmental Health (CCCEH)) to ascertain whether biomarkers in buccal mtDNA associate with airway inflammation and altered lung function over 6 months of time and capture biologic responses to multiple external stressors such as indoor allergens and fine particulate matter (PM2.5). Relative mtDNA content was amplified by qPCR and methylation of transfer RNA phenylalanine/rRNA 12S (TF/RNR1), cytochrome c oxidase (CO1), and carboxypeptidase O (CPO) was measured by pyrosequencing. Data on residential exposures and respiratory outcomes were harmonized between the two cohorts. Repeated measures and multiple regression models were utilized to assess relationships between mitochondrial biomarkers, respiratory outcomes, and residential exposures (PM2.5, allergens), adjusted for potential confounders and time-varying asthma. We found across the 6 month visits, a 0.64 fold higher level of TF/RNR1 methylation was detected among those with asthma in comparison to those without asthma ((parameter estimate (PE) 0.64, standard error 0.28, p = 0.03). In prospective analyses, CPO methylation was associated with subsequent reduced forced vital capacity (FVC; PE -0.03, standard error 0.01, p = 0.02). Bedroom dust mouse allergen, but not indoor PM2.5, was associated with higher methylation of TF/RNR1 (PE 0.015, standard error 0.006, p = 0.01). Select mtDNA measures in buccal cells may indicate children's responses to toxic environmental exposures and associate selectively with asthma and lung function.
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Affiliation(s)
- Rachel L Miller
- Division of Clinical Immunology, Department of Medicine, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, New York, NY, 10029, USA; Columbia Center for Childrens Environmental Health, Columbia University Mailman School of Public Health, 722 West 168th Street, New York, NY, 10032, USA.
| | - Janelle Rivera
- Division of Clinical Immunology, Department of Medicine, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, New York, NY, 10029, USA
| | - Lydia Lichtiger
- Division of Clinical Immunology, Department of Medicine, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, New York, NY, 10029, USA
| | - Usha S Govindarajulu
- Center for Biostatistics, Department of Population Health Science and Policy, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, New York, NY, 10029, USA
| | - Kyung Hwa Jung
- Division of Pediatric Pulmonary, Columbia University Irving Medical Center, 630 W. 168th St, New York, NY, 10032, USA
| | - Stephanie Lovinsky-Desir
- Division of Pediatric Pulmonary, Columbia University Irving Medical Center, 630 W. 168th St, New York, NY, 10032, USA
| | - Frederica Perera
- Columbia Center for Childrens Environmental Health, Columbia University Mailman School of Public Health, 722 West 168th Street, New York, NY, 10032, USA
| | - Susan Balcer Whaley
- Department of Population Health, Dell Medical School University of Texas at Austin, 1601 Trinity St., Bldg. B, Stop Z0500, Austin, TX, 78712, USA
| | - Michelle Newman
- Department of Epidemiology and Public Health, University of Maryland, 10 S. Pine St, MSTF 3-34, Baltimore, MD, 21201, USA
| | - Torie L Grant
- Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA; Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Meredith McCormack
- Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Matthew Perzanowski
- Columbia Center for Childrens Environmental Health, Columbia University Mailman School of Public Health, 722 West 168th Street, New York, NY, 10032, USA
| | - Elizabeth C Matsui
- Department of Population Health, Dell Medical School University of Texas at Austin, 1601 Trinity St., Bldg. B, Stop Z0500, Austin, TX, 78712, USA
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5
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Hametner S, Silvaieh S, Thurnher M, Dal-Bianco A, Cetin H, Ponleitner M, Zebenholzer K, Pemp B, Trattnig S, Rössler K, Berger T, Lassmann H, Hainfellner JA, Bsteh G. A case of primary optic pathway demyelination caused by oncocytic oligodendrogliopathy of unknown origin. Acta Neuropathol Commun 2022; 10:160. [DOI: 10.1186/s40478-022-01462-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Accepted: 10/13/2022] [Indexed: 11/11/2022] Open
Abstract
AbstractWe report the case of a 22-year-old woman presenting with an acute onset of dizziness, gait dysbalance and blurred vision. Magnetic resonance imaging included 3 Tesla and 7 Tesla imaging and revealed a T2-hyperintense, T1-hypointense, non-contrast-enhancing lesion strictly confined to the white matter affecting the right optic radiation. An extensive ophthalmologic examination yielded mild quadrantanopia but no signs of optic neuropathy. The lesion was biopsied. The neuropathological evaluation revealed a demyelinating lesion with marked tissue vacuolization and granular myelin disintegration accompanied by mild T cell infiltration and a notable absence of myelin uptake by macrophages. Oligodendrocytes were strikingly enlarged, displaying oncocytic characteristics and showed cytoplasmic accumulation of mitochondria, which had mildly abnormal morphology on electron microscopy. The diagnosis of multiple sclerosis was excluded. Harding's disease, a variant of Leber's hereditary optic neuropathy, was then suspected. However, neither PCR for relevant mutations nor whole exome sequencing yielded known pathogenetic mutations in the patient's genome. We present a pattern of demyelinating tissue injury of unknown etiology with an oncocytic change of oligodendrocytes and a lack of adequate phagocytic response by macrophages, which to the best of our knowledge, has not been described before.
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Tsybrovskyy O, De Luise M, de Biase D, Caporali L, Fiorini C, Gasparre G, Carelli V, Hackl D, Imamovic L, Haim S, Sobrinho‐Simões M, Tallini G. Papillary thyroid carcinoma tall cell variant shares accumulation of mitochondria, mitochondrial DNA mutations, and loss of oxidative phosphorylation complex I integrity with oncocytic tumors. J Pathol Clin Res 2022; 8:155-168. [PMID: 34792302 PMCID: PMC8822387 DOI: 10.1002/cjp2.247] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Revised: 09/14/2021] [Accepted: 09/27/2021] [Indexed: 02/05/2023]
Abstract
Papillary thyroid carcinoma tall cell variant (PTC-TCV), a form of PTC regarded as an aggressive subtype, shares several morphologic features with oncocytic tumors. Pathogenic homoplasmic/highly heteroplasmic somatic mitochondrial DNA (mtDNA) mutations, usually affecting oxidative phosphorylation (OXPHOS) complex I subunits, are hallmarks of oncocytic cells. To clarify the relationship between PTC-TCV and oncocytic thyroid tumors, 17 PTC-TCV and 16 PTC non-TCV controls (cPTC) were subjected to: (1) transmission electron microscopy (TEM) to assess mitochondria accumulation, (2) next-generation sequencing to analyze mtDNA and nuclear genes frequently mutated in thyroid carcinoma, and (3) immunohistochemistry (IHC) for prohibitin and complex I subunit NDUFS4 to evaluate OXPHOS integrity. TEM showed replacement of cytoplasm by mitochondria in PTC-TCV but not in cPTC cells. All 17 PTC-TCV had at least one mtDNA mutation, totaling 21 mutations; 3/16 cPTC (19%) had mtDNA mutations (p < 0.001). PTC-TCV mtDNA mutations were homoplasmic/highly heteroplasmic, 16/21 (76%) mapping within mtDNA-encoded complex I subunits. MtDNA mutations in cPTC were homoplasmic in 2 cases and at low heteroplasmy in the third case, 2/3 mapping to mtDNA-encoded complex I subunits; 2/3 cPTC with mtDNA mutations had small tall cell subpopulations. PTC-TCV showed strong prohibitin expression and cPTC low-level expression, consistent with massive and limited mitochondrial content, respectively. All 17 PTC-TCV showed NDUFS4 loss (partial or complete) and 3 of 16 cPTC (19%) had (partial) NDUFS4 loss, consistent with lack of complex I integrity in PTC-TCV (p < 0.001). IHC loss of NDUFS4 was associated with mtDNA mutations (p < 0.001). Four BRAF V600E mutated PTCs had loss of NDUSF4 expression limited to neoplastic cell subpopulations with tall cell features, indicating that PTCs first acquire BRAF V600E and then mtDNA mutations. Similar to oncocytic thyroid tumors, PTC-TCV is characterized by mtDNA mutations, massive accumulation of mitochondria, and loss of OXPHOS integrity. IHC loss of NDUFS-4 can be used as a surrogate marker for OXPHOS disruption and to reliably diagnose PTC-TCV.
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Affiliation(s)
- Oleksiy Tsybrovskyy
- Diagnostic and Research Institute of PathologyMedical University of GrazGrazAustria
- Department of Clinical PathologyOrdensklinikum/Hospital of the Sisters of CharityLinzAustria
| | - Monica De Luise
- Department of Medical and Surgical Sciences (DIMEC) and Center for Applied Biomedical Research (CRBA)University of BolognaBolognaItaly
| | - Dario de Biase
- Department of Pharmacy and Biotechnology (FABIT)University of BolognaBolognaItaly
| | - Leonardo Caporali
- Programma di NeurogeneticaIRCCS Istituto delle Scienze NeurologicheBolognaItaly
| | - Claudio Fiorini
- Programma di NeurogeneticaIRCCS Istituto delle Scienze NeurologicheBolognaItaly
| | - Giuseppe Gasparre
- Department of Medical and Surgical Sciences (DIMEC) and Center for Applied Biomedical Research (CRBA)University of BolognaBolognaItaly
| | - Valerio Carelli
- Programma di NeurogeneticaIRCCS Istituto delle Scienze NeurologicheBolognaItaly
- Department of Biomedical and Neuromotor Sciences (DIBINEM)University of BolognaBolognaItaly
| | - Dominik Hackl
- Department of General and Visceral SurgeryOrdensklinikum/Hospital of the Sisters of CharityLinzAustria
| | - Larisa Imamovic
- Department of Nuclear Medicine & Endocrinology, PET‐CT Center LinzOrdensklinikum/Hospital of the Sisters of CharityLinzAustria
| | - Silke Haim
- Department of Nuclear Medicine & Endocrinology, PET‐CT Center LinzOrdensklinikum/Hospital of the Sisters of CharityLinzAustria
| | - Manuel Sobrinho‐Simões
- IpatimupInstitute of Molecular Pathology and Immunology of the University of PortoPortoPortugal
| | - Giovanni Tallini
- Department of Experimental, Diagnostic and Specialty Medicine (DIMES)University of BolognaBolognaItaly
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7
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Hu Y, Zhang X, Wang O, Xing X, Cui M, Wang M, Song C, Liao Q. Spectrum of mitochondrial genomic variation in parathyroid neoplasms. Endocrine 2021; 74:690-697. [PMID: 34296389 DOI: 10.1007/s12020-021-02825-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Accepted: 07/10/2021] [Indexed: 10/20/2022]
Abstract
PURPOSE Mitochondrial DNA (mtDNA) variations have been implicated in various cancer types. Several attempts have been made in benign parathyroid adenoma (PA); however, mtDNA variants and copy number alterations have not been investigated in parathyroid carcinoma (PC). The present study aimed to explore the variations in the mitochondrial genome in parathyroid neoplasms. METHODS In this study, ultradeep targeted sequencing of mtDNA was performed in 12 cases with PC and 25 cases with PA. Germline and somatic variants in the mitochondrial genome were analysed according to clinical features. The mtDNA copy number relative to nuclear DNA was measured. RESULTS A total of 821 germline variants and 23 somatic mutations were identified. All 160 germline nonsynonymous variants in the coding sequence (CDS) were predicted to be likely benign, and germline variants frequently occurred (26.3%) in the displacement loop region. Tumour somatic mutation in a CDS with heteroplasmic factor (HF) >0.8 showed a higher mtDNA copy number (p = 0.039). Using Spearman's rank test, tumour mtDNA copy number revealed a positive correlation with serum levels of intact parathyroid hormone and calcium. CONCLUSION Our results demonstrate that null recurrent mtDNA mutational hotspots were PC specific. An increased mtDNA copy number in parathyroid neoplasms was associated with somatic CDS mutations with a high HF and major clinical features. Larger cohort investigations should be performed in future analyses.
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Affiliation(s)
- Ya Hu
- Department of General Surgery, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Xiang Zhang
- Department of General Surgery, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Ou Wang
- Department of Endocrinology, Laboratory of Endocrinology, National Health Commission, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Xiaoping Xing
- Department of Endocrinology, Laboratory of Endocrinology, National Health Commission, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Ming Cui
- Department of General Surgery, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Mengyi Wang
- Department of General Surgery, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Chengli Song
- Novogene Bioinformatics Institute, Beijing, China
| | - Quan Liao
- Department of General Surgery, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China.
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8
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De Luise M, Iommarini L, Marchio L, Tedesco G, Coadă CA, Repaci A, Turchetti D, Tardio ML, Salfi N, Pagotto U, Kurelac I, Porcelli AM, Gasparre G. Pathogenic Mitochondrial DNA Mutation Load Inversely Correlates with Malignant Features in Familial Oncocytic Parathyroid Tumors Associated with Hyperparathyroidism-Jaw Tumor Syndrome. Cells 2021; 10:2920. [PMID: 34831144 PMCID: PMC8616364 DOI: 10.3390/cells10112920] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 10/22/2021] [Accepted: 10/26/2021] [Indexed: 11/23/2022] Open
Abstract
While somatic disruptive mitochondrial DNA (mtDNA) mutations that severely affect the respiratory chain are counter-selected in most human neoplasms, they are the genetic hallmark of indolent oncocytomas, where they appear to contribute to reduce tumorigenic potential. A correlation between mtDNA mutation type and load, and the clinical outcome of a tumor, corroborated by functional studies, is currently lacking. Recurrent familial oncocytomas are extremely rare entities, and they offer the chance to investigate the determinants of oncocytic transformation and the role of both germline and somatic mtDNA mutations in cancer. We here report the first family with Hyperparathyroidism-Jaw Tumor (HPT-JT) syndrome showing the inherited predisposition of four individuals to develop parathyroid oncocytic tumors. MtDNA sequencing revealed a rare ribosomal RNA mutation in the germline of all HPT-JT affected individuals whose pathogenicity was functionally evaluated via cybridization technique, and which was counter-selected in the most aggressive infiltrating carcinoma, but positively selected in adenomas. In all tumors different somatic mutations accumulated on this genetic background, with an inverse clear-cut correlation between the load of pathogenic mtDNA mutations and the indolent behavior of neoplasms, highlighting the importance of the former both as modifiers of cancer fate and as prognostic markers.
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Affiliation(s)
- Monica De Luise
- Department of Medical and Surgical Sciences (DIMEC), University of Bologna, 40138 Bologna, Italy; (M.D.L.); (L.M.); (G.T.); (C.A.C.); (D.T.); (U.P.); (I.K.)
- Center for Applied Biomedical Research (CRBA), University of Bologna, 40138 Bologna, Italy; (L.I.); (A.M.P.)
| | - Luisa Iommarini
- Center for Applied Biomedical Research (CRBA), University of Bologna, 40138 Bologna, Italy; (L.I.); (A.M.P.)
- Department of Pharmacy and Biotechnology (FABIT), University of Bologna, 40126 Bologna, Italy
| | - Lorena Marchio
- Department of Medical and Surgical Sciences (DIMEC), University of Bologna, 40138 Bologna, Italy; (M.D.L.); (L.M.); (G.T.); (C.A.C.); (D.T.); (U.P.); (I.K.)
- Center for Applied Biomedical Research (CRBA), University of Bologna, 40138 Bologna, Italy; (L.I.); (A.M.P.)
| | - Greta Tedesco
- Department of Medical and Surgical Sciences (DIMEC), University of Bologna, 40138 Bologna, Italy; (M.D.L.); (L.M.); (G.T.); (C.A.C.); (D.T.); (U.P.); (I.K.)
- Center for Applied Biomedical Research (CRBA), University of Bologna, 40138 Bologna, Italy; (L.I.); (A.M.P.)
| | - Camelia Alexandra Coadă
- Department of Medical and Surgical Sciences (DIMEC), University of Bologna, 40138 Bologna, Italy; (M.D.L.); (L.M.); (G.T.); (C.A.C.); (D.T.); (U.P.); (I.K.)
- Center for Applied Biomedical Research (CRBA), University of Bologna, 40138 Bologna, Italy; (L.I.); (A.M.P.)
| | - Andrea Repaci
- Division of Endocrinology and Diabetes Prevention and Care, IRCCS Azienda Ospedaliero-Universitaria di Bologna, 40138 Bologna, Italy;
| | - Daniela Turchetti
- Department of Medical and Surgical Sciences (DIMEC), University of Bologna, 40138 Bologna, Italy; (M.D.L.); (L.M.); (G.T.); (C.A.C.); (D.T.); (U.P.); (I.K.)
- Division of Medical Genetics, IRCSS Azienda Ospedaliero-Universitaria di Bologna, 40138 Bologna, Italy
| | - Maria Lucia Tardio
- Unit of Pathology, IRCCS S.Orsola University Hospital, 40138 Bologna, Italy;
| | - Nunzio Salfi
- Pathology Unit, IRCCS Giannina Gaslini Children’s Research Hospital, 16147 Genova, Italy;
| | - Uberto Pagotto
- Department of Medical and Surgical Sciences (DIMEC), University of Bologna, 40138 Bologna, Italy; (M.D.L.); (L.M.); (G.T.); (C.A.C.); (D.T.); (U.P.); (I.K.)
- Division of Endocrinology and Diabetes Prevention and Care, IRCCS Azienda Ospedaliero-Universitaria di Bologna, 40138 Bologna, Italy;
| | - Ivana Kurelac
- Department of Medical and Surgical Sciences (DIMEC), University of Bologna, 40138 Bologna, Italy; (M.D.L.); (L.M.); (G.T.); (C.A.C.); (D.T.); (U.P.); (I.K.)
- Center for Applied Biomedical Research (CRBA), University of Bologna, 40138 Bologna, Italy; (L.I.); (A.M.P.)
| | - Anna Maria Porcelli
- Center for Applied Biomedical Research (CRBA), University of Bologna, 40138 Bologna, Italy; (L.I.); (A.M.P.)
- Department of Pharmacy and Biotechnology (FABIT), University of Bologna, 40126 Bologna, Italy
- Interdepartmental Center of Industrial Research (CIRI) Life Science and Health Technologies, University of Bologna, 40064 Ozzano dell’Emilia, Italy
| | - Giuseppe Gasparre
- Department of Medical and Surgical Sciences (DIMEC), University of Bologna, 40138 Bologna, Italy; (M.D.L.); (L.M.); (G.T.); (C.A.C.); (D.T.); (U.P.); (I.K.)
- Center for Applied Biomedical Research (CRBA), University of Bologna, 40138 Bologna, Italy; (L.I.); (A.M.P.)
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9
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Abstract
Oncocytes are cells that have abundant eosinophilic cytoplasm due to the accumulation of mitochondria; they are also known as oxyphils. In the thyroid they have been called Hürthle cells but this is a misnomer, since Hürthle described C cells; for this reason, we propose the use of "oncocyte" as a scientific term rather than an incorrect eponym. Oncocytic change occurs in nontumorous thyroid disorders, in benign and malignant tumors of thyroid follicular cells, in tumors composed of thyroid C cells, and intrathyroidal parathyroid proliferations as well as in metastatic lesions. The morphology of primary oncocytic thyroid tumors is similar to that of their non-oncocytic counterparts but also is complicated by the cytologic features of these cells that include both abundant eosinophilic cytoplasm and large cherry red nucleoli. The molecular alterations in oncocytic thyroid tumors echo those of their non-oncocytic counterparts but in addition feature mitochondrial DNA mutations as well as chromosomal gains and losses. In this review we emphasize the importance of recognition of the spectrum of oncocytic thyroid pathology. The cell of origin, morphologic features including architecture, nuclear atypia and invasive growth, as well as high grade features such as mitoses and necrosis, enable accurate classification of these lesions. The molecular alterations underlying the pathological entity are associated with genetic alterations associated with oncocytic change. The arbitrary cut-off of 75% oncocytic change to classify a lesion as an oncocytic variant brings another complexity to the classification scheme of tumors that frequently have mixed oncocytic and non-oncocytic components. This controversial and often confusing area of thyroid pathology requires thoughtful and cautious investigation to clarify accurate diagnosis, prognosis and prediction for patients with oncocytic thyroid lesions.
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Affiliation(s)
- Sylvia L. Asa
- Department of Pathology, University Hospitals Cleveland Medical Center, Cleveland, OH, United States
- Department of Pathology, Case Western Reserve University, Cleveland, OH, United States
- Department of Pathology, University Health Network, Toronto, ON, Canada
- *Correspondence: Sylvia L. Asa, ; Ozgur Mete,
| | - Ozgur Mete
- Department of Pathology, University Health Network, Toronto, ON, Canada
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
- *Correspondence: Sylvia L. Asa, ; Ozgur Mete,
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10
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Xu K, Bai M, Bin P, Duan Y, Wu X, Liu H, Yin Y. Negative effects on newborn piglets caused by excess dietary tryptophan in the morning in sows. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2019; 99:3005-3016. [PMID: 30478950 DOI: 10.1002/jsfa.9514] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Revised: 11/22/2018] [Accepted: 11/22/2018] [Indexed: 06/09/2023]
Abstract
BACKGROUND This study investigated the effect of dynamic feeding models of dietary tryptophan on sows' performance during late pregnancy. RESULTS The average piglet birth weight and live farrowing rate from sows consuming a high-low tryptophan diet (0.39% Trp in the morning and 0.13% Trp in the afternoon) were decreased compared with those fed a 2×tryptophan diet (0.26% Trp in the morning and afternoon). Compared with the 2×tryptophan group, sow serum kynurenic acid and the newborn liver n-6:n-3 polyunsaturated fatty acid ratio were significantly higher, and sow serum taurine and newborn serum taurine, phosphoserine, cysteine and proline were lower in the high-low tryptophan diet group. Eighty-eight genes were differentially expressed in newborn piglets' livers between the 2×tryptophan and high-low groups. Genes related to cytotoxic effector regulation (major histocompatibility complex class I proteins), NADH oxidation, reactive oxygen species (ROS) metabolism and tissue development were differentially expressed between these two groups. CONCLUSION Together, the results provide information on new biomarkers in serum or liver and provide novel insights into variations in the fetal liver during exogenous stimulus response and biological processes of ROS metabolism in fetuses during late pregnancy caused by a single excessive tryptophan ingestion daily in the morning. © 2018 Society of Chemical Industry.
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Affiliation(s)
- Kang Xu
- Key Laboratory of Agroecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, China
- Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Changsha, China
- Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South Central, Ministry of Agriculture, Changsha, China
- Hangzhou King Techina Technology Company Academician Expert Workstation, Hangzhou King Techina Technology Co., Ltd., Hangzhou, China
| | - Miaomiao Bai
- Key Laboratory of Agroecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, China
- Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Changsha, China
- Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South Central, Ministry of Agriculture, Changsha, China
- Hangzhou King Techina Technology Company Academician Expert Workstation, Hangzhou King Techina Technology Co., Ltd., Hangzhou, China
- National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Changsha, China
- College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Peng Bin
- Key Laboratory of Agroecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, China
- Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Changsha, China
- Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South Central, Ministry of Agriculture, Changsha, China
- Hangzhou King Techina Technology Company Academician Expert Workstation, Hangzhou King Techina Technology Co., Ltd., Hangzhou, China
| | - Yehui Duan
- Key Laboratory of Agroecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, China
- Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Changsha, China
- Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South Central, Ministry of Agriculture, Changsha, China
- Hangzhou King Techina Technology Company Academician Expert Workstation, Hangzhou King Techina Technology Co., Ltd., Hangzhou, China
| | - Xin Wu
- Key Laboratory of Agroecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, China
- Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Changsha, China
- Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South Central, Ministry of Agriculture, Changsha, China
- Hangzhou King Techina Technology Company Academician Expert Workstation, Hangzhou King Techina Technology Co., Ltd., Hangzhou, China
| | - Hongnan Liu
- Key Laboratory of Agroecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, China
- Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Changsha, China
- Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South Central, Ministry of Agriculture, Changsha, China
- Hangzhou King Techina Technology Company Academician Expert Workstation, Hangzhou King Techina Technology Co., Ltd., Hangzhou, China
- National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Changsha, China
- Hunan Co-Innovation Center of Animal Production Safety, CICAPS, Changsha, China
| | - Yulong Yin
- Key Laboratory of Agroecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, China
- Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Changsha, China
- Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South Central, Ministry of Agriculture, Changsha, China
- Hangzhou King Techina Technology Company Academician Expert Workstation, Hangzhou King Techina Technology Co., Ltd., Hangzhou, China
- National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Changsha, China
- College of Animal Science, South China Agricultural University, Guangzhou, China
- Guangdong Kondarl Agro-pastoral Technology Co., Ltd., Dongguan, China
- Academician Workstation of Changsha Medical University, Changsha, China
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11
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Lu CL, Yeih DF, Hou YC, Jow GM, Li ZY, Liu WC, Zheng CM, Lin YF, Shyu JF, Chen R, Huang CY, Lu KC. The Emerging Role of Nutritional Vitamin D in Secondary Hyperparathyroidism in CKD. Nutrients 2018; 10:nu10121890. [PMID: 30513912 PMCID: PMC6316278 DOI: 10.3390/nu10121890] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Revised: 11/22/2018] [Accepted: 11/23/2018] [Indexed: 12/18/2022] Open
Abstract
In chronic kidney disease (CKD), hyperphosphatemia induces fibroblast growth factor-23 (FGF-23) expression that disturbs renal 1,25-dihydroxy vitamin D (1,25D) synthesis; thereby increasing parathyroid hormone (PTH) production. FGF-23 acts on the parathyroid gland (PTG) to increase 1α-hydroxylase activity and results in increase intra-gland 1,25D production that attenuates PTH secretion efficiently if sufficient 25D are available. Interesting, calcimimetics can further increase PTG 1α-hydroxylase activity that emphasizes the demand for nutritional vitamin D (NVD) under high PTH status. In addition, the changes in hydroxylase enzyme activity highlight the greater parathyroid 25-hydroxyvitmain D (25D) requirement in secondary hyperparathyroidism (SHPT); the higher proportion of oxyphil cells as hyperplastic parathyroid progression; lower cytosolic vitamin D binding protein (DBP) content in the oxyphil cell; and calcitriol promote vitamin D degradation are all possible reasons supports nutritional vitamin D (NVD; e.g., Cholecalciferol) supplement is crucial in SHPT. Clinically, NVD can effectively restore serum 25D concentration and prevent the further increase in PTH level. Therefore, NVD might have the benefit of alleviating the development of SHPT in early CKD and further lowering PTH in moderate to severe SHPT in dialysis patients.
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Affiliation(s)
- Chien-Lin Lu
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan.
- Division of Nephrology, Department of Medicine, Fu Jen Catholic University Hospital, School of Medicine, Fu Jen Catholic University, New Taipei City 242, Taiwan.
| | - Dong-Feng Yeih
- Division of Cardiology, Department of Medicine, Fu Jen Catholic University Hospital, School of Medicine, Fu Jen Catholic University, New Taipei City 242, Taiwan.
| | - Yi-Chou Hou
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan.
- Division of Nephrology, Department of Medicine, Cardinal-Tien Hospital, School of Medicine, Fu Jen Catholic University, New Taipei City 23155, Taiwan.
| | - Guey-Mei Jow
- Division of Nephrology, Department of Medicine, Fu Jen Catholic University Hospital, School of Medicine, Fu Jen Catholic University, New Taipei City 242, Taiwan.
| | - Zong-Yu Li
- Division of Nephrology, Department of Medicine, Fu Jen Catholic University Hospital, School of Medicine, Fu Jen Catholic University, New Taipei City 242, Taiwan.
| | - Wen-Chih Liu
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan.
- Division of Nephrology, Department of Internal Medicine, Tungs' Taichung MetroHarbor Hospital, Taichung City 433, Taiwan.
| | - Cai-Mei Zheng
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan.
- Division of Nephrology, Department of Internal Medicine, Shuang Ho Hospital, New Taipei City 235, Taiwan.
- Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11103, Taiwan.
| | - Yuh-Feng Lin
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan.
- Division of Nephrology, Department of Internal Medicine, Shuang Ho Hospital, New Taipei City 235, Taiwan.
- Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11103, Taiwan.
| | - Jia-Fwu Shyu
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan.
- Department of Biology and Anatomy, National Defense Medical Center, Taipei 114, Taiwan.
| | - Remy Chen
- Kidney Dialysis Center, Kamifukuoka General Hospital, Saitama 356, Japan.
| | - Chung-Yu Huang
- Department of Medicine, Show-Chwan Memorial Hospital, Changhua 50008, Taiwan.
| | - Kuo-Cheng Lu
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan.
- Division of Nephrology, Department of Medicine, Fu Jen Catholic University Hospital, School of Medicine, Fu Jen Catholic University, New Taipei City 242, Taiwan.
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12
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Basile C, Lomonte C. The function of the parathyroid oxyphil cells in uremia: still a mystery? Kidney Int 2017; 92:1046-1048. [DOI: 10.1016/j.kint.2017.06.024] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2017] [Revised: 06/11/2017] [Accepted: 06/13/2017] [Indexed: 11/29/2022]
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13
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De Luise M, Girolimetti G, Okere B, Porcelli AM, Kurelac I, Gasparre G. Molecular and metabolic features of oncocytomas: Seeking the blueprints of indolent cancers. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 2017; 1858:591-601. [DOI: 10.1016/j.bbabio.2017.01.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Revised: 12/28/2016] [Accepted: 01/17/2017] [Indexed: 02/07/2023]
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14
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Volmering E, Niehusmann P, Peeva V, Grote A, Zsurka G, Altmüller J, Nürnberg P, Becker AJ, Schoch S, Elger CE, Kunz WS. Neuropathological signs of inflammation correlate with mitochondrial DNA deletions in mesial temporal lobe epilepsy. Acta Neuropathol 2016; 132:277-288. [PMID: 26993140 DOI: 10.1007/s00401-016-1561-1] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Revised: 02/26/2016] [Accepted: 03/11/2016] [Indexed: 11/27/2022]
Abstract
Accumulation of mitochondrial DNA (mtDNA) deletions has been proposed to be responsible for the presence of respiratory-deficient neurons in several CNS diseases. Deletions are thought to originate from double-strand breaks due to attack of reactive oxygen species (ROS) of putative inflammatory origin. In epileptogenesis, emerging evidence points to chronic inflammation as an important feature. Here we aimed to analyze the potential association of inflammation and mtDNA deletions in the hippocampal tissue of patients with mesial temporal lobe epilepsy (mTLE) and hippocampal sclerosis (HS). Hippocampal and parahippocampal tissue samples from 74 patients with drug-refractory mTLE served for mtDNA analysis by multiplex PCR as well as long-range PCR, single-molecule PCR and ultra-deep sequencing of mtDNA in selected samples. Patients were sub-classified according to neuropathological findings. Semi-quantitative assessment of neuronal cell loss was performed in the hippocampal regions CA1-CA4. Inflammatory infiltrates were quantified by cell counts in the CA1, CA3 and CA4 regions from well preserved hippocampal samples (n = 33). Samples with HS showed a significantly increased frequency of a 7436-bp mtDNA deletion (p < 0.0001) and a higher proportion of somatic G>T transversions compared to mTLE patients with different histopathology. Interestingly, the number of T-lymphocytes in the hippocampal CA1, CA3 and CA4 regions was, similar to the 7436-bp mtDNA deletion, significantly increased in samples with HS compared to other subgroups. Our findings show a coincidence of HS, increased somatic G>T transversions, the presence of a specific mtDNA deletion, and increased inflammatory infiltrates. These results support the hypothesis that chronic inflammation leads to mitochondrial dysfunction by ROS-mediated mtDNA mutagenesis which promotes epileptogenesis and neuronal cell loss in patients with mTLE and HS.
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Affiliation(s)
- Elisa Volmering
- Department of Neuropathology, University of Bonn Medical Center, Bonn, Germany
| | - Pitt Niehusmann
- Department of Neuropathology, University of Bonn Medical Center, Bonn, Germany
- Department of Neuro-/Pathology, Oslo University Hospital, Oslo, Norway
| | - Viktoriya Peeva
- Division of Neurochemistry, Department of Epileptology, University Bonn Medical Center, Sigmund-Freud-Str. 25, 53105, Bonn, Germany
| | - Alexander Grote
- Department of Neurosurgery, University of Bonn Medical Center, Bonn, Germany
| | - Gábor Zsurka
- Division of Neurochemistry, Department of Epileptology, University Bonn Medical Center, Sigmund-Freud-Str. 25, 53105, Bonn, Germany
| | - Janine Altmüller
- Cologne Center for Genomics, University of Cologne, Cologne, Germany
- Institute of Human Genetics, University of Cologne, Cologne, Germany
| | - Peter Nürnberg
- Cologne Center for Genomics, University of Cologne, Cologne, Germany
| | - Albert J Becker
- Department of Neuropathology, University of Bonn Medical Center, Bonn, Germany
- Translational Epilepsy Research Section, University of Bonn Medical Center, Bonn, Germany
| | - Susanne Schoch
- Department of Neuropathology, University of Bonn Medical Center, Bonn, Germany
- Translational Epilepsy Research Section, University of Bonn Medical Center, Bonn, Germany
| | - Christian E Elger
- Division of Neurochemistry, Department of Epileptology, University Bonn Medical Center, Sigmund-Freud-Str. 25, 53105, Bonn, Germany
| | - Wolfram S Kunz
- Division of Neurochemistry, Department of Epileptology, University Bonn Medical Center, Sigmund-Freud-Str. 25, 53105, Bonn, Germany.
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15
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Popadin K, Gunbin KV, Khrapko K. Mitochondrial DNA mutations and cancer: lessons from the parathyroid. THE AMERICAN JOURNAL OF PATHOLOGY 2014; 184:2852-4. [PMID: 25242389 DOI: 10.1016/j.ajpath.2014.09.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2014] [Revised: 09/08/2014] [Accepted: 09/11/2014] [Indexed: 10/24/2022]
Affiliation(s)
| | | | - Konstantin Khrapko
- Department of Biology, Northeastern University, Boston, Massachusetts; Department of Pharmaceutical Sciences, Northeastern University, Boston, Massachusetts.
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