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Masui K, Onizuka H, Muragaki Y, Kawamata T, Kurata A, Komori T. Intratumoral heterogeneity of CDKN2A deletions in IDH-mutant astrocytoma. Brain Tumor Pathol 2024; 41:92-95. [PMID: 38597998 DOI: 10.1007/s10014-024-00484-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Accepted: 04/05/2024] [Indexed: 04/11/2024]
Affiliation(s)
- Kenta Masui
- Department of Pathology, Tokyo Women's Medical University, Tokyo, Japan.
| | - Hiromi Onizuka
- Department of Pathology, Kyorin University, Tokyo, Japan
| | - Yoshihiro Muragaki
- Center for Advanced Medical Engineering Research and Development, Kobe University, Hyogo, Japan
- Department of Neurosurgery, Tokyo Women's Medical University Hospital, Tokyo, Japan
| | - Takakazu Kawamata
- Department of Neurosurgery, Tokyo Women's Medical University Hospital, Tokyo, Japan
| | - Atsushi Kurata
- Department of Pathology, Tokyo Women's Medical University, Tokyo, Japan
| | - Takashi Komori
- Department of Laboratory Medicine and Pathology, Tokyo Metropolitan Neurological Hospital, Tokyo, Japan
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Shu H, Zhang Z, Liu J, Chen P, Yang C, Wu Y, Wu D, Cao Y, Chu Y, Li L. Circular RNAs: An emerging precise weapon for diabetic nephropathy diagnosis and therapy. Biomed Pharmacother 2023; 168:115818. [PMID: 37939612 DOI: 10.1016/j.biopha.2023.115818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Revised: 10/28/2023] [Accepted: 10/31/2023] [Indexed: 11/10/2023] Open
Abstract
Diabetic nephropathy (DN) is a prevalent chronic microvascular complication associated with diabetes mellitus and represents a major cause of chronic kidney disease and renal failure. Current treatment strategies for DN primarily focus on symptom alleviation, lacking effective approaches to halt or reverse DN progression. Circular RNA (circRNA), characterized by a closed-loop structure, has emerged as a novel non-coding RNA regulator of gene expression, attributed to its conservation, stability, specificity, and multifunctionality. Dysregulation of circRNA expression is closely associated with DN progression, whereby circRNA impacts kidney cell injury by modulating cell cycle, differentiation, cell death, as well as influencing the release of inflammatory factors and stromal fibronectin expression. Consequently, circRNA is considered a predictive biomarker and a potential therapeutic target for DN. This review provides an overview of the latest research progress in the classification, functions, monitoring methods, and databases related to circRNA. The paper focuses on elucidating the impact and underlying mechanisms of circRNA on kidney cells under diabetic conditions, aiming to offer novel insights into the prevention, diagnosis, and treatment of DN.
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Affiliation(s)
- Haiying Shu
- Heilongjiang Key Laboratory of Anti-Fibrosis Biotherapy, Mudanjiang Medical University, Mudanjiang, China; College of Life Sciences, Mudanjiang Medical University, Mudanjiang, China
| | - Zhen Zhang
- Heilongjiang Key Laboratory of Anti-Fibrosis Biotherapy, Mudanjiang Medical University, Mudanjiang, China; School of First Clinical Medical College, Mudanjiang Medical University, Mudanjiang, China
| | - Jieting Liu
- College of Life Sciences, Mudanjiang Medical University, Mudanjiang, China.
| | - Peijian Chen
- Heilongjiang Key Laboratory of Anti-Fibrosis Biotherapy, Mudanjiang Medical University, Mudanjiang, China; College of Life Sciences, Mudanjiang Medical University, Mudanjiang, China
| | - Can Yang
- Heilongjiang Key Laboratory of Anti-Fibrosis Biotherapy, Mudanjiang Medical University, Mudanjiang, China; College of Life Sciences, Mudanjiang Medical University, Mudanjiang, China
| | - Yan Wu
- Heilongjiang Key Laboratory of Anti-Fibrosis Biotherapy, Mudanjiang Medical University, Mudanjiang, China; College of Life Sciences, Mudanjiang Medical University, Mudanjiang, China
| | - Dan Wu
- Heilongjiang Key Laboratory of Anti-Fibrosis Biotherapy, Mudanjiang Medical University, Mudanjiang, China; College of Life Sciences, Mudanjiang Medical University, Mudanjiang, China
| | - Yanan Cao
- Heilongjiang Key Laboratory of Anti-Fibrosis Biotherapy, Mudanjiang Medical University, Mudanjiang, China; College of Life Sciences, Mudanjiang Medical University, Mudanjiang, China
| | - Yanhui Chu
- College of Life Sciences, Mudanjiang Medical University, Mudanjiang, China.
| | - Luxin Li
- Heilongjiang Key Laboratory of Anti-Fibrosis Biotherapy, Mudanjiang Medical University, Mudanjiang, China; College of Life Sciences, Mudanjiang Medical University, Mudanjiang, China.
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Utility of Fluorescence In Situ Hybridization in Clinical and Research Applications. Clin Lab Med 2022; 42:573-586. [PMID: 36368783 DOI: 10.1016/j.cll.2022.09.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Valla M, Klæstad E, Ytterhus B, Bofin AM. CCND1 Amplification in Breast Cancer -associations With Proliferation, Histopathological Grade, Molecular Subtype and Prognosis. J Mammary Gland Biol Neoplasia 2022; 27:67-77. [PMID: 35459982 PMCID: PMC9135839 DOI: 10.1007/s10911-022-09516-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 04/05/2022] [Indexed: 11/25/2022] Open
Abstract
CCND1 is located on 11q13. Increased CCND1 copy number (CN) in breast cancer (BC) is associated with high histopathological grade, high proliferation, and Luminal B subtype. In this study of CCND1 in primary BCs and corresponding axillary lymph node metastases (LNM),we examine associations between CCND1 CN in primary BCs and proliferation status, molecular subtype, and prognosis. Furthermore, we studied associations between CCND1 CN and CNs of FGFR1 and ZNF703, both of which are located on 8p12. Fluorescence in situ hybridization probes for CCND1 and chromosome 11 centromere were used on tissue microarrays comprising 526 BCs and 123 LNM. We assessed associations between CCND1 CN and tumour characteristics using Pearson's χ2 test, and estimated cumulative risks of death from BC and hazard ratios in analysis of prognosis. We found CCND1 CN ≥ 4 < 6 in 45 (8.6%) tumours, and ≥ 6 in 42 (8.0%). CCND1 CN (≥ 6) was seen in all molecular subtypes, most frequently in Luminal B (HER2-) (20/126; 16%). Increased CCND1 CN was associated with high histopathological grade, high Ki-67, and high mitotic count, but not prognosis. CCND1 CN ≥ 6 was accompanied by CN increase of FGFR1 in 6/40 cases (15.0%) and ZNF703 in 5/38 cases (13.2%). Three cases showed CN increase of all three genes. High CCND1 CN was most frequent in Luminal B (HER2-) tumours. Good correlation between CCND1 CNs in BCs and LNM was observed. Despite associations between high CCND1 CN and aggressive tumour characteristics, the prognostic impact of CCND1 CN remains unresolved.
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Affiliation(s)
- Marit Valla
- Department of Clinical and Molecular Medicine, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway
- Clinic of Laboratory Medicine, St. Olav's Hospital, Trondheim University Hospital, 7006, Trondheim, Norway
| | - Elise Klæstad
- Department of Clinical and Molecular Medicine, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway
| | - Borgny Ytterhus
- Department of Clinical and Molecular Medicine, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway
| | - Anna M Bofin
- Department of Clinical and Molecular Medicine, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway.
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Liu Y, Wu S, Zhou L, Guo Y, Zeng X. Pitfalls in RET Fusion Detection Using Break-Apart FISH Probes in Papillary Thyroid Carcinoma. J Clin Endocrinol Metab 2021; 106:1129-1138. [PMID: 33382428 DOI: 10.1210/clinem/dgaa913] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Indexed: 12/07/2022]
Abstract
OBJECTIVE A standardized procedure of fused REarranged during Transfection (RET) gene detection using fluorescence in situ hybridization (FISH) remains to be established in papillary thyroid carcinoma (PTC). Our purpose was to investigate false-negative and false-positive events and their FISH signal characteristics. METHODS A total of 111 PTC cases were analyzed using break-apart FISH probes for RET status evaluation. All FISH results were validated using fusion-induced asymmetric transcription assay (FIATA)-based reverse transcription droplet digital PCR (RT-ddPCR). Then, suspected RET-positive cases were tested using quantitative reverse transcription-PCR (RT-qPCR), followed by next-generation sequencing (NGS) for recognizing fusion variants. RESULTS Thirty RET+ cases were revealed, including 20 CCDC6 (exon 1)-RET (exon 12), 6 NCOA4 (exon 8)-RET (exon 12), 1 NCOA4 (exon 7)-RET (exon 12), 1 CCDC186 (exon 7)-RET (exon 12), 1 ERC1 (exon 12)-RET (exon 12) and 1 SPECC1L (exon 9)-RET (exon 12) tumors. All RET fusion cases occurred in the BRAF- population, with a prevalence of 41.7% (30/72). Four cases of 8% to 13% (cutoff was 7.6%) dominant isolated 3' green (IG) FISH signals were RET-. One FISH- case with isolated 5' red (IR) signals with 94% abnormal tumor cells was demonstrated to be positive, harboring the NCOA4 (exon 7)-RET (exon 12) variant. Compared with RET fusions characterized by dominant break-apart signals with 29% to 100% aberrant cells, RET + with dominant IG-signal patterns all showed more frequent FISH+ cells (84%-92%). RET+ PTC with a break-apart signal pattern was more frequently found in unifocal lesions than in multifocal/bilateral tumors (P = 0.049). CONCLUSIONS A false-positive or false-negative event may exist for RET status detection in PTCs using the traditional FISH scoring method with break-apart probes.
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Affiliation(s)
- Yuanyuan Liu
- Department of Pathology, Peking Union Medical College Hospital, Molecular Pathology Research Center, Chinese Academy of Medical Sciences, Beijing, China
| | - Shafei Wu
- Department of Pathology, Peking Union Medical College Hospital, Molecular Pathology Research Center, Chinese Academy of Medical Sciences, Beijing, China
| | - Liangrui Zhou
- Department of Pathology, Peking Union Medical College Hospital, Molecular Pathology Research Center, Chinese Academy of Medical Sciences, Beijing, China
| | - Yong Guo
- Department of Biomedical Engineering, School of Medicine, Tsinghua University, Beijing, China
| | - Xuan Zeng
- Department of Pathology, Peking Union Medical College Hospital, Molecular Pathology Research Center, Chinese Academy of Medical Sciences, Beijing, China
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Zhang W, Li J, Salena B, Li Y. A DNA Switch for Detecting Single Nucleotide Polymorphism within a Long DNA Sequence Under Denaturing Conditions. Chemistry 2019; 26:592-596. [PMID: 31475757 DOI: 10.1002/chem.201903536] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Revised: 08/28/2019] [Indexed: 01/24/2023]
Abstract
DNA detection is usually conducted under nondenaturing conditions to favor the formation of Watson-Crick base-paring interactions. However, although such a setting is excellent for distinguishing a single-nucleotide polymorphism (SNP) within short DNA sequences (15-25 nucleotides), it does not offer a good solution to SNP detection within much longer sequences. Here we report on a new detection method capable of detecting SNP in a DNA sequence containing 35-90 nucleotides. This is achieved through incorporating into the recognition DNA sequence a previously discovered DNA molecule that forms a stable G-quadruplex in the presence of 7 molar urea, a known condition for denaturing DNA structures. The systems are configured to produce both colorimetric and fluorescent signals upon target binding.
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Affiliation(s)
- Wenqing Zhang
- M.G. DeGroote Institute for Infectious Disease Research, Department of Biochemistry and Biomedical Sciences, DeGroote School of Medicine, McMaster University, 1280 Main Street West, Hamilton, ON, L8S 4K1, Canada
| | - Jiuxing Li
- M.G. DeGroote Institute for Infectious Disease Research, Department of Biochemistry and Biomedical Sciences, DeGroote School of Medicine, McMaster University, 1280 Main Street West, Hamilton, ON, L8S 4K1, Canada
| | - Bruno Salena
- Department of Medicine, DeGroote School of Medicine, McMaster University, 1280 Main Street West, Hamilton, ON, L8S 4K1, Canada
| | - Yingfu Li
- M.G. DeGroote Institute for Infectious Disease Research, Department of Biochemistry and Biomedical Sciences, DeGroote School of Medicine, McMaster University, 1280 Main Street West, Hamilton, ON, L8S 4K1, Canada
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Lyalina TA, Goncharova EA, Prokofeva NY, Voroshilina ES, Kolpashchikov DM. A DNA minimachine for selective and sensitive detection of DNA. Analyst 2019; 144:416-420. [DOI: 10.1039/c8an02274g] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Synthetic molecular machines have been explored to manipulate matter at the molecular level.
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Affiliation(s)
- Tatiana A. Lyalina
- ITMO University
- Laboratory of Solution Chemistry of Advanced Materials and Technologies
- St. Petersburg
- Russian Federation
| | - Ekaterina A. Goncharova
- ITMO University
- Laboratory of Solution Chemistry of Advanced Materials and Technologies
- St. Petersburg
- Russian Federation
| | - Nadezhda Y. Prokofeva
- ITMO University
- Laboratory of Solution Chemistry of Advanced Materials and Technologies
- St. Petersburg
- Russian Federation
| | - Ekaterina S. Voroshilina
- Ural State Medical University
- Department of Microbiology
- Virology and immunology
- Ekaterinburg
- Russian Federation
| | - Dmitry M. Kolpashchikov
- ITMO University
- Laboratory of Solution Chemistry of Advanced Materials and Technologies
- St. Petersburg
- Russian Federation
- Chemistry Department
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Zheng LJ, Liu N, Yang K, Wang AF, Tan ZR, Li X. Clinical application and importance of one-step human CYP2C19 genotype detection. J Int Med Res 2018; 46:4965-4973. [PMID: 30360673 PMCID: PMC6300956 DOI: 10.1177/0300060518787718] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND To directly achieve cytochrome P450 2C19 gene ( CYP2C19) classification using one-step real-time fluorescent PCR detection and to verify the capabilities of this method with nucleic acid extracted from whole blood samples. METHODS A human CYP2C19 genotyping kit based on one-step real-time fluorescent PCR detection was used to analyze whole blood or genomic DNA samples. This method was compared with pyrosequencing and another quantitative (q)PCR kit for its accuracy, repeatability, detection range analysis, sensitivity, specificity, and anti-interference analysis. RESULTS The one-step real-time PCR method achieved a 100% accuracy rate compared with pyrosequencing and the other qPCR kit. When detecting different concentrations of known genes, concentrations of each sample ranging from 0.2 to 125 ng/µL could be correctly detected. The genotypes of samples treated with anticoagulants, including EDTA and sodium citrate, and chyle blood samples could be correctly detected. CONCLUSION The one-step detection method demonstrated high accuracy and a wide detection range. It also had high levels of repeatability, sensitivity, and specificity for the assessment of genomic DNA test samples.
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Affiliation(s)
- Ling-Jie Zheng
- 1 Fuwai Central China Cardiovascular Hospital, Zhengzhou, China
| | - Ning Liu
- 2 Coyote Bioscience Co., Ltd., Haidian District, Beijing, China
| | - Kun Yang
- 2 Coyote Bioscience Co., Ltd., Haidian District, Beijing, China
| | - Ai-Feng Wang
- 1 Fuwai Central China Cardiovascular Hospital, Zhengzhou, China
| | - Zhi-Rong Tan
- 3 Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, China
| | - Xiang Li
- 2 Coyote Bioscience Co., Ltd., Haidian District, Beijing, China
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