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Jiang Y, Sun S, Liu X, Su K, Zhang C, Zhang P, Zhao Z, Su Y, Wang C, Du X. U3 snoRNA inter-regulates with DDX21 in the perichromosomal region to control mitosis. Cell Death Dis 2024; 15:342. [PMID: 38760378 PMCID: PMC11101645 DOI: 10.1038/s41419-024-06725-3] [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: 12/05/2023] [Revised: 04/29/2024] [Accepted: 05/07/2024] [Indexed: 05/19/2024]
Abstract
U3 snoRNA is essential for ribosome biogenesis during interphase. Upon mitotic onset, the nucleolus disassembles and U3 snoRNA relocates to the perichromosomal region (PR) to be considered as a chromosome passenger. Whether U3 controls mitosis remains unknown. Here, we demonstrate that U3 snoRNA is required for mitotic progression. We identified DDX21 as the predominant U3-binding protein during mitosis and confirmed that U3 snoRNA colocalizes with DDX21 in the PR. DDX21 knockdown induces mitotic catastrophe and similar mitotic defects caused by U3 snoRNA depletion. Interestingly, the uniform PR distribution of U3 snoRNA and DDX21 is interdependent. DDX21 functions in mitosis depending on its PR localization. Mechanistically, U3 snoRNA regulates DDX21 PR localization through maintaining its mobility. Moreover, Cy5-U3 snoRNA downsizes the fibrous condensates of His-DDX21 at proper molecular ratios in vitro. This work highlights the importance of the equilibrium between U3 snoRNA and DDX21 in PR formation and reveals the potential relationship between the PR assembly and mitotic regulation.
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Affiliation(s)
- Yang Jiang
- Department of Cell Biology, School of Basic Medical Sciences, Peking University, Beijing, 100083, China
| | - Shiqi Sun
- Department of Cell Biology, School of Basic Medical Sciences, Peking University, Beijing, 100083, China
| | - Xiaofeng Liu
- Hepatopancreatobiliary Surgery Department I, Key laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Cancer Hospital & Institute, Peking University, Beijing, 100142, China
| | - Kunqi Su
- Department of Cell Biology, School of Basic Medical Sciences, Peking University, Beijing, 100083, China
| | - Chunfeng Zhang
- Department of Medical Genetics, School of Basic Medical Sciences, Peking University, Beijing, 100083, China
| | - Peipei Zhang
- Department of Biochemistry and Biophysics, School of Basic Medical Sciences, Peking University, Beijing, 100083, China
| | - Zhuochen Zhao
- Department of Cell Biology, School of Basic Medical Sciences, Peking University, Beijing, 100083, China
| | - Ya Su
- Department of Cell Biology, School of Basic Medical Sciences, Peking University, Beijing, 100083, China
| | - Chang Wang
- Department of Cell Biology, School of Basic Medical Sciences, Peking University, Beijing, 100083, China
| | - Xiaojuan Du
- Department of Cell Biology, School of Basic Medical Sciences, Peking University, Beijing, 100083, China.
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2
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Kuang H, Li Y, Wang Y, Shi M, Duan R, Xiao Q, She H, Liu Y, Liang Q, Teng Y, Zhou M, Liang D, Li Z, Wu L. A homozygous variant in INTS11 links mitosis and neurogenesis defects to a severe neurodevelopmental disorder. Cell Rep 2023; 42:113445. [PMID: 37980560 DOI: 10.1016/j.celrep.2023.113445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 09/15/2023] [Accepted: 10/31/2023] [Indexed: 11/21/2023] Open
Abstract
The INTS11 endonuclease is crucial in modulating gene expression and has only recently been linked to human neurodevelopmental disorders (NDDs). However, how INTS11 participates in human development and disease remains unclear. Here, we identify a homozygous INTS11 variant in two siblings with a severe NDD. The variant impairs INTS11 catalytic activity, supported by its substrate's accumulation, and causes G2/M arrest in patient cells with length-dependent dysregulation of genes involved in mitosis and neural development, including the NDD gene CDKL5. The mutant knockin (KI) in induced pluripotent stem cells (iPSCs) disturbs their mitotic spindle organization and thus leads to slow proliferation and increased apoptosis, possibly through the decreased neurally functional CDKL5-induced extracellular signal-regulated kinase (ERK) pathway inhibition. The generation of neural progenitor cells (NPCs) from the mutant iPSCs is also delayed, with long transcript loss concerning neurogenesis. Our work reveals a mechanism underlying INTS11 dysfunction-caused human NDD and provides an iPSC model for this disease.
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Affiliation(s)
- Hanzhe Kuang
- Center for Medical Genetics, Hunan Key Laboratory of Medical Genetics, MOE Key Lab of Rare Pediatric Diseases, School of Life Sciences, Central South University, Changsha 410000, China
| | - Yunlong Li
- Center for Medical Genetics, Hunan Key Laboratory of Medical Genetics, MOE Key Lab of Rare Pediatric Diseases, School of Life Sciences, Central South University, Changsha 410000, China
| | - Yixuan Wang
- Center for Medical Genetics, Hunan Key Laboratory of Medical Genetics, MOE Key Lab of Rare Pediatric Diseases, School of Life Sciences, Central South University, Changsha 410000, China
| | - Meizhen Shi
- Center for Medical Genetics, Hunan Key Laboratory of Medical Genetics, MOE Key Lab of Rare Pediatric Diseases, School of Life Sciences, Central South University, Changsha 410000, China; Center for Medical Genetics and Genomics, The Second Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Ranhui Duan
- Center for Medical Genetics, Hunan Key Laboratory of Medical Genetics, MOE Key Lab of Rare Pediatric Diseases, School of Life Sciences, Central South University, Changsha 410000, China
| | - Qiao Xiao
- Center for Medical Genetics, Hunan Key Laboratory of Medical Genetics, MOE Key Lab of Rare Pediatric Diseases, School of Life Sciences, Central South University, Changsha 410000, China
| | - Haoyuan She
- Center for Medical Genetics, Hunan Key Laboratory of Medical Genetics, MOE Key Lab of Rare Pediatric Diseases, School of Life Sciences, Central South University, Changsha 410000, China
| | - Yingdi Liu
- Center for Medical Genetics, Hunan Key Laboratory of Medical Genetics, MOE Key Lab of Rare Pediatric Diseases, School of Life Sciences, Central South University, Changsha 410000, China
| | - Qiaowei Liang
- Center for Medical Genetics, Hunan Key Laboratory of Medical Genetics, MOE Key Lab of Rare Pediatric Diseases, School of Life Sciences, Central South University, Changsha 410000, China; Department of Medical Genetics, Hunan Jiahui Genetics Hospital, Changsha 410000, China
| | - Yanling Teng
- Center for Medical Genetics, Hunan Key Laboratory of Medical Genetics, MOE Key Lab of Rare Pediatric Diseases, School of Life Sciences, Central South University, Changsha 410000, China
| | - Miaojin Zhou
- Center for Medical Genetics, Hunan Key Laboratory of Medical Genetics, MOE Key Lab of Rare Pediatric Diseases, School of Life Sciences, Central South University, Changsha 410000, China
| | - Desheng Liang
- Center for Medical Genetics, Hunan Key Laboratory of Medical Genetics, MOE Key Lab of Rare Pediatric Diseases, School of Life Sciences, Central South University, Changsha 410000, China; Department of Medical Genetics, Hunan Jiahui Genetics Hospital, Changsha 410000, China.
| | - Zhuo Li
- Center for Medical Genetics, Hunan Key Laboratory of Medical Genetics, MOE Key Lab of Rare Pediatric Diseases, School of Life Sciences, Central South University, Changsha 410000, China.
| | - Lingqian Wu
- Center for Medical Genetics, Hunan Key Laboratory of Medical Genetics, MOE Key Lab of Rare Pediatric Diseases, School of Life Sciences, Central South University, Changsha 410000, China; Department of Medical Genetics, Hunan Jiahui Genetics Hospital, Changsha 410000, China.
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3
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Yang X, Yang L. Current understanding of the genomic abnormities in premature ovarian failure: chance for early diagnosis and management. Front Med (Lausanne) 2023; 10:1194865. [PMID: 37332766 PMCID: PMC10274511 DOI: 10.3389/fmed.2023.1194865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Accepted: 05/17/2023] [Indexed: 06/20/2023] Open
Abstract
Premature ovarian failure (POF) is an insidious cause of female infertility and a devastating condition for women. POF also has a strong familial and heterogeneous genetic background. Management of POF is complicated by the variable etiology and presentation, which are generally characterized by abnormal hormone levels, gene instability and ovarian dysgenesis. To date, abnormal regulation associated with POF has been found in a small number of genes, including autosomal and sex chromosomal genes in folliculogenesis, granulosa cells, and oocytes. Due to the complex genomic contributions, ascertaining the exact causative mechanisms has been challenging in POF, and many pathogenic genomic characteristics have yet to be elucidated. However, emerging research has provided new insights into genomic variation in POF as well as novel etiological factors, pathogenic mechanisms and therapeutic intervention approaches. Meanwhile, scattered studies of transcriptional regulation revealed that ovarian cell function also depends on specific biomarker gene expression, which can influence protein activities, thus causing POF. In this review, we summarized the latest research and issues related to the genomic basis for POF and focused on insights gained from their biological effects and pathogenic mechanisms in POF. The present integrated studies of genomic variants, gene expression and related protein abnormalities were structured to establish the role of etiological genes associated with POF. In addition, we describe the design of some ongoing clinical trials that may suggest safe, feasible and effective approaches to improve the diagnosis and therapy of POF, such as Filgrastim, goserelin, resveratrol, natural plant antitoxin, Kuntai capsule et al. Understanding the candidate genomic characteristics in POF is beneficial for the early diagnosis of POF and provides appropriate methods for prevention and drug treatment. Additional efforts to clarify the POF genetic background are necessary and are beneficial for researchers and clinicians regarding genetic counseling and clinical practice. Taken together, recent genomic explorations have shown great potential to elucidate POF management in women and are stepping from the bench to the bedside.
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Affiliation(s)
- Xu Yang
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Lin Yang
- Department of Pharmacy, West China Hospital, Sichuan University, Chengdu, China
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4
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Wu J, Fang Q, Yao J, Ge L, Hu L, Wang Z, Jin G. Integration of ultrasound radiomics features and clinical factors: A nomogram model for identifying the Ki-67 status in patients with breast carcinoma. Front Oncol 2022; 12:979358. [PMID: 36276108 PMCID: PMC9581085 DOI: 10.3389/fonc.2022.979358] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Accepted: 09/20/2022] [Indexed: 11/13/2022] Open
Abstract
Objective The aim of this study was to develop and validate an ultrasound-based radiomics nomogram model by integrating the clinical risk factors and radiomics score (Rad-Score) to predict the Ki-67 status in patients with breast carcinoma. Methods Ultrasound images of 284 patients (196 high Ki-67 expression and 88 low Ki-67 expression) were retrospectively analyzed, of which 198 patients belonged to the training set and 86 patients to the test set. The region of interest of tumor was delineated, and the radiomics features were extracted. Radiomics features underwent dimensionality reduction analysis by using the independent sample t test and least absolute shrinkage and selection operator (LASSO) algorithm. The support vector machine (SVM), logistic regression (LR), decision tree (DT), random forest (RF), naive Bayes (NB) and XGBoost (XGB) machine learning classifiers were trained to establish prediction model based on the selected features. The classifier with the highest AUC value was selected to convert the output of the results into the Rad-Score and was regarded as Rad-Score model. In addition, the logistic regression method was used to integrate Rad-Score and clinical risk factors to generate the nomogram model. The leave group out cross-validation (LGOCV) method was performed 200 times to verify the reliability and stability of the nomogram model. Results Six classifier models were established based on the 15 non-zero coefficient features. Among them, the LR classifier achieved the best performance in the test set, with the area under the receiver operating characteristic curve (AUC) value of 0.786, and was obtained as the Rad-Score model, while the XGB performed the worst (AUC, 0.615). In multivariate analysis, independent risk factor for high Ki-67 status was age (odds ratio [OR] = 0.97, p = 0.04). The nomogram model based on the age and Rad-Score had a slightly higher AUC than that of Rad-Score model (AUC, 0.808 vs. 0.798) in the test set, but no statistical difference (p = 0.144, DeLong test). The LGOCV yielded a median AUC of 0.793 in the test set. Conclusions This study proposed a convenient, clinically useful ultrasound radiomics nomogram model that can be used for the preoperative individualized prediction of the Ki-67 status in patients with BC.
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Affiliation(s)
- Jiangfeng Wu
- Department of Ultrasound, Dongyang People’s Hospital, Dongyang, China
- *Correspondence: Guilong Jin, ; Zhengping Wang, ; Liyan Hu, ; Lifang Ge,
| | - Qingqing Fang
- Department of Ultrasound, Tianxiang East Hospital, Yiwu, China
| | - Jincao Yao
- Department of Ultrasound, Zhejiang Cancer Hospital, Hangzhou, China
| | - Lifang Ge
- Department of Ultrasound, Dongyang People’s Hospital, Dongyang, China
- *Correspondence: Guilong Jin, ; Zhengping Wang, ; Liyan Hu, ; Lifang Ge,
| | - Liyan Hu
- Department of Ultrasound, Dongyang People’s Hospital, Dongyang, China
- *Correspondence: Guilong Jin, ; Zhengping Wang, ; Liyan Hu, ; Lifang Ge,
| | - Zhengping Wang
- Department of Ultrasound, Dongyang People’s Hospital, Dongyang, China
- *Correspondence: Guilong Jin, ; Zhengping Wang, ; Liyan Hu, ; Lifang Ge,
| | - Guilong Jin
- Department of Ultrasound, Dongyang People’s Hospital, Dongyang, China
- *Correspondence: Guilong Jin, ; Zhengping Wang, ; Liyan Hu, ; Lifang Ge,
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5
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Kang EY, Millstein J, Popovic G, Meagher NS, Bolithon A, Talhouk A, Chiu DS, Anglesio MS, Leung B, Tang K, Lambie N, Pavanello M, Da-Anoy A, Lambrechts D, Loverix L, Olbrecht S, Bisinotto C, Garcia-Donas J, Ruiz-Llorente S, Yagüe-Fernandez M, Edwards RP, Elishaev E, Olawaiye A, Taylor S, Ataseven B, du Bois A, Harter P, Lester J, Høgdall CK, Armasu SM, Huang Y, Vierkant RA, Wang C, Winham SJ, Heublein S, Kommoss FKF, Cramer DW, Sasamoto N, van-Wagensveld L, Lycke M, Mateoiu C, Joseph J, Pike MC, Odunsi K, Tseng CC, Pearce CL, Bilic S, Conrads TP, Hartmann A, Hein A, Jones ME, Leung Y, Beckmann MW, Ruebner M, Schoemaker MJ, Terry KL, El-Bahrawy MA, Coulson P, Etter JL, LaVigne-Mager K, Andress J, Grube M, Fischer A, Neudeck N, Robertson G, Farrell R, Barlow E, Quinn C, Hettiaratchi A, Casablanca Y, Erber R, Stewart CJR, Tan A, Yu Y, Boros J, Brand AH, Harnett PR, Kennedy CJ, Nevins N, Morgan T, Fasching PA, Vergote I, Swerdlow AJ, Candido Dos Reis FJ, Maxwell GL, Neuhausen SL, Barquin-Garcia A, Modugno F, Moysich KB, Crowe PJ, Hirasawa A, Heitz F, Karlan BY, Goode EL, Sinn P, Horlings HM, Høgdall E, Sundfeldt K, Kommoss S, Staebler A, Wu AH, Cohen PA, DeFazio A, Lee CH, Steed H, Le ND, Gayther SA, Lawrenson K, Pharoah PDP, Konecny G, Cook LS, Ramus SJ, Kelemen LE, Köbel M. MCM3 is a novel proliferation marker associated with longer survival for patients with tubo-ovarian high-grade serous carcinoma. Virchows Arch 2022; 480:855-871. [PMID: 34782936 PMCID: PMC9035053 DOI: 10.1007/s00428-021-03232-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 10/19/2021] [Accepted: 11/01/2021] [Indexed: 12/14/2022]
Abstract
Tubo-ovarian high-grade serous carcinomas (HGSC) are highly proliferative neoplasms that generally respond well to platinum/taxane chemotherapy. We recently identified minichromosome maintenance complex component 3 (MCM3), which is involved in the initiation of DNA replication and proliferation, as a favorable prognostic marker in HGSC. Our objective was to further validate whether MCM3 mRNA expression and possibly MCM3 protein levels are associated with survival in patients with HGSC. MCM3 mRNA expression was measured using NanoString expression profiling on formalin-fixed and paraffin-embedded tissue (N = 2355 HGSC) and MCM3 protein expression was assessed by immunohistochemistry (N = 522 HGSC) and compared with Ki-67. Kaplan-Meier curves and the Cox proportional hazards model were used to estimate associations with survival. Among chemotherapy-naïve HGSC, higher MCM3 mRNA expression (one standard deviation increase in the score) was associated with longer overall survival (HR = 0.87, 95% CI 0.81-0.92, p < 0.0001, N = 1840) in multivariable analysis. MCM3 mRNA expression was highest in the HGSC C5.PRO molecular subtype, although no interaction was observed between MCM3, survival and molecular subtypes. MCM3 and Ki-67 protein levels were significantly lower after exposure to neoadjuvant chemotherapy compared to chemotherapy-naïve tumors: 37.0% versus 46.4% and 22.9% versus 34.2%, respectively. Among chemotherapy-naïve HGSC, high MCM3 protein levels were also associated with significantly longer disease-specific survival (HR = 0.52, 95% CI 0.36-0.74, p = 0.0003, N = 392) compared to cases with low MCM3 protein levels in multivariable analysis. MCM3 immunohistochemistry is a promising surrogate marker of proliferation in HGSC.
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Affiliation(s)
- Eun Young Kang
- Department of Pathology and Laboratory Medicine, Foothills Medical Center, University of Calgary, Calgary, AB, Canada
| | - Joshua Millstein
- Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California Norris Comprehensive Cancer Center, Los Angeles, CA, USA
| | - Gordana Popovic
- Mark Wainwright Analytical Centre, Stats Central, University of New South Wales Sydney, Sydney, Australia
| | - Nicola S Meagher
- School of Women's and Children's Health, Faculty of Medicine, University of NSW Sydney, Sydney, NSW, Australia
- Adult Cancer Program, Lowy Cancer Research Centre, University of NSW Sydney, Sydney, NSW, Australia
| | - Adelyn Bolithon
- School of Women's and Children's Health, Faculty of Medicine, University of NSW Sydney, Sydney, NSW, Australia
- Adult Cancer Program, Lowy Cancer Research Centre, University of NSW Sydney, Sydney, NSW, Australia
| | - Aline Talhouk
- British Columbia's Ovarian Cancer Research (OVCARE) Program, BC Cancer, Vancouver General Hospital, and University of British Columbia, Vancouver, BC, Canada
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, BC, Canada
- Department of Obstetrics and Gynecology, University of British Columbia, Vancouver, BC, Canada
| | - Derek S Chiu
- British Columbia's Ovarian Cancer Research (OVCARE) Program, BC Cancer, Vancouver General Hospital, and University of British Columbia, Vancouver, BC, Canada
| | - Michael S Anglesio
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, BC, Canada
- Department of Obstetrics and Gynecology, University of British Columbia, Vancouver, BC, Canada
- Histopathology/ISH Core Facility, Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, UK
| | - Betty Leung
- Prince of Wales Clinical School, University of NSW Sydney, Sydney, NSW, Australia
| | - Katrina Tang
- Department of Anatomical Pathology, Prince of Wales Hospital, Sydney, Australia
| | - Neil Lambie
- NSW Health Pathology, Prince of Wales Hospital, Sydney, Australia
| | - Marina Pavanello
- Centre for Cancer Research, The Westmead Institute for Medical Research, Westmead, Australia
| | - Annalyn Da-Anoy
- Department of Pathology and Laboratory Medicine, Foothills Medical Center, University of Calgary, Calgary, AB, Canada
| | - Diether Lambrechts
- VIB Center for Cancer Biology, Leuven, Belgium
- Laboratory for Translational Genetics, Department of Human Genetics, University of Leuven, Leuven, Belgium
| | - Liselore Loverix
- Division of Gynecologic Oncology, Department of Obstetrics and Gynaecology, University Hospitals Leuven, Leuven, Belgium
| | - Siel Olbrecht
- Division of Gynecologic Oncology, Department of Obstetrics and Gynaecology, University Hospitals Leuven, Leuven, Belgium
| | - Christiani Bisinotto
- Department of Gynecology and Obstetrics, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Jesus Garcia-Donas
- HM Sanchinarro Centro Integral Oncológico Clara Campal, University Hospital, Madrid, Spain
| | - Sergio Ruiz-Llorente
- HM Sanchinarro Centro Integral Oncológico Clara Campal, University Hospital, Madrid, Spain
| | - Monica Yagüe-Fernandez
- HM Sanchinarro Centro Integral Oncológico Clara Campal, University Hospital, Madrid, Spain
| | - Robert P Edwards
- Department of Obstetrics, Gynecology, and Reproductive Sciences, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Esther Elishaev
- Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Alexander Olawaiye
- Department of Obstetrics, Gynecology, and Reproductive Sciences, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Sarah Taylor
- Department of Obstetrics, Gynecology, and Reproductive Sciences, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Beyhan Ataseven
- Department of Gynecology and Gynecologic Oncology, Kliniken Essen-Mitte (KEM), Essen, Germany
- Department of Gynecology and Obstetrics, Ludwig Maximilian University of Munich, Munich, Germany
| | - Andreas du Bois
- Department of Gynecology and Gynecologic Oncology, Kliniken Essen-Mitte (KEM), Essen, Germany
- Department of Gynecology and Gynecological Oncology, Dr. Horst-Schmidt Klinik Wiesbaden, Wiesbaden, Germany
| | - Philipp Harter
- Department of Gynecology and Gynecologic Oncology, Kliniken Essen-Mitte (KEM), Essen, Germany
- Department of Gynecology and Gynecological Oncology, Dr. Horst-Schmidt Klinik Wiesbaden, Wiesbaden, Germany
| | - Jenny Lester
- Department of Obstetrics and Gynecology, David Geffen School of Medicine, University of California at Los Angeles, Los Angeles, CA, USA
| | - Claus K Høgdall
- Department of Gynaecology, University of Copenhagen, Rigshospitalet, Copenhagen, Denmark
| | - Sebastian M Armasu
- Department of Quantitative Health Sciences, Division of Clinical Trials and Biostatistics, Mayo Clinic, Rochester, MN, USA
| | - Yajue Huang
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
| | - Robert A Vierkant
- Department of Quantitative Health Sciences, Division of Clinical Trials and Biostatistics, Mayo Clinic, Rochester, MN, USA
| | - Chen Wang
- Department of Quantitative Health Sciences, Division of Computational Biology, Mayo Clinic, Rochester, MN, USA
| | - Stacey J Winham
- Department of Quantitative Health Sciences, Division of Computational Biology, Mayo Clinic, Rochester, MN, USA
| | - Sabine Heublein
- Department of Obstetrics and Gynecology, University Hospital Heidelberg, Heidelberg, Germany
| | - Felix K F Kommoss
- Institute of Pathology, University Hospital Heidelberg, Heidelberg, Germany
| | - Daniel W Cramer
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, USA
- Obstetrics and Gynecology Epidemiology Center, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
| | - Naoko Sasamoto
- Obstetrics and Gynecology Epidemiology Center, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
| | - Lilian van-Wagensveld
- Division of Molecular Pathology, The Netherlands Cancer Institute, Amsterdam, Netherlands
| | - Maria Lycke
- Department of Obstetrics and Gynecology, Sahlgrenska Academy at Gothenburg University, Gothenburg, Sweden
| | - Constantina Mateoiu
- Department of Pathology and Cytology, Sahlgrenska Academy at Gothenburg University, Gothenburg, Sweden
| | - Janine Joseph
- Division of Cancer Prevention and Control, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Malcolm C Pike
- Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California Norris Comprehensive Cancer Center, Los Angeles, CA, USA
- Department of Epidemiology and Biostatistics, Memorial Sloan-Kettering Cancer Center, New York, NY, USA
| | - Kunle Odunsi
- Department of Oncology, University of Chicago, Chicago, IL, USA
- Department of Obstetrics and Gynecology, University of Chicago, Chicago, IL, USA
| | - Chiu-Chen Tseng
- Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Celeste L Pearce
- Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California Norris Comprehensive Cancer Center, Los Angeles, CA, USA
- Department of Epidemiology, University of Michigan School of Public Health, Ann Arbor, MI, USA
| | - Sanela Bilic
- Department of Gynaecological Oncology, St John of God Subiaco Hospital, Subiaco, Australia
| | - Thomas P Conrads
- Women's Health Integrated Research Center, Women's Service Line, Inova Health System, Falls Church, VA, USA
| | - Arndt Hartmann
- Institute of Pathology, Comprehensive Cancer Center Erlangen-EMN, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nuremberg (FAU), Erlangen-Nürnberg, Germany
| | - Alexander Hein
- Department of Gynecology and Obstetrics, Comprehensive Cancer Center Erlangen-EMN, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nuremberg (FAU), Erlangen, Germany
| | - Michael E Jones
- Division of Genetics and Epidemiology, The Institute of Cancer Research, London, UK
| | - Yee Leung
- Division of Obstetrics and Gynaecology, Faculty of Health and Medical Sciences, University of Western Australia, Crawley, WA, Australia
- Department of Gynaecological Oncology, King Edward Memorial Hospital, Subiaco, Australia
- Australia New Zealand Gynaecological Oncology Group, Camperdown, Australia
| | - Matthias W Beckmann
- Department of Gynecology and Obstetrics, Comprehensive Cancer Center Erlangen-EMN, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nuremberg (FAU), Erlangen, Germany
| | - Matthias Ruebner
- Department of Gynecology and Obstetrics, Comprehensive Cancer Center Erlangen-EMN, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nuremberg (FAU), Erlangen, Germany
| | - Minouk J Schoemaker
- Division of Genetics and Epidemiology, The Institute of Cancer Research, London, UK
| | - Kathryn L Terry
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, USA
- Obstetrics and Gynecology Epidemiology Center, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
| | - Mona A El-Bahrawy
- Department of Metabolism, Digestion and Reproduction, Imperial College London, London, UK
| | - Penny Coulson
- Division of Genetics and Epidemiology, The Institute of Cancer Research, London, UK
| | - John L Etter
- Division of Cancer Prevention and Control, Roswell Park Cancer Institute, Buffalo, NY, USA
| | | | - Juergen Andress
- Department of Women's Health, Tübingen University Hospital, Tübingen, Germany
| | - Marcel Grube
- Department of Women's Health, Tübingen University Hospital, Tübingen, Germany
| | - Anna Fischer
- Institute of Pathology, Tübingen University Hospital, Tübingen, Germany
| | - Nina Neudeck
- Institute of Pathology, Tübingen University Hospital, Tübingen, Germany
| | - Greg Robertson
- School of Women's and Children's Health, Faculty of Medicine, University of NSW Sydney, Sydney, NSW, Australia
- St George Private Hospital, Kogarah, Australia
| | | | - Ellen Barlow
- Gynaecological Cancer Centre, Royal Hospital for Women, Sydney, Australia
| | - Carmel Quinn
- Mark Wainwright Analytical Centre, Stats Central, University of New South Wales Sydney, Sydney, Australia
- Adult Cancer Program, Lowy Cancer Research Centre, University of NSW Sydney, Sydney, NSW, Australia
- Prince of Wales Clinical School, University of NSW Sydney, Sydney, NSW, Australia
- Translational Cancer Research Network, University of New South Wales Sydney, Sydney, Australia
- UNSW Biorepository, Mark Wainwright Analytical Centre, University of New South Wales Sydney, Sydney, Australia
| | - Anusha Hettiaratchi
- UNSW Biorepository, Mark Wainwright Analytical Centre, University of New South Wales Sydney, Sydney, Australia
| | - Yovanni Casablanca
- Uniformed Services University of the Health Sciences, USAF, Bethesda, MD, USA
| | - Ramona Erber
- Institute of Pathology, Comprehensive Cancer Center Erlangen-EMN, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nuremberg (FAU), Erlangen-Nürnberg, Germany
| | - Colin J R Stewart
- School for Women's and Infants' Health, University of Western Australia, Perth, Australia
| | - Adeline Tan
- Division of Obstetrics and Gynaecology, Faculty of Health and Medical Sciences, University of Western Australia, Crawley, WA, Australia
- Western Women's Pathology, Western Diagnostic Pathology, Wembley, Australia
| | - Yu Yu
- School of Pharmacy and Biomedical Sciences, Curtin Health Innovation Research Institute, Curtin University, Perth, WA, Australia
| | - Jessica Boros
- Centre for Cancer Research, The Westmead Institute for Medical Research, Westmead, Australia
- Department of Gynaecological Oncology, Westmead Hospital, Sydney, NSW, Australia
| | - Alison H Brand
- Department of Gynaecological Oncology, Westmead Hospital, Sydney, NSW, Australia
| | - Paul R Harnett
- The Crown Princess Mary Cancer Centre Westmead, Sydney-West Cancer Network, Westmead Hospital, Sydney, NSW, Australia
- The University of Sydney, Sydney, Australia
| | - Catherine J Kennedy
- Centre for Cancer Research, The Westmead Institute for Medical Research, Westmead, Australia
- Department of Gynaecological Oncology, Westmead Hospital, Sydney, NSW, Australia
| | - Nikilyn Nevins
- Centre for Cancer Research, The Westmead Institute for Medical Research, Westmead, Australia
- Department of Gynaecological Oncology, Westmead Hospital, Sydney, NSW, Australia
- The University of Sydney, Sydney, Australia
| | - Terry Morgan
- Department of Pathology, Oregon Health & Science University, Portland, OR, USA
| | - Peter A Fasching
- Department of Gynecology and Obstetrics, Comprehensive Cancer Center Erlangen-EMN, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nuremberg (FAU), Erlangen, Germany
- Department of Medicine, Division of Hematology and Oncology, David Geffen School of Medicine, University of California at Los Angeles, Los Angeles, CA, USA
| | - Ignace Vergote
- Division of Gynecologic Oncology, Department of Obstetrics and Gynaecology, University Hospitals Leuven, Leuven, Belgium
| | - Anthony J Swerdlow
- Division of Genetics and Epidemiology, The Institute of Cancer Research, London, UK
- Division of Breast Cancer Research, The Institute of Cancer Research, London, UK
| | - Francisco J Candido Dos Reis
- Department of Gynecology and Obstetrics, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - G Larry Maxwell
- Women's Service Line, Inova Health System, Falls Church, VA, USA
| | - Susan L Neuhausen
- Department of Population Sciences, Beckman Research Institute of City of Hope, Duarte, CA, USA
| | | | - Francesmary Modugno
- Department of Obstetrics, Gynecology, and Reproductive Sciences, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
- Department of Epidemiology, University of Pittsburgh Graduate School of Public Health, Pittsburgh, PA, USA
| | - Kirsten B Moysich
- Division of Cancer Prevention and Control, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Philip J Crowe
- Prince of Wales Clinical School, University of NSW Sydney, Sydney, NSW, Australia
| | - Akira Hirasawa
- Department of Clinical Genomic Medicine, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Florian Heitz
- Department of Gynecology and Gynecologic Oncology, Kliniken Essen-Mitte (KEM), Essen, Germany
- Department of Gynecology and Gynecological Oncology, Dr. Horst-Schmidt Klinik Wiesbaden, Wiesbaden, Germany
- Department for Gynecology with the Center for Oncologic Surgery, Charité Campus Virchow-Klinikum, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität Zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Beth Y Karlan
- Department of Obstetrics and Gynecology, David Geffen School of Medicine, University of California at Los Angeles, Los Angeles, CA, USA
| | - Ellen L Goode
- Department of Quantitative Health Sciences, Division of Epidemiology, Mayo Clinic, Rochester, MN, USA
| | - Peter Sinn
- Institute of Pathology, University Hospital Heidelberg, Heidelberg, Germany
| | - Hugo M Horlings
- Division of Molecular Pathology, The Netherlands Cancer Institute, Amsterdam, Netherlands
| | - Estrid Høgdall
- Department of Virus, Lifestyle and Genes, Danish Cancer Society Research Center, Copenhagen, Denmark
- Department of Pathology, Molecular Unit, Herlev Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Karin Sundfeldt
- Department of Obstetrics and Gynecology, Sahlgrenska Center for Cancer Research, Gothenburg University, Gothenburg, Sweden
| | - Stefan Kommoss
- Department of Women's Health, Tübingen University Hospital, Tübingen, Germany
| | - Annette Staebler
- Institute of Pathology, Tübingen University Hospital, Tübingen, Germany
| | - Anna H Wu
- Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California Norris Comprehensive Cancer Center, Los Angeles, CA, USA
| | - Paul A Cohen
- Division of Obstetrics and Gynaecology, Faculty of Health and Medical Sciences, University of Western Australia, Crawley, WA, Australia
- Bendat Family Comprehensive Cancer Centre, St John of God Subiaco Hospital, Subiaco, WA, Australia
| | - Anna DeFazio
- Centre for Cancer Research, The Westmead Institute for Medical Research, Westmead, Australia
- Department of Gynaecological Oncology, Westmead Hospital, Sydney, NSW, Australia
- The Crown Princess Mary Cancer Centre Westmead, Sydney-West Cancer Network, Westmead Hospital, Sydney, NSW, Australia
- The University of Sydney, Sydney, Australia
| | - Cheng-Han Lee
- Department of Pathology and Laboratory Medicine, University of Alberta, Edmonton, AB, Canada
| | - Helen Steed
- Department of Obstetrics and Gynecology, Division of Gynecologic Oncology, Royal Alexandra Hospital, Edmonton, AB, Canada
| | - Nhu D Le
- Cancer Control Research, BC Cancer, Vancouver, BC, Canada
| | - Simon A Gayther
- Center for Bioinformatics and Functional Genomics and the Cedars Sinai Genomics Core, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Kate Lawrenson
- Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, Women's Cancer Program at the Samuel Oschin Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Paul D P Pharoah
- Department of Oncology, Centre for Cancer Genetic Epidemiology, University of Cambridge, Cambridge, UK
- Department of Public Health and Primary Care, Centre for Cancer Genetic Epidemiology, University of Cambridge, Cambridge, UK
| | - Gottfried Konecny
- Department of Medicine, Division of Hematology and Oncology, David Geffen School of Medicine, University of California at Los Angeles, Los Angeles, CA, USA
| | - Linda S Cook
- School of Public Health, University of Colorado, Aurora, CO, USA
- Department of Cancer Epidemiology and Prevention Research, Alberta Health Services, Calgary, AB, Canada
| | - Susan J Ramus
- School of Women's and Children's Health, Faculty of Medicine, University of NSW Sydney, Sydney, NSW, Australia
- Adult Cancer Program, Lowy Cancer Research Centre, University of NSW Sydney, Sydney, NSW, Australia
| | - Linda E Kelemen
- Bureau of Population Health Data Analytics & Informatics, South Carolina Department of Health and Environmental Control, Columbia, SC, USA
| | - Martin Köbel
- Department of Pathology and Laboratory Medicine, Foothills Medical Center, University of Calgary, Calgary, AB, Canada.
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Lv X, Guan C, Li Y, Su X, Zhang L, Wang X, Xia HF, Ma X. Effects of single and multiple transplantations of human umbilical cord mesenchymal stem cells on the recovery of ovarian function in the treatment of premature ovarian failure in mice. J Ovarian Res 2021; 14:119. [PMID: 34526090 PMCID: PMC8442267 DOI: 10.1186/s13048-021-00871-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Accepted: 08/23/2021] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Currently, there is no effective treatment for premature ovarian failure (POF), and stem cell therapy is considered the most promising treatment. Human umbilical cord blood mesenchymal stem cells (hUC-MSCs) have shown good regenerative ability in various diseases, including POF; however, their underlying mechanism and dosage for POF treatment remain unclear. This study aimed to compare the effect of single and multiple injections of hUC-MSCs on ovarian function repair in chemotherapy-induced POF. METHODS Female mice were intraperitoneally injected with 30 mg/kg busulfan and 120 mg/kg cyclophosphamide (CTX) to induce POF. In the single hUC-MSC injection group, hUC-MSCs were transplanted into mice D7 after CTX and busulfan administration, while in the multiple injection group, hUC-MSCs were transplanted on D7, D14, and D21 after CTX and busulfan administration. We evaluated the ovarian morphology, fertility, follicle-stimulating hormone and estradiol concentrations, follicle count, POF model, and cell transplantation results. In addition, real-time polymerase chain reaction, immunohistochemistry, and miRNA and mRNA chips were used to evaluate the effect of the cell therapy. RESULTS Ovary size, number of follicle at all developmental stages, and fertility were significantly reduced in the POF group compared with the control. Under hUC-MSC treatment, the ovarian morphology and follicle count were significantly restored, and fertility was significantly increased. By comparing the single and multiple hUC-MSC injection groups, we found that the anti-Müllerian hormone and Ki-67 levels were significantly increased in the multiple hUC-MSC group on D60 after chemotherapy. The expression of stimulating hormone receptors, inhibin α, and inhibin β was significantly restored, and the therapeutic effect was superior to that of the single hUC-MSC injection group. CONCLUSION These results indicate that hUC-MSCs can restore the structure of injured ovarian tissue and its function in chemotherapy-induced POF mice and ameliorate fertility. Multiple hUC-MSC transplantations have a better effect on the recovery of ovarian function than single hUC-MSC transplantation in POF.
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Affiliation(s)
- Xiaodan Lv
- Reproductive and Genetic Center of the National Research Institute for Family Planning, Beijing, 100081, China.,Graduate School, Peking Union Medical College, Beijing, 100730, China
| | - Chunyi Guan
- Reproductive and Genetic Center of the National Research Institute for Family Planning, Beijing, 100081, China.,Graduate School, Peking Union Medical College, Beijing, 100730, China
| | - Ying Li
- Reproductive and Genetic Center of the National Research Institute for Family Planning, Beijing, 100081, China.,Graduate School, Peking Union Medical College, Beijing, 100730, China
| | - Xing Su
- Reproductive and Genetic Center of the National Research Institute for Family Planning, Beijing, 100081, China.,Graduate School, Peking Union Medical College, Beijing, 100730, China
| | - Lu Zhang
- Reproductive and Genetic Center of the National Research Institute for Family Planning, Beijing, 100081, China.,Graduate School, Peking Union Medical College, Beijing, 100730, China
| | - Xueqin Wang
- Reproductive and Genetic Center of the National Research Institute for Family Planning, Beijing, 100081, China.,Graduate School, Peking Union Medical College, Beijing, 100730, China
| | - Hong-Fei Xia
- Reproductive and Genetic Center of the National Research Institute for Family Planning, Beijing, 100081, China. .,Graduate School, Peking Union Medical College, Beijing, 100730, China.
| | - Xu Ma
- Reproductive and Genetic Center of the National Research Institute for Family Planning, Beijing, 100081, China. .,Graduate School, Peking Union Medical College, Beijing, 100730, China.
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7
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Remnant L, Kochanova NY, Reid C, Cisneros-Soberanis F, Earnshaw WC. The intrinsically disorderly story of Ki-67. Open Biol 2021; 11:210120. [PMID: 34375547 PMCID: PMC8354752 DOI: 10.1098/rsob.210120] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Accepted: 07/13/2021] [Indexed: 01/14/2023] Open
Abstract
Ki-67 is one of the most famous marker proteins used by histologists to identify proliferating cells. Indeed, over 30 000 articles referring to Ki-67 are listed on PubMed. Here, we review some of the current literature regarding the protein. Despite its clinical importance, our knowledge of the molecular biology and biochemistry of Ki-67 is far from complete, and its exact molecular function(s) remain enigmatic. Furthermore, reports describing Ki-67 function are often contradictory, and it has only recently become clear that this proliferation marker is itself dispensable for cell proliferation. We discuss the unusual organization of the protein and its mRNA and how they relate to various models for its function. In particular, we focus on ways in which the intrinsically disordered structure of Ki-67 might aid in the assembly of the still-mysterious mitotic chromosome periphery compartment by controlling liquid-liquid phase separation of nucleolar proteins and RNAs.
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Affiliation(s)
- Lucy Remnant
- Wellcome Centre for Cell Biology, University of Edinburgh, ICB, Michael Swann Building, King's Buildings, Max Born Crescent, Edinburgh EH9 3BF, UK
| | - Natalia Y. Kochanova
- Wellcome Centre for Cell Biology, University of Edinburgh, ICB, Michael Swann Building, King's Buildings, Max Born Crescent, Edinburgh EH9 3BF, UK
| | - Caitlin Reid
- Wellcome Centre for Cell Biology, University of Edinburgh, ICB, Michael Swann Building, King's Buildings, Max Born Crescent, Edinburgh EH9 3BF, UK
| | - Fernanda Cisneros-Soberanis
- Wellcome Centre for Cell Biology, University of Edinburgh, ICB, Michael Swann Building, King's Buildings, Max Born Crescent, Edinburgh EH9 3BF, UK
| | - William C. Earnshaw
- Wellcome Centre for Cell Biology, University of Edinburgh, ICB, Michael Swann Building, King's Buildings, Max Born Crescent, Edinburgh EH9 3BF, UK
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8
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Tang WJ, Jin Z, Zhang YL, Liang YS, Cheng ZX, Chen LX, Liang YY, Wei XH, Kong QC, Guo Y, Jiang XQ. Whole-Lesion Histogram Analysis of the Apparent Diffusion Coefficient as a Quantitative Imaging Biomarker for Assessing the Level of Tumor-Infiltrating Lymphocytes: Value in Molecular Subtypes of Breast Cancer. Front Oncol 2021; 10:611571. [PMID: 33489920 PMCID: PMC7820903 DOI: 10.3389/fonc.2020.611571] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Accepted: 11/19/2020] [Indexed: 12/18/2022] Open
Abstract
Purpose To assess whether apparent diffusion coefficient (ADC) metrics can be used to assess tumor-infiltrating lymphocyte (TIL) levels in breast cancer, particularly in the molecular subtypes of breast cancer. Methods In total, 114 patients with breast cancer met the inclusion criteria (mean age: 52 years; range: 29–85 years) and underwent multi-parametric breast magnetic resonance imaging (MRI). The patients were imaged by diffusion-weighted (DW)-MRI (1.5 T) using a single-shot spin-echo echo-planar imaging sequence. Two readers independently drew a region of interest (ROI) on the ADC maps of the whole tumor. The mean ADC and histogram parameters (10th, 25th, 50th, 75th, and 90th percentiles of ADC, skewness, entropy, and kurtosis) were used as features to analyze associations with the TIL levels in breast cancer. Additionally, the correlation between the ADC values and Ki-67 expression were analyzed. Continuous variables were compared with Student’s t-test or Mann-Whitney U test if the variables were not normally distributed. Categorical variables were compared using Pearson’s chi-square test or Fisher’s exact test. Associations between TIL levels and imaging features were evaluated by the Mann-Whitney U and Kruskal-Wallis tests. Results A statistically significant difference existed in the 10th and 25th percentile ADC values between the low and high TIL groups in breast cancer (P=0.012 and 0.027). For the luminal subtype of breast cancer, the 10th percentile ADC value was significantly lower in the low TIL group (P=0.041); for the non-luminal subtype of breast cancer, the kurtosis was significantly lower in the low TIL group (P=0.023). The Ki-67 index showed statistical significance for evaluating the TIL levels in breast cancer (P=0.007). Additionally, the skewness was significantly higher for samples with high Ki-67 levels in breast cancer (P=0.029). Conclusions Our findings suggest that whole-lesion ADC histogram parameters can be used as surrogate biomarkers to evaluate TIL levels in molecular subtypes of breast cancer.
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Affiliation(s)
- Wen-Jie Tang
- Department of Radiology, Guangzhou First People's Hospital, School of Medicine, South China University of Technology, Guangzhou, China
| | - Zhe Jin
- Department of Radiology, Guangzhou First People's Hospital, School of Medicine, South China University of Technology, Guangzhou, China
| | - Yan-Ling Zhang
- Department of Ultrasound, The Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Yun-Shi Liang
- Department of Pathology, Guangzhou First People's Hospital, School of Medicine, South China University of Technology, Guangzhou, China
| | - Zi-Xuan Cheng
- Department of Radiology, Guangzhou First People's Hospital, School of Medicine, South China University of Technology, Guangzhou, China
| | - Lei-Xin Chen
- Department of Radiology, Guangzhou First People's Hospital, School of Medicine, South China University of Technology, Guangzhou, China
| | - Ying-Ying Liang
- Department of Radiology, Guangzhou First People's Hospital, School of Medicine, South China University of Technology, Guangzhou, China
| | - Xin-Hua Wei
- Department of Radiology, Guangzhou First People's Hospital, School of Medicine, South China University of Technology, Guangzhou, China
| | - Qing-Cong Kong
- Department of Radiology, The Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Yuan Guo
- Department of Radiology, Guangzhou First People's Hospital, School of Medicine, South China University of Technology, Guangzhou, China
| | - Xin-Qing Jiang
- Department of Radiology, Guangzhou First People's Hospital, School of Medicine, South China University of Technology, Guangzhou, China
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Cheng L, Tan Z, Huang Z, Pan Y, Zhang W, Wang J. Expression Profile and Prognostic Values of Mini-Chromosome Maintenance Families (MCMs) in Breast Cancer. Med Sci Monit 2020; 26:e923673. [PMID: 32830194 PMCID: PMC7461652 DOI: 10.12659/msm.923673] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Background Mini-chromosome maintenance families (MCMs) were considered the key factors for DNA replication initiation. Emerging evidences indicate that MCM2-7 (MCMs) are highly expressed in tissues from various malignant tumors. However, little is known about the clinical values of MCMs in breast cancer. Material/Methods In our study, a comprehensive bioinformatics analysis was performed to investigate expression patterns, potential functions, and prognostic values of MCMs in breast cancer, through ONCOMINE, bc-GenExMiner v4.1, Kaplan-Meier Plotter, cBioPortal and GeneMANIA databases. Results We found that mRNA levels of MCMs were significantly elevated in breast cancer, especially in fast-growing and spreading tumor subtypes. These over-expressed MCMs predicted worse prognosis for breast cancer patients with shorter relapse-free survival (RFS) and overall survival. Among these six factors, high expression of MCM2/4/5/7 significantly reduced the RFS for patients with Luminal-A or B breast cancer and elevated MCM6/7 indicated shorter RFS for patients with basal-like or HER2-positive breast cancer. We also found that genomic alteration of MCMs was frequently found in breast cancer and the most common alteration was mRNA upregulation and amplification. Furthermore, MCMs were highly correlated with CDC45, CDC7, TIMELESS, ORC6, MCM10, ORC5, ORC4 and ORC3, mainly functioning to control the DNA replication initiation and genome stability. Conclusions These results suggest that MCMs are attractive prognostic biomarkers for breast cancer. Our study also provides useful clinical information about the potential of MCMs as therapeutic targets.
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Affiliation(s)
- Lin Cheng
- Department of Breast and Thyroid Surgery, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, China (mainland)
| | - Zhangmin Tan
- Department of Obstetrics and Gynecology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China (mainland)
| | - Zenan Huang
- Department of Breast and Thyroid Surgery, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, China (mainland)
| | - Yuhang Pan
- Department of Pathology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China (mainland)
| | - Wenhui Zhang
- Department of Joint Surgery and Orthopedic Trauma, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China (mainland)
| | - Jiani Wang
- Department of Breast and Thyroid Surgery, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, China (mainland)
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10
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Overexpression of an Immune Checkpoint (CD155) in Breast Cancer Associated with Prognostic Significance and Exhausted Tumor-Infiltrating Lymphocytes: A Cohort Study. J Immunol Res 2020; 2020:3948928. [PMID: 32411795 PMCID: PMC7201814 DOI: 10.1155/2020/3948928] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 12/06/2019] [Accepted: 12/26/2019] [Indexed: 12/13/2022] Open
Abstract
Purpose The immune checkpoint inhibitor is approved for breast cancer treatment, but the low expression of PD-L1 limits the immunotherapy. CD155 is another immune checkpoint protein in cancers and interacts with ligands to regulate immune microenvironment. This study is aimed at investigating the expression of CD155 and the association with prognosis and pathological features of breast cancer. Methods 126 patients were recruited this cohort study consecutively, and CD155 expression on tumor cells was detected by immunohistochemistry. The Kaplan-Meier survival curve and Cox hazard regression model were used to estimate the association. Results 38.1% patients had an overexpression of CD155, and the proportion of tumor cells with CD155 overexpression was 17%, 39%, 37%, and 62% among Luminal A, Luminal B, HER2-positive, and triple negative breast cancer cases, respectively (p < 0.05). Patients with CD155 overexpression had the Ki-67 index significantly higher than that of patients with low expression (42% vs. 26%). Though the number of tumor-infiltrating lymphocytes was higher among patients with CD155 overexpression (144/HPF vs. 95/HPF), the number of PD-1+ lymphocytes was significantly higher (52/HPF vs. 25/HPF, p < 0.05). Patients of CD155 overexpression had the disease-free and overall survival decreased by 13 months and 9 months, respectively (p < 0.05). CD155 overexpression was associated with an increased relapse (HR = 13.93, 95% CI 2.82, 68.91) and death risk for breast cancer patients (HR = 5.47, 1.42, 20.99). Conclusions Overexpression of CD155 was correlated with more proliferative cancer cells and a dysfunctional immune microenvironment. CD155 overexpression introduced a worse relapse-free and overall survival and might be a potential immunotherapy target for breast cancer.
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11
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Invasive ductal breast cancer: preoperative predict Ki-67 index based on radiomics of ADC maps. Radiol Med 2019; 125:109-116. [PMID: 31696388 DOI: 10.1007/s11547-019-01100-1] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Accepted: 10/24/2019] [Indexed: 12/11/2022]
Abstract
PURPOSE The purpose of this study is to develop a radiomics model for predicting the Ki-67 proliferation index in patients with invasive ductal breast cancer through magnetic resonance imaging (MRI) preoperatively. MATERIALS AND METHODS A total of 128 patients who were clinicopathologically diagnosed with invasive ductal breast cancer were recruited. This cohort included 32 negative Ki67 expression (Ki67 proliferation index < 14%) and 96 cases with positive Ki67 expression (Ki67 proliferation index ≥ 14%). All patients had undergone diffusion-weighted imaging (DWI) MRI before surgery on a 3.0T MRI scanner. Radiomics features were extracted from apparent diffusion coefficient (ADC) maps which were obtained by DWI-MRI from patients with invasive ductal breast cancer. 80% of the patients were divided into training set to build radiomics model, and the rest into test set to evaluate its performance. The least absolute shrinkage and selection operator (LASSO) was used to select radiomics features, and then, the logistic regression (LR) model was established using fivefold cross-validation to predict the Ki-67 index. The performance was evaluated by receiver-operating characteristic (ROC) analysis, accuracy, sensitivity and specificity. RESULTS Quantitative imaging features (n = 1029) were extracted from ADC maps, and 11 features were selected to construct the LR model. Good identification ability was exhibited by the ADC-based radiomics model, with areas under the ROC (AUC) values of 0.75 ± 0.08, accuracy of 0.71 in training set and 0.72, 0.70 in test set. CONCLUSIONS The ADC-based radiomics model is a feasible predictor for the Ki-67 index in patients with invasive ductal breast cancer. Therefore, we proposed that three-dimensional imaging features from ADC maps could be used as candidate biomarker for preoperative prediction the Ki-67 index noninvasively.
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12
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Cell Counts, rather than Proportion, of CD8/PD-1 Tumor-Infiltrating Lymphocytes in a Tumor Microenvironment Associated with Pathological Characteristics of Chinese Invasive Ductal Breast Cancer. J Immunol Res 2019; 2019:8505021. [PMID: 31049361 PMCID: PMC6462317 DOI: 10.1155/2019/8505021] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Revised: 01/25/2019] [Accepted: 03/04/2019] [Indexed: 01/12/2023] Open
Abstract
Objective This study is aimed at investigating the association of exhausted CD8+ tumor-infiltrating lymphocytes with clinic-pathological factors. Methods 133 patients diagnosed with primary invasive ductal breast cancer were recruited into the cross-sectional study consecutively. Immunohistochemistry was used to detect biomarker expression on formalin-fixed and paraffin-embedded sections. Double staining of CD8 and PD-1 was conducted on lymphocytes. Results The proportion of CD8+/PD-1− TILs was 16% among patients with axillary lymph node metastasis, significantly lower than those without metastasis (24%). The expression of CK7, CK20, or Ki-67 was not related with the proportion of phenotypes of CD8/PD-1 TILs. Younger patients had more cell counts of CD8+/PD-1− TILs than elderly patients (18/HPF vs. 9/HPF, p < 0.05). Patients with axillary lymph node metastasis had less CD8+/PD-1− TILs than those without metastasis (11/HPF vs. 27/HPF, p < 0.05). Median counts of CD8+/PD-1− TILs among patients with CK20 and E-Cad expression were 33/HPF and 14/HPF, significantly higher than those among patients with negative CK20 (16/HPF) and E-Cad expression (6/HPF). Ki-67 index had a significant correlation with cell counts of CD8+/PD-1+ TILs and CD8+/PD-1− TILs, and the correlation coefficients were 0.19 and 0.21 (p < 0.05), respectively. Conclusion The proportion of CD8+/PD-1− TILs was related with metastatic status of the axillary lymph node but cell counts of CD8+/PD-1− TILs were related with metastatic status of the axillary lymph node and expression of CK7, CK20, E-Cad, and Ki-67. Absolute cell counts, not proportion of CD8/PD-1 TILs, were more likely to distinguish clinic and pathologic characteristics of breast cancer.
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Belső N, Gubán B, Manczinger M, Kormos B, Bebes A, Németh I, Veréb Z, Széll M, Kemény L, Bata-Csörgő Z. Differential role of D cyclins in the regulation of cell cycle by influencing Ki67 expression in HaCaT cells. Exp Cell Res 2019; 374:290-303. [DOI: 10.1016/j.yexcr.2018.11.030] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Revised: 11/28/2018] [Accepted: 11/30/2018] [Indexed: 11/30/2022]
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14
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Wang R, Shi F, Zhao L, Zhao Y, Wu G, Song QK. High expression of E-cadherin and Ki-67 associated with functional/dysfunctional phenotypes of tumor-infiltrating lymphocytes among Chinese patients with operable breast cancer. J Int Med Res 2018; 46:5219-5227. [PMID: 30318965 PMCID: PMC6300947 DOI: 10.1177/0300060518799567] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2018] [Accepted: 08/17/2018] [Indexed: 12/17/2022] Open
Abstract
OBJECTIVE Breast cancer has become the most common cancer in women in China, and the clinicopathological features differ from those in Western patients. This study was performed to investigate the distribution of programmed cell death protein 1 (PD-1)+/PD-1- tumor-infiltrating lymphocytes (TILs) and its association with clinicopathological features among Chinese patients with breast cancer. METHODS In total, 133 consecutive patients with primary breast cancer were recruited into this cross-sectional study from 2012 to 2013. TILs were measured by cell counts under high-power fields (HPFs). Immunohistochemistry was used to detect PD-1 expression on tumor-infiltrating lymphocytes in the microenvironment. RESULTS The median cell counts of the overall TILs, PD-1+ TILs, and PD-1- TILs were 80, 18, and 55/HPF, respectively. The number of PD-1- TILs was significantly lower in older than younger patients (50 vs. 60/HPF). Patients with positive E-cadherin expression had more PD-1- TILs than patients with negative E-cadherin expression (57 vs. 27/HPF). The Ki-67 index was positively correlated with the cell counts of PD-1+ TILs, and the correlation coefficient was 0.29. CONCLUSIONS PD-1 expression on TILs had different clinicopathological features in Chinese patients with breast cancer. E-Cadherin expression was associated with PD-1- TILs; however, Ki-67 expression was associated with PD-1+ TILs.
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Affiliation(s)
- Ruibin Wang
- Beijing Shijitan Hospital, Capital Medical University, Beijing, China
| | - Feng Shi
- Beijing Shijitan Hospital, Capital Medical University, Beijing, China
| | - Lin Zhao
- Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Yanjie Zhao
- Beijing Shijitan Hospital, Capital Medical University, Beijing, China
| | - Guangjiang Wu
- Beijing Shijitan Hospital, Capital Medical University, Beijing, China
| | - Qing-Kun Song
- Beijing Shijitan Hospital, Capital Medical University, Beijing, China
- Beijing Key Laboratory of Cancer Therapeutic Vaccine, Beijing, China
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15
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Takkem A, Barakat C, Zakaraia S, Zaid K, Najmeh J, Ayoub M, Seirawan MY. Ki-67 Prognostic Value in Different Histological Grades of Oral Epithelial Dysplasia and Oral Squamous Cell Carcinoma. Asian Pac J Cancer Prev 2018; 19:3279-3286. [PMID: 30486632 PMCID: PMC6318382 DOI: 10.31557/apjcp.2018.19.11.3279] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Introduction: Abnormal cell proliferation appears to be a possible predictor of tumorigenesis, Ki-67 protein expression is closely related to the cell proliferation and could be used as a biomarker for the growth in the most of human tumors. The aim of the study: Investigating of Ki-67 expression in the pathological grades of oral epithelial dysplasia and oral squamous cell carcinomas. Materials and Methods: The sample consisted of 30 formalin-fixed, paraffin-embedded specimens of oral epithelial dysplasia (OED), 30 other of oral squamous cell carcinomas (OSCC), and 10 normal oral epithelium (NOE) were conventionally stained with hematoxylin and eosin and immunohistochemically stained with Ki-67 monoclonal antibody. Results: Expression of Ki-67 was restricted to the basal layers in the normal oral epithelium whereas Ki-67 positive cells in oral epithelial dysplasia (OED) were located in the basal, suprabasal and spinous layers, Ki-67 expression was increased in high-risk cases. Ki-67 positive cells in well-differentiated (OSCC) were located mainly in the periphery of the tumor nests, in moderately-differentiated (OSCC) were located in both peripheral and part of a center of the tumor nests whereas it was diffused in most of the Poorly-differentiated (OSCC). Statistical analysis indicated a significant difference between the expression in (OED) and (NOE), (OSCC) and (NOE), and no differences between (OED) and (OSCC). Conclusion: This study has concluded that Ki-67 antigen could be used as a marker for the histological grading of OED and OSCC, Expression of Ki 67 increased according to the severity of oral epithelial dysplasia.
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Affiliation(s)
- Amer Takkem
- Department of Oral Histology and Pathology, University of Damascus, Damascus, Syria.
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16
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Gu J, Dai S, Liu Y, Liu H, Zhang Y, Ji X, Yu F, Zhou Y, Chen L, Tse WKF, Wong CKC, Chen B, Shi H. Activation of Ca 2+-sensing receptor as a protective pathway to reduce Cadmium-induced cytotoxicity in renal proximal tubular cells. Sci Rep 2018; 8:1092. [PMID: 29348484 PMCID: PMC5773512 DOI: 10.1038/s41598-018-19327-9] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Accepted: 12/27/2017] [Indexed: 01/16/2023] Open
Abstract
Cadmium (Cd), as an extremely toxic metal could accumulate in kidney and induce renal injury. Previous studies have proved that Cd impact on renal cell proliferation, autophagy and apoptosis, but the detoxification drugs and the functional mechanism are still in study. In this study, we used mouse renal tubular epithelial cells (mRTECs) to clarify Cd-induced toxicity and signaling pathways. Moreover, we proposed to elucidate the prevent effect of activation of Ca2+ sensing receptor (CaSR) by Calcimimetic (R-467) on Cd-induced cytotoxicity and underlying mechanisms. Cd induced intracellular Ca2+ elevation through phospholipase C-inositol 1, 4, 5-trisphosphate (PLC) followed stimulating p38 mitogen-activated protein kinases (MAPK) activation and suppressing extracellular signal-regulated kinase (ERK) activation, which leaded to increase apoptotic cell death and inhibit cell proliferation. Cd induced p38 activation also contribute to autophagic flux inhibition that aggravated Cd induced apoptosis. R-467 reinstated Cd-induced elevation of intracellular Ca2+ and apoptosis, and it also increased cell proliferation and restored autophagic flux by switching p38 to ERK pathway. The identification of the activation of CaSR-mediated protective pathway in renal cells sheds light on a possible cellular protective mechanism against Cd-induced kidney injury.
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Affiliation(s)
- Jie Gu
- Institute of Life Science, Jiangsu University, Zhenjiang, Jiangsu, 212000, China
| | - Shuya Dai
- Institute of Life Science, Jiangsu University, Zhenjiang, Jiangsu, 212000, China
| | - Yanmin Liu
- Institute of Life Science, Jiangsu University, Zhenjiang, Jiangsu, 212000, China
| | - Haitao Liu
- Institute of Life Science, Jiangsu University, Zhenjiang, Jiangsu, 212000, China
| | - Yao Zhang
- Medical Section, The Third Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, 212000, China
| | - Xingqi Ji
- Institute of Life Science, Jiangsu University, Zhenjiang, Jiangsu, 212000, China
| | - Feng Yu
- Institute of Life Science, Jiangsu University, Zhenjiang, Jiangsu, 212000, China
| | - Yang Zhou
- Institute of Life Science, Jiangsu University, Zhenjiang, Jiangsu, 212000, China
| | - Liang Chen
- Institute of Life Science, Jiangsu University, Zhenjiang, Jiangsu, 212000, China
| | | | - Chris Kong Chu Wong
- Department of Biology, Hong Kong Baptist University, Kowloon Tong, Hong Kong, China
| | - Binghai Chen
- Department of urology, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, 212000, China
| | - Haifeng Shi
- Institute of Life Science, Jiangsu University, Zhenjiang, Jiangsu, 212000, China.
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17
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Zhang L, Niu X, Sun L, She Z, Tan R, Wang W. Immune response of bovine sourced cross-linked collagen sponge for hemostasis. J Biomater Appl 2017; 32:920-931. [PMID: 29199891 DOI: 10.1177/0885328217744080] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A comprehensive immunogenicity scheme is proposed to examine immune response of bovine sourced hemostasis collagen sponge to establish foundation for further researches and decrease the incidence of adverse reaction in clinical trials. Compared with negative control group without any implant, spleen and lymph nodes morphology show no apparent swelling in mice with different doses of collagen sponge implants. Immune cells population, especially lymph nodes cells population, is practically coincident with organs. However, splenic cells display slight proliferation in early phase following collagen sponge implantation. Splenic cells apoptosis also demonstrates no significant difference among all groups. T lymphocytes subsets, CD4/CD8 cells ratio, in spleen and lymph nodes are practically normal. Splenic cells Ki67 + proportions do not exhibit significant difference between collagen sponge groups and negative control group. Humoral response is determined by detection of IgG and IgM concentration in serum, not exhibiting remarkable increase with collagen sponge implantation, compared to the drastic increase in positive control group with bovine tendon implantation. Local analysis around implants by hematoxylin-eosin staining discovers slight cell infiltration around collagen sponge. Tumour necrosis factor-α immunostaining indicates slight inflammation in early phase following collagen sponge implantation, but interferon-γ immunostaining is negligible even in positive control group. Collagen sponge, especially in high dose, may have evoked benign immune response in BALB/c mice, but this response is transient. The present evaluation scheme for immune response is integrated and comprehensive, suitable for various biomaterials.
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Affiliation(s)
- Lin Zhang
- 1 Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, P. R. China
| | - Xufeng Niu
- 1 Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, P. R. China
| | - Lei Sun
- 1 Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, P. R. China
| | - Zhending She
- 2 Shenzhen Lando Biomaterials Co., Ltd, Shenzhen, P. R. China
| | - Rongwei Tan
- 2 Shenzhen Lando Biomaterials Co., Ltd, Shenzhen, P. R. China
| | - Wei Wang
- 3 Department of Immunology, School of Basic Medical Sciences, 33133 Peking University , Key Laboratory of Medical Immunology, Ministry of Health (Peking University), Beijing, P. R. China
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18
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Booth DG, Earnshaw WC. Ki-67 and the Chromosome Periphery Compartment in Mitosis. Trends Cell Biol 2017; 27:906-916. [PMID: 28838621 DOI: 10.1016/j.tcb.2017.08.001] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Revised: 08/01/2017] [Accepted: 08/02/2017] [Indexed: 12/12/2022]
Abstract
The chromosome periphery is a complex network of proteins and RNA molecules (many derived from nucleoli) that covers the outer surface of chromosomes and whose function remains mysterious. Although it was first described over 130 years ago, technological advances and the recent discovery that Ki-67 acts as an organiser of this region have allowed the chromosome periphery to be dissected in previously unattainable detail, leading to a revival of interest in this obscure chromosomal compartment. Here, we review the most recent advances into the composition, structure and function of the chromosome periphery, discuss possible roles of Ki-67 during mitosis and consider why this structure is likely to remain the focus of ongoing attention in the future.
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Affiliation(s)
- Daniel G Booth
- Centre For Neuroregeneration, Chancellor's Building, University of Edinburgh, Edinburgh, EH16 4SB, UK.
| | - William C Earnshaw
- Wellcome Trust Centre for Cell Biology, King's Buildings, University of Edinburgh, Edinburgh, EH9 3BF, UK.
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19
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Zhao L, Li YY, Li CW, Chao SS, Liu J, Nam HN, Dung NTN, Shi L, Wang DY. Increase of poorly proliferated p63 + /Ki67 + basal cells forming multiple layers in the aberrant remodeled epithelium in nasal polyps. Allergy 2017; 72:975-984. [PMID: 27807867 DOI: 10.1111/all.13074] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/28/2016] [Indexed: 12/16/2022]
Abstract
BACKGROUND Aberrant epithelial remodeling with the ectopic expression of p63 (basal cell markers) is an important pathologic phenomenon seen in chronically inflamed airway epithelium such as in nasal polyps (NPs). METHODS Biopsies were obtained from 55 NP patients and 18 healthy controls (inferior turbinate). Among NP patients, 15 were treated with oral and nasal steroids, so that two sets of NP biopsies were taken before and after the treatments. p63, Ki67, type IV β-tubulin, and cell cycle markers were investigated in these specimens. RESULTS The number of p63+ cells is significantly higher in both hyperplastic (1.53-fold, P < 0.0001) and squamous metaplastic (2.02-fold, P < 0.0001) epithelium from NPs than from healthy controls. There are three types of proliferative basal cells (p63+ /Ki67+ ) which are in different phases of the cell cycle, such as G1 phase (type I cells), S to G2 phase (type II cells), and mitosis (type III cells). Of importance, some type I cells may arrest after proliferation although they may still be p63+ /Ki67+ . In healthy epithelium, the ratio of the type I and II cells is almost 50:50. However, less type II cells are found in hyperplastic epithelium (34.85%, P = 0.012) and in squamous metaplastic epithelium (30.77%, P = 0.02) together with the presence of type III cells (3.45%, P = 0.01). These findings were not changed after steroid treatments. CONCLUSIONS An increase of poorly proliferated basal cells forming multiple layers, which may stain for basal cell markers but does not form a proper epidermal barrier, is an important histopathologic phenomenon in aberrant remodeled epithelium of NPs.
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Affiliation(s)
- L. Zhao
- Department of Otolaryngology; The Second Hospital of Shandong University; Shandong University; Jinan China
- Department of Otolaryngology; Yong Loo Lin School of Medicine; National University of Singapore; Singapore Singapore
| | - Y. Y. Li
- Department of Otolaryngology; Yong Loo Lin School of Medicine; National University of Singapore; Singapore Singapore
| | - C. W. Li
- Department of Otolaryngology; Yong Loo Lin School of Medicine; National University of Singapore; Singapore Singapore
| | - S. S. Chao
- Department of Otolaryngology; Yong Loo Lin School of Medicine; National University of Singapore; Singapore Singapore
| | - J. Liu
- Department of Otolaryngology; Yong Loo Lin School of Medicine; National University of Singapore; Singapore Singapore
| | - H. N. Nam
- Department of Otolaryngology; Pham Ngoc Thach University of Medicine; Ho Chi Minh City Vietnam
| | - N. T. N. Dung
- Department of Otolaryngology; Pham Ngoc Thach University of Medicine; Ho Chi Minh City Vietnam
| | - L. Shi
- Department of Otolaryngology; The Second Hospital of Shandong University; Shandong University; Jinan China
| | - D. Y. Wang
- Department of Otolaryngology; Yong Loo Lin School of Medicine; National University of Singapore; Singapore Singapore
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20
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Long-term follow-up and role of FDG PET in advanced pancreatic neuroendocrine patients treated with 177Lu-D OTATATE. Eur J Nucl Med Mol Imaging 2016; 44:490-499. [PMID: 27704193 DOI: 10.1007/s00259-016-3533-z] [Citation(s) in RCA: 85] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Accepted: 09/21/2016] [Indexed: 12/15/2022]
Abstract
PURPOSE Lu-DOTATATE (Lu-PRRT) is a valid therapeutic option in differentiated pancreatic neuroendocrine tumors (P-NETs). FDG PET seems to be an important prognostic factor in P-NETs. We evaluated the efficacy of Lu-PRRT and the role of FDG PET in 60 patients with advanced P-NETs. METHODS From March 2008 to June 2011, 60 consecutive patients with P-NETs were enrolled in the study. Follow-up lasted until March 2016. Eligible patients were treated with two different total cumulative activities (18.5 or 27.8 GBq in 5 cycles every 6-8 weeks), according to kidney and bone marrow parameters. RESULTS Twenty-eight patients received a mean full activity (FA) of 25.9 GBq and 32 a mean reduced activity (RA) of 18.5 GBq. The disease control rate (DCR), defined as the sum of CR+PR+SD was 85.7 % in the FA group and 78.1 % in the RA group. Median progression-free survival (mPFS) was 53.4 months in the FA group and 21.7 months in the RA group (P = 0.353). Median overall survival (mOS) was not reached (nr) in FA patients and was 63.8 months in the RA group (P = 0.007). Fifty-five patients underwent an FDG PET scan before Lu-PRRT, 32 (58 %) showing an increased FDG uptake in tumor sites. mPFS was 21.1 months in FDG PET-positive patients and 68.7 months in the FDG PET-negative group (P < 0.0002), regardless of the total activity administered. CONCLUSION Both FA and RA are active in patients undergoing Lu-PRRT. However, an FA of 27.8 GBq of Lu-PRRT prolongs PFS and OS compared to an RA of 18.5 GBq. Our results indicate that FDG PET is an independent prognostic factor in this patient setting.
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21
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Schimmack S, Lawrence B, Kenney B, Schmitz-Winnenthal H, Modlin IM, Kidd M. Minichromosome Maintenance Expression Defines Slow-Growing Gastroenteropancreatic Neuroendocrine Neoplasms. Transl Oncol 2016; 9:411-418. [PMID: 27751345 PMCID: PMC5067926 DOI: 10.1016/j.tranon.2016.07.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Revised: 07/13/2016] [Accepted: 07/13/2016] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND: Small intestinal neuroendocrine neoplasm (SI-NEN) proliferation is quantified by Ki67 measurements which capture G1-G2M phases of the cell cycle. G0 and early G1 phases, typical of slow-growing cells, can be detected by minichromosome maintenance protein (MCM) expression. We hypothesized that these replication licensing markers may provide clinically relevant information to augment Ki67 in low-grade neuroendocrine neoplasia. METHODS: Immunohistochemical staining (IHC), Western blot analysis, quantitative polymerase chain reaction, and copy number variations of MCM2, MCM3, and Ki67 were undertaken in SI-NENs (n = 22). MCM and Ki67 expression was compared by Kaplan-Meier survival analysis (tissue microarray, independent set [n = 55]). Forty-three pancreatic NENs and 14 normal tissues were included as controls. RESULTS: In SI-NENs, MCM2 (mean: 21.2%: range: 16%-25%) and MCM3 (28.7%: 22%-34%) were detected in significantly more cells than Ki67 (2.3%: 0%-7%, P < .01). MCM2 mRNA correlated with Ki67 IHC (P < .05). MCM3 protein expression was higher in metastases (38-fold) than in normal small intestine (P = .06) and was largely absent in normal neuroendocrine cells. There was considerable variation at the MCM copy number level (0-4 copies). MCM3 expression in proliferating cells significantly predicted overall survival (P < .002). Combinations of Ki67 and MCM2/3 in algorithms differentiated low and higher proliferative lesions (overall survival: 12 vs 6.1 years, P = .06). MCM expression was not informative in pancreatic NENs. CONCLUSION: MCMs are expressed in a higher proportion of NEN cells than Ki67 in slow-growing small intestinal lesions and correlate with survival. Assessment can be used to augment Ki67 to improve prognostic classification in these low-grade tumors.
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Affiliation(s)
- Simon Schimmack
- Gastrointestinal Pathobiology Research Group, Department of Gastrointestinal Surgery, Yale University School of Medicine, PO Box 208602, New Haven, CT, USA; University Hospital of General, Visceral and Transplantation-Surgery of Heidelberg, Im Neuenheimer Feld 110, 69120, Heidelberg, Germany.
| | - Ben Lawrence
- Gastrointestinal Pathobiology Research Group, Department of Gastrointestinal Surgery, Yale University School of Medicine, PO Box 208602, New Haven, CT, USA.
| | - Barton Kenney
- Department of Pathology, Division of Gastrointestinal and Hepatic Pathology, Yale University School of Medicine, PO Box 208023, New Haven, CT, USA.
| | - Hubertus Schmitz-Winnenthal
- University Hospital of General, Visceral and Transplantation-Surgery of Heidelberg, Im Neuenheimer Feld 110, 69120, Heidelberg, Germany.
| | - Irvin M Modlin
- Gastrointestinal Pathobiology Research Group, Department of Gastrointestinal Surgery, Yale University School of Medicine, PO Box 208602, New Haven, CT, USA.
| | - Mark Kidd
- Gastrointestinal Pathobiology Research Group, Department of Gastrointestinal Surgery, Yale University School of Medicine, PO Box 208602, New Haven, CT, USA.
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The ROCK/GGTase Pathway Are Essential to the Proliferation and Differentiation of Neural Stem Cells Mediated by Simvastatin. J Mol Neurosci 2016; 60:474-485. [DOI: 10.1007/s12031-016-0811-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Accepted: 08/01/2016] [Indexed: 11/25/2022]
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23
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Zielinski R, Kobos J, Zakrzewska A. A case of intraparotid schwannoma in a juvenile: Clinical, pathological, ultrastructural, and immunohistopathological study, including an examination of Ki-67 and MCM-3 expressions. Ultrastruct Pathol 2016; 40:222-8. [PMID: 27409148 DOI: 10.1080/01913123.2016.1192234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Pleomorphic adenoma, the most common benign nonvascular tumor of the parotid gland in juveniles, should be differentiated from other extremely rare tumors, including schwannoma. In this article, we present a rare case of an intraparotid schwannoma in a juvenile, along with the patient history, a description of pathological features, and the results of ultrastructural and immunohistochemical examination. The respective labeling indexes of Ki-67 and MCM-3, i.e., the mean proportions of positive tumor cells out of 1000 tumoral cells counted in 10 microscopic fields at ×400 magnification, given as a percentage, were found to be 0.82% and 0.4%, respectively.
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Affiliation(s)
- Rafal Zielinski
- a Department of Pediatric Otorhinolaryngology , Medical University of Lodz , Lodz , Poland
| | - Jozef Kobos
- b Department of Pathology, Central Clinical Hospital , Medical University of Lodz , Lodz , Poland
| | - Anna Zakrzewska
- a Department of Pediatric Otorhinolaryngology , Medical University of Lodz , Lodz , Poland
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24
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Nowinska K, Chmielewska M, Piotrowska A, Pula B, Pastuszewski W, Krecicki T, Podhorska-Okołow M, Zabel M, Dziegiel P. Correlation between levels of expression of minichromosome maintenance proteins, Ki-67 proliferation antigen and metallothionein I/II in laryngeal squamous cell cancer. Int J Oncol 2015; 48:635-45. [PMID: 26648405 DOI: 10.3892/ijo.2015.3273] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Accepted: 10/27/2015] [Indexed: 11/06/2022] Open
Abstract
MCM2, MCM3 and MCM7 are minichromosome maintenance proteins found in dividing cells and they play a role in DNA synthesis. Increased MCM expression level is observed in cells of different cancer types. Additionally, metallothioneins (MT-I/II) are involved in control of cell proliferation and differentiation and changes of their expression are observed in many types of cancer. Ki-67 is known cancer cell proliferation antigen currently used in prognostic evaluation. The study material consisted of 83 laryngeal squamous cell cancer (LSCC) cases and 10 benign hypertrophic lesions of larynx epithelium as a control group. For the present study, laryngeal cancer cell line HEp-2 and human keratinocytes were employed, and to evaluate expression of all the markers, immunohistochemical method (IHC), immunofluorescence (IF) and western blot analysis were used. Statistical analysis showed strong positive correlation between expression of MCM2, MCM3, MCM7 and Ki-67 antigen in LSCC. Additionally, moderate positive correlation was observed between MCM3 and MT-I/II expression. In cancer cells, the level of expression of MCM3, MCM2, MCM7 and Ki-67 markers was increasing with the grade of LSCC malignancy. IF and western blot analysis showed higher MCM2, MCM3, MCM7 expression in HEp-2 cells in comparison to their expression in keratinocytes. MCM proteins might be useful markers of cell proliferation in LSCC.
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Affiliation(s)
- Katarzyna Nowinska
- Department of Histology and Embryology, Wroclaw Medical University, Wroclaw, Poland
| | | | | | - Bartosz Pula
- Department of Histology and Embryology, Wroclaw Medical University, Wroclaw, Poland
| | | | - Tomasz Krecicki
- Department of Otolaryngology, Head and Neck Surgery, Wroclaw Medical University, Wroclaw, Poland
| | | | - Maciej Zabel
- Department of Histology and Embryology, Wroclaw Medical University, Wroclaw, Poland
| | - Piotr Dziegiel
- Department of Histology and Embryology, Wroclaw Medical University, Wroclaw, Poland
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25
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Soares AB, Altemani A, de Oliveira TR, de Oliveira Fonseca Rodrigues F, Ribeiro-Silva A, Soave DF, Passador-Santos F, Brum ST, Napimoga MH, de Araújo VC. Comparison of the blood and lymphatic microvessel density of pleomorphic adenoma and Basal cell adenoma. Clin Med Insights Pathol 2015; 8:17-21. [PMID: 25987856 PMCID: PMC4405080 DOI: 10.4137/cpath.s23035] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Revised: 01/12/2015] [Accepted: 01/12/2015] [Indexed: 11/05/2022] Open
Abstract
BACKGROUND Pleomorphic adenoma (PA) is the most common tumor of the salivary gland, while basal cell adenoma (BCA) is an uncommon neoplasm. Blood and lymphatic vessels are crucial for tumor metabolism. The aim of this study was to compare the blood and lymphatic vascular density and vascular and endothelial growth factor (VEGF) expression in PA and BCA tumors. In addition, cell proliferation was evaluated in these tumors. METHODS Blood and lymphatic vessel content, VEGF expression, and cell proliferation were analyzed in 30 cases of PA and 13 cases of BCA by immu-nohistochemistry using antibodies for CD34, CD105, D2–40, VEGF, and Mcm−2. RESULTS Regarding CD34 and CD105 expression, PA demonstrated a high vascularity and a low number of positive vessels, respectively. D2–40-positive lymphatic vessels were mainly located in the tumor capsules, with small intratumoral lymphatic vessels observed occasionally. VEGF expression revealed a remarkably heterogeneous immunoreactivity, alternating from weak or negative to positive or intense. BCA presented significantly higher CD34, CD34, CD105, D2–40, and VEGF expression compared to PA. No significant difference was found in cell proliferation between the tumors. CONCLUSION Although PA and BCA are considered part of the same spectrum of differentiation, this study showed that the blood and lymphatic vascularization of these tumors is different.
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Affiliation(s)
- Andresa Borges Soares
- Department of Oral Pathology, São Leopoldo Mandic Institute and Research Center, Campinas, São Paulo, Brazil
| | - Albina Altemani
- Department of Pathology, School of Medicine, State University of Campinas (UNICAMP), São Paulo, Brazil
| | - Thais Ribeiro de Oliveira
- Department of Oral Pathology, São Leopoldo Mandic Institute and Research Center, Campinas, São Paulo, Brazil
| | | | - Alfredo Ribeiro-Silva
- Department of Pathology, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil
| | - Danilo Figueiredo Soave
- Department of Pathology, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil
| | - Fabricio Passador-Santos
- Department of Oral Pathology, São Leopoldo Mandic Institute and Research Center, Campinas, São Paulo, Brazil
| | - Suellen Trentin Brum
- Department of Oral Pathology, São Leopoldo Mandic Institute and Research Center, Campinas, São Paulo, Brazil
| | - Marcelo Henrique Napimoga
- Department of Oral Pathology, São Leopoldo Mandic Institute and Research Center, Campinas, São Paulo, Brazil
| | - Vera Cavalcanti de Araújo
- Department of Oral Pathology, São Leopoldo Mandic Institute and Research Center, Campinas, São Paulo, Brazil
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Liyanage VRB, Zachariah RM, Davie JR, Rastegar M. Ethanol deregulates Mecp2/MeCP2 in differentiating neural stem cells via interplay between 5-methylcytosine and 5-hydroxymethylcytosine at the Mecp2 regulatory elements. Exp Neurol 2015; 265:102-17. [PMID: 25620416 DOI: 10.1016/j.expneurol.2015.01.006] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2014] [Revised: 12/23/2014] [Accepted: 01/18/2015] [Indexed: 11/29/2022]
Abstract
Methyl CpG Binding Protein 2 (MeCP2) is an important epigenetic factor in the brain. MeCP2 expression is affected by different environmental insults including alcohol exposure. Accumulating evidence supports the role of aberrant MeCP2 expression in ethanol exposure-induced neurological symptoms. However, the underlying molecular mechanisms of ethanol-induced MeCP2 deregulation remain elusive. To study the effect of ethanol on Mecp2/MeCP2 expression during neurodifferentiation, we established an in vitro model of ethanol exposure, using differentiating embryonic brain-derived neural stem cells (NSC). Previously, we demonstrated the impact of DNA methylation at the Mecp2 regulatory elements (REs) on Mecp2/MeCP2 expression in vitro and in vivo. Here, we studied whether altered DNA methylation at these REs is associated with the Mecp2/MeCP2 misexpression induced by ethanol. Binge-like and continuous ethanol exposure upregulated Mecp2/MeCP2, while ethanol withdrawal downregulated its expression. DNA methylation analysis by methylated DNA immunoprecipitation indicated that increased 5-hydroxymethylcytosine (5hmC) and decreased 5-methylcytosine (5mC) enrichment at specific REs were associated with upregulated Mecp2/MeCP2 following continuous ethanol exposure. The reduced Mecp2/MeCP2 expression upon ethanol withdrawal was associated with reduced 5hmC and increased 5mC enrichment at these REs. Moreover, ethanol altered global DNA methylation (5mC and 5hmC). Under the tested conditions, ethanol had minimal effects on NSC cell fate commitment, but caused changes in neuronal morphology and glial cell size. Taken together, our data represent an epigenetic mechanism for ethanol-mediated misexpression of Mecp2/MeCP2 in differentiating embryonic brain cells. We also show the potential role of DNA methylation and MeCP2 in alcohol-related neurological disorders, specifically Fetal Alcohol Spectrum Disorders.
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Affiliation(s)
- Vichithra Rasangi Batuwita Liyanage
- Regenerative Medicine Program, College of Medicine, Faculty of Health Sciences, University of Manitoba, 745 Bannatyne Avenue, Winnipeg, Manitoba R3E 0J9, Canada; Department of Biochemistry and Medical Genetics, College of Medicine, Faculty of Health Sciences, University of Manitoba, 745 Bannatyne Avenue, Winnipeg, Manitoba R3E 0J9, Canada.
| | - Robby Mathew Zachariah
- Regenerative Medicine Program, College of Medicine, Faculty of Health Sciences, University of Manitoba, 745 Bannatyne Avenue, Winnipeg, Manitoba R3E 0J9, Canada; Department of Biochemistry and Medical Genetics, College of Medicine, Faculty of Health Sciences, University of Manitoba, 745 Bannatyne Avenue, Winnipeg, Manitoba R3E 0J9, Canada.
| | - James Ronald Davie
- Department of Biochemistry and Medical Genetics, College of Medicine, Faculty of Health Sciences, University of Manitoba, 745 Bannatyne Avenue, Winnipeg, Manitoba R3E 0J9, Canada.
| | - Mojgan Rastegar
- Regenerative Medicine Program, College of Medicine, Faculty of Health Sciences, University of Manitoba, 745 Bannatyne Avenue, Winnipeg, Manitoba R3E 0J9, Canada; Department of Biochemistry and Medical Genetics, College of Medicine, Faculty of Health Sciences, University of Manitoba, 745 Bannatyne Avenue, Winnipeg, Manitoba R3E 0J9, Canada.
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Smith CL, Matheson TD, Trombly DJ, Sun X, Campeau E, Han X, Yates JR, Kaufman PD. A separable domain of the p150 subunit of human chromatin assembly factor-1 promotes protein and chromosome associations with nucleoli. Mol Biol Cell 2014; 25:2866-81. [PMID: 25057015 PMCID: PMC4161520 DOI: 10.1091/mbc.e14-05-1029] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Chromatin assembly factor-1 contains a separable domain unrelated to histone deposition, which provides a previously unrecognized ability to maintain nucleolar protein and chromosome associations. Chromatin assembly factor-1 (CAF-1) is a three-subunit protein complex conserved throughout eukaryotes that deposits histones during DNA synthesis. Here we present a novel role for the human p150 subunit in regulating nucleolar macromolecular interactions. Acute depletion of p150 causes redistribution of multiple nucleolar proteins and reduces nucleolar association with several repetitive element–containing loci. Of note, a point mutation in a SUMO-interacting motif (SIM) within p150 abolishes nucleolar associations, whereas PCNA or HP1 interaction sites within p150 are not required for these interactions. In addition, acute depletion of SUMO-2 or the SUMO E2 ligase Ubc9 reduces α-satellite DNA association with nucleoli. The nucleolar functions of p150 are separable from its interactions with the other subunits of the CAF-1 complex because an N-terminal fragment of p150 (p150N) that cannot interact with other CAF-1 subunits is sufficient for maintaining nucleolar chromosome and protein associations. Therefore these data define novel functions for a separable domain of the p150 protein, regulating protein and DNA interactions at the nucleolus.
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Affiliation(s)
- Corey L Smith
- Program in Gene Function and Expression, Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, MA 01605
| | - Timothy D Matheson
- Program in Gene Function and Expression, Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, MA 01605
| | - Daniel J Trombly
- Program in Gene Function and Expression, Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, MA 01605
| | - Xiaoming Sun
- Program in Gene Function and Expression, Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, MA 01605
| | - Eric Campeau
- Program in Gene Function and Expression, Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, MA 01605
| | - Xuemei Han
- Department of Chemical Physiology, Scripps Research Institute, La Jolla, CA 92037
| | - John R Yates
- Department of Chemical Physiology, Scripps Research Institute, La Jolla, CA 92037
| | - Paul D Kaufman
- Program in Gene Function and Expression, Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, MA 01605
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Takagi M, Nishiyama Y, Taguchi A, Imamoto N. Ki67 antigen contributes to the timely accumulation of protein phosphatase 1γ on anaphase chromosomes. J Biol Chem 2014; 289:22877-22887. [PMID: 25012651 DOI: 10.1074/jbc.m114.556647] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Ki67 is a protein widely used as cell-proliferation marker, with its cellular functions being hardly unveiled. In this paper, we present the direct interaction between Ki67 and PP1γ, a protein phosphatase showing characteristic accumulation on anaphase chromosomes via the canonical PP1-binding motif within Ki67. In cells depleted of Ki67, PP1γ is targeted to anaphase chromosomes less efficiently. Additionally, overexpression of Ki67, but not a mutant form without the ability to bind PP1γ, induced ectopic localization of PP1γ οn metaphase chromosomes. These observations demonstrate that Ki67 is one factor that defines the cellular behavior of PP1γ in anaphase. To explore the specific roles of the subset of PP1γ recruited on chromosome via its interaction with Ki67 (PP1γ-Ki67), endogenous Ki67 was replaced with a Ki67 mutant deficient in its ability to interact with PP1γ. Although no obvious defects in the progression of mitosis were observed, the timing of dephosphorylation of the mutant Ki67 in anaphase was delayed, indicating that Ki67 itself is one of the substrates of PP1γ-Ki67.
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Affiliation(s)
- Masatoshi Takagi
- Cellular Dynamics Laboratory, RIKEN, 2-1, Hirosawa, Wako, Saitama 351-0198, Japan.
| | - Yuko Nishiyama
- Cellular Dynamics Laboratory, RIKEN, 2-1, Hirosawa, Wako, Saitama 351-0198, Japan
| | - Atsuko Taguchi
- Cellular Dynamics Laboratory, RIKEN, 2-1, Hirosawa, Wako, Saitama 351-0198, Japan
| | - Naoko Imamoto
- Cellular Dynamics Laboratory, RIKEN, 2-1, Hirosawa, Wako, Saitama 351-0198, Japan.
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29
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Booth DG, Takagi M, Sanchez-Pulido L, Petfalski E, Vargiu G, Samejima K, Imamoto N, Ponting CP, Tollervey D, Earnshaw WC, Vagnarelli P. Ki-67 is a PP1-interacting protein that organises the mitotic chromosome periphery. eLife 2014; 3:e01641. [PMID: 24867636 PMCID: PMC4032110 DOI: 10.7554/elife.01641] [Citation(s) in RCA: 127] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2013] [Accepted: 04/27/2014] [Indexed: 12/23/2022] Open
Abstract
When the nucleolus disassembles during open mitosis, many nucleolar proteins and RNAs associate with chromosomes, establishing a perichromosomal compartment coating the chromosome periphery. At present nothing is known about the function of this poorly characterised compartment. In this study, we report that the nucleolar protein Ki-67 is required for the assembly of the perichromosomal compartment in human cells. Ki-67 is a cell-cycle regulated protein phosphatase 1-binding protein that is involved in phospho-regulation of the nucleolar protein B23/nucleophosmin. Following siRNA depletion of Ki-67, NIFK, B23, nucleolin, and four novel chromosome periphery proteins all fail to associate with the periphery of human chromosomes. Correlative light and electron microscopy (CLEM) images suggest a near-complete loss of the entire perichromosomal compartment. Mitotic chromosome condensation and intrinsic structure appear normal in the absence of the perichromosomal compartment but significant differences in nucleolar reassembly and nuclear organisation are observed in post-mitotic cells.DOI: http://dx.doi.org/10.7554/eLife.01641.001.
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Affiliation(s)
- Daniel G Booth
- Wellcome Trust Centre for Cell Biology, University of Edinburgh, Edinburgh, United Kingdom
| | - Masatoshi Takagi
- Cellular Dynamics Laboratory, Riken Advanced Science Institute, Wako Saitama, Japan
| | - Luis Sanchez-Pulido
- MRC Functional Genomics Unit, Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, United Kingdom
| | - Elizabeth Petfalski
- Wellcome Trust Centre for Cell Biology, University of Edinburgh, Edinburgh, United Kingdom
| | - Giulia Vargiu
- Wellcome Trust Centre for Cell Biology, University of Edinburgh, Edinburgh, United Kingdom
| | - Kumiko Samejima
- Wellcome Trust Centre for Cell Biology, University of Edinburgh, Edinburgh, United Kingdom
| | - Naoko Imamoto
- Cellular Dynamics Laboratory, Riken Advanced Science Institute, Wako Saitama, Japan
| | - Chris P Ponting
- MRC Functional Genomics Unit, Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, United Kingdom
| | - David Tollervey
- Wellcome Trust Centre for Cell Biology, University of Edinburgh, Edinburgh, United Kingdom
| | - William C Earnshaw
- Wellcome Trust Centre for Cell Biology, University of Edinburgh, Edinburgh, United Kingdom
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Reduced growth and proliferation dynamics of nasal epithelial stem/progenitor cells in nasal polyps in vitro. Sci Rep 2014; 4:4619. [PMID: 24714674 PMCID: PMC3980221 DOI: 10.1038/srep04619] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2013] [Accepted: 03/18/2014] [Indexed: 11/30/2022] Open
Abstract
Basal cells in nasal epithelium have stemness/progenitor characters and play essential roles in the epithelial remodeling in nasal polyps (NP). We investigate whether the human nasal epithelial stem/progenitor cells (hNESPCs) from patients with NP are inherently distinct from those obtained from healthy controls. Epithelial basal cells were isolated and cultured for four passages from NP tissues and control nasal mucosa. hNESPCs from controls were stained positively with stem cell marker p63 and KRT5 and presented a consistent high Ki67 expression level over four passages. In contrast, hNESPCs from NP patients showed: i). a reduced growth and proliferation rate at each passage by evaluating colony-forming efficiency and doubling time; ii). a lower percentage of Ki67+ cells among p63+ cells in the colonies in late passages, which was also confirmed by immunostaining in the NP tissues. Thus reduced growth/proliferation dynamics in hNESPCs from NP could be an important pathological phenomenon in NP development.
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31
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Wan J, Zou S, Hu M, Zhu R, Xu J, Jiao Y, Fan S. Thoc1 inhibits cell growth via induction of cell cycle arrest and apoptosis in lung cancer cells. Mol Med Rep 2014; 9:2321-7. [PMID: 24682263 DOI: 10.3892/mmr.2014.2088] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2013] [Accepted: 02/11/2014] [Indexed: 11/06/2022] Open
Abstract
THO complex 1 (Thoc1) is a human nuclear matrix protein that binds to the retinoblastoma tumor suppressor retinoblastoma protein (pRb). While some studies suggest that Thoc1 has characteristics of a tumor suppressor protein, whether Thoc1 can inhibit lung cancer cell growth is not clear. In the present study, we observed that Thoc1 is lowly expressed in the lung cancer cell lines SPC-A1 and NCI-H1975. Then, we investigated the potential effects of Thoc1 on lung cancer cell proliferation, cell cycle and apoptosis after stable transfection of these lines with a Thoc1 expression vector. We found that overexpression of Thoc1 can inhibit cell proliferation, induce G2/M cell cycle arrest and promote apoptosis. Further investigation indicated that overexpression of Thoc1 is involved in the inhibition of cell cycle-related proteins cyclin A1 and B1 and of pro-apoptotic factors Bax and caspase-3. In vivo experiments showed that tumors overexpressing Thoc1 display a slower growth rate than the control xenografts and show reduced expression of the protein Ki-67, which localized on the nuclear membrane. Taken together, our data show that in lung cancer cells, Thoc1 inhibits cell growth through induction of cell cycle arrest and apoptosis. These results indicate that Thoc1 may be used as a novel therapeutic target for human lung cancer treatment.
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Affiliation(s)
- Jianmei Wan
- School of Radiation Medicine and Protection, Medical College, Soochow University, Suzhou, Jiangsu 215123, P.R. China
| | - Shitao Zou
- Oncology Institute, Wuxi Fourth People's Hospital, Wuxi, Jiangsu 214062, P.R. China
| | - Mengshang Hu
- Department of Nuclear Medicine, The First Affiliated Hospital, Soochow University, Suzhou, Jiangsu 215123, P.R. China
| | - Ran Zhu
- School of Radiation Medicine and Protection, Medical College, Soochow University, Suzhou, Jiangsu 215123, P.R. China
| | - Jiaying Xu
- School of Radiation Medicine and Protection, Medical College, Soochow University, Suzhou, Jiangsu 215123, P.R. China
| | - Yang Jiao
- School of Radiation Medicine and Protection, Medical College, Soochow University, Suzhou, Jiangsu 215123, P.R. China
| | - Saijun Fan
- School of Radiation Medicine and Protection, Medical College, Soochow University, Suzhou, Jiangsu 215123, P.R. China
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Ashkavandi ZJ, Najvani AD, Tadbir AA, Pardis S, Ranjbar MA, Ashraf MJ. MCM3 as a novel diagnostic marker in benign and malignant salivary gland tumors. Asian Pac J Cancer Prev 2014; 14:3479-82. [PMID: 23886132 DOI: 10.7314/apjcp.2013.14.6.3479] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Proliferation markers widely have been used to diagnose and determine the behaviour and prognosis of benign and malignant tumours. Minichromosome maintenance 3 (MCM3) is a novel proliferation marker. The aim of this study was to evaluate and compare MCM3 with Ki-67 in diagnosis of salivary gland tumours. MATERIALS AND METHODS In this retrospective study, immunohistochemical expression of MCM3 and Ki-67 was evaluated in 15 pleomorphic adenomas (PA), 17 mucoepidermoid carcinomas (MEC) and 18 adenoid cystic carcinomas (ADCC) . Labeling indices (LIs) for the two markers were calculated and compared. RESULTS MCM3 and Ki-67 LIs were significantly higher in MEC and ADCC compared to PA. The LI of MCM3 was significantly higher than that of Ki-67 in MEC and PA. There was no significant difference between the two markers in ADCC. A cut-off point of 8% with 74.3% sensitivity and 93.3% specificity for MCM3 was obtained to discern between benign and malignant tumors. CONCLUSIONS These results suggest that MCM3 might be a useful proliferation marker for differential diagnosis and recognition of clinical behavior of salivary gland tumors.
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Affiliation(s)
- Zohreh Jaafari Ashkavandi
- Department of Oral and Maxillofacial Pathology, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
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Habiba U, Kitamura T, Yanagawa-Matsuda A, Hida K, Higashino F, Ohiro Y, Totsuka Y, Shindoh M. Cytoplasmic expression of HuR may be a valuable diagnostic tool for determining the potential for malignant transformation of oral verrucous borderline lesions. Oncol Rep 2014; 31:1547-54. [PMID: 24534848 PMCID: PMC3975986 DOI: 10.3892/or.2014.3017] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2013] [Accepted: 01/20/2014] [Indexed: 01/10/2023] Open
Abstract
Oral verrucous carcinoma (OVC) is a low grade variant of oral squamous cell carcinoma, and oral verrucous hyperplasia (OVH) is a benign lesion without malignant features. However, pathologists are sometimes presented with borderline lesions and are indecisive as to diagnose them as benign or malignant. Thus, these lesions are tentatively termed oral verrucous lesions (OVLs). HuR is an ARE mRNA-binding protein, normally localized in the nucleus but cytoplasmic exportation is frequently observed in cancer cells. The present study aimed to elucidate whether expression of the HuR protein facilitates the diagnosis of true malignant lesions. Clinicopathological features were evaluated, and immunohistochemical analysis for p53, Ki67 and HuR proteins was performed in 48 cases of OVH, OVC and OVL, and the outcomes were correlated using appropriate statistical analysis. The association of these three proteins in relation to malignant transformation was analyzed after a 3-year follow-up of 25 OVL cases. The basal characteristics (age, gender and location) of all cases had no significant association with the types of lesions. Gingiva (39.4%) was the common site for all lesions. Distribution of the examined proteins had a significant association with the lesions. As compared with the OVLs, the number of immunostained-positive cells was significantly higher in the OVCs and lower in the OVH cases. During follow-up, 24% of the OVLs underwent malignant transformation for which high HuR expression and a diffuse staining pattern in the epithelium were observed. Taken together, the high degree of HuR expression with diffuse staining pattern in the epithelium may be an effective diagnostic tool that determines the potential of OVLs for malignant transformation.
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Affiliation(s)
- Umma Habiba
- Department of Oral Pathology and Biology, Hokkaido University Graduate School of Dental Medicine, Kita-ku, Sapporo 060-8586, Japan
| | - Tetsuya Kitamura
- Department of Oral Pathology and Biology, Hokkaido University Graduate School of Dental Medicine, Kita-ku, Sapporo 060-8586, Japan
| | - Aya Yanagawa-Matsuda
- Department of Oral Pathology and Biology, Hokkaido University Graduate School of Dental Medicine, Kita-ku, Sapporo 060-8586, Japan
| | - Kyoko Hida
- Department of Vascular Biology, Hokkaido University Graduate School of Dental Medicine, Kita-ku, Sapporo 060-8586, Japan
| | - Fumihiro Higashino
- Department of Oral Pathology and Biology, Hokkaido University Graduate School of Dental Medicine, Kita-ku, Sapporo 060-8586, Japan
| | - Yoichi Ohiro
- Department of Oral and Maxillofacial Surgery, Hokkaido University Graduate School of Dental Medicine, Kita-ku, Sapporo 060-8586, Japan
| | - Yasunori Totsuka
- Department of Oral and Maxillofacial Surgery, Hokkaido University Graduate School of Dental Medicine, Kita-ku, Sapporo 060-8586, Japan
| | - Masanobu Shindoh
- Department of Oral Pathology and Biology, Hokkaido University Graduate School of Dental Medicine, Kita-ku, Sapporo 060-8586, Japan
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Wilson AJ, Barham W, Saskowski J, Tikhomirov O, Chen L, Lee HJ, Yull F, Khabele D. Tracking NF-κB activity in tumor cells during ovarian cancer progression in a syngeneic mouse model. J Ovarian Res 2013; 6:63. [PMID: 24020521 PMCID: PMC3846584 DOI: 10.1186/1757-2215-6-63] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2013] [Accepted: 09/07/2013] [Indexed: 11/22/2022] Open
Abstract
Background Nuclear factor-kappa B (NF-kappaB) signaling is an important link between inflammation and peritoneal carcinomatosis in human ovarian cancer. Our objective was to track NF-kappaB signaling during ovarian cancer progression in a syngeneic mouse model using tumor cells stably expressing an NF-kappaB reporter. Methods ID8 mouse ovarian cancer cells stably expressing an NF-kappaB-dependent GFP/luciferase (NGL) fusion reporter transgene (ID8-NGL) were generated, and injected intra-peritoneally into C57BL/6 mice. NGL reporter activity in tumors was non-invasively monitored by bioluminescence imaging and measured in luciferase assays in harvested tumors. Ascites fluid or peritoneal lavages were analyzed for inflammatory cell and macrophage content, and for mRNA expression of M1 and M2 macrophage markers by quantitative real-time RT-PCR. 2-tailed Mann-Whitney tests were used for measuring differences between groups in in vivo experiments. Results In ID8-NGL cells, responsiveness of the reporter to NF-kappaB activators and inhibitors was confirmed in vitro and in vivo. ID8-NGL tumors in C57BL/6 mice bore histopathological resemblance to human high-grade serous ovarian cancer and exhibited similar peritoneal disease spread. Tumor NF-kappaB activity, measured by the NGL reporter and by western blot of nuclear p65 expression, was markedly elevated at late stages of ovarian cancer progression. In ascites fluid, macrophages were the predominant inflammatory cell population. There were elevated levels of the M2-like pro-tumor macrophage marker, mannose-receptor, during tumor progression, and reduced levels following NF-kappaB inhibition with thymoquinone. Conclusions Our ID8-NGL reporter syngeneic model is suitable for investigating changes in tumor NF-kappaB activity during ovarian cancer progression, how NF-kappaB activity influences immune cells in the tumor microenvironment, and effects of NF-kappaB-targeted treatments in future studies.
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Affiliation(s)
- Andrew J Wilson
- Department of Obstetrics and Gynecology, Division of Gynecologic Oncology, Vanderbilt University Medical Center, B1100 Medical Center North, Nashville, TN 37232, USA.
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35
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Tadbir AA, Pardis S, Ashkavandi ZJ, Najvani AD, Ashraf MJ, Taheri A, Zadeh MA, Sardari Y. Expression of Ki67 and CD105 as proliferation and angiogenesis markers in salivary gland tumors. Asian Pac J Cancer Prev 2013; 13:5155-9. [PMID: 23244127 DOI: 10.7314/apjcp.2012.13.10.5155] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
OBJECTIVE To investigate the association between CD105 and tumor cell proliferation in salivary gland tumors. METHODS In this study, 59 samples of salivary tumors from Khalili Hospital archive, including 20 cases of pleomorphic adenoma (PA), 20 cases of mucoepidermoid carcinoma (MEC) and 19 cases of adenoid cystic carcinoma, as well as 10 cases of normal salivary gland tissue, were reviewed by immunohistochemistry (IHC) for CD105 and Ki67 staining. RESULTS CD105 positive vessels were absent in normal salivary gland tissue in the vicinity of tumors (51.6% of all tumors were positive). There was a statistically significant difference in frequency of CD105 staining between PA and malignant tumors and between four groups of different lesions (p<0.000) being highest in MEC. Intratumoral microvessel density was also elevated in malignant neoplasms (2.61 ± 3.1) as compared to PA (0.46 ± 0.6). Normal salivary glands did not express Ki67. There was a statistically significant difference in frequency and percentage of Ki67 immunoreactivity in malignant neoplasms (86.5% and 10.7 ± 10.8 respectively) compared to PA (50% and 0.78 ± 0.2) and among the four groups values were highest in MEC (p<0.000). CONCLUSION n this study, it was observed a higher rate of angiogenesis and cellular proliferation was noted in malignant tumors compared to benign tumors, but no correlation was observed between these two markers.
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Affiliation(s)
- Azadeh Andisheh Tadbir
- Depatment of Oral and Maxillofacial Pathology, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.
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Hou G, Zhang S, Zhang X, Wang P, Hao X, Zhang J. Clinical pathological characteristics and prognostic analysis of 1,013 breast cancer patients with diabetes. Breast Cancer Res Treat 2013; 137:807-16. [PMID: 23292119 DOI: 10.1007/s10549-012-2404-y] [Citation(s) in RCA: 71] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2012] [Accepted: 12/27/2012] [Indexed: 01/21/2023]
Abstract
The purpose of this study was to investigate the clinical, pathological, and prognostic characteristics of breast cancer patients with diabetes. In total, the study included 1,013 breast cancer patients with diabetes and 4,621 breast cancer patients without diabetes. Patients with diabetes were further divided into the metformin- and nonmetformin-treated subgroups. The percentage of elderly patients (P < 0.001), obese patients (P < 0.001), and menopausal patients (P < 0.001) as well as the percentage of patients with cardio-cerebrovascular complications (P < 0.001), negative PR (P < 0.001) expression, or low Ki67 expression (P = 0.001) tended to be higher in the diabetic group. In addition, these patients had later pathological stages (P < 0.001), more lymph node metastasis (P = 0.014), and a lower percentage of them were on the anthracycline-based chemotherapy regimen (P = 0.003). The diabetic group was further divided into the metformin and nonmetformin-treated subgroups. The pairwise comparison between the metformin-treated subgroup and the control group did not show a significant difference in the pathological stages (P = 0.0079). However, the HER-2 positive rate tended to be lower in the metformin-treated subgroup than in the nonmetformin-treated subgroup (P = 0.002). No significant difference was found in the lymph node status between the nonmetformin-treated subgroup and the control group (P = 0.057), while the nonmetformin-treated subgroup was associated with higher HER-2 positive expression (P = 0.002). The median follow-up time for this study was 68 months (10-120 months). In Kaplan-Meier analysis, The diabetic group predicted worse survival compared with the control group (P < 0.001) with 5-year survival rates of 79 and 82 %, respectively. The breast cancer mortality rates in the metformin-treated subgroup, the nonmetformin-treated subgroup, and the control group were significantly different (long-rank test, P < 0.001), and the 5-year survival rates were 88, 73, and 82 %, respectively. As shown in the multivariate survival analysis using Cox's regression model, compared with the control group, the metformin-treated subgroup was associated with lower mortality risk (HR 0.762; 95 % CI 0.6-0.968; P = 0.026), whereas the nonmetformin-treated subgroup was associated with higher mortality risk (HR 1.708; 95 % CI 1.461-1.997; P < 0.001). In conclusion, the diabetic group is associated with poor prognosis. Compared with the control group, the metformin-treated subgroup is associated with better clinical outcomes, while nonmetformin-treated subgroup with poorer prognosis. The selection of different antidiabetic drugs may impact the prognosis of breast cancer patients with diabetes.
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Affiliation(s)
- Guofang Hou
- 3rd Department of Breast Cancer, China Tianjin Breast Cancer Prevention, Treatment and Research Center, Tianjin Medical University Cancer Institute and Hospital, West Beihuanhu Road, Tianjin, People's Republic of China
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De Wever V, Lloyd DC, Nasa I, Nimick M, Trinkle-Mulcahy L, Gourlay R, Morrice N, Moorhead GBG. Isolation of human mitotic protein phosphatase complexes: identification of a complex between protein phosphatase 1 and the RNA helicase Ddx21. PLoS One 2012; 7:e39510. [PMID: 22761809 PMCID: PMC3386289 DOI: 10.1371/journal.pone.0039510] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2011] [Accepted: 05/21/2012] [Indexed: 12/30/2022] Open
Abstract
Metazoan mitosis requires remodelling of sub-cellular structures to ensure proper division of cellular and genetic material. Faults often lead to genomic instability, cell cycle arrests and disease onset. These key structural changes are under tight spatial-temporal and post-translational control, with crucial roles for reversible protein phosphorylation. The phosphoprotein phosphatases PP1 and PP2A are paramount for the timely execution of mitotic entry and exit but their interaction partners and substrates are still largely unresolved. High throughput, mass-spectrometry based studies have limited sensitivity for the detection of low-abundance and transient complexes, a typical feature of many protein phosphatase complexes. Moreover, the limited timeframe during which mitosis takes place reduces the likelihood of identifying mitotic phosphatase complexes in asynchronous cells. Hence, numerous mitotic protein phosphatase complexes still await identification. Here we present a strategy to enrich and identify serine/threonine protein phosphatase complexes at the mitotic spindle. We thus identified a nucleolar RNA helicase, Ddx21/Gu, as a novel, direct PP1 interactor. Furthermore, our results place PP1 within the toposome, a Topoisomerase II alpha (TOPOIIα) containing complex with a key role in mitotic chromatin regulation and cell cycle progression, possibly via regulated protein phosphorylation. This study provides a strategy for the identification of further mitotic PP1 partners and the unravelling of PP1 functions during mitosis.
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Affiliation(s)
- Veerle De Wever
- Department of Biological Sciences, University of Calgary, Calgary, Alberta, Canada
| | - David C. Lloyd
- Department of Biological Sciences, University of Calgary, Calgary, Alberta, Canada
| | - Isha Nasa
- Department of Biological Sciences, University of Calgary, Calgary, Alberta, Canada
| | - Mhairi Nimick
- Department of Biological Sciences, University of Calgary, Calgary, Alberta, Canada
| | - Laura Trinkle-Mulcahy
- Department of Cellular and Molecular Medicine and Ottawa Institute of Systems Biology, University of Ottawa, Ottawa, Ontario, Canada
| | - Robert Gourlay
- Medical Research Council Protein Phosphorylation Unit, College of Life Sciences, University of Dundee, Dundee, Scotland
| | - Nick Morrice
- Medical Research Council Protein Phosphorylation Unit, College of Life Sciences, University of Dundee, Dundee, Scotland
| | - Greg B. G. Moorhead
- Department of Biological Sciences, University of Calgary, Calgary, Alberta, Canada
- * E-mail:
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Analysis of human Ki-67 gene promoter and identification of the Sp1 binding sites for Ki-67 transcription. Tumour Biol 2011; 33:257-66. [DOI: 10.1007/s13277-011-0277-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2011] [Accepted: 11/15/2011] [Indexed: 10/15/2022] Open
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Ishino H, Hara Y, Takekoshi S, Teshima T, Teramoto A, Osamura RY, Tagawa M. Ki-67 and minichromosome maintenance-7 (MCM7) expression in canine pituitary corticotroph adenomas. Domest Anim Endocrinol 2011; 41:207-13. [PMID: 21982272 DOI: 10.1016/j.domaniend.2011.07.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2011] [Revised: 07/11/2011] [Accepted: 07/24/2011] [Indexed: 11/21/2022]
Abstract
Pituitary-dependent hyperadrenocorticism (PDH) caused by pituitary corticotroph adenoma is a common endocrine disorder in dogs. The ratio between pituitary height and the area of the brain (P/B) has been used to evaluate the pituitary size. A P/B ratio > 0.31 indicates an enlarged pituitary, whereas a P/B ratio ≤ 0.31 indicates a nonenlarged pituitary. The aim of this study was to investigate the expression of proliferation markers Ki-67 and minichromosome maintenance-7 (MCM7) in canine corticotroph adenomas in enlarged and in nonenlarged pituitaries and to evaluate their relation with the size of canine pituitary corticotroph adenomas. Ki-67 and MCM7 expression in ACTH-positive tumor cells was determined by dual-labeling immunohistochemistry in resected corticotroph adenomas from 15 dogs with PDH. The mean ± SD Ki-67 labeling index (LI) was 0.55% ± 0.59% in corticotroph adenomas with nonenlarged pituitaries and 1.6% ± 0.6% in adenomas with enlarged pituitaries. The MCM7 LI in corticotroph adenomas with nonenlarged pituitaries and in adenomas with enlarged pituitaries was 2.9% ± 2.2% and 10.9% ± 3.7%, respectively. The Ki-67 LI and MCM7 LI were significantly greater in the adenomas with enlarged pituitaries than in the adenomas with nonenlarged pituitaries (P < 0.01 and P < 0.01, respectively). The MCM7 LI was significantly greater than the Ki-67 LI in adenomas (P < 0.01). The Ki-67 LI was positively correlated with the MCM7 LI (r = 0.820, P < 0.01), and the P/B ratio was positively correlated with the Ki-67 LI (r = 0.560, P = 0.03) and the MCM7 LI (r = 0.854, P < 0.01). In conclusion, canine corticotroph adenomas in enlarged pituitaries show greater proliferation potential than do adenomas in nonenlarged pituitaries. MCM7 expression was significantly greater than Ki-67 expression in canine pituitary corticotroph adenomas. Thus, MCM7 may be superior to Ki-67 as a proliferation marker in pituitary tumors.
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Affiliation(s)
- H Ishino
- Division of Veterinary Surgery, Department of Veterinary Science, Faculty of Veterinary Medicine, Nippon Veterinary and Life Science University, Musashino-shi, Tokyo, Japan.
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Huang B, Hu B, Su M, Tian D, Guo Y, Lian S, Liu Z, Wu X, Li Q, Zheng R, Gao Y. Potential role of minichromosome maintenance protein 2 as a screening biomarker in esophageal cancer high-risk population in China. Hum Pathol 2011; 42:808-16. [PMID: 21237484 DOI: 10.1016/j.humpath.2010.04.022] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2010] [Revised: 03/18/2010] [Accepted: 04/02/2010] [Indexed: 02/05/2023]
Abstract
Minichromosome maintenance proteins are novel proliferative markers that have been proposed as diagnostic markers in many cancers. We evaluated the potential role of minichromosome maintenance protein 2 as a screening biomarker and compared it with proliferating cell nuclear antigen and Ki67 in a population survey of esophageal squamous cell carcinoma. A total of 299 esophageal samples from a high-risk region in China, including 171 from an endoscopy population survey, 30 from brushing cytology, and 98 from surgery and autopsy, underwent immunostaining with minichromosome maintenance protein 2, proliferating cell nuclear antigen, and Ki67 antibodies. Minichromosome maintenance protein 2 expression was confined to the proliferative compartment of normal and abnormal esophageal epithelium and particularly manifested in the surface layer of dysplasia and carcinoma in situ. The expression of proliferating cell nuclear antigen and Ki67 was positively correlated with that of minichromosome maintenance protein 2 (r(s) >0.39, P < .01); but their positive nuclei seldom reached the surface layer, and the labeling indices were significantly lower than those for minichromosome maintenance protein 2 in dysplasia (P < .05) and carcinoma in situ (P < .001). The sensitivity and specificity of minichromosome maintenance protein 2 in diagnosing dysplasia were 91.3% and 61.8%, respectively, higher than those for proliferating cell nuclear antigen (88.4% and 47.1%) and Ki67 (78.3% and 57.8%). Nine of 10 cancer and paracancerous surface-brushing samples expressed minichromosome maintenance protein 2, and the detection was higher than that for proliferating cell nuclear antigen (8/10 and 7/10) and Ki67 (7/10 and 7/10). However, none of 10 normal surface-brushing samples expressed the 3 markers. Minichromosome maintenance protein 2 is more sensitive and specific than proliferating cell nuclear antigen and Ki67 in indicating esophageal dysplasia. Minichromosome maintenance protein 2 immunostaining combined with surface brushing could be valuable in screening patients at high risk of cancer in mass surveys.
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Affiliation(s)
- Bo Huang
- Department of Pathology & Institute for Clinical Pathology, Shantou University Medical College, Shantou 515031, Guangdong Province, China
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Nucleolar stress is an early response to myocardial damage involving nucleolar proteins nucleostemin and nucleophosmin. Proc Natl Acad Sci U S A 2011; 108:6145-50. [PMID: 21444791 DOI: 10.1073/pnas.1017935108] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Nucleolar stress, characterized by loss of nucleolar integrity, has not been described in the cardiac context. In addition to ribosome biogenesis, nucleoli are critical for control of cell proliferation and stress responses. Our group previously demonstrated induction of the nucleolar protein nucleostemin (NS) in response to cardiac pathological insult. NS interacts with nucleophosmin (NPM), a marker of nucleolar stress with cytoprotective properties. The dynamic behavior of NS and NPM reveal that nucleolar disruption is an early event associated with stress response in cardiac cells. Rapid translocation of NS and NPM to the nucleoplasm and suppression of new preribosomal RNA synthesis occurs in both neonatal rat cardiomyocytes (NRCM) and cardiac progenitor cells (CPC) upon exposure to doxorubicin or actinomycin D. Silencing of NS significantly increases cell death resulting from doxorubicin treatment in CPC, whereas NPM knockdown alone induces cell death. Overexpression of either NS or NPM significantly decreases caspase 8 activity in cultured cardiomyocytes challenged with doxorubicin. The presence of altered nucleolar structures resulting from myocardial infarction in mice supports the model of nucleolar stress as a general response to pathological injury. Collectively, these findings serve as the initial description of myocardial nucleolar stress and establish the postulate that nucleoli acts as sensors of stress, regulating the cellular response to pathological insults.
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Giaginis C, Giagini A, Tsourouflis G, Gatzidou E, Agapitos E, Kouraklis G, Theocharis S. MCM-2 and MCM-5 expression in gastric adenocarcinoma: clinical significance and comparison with Ki-67 proliferative marker. Dig Dis Sci 2011; 56:777-85. [PMID: 20694513 DOI: 10.1007/s10620-010-1348-5] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2010] [Accepted: 07/12/2010] [Indexed: 12/09/2022]
Abstract
BACKGROUND Minichromosome maintenance (MCM) proteins are essential components of DNA replication, being related to cell proliferation, and serve as useful biomarkers for cancer screening, surveillance and prognosis. The aim of the present study was to evaluate the clinical significance of MCM-2 and MCM-5 expression in gastric adenocarcinoma in comparison with Ki-67 proliferative marker. METHODS MCM-2, MCM-5 and Ki-67 expression was assessed immunohistochemically in 66 tumoral samples of gastric adenocarcinoma patients and was statistically analyzed in relation to clinicopathological characteristics and patient survival. RESULTS MCM-2 expression did not show significant associations with any clinicopathological parameters, while Ki-67 expression was merely significantly associated with tumor size (P = 0.0150). MCM-2 and Ki-67 expression were more frequently in intestinal (median values: 67.5 and 60%) compared to diffuse-type (median values: 60 and 45%) gastric adenocarcinoma cases without though reaching statistical significance (P > 0.05). MCM-5 expression was significantly associated with tumor size (P = 0.0295), presence of lymph node metastases (P = 0.0216) and tumor histopathological stage (P = 0.0098). Patients presenting high MCM-5 expression had significantly shorter survival times (log-rank test, P = 0.0042), whereas neither MCM-2 nor Ki-67 expression showed significant prognostic value (log-rank test, P = 0.9618 and P = 0.7174, respectively). In multivariate analysis, patient age, histopathological stage and grade of differentiation, but not MCM-5 expression, were identified as independent prognostic factors (Cox regression analysis, P = 0.0097, P = 0.0195, P = 0.0035 and P = 0.3245, respectively). CONCLUSIONS The present study showed that MCM-5 expression was associated with clinicopathological parameters in gastric adenocarcinoma. However, further studies highlighting the distinct impact of the two histopathological types, intestinal and diffuse, are warranted to delineate whether MCMs could be used as diagnostic and prognostic markers in gastric neoplasia.
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Affiliation(s)
- Constantinos Giaginis
- Department of Forensic Medicine and Toxicology, Medical School, University of Athens, 75 Mikras Asias Street, 11527, Athens, Greece.
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The chromosome peripheral proteins play an active role in chromosome dynamics. Biomol Concepts 2010; 1:157-64. [DOI: 10.1515/bmc.2010.018] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
AbstractThe chromosome periphery is a chromosomal structure that covers the surface of mitotic chromosomes. The structure and function of the chromosome periphery has been poorly understood since its first description in 1882. It has, however, been proposed to be an insulator or barrier to protect chromosomes from subcellular substances and to act as a carrier of nuclear and nucleolar components to direct their equal distribution to daughter cells because most chromosome peripheral proteins (CPPs) are derived from the nucleolus or nucleus. Until now, more than 30 CPPs were identified in mammalians. Recent immunostaining analyses of CPPs have revealed that the chromosome periphery covers the centromeric region of mitotic chromosomes in addition to telomeres and regions between two sister chromatids. Knockdown analyses of CPPs using RNAi have revealed functions in chromosome dynamics, including cohesion of sister chromatids, kinetochore-microtubule attachments, spindle assembly and chromosome segregation. Because most CPPs are involved in various subcellular events in the nucleolus or nuclear at interphase, a temporal and spatial-specific knockdown method of CPPs in the chromosome periphery will be useful to understand the function of chromosome periphery in cell division.
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Taneja P, Maglic D, Kai F, Zhu S, Kendig RD, Fry EA, Inoue K. Classical and Novel Prognostic Markers for Breast Cancer and their Clinical Significance. CLINICAL MEDICINE INSIGHTS-ONCOLOGY 2010; 4:15-34. [PMID: 20567632 PMCID: PMC2883240 DOI: 10.4137/cmo.s4773] [Citation(s) in RCA: 89] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The use of biomarkers ensures breast cancer patients receive optimal treatment. Established biomarkers such as estrogen receptor (ER) and progesterone receptor (PR) have been playing significant roles in the selection and management of patients for endocrine therapy. HER2 is a strong predictor of response to trastuzumab. Recently, the roles of ER as a negative and HER2 as a positive indicator for chemotherapy have been established. Ki67 has traditionally been recognized as a poor prognostic factor, but recent studies suggest that measurement of Ki67-positive cells during treatment will more effectively predict treatment efficacy for both anti-hormonal and chemotherapy. p53 mutations are found in 20–35% of human breast cancers and are associated with aggressive disease with poor clinical outcome when the DNA-binding domain is mutated. The utility of cyclin D1 as a predictor of breast cancer prognosis is controversial, but cyclin D1b overexpression is associated with poor prognosis. Likewise, overexpression of the low molecular weight form of cyclin E1 protein predicts poor prognosis. Breast cancers from BRCA1/2 carriers often show high nuclear grades, negativity to ER/PR/HER2, and p53 mutations, and thus, are associated with poor prognosis. The prognostic values of other molecular markers, such as p14ARF, TBX2/3, VEGF in breast cancer are also discussed. Careful evaluation of these biomarkers with current treatment modality is required to determine whether their measurement or monitoring offer significant clinical benefits.
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Lee YS, Ha SA, Kim HJ, Shin SM, Kim HK, Kim S, Kang CS, Lee KY, Hong OK, Lee SH, Kwon HS, Cha BY, Kim JW. Minichromosome maintenance protein 3 is a candidate proliferation marker in papillary thyroid carcinoma. Exp Mol Pathol 2009; 88:138-42. [PMID: 19818763 DOI: 10.1016/j.yexmp.2009.09.015] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2009] [Revised: 09/21/2009] [Accepted: 09/26/2009] [Indexed: 11/28/2022]
Abstract
The proliferative capacity of tumor cells is a characteristic feature in the whole growing tumors. Many pathologists and clinicians have used the estimation of cell proliferation for prognostic information. Minichromosome maintenance protein 3 (MCM3) is known to have a role on the initiation and regulation of DNA replication during cell cycle. The aim of this study was to evaluate the potential applicability of one of the MCM proteins, MCM3, as a proliferation marker in papillary thyroid carcinoma (PTC) with correlation to clinicopathological parameters. We performed the immunohistochemical analysis for MCM3 and Ki-67 in 60 cases of PTC and Western blot analysis for MCM3 expression in 6 PTCs and normal thyroid tissues. The comparison of MCM3 labeling index (LI) to tumor size (P=0.031) and extrathyroidal extension (P=0.037) was statistically significant while that of Ki-67 LI to them was not. Moreover, a significant association was not observed between MCM3 and Ki-67, but the MCM3 LI was considerably higher. Western blot analyses revealed that the MCM3 protein expression levels were overexpressed in all PTCs. On the contrary, the levels of MCM3 were very low or absent in all normal thyroid tissues. Our results indicate that MCM3 may be a more reliable proliferation marker than Ki-67 in accessing the growth of tumor and evaluating tumor aggressiveness of PTC.
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Affiliation(s)
- Youn Soo Lee
- Department of Hospital Pathology, Research Institute of Medical Science, The Catholic University of Korea, Seoul, Korea
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Santini MT, Ferrante A, Romano R, Rainaldi G, Motta A, Donelli G, Vecchia P, Indovina PL. A 700 MHz1H-NMR study reveals apoptosis-like behavior in human K562 erythroleukemic cells exposed to a 50 Hz sinusoidal magnetic field. Int J Radiat Biol 2009; 81:97-113. [PMID: 16019920 DOI: 10.1080/09553000500102985] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
PURPOSE To study cell damage and possible apoptosis in K562 human erythroleukemic cells exposed for 2 h to an extremely low frequency (ELF) 50 Hz sinusoidal magnetic field with a magnetic induction of either 1 or 5 mT using high resolution proton nuclear magnetic resonance (1H-NMR) spectroscopy. MATERIALS AND METHODS One-dimensional 1H-NMR spectra were obtained on whole K562 cells and perchloric acid extracts of these cells. In addition, two-dimensional 1H-NMR spectra were also acquired. Cell damage was examined by lactate dehydrogenase release and changes in cell growth were monitored by growth curve analyses, bromodeoxyuridine incorporation and Ki67 antigen localization. Cell death (necrosis and apoptosis) were also studied by using the chromatin dye Hoechst 33258. RESULTS The variations in numerous metabolites observed with 1H-NMR reveal apoptosis-like behavior in response of K562 cells to ELF fields. CONCLUSION 1H-NMR can be extremely useful in studying the effects of ELF fields on cells. In particular, the variations in metabolites which suggest apoptosis-like behavior occur when the cells are not identifiable as apoptotic by more traditional techniques.
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Affiliation(s)
- M T Santini
- Dipartimento di Ematologia, Oncologia e Medicina Molecolare, Istituto Superiore di Sanità, Rome, Italy.
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Giaginis C, Georgiadou M, Dimakopoulou K, Tsourouflis G, Gatzidou E, Kouraklis G, Theocharis S. Clinical significance of MCM-2 and MCM-5 expression in colon cancer: association with clinicopathological parameters and tumor proliferative capacity. Dig Dis Sci 2009; 54:282-91. [PMID: 18465232 DOI: 10.1007/s10620-008-0305-z] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2007] [Accepted: 04/10/2008] [Indexed: 12/12/2022]
Abstract
Minichromosome maintenance (MCM) proteins are essential components of DNA replication, being related to cell proliferation, and serve as useful markers for cancer screening, surveillance, and prognosis. Our aim was to examine the clinical significance of MCM-2 and MCM-5 protein expression in colon cancer and to evaluate the association with various clinicopathological characteristics and tumor proliferative capacity. Immunohistochemical expression of MCM-2 and MCM-5 was performed on paraffin-embedded malignant tissue sections obtained from 96 patients with colon cancer. MCM-2 and MCM-5 expression was correlated with different clinicopathological characteristics, proliferative capacity (Ki-67 labeling index), and p53 cell-cycle regulator expression. MCM-2 and Ki-67 expression was significantly associated with the tumors' histological grade (P = 0.003), existence of nodular metastases (N) (P = 0.003 and P = 0.030, respectively), malignancy on adenoma (P = 0.029 and P = 0.024, respectively), and vascular invasion (P = 0.010 and P = 0.011, respectively). MCM-2 expression was additionally associated with Dukes' stage (P = 0.005). Significant positive relationships were found between the expression of MCM-2 or MCM-5 proteins and that of Ki-67 protein (r = 0.963, P-value < 0.001, and r = 0.738, P-value < 0.001, respectively), as well as between MCM-2 and MCM-5 proteins (r = 0.745, P-value < 0.001). Significant positive relationships were also observed between the expression of MCM-2 or MCM-5 proteins and that of p53 protein; however, they were consistently lower than the corresponding with Ki-67 protein. No significant association was observed between MCM-5 protein expression and the clinicopathological characteristics examined. The current data suggest that MCM-2 protein expression is significantly associated with important clinicopathological characteristics for patients' management, being correlated with the cell proliferation state in colon cancer.
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Affiliation(s)
- Constantinos Giaginis
- Department of Forensic Medicine and Toxicology, Medical School, University of Athens, 75 M. Asias str, Goudi, Athens, 11527, Greece
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Schwarzkopf R, Shachar M, Dvir T, Dayan Y, Holbova R, Leor J, Cohen S. Autospecies and post-myocardial infarction sera enhance the viability, proliferation, and maturation of 3D cardiac cell culture. ACTA ACUST UNITED AC 2007; 12:3467-75. [PMID: 17518683 DOI: 10.1089/ten.2006.12.3467] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The limited ability of cardiac muscle to regenerate after an extensive myocardial infarction (MI) and the scarcity of cardiac donors have fueled the field of cardiac tissue engineering as a potential therapeutic approach to enhance cardiac function in post-MI patients. We are exploring the ex vivo bioengineering of cardiac muscle tissue by seeding isolated cardiac cells within alginate scaffolds and supplementing the culture with "smart" media. The hypothesis investigated herein is that sera derived from autospecies and from post-MI animals contain agents that might induce cell proliferation, survival, and maturation in vitro. The results of the metabolic activity of the neonatal cardiac cell constructs (6.4-51x10(6) cells/cm(3)), as measured by MTT viability assay, indicated a significant advantage (p < 0.05) to the constructs supplemented with serum from normal and post-MI adult rats compared to fetal calf serum (FCS) supplementation. H&E staining and alpha-sarcomeric actin immunofluorescence staining revealed thick viable cardiac cell clusters (150-300 microm), with abundant 3D architecture in the cardiac cell constructs supplemented with post-MI and normal adult rat serum. The number of cells positively immunostained with Ki-67, a cell proliferation marker, was significantly higher in post-MI adult rat serum-supplemented cultures compared to negative results in the FCS-supplemented culture. The results presented in this study indicate that media supplemented with post-MI adult rat serum and normal adult rat serum compared to FCS have a significant advantage in the regeneration of injured cardiac tissue.
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Affiliation(s)
- Ran Schwarzkopf
- Department of Biotechnology Engineering, Ben-Gurion University of the Negev, Beer-Sheva, Israel
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Huang HY, Huang WW, Lin CN, Eng HL, Li SH, Li CF, Lu D, Yu SC, Hsiung CY. Immunohistochemical expression of p16INK4A, Ki-67, and Mcm2 proteins in gastrointestinal stromal tumors: prognostic implications and correlations with risk stratification of NIH consensus criteria. Ann Surg Oncol 2006; 13:1633-44. [PMID: 17013685 DOI: 10.1245/s10434-006-9188-4] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2006] [Revised: 06/05/2006] [Accepted: 06/05/2006] [Indexed: 12/11/2022]
Abstract
BACKGROUND Inactivation of p16(INK4A) promotes G1/S progression of cell cycle. Minichromosome maintenance protein-2 (Mcm2), a novel cell proliferation marker, is known to better correlate with clinical outcomes than Ki-67 in many carcinomas. Since gastrointestinal stromal tumors (GISTs) sometimes remains challenging in prognostication, we analyzed the utility of these three markers in GISTs. METHODS Immunohistochemistry was performed in tissue microarrays of 277 primary GISTs and correlated with NIH consensus criteria and clinical outcomes. RESULTS The increment of NIH risk levels significantly correlated with increasing labeling indices (LI) of both Ki-67 (P <.001) and Mcm2 (P <.001) and loss of p16(INK4A) expression (P <.035). However, the latter aberration did occur in 23% of very low/low-risk GISTs. The relationship between Mcm2 and Ki-67 LIs could be modeled as linear (P <.001, r = 0.697), while Mcm2 LI was considerably higher (P <.001) with a stepwise escalation related to risk levels. Ki-67 LI >5% (P <.0001) and Mcm2 LI >10% (P <.0001) were strongly predictive of inferior disease-specific survival (DSS), while aberrant loss of p16(INK4A) only reached a trend (P = .0954). In multivariate analyses, independent adverse factors of DSS were high-risk category (RR = 16.93, P <.0001), metastatic disease (RR = 4.12, P = .0015), Ki-67 LI >5% (RR = 3.55, P = .001), and presence of epithelioid histology (RR = 2.17, P = .0308). CONCLUSIONS Prognostic efficacy of NIH consensus criteria is substantiated. P16(INK4A) deregulation can occur early in GIST tumorigenesis and marginally correlates with patient survival. Despite Ki-67 LI being an independent prognosticator, simultaneous detection of Mcm2 is recommended as a prognostic adjunct of GISTs, given its better sensitivity and stepwise escalation with increasing risk levels.
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Affiliation(s)
- Hsuan-Ying Huang
- Department of Pathology, Chang Gung Memorial Hospital-Kaohsiung Medical Center, Chang Gung University College of Medicine, Kaohsiung, Taiwan
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Yang J, Ramnath N, Moysich KB, Asch HL, Swede H, Alrawi SJ, Huberman J, Geradts J, Brooks JSJ, Tan D. Prognostic significance of MCM2, Ki-67 and gelsolin in non-small cell lung cancer. BMC Cancer 2006; 6:203. [PMID: 16882345 PMCID: PMC1555597 DOI: 10.1186/1471-2407-6-203] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2006] [Accepted: 08/01/2006] [Indexed: 11/23/2022] Open
Abstract
Background Uncontrolled proliferation and increased motility are hallmarks of neoplastic cells, therefore markers of proliferation and motility may be valuable in assessing tumor progression and prognosis. MCM2 is a member of the minichromosome maintenance (MCM) protein family. It plays critical roles in the initiation of DNA replication and in replication fork movement, and is intimately related to cell proliferation. Ki-67 is a proliferation antigen that is expressed during all but G0 phases of the cell cycle. Gelsolin is an actin-binding protein that regulates the integrity of the actin cytoskeletal structure and facilitates cell motility. In this study, we assessed the prognostic significance of MCM2 and Ki-67, two markers of proliferation, and gelsolin, a marker of motility, in non-small cell lung cancer (NSCLC). Methods 128 patients with pathologically confirmed, resectable NSCLC (stage I-IIIA) were included. Immunohistochemistry was utilized to measure the expressions of these markers in formalin-fixed, paraffin-embedded tumor tissues. Staining and scoring of MCM2, Ki-67 and gelsolin was independently performed. Analyses were performed to evaluate the prognostic significance of single expression of each marker, as well as the prognostic significance of composite expressions of MCM2 and gelsolin. Cox regression and Kaplan-Meier survival analysis were used for statistical analysis. Results Of the three markers, higher levels of gelsolin were significantly associated with an increased risk of death (adjusted RR = 1.89, 95% CI = 1.17–3.05, p = 0.01), and higher levels of MCM2 were associated with a non-significant increased risk of death (adjusted RR = 1.36, 95% CI = 0.84–2.20, p = 0.22). Combined, adjusted analyses revealed a significantly poor prognostic effect for higher expression of MCM2 and gelsolin compared to low expression of both biomarkers (RR = 2.32, 95% CI = 1.21–4.45, p = 0.01). Ki-67 did not display apparent prognostic effect in this study sample. Conclusion The results suggest that higher tumor proliferation and motility may be important in the prognosis of NSCLC, and composite application of biomarkers might be of greater value than single marker application in assessing tumor prognosis.
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Affiliation(s)
- Jun Yang
- Roswell Park Cancer Institute, Buffalo, NY 14263, USA
| | | | | | - Harold L Asch
- Roswell Park Cancer Institute, Buffalo, NY 14263, USA
| | - Helen Swede
- Connecticut Tumor Registry, Department of Public Health, Hartford, CT 06134, USA
| | | | - Joel Huberman
- Roswell Park Cancer Institute, Buffalo, NY 14263, USA
| | - Joseph Geradts
- Department of Pathology, Duke University, Durham, NC 27710, USA
| | - John SJ Brooks
- Dept. of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Dongfeng Tan
- Dept. of Pathology and Lab Medicine, University of Texas Health Science Center, Houston, TX 77030, USA
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