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Vajda F, Szepesi Á, Erdei Z, Szabó E, Várady G, Kiss D, Héja L, Német K, Szakács G, Füredi A. Mesenchymal Stem Cells Increase Drug Tolerance of A431 Cells Only in 3D Spheroids, Not in 2D Co-Cultures. Int J Mol Sci 2024; 25:4515. [PMID: 38674102 PMCID: PMC11049889 DOI: 10.3390/ijms25084515] [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: 02/17/2024] [Revised: 04/13/2024] [Accepted: 04/16/2024] [Indexed: 04/28/2024] Open
Abstract
Mesenchymal stem cells (MSCs) are an integral part of the tumor microenvironment (TME); however, their role is somewhat controversial: conflicting reports suggest that, depending on the stage of tumor development, MSCs can either support or suppress tumor growth and spread. Additionally, the influence of MSCs on drug resistance is also ambiguous. Previously, we showed that, despite MSCs proliferating significantly more slowly than cancer cells, there are chemotherapeutic drugs which proved to be similarly toxic to both cell types. Here we established 2D co-cultures and 3D co-culture spheroids from different ratios of GFP-expressing, adipose tissue-derived MSCs and A431 epidermoid carcinoma cells tagged with mCherry to investigate the effect of MSCs on cancer cell growth, survival, and drug sensitivity. We examined the cytokine secretion profile of mono- and co-cultures, explored the inner structure of the spheroids, applied MSC-(nutlin-3) and cancer cell-targeting (cisplatin) treatments separately, monitored the response with live-cell imaging and identified a new, double-fluorescent cell type emerging from these cultures. In 2D co-cultures, no effect on proliferation or drug sensitivity was observed, regardless of the changes in cytokine secretion induced by the co-culture. Conversely, 3D spheroids developed a unique internal structure consisting of MSCs, which significantly improved cancer cell survival and resilience to treatment, suggesting that physical proximity and cell-cell connections are required for MSCs to considerably affect nearby cancer cells. Our results shed light on MSC-cancer cell interactions and could help design new, better treatment options for tumors.
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Affiliation(s)
- Flóra Vajda
- Institute of Molecular Life Sciences, HUN-REN Research Centre for Natural Sciences, 1117 Budapest, Hungary
- Doctoral School, Semmelweis University, 1085 Budapest, Hungary
| | | | | | - Edit Szabó
- Institute of Molecular Life Sciences, HUN-REN Research Centre for Natural Sciences, 1117 Budapest, Hungary
| | - György Várady
- Institute of Molecular Life Sciences, HUN-REN Research Centre for Natural Sciences, 1117 Budapest, Hungary
| | - Dániel Kiss
- John von Neumann Faculty of Informatics, Óbuda University, 1034 Budapest, Hungary
| | - László Héja
- Institute of Organic Chemistry, HUN-REN Research Centre for Natural Sciences, 1117 Budapest, Hungary
| | | | - Gergely Szakács
- Institute of Molecular Life Sciences, HUN-REN Research Centre for Natural Sciences, 1117 Budapest, Hungary
- National Laboratory for Drug Research and Development, 1117 Budapest, Hungary
- Center for Cancer Research, Medical University of Vienna, 1090 Wien, Austria
| | - András Füredi
- Institute of Molecular Life Sciences, HUN-REN Research Centre for Natural Sciences, 1117 Budapest, Hungary
- Institute of Technical Physics and Materials Science, HUN-REN Centre for Energy Research, 1121 Budapest, Hungary
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2
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Shi Y, Yang X, Min J, Kong W, Hu X, Zhang J, Chen L. Advancements in culture technology of adipose-derived stromal/stem cells: implications for diabetes and its complications. Front Endocrinol (Lausanne) 2024; 15:1343255. [PMID: 38681772 PMCID: PMC11045945 DOI: 10.3389/fendo.2024.1343255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Accepted: 03/29/2024] [Indexed: 05/01/2024] Open
Abstract
Stem cell-based therapies exhibit considerable promise in the treatment of diabetes and its complications. Extensive research has been dedicated to elucidate the characteristics and potential applications of adipose-derived stromal/stem cells (ASCs). Three-dimensional (3D) culture, characterized by rapid advancements, holds promise for efficacious treatment of diabetes and its complications. Notably, 3D cultured ASCs manifest enhanced cellular properties and functions compared to traditional monolayer-culture. In this review, the factors influencing the biological functions of ASCs during culture are summarized. Additionally, the effects of 3D cultured techniques on cellular properties compared to two-dimensional culture is described. Furthermore, the therapeutic potential of 3D cultured ASCs in diabetes and its complications are discussed to provide insights for future research.
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Affiliation(s)
- Yinze Shi
- Department of Endocrinology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Provincial Clinical Research Center for Diabetes and Metabolic Disorders, Wuhan, China
| | - Xueyang Yang
- Department of Endocrinology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Provincial Clinical Research Center for Diabetes and Metabolic Disorders, Wuhan, China
| | - Jie Min
- Department of Endocrinology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Provincial Clinical Research Center for Diabetes and Metabolic Disorders, Wuhan, China
| | - Wen Kong
- Department of Endocrinology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Provincial Clinical Research Center for Diabetes and Metabolic Disorders, Wuhan, China
| | - Xiang Hu
- Department of Endocrinology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Provincial Clinical Research Center for Diabetes and Metabolic Disorders, Wuhan, China
| | - Jiaoyue Zhang
- Department of Endocrinology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Provincial Clinical Research Center for Diabetes and Metabolic Disorders, Wuhan, China
| | - Lulu Chen
- Department of Endocrinology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Provincial Clinical Research Center for Diabetes and Metabolic Disorders, Wuhan, China
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3
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Ichise T, Ichise H, Shimizu Y. Development of a Mouse Experimental System for the In Vivo Characterization of Bioengineered Adipose-Derived Stromal Cells. Cells 2024; 13:582. [PMID: 38607021 PMCID: PMC11011746 DOI: 10.3390/cells13070582] [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: 02/29/2024] [Revised: 03/23/2024] [Accepted: 03/26/2024] [Indexed: 04/13/2024] Open
Abstract
Human adipose-derived stromal cells (ADSCs) are an important resource for cell-based therapies. However, the dynamics of ADSCs after transplantation and their mechanisms of action in recipients remain unclear. Herein, we generated genetically engineered mouse ADSCs to clarify their biodistribution and post-transplantation status and to analyze their role in recipient mesenchymal tissue modeling. Immortalized ADSCs (iADSCs) retained ADSC characteristics such as stromal marker gene expression and differentiation potential. iADSCs expressing a fluorescent reporter gene were seeded into biocompatible nonwoven fabric sheets and transplanted into the dorsal subcutaneous region of neonatal mice. Transplanted donor ADSCs were distributed as CD90-positive stromal cells on the sheets and survived 1 month after transplantation. Although accumulation of T lymphocytes or macrophages inside the sheet was not observed with or without donor cells, earlier migration and accumulation of recipient blood vascular endothelial cells (ECs) inside the sheet was observed in the presence of donor cells. Thus, our mouse model can help in studying the interplay between donor ADSCs and recipient cells over a 1-month period. This system may be of value for assessing and screening bioengineered ADSCs in vivo for optimal cell-based therapies.
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Affiliation(s)
- Taeko Ichise
- Department of Plastic and Reconstructive Surgery, University of the Ryukyus Hospital, 207 Uehara, Nishihara 903-0215, Japan
| | - Hirotake Ichise
- Institute for Animal Research, Faculty of Medicine, University of the Ryukyus, 207 Uehara, Nishihara 903-0215, Japan
| | - Yusuke Shimizu
- Department of Plastic and Reconstructive Surgery, University of the Ryukyus Hospital, 207 Uehara, Nishihara 903-0215, Japan
- Department of Plastic and Reconstructive Surgery, Graduate School of Medicine, University of the Ryukyus, 207 Uehara, Nishihara 903-0215, Japan
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4
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Lenz LS, Wink MR. The other side of the coin: mesenchymal stromal cell immortalization beyond evasion of senescence. Hum Cell 2023; 36:1593-1603. [PMID: 37341871 DOI: 10.1007/s13577-023-00925-3] [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: 02/04/2023] [Accepted: 05/23/2023] [Indexed: 06/22/2023]
Abstract
Mesenchymal stromal cells (MSC) are promising options to cellular therapy to several clinical disorders, mainly because of its ability to immunomodulate and differentiate into different cell types. Even though MSC can be isolated from different sources, a major challenge to understanding the biological effects is that the primary cells undergo replicative senescence after a limited number of cell divisions in culture, requiring time-consuming and technically challenging approaches to get a sufficient cell number for clinical applications. Therefore, a new isolation, characterization, and expansion is necessary every time, which increases the variability and is time-consuming. Immortalization is a strategy that can overcome these challenges. Therefore, here, we review the different methodologies available to cellular immortalization, and discuss the literature regarding MSC immortalization and the broader biological consequences that extend beyond the mere increase in proliferation potential.
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Affiliation(s)
- Luana Suéling Lenz
- Laboratório de Biologia Celular, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, 90050-170, Brazil
| | - Márcia Rosângela Wink
- Laboratório de Biologia Celular, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, 90050-170, Brazil.
- Departamento de Ciências Básicas da Saúde (DCBS), Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, 90050-170, Brazil.
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5
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McAllan L, Baranasic D, Villicaña S, Brown S, Zhang W, Lehne B, Adamo M, Jenkinson A, Elkalaawy M, Mohammadi B, Hashemi M, Fernandes N, Lambie N, Williams R, Christiansen C, Yang Y, Zudina L, Lagou V, Tan S, Castillo-Fernandez J, King JWD, Soong R, Elliott P, Scott J, Prokopenko I, Cebola I, Loh M, Lenhard B, Batterham RL, Bell JT, Chambers JC, Kooner JS, Scott WR. Integrative genomic analyses in adipocytes implicate DNA methylation in human obesity and diabetes. Nat Commun 2023; 14:2784. [PMID: 37188674 PMCID: PMC10185556 DOI: 10.1038/s41467-023-38439-z] [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: 10/13/2021] [Accepted: 05/03/2023] [Indexed: 05/17/2023] Open
Abstract
DNA methylation variations are prevalent in human obesity but evidence of a causative role in disease pathogenesis is limited. Here, we combine epigenome-wide association and integrative genomics to investigate the impact of adipocyte DNA methylation variations in human obesity. We discover extensive DNA methylation changes that are robustly associated with obesity (N = 190 samples, 691 loci in subcutaneous and 173 loci in visceral adipocytes, P < 1 × 10-7). We connect obesity-associated methylation variations to transcriptomic changes at >500 target genes, and identify putative methylation-transcription factor interactions. Through Mendelian Randomisation, we infer causal effects of methylation on obesity and obesity-induced metabolic disturbances at 59 independent loci. Targeted methylation sequencing, CRISPR-activation and gene silencing in adipocytes, further identifies regional methylation variations, underlying regulatory elements and novel cellular metabolic effects. Our results indicate DNA methylation is an important determinant of human obesity and its metabolic complications, and reveal mechanisms through which altered methylation may impact adipocyte functions.
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Affiliation(s)
- Liam McAllan
- Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, London, W12 0NN, UK
- MRC London Institute of Medical Sciences, London, W12 0NN, UK
| | - Damir Baranasic
- Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, London, W12 0NN, UK
- MRC London Institute of Medical Sciences, London, W12 0NN, UK
| | - Sergio Villicaña
- Department of Twin Research and Genetic Epidemiology, King's College London, London, UK
| | - Scarlett Brown
- Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, London, W12 0NN, UK
- MRC London Institute of Medical Sciences, London, W12 0NN, UK
| | - Weihua Zhang
- Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, London, W2 1PG, UK
- Department of Cardiology, Ealing Hospital, London North West University Healthcare NHS Trust, Middlesex, UB1 3HW, UK
| | - Benjamin Lehne
- Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, London, W2 1PG, UK
| | - Marco Adamo
- UCLH Bariatric Centre for Weight Loss, Weight Management and Metabolic and Endocrine Surgery, University College London Hospitals, Ground Floor West Wing, 250 Euston Road, London, NW1 2PG, UK
| | - Andrew Jenkinson
- UCLH Bariatric Centre for Weight Loss, Weight Management and Metabolic and Endocrine Surgery, University College London Hospitals, Ground Floor West Wing, 250 Euston Road, London, NW1 2PG, UK
| | - Mohamed Elkalaawy
- UCLH Bariatric Centre for Weight Loss, Weight Management and Metabolic and Endocrine Surgery, University College London Hospitals, Ground Floor West Wing, 250 Euston Road, London, NW1 2PG, UK
| | - Borzoueh Mohammadi
- UCLH Bariatric Centre for Weight Loss, Weight Management and Metabolic and Endocrine Surgery, University College London Hospitals, Ground Floor West Wing, 250 Euston Road, London, NW1 2PG, UK
| | - Majid Hashemi
- UCLH Bariatric Centre for Weight Loss, Weight Management and Metabolic and Endocrine Surgery, University College London Hospitals, Ground Floor West Wing, 250 Euston Road, London, NW1 2PG, UK
| | - Nadia Fernandes
- Imperial BRC Genomics Facility, Faculty of Medicine, Imperial College London, London, W12 0NN, UK
| | - Nathalie Lambie
- Imperial BRC Genomics Facility, Faculty of Medicine, Imperial College London, London, W12 0NN, UK
| | - Richard Williams
- Imperial BRC Genomics Facility, Faculty of Medicine, Imperial College London, London, W12 0NN, UK
| | - Colette Christiansen
- Department of Twin Research and Genetic Epidemiology, King's College London, London, UK
- School of Mathematics and Statistics, Faculty of Science, Technology, Engineering and Mathematics, The Open University, Milton Keynes, UK
| | - Youwen Yang
- Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, London, W2 1PG, UK
- School of Cardiovascular and Metabolic Medicine and Sciences, James Black Centre, King's College London British Heart Foundation Centre of Excellence, 125 Coldharbour Lane, London, SE5 9NU, UK
| | - Liudmila Zudina
- Department of Clinical & Experimental Medicine, University of Surrey, Guildford, UK
| | - Vasiliki Lagou
- Department of Microbiology and Immunology, Laboratory of Adaptive Immunity, KU Leuven, Leuven, Belgium
- VIB-KU Leuven Center for Brain and Disease Research, Leuven, Belgium
| | - Sili Tan
- Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
| | | | - James W D King
- MRC London Institute of Medical Sciences, London, W12 0NN, UK
| | - Richie Soong
- Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
- Department of Pathology, National University Hospital, Singapore, Singapore
| | - Paul Elliott
- Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, London, W2 1PG, UK
- MRC Centre for Environment and Health, School of Public Health, Imperial College London, London, UK
- National Institute for Health Research Biomedical Research Centre, Imperial College London, London, UK
| | - James Scott
- National Heart and Lung Institute, Imperial College London, London, W12 0NN, UK
- Imperial College Healthcare NHS Trust, London, W12 0HS, UK
| | - Inga Prokopenko
- Department of Clinical & Experimental Medicine, University of Surrey, Guildford, UK
- People-Centred Artificial Intelligence Institute, University of Surrey, Guildford, UK
- Institute of Biochemistry and Genetics, Ufa Federal Research Centre Russian Academy of Sciences, Ufa, Russian Federation
| | - Inês Cebola
- Section of Genetics and Genomics, Department of Metabolism, Digestion and Reproduction, Imperial College London, London, UK
| | - Marie Loh
- Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, London, W2 1PG, UK
- Translational Laboratory in Genetic Medicine (TLGM), Agency for Science, Technology and Research (A*STAR), 8A Biomedical Grove, Immunos, Level 5, Singapore, 138648, Singapore
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, Singapore
| | - Boris Lenhard
- Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, London, W12 0NN, UK
- MRC London Institute of Medical Sciences, London, W12 0NN, UK
| | - Rachel L Batterham
- UCLH Bariatric Centre for Weight Loss, Weight Management and Metabolic and Endocrine Surgery, University College London Hospitals, Ground Floor West Wing, 250 Euston Road, London, NW1 2PG, UK
- Centre for Obesity Research, Rayne Institute, Department of Medicine, University College, London, WC1E 6JJ, UK
- National Institute of Health Research University College London Hospitals Biomedical Research Centre, London, W1T 7DN, UK
| | - Jordana T Bell
- Department of Twin Research and Genetic Epidemiology, King's College London, London, UK
| | - John C Chambers
- Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, London, W2 1PG, UK
- Department of Cardiology, Ealing Hospital, London North West University Healthcare NHS Trust, Middlesex, UB1 3HW, UK
- MRC Centre for Environment and Health, School of Public Health, Imperial College London, London, UK
- Imperial College Healthcare NHS Trust, London, W12 0HS, UK
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, Singapore
| | - Jaspal S Kooner
- Department of Cardiology, Ealing Hospital, London North West University Healthcare NHS Trust, Middlesex, UB1 3HW, UK
- MRC Centre for Environment and Health, School of Public Health, Imperial College London, London, UK
- National Heart and Lung Institute, Imperial College London, London, W12 0NN, UK
- Imperial College Healthcare NHS Trust, London, W12 0HS, UK
| | - William R Scott
- Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, London, W12 0NN, UK.
- MRC London Institute of Medical Sciences, London, W12 0NN, UK.
- Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, London, W2 1PG, UK.
- Imperial College Healthcare NHS Trust, London, W12 0HS, UK.
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Sutyagina OI, Beilin AK, Vorotelyak EA, Vasiliev AV. Immortalization Reversibility in the Context of Cell Therapy Biosafety. Int J Mol Sci 2023; 24:7738. [PMID: 37175444 PMCID: PMC10178325 DOI: 10.3390/ijms24097738] [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: 03/09/2023] [Revised: 04/18/2023] [Accepted: 04/20/2023] [Indexed: 05/15/2023] Open
Abstract
Immortalization (genetically induced prevention of replicative senescence) is a promising approach to obtain cellular material for cell therapy or for bio-artificial organs aimed at overcoming the problem of donor material shortage. Immortalization is reversed before cells are used in vivo to allow cell differentiation into the mature phenotype and avoid tumorigenic effects of unlimited cell proliferation. However, there is no certainty that the process of de-immortalization is 100% effective and that it does not cause unwanted changes in the cell. In this review, we discuss various approaches to reversible immortalization, emphasizing their advantages and disadvantages in terms of biosafety. We describe the most promising approaches in improving the biosafety of reversibly immortalized cells: CRISPR/Cas9-mediated immortogene insertion, tamoxifen-mediated self-recombination, tools for selection of successfully immortalized cells, using a decellularized extracellular matrix, and ensuring post-transplant safety with the use of suicide genes. The last process may be used as an add-on for previously existing reversible immortalized cell lines.
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Affiliation(s)
- Oksana I. Sutyagina
- N.K. Koltzov Institute of Developmental Biology of Russian Academy of Sciences, Laboratory of Cell Biology, Vavilov Str. 26, 119334 Moscow, Russia
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Yasumura Y, Teshima T, Nagashima T, Takano T, Michishita M, Taira Y, Suzuki R, Matsumoto H. Immortalized Canine Adipose-Derived Mesenchymal Stem Cells as a Novel Candidate Cell Source for Mesenchymal Stem Cell Therapy. Int J Mol Sci 2023; 24:ijms24032250. [PMID: 36768587 PMCID: PMC9917102 DOI: 10.3390/ijms24032250] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 01/19/2023] [Accepted: 01/21/2023] [Indexed: 01/26/2023] Open
Abstract
Mesenchymal stem cells are expected to be a cell source for stem cell therapy of various diseases in veterinary medicine. However, donor-dependent cell heterogenicity has been a cause of inconsistent therapeutic efficiency. Therefore, we established immortalized cells from canine adipose tissue-derived mesenchymal stem cells (ADSCs) to minimize cellular heterogeneity by reducing the number of donors, evaluated their properties, and compared them to the primary cells with RNA-sequencing. Immortalized canine ADSCs were established by transduction with combinations of the R24C mutation of human cyclin-dependent kinase 4 (CDKR24C), canine cyclin D1, and canine TERT. The ADSCs transduced with CDK4R24C, cyclin D1, and TERT (ADSC-K4DT) or with CDK4R24C and cyclin D1 (ADSC-K4D) showed a dramatic increase in proliferation (population doubling level >100) without cellular senescence compared to the primary ADSCs. The cell surface markers, except for CD90 of the ADSC-K4DT and ADSC-K4D cells, were similar to those of the primary ADSCs. The ADSC-K4DT and ADSC-K4D cells maintained their trilineage differentiation capacity and chromosome condition, and did not have a tumorigenic development. The ability to inhibit lymphocyte proliferation by the ADSC-K4D cells was enhanced compared with the primary ADSCs and ADSC-K4DT cells. The pathway analysis based on RNA-sequencing revealed changes in the pathways mainly related to the cell cycle and telomerase. The ADSC-K4DT and ADSC-K4D cells had decreased CD90 expression, but there were no obvious defects associated with the decreased CD90 expression in this study. Our results suggest that ADSC-K4DT and ADSC-K4D cells are a potential novel cell source for mesenchymal stem cell therapy.
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Affiliation(s)
- Yuyo Yasumura
- Laboratory of Veterinary Internal Medicine, Department of Veterinary Clinical Medicine, School of Veterinary Medicine, Faculty of Veterinary Science, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino, Tokyo 180-8602, Japan
| | - Takahiro Teshima
- Laboratory of Veterinary Internal Medicine, Department of Veterinary Clinical Medicine, School of Veterinary Medicine, Faculty of Veterinary Science, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino, Tokyo 180-8602, Japan
- Research Center for Animal Life Science, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino, Tokyo 180-8602, Japan
- Correspondence: ; Tel.: +81-422-31-4151 (ext. 3434)
| | - Tomokazu Nagashima
- Laboratory of Veterinary Pathology, Department of Veterinary Clinical Medicine, School of Veterinary Medicine, Faculty of Veterinary Science, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino, Tokyo 180-8602, Japan
| | - Takashi Takano
- Laboratory of Veterinary Public Health, Department of Veterinary Clinical Medicine, School of Veterinary Medicine, Faculty of Veterinary Science, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino, Tokyo 180-8602, Japan
| | - Masaki Michishita
- Research Center for Animal Life Science, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino, Tokyo 180-8602, Japan
- Laboratory of Veterinary Pathology, Department of Veterinary Clinical Medicine, School of Veterinary Medicine, Faculty of Veterinary Science, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino, Tokyo 180-8602, Japan
| | - Yoshiaki Taira
- Laboratory of Veterinary Internal Medicine, Department of Veterinary Clinical Medicine, School of Veterinary Medicine, Faculty of Veterinary Science, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino, Tokyo 180-8602, Japan
| | - Ryohei Suzuki
- Laboratory of Veterinary Internal Medicine, Department of Veterinary Clinical Medicine, School of Veterinary Medicine, Faculty of Veterinary Science, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino, Tokyo 180-8602, Japan
| | - Hirotaka Matsumoto
- Laboratory of Veterinary Internal Medicine, Department of Veterinary Clinical Medicine, School of Veterinary Medicine, Faculty of Veterinary Science, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino, Tokyo 180-8602, Japan
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Katahira Y, Murakami F, Inoue S, Miyakawa S, Sakamoto E, Furusaka Y, Watanabe A, Sekine A, Kuroda M, Hasegawa H, Mizoguchi I, Yoshimoto T. Protective effects of conditioned media of immortalized stem cells from human exfoliated deciduous teeth on pressure ulcer formation. Front Immunol 2023; 13:1010700. [PMID: 36713359 PMCID: PMC9881429 DOI: 10.3389/fimmu.2022.1010700] [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: 08/03/2022] [Accepted: 12/23/2022] [Indexed: 01/14/2023] Open
Abstract
Pressure ulcers (PUs) are increasing with aging worldwide, but there is no effective causal therapy. Although mesenchymal stem cells (MSCs) promote cutaneous wound healing, the effects of the conditioned medium (CM) of MSCs on cutaneous PU formation induced by ischemia-reperfusion injury have been poorly investigated. To address this issue, herein, we first established an immortalized stem cell line from human exfoliated deciduous teeth (SHED). This cell line was revealed to have superior characteristics in that it grows infinitely and vigorously, and stably and consistently secretes a variety of cytokines. Using the CM obtained from the immortalized SHED cell line, we investigated the therapeutic potential on a cutaneous ischemia-reperfusion mouse model for PU formation using two magnetic plates. This is the first study to show that CM from immortalized SHEDs exerts therapeutic effects on PU formation by promoting angiogenesis and oxidative stress resistance through vascular endothelial growth factor and hepatocyte growth factor. Thus, the CM of MSCs has potent therapeutic effects, whereas these therapies have not been implemented in human medicine. To try to meet the regulatory requirements for manufacturing and quality control as much as possible, it is necessary to produce CM that is consistently safe and effective. The immortalization of stem cells could be one of the breakthroughs to meet the regulatory requirements and consequently open up a novel avenue to create a novel type of cell-free regenerative medicine, although further investigation into the quality control is warranted.
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Affiliation(s)
- Yasuhiro Katahira
- Department of Immunoregulation, Institute of Medical Science, Tokyo Medical University, Tokyo, Japan
| | - Fumihiro Murakami
- Department of Immunoregulation, Institute of Medical Science, Tokyo Medical University, Tokyo, Japan
| | - Shinya Inoue
- Department of Immunoregulation, Institute of Medical Science, Tokyo Medical University, Tokyo, Japan
| | - Satomi Miyakawa
- Department of Immunoregulation, Institute of Medical Science, Tokyo Medical University, Tokyo, Japan
| | - Eri Sakamoto
- Department of Immunoregulation, Institute of Medical Science, Tokyo Medical University, Tokyo, Japan
| | - Yuma Furusaka
- Department of Immunoregulation, Institute of Medical Science, Tokyo Medical University, Tokyo, Japan
| | - Aruma Watanabe
- Department of Immunoregulation, Institute of Medical Science, Tokyo Medical University, Tokyo, Japan
| | - Ami Sekine
- Department of Immunoregulation, Institute of Medical Science, Tokyo Medical University, Tokyo, Japan
| | - Masahiko Kuroda
- Department of Molecular Pathology, Tokyo Medical University, Tokyo, Japan
| | - Hideaki Hasegawa
- Department of Immunoregulation, Institute of Medical Science, Tokyo Medical University, Tokyo, Japan
| | - Izuru Mizoguchi
- Department of Immunoregulation, Institute of Medical Science, Tokyo Medical University, Tokyo, Japan
| | - Takayuki Yoshimoto
- Department of Immunoregulation, Institute of Medical Science, Tokyo Medical University, Tokyo, Japan,*Correspondence: Takayuki Yoshimoto,
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9
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Luconi M, Sogorb MA, Markert UR, Benfenati E, May T, Wolbank S, Roncaglioni A, Schmidt A, Straccia M, Tait S. Human-Based New Approach Methodologies in Developmental Toxicity Testing: A Step Ahead from the State of the Art with a Feto-Placental Organ-on-Chip Platform. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:15828. [PMID: 36497907 PMCID: PMC9737555 DOI: 10.3390/ijerph192315828] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 11/20/2022] [Accepted: 11/25/2022] [Indexed: 06/17/2023]
Abstract
Developmental toxicity testing urgently requires the implementation of human-relevant new approach methodologies (NAMs) that better recapitulate the peculiar nature of human physiology during pregnancy, especially the placenta and the maternal/fetal interface, which represent a key stage for human lifelong health. Fit-for-purpose NAMs for the placental-fetal interface are desirable to improve the biological knowledge of environmental exposure at the molecular level and to reduce the high cost, time and ethical impact of animal studies. This article reviews the state of the art on the available in vitro (placental, fetal and amniotic cell-based systems) and in silico NAMs of human relevance for developmental toxicity testing purposes; in addition, we considered available Adverse Outcome Pathways related to developmental toxicity. The OECD TG 414 for the identification and assessment of deleterious effects of prenatal exposure to chemicals on developing organisms will be discussed to delineate the regulatory context and to better debate what is missing and needed in the context of the Developmental Origins of Health and Disease hypothesis to significantly improve this sector. Starting from this analysis, the development of a novel human feto-placental organ-on-chip platform will be introduced as an innovative future alternative tool for developmental toxicity testing, considering possible implementation and validation strategies to overcome the limitation of the current animal studies and NAMs available in regulatory toxicology and in the biomedical field.
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Affiliation(s)
- Michaela Luconi
- Department of Experimental and Clinical Biomedical Sciences “Mario Serio”, University of Florence, Viale Pieraccini 6, 50139 Florence, Italy
- I.N.B.B. (Istituto Nazionale Biostrutture e Biosistemi), Viale Medaglie d’Oro 305, 00136 Rome, Italy
| | - Miguel A. Sogorb
- Instituto de Bioingeniería, Universidad Miguel Hernández de Elche, Avenida de la Universidad s/n, 03202 Elche, Spain
| | - Udo R. Markert
- Placenta Lab, Department of Obstetrics, University Hospital Jena, Am Klinikum 1, 07747 Jena, Germany
| | - Emilio Benfenati
- Department of Environmental Health Sciences, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Via Mario Negri 2, 20156 Milan, Italy
| | - Tobias May
- InSCREENeX GmbH, Inhoffenstr. 7, 38124 Braunschweig, Germany
| | - Susanne Wolbank
- Ludwig Boltzmann Institut for Traumatology, The Research Center in Cooperation with AUVA, Austrian Cluster for Tissue Regeneration, Donaueschingenstrasse 13, 1200 Vienna, Austria
| | - Alessandra Roncaglioni
- Department of Environmental Health Sciences, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Via Mario Negri 2, 20156 Milan, Italy
| | - Astrid Schmidt
- Placenta Lab, Department of Obstetrics, University Hospital Jena, Am Klinikum 1, 07747 Jena, Germany
| | - Marco Straccia
- FRESCI by Science&Strategy SL, C/Roure Monjo 33, Vacarisses, 08233 Barcelona, Spain
| | - Sabrina Tait
- Centre for Gender-Specific Medicine, Istituto Superiore di Sanità, 00161 Rome, Italy
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10
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Comparison of Different Clinical Chemotherapeutical Agents’ Toxicity and Cell Response on Mesenchymal Stem Cells and Cancer Cells. Cells 2022; 11:cells11192942. [PMID: 36230904 PMCID: PMC9563435 DOI: 10.3390/cells11192942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 09/08/2022] [Accepted: 09/17/2022] [Indexed: 11/29/2022] Open
Abstract
Mesenchymal stem cells (MSCs) or fibroblasts are one of the most abundant cell types in the tumor microenvironment (TME) exerting various anti- and pro-apoptotic effects during tumorigenesis, invasion, and drug treatment. Despite the recently discovered importance of MSCs in tumor progression and therapy, the response of these cells to chemotherapeutics compared to cancer cells is rarely investigated. A widely accepted view is that these naive MSCs have higher drug tolerance than cancer cells due to a significantly lower proliferation rate. Here, we examine the differences and similarities in the sensitivity of MSCs and cancer cells to nine diverse chemotherapy agents and show that, although MSCs have a slower cell cycle, these cells are still sensitive to various drugs. Surprisingly, MSCs showed similar sensitivity to a panel of compounds, however, suffered fewer DNA double-stranded breaks, did not enter into a senescent state, and was virtually incapable of apoptosis. Our results suggest that MSCs and cancer cells have different cell fates after drug treatment, and this could influence therapy outcome. These findings could help design drug combinations targeting both MSCs and cancer cells in the TME.
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11
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Immortalized Mesenchymal Stem Cells: A Safe Cell Source for Cellular or Cell Membrane-Based Treatment of Glioma. Stem Cells Int 2022; 2022:6430565. [PMID: 35463812 PMCID: PMC9020902 DOI: 10.1155/2022/6430565] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 01/04/2022] [Accepted: 02/18/2022] [Indexed: 12/12/2022] Open
Abstract
Mesenchymal stem cells (MSCs) have emerged as putative therapeutic tools due to their intrinsic tumor tropism, and anti-tumor and immunoregulatory properties. The limited passage and self-differentiation abilities of MSCs in vitro hinder preclinical studies on them. In this study, we focused on the safety of immortalized mesenchymal stem cells (im-MSCs) and, for the first time, studied the feasibility of im-MSCs as candidates for the treatment of glioma. The im-MSCs were constructed by lentiviral transfection of genes. The proliferative capacity of im-MSCs and the proliferative phenotype of MSCs and MSCs co-cultured with glioma cells (U87) were measured using CCK-8 or EdU assays. After long-term culture, karyotyping of im-MSCs was conducted. The tumorigenicity of engineered MSCs was evaluated using soft agar cloning assays. Next, the engineered cells were injected into the brain of female BALB/c nude mice. Finally, the cell membranes of im-MSCs were labeled with DiO or DiR to detect their ability to be taken up by glioma cells and target in situ gliomas using the IVIS system. Engineered cells retained the immunophenotype of MSC; im-MSCs maintained the ability to differentiate into mesenchymal lineages in vitro; and im-MSCs showed stronger proliferative capacity than unengineered MSCs but without colony formation in soft agar, no tumorigenicity in the brain, and normal chromosomes. MSCs or im-MSCs co-cultured with U87 cells showed enhanced proliferation ability, but did not show malignant characteristics in vitro. Immortalized cells continued to express homing molecules. The cell membranes of im-MSCs were taken up by glioma cells and targeted in situ gliomas in vivo, suggesting that im-MSCs and their plasma membranes can be used as natural drug carriers for targeting gliomas, and providing a safe, adequate, quality-controlled, and continuous source for the treatment of gliomas based on whole-cell or cell membrane carriers.
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12
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Stojiljković A, Gaschen V, Forterre F, Rytz U, Stoffel MH, Bluteau J. Novel immortalization approach defers senescence of cultured canine adipose-derived mesenchymal stromal cells. GeroScience 2021; 44:1301-1323. [PMID: 34806133 DOI: 10.1007/s11357-021-00488-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 11/08/2021] [Indexed: 01/10/2023] Open
Abstract
In the last decades, the scientific community spared no effort to elucidate the therapeutic potential of mesenchymal stromal cells (MSCs). Unfortunately, in vitro cellular senescence occurring along with a loss of proliferative capacity is a major drawback in view of future therapeutic applications of these cells in the field of regenerative medicine. Even though insight into the mechanisms of replicative senescence in human medicine has evolved dramatically, knowledge about replicative senescence of canine MSCs is still scarce. Thus, we developed a high-content analysis workflow to simultaneously investigate three important characteristics of senescence in canine adipose-derived MSCs (cAD-MSCs): morphological changes, activation of the cell cycle arrest machinery, and increased activity of the senescence-associated β-galactosidase. We took advantage of this tool to demonstrate that passaging of cAD-MSCs results in the appearance of a senescence phenotype and proliferation arrest. This was partially prevented upon immortalization of these cells using a newly designed PiggyBac™ Transposon System, which allows for the expression of the human polycomb ring finger proto-oncogene BMI1 and the human telomerase reverse transcriptase under the same promotor. Our results indicate that cAD-MSCs immortalized with this new vector maintain their proliferation capacity and differentiation potential for a longer time than untreated cAD-MSCs. This study not only offers a workflow to investigate replicative senescence in eukaryotic cells with a high-content analysis approach but also paves the way for a rapid and effective generation of immortalized MSC lines. This promotes a better understanding of these cells in view of future applications in regenerative medicine.
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Affiliation(s)
- Ana Stojiljković
- Division of Veterinary Anatomy, Vetsuisse Faculty, University of Bern, Bern, Switzerland. .,Graduate School for Cellular and Biomedical Sciences, University of Bern, Bern, Switzerland.
| | - Véronique Gaschen
- Division of Veterinary Anatomy, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Franck Forterre
- Division of Small Animal Surgery and Orthopaedics, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Ulrich Rytz
- Division of Small Animal Surgery and Orthopaedics, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Michael H Stoffel
- Division of Veterinary Anatomy, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Jasmin Bluteau
- Division of Veterinary Anatomy, Vetsuisse Faculty, University of Bern, Bern, Switzerland
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13
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Inoue Y, Hasegawa S, Hasebe Y, Kawagishi-Hotta M, Okuno R, Yamada T, Adachi H, Miyachi K, Ishii Y, Sugiura K, Akamatsu H. Establishment of Three Types of Immortalized Human Skin Stem Cell Lines Derived from the Single Donor. Biol Pharm Bull 2021; 44:1403-1412. [PMID: 34602549 DOI: 10.1248/bpb.b21-00058] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Currently, human-skin derived cell culture is a basic technique essential for dermatological research, cellular engineering research, drug development, and cosmetic development. But the number of donors is limited, and primary cell function reduces through cell passage. In particular, since adult stem cells are present in a small amount in living tissues, it has been difficult to obtain a large amount of stem cells and to stably culture them. In this study, skin derived cells were isolated from the epidermis, dermis, and adipose tissue collected from single donor, and immortalization was induced through gene transfer. Subsequently, cell lines that could be used as stem cell models were selected using the differentiation potential and the expression of stem cell markers as indices, and it was confirmed that these could be stably cultured. The immortalized cell lines established in this study have the potential to be applied not only to basic dermatological research but also to a wide range of fields such as drug screening and cell engineering.
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Affiliation(s)
- Yu Inoue
- Research Laboratories, Nippon Menard Cosmetic Co., Ltd.,Nagoya University-MENARD Collaborative Research Chair, Nagoya University Graduate School of Medicine
| | - Seiji Hasegawa
- Research Laboratories, Nippon Menard Cosmetic Co., Ltd.,Nagoya University-MENARD Collaborative Research Chair, Nagoya University Graduate School of Medicine.,Department of Dermatology, Fujita Health University School of Medicine
| | - Yuichi Hasebe
- Research Laboratories, Nippon Menard Cosmetic Co., Ltd.,Nagoya University-MENARD Collaborative Research Chair, Nagoya University Graduate School of Medicine
| | - Mika Kawagishi-Hotta
- Research Laboratories, Nippon Menard Cosmetic Co., Ltd.,Nagoya University-MENARD Collaborative Research Chair, Nagoya University Graduate School of Medicine.,Department of Applied Cell and Regenerative Medicine, Fujita Health University School of Medicine
| | - Ryosuke Okuno
- Research Laboratories, Nippon Menard Cosmetic Co., Ltd.,Nagoya University-MENARD Collaborative Research Chair, Nagoya University Graduate School of Medicine
| | - Takaaki Yamada
- Research Laboratories, Nippon Menard Cosmetic Co., Ltd.,Department of Dermatology, Fujita Health University School of Medicine.,Department of Applied Cell and Regenerative Medicine, Fujita Health University School of Medicine
| | | | | | - Yoshie Ishii
- Research Laboratories, Nippon Menard Cosmetic Co., Ltd.,Department of Applied Cell and Regenerative Medicine, Fujita Health University School of Medicine
| | - Kazumitsu Sugiura
- Department of Dermatology, Fujita Health University School of Medicine
| | - Hirohiko Akamatsu
- Department of Applied Cell and Regenerative Medicine, Fujita Health University School of Medicine
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14
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Investigating the effects of IDO1, PTGS2, and TGF-β1 overexpression on immunomodulatory properties of hTERT-MSCs and their extracellular vesicles. Sci Rep 2021; 11:7825. [PMID: 33837229 PMCID: PMC8035148 DOI: 10.1038/s41598-021-87153-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Accepted: 03/25/2021] [Indexed: 02/07/2023] Open
Abstract
The therapeutic potential of mesenchymal stem cells (MSCs) is out of the question. Yet, recent drawbacks have resulted in a strategic shift towards the application of MSC-derived cell-free products such as extracellular vesicles (EVs). Recent reports revealed that functional properties of MSCs, including EV secretion patterns, correlate with microenvironmental cues. These findings highlight the urgent need for defining the optimal circumstances for EV preparation. Considering the limitations of primary cells, we employed immortalized cells as an alternative source to prepare therapeutically sufficient EV numbers. Herein, the effects of different conditional environments are explored on human TERT-immortalized MSCs (hTERT-MSCs). The latter were transduced to overexpress IDO1, PTGS2, and TGF-β1 transgenes either alone or in combination, and their immunomodulatory properties were analyzed thereafter. Likewise, EVs derived from these various MSCs were extensively characterized. hTERT-MSCs-IDO1 exerted superior inhibitory effects on lymphocytes, significantly more than hTERT-MSCs-IFN-γ. As such, IDO1 overexpression promoted the immunomodulatory properties of such enriched EVs. Considering the limitations of cell therapy like tumor formation and possible immune responses in the host, the results presented herein might be considered as a feasible model for the induction of immunomodulation in off-the-shelf and cell-free therapeutics, especially for autoimmune diseases.
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15
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Tan JJ, Wang L, Mo TT, Dai YF, Lu J, Liu X, Chen HH, Tian WD, Li XP. Establishment of Immortalized Laryngeal Epithelial Cells Transfected with Bmi1. Cell Transplant 2021; 29:963689720908198. [PMID: 32249592 PMCID: PMC7444206 DOI: 10.1177/0963689720908198] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Primary laryngeal epithelial cells are essential to exploring the
mechanisms of laryngeal and voice disorders; however, they are
difficult to study and apply because of their limited life span. The
purpose of this study was to develop a stable and reliable in
vitro model for the comprehensive study of the
pathogenesis of laryngeal and voice diseases. The pLVTHM-Bmi1 plasmid
was constructed and used to immortalize primary laryngeal epithelial
cells by lentiviral infection. The expressions of Bmi1, human
telomerase reverse transcriptase (hTERT), p53, and pRB pathway
proteins were detected by western blotting. Functional characteristics
of the immortalized cell lines were verified by cell senescence
β-galactosidase staining, 5-ethynyl-2′-deoxyuridine cell proliferation
test, and flow cytometry. We successfully introduced Bmi into human
subglottic (hSG) cells and human ventricle (hV) cells. Both the human
immortalized subglottic Bmi1 (hSG-Bmi1) cell line and the human
immortalized ventricle Bmi1 (hV-Bmi1) cell line maintained normal
epithelial morphology and divided successfully after more than 20
culture passages. As Bmi1 was overexpressed in these cells, the
expression of human telomerase reverse transcriptase (hTERT) and
phosphorylated Rb increased while p16 and p21 decreased. Following
Bmi1-mediated immortalization, cell senescence decreased
significantly, and cell proliferation was accelerated. Tumor formation
was not observed for hSG, hV, or hSG-Bmi1, and hV-Bmi1 cells in nude
mice. hSG-Bmi1 cells dominated by stratified squamous epithelium and
hV-Bmi1 cells dominated by columnar cells were established. The new
cell lines lay a foundation for the study of the pathogenic mechanisms
of laryngeal and voice diseases.
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Affiliation(s)
- Jia-Jie Tan
- Department of Otolaryngology, Head and Neck Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China.,Both the authors are co-first authors and contributed equally to this article
| | - Lu Wang
- Department of Otolaryngology, Head and Neck Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China.,Department of Otolaryngology, Head and Neck Surgery, Shenzhen University General Hospital, Shenzhen, Guangdong, China.,Both the authors are co-first authors and contributed equally to this article
| | - Ting-Ting Mo
- Department of Otolaryngology, Head and Neck Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Yuan-Feng Dai
- Department of Otolaryngology, Head and Neck Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Juan Lu
- Department of Otolaryngology, Head and Neck Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Xiong Liu
- Department of Otolaryngology, Head and Neck Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Huai-Hong Chen
- Department of Otolaryngology, Head and Neck Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Wen-Dong Tian
- Department of Otolaryngology, Head and Neck Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Xiang-Ping Li
- Department of Otolaryngology, Head and Neck Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
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16
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MLL4-associated condensates counterbalance Polycomb-mediated nuclear mechanical stress in Kabuki syndrome. Nat Genet 2020; 52:1397-1411. [PMID: 33169020 PMCID: PMC7610431 DOI: 10.1038/s41588-020-00724-8] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Accepted: 09/22/2020] [Indexed: 12/21/2022]
Abstract
The genetic elements required to tune gene expression are partitioned in active and repressive nuclear condensates. Chromatin compartments include transcriptional clusters whose dynamic establishment and functioning depend on multivalent interactions occurring among transcription factors, cofactors and basal transcriptional machinery. However, how chromatin players contribute to the assembly of transcriptional condensates is poorly understood. By interrogating the effect of KMT2D (also known as MLL4) haploinsufficiency in Kabuki syndrome, we found that mixed lineage leukemia 4 (MLL4) contributes to the assembly of transcriptional condensates through liquid-liquid phase separation. MLL4 loss of function impaired Polycomb-dependent chromatin compartmentalization, altering the nuclear architecture. By releasing the nuclear mechanical stress through inhibition of the mechanosensor ATR, we re-established the mechanosignaling of mesenchymal stem cells and their commitment towards chondrocytes both in vitro and in vivo. This study supports the notion that, in Kabuki syndrome, the haploinsufficiency of MLL4 causes an altered functional partitioning of chromatin, which determines the architecture and mechanical properties of the nucleus.
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17
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Piñeiro-Ramil M, Sanjurjo-Rodríguez C, Castro-Viñuelas R, Rodríguez-Fernández S, Fuentes-Boquete I, Blanco F, Díaz-Prado S. Usefulness of Mesenchymal Cell Lines for Bone and Cartilage Regeneration Research. Int J Mol Sci 2019; 20:E6286. [PMID: 31847077 PMCID: PMC6940884 DOI: 10.3390/ijms20246286] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 12/10/2019] [Accepted: 12/11/2019] [Indexed: 12/18/2022] Open
Abstract
The unavailability of sufficient numbers of human primary cells is a major roadblock for in vitro repair of bone and/or cartilage, and for performing disease modelling experiments. Immortalized mesenchymal stromal cells (iMSCs) may be employed as a research tool for avoiding these problems. The purpose of this review was to revise the available literature on the characteristics of the iMSC lines, paying special attention to the maintenance of the phenotype of the primary cells from which they were derived, and whether they are effectively useful for in vitro disease modeling and cell therapy purposes. This review was performed by searching on Web of Science, Scopus, and PubMed databases from 1 January 2015 to 30 September 2019. The keywords used were ALL = (mesenchymal AND ("cell line" OR immortal*) AND (cartilage OR chondrogenesis OR bone OR osteogenesis) AND human). Only original research studies in which a human iMSC line was employed for osteogenesis or chondrogenesis experiments were included. After describing the success of the immortalization protocol, we focused on the iMSCs maintenance of the parental phenotype and multipotency. According to the literature revised, it seems that the maintenance of these characteristics is not guaranteed by immortalization, and that careful selection and validation of clones with particular characteristics is necessary for taking advantage of the full potential of iMSC to be employed in bone and cartilage-related research.
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Affiliation(s)
- M. Piñeiro-Ramil
- Grupo de Investigación en Terapia Celular e Medicina Rexenerativa, Departamento de Fisioterapia, Medicina e Ciencias Biomédicas, Facultade de Ciencias da Saúde, Universidade da Coruña (UDC), Campus de A Coruña, 15006 A Coruña, Spain; (C.S.-R.); (R.C.-V.); (S.R.-F.)
- Grupo de Investigación en Terapia Celular e Medicina Rexenerativa, Instituto de Investigación Biomédica de A Coruña (INIBIC), Complexo Hospitalario Universitario A Coruña (CHUAC), Servizo Galego de Saúde (SERGAS), Universidade da Coruña (UDC), 15006 A Coruña, Spain
- Grupo de Investigación en Terapia Celular e Medicina Rexenerativa, Centro de Investigacións Científicas Avanzadas (CICA), Agrupación Estratéxica entre o CICA e o Instituto de Investigación Biomédica de A Coruña (INIBIC), Universidade da Coruña (UDC), 15071 A Coruña, Spain
| | - C. Sanjurjo-Rodríguez
- Grupo de Investigación en Terapia Celular e Medicina Rexenerativa, Departamento de Fisioterapia, Medicina e Ciencias Biomédicas, Facultade de Ciencias da Saúde, Universidade da Coruña (UDC), Campus de A Coruña, 15006 A Coruña, Spain; (C.S.-R.); (R.C.-V.); (S.R.-F.)
- Grupo de Investigación en Terapia Celular e Medicina Rexenerativa, Instituto de Investigación Biomédica de A Coruña (INIBIC), Complexo Hospitalario Universitario A Coruña (CHUAC), Servizo Galego de Saúde (SERGAS), Universidade da Coruña (UDC), 15006 A Coruña, Spain
- Grupo de Investigación en Terapia Celular e Medicina Rexenerativa, Centro de Investigacións Científicas Avanzadas (CICA), Agrupación Estratéxica entre o CICA e o Instituto de Investigación Biomédica de A Coruña (INIBIC), Universidade da Coruña (UDC), 15071 A Coruña, Spain
- Centro de Investigación Biomédica en Red (CIBER) de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), 28029 Madrid, Spain;
| | - R. Castro-Viñuelas
- Grupo de Investigación en Terapia Celular e Medicina Rexenerativa, Departamento de Fisioterapia, Medicina e Ciencias Biomédicas, Facultade de Ciencias da Saúde, Universidade da Coruña (UDC), Campus de A Coruña, 15006 A Coruña, Spain; (C.S.-R.); (R.C.-V.); (S.R.-F.)
- Grupo de Investigación en Terapia Celular e Medicina Rexenerativa, Instituto de Investigación Biomédica de A Coruña (INIBIC), Complexo Hospitalario Universitario A Coruña (CHUAC), Servizo Galego de Saúde (SERGAS), Universidade da Coruña (UDC), 15006 A Coruña, Spain
- Grupo de Investigación en Terapia Celular e Medicina Rexenerativa, Centro de Investigacións Científicas Avanzadas (CICA), Agrupación Estratéxica entre o CICA e o Instituto de Investigación Biomédica de A Coruña (INIBIC), Universidade da Coruña (UDC), 15071 A Coruña, Spain
| | - S. Rodríguez-Fernández
- Grupo de Investigación en Terapia Celular e Medicina Rexenerativa, Departamento de Fisioterapia, Medicina e Ciencias Biomédicas, Facultade de Ciencias da Saúde, Universidade da Coruña (UDC), Campus de A Coruña, 15006 A Coruña, Spain; (C.S.-R.); (R.C.-V.); (S.R.-F.)
- Grupo de Investigación en Terapia Celular e Medicina Rexenerativa, Instituto de Investigación Biomédica de A Coruña (INIBIC), Complexo Hospitalario Universitario A Coruña (CHUAC), Servizo Galego de Saúde (SERGAS), Universidade da Coruña (UDC), 15006 A Coruña, Spain
- Grupo de Investigación en Terapia Celular e Medicina Rexenerativa, Centro de Investigacións Científicas Avanzadas (CICA), Agrupación Estratéxica entre o CICA e o Instituto de Investigación Biomédica de A Coruña (INIBIC), Universidade da Coruña (UDC), 15071 A Coruña, Spain
| | - I.M. Fuentes-Boquete
- Grupo de Investigación en Terapia Celular e Medicina Rexenerativa, Departamento de Fisioterapia, Medicina e Ciencias Biomédicas, Facultade de Ciencias da Saúde, Universidade da Coruña (UDC), Campus de A Coruña, 15006 A Coruña, Spain; (C.S.-R.); (R.C.-V.); (S.R.-F.)
- Grupo de Investigación en Terapia Celular e Medicina Rexenerativa, Instituto de Investigación Biomédica de A Coruña (INIBIC), Complexo Hospitalario Universitario A Coruña (CHUAC), Servizo Galego de Saúde (SERGAS), Universidade da Coruña (UDC), 15006 A Coruña, Spain
- Grupo de Investigación en Terapia Celular e Medicina Rexenerativa, Centro de Investigacións Científicas Avanzadas (CICA), Agrupación Estratéxica entre o CICA e o Instituto de Investigación Biomédica de A Coruña (INIBIC), Universidade da Coruña (UDC), 15071 A Coruña, Spain
- Centro de Investigación Biomédica en Red (CIBER) de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), 28029 Madrid, Spain;
| | - F.J. Blanco
- Centro de Investigación Biomédica en Red (CIBER) de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), 28029 Madrid, Spain;
- Grupo de Investigación en Reumatología (GIR), Instituto de Investigación Biomédica de A Coruña (INIBIC), Complexo Hospitalario Universitario A Coruña (CHUAC), Servizo Galego de Saúde (SERGAS), 15006 A Coruña, Spain
| | - S.M. Díaz-Prado
- Grupo de Investigación en Terapia Celular e Medicina Rexenerativa, Departamento de Fisioterapia, Medicina e Ciencias Biomédicas, Facultade de Ciencias da Saúde, Universidade da Coruña (UDC), Campus de A Coruña, 15006 A Coruña, Spain; (C.S.-R.); (R.C.-V.); (S.R.-F.)
- Grupo de Investigación en Terapia Celular e Medicina Rexenerativa, Instituto de Investigación Biomédica de A Coruña (INIBIC), Complexo Hospitalario Universitario A Coruña (CHUAC), Servizo Galego de Saúde (SERGAS), Universidade da Coruña (UDC), 15006 A Coruña, Spain
- Grupo de Investigación en Terapia Celular e Medicina Rexenerativa, Centro de Investigacións Científicas Avanzadas (CICA), Agrupación Estratéxica entre o CICA e o Instituto de Investigación Biomédica de A Coruña (INIBIC), Universidade da Coruña (UDC), 15071 A Coruña, Spain
- Centro de Investigación Biomédica en Red (CIBER) de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), 28029 Madrid, Spain;
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18
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Rauch A, Haakonsson AK, Madsen JGS, Larsen M, Forss I, Madsen MR, Van Hauwaert EL, Wiwie C, Jespersen NZ, Tencerova M, Nielsen R, Larsen BD, Röttger R, Baumbach J, Scheele C, Kassem M, Mandrup S. Osteogenesis depends on commissioning of a network of stem cell transcription factors that act as repressors of adipogenesis. Nat Genet 2019; 51:716-727. [PMID: 30833796 DOI: 10.1038/s41588-019-0359-1] [Citation(s) in RCA: 125] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Accepted: 01/22/2019] [Indexed: 12/19/2022]
Abstract
Mesenchymal (stromal) stem cells (MSCs) constitute populations of mesodermal multipotent cells involved in tissue regeneration and homeostasis in many different organs. Here we performed comprehensive characterization of the transcriptional and epigenomic changes associated with osteoblast and adipocyte differentiation of human MSCs. We demonstrate that adipogenesis is driven by considerable remodeling of the chromatin landscape and de novo activation of enhancers, whereas osteogenesis involves activation of preestablished enhancers. Using machine learning algorithms for in silico modeling of transcriptional regulation, we identify a large and diverse transcriptional network of pro-osteogenic and antiadipogenic transcription factors. Intriguingly, binding motifs for these factors overlap with SNPs related to bone and fat formation in humans, and knockdown of single members of this network is sufficient to modulate differentiation in both directions, thus indicating that lineage determination is a delicate balance between the activities of many different transcription factors.
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Affiliation(s)
- Alexander Rauch
- Functional Genomics and Metabolism Research Unit, Department of Biochemistry and Molecular Biology, University of Southern Denmark, Odense, Denmark
| | - Anders K Haakonsson
- Molecular Endocrinology and Stem Cell Research Unit (KMEB), Department of Endocrinology and Metabolism, Odense University Hospital and Department of Clinical Research, University of Southern Denmark, Odense, Denmark
| | - Jesper G S Madsen
- Functional Genomics and Metabolism Research Unit, Department of Biochemistry and Molecular Biology, University of Southern Denmark, Odense, Denmark
| | - Mette Larsen
- Functional Genomics and Metabolism Research Unit, Department of Biochemistry and Molecular Biology, University of Southern Denmark, Odense, Denmark
| | - Isabel Forss
- Functional Genomics and Metabolism Research Unit, Department of Biochemistry and Molecular Biology, University of Southern Denmark, Odense, Denmark
| | - Martin R Madsen
- Functional Genomics and Metabolism Research Unit, Department of Biochemistry and Molecular Biology, University of Southern Denmark, Odense, Denmark
| | - Elvira L Van Hauwaert
- Functional Genomics and Metabolism Research Unit, Department of Biochemistry and Molecular Biology, University of Southern Denmark, Odense, Denmark
| | - Christian Wiwie
- Department of Mathematics and Computer Science, University of Southern Denmark, Odense, Denmark
| | - Naja Z Jespersen
- Centre of Inflammation and Metabolism and Centre for Physical Activity Research, Rigshospitalet, University Hospital of Copenhagen, Copenhagen, Denmark.,Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.,Danish Diabetes Academy, Odense University Hospital, Odense, Denmark
| | - Michaela Tencerova
- Molecular Endocrinology and Stem Cell Research Unit (KMEB), Department of Endocrinology and Metabolism, Odense University Hospital and Department of Clinical Research, University of Southern Denmark, Odense, Denmark
| | - Ronni Nielsen
- Functional Genomics and Metabolism Research Unit, Department of Biochemistry and Molecular Biology, University of Southern Denmark, Odense, Denmark
| | - Bjørk D Larsen
- Functional Genomics and Metabolism Research Unit, Department of Biochemistry and Molecular Biology, University of Southern Denmark, Odense, Denmark
| | - Richard Röttger
- Department of Mathematics and Computer Science, University of Southern Denmark, Odense, Denmark
| | - Jan Baumbach
- Department of Mathematics and Computer Science, University of Southern Denmark, Odense, Denmark.,Experimental Bioinformatics, TUM School of Life Sciences, Technical University of Munich, Freising-Weihenstephan, Germany
| | - Camilla Scheele
- Centre of Inflammation and Metabolism and Centre for Physical Activity Research, Rigshospitalet, University Hospital of Copenhagen, Copenhagen, Denmark.,Novo Nordisk Foundation Center for Basic Metabolic Research, University of Copenhagen, Copenhagen, Denmark
| | - Moustapha Kassem
- Molecular Endocrinology and Stem Cell Research Unit (KMEB), Department of Endocrinology and Metabolism, Odense University Hospital and Department of Clinical Research, University of Southern Denmark, Odense, Denmark
| | - Susanne Mandrup
- Functional Genomics and Metabolism Research Unit, Department of Biochemistry and Molecular Biology, University of Southern Denmark, Odense, Denmark.
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19
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Burk J, Holland H, Lauermann AF, May T, Siedlaczek P, Charwat V, Kasper C. Generation and characterization of a functional human adipose-derived multipotent mesenchymal stromal cell line. Biotechnol Bioeng 2019; 116:1417-1426. [PMID: 30739319 DOI: 10.1002/bit.26950] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Revised: 02/01/2019] [Accepted: 02/06/2019] [Indexed: 12/12/2022]
Abstract
Multipotent mesenchymal stromal cells (MSC) and MSC-derived products have emerged as promising therapeutic tools. To fully exploit their potential, further mechanistic studies are still necessary and bioprocessing needs to be optimized, which requires an abundant supply of functional MSC for basic research. To address this need, here we used a novel technology to establish a human adipose-derived MSC line with functional characteristics representative of primary MSC. Primary MSC were isolated and subjected to lentiviral transduction with a library of expansion genes. Clonal cell lines were generated and evaluated on the basis of their morphology, immunophenotype, and proliferation potential. One clone (K5 iMSC) was then selected for further characterization. This clone had integrated a specific transgene combination including genes involved in stemness and maintenance of adult stem cells. Favorably, the K5 iMSC showed cell characteristics resembling juvenile MSC, as they displayed a shorter cell length and enhanced migration and proliferation compared with the non-immortalized original primary MSC (p < 0.05). Still, their immunophenotype and differentiation potential corresponded to the original primary MSC and the MSC definition criteria, and cytogenetic analyses revealed no clonal aberrations. We conclude that the technology used is applicable to generate functional MSC lines for basic research and possible future bioprocessing applications.
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Affiliation(s)
- Janina Burk
- Institute of Biotechnology, University of Natural Resources and Life Sciences, Vienna, Austria
| | - Heidrun Holland
- Saxon Incubator for Clinical Translation (SIKT), University of Leipzig, Leipzig, Germany
| | - Anne F Lauermann
- Institute of Biotechnology, University of Natural Resources and Life Sciences, Vienna, Austria
| | | | - Philipp Siedlaczek
- Institute of Physics and Materials Science, University of Natural Resources and Life Sciences, Vienna, Austria
| | - Verena Charwat
- Institute of Biotechnology, University of Natural Resources and Life Sciences, Vienna, Austria
| | - Cornelia Kasper
- Institute of Biotechnology, University of Natural Resources and Life Sciences, Vienna, Austria
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20
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Wang Y, Chen S, Yan Z, Pei M. A prospect of cell immortalization combined with matrix microenvironmental optimization strategy for tissue engineering and regeneration. Cell Biosci 2019; 9:7. [PMID: 30627420 PMCID: PMC6321683 DOI: 10.1186/s13578-018-0264-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Accepted: 12/21/2018] [Indexed: 12/20/2022] Open
Abstract
Cellular senescence is a major hurdle for primary cell-based tissue engineering and regenerative medicine. Telomere erosion, oxidative stress, the expression of oncogenes and the loss of tumor suppressor genes all may account for the cellular senescence process with the involvement of various signaling pathways. To establish immortalized cell lines for research and clinical use, strategies have been applied including internal genomic or external matrix microenvironment modification. Considering the potential risks of malignant transformation and tumorigenesis of genetic manipulation, environmental modification methods, especially the decellularized cell-deposited extracellular matrix (dECM)-based preconditioning strategy, appear to be promising for tissue engineering-aimed cell immortalization. Due to few review articles focusing on this topic, this review provides a summary of cell senescence and immortalization and discusses advantages and limitations of tissue engineering and regeneration with the use of immortalized cells as well as a potential rejuvenation strategy through combination with the dECM approach.
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Affiliation(s)
- Yiming Wang
- 1Stem Cell and Tissue Engineering Laboratory, Department of Orthopaedics, West Virginia University, PO Box 9196, 64 Medical Center Drive, Morgantown, WV 26506-9196 USA.,2Department of Orthopaedics, Zhongshan Hospital of Fudan University, 180 Fenglin Road, Shanghai, 200032 China
| | - Song Chen
- 3Department of Orthopaedics, Chengdu Military General Hospital, Chengdu, 610083 Sichuan China
| | - Zuoqin Yan
- 2Department of Orthopaedics, Zhongshan Hospital of Fudan University, 180 Fenglin Road, Shanghai, 200032 China
| | - Ming Pei
- 1Stem Cell and Tissue Engineering Laboratory, Department of Orthopaedics, West Virginia University, PO Box 9196, 64 Medical Center Drive, Morgantown, WV 26506-9196 USA.,4WVU Cancer Institute, Robert C. Byrd Health Sciences Center, West Virginia University, Morgantown, WV 26506 USA
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21
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Mihály D, Nagy N, Papp G, Pápai Z, Sápi Z. Release of circulating tumor cells and cell-free nucleic acids is an infrequent event in synovial sarcoma: liquid biopsy analysis of 15 patients diagnosed with synovial sarcoma. Diagn Pathol 2018; 13:81. [PMID: 30326929 PMCID: PMC6191904 DOI: 10.1186/s13000-018-0756-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Accepted: 10/02/2018] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Synovial sarcoma is a rare soft tissue tumor which contains the unique SS18-SSX1, SS18-SSX2 - or, rarely, SS18-SSX4 - fusion transcripts. It is well known that some soft tissue tumors, like Ewing sarcomas and myxoid liposarcomas, can spread via the blood with free circulating tumor cells (CTC); this can be detected by several sensitive molecular biology methods. Here we report a study of fifteen synovial sarcoma patients with varied clinical backgrounds. METHOD After blood withdrawal and nucleic acid isolation, we attempted to detect the SS18-SSX fusion genes from circulating tumor cells or cell-free nucleic acids with nested PCR and droplet digital PCR. RESULTS SS18-SSX2 fusion transcript was identified in a small copy number with droplet digital PCR in one case. Nested PCR could not detect any of the fusion transcripts in the examined 15 synovial sarcoma cases. CONCLUSIONS Heretofore two case reports could detect CTCs in synovial sarcoma - in the first paper, the patient was diagnosed with poorly differentiated type while the other had a rare primary gastric synovial sarcoma. However, until now, no other studies have detected CTCs in the peripheral blood of synovial sarcoma patients. Based on our findings, we can conclude that detection of the chimeric SS18-SSX fusion gene after surgical excision and/or chemotherapy/radiotherapy is a rare circumstance and hence in itself is not sufficient for monitoring the tumor recurrence. Therefore, monitoring of other possible biomarkers - for example synovial sarcoma specific miRNAs - is recommended.
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Affiliation(s)
- Dóra Mihály
- 1st Department of Pathology and Experimental Cancer Research, Semmelweis University, Üllői út 26, Budapest, H-1085, Hungary
| | - Noémi Nagy
- 1st Department of Pathology and Experimental Cancer Research, Semmelweis University, Üllői út 26, Budapest, H-1085, Hungary
| | - Gergő Papp
- 1st Department of Pathology and Experimental Cancer Research, Semmelweis University, Üllői út 26, Budapest, H-1085, Hungary
| | - Zsuzsanna Pápai
- Department of Oncology, Military Hospital Budapest, Podmaniczky utca 111, Budapest, H-1062, Hungary
| | - Zoltán Sápi
- 1st Department of Pathology and Experimental Cancer Research, Semmelweis University, Üllői út 26, Budapest, H-1085, Hungary.
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22
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Mihály D, Papp G, Mervai Z, Reszegi A, Tátrai P, Szalóki G, Sápi J, Sápi Z. The oncomir face of microRNA-206: A permanent miR-206 transfection study. Exp Biol Med (Maywood) 2018; 243:1014-1023. [PMID: 30111166 DOI: 10.1177/1535370218795406] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
MiR-206 is a remarkable miRNA because it functions as a suppressor miRNA in rhabdomyosarcoma while at the same time, as previously showed, it can act as an oncomiRNA in SMARCB1 immunonegative soft tissue sarcomas. The aim of this study was to investigate the effect of miR-206 on its several target genes in various human tumorous and normal cell lines. In the current work, we created miR-206-overexpressing cell lines (HT-1080, Caco2, iASC, and SS-iASC) using permanent transfection. mRNA expression of the target genes of miR-206 (SMARCB1, ACTL6A, CCND1, POLA1, NOTCH3, MET, and G6PD) and SMARCB1 protein expression were examined with quantitative real-time polymerase chain reaction, immunoblotting, immunocytochemistry, and flow cytometry. MiRNA inhibition was used to validate our results. We found a diverse silencing effect of miR-206 on its target genes. While an overall tendency of downregulation was noted, expression profiles of individual cell lines showed large variability. Only CCND1 and MET were consistently downregulated. MiR-206 had an antiproliferative effect on a normal human fibroblast cell line. A strong silencing effect of SMARCB1 in miR-206 transfected SS-iASC was most likely caused by the synergic influence of the SS18-SSX1 fusion protein and miR-206. In the same cell line, a moderate decrease of SMARCB1 protein expression could be observed with immunocytochemistry and flow cytometry. In the most comprehensive analysis of miR-206 effects so far, a modest but significant downregulation of miR-206 targets on the mRNA level was confirmed across all cell lines. However, the variability of the effect shows that the action of this miRNA is largely cell context-dependent. Our results also support the conception that the oncomiR effect of miR-206 on SMARCB1 plays an important but not exclusive role in SMARCB1 immunonegative soft tissue sarcomas so it can be considered important in planning the targeted therapy of these tumors in the future. Impact statement Mir-206 is a very unique microRNA because it can act as a suppressor miRNA or as an oncomiRNA depending on the tumor tissue. In SMARCB1 negative soft tissue sarcomas miR-206 is overexpressed, so thus in epithelioid and synovial sarcomas it functions as an oncomiRNA. MiR-206 has diverse silencing effects on its target genes. We found that the action of miR-206 is largely cell context dependent. The oncomiR role of miR-206 is crucial but not exclusive in SMARCB1 negative soft tissue sarcomas and miR-206 has an antiproliferative effect on a normal human fibroblast cell line. Expressions of miR-206 targets observed in tumors can only be reproduced in the corresponding tumorous cell lines. This is the first study which examined the permanent effect of miR-206 on its target genes in normal, tumor, and genetically engineered cell lines.
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Affiliation(s)
- Dóra Mihály
- 1 1st Department of Pathology and Experimental Cancer Research, Semmelweis University, Budapest H-1085, Hungary
| | - Gergő Papp
- 1 1st Department of Pathology and Experimental Cancer Research, Semmelweis University, Budapest H-1085, Hungary
| | - Zsolt Mervai
- 1 1st Department of Pathology and Experimental Cancer Research, Semmelweis University, Budapest H-1085, Hungary
| | - Andrea Reszegi
- 1 1st Department of Pathology and Experimental Cancer Research, Semmelweis University, Budapest H-1085, Hungary
| | | | - Gábor Szalóki
- 1 1st Department of Pathology and Experimental Cancer Research, Semmelweis University, Budapest H-1085, Hungary
| | - Johanna Sápi
- 3 Óbuda University, University Research, Innovation and Service Center, Physiological Controls Research Center, Budapest H-1034, Hungary
| | - Zoltán Sápi
- 1 1st Department of Pathology and Experimental Cancer Research, Semmelweis University, Budapest H-1085, Hungary
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23
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Fang SY, Hu CQ, Liu MN, Tao L, Wang Y, Gong MJ, He Y, He TC, Bi Y. Reversibly immortalized hepatic progenitor cell line containing double suicide genes. Int J Mol Med 2018; 42:1977-1986. [PMID: 30085335 PMCID: PMC6108856 DOI: 10.3892/ijmm.2018.3803] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Accepted: 08/01/2018] [Indexed: 01/14/2023] Open
Abstract
A large number of functional hepatocytes is required for bioartificial liver therapy. Simian virus 40 T-antigen (SV40T) has been previously reported to improve the immortalized proliferation of primary hepatocytes to generate a sufficient number of cells; however, these long-term immortalized hepatocytes may induce further malignant transformation in vivo. In the present study, the SV40T immortalization gene and two suicide genes, herpes simplex virus thymidine kinase (HSV-tk) and cytosine deaminase (CD), were transducted into primary hepatocytes to construct a novel type of Cre/LoxP-mediated reversible immortalized hepatocyte line. Polymerase chain reaction analysis and western blotting confirmed that the SV40T, HSV-tk and CD genes were successfully inserted into hepatic progenitor cells and their expression was controlled by Cre/LoxP recombination. Total removal of SV40T could be achieved via the ganciclovir (GCV)/HSV-tk suicide system. Cells maintained their biosafety in vivo with CD gene expression and 5-fluoro-cytosine (5-FC) induced cell death. Following transplantation into the carbon tetrachloride (CCl4) model group, the majority of cells had survived after 14 days post-implantation and a number of the cells had transported into the liver parenchyma. When compared with the CCl4 model group, the transplanted cells repaired the liver biochemical index and pathological structure markedly. Thus, the present study reports a novel reversible immortalized hepatocyte with double suicide genes, which exhibited the cellular phenotype and recovery function of normal liver cells. This method maximally guaranteed the biological safety of immortalized hepatocytes for in vivo application, providing a reliable, safe and ideal cell material for the artificial liver technique.
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Affiliation(s)
- Shu-Yu Fang
- Department of Pediatric Surgery, Stem Cell Biology and Therapy Laboratory, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Stem Cell Therapy Engineering Technical Center, The Children's Hospital of Chongqing Medical University, Chongqing 400014, P.R. China
| | - Chao-Qun Hu
- Department of Pediatric Surgery, Stem Cell Biology and Therapy Laboratory, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Stem Cell Therapy Engineering Technical Center, The Children's Hospital of Chongqing Medical University, Chongqing 400014, P.R. China
| | - Meng-Nan Liu
- Department of Pediatric Surgery, Stem Cell Biology and Therapy Laboratory, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Stem Cell Therapy Engineering Technical Center, The Children's Hospital of Chongqing Medical University, Chongqing 400014, P.R. China
| | - Li Tao
- Department of Pediatric Surgery, Stem Cell Biology and Therapy Laboratory, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Stem Cell Therapy Engineering Technical Center, The Children's Hospital of Chongqing Medical University, Chongqing 400014, P.R. China
| | - Yi Wang
- Department of Pediatric Surgery, Stem Cell Biology and Therapy Laboratory, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Stem Cell Therapy Engineering Technical Center, The Children's Hospital of Chongqing Medical University, Chongqing 400014, P.R. China
| | - Meng-Jia Gong
- Department of Pediatric Surgery, Stem Cell Biology and Therapy Laboratory, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Stem Cell Therapy Engineering Technical Center, The Children's Hospital of Chongqing Medical University, Chongqing 400014, P.R. China
| | - Yun He
- Department of Pediatric Surgery, Stem Cell Biology and Therapy Laboratory, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Stem Cell Therapy Engineering Technical Center, The Children's Hospital of Chongqing Medical University, Chongqing 400014, P.R. China
| | - Tong-Chuan He
- Department of Pediatric Surgery, Stem Cell Biology and Therapy Laboratory, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Stem Cell Therapy Engineering Technical Center, The Children's Hospital of Chongqing Medical University, Chongqing 400014, P.R. China
| | - Yang Bi
- Department of Pediatric Surgery, Stem Cell Biology and Therapy Laboratory, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Stem Cell Therapy Engineering Technical Center, The Children's Hospital of Chongqing Medical University, Chongqing 400014, P.R. China
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24
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Giunco S, Petrara MR, Zangrossi M, Celeghin A, De Rossi A. Extra-telomeric functions of telomerase in the pathogenesis of Epstein-Barr virus-driven B-cell malignancies and potential therapeutic implications. Infect Agent Cancer 2018; 13:14. [PMID: 29643934 PMCID: PMC5892012 DOI: 10.1186/s13027-018-0186-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Accepted: 03/29/2018] [Indexed: 02/06/2023] Open
Abstract
The Epstein-Barr virus (EBV) is a ubiquitous human γ-herpesvirus causally linked to a broad spectrum of both lymphoid and epithelial malignancies. In order to maintain its persistence in host cells and promote tumorigenesis, EBV must restrict its lytic cycle, which would ultimately lead to cell death, selectively express latent viral proteins, and establish an unlimited proliferative potential. The latter step depends on the maintenance of telomere length provided by telomerase. The viral oncoprotein LMP-1 activates TERT, the catalytic component of telomerase. In addition to its canonical role in stabilizing telomeres, TERT may promote EBV-driven tumorigenesis through extra-telomeric functions. TERT contributes toward preserving EBV latency; in fact, through the NOTCH2/BATF pathway, TERT negatively affects the expression of BZLF1, the master regulator of the EBV lytic cycle. In contrast, TERT inhibition triggers a complete EBV lytic cycle, leading to the death of EBV-infected cells. Interestingly, short-term TERT inhibition causes cell cycle arrest and apoptosis, partly by inducing telomere-independent activation of the ATM/ATR/TP53 pathway. Importantly, TERT inhibition also sensitizes EBV-positive tumor cells to antiviral therapy and enhances the pro-apoptotic effects of chemotherapeutic agents. We provide here an overview on how the extra-telomeric functions of TERT contribute to EBV-driven tumorigenesis. We also discuss the potential therapeutic approach of TERT inhibition in EBV-driven malignancies.
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Affiliation(s)
- Silvia Giunco
- 1Immunology and Molecular Oncology Unit, Istituto Oncologico Veneto (IOV)-IRCCS, Padova, Italy
| | - Maria Raffaella Petrara
- 2Department of Surgery, Oncology and Gastroenterology, Section of Oncology and Immunology, University of Padova, Padova, Italy
| | - Manuela Zangrossi
- 2Department of Surgery, Oncology and Gastroenterology, Section of Oncology and Immunology, University of Padova, Padova, Italy
| | - Andrea Celeghin
- 2Department of Surgery, Oncology and Gastroenterology, Section of Oncology and Immunology, University of Padova, Padova, Italy
| | - Anita De Rossi
- 1Immunology and Molecular Oncology Unit, Istituto Oncologico Veneto (IOV)-IRCCS, Padova, Italy.,2Department of Surgery, Oncology and Gastroenterology, Section of Oncology and Immunology, University of Padova, Padova, Italy
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25
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Identification of novel cell-impermeant fluorescent substrates for testing the function and drug interaction of Organic Anion-Transporting Polypeptides, OATP1B1/1B3 and 2B1. Sci Rep 2018; 8:2630. [PMID: 29422623 PMCID: PMC5805760 DOI: 10.1038/s41598-018-20815-1] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Accepted: 01/19/2018] [Indexed: 12/15/2022] Open
Abstract
Organic Anion-Transporting Polypeptides are multispecific membrane proteins that regulate the passage of crucial endobiotics and drugs across pharmacological barriers. OATP1B1 and OATP1B3 have been described to play a major role in the hepatic uptake of statins, antivirals and various chemotherapeutics; whereas the pharmacological role of the ubiquitously expressed OATP2B1 is less well characterized. According to current industry standards, in vitro testing for susceptibility to OATP1B1 and 1B3 mediated transport is recommended for drug candidates that are eliminated in part via the liver. Here we show that human OATP1B1, 1B3 and 2B1 transport a series of commercially available viability dyes that are generally believed to be impermeable to intact cells. We demonstrate that the intracellular accumulation of Zombie Violet, Live/Dead Green, Cascade Blue and Alexa Fluor 405 is specifically increased by OATPs. Inhibition of Cascade Blue or Alexa Fluor 405 uptake by known OATP substrates/inhibitors yielded IC50 values in agreement with gold-standard radioligand assays. The fluorescence-based assays described in this study provide a new tool for testing OATP1B/2B1 drug interactions.
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26
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Fang J, Wei Y, Teng X, Zhao S, Hua J. Immortalization of canine adipose-derived mesenchymal stem cells and their seminiferous tubule transplantation. J Cell Biochem 2018; 119:3663-3670. [PMID: 29231997 DOI: 10.1002/jcb.26574] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Accepted: 12/05/2017] [Indexed: 01/05/2023]
Abstract
Adipose-derived mesenchymal stem cells (ADSCs) are proven to provide good effects in numerous tissue engineering application and other cell-based therapies. However, the difficulty in the proliferation of ADSCs, known as the "Hayflick limit" in vitro, limits their clinical application. Here, we immortalized canine ADSCs (cADSCs) with SV40 gene and transplanted them into busulfan-induced seminiferous tubules of infertile mice. The proliferation of these immortalized cells was improved significantly. Then, cellular differentiation assays showed that the immortalized cADSCs could differentiate into three-germ-layer cells, osteogenesis, chondrogenesis, adipogenesis phenotypes, and primordial germ cell-like cells (PGCLCs). In addition, the immortalized cADSCs can proliferate in the busulfan-induced seminiferous tubules of infertile mice. These findings confirmed that the immortalized cADSCs maintain the criteria of cADSCs.
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Affiliation(s)
- Jia Fang
- College of Veterinary Medicine, Shaanxi Centre of Stem Cells Engineering & Technology, Northwest A&F University, Yangling, Shaanxi, China
| | - Yudong Wei
- College of Veterinary Medicine, Shaanxi Centre of Stem Cells Engineering & Technology, Northwest A&F University, Yangling, Shaanxi, China
| | - Xin Teng
- College of Veterinary Medicine, Shaanxi Centre of Stem Cells Engineering & Technology, Northwest A&F University, Yangling, Shaanxi, China
| | - Shanting Zhao
- College of Veterinary Medicine, Shaanxi Centre of Stem Cells Engineering & Technology, Northwest A&F University, Yangling, Shaanxi, China
| | - Jinlian Hua
- College of Veterinary Medicine, Shaanxi Centre of Stem Cells Engineering & Technology, Northwest A&F University, Yangling, Shaanxi, China
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27
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First cloned human immortalized adipose derived mesenchymal stem-cell line with chimeric SS18-SSX1 gene (SS-iASC). Cancer Genet 2017; 216-217:52-60. [DOI: 10.1016/j.cancergen.2017.07.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Revised: 07/13/2017] [Accepted: 07/19/2017] [Indexed: 01/02/2023]
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28
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Wei K, Xie Y, Chen T, Fu B, Cui S, Wang Y, Cai G, Chen X. ERK1/2 signaling mediated naringin-induced osteogenic differentiation of immortalized human periodontal ligament stem cells. Biochem Biophys Res Commun 2017; 489:319-325. [DOI: 10.1016/j.bbrc.2017.05.130] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Accepted: 05/23/2017] [Indexed: 02/07/2023]
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29
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Husak Z, Dworzak MN. Chronic stress induces CD99, suppresses autophagy, and affects spontaneous adipogenesis in human bone marrow stromal cells. Stem Cell Res Ther 2017; 8:83. [PMID: 28420430 PMCID: PMC5395812 DOI: 10.1186/s13287-017-0532-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Revised: 02/20/2017] [Accepted: 03/09/2017] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Bone marrow-derived mesenchymal stromal cells (MSCs) are multipotent cells with a high constitutive level of autophagy and low expression of CD99. Under certain conditions, MSCs may develop tumorigenic properties. However, these transformation-induced conditions are largely unknown. Recently, we have identified an association between Hsp70, a main participant in cellular stress response and tumorigenesis, and CD99. Preliminary observations had revealed upregulation of both proteins in stressed long-term cultured MSCs. And so we hypothesized that CD99 is implicated in stress-induced mechanisms of cellular transformation in MSCs. Hence, we investigated the effects of prolonged stress on MSCs and the role of CD99 and autophagy in their survival. METHODS Human telomerase reverse transcriptase (hTERT) overexpressing immortalized MSCs and primary bone marrow stromal cells were used to investigate the influence of long-term serum deprivation and hypoxia on growth and differentiation of MSCs. Cell proliferation and apoptosis were evaluated using flow cytometry, differentiation capabilities of MSCs were assessed by immunohistochemical staining followed by microscopic examination. CD99, Hsp70 expression were analyzed using flow cytometry, western blotting, and reverse transcriptase polymerase chain reaction. Autophagy was explored with specific inhibitors using cell morphology examination and western blotting. RESULTS Chronic stress factors are able to change the morphology of MSCs and to inhibit spontaneous differentiation into adipocyte lineage. Furthermore, CD99 elevation and downregulation of p53 and p21 accompanied defective autophagy, which is usually associated with tumor formation. We found that inhibition of autophagy by chloroquine promoted cell detachment and modulated CD99 expression level whereas incorporation of CD99 recombinant protein into the cells suppressed autophagy. CONCLUSIONS Obtained results provide a model for chronic stress-induced transformation of MSCs via CD99 and may therefore be highly relevant to mesenchymal tumorigenesis.
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Affiliation(s)
- Zvenyslava Husak
- St. Anna Kinderkrebsforschung, Children’s Cancer Research Institute, Zimmermannplatz 10, 1090 Vienna, Austria
| | - Michael N. Dworzak
- St. Anna Kinderkrebsforschung, Children’s Cancer Research Institute, Zimmermannplatz 10, 1090 Vienna, Austria
- St. Anna Kinderspital, Kinderspitalgasse 6, 1090 Vienna, Austria
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In Vitro Characterization of Human Mesenchymal Stem Cells Isolated from Different Tissues with a Potential to Promote Complex Bone Regeneration. Stem Cells Int 2016; 2016:3595941. [PMID: 27999599 PMCID: PMC5143785 DOI: 10.1155/2016/3595941] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Accepted: 10/19/2016] [Indexed: 01/09/2023] Open
Abstract
Bone tissue regeneration is a major, worldwide medical need, and several strategies have been developed to support the regeneration of extensive bone defects, including stem cell based bone grafts. In addition to the application of stem cells with high osteogenic potential, it is important to maintain proper blood flow in a bone graft to avoid inner graft necrosis. Mesenchymal stem cells (MSCs) may form both osteocytes and endothelial cells; therefore we examined the combined in vitro osteogenic and endothelial differentiation capacities of MSCs derived from adipose tissue, Wharton's jelly, and periodontal ligament. Based on a detailed characterization presented here, MSCs isolated from adipose tissue and periodontal ligament may be most appropriate for generating vascularized bone grafts.
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Choi W, Kim E, Yum SY, Lee C, Lee J, Moon J, Ramachandra S, Malaweera BO, Cho J, Kim JS, Kim S, Jang G. Efficient PRNP deletion in bovine genome using gene-editing technologies in bovine cells. Prion 2016. [PMID: 26217959 DOI: 10.1080/19336896.2015.1071459] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Even though prion (encoded by the PRNP gene) diseases like bovine spongiform encephalopathy (BSE) are fatal neurodegenerative diseases in cattle, their study via gene deletion has been limited due to the absence of cell lines or mutant models. In this study, we aim to develop an immortalized fibroblast cell line in which genome-engineering technology can be readily applied to create gene-modified clones for studies. To this end, this study is designed to 1) investigate the induction of primary fibroblasts to immortalization by introducing Bmi-1 and hTert genes; 2) investigate the disruption of the PRNP in those cells; and 3) evaluate the gene expression and embryonic development using knockout (KO) cell lines. Primary cells from a male neonate were immortalized with Bmi-1and hTert. Immortalized cells were cultured for more than 180 days without any changes in their doubling time and morphology. Furthermore, to knockout the PRNP gene, plasmids that encode transcription activator-like effector nuclease (TALEN) pairs were transfected into the cells, and transfected single cells were propagated. Mutated clonal cell lines were confirmed by T7 endonuclease I assay and sequencing. Four knockout cell lines were used for somatic cell nuclear transfer (SCNT), and the resulting embryos were developed to the blastocyst stage. The genes (CSNK2A1, FAM64A, MPG and PRND) were affected after PRNP disruption in immortalized cells. In conclusion, we established immortalized cattle fibroblasts using Bmi-1 and hTert genes, and used TALENs to knockout the PRNP gene in these immortalized cells. The efficient PRNP KO is expected to be a useful technology to develop our understanding of in vitro prion protein functions in cattle.
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Affiliation(s)
- WooJae Choi
- a Laboratory of Theriogenology and Biotechnology; Department of Veterinary Clinical Science ; College of Veterinary Medicine and the Research Institute of Veterinary Science; Seoul National University ; Seoul , Republic of Korea
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A Novel Aspect of Tumorigenesis-BMI1 Functions in Regulating DNA Damage Response. Biomolecules 2015; 5:3396-415. [PMID: 26633535 PMCID: PMC4693283 DOI: 10.3390/biom5043396] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Revised: 10/23/2015] [Accepted: 11/26/2015] [Indexed: 12/27/2022] Open
Abstract
BMI1 plays critical roles in maintaining the self-renewal of hematopoietic, neural, intestinal stem cells, and cancer stem cells (CSCs) for a variety of cancer types. BMI1 promotes cell proliferative life span and epithelial to mesenchymal transition (EMT). Upregulation of BMI1 occurs in multiple cancer types and is associated with poor prognosis. Mechanistically, BMI1 is a subunit of the Polycomb repressive complex 1 (PRC1), and binds the catalytic RING2/RING1b subunit to form a functional E3 ubiquitin ligase. Through mono-ubiquitination of histone H2A at lysine 119 (H2A-K119Ub), BMI1 represses multiple gene loci; among these, the INK4A/ARF locus has been most thoroughly investigated. The locus encodes the p16INK4A and p14/p19ARF tumor suppressors that function in the pRb and p53 pathways, respectively. Its repression contributes to BMI1-derived tumorigenesis. BMI1 also possesses other oncogenic functions, specifically its regulative role in DNA damage response (DDR). In this process, BMI1 ubiquitinates histone H2A and γH2AX, thereby facilitating the repair of double-stranded DNA breaks (DSBs) through stimulating homologous recombination and non-homologous end joining. Additionally, BMI1 compromises DSB-induced checkpoint activation independent of its-associated E3 ubiquitin ligase activity. We review the emerging role of BMI1 in DDR regulation and discuss its impact on BMI1-derived tumorigenesis.
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Giunco S, Rampazzo E, Celeghin A, Petrara MR, De Rossi A. Telomere and Telomerase in Carcinogenesis: Their Role as Prognostic Biomarkers. CURRENT PATHOBIOLOGY REPORTS 2015. [DOI: 10.1007/s40139-015-0087-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Szepesi Á, Matula Z, Szigeti A, Várady G, Szabó G, Uher F, Sarkadi B, Német K. ABCG2 is a selectable marker for enhanced multilineage differentiation potential in periodontal ligament stem cells. Stem Cells Dev 2015; 24:244-52. [PMID: 25101689 DOI: 10.1089/scd.2014.0177] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Periodontal ligament stem cells (PDLSCs) provide an important source for tissue regeneration and may become especially useful in the formation of osteogenic seeds. PDLSCs can be cultured, expanded, and differentiated in vitro; thus, they may be applied in the long-term treatment of the defects in the dental regions. Here we studied numerous potential markers allowing the selection of human PDLSCs with a maximum differentiation potential. We followed the expression of the ATP-binding cassette subfamily G member 2 (ABCG2) membrane transporter protein and isolated ABCG2-expressing cells by using a monoclonal antibody, recognizing the transporter at the cell surface in intact cells. The expression of the ABCG2 protein, corresponding to the so-called side-population phenotype in various tissue-derived stem cells, was found to be a useful marker for the selection of PDLSCs with enhanced osteogenic, chondrogenic, and adipogenic differentiation. These findings may have important applications in achieving efficient dental tissue regeneration by using stem cells from extracted teeth.
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Affiliation(s)
- Áron Szepesi
- 1 Research Centre for Natural Sciences, Hungarian Academy of Sciences , Budapest, Hungary
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Wang M, Zhang CJ, Xu F, Zhao LQ. Clinical significance of expression of Bmi-1 and Mina53 in colorectal carcinoma. Shijie Huaren Xiaohua Zazhi 2015; 23:1420-1425. [DOI: 10.11569/wcjd.v23.i9.1420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the clinicopathological significance of expression of B-cell-specific moloney murine leukemia virus insertion site 1 (Bmi-1) and myc-induced nuclear antigen with a molecular mass of 53 kDa (Mina53) in colorectal carcinoma.
METHODS: The expression of Bmi-1 and Mina53 proteins was detected by immunohistochemistry in 56 colorectal cancer samples and matched tumor-adjacent normal tissue samples. The correlation between the expression of these proteins and the clinicopathologic features of colorectal carcinoma was analyzed.
RESULTS: The positive rates of Bmi-1 expression and Mina53 in colorectal cancer were significantly higher than those in matched tumor-adjacent normal tissue (80.4% vs 35.7%, 73.2% vs 19.6%, χ2 = 22.913, 32.308, P < 0.05 for both). Expression of Bmi-1 and Mina53 was significantly associated with tumor differentiation, lymph node metastasis and tumor infiltration depth in colorectal carcinoma (P < 0.05 for all), but not with age or gender (P > 0.05 for both). A positive correlation was noted between the expression of Bmi-1 and that of Mina53 in colorectal carcinoma (r = 0.296, P < 0.05).
CONCLUSION: High expression of Bmi-1 and Mina53 proteins may participate in the occurrence, progression and prognosis of colorectal carcinoma. Combined detection of the expression of these proteins is helpful to the diagnosis and evaluation of the prognosis of colorectal carcinoma.
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Koszarska M, Kucsma N, Kiss K, Varady G, Gera M, Antalffy G, Andrikovics H, Tordai A, Studzian M, Strapagiel D, Pulaski L, Tani Y, Sarkadi B, Szakacs G. Screening the expression of ABCB6 in erythrocytes reveals an unexpectedly high frequency of Lan mutations in healthy individuals. PLoS One 2014; 9:e111590. [PMID: 25360778 PMCID: PMC4216114 DOI: 10.1371/journal.pone.0111590] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2014] [Accepted: 09/26/2014] [Indexed: 01/20/2023] Open
Abstract
Lan is a high-incidence blood group antigen expressed in more than 99.9% of the population. Identification of the human ABC transporter ABCB6 as the molecular basis of Lan has opened the way for studies assessing the relation of ABCB6 function and expression to health and disease. To date, 34 ABCB6 sequence variants have been described in association with reduced ABCB6 expression based on the genotyping of stored blood showing weak or no reactivity with anti-Lan antibodies. In the present study we examined the red blood cell (RBC) surface expression of ABCB6 by quantitative flow cytometry in a cohort of 47 healthy individuals. Sequencing of the entire coding region of the ABCB6 gene in low RBC ABCB6 expressors identified a new allele (IVS9+1G>A, affecting a putative splice site at the boundary of exon 9) and two nonsynonymous SNPs listed in the SNP database (R192Q (rs150221689) and G588 S (rs145526996)). The R192Q mutation showed co-segregation with reduced RBC ABCB6 expression in a family, and we found the G588 S mutation in a compound heterozygous individual with undetectable ABCB6 expression, suggesting that both mutations result in weak or no expression of ABCB6 on RBCs. Analysis of the intracellular expression pattern in HeLa cells by confocal microscopy indicated that these mutations do not compromise overall expression or the endolysosomal localization of ABCB6. Genotyping of two large cohorts, containing 235 and 1039 unrelated volunteers, confirmed the high allele frequency of Lan-mutations. Our results suggest that genetic variants linked to lower or absent cell surface expression of ABCB6/Langereis may be more common than previously thought.
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Affiliation(s)
| | - Nora Kucsma
- Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Budapest, Hungary
| | - Katalin Kiss
- Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Budapest, Hungary
| | - Gyorgy Varady
- Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Budapest, Hungary
| | - Melinda Gera
- Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Budapest, Hungary
| | - Geza Antalffy
- Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Budapest, Hungary
| | | | - Attila Tordai
- Hungarian National Blood Transfusion Service, Budapest, Hungary
| | - Maciej Studzian
- Department of Molecular Biophysics, University of Lodz, Lodz, Poland
| | - Dominik Strapagiel
- Biobank Lab, Department of Molecular Biophysics, University of Lodz, Lodz, Poland
| | - Lukasz Pulaski
- Department of Molecular Biophysics, University of Lodz, Lodz, Poland
| | - Yoshihiko Tani
- Japanese Red Cross Kinki Block Blood Center, Osaka, Japan
| | - Balazs Sarkadi
- Hungarian National Blood Transfusion Service, Budapest, Hungary
- Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Budapest, Hungary
- Molecular Biophysics Research Group of the Hungarian Academy of Sciences, Semmelweis University, Budapest, Hungary
| | - Gergely Szakacs
- Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Budapest, Hungary
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Rinaldi S, Maioli M, Pigliaru G, Castagna A, Santaniello S, Basoli V, Fontani V, Ventura C. Stem cell senescence. Effects of REAC technology on telomerase-independent and telomerase-dependent pathways. Sci Rep 2014; 4:6373. [PMID: 25224681 PMCID: PMC4165271 DOI: 10.1038/srep06373] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Accepted: 08/15/2014] [Indexed: 12/29/2022] Open
Abstract
Decline in the gene expression of senescence repressor Bmi1, and telomerase, together with telomere shortening, underlay senescence of stem cells cultured for multiple passages. Here, we investigated whether the impairment of senescence preventing mechanisms can be efficiently counteracted by exposure of human adipose-derived stem cells to radio electric asymmetrically conveyed fields by an innovative technology, named Radio Electric Asymmetric Conveyer (REAC). Due to REAC exposure, the number of stem cells positively stained for senescence associated β-galactosidase was significantly reduced along multiple culturing passages. After a 90-day culture, REAC-treated cells exhibited significantly higher transcription of Bmi1 and enhanced expression of other stem cell pluripotency genes and related proteins, compared to unexposed cells. Transcription of the catalytic telomerase subunit (TERT) was also increased in REAC-treated cells at all passages. Moreover, while telomere shortening occurred at early passages in both REAC-treated and untreated cells, a significant rescue of telomere length could be observed at late passages only in REAC-exposed cells. Thus, REAC-asymmetrically conveyed radio electric fields acted on a gene and protein expression program of both telomerase-independent and telomerase-dependent patterning to optimize stem cell ability to cope with senescence progression.
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Affiliation(s)
- S Rinaldi
- 1] Department of Regenerative Medicine, Rinaldi Fontani Institute, Viale Belfiore 43, 50144 Florence, Italy [2] Department of Anti Aging Medicine, Rinaldi Fontani Institute, Viale Belfiore 43, 50144 Florence, Italy [3] Research Department, Rinaldi Fontani Foundation NPO, Viale Belfiore 43, 50144 Florence, Italy [4]
| | - M Maioli
- 1] Department of Biomedical Sciences, University of Sassari, Viale San Pietro 43/B, 07100 Sassari, Italy [2] Stem Wave Institute for Tissue Healing (SWITH), Gruppo Villa Maria and Ettore Sansavini Health Science Foundation NPO, via Provinciale per Cotignola 9, 48022 Lugo (Ravenna), Italy [3] National Institute of Biostructures and Biosystems at the Department of Experimental, Diagnostic and Specialty Medicine, S. Orsola - Malpighi Hospital, University of Bologna, Via Massarenti 9, 40138 Bologna, Italy [4]
| | - G Pigliaru
- 1] Department of Biomedical Sciences, University of Sassari, Viale San Pietro 43/B, 07100 Sassari, Italy [2] Stem Wave Institute for Tissue Healing (SWITH), Gruppo Villa Maria and Ettore Sansavini Health Science Foundation NPO, via Provinciale per Cotignola 9, 48022 Lugo (Ravenna), Italy
| | - A Castagna
- 1] Department of Regenerative Medicine, Rinaldi Fontani Institute, Viale Belfiore 43, 50144 Florence, Italy [2] Department of Anti Aging Medicine, Rinaldi Fontani Institute, Viale Belfiore 43, 50144 Florence, Italy [3] Research Department, Rinaldi Fontani Foundation NPO, Viale Belfiore 43, 50144 Florence, Italy
| | - S Santaniello
- 1] Department of Biomedical Sciences, University of Sassari, Viale San Pietro 43/B, 07100 Sassari, Italy [2] Stem Wave Institute for Tissue Healing (SWITH), Gruppo Villa Maria and Ettore Sansavini Health Science Foundation NPO, via Provinciale per Cotignola 9, 48022 Lugo (Ravenna), Italy
| | - V Basoli
- Department of Biomedical Sciences, University of Sassari, Viale San Pietro 43/B, 07100 Sassari, Italy
| | - V Fontani
- 1] Department of Regenerative Medicine, Rinaldi Fontani Institute, Viale Belfiore 43, 50144 Florence, Italy [2] Department of Anti Aging Medicine, Rinaldi Fontani Institute, Viale Belfiore 43, 50144 Florence, Italy [3] Research Department, Rinaldi Fontani Foundation NPO, Viale Belfiore 43, 50144 Florence, Italy
| | - C Ventura
- 1] Stem Wave Institute for Tissue Healing (SWITH), Gruppo Villa Maria and Ettore Sansavini Health Science Foundation NPO, via Provinciale per Cotignola 9, 48022 Lugo (Ravenna), Italy [2] National Institute of Biostructures and Biosystems at the Department of Experimental, Diagnostic and Specialty Medicine, S. Orsola - Malpighi Hospital, University of Bologna, Via Massarenti 9, 40138 Bologna, Italy
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Qin Y, Guo H, Tang B, Yang SM. The non-reverse transcriptase activity of the human telomerase reverse transcriptase promotes tumor progression (review). Int J Oncol 2014; 45:525-31. [PMID: 24888567 DOI: 10.3892/ijo.2014.2470] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2014] [Accepted: 04/17/2014] [Indexed: 11/05/2022] Open
Abstract
In human cancer, high expression of telomerase is correlated with tumor aggressiveness and metastatic potential. Human telomerase reverse transcriptase (hTERT), which regulates telomere length, can promote tumor development. Most research on hTERT has been focused on its crucial function of telomere maintenance. However, there are many phenomena that cannot be explained by its reverse transcriptase activity. Accumulating evidence suggests that hTERT has functions independent of its protective function at the telomere ends, such as increasing the anti-apoptotic capacity of cells, enhancing DNA repair, maintaining stem cells and regulating gene expression. This review will provide an update on the non-reverse transcriptase activity of hTERT and its contribution to tumor formation, metastasis and cancer stem cell maintenance. Repression of the non-reverse transcriptase activity of hTERT may be a new strategy for tumor therapy.
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Affiliation(s)
- Yong Qin
- Department of Gastroenterology, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, P.R. China
| | - Hong Guo
- Department of Gastroenterology, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, P.R. China
| | - Bo Tang
- Department of Gastroenterology, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, P.R. China
| | - Shi-Ming Yang
- Department of Gastroenterology, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, P.R. China
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Balducci L, Blasi A, Saldarelli M, Soleti A, Pessina A, Bonomi A, Coccè V, Dossena M, Tosetti V, Ceserani V, Navone SE, Falchetti ML, Parati EA, Alessandri G. Immortalization of human adipose-derived stromal cells: production of cell lines with high growth rate, mesenchymal marker expression and capability to secrete high levels of angiogenic factors. Stem Cell Res Ther 2014; 5:63. [PMID: 24887516 PMCID: PMC4055112 DOI: 10.1186/scrt452] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2013] [Revised: 01/28/2014] [Accepted: 04/24/2014] [Indexed: 12/20/2022] Open
Abstract
INTRODUCTION Human adipose-derived stromal cells (hASCs), due to their relative feasibility of isolation and ability to secrete large amounts of angiogenic factors, are being evaluated for regenerative medicine. However, their limited culture life span may represent an obstacle for both preclinical investigation and therapeutic use. To overcome this problem, hASCs immortalization was performed in order to obtain cells with in vitro prolonged life span but still maintain their mesenchymal marker expression and ability to secrete angiogenic factors. METHODS hASCs were transduced with the human telomerase reverse transcriptase (hTERT) gene alone or in combination with either SV-40 or HPV E6/E7 genes. Mesenchymal marker expression on immortalized hASCs lines was confirmed by flow cytometry (FC), differentiation potential was evaluated by immunocytochemistry and ELISA kits were used for evaluation of angiogenic factors. Green fluorescent protein (GFP) gene transduction was used to obtain fluorescent cells. RESULTS We found that hTERT alone failed to immortalize hASCs (hASCs-T), while hTERT/SV40 (hASCs-TS) or hTERT/HPV E6/E7 (hASCs-TE) co-transductions successfully immortalized cells. Both hASCs-TS and hASCs-TE were cultured for up to one year with a population doubling level (PDL) up to 100. Comparative studies between parental not transduced (hASCs-M) and immortalized cell lines showed that both hASCs-TS and hASCs-TE maintained a mesenchymal phenotypic profile, whereas differentiation properties were reduced particularly in hASCs-TS. Interestingly, hASCs-TS and hASCs-TE showed a capability to secrete significant amount of HGF and VEGF. Furthermore, hASCs-TS and hASCs-TE did not show tumorigenic properties in vitro although some chromosomal aberrations were detected. Finally, hASCs-TS and hASCs-TE lines were stably fluorescent upon transduction with the GFP gene. CONCLUSIONS Here we demonstrated, for the first time, that hASCs, upon immortalization, maintain a strong capacity to secrete potent angiogenic molecules. By combining hASCs immortalization and their paracrine characteristics, we have developed a "hybridoma-like model" of hASCs that could have potential applications for discovering and producing molecules to use in regenerative medicine (process scale-up).
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Affiliation(s)
- Luigi Balducci
- Medestea Research and Production Laboratories, Consorzio CARSO, Bari, Italy
| | - Antonella Blasi
- Medestea Research and Production Laboratories, Consorzio CARSO, Bari, Italy
| | | | - Antonio Soleti
- Medestea Research and Production Laboratories, Consorzio CARSO, Bari, Italy
| | - Augusto Pessina
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, Italy
| | - Arianna Bonomi
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, Italy
| | - Valentina Coccè
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, Italy
| | - Marta Dossena
- Department of Cerebrovascular Diseases, Fondazione IRCCS Neurological Institute Carlo Besta, Milan, Italy
| | - Valentina Tosetti
- Department of Cerebrovascular Diseases, Fondazione IRCCS Neurological Institute Carlo Besta, Milan, Italy
| | - Valentina Ceserani
- Department of Cerebrovascular Diseases, Fondazione IRCCS Neurological Institute Carlo Besta, Milan, Italy
| | - Stefania Elena Navone
- Laboratory of Experimental Neurosurgery and Cell Therapy, Neurosurgery Unit, Fondazione IRCCS Ca’Granda Ospedale Maggiore Policlinico, Milan, Italy
| | | | - Eugenio Agostino Parati
- Department of Cerebrovascular Diseases, Fondazione IRCCS Neurological Institute Carlo Besta, Milan, Italy
| | - Giulio Alessandri
- Department of Cerebrovascular Diseases, Fondazione IRCCS Neurological Institute Carlo Besta, Milan, Italy
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Kwatra D, Subramaniam D, Ramamoorthy P, Standing D, Moran E, Velayutham R, Mitra A, Umar S, Anant S. Methanolic extracts of bitter melon inhibit colon cancer stem cells by affecting energy homeostasis and autophagy. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE : ECAM 2013; 2013:702869. [PMID: 23533514 PMCID: PMC3606719 DOI: 10.1155/2013/702869] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/18/2012] [Revised: 01/21/2013] [Accepted: 01/29/2013] [Indexed: 01/24/2023]
Abstract
Bitter melon fruit is recommended in ancient Indian and Chinese medicine for prevention/treatment of diabetes. However its effects on cancer progression are not well understood. Here, we have determined the efficacy of methanolic extracts of bitter melon on colon cancer stem and progenitor cells. Both, whole fruit (BMW) and skin (BMSk) extracts showed significant inhibition of cell proliferation and colony formation, with BMW showing greater efficacy. In addition, the cells were arrested at the S phase of cell cycle. Moreover, BMW induced the cleavage of LC3B but not caspase 3/7, suggesting that the cells were undergoing autophagy and not apoptosis. Further confirmation of autophagy was obtained when western blots showed reduced Bcl-2 and increased Beclin-1, Atg 7 and 12 upon BMW treatment. BMW reduced cellular ATP levels coupled with activation of AMP activated protein kinase; on the other hand, exogenous additions of ATP lead to revival of cell proliferation. Finally, BMW treatment results in a dose-dependent reduction in the number and size of colonospheres. The extracts also decreased the expression of DCLK1 and Lgr5, markers of quiescent, and activated stem cells. Taken together, these results suggest that the extracts of bitter melon can be an effective preventive/therapeutic agent for colon cancer.
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Affiliation(s)
- Deep Kwatra
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center, 3901 Rainbow Boulevard MS 3040, Kansas City, KS 66160, USA
| | - Dharmalingam Subramaniam
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center, 3901 Rainbow Boulevard MS 3040, Kansas City, KS 66160, USA
- University of Kansas Cancer Center, University of Kansas Medical Center, 3901 Rainbow Boulevard MS 3040, Kansas City, KS 66160, USA
| | - Prabhu Ramamoorthy
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center, 3901 Rainbow Boulevard MS 3040, Kansas City, KS 66160, USA
- University of Kansas Cancer Center, University of Kansas Medical Center, 3901 Rainbow Boulevard MS 3040, Kansas City, KS 66160, USA
| | - David Standing
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center, 3901 Rainbow Boulevard MS 3040, Kansas City, KS 66160, USA
- University of Kansas Cancer Center, University of Kansas Medical Center, 3901 Rainbow Boulevard MS 3040, Kansas City, KS 66160, USA
| | - Elizabeth Moran
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center, 3901 Rainbow Boulevard MS 3040, Kansas City, KS 66160, USA
| | | | - Ashim Mitra
- Department of Pharmaceutical Sciences, University of Missouri at Kansas City, Kansas City, MO 64108, USA
| | - Shahid Umar
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center, 3901 Rainbow Boulevard MS 3040, Kansas City, KS 66160, USA
- University of Kansas Cancer Center, University of Kansas Medical Center, 3901 Rainbow Boulevard MS 3040, Kansas City, KS 66160, USA
| | - Shrikant Anant
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center, 3901 Rainbow Boulevard MS 3040, Kansas City, KS 66160, USA
- University of Kansas Cancer Center, University of Kansas Medical Center, 3901 Rainbow Boulevard MS 3040, Kansas City, KS 66160, USA
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