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Chiew MY, Wang E, Lan KC, Lin YR, Hsueh YH, Tu YK, Liu CF, Chen PC, Lu HE, Chen WL. Improving iPSC Differentiation Using a Nanodot Platform. ACS APPLIED MATERIALS & INTERFACES 2024; 16:36030-36046. [PMID: 38951110 DOI: 10.1021/acsami.4c04451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/03/2024]
Abstract
Differentiation of induced pluripotent stem cells (iPSCs) is an extremely complex process that has proven difficult to study. In this research, we utilized nanotopography to elucidate details regarding iPSC differentiation by developing a nanodot platform consisting of nanodot arrays of increasing diameter. Subjecting iPSCs cultured on the nanodot platform to a cardiomyocyte (CM) differentiation protocol revealed several significant gene expression profiles that were associated with poor differentiation. The observed expression trends were used to select existing small-molecule drugs capable of modulating differentiation efficiency. BRD K98 was repurposed to inhibit CM differentiation, while iPSCs treated with NSC-663284, carmofur, and KPT-330 all exhibited significant increases in not only CM marker expression but also spontaneous beating, suggesting improved CM differentiation. In addition, quantitative polymerase chain reaction was performed to determine the gene regulation responsible for modulating differentiation efficiency. Multiple genes involved in extracellular matrix remodeling were correlated with a CM differentiation efficiency, while genes involved in the cell cycle exhibited contrasting expression trends that warrant further studies. The results suggest that expression profiles determined via short time-series expression miner analysis of nanodot-cultured iPSC differentiation can not only reveal drugs capable of enhancing differentiation efficiency but also highlight crucial sets of genes related to processes such as extracellular matrix remodeling and the cell cycle that can be targeted for further investigation. Our findings confirm that the nanodot platform can be used to reveal complex mechanisms behind iPSC differentiation and could be an indispensable tool for optimizing iPSC technology for clinical applications.
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Affiliation(s)
- Men Yee Chiew
- Center for Regenerative Medicine and Cellular Therapy, National Yang Ming Chiao Tung University, Hsinchu, 300, Taiwan, ROC
- Department of Biological Science and Technology, National Yang Ming Chiao Tung University, Hsinchu 300, Taiwan, ROC
| | - Erick Wang
- Department of Biological Science and Technology, National Yang Ming Chiao Tung University, Hsinchu 300, Taiwan, ROC
- College of Biological Science and Technology Industrial Ph. D. Program, National Yang Ming Chiao Tung University, Hsinchu 300, Taiwan, ROC
| | - Kuan-Chun Lan
- Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto 606-8397, Japan
| | - Yan-Ren Lin
- Department of Emergency and Critical Care Medicine, Changhua Christian Hospital, Changhua 500, Taiwan, ROC
- Department of Post Baccalaureate Medicine, College of Medicine, National Chung Hsing University, Taichung 402, Taiwan, ROC
- School of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan, ROC
- School of Medicine, Chung Shan Medical University, Taichung 402, Taiwan, ROC
| | - Yu-Huan Hsueh
- College of Biological Science and Technology, National Yang Ming Chiao Tung University, Hsinchu 300, Taiwan, ROC
- Department of Orthopedic Surgery, E-Da Hospital, I-Shou University, Kaohsiung 824, Taiwan
| | - Yuan-Kun Tu
- Department of Orthopedic Surgery, E-Da Hospital, I-Shou University, Kaohsiung 824, Taiwan
| | - Chu-Feng Liu
- Emergency Medicine Department, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, 833, Taiwan, ROC
- Ph. D. Degree Program of Biomedical Science and Engineering, National Yang Ming Chiao Tung University, Hsinchu 300, Taiwan, ROC
| | - Po-Chun Chen
- Institute of Materials Science and Engineering, National Taipei University of Technology, Taipei 106, Taiwan, ROC
| | - Huai-En Lu
- Center for Regenerative Medicine and Cellular Therapy, National Yang Ming Chiao Tung University, Hsinchu, 300, Taiwan, ROC
- Institute of Biochemistry and Molecular Biology, National Yang Ming Chiao Tung University, Hsinchu 300, Taiwan, ROC
- Bioresource Collection and Research Center, Food Industry Research and Development Institute, Hsinchu City 300, Taiwan, ROC
| | - Wen Liang Chen
- Center for Regenerative Medicine and Cellular Therapy, National Yang Ming Chiao Tung University, Hsinchu, 300, Taiwan, ROC
- Department of Biological Science and Technology, National Yang Ming Chiao Tung University, Hsinchu 300, Taiwan, ROC
- College of Biological Science and Technology Industrial Ph. D. Program, National Yang Ming Chiao Tung University, Hsinchu 300, Taiwan, ROC
- Bioresource Collection and Research Center, Food Industry Research and Development Institute, Hsinchu City 300, Taiwan, ROC
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2
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Engelhard S, Estruch M, Qin S, Engelhard CA, Rodriguez-Gonzalez FG, Drilsvik M, Martin-Gonzalez J, Lu JW, Bryder D, Nerlov C, Weischenfeldt J, Reckzeh K, Theilgaard-Mönch K. Endomucin marks quiescent long-term multi-lineage repopulating hematopoietic stem cells and is essential for their transendothelial migration. Cell Rep 2024; 43:114475. [PMID: 38996072 DOI: 10.1016/j.celrep.2024.114475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 02/20/2024] [Accepted: 06/24/2024] [Indexed: 07/14/2024] Open
Abstract
Endomucin (EMCN) currently represents the only hematopoietic stem cell (HSC) marker expressed by both murine and human HSCs. Here, we report that EMCN+ long-term repopulating HSCs (LT-HSCs; CD150+CD48-LSK) have a higher long-term multi-lineage repopulating capacity compared to EMCN- LT-HSCs. Cell cycle analyses and transcriptional profiling demonstrated that EMCN+ LT-HSCs were more quiescent compared to EMCN- LT-HSCs. Emcn-/- and Emcn+/+ mice displayed comparable steady-state hematopoiesis, as well as frequencies, transcriptional programs, and long-term multi-lineage repopulating capacity of their LT-HSCs. Complementary functional analyses further revealed increased cell cycle entry upon treatment with 5-fluorouracil and reduced granulocyte colony-stimulating factor (GCSF) mobilization of Emcn-/- LT-HSCs, demonstrating that EMCN expression by LT-HSCs associates with quiescence in response to hematopoietic stress and is indispensable for effective LT-HSC mobilization. Transplantation of wild-type bone marrow cells into Emcn-/- or Emcn+/+ recipients demonstrated that EMCN is essential for endothelial cell-dependent maintenance/self-renewal of the LT-HSC pool and sustained blood cell production post-transplant.
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Affiliation(s)
- Sophia Engelhard
- Biotech Research and Innovation Center, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark; The Finsen Laboratory, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark; Novo Nordisk Foundation Center for Basic Metabolic Research, University of Copenhagen, Copenhagen, Denmark
| | - Montserrat Estruch
- Biotech Research and Innovation Center, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark; The Finsen Laboratory, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Shuyu Qin
- Biotech Research and Innovation Center, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark; The Finsen Laboratory, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Christoph A Engelhard
- Center for Physical Activity Research, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark; Department for Biochemistry and Molecular Biology (BMB), University of Southern Denmark, Odense, Denmark
| | - Francisco G Rodriguez-Gonzalez
- Biotech Research and Innovation Center, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark; The Finsen Laboratory, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Martine Drilsvik
- Biotech Research and Innovation Center, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark; The Finsen Laboratory, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Javier Martin-Gonzalez
- Core Facility for Transgenic Mice, Department of Experimental Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Jeng-Wei Lu
- Biotech Research and Innovation Center, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark; The Finsen Laboratory, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - David Bryder
- Division of Molecular Hematology, Lund Stem Cell Center, Department of Laboratory Medicine, Lund University, Lund, Sweden
| | - Claus Nerlov
- MRC Molecular Haematology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Headington, UK
| | - Joachim Weischenfeldt
- Biotech Research and Innovation Center, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark; The Finsen Laboratory, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Kristian Reckzeh
- Biotech Research and Innovation Center, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark; The Finsen Laboratory, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark; Symphogen, Ballerup, Denmark.
| | - Kim Theilgaard-Mönch
- Biotech Research and Innovation Center, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark; The Finsen Laboratory, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark; Department of Hematology, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark.
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3
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Maltsev DI, Podgorny OV. Identification of De Novo Dividing Stem Cells. Methods Mol Biol 2024. [PMID: 38967913 DOI: 10.1007/7651_2024_560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/06/2024]
Abstract
The ability to alternate between quiescent and proliferating states is a remarkable feature of many types of somatic stem cells. The balance between quiescent and proliferating states is vital for maintenance of stem cells over the lifespan, and its disturbance may lead to premature depletion of the stem cell pool and loss of the tissue regenerative or renewal capacity at later stages of life. The question on how this balance is regulated is of critical importance in stem cell research and biology of aging. Assessment of the balance between quiescent and proliferating states has remained challenged until recently due to the lack of approaches for robust determination of the rate at which stem cells exit reversible cell cycle arrest. Here, we propose a simple method for detection of those stem cells that have entered the division cycle after a prolonged period of quiescence.The method combines cumulative and pulse labeling with thymidine analogues 5-bromo-2'-deoxyuridine (BrdU) and 5-ethynyl-2'-deoxyuridine (EdU). In the discussed labeling scheme, cells that have incorporated only the second label, EdU, are de novo dividing cells. The suggested double labeling method provides quantitative assessment of the rate at which stem cells exit the quiescent state and allows the fates of de novo dividing stem cells to be traced.
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Affiliation(s)
- Dmitry I Maltsev
- Pirogov Russian National Research Medical University, Moscow, Russia
- Federal Center of Brain Research and Neurotechnologies, Federal Medical Biological Agency, Moscow, Russia
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
| | - Oleg V Podgorny
- Pirogov Russian National Research Medical University, Moscow, Russia
- Federal Center of Brain Research and Neurotechnologies, Federal Medical Biological Agency, Moscow, Russia
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
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Lu Z, Wang Y, Assumpção ALFV, Liu P, Kopp A, Saka S, Mcilwain SJ, Viny AD, Brand M, Pan X. Yin Yang 1 regulates cohesin complex protein SMC3 in mouse hematopoietic stem cells. Blood Adv 2024; 8:3076-3091. [PMID: 38531064 PMCID: PMC11222949 DOI: 10.1182/bloodadvances.2023011411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 02/16/2024] [Accepted: 02/26/2024] [Indexed: 03/28/2024] Open
Abstract
ABSTRACT Yin Yang 1 (YY1) and structural maintenance of chromosomes 3 (SMC3) are 2 critical chromatin structural factors that mediate long-distance enhancer-promoter interactions and promote developmentally regulated changes in chromatin architecture in hematopoietic stem/progenitor cells (HSPCs). Although YY1 has critical functions in promoting hematopoietic stem cell (HSC) self-renewal and maintaining HSC quiescence, SMC3 is required for proper myeloid lineage differentiation. However, many questions remain unanswered regarding how YY1 and SMC3 interact with each other and affect hematopoiesis. We found that YY1 physically interacts with SMC3 and cooccupies with SMC3 at a large cohort of promoters genome wide, and YY1 deficiency deregulates the genetic network governing cell metabolism. YY1 occupies the Smc3 promoter and represses SMC3 expression in HSPCs. Although deletion of 1 Smc3 allele partially restores HSC numbers and quiescence in YY1 knockout mice, Yy1-/-Smc3+/- HSCs fail to reconstitute blood after bone marrow transplant. YY1 regulates HSC metabolic pathways and maintains proper intracellular reactive oxygen species levels in HSCs, and this regulation is independent of the YY1-SMC3 axis. Our results establish a distinct YY1-SMC3 axis and its impact on HSC quiescence and metabolism.
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Affiliation(s)
- Zhanping Lu
- Department of Medical Sciences, School of Veterinary Medicine, University of Wisconsin, Madison, WI
- Carbone Cancer Center, University of Wisconsin, Madison, WI
- Wisconsin Blood Cancer Research Institute, University of Wisconsin, Madison, WI
| | - Yinghua Wang
- Department of Medical Sciences, School of Veterinary Medicine, University of Wisconsin, Madison, WI
- Carbone Cancer Center, University of Wisconsin, Madison, WI
- Wisconsin Blood Cancer Research Institute, University of Wisconsin, Madison, WI
| | - Anna L. F. V. Assumpção
- Department of Medical Sciences, School of Veterinary Medicine, University of Wisconsin, Madison, WI
- Carbone Cancer Center, University of Wisconsin, Madison, WI
- Wisconsin Blood Cancer Research Institute, University of Wisconsin, Madison, WI
| | - Peng Liu
- Carbone Cancer Center, University of Wisconsin, Madison, WI
- Department of Biostatistics and Medical Informatics, University of Wisconsin School of Medicine and Public Health, Madison, WI
| | - Audrey Kopp
- Wisconsin Blood Cancer Research Institute, University of Wisconsin, Madison, WI
- Department of Cell and Regenerative Biology, University of Wisconsin School of Medicine and Public Health, Madison, WI
| | - Sahitya Saka
- Department of Medical Sciences, School of Veterinary Medicine, University of Wisconsin, Madison, WI
- Carbone Cancer Center, University of Wisconsin, Madison, WI
- Wisconsin Blood Cancer Research Institute, University of Wisconsin, Madison, WI
| | - Sean J. Mcilwain
- Carbone Cancer Center, University of Wisconsin, Madison, WI
- Department of Biostatistics and Medical Informatics, University of Wisconsin School of Medicine and Public Health, Madison, WI
| | - Aaron D. Viny
- Division of Hematology & Oncology, Department of Medicine, Columbia University Irving Medical Center, New York, NY
- Columbia Stem Cell Initiative, Columbia University Irving Medical Center, New York, NY
- Department of Genetics & Development, Columbia University Irving Medical Center, New York, NY
| | - Marjorie Brand
- Wisconsin Blood Cancer Research Institute, University of Wisconsin, Madison, WI
- Department of Cell and Regenerative Biology, University of Wisconsin School of Medicine and Public Health, Madison, WI
| | - Xuan Pan
- Department of Medical Sciences, School of Veterinary Medicine, University of Wisconsin, Madison, WI
- Carbone Cancer Center, University of Wisconsin, Madison, WI
- Wisconsin Blood Cancer Research Institute, University of Wisconsin, Madison, WI
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5
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Kwon M, Kim BS, Yoon S, Oh SO, Lee D. Hematopoietic Stem Cells and Their Niche in Bone Marrow. Int J Mol Sci 2024; 25:6837. [PMID: 38999948 PMCID: PMC11241602 DOI: 10.3390/ijms25136837] [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: 05/09/2024] [Revised: 06/18/2024] [Accepted: 06/19/2024] [Indexed: 07/14/2024] Open
Abstract
Extensive research has explored the functional correlation between stem cells and progenitor cells, particularly in blood. Hematopoietic stem cells (HSCs) can self-renew and regenerate tissues within the bone marrow, while stromal cells regulate tissue function. Recent studies have validated the role of mammalian stem cells within specific environments, providing initial empirical proof of this functional phenomenon. The interaction between bone and blood has always been vital to the function of the human body. It was initially proposed that during evolution, mammalian stem cells formed a complex relationship with the surrounding microenvironment, known as the niche. Researchers are currently debating the significance of molecular-level data to identify individual stromal cell types due to incomplete stromal cell mapping. Obtaining these data can help determine the specific activities of HSCs in bone marrow. This review summarizes key topics from previous studies on HSCs and their environment, discussing current and developing concepts related to HSCs and their niche in the bone marrow.
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Affiliation(s)
- Munju Kwon
- Department of Convergence Medicine, School of Medicine, Pusan National University, Yangsan 50612, Republic of Korea
| | - Byoung Soo Kim
- School of Biomedical Convergence Engineering, Pusan National University, Yangsan 50612, Republic of Korea
| | - Sik Yoon
- Department of Anatomy, School of Medicine, Pusan National University, Yangsan 50612, Republic of Korea
| | - Sae-Ock Oh
- Department of Anatomy, School of Medicine, Pusan National University, Yangsan 50612, Republic of Korea
| | - Dongjun Lee
- Department of Convergence Medicine, School of Medicine, Pusan National University, Yangsan 50612, Republic of Korea
- Transplantation Research Center, Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan 50612, Republic of Korea
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6
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Song W, Liu X, Huang K, Qi J, He Y. Regulatory Role of Meox1 in Muscle Growth of Sebastes schlegelii. Int J Mol Sci 2024; 25:4871. [PMID: 38732090 PMCID: PMC11084361 DOI: 10.3390/ijms25094871] [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: 04/06/2024] [Revised: 04/27/2024] [Accepted: 04/28/2024] [Indexed: 05/13/2024] Open
Abstract
Meox1 is a critical transcription factor that plays a pivotal role in embryogenesis and muscle development. It has been established as a marker gene for growth-specific muscle stem cells in zebrafish. In this study, we identified the SsMeox1 gene in a large teleost fish, Sebastes schlegelii. Through in situ hybridization and histological analysis, we discovered that SsMeox1 can be employed as a specific marker of growth-specific muscle stem cells, which originate from the somite stage and are primarily situated in the external cell layer (ECL) and myosepta, with a minor population distributed among muscle fibers. The knockdown of SsMeox1 resulted in a significant increase in Ccnb1 expression, subsequently promoting cell cycle progression and potentially accelerating the depletion of the stem cell pool, which ultimately led to significant growth retardation. These findings suggest that SsMeox1 arrests the cell cycle of growth-specific muscle stem cells in the G2 phase by suppressing Ccnb1 expression, which is essential for maintaining the stability of the growth-specific muscle stem cell pool. Our study provides significant insights into the molecular mechanisms underlying the indeterminate growth of large teleosts.
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Affiliation(s)
| | | | | | | | - Yan He
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China; (W.S.); (X.L.); (K.H.); (J.Q.)
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Lynch J, Troadec E, Fung TK, Gladysz K, Virely C, Lau PNI, Cheung N, Zeisig B, Wong JWH, Lopes M, Huang S, So CWE. Hematopoietic stem cell quiescence and DNA replication dynamics maintained by the resilient β-catenin/Hoxa9/Prmt1 axis. Blood 2024; 143:1586-1598. [PMID: 38211335 PMCID: PMC11103100 DOI: 10.1182/blood.2023022082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 12/04/2023] [Accepted: 12/22/2023] [Indexed: 01/13/2024] Open
Abstract
ABSTRACT Maintenance of quiescence and DNA replication dynamics are 2 paradoxical requirements for the distinct states of dormant and active hematopoietic stem cells (HSCs), which are required to preserve the stem cell reservoir and replenish the blood cell system in response to hematopoietic stress, respectively. Here, we show that key self-renewal factors, β-catenin or Hoxa9, largely dispensable for HSC integrity, in fact, have dual functions in maintaining quiescence and enabling efficient DNA replication fork dynamics to preserve the functionality of hematopoietic stem and progenitor cells (HSPCs). Although β-catenin or Hoxa9 single knockout (KO) exhibited mostly normal hematopoiesis, their coinactivation led to severe hematopoietic defects stemmed from aberrant cell cycle, DNA replication, and damage in HSPCs. Mechanistically, β-catenin and Hoxa9 function in a compensatory manner to sustain key transcriptional programs that converge on the pivotal downstream target and epigenetic modifying enzyme, Prmt1, which protects the quiescent state and ensures an adequate supply of DNA replication and repair factors to maintain robust replication fork dynamics. Inactivation of Prmt1 phenocopied both cellular and molecular phenotypes of β-catenin/Hoxa9 combined KO, which at the same time could also be partially rescued by Prmt1 expression. The discovery of the highly resilient β-catenin/Hoxa9/Prmt1 axis in protecting both quiescence and DNA replication dynamics essential for HSCs at different key states provides not only novel mechanistic insights into their intricate regulation but also a potential tractable target for therapeutic intervention.
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Affiliation(s)
- Jennifer Lynch
- Leukaemia and Stem Cell Biology Group, School of Cancer and Pharmaceutical Sciences, King's College London, London, United Kingdom
| | - Estelle Troadec
- Leukaemia and Stem Cell Biology Group, School of Cancer and Pharmaceutical Sciences, King's College London, London, United Kingdom
| | - Tsz Kan Fung
- Leukaemia and Stem Cell Biology Group, School of Cancer and Pharmaceutical Sciences, King's College London, London, United Kingdom
- Department of Haematological Medicine, King’s College Hospital, London, United Kingdom
| | - Kornelia Gladysz
- Leukaemia and Stem Cell Biology Group, School of Cancer and Pharmaceutical Sciences, King's College London, London, United Kingdom
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - Clemence Virely
- Leukaemia and Stem Cell Biology Group, School of Cancer and Pharmaceutical Sciences, King's College London, London, United Kingdom
| | - Priscilla Nga Ieng Lau
- Leukaemia and Stem Cell Biology Group, School of Cancer and Pharmaceutical Sciences, King's College London, London, United Kingdom
| | - Ngai Cheung
- Leukaemia and Stem Cell Biology Group, School of Cancer and Pharmaceutical Sciences, King's College London, London, United Kingdom
| | - Bernd Zeisig
- Leukaemia and Stem Cell Biology Group, School of Cancer and Pharmaceutical Sciences, King's College London, London, United Kingdom
- Department of Haematological Medicine, King’s College Hospital, London, United Kingdom
| | - Jason W. H. Wong
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - Massimo Lopes
- Institute of Molecular Cancer Research, University of Zurich, Zurich, Switzerland
| | - Suming Huang
- Division of Pediatric Hematology/Oncology, Department of Pediatrics, Pennsylvania State University College of Medicine, Hershey, PA
| | - Chi Wai Eric So
- Leukaemia and Stem Cell Biology Group, School of Cancer and Pharmaceutical Sciences, King's College London, London, United Kingdom
- Department of Haematological Medicine, King’s College Hospital, London, United Kingdom
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8
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Singh S, Pugliano CM, Honaker Y, Laird A, DeGottardi MQ, Lopez E, Lachkar S, Stoffers C, Sommer K, Khan IF, Rawlings DJ. Efficient and sustained FOXP3 locus editing in hematopoietic stem cells as a therapeutic approach for IPEX syndrome. Mol Ther Methods Clin Dev 2024; 32:101183. [PMID: 38282895 PMCID: PMC10818254 DOI: 10.1016/j.omtm.2023.101183] [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: 06/14/2022] [Accepted: 12/20/2023] [Indexed: 01/30/2024]
Abstract
Immune dysregulation, polyendocrinopathy, enteropathy, X-linked (IPEX) syndrome is a monogenic disorder caused by mutations in the FOXP3 gene, required for generation of regulatory T (Treg) cells. Loss of Treg cells leads to immune dysregulation characterized by multi-organ autoimmunity and early mortality. Hematopoietic stem cell (HSC) transplantation can be curative, but success is limited by autoimmune complications, donor availability and/or graft-vs.-host disease. Correction of FOXP3 in autologous HSC utilizing a homology-directed repair (HDR)-based platform may provide a safer alternative therapy. Here, we demonstrate efficient editing of FOXP3 utilizing co-delivery of Cas9 ribonucleoprotein complexes and adeno-associated viral vectors to achieve HDR rates of >40% in vitro using mobilized CD34+ cells from multiple donors. Using this approach to deliver either a GFP or a FOXP3 cDNA donor cassette, we demonstrate sustained bone marrow engraftment of approximately 10% of HDR-edited cells in immune-deficient recipient mice at 16 weeks post-transplant. Further, we show targeted integration of FOXP3 cDNA in CD34+ cells from an IPEX patient and expression of the introduced FOXP3 transcript in gene-edited primary T cells from both healthy individuals and IPEX patients. Our combined findings suggest that refinement of this approach is likely to provide future clinical benefit in IPEX.
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Affiliation(s)
- Swati Singh
- Center for Immunity and Immunotherapies and the Program for Cell and Gene Therapy, Seattle Children’s Research Institute, Seattle, WA 98101, USA
| | - Cole M. Pugliano
- Center for Immunity and Immunotherapies and the Program for Cell and Gene Therapy, Seattle Children’s Research Institute, Seattle, WA 98101, USA
| | - Yuchi Honaker
- Center for Immunity and Immunotherapies and the Program for Cell and Gene Therapy, Seattle Children’s Research Institute, Seattle, WA 98101, USA
| | - Aidan Laird
- Center for Immunity and Immunotherapies and the Program for Cell and Gene Therapy, Seattle Children’s Research Institute, Seattle, WA 98101, USA
| | - M. Quinn DeGottardi
- Center for Immunity and Immunotherapies and the Program for Cell and Gene Therapy, Seattle Children’s Research Institute, Seattle, WA 98101, USA
| | - Ezra Lopez
- Center for Immunity and Immunotherapies and the Program for Cell and Gene Therapy, Seattle Children’s Research Institute, Seattle, WA 98101, USA
| | - Stefan Lachkar
- Center for Immunity and Immunotherapies and the Program for Cell and Gene Therapy, Seattle Children’s Research Institute, Seattle, WA 98101, USA
| | - Claire Stoffers
- Center for Immunity and Immunotherapies and the Program for Cell and Gene Therapy, Seattle Children’s Research Institute, Seattle, WA 98101, USA
| | - Karen Sommer
- Center for Immunity and Immunotherapies and the Program for Cell and Gene Therapy, Seattle Children’s Research Institute, Seattle, WA 98101, USA
| | - Iram F. Khan
- Center for Immunity and Immunotherapies and the Program for Cell and Gene Therapy, Seattle Children’s Research Institute, Seattle, WA 98101, USA
| | - David J. Rawlings
- Center for Immunity and Immunotherapies and the Program for Cell and Gene Therapy, Seattle Children’s Research Institute, Seattle, WA 98101, USA
- Department of Pediatrics, University of Washington, Seattle, WA 98101, USA
- Department of Immunology, University of Washington, Seattle, WA 98101, USA
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9
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Kao YR, Chen J, Kumari R, Ng A, Zintiridou A, Tatiparthy M, Ma Y, Aivalioti MM, Moulik D, Sundaravel S, Sun D, Reisz JA, Grimm J, Martinez-Lopez N, Stransky S, Sidoli S, Steidl U, Singh R, D'Alessandro A, Will B. An iron rheostat controls hematopoietic stem cell fate. Cell Stem Cell 2024; 31:378-397.e12. [PMID: 38402617 PMCID: PMC10939794 DOI: 10.1016/j.stem.2024.01.011] [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: 05/25/2023] [Revised: 12/20/2023] [Accepted: 01/30/2024] [Indexed: 02/27/2024]
Abstract
Mechanisms governing the maintenance of blood-producing hematopoietic stem and multipotent progenitor cells (HSPCs) are incompletely understood, particularly those regulating fate, ensuring long-term maintenance, and preventing aging-associated stem cell dysfunction. We uncovered a role for transitory free cytoplasmic iron as a rheostat for adult stem cell fate control. We found that HSPCs harbor comparatively small amounts of free iron and show the activation of a conserved molecular response to limited iron-particularly during mitosis. To study the functional and molecular consequences of iron restriction, we developed models allowing for transient iron bioavailability limitation and combined single-molecule RNA quantification, metabolomics, and single-cell transcriptomic analyses with functional studies. Our data reveal that the activation of the limited iron response triggers coordinated metabolic and epigenetic events, establishing stemness-conferring gene regulation. Notably, we find that aging-associated cytoplasmic iron loading reversibly attenuates iron-dependent cell fate control, explicating intervention strategies for dysfunctional aged stem cells.
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Affiliation(s)
- Yun-Ruei Kao
- Department of Oncology, Albert Einstein College of Medicine, New York, NY, USA.
| | - Jiahao Chen
- Department of Cell Biology, Albert Einstein College of Medicine, New York, NY, USA
| | - Rajni Kumari
- Department of Cell Biology, Albert Einstein College of Medicine, New York, NY, USA
| | - Anita Ng
- Karches Center for Oncology Research, the Feinstein Institutes for Medical Research, Northwell Health, Manhasset, NY, USA
| | - Aliona Zintiridou
- Department of Cell Biology, Albert Einstein College of Medicine, New York, NY, USA
| | - Madhuri Tatiparthy
- Department of Cell Biology, Albert Einstein College of Medicine, New York, NY, USA
| | - Yuhong Ma
- Department of Cell Biology, Albert Einstein College of Medicine, New York, NY, USA
| | - Maria M Aivalioti
- Department of Cell Biology, Albert Einstein College of Medicine, New York, NY, USA
| | - Deeposree Moulik
- Department of Cell Biology, Albert Einstein College of Medicine, New York, NY, USA
| | - Sriram Sundaravel
- Department of Cell Biology, Albert Einstein College of Medicine, New York, NY, USA
| | - Daqian Sun
- Department of Cell Biology, Albert Einstein College of Medicine, New York, NY, USA
| | - Julie A Reisz
- Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Juliane Grimm
- Department of Cell Biology, Albert Einstein College of Medicine, New York, NY, USA
| | - Nuria Martinez-Lopez
- Department of Medicine, University of California, Los Angeles, Los Angeles, CA, USA; Vatche and Tamar Manoukian Division of Digestive Diseases, University of California, Los Angeles, Los Angeles, CA, USA; Comprehensive Liver Research Center at University of California Los Angeles, CA, USA
| | - Stephanie Stransky
- Department of Biochemistry, Albert Einstein College of Medicine, New York, NY, USA
| | - Simone Sidoli
- Department of Biochemistry, Albert Einstein College of Medicine, New York, NY, USA
| | - Ulrich Steidl
- Department of Oncology, Albert Einstein College of Medicine, New York, NY, USA; Department of Cell Biology, Albert Einstein College of Medicine, New York, NY, USA; Ruth L. and David S. Gottesman Institute for Stem Cell Research and Regenerative Medicine, Albert Einstein College of Medicine, New York, NY, USA; Blood Cancer Institute, Montefiore Einstein Comprehensive Cancer Center, Albert Einstein College of Medicine, Bronx, NY, USA; Cancer Dormancy and Tumor Microenvironment Institute, Montefiore Einstein Comprehensive Cancer Center, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Rajat Singh
- Department of Medicine, University of California, Los Angeles, Los Angeles, CA, USA; Vatche and Tamar Manoukian Division of Digestive Diseases, University of California, Los Angeles, Los Angeles, CA, USA; Comprehensive Liver Research Center at University of California Los Angeles, CA, USA
| | - Angelo D'Alessandro
- Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Britta Will
- Department of Oncology, Albert Einstein College of Medicine, New York, NY, USA; Department of Cell Biology, Albert Einstein College of Medicine, New York, NY, USA; Ruth L. and David S. Gottesman Institute for Stem Cell Research and Regenerative Medicine, Albert Einstein College of Medicine, New York, NY, USA; Blood Cancer Institute, Montefiore Einstein Comprehensive Cancer Center, Albert Einstein College of Medicine, Bronx, NY, USA; Cancer Dormancy and Tumor Microenvironment Institute, Montefiore Einstein Comprehensive Cancer Center, Albert Einstein College of Medicine, Bronx, NY, USA; Institute for Aging Studies, Albert Einstein College of Medicine, New York, NY, USA.
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10
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Jiang Y, Huang H, Liu J, Luo D, Mu R, Yuan J, Lin J, Chen Q, Tao W, Yang L, Zhang M, Zhang P, Fang F, Xu J, Gong Q, Xie Z, Zhang Y. Hippo cooperates with p53 to maintain foregut homeostasis and suppress the malignant transformation of foregut basal progenitor cells. Proc Natl Acad Sci U S A 2024; 121:e2320559121. [PMID: 38408237 DOI: 10.1073/pnas.2320559121] [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: 11/28/2023] [Accepted: 01/23/2024] [Indexed: 02/28/2024] Open
Abstract
Basal progenitor cells serve as a stem cell pool to maintain the homeostasis of the epithelium of the foregut, including the esophagus and the forestomach. Aberrant genetic regulation in these cells can lead to carcinogenesis, such as squamous cell carcinoma (SCC). However, the underlying molecular mechanisms regulating the function of basal progenitor cells remain largely unknown. Here, we use mouse models to reveal that Hippo signaling is required for maintaining the homeostasis of the foregut epithelium and cooperates with p53 to repress the initiation of foregut SCC. Deletion of Mst1/2 in mice leads to epithelial overgrowth in both the esophagus and forestomach. Further molecular studies find that Mst1/2-deficiency promotes epithelial growth by enhancing basal cell proliferation in a Yes-associated protein (Yap)-dependent manner. Moreover, Mst1/2 deficiency accelerates the onset of foregut SCC in a carcinogen-induced foregut SCC mouse model, depending on Yap. Significantly, a combined deletion of Mst1/2 and p53 in basal progenitor cells sufficiently drives the initiation of foregut SCC. Therefore, our studies shed light on the collaborative role of Hippo signaling and p53 in maintaining squamous epithelial homeostasis while suppressing malignant transformation of basal stem cells within the foregut.
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Affiliation(s)
- Yu Jiang
- State Key Laboratory of Microbial Metabolism and Joint International Research Laboratory of Metabolic and Developmental Sciences, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Haidi Huang
- State Key Laboratory of Microbial Metabolism and Joint International Research Laboratory of Metabolic and Developmental Sciences, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Jiangying Liu
- State Key Laboratory of Microbial Metabolism and Joint International Research Laboratory of Metabolic and Developmental Sciences, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Dan Luo
- State Key Laboratory of Microbial Metabolism and Joint International Research Laboratory of Metabolic and Developmental Sciences, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Rongzi Mu
- State Key Laboratory of Microbial Metabolism and Joint International Research Laboratory of Metabolic and Developmental Sciences, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Jianghong Yuan
- State Key Laboratory of Microbial Metabolism and Joint International Research Laboratory of Metabolic and Developmental Sciences, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Jihong Lin
- Department of Thoracic Surgery, Fujian Medical University Union Hospital, Fuzhou 350001, China
| | - Qiyue Chen
- Department of Gastric Surgery, Fujian Medical University Union Hospital, Fuzhou 350001, China
- Department of General Surgery, Fujian Medical University Union Hospital, Fuzhou 350001, China
| | - Wufan Tao
- State Key Laboratory of Genetic Engineering and Institute of Developmental Biology and Molecular Medicine, Fudan University, Shanghai 200433, China
| | - Ling Yang
- Clinical Medical Research Center of The Affiliated Hospital and Inner Mongolia Key Laboratory of Medical Cellular Biology, Inner Mongolia Medical University, Hohhot 010050, China
| | - Man Zhang
- Department of Thoracic Surgery, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China
| | - Pingping Zhang
- State Key Laboratory of Microbial Metabolism and Joint International Research Laboratory of Metabolic and Developmental Sciences, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Fengqin Fang
- Department of Laboratory Medicine, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200336, China
| | - Jianming Xu
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX 77030
| | - Qingqiu Gong
- State Key Laboratory of Microbial Metabolism and Joint International Research Laboratory of Metabolic and Developmental Sciences, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Zhiping Xie
- State Key Laboratory of Microbial Metabolism and Joint International Research Laboratory of Metabolic and Developmental Sciences, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yongchun Zhang
- State Key Laboratory of Microbial Metabolism and Joint International Research Laboratory of Metabolic and Developmental Sciences, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China
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11
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Garone C, De Giorgio F, Carli S. Mitochondrial metabolism in neural stem cells and implications for neurodevelopmental and neurodegenerative diseases. J Transl Med 2024; 22:238. [PMID: 38438847 PMCID: PMC10910780 DOI: 10.1186/s12967-024-05041-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Accepted: 02/25/2024] [Indexed: 03/06/2024] Open
Abstract
Mitochondria are cytoplasmic organelles having a fundamental role in the regulation of neural stem cell (NSC) fate during neural development and maintenance.During embryonic and adult neurogenesis, NSCs undergo a metabolic switch from glycolytic to oxidative phosphorylation with a rise in mitochondrial DNA (mtDNA) content, changes in mitochondria shape and size, and a physiological augmentation of mitochondrial reactive oxygen species which together drive NSCs to proliferate and differentiate. Genetic and epigenetic modifications of proteins involved in cellular differentiation (Mechanistic Target of Rapamycin), proliferation (Wingless-type), and hypoxia (Mitogen-activated protein kinase)-and all connected by the common key regulatory factor Hypoxia Inducible Factor-1A-are deemed to be responsible for the metabolic shift and, consequently, NSC fate in physiological and pathological conditions.Both primary mitochondrial dysfunction due to mutations in nuclear DNA or mtDNA or secondary mitochondrial dysfunction in oxidative phosphorylation (OXPHOS) metabolism, mitochondrial dynamics, and organelle interplay pathways can contribute to the development of neurodevelopmental or progressive neurodegenerative disorders.This review analyses the physiology and pathology of neural development starting from the available in vitro and in vivo models and highlights the current knowledge concerning key mitochondrial pathways involved in this process.
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Affiliation(s)
- C Garone
- Department of Medical and Surgical Sciences, Alma Mater Studiorum-University of Bologna, Bologna, Italy.
- IRCCS Istituto Delle Scienze Neurologiche di Bologna, UO Neuropsichiatria Dell'età Pediatrica, Bologna, Italy.
| | - F De Giorgio
- Department of Medical and Surgical Sciences, Alma Mater Studiorum-University of Bologna, Bologna, Italy
| | - S Carli
- Department of Medical and Surgical Sciences, Alma Mater Studiorum-University of Bologna, Bologna, Italy
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12
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Tang B, Wang X, He H, Chen R, Qiao G, Yang Y, Xu Z, Wang L, Dong Q, Yu J, Zhang MQ, Shi M, Wang J. Aging-disturbed FUS phase transition impairs hematopoietic stem cells by altering chromatin structure. Blood 2024; 143:124-138. [PMID: 37748139 DOI: 10.1182/blood.2023020539] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 09/08/2023] [Accepted: 09/09/2023] [Indexed: 09/27/2023] Open
Abstract
ABSTRACT Aged hematopoietic stem cells (HSCs) exhibit compromised reconstitution capacity. The molecular mechanisms behind this phenomenon are not fully understood. Here, we observed that the expression of FUS is increased in aged HSCs, and enforced FUS recapitulates the phenotype of aged HSCs through arginine-glycine-glycine-mediated aberrant FUS phase transition. By using Fus-gfp mice, we observed that FUShigh HSCs exhibit compromised FUS mobility and resemble aged HSCs both functionally and transcriptionally. The percentage of FUShigh HSCs is increased upon physiological aging and replication stress, and FUSlow HSCs of aged mice exhibit youthful function. Mechanistically, FUShigh HSCs exhibit a different global chromatin organization compared with FUSlow HSCs, which is observed in aged HSCs. Many topologically associating domains (TADs) are merged in aged HSCs because of the compromised binding of CCCTC-binding factor with chromatin, which is invoked by aberrant FUS condensates. It is notable that the transcriptional alteration between FUShigh and FUSlow HSCs originates from the merged TADs and is enriched in HSC aging-related genes. Collectively, this study reveals for the first time that aberrant FUS mobility promotes HSC aging by altering chromatin structure.
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Affiliation(s)
- Baixue Tang
- Department of Biology, School of Pharmaceutical Sciences, Tsinghua University, Beijing, China
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
| | - Xinming Wang
- Tsinghua-Peking Joint Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing, China
| | - Hanqing He
- Department of Biology, School of Pharmaceutical Sciences, Tsinghua University, Beijing, China
| | - Ruiqing Chen
- Department of Biology, School of Pharmaceutical Sciences, Tsinghua University, Beijing, China
| | - Guofeng Qiao
- Department of Biology, School of Pharmaceutical Sciences, Tsinghua University, Beijing, China
| | - Yang Yang
- Department of Biology, School of Pharmaceutical Sciences, Tsinghua University, Beijing, China
| | - Zihan Xu
- School of Life Sciences, Joint Graduate Program of Peking-Tsinghua-National Institute of Biological Sciences, Peking University, Beijing, China
| | - Longteng Wang
- School of Life Sciences, Joint Graduate Program of Peking-Tsinghua-National Institute of Biological Sciences, Peking University, Beijing, China
| | - Qiongye Dong
- Institute of Precision of Medicine, Peking University Shenzhen Hospital, Shenzhen, China
| | - Jia Yu
- State Key Laboratory of Medical Molecular Biology, Department of Biochemistry and Molecular Biology, Haihe Laboratory of Cell Ecosystem, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, School of Basic Medicine, Peking Union Medical College, Beijing, China
| | - Michael Q Zhang
- Ministry of Education Key Laboratory of Bioinformatics, Bioinformatics Division and Center for Synthetic and Systems Biology, Beijing National Research Center for Information Science and Technology, School of Medicine, Tsinghua University, Beijing, China
- Department of Biological Sciences, Center for Systems Biology, The University of Texas, Richardson, TX
| | - Minglei Shi
- Ministry of Education Key Laboratory of Bioinformatics, Bioinformatics Division and Center for Synthetic and Systems Biology, Beijing National Research Center for Information Science and Technology, School of Medicine, Tsinghua University, Beijing, China
- Institute of Medical Innovation and Research, Peking University Third Hospital, Beijing, China
| | - Jianwei Wang
- Department of Biology, School of Pharmaceutical Sciences, Tsinghua University, Beijing, China
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
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13
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Hussain G, Akram R, Anwar H, Sajid F, Iman T, Han HS, Raza C, De Aguilar JLG. Adult neurogenesis: a real hope or a delusion? Neural Regen Res 2024; 19:6-15. [PMID: 37488837 PMCID: PMC10479850 DOI: 10.4103/1673-5374.375317] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 02/27/2023] [Accepted: 04/10/2023] [Indexed: 07/26/2023] Open
Abstract
Adult neurogenesis, the process of creating new neurons, involves the coordinated division, migration, and differentiation of neural stem cells. This process is restricted to neurogenic niches located in two distinct areas of the brain: the subgranular zone of the dentate gyrus of the hippocampus and the subventricular zone of the lateral ventricle, where new neurons are generated and then migrate to the olfactory bulb. Neurogenesis has been thought to occur only during the embryonic and early postnatal stages and to decline with age due to a continuous depletion of neural stem cells. Interestingly, recent years have seen tremendous progress in our understanding of adult brain neurogenesis, bridging the knowledge gap between embryonic and adult neurogenesis. Here, we discuss the current status of adult brain neurogenesis in light of what we know about neural stem cells. In this notion, we talk about the importance of intracellular signaling molecules in mobilizing endogenous neural stem cell proliferation. Based on the current understanding, we can declare that these molecules play a role in targeting neurogenesis in the mature brain. However, to achieve this goal, we need to avoid the undesired proliferation of neural stem cells by controlling the necessary checkpoints, which can lead to tumorigenesis and prove to be a curse instead of a blessing or hope.
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Affiliation(s)
- Ghulam Hussain
- Neurochemicalbiology and Genetics Laboratory (NGL), Department of Physiology, Faculty of Life Sciences, Government College University, Faisalabad, Punjab, Pakistan
| | - Rabia Akram
- Neurochemicalbiology and Genetics Laboratory (NGL), Department of Physiology, Faculty of Life Sciences, Government College University, Faisalabad, Punjab, Pakistan
| | - Haseeb Anwar
- Neurochemicalbiology and Genetics Laboratory (NGL), Department of Physiology, Faculty of Life Sciences, Government College University, Faisalabad, Punjab, Pakistan
| | - Faiqa Sajid
- Neurochemicalbiology and Genetics Laboratory (NGL), Department of Physiology, Faculty of Life Sciences, Government College University, Faisalabad, Punjab, Pakistan
| | - Tehreem Iman
- Neurochemicalbiology and Genetics Laboratory (NGL), Department of Physiology, Faculty of Life Sciences, Government College University, Faisalabad, Punjab, Pakistan
| | - Hyung Soo Han
- Department of Physiology, School of Medicine, Clinical Omics Institute, Kyungpook National University, Daegu, Korea
| | - Chand Raza
- Department of Zoology, Faculty of Chemistry and Life Sciences, Government College University, Lahore, Pakistan
| | - Jose-Luis Gonzalez De Aguilar
- INSERM, U1118, Mécanismes Centraux et Péripheriques de la Neurodégénérescence, Strasbourg, France, Université de Strasbourg, Strasbourg, France
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14
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Karra L, Finger AM, Shechtman L, Krush M, Huang RMY, Prinz M, Tennvooren I, Bahl K, Hysienaj L, Gonzalez PG, Combes AJ, Gonzalez H, Argüello RJ, Spitzer MH, Roose JP. Single cell proteomics characterization of bone marrow hematopoiesis with distinct Ras pathway lesions. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.12.20.572584. [PMID: 38187679 PMCID: PMC10769276 DOI: 10.1101/2023.12.20.572584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2024]
Abstract
Normal hematopoiesis requires constant prolific production of different blood cell lineages by multipotent hematopoietic stem cells (HSC). Stem- and progenitor- cells need to balance dormancy with proliferation. How genetic alterations impact frequency, lineage potential, and metabolism of HSC is largely unknown. Here, we compared induced expression of KRAS G12D or RasGRP1 to normal hematopoiesis. At low-resolution, both Ras pathway lesions result in skewing towards myeloid lineages. Single-cell resolution CyTOF proteomics unmasked an expansion of HSC- and progenitor- compartments for RasGRP1, contrasted by a depletion for KRAS G12D . SCENITH™ quantitates protein synthesis with single-cell precision and corroborated that immature cells display low metabolic SCENITH™ rates. Both RasGRP1 and KRAS G12D elevated mean SCENITH™ signals in immature cells. However, RasGRP1-overexpressing stem cells retain a metabolically quiescent cell-fraction, whereas this fraction diminishes for KRAS G12D . Our temporal single cell proteomics and metabolomics datasets provide a resource of mechanistic insights into altered hematopoiesis at single cell resolution.
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15
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Ma K, Wang X, Wu L, Yu L, Ye J, Li X, Geng L, Shi Z, Yang H, Zhang X, Zhang Y, Wu S, Yuan P, Zhang Y, Dong F, Hao S, Hu L, Wei W, Fang R, Cheng T. CEA cell adhesion molecule 5 enriches functional human hematopoietic stem cells capable of long-term multi-lineage engraftment. iScience 2023; 26:108561. [PMID: 38144459 PMCID: PMC10746536 DOI: 10.1016/j.isci.2023.108561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Revised: 09/28/2023] [Accepted: 11/21/2023] [Indexed: 12/26/2023] Open
Abstract
Hematopoietic stem cell (HSC) surface markers improve the understanding of cell identity and function. Here, we report that human HSCs can be distinguished by their expression of the CEA Cell Adhesion Molecule 5 (CEACAM5, CD66e), which serves as a marker and a regulator of HSC function. CD66e+ cells exhibited a 5.5-fold enrichment for functional long term HSCs compared to CD66e- cells. CD66e+CD34+CD90+CD45RA- cells displayed robust multi-lineage repopulation and serial reconstitution ability in immunodeficient mice compared to CD66e-CD34+CD90+CD45RA-cells. CD66e expression also identified almost all repopulating HSCs within the CD34+CD90+CD45RA- population. Together, these results indicated that CEACAM5 is a marker that enriches functional human hematopoietic stem cells capable of long-term multi-lineage engraftment.
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Affiliation(s)
- Kuiying Ma
- EdiGene Inc., Life Science Park, Changping District, Beijing 102206, China
| | - Xuan Wang
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
- Tianjin Institutes of Health Science, Tianjin 301600, China
| | - Linjie Wu
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
- Tianjin Institutes of Health Science, Tianjin 301600, China
| | - Lingling Yu
- EdiGene Inc., Life Science Park, Changping District, Beijing 102206, China
| | - Jinhui Ye
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
- Tianjin Institutes of Health Science, Tianjin 301600, China
| | - Xueling Li
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
- Tianjin Institutes of Health Science, Tianjin 301600, China
| | - Lili Geng
- EdiGene Inc., Life Science Park, Changping District, Beijing 102206, China
| | - Zhongyu Shi
- EdiGene Inc., Life Science Park, Changping District, Beijing 102206, China
| | - Huihui Yang
- EdiGene Inc., Life Science Park, Changping District, Beijing 102206, China
| | - Xijuan Zhang
- EdiGene Inc., Life Science Park, Changping District, Beijing 102206, China
| | - Yongjian Zhang
- EdiGene Inc., Life Science Park, Changping District, Beijing 102206, China
| | - Shuchang Wu
- EdiGene Inc., Life Science Park, Changping District, Beijing 102206, China
| | - Pengfei Yuan
- EdiGene Inc., Life Science Park, Changping District, Beijing 102206, China
| | - Yingchi Zhang
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
- Tianjin Institutes of Health Science, Tianjin 301600, China
| | - Fang Dong
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
- Tianjin Institutes of Health Science, Tianjin 301600, China
| | - Sha Hao
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
- Tianjin Institutes of Health Science, Tianjin 301600, China
| | - Linping Hu
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
- Tianjin Institutes of Health Science, Tianjin 301600, China
| | - Wensheng Wei
- Biomedical Pioneering Innovation Center, Beijing Advanced Innovation Center for Genomics, Peking-Tsinghua Center for Life Sciences, Peking University Genome Editing Research Center, State Key Laboratory of Protein and Plant Gene Research, School of Life Sciences, Peking University, Beijing 100871, China
| | - Riguo Fang
- EdiGene Inc., Life Science Park, Changping District, Beijing 102206, China
| | - Tao Cheng
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
- Center for Stem Cell Medicine, Chinese Academy of Medical Sciences, Tianjin 300000, China
- Department of Stem Cell & Regenerative Medicine, Peking Union Medical College, Tianjin 300000, China
- Tianjin Institutes of Health Science, Tianjin 301600, China
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16
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Kasbekar M, Mitchell CA, Proven MA, Passegué E. Hematopoietic stem cells through the ages: A lifetime of adaptation to organismal demands. Cell Stem Cell 2023; 30:1403-1420. [PMID: 37865087 PMCID: PMC10842631 DOI: 10.1016/j.stem.2023.09.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2023] [Revised: 09/20/2023] [Accepted: 09/28/2023] [Indexed: 10/23/2023]
Abstract
Hematopoietic stem cells (HSCs), which govern the production of all blood lineages, transition through a series of functional states characterized by expansion during fetal development, functional quiescence in adulthood, and decline upon aging. We describe central features of HSC regulation during ontogeny to contextualize how adaptive responses over the life of the organism ultimately form the basis for HSC functional degradation with age. We particularly focus on the role of cell cycle regulation, inflammatory response pathways, epigenetic changes, and metabolic regulation. We then explore how the knowledge of age-related changes in HSC regulation can inform strategies for the rejuvenation of old HSCs.
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Affiliation(s)
- Monica Kasbekar
- Columbia Stem Cell Initiative, Department of Genetics and Development, Columbia University, New York, NY 10032, USA; Division of Hematology and Medical Oncology, Department of Medicine, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - Carl A Mitchell
- Columbia Stem Cell Initiative, Department of Genetics and Development, Columbia University, New York, NY 10032, USA
| | - Melissa A Proven
- Columbia Stem Cell Initiative, Department of Genetics and Development, Columbia University, New York, NY 10032, USA
| | - Emmanuelle Passegué
- Columbia Stem Cell Initiative, Department of Genetics and Development, Columbia University, New York, NY 10032, USA.
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17
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Li Y, Zhang K, Ai X, Zhang Q, Jiang L, Long J, Xu H, Feng C, Zhang Y, Tang G, Chong F, Wang L, Huang B. A Biomimetic Peptide Functions as Specific Extracellular Matrix for Quiescence of Stem Cells against Intervertebral Disc Degeneration. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2300578. [PMID: 37423970 DOI: 10.1002/smll.202300578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 05/03/2023] [Indexed: 07/11/2023]
Abstract
Maintaining quiescence of stem cells is a potential way to decrease cell nutrition demand for restoring the organization. Herein, a biomimetic peptide to maintain quiescence of stem cells through C-X-C motif chemokine ligand 8 (CXCL8)-C-X-C motif chemokine receptor 1 (CXCR1) pathway against intervertebral disc degeneration (IVDD) is developed. First, it is confirmed that quiescence can be induced via inhibiting phosphatidylinositol 3-kinase (PI3K)/Akt/mammalian target of rapamycin (mTOR) pathway in nucleus pulposus stem cells (NPSCs). Meanwhile, it is well known that CXCR1, a chemokine receptor, can be targeted by CXCL8, resulting in cell proliferation via activating PI3K/Akt/mTOR pathway. Second, a biomimetic peptide (OAFF) that can bind to CXCR1 and form fibrous networks on NPSCs, mimicking extracellular matrix formation is developed. The multivalent effect and long-term binding to CXCR1 on NPSCs of OAFF fibers offer forcefully competitive inhibition with natural CXCL8, which induces NPSCs quiescence and ultimately overcomes obstacle in intradiscal injection therapy. In rat caudal disc puncture model, OAFF nanofibers still maintain at 5 weeks after operation and inhibit degeneration process of intervertebral disc in terms of histopathology and imageology. In situ fibrillogenesis of biomimetic peptide on NPSCs provides promising stem cells for intradiscal injection therapy against IVDD.
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Affiliation(s)
- Yuan Li
- Department of Orthopedics, Xinqiao Hospital, Army Medical University, Chongqing, 400037, P. R. China
| | - Kuo Zhang
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology (NCNST), Beijing, 100190, P. R. China
| | - Xuezheng Ai
- Department of Orthopedics, Xinqiao Hospital, Army Medical University, Chongqing, 400037, P. R. China
| | - Qingshi Zhang
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology (NCNST), Beijing, 100190, P. R. China
| | - Lu Jiang
- Clinical Medicine Research Center, Xinqiao Hospital, Army Medical University, Chongqing, 400037, P. R. China
| | - Jiang Long
- Department of Orthopedics, Xinqiao Hospital, Army Medical University, Chongqing, 400037, P. R. China
| | - Huange Xu
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology (NCNST), Beijing, 100190, P. R. China
| | - Chencheng Feng
- Department of Orthopedics, Xinqiao Hospital, Army Medical University, Chongqing, 400037, P. R. China
| | - Yaqing Zhang
- Department of Orthopedics, Xinqiao Hospital, Army Medical University, Chongqing, 400037, P. R. China
| | - Guoke Tang
- Department of Orthopedics, Shanghai General Hospital, Shanghai Jiaotong University, Shanghai, 200080, P. R. China
| | - Fanli Chong
- Department of Orthopedics, Xinqiao Hospital, Army Medical University, Chongqing, 400037, P. R. China
| | - Lei Wang
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology (NCNST), Beijing, 100190, P. R. China
| | - Bo Huang
- Department of Orthopedics, Xinqiao Hospital, Army Medical University, Chongqing, 400037, P. R. China
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18
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Burocziova M, Danek P, Oravetzova A, Chalupova Z, Alberich-Jorda M, Macurek L. Ppm1d truncating mutations promote the development of genotoxic stress-induced AML. Leukemia 2023; 37:2209-2220. [PMID: 37709843 PMCID: PMC10624630 DOI: 10.1038/s41375-023-02030-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 08/31/2023] [Accepted: 09/06/2023] [Indexed: 09/16/2023]
Abstract
Hematopoietic stem cells (HSCs) ensure blood cell production during the life-time of an organism, and to do so they need to balance self-renewal, proliferation, differentiation, and migration in a steady state as well as in response to stress or injury. Importantly, aberrant proliferation of HSCs leads to hematological malignancies, and thus, tight regulation by various tumor suppressor pathways, including p53, is essential. Protein phosphatase magnesium-dependent 1 delta (PPM1D) is a negative regulator of p53 and promotes cell survival upon induction of genotoxic stress. Truncating mutations in the last exon of PPM1D lead to the production of a stable, enzymatically active protein and are commonly associated with clonal hematopoiesis. Using a transgenic mouse model, we demonstrate that truncated PPM1D reduces self-renewal of HSCs in basal conditions but promotes the development of aggressive AML after exposure to ionizing radiation. Inhibition of PPM1D suppressed the colony growth of leukemic stem and progenitor cells carrying the truncated PPM1D, and remarkably, it provided protection against irradiation-induced cell growth. Altogether, we demonstrate that truncated PPM1D affects HSC maintenance, disrupts normal hematopoiesis, and that its inhibition could be beneficial in the context of therapy-induced AML.
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Affiliation(s)
- Monika Burocziova
- Department Cancer Cell Biology, Institute of Molecular Genetics of the Czech Academy of Sciences, Videnska 1083, 142 20 Prague 4, Prague, Czech Republic
- Department of Hemato-oncology, Institute of Molecular Genetics of the Czech Academy of Sciences, Videnska 1083, 142 20 Prague 4, Prague, Czech Republic
| | - Petr Danek
- Department of Hemato-oncology, Institute of Molecular Genetics of the Czech Academy of Sciences, Videnska 1083, 142 20 Prague 4, Prague, Czech Republic
| | - Anna Oravetzova
- Department Cancer Cell Biology, Institute of Molecular Genetics of the Czech Academy of Sciences, Videnska 1083, 142 20 Prague 4, Prague, Czech Republic
| | - Zuzana Chalupova
- Department Cancer Cell Biology, Institute of Molecular Genetics of the Czech Academy of Sciences, Videnska 1083, 142 20 Prague 4, Prague, Czech Republic
| | - Meritxell Alberich-Jorda
- Department of Hemato-oncology, Institute of Molecular Genetics of the Czech Academy of Sciences, Videnska 1083, 142 20 Prague 4, Prague, Czech Republic.
- Childhood Leukaemia Investigation Prague, Department of Pediatric Haematology and Oncology, 2nd Faculty of Medicine, Charles University in Prague, University Hospital Motol, V Uvalu 84, Praha, 150 06, Czech Republic.
| | - Libor Macurek
- Department Cancer Cell Biology, Institute of Molecular Genetics of the Czech Academy of Sciences, Videnska 1083, 142 20 Prague 4, Prague, Czech Republic.
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19
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Guo R, Gu T, Xiao Y, Xiao T, Liu Q, Li Z, Yu J. Hsa-miR-27b-5p suppresses the osteogenic and odontogenic differentiation of stem cells from human exfoliated deciduous teeth via targeting BMPR1A: An ex vivo study. Int Endod J 2023; 56:1284-1300. [PMID: 37485765 DOI: 10.1111/iej.13959] [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: 02/10/2023] [Revised: 07/18/2023] [Accepted: 07/19/2023] [Indexed: 07/25/2023]
Abstract
AIM Recently, miR-27b-5p was shown to be abundantly expressed in extracellular vehicles (EVs) from the inflammatory microenvironment. This study determined the role of miR-27b-5p in regulating osteogenic and odontogenic differentiation of stem cells from human exfoliated deciduous teeth (SHEDs) and further examined the regulatory mechanism of bone morphogenetic protein receptor type-1A (BMPR1A). METHODOLOGY Characteristics of SHEDs and SHEDs-EVs derived from SHEDs were evaluated respectively. The expression of miR-27b-5p in SHEDs and EVs was detected during osteo-induction. Mechanically, SHEDs were treated with miR-27b-5p mimics or an inhibitor, and the osteogenic/odontogenic differentiation and proliferation were assessed. Bioinformatic analysis and luciferase reporter were utilized for target gene prediction and verification. Finally, BMPR1A-overexpressed plasmids were transfected into SHEDs to investigate the participation of the BMPR1A/SMAD4 pathway. Data were analysed using Student's t-test, one-way analysis of variance and Chi-square test. RESULTS MiR-27b-5p was expressed in both SHEDs and EVs and was significantly increased at the initial stage of differentiation and then decreased in a time-dependent manner (p < .01). Upregulation of miR-27b-5p significantly suppressed osteogenic/odontogenic differentiation of SHEDs and inhibited proliferation (p < .05), whereas inhibition of miR-27b-5p enhanced the differentiation (p < .05). Dual-luciferase reporter assay and pull-down assay confirmed the binding site between miR-27b-5p and BMPR1A (p < .05). The overexpression of BMPR1A rescued the effect of miR-27b-5p, while contributed to the decrease of pluripotency (p < .05). Additionally, miR-27b-5p maintained pluripotency in BMPR1A-overexpressed SHEDs (p < .05). CONCLUSIONS MiR-27b-5p in SHEDs/EVs was inversely associated with differentiation and suppressed the osteogenic and odontogenic differentiation of SHEDs and maintained the pluripotency of SHEDs partly by shuttering BMPR1A-targeting BMP signalling. Theoretically, inhibition of miR-27b-5p represents a potential strategy to promote osteanagenesis and dentinogenesis. However, miR-27b-5p capsuled EVs might maintain cell pluripotency and self-renewal for non-cell-targeted therapy.
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Affiliation(s)
- Rong Guo
- Department of Endodontics, The Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, China
- Jiangsu Province Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, China
- Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing Medical University, Nanjing, China
| | - Tingjie Gu
- Department of Endodontics, The Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, China
- Jiangsu Province Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, China
- Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing Medical University, Nanjing, China
| | - Ya Xiao
- Department of Endodontics, The Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, China
- Jiangsu Province Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, China
- Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing Medical University, Nanjing, China
| | - Tong Xiao
- Department of Endodontics, The Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, China
- Jiangsu Province Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, China
- Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing Medical University, Nanjing, China
| | - Qian Liu
- Jiangsu Province Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, China
- Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing Medical University, Nanjing, China
- Department of Paediatric Dentistry, The Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, China
| | - Zehan Li
- Department of Endodontics, The Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, China
- Jiangsu Province Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, China
- Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing Medical University, Nanjing, China
| | - Jinhua Yu
- Department of Endodontics, The Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, China
- Jiangsu Province Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, China
- Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing Medical University, Nanjing, China
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20
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Houser JS, Patel M, Wright K, Onopiuk M, Tsiokas L, Humphrey MB. The inhibitor of MyoD Family A (I-MFA) regulates megakaryocyte lineage commitment and terminal differentiation. Blood Cells Mol Dis 2023; 102:102760. [PMID: 37267696 DOI: 10.1016/j.bcmd.2023.102760] [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: 03/07/2023] [Revised: 05/22/2023] [Accepted: 05/23/2023] [Indexed: 06/04/2023]
Abstract
Hematopoiesis and lineage commitment are regulated by several conserved cell-intrinsic signaling pathways, including MAPKs and β-catenin/TCF/LEF. The Inhibitor of MyoD Family A (I-MFA), a transcriptional repressor and tumor suppressor gene, interacts with these pathways and is dysregulated in chronic and acute myeloid leukemias, suggesting it may play a role in development and differentiation during hematopoiesis. To study this, immune cell populations in the bone marrow (BM) and periphery were analyzed in mice lacking Mdfi, encoding I-MFA (I-MFA-/-), and wild type (WT) controls. I-MFA-/- mice had reduced spleen and BM cellularity, with significant hyposplenism, compared to WT mice. In blood, total red blood cells and platelet counts were significantly reduced in I-MFA-/- mice, accompanied by a reduction in megakaryocyte (MK)/erythrocyte progenitor cells and an increase in myeloid progenitors in BM compared to WT mice. The K562 cell line exhibits PMA-induced MK differentiation, and shRNA knockdown of I-MFA resulted in reduced differentiation compared to control, with an increase and prolongation in phospho-JNK and phospho-ERK signaling. Overexpression of I-MFA promoted MK differentiation. These results suggest I-MFA plays a cell-intrinsic role in the response to differentiation signals, an effect that can be explored in the context of hematological cancers or other blood proliferative disorders.
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Affiliation(s)
- Jeremy S Houser
- Department of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States of America
| | - Maulin Patel
- Department of Cell Biology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States of America
| | - Kyle Wright
- Department of Pathology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States of America
| | - Marta Onopiuk
- Department of Cell Biology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States of America
| | - Leonidas Tsiokas
- Department of Cell Biology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States of America
| | - Mary Beth Humphrey
- Department of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States of America; Oklahoma City Veteran's Affairs Medical Center, Oklahoma City, OK, United States of America.
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21
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Andersen OE, Poulsen JV, Farup J, de Morree A. Regulation of adult stem cell function by ketone bodies. Front Cell Dev Biol 2023; 11:1246998. [PMID: 37745291 PMCID: PMC10513036 DOI: 10.3389/fcell.2023.1246998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Accepted: 08/14/2023] [Indexed: 09/26/2023] Open
Abstract
Adult stem cells play key roles in tissue homeostasis and regeneration. Recent evidence suggests that dietary interventions can significantly impact adult stem cell function. Some of these effects depend on ketone bodies. Adult stem cells could therefore potentially be manipulated through dietary regimens or exogenous ketone body supplementation, a possibility with significant implications for regenerative medicine. In this review we discuss recent findings of the mechanisms by which ketone bodies could influence adult stem cells, including ketogenesis in adult stem cells, uptake and transport of circulating ketone bodies, receptor-mediated signaling, and changes to cellular metabolism. We also discuss the potential effects of ketone bodies on intracellular processes such as protein acetylation and post-transcriptional control of gene expression. The exploration of mechanisms underlying the effects of ketone bodies on stem cell function reveals potential therapeutic targets for tissue regeneration and age-related diseases and suggests future research directions in the field of ketone bodies and stem cells.
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Affiliation(s)
- Ole Emil Andersen
- Department of Public Health, Aarhus University, Aarhus, Denmark
- Steno Diabetes Center Aarhus, Aarhus University, Aarhus, Denmark
| | | | - Jean Farup
- Steno Diabetes Center Aarhus, Aarhus University, Aarhus, Denmark
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
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22
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Wu Y, Hao S, Xu X, Dong G, Ouyang W, Liu C, Sun HX. A novel computational method enables RNA editome profiling during human hematopoiesis from scRNA-seq data. Sci Rep 2023; 13:10335. [PMID: 37365211 DOI: 10.1038/s41598-023-37325-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Accepted: 06/20/2023] [Indexed: 06/28/2023] Open
Abstract
RNA editing is a post-transcriptional modification with a cell-specific manner and important biological implications. Although single-cell RNA-seq (scRNA-seq) is an effective method for studying cellular heterogeneity, it is difficult to detect and study RNA editing events from scRNA-seq data because of the low sequencing coverage. To overcome this, we develop a computational method to systematically identify RNA editing sites of cell types from scRNA-seq data. To demonstrate its effectiveness, we apply it to scRNA-seq data of human hematopoietic stem/progenitor cells (HSPCs) with an annotated lineage differentiation relationship according to previous research and study the impacts of RNA editing on hematopoiesis. The dynamic editing patterns reveal the relevance of RNA editing on different HSPCs. For example, four microRNA (miRNA) target sites on 3' UTR of EIF2AK2 are edited across all HSPC populations, which may abolish the miRNA-mediated inhibition of EIF2AK2. Elevated EIF2AK2 may thus activate the integrated stress response (ISR) pathway to initiate global translational attenuation as a protective mechanism to maintain cellular homeostasis during HSPCs' differentiation. Besides, our findings also indicate that RNA editing plays an essential role in the coordination of lineage commitment and self-renewal of hematopoietic stem cells (HSCs). Taken together, we demonstrate the capacity of scRNA-seq data to exploit RNA editing events of cell types, and find that RNA editing may exert multiple modules of regulation in hematopoietic processes.
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Affiliation(s)
- Yan Wu
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
- BGI-Shenzhen, Shenzhen, 518083, China
- BGI-Beijing, Beijing, 102601, China
| | - Shijie Hao
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
- BGI-Shenzhen, Shenzhen, 518083, China
| | - Xiaojing Xu
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
- BGI-Shenzhen, Shenzhen, 518083, China
- BGI-Beijing, Beijing, 102601, China
| | - Guoyi Dong
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
- BGI-Shenzhen, Shenzhen, 518083, China
| | | | - Chao Liu
- BGI-Shenzhen, Shenzhen, 518083, China
| | - Hai-Xi Sun
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China.
- BGI-Shenzhen, Shenzhen, 518083, China.
- BGI-Beijing, Beijing, 102601, China.
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23
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de Morree A, Rando TA. Regulation of adult stem cell quiescence and its functions in the maintenance of tissue integrity. Nat Rev Mol Cell Biol 2023; 24:334-354. [PMID: 36922629 PMCID: PMC10725182 DOI: 10.1038/s41580-022-00568-6] [Citation(s) in RCA: 27] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/29/2022] [Indexed: 03/18/2023]
Abstract
Adult stem cells are important for mammalian tissues, where they act as a cell reserve that supports normal tissue turnover and can mount a regenerative response following acute injuries. Quiescent stem cells are well established in certain tissues, such as skeletal muscle, brain, and bone marrow. The quiescent state is actively controlled and is essential for long-term maintenance of stem cell pools. In this Review, we discuss the importance of maintaining a functional pool of quiescent adult stem cells, including haematopoietic stem cells, skeletal muscle stem cells, neural stem cells, hair follicle stem cells, and mesenchymal stem cells such as fibro-adipogenic progenitors, to ensure tissue maintenance and repair. We discuss the molecular mechanisms that regulate the entry into, maintenance of, and exit from the quiescent state in mice. Recent studies revealed that quiescent stem cells have a discordance between RNA and protein levels, indicating the importance of post-transcriptional mechanisms, such as alternative polyadenylation, alternative splicing, and translation repression, in the control of stem cell quiescence. Understanding how these mechanisms guide stem cell function during homeostasis and regeneration has important implications for regenerative medicine.
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Affiliation(s)
- Antoine de Morree
- Department of Neurology and Neurological Science, Stanford University School of Medicine, Stanford, CA, USA.
- Paul F. Glenn Center for the Biology of Aging, Stanford University School of Medicine, Stanford, CA, USA.
- Department of Biomedicine, Aarhus University, Aarhus, Denmark.
| | - Thomas A Rando
- Department of Neurology and Neurological Science, Stanford University School of Medicine, Stanford, CA, USA.
- Paul F. Glenn Center for the Biology of Aging, Stanford University School of Medicine, Stanford, CA, USA.
- Center for Tissue Regeneration, Repair, and Restoration, Veterans Affairs Palo Alto Health Care System, Palo Alto, CA, USA.
- Broad Stem Cell Research Center, University of California, Los Angeles, Los Angeles, CA, USA.
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24
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Wang Y, Sugimura R. Ex vivo expansion of hematopoietic stem cells. Exp Cell Res 2023; 427:113599. [PMID: 37061173 DOI: 10.1016/j.yexcr.2023.113599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 03/27/2023] [Accepted: 04/09/2023] [Indexed: 04/17/2023]
Abstract
Hematopoietic stem cells (HSCs) are multipotent progenitor cells that can differentiate into various mature blood cells and immune cells, thus reconstituting hematopoiesis. By taking advantage of the tremendous potential of HSCs, varied hereditary and hematologic diseases are promised to be alleviated or cured. To solve the contradiction between the growing demand for HSCs in disease treatment and the low population of HSCs in both cord blood and bone marrow, ex vivo HSC expansion along with multiple protocols has been investigated for harvesting adequate HSCs over the past two decades. This review surveys the state-of-the-art techniques for ex vivo HSC self-renewal and provides a concise summary of the effects of diverse intrinsic and extrinsic factors on the expansion of HSCs. The remaining challenges and emerging opportunities in the field of HSC expansion are also presented.
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Affiliation(s)
- Yuan Wang
- Centre for Translational Stem Cell Biology, Hong Kong
| | - Ryohichi Sugimura
- Centre for Translational Stem Cell Biology, Hong Kong; Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong.
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25
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Cohen PJR, Luquet E, Pletenka J, Leonard A, Warter E, Gurchenkov B, Carrere J, Rieu C, Hardouin J, Moncaubeig F, Lanero M, Quelennec E, Wurtz H, Jamet E, Demarco M, Banal C, Van Liedekerke P, Nassoy P, Feyeux M, Lefort N, Alessandri K. Engineering 3D micro-compartments for highly efficient and scale-independent expansion of human pluripotent stem cells in bioreactors. Biomaterials 2023; 295:122033. [PMID: 36764194 DOI: 10.1016/j.biomaterials.2023.122033] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2022] [Revised: 12/12/2022] [Accepted: 01/31/2023] [Indexed: 02/05/2023]
Abstract
Human pluripotent stem cells (hPSCs) have emerged as the most promising cellular source for cell therapies. To overcome the scale-up limitations of classical 2D culture systems, suspension cultures have been developed to meet the need for large-scale culture in regenerative medicine. Despite constant improvements, current protocols that use microcarriers or generate cell aggregates only achieve moderate amplification performance. Here, guided by reports showing that hPSCs can self-organize in vitro into cysts reminiscent of the epiblast stage in embryo development, we developed a physio-mimetic approach for hPSC culture. We engineered stem cell niche microenvironments inside microfluidics-assisted core-shell microcapsules. We demonstrate that lumenized three-dimensional colonies significantly improve viability and expansion rates while maintaining pluripotency compared to standard hPSC culture platforms such as 2D cultures, microcarriers, and aggregates. By further tuning capsule size and culture conditions, we scale up this method to industrial-scale stirred tank bioreactors and achieve an unprecedented hPSC amplification rate of 277-fold in 6.5 days. In brief, our findings indicate that our 3D culture system offers a suitable strategy both for basic stem cell biology experiments and for clinical applications.
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Affiliation(s)
- Philippe J R Cohen
- Université Paris Cité, Imagine Institute, IPSC Core Facility, INSERM UMR U1163, F-75015, Paris, France; Treefrog Therapeutics, F-33600, Pessac, France.
| | | | | | | | | | | | | | | | | | | | | | - Eddy Quelennec
- Université Paris Cité, Imagine Institute, IPSC Core Facility, INSERM UMR U1163, F-75015, Paris, France; Treefrog Therapeutics, F-33600, Pessac, France
| | | | | | | | - Celine Banal
- Université Paris Cité, Imagine Institute, IPSC Core Facility, INSERM UMR U1163, F-75015, Paris, France
| | - Paul Van Liedekerke
- Inria Paris & Sorbonne Université LJLL, 2 Rue Simone IFF, F-75012, Paris, France
| | - Pierre Nassoy
- LP2N, Laboratoire Photonique Numérique et Nanosciences, Univ. Bordeaux, F-33400, Talence, France; Institut D'Optique Graduate School & CNRS UMR 5298, F-33400, Talence, France
| | | | - Nathalie Lefort
- Université Paris Cité, Imagine Institute, IPSC Core Facility, INSERM UMR U1163, F-75015, Paris, France
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26
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Gillespie MS, Ward CM, Davies CC. DNA Repair and Therapeutic Strategies in Cancer Stem Cells. Cancers (Basel) 2023; 15:1897. [PMID: 36980782 PMCID: PMC10047301 DOI: 10.3390/cancers15061897] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 03/18/2023] [Accepted: 03/20/2023] [Indexed: 03/30/2023] Open
Abstract
First-line cancer treatments successfully eradicate the differentiated tumour mass but are comparatively ineffective against cancer stem cells (CSCs), a self-renewing subpopulation thought to be responsible for tumour initiation, metastasis, heterogeneity, and recurrence. CSCs are thus presented as the principal target for elimination during cancer treatment. However, CSCs are challenging to drug target because of numerous intrinsic and extrinsic mechanisms of drug resistance. One such mechanism that remains relatively understudied is the DNA damage response (DDR). CSCs are presumed to possess properties that enable enhanced DNA repair efficiency relative to their highly proliferative bulk progeny, facilitating improved repair of double-strand breaks induced by radiotherapy and most chemotherapeutics. This can occur through multiple mechanisms, including increased expression and splicing fidelity of DNA repair genes, robust activation of cell cycle checkpoints, and elevated homologous recombination-mediated DNA repair. Herein, we summarise the current knowledge concerning improved genome integrity in non-transformed stem cells and CSCs, discuss therapeutic opportunities within the DDR for re-sensitising CSCs to genotoxic stressors, and consider the challenges posed regarding unbiased identification of novel DDR-directed strategies in CSCs. A better understanding of the DDR mediating chemo/radioresistance mechanisms in CSCs could lead to novel therapeutic approaches, thereby enhancing treatment efficacy in cancer patients.
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Affiliation(s)
- Matthew S. Gillespie
- Institute of Cancer and Genomic Sciences, University of Birmingham, Birmingham B15 2TT, UK; (M.S.G.)
- School of Cancer Sciences, University of Southampton, Southampton SO16 6YD, UK
| | - Ciara M. Ward
- Institute of Cancer and Genomic Sciences, University of Birmingham, Birmingham B15 2TT, UK; (M.S.G.)
| | - Clare C. Davies
- Institute of Cancer and Genomic Sciences, University of Birmingham, Birmingham B15 2TT, UK; (M.S.G.)
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27
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Abstract
Cardiovascular diseases are a group of heart and blood vessel disorders which remain a leading cause of morbidity and mortality worldwide. Currently, cardiovascular disease research commonly depends on in vivo rodent models and in vitro human cell culture models. Despite their widespread use in cardiovascular disease research, there are some long-standing limitations: animal models often fail to faithfully mimic human response, while traditional cell models ignore the in vivo microenvironment, intercellular communications, and tissue-tissue interactions. The convergence of microfabrication and tissue engineering has given rise to organ-on-a-chip technologies. The organ-on-a-chip is a microdevice containing microfluidic chips, cells, and extracellular matrix to reproduce the physiological processes of a certain part of the human body, and is nowadays considered a promising bridge between in vivo models and in vitro 2D or 3D cell culture models. Considering the difficulty in obtaining human vessel and heart samples, the development of vessel-on-a-chip and heart-on-a-chip systems can guide cardiovascular disease research in the future. In this review, we elaborate methods and materials to fabricate organ-on-a-chip systems and summarize the construction of vessel and heart chips. The construction of vessels-on-a-chip must consider the cyclic mechanical stretch and fluid shear stress, while hemodynamic forces and cardiomyocyte maturation are key factors in building hearts-on-a-chip. We also introduce the application of organs-on-a-chip in cardiovascular disease study.
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28
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Borsi G, Motheramgari K, Dhiman H, Baumann M, Sinkala E, Sauerland M, Riba J, Borth N. Single-cell RNA sequencing reveals homogeneous transcriptome patterns and low variance in a suspension CHO-K1 and an adherent HEK293FT cell line in culture conditions. J Biotechnol 2023; 364:13-22. [PMID: 36708997 DOI: 10.1016/j.jbiotec.2023.01.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Revised: 01/15/2023] [Accepted: 01/21/2023] [Indexed: 01/27/2023]
Abstract
Recombinant mammalian host cell lines, in particular CHO and HEK293 cells, are used for the industrial production of therapeutic proteins. Despite their well-known genomic instability, the control mechanisms that enable cells to respond to changes in the environmental conditions are not yet fully understood, nor do we have a good understanding of the factors that lead to phenotypic shifts in long-term cultures. A contributing factor could be inherent diversity in transcriptomes within a population. In this study, we used a full-length coverage single-cell RNA sequencing (scRNA-seq) approach to investigate and compare cell-to-cell variability and the impact of standardized and homogenous culture conditions on the diversity of individual cell transcriptomes, comparing suspension CHO-K1 and adherent HEK293FT cells. Our data showed a critical batch effect from the sequencing of four 96-well plates of CHO-K1 single cells stored for different periods of time, which was and may be therefore identified as a technical variable to consider in experimental planning. Besides, in an artificial and controlled culture environment such as used in routine cell culture technology, the gene expression pattern of a given population does not reveal any marker gene capable to disclose relevant cell population substructures, both for CHO-K1 cells and for HEK293FT cells. The variation observed is primarily driven by the cell cycle.
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Affiliation(s)
- Giulia Borsi
- BOKU University of Natural Resources and Life Sciences, Institute of Animal Cell Technology and Systems Biology, Muthgasse 18, 1190, Vienna, Austria
| | - Krishna Motheramgari
- Austrian Centre of Industrial Biotechnology (acib GmbH), Muthgasse 11, 1190, Vienna, Austria
| | - Heena Dhiman
- Austrian Centre of Industrial Biotechnology (acib GmbH), Muthgasse 11, 1190, Vienna, Austria
| | - Martina Baumann
- Austrian Centre of Industrial Biotechnology (acib GmbH), Muthgasse 11, 1190, Vienna, Austria
| | | | | | | | - Nicole Borth
- BOKU University of Natural Resources and Life Sciences, Institute of Animal Cell Technology and Systems Biology, Muthgasse 18, 1190, Vienna, Austria.
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Patel B, Zhou Y, Babcock RL, Ma F, Zal MA, Kumar D, Medik YB, Kahn LM, Pineda JE, Park EM, Tang X, Raso MG, Zal T, Clise-Dwyer K, Giancotti FG, Colla S, Watowich SS. STAT3 protects HSCs from intrinsic interferon signaling and loss of long-term blood-forming activity. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.02.10.528069. [PMID: 36798265 PMCID: PMC9934695 DOI: 10.1101/2023.02.10.528069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
STAT3 function in hematopoietic stem and progenitor cells (HSPCs) has been difficult to discern as Stat3 deficiency in the hematopoietic system induces systemic inflammation, which can impact HSPC activity. To address this, we established mixed bone marrow (BM) chimeric mice with CreER-mediated Stat3 deletion in 20% of the hematopoietic compartment. Stat3-deficient HSPCs had impaired hematopoietic activity and failed to undergo expansion in BM in contrast to Stat3-sufficient (CreER) controls. Single-cell RNA sequencing of Lin-ckit+Sca1+ BM cells revealed altered transcriptional responses in Stat3-deficient hematopoietic stem cells (HSCs) and multipotent progenitors, including intrinsic activation of cell cycle, stress response, and interferon signaling pathways. Consistent with their deregulation, Stat3-deficient Lin-ckit+Sca1+ cells accumulated γH2AX over time. Following secondary BM transplantation, Stat3-deficient HSPCs failed to reconstitute peripheral blood effectively, indicating a severe functional defect in the HSC compartment. Our results reveal essential roles for STAT3 in HSCs and suggest the potential for using targeted synthetic lethal approaches with STAT3 inhibition to remove defective or diseased HSPCs.
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Affiliation(s)
- Bhakti Patel
- Department of Immunology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Yifan Zhou
- Department of Immunology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Rachel L. Babcock
- Department of Immunology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
- MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, Houston, TX, USA
| | - Feiyang Ma
- Molecular Biology Institute, University of California, Los Angeles, Los Angeles, CA, USA
- Division of Rheumatology, Department of Internal Medicine, Michigan Medicine, University of Michigan, Ann Arbor, MI, USA
| | - Malgorzata A. Zal
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Dhiraj Kumar
- Herbert Irving Cancer Center and Department of Genetics and Development, Columbia University, New York, NY, USA
| | - Yusra B. Medik
- Department of Immunology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Laura M. Kahn
- Department of Immunology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
- MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, Houston, TX, USA
| | - Josué E. Pineda
- Department of Immunology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
- MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, Houston, TX, USA
| | - Elizabeth M. Park
- Department of Immunology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Ximing Tang
- Department of Translational Molecular Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Maria Gabriela Raso
- Department of Translational Molecular Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Tomasz Zal
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Karen Clise-Dwyer
- Department of Stem Cell Transplantation and Hematopoietic Biology and Malignancy, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Filippo G. Giancotti
- Herbert Irving Cancer Center and Department of Genetics and Development, Columbia University, New York, NY, USA
| | - Simona Colla
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Stephanie S. Watowich
- Department of Immunology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
- MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, Houston, TX, USA
- Program for Innovative Microbiome and Translational Research (PRIME-TR), The University of Texas MD Anderson Cancer Center, Houston, TX, US
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30
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Madrigal P, Deng S, Feng Y, Militi S, Goh KJ, Nibhani R, Grandy R, Osnato A, Ortmann D, Brown S, Pauklin S. Epigenetic and transcriptional regulations prime cell fate before division during human pluripotent stem cell differentiation. Nat Commun 2023; 14:405. [PMID: 36697417 PMCID: PMC9876972 DOI: 10.1038/s41467-023-36116-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 01/17/2023] [Indexed: 01/26/2023] Open
Abstract
Stem cells undergo cellular division during their differentiation to produce daughter cells with a new cellular identity. However, the epigenetic events and molecular mechanisms occurring between consecutive cell divisions have been insufficiently studied due to technical limitations. Here, using the FUCCI reporter we developed a cell-cycle synchronised human pluripotent stem cell (hPSC) differentiation system for uncovering epigenome and transcriptome dynamics during the first two divisions leading to definitive endoderm. We observed that transcription of key differentiation markers occurs before cell division, while chromatin accessibility analyses revealed the early inhibition of alternative cell fates. We found that Activator protein-1 members controlled by p38/MAPK signalling are necessary for inducing endoderm while blocking cell fate shifting toward mesoderm, and that enhancers are rapidly established and decommissioned between different cell divisions. Our study has practical biomedical utility for producing hPSC-derived patient-specific cell types since p38/MAPK induction increased the differentiation efficiency of insulin-producing pancreatic beta-cells.
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Affiliation(s)
- Pedro Madrigal
- Department of Surgery, University of Cambridge, Cambridge, CB2 0QQ, UK
- Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, CB10 1SA, UK
- Wellcome - MRC Cambridge Stem Cell Institute, University of Cambridge, Cambridge, CB2 0SZ, UK
- European Molecular Biology Laboratory, European Bioinformatics Institute, Wellcome Genome Campus, Hinxton, CB10 1SD, UK
| | - Siwei Deng
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, Old Road, University of Oxford, Headington, Oxford, OX3 7LD, UK
| | - Yuliang Feng
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, Old Road, University of Oxford, Headington, Oxford, OX3 7LD, UK
| | - Stefania Militi
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, Old Road, University of Oxford, Headington, Oxford, OX3 7LD, UK
| | - Kim Jee Goh
- Department of Surgery, University of Cambridge, Cambridge, CB2 0QQ, UK
- The Francis Crick Institute, London, NW1 1AT, UK
| | - Reshma Nibhani
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, Old Road, University of Oxford, Headington, Oxford, OX3 7LD, UK
| | - Rodrigo Grandy
- Department of Surgery, University of Cambridge, Cambridge, CB2 0QQ, UK
| | - Anna Osnato
- Department of Surgery, University of Cambridge, Cambridge, CB2 0QQ, UK
| | - Daniel Ortmann
- Department of Surgery, University of Cambridge, Cambridge, CB2 0QQ, UK
| | - Stephanie Brown
- Department of Surgery, University of Cambridge, Cambridge, CB2 0QQ, UK
| | - Siim Pauklin
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, Old Road, University of Oxford, Headington, Oxford, OX3 7LD, UK.
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31
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Detection of De Novo Dividing Stem Cells In Situ through Double Nucleotide Analogue Labeling. Cells 2022; 11:cells11244001. [PMID: 36552766 PMCID: PMC9777310 DOI: 10.3390/cells11244001] [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: 10/19/2022] [Revised: 11/18/2022] [Accepted: 12/07/2022] [Indexed: 12/14/2022] Open
Abstract
Tissue-specific somatic stem cells are characterized by their ability to reside in a state of prolonged reversible cell cycle arrest, referred to as quiescence. Maintenance of a balance between cell quiescence and division is critical for tissue homeostasis at the cellular level and is dynamically regulated by numerous extrinsic and intrinsic factors. Analysis of the activation of quiescent stem cells has been challenging because of a lack of methods for direct detection of de novo dividing cells. Here, we present and experimentally verify a novel method based on double labeling with thymidine analogues to detect de novo dividing stem cells in situ. In a proof of concept for the method, we show that memantine, a drug widely used for Alzheimer's disease therapy and a known strong inducer of adult hippocampal neurogenesis, increases the recruitment into the division cycle of quiescent radial glia-like stem cells-primary precursors of the adult-born neurons in the hippocampus. Our method could be applied to assess the effects of aging, pathology, or drug treatments on the quiescent stem cells in stem cell compartments in developing and adult tissues.
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Ervin EH, French R, Chang CH, Pauklin S. Inside the stemness engine: Mechanistic links between deregulated transcription factors and stemness in cancer. Semin Cancer Biol 2022; 87:48-83. [PMID: 36347438 DOI: 10.1016/j.semcancer.2022.11.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 10/22/2022] [Accepted: 11/03/2022] [Indexed: 11/07/2022]
Abstract
Cell identity is largely determined by its transcriptional profile. In tumour, deregulation of transcription factor expression and/or activity enables cancer cell to acquire a stem-like state characterised by capacity to self-renew, differentiate and form tumours in vivo. These stem-like cancer cells are highly metastatic and therapy resistant, thus warranting a more complete understanding of the molecular mechanisms downstream of the transcription factors that mediate the establishment of stemness state. Here, we review recent research findings that provide a mechanistic link between the commonly deregulated transcription factors and stemness in cancer. In particular, we describe the role of master transcription factors (SOX, OCT4, NANOG, KLF, BRACHYURY, SALL, HOX, FOX and RUNX), signalling-regulated transcription factors (SMAD, β-catenin, YAP, TAZ, AP-1, NOTCH, STAT, GLI, ETS and NF-κB) and unclassified transcription factors (c-MYC, HIF, EMT transcription factors and P53) across diverse tumour types, thereby yielding a comprehensive overview identifying shared downstream targets, highlighting unique mechanisms and discussing complexities.
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Affiliation(s)
- Egle-Helene Ervin
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Old Road, Headington, Oxford, OX3 7LD, United Kingdom.
| | - Rhiannon French
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Old Road, Headington, Oxford, OX3 7LD, United Kingdom.
| | - Chao-Hui Chang
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Old Road, Headington, Oxford, OX3 7LD, United Kingdom.
| | - Siim Pauklin
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Old Road, Headington, Oxford, OX3 7LD, United Kingdom.
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Iwata K, Ferdousi F, Arai Y, Isoda H. Interactions between Major Bioactive Polyphenols of Sugarcane Top: Effects on Human Neural Stem Cell Differentiation and Astrocytic Maturation. Int J Mol Sci 2022; 23:ijms232315120. [PMID: 36499441 PMCID: PMC9738893 DOI: 10.3390/ijms232315120] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/23/2022] [Accepted: 11/28/2022] [Indexed: 12/05/2022] Open
Abstract
Sugarcane (Saccharum officinarum L.) is a tropical plant grown for sugar production. We recently showed that sugarcane top (ST) ameliorates cognitive decline in a mouse model of accelerated aging via promoting neuronal differentiation and neuronal energy metabolism and extending the length of the astrocytic process in vitro. Since the crude extract consists of multicomponent mixtures, it is crucial to identify bioactive compounds of interest and the affected molecular targets. In the present study, we investigated the bioactivities of major polyphenols of ST, namely 3-O-caffeoylquinic acid (3CQA), 5-O-caffeoylquinic acid (5CQA), 3-O-feruloylquinic acid (3FQA), and Isoorientin (ISO), in human fetal neural stem cells (hNSCs)- an in vitro model system for studying neural development. We found that multiple polyphenols of ST contributed synergistically to stimulate neuronal differentiation of hNSCs and induce mitochondrial activity in immature astrocytes. Mono-CQAs (3CQA and 5CQA) regulated the expression of cyclins related to G1 cell cycle arrest, whereas ISO regulated basic helix-loop-helix transcription factors related to cell fate determination. Additionally, mono-CQAs activated p38 and ISO inactivated GSK3β. In hNSC-derived immature astrocytes, the compounds upregulated mRNA expression of PGC-1α, a master regulator of astrocytic mitochondrial biogenesis. Altogether, our findings suggest that synergistic interactions between major polyphenols of ST contribute to its potential for neuronal differentiation and astrocytic maturation.
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Affiliation(s)
- Kengo Iwata
- School of Integrative and Global Majors, University of Tsukuba, Tsukuba 305-8572, Japan
- Nipoo Co., Ltd., Osaka 574-0062, Japan
| | - Farhana Ferdousi
- Alliance for Research on the Mediterranean and North Africa (ARENA), University of Tsukuba, Tsukuba 305-8572, Japan
- AIST—University of Tsukuba Open Innovation Laboratory for Food and Medicinal Resource Engineering (FoodMed-OIL), Tsukuba 305-8572, Japan
| | | | - Hiroko Isoda
- School of Integrative and Global Majors, University of Tsukuba, Tsukuba 305-8572, Japan
- Alliance for Research on the Mediterranean and North Africa (ARENA), University of Tsukuba, Tsukuba 305-8572, Japan
- AIST—University of Tsukuba Open Innovation Laboratory for Food and Medicinal Resource Engineering (FoodMed-OIL), Tsukuba 305-8572, Japan
- Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba 305-8572, Japan
- Correspondence: ; Tel.: +81-29-853-5775
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Cruz LJ, Rezaei S, Grosveld F, Philipsen S, Eich C. Nanoparticles targeting hematopoietic stem and progenitor cells: Multimodal carriers for the treatment of hematological diseases. Front Genome Ed 2022; 4:1030285. [PMID: 36407494 PMCID: PMC9666682 DOI: 10.3389/fgeed.2022.1030285] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2022] [Accepted: 10/10/2022] [Indexed: 10/03/2023] Open
Abstract
Modern-day hematopoietic stem cell (HSC) therapies, such as gene therapy, modify autologous HSCs prior to re-infusion into myelo-conditioned patients and hold great promise for treatment of hematological disorders. While this approach has been successful in numerous clinical trials, it relies on transplantation of ex vivo modified patient HSCs, which presents several limitations. It is a costly and time-consuming procedure, which includes only few patients so far, and ex vivo culturing negatively impacts on the viability and stem cell-properties of HSCs. If viral vectors are used, this carries the additional risk of insertional mutagenesis. A therapy delivered to HSCs in vivo, with minimal disturbance of the HSC niche, could offer great opportunities for novel treatments that aim to reverse disease symptoms for hematopoietic disorders and could bring safe, effective and affordable genetic therapies to all parts of the world. However, substantial unmet needs exist with respect to the in vivo delivery of therapeutics to HSCs. In the last decade, in particular with the development of gene editing technologies such as CRISPR/Cas9, nanoparticles (NPs) have become an emerging platform to facilitate the manipulation of cells and organs. By employing surface modification strategies, different types of NPs can be designed to target specific tissues and cell types in vivo. HSCs are particularly difficult to target due to the lack of unique cell surface markers that can be utilized for cell-specific delivery of therapeutics, and their shielded localization in the bone marrow (BM). Recent advances in NP technology and genetic engineering have resulted in the development of advanced nanocarriers that can deliver therapeutics and imaging agents to hematopoietic stem- and progenitor cells (HSPCs) in the BM niche. In this review we provide a comprehensive overview of NP-based approaches targeting HSPCs to control and monitor HSPC activity in vitro and in vivo, and we discuss the potential of NPs for the treatment of malignant and non-malignant hematological disorders, with a specific focus on the delivery of gene editing tools.
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Affiliation(s)
- Luis J. Cruz
- Translational Nanobiomaterials and Imaging, Department of Radiology, Leiden University Medical Center, Leiden, Netherlands
| | - Somayeh Rezaei
- Translational Nanobiomaterials and Imaging, Department of Radiology, Leiden University Medical Center, Leiden, Netherlands
| | - Frank Grosveld
- Erasmus University Medical Center, Department of Cell Biology, Rotterdam, Netherlands
| | - Sjaak Philipsen
- Erasmus University Medical Center, Department of Cell Biology, Rotterdam, Netherlands
| | - Christina Eich
- Translational Nanobiomaterials and Imaging, Department of Radiology, Leiden University Medical Center, Leiden, Netherlands
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35
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Kralova B, Sochorcova L, Song J, Jahoda O, Hlusickova Kapralova K, Prchal JT, Divoky V, Horvathova M. Developmental changes in iron metabolism and erythropoiesis in mice with human gain-of-function erythropoietin receptor. Am J Hematol 2022; 97:1286-1299. [PMID: 35815815 DOI: 10.1002/ajh.26658] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Accepted: 07/05/2022] [Indexed: 01/24/2023]
Abstract
Iron availability for erythropoiesis is controlled by the iron-regulatory hormone hepcidin. Increased erythropoiesis negatively regulates hepcidin synthesis by erythroferrone (ERFE), a hormone produced by erythroid precursors in response to erythropoietin (EPO). The mechanisms coordinating erythropoietic activity with iron homeostasis in erythrocytosis with low EPO are not well defined as exemplified by dominantly inherited (heterozygous) gain-of-function mutation of human EPO receptor (mtHEPOR) with low EPO characterized by postnatal erythrocytosis. We previously created a mouse model of this mtHEPOR that develops fetal erythrocytosis with a transient perinatal amelioration of erythrocytosis and its reappearance at 3-6 weeks of age. Prenatally and perinatally, mtHEPOR heterozygous and homozygous mice (differing in erythrocytosis severity) had increased Erfe transcripts, reduced hepcidin, and iron deficiency. Epo was transiently normal in the prenatal life; then decreased at postnatal day 7, and remained reduced in adulthood. Postnatally, hepcidin increased in mtHEPOR heterozygotes and homozygotes, accompanied by low Erfe induction and iron accumulation. With aging, the old, especially mtHEPOR homozygotes had a decline of erythropoiesis, myeloid expansion, and local bone marrow inflammatory stress. In addition, mtHEPOR erythrocytes had a reduced lifespan. This, together with reduced iron demand for erythropoiesis, due to its age-related attenuation, likely contributes to increased iron deposition in the aged mtHEPOR mice. In conclusion, the erythroid drive-mediated inhibition of hepcidin production in mtHEPOR mice in the prenatal/perinatal period is postnatally abrogated by increasing iron stores promoting hepcidin synthesis. The differences observed in studied characteristics between mtHEPOR heterozygotes and homozygotes suggest dose-dependent alterations of downstream EPOR stimulation.
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Affiliation(s)
- Barbora Kralova
- Department of Biology, Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic
| | - Lucie Sochorcova
- Department of Biology, Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic
| | - Jihyun Song
- Division of Hematology & Hematologic Malignancies, The University of Utah School of Medicine, Salt Lake City, Utah, USA
| | - Ondrej Jahoda
- Department of Biology, Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic
| | | | - Josef T Prchal
- Division of Hematology & Hematologic Malignancies, The University of Utah School of Medicine, Salt Lake City, Utah, USA
| | - Vladimir Divoky
- Department of Biology, Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic
| | - Monika Horvathova
- Department of Biology, Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic
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36
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Jacobs K, Doerdelmann C, Krietsch J, González-Acosta D, Mathis N, Kushinsky S, Guarino E, Gómez-Escolar C, Martinez D, Schmid JA, Leary PJ, Freire R, Ramiro AR, Eischen CM, Mendez J, Lopes M. Stress-triggered hematopoietic stem cell proliferation relies on PrimPol-mediated repriming. Mol Cell 2022; 82:4176-4188.e8. [PMID: 36152632 DOI: 10.1016/j.molcel.2022.09.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 07/01/2022] [Accepted: 09/08/2022] [Indexed: 11/17/2022]
Abstract
Stem cell division is linked to tumorigenesis by yet-elusive mechanisms. The hematopoietic system reacts to stress by triggering hematopoietic stem and progenitor cell (HSPC) proliferation, which can be accompanied by chromosomal breakage in activated hematopoietic stem cells (HSCs). However, whether these lesions persist in their downstream progeny and induce a canonical DNA damage response (DDR) remains unclear. Inducing HSPC proliferation by simulated viral infection, we report that the associated DNA damage is restricted to HSCs and that proliferating HSCs rewire their DDR upon endogenous and clastogen-induced damage. Combining transcriptomics, single-cell and single-molecule assays on murine bone marrow cells, we found accelerated fork progression in stimulated HSPCs, reflecting engagement of PrimPol-dependent repriming, at the expense of replication fork reversal. Ultimately, competitive bone marrow transplantation revealed the requirement of PrimPol for efficient HSC amplification and bone marrow reconstitution. Hence, fine-tuning replication fork plasticity is essential to support stem cell functionality upon proliferation stimuli.
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Affiliation(s)
- Kurt Jacobs
- Institute of Molecular Cancer Research, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
| | - Cyril Doerdelmann
- Institute of Molecular Cancer Research, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
| | - Jana Krietsch
- Institute of Molecular Cancer Research, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
| | - Daniel González-Acosta
- Institute of Molecular Cancer Research, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland; DNA Replication Group, Molecular Oncology Programme, Spanish National Cancer Research Centre (CNIO), Melchor Fernández Almagro 3, 28029 Madrid, Spain
| | - Nicolas Mathis
- Institute of Molecular Cancer Research, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
| | - Saul Kushinsky
- Department of Cancer Biology, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA, USA
| | - Estrella Guarino
- DNA Replication Group, Molecular Oncology Programme, Spanish National Cancer Research Centre (CNIO), Melchor Fernández Almagro 3, 28029 Madrid, Spain
| | - Carmen Gómez-Escolar
- B Lymphocyte Biology Laboratory, Spanish National Center for Cardiovascular Research (CNIC), Melchor Fernández Almagro 3, 28029 Madrid, Spain
| | - Dolores Martinez
- Flow Cytometry Unit, Biotechnology Programme, Spanish National Cancer Research Centre (CNIO), Melchor Fernández Almagro 3, 28029 Madrid, Spain
| | - Jonas A Schmid
- Institute of Molecular Cancer Research, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
| | - Peter J Leary
- Institute of Molecular Cancer Research, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland; Functional Genomic Center Zurich, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
| | - Raimundo Freire
- Unidad de Investigación, Hospital Universitario de Canarias, Tenerife, Spain; Instituto de Tecnologías Biomédicas, Universidad de La Laguna, La Laguna, Spain; Universidad Fernando Pessoa Canarias, Las Palmas de Gran Canaria, Spain
| | - Almudena R Ramiro
- B Lymphocyte Biology Laboratory, Spanish National Center for Cardiovascular Research (CNIC), Melchor Fernández Almagro 3, 28029 Madrid, Spain
| | - Christine M Eischen
- Department of Cancer Biology, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA, USA
| | - Juan Mendez
- DNA Replication Group, Molecular Oncology Programme, Spanish National Cancer Research Centre (CNIO), Melchor Fernández Almagro 3, 28029 Madrid, Spain.
| | - Massimo Lopes
- Institute of Molecular Cancer Research, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland.
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Chang H, Wang Q, Meng X, Chen X, Deng Y, Li L, Yang Y, Song G, Jia H. Effect of Titanium Dioxide Nanoparticles on Mammalian Cell Cycle In Vitro: A Systematic Review and Meta-Analysis. Chem Res Toxicol 2022; 35:1435-1456. [PMID: 35998370 DOI: 10.1021/acs.chemrestox.1c00402] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Although most studies that explore the cytotoxicity of titanium dioxide nanoparticles (nano-TiO2) have focused on cell viability and oxidative stress, the cell cycle, a basic process of cell life, can also be affected. However, the results on the effects of nano-TiO2 on mammalian cell cycle are still inconsistent. A systematic review and meta-analysis were therefore performed in this research based on the effects of nano-TiO2 on the mammalian cell cycle in vitro to explore whether nano-TiO2 can induce cell cycle arrest. Meanwhile, the impact of physicochemical properties of nano-TiO2 on the cell cycle in vitro was investigated, and the response of normal cells and cancer cells was compared. A total of 33 articles met the eligibility criteria after screening. We used Review Manager 5.4 and Stata 15.1 for analysis. The results showed an increased percentage of cells in the sub-G1 phase and an upregulation of the p53 gene after being exposed to nano-TiO2. Nevertheless, nano-TiO2 had no effect on cell percentage in other phases of the cell cycle. Furthermore, subgroup analysis revealed that the cell percentage in both the sub-G1 phase of normal cells and S phase of cancer cells were significantly increased under anatase-form nano-TiO2 treatment. Moreover, nano-TiO2 with a particle size <25 nm or exposure duration of nano-TiO2 more than 24 h induced an increased percentage of normal cells in the sub-G1 phase. In addition, the cell cycle of cancer cells was arrested in the S phase no matter if the exposure duration of nano-TiO2 was more than 24 h or the exposure concentration was over 50 μg/mL. In conclusion, this study demonstrated that nano-TiO2 disrupted the cell cycle in vitro. The cell cycle arrest induced by nano-TiO2 varies with cell status and physicochemical properties of nano-TiO2.
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Affiliation(s)
- Hongmei Chang
- Department of Preventive Medicine/the Key Laboratories for Xinjiang Endemic and Ethnic Diseases, School of Medicine, Shihezi University, Shihezi 832003, Xinjiang, China
| | - Qianqian Wang
- Department of Preventive Medicine/the Key Laboratories for Xinjiang Endemic and Ethnic Diseases, School of Medicine, Shihezi University, Shihezi 832003, Xinjiang, China
| | - Xiaojia Meng
- Department of Preventive Medicine/the Key Laboratories for Xinjiang Endemic and Ethnic Diseases, School of Medicine, Shihezi University, Shihezi 832003, Xinjiang, China
| | - Xinyu Chen
- Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, 210019 Nanjing, China
| | - Yaxin Deng
- Department of Preventive Medicine/the Key Laboratories for Xinjiang Endemic and Ethnic Diseases, School of Medicine, Shihezi University, Shihezi 832003, Xinjiang, China
| | - Li Li
- Department of Preventive Medicine/the Key Laboratories for Xinjiang Endemic and Ethnic Diseases, School of Medicine, Shihezi University, Shihezi 832003, Xinjiang, China
| | - Yaqian Yang
- Department of Preventive Medicine/the Key Laboratories for Xinjiang Endemic and Ethnic Diseases, School of Medicine, Shihezi University, Shihezi 832003, Xinjiang, China
| | - Guanling Song
- Department of Preventive Medicine/the Key Laboratories for Xinjiang Endemic and Ethnic Diseases, School of Medicine, Shihezi University, Shihezi 832003, Xinjiang, China
| | - Huaimiao Jia
- Department of Endemic Disease, Shihezi Center for Disease Control and Prevention, Shihezi 832003, Xinjiang, China
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Effect of Fumonisin B1 on Proliferation and Apoptosis of Intestinal Porcine Epithelial Cells. Toxins (Basel) 2022; 14:toxins14070471. [PMID: 35878209 PMCID: PMC9323054 DOI: 10.3390/toxins14070471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 06/29/2022] [Accepted: 07/01/2022] [Indexed: 11/30/2022] Open
Abstract
Fumonisin B1 (FB1), which is a mycotoxin produced by Fusarium moniliforme and Fusarium rotarum, has a number of toxic effects in animals. Moldy feed containing FB1 can damage the intestine. In this study, we used intestinal porcine epithelial cells (IPEC-J2) as an in vitro model to explore the effects of FB1 on cell cycle and apoptosis. The results showed that IPEC-J2 cells treated with 10, 20, and 40 μg/mL FB1 for 48 h experienced different degrees of damage manifested as decreases in cell number and viability, as well as cell shrinkage and floating. In addition, FB1 reduced cell proliferation and the mRNA and protein expression of proliferating cell nuclear antigen (PCNA), cyclin-dependent kinase 2 (CDK2), CDK4, cyclinD1, and cyclinE1. FB1 blocked the cell cycle in the G1 phase. FB1 also induced mitochondrial pathway apoptosis, reduced mitochondrial membrane potential, and promoted mRNA and protein expression of Caspase3, Caspase9, and Bax. The findings suggest that FB1 can induce IPEC-J2 cell damage, block the cell cycle, and promote cell apoptosis.
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39
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The Mesenchymal Niche in Myelodysplastic Syndromes. Diagnostics (Basel) 2022; 12:diagnostics12071639. [PMID: 35885544 PMCID: PMC9320414 DOI: 10.3390/diagnostics12071639] [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: 06/03/2022] [Revised: 06/22/2022] [Accepted: 06/24/2022] [Indexed: 11/16/2022] Open
Abstract
Myelodysplastic syndromes (MDSs) are clonal disorders characterized by ineffective hematopoiesis, resulting in cytopenias and a risk of developing acute myeloid leukemia. In addition to mutations affecting hematopoietic stem cells (HSCs), numerous studies have highlighted the role of the bone marrow microenvironment (BMME) in the development of MDSs. The mesenchymal niche represents a key component of the BMME. In this review, we discuss the role of the mesenchymal niche in the pathophysiology of MDS and provide an overview of currently available in vitro and in vivo models that can be used to study the effects of the mesenchymal niche on HSCs.
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40
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Timilsina S, Kirsch-Mangu T, Werth S, Shepard B, Ma T, Villa-Diaz LG. Enhanced self-renewal of human pluripotent stem cells by simulated microgravity. NPJ Microgravity 2022; 8:22. [PMID: 35787634 PMCID: PMC9253108 DOI: 10.1038/s41526-022-00209-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Accepted: 06/22/2022] [Indexed: 11/19/2022] Open
Abstract
A systematic study on the biological effects of simulated microgravity (sµg) on human pluripotent stem cells (hPSC) is still lacking. Here, we used a fast-rotating 2-D clinostat to investigate the sµg effect on proliferation, self-renewal, and cell cycle regulation of hPSCs. We observed significant upregulation of protein translation of pluripotent transcription factors in hPSC cultured in sµg compared to cells cultured in 1g conditions. In addition to a significant increase in expression of telomere elongation genes. Differentiation experiments showed that hPSC cultured in sµg condition were less susceptible to differentiation compared to cells in 1g conditions. These results suggest that sµg enhances hPSC self-renewal. Our study revealed that sµg enhanced the cell proliferation of hPSCs by regulating the expression of cell cycle-associated kinases. RNA-seq analysis indicated that in sµg condition the expression of differentiation and development pathways are downregulated, while multiple components of the ubiquitin proteasome system are upregulated, contributing to an enhanced self-renewal of hPSCs. These effects of sµg were not replicated in human fibroblasts. Taken together, our results highlight pathways and mechanisms in hPSCs vulnerable to microgravity that imposes significant impacts on human health and performance, physiology, and cellular and molecular processes.
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Affiliation(s)
- S Timilsina
- Department of Biological Sciences, Oakland University, Rochester, MI, 48309, USA
| | - T Kirsch-Mangu
- Department of Biological Sciences, Oakland University, Rochester, MI, 48309, USA
| | - S Werth
- Department of Biological Sciences, Oakland University, Rochester, MI, 48309, USA
| | - B Shepard
- Department of Biological Sciences, Oakland University, Rochester, MI, 48309, USA
| | - T Ma
- Department of Computer Science, Engineering, Oakland University, Rochester, MI, 48309, USA
| | - L G Villa-Diaz
- Department of Biological Sciences, Oakland University, Rochester, MI, 48309, USA. .,Department of Bioengineering, Oakland University, Rochester, MI, 48309, USA.
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41
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Ubiquitin-Specific Protease 22 Promotes Neural Stem Cells Stemness Maintenance and Adult Hippocampal Neurogenesis, Contributing to Cognitive Recovery Following Traumatic Brain Injury. Neuroscience 2022; 496:219-229. [PMID: 35700816 DOI: 10.1016/j.neuroscience.2022.06.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2021] [Revised: 06/04/2022] [Accepted: 06/07/2022] [Indexed: 11/21/2022]
Abstract
Ubiquitin-specific protease 22 (USP22), a potential marker of cancer stem cells, significantly influences stem cell fate choices. However, its functions in neural stem cells (NSCs) and adult neurogenesis, especially following traumatic brain injury (TBI), remain only partially understood. Here, we found that aberrant USP22 expression could affect NSC proliferation and stemness maintenance, as assessed by the generation of neurospheres, cell counting kit-8 (CCK-8) and immunofluorescence staining in vitro. Moreover, USP22 depletion promotes the differentiation of NSCs, both in vitro and in vivo. In contrast, USP22 overexpression inhibits NSC differentiation into neurons. Interestingly, our data showed that USP22 promotes the proliferation but inhibits the differentiation of NSCs in the dentate gyrus (DG)of the hippocampus soon after TBI. The Morris water maze (MWM) test was adopted to evaluate neurological function, which confirmed that USP22 could improve the learning and memory capacity that was already compromised following TBI. Overall, this study uncovers a potentially novel regulatory role of USP22 in the proliferation and differentiation ability of NSCs, contributing to the hippocampus-dependent cognitive function of TBI mice and may be a novel target for future therapeutic approaches.
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42
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Alza L, Visa A, Herreros J, Cantí C. T-type channels in cancer cells: Driving in reverse. Cell Calcium 2022; 105:102610. [PMID: 35691056 DOI: 10.1016/j.ceca.2022.102610] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 06/01/2022] [Accepted: 06/04/2022] [Indexed: 11/30/2022]
Abstract
In the strongly polarized membranes of excitable cells, activation of T-type Ca2+ channels (TTCCs) by weak depolarizing stimuli allows the influx of Ca2+ which further amplifies membrane depolarization, thus "recruiting" higher threshold voltage-gated channels to promote action potential firing. Nonetheless, TTCCs perform other functions in the plasma membrane of both excitable and non-excitable cells, in which they regulate a number of biochemical pathways relevant for cell cycle and cell fate. Furthermore, data obtained in the last 20 years have shown the involvement of TTCCs in tumor biology, designating them as promising chemotherapeutic targets. However, their activity in the steadily-depolarized membranes of cancer cells, in which most voltage-gated channels are in the inactivated (nonconducting) state, is counter-intuitive. Here we discuss that in cancer cells weak hyperpolarizing stimuli increase the fraction of open TTCCs which, in association with Ca2+-dependent K+ channels, may critically boost membrane hyperpolarization and driving force for Ca2+ entry through different voltage-independent Ca2+ channels. Available evidence also shows that TTCCs participate in positive feedback circuits with signaling effectors, which may warrant a switch-like activation of pro-proliferative and pro-survival pathways in spite of their low availability. Unravelling TTCC modus operandi in the context of non-excitable membranes may facilitate the development of novel anticancer approaches.
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Affiliation(s)
- Lía Alza
- Universitat de Lleida (Dpt. Medicina Experimental), IRBLleida, Rovira Roure 80, Lleida 25198, Spain
| | - Anna Visa
- Universitat de Lleida (Dpt. Medicina Experimental), IRBLleida, Rovira Roure 80, Lleida 25198, Spain
| | - Judit Herreros
- Universitat de Lleida (Dpt. Ciències Mèdiques Bàsiques), IRBLleida
| | - Carles Cantí
- Universitat de Lleida (Dpt. Medicina Experimental), IRBLleida, Rovira Roure 80, Lleida 25198, Spain.
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43
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Symbiosis with Dinoflagellates Alters Cnidarian Cell-Cycle Gene Expression. Cell Microbiol 2022. [DOI: 10.1155/2022/3330160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
In the cnidarian-dinoflagellate symbiosis, hosts show altered expression of genes involved in growth and proliferation when in the symbiotic state, but little is known about the molecular mechanisms that underlie the host’s altered growth rate. Using tissue-specific transcriptomics, we determined how symbiosis affects expression of cell cycle-associated genes, in the model symbiotic cnidarian Exaiptasia diaphana (Aiptasia). The presence of symbionts within the gastrodermis elicited cell-cycle arrest in the G1 phase in a larger proportion of host cells compared with the aposymbiotic gastrodermis. The symbiotic gastrodermis also showed a reduction in the amount of cells synthesizing their DNA and progressing through mitosis when compared with the aposymbiotic gastrodermis. Host apoptotic inhibitors (Mdm2) were elevated, while host apoptotic sensitizers (c-Myc) were depressed, in the symbiotic gastrodermis when compared with the aposymbiotic gastrodermis and epidermis of symbiotic anemones, respectively. This indicates that the presence of symbionts negatively regulates host apoptosis, possibly contributing to their persistence within the host. Transcripts (ATM/ATR) associated with DNA damage were also downregulated in symbiotic gastrodermal tissues. In epidermal cells, a single gene (Mob1) required for mitotic completion was upregulated in symbiotic compared with aposymbiotic anemones, suggesting that the presence of symbionts in the gastrodermis stimulates host cell division in the epidermis. To further corroborate this hypothesis, we performed microscopic analysis using an S-phase indicator (EdU), allowing us to evaluate cell cycling in host cells. Our results confirmed that there were significantly more proliferating host cells in both the gastrodermis and epidermis in the symbiotic state compared with the aposymbiotic state. Furthermore, when comparing between tissue layers in the presence of symbionts, the epidermis had significantly more proliferating host cells than the symbiont-containing gastrodermis. These results contribute to our understanding of the influence of symbionts on the mechanisms of cnidarian cell proliferation and mechanisms associated with symbiont maintenance.
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44
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Perazza LR, Brown-Borg HM, Thompson LV. Physiological Systems in Promoting Frailty. Compr Physiol 2022; 12:3575-3620. [PMID: 35578945 DOI: 10.1002/cphy.c210034] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Frailty is a complex syndrome affecting a growing sector of the global population as medical developments have advanced human mortality rates across the world. Our current understanding of frailty is derived from studies conducted in the laboratory as well as the clinic, which have generated largely phenotypic information. Far fewer studies have uncovered biological underpinnings driving the onset and progression of frailty, but the stage is set to advance the field with preclinical and clinical assessment tools, multiomics approaches together with physiological and biochemical methodologies. In this article, we provide comprehensive coverage of topics regarding frailty assessment, preclinical models, interventions, and challenges as well as clinical frameworks and prevalence. We also identify central biological mechanisms that may be at play including mitochondrial dysfunction, epigenetic alterations, and oxidative stress that in turn, affect metabolism, stress responses, and endocrine and neuromuscular systems. We review the role of metabolic syndrome, insulin resistance and visceral obesity, focusing on glucose homeostasis, adenosine monophosphate-activated protein kinase (AMPK), mammalian target of rapamycin (mTOR), and nicotinamide adenine dinucleotide (NAD+ ) as critical players influencing the age-related loss of health. We further focus on how immunometabolic dysfunction associates with oxidative stress in promoting sarcopenia, a key contributor to slowness, weakness, and fatigue. We explore the biological mechanisms involved in stem cell exhaustion that affect regeneration and may contribute to the frailty-associated decline in resilience and adaptation to stress. Together, an overview of the interplay of aging biology with genetic, lifestyle, and environmental factors that contribute to frailty, as well as potential therapeutic targets to lower risk and slow the progression of ongoing disease is covered. © 2022 American Physiological Society. Compr Physiol 12:1-46, 2022.
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Affiliation(s)
- Laís R Perazza
- Department of Physical Therapy and Athletic Training, Boston University, Boston, Massachusetts, USA
| | - Holly M Brown-Borg
- Department of Biomedical Sciences, University of North Dakota, Grand Forks, North Dakota, USA
| | - LaDora V Thompson
- Department of Physical Therapy and Athletic Training, Boston University, Boston, Massachusetts, USA
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45
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Arinda BN, Innabi YA, Grasis JA, Oviedo NJ. Non-traditional roles of immune cells in regeneration: an evolutionary perspective. Development 2022; 149:275269. [PMID: 35502784 PMCID: PMC9124569 DOI: 10.1242/dev.199903] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Immune cells are known to engage in pathogen defense. However, emerging research has revealed additional roles for immune cells, which are independent of their function in the immune response. Here, we underscore the ability of cells outside of the adaptive immune system to respond to recurring infections through the lens of evolution and cellular memory. With this in mind, we then discuss the bidirectional crosstalk between the immune cells and stem cells and present examples where these interactions regulate tissue repair and regeneration. We conclude by suggesting that comprehensive analyses of the immune system may enable biomedical applications in stem cell biology and regenerative medicine.
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Affiliation(s)
- Beryl N Arinda
- Department of Molecular and Cell Biology, University of California, Merced, CA 95343, USA.,Quantitative and Systems Biology Graduate Program, University of California, Merced, CA 95343, USA
| | - Yacoub A Innabi
- Department of Molecular and Cell Biology, University of California, Merced, CA 95343, USA.,Quantitative and Systems Biology Graduate Program, University of California, Merced, CA 95343, USA
| | - Juris A Grasis
- Department of Molecular and Cell Biology, University of California, Merced, CA 95343, USA.,Health Sciences Research Institute, University of California, Merced, CA 95343, USA
| | - Néstor J Oviedo
- Department of Molecular and Cell Biology, University of California, Merced, CA 95343, USA.,Health Sciences Research Institute, University of California, Merced, CA 95343, USA
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46
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Mooli RGR, Mukhi D, Ramakrishnan SK. Oxidative Stress and Redox Signaling in the Pathophysiology of Liver Diseases. Compr Physiol 2022; 12:3167-3192. [PMID: 35578969 PMCID: PMC10074426 DOI: 10.1002/cphy.c200021] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The increased production of derivatives of molecular oxygen and nitrogen in the form of reactive oxygen species (ROS) and reactive nitrogen species (RNS) lead to molecular damage called oxidative stress. Under normal physiological conditions, the ROS generation is tightly regulated in different cells and cellular compartments. Any disturbance in the balance between the cellular generation of ROS and antioxidant balance leads to oxidative stress. In this article, we discuss the sources of ROS (endogenous and exogenous) and antioxidant mechanisms. We also focus on the pathophysiological significance of oxidative stress in various cell types of the liver. Oxidative stress is implicated in the development and progression of various liver diseases. We narrate the master regulators of ROS-mediated signaling and their contribution to liver diseases. Nonalcoholic fatty liver diseases (NAFLD) are influenced by a "multiple parallel-hit model" in which oxidative stress plays a central role. We highlight the recent findings on the role of oxidative stress in the spectrum of NAFLD, including fibrosis and liver cancer. Finally, we provide a brief overview of oxidative stress biomarkers and their therapeutic applications in various liver-related disorders. Overall, the article sheds light on the significance of oxidative stress in the pathophysiology of the liver. © 2022 American Physiological Society. Compr Physiol 12:3167-3192, 2022.
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Affiliation(s)
- Raja Gopal Reddy Mooli
- Division of Endocrinology and Metabolism, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Dhanunjay Mukhi
- Division of Endocrinology and Metabolism, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Sadeesh K Ramakrishnan
- Division of Endocrinology and Metabolism, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
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47
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Yang X, Ma L, Zhang X, Huang L, Wei J. Targeting PD-1/PD-L1 pathway in myelodysplastic syndromes and acute myeloid leukemia. Exp Hematol Oncol 2022; 11:11. [PMID: 35236415 PMCID: PMC8889667 DOI: 10.1186/s40164-022-00263-4] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Accepted: 02/16/2022] [Indexed: 12/14/2022] Open
Abstract
Myelodysplastic syndromes (MDS) and acute myeloid leukemia (AML) are clonal hematopoietic stem cell diseases arising from the bone marrow (BM), and approximately 30% of MDS eventually progress to AML, associated with increasingly aggressive neoplastic hematopoietic clones and poor survival. Dysregulated immune microenvironment has been recognized as a key pathogenic driver of MDS and AML, causing high rate of intramedullary apoptosis in lower-risk MDS to immunosuppression in higher-risk MDS and AML. Immune checkpoint molecules, including programmed cell death-1 (PD-1) and programmed cell death ligand-1 (PD-L1), play important roles in oncogenesis by maintaining an immunosuppressive tumor microenvironment. Recently, both molecules have been examined in MDS and AML. Abnormal inflammatory signaling, genetic and/or epigenetic alterations, interactions between cells, and treatment of patients all have been involved in dysregulating PD-1/PD-L1 signaling in these two diseases. Furthermore, with the PD-1/PD-L1 pathway activated in immune microenvironment, the milieu of BM shift to immunosuppressive, contributing to a clonal evolution of blasts. Nevertheless, numerous preclinical studies have suggested a potential response of patients to PD-1/PD-L1 blocker. Current clinical trials employing these drugs in MDS and AML have reported mixed clinical responses. In this paper, we focus on the recent preclinical advances of the PD-1/PD-L1 signaling in MDS and AML, and available and ongoing outcomes of PD-1/PD-L1 inhibitor in patients. We also discuss the novel PD-1/PD-L1 blocker-based immunotherapeutic strategies and challenges, including identifying reliable biomarkers, determining settings, and exploring optimal combination therapies.
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Affiliation(s)
- Xingcheng Yang
- Department of Hematology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Avenue, Wuhan, 430030, Hubei, China.,Immunotherapy Research Center for Hematologic Diseases of Hubei Province, Wuhan, 430030, Hubei, China
| | - Ling Ma
- Department of Clinical Laboratory, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Xiaoying Zhang
- Department of Hematology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Avenue, Wuhan, 430030, Hubei, China.,Immunotherapy Research Center for Hematologic Diseases of Hubei Province, Wuhan, 430030, Hubei, China
| | - Liang Huang
- Department of Hematology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Avenue, Wuhan, 430030, Hubei, China. .,Immunotherapy Research Center for Hematologic Diseases of Hubei Province, Wuhan, 430030, Hubei, China.
| | - Jia Wei
- Department of Hematology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Avenue, Wuhan, 430030, Hubei, China. .,Immunotherapy Research Center for Hematologic Diseases of Hubei Province, Wuhan, 430030, Hubei, China.
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48
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Zehnle PMA, Wu Y, Pommerening H, Erlacher M. Stayin‘ alive: BCL-2 proteins in the hematopoietic system. Exp Hematol 2022; 110:1-12. [DOI: 10.1016/j.exphem.2022.03.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 03/09/2022] [Accepted: 03/10/2022] [Indexed: 11/04/2022]
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49
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Liu B, Wang X, Jiang L, Xu J, Zohar Y, Yao G. Extracellular Fluid Flow Induces Shallow Quiescence Through Physical and Biochemical Cues. Front Cell Dev Biol 2022; 10:792719. [PMID: 35281101 PMCID: PMC8912726 DOI: 10.3389/fcell.2022.792719] [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: 10/11/2021] [Accepted: 02/08/2022] [Indexed: 11/13/2022] Open
Abstract
The balance between cell quiescence and proliferation is fundamental to tissue physiology and homeostasis. Recent studies have shown that quiescence is not a passive and homogeneous state but actively maintained and heterogeneous. These cellular characteristics associated with quiescence were observed primarily in cultured cells under a static medium. However, cells in vivo face different microenvironmental conditions, particularly, under interstitial fluid flows distributed through extracellular matrices. Interstitial fluid flow exerts shear stress on cells and matrix strain, and results in continuous replacement of extracellular factors. In this study, we analyzed individual cells under varying fluid flow rates in microfluidic devices. We found quiescence characteristics previously identified under conventional static medium, including serum signal-dependant quiescence entry and exit and time-dependant quiescence deepening, are also present under continuous fluid flow. Furthermore, increasing the flow rate drives cells to shallower quiescence and become more likely to reenter the cell cycle upon growth stimulation. This effect is due to flow-induced physical and biochemical cues. Specifically, increasing shear stress or extracellular factor replacement individually, without altering other parameters, results in shallow quiescence. We show our experimental results can be quantitatively explained by a mathematical model connecting extracellular fluid flow to an Rb-E2f bistable switch that regulates the quiescence-to-proliferation transition. Our findings uncover a previously unappreciated mechanism that likely underlies the heterogeneous responses of quiescent cells for tissue repair and regeneration in different physiological tissue microenvironments.
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Affiliation(s)
- Bi Liu
- School of Pharmacy, Fujian Provincial Key Laboratory of Natural Medicine Pharmacology, Fujian Medical University, Fuzhou, China
- Department of Molecular and Cellular Biology, University of Arizona, Tucson, AZ, United States
| | - Xia Wang
- Department of Molecular and Cellular Biology, University of Arizona, Tucson, AZ, United States
- College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Linan Jiang
- Aerospace and Mechanical Engineering, University of Arizona, Tucson, AZ, United States
- *Correspondence: Linan Jiang, ; Guang Yao,
| | - Jianhua Xu
- School of Pharmacy, Fujian Provincial Key Laboratory of Natural Medicine Pharmacology, Fujian Medical University, Fuzhou, China
| | - Yitshak Zohar
- Aerospace and Mechanical Engineering, University of Arizona, Tucson, AZ, United States
| | - Guang Yao
- Department of Molecular and Cellular Biology, University of Arizona, Tucson, AZ, United States
- *Correspondence: Linan Jiang, ; Guang Yao,
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50
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The MuvB complex safeguards embryonic stem cell identity through regulation of the cell cycle machinery. J Biol Chem 2022; 298:101701. [PMID: 35148988 PMCID: PMC8892154 DOI: 10.1016/j.jbc.2022.101701] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 02/01/2022] [Accepted: 02/02/2022] [Indexed: 11/24/2022] Open
Abstract
Increasing evidences indicate that unlimited capacity for self-renewal and pluripotency, two unique properties of embryonic stem cells (ESCs), are intrinsically linked to cell cycle control. However, the precise mechanisms coordinating cell fate decisions and cell cycle regulation remain to be fully explored. Here, using CRISPR/Cas9-mediated genome editing, we show that in ESCs, deficiency of components of the cell cycle regulatory MuvB complex Lin54 or Lin52, but not Lin9 or Lin37, triggers G2/M arrest, loss of pluripotency, and spontaneous differentiation. Further dissection of these phenotypes demonstrated that this cell cycle arrest is accompanied by the gradual activation of mesoendodermal lineage-specifying genes. Strikingly, the abnormalities observed in Lin54-null ESCs were partially but significantly rescued by ectopic coexpression of genes encoding G2/M proteins Cyclin B1 and Cdk1. Thus, our study provides new insights into the mechanisms by which the MuvB complex determines cell fate through regulation of the cell cycle machinery.
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