1
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Xu A, Sun M, Li Z, Chu Y, Fang K, Zhang Y, Lian J, Zhang L, Chen T, Xu M. ELF4 contributes to esophageal squamous cell carcinoma growth and metastasis by augmenting cancer stemness via FUT9. Acta Biochim Biophys Sin (Shanghai) 2024; 56:129-139. [PMID: 37674363 PMCID: PMC10875363 DOI: 10.3724/abbs.2023225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Accepted: 08/25/2023] [Indexed: 09/08/2023] Open
Abstract
Esophageal squamous cell carcinoma (ESCC) commonly has aggressive properties and a poor prognosis. Investigating the molecular mechanisms underlying the progression of ESCC is crucial for developing effective therapeutic strategies. Here, by performing transcriptome sequencing in ESCC and adjacent normal tissues, we find that E74-like transcription factor 4 (ELF4) is the main upregulated transcription factor in ESCC. The results of the immunohistochemistry show that ELF4 is overexpressed in ESCC tissues and is significantly correlated with cancer staging and prognosis. Furthermore, we demonstrate that ELF4 could promote cancer cell proliferation, migration, invasion, and stemness by in vivo assays. Through RNA-seq and ChIP assays, we find that the stemness-related gene fucosyltransferase 9 ( FUT9) is transcriptionally activated by ELF4. Meanwhile, ELF4 is verified to affect ESCC cancer stemness by regulating FUT9 expression. Overall, we first discover that the transcription factor ELF4 is overexpressed in ESCC and can promote ESCC progression by transcriptionally upregulating the stemness-related gene FUT9.
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Affiliation(s)
- Aiping Xu
- Endoscopy CenterZhongshan HospitalSchool of MedicineFudan UniversityShanghai200032China
- Endoscopy CenterDepartment of GastroenterologyShanghai East HospitalSchool of MedicineTongji UniversityShanghai200120China
- Department of Gastroenterology and HepatologyJing’an District Centre HospitalFudan UniversityShanghai20032China
| | - Mingchuang Sun
- Endoscopy CenterDepartment of GastroenterologyShanghai East HospitalSchool of MedicineTongji UniversityShanghai200120China
| | - Zhaoxing Li
- Endoscopy CenterDepartment of GastroenterologyShanghai East HospitalSchool of MedicineTongji UniversityShanghai200120China
| | - Yuan Chu
- Endoscopy CenterDepartment of GastroenterologyShanghai East HospitalSchool of MedicineTongji UniversityShanghai200120China
| | - Kang Fang
- Endoscopy CenterDepartment of GastroenterologyShanghai East HospitalSchool of MedicineTongji UniversityShanghai200120China
| | - Yunwei Zhang
- Endoscopy CenterDepartment of GastroenterologyShanghai East HospitalSchool of MedicineTongji UniversityShanghai200120China
| | - Jingjing Lian
- Endoscopy CenterDepartment of GastroenterologyShanghai East HospitalSchool of MedicineTongji UniversityShanghai200120China
| | - Li Zhang
- Department of PathologyShanghai East HospitalSchool of MedicineTongji UniversityShanghai200120China
| | - Tao Chen
- Endoscopy CenterDepartment of GastroenterologyShanghai East HospitalSchool of MedicineTongji UniversityShanghai200120China
| | - Meidong Xu
- Endoscopy CenterDepartment of GastroenterologyShanghai East HospitalSchool of MedicineTongji UniversityShanghai200120China
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2
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Olyha SJ, O'Connor SK, Kribis M, Bucklin ML, Uthaya Kumar DB, Tyler PM, Alam F, Jones KM, Sheikha H, Konnikova L, Lakhani SA, Montgomery RR, Catanzaro J, Du H, DiGiacomo DV, Rothermel H, Moran CJ, Fiedler K, Warner N, Hoppenreijs EPAH, van der Made CI, Hoischen A, Olbrich P, Neth O, Rodríguez-Martínez A, Lucena Soto JM, van Rossum AMC, Dalm VASH, Muise AM, Lucas CL. "Deficiency in ELF4, X-Linked": a Monogenic Disease Entity Resembling Behçet's Syndrome and Inflammatory Bowel Disease. J Clin Immunol 2024; 44:44. [PMID: 38231408 PMCID: PMC10929603 DOI: 10.1007/s10875-023-01610-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Accepted: 10/27/2023] [Indexed: 01/18/2024]
Abstract
Defining monogenic drivers of autoinflammatory syndromes elucidates mechanisms of disease in patients with these inborn errors of immunity and can facilitate targeted therapeutic interventions. Here, we describe a cohort of patients with a Behçet's- and inflammatory bowel disease (IBD)-like disorder termed "deficiency in ELF4, X-linked" (DEX) affecting males with loss-of-function variants in the ELF4 transcription factor gene located on the X chromosome. An international cohort of fourteen DEX patients was assessed to identify unifying clinical manifestations and diagnostic criteria as well as collate findings informing therapeutic responses. DEX patients exhibit a heterogeneous clinical phenotype including weight loss, oral and gastrointestinal aphthous ulcers, fevers, skin inflammation, gastrointestinal symptoms, arthritis, arthralgia, and myalgia, with findings of increased inflammatory markers, anemia, neutrophilic leukocytosis, thrombocytosis, intermittently low natural killer and class-switched memory B cells, and increased inflammatory cytokines in the serum. Patients have been predominantly treated with anti-inflammatory agents, with the majority of DEX patients treated with biologics targeting TNFα.
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Affiliation(s)
- Sam J Olyha
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT, USA
| | - Shannon K O'Connor
- Department of Pediatrics, Yale University School of Medicine, New Haven, CT, USA
- Division of Rheumatology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Marat Kribis
- Section of Rheumatology, Department of Internal Medicine, Yale School of Medicine, New Haven, CT, USA
| | - Molly L Bucklin
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT, USA
| | | | - Paul M Tyler
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT, USA
| | - Faiad Alam
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT, USA
| | - Kate M Jones
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT, USA
| | - Hassan Sheikha
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT, USA
- Department of Pediatrics, Yale University School of Medicine, New Haven, CT, USA
| | - Liza Konnikova
- Department of Pediatrics, Yale University School of Medicine, New Haven, CT, USA
- Division of Neonatal and Perinatal Medicine, Yale University School of Medicine, New Haven, CT, USA
- Department of Obstetrics, Gynecology and Reproductive Sciences, Yale Medical School, New Haven, CT, USA
- Program in Human and Translational Immunology, Yale University School of Medicine, New Haven, CT, USA
| | - Saquib A Lakhani
- Department of Pediatrics, Yale University School of Medicine, New Haven, CT, USA
- Pediatric Genomics Discovery Program, Yale University School of Medicine, New Haven, CT, USA
| | - Ruth R Montgomery
- Section of Rheumatology, Department of Internal Medicine, Yale School of Medicine, New Haven, CT, USA
| | - Jason Catanzaro
- Division of Pediatric Allergy and Clinical Immunology, National Jewish Health, Denver, CO, USA
| | - Hongqiang Du
- National Clinical Research Center for Child Health and Disorders, Children's Hospital of Chongqing Medical University, Chongqing, China
- Ministry of Education Key Laboratory of Child Development and Disorders, Children's Hospital of Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Child Infection and Immunity, Children's Hospital of Chongqing Medical University, Chongqing, China
- Department of Rheumatology & Immunology, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Daniel V DiGiacomo
- Division of Rheumatology, Allergy and Immunology, Massachusetts General Hospital, Boston, MA, USA
| | - Holly Rothermel
- Division of Pediatric Rheumatology, MassGeneral for Children, Boston, MA, USA
| | - Christopher J Moran
- Division of Pediatric Gastroenterology, MassGeneral for Children, Boston, MA, USA
| | - Karoline Fiedler
- SickKids Inflammatory Bowel Disease Centre, The Hospital for Sick Children, Toronto, ON, Canada
- Cell Biology Program, Research Institute, The Hospital for Sick Children, Toronto, ON, Canada
| | - Neil Warner
- Cell Biology Program, Research Institute, The Hospital for Sick Children, Toronto, ON, Canada
| | - Esther P A H Hoppenreijs
- Department of Pediatric Rheumatology, Amalia Children's Hospital, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Caspar I van der Made
- Department of Internal Medicine and Radboud Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Alexander Hoischen
- Department of Internal Medicine and Radboud Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Peter Olbrich
- Inborn Errors of Immunity Group, Biomedicine Institute of Sevilla (IBiS), CSIC, Seville, Spain
- Pediatric Infectious Diseases, Rheumatology and Immunology Unit, Hospital Universitario Virgen del Rocío, Seville, Spain
- Departamento de Farmacología, Pediatría y Radiología, Universidad de Sevilla, Seville, Spain
| | - Olaf Neth
- Inborn Errors of Immunity Group, Biomedicine Institute of Sevilla (IBiS), CSIC, Seville, Spain
- Pediatric Infectious Diseases, Rheumatology and Immunology Unit, Hospital Universitario Virgen del Rocío, Seville, Spain
| | - Alejandro Rodríguez-Martínez
- Pediatric Gastroenterology, Hepatology and Nutrition Unit, Hospital Universitario Virgen del Rocío, Seville, Spain
| | | | - Annemarie M C van Rossum
- Erasmus MC University Medical Center-Sophia Children's Hospital, Department of Pediatrics, Division of Infectious Diseases and Immunology, Rotterdam, The Netherlands
- Department of Medical Microbiology and Infectious Diseases, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Virgil A S H Dalm
- Department of Immunology, Laboratory of Medical Immunology, Erasmus University Medical Centre, Rotterdam, The Netherlands
- Department of Internal Medicine, Division of Allergy & Clinical Immunology, Erasmus University Medical Center, Rotterdam, The Netherlands
- Academic Center for Rare Immunological Diseases (RIDC), Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Aleixo M Muise
- SickKids Inflammatory Bowel Disease Centre, The Hospital for Sick Children, Toronto, ON, Canada
- Cell Biology Program, Research Institute, The Hospital for Sick Children, Toronto, ON, Canada
- Department of Pediatrics, Institute of Medical Science and Biochemistry, University of Toronto, The Hospital for Sick Children, Toronto, ON, Canada
| | - Carrie L Lucas
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT, USA.
- Program in Human and Translational Immunology, Yale University School of Medicine, New Haven, CT, USA.
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3
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McClatchy J, Strogantsev R, Wolfe E, Lin HY, Mohammadhosseini M, Davis BA, Eden C, Goldman D, Fleming WH, Conley P, Wu G, Cimmino L, Mohammed H, Agarwal A. Clonal hematopoiesis related TET2 loss-of-function impedes IL1β-mediated epigenetic reprogramming in hematopoietic stem and progenitor cells. Nat Commun 2023; 14:8102. [PMID: 38062031 PMCID: PMC10703894 DOI: 10.1038/s41467-023-43697-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Accepted: 11/16/2023] [Indexed: 12/18/2023] Open
Abstract
Clonal hematopoiesis (CH) is defined as a single hematopoietic stem/progenitor cell (HSPC) gaining selective advantage over a broader range of HSPCs. When linked to somatic mutations in myeloid malignancy-associated genes, such as TET2-mediated clonal hematopoiesis of indeterminate potential or CHIP, it represents increased risk for hematological malignancies and cardiovascular disease. IL1β is elevated in patients with CHIP, however, its effect is not well understood. Here we show that IL1β promotes expansion of pro-inflammatory monocytes/macrophages, coinciding with a failure in the demethylation of lymphoid and erythroid lineage associated enhancers and transcription factor binding sites, in a mouse model of CHIP with hematopoietic-cell-specific deletion of Tet2. DNA-methylation is significantly lost in wild type HSPCs upon IL1β administration, which is resisted by Tet2-deficient HSPCs, and thus IL1β enhances the self-renewing ability of Tet2-deficient HSPCs by upregulating genes associated with self-renewal and by resisting demethylation of transcription factor binding sites related to terminal differentiation. Using aged mouse models and human progenitors, we demonstrate that targeting IL1 signaling could represent an early intervention strategy in preleukemic disorders. In summary, our results show that Tet2 is an important mediator of an IL1β-promoted epigenetic program to maintain the fine balance between self-renewal and lineage differentiation during hematopoiesis.
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Affiliation(s)
- J McClatchy
- Division of Oncological Sciences, Oregon Health & Science University, Portland, OR, USA
- Department of Cell, Developmental, and Cancer Biology, Oregon Health & Science University, Portland, OR, USA
| | - R Strogantsev
- Cancer Early Detection Advanced Research Center, Knight Cancer Institute, Oregon Health & Science University, Portland, OR, USA
| | - E Wolfe
- Division of Oncological Sciences, Oregon Health & Science University, Portland, OR, USA
- Department of Cell, Developmental, and Cancer Biology, Oregon Health & Science University, Portland, OR, USA
| | - H Y Lin
- Division of Oncological Sciences, Oregon Health & Science University, Portland, OR, USA
- Department of Cell, Developmental, and Cancer Biology, Oregon Health & Science University, Portland, OR, USA
| | - M Mohammadhosseini
- Division of Oncological Sciences, Oregon Health & Science University, Portland, OR, USA
- Department of Cell, Developmental, and Cancer Biology, Oregon Health & Science University, Portland, OR, USA
| | - B A Davis
- Division of Oncological Sciences, Oregon Health & Science University, Portland, OR, USA
- Department of Cell, Developmental, and Cancer Biology, Oregon Health & Science University, Portland, OR, USA
| | - C Eden
- Division of Oncological Sciences, Oregon Health & Science University, Portland, OR, USA
- Department of Cell, Developmental, and Cancer Biology, Oregon Health & Science University, Portland, OR, USA
| | - D Goldman
- Division of Hematology & Medical Oncology, Oregon Health & Science University, Portland, OR, USA
- Division of Pediatric Hematology and Oncology, Oregon Health & Science University, Portland, OR, USA
| | - W H Fleming
- Division of Hematology & Medical Oncology, Oregon Health & Science University, Portland, OR, USA
- Division of Pediatric Hematology and Oncology, Oregon Health & Science University, Portland, OR, USA
| | - P Conley
- Department of Medical Informatics and Clinical Epidemiology, Oregon Health & Science University, Portland, OR, USA
| | - G Wu
- Department of Medical Informatics and Clinical Epidemiology, Oregon Health & Science University, Portland, OR, USA
| | - L Cimmino
- University of Miami, Department of Biochemistry and Molecular Biology, Sylvester Comprehensive Cancer Center, Miami, USA
| | - H Mohammed
- Cancer Early Detection Advanced Research Center, Knight Cancer Institute, Oregon Health & Science University, Portland, OR, USA
| | - A Agarwal
- Division of Oncological Sciences, Oregon Health & Science University, Portland, OR, USA.
- Department of Cell, Developmental, and Cancer Biology, Oregon Health & Science University, Portland, OR, USA.
- Cancer Early Detection Advanced Research Center, Knight Cancer Institute, Oregon Health & Science University, Portland, OR, USA.
- Division of Hematology & Medical Oncology, Oregon Health & Science University, Portland, OR, USA.
- Department of Molecular and Medical Genetics, Oregon Health & Science University, Portland, OR, USA.
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4
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Li L, Wang S, Wang W. Knockdown of ELF4 aggravates renal injury in ischemia/reperfusion mice through promotion of pyroptosis, inflammation, oxidative stress, and endoplasmic reticulum stress. BMC Mol Cell Biol 2023; 24:22. [PMID: 37474923 PMCID: PMC10360327 DOI: 10.1186/s12860-023-00485-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Accepted: 07/13/2023] [Indexed: 07/22/2023] Open
Abstract
BACKGROUND Renal ischemia/reperfusion (I/R) injury is a major cause of acute kidney injury (AKI). Dysfunction of E74-like ETS transcription factor 4 (ELF4) leads to inflammation. This research intended to look into the function and mechanisms of ELF4 in I/R and oxygen-glucose deprivation/reperfusion (OGD/R) model. RESULTS In I/R and OGD/R model, ELF4 expression was downregulated. ELF4 knockout aggravated I/R-induced kidney injury, oxidative stress (OS), endoplasmic reticulum stress (ERS), apoptosis, inflammation, and pyroptosis in mice. In HK-2 cells treated with OGD/R, suppression of ELF4 expression inhibited cell proliferation and promoted cell apoptosis, OS, ERS, inflammation, and pyroptosis. Moreover, ELF4 overexpression led to the opposite results. CONCLUSION ELF4 deficiency aggravated I/R induced AKI, which was involved in apoptosis, OS, ERS, inflammation, and pyroptosis. Targeting ELF4 may be a promising new therapeutic strategy for preventing inflammation after IR-AKI.
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Affiliation(s)
- Li Li
- Department of Nephrology, Jinan City People's Hospital, No. 001, Changshao North Road, Laiwu District, Jinan, Shandong, 271199, People's Republic of China.
| | - Shunying Wang
- Department of Cadre Health Section, Jinan City People's Hospital, Jinan, Shandong, 271199, People's Republic of China
| | - Wenming Wang
- Department of Cadre Health Section, Jinan City People's Hospital, Jinan, Shandong, 271199, People's Republic of China
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5
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Tang X, Wang Z, Wang J, Cui S, Xu R, Wang Y. Functions and regulatory mechanisms of resting hematopoietic stem cells: a promising targeted therapeutic strategy. Stem Cell Res Ther 2023; 14:73. [PMID: 37038215 PMCID: PMC10088186 DOI: 10.1186/s13287-023-03316-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Accepted: 03/29/2023] [Indexed: 04/12/2023] Open
Abstract
Hematopoietic stem cells (HSCs) are the common and essential precursors of all blood cells, including immune cells, and they are responsible for the lifelong maintenance and damage repair of blood tissue homeostasis. The vast majority (> 95%) of HSCs are in a resting state under physiological conditions and are only activated to play a functional role under stress conditions. This resting state affects their long-term survival and is also closely related to the lifelong maintenance of hematopoietic function; however, abnormal changes may also be an important factor leading to the decline of immune function in the body and the occurrence of diseases in various systems. While the importance of resting HSCs has attracted increasing research attention, our current understanding of this topic remains insufficient, and the direction of clinical targeted treatments is unclear. Here, we describe the functions of HSCs, analyze the regulatory mechanisms that affect their resting state, and discuss the relationship between resting HSCs and different diseases, with a view to providing guidance for the future clinical implementation of related targeted treatments.
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Affiliation(s)
- Xinyu Tang
- Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Zhenzhen Wang
- Department of Hematology, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, No. 16369 Jingshi Road, Lixia District, Jinan, 250014, China
- Institute of Hematology, Shandong University of Traditional Chinese Medicine, Jinan, China
- Shandong Provincial Health Commission Key Laboratory of Hematology of Integrated Traditional Chinese and Western Medicine, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Jingyi Wang
- Department of Hematology, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, No. 16369 Jingshi Road, Lixia District, Jinan, 250014, China
- Institute of Hematology, Shandong University of Traditional Chinese Medicine, Jinan, China
- Shandong Provincial Health Commission Key Laboratory of Hematology of Integrated Traditional Chinese and Western Medicine, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Siyuan Cui
- Department of Hematology, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, No. 16369 Jingshi Road, Lixia District, Jinan, 250014, China
- Institute of Hematology, Shandong University of Traditional Chinese Medicine, Jinan, China
- Shandong Provincial Health Commission Key Laboratory of Hematology of Integrated Traditional Chinese and Western Medicine, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Ruirong Xu
- Department of Hematology, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, No. 16369 Jingshi Road, Lixia District, Jinan, 250014, China.
- Institute of Hematology, Shandong University of Traditional Chinese Medicine, Jinan, China.
- Shandong Provincial Health Commission Key Laboratory of Hematology of Integrated Traditional Chinese and Western Medicine, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China.
| | - Yan Wang
- Department of Hematology, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, No. 16369 Jingshi Road, Lixia District, Jinan, 250014, China.
- Institute of Hematology, Shandong University of Traditional Chinese Medicine, Jinan, China.
- Shandong Provincial Health Commission Key Laboratory of Hematology of Integrated Traditional Chinese and Western Medicine, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China.
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6
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Kosti A, Chiou J, Guardia GDA, Lei X, Balinda H, Landry T, Lu X, Qiao M, Gilbert A, Brenner A, Galante PAF, Tiziani S, Penalva LOF. ELF4 is a critical component of a miRNA-transcription factor network and is a bridge regulator of glioblastoma receptor signaling and lipid dynamics. Neuro Oncol 2023; 25:459-470. [PMID: 35862252 PMCID: PMC10013642 DOI: 10.1093/neuonc/noac179] [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: 05/28/2021] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND The loss of neurogenic tumor suppressor microRNAs miR-124, miR-128, and miR-137 is associated with glioblastoma's undifferentiated state. Most of their impact comes via the repression of a network of oncogenic transcription factors. We conducted a high-throughput functional siRNA screen in glioblastoma cells and identify E74 like ETS transcription factor 4 (ELF4) as the leading contributor to oncogenic phenotypes. METHODS In vitro and in vivo assays were used to assess ELF4 impact on cancer phenotypes. We characterized ELF4's mechanism of action via genomic and lipidomic analyses. A MAPK reporter assay verified ELF4's impact on MAPK signaling, and qRT-PCR and western blotting were used to corroborate ELF4 regulatory role on most relevant target genes. RESULTS ELF4 knockdown resulted in significant proliferation delay and apoptosis in GBM cells and long-term growth delay and morphological changes in glioma stem cells (GSCs). Transcriptomic analyses revealed that ELF4 controls two interlinked pathways: 1) Receptor tyrosine kinase signaling and 2) Lipid dynamics. ELF4 modulation directly affected receptor tyrosine kinase (RTK) signaling, as mitogen-activated protein kinase (MAPK) activity was dependent upon ELF4 levels. Furthermore, shotgun lipidomics revealed that ELF4 depletion disrupted several phospholipid classes, highlighting ELF4's importance in lipid homeostasis. CONCLUSIONS We found that ELF4 is critical for the GBM cell identity by controlling genes of two dependent pathways: RTK signaling (SRC, PTK2B, and TNK2) and lipid dynamics (LRP1, APOE, ABCA7, PLA2G6, and PITPNM2). Our data suggest that targeting these two pathways simultaneously may be therapeutically beneficial to GBM patients.
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Affiliation(s)
- Adam Kosti
- Greehey Children's Cancer Research Institute, University of Texas Health Science Center at San Antonio, San Antonio, Texas,USA.,Department of Cell Systems and Anatomy, University of Texas Health Science Center at San Antonio, San Antonio, Texas, USA
| | - Jennifer Chiou
- Department of Nutritional Sciences, Dell Pediatric Research Institute, Dell Medical School, The University of Texas at Austin, Austin, Texas, USA
| | | | - Xiufen Lei
- Greehey Children's Cancer Research Institute, University of Texas Health Science Center at San Antonio, San Antonio, Texas,USA.,Department of Nutritional Sciences, Dell Pediatric Research Institute, Dell Medical School, The University of Texas at Austin, Austin, Texas, USA
| | - Henriette Balinda
- Department of Medicine, University of Texas Health Science Center at San Antonio, San Antonio, Texas,USA
| | - Tesha Landry
- Greehey Children's Cancer Research Institute, University of Texas Health Science Center at San Antonio, San Antonio, Texas,USA
| | - Xiyuan Lu
- Greehey Children's Cancer Research Institute, University of Texas Health Science Center at San Antonio, San Antonio, Texas,USA.,Department of Nutritional Sciences, Dell Pediatric Research Institute, Dell Medical School, The University of Texas at Austin, Austin, Texas, USA
| | - Mei Qiao
- Greehey Children's Cancer Research Institute, University of Texas Health Science Center at San Antonio, San Antonio, Texas,USA
| | - Andrea Gilbert
- Department of Pathology, University of Texas Health Science Center at San Antonio, San Antonio, Texas, USA
| | - Andrew Brenner
- Department of Medicine, University of Texas Health Science Center at San Antonio, San Antonio, Texas,USA
| | - Pedro A F Galante
- Centro de Oncologia Molecular, Hospital Sirio-Libanes, São Paulo, Brazil.,Departamento de Bioquimica, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
| | - Stefano Tiziani
- Department of Nutritional Sciences, Dell Pediatric Research Institute, Dell Medical School, The University of Texas at Austin, Austin, Texas, USA
| | - Luiz O F Penalva
- Greehey Children's Cancer Research Institute, University of Texas Health Science Center at San Antonio, San Antonio, Texas,USA.,Department of Cell Systems and Anatomy, University of Texas Health Science Center at San Antonio, San Antonio, Texas, USA
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7
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Salinas SA, Mace EM, Conte MI, Park CS, Li Y, Rosario-Sepulveda JI, Mahapatra S, Moore EK, Hernandez ER, Chinn IK, Reed AE, Lee BJ, Frumovitz A, Gibbs RA, Posey JE, Forbes Satter LR, Thatayatikom A, Allenspach EJ, Wensel TG, Lupski JR, Lacorazza HD, Orange JS. An ELF4 hypomorphic variant results in NK cell deficiency. JCI Insight 2022; 7:e155481. [PMID: 36477361 PMCID: PMC9746917 DOI: 10.1172/jci.insight.155481] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 10/13/2022] [Indexed: 12/12/2022] Open
Abstract
NK cell deficiencies (NKD) are a type of primary immune deficiency in which the major immunologic abnormality affects NK cell number, maturity, or function. Since NK cells contribute to immune defense against virally infected cells, patients with NKD experience higher susceptibility to chronic, recurrent, and fatal viral infections. An individual with recurrent viral infections and mild hypogammaglobulinemia was identified to have an X-linked damaging variant in the transcription factor gene ELF4. The variant does not decrease expression but disrupts ELF4 protein interactions and DNA binding, reducing transcriptional activation of target genes and selectively impairing ELF4 function. Corroborating previous murine models of ELF4 deficiency (Elf4-/-) and using a knockdown human NK cell line, we determined that ELF4 is necessary for normal NK cell development, terminal maturation, and function. Through characterization of the NK cells of the proband, expression of the proband's variant in Elf4-/- mouse hematopoietic precursor cells, and a human in vitro NK cell maturation model, we established this ELF4 variant as a potentially novel cause of NKD.
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Affiliation(s)
- Sandra Andrea Salinas
- Department of Pediatrics, Baylor College of Medicine, Texas Children’s Hospital, Houston, Texas, USA
- Department of Pediatrics, Columbia University Irving Medical Center, New York, New York, USA
| | - Emily M. Mace
- Department of Pediatrics, Columbia University Irving Medical Center, New York, New York, USA
| | - Matilde I. Conte
- Department of Pediatrics, Columbia University Irving Medical Center, New York, New York, USA
| | | | - Yu Li
- Department of Pediatrics, Baylor College of Medicine, Texas Children’s Hospital, Houston, Texas, USA
- Department of Pediatrics, Columbia University Irving Medical Center, New York, New York, USA
| | | | - Sanjana Mahapatra
- Department of Pediatrics, Baylor College of Medicine, Texas Children’s Hospital, Houston, Texas, USA
| | - Emily K. Moore
- Department of Pediatrics, Columbia University Irving Medical Center, New York, New York, USA
| | - Evelyn R. Hernandez
- Department of Pediatrics, Columbia University Irving Medical Center, New York, New York, USA
| | - Ivan K. Chinn
- Department of Pediatrics, Baylor College of Medicine, Texas Children’s Hospital, Houston, Texas, USA
| | - Abigail E. Reed
- Department of Pediatrics, Columbia University Irving Medical Center, New York, New York, USA
| | - Barclay J. Lee
- Department of Pediatrics, Columbia University Irving Medical Center, New York, New York, USA
| | - Alexander Frumovitz
- Department of Pediatrics, Baylor College of Medicine, Texas Children’s Hospital, Houston, Texas, USA
- Department of Pediatrics, Columbia University Irving Medical Center, New York, New York, USA
| | - Richard A. Gibbs
- Department of Molecular and Human Genetics, and
- Human Genome Sequencing Center, Baylor College of Medicine, Houston, Texas, USA
| | | | - Lisa R. Forbes Satter
- Department of Pediatrics, Baylor College of Medicine, Texas Children’s Hospital, Houston, Texas, USA
| | - Akaluck Thatayatikom
- Division of Pediatric Allergy, Immunology, and Rheumatology, Department of Pediatrics, University of Florida, Shands Children’s Hospital, Gainesville, Florida, USA
| | - Eric J. Allenspach
- Division of Immunology, Seattle Children’s Hospital, Seattle, Washington, USA
- Department of Pediatrics, University of Washington, Seattle, Washington, USA
| | | | - James R. Lupski
- Department of Pediatrics, Baylor College of Medicine, Texas Children’s Hospital, Houston, Texas, USA
- Department of Molecular and Human Genetics, and
- Human Genome Sequencing Center, Baylor College of Medicine, Houston, Texas, USA
| | | | - Jordan S. Orange
- Department of Pediatrics, Columbia University Irving Medical Center, New York, New York, USA
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Wang X, Lv JL, Cheng S, Su ZH, Qin S, Sun X, Tang XD, Liu QN, Li MW, Wang XY. Bombyx mori transcription factor, E74A, beneficially affects BmNPV infection through direct interaction. PEST MANAGEMENT SCIENCE 2022; 78:5302-5312. [PMID: 36054174 DOI: 10.1002/ps.7152] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2022] [Revised: 08/21/2022] [Accepted: 08/27/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Nucleopolyhedrovirus (NPV), one of the baculoviruses, is a promising biopesticide for pest control. Lepidopteran account for 70% of pests, therefore investigation on highly conserved genes associated with viral infections in the lepidopteran model, the silkworm, will serve as a valuable reference for improving the effectiveness of pest management. BmE74A is a member of the erythroblast transformation-specific (ETS) family of transcription factors in Bombyx mori, which we previously found to be highly conserved and closely associated with BmNPV. This study aimed to elucidate the role of BmE74A in viral infection. RESULTS A significantly high expression of BmE74A in eggs indicated its important role in embryonic development, as did relatively high expressions in the hemolymph and midgut. Significant differences in BmE74A expression in different resistant strains after BmNPV infection suggested its involvement as a response to viral infection. Moreover, RNA interference (RNAi) and overexpression experiments confirmed the important role of BmE74A in promoting viral infection. BmNPV infection was significantly suppressed and enhanced by BmE74A knockdown and overexpression, respectively. Besides, BmE74A was found to regulate the expression of BmMdm2 and Bmp53. Furthermore, the binding of ETS, the functional domain of BmE74A, to occlusion-derived virus proteins was confirmed by far-western blotting, and four viral proteins that may interact with ETS proteins were identified by mass spectrometry. Similarly, a homolog of BmE74A in Spodoptera litura was also found to be involved in larval susceptibility to BmNPV. CONCLUSION BmE74A promotes BmNPV proliferation by directly interacting with the virus, which may be related to the suppression of the p53 pathway. © 2022 Society of Chemical Industry.
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Affiliation(s)
- Xin Wang
- Jiangsu Key Laboratory of Sericultural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, China
| | - Jun-Li Lv
- Jiangsu Key Laboratory of Sericultural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, China
| | - Shuang Cheng
- Jiangsu Key Laboratory of Sericultural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, China
| | - Zhi-Hao Su
- Jiangsu Key Laboratory of Sericultural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, China
| | - Sheng Qin
- Jiangsu Key Laboratory of Sericultural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, China
- Key Laboratory of Silkworm and Mulberry Genetic Improvement, Ministry of Agriculture and Rural Affairs, Sericultural Research Institute, Chinese Academy of Agricultural Science, Zhenjiang, China
| | - Xia Sun
- Jiangsu Key Laboratory of Sericultural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, China
- Key Laboratory of Silkworm and Mulberry Genetic Improvement, Ministry of Agriculture and Rural Affairs, Sericultural Research Institute, Chinese Academy of Agricultural Science, Zhenjiang, China
| | - Xu-Dong Tang
- Jiangsu Key Laboratory of Sericultural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, China
- Key Laboratory of Silkworm and Mulberry Genetic Improvement, Ministry of Agriculture and Rural Affairs, Sericultural Research Institute, Chinese Academy of Agricultural Science, Zhenjiang, China
| | - Qiu-Ning Liu
- Jiangsu Key Laboratory for Bioresources of Saline Soils, Jiangsu Synthetic Innovation Center for Coastal Bio-agriculture, Jiangsu Provincial Key Laboratory of Coastal Wetland Bioresources and Environmental Protection, School of Wetland, Yancheng Teachers University, Yancheng, China
| | - Mu-Wang Li
- Jiangsu Key Laboratory of Sericultural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, China
- Key Laboratory of Silkworm and Mulberry Genetic Improvement, Ministry of Agriculture and Rural Affairs, Sericultural Research Institute, Chinese Academy of Agricultural Science, Zhenjiang, China
| | - Xue-Yang Wang
- Jiangsu Key Laboratory of Sericultural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, China
- Key Laboratory of Silkworm and Mulberry Genetic Improvement, Ministry of Agriculture and Rural Affairs, Sericultural Research Institute, Chinese Academy of Agricultural Science, Zhenjiang, China
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9
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Cell-intrinsic factors governing quiescence vis-à-vis activation of adult hematopoietic stem cells. Mol Cell Biochem 2022; 478:1361-1382. [PMID: 36309884 DOI: 10.1007/s11010-022-04594-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Accepted: 10/13/2022] [Indexed: 10/31/2022]
Abstract
Hematopoiesis is a highly complex process, regulated by both intrinsic and extrinsic factors. Often, these two regulatory arms work in tandem to maintain the steady-state condition of hematopoiesis. However, at times, certain intrinsic attributes of hematopoietic stem cells (HSCs) override the external stimuli and dominate the outcome. These could be genetic events like mutations or environmentally induced epigenetic or transcriptomic changes. Since leukemic stem cells (LSCs) share molecular pathways that also regulate normal HSCs, identifying specific, dominantly acting intrinsic factors could help in the development of novel therapeutic approaches. Here we have reviewed such dominantly acting intrinsic factors governing quiescence vis-à-vis activation of the HSCs in the face of external forces acting on them. For brevity, we have restricted our review to the articles dealing with adult HSCs of human and mouse origin that have been published in the last 10 years. Hematopoietic stem cells (HSCs) are closely associated with various stromal cells in their microenvironment and, thus, constantly receive signaling cues from them. The illustration depicts some dominantly acting intrinsic or cell-autonomous factors operative in the HSCs. These fall into various categories, such as epigenetic regulators, transcription factors, cell cycle regulators, tumor suppressor genes, signaling pathways, and metabolic regulators, which counteract the outcome of extrinsic signaling exerted by the HSC niche.
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10
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Abstract
Hematopoietic stem cell (HSC) regeneration is the remarkable process by which extremely rare, normally inactive cells of the bone marrow can replace an entire organ if called to do so by injury or harnessed by transplantation. HSC research is arguably the first quantitative single-cell science and the foundation of adult stem cell biology. Bone marrow transplant is the oldest and most refined technique of regenerative medicine. Here we review the intertwined history of the discovery of HSCs and bone marrow transplant, the molecular and cellular mechanisms of HSC self-renewal, and the use of HSCs and their derivatives for cell therapy.
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Affiliation(s)
- Mitch Biermann
- Department of Medicine, University of California San Diego, La Jolla, California 92093
| | - Tannishtha Reya
- Department of Medicine, University of California San Diego, La Jolla, California 92093
- Department of Pharmacology, University of California San Diego, La Jolla, California 92093
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11
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Shi L, Zhai Y, Zhao Y, Kong X, Zhang D, Yu H, Li Z. ELF4 is critical to zygotic gene activation and epigenetic reprogramming during early embryonic development in pigs. Front Vet Sci 2022; 9:954601. [PMID: 35928113 PMCID: PMC9343831 DOI: 10.3389/fvets.2022.954601] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Accepted: 06/27/2022] [Indexed: 11/28/2022] Open
Abstract
Zygotic gene activation (ZGA) and epigenetic reprogramming are critical in early embryonic development in mammals, and transcription factors are involved in regulating these events. However, the effects of ELF4 on porcine embryonic development remain unclear. In this study, the expression of ELF4 was detected in early porcine embryos and different tissues. By knocking down ELF4, the changes of H3K9me3 modification, DNA methylation and ZGA-related genes were analyzed. Our results showed that ELF4 was expressed at all stages of early porcine embryos fertilized in vitro (IVF), with the highest expression level at the 8-cell stage. The embryonic developmental competency and blastocyst quality decreased after ELF4 knockdown (20.70% control vs. 17.49% si-scramble vs. 2.40% si-ELF4; p < 0.001). Knockdown of ELF4 induced DNA damage at the 4-cell stage. Interfering with ELF4 resulted in abnormal increases in H3K9me3 and DNA methylation levels at the 4-cell stage and inhibited the expression of genes related to ZGA. These results suggest that ELF4 affects ZGA and embryonic development competency in porcine embryos by maintaining genome integrity and regulating dynamic changes of H3K9me3 and DNA methylation, and correctly activating ZGA-related genes to promote epigenetic reprogramming. These results provide a theoretical basis for further studies on the regulatory mechanisms of ELF4 in porcine embryos.
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Affiliation(s)
- Lijing Shi
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, First Hospital, Jilin University, Changchun, China
- College of Animal Science, Jilin University, Changchun, China
| | - Yanhui Zhai
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, First Hospital, Jilin University, Changchun, China
| | - Yuanshen Zhao
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, First Hospital, Jilin University, Changchun, China
| | - Xiangjie Kong
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, First Hospital, Jilin University, Changchun, China
| | - Daoyu Zhang
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, First Hospital, Jilin University, Changchun, China
| | - Hao Yu
- College of Animal Science, Jilin University, Changchun, China
- Hao Yu
| | - Ziyi Li
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, First Hospital, Jilin University, Changchun, China
- *Correspondence: Ziyi Li
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12
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Benjamin DI, Both P, Benjamin JS, Nutter CW, Tan JH, Kang J, Machado LA, Klein JDD, de Morree A, Kim S, Liu L, Dulay H, Feraboli L, Louie SM, Nomura DK, Rando TA. Fasting induces a highly resilient deep quiescent state in muscle stem cells via ketone body signaling. Cell Metab 2022; 34:902-918.e6. [PMID: 35584694 PMCID: PMC9177797 DOI: 10.1016/j.cmet.2022.04.012] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 12/15/2021] [Accepted: 04/25/2022] [Indexed: 01/11/2023]
Abstract
Short-term fasting is beneficial for the regeneration of multiple tissue types. However, the effects of fasting on muscle regeneration are largely unknown. Here, we report that fasting slows muscle repair both immediately after the conclusion of fasting as well as after multiple days of refeeding. We show that ketosis, either endogenously produced during fasting or a ketogenic diet or exogenously administered, promotes a deep quiescent state in muscle stem cells (MuSCs). Although deep quiescent MuSCs are less poised to activate, slowing muscle regeneration, they have markedly improved survival when facing sources of cellular stress. Furthermore, we show that ketone bodies, specifically β-hydroxybutyrate, directly promote MuSC deep quiescence via a nonmetabolic mechanism. We show that β-hydroxybutyrate functions as an HDAC inhibitor within MuSCs, leading to acetylation and activation of an HDAC1 target protein p53. Finally, we demonstrate that p53 activation contributes to the deep quiescence and enhanced resilience observed during fasting.
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Affiliation(s)
- Daniel I Benjamin
- Department of Neurology and Neurological Sciences, Stanford University School of Medicine, Stanford, CA 94305, USA; Paul F. Glenn Laboratories for the Biology of Aging, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Pieter Both
- Department of Neurology and Neurological Sciences, Stanford University School of Medicine, Stanford, CA 94305, USA; Paul F. Glenn Laboratories for the Biology of Aging, Stanford University School of Medicine, Stanford, CA 94305, USA; Stem Cell Biology and Regenerative Medicine Graduate Program, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Joel S Benjamin
- Department of Neurology and Neurological Sciences, Stanford University School of Medicine, Stanford, CA 94305, USA; Paul F. Glenn Laboratories for the Biology of Aging, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Christopher W Nutter
- Paul F. Glenn Laboratories for the Biology of Aging, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Jenna H Tan
- Paul F. Glenn Laboratories for the Biology of Aging, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Jengmin Kang
- Department of Neurology and Neurological Sciences, Stanford University School of Medicine, Stanford, CA 94305, USA; Paul F. Glenn Laboratories for the Biology of Aging, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Leo A Machado
- Biology of the Neuromuscular System, INSERM IMRB U955-E10, UPEC, ENVA, EFS, Creteil 94000, France
| | - Julian D D Klein
- Paul F. Glenn Laboratories for the Biology of Aging, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Antoine de Morree
- Department of Neurology and Neurological Sciences, Stanford University School of Medicine, Stanford, CA 94305, USA; Paul F. Glenn Laboratories for the Biology of Aging, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Soochi Kim
- Department of Neurology and Neurological Sciences, Stanford University School of Medicine, Stanford, CA 94305, USA; Paul F. Glenn Laboratories for the Biology of Aging, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Ling Liu
- Department of Neurology and Neurological Sciences, Stanford University School of Medicine, Stanford, CA 94305, USA; Paul F. Glenn Laboratories for the Biology of Aging, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Hunter Dulay
- Paul F. Glenn Laboratories for the Biology of Aging, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Ludovica Feraboli
- Paul F. Glenn Laboratories for the Biology of Aging, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Sharon M Louie
- Department of Nutritional Sciences and Toxicology, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Daniel K Nomura
- Department of Nutritional Sciences and Toxicology, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Thomas A Rando
- Department of Neurology and Neurological Sciences, Stanford University School of Medicine, Stanford, CA 94305, USA; Paul F. Glenn Laboratories for the Biology of Aging, Stanford University School of Medicine, Stanford, CA 94305, USA; Center for Tissue Regeneration, Repair, and Restoration, Veterans Affairs Palo Alto Healthcare System, Palo Alto, CA 94304, USA; Neurology Service, Veterans Affairs Palo Alto Health Care System, Palo Alto, CA 94304, USA.
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13
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Gudmundsson KO, Du Y. Quiescence regulation by normal haematopoietic stem cells and leukaemia stem cells. FEBS J 2022. [PMID: 35514133 DOI: 10.1111/febs.16472] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 03/21/2022] [Accepted: 05/03/2022] [Indexed: 11/30/2022]
Abstract
The haematopoietic system is maintained by rare haematopoietic stem cells (HSCs), which are quiescent most of the time and only divide occasionally to self-renew and/or to undergo commitment to clonal expansion via the generation of highly proliferative progenitor cells. The latter is responsible for the generation of all mature cells of the system through subsequent lineage commitment and terminal differentiation. Cells with similar properties also exist in leukaemias and are known as leukaemia stem cells (LSCs). Quiescence provides essential protection for both HSC and LSC from cytotoxic stress and DNA damage and, in the case of LSCs, likely causes therapy resistance and disease relapse in leukaemia patients. Specific inhibition of LSC quiescence has been considered a promising strategy for eliminating LSCs and curing leukaemias. Although the understanding of mechanisms responsible for quiescence maintenance in these cells remains limited, particularly for LSCs, recent studies have suggested potential differences in their dependency on certain pathways and their levels of stress and DNA damage caused by increased cycling. Such differences likely stem from oncogenic mutations in LSCs and could be specifically exploited for the elimination of LSCs while sparing normal HSCs in the future.
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Affiliation(s)
- Kristbjorn Orri Gudmundsson
- Basic Science Program Leidos Biomedical Research Inc. Frederick National Laboratory for Cancer Research in the Mouse Cancer Genetics Program Center for Cancer Research NCI Frederick MD USA
| | - Yang Du
- Department of Pediatrics Uniformed Services University of the Health Sciences Bethesda MD USA
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14
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Lee JW, Kim HS, Yon SJ, Matsumoto T, Lee SK, Lee KY. In vitro culture of hematopoietic stem cell niche using angiopoietin-1-coupled alginate hydrogel. Int J Biol Macromol 2022; 209:1893-1899. [PMID: 35489624 DOI: 10.1016/j.ijbiomac.2022.04.163] [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: 08/09/2021] [Revised: 04/13/2022] [Accepted: 04/21/2022] [Indexed: 11/05/2022]
Abstract
Stem cells exist and maintain their quiescence and pluripotency in stem cell niche. Here, we hypothesized that regulation of cell-cell interactions using a polymeric scaffold as synthetic extracellular matrix (ECM) could be critical in creating a hematopoietic stem cell (HSC) niche in vitro. Angiopoietin-1 (Ang1) binds to the tyrosine kinase receptor (Tie2), and regulation of the Tie2/Ang1 interaction is important in maintaining the quiescence of HSCs in vivo. Alginate hydrogel was thus modified with Ang1 as a synthetic ECM to mimic the HSC niche. Long-term HSCs (CD34-, CD135-, and CD150+) were isolated from mouse femurs and cultured on Ang1-modified alginate hydrogel. The percentage of LT-HSCs in G0 phase was 46.8 ± 1.8%, which was comparable to that of LT-HSCs co-cultured with osteoblasts (46.8 ± 2.1%). Ang1-coupled alginate gels were useful to provide a niche for HSC quiescence without a co-culture system. Polymeric scaffolds containing biomimetic and cell-instructive characteristics for stem cell phenotype regulation might help create HSC niches in vitro and be useful to engineer tissues and transplant stem cells.
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Affiliation(s)
- Jae Won Lee
- Department of Bioengineering, Hanyang University, Seoul 04763, Republic of Korea
| | - Hyun Seung Kim
- Department of Bioengineering, Hanyang University, Seoul 04763, Republic of Korea
| | - Soo-Jeong Yon
- Department of Bioengineering, Hanyang University, Seoul 04763, Republic of Korea
| | - Takuya Matsumoto
- Department of Biomaterials, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Sang-Kyung Lee
- Department of Bioengineering, Hanyang University, Seoul 04763, Republic of Korea; Institute of Nano Science and Technology, Hanyang University, Seoul 04763, Republic of Korea
| | - Kuen Yong Lee
- Department of Bioengineering, Hanyang University, Seoul 04763, Republic of Korea; Institute of Nano Science and Technology, Hanyang University, Seoul 04763, Republic of Korea.
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15
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Chen Z, Guo Q, Song G, Hou Y. Molecular regulation of hematopoietic stem cell quiescence. Cell Mol Life Sci 2022; 79:218. [PMID: 35357574 PMCID: PMC11072845 DOI: 10.1007/s00018-022-04200-w] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 02/07/2022] [Accepted: 02/07/2022] [Indexed: 12/19/2022]
Abstract
Hematopoietic stem cells (HSCs) are primarily dormant in a cell-cycle quiescence state to preserve their self-renewal capacity and long-term maintenance, which is essential for the homeostasis of hematopoietic system. Dysregulation of quiescence causes HSC dysfunction and may result in aberrant hematopoiesis (e.g., myelodysplastic syndrome and bone marrow failure syndromes) and leukemia transformation. Accumulating evidence indicates that both intrinsic molecular networks and extrinsic signals regulate HSC quiescence, including cell-cycle regulators, transcription factors, epigenetic factors, and niche factors. Further, the transition between quiescence and activation of HSCs is a continuous developmental path driven by cell metabolism (e.g., protein synthesis, glycolysis, oxidative phosphorylation, and autophagy). Elucidating the complex regulatory networks of HSC quiescence will expand the knowledge of HSC hemostasis and benefit for clinical HSC use. Here, we review the current understanding and progression on the molecular and metabolic regulation of HSC quiescence, providing a more complete picture regarding the mechanisms of HSC quiescence maintenance.
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Affiliation(s)
- Zhe Chen
- Institute of Life Sciences, Chongqing Medical University, Chongqing, 400016, China
- Department of Hematology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, China
| | - Qian Guo
- Institute of Life Sciences, Chongqing Medical University, Chongqing, 400016, China
- Department of Hematology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, China
| | - Guanbin Song
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, China.
| | - Yu Hou
- Institute of Life Sciences, Chongqing Medical University, Chongqing, 400016, China.
- Department of Hematology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, China.
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16
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Discrete Logic Modeling of Cell Signaling Pathways. METHODS IN MOLECULAR BIOLOGY (CLIFTON, N.J.) 2022; 2488:159-181. [PMID: 35347689 DOI: 10.1007/978-1-0716-2277-3_12] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Cell signaling pathways often crosstalk generating complex biological behaviors observed in different cellular contexts. Frequently, laboratory experiments focus on a few putative regulators, alone unable to predict the molecular mechanisms behind the observed phenotypes. Here, systems biology complements these approaches by giving a holistic picture to complex signaling crosstalk. In particular, Boolean network models are a meaningful tool to study large network behaviors and can cope with incomplete kinetic information. By introducing a model describing pathways involved in hematopoietic stem cell maintenance, we present a general approach on how to model cell signaling pathways with Boolean network models.
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17
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Mayer IM, Hoelbl-Kovacic A, Sexl V, Doma E. Isolation, Maintenance and Expansion of Adult Hematopoietic Stem/Progenitor Cells and Leukemic Stem Cells. Cancers (Basel) 2022; 14:1723. [PMID: 35406494 PMCID: PMC8996967 DOI: 10.3390/cancers14071723] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 03/23/2022] [Accepted: 03/25/2022] [Indexed: 12/12/2022] Open
Abstract
Hematopoietic stem cells (HSCs) are rare, self-renewing cells that perch on top of the hematopoietic tree. The HSCs ensure the constant supply of mature blood cells in a tightly regulated process producing peripheral blood cells. Intense efforts are ongoing to optimize HSC engraftment as therapeutic strategy to treat patients suffering from hematopoietic diseases. Preclinical research paves the way by developing methods to maintain, manipulate and expand HSCs ex vivo to understand their regulation and molecular make-up. The generation of a sufficient number of transplantable HSCs is the Holy Grail for clinical therapy. Leukemia stem cells (LSCs) are characterized by their acquired stem cell characteristics and are responsible for disease initiation, progression, and relapse. We summarize efforts, that have been undertaken to increase the number of long-term (LT)-HSCs and to prevent differentiation towards committed progenitors in ex vivo culture. We provide an overview and compare methods currently available to isolate, maintain and enrich HSC subsets, progenitors and LSCs and discuss their individual advantages and drawbacks.
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Affiliation(s)
| | | | - Veronika Sexl
- Institute of Pharmacology and Toxicology, University of Veterinary Medicine Vienna, 1210 Vienna, Austria; (I.M.M.); (A.H.-K.); (E.D.)
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18
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Mann Z, Sengar M, Verma YK, Rajalingam R, Raghav PK. Hematopoietic Stem Cell Factors: Their Functional Role in Self-Renewal and Clinical Aspects. Front Cell Dev Biol 2022; 10:664261. [PMID: 35399522 PMCID: PMC8987924 DOI: 10.3389/fcell.2022.664261] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Accepted: 02/14/2022] [Indexed: 01/29/2023] Open
Abstract
Hematopoietic stem cells (HSCs) possess two important properties such as self-renewal and differentiation. These properties of HSCs are maintained through hematopoiesis. This process gives rise to two subpopulations, long-term and short-term HSCs, which have become a popular convention for treating various hematological disorders. The clinical application of HSCs is bone marrow transplant in patients with aplastic anemia, congenital neutropenia, sickle cell anemia, thalassemia, or replacement of damaged bone marrow in case of chemotherapy. The self-renewal attribute of HSCs ensures long-term hematopoiesis post-transplantation. However, HSCs need to be infused in large numbers to reach their target site and meet the demands since they lose their self-renewal capacity after a few passages. Therefore, a more in-depth understanding of ex vivo HSCs expansion needs to be developed to delineate ways to enhance the self-renewability of isolated HSCs. The multifaceted self-renewal process is regulated by factors, including transcription factors, miRNAs, and the bone marrow niche. A developed classical hierarchical model that outlines the hematopoiesis in a lineage-specific manner through in vivo fate mapping, barcoding, and determination of self-renewal regulatory factors are still to be explored in more detail. Thus, an in-depth study of the self-renewal property of HSCs is essentially required to be utilized for ex vivo expansion. This review primarily focuses on the Hematopoietic stem cell self-renewal pathway and evaluates the regulatory molecular factors involved in considering a targeted clinical approach in numerous malignancies and outlining gaps in the current knowledge.
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Affiliation(s)
- Zoya Mann
- Independent Researcher, New Delhi, India
| | - Manisha Sengar
- Department of Zoology, Deshbandhu College, University of Delhi, Delhi, India
| | - Yogesh Kumar Verma
- Stem Cell and Gene Therapy Research Group, Institute of Nuclear Medicine and Allied Sciences (INMAS), Delhi, India
| | - Raja Rajalingam
- Immunogenetics and Transplantation Laboratory, Department of Surgery, University of California San Francisco, San Francisco, CA, United States
| | - Pawan Kumar Raghav
- Immunogenetics and Transplantation Laboratory, Department of Surgery, University of California San Francisco, San Francisco, CA, United States
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19
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O'Reilly E, Zeinabad HA, Szegezdi E. Hematopoietic versus leukemic stem cell quiescence: Challenges and therapeutic opportunities. Blood Rev 2021; 50:100850. [PMID: 34049731 DOI: 10.1016/j.blre.2021.100850] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Revised: 04/22/2021] [Accepted: 05/07/2021] [Indexed: 12/13/2022]
Abstract
Hematopoietic stem cells (HSC) are responsible for the production of mature blood cells. To ensure that the HSC pool does not get exhausted over the lifetime of an individual, most HSCs are in a state of quiescence with only a small proportion of HSCs dividing at any one time. HSC quiescence is carefully controlled by both intrinsic and extrinsic, niche-driven mechanisms. In acute myeloid leukemia (AML), the leukemic cells overtake the hematopoietic bone marrow niche where they acquire a quiescent state. These dormant AML cells are resistant to chemotherapeutics. Because they can re-establish the disease after therapy, they are often termed as quiescent leukemic stem cells (LSC) or leukemia-initiating cells. While advancements are being made to target particular driver mutations in AML, there is less focus on how to tackle the drug resistance of quiescent LSCs. This review summarises the current knowledge on the biochemical characteristics of quiescent HSCs and LSCs, the intracellular signaling pathways and the niche-driven mechanisms that control quiescence and the key differences between HSC- and LSC-quiescence that may be exploited for therapy.
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Affiliation(s)
- Eimear O'Reilly
- Apoptosis Research Centre, Department of Biochemistry, School of Natural Sciences, National University of Ireland Galway, Galway, Ireland
| | - Hojjat Alizadeh Zeinabad
- Apoptosis Research Centre, Department of Biochemistry, School of Natural Sciences, National University of Ireland Galway, Galway, Ireland
| | - Eva Szegezdi
- Apoptosis Research Centre, Department of Biochemistry, School of Natural Sciences, National University of Ireland Galway, Galway, Ireland.
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20
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Dias IB, Bouma HR, Henning RH. Unraveling the Big Sleep: Molecular Aspects of Stem Cell Dormancy and Hibernation. Front Physiol 2021; 12:624950. [PMID: 33867999 PMCID: PMC8047423 DOI: 10.3389/fphys.2021.624950] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Accepted: 03/11/2021] [Indexed: 12/14/2022] Open
Abstract
Tissue-resident stem cells may enter a dormant state, also known as quiescence, which allows them to withstand metabolic stress and unfavorable conditions. Similarly, hibernating mammals can also enter a state of dormancy used to evade hostile circumstances, such as food shortage and low ambient temperatures. In hibernation, the dormant state of the individual and its cells is commonly known as torpor, and is characterized by metabolic suppression in individual cells. Given that both conditions represent cell survival strategies, we here compare the molecular aspects of cellular quiescence, particularly of well-studied hematopoietic stem cells, and torpor at the cellular level. Critical processes of dormancy are reviewed, including the suppression of the cell cycle, changes in metabolic characteristics, and cellular mechanisms of dealing with damage. Key factors shared by hematopoietic stem cell quiescence and torpor include a reversible activation of factors inhibiting the cell cycle, a shift in metabolism from glucose to fatty acid oxidation, downregulation of mitochondrial activity, key changes in hypoxia-inducible factor one alpha (HIF-1α), mTOR, reversible protein phosphorylation and autophagy, and increased radiation resistance. This similarity is remarkable in view of the difference in cell populations, as stem cell quiescence regards proliferating cells, while torpor mainly involves terminally differentiated cells. A future perspective is provided how to advance our understanding of the crucial pathways that allow stem cells and hibernating animals to engage in their 'great slumbers.'
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Affiliation(s)
- Itamar B. Dias
- Department of Clinical Pharmacy and Pharmacology, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Hjalmar R. Bouma
- Department of Clinical Pharmacy and Pharmacology, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
- Department of Internal Medicine, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Robert H. Henning
- Department of Clinical Pharmacy and Pharmacology, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
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21
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Dong S, Wang Q, Kao YR, Diaz A, Tasset I, Kaushik S, Thiruthuvanathan V, Zintiridou A, Nieves E, Dzieciatkowska M, Reisz JA, Gavathiotis E, D’Alessandro A, Will B, Cuervo AM. Chaperone-mediated autophagy sustains haematopoietic stem-cell function. Nature 2021; 591:117-123. [PMID: 33442062 PMCID: PMC8428053 DOI: 10.1038/s41586-020-03129-z] [Citation(s) in RCA: 136] [Impact Index Per Article: 45.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2019] [Accepted: 12/09/2020] [Indexed: 01/29/2023]
Abstract
The activation of mostly quiescent haematopoietic stem cells (HSCs) is a prerequisite for life-long production of blood cells1. This process requires major molecular adaptations to allow HSCs to meet the regulatory and metabolic requirements for cell division2-4. The mechanisms that govern cellular reprograming upon stem-cell activation, and the subsequent return of stem cells to quiescence, have not been fully characterized. Here we show that chaperone-mediated autophagy (CMA)5, a selective form of lysosomal protein degradation, is involved in sustaining HSC function in adult mice. CMA is required for protein quality control in stem cells and for the upregulation of fatty acid metabolism upon HSC activation. We find that CMA activity in HSCs decreases with age and show that genetic or pharmacological activation of CMA can restore the functionality of old mouse and human HSCs. Together, our findings provide mechanistic insights into a role for CMA in sustaining quality control, appropriate energetics and overall long-term HSC function. Our work suggests that CMA may be a promising therapeutic target for enhancing HSC function in conditions such as ageing or stem-cell transplantation.
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Affiliation(s)
- S Dong
- Department of Development and Molecular Biology, Albert Einstein College of Medicine, NY, USA;,Institute for Aging Studies, Albert Einstein College of Medicine, NY, USA
| | - Q Wang
- Department of Cell Biology, Albert Einstein College of Medicine, NY, USA
| | - YR Kao
- Department of Cell Biology, Albert Einstein College of Medicine, NY, USA
| | - A Diaz
- Department of Development and Molecular Biology, Albert Einstein College of Medicine, NY, USA;,Institute for Aging Studies, Albert Einstein College of Medicine, NY, USA
| | - I Tasset
- Department of Development and Molecular Biology, Albert Einstein College of Medicine, NY, USA;,Institute for Aging Studies, Albert Einstein College of Medicine, NY, USA
| | - S Kaushik
- Department of Development and Molecular Biology, Albert Einstein College of Medicine, NY, USA;,Institute for Aging Studies, Albert Einstein College of Medicine, NY, USA
| | - V Thiruthuvanathan
- Department of Cell Biology, Albert Einstein College of Medicine, NY, USA
| | - A Zintiridou
- Department of Cell Biology, Albert Einstein College of Medicine, NY, USA
| | - E Nieves
- Department of Development and Molecular Biology, Albert Einstein College of Medicine, NY, USA
| | - M Dzieciatkowska
- Department of Biochemistry and Molecular Genetics, University of Colorado Denver – Anschutz Medical Campus, CO, USA
| | - JA Reisz
- Department of Biochemistry and Molecular Genetics, University of Colorado Denver – Anschutz Medical Campus, CO, USA
| | - E Gavathiotis
- Institute for Aging Studies, Albert Einstein College of Medicine, NY, USA;,Department of Biochemistry, Albert Einstein College of Medicine, NY, USA;,Department of Medicine (Oncology), Albert Einstein College of Medicine, NY, USA
| | - A D’Alessandro
- Department of Biochemistry and Molecular Genetics, University of Colorado Denver – Anschutz Medical Campus, CO, USA
| | - B Will
- Institute for Aging Studies, Albert Einstein College of Medicine, NY, USA;,Department of Cell Biology, Albert Einstein College of Medicine, NY, USA;,Department of Medicine (Oncology), Albert Einstein College of Medicine, NY, USA;,Ruth L. and David S. Gottesman Institute for Stem Cell Biology, Albert Einstein College of Medicine, NY, USA,Corresponding authors: Ana Maria Cuervo MD PhD, Dept. Developmental Mol Biol, Institute for Aging Studies, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461, Phone: +1 718 430 2689, , Britta Will PhD, Department of Cell Biology, Institute for Aging Studies, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461, Phone: +1 718 430 3786,
| | - AM Cuervo
- Department of Development and Molecular Biology, Albert Einstein College of Medicine, NY, USA;,Institute for Aging Studies, Albert Einstein College of Medicine, NY, USA;,Corresponding authors: Ana Maria Cuervo MD PhD, Dept. Developmental Mol Biol, Institute for Aging Studies, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461, Phone: +1 718 430 2689, , Britta Will PhD, Department of Cell Biology, Institute for Aging Studies, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461, Phone: +1 718 430 3786,
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22
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Ikonomi N, Kühlwein SD, Schwab JD, Kestler HA. Awakening the HSC: Dynamic Modeling of HSC Maintenance Unravels Regulation of the TP53 Pathway and Quiescence. Front Physiol 2020; 11:848. [PMID: 32848827 PMCID: PMC7411231 DOI: 10.3389/fphys.2020.00848] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Accepted: 06/24/2020] [Indexed: 12/22/2022] Open
Abstract
Hematopoietic stem cells (HSCs) provide all types of blood cells during the entire life of the organism. HSCs are mainly quiescent and can eventually enter the cell cycle to differentiate. HSCs are maintained and tightly regulated in a particular environment. The stem cell niche regulates dormancy and awakening. Deregulations of this interplay can lead to hematopoietic failure and diseases. In this paper, we present a Boolean network model that recapitulates HSC regulation in virtue of external signals coming from the niche. This Boolean network integrates and summarizes the current knowledge of HSC regulation and is based on extensive literature research. Furthermore, dynamic simulations suggest a novel systemic regulation of TP53 in homeostasis. Thereby, our model indicates that TP53 activity is balanced depending on external stimulations, engaging a regulatory mechanism involving ROS regulators and RAS activated transcription factors. Finally, we investigated different mouse models and compared them to in silico knockout simulations. Here, the model could recapitulate in vivo observed behaviors and thus sustains our results.
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Affiliation(s)
- Nensi Ikonomi
- Institute of Medical Systems Biology, Ulm University, Ulm, Germany
| | - Silke D Kühlwein
- Institute of Medical Systems Biology, Ulm University, Ulm, Germany
| | - Julian D Schwab
- Institute of Medical Systems Biology, Ulm University, Ulm, Germany
| | - Hans A Kestler
- Institute of Medical Systems Biology, Ulm University, Ulm, Germany
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23
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Li M, Li Y, Yu M. CircRNA ZNF609 Knockdown Suppresses Cell Growth via Modulating miR-188/ELF2 Axis in Nasopharyngeal Carcinoma. Onco Targets Ther 2020; 13:2399-2409. [PMID: 32273713 PMCID: PMC7107005 DOI: 10.2147/ott.s234230] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Accepted: 01/16/2020] [Indexed: 12/23/2022] Open
Abstract
Background Circular RNAs (circRNAs) and microRNAs (miRNAs) have been reported to act as the important regulators in nasopharyngeal carcinoma (NPC). CircRNA ZNF609 (circ-ANF609) and miR-188 have been, respectively, reported to play a pro-cancer and anti-cancer role in NPC. The purpose of this study is to reveal the functional relation of circ-ZNF609 and miR-188 in NPC development. Methods The transcription level and protein level of genes were detected by quantitative real-time polymerase chain reaction (qRT-PCR) and Western blot assay, respectively. Cell proliferation was analyzed using 3-(4, 5-dimethyl-2-thiazolyl)-2, 5-diphenyl-2-H-tetrazolium bromide (MTT) assay. Furthermore, flow cytometry analysis was used to assess cell cycle transition and cell apoptosis rate. Besides, the interaction between miR-188 and circ-ZNF609 or E74-like factor 2 (ELF2) was predicted by starbase or microT-CDS, and then confirmed by the dual luciferase reporter assay and RIP assay. Results Circ-ZNF609 and ELF2 levels were increased and miR-188 level was decreased in NPC. Circ-ZNF609 knockdown significantly inhibited cell proliferation and cell cycle transition, as well as accelerated apoptosis in NPC cells. Interestingly, circ-ZNF609 directly bound to miR-188. Circ-ZNF609 regulated NPC cell growth through modulating miR-188 expression. In addition, miR-188 suppressed NPC cell growth via directly targeting ELF2. Finally, we confirmed that circ-ZNF609 mediated miR-188 level to modulate ELF2 expression. Conclusion Our findings demonstrated that circ-ZNF609 depletion-repressed proliferation and cell cycle transition, and induced apoptosis of NPC cells via modulation of miR-188/ELF2 axis, providing potential targets for the therapy of NPC.
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Affiliation(s)
- Mingyan Li
- Department of Otolaryngology-Head and Neck Surgery, Zhengzhou Central Hospital Affiliated to Zhengzhou University, Zhengzhou, People's Republic of China
| | - Yujie Li
- Department of Otolaryngology-Head and Neck Surgery, Zhengzhou Central Hospital Affiliated to Zhengzhou University, Zhengzhou, People's Republic of China
| | - Min Yu
- Department of Otolaryngology-Head and Neck Surgery, Zhengzhou Central Hospital Affiliated to Zhengzhou University, Zhengzhou, People's Republic of China
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24
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Kosti A, Du L, Shivram H, Qiao M, Burns S, Garcia JG, Pertsemlidis A, Iyer VR, Kokovay E, Penalva LOF. ELF4 Is a Target of miR-124 and Promotes Neuroblastoma Proliferation and Undifferentiated State. Mol Cancer Res 2020; 18:68-78. [PMID: 31624087 PMCID: PMC6942226 DOI: 10.1158/1541-7786.mcr-19-0187] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Revised: 09/06/2019] [Accepted: 10/14/2019] [Indexed: 12/12/2022]
Abstract
13-Cis-retinoic acid (RA) is typically used in postremission maintenance therapy in patients with neuroblastoma. However, side effects and recurrence are often observed. We investigated the use of miRNAs as a strategy to replace RA as promoters of differentiation. miR-124 was identified as the top candidate in a functional screen. Genomic target analysis indicated that repression of a network of transcription factors (TF) could be mediating most of miR-124's effect in driving differentiation. To advance miR-124 mimic use in therapy and better define its mechanism of action, a high-throughput siRNA morphologic screen focusing on its TF targets was conducted and ELF4 was identified as a leading candidate for miR-124 repression. By altering its expression levels, we showed that ELF4 maintains neuroblastoma in an undifferentiated state and promotes proliferation. Moreover, ELF4 transgenic expression was able to counteract the neurogenic effect of miR-124 in neuroblastoma cells. With RNA sequencing, we established the main role of ELF4 to be regulation of cell-cycle progression, specifically through the DREAM complex. Interestingly, several cell-cycle genes activated by ELF4 are repressed by miR-124, suggesting that they might form a TF-miRNA regulatory loop. Finally, we showed that high ELF4 expression is often observed in neuroblastomas and is associated with poor survival. IMPLICATIONS: miR-124 induces neuroblastoma differentiation partially through the downregulation of TF ELF4, which drives neuroblastoma proliferation and its undifferentiated phenotype.
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Affiliation(s)
- Adam Kosti
- Department of Cell Systems and Anatomy, UT Health Science Center at San Antonio, San Antonio, Texas
- Greehey Children's Cancer Research Institute, UT Health Science Center at San Antonio, San Antonio, Texas
| | - Liqin Du
- Department of Chemistry and Biochemistry, Texas State University, San Marcos, Texas
| | - Haridha Shivram
- Department of Molecular Biosciences and Livestrong Cancer Institutes, Dell Medical School, University of Texas at Austin, Austin, Texas
| | - Mei Qiao
- Greehey Children's Cancer Research Institute, UT Health Science Center at San Antonio, San Antonio, Texas
| | - Suzanne Burns
- Greehey Children's Cancer Research Institute, UT Health Science Center at San Antonio, San Antonio, Texas
| | - Juan Gabriel Garcia
- Department of Cell Systems and Anatomy, UT Health Science Center at San Antonio, San Antonio, Texas
| | - Alexander Pertsemlidis
- Department of Cell Systems and Anatomy, UT Health Science Center at San Antonio, San Antonio, Texas
- Greehey Children's Cancer Research Institute, UT Health Science Center at San Antonio, San Antonio, Texas
- Department of Pediatrics, UT Health Science Center at San Antonio, San Antonio, Texas
| | - Vishwanath R Iyer
- Department of Molecular Biosciences and Livestrong Cancer Institutes, Dell Medical School, University of Texas at Austin, Austin, Texas
| | - Erzsebet Kokovay
- Department of Cell Systems and Anatomy, UT Health Science Center at San Antonio, San Antonio, Texas
| | - Luiz O F Penalva
- Department of Cell Systems and Anatomy, UT Health Science Center at San Antonio, San Antonio, Texas.
- Greehey Children's Cancer Research Institute, UT Health Science Center at San Antonio, San Antonio, Texas
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25
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Wang D, Zhang Z, Cui S, Zhao Y, Craft S, Fikrig E, You F. ELF4 facilitates innate host defenses against Plasmodium by activating transcription of Pf4 and Ppbp. J Biol Chem 2019; 294:7787-7796. [PMID: 30898878 DOI: 10.1074/jbc.ra118.006321] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Revised: 03/08/2019] [Indexed: 12/12/2022] Open
Abstract
Platelet factor 4 (PF4) is an anti-Plasmodium component of platelets. It is expressed in megakaryocytes and released from platelets following infection with Plasmodium Innate immunity is crucial for the host anti-Plasmodium response, in which type I interferon plays an important role. Whether there is cross-talk between innate immune signaling and the production of anti-Plasmodium defense peptides is unknown. Here we demonstrate that E74, like ETS transcription factor 4 (ELF4), a type I interferon activator, can help protect the host from Plasmodium yoelii infection. Mechanically, ELF4 binds to the promoter of genes of two C-X-C chemokines, Pf4 and pro-platelet basic protein (Ppbp), initiating the transcription of these two genes, thereby enhancing PF4-mediated killing of parasites from infected erythrocytes. Elf4 -/- mice are much more susceptible to Plasmodium infection than WT littermates. The expression level of Pf4 and Ppbp in megakaryocytes from Elf4 -/- mice is much lower than in those from control animals, resulting in increased parasitemia. In conclusion, our study uncovered a distinct role of ELF4, an innate immune molecule, in host defense against malaria.
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Affiliation(s)
- Dandan Wang
- From the Institute of Systems Biomedicine, Department of Immunology, and Beijing Key Laboratory of Tumor Systems Biology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China 100191
| | - Zeming Zhang
- From the Institute of Systems Biomedicine, Department of Immunology, and Beijing Key Laboratory of Tumor Systems Biology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China 100191
| | - Shuang Cui
- the Key Laboratory for Neuroscience, Neuroscience Research Institute, Peking University, Beijing, China 100191.,the National Health and Family Planning Commission of the People's Republic of China, Ministry of Education, Beijing, China 100083, and
| | - Yingchi Zhao
- From the Institute of Systems Biomedicine, Department of Immunology, and Beijing Key Laboratory of Tumor Systems Biology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China 100191
| | - Samuel Craft
- the Section of Infectious Diseases, Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut 06520
| | - Erol Fikrig
- the Section of Infectious Diseases, Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut 06520
| | - Fuping You
- From the Institute of Systems Biomedicine, Department of Immunology, and Beijing Key Laboratory of Tumor Systems Biology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China 100191,
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26
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Suico MA, Shuto T, Kai H. Roles and regulations of the ETS transcription factor ELF4/MEF. J Mol Cell Biol 2018; 9:168-177. [PMID: 27932483 PMCID: PMC5907832 DOI: 10.1093/jmcb/mjw051] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2016] [Accepted: 12/21/2016] [Indexed: 12/12/2022] Open
Abstract
Most E26 transformation-specific (ETS) transcription factors are involved in the pathogenesis and progression of cancer. This is in part due to the roles of ETS transcription factors in basic biological processes such as growth, proliferation, and differentiation, and also because of their regulatory functions that have physiological relevance in tumorigenesis, immunity, and basal cellular homoeostasis. A member of the E74-like factor (ELF) subfamily of the ETS transcription factor family—myeloid elf-1-like factor (MEF), designated as ELF4—has been shown to be critically involved in immune response and signalling, osteogenesis, adipogenesis, cancer, and stem cell quiescence. ELF4 carries out these functions as a transcriptional activator or through interactions with its partner proteins. Mutations in ELF4 cause aberrant interactions and induce downstream processes that may lead to diseased cells. Knowing how ELF4 impinges on certain cellular processes and how it is regulated in the cells can lead to a better understanding of the physiological and pathological consequences of modulated ELF4 activity.
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Affiliation(s)
- Mary Ann Suico
- Department of Molecular Medicine, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Kumamoto 862-0973, Japan
| | - Tsuyoshi Shuto
- Department of Molecular Medicine, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Kumamoto 862-0973, Japan
| | - Hirofumi Kai
- Department of Molecular Medicine, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Kumamoto 862-0973, Japan
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27
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Yao C, Kobayashi M, Chen S, Nabinger SC, Gao R, Liu SZ, Asai T, Liu Y. Necdin modulates leukemia-initiating cell quiescence and chemotherapy response. Oncotarget 2017; 8:87607-87622. [PMID: 29152105 PMCID: PMC5675657 DOI: 10.18632/oncotarget.20999] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Accepted: 08/26/2017] [Indexed: 12/29/2022] Open
Abstract
Acute myeloid leukemia (AML) is a devastating illness which carries a very poor prognosis, with most patients living less than 18 months. Leukemia relapse may occur because current therapies eliminate proliferating leukemia cells but fail to eradicate quiescent leukemia-initiating cells (LICs) that can reinitiate the disease after a period of latency. While we demonstrated that p53 target gene Necdin maintains hematopoietic stem cell (HSC) quiescence, its roles in LIC quiescence and response to chemotherapy are unclear. In this study, we utilized two well-established murine models of human AML induced by MLL-AF9 or AML1-ETO9a to determine the role of Necdin in leukemogenesis. We found that loss of Necdin decreased the number of functional LICs and enhanced myeloid differentiation in vivo, leading to delayed development of leukemia induced by MLL-AF9. Importantly, Necdin null LICs expressing MLL-AF9 were less quiescent than wild-type LICs. Further, loss of Necdin enhanced the response of MLL-AF9+ leukemia cells to chemotherapy treatment, manifested by decreased viability and enhanced apoptosis. We observed decreased expression of Bcl2 and increased expression of p53 and its target gene Bax in Necdin null leukemia cells following chemotherapy treatment, indicating that p53-dependent apoptotic pathways may be activated in the absence of Necdin. In addition, we found that loss of Necdin decreased the engraftment of AML1-ETO9a+ hematopoietic stem and progenitor cells in transplantation assays. However, Necdin-deficiency did not affect the response of AML1-ETO9a+ hematopoietic cells to chemotherapy treatment. Thus, Necdin regulates leukemia-initiating cell quiescence and chemotherapy response in a context-dependent manner. Our findings suggest that pharmacological inhibition of Necdin may hold potential as a novel therapy for leukemia patients with MLL translocations.
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Affiliation(s)
- Chonghua Yao
- Department of Rheumatism, Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Michihiro Kobayashi
- Department of Pediatrics, Herman B Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Sisi Chen
- Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Sarah C Nabinger
- Department of Pediatrics, Herman B Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Rui Gao
- Department of Pediatrics, Herman B Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Stephen Z Liu
- Department of Pediatrics, Herman B Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Takashi Asai
- Sylvester Comprehensive Cancer Center, Miller School of Medicine, University of Miami, Miami, FL, USA
| | - Yan Liu
- Department of Pediatrics, Herman B Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN, USA.,Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, IN, USA
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28
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Guan FHX, Bailey CG, Metierre C, O'Young P, Gao D, Khoo TL, Holst J, Rasko JEJ. The antiproliferative ELF2 isoform, ELF2B, induces apoptosis in vitro and perturbs early lymphocytic development in vivo. J Hematol Oncol 2017; 10:75. [PMID: 28351373 PMCID: PMC5371273 DOI: 10.1186/s13045-017-0446-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Accepted: 03/20/2017] [Indexed: 01/08/2023] Open
Abstract
Background ELF2 (E74-like factor 2) also known as NERF (new Ets-related factor), a member of the Ets family of transcription factors, regulates genes important in B and T cell development, cell cycle progression, and angiogenesis. Conserved ELF2 isoforms, ELF2A, and ELF2B, arising from alternative promoter usage can exert opposing effects on target gene expression. ELF2A activates, whilst ELF2B represses, gene expression, and the balance of expression between these isoforms may be important in maintaining normal cellular function. Methods We compared the function of ELF2 isoforms ELF2A and ELF2B with other ELF subfamily proteins ELF1 and ELF4 in primary and cancer cell lines using proliferation, colony-forming, cell cycle, and apoptosis assays. We further examined the role of ELF2 isoforms in haemopoietic development using a Rag1-/-murine bone marrow reconstitution model. Results ELF2B overexpression significantly reduced cell proliferation and clonogenic capacity, minimally disrupted cell cycle kinetics, and induced apoptosis. In contrast, ELF2A overexpression only marginally reduced clonogenic capacity with little effect on proliferation, cell cycle progression, or apoptosis. Deletion of the N-terminal 19 amino acids unique to ELF2B abrogated the antiproliferative and proapoptotic functions of ELF2B thereby confirming its crucial role. Mice expressing Elf2a or Elf2b in haemopoietic cells variously displayed perturbations in the pre-B cell stage and multiple stages of T cell development. Mature B cells, T cells, and myeloid cells in steady state were unaffected, suggesting that the main role of ELF2 is restricted to the early development of B and T cells and that compensatory mechanisms exist. No differences in B and T cell development were observed between ELF2 isoforms. Conclusions We conclude that ELF2 isoforms are important regulators of cellular proliferation, cell cycle progression, and apoptosis. In respect to this, ELF2B acts in a dominant negative fashion compared to ELF2A and as a putative tumour suppressor gene. Given that these cellular processes are critical during haemopoiesis, we propose that the regulatory interplay between ELF2 isoforms contributes substantially to early B and T cell development. Electronic supplementary material The online version of this article (doi:10.1186/s13045-017-0446-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Fiona H X Guan
- Gene and Stem Cell Therapy Program, Centenary Institute, University of Sydney, Camperdown, NSW, 2050, Australia.,Sydney Medical School, University of Sydney, Camperdown, NSW, 2006, Australia
| | - Charles G Bailey
- Gene and Stem Cell Therapy Program, Centenary Institute, University of Sydney, Camperdown, NSW, 2050, Australia.,Sydney Medical School, University of Sydney, Camperdown, NSW, 2006, Australia
| | - Cynthia Metierre
- Gene and Stem Cell Therapy Program, Centenary Institute, University of Sydney, Camperdown, NSW, 2050, Australia
| | - Patrick O'Young
- Gene and Stem Cell Therapy Program, Centenary Institute, University of Sydney, Camperdown, NSW, 2050, Australia
| | - Dadi Gao
- Gene and Stem Cell Therapy Program, Centenary Institute, University of Sydney, Camperdown, NSW, 2050, Australia.,Sydney Medical School, University of Sydney, Camperdown, NSW, 2006, Australia
| | - Teh Liane Khoo
- Gene and Stem Cell Therapy Program, Centenary Institute, University of Sydney, Camperdown, NSW, 2050, Australia.,Sydney Medical School, University of Sydney, Camperdown, NSW, 2006, Australia
| | - Jeff Holst
- Sydney Medical School, University of Sydney, Camperdown, NSW, 2006, Australia.,Origins of Cancer Program, Centenary Institute, University of Sydney, Camperdown, NSW, 2050, Australia
| | - John E J Rasko
- Gene and Stem Cell Therapy Program, Centenary Institute, University of Sydney, Camperdown, NSW, 2050, Australia. .,Sydney Medical School, University of Sydney, Camperdown, NSW, 2006, Australia. .,Cell and Molecular Therapies, Royal Prince Alfred Hospital, Camperdown, NSW, 2050, Australia.
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29
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Bizzarri M, Cucina A. SMT and TOFT: Why and How They are Opposite and Incompatible Paradigms. Acta Biotheor 2016; 64:221-39. [PMID: 27283400 DOI: 10.1007/s10441-016-9281-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Accepted: 05/23/2016] [Indexed: 01/02/2023]
Abstract
The Somatic Mutation Theory (SMT) has been challenged on its fundamentals by the Tissue Organization Field Theory of Carcinogenesis (TOFT). However, a recent publication has questioned whether TOFT could be a valid alternative theory of carcinogenesis to that presented by SMT. Herein we critically review arguments supporting the irreducible opposition between the two theoretical approaches by highlighting differences regarding the philosophical, methodological and experimental approaches on which they respectively rely. We conclude that SMT has not explained carcinogenesis due to severe epistemological and empirical shortcomings, while TOFT is gaining momentum. The main issue is actually to submit SMT to rigorous testing. This concern includes the imperatives to seek evidence for disproving one's hypothesis, and to consider the whole, and not just selective evidence.
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Affiliation(s)
- Mariano Bizzarri
- Department of Experimental Medicine, Sapienza University of Rome, Viale Regina Elena 324, 00161, Rome, Italy.
- Systems Biology Group Lab, Sapienza University of Rome, Via Antonio Scarpa 14, 00161, Rome, Italy.
| | - Alessandra Cucina
- Department of Surgery "Pietro Valdoni", Sapienza University of Rome, Via A. Scarpa 14, 00161, Rome, Italy
- Azienda Policlinico Umberto I, Viale del Policlinico 155, 00161, Rome, Italy
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30
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Schoenhals M, Jourdan M, Seckinger A, Pantesco V, Hose D, Kassambara A, Moreaux J, Klein B. Forced KLF4 expression increases the generation of mature plasma cells and uncovers a network linked with plasma cell stage. Cell Cycle 2016; 15:1919-28. [PMID: 27230497 DOI: 10.1080/15384101.2016.1191709] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
A role of the transcription factor Krüppel-like factor 4 (KLF4) in the generation of mature plasma cells (PC) is unknown. Indeed, KLF4 is critical in controlling the differentiation of various cell linages, particularly monocytes and epithelial cells. KLF4 is expressed at low levels in pro-B cells and its expression increases as they mature into pre-B cells, resting naïve B cells and memory B cells. We show here that KLF4 is expressed in human bone marrow plasma cells and its function was studied using an in vitro model of differentiation of memory B cells into long lived plasma cells. KLF4 is rapidly lost when memory B cells differentiate into highly cell cycling plasmablasts, poorly cycling early plasma cells and then quiescent long-lived plasma cells. A forced expression of KLF4 in plasmablasts enhances the yield of their differentiation into early plasma cell and long lived plasma cells, by inhibiting apoptosis and upregulating previously unknown plasma cell pathways.
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Affiliation(s)
- Matthieu Schoenhals
- a Department of Biological Hematology , CHU Montpellier , Montpellier , France
| | - Michel Jourdan
- b Institute of Human Genetics, CNRS-UPR1142 , Montpellier , France
| | - Anja Seckinger
- c Medizinische Klinik und Poliklinik V, Universitätsklinikum Heidelberg , Heidelberg , Germany.,d Nationales Centrum für Tumorerkrankungen , Heidelberg , Germany
| | | | - Dirk Hose
- c Medizinische Klinik und Poliklinik V, Universitätsklinikum Heidelberg , Heidelberg , Germany.,d Nationales Centrum für Tumorerkrankungen , Heidelberg , Germany
| | | | - Jérôme Moreaux
- a Department of Biological Hematology , CHU Montpellier , Montpellier , France.,b Institute of Human Genetics, CNRS-UPR1142 , Montpellier , France.,f University of Montpellier 1, UFR de Médecine , Montpellier , France
| | - Bernard Klein
- a Department of Biological Hematology , CHU Montpellier , Montpellier , France.,b Institute of Human Genetics, CNRS-UPR1142 , Montpellier , France.,f University of Montpellier 1, UFR de Médecine , Montpellier , France
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Generation of a novel, multi-stage, progressive, and transplantable model of plasma cell neoplasms. Sci Rep 2016; 6:22760. [PMID: 26961797 PMCID: PMC4785351 DOI: 10.1038/srep22760] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2015] [Accepted: 02/04/2016] [Indexed: 11/08/2022] Open
Abstract
Multiple myeloma is a plasma cell neoplasm with an extremely variable clinical
course. Animal models are needed to better understand its pathophysiology and for
preclinical testing of potential therapeutic agents. Hematopoietic cells expressing
the hypermorphic Rad50s allele show hematopoietic
failure, which can be mitigated by the lack of a transcription factor, Mef/Elf4.
However, we find that 70% of
Mef−/−Rad50s/s
mice die from multiple myeloma or other plasma cell neoplasms. These mice initially
show an abnormal plasma cell proliferation and monoclonal protein production, and
then develop anemia and a decreased bone mineral density. Tumor cells can be
serially transplanted and according to array CGH and whole exome sequencing, the
pathogenesis of plasma cell neoplasms in these mice is not linked to activation of a
specific oncogene, or inactivation of a specific tumor suppressor. This model
recapitulates the systemic manifestations of human plasma cell neoplasms, and
implicates cooperativity between the Rad50s and
Mef/Elf4 pathways in initiating myelomagenic mutations that promote plasma cell
transformation.
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Ando M, Kawazu M, Ueno T, Koinuma D, Ando K, Koya J, Kataoka K, Yasuda T, Yamaguchi H, Fukumura K, Yamato A, Soda M, Sai E, Yamashita Y, Asakage T, Miyazaki Y, Kurokawa M, Miyazono K, Nimer SD, Yamasoba T, Mano H. Mutational Landscape and Antiproliferative Functions of ELF Transcription Factors in Human Cancer. Cancer Res 2016; 76:1814-24. [DOI: 10.1158/0008-5472.can-14-3816] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2015] [Accepted: 12/21/2015] [Indexed: 11/16/2022]
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Suico MA, Taura M, Kudo E, Gotoh K, Shuto T, Okada S, Kai H. The ETS Factor Myeloid Elf-1-Like Factor (MEF)/Elf4 Is Transcriptionally and Functionally Activated by Hypoxia. Biol Pharm Bull 2016; 39:641-647. [PMID: 27040637 DOI: 10.1248/bpb.b15-00796] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2024]
Abstract
Hypoxia-inducible factor (HIF)-1α is a transcription factor belonging to the HIF family that is activated in mammalian cells during conditions of low oxygen tension or hypoxia to induce an adaptive response and promote cell survival. Some of the genes targeted by HIF-1α are important for angiogenesis and proliferation. Here, we found that the E26 transformation-specific (ETS) transcription factor myeloid elf-1-like factor (MEF)/Elf4 is activated by HIF-1α. MEF induces genes such as human beta-defensin 2 (HβD2) and perforin (PRF1), and is known to affect the cell cycle. Treatment with hypoxia mimetic CoCl2 or low O2 incubation up-regulated MEF mRNA and protein levels in various cell lines. HIF-1α overexpression in HEK293 cells also increased MEF mRNA and protein levels. In contrast, HIF-1α knockdown by small interfering RNA (siRNA) suppressed the induction of MEF in response to hypoxia. HIF-1α binds to the hypoxia response element in the MEF promoter region (-200 bp) and activates MEF promoter under hypoxia condition. The induction of MEF by hypoxia/HIF-1α correlated with the increase of MEF target genes HβD2 and PRF1. Intriguingly, the hypoxia-induced expression of HIF-1α target gene vascular endothelial growth factor (VEGF) was enhanced by the exogenous addition of MEF. Overall, these data indicate that hypoxia or HIF-1α positively regulates MEF expression and function.
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Affiliation(s)
- Mary Ann Suico
- Department of Molecular Medicine, Faculty of Pharmaceutical Sciences, Kumamoto University
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34
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Wang Z, Ema H. Mechanisms of self-renewal in hematopoietic stem cells. Int J Hematol 2015; 103:498-509. [DOI: 10.1007/s12185-015-1919-5] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Accepted: 11/30/2015] [Indexed: 11/29/2022]
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35
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Feitelson MA, Arzumanyan A, Kulathinal RJ, Blain SW, Holcombe RF, Mahajna J, Marino M, Martinez-Chantar ML, Nawroth R, Sanchez-Garcia I, Sharma D, Saxena NK, Singh N, Vlachostergios PJ, Guo S, Honoki K, Fujii H, Georgakilas AG, Bilsland A, Amedei A, Niccolai E, Amin A, Ashraf SS, Boosani CS, Guha G, Ciriolo MR, Aquilano K, Chen S, Mohammed SI, Azmi AS, Bhakta D, Halicka D, Keith WN, Nowsheen S. Sustained proliferation in cancer: Mechanisms and novel therapeutic targets. Semin Cancer Biol 2015; 35 Suppl:S25-S54. [PMID: 25892662 PMCID: PMC4898971 DOI: 10.1016/j.semcancer.2015.02.006] [Citation(s) in RCA: 419] [Impact Index Per Article: 46.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2014] [Revised: 02/20/2015] [Accepted: 02/23/2015] [Indexed: 02/08/2023]
Abstract
Proliferation is an important part of cancer development and progression. This is manifest by altered expression and/or activity of cell cycle related proteins. Constitutive activation of many signal transduction pathways also stimulates cell growth. Early steps in tumor development are associated with a fibrogenic response and the development of a hypoxic environment which favors the survival and proliferation of cancer stem cells. Part of the survival strategy of cancer stem cells may manifested by alterations in cell metabolism. Once tumors appear, growth and metastasis may be supported by overproduction of appropriate hormones (in hormonally dependent cancers), by promoting angiogenesis, by undergoing epithelial to mesenchymal transition, by triggering autophagy, and by taking cues from surrounding stromal cells. A number of natural compounds (e.g., curcumin, resveratrol, indole-3-carbinol, brassinin, sulforaphane, epigallocatechin-3-gallate, genistein, ellagitannins, lycopene and quercetin) have been found to inhibit one or more pathways that contribute to proliferation (e.g., hypoxia inducible factor 1, nuclear factor kappa B, phosphoinositide 3 kinase/Akt, insulin-like growth factor receptor 1, Wnt, cell cycle associated proteins, as well as androgen and estrogen receptor signaling). These data, in combination with bioinformatics analyses, will be very important for identifying signaling pathways and molecular targets that may provide early diagnostic markers and/or critical targets for the development of new drugs or drug combinations that block tumor formation and progression.
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Affiliation(s)
- Mark A Feitelson
- Department of Biology, Temple University, Philadelphia, PA, United States.
| | - Alla Arzumanyan
- Department of Biology, Temple University, Philadelphia, PA, United States
| | - Rob J Kulathinal
- Department of Biology, Temple University, Philadelphia, PA, United States
| | - Stacy W Blain
- Department of Pediatrics, State University of New York, Downstate Medical Center, Brooklyn, NY, United States
| | - Randall F Holcombe
- Tisch Cancer Institute, Mount Sinai School of Medicine, New York, NY, United States
| | - Jamal Mahajna
- MIGAL-Galilee Technology Center, Cancer Drug Discovery Program, Kiryat Shmona, Israel
| | - Maria Marino
- Department of Science, University Roma Tre, V.le G. Marconi, 446, 00146 Rome, Italy
| | - Maria L Martinez-Chantar
- Metabolomic Unit, CIC bioGUNE, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas, Technology Park of Bizkaia, Bizkaia, Spain
| | - Roman Nawroth
- Department of Urology, Klinikum rechts der Isar der Technischen Universität München, Munich, Germany
| | - Isidro Sanchez-Garcia
- Experimental Therapeutics and Translational Oncology Program, Instituto de Biología Molecular y Celular del Cáncer, CSIC/Universidad de Salamanca, Salamanca, Spain
| | - Dipali Sharma
- Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, United States
| | - Neeraj K Saxena
- Department of Oncology, Johns Hopkins University School of Medicine and the Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD, United States
| | - Neetu Singh
- Tissue and Cell Culture Unit, CSIR-Central Drug Research Institute, Council of Scientific & Industrial Research, Lucknow, India
| | | | - Shanchun Guo
- Department of Microbiology, Biochemistry & Immunology, Morehouse School of Medicine, Atlanta, GA, United States
| | - Kanya Honoki
- Department of Orthopedic Surgery, Nara Medical University, Kashihara 634-8521, Japan
| | - Hiromasa Fujii
- Department of Orthopedic Surgery, Nara Medical University, Kashihara 634-8521, Japan
| | - Alexandros G Georgakilas
- Physics Department, School of Applied Mathematical and Physical Sciences, National Technical University of Athens, Zografou 15780, Athens, Greece
| | - Alan Bilsland
- Institute of Cancer Sciences, University of Glasgow, UK
| | - Amedeo Amedei
- Department of Experimental and Clinical Medicine, University of Florence, 50134 Florence, Italy
| | - Elena Niccolai
- Department of Experimental and Clinical Medicine, University of Florence, 50134 Florence, Italy
| | - Amr Amin
- Department of Biology, College of Science, UAE University, Al-Ain, United Arab Emirates
| | - S Salman Ashraf
- Department of Chemistry, College of Science, UAE University, Al-Ain, United Arab Emirates
| | - Chandra S Boosani
- Department of BioMedical Sciences, Creighton University, Omaha, NE, United States
| | - Gunjan Guha
- School of Chemical and Bio Technology, SASTRA University, Thanjavur, India
| | - Maria Rosa Ciriolo
- Department of Biology, University of Rome "Tor Vergata", 00133 Rome, Italy
| | - Katia Aquilano
- Department of Biology, University of Rome "Tor Vergata", 00133 Rome, Italy
| | - Sophie Chen
- Department of Research and Development, Ovarian and Prostate Cancer Research Trust Laboratory, Guildford, Surrey GU2 7YG, United Kingdom
| | - Sulma I Mohammed
- Department of Comparative Pathobiology, Purdue University Center for Cancer Research, West Lafayette, IN, United States
| | - Asfar S Azmi
- Department of Pathology, Karmonas Cancer Institute, Wayne State University School of Medicine, Detroit, MI, United States
| | - Dipita Bhakta
- School of Chemical and Bio Technology, SASTRA University, Thanjavur, India
| | - Dorota Halicka
- Brander Cancer Research Institute, Department of Pathology, New York Medical College, Valhalla, NY, United States
| | - W Nicol Keith
- Institute of Cancer Sciences, University of Glasgow, UK
| | - Somaira Nowsheen
- Mayo Graduate School, Mayo Medical School, Mayo Clinic Medical Scientist Training Program, Rochester, MN, United States
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The transcription factor Foxm1 is essential for the quiescence and maintenance of hematopoietic stem cells. Nat Immunol 2015; 16:810-8. [PMID: 26147687 PMCID: PMC4509925 DOI: 10.1038/ni.3204] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2015] [Accepted: 05/19/2015] [Indexed: 12/17/2022]
Abstract
Foxm1, a mammalian Forkhead Box M1 protein, is known as a typical proliferation-associated transcription factor. Here, we find that Foxm1 was essential for maintenance of hematopoietic stem cell (HSC) quiescence and self-renewal capacity in vivo in mice. Reducing expression of FOXM1 also decreased quiescence in human CD34+ HSCs and progenitor cells and its down-regulation was associated with a subset of myelodysplastic syndrome (MDS). Mechanistically, Foxm1 directly bound to the promoter region of Nurr1, inducing transcription while forced expression of Nurr1 reversed the loss of quiescence observed in Foxm1-deficient cells in vivo. Thus, our studies reveal a previously unrecognized role of Foxm1 as a critical regulator of HSC quiescence and self-renewal, mediated at least in part, by control of Nurr1 expression.
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37
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Cao Y, Zhang A, Cai J, Yuan N, Lin W, Liu S, Xu F, Song L, Li X, Fang Y, Wang Z, Wang Z, Wang J, Zhang H, Zhao W, Hu S, Zhang S, Wang J. Autophagy regulates the cell cycle of murine HSPCs in a nutrient-dependent manner. Exp Hematol 2015; 43:229-42. [DOI: 10.1016/j.exphem.2014.11.002] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2014] [Revised: 10/22/2014] [Accepted: 11/05/2014] [Indexed: 12/11/2022]
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38
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Nakamura-Ishizu A, Takizawa H, Suda T. The analysis, roles and regulation of quiescence in hematopoietic stem cells. Development 2015; 141:4656-66. [PMID: 25468935 DOI: 10.1242/dev.106575] [Citation(s) in RCA: 149] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Tissue homeostasis requires the presence of multipotent adult stem cells that are capable of efficient self-renewal and differentiation; some of these have been shown to exist in a dormant, or quiescent, cell cycle state. Such quiescence has been proposed as a fundamental property of hematopoietic stem cells (HSCs) in the adult bone marrow, acting to protect HSCs from functional exhaustion and cellular insults to enable lifelong hematopoietic cell production. Recent studies have demonstrated that HSC quiescence is regulated by a complex network of cell-intrinsic and -extrinsic factors. In addition, detailed single-cell analyses and novel imaging techniques have identified functional heterogeneity within quiescent HSC populations and have begun to delineate the topological organization of quiescent HSCs. Here, we review the current methods available to measure quiescence in HSCs and discuss the roles of HSC quiescence and the various mechanisms by which HSC quiescence is maintained.
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Affiliation(s)
- Ayako Nakamura-Ishizu
- Department of Cell Differentiation, The Sakaguchi Laboratory, Keio University, 35 Shinano-machi, Shinjuku-ku, Tokyo 160-8582, Japan Cancer Science Institute, National University of Singapore, 14 Medical Drive MD6, Centre for Translational Medicine, 117599 Singapore
| | - Hitoshi Takizawa
- Division of Hematology, University Hospital Zurich, Raemistrasse 100, Zurich 8091, Switzerland
| | - Toshio Suda
- Department of Cell Differentiation, The Sakaguchi Laboratory, Keio University, 35 Shinano-machi, Shinjuku-ku, Tokyo 160-8582, Japan Cancer Science Institute, National University of Singapore, 14 Medical Drive MD6, Centre for Translational Medicine, 117599 Singapore
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39
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Povinelli BJ, Srivastava P, Nemeth MJ. Related-to-receptor tyrosine kinase receptor regulates hematopoietic stem and progenitor sensitivity to myelosuppressive injury in mice. Exp Hematol 2014; 43:243-252.e1. [PMID: 25461251 DOI: 10.1016/j.exphem.2014.10.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2014] [Revised: 10/07/2014] [Accepted: 10/30/2014] [Indexed: 11/25/2022]
Abstract
Maintaining a careful balance between quiescence and proliferation of hematopoietic stem and progenitor cells (HSPCs) is necessary for lifelong blood formation. Previously, we demonstrated that the Wnt5a ligand inhibits HSPC proliferation through a functional interaction with a noncanonical Wnt ligand receptor termed 'related-to-receptor tyrosine kinase' (Ryk). Expression of Ryk on HSPCs in vivo is associated with a lower rate of proliferation, and, following treatment with fluorouracil (5-FU), the percentage of Ryk(+/high) HSPCs increased and the percentage of Ryk(-/low) HSPCs decreased. Based on these data, we hypothesized that one function of the Ryk receptor is to protect HSPCs from the effects of myeloablative agents. We found that Ryk expression on HSPCs is associated with lower rates of apoptosis following 5-FU and radiation. Transient inhibition of Ryk signaling in vivo resulted in increased hematopoietic-stem-cell proliferation and decreased hematopoietic-stem-cell function in bone marrow transplant assays. Furthermore, inhibition of Ryk signaling sensitized HSPCs to 5-FU treatment in association with increased levels of reactive oxygen species. Together, these results demonstrated an association between Ryk expression and survival of HSPCs following suppressive injury.
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Affiliation(s)
- Benjamin J Povinelli
- Department of Molecular and Cellular Biology, Roswell Park Cancer Institute, Buffalo, NY, United States
| | - Pragya Srivastava
- Department of Medicine, Roswell Park Cancer Institute, Buffalo, NY, United States
| | - Michael J Nemeth
- Department of Medicine, Roswell Park Cancer Institute, Buffalo, NY, United States; Department of Immunology, Roswell Park Cancer Institute, Buffalo, NY, United States.
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Suico MA, Fukuda R, Miyakita R, Koyama K, Taura M, Shuto T, Kai H. The transcription factor MEF/Elf4 is dually modulated by p53-MDM2 axis and MEF-MDM2 autoregulatory mechanism. J Biol Chem 2014; 289:26143-26154. [PMID: 25081543 DOI: 10.1074/jbc.m114.580209] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Myeloid Elf-1-like factor (MEF) or Elf4 is an ETS transcription factor that activates innate immunity-associated genes such as lysozyme (LYZ), human β-defensin 2 (HβD2), and interleukin-8 (IL-8) in epithelial cells and is also known to influence cell cycle progression. MEF is transcriptionally activated by E2F1, but the E2F1-mediated transcriptional activation is inhibited by p53 through E2F1-p53 protein interaction. Although the transcriptional activation of MEF has been investigated in depth, its post-translational regulation is not well explored. By overexpressing MEF cDNA in human cell lines, here we show that MEF protein expression is suppressed by p53. By screening a number of E3 ligases regulated by p53, we found that MDM2 is involved in the effect of p53 on MEF. MDM2 is transcriptionally activated by p53 and interacts with MEF protein to enhance MEF degradation. MDM2 reduces MEF protein expression, as well as stability and function of MEF as transcriptional activator. Furthermore, MDM2 was able to down-regulate MEF in the absence of p53, indicating a p53-independent effect on MEF. Notably, MEF transcriptionally activates MDM2, which was previously demonstrated to be the mechanism by which MEF suppresses the p53 protein. These results reveal that in addition to the potential of MEF to down-regulate p53 by transcriptionally activating E3 ligase MDM2, MEF participates with MDM2 in a novel autoregulatory feedback loop to regulate itself. Taken together with the findings on the effect of p53 on MEF, these data provide evidence that the p53-MDM2-MEF axis is a feedback mechanism that exquisitely controls the balance of these transcriptional regulators.
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Affiliation(s)
- Mary Ann Suico
- Department of Molecular Medicine, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto 862-0973, Japan.
| | - Ryosuke Fukuda
- Department of Molecular Medicine, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto 862-0973, Japan
| | - Rui Miyakita
- Department of Molecular Medicine, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto 862-0973, Japan
| | - Kosuke Koyama
- Department of Molecular Medicine, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto 862-0973, Japan
| | - Manabu Taura
- Department of Molecular Medicine, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto 862-0973, Japan
| | - Tsuyoshi Shuto
- Department of Molecular Medicine, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto 862-0973, Japan
| | - Hirofumi Kai
- Department of Molecular Medicine, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto 862-0973, Japan
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Abstract
Cellular quiescence is a reversible non-proliferating state. The reactivation of 'sleep-like' quiescent cells (e.g. fibroblasts, lymphocytes and stem cells) into proliferation is crucial for tissue repair and regeneration and a key to the growth, development and health of higher multicellular organisms, such as mammals. Quiescence has been a primarily phenotypic description (i.e. non-permanent cell cycle arrest) and poorly studied. However, contrary to the earlier thinking that quiescence is simply a passive and dormant state lacking proliferating activities, recent studies have revealed that cellular quiescence is actively maintained in the cell and that it corresponds to a collection of heterogeneous states. Recent modelling and experimental work have suggested that an Rb-E2F bistable switch plays a pivotal role in controlling the quiescence-proliferation balance and the heterogeneous quiescent states. Other quiescence regulatory activities may crosstalk with and impinge upon the Rb-E2F bistable switch, forming a gene network that controls the cells' quiescent states and their dynamic transitions to proliferation in response to noisy environmental signals. Elucidating the dynamic control mechanisms underlying quiescence may lead to novel therapeutic strategies that re-establish normal quiescent states, in a variety of hyper- and hypo-proliferative diseases, including cancer and ageing.
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Affiliation(s)
- Guang Yao
- Department of Molecular and Cellular Biology , University of Arizona , Tucson, AZ 85721 , USA
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42
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Ramkumar C, Kong Y, Trabucco SE, Gerstein RM, Zhang H. Smurf2 regulates hematopoietic stem cell self-renewal and aging. Aging Cell 2014; 13:478-86. [PMID: 24494704 PMCID: PMC4032599 DOI: 10.1111/acel.12195] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/11/2013] [Indexed: 12/26/2022] Open
Abstract
The age-dependent decline in the self-renewal capacity of stem cells plays a critical role in aging, but the precise mechanisms underlying this decline are not well understood. By limiting proliferative capacity, senescence is thought to play an important role in age-dependent decline of stem cell self-renewal, although direct evidence supporting this hypothesis is largely lacking. We have previously identified the E3 ubiquitin ligase Smurf2 as a critical regulator of senescence. In this study, we found that mice deficient in Smurf2 had an expanded hematopoietic stem cell (HSC) compartment in bone marrow under normal homeostatic conditions, and this expansion was associated with enhanced proliferation and reduced quiescence of HSCs. Surprisingly, increased cycling and reduced quiescence of HSCs in Smurf2-deficient mice did not lead to premature exhaustion of stem cells. Instead, HSCs in aged Smurf2-deficient mice had a significantly better repopulating capacity than aged wild-type HSCs, suggesting that decline in HSC function with age is Smurf2 dependent. Furthermore, Smurf2-deficient HSCs exhibited elevated long-term self-renewal capacity and diminished exhaustion in serial transplantation. As we found that the expression of Smurf2 was increased with age and in response to regenerative stress during serial transplantation, our findings suggest that Smurf2 plays an important role in regulating HSC self-renewal and aging.
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Affiliation(s)
- Charusheila Ramkumar
- Department of Cell and Developmental BiologyUniversity of Massachusetts Medical School Worcester MA 01655 USA
| | - Yahui Kong
- Department of Cell and Developmental BiologyUniversity of Massachusetts Medical School Worcester MA 01655 USA
| | - Sally E. Trabucco
- Department of Cell and Developmental BiologyUniversity of Massachusetts Medical School Worcester MA 01655 USA
| | - Rachel M. Gerstein
- Microbiology and Physiological Systems University of Massachusetts Medical School Worcester MA 01655USA
| | - Hong Zhang
- Department of Cell and Developmental BiologyUniversity of Massachusetts Medical School Worcester MA 01655 USA
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43
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Li X, Erden O, Li L, Ye Q, Wilson A, Du W. Binding to WGR domain by salidroside activates PARP1 and protects hematopoietic stem cells from oxidative stress. Antioxid Redox Signal 2014; 20:1853-65. [PMID: 24294904 PMCID: PMC3967359 DOI: 10.1089/ars.2013.5600] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
AIMS A component of the base excision repair pathway, poly(ADP-ribose) polymerase-1 (PARP1) functions in multiple cellular processes, including DNA repair and programmed cell death. We previously showed that Salidroside, a phenylpropanoid glycoside isolated from medicinal plants, prevented the loss of hematopoietic stem cells (HSCs) in native mice and rescued HSCs repopulating in transplanted recipients under oxidative stress. The aim of this study was to investigate the mechanism by which PARP1 activation by Salidroside maintains HSCs under oxidative stress. RESULTS We found that although there were no spontaneous defects in hematopoiesis in Parp1(-/-) mice, oxidative stress compromised the repopulating capacity of Parp1(-/-) HSCs in transplanted recipient mice. A biochemical study using truncated proteins lacking the defined functional domains of PARP1 showed that the tryptophan-glycine-arginine-rich (WGR) domain of PARP1 was critical for Salidroside binding and subsequent PARP1 activation under oxidative stress. Functionally, complementation of Parp1(-/-) HSCs with full-length PARP1WT, but not the PARP1R591K mutant in WGR domain restored Salidroside-stimulated PARP1 activation in vitro. Mechanistically, activated PARP1 by Salidroside enhanced the repopulating capacity of the stressed HSCs by accelerating oxidative DNA damage repair. INNOVATIONS AND CONCLUSION: Our findings reveal the action of mechanism for Salidroside in PARP1 stimulation and a novel role of PARP1 activation in maintaining HSC function under oxidative stress.
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Affiliation(s)
- Xue Li
- 1 Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center , Cincinnati, Ohio
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44
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Yamamoto Y, Abe A, Emi N. Clarifying the Impact of Polycomb Complex Component Disruption in Human Cancers. Mol Cancer Res 2014; 12:479-84. [DOI: 10.1158/1541-7786.mcr-13-0596] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Ariki R, Morikawa S, Mabuchi Y, Suzuki S, Nakatake M, Yoshioka K, Hidano S, Nakauchi H, Matsuzaki Y, Nakamura T, Goitsuka R. Homeodomain transcription factor Meis1 is a critical regulator of adult bone marrow hematopoiesis. PLoS One 2014; 9:e87646. [PMID: 24498346 PMCID: PMC3911998 DOI: 10.1371/journal.pone.0087646] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2013] [Accepted: 12/26/2013] [Indexed: 12/02/2022] Open
Abstract
Hematopoietic stem cells in the bone marrow have the capacity to both self-renew and to generate all cells of the hematopoietic system. The balance of these two activities is controlled by hematopoietic stem cell-intrinsic regulatory mechanisms as well as extrinsic signals from the microenvironment. Here we demonstrate that Meis1, a TALE family homeodomain transcription factor involved in numerous embryonic developmental processes, is selectively expressed in hematopoietic stem/progenitor cells. Conditional Meis1 knockout in adult hematopoietic cells resulted in a significant reduction in the hematopoietic stem/progenitor cells. Suppression of hematopoiesis by Meis1 deletion appears to be caused by impaired self-renewal activity and reduced cellular quiescence of hematopoietic stem/progenitor cells in a cell autonomous manner, resulting in stem cell exhaustion and defective long-term hematopoiesis. Meis1 deficiency down-regulated a subset of Pbx1-dependent hematopoietic stem cell signature genes, suggesting a functional link between them in the maintenance of hematopoietic stem/progenitor cells. These results show the importance of Meis1 in adult hematopoiesis.
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Affiliation(s)
- Reina Ariki
- Division of Development and Aging, Research Institute for Biomedical Sciences, Tokyo University of Science, Noda, Chiba, Japan
| | - Satoru Morikawa
- Department of Physiology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Yo Mabuchi
- Department of Physiology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Sadafumi Suzuki
- Department of Physiology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Mayuka Nakatake
- Division of Carcinogenesis, The Cancer Institute, Japanese Foundation for Cancer Research, Koto-ku, Tokyo, Japan
| | - Kentaro Yoshioka
- Division of Development and Aging, Research Institute for Biomedical Sciences, Tokyo University of Science, Noda, Chiba, Japan
| | - Shinya Hidano
- Division of Development and Aging, Research Institute for Biomedical Sciences, Tokyo University of Science, Noda, Chiba, Japan
| | - Hiromitsu Nakauchi
- Center for Stem Cell Biology and Regenerative Medicine, The Institute of Medical Science, The University of Tokyo, Minato-ku, Tokyo, Japan
| | - Yumi Matsuzaki
- Department of Physiology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Takuro Nakamura
- Division of Carcinogenesis, The Cancer Institute, Japanese Foundation for Cancer Research, Koto-ku, Tokyo, Japan
- * E-mail: (TN); (RG)
| | - Ryo Goitsuka
- Division of Development and Aging, Research Institute for Biomedical Sciences, Tokyo University of Science, Noda, Chiba, Japan
- * E-mail: (TN); (RG)
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Abstract
Lifelong production of blood cells is sustained by hematopoietic stem cells (HSC). HSC reside in a mitotically quiescent state within specialized areas of the bone marrow (BM) microenvironment known as the hematopoietic niche (HN). HSC enter into active phases of cell cycle in response to intrinsic and extrinsic biological cues thereby undergoing differentiation or self-renewal divisions. Quiescent and mitotically active HSC have different metabolic states and different functional abilities such as engraftment and BM repopulating potential following their transplantation into conditioned recipients. Recent studies reveal that various cancers also utilize the same mechanisms of quiescence as normal stem cells and preserve the root of malignancy thus contributing to relapse and metastasis. Therefore, exploring the stem cell behavior and function in conjunction with their cell cycle status has significant clinical implications in HSC transplantation and in treating cancers. In this chapter, we describe methodologies to isolate or analytically measure the frequencies of quiescent (G0) and active (G1, S, and G2-M) hematopoietic progenitor and stem cells among murine BM cells.
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Developing a Systems-Based Understanding of Hematopoietic Stem Cell Cycle Control. A SYSTEMS BIOLOGY APPROACH TO BLOOD 2014; 844:189-200. [DOI: 10.1007/978-1-4939-2095-2_9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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Lee PH, Puppi M, Schluns KS, Yu-Lee LY, Dong C, Lacorazza HD. The transcription factor E74-like factor 4 suppresses differentiation of proliferating CD4+ T cells to the Th17 lineage. THE JOURNAL OF IMMUNOLOGY 2013; 192:178-88. [PMID: 24259505 DOI: 10.4049/jimmunol.1301372] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The differentiation of CD4(+) T cells into different Th lineages is driven by cytokine milieu in the priming site and the underlying transcriptional circuitry. Even though many positive regulators have been identified, it is not clear how this process is inhibited at transcriptional level. In this study, we report that the E-twenty six (ETS) transcription factor E74-like factor 4 (ELF4) suppresses the differentiation of Th17 cells both in vitro and in vivo. Culture of naive Elf4(-/-) CD4(+) T cells in the presence of IL-6 and TGF-β (or IL-6, IL-23, and IL-1β) resulted in increased numbers of IL-17A-positive cells compared with wild-type controls. In contrast, the differentiation to Th1, Th2, or regulatory T cells was largely unaffected by loss of ELF4. The increased expression of genes involved in Th17 differentiation observed in Elf4(-/-) CD4(+) T cells suggested that ELF4 controls their programming into the Th17 lineage rather than only IL-17A gene expression. Despite normal proliferation of naive CD4(+) T cells, loss of ELF4 lowered the requirement of IL-6 and TGF-β signaling for IL-17A induction in each cell division. ELF4 did not inhibit Th17 differentiation by promoting IL-2 production as proposed for another ETS transcription factor, ETS1. Elf4(-/-) mice showed increased numbers of Th17 cells in the lamina propria at steady state, in lymph nodes after immunization, and, most importantly, in the CNS following experimental autoimmune encephalomyelitis induction, contributing to the increased disease severity. Collectively, our findings suggest that ELF4 restrains Th17 differentiation in dividing CD4(+) T cells by regulating commitment to the Th17 differentiation program.
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Affiliation(s)
- Ping-Hsien Lee
- Department of Pathology & Immunology, Baylor College of Medicine, Houston, TX 77030
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Abstract
TG-interacting factor 1 (TGIF1) is a transcriptional repressor that can modulate retinoic acid and transforming growth factor β signaling pathways. It is required for myeloid progenitor cell differentiation and survival, and mutations in the TGIF1 gene cause holoprosencephaly. Furthermore, we have previously observed that acute myelogenous leukemia (AML) patients with low TGIF1 levels had worse prognoses. Here, we explored the role of Tgif1 in murine hematopoietic stem cell (HSC) function. CFU assays showed that Tgif1(-/-) bone marrow cells produced more total colonies and had higher serial CFU potential. These effects were also observed in vivo, where Tgif1(-/-) bone marrow cells had higher repopulation potential in short- and long-term competitive repopulation assays than wild-type cells. Serial transplantation and replating studies showed that Tgif1(-/-) HSCs exhibited greater self-renewal and were less proliferative and more quiescent than wild-type cells, suggesting that Tgif1 is required for stem cells to enter the cell cycle. Furthermore, HSCs from Tgif1(+/-) mice had a phenotype similar to that of HSCs from Tgif1(-/-) mice, while bone marrow cells with overexpressing Tgif1 showed increased proliferation and lower survival in long-term transplant studies. Taken together, our data suggest that Tgif1 suppresses stem cell self-renewal and provide clues as to how reduced expression of TGIF1 may contribute to poor long-term survival in patients with AML.
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Transcriptional regulation of haematopoietic stem cells. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2013; 786:187-212. [PMID: 23696358 DOI: 10.1007/978-94-007-6621-1_11] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Haematopoietic stem cells (HSCs) are a rare cell population found in the bone marrow of adult mammals and are responsible for maintaining the entire haematopoietic system. Definitive HSCs are produced from mesoderm during embryonic development, from embryonic day 10 in the mouse. HSCs seed the foetal liver before migrating to the bone marrow around the time of birth. In the adult, HSCs are largely quiescent but have the ability to divide to self-renew and expand, or to proliferate and differentiate into any mature haematopoietic cell type. Both the specification of HSCs during development and their cellular choices once formed are tightly controlled at the level of transcription. Numerous transcriptional regulators of HSC specification, expansion, homeostasis and differentiation have been identified, primarily from analysis of mouse gene knockout experiments and transplantation assays. These include transcription factors, epigenetic modifiers and signalling pathway effectors. This chapter reviews the current knowledge of these HSC transcriptional regulators, predominantly focusing on the transcriptional regulation of mouse HSCs, although transcriptional regulation of human HSCs is also mentioned where relevant. Due to the breadth and maturity of this field, we have prioritised recently identified examples of HSC transcriptional regulators. We go on to highlight additional layers of control that regulate expression and activity of HSC transcriptional regulators and discuss how chromosomal translocations that result in fusion proteins of these HSC transcriptional regulators commonly drive leukaemias through transcriptional dysregulation.
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