1
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Nash MJ, Dobrinskikh E, Wang D, Pietras EM, Janssen RC, Friedman JE, Wesolowski SR. Isolating mononuclear cells from fetal bone and liver for metabolic, functional, and immunophenotypic analyses in nonhuman primates. STAR Protoc 2024; 5:102849. [PMID: 38324447 PMCID: PMC10859273 DOI: 10.1016/j.xpro.2024.102849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 12/18/2023] [Accepted: 01/11/2024] [Indexed: 02/09/2024] Open
Abstract
Studying fetal hematopoiesis is challenging as hematopoiesis transitions from the liver to bone marrow. Obtaining human samples is not possible, and small animal models may not provide sufficient biological material. Here, we present a protocol for isolating hematopoietic cells from the nonhuman primate fetal liver and bone. We describe steps for using cells from the same fetus for fluorescence lifetime imaging microscopy to measure metabolism, assessing cellular function, and flow cytometry for immunophenotyping at the single-cell level. For complete details on the use and execution of this protocol, please refer to Nash et al. (2023).1.
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Affiliation(s)
- Michael J Nash
- Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Evgenia Dobrinskikh
- Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Dong Wang
- Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Eric M Pietras
- Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Rachel C Janssen
- Harold Hamm Diabetes Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Jacob E Friedman
- Harold Hamm Diabetes Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA.
| | - Stephanie R Wesolowski
- Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA.
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2
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Li J, Malouf C, Miles LA, Willis MB, Pietras EM, King KY. Chronic inflammation can transform the fate of normal and mutant hematopoietic stem cells. Exp Hematol 2023; 127:8-13. [PMID: 37647982 DOI: 10.1016/j.exphem.2023.08.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 08/24/2023] [Accepted: 08/25/2023] [Indexed: 09/01/2023]
Abstract
Chronic inflammation, although subtle, puts the body in a constant state of alertness and is associated with many diseases, including cancer and cardiovascular diseases. It leads hematopoietic cells to produce and release proinflammatory cytokines, which trigger specific signaling pathways in hematopoietic stem cells (HSCs) that cause changes in proliferation, differentiation, and migration. This response is essential when HSCs are needed to produce specific blood cells to eliminate an intruder, such as a pathogenic virus, but mutant HSCs can use these proinflammatory signals to their advantage and accelerate the development of hematologic disease or malignancy. Understanding this complex process is vital for monitoring and controlling disease progression in patients. In the 2023 International Society for Experimental Hematology winter webinar, Dr. Eric Pietras (University of Colorado Anschutz Medical Campus, United States) and Dr. Katherine Y. King (Baylor College of Medicine, United States) gave a presentation on this topic, which is summarized in this review article.
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Affiliation(s)
- Jingjing Li
- Graduate School of Biomedical Engineering, University of New South Wales, Sydney, NSW, Australia.
| | | | - Linde A Miles
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH; Division of Experimental Hematology & Cancer Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH
| | - Mara B Willis
- Center for Cell and Gene Therapy and Department of Pediatrics, Division of Infectious Diseases, Baylor College of Medicine, Houston, TX
| | - Eric M Pietras
- Division of Hematology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Katherine Y King
- Center for Cell and Gene Therapy and Department of Pediatrics, Division of Infectious Diseases, Baylor College of Medicine, Houston, TX
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3
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Gurule NJ, Malcolm KC, Harris C, Knapp JR, O'Connor BP, McClendon J, Janssen WJ, Lee FFY, Price C, Osaghae-Nosa J, Wheeler EA, McMahon CM, Pietras EM, Pollyea DA, Alper S. Myelodysplastic neoplasm-associated U2AF1 mutations induce host defense defects by compromising neutrophil chemotaxis. Leukemia 2023; 37:2115-2124. [PMID: 37591942 PMCID: PMC10539173 DOI: 10.1038/s41375-023-02007-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Revised: 07/24/2023] [Accepted: 08/08/2023] [Indexed: 08/19/2023]
Abstract
Myelodysplastic neoplasm (MDS) is a hematopoietic stem cell disorder that may evolve into acute myeloid leukemia. Fatal infection is among the most common cause of death in MDS patients, likely due to myeloid cell cytopenia and dysfunction in these patients. Mutations in genes that encode components of the spliceosome represent the most common class of somatically acquired mutations in MDS patients. To determine the molecular underpinnings of the host defense defects in MDS patients, we investigated the MDS-associated spliceosome mutation U2AF1-S34F using a transgenic mouse model that expresses this mutant gene. We found that U2AF1-S34F causes a profound host defense defect in these mice, likely by inducing a significant neutrophil chemotaxis defect. Studies in human neutrophils suggest that this effect of U2AF1-S34F likely extends to MDS patients as well. RNA-seq analysis suggests that the expression of multiple genes that mediate cell migration are affected by this spliceosome mutation and therefore are likely drivers of this neutrophil dysfunction.
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Affiliation(s)
- Natalia J Gurule
- Department of Immunology and Genomic Medicine, National Jewish Health, Denver, CO, USA
- Center for Genes, Environment and Health, National Jewish Health, Denver, CO, USA
- Department of Immunology and Microbiology, University of Colorado School of Medicine, Anschutz, CO, USA
| | | | - Chelsea Harris
- Department of Immunology and Genomic Medicine, National Jewish Health, Denver, CO, USA
- Center for Genes, Environment and Health, National Jewish Health, Denver, CO, USA
| | - Jennifer R Knapp
- Center for Genes, Environment and Health, National Jewish Health, Denver, CO, USA
| | - Brian P O'Connor
- Department of Immunology and Genomic Medicine, National Jewish Health, Denver, CO, USA
- Center for Genes, Environment and Health, National Jewish Health, Denver, CO, USA
- Department of Immunology and Microbiology, University of Colorado School of Medicine, Anschutz, CO, USA
| | | | - William J Janssen
- Department of Medicine, National Jewish Health, Denver, CO, USA
- Department of Medicine, University of Colorado, Aurora, CO, USA
| | - Frank Fang Yao Lee
- Department of Immunology and Genomic Medicine, National Jewish Health, Denver, CO, USA
- Center for Genes, Environment and Health, National Jewish Health, Denver, CO, USA
- Department of Immunology and Microbiology, University of Colorado School of Medicine, Anschutz, CO, USA
| | - Caitlin Price
- Department of Medicine, University of Colorado, Aurora, CO, USA
| | - Jackson Osaghae-Nosa
- Department of Immunology and Genomic Medicine, National Jewish Health, Denver, CO, USA
- Center for Genes, Environment and Health, National Jewish Health, Denver, CO, USA
| | - Emily A Wheeler
- Department of Medicine, National Jewish Health, Denver, CO, USA
| | | | - Eric M Pietras
- Department of Medicine, University of Colorado, Aurora, CO, USA
| | | | - Scott Alper
- Department of Immunology and Genomic Medicine, National Jewish Health, Denver, CO, USA.
- Center for Genes, Environment and Health, National Jewish Health, Denver, CO, USA.
- Department of Immunology and Microbiology, University of Colorado School of Medicine, Anschutz, CO, USA.
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4
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Chavez JS, Rabe JL, Niño KE, Wells HH, Gessner RL, Mills TS, Hernandez G, Pietras EM. PU.1 is required to restrain myelopoiesis during chronic inflammatory stress. Front Cell Dev Biol 2023; 11:1204160. [PMID: 37497478 PMCID: PMC10368259 DOI: 10.3389/fcell.2023.1204160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Accepted: 06/19/2023] [Indexed: 07/28/2023] Open
Abstract
Chronic inflammation is a common feature of aging and numerous diseases such as diabetes, obesity, and autoimmune syndromes and has been linked to the development of hematological malignancy. Blood-forming hematopoietic stem cells (HSC) can contribute to these diseases via the production of tissue-damaging myeloid cells and/or the acquisition of mutations in epigenetic and transcriptional regulators that initiate evolution toward leukemogenesis. We previously showed that the myeloid "master regulator" transcription factor PU.1 is robustly induced in HSC by pro-inflammatory cytokines such as interleukin (IL)-1β and limits their proliferative activity. Here, we used a PU.1-deficient mouse model to investigate the broader role of PU.1 in regulating hematopoietic activity in response to chronic inflammatory challenges. We found that PU.1 is critical in restraining inflammatory myelopoiesis via suppression of cell cycle and self-renewal gene programs in myeloid-biased multipotent progenitor (MPP) cells. Our data show that while PU.1 functions as a key driver of myeloid differentiation, it plays an equally critical role in tailoring hematopoietic responses to inflammatory stimuli while limiting expansion and self-renewal gene expression in MPPs. These data identify PU.1 as a key regulator of "emergency" myelopoiesis relevant to inflammatory disease and leukemogenesis.
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Affiliation(s)
- James S. Chavez
- Division of Hematology, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Jennifer L. Rabe
- Division of Hematology, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Katia E. Niño
- Division of Hematology, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Harrison H. Wells
- Division of Hematology, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Rachel L. Gessner
- Division of Hematology, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Taylor S. Mills
- Division of Hematology, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
- Department of Immunology and Microbiology, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Giovanny Hernandez
- Division of Hematology, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Eric M. Pietras
- Division of Hematology, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
- Department of Immunology and Microbiology, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
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5
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Nash MJ, Dobrinskikh E, Soderborg TK, Janssen RC, Takahashi DL, Dean TA, Varlamov O, Hennebold JD, Gannon M, Aagaard KM, McCurdy CE, Kievit P, Bergman BC, Jones KL, Pietras EM, Wesolowski SR, Friedman JE. Maternal diet alters long-term innate immune cell memory in fetal and juvenile hematopoietic stem and progenitor cells in nonhuman primate offspring. Cell Rep 2023; 42:112393. [PMID: 37058409 PMCID: PMC10570400 DOI: 10.1016/j.celrep.2023.112393] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 01/30/2023] [Accepted: 03/30/2023] [Indexed: 04/15/2023] Open
Abstract
Maternal overnutrition increases inflammatory and metabolic disease risk in postnatal offspring. This constitutes a major public health concern due to increasing prevalence of these diseases, yet mechanisms remain unclear. Here, using nonhuman primate models, we show that maternal Western-style diet (mWSD) exposure is associated with persistent pro-inflammatory phenotypes at the transcriptional, metabolic, and functional levels in bone marrow-derived macrophages (BMDMs) from 3-year-old juvenile offspring and in hematopoietic stem and progenitor cells (HSPCs) from fetal and juvenile bone marrow and fetal liver. mWSD exposure is also associated with increased oleic acid in fetal and juvenile bone marrow and fetal liver. Assay for transposase-accessible chromatin with sequencing (ATAC-seq) profiling of HSPCs and BMDMs from mWSD-exposed juveniles supports a model in which HSPCs transmit pro-inflammatory memory to myeloid cells beginning in utero. These findings show that maternal diet alters long-term immune cell developmental programming in HSPCs with proposed consequences for chronic diseases featuring altered immune/inflammatory activation across the lifespan.
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Affiliation(s)
- Michael J Nash
- Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Evgenia Dobrinskikh
- Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Taylor K Soderborg
- Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Rachel C Janssen
- Harold Hamm Diabetes Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Diana L Takahashi
- Division of Cardiometabolic Health, Oregon National Primate Research Center, Oregon Health & Science University, Beaverton, OR 97006, USA
| | - Tyler A Dean
- Division of Cardiometabolic Health, Oregon National Primate Research Center, Oregon Health & Science University, Beaverton, OR 97006, USA
| | - Oleg Varlamov
- Division of Cardiometabolic Health, Oregon National Primate Research Center, Oregon Health & Science University, Beaverton, OR 97006, USA
| | - Jon D Hennebold
- Division of Reproductive and Developmental Sciences, Oregon National Primate Research Center, Oregon Health & Science University, Beaverton, OR 97006, USA
| | - Maureen Gannon
- Department of Medicine, Division of Diabetes, Endocrinology, and Metabolism, Vanderbilt University Medical Center, Nashville, TN 37235, USA
| | - Kjersti M Aagaard
- Department of Obstetrics and Gynecology, Division of Maternal-Fetal Medicine, Baylor College of Medicine, Houston, TX 77030, USA
| | - Carrie E McCurdy
- Department of Human Physiology, University of Oregon, Eugene, OR 97403, USA
| | - Paul Kievit
- Division of Cardiometabolic Health, Oregon National Primate Research Center, Oregon Health & Science University, Beaverton, OR 97006, USA
| | - Bryan C Bergman
- Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Kenneth L Jones
- Department of Physiology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Eric M Pietras
- Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Stephanie R Wesolowski
- Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Jacob E Friedman
- Harold Hamm Diabetes Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; Department of Physiology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA.
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6
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Pietras EM. Young bugs rejuvenate old blood. Blood 2023; 141:1650-1652. [PMID: 37022735 DOI: 10.1182/blood.2023019638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023] Open
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7
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Alkhani A, Korsholm C, Levy CS, Mohamedaly S, Duwaerts CC, Pietras EM, Nijagal A. Neonatal Hepatic Myeloid Progenitors Expand and Propagate Liver Injury in Mice. J Clin Med 2023; 12:jcm12010337. [PMID: 36615137 PMCID: PMC9821039 DOI: 10.3390/jcm12010337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 12/24/2022] [Accepted: 12/28/2022] [Indexed: 01/03/2023] Open
Abstract
BACKGROUND Biliary atresia (BA) is a progressive pediatric inflammatory disease of the liver that leads to cirrhosis and necessitates liver transplantation. The rapid progression from liver injury to liver failure in children with BA suggests that factors specific to the perinatal hepatic environment are important for disease propagation. Hematopoietic stem and progenitor cells (HSPCs) reside in the fetal liver and are known to serve as central hubs of inflammation. We hypothesized that HSPCs are critical for the propagation of perinatal liver injury (PLI). METHODS Newborn BALB/c mice were injected with rhesus rotavirus (RRV) to induce PLI or with PBS as control. Livers were compared using histology and flow cytometry. To determine the effects of HSPCs on PLI, RRV-infected neonatal mice were administered anti-CD47 and anti-CD117 to deplete HSPCs. RESULTS PLI significantly increased the number of common myeloid progenitors and the number of CD34+ hematopoietic progenitors. Elimination of HSPCs through antibody-mediated myeloablation rescued animals from PLI and significantly increased survival (RRV+isotype control 36.4% vs. RRV+myeloablation 77.8%, Chi-test = 0.003). CONCLUSIONS HSPCs expand as a result of RRV infection and propagate PLI. Targeting of HSPCs may be useful in preventing and treating neonatal inflammatory diseases of the liver such as BA.
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Affiliation(s)
- Anas Alkhani
- Department of Surgery, University of California, San Francisco, CA 94143, USA
- The Liver Center, University of California, San Francisco, CA 94143, USA
| | - Cathrine Korsholm
- Department of Surgery, University of California, San Francisco, CA 94143, USA
- The Liver Center, University of California, San Francisco, CA 94143, USA
- Department of Comparative Pediatrics and Nutrition, University of Copenhagen, 1870 Frederiksberg C, Denmark
| | - Claire S. Levy
- Department of Surgery, University of California, San Francisco, CA 94143, USA
- The Liver Center, University of California, San Francisco, CA 94143, USA
| | - Sarah Mohamedaly
- Department of Surgery, University of California, San Francisco, CA 94143, USA
- The Liver Center, University of California, San Francisco, CA 94143, USA
| | - Caroline C. Duwaerts
- The Liver Center, University of California, San Francisco, CA 94143, USA
- Department of Medicine, University of California, San Francisco, CA 94143, USA
| | - Eric M. Pietras
- Division of Hematology, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Amar Nijagal
- Department of Surgery, University of California, San Francisco, CA 94143, USA
- The Liver Center, University of California, San Francisco, CA 94143, USA
- The Pediatric Liver Center, UCSF Benioff Childrens’ Hospital, San Francisco, CA 94143, USA
- Eli and Edythe Broad Center of Regeneration Medicine, University of California, San Francisco, CA 94143, USA
- Correspondence: ; Tel.: +1-415-476-4086
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8
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Mitchell CA, Verovskaya EV, Calero-Nieto FJ, Olson OC, Swann JW, Wang X, Hérault A, Dellorusso PV, Zhang SY, Svendsen AF, Pietras EM, Bakker ST, Ho TT, Göttgens B, Passegué E. Stromal niche inflammation mediated by IL-1 signalling is a targetable driver of haematopoietic ageing. Nat Cell Biol 2023; 25:30-41. [PMID: 36650381 PMCID: PMC7614279 DOI: 10.1038/s41556-022-01053-0] [Citation(s) in RCA: 26] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 11/15/2022] [Indexed: 01/19/2023]
Abstract
Haematopoietic ageing is marked by a loss of regenerative capacity and skewed differentiation from haematopoietic stem cells (HSCs), leading to impaired blood production. Signals from the bone marrow niche tailor blood production, but the contribution of the old niche to haematopoietic ageing remains unclear. Here we characterize the inflammatory milieu that drives both niche and haematopoietic remodelling. We find decreased numbers and functionality of osteoprogenitors at the endosteum and expansion of central marrow LepR+ mesenchymal stromal cells associated with deterioration of the sinusoidal vasculature. Together, they create a degraded and inflamed old bone marrow niche. Niche inflammation in turn drives the chronic activation of emergency myelopoiesis pathways in old HSCs and multipotent progenitors, which promotes myeloid differentiation and hinders haematopoietic regeneration. Moreover, we show how production of interleukin-1β (IL-1β) by the damaged endosteum acts in trans to drive the proinflammatory nature of the central marrow, with damaging consequences for the old blood system. Notably, niche deterioration, HSC dysfunction and defective regeneration can all be ameliorated by blocking IL-1 signalling. Our results demonstrate that targeting IL-1 as a key mediator of niche inflammation is a tractable strategy to improve blood production during ageing.
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Affiliation(s)
- Carl A Mitchell
- Columbia Stem Cell Initiative, Department of Genetics and Development, Columbia University Irving Medical Center, New York, NY, USA
| | - Evgenia V Verovskaya
- Columbia Stem Cell Initiative, Department of Genetics and Development, Columbia University Irving Medical Center, New York, NY, USA
- The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, Department of Medicine, Division Hematology/Oncology, University of California San Francisco, San Francisco, CA, USA
| | - Fernando J Calero-Nieto
- Wellcome and MRC Cambridge Stem Cell Institute, Department of Haematology, Jeffrey Cheah Biomedical Centre, Cambridge University, Cambridge, UK
| | - Oakley C Olson
- Columbia Stem Cell Initiative, Department of Genetics and Development, Columbia University Irving Medical Center, New York, NY, USA
| | - James W Swann
- Columbia Stem Cell Initiative, Department of Genetics and Development, Columbia University Irving Medical Center, New York, NY, USA
| | - Xiaonan Wang
- Wellcome and MRC Cambridge Stem Cell Institute, Department of Haematology, Jeffrey Cheah Biomedical Centre, Cambridge University, Cambridge, UK
| | - Aurélie Hérault
- The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, Department of Medicine, Division Hematology/Oncology, University of California San Francisco, San Francisco, CA, USA
| | - Paul V Dellorusso
- Columbia Stem Cell Initiative, Department of Genetics and Development, Columbia University Irving Medical Center, New York, NY, USA
| | - Si Yi Zhang
- The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, Department of Medicine, Division Hematology/Oncology, University of California San Francisco, San Francisco, CA, USA
| | - Arthur Flohr Svendsen
- The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, Department of Medicine, Division Hematology/Oncology, University of California San Francisco, San Francisco, CA, USA
| | - Eric M Pietras
- The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, Department of Medicine, Division Hematology/Oncology, University of California San Francisco, San Francisco, CA, USA
| | - Sietske T Bakker
- The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, Department of Medicine, Division Hematology/Oncology, University of California San Francisco, San Francisco, CA, USA
| | - Theodore T Ho
- The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, Department of Medicine, Division Hematology/Oncology, University of California San Francisco, San Francisco, CA, USA
| | - Berthold Göttgens
- Wellcome and MRC Cambridge Stem Cell Institute, Department of Haematology, Jeffrey Cheah Biomedical Centre, Cambridge University, Cambridge, UK
| | - Emmanuelle Passegué
- Columbia Stem Cell Initiative, Department of Genetics and Development, Columbia University Irving Medical Center, New York, NY, USA.
- The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, Department of Medicine, Division Hematology/Oncology, University of California San Francisco, San Francisco, CA, USA.
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9
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Sureshchandra S, Chan CN, Robino JJ, Parmelee LK, Nash MJ, Wesolowski SR, Pietras EM, Friedman JE, Takahashi D, Shen W, Jiang X, Hennebold JD, Goldman D, Packwood W, Lindner JR, Roberts CT, Burwitz BJ, Messaoudi I, Varlamov O. Maternal Western-style diet remodels the transcriptional landscape of fetal hematopoietic stem and progenitor cells in rhesus macaques. Stem Cell Reports 2022; 17:2595-2609. [PMID: 36332628 PMCID: PMC9768582 DOI: 10.1016/j.stemcr.2022.10.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 10/04/2022] [Accepted: 10/05/2022] [Indexed: 11/06/2022] Open
Abstract
Maternal obesity adversely impacts the in utero metabolic environment, but its effect on fetal hematopoiesis remains incompletely understood. During late development, the fetal bone marrow (FBM) becomes the major site where macrophages and B lymphocytes are produced via differentiation of hematopoietic stem and progenitor cells (HSPCs). Here, we analyzed the transcriptional landscape of FBM HSPCs at single-cell resolution in fetal macaques exposed to a maternal high-fat Western-style diet (WSD) or a low-fat control diet. We demonstrate that maternal WSD induces a proinflammatory response in FBM HSPCs and fetal macrophages. In addition, maternal WSD consumption suppresses the expression of B cell development genes and decreases the frequency of FBM B cells. Finally, maternal WSD leads to poor engraftment of fetal HSPCs in nonlethally irradiated immunodeficient NOD/SCID/IL2rγ-/- mice. Collectively, these data demonstrate for the first time that maternal WSD impairs fetal HSPC differentiation and function in a translationally relevant nonhuman primate model.
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Affiliation(s)
- Suhas Sureshchandra
- Department of Molecular Biology and Biochemistry, School of Biological Sciences, Institute for Immunology, Center for Virus Research, University of California-Irvine, Irvine, CA 92697, USA
| | - Chi N Chan
- Division of Comparative Medicine, Oregon National Primate Research Center, Beaverton, OR 97006
| | - Jacob J Robino
- Division of Cardiometabolic Health, Oregon National Primate Research Center, Beaverton, OR 97006
| | - Lindsay K Parmelee
- Division of Comparative Medicine, Oregon National Primate Research Center, Beaverton, OR 97006
| | - Michael J Nash
- Department of Pediatrics, Section of Neonatology, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Stephanie R Wesolowski
- Department of Pediatrics, Section of Neonatology, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Eric M Pietras
- Department of Immunology and Microbiology, Division of Hematology, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Jacob E Friedman
- Department of Pediatrics, Section of Neonatology, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA; Harold Hamm Diabetes Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Diana Takahashi
- Division of Comparative Medicine, Oregon National Primate Research Center, Beaverton, OR 97006
| | - Weining Shen
- Department of Statistics, University of California-Irvine, Irvine, CA 92697, USA
| | - Xiwen Jiang
- Department of Statistics, University of California-Irvine, Irvine, CA 92697, USA
| | - Jon D Hennebold
- Division of Reproductive and Developmental Sciences, Oregon National Primate Research Center, Beaverton, OR 97006; Department of Obstetrics and Gynecology, Oregon Health & Science University, Portland, OR 97239, USA
| | - Devorah Goldman
- Stem Cell Center, Oregon Health & Science University, Portland, OR 97239, USA
| | - William Packwood
- Knight Cardiovascular Institute, Oregon Health & Science University, Portland, OR 97239, USA
| | - Jonathan R Lindner
- Division of Cardiometabolic Health, Oregon National Primate Research Center, Beaverton, OR 97006; Knight Cardiovascular Institute, Oregon Health & Science University, Portland, OR 97239, USA
| | - Charles T Roberts
- Division of Cardiometabolic Health, Oregon National Primate Research Center, Beaverton, OR 97006; Department of Pediatrics, Oregon Health & Science University, Portland, OR 97239, USA
| | - Benjamin J Burwitz
- Division of Pathobiology and Immunology, Oregon National Primate Research Center, Beaverton, OR 97006; Vaccine & Gene Therapy Institute, Beaverton, OR 97006, USA
| | - Ilhem Messaoudi
- Department of Molecular Biology and Biochemistry, School of Biological Sciences, Institute for Immunology, Center for Virus Research, University of California-Irvine, Irvine, CA 92697, USA; Department of Immunology, Microbiology and Molecular Genetics, University of Kentucky College of Medicine, Lexington, KY 40506, USA
| | - Oleg Varlamov
- Division of Cardiometabolic Health, Oregon National Primate Research Center, Beaverton, OR 97006.
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10
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Niño KE, Pietras EM. TNF Receptors Choose HSC Fate in Supporting Dnmt3a-Mutant Clonal Hematopoiesis. Cancer Discov 2022; 12:2724-2726. [PMID: 36458433 DOI: 10.1158/2159-8290.cd-22-1022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Abstract
SUMMARY TNFα receptor signaling distinctly promotes self-renewal and lymphoid differentiation in Dnmt3a-mutant hematopoietic stem cells, contributing to clonal hematopoiesis of indeterminate potential. See related article by SanMiguel et al., p. 2763 (3).
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Affiliation(s)
- Katia E Niño
- Division of Hematology, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Eric M Pietras
- Division of Hematology, University of Colorado Anschutz Medical Campus, Aurora, Colorado.,Department of Microbiology and Immunology, University of Colorado Anschutz Medical Campus, Aurora, Colorado
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11
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Pietras EM, DeGregori J. Dangerous Liaisons between Tet2 Mutation, Inflammatory Monocytes, and Leukemogenesis. Cancer Discov 2022; 12:2234-2236. [PMID: 36196576 DOI: 10.1158/2159-8290.cd-22-0846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Transgenic knockin mice expressing a common loss-of-function mutation in human TET2 exhibit aging-related accelerated myeloid leukemia development and skewing of myelopoiesis toward the production of proinflammatory MHC-IIhi monocytes that may contribute to disease. See related article by Yeaton et al., p. 2392 (2).
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Affiliation(s)
- Eric M Pietras
- Department of Medicine, Section of Hematology, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - James DeGregori
- Department of Medicine, Section of Hematology, University of Colorado Anschutz Medical Campus, Aurora, Colorado.,Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus, Aurora, Colorado
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12
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Schleicher WE, Pietras EM. Reduced PU.1 Expression Collaborates with Tet2 Loss to Trigger Myeloid Leukemogenesis. Blood Cancer Discov 2022; 3:378-381. [PMID: 36065607 PMCID: PMC9445751 DOI: 10.1158/2643-3230.bcd-22-0100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The leukemic transformation of hematopoietic stem and progenitor cells in the setting of Tet2 deficiency is driven by PU.1 gene network loss through complementary reduction in PU.1 expression and hypermethylation of ETS loci at the enhancers of PU.1 target genes. See related article by Aivalioti et al., p. 444 (6).
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Affiliation(s)
- Wolfgang E. Schleicher
- Division of Hematology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Eric M. Pietras
- Division of Hematology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado
- Department of Microbiology and Immunology, University of Colorado Anschutz Medical Campus, Aurora, Colorado
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13
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Zhou C, Uluisik R, Rowley JW, David C, Jones CL, Scharer CD, Noetzli L, Fisher MH, Kirkpatrick GD, Bark K, Boss JM, Henry CJ, Pietras EM, Di Paola J, Porter CC. Germline ETV6 mutation promotes inflammation and disrupts lymphoid development of early hematopoietic progenitors. Exp Hematol 2022; 112-113:24-34. [PMID: 35803545 PMCID: PMC9885892 DOI: 10.1016/j.exphem.2022.06.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Revised: 06/10/2022] [Accepted: 06/26/2022] [Indexed: 02/01/2023]
Abstract
Germline mutations in ETV6 are associated with a syndrome of thrombocytopenia and leukemia predisposition, and ETV6 is among the most commonly mutated genes in leukemias, especially childhood B-cell acute lymphoblastic leukemia. However, the mechanisms underlying disease caused by ETV6 dysfunction are poorly understood. To address these gaps in knowledge, using CRISPR/Cas9, we developed a mouse model of the most common recurrent, disease-causing germline mutation in ETV6. We found defects in hematopoiesis related primarily to abnormalities of the multipotent progenitor population 4 (MPP4) subset of hematopoietic progenitor cells and evidence of sterile inflammation. Expression of ETV6 in Ba/F3 cells altered the expression of several cytokines, some of which were also detected at higher levels in the bone marrow of the mice with Etv6 mutation. Among these, interleukin-18 and interleukin-13 abrogated B-cell development of sorted MPP4 cells, but not common lymphoid progenitors, suggesting that inflammation contributes to abnormal hematopoiesis by impairing lymphoid development. These data, along with those from humans, support a model in which ETV6 dysfunction promotes inflammation, which adversely affects thrombopoiesis and promotes leukemogenesis.
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Affiliation(s)
- Chengjing Zhou
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA
| | - Rizvan Uluisik
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA
| | - Jesse W Rowley
- Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, UT
| | - Camille David
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA
| | | | - Christopher D Scharer
- Department of Microbiology & Immunology, Emory University School of Medicine, Atlanta, GA
| | | | - Marlie H Fisher
- Medical Scientist Training Program, University of Colorado School of Medicine, Aurora, CO
| | | | - Katrina Bark
- Department of Pediatrics, Washington University School of Medicine, St. Louis, MO
| | - Jeremy M Boss
- Department of Microbiology & Immunology, Emory University School of Medicine, Atlanta, GA
| | - Curtis J Henry
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA
| | - Eric M Pietras
- Department of Medicine, University of Colorado School of Medicine, Aurora, CO
| | - Jorge Di Paola
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA
| | - Christopher C Porter
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA; Aflac Cancer & Blood Disorders Center, Children's Healthcare of Atlanta, Atlanta, GA.
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14
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Abstract
Clonal hematopoiesis of indeterminate potential (CHIP) describes a widespread expansion of genetically variant hematopoietic cells that increases exponentially with age and is associated with increased risks of cancers, cardiovascular disease, and other maladies. Here, we discuss how environmental contexts associated with CHIP, such as old age, infections, chemotherapy, or cigarette smoking, alter tissue microenvironments to facilitate the selection and expansion of specific CHIP mutant clones. Further, we consider major remaining gaps in knowledge, including intrinsic effects, clone size thresholds, and factors affecting clonal competition, that will determine future application of this field in transplant and preventive medicine.
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Affiliation(s)
- Marcus A Florez
- Medical Scientist Training Program and Program in Translational Biology and Molecular Medicine, Graduate School of Biomedical Sciences, Baylor College of Medicine, 1102 Bates Street, Suite 1150, Houston, TX 77030, USA; Division of Infectious Disease, Department of Pediatrics, Baylor College of Medicine, 1102 Bates Street, Suite 1150, Houston, TX 77030, USA
| | - Brandon T Tran
- Graduate School of Biomedical Sciences, Program in Cancer and Cell Biology, Baylor College of Medicine, 1102 Bates Street, Suite 1150, Houston, TX 77030, USA; Division of Infectious Disease, Department of Pediatrics, Baylor College of Medicine, 1102 Bates Street, Suite 1150, Houston, TX 77030, USA
| | - Trisha K Wathan
- Division of Infectious Disease, Department of Pediatrics, Baylor College of Medicine, 1102 Bates Street, Suite 1150, Houston, TX 77030, USA
| | - James DeGregori
- Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus, Aurora, CO, USA; Division of Hematology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, USA; Department of Microbiology and Immunology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Eric M Pietras
- Division of Hematology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, USA; Department of Microbiology and Immunology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Katherine Y King
- Medical Scientist Training Program and Program in Translational Biology and Molecular Medicine, Graduate School of Biomedical Sciences, Baylor College of Medicine, 1102 Bates Street, Suite 1150, Houston, TX 77030, USA; Graduate School of Biomedical Sciences, Program in Cancer and Cell Biology, Baylor College of Medicine, 1102 Bates Street, Suite 1150, Houston, TX 77030, USA; Division of Infectious Disease, Department of Pediatrics, Baylor College of Medicine, 1102 Bates Street, Suite 1150, Houston, TX 77030, USA; Stem Cells and Regenerative Medicine Center, Baylor College of Medicine, 1102 Bates Street, Suite 1150, Houston, TX 77030, USA.
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15
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Bailey O, Garcia-Perez JE, Baxter RM, Cabrera-Martinez B, Lui VG, Fernandez IZ, Foster MJ, Gessner R, Gapin L, Pietras EM, Kedl R, Hsieh E. Dissecting the effect of a novel hypomorphic IL2RB mutation on immune dysregulation. The Journal of Immunology 2022. [DOI: 10.4049/jimmunol.208.supp.159.08] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Abstract
Human inborn errors of immunity (IEIs) are a class of genetic disorders caused by monogenic germline mutations that impair the function of the encoded protein. We recently described a novel IEI due to an IL2RB homozygous mutation (p.Pro222_Gln225Del) in two siblings who suffered from multi-organ autoimmunity and CMV susceptibility. This mutation resulted in decreased cell surface protein expression and increased serum IL-2/15 levels, with concomitant increased baseline STAT5 phosphorylation (pSTAT5) but poor pSTAT5 response to IL-2 and IL-15 stimulation. Counterintuitively, this IL-2Rβ hypomorphic mutation led to an expansion of memory CD8+ T and immature CD56bright NK cells, which express the highest levels of IL-2Rβ and require IL-2/15 signaling for survival and differentiation. Yet, their maturation and function appeared impaired, suggesting that both intrinsic (hypomorphic receptor) and extrinsic (serum cytokine milieu) mechanisms were at play. To further interrogate these receptor instrinsic/extrinsic mechanisms we developed a mouse model that harbors the homolog mutation (Il2rbMut/Mut). When mutant bone marrow cells reconstituted a WT host, serum IL-2/15 levels and IL-2Rβ protein surface expression partially normalized, though IL-2/15-induced signaling remained hypofunctional. Additionally, the dysregulated mutant IL-2Rβ-driven CD8+ T cell immunophenotype normalized but the NK phenotype did not. These data highlight the asymmetrical effect that a partial IL-2Rβ defect has on CD8 T and NK cell IL-2/15-dependent signaling and downstream cellular processes. These results imply that strategies to modify serum IL-2/15 levels may serve as a therapeutic approach to treating IL-2/15 signaling defects.
Supported by grants from NIH (T32 AI074491, K23 AR070897)
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Affiliation(s)
- Olivia Bailey
- 1Immunology and Microbiology, University of Colorado Anschutz Medical Campus
| | | | - Ryan M Baxter
- 1Immunology and Microbiology, University of Colorado Anschutz Medical Campus
| | | | - Victor G Lui
- 1Immunology and Microbiology, University of Colorado Anschutz Medical Campus
| | - Isabel Z Fernandez
- 1Immunology and Microbiology, University of Colorado Anschutz Medical Campus
| | - Mary J Foster
- 1Immunology and Microbiology, University of Colorado Anschutz Medical Campus
| | - Rachel Gessner
- 3Hematology, University of Colorado Anschutz Medical Campus
| | - Laurent Gapin
- 1Immunology and Microbiology, University of Colorado Anschutz Medical Campus
| | - Eric M Pietras
- 3Hematology, University of Colorado Anschutz Medical Campus
| | - Ross Kedl
- 1Immunology and Microbiology, University of Colorado Anschutz Medical Campus
| | - Elena Hsieh
- 1Immunology and Microbiology, University of Colorado Anschutz Medical Campus
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16
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Patel SB, Pietras EM. B cells regulate hematopoietic stem cells via cholinergic signaling. Nat Immunol 2022; 23:476-478. [PMID: 35347284 DOI: 10.1038/s41590-022-01172-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Sweta B Patel
- Division of Hematology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Eric M Pietras
- Division of Hematology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, USA.
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17
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Chavez JS, Rabe JL, Hernandez G, Mills TS, Niño KE, Davizon-Castillo P, Pietras EM. PU.1 Expression Defines Distinct Functional Activities in the Phenotypic HSC Compartment of a Murine Inflammatory Stress Model. Cells 2022; 11:cells11040680. [PMID: 35203330 PMCID: PMC8870714 DOI: 10.3390/cells11040680] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 02/05/2022] [Accepted: 02/10/2022] [Indexed: 12/17/2022] Open
Abstract
The transcription factor PU.1 is a critical regulator of lineage fate in blood-forming hematopoietic stem cells (HSC). In response to pro-inflammatory signals, such as the cytokine IL-1β, PU.1 expression is increased in HSC and is associated with myeloid lineage expansion. To address potential functional heterogeneities arising in the phenotypic HSC compartment due to changes in PU.1 expression, here, we fractionated phenotypic HSC in mice using the SLAM surface marker code in conjunction with PU.1 expression levels, using the PU.1-EYFP reporter mouse strain. While PU.1lo SLAM cells contain extensive long-term repopulating activity and a molecular signature corresponding to HSC activity at steady state, following IL-1β treatment, HSCLT induce PU.1 expression and are replaced in the PU.1lo SLAM fraction by CD41+ HSC-like megakaryocytic progenitors (SL-MkP) with limited long-term engraftment capacity. On the other hand, the PU.1hi SLAM fraction exhibits extensive myeloid lineage priming and clonogenic activity and expands rapidly in response to IL-1β. Furthermore, we show that EPCR expression, but not CD150 expression, can distinguish HSCLT and SL-MkP under inflammatory conditions. Altogether, our data provide insights into the dynamic regulation of PU.1 and identify how PU.1 levels are linked to HSC fate in steady state and inflammatory stress conditions.
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Affiliation(s)
- James S. Chavez
- Division of Hematology, Anschutz Medical Campus, University of Colorado, Aurora, CO 80045, USA; (J.S.C.); (J.L.R.); (G.H.); (T.S.M.); (K.E.N.)
| | - Jennifer L. Rabe
- Division of Hematology, Anschutz Medical Campus, University of Colorado, Aurora, CO 80045, USA; (J.S.C.); (J.L.R.); (G.H.); (T.S.M.); (K.E.N.)
| | - Giovanny Hernandez
- Division of Hematology, Anschutz Medical Campus, University of Colorado, Aurora, CO 80045, USA; (J.S.C.); (J.L.R.); (G.H.); (T.S.M.); (K.E.N.)
| | - Taylor S. Mills
- Division of Hematology, Anschutz Medical Campus, University of Colorado, Aurora, CO 80045, USA; (J.S.C.); (J.L.R.); (G.H.); (T.S.M.); (K.E.N.)
| | - Katia E. Niño
- Division of Hematology, Anschutz Medical Campus, University of Colorado, Aurora, CO 80045, USA; (J.S.C.); (J.L.R.); (G.H.); (T.S.M.); (K.E.N.)
| | - Pavel Davizon-Castillo
- Department of Pediatrics, Anschutz Medical Campus, University of Colorado, Aurora, CO 80045, USA;
| | - Eric M. Pietras
- Division of Hematology, Anschutz Medical Campus, University of Colorado, Aurora, CO 80045, USA; (J.S.C.); (J.L.R.); (G.H.); (T.S.M.); (K.E.N.)
- Department of Immunology and Microbiology, Anschutz Medical Campus, University of Colorado, Aurora, CO 80045, USA
- Correspondence:
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18
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Ahmed N, Etzrodt M, Dettinger P, Kull T, Loeffler D, Hoppe PS, Chavez JS, Zhang Y, Camargo Ortega G, Hilsenbeck O, Nakajima H, Pietras EM, Schroeder T. Blood stem cell PU.1 upregulation is a consequence of differentiation without fast autoregulation. J Exp Med 2022; 219:e20202490. [PMID: 34817548 PMCID: PMC8624737 DOI: 10.1084/jem.20202490] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 05/07/2021] [Accepted: 09/23/2021] [Indexed: 11/12/2022] Open
Abstract
Transcription factors (TFs) regulate cell fates, and their expression must be tightly regulated. Autoregulation is assumed to regulate many TFs' own expression to control cell fates. Here, we manipulate and quantify the (auto)regulation of PU.1, a TF controlling hematopoietic stem and progenitor cells (HSPCs), and correlate it to their future fates. We generate transgenic mice allowing both inducible activation of PU.1 and noninvasive quantification of endogenous PU.1 protein expression. The quantified HSPC PU.1 dynamics show that PU.1 up-regulation occurs as a consequence of hematopoietic differentiation independently of direct fast autoregulation. In contrast, inflammatory signaling induces fast PU.1 up-regulation, which does not require PU.1 expression or its binding to its own autoregulatory enhancer. However, the increased PU.1 levels induced by inflammatory signaling cannot be sustained via autoregulation after removal of the signaling stimulus. We conclude that PU.1 overexpression induces HSC differentiation before PU.1 up-regulation, only later generating cell types with intrinsically higher PU.1.
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Affiliation(s)
- Nouraiz Ahmed
- Department of Biosystems Science & Engineering, Eidgenössische Technische Hochschule Zürich, Basel, Switzerland
| | - Martin Etzrodt
- Department of Biosystems Science & Engineering, Eidgenössische Technische Hochschule Zürich, Basel, Switzerland
| | - Philip Dettinger
- Department of Biosystems Science & Engineering, Eidgenössische Technische Hochschule Zürich, Basel, Switzerland
| | - Tobias Kull
- Department of Biosystems Science & Engineering, Eidgenössische Technische Hochschule Zürich, Basel, Switzerland
| | - Dirk Loeffler
- Department of Biosystems Science & Engineering, Eidgenössische Technische Hochschule Zürich, Basel, Switzerland
| | - Philipp S. Hoppe
- Department of Biosystems Science & Engineering, Eidgenössische Technische Hochschule Zürich, Basel, Switzerland
| | - James S. Chavez
- Division of Hematology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Yang Zhang
- Department of Biosystems Science & Engineering, Eidgenössische Technische Hochschule Zürich, Basel, Switzerland
| | - Germán Camargo Ortega
- Department of Biosystems Science & Engineering, Eidgenössische Technische Hochschule Zürich, Basel, Switzerland
| | - Oliver Hilsenbeck
- Department of Biosystems Science & Engineering, Eidgenössische Technische Hochschule Zürich, Basel, Switzerland
| | - Hideaki Nakajima
- Department of Stem Cell and Immune Regulation, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Eric M. Pietras
- Division of Hematology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Timm Schroeder
- Department of Biosystems Science & Engineering, Eidgenössische Technische Hochschule Zürich, Basel, Switzerland
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19
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Challen GA, Pietras EM, Wallscheid NC, Signer RAJ. Simplified murine multipotent progenitor isolation scheme: Establishing a consensus approach for multipotent progenitor identification. Exp Hematol 2021; 104:55-63. [PMID: 34648848 DOI: 10.1016/j.exphem.2021.09.007] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 09/29/2021] [Accepted: 09/30/2021] [Indexed: 11/18/2022]
Abstract
The mouse hematopoietic system has served as a paradigm for analysis of developmental fate decisions in tissue homeostasis and regeneration. However, multiple immunophenotypic definitions of, and sometimes divergent nomenclatures used to classify, murine multipotent progenitors (MPPs) have emerged in the field over time. This has created significant confusion and inconsistency in the hematology field. To facilitate easier comparison of murine MPP phenotypes between research laboratories, a working group of four International Society for Experimental Hematology (ISEH) members with extensive experience studying the functional activities associated with different MPP phenotypic definitions reviewed the current state of the field with the goal of developing a position statement toward a simplified and unified immunophenotypic definition of MPP populations. In November of 2020, this position statement was presented as a webinar to the ISEH community for discussion and feedback. Hence, the Simplified MPP Identification Scheme presented here is the result of curation of existing literature, consultation with leaders in the field, and crowdsourcing from the wider experimental hematology community. Adoption of a unified definition and nomenclature, while still leaving room for individual investigator customization, will benefit scientists at all levels trying to compare these populations between experimental settings.
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Affiliation(s)
- Grant A Challen
- Division of Oncology, Department of Medicine, Washington University School of Medicine, St. Louis, MO
| | - Eric M Pietras
- Division of Hematology, Department of Medicine, Department of Microbiology and Immunology, University of Colorado Anschutz Medical Campus, Aurora, CO
| | | | - Robert A J Signer
- Division of Regenerative Medicine, Department of Medicine, Moores Cancer Center, University of California, San Diego, La Jolla, CA
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20
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Majumdar D, Pietras EM, Pawar SA. Analysis of Radiation-Induced Changes in Cell Cycle and DNA Damage of Murine Hematopoietic Stem Cells by Multi-Color Flow Cytometry. Curr Protoc 2021; 1:e216. [PMID: 34399037 PMCID: PMC9990863 DOI: 10.1002/cpz1.216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Exposure of bone marrow to genotoxic stress such as ionizing radiation (IR) results in a rapid decline of peripheral blood cells and stimulates entry of the normally quiescent hematopoietic stem cells (HSCs) into the cell cycle to reconstitute the hematopoietic system. While several protocols have employed flow cytometry analysis of bone marrow cells to study changes in specific cell populations with respect to cell cycle proliferation and/or expression of γ-H2AX, a marker of DNA damage, these parameters were examined in separate panels. Here, we describe a flow cytometry-based method specifically designed to examine cell cycle distribution using Ki-67 and FXCycle violet in combination with γ-H2AX in HSCs and hematopoietic progenitor cells (HPCs) within the same sample. This method is very useful, particularly in studies involving genotoxic stresses such as IR, which substantially reduce the absolute numbers of HSCs and HPCs available for staining. Additionally, we describe several important considerations for the analysis of markers of HSCs in irradiated versus unirradiated samples. Examples include the use of fluorescence minus one (FMO) controls, the gating strategy for markers whose expression is typically impacted by IR such as Sca1, tips for staining of intracellular antigens like Ki67, and ensuring the detection of signal from at least 500 events in each gate to ensure robustness of the results. © 2021 Wiley Periodicals LLC. Basic Protocol: Immunostaining protocol for bone marrow mononuclear cells using a multi-fluorophore panel.
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Affiliation(s)
- Debajyoti Majumdar
- Division of Radiation Health, Department of Pharmaceutical Sciences, College of Pharmacy, University of Arkansas for Medical Sciences, Little Rock, Arkansas
| | - Eric M. Pietras
- Division of Hematology, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Snehalata A. Pawar
- Division of Radiation Health, Department of Pharmaceutical Sciences, College of Pharmacy, University of Arkansas for Medical Sciences, Little Rock, Arkansas
- Department of Radiation Oncology, College of Medicine, SUNY–Upstate Medical University, Syracuse, New York
- Corresponding author:
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21
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Caiado F, Pietras EM, Manz MG. Inflammation as a regulator of hematopoietic stem cell function in disease, aging, and clonal selection. J Exp Med 2021; 218:212381. [PMID: 34129016 PMCID: PMC8210622 DOI: 10.1084/jem.20201541] [Citation(s) in RCA: 85] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 05/19/2021] [Accepted: 05/19/2021] [Indexed: 12/17/2022] Open
Abstract
Inflammation is an evolutionarily selected defense response to infection or tissue damage that involves activation and consumption of immune cells in order to reestablish and maintain organismal integrity. In this process, hematopoietic stem cells (HSCs) are themselves exposed to inflammatory cues and via proliferation and differentiation, replace mature immune cells in a demand-adapted fashion. Here, we review how major sources of systemic inflammation act on and subsequently shape HSC fate and function. We highlight how lifelong inflammatory exposure contributes to HSC inflamm-aging and selection of premalignant HSC clones. Finally, we explore emerging areas of interest and open questions remaining in the field.
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Affiliation(s)
- Francisco Caiado
- Department of Medical Oncology and Hematology, University Hospital Zürich, Zürich, Switzerland.,University of Zürich, Comprehensive Cancer Center Zürich, Zürich, Switzerland
| | - Eric M Pietras
- Division of Hematology, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Markus G Manz
- Department of Medical Oncology and Hematology, University Hospital Zürich, Zürich, Switzerland.,University of Zürich, Comprehensive Cancer Center Zürich, Zürich, Switzerland
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22
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Higa KC, Goodspeed A, Chavez JS, De Dominici M, Danis E, Zaberezhnyy V, Rabe JL, Tenen DG, Pietras EM, DeGregori J. Chronic interleukin-1 exposure triggers selection for Cebpa-knockout multipotent hematopoietic progenitors. J Exp Med 2021; 218:212039. [PMID: 33914855 PMCID: PMC8094119 DOI: 10.1084/jem.20200560] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 02/11/2021] [Accepted: 03/24/2021] [Indexed: 12/14/2022] Open
Abstract
The early events that drive myeloid oncogenesis are not well understood. Most studies focus on the cell-intrinsic genetic changes and how they impact cell fate decisions. We consider how chronic exposure to the proinflammatory cytokine, interleukin-1β (IL-1β), impacts Cebpa-knockout hematopoietic stem and progenitor cells (HSPCs) in competitive settings. Surprisingly, we found that Cebpa loss did not confer a hematopoietic cell–intrinsic competitive advantage; rather chronic IL-1β exposure engendered potent selection for Cebpa loss. Chronic IL-1β augments myeloid lineage output by activating differentiation and repressing stem cell gene expression programs in a Cebpa-dependent manner. As a result, Cebpa-knockout HSPCs are resistant to the prodifferentiative effects of chronic IL-1β, and competitively expand. We further show that ectopic CEBPA expression reduces the fitness of established human acute myeloid leukemias, coinciding with increased differentiation. These findings have important implications for the earliest events that drive hematologic disorders, suggesting that chronic inflammation could be an important driver of leukemogenesis and a potential target for intervention.
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Affiliation(s)
- Kelly C Higa
- Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus, Aurora, CO.,Integrated Department of Immunology, University of Colorado Anschutz Medical Campus, Aurora, CO.,Medical Scientist Training Program, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Andrew Goodspeed
- Department of Pharmacology, University of Colorado Anschutz Medical Campus, Aurora, CO.,University of Colorado Comprehensive Cancer Center, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - James S Chavez
- Division of Hematology, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Marco De Dominici
- Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Etienne Danis
- Department of Pharmacology, University of Colorado Anschutz Medical Campus, Aurora, CO.,University of Colorado Comprehensive Cancer Center, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Vadym Zaberezhnyy
- Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Jennifer L Rabe
- Division of Hematology, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Daniel G Tenen
- Cancer Science Institute, National University of Singapore, Singapore.,Harvard Stem Cell Institute, Harvard Medical School, Boston, MA
| | - Eric M Pietras
- Integrated Department of Immunology, University of Colorado Anschutz Medical Campus, Aurora, CO.,University of Colorado Comprehensive Cancer Center, University of Colorado Anschutz Medical Campus, Aurora, CO.,Division of Hematology, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - James DeGregori
- Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus, Aurora, CO.,Integrated Department of Immunology, University of Colorado Anschutz Medical Campus, Aurora, CO.,University of Colorado Comprehensive Cancer Center, University of Colorado Anschutz Medical Campus, Aurora, CO.,Division of Hematology, University of Colorado Anschutz Medical Campus, Aurora, CO
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23
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Chavez JS, Rabe JL, Loeffler D, Higa KC, Hernandez G, Mills TS, Ahmed N, Gessner RL, Ke Z, Idler BM, Niño KE, Kim H, Myers JR, Stevens BM, Davizon-Castillo P, Jordan CT, Nakajima H, Ashton J, Welner RS, Schroeder T, DeGregori J, Pietras EM. PU.1 enforces quiescence and limits hematopoietic stem cell expansion during inflammatory stress. J Exp Med 2021; 218:211996. [PMID: 33857288 PMCID: PMC8056754 DOI: 10.1084/jem.20201169] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 02/01/2021] [Accepted: 03/17/2021] [Indexed: 12/27/2022] Open
Abstract
Hematopoietic stem cells (HSCs) are capable of entering the cell cycle to replenish the blood system in response to inflammatory cues; however, excessive proliferation in response to chronic inflammation can lead to either HSC attrition or expansion. The mechanism(s) that limit HSC proliferation and expansion triggered by inflammatory signals are poorly defined. Here, we show that long-term HSCs (HSCLT) rapidly repress protein synthesis and cell cycle genes following treatment with the proinflammatory cytokine interleukin (IL)-1. This gene program is associated with activation of the transcription factor PU.1 and direct PU.1 binding at repressed target genes. Notably, PU.1 is required to repress cell cycle and protein synthesis genes, and IL-1 exposure triggers aberrant protein synthesis and cell cycle activity in PU.1-deficient HSCs. These features are associated with expansion of phenotypic PU.1-deficient HSCs. Thus, we identify a PU.1-dependent mechanism triggered by innate immune stimulation that limits HSC proliferation and pool size. These findings provide insight into how HSCs maintain homeostasis during inflammatory stress.
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Affiliation(s)
- James S Chavez
- Division of Hematology, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Jennifer L Rabe
- Division of Hematology, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Dirk Loeffler
- Department of Biosystems Science and Engineering, Eidgenössische Technische Hochschule Zurich, Basel, Switzerland
| | - Kelly C Higa
- Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Giovanny Hernandez
- Division of Hematology, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Taylor S Mills
- Division of Hematology, University of Colorado Anschutz Medical Campus, Aurora, CO.,Department of Immunology and Microbiology, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Nouraiz Ahmed
- Department of Biosystems Science and Engineering, Eidgenössische Technische Hochschule Zurich, Basel, Switzerland
| | - Rachel L Gessner
- Division of Hematology, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Zhonghe Ke
- Division of Hematology, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Beau M Idler
- Division of Hematology, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Katia E Niño
- Division of Hematology, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Hyunmin Kim
- Division of Medical Oncology, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Jason R Myers
- Genomics Research Center, University of Rochester, Rochester, NY
| | - Brett M Stevens
- Division of Hematology, University of Colorado Anschutz Medical Campus, Aurora, CO
| | | | - Craig T Jordan
- Division of Hematology, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Hideaki Nakajima
- Department of Stem Cell and Immune Regulation, Yokohama City University School of Medicine, Yokohama, Japan
| | - John Ashton
- Genomics Research Center, University of Rochester, Rochester, NY
| | - Robert S Welner
- Division of Hematology, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL
| | - Timm Schroeder
- Department of Biosystems Science and Engineering, Eidgenössische Technische Hochschule Zurich, Basel, Switzerland
| | - James DeGregori
- Division of Hematology, University of Colorado Anschutz Medical Campus, Aurora, CO.,Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus, Aurora, CO.,Department of Immunology and Microbiology, University of Colorado Anschutz Medical Campus, Aurora, CO.,Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Eric M Pietras
- Division of Hematology, University of Colorado Anschutz Medical Campus, Aurora, CO.,Department of Immunology and Microbiology, University of Colorado Anschutz Medical Campus, Aurora, CO
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24
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Cavalli G, Tengesdal IW, Gresnigt M, Nemkov T, Arts RJW, Domínguez-Andrés J, Molteni R, Stefanoni D, Cantoni E, Cassina L, Giugliano S, Schraa K, Mills TS, Pietras EM, Eisenmensser EZ, Dagna L, Boletta A, D'Alessandro A, Joosten LAB, Netea MG, Dinarello CA. The anti-inflammatory cytokine interleukin-37 is an inhibitor of trained immunity. Cell Rep 2021; 35:108955. [PMID: 33826894 DOI: 10.1016/j.celrep.2021.108955] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Revised: 09/08/2020] [Accepted: 03/17/2021] [Indexed: 02/07/2023] Open
Abstract
Trained immunity (TI) is a de facto innate immune memory program induced in monocytes/macrophages by exposure to pathogens or vaccines, which evolved as protection against infections. TI is characterized by immunometabolic changes and histone post-translational modifications, which enhance production of pro-inflammatory cytokines. As aberrant activation of TI is implicated in inflammatory diseases, tight regulation is critical; however, the mechanisms responsible for this modulation remain elusive. Interleukin-37 (IL-37) is an anti-inflammatory cytokine that curbs inflammation and modulates metabolic pathways. In this study, we show that administration of recombinant IL-37 abrogates the protective effects of TI in vivo, as revealed by reduced host pro-inflammatory responses and survival to disseminated candidiasis. Mechanistically, IL-37 reverses the immunometabolic changes and histone post-translational modifications characteristic of TI in monocytes, thus suppressing cytokine production in response to infection. IL-37 thereby emerges as an inhibitor of TI and as a potential therapeutic target in immune-mediated pathologies.
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Affiliation(s)
- Giulio Cavalli
- Department of Medicine, Radboud University Medical Center, Nijmegen, the Netherlands; Department of Medicine, University of Colorado Denver, Aurora, CO 80045, USA; Division of Genetics and Cell Biology, IRCCS San Raffaele Scientific Institute, Milan, Italy; Vita-Salute San Raffaele University, Milan, Italy
| | - Isak W Tengesdal
- Department of Medicine, Radboud University Medical Center, Nijmegen, the Netherlands; Department of Medicine, University of Colorado Denver, Aurora, CO 80045, USA
| | - Mark Gresnigt
- Department of Medicine, Radboud University Medical Center, Nijmegen, the Netherlands; Department of Medicine, University of Colorado Denver, Aurora, CO 80045, USA; Department of Microbial Pathogenicity Mechanisms, Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute, Jena, Germany
| | - Travis Nemkov
- Department of Biochemistry and Molecular Genetics, University of Colorado Denver, Aurora, CO 80045, USA
| | - Rob J W Arts
- Department of Medicine, Radboud University Medical Center, Nijmegen, the Netherlands
| | | | - Raffaella Molteni
- Division of Genetics and Cell Biology, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | | | | | - Laura Cassina
- Division of Genetics and Cell Biology, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Silvia Giugliano
- Laboratory of Mucosal Immunology and Microbiota, Humanitas Clinical and Research Center - IRCCS, via Manzoni 56, 20089 Rozzano (MI), Italy
| | - Kiki Schraa
- Department of Medicine, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Taylor S Mills
- Division of Hematology, Department of Medicine, University of Colorado Denver, Aurora, CO 80045, USA
| | - Eric M Pietras
- Division of Hematology, Department of Medicine, University of Colorado Denver, Aurora, CO 80045, USA
| | - Elan Z Eisenmensser
- Department of Biochemistry and Molecular Genetics, University of Colorado Denver, Aurora, CO 80045, USA
| | - Lorenzo Dagna
- Vita-Salute San Raffaele University, Milan, Italy; Unit of Immunology, Rheumatology, Allergy and Rare Diseases, IRCCS San Raffaele Hospital, Milan, Italy
| | - Alessandra Boletta
- Division of Genetics and Cell Biology, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Angelo D'Alessandro
- Department of Biochemistry and Molecular Genetics, University of Colorado Denver, Aurora, CO 80045, USA
| | - Leo A B Joosten
- Department of Medicine, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Mihai G Netea
- Department of Medicine, Radboud University Medical Center, Nijmegen, the Netherlands; Department of Immunology and Metabolism, Life and Medical Sciences Institute, University of Bonn, Bonn, Germany
| | - Charles A Dinarello
- Department of Medicine, Radboud University Medical Center, Nijmegen, the Netherlands; Department of Medicine, University of Colorado Denver, Aurora, CO 80045, USA.
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25
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Culp-Hill R, D'Alessandro A, Pietras EM. Extinguishing the Embers: Targeting AML Metabolism. Trends Mol Med 2021; 27:332-344. [PMID: 33121874 PMCID: PMC8005405 DOI: 10.1016/j.molmed.2020.10.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 09/29/2020] [Accepted: 10/01/2020] [Indexed: 02/07/2023]
Abstract
Acute myeloid leukemia (AML) is a cancer derived from the myeloid lineage of blood cells, characterized by overproduction of leukemic blasts. Although therapeutic improvements have made a significant impact on the outcomes of patients with AML, survival rates remain low due to a high incidence of relapse. Similar to how wildfires can reignite from hidden embers not extinguished from an initial round of firefighting, leukemic stem cells (LSCs) are the embers remaining after completion of traditional chemotherapeutic treatments. LSCs exhibit a unique metabolic profile and contain metabolically distinct subpopulations. In this review, we detail the metabolic features of LSCs and how thetse characteristics promote resistance to traditional chemotherapy. We also discuss new therapeutic approaches that target metabolic vulnerabilities of LSC to selectively eradicate them.
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Affiliation(s)
- Rachel Culp-Hill
- Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Angelo D'Alessandro
- Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA; Division of Hematology, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Eric M Pietras
- Division of Hematology, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA; Department of Immunology & Microbiology, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA.
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26
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Pollyea DA, Kim HM, Stevens BM, Lee FFY, Harris C, Hedin BR, Knapp JR, O'Connor BP, Jordan CT, Pietras EM, Tan AC, Alper S. MDS-associated SF3B1 mutations enhance proinflammatory gene expression in patient blast cells. J Leukoc Biol 2020; 110:197-205. [PMID: 33155727 DOI: 10.1002/jlb.6ab0520-318rr] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 10/20/2020] [Accepted: 10/21/2020] [Indexed: 12/29/2022] Open
Abstract
Two factors known to contribute to the development of myelodysplastic syndrome (MDS) and other blood cancers are (i) somatically acquired mutations in components of the spliceosome and (ii) increased inflammation. Spliceosome genes, including SF3B1, are mutated at high frequency in MDS and other blood cancers; these mutations are thought to be neomorphic or gain-of-function mutations that drive disease pathogenesis. Likewise, increased inflammation is thought to contribute to MDS pathogenesis; inflammatory cytokines are strongly elevated in these patients, with higher levels correlating with worsened patient outcome. In the current study, we used RNAseq to analyze pre-mRNA splicing and gene expression changes present in blast cells isolated from MDS patients with or without SF3B1 mutations. We determined that SF3B1 mutations lead to enhanced proinflammatory gene expression in these cells. Thus, these studies suggest that SF3B1 mutations could contribute to MDS pathogenesis by enhancing the proinflammatory milieu in these patients.
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Affiliation(s)
- Daniel A Pollyea
- Division of Hematology, Department of Medicine, University of Colorado School of Medicine, Aurora, Colorado, USA
| | - Hyun Min Kim
- Division of Medical Oncology, Department of Medicine, University of Colorado School of Medicine, Aurora, Colorado, USA
| | - Brett M Stevens
- Division of Hematology, Department of Medicine, University of Colorado School of Medicine, Aurora, Colorado, USA
| | - Frank Fang-Yao Lee
- Department of Immunology and Genomic Medicine, National Jewish Health, Denver, Colorado, USA.,Center for Genes, Environment and Health, National Jewish Health, Denver, Colorado, USA
| | - Chelsea Harris
- Department of Immunology and Genomic Medicine, National Jewish Health, Denver, Colorado, USA.,Center for Genes, Environment and Health, National Jewish Health, Denver, Colorado, USA
| | - Brenna R Hedin
- Department of Immunology and Genomic Medicine, National Jewish Health, Denver, Colorado, USA.,Center for Genes, Environment and Health, National Jewish Health, Denver, Colorado, USA
| | - Jennifer R Knapp
- Center for Genes, Environment and Health, National Jewish Health, Denver, Colorado, USA
| | - Brian P O'Connor
- Department of Immunology and Genomic Medicine, National Jewish Health, Denver, Colorado, USA.,Center for Genes, Environment and Health, National Jewish Health, Denver, Colorado, USA.,Department of Immunology and Microbiology, University of Colorado School of Medicine, Aurora, Colorado, USA
| | - Craig T Jordan
- Division of Hematology, Department of Medicine, University of Colorado School of Medicine, Aurora, Colorado, USA
| | - Eric M Pietras
- Division of Hematology, Department of Medicine, University of Colorado School of Medicine, Aurora, Colorado, USA
| | - Aik Choon Tan
- Division of Medical Oncology, Department of Medicine, University of Colorado School of Medicine, Aurora, Colorado, USA.,Department of Biostatistics and Bioinformatics, Moffitt Cancer Center, Tampa, Florida, USA
| | - Scott Alper
- Department of Immunology and Genomic Medicine, National Jewish Health, Denver, Colorado, USA.,Center for Genes, Environment and Health, National Jewish Health, Denver, Colorado, USA.,Department of Immunology and Microbiology, University of Colorado School of Medicine, Aurora, Colorado, USA
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27
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Kang YA, Pietras EM, Passegué E. Deregulated Notch and Wnt signaling activates early-stage myeloid regeneration pathways in leukemia. J Exp Med 2020; 217:133549. [PMID: 31886826 PMCID: PMC7062512 DOI: 10.1084/jem.20190787] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Revised: 09/23/2019] [Accepted: 11/19/2019] [Indexed: 11/04/2022] Open
Abstract
Targeting commonly altered mechanisms in leukemia can provide additional treatment options. Here, we show that an inducible pathway of myeloid regeneration involving the remodeling of the multipotent progenitor (MPP) compartment downstream of hematopoietic stem cells (HSCs) is commonly hijacked in myeloid malignancies. We establish that differential regulation of Notch and Wnt signaling transiently triggers myeloid regeneration from HSCs in response to stress, and that constitutive low Notch and high Wnt activity in leukemic stem cells (LSCs) maintains this pathway activated in malignancies. We also identify compensatory crosstalk mechanisms between Notch and Wnt signaling that prevent damaging HSC function, MPP production, and blood output in conditions of high Notch and low Wnt activity. Finally, we demonstrate that restoring Notch and Wnt deregulated activity in LSCs attenuates disease progression. Our results uncover a mechanism that controls myeloid regeneration and early lineage decisions in HSCs and could be targeted in LSCs to normalize leukemic myeloid cell production.
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Affiliation(s)
- Yoon-A Kang
- Columbia Stem Cell Initiative, Department of Genetics and Development, Columbia University, New York, NY.,Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, Department of Medicine, Hematology/Oncology Division, University of California San Francisco, San Francisco, CA
| | - Eric M Pietras
- Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, Department of Medicine, Hematology/Oncology Division, University of California San Francisco, San Francisco, CA
| | - Emmanuelle Passegué
- Columbia Stem Cell Initiative, Department of Genetics and Development, Columbia University, New York, NY.,Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, Department of Medicine, Hematology/Oncology Division, University of California San Francisco, San Francisco, CA
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28
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Fisher MH, Kirkpatrick GD, Stevens B, Jones C, Callaghan M, Rajpurkar M, Fulbright J, Cooper MA, Rowley J, Porter CC, Gutierrez-Hartmann A, Jones K, Jordan C, Pietras EM, Di Paola J. ETV6 germline mutations cause HDAC3/NCOR2 mislocalization and upregulation of interferon response genes. JCI Insight 2020; 5:140332. [PMID: 32841218 PMCID: PMC7526537 DOI: 10.1172/jci.insight.140332] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Accepted: 08/19/2020] [Indexed: 12/11/2022] Open
Abstract
ETV6 is an ETS family transcription factor that plays a key role in hematopoiesis and megakaryocyte development. Our group and others have identified germline mutations in ETV6 resulting in autosomal dominant thrombocytopenia and predisposition to malignancy; however, molecular mechanisms defining the role of ETV6 in megakaryocyte development have not been well established. Using a combination of molecular, biochemical, and sequencing approaches in patient-derived PBMCs, we demonstrate abnormal cytoplasmic localization of ETV6 and the HDAC3/NCOR2 repressor complex that led to overexpression of HDAC3-regulated interferon response genes. This transcriptional dysregulation was also reflected in patient-derived platelet transcripts and drove aberrant proplatelet formation in megakaryocytes. Our results suggest that aberrant transcription may predispose patients with ETV6 mutations to bone marrow inflammation, dysplasia, and megakaryocyte dysfunction.
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Affiliation(s)
- Marlie H. Fisher
- Molecular Biology Graduate Program
- Medical Scientist Training Program, and
- Division of Hematology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Gregory D. Kirkpatrick
- Medical Scientist Training Program, and
- Division of Hematology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Brett Stevens
- Division of Hematology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Courtney Jones
- Division of Hematology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Michael Callaghan
- Department of Pediatrics, Children’s Hospital of Michigan, Wayne State University, Detroit, Michigan, USA
| | - Madhvi Rajpurkar
- Department of Pediatrics, Children’s Hospital of Michigan, Wayne State University, Detroit, Michigan, USA
| | - Joy Fulbright
- Department of Pediatrics, Children’s Mercy Hospital, Kansas City, Missouri, USA
| | - Megan A. Cooper
- Department of Pediatrics, Washington University at St. Louis, St. Louis, Missouri, USA
| | - Jesse Rowley
- Department of Internal Medicine, University of Utah, Salt Lake City, Utah, USA
| | - Christopher C. Porter
- Department of Pediatrics, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Arthur Gutierrez-Hartmann
- Molecular Biology Graduate Program
- Department of Internal Medicine and
- Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Kenneth Jones
- Department of Cell Biology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, USA
| | - Craig Jordan
- Division of Hematology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Eric M. Pietras
- Division of Hematology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Jorge Di Paola
- Department of Pediatrics, Washington University at St. Louis, St. Louis, Missouri, USA
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29
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Wang Y, Sano S, Yura Y, Ke Z, Sano M, Oshima K, Ogawa H, Horitani K, Min KD, Miura-Yura E, Kour A, Evans MA, Zuriaga MA, Hirschi KK, Fuster JJ, Pietras EM, Walsh K. Tet2-mediated clonal hematopoiesis in nonconditioned mice accelerates age-associated cardiac dysfunction. JCI Insight 2020; 5:135204. [PMID: 32154790 PMCID: PMC7213793 DOI: 10.1172/jci.insight.135204] [Citation(s) in RCA: 89] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Accepted: 02/26/2020] [Indexed: 12/17/2022] Open
Abstract
Clonal hematopoiesis of indeterminate potential is prevalent in elderly individuals and associated with increased risks of all-cause mortality and cardiovascular disease. However, mouse models to study the dynamics of clonal hematopoiesis and its consequences on the cardiovascular system under homeostatic conditions are lacking. We developed a model of clonal hematopoiesis using adoptive transfer of unfractionated ten-eleven translocation 2-mutant (Tet2-mutant) bone marrow cells into nonirradiated mice. Consistent with age-related clonal hematopoiesis observed in humans, these mice displayed a progressive expansion of Tet2-deficient cells in multiple hematopoietic stem and progenitor cell fractions and blood cell lineages. The expansion of the Tet2-mutant fraction was also observed in bone marrow-derived CCR2+ myeloid cell populations within the heart, but there was a negligible impact on the yolk sac-derived CCR2- cardiac-resident macrophage population. Transcriptome profiling revealed an enhanced inflammatory signature in the donor-derived macrophages isolated from the heart. Mice receiving Tet2-deficient bone marrow cells spontaneously developed age-related cardiac dysfunction characterized by greater hypertrophy and fibrosis. Altogether, we show that Tet2-mediated hematopoiesis contributes to cardiac dysfunction in a nonconditioned setting that faithfully models human clonal hematopoiesis in unperturbed bone marrow. Our data support clinical findings that clonal hematopoiesis per se may contribute to diminished health span.
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Affiliation(s)
- Ying Wang
- Hematovascular Biology Center, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, Virginia, USA
- Department of Cardiology, Xinqiao Hospital, Army Medical University, Chongqing, China
| | - Soichi Sano
- Hematovascular Biology Center, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, Virginia, USA
| | - Yoshimitsu Yura
- Hematovascular Biology Center, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, Virginia, USA
| | - Zhonghe Ke
- Division of Hematology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Miho Sano
- Hematovascular Biology Center, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, Virginia, USA
| | - Kosei Oshima
- Molecular Cardiology/Whitaker Cardiovascular Institute, Boston University School of Medicine, Boston, Massachusetts, USA
| | - Hayato Ogawa
- Hematovascular Biology Center, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, Virginia, USA
| | - Keita Horitani
- Hematovascular Biology Center, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, Virginia, USA
| | - Kyung-Duk Min
- Hematovascular Biology Center, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, Virginia, USA
| | - Emiri Miura-Yura
- Hematovascular Biology Center, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, Virginia, USA
| | - Anupreet Kour
- Hematovascular Biology Center, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, Virginia, USA
| | - Megan A. Evans
- Hematovascular Biology Center, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, Virginia, USA
| | - Maria A. Zuriaga
- Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
| | - Karen K. Hirschi
- Hematovascular Biology Center, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, Virginia, USA
| | - Jose J. Fuster
- Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
| | - Eric M. Pietras
- Division of Hematology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Kenneth Walsh
- Hematovascular Biology Center, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, Virginia, USA
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30
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Rabe JL, Hernandez G, Chavez JS, Mills TS, Nerlov C, Pietras EM. CD34 and EPCR coordinately enrich functional murine hematopoietic stem cells under normal and inflammatory conditions. Exp Hematol 2019; 81:1-15.e6. [PMID: 31863798 DOI: 10.1016/j.exphem.2019.12.003] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 12/03/2019] [Accepted: 12/15/2019] [Indexed: 02/06/2023]
Abstract
Hematopoiesis is dynamically regulated to maintain blood system function under nonhomeostatic conditions such as inflammation and injury. However, common surface marker and hematopoietic stem cell (HSC) reporter systems used for prospective enrichment of HSCs have been less rigorously tested in these contexts. Here, we use two surface markers, EPCR/CD201 and CD34, to re-analyze dynamic changes in the HSC-enriched phenotypic SLAM compartment in a mouse model of chronic interleukin (IL)-1 exposure. EPCR and CD34 coordinately identify four functionally and molecularly distinct compartments within the SLAM fraction, including an EPCR+/CD34- fraction whose long-term serial repopulating activity is only modestly impacted by chronic IL-1 exposure, relative to unfractionated SLAM cells. Notably, the other three fractions expand in frequency following IL-1 treatment and represent actively proliferating, lineage-primed cell states with limited long-term repopulating potential. Importantly, we find that the Fgd5-ZSGreen HSC reporter mouse enriches for molecularly and functionally intact HSCs regardless of IL-1 exposure. Together, our findings provide further evidence of dynamic heterogeneity within a commonly used HSC-enriched phenotypic compartment under stress conditions. Importantly, they also indicate that stringency of prospective isolation approaches can enhance interpretation of findings related to HSC function when studying models of hematopoietic stress.
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Affiliation(s)
- Jennifer L Rabe
- Division of Hematology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Giovanny Hernandez
- Division of Hematology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - James S Chavez
- Division of Hematology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Taylor S Mills
- Division of Hematology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Claus Nerlov
- MRC Molecular Hematology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, United Kingdom
| | - Eric M Pietras
- Division of Hematology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA; Department of Immunology & Microbiology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA.
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31
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Abstract
Hematopoietic stem cell function is closely tied to circadian rhythms. In this issue of Cell Stem Cell, Golan et al. (2018) identify crosstalk between circadian hormone signals, the inflammatory cytokine TNF, and bone marrow macrophages as a key regulator of HSC proliferation, differentiation, and self-renewal in the bone marrow.
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Affiliation(s)
- James S Chavez
- Division of Hematology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Eric M Pietras
- Division of Hematology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA; Department of Immunology & Microbiology, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA.
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Hemmati S, Sinclair T, Tong M, Bartholdy B, Okabe RO, Ames K, Ostrodka L, Haque T, Kaur I, Mills TS, Agarwal A, Pietras EM, Zhao JJ, Roberts TM, Gritsman K. PI3 kinase alpha and delta promote hematopoietic stem cell activation. JCI Insight 2019; 5:125832. [PMID: 31120863 DOI: 10.1172/jci.insight.125832] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Many cytokines and chemokines that are important for hematopoiesis activate the PI3K signaling pathway. Because this pathway is frequently mutated and activated in cancer, PI3K inhibitors have been developed for the treatment of several malignancies, and are now being tested in the clinic in combination with chemotherapy. However, the role of PI3K in adult hematopoietic stem cells (HSCs), particularly during hematopoietic stress, is still unclear. We previously showed that the individual PI3K catalytic isoforms P110α or P110β have dispensable roles in HSC function, suggesting redundancy between PI3K isoforms in HSCs. We now demonstrate that simultaneous deletion of P110α and P110δ in double knockout (DKO) HSCs uncovers their redundant requirement in HSC cycling after 5-fluorouracil (5-FU) chemotherapy administration. In contrast, DKO HSCs are still able to exit quiescence in response to other stress stimuli, such as LPS. We found that DKO HSCs and progenitors have impaired sensing of inflammatory signals ex vivo, and that levels of IL1-β and MIG are higher in the bone marrow after LPS than after 5-FU administration. Furthermore, exogenous in vivo administration of IL1-β can induce cell cycle entry of DKO HSCs. Our findings have important clinical implications for the use of PI3K inhibitors in combination with chemotherapy.
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Affiliation(s)
- Shayda Hemmati
- Department of Medicine and.,Department of Cell Biology, Albert Einstein College of Medicine, New York, New York, USA
| | - Taneisha Sinclair
- Department of Medicine and.,Department of Cell Biology, Albert Einstein College of Medicine, New York, New York, USA
| | - Meng Tong
- Department of Medicine and.,Department of Cell Biology, Albert Einstein College of Medicine, New York, New York, USA
| | - Boris Bartholdy
- Department of Cell Biology, Albert Einstein College of Medicine, New York, New York, USA
| | - Rachel O Okabe
- Department of Medicine and.,Department of Cell Biology, Albert Einstein College of Medicine, New York, New York, USA
| | - Kristina Ames
- Department of Medicine and.,Department of Cell Biology, Albert Einstein College of Medicine, New York, New York, USA
| | - Leanne Ostrodka
- Department of Medicine and.,Department of Cell Biology, Albert Einstein College of Medicine, New York, New York, USA
| | - Tamanna Haque
- Department of Cell Biology, Albert Einstein College of Medicine, New York, New York, USA.,Department of Medical Oncology, Montefiore Hospital, New York, New York, USA
| | - Imit Kaur
- Department of Medicine and.,Department of Cell Biology, Albert Einstein College of Medicine, New York, New York, USA
| | - Taylor S Mills
- Division of Hematology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Anupriya Agarwal
- Knight Cancer Institute, Oregon Health Sciences University, Portland, Oregon, USA
| | - Eric M Pietras
- Division of Hematology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Jean J Zhao
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, Massachusetts, USA
| | - Thomas M Roberts
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, Massachusetts, USA
| | - Kira Gritsman
- Department of Medicine and.,Department of Cell Biology, Albert Einstein College of Medicine, New York, New York, USA.,Department of Medical Oncology, Montefiore Hospital, New York, New York, USA
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Hernandez G, Mills TS, Rabe JL, Chavez JS, Kuldanek S, Kirkpatrick G, Noetzli L, Jubair WK, Zanche M, Myers JR, Stevens BM, Fleenor CJ, Adane B, Dinarello CA, Ashton J, Jordan CT, Di Paola J, Hagman JR, Holers VM, Kuhn KA, Pietras EM. Pro-inflammatory cytokine blockade attenuates myeloid expansion in a murine model of rheumatoid arthritis. Haematologica 2019; 105:585-597. [PMID: 31101752 PMCID: PMC7049366 DOI: 10.3324/haematol.2018.197210] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2018] [Accepted: 04/17/2019] [Indexed: 12/16/2022] Open
Abstract
Rheumatoid arthritis (RA) is a debilitating autoimmune disease characterized by chronic inflammation and progressive destruction of joint tissue. It is also characterized by aberrant blood phenotypes including anemia and suppressed lymphopoiesis that contribute to morbidity in RA patients. However, the impact of RA on hematopoietic stem cells (HSC) has not been fully elucidated. Using a collagen-induced mouse model of human RA, we identified systemic inflammation and myeloid overproduction associated with activation of a myeloid differentiation gene program in HSC. Surprisingly, despite ongoing inflammation, HSC from arthritic mice remain in a quiescent state associated with activation of a proliferation arrest gene program. Strikingly, we found that inflammatory cytokine blockade using the interleukin-1 receptor antagonist anakinra led to an attenuation of inflammatory arthritis and myeloid expansion in the bone marrow of arthritic mice. In addition, anakinra reduced expression of inflammation-driven myeloid lineage and proliferation arrest gene programs in HSC of arthritic mice. Altogether, our findings show that inflammatory cytokine blockade can contribute to normalization of hematopoiesis in the context of chronic autoimmune arthritis.
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Affiliation(s)
- Giovanny Hernandez
- Division of Hematology, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Taylor S Mills
- Division of Hematology, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Jennifer L Rabe
- Division of Hematology, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - James S Chavez
- Division of Hematology, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Susan Kuldanek
- Division of Hematology, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Gregory Kirkpatrick
- Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Leila Noetzli
- Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Widian K Jubair
- Division of Rheumatology, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Michelle Zanche
- Genomics Research Center, University of Rochester, Rochester, NY
| | - Jason R Myers
- Genomics Research Center, University of Rochester, Rochester, NY
| | - Brett M Stevens
- Division of Hematology, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Courtney J Fleenor
- Department of Biomedical Research, National Jewish Health, Denver, CO.,Department of Immunology & Microbiology, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Biniam Adane
- Division of Hematology, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Charles A Dinarello
- Division of Infectious Disease, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - John Ashton
- Genomics Research Center, University of Rochester, Rochester, NY
| | - Craig T Jordan
- Division of Hematology, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Jorge Di Paola
- Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - James R Hagman
- Department of Biomedical Research, National Jewish Health, Denver, CO.,Department of Immunology & Microbiology, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - V Michael Holers
- Division of Rheumatology, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Kristine A Kuhn
- Division of Rheumatology, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Eric M Pietras
- Division of Hematology, University of Colorado Anschutz Medical Campus, Aurora, CO .,Department of Immunology & Microbiology, University of Colorado Anschutz Medical Campus, Aurora, CO
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Pollyea DA, Harris C, Rabe JL, Hedin BR, De Arras L, Katz S, Wheeler E, Bejar R, Walter MJ, Jordan CT, Pietras EM, Alper S. Myelodysplastic syndrome-associated spliceosome gene mutations enhance innate immune signaling. Haematologica 2019; 104:e388-e392. [PMID: 30846499 DOI: 10.3324/haematol.2018.214155] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Affiliation(s)
- Daniel A Pollyea
- Division of Hematology, Department of Medicine, University of Colorado School of Medicine, Aurora, CO
| | - Chelsea Harris
- Department of Biomedical Research, National Jewish Health, Denver, CO.,Center for Genes, Environment and Health, National Jewish Health, Denver, CO
| | - Jennifer L Rabe
- Division of Hematology, Department of Medicine, University of Colorado School of Medicine, Aurora, CO
| | - Brenna R Hedin
- Department of Biomedical Research, National Jewish Health, Denver, CO.,Center for Genes, Environment and Health, National Jewish Health, Denver, CO
| | - Lesly De Arras
- Center for Genes, Environment and Health, National Jewish Health, Denver, CO
| | - Sigrid Katz
- Division of Hematology and Oncology, University of California, San Diego, La Jolla, CA
| | - Emily Wheeler
- Division of Hematology and Oncology, University of California, San Diego, La Jolla, CA
| | - Rafael Bejar
- Division of Hematology and Oncology, University of California, San Diego, La Jolla, CA
| | - Matthew J Walter
- Division of Oncology, Department of Medicine, Washington University, St. Louis, MO
| | - Craig T Jordan
- Division of Hematology, Department of Medicine, University of Colorado School of Medicine, Aurora, CO
| | - Eric M Pietras
- Division of Hematology, Department of Medicine, University of Colorado School of Medicine, Aurora, CO
| | - Scott Alper
- Department of Biomedical Research, National Jewish Health, Denver, CO .,Center for Genes, Environment and Health, National Jewish Health, Denver, CO.,Department of Immunology and Microbiology, University of Colorado School of Medicine, Aurora, CO, USA
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Abstract
Normally, quiescent hematopoietic stem cells (HSC) rapidly enter the cell cycle following exposure to inflammatory stimuli. The analysis of HSC cell cycle activity in murine bone marrow during inflammation is often complicated by the relative rarity of HSCs and shifts in Sca-1, a key cell surface marker used to identify HSCs. Here, we report a method to analyze HSC proliferation and cell cycle distribution under inflammatory conditions. Our approach uses EdU incorporation and Ki67 staining coupled with DNA content quantification by DAPI. We also incorporate the surface marker ESAM to help minimize the potential for contaminating events that may confound analysis in the HSC compartment.
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Affiliation(s)
- Emilie Jalbert
- Division of Hematology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Eric M Pietras
- Division of Hematology, Department of Medicine, University of Colorado Anschutz Medical Campus, 12700 East 19th Ave, Research Complex 2, Mail Stop F754, Aurora, CO, 80045, USA.
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Hérault A, Binnewies M, Leong S, Calero-Nieto FJ, Zhang SY, Kang YA, Wang X, Pietras EM, Chu SH, Barry-Holson K, Armstrong S, Göttgens B, Passegué E. Myeloid progenitor cluster formation drives emergency and leukaemic myelopoiesis. Nature 2017; 544:53-58. [PMID: 28355185 PMCID: PMC5383507 DOI: 10.1038/nature21693] [Citation(s) in RCA: 130] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2016] [Accepted: 02/07/2017] [Indexed: 02/07/2023]
Abstract
Although many aspects of blood production are well understood, the spatial organization of myeloid differentiation in the bone marrow remains unknown. Here we use imaging to track granulocyte/macrophage progenitor (GMP) behaviour in mice during emergency and leukaemic myelopoiesis. In the steady state, we find individual GMPs scattered throughout the bone marrow. During regeneration, we observe expanding GMP patches forming defined GMP clusters, which, in turn, locally differentiate into granulocytes. The timed release of important bone marrow niche signals (SCF, IL-1β, G-CSF, TGFβ and CXCL4) and activation of an inducible Irf8 and β-catenin progenitor self-renewal network control the transient formation of regenerating GMP clusters. In leukaemia, we show that GMP clusters are constantly produced owing to persistent activation of the self-renewal network and a lack of termination cytokines that normally restore haematopoietic stem-cell quiescence. Our results uncover a previously unrecognized dynamic behaviour of GMPs in situ, which tunes emergency myelopoiesis and is hijacked in leukaemia.
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Affiliation(s)
- Aurélie Hérault
- The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, Department of Medicine, Division of Hematology/Oncology, University of California San Francisco, San Francisco, CA 94143, USA
| | - Mikhail Binnewies
- The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, Department of Medicine, Division of Hematology/Oncology, University of California San Francisco, San Francisco, CA 94143, USA
| | - Stephanie Leong
- The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, Department of Medicine, Division of Hematology/Oncology, University of California San Francisco, San Francisco, CA 94143, USA
| | - Fernando J. Calero-Nieto
- Cambridge University Department of Haematology, Cambridge Institute for Medical Research, Wellcome Trust and MRC Cambridge Stem Cell Institute, Hills Road, Cambridge CB2 0XY, UK
| | - Si Yi Zhang
- The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, Department of Medicine, Division of Hematology/Oncology, University of California San Francisco, San Francisco, CA 94143, USA
| | - Yoon-A Kang
- The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, Department of Medicine, Division of Hematology/Oncology, University of California San Francisco, San Francisco, CA 94143, USA
| | - Xiaonan Wang
- Cambridge University Department of Haematology, Cambridge Institute for Medical Research, Wellcome Trust and MRC Cambridge Stem Cell Institute, Hills Road, Cambridge CB2 0XY, UK
| | - Eric M. Pietras
- The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, Department of Medicine, Division of Hematology/Oncology, University of California San Francisco, San Francisco, CA 94143, USA
| | - S. Haihua Chu
- Department of Pediatric Oncology, Dana-Farber Cancer Institute, and Division of Hematology/Oncology, Boston Children’s Hospital, Harvard Medical School, Boston, MA 02215, USA
| | - Keegan Barry-Holson
- The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, Department of Medicine, Division of Hematology/Oncology, University of California San Francisco, San Francisco, CA 94143, USA
| | - Scott Armstrong
- Department of Pediatric Oncology, Dana-Farber Cancer Institute, and Division of Hematology/Oncology, Boston Children’s Hospital, Harvard Medical School, Boston, MA 02215, USA
| | - Berthold Göttgens
- Cambridge University Department of Haematology, Cambridge Institute for Medical Research, Wellcome Trust and MRC Cambridge Stem Cell Institute, Hills Road, Cambridge CB2 0XY, UK
| | - Emmanuelle Passegué
- The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, Department of Medicine, Division of Hematology/Oncology, University of California San Francisco, San Francisco, CA 94143, USA
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37
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Dudli S, Sing DC, Hu SS, Berven SH, Burch S, Deviren V, Cheng I, Tay BKB, Alamin TF, Ith MAM, Pietras EM, Lotz JC. ISSLS PRIZE IN BASIC SCIENCE 2017: Intervertebral disc/bone marrow cross-talk with Modic changes. Eur Spine J 2017; 26:1362-1373. [PMID: 28138783 DOI: 10.1007/s00586-017-4955-4] [Citation(s) in RCA: 87] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2017] [Accepted: 01/15/2017] [Indexed: 12/18/2022]
Abstract
STUDY DESIGN Cross-sectional cohort analysis of patients with Modic Changes (MC). OBJECTIVE Our goal was to characterize the molecular and cellular features of MC bone marrow and adjacent discs. We hypothesized that MC associate with biologic cross-talk between discs and bone marrow, the presence of which may have both diagnostic and therapeutic implications. BACKGROUND DATA MC are vertebral bone marrow lesions that can be a diagnostic indicator for discogenic low back pain. Yet, the pathobiology of MC is largely unknown. METHODS Patients with Modic type 1 or 2 changes (MC1, MC2) undergoing at least 2-level lumbar interbody fusion with one surgical level having MC and one without MC (control level). Two discs (MC, control) and two bone marrow aspirates (MC, control) were collected per patient. Marrow cellularity was analyzed using flow cytometry. Myelopoietic differentiation potential of bone marrow cells was quantified to gauge marrow function, as was the relative gene expression profiles of the marrow and disc cells. Disc/bone marrow cross-talk was assessed by comparing MC disc/bone marrow features relative to unaffected levels. RESULTS Thirteen MC1 and eleven MC2 patients were included. We observed pro-osteoclastic changes in MC2 discs, an inflammatory dysmyelopoiesis with fibrogenic changes in MC1 and MC2 marrow, and up-regulation of neurotrophic receptors in MC1 and MC2 bone marrow and discs. CONCLUSION Our data reveal a fibrogenic and pro-inflammatory cross-talk between MC bone marrow and adjacent discs. This provides insight into the pain generator at MC levels and informs novel therapeutic targets for treatment of MC-associated LBP.
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Affiliation(s)
- Stefan Dudli
- Department of Orthopaedic Surgery, University of California San Francisco, 513 Parnassus Ave, S-1164, San Francisco, CA, 94143, USA.
| | - David C Sing
- Department of Orthopaedic Surgery, University of California San Francisco, 513 Parnassus Ave, S-1164, San Francisco, CA, 94143, USA
| | - Serena S Hu
- Stanford Spine Clinic, Stanford University Medical Center, Stanford, USA
| | - Sigurd H Berven
- Department of Orthopaedic Surgery, University of California San Francisco, 513 Parnassus Ave, S-1164, San Francisco, CA, 94143, USA
| | - Shane Burch
- Department of Orthopaedic Surgery, University of California San Francisco, 513 Parnassus Ave, S-1164, San Francisco, CA, 94143, USA
| | - Vedat Deviren
- Department of Orthopaedic Surgery, University of California San Francisco, 513 Parnassus Ave, S-1164, San Francisco, CA, 94143, USA
| | - Ivan Cheng
- Stanford Spine Clinic, Stanford University Medical Center, Stanford, USA
| | - Bobby K B Tay
- Department of Orthopaedic Surgery, University of California San Francisco, 513 Parnassus Ave, S-1164, San Francisco, CA, 94143, USA
| | - Todd F Alamin
- Department of Orthopaedic Surgery, University of California San Francisco, 513 Parnassus Ave, S-1164, San Francisco, CA, 94143, USA
| | | | - Eric M Pietras
- Division of Hematology, University of Colorado Denver, Denver, USA
| | - Jeffrey C Lotz
- Department of Orthopaedic Surgery, University of California San Francisco, 513 Parnassus Ave, S-1164, San Francisco, CA, 94143, USA
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Abstract
Type I interferons (IFNs) were first described several decades ago as soluble factors that were capable of `interfering' with viral replication when added to infected cells. Type I IFNs have been shown to be induced by recognition of viral DNA and RNA via three distinct pathways: (i) a TRIFdependent pathway in macrophages via TLRs 3 and 4; (ii) a MyD88-dependent pathway in plasmacytoid dendritic cells (pDCs) via TLRs 7/8 and 9; and (iii) an intracellular recognition pathway utilizing the cytoplasmic receptors RIG-I/MDA5. Interestingly, these viral recognition pathways converge on TRAF3, which induces interferon through the activation of IRF3 or IRF7 by the TBK-1 and IKKi complexes. While type I IFN has been traditionally associated with antiviral responses, recent studies have demonstrated that many bacteria also induce type I interferon responses. The mechanisms of type I IFN induction and its role in host defense, however, are largely unclear. Studies with the Gram-positive intracellular bacterium Listeria monocytogenes indicated that it may trigger type I IFN induction through novel TLR-independent intracellular receptors and type I IFN may play a detrimental role to host response against listerial infection. In this article, we summarize some of these findings and discuss the functional differences of type I IFNs in bacterial and viral infections.
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Affiliation(s)
- Eric M. Pietras
- Department of Microbiology, Immunology and Molecular Genetics, University of California Los Angeles, Los Angeles, California, USA
| | - Supriya K. Saha
- Department of Microbiology, Immunology and Molecular Genetics, University of California Los Angeles, Los Angeles, California, USA, Medical Scientist Training Program, University of California Los Angeles, Los Angeles, California, USA
| | - Genhong Cheng
- Department of Microbiology, Immunology and Molecular Genetics, University of California Los Angeles, Los Angeles, California, USA, , Molecular Biology Institute, University of California Los Angeles, Los Angeles, California, USA, Jonsson Comprehensive Cancer Center, University of California Los Angeles, Los Angeles, California, USA
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Pietras EM, Mirantes-Barbeito C, Fong S, Loeffler D, Kovtonyuk LV, Zhang S, Lakshminarasimhan R, Chin CP, Techner JM, Will B, Nerlov C, Steidl U, Manz MG, Schroeder T, Passegué E. Chronic interleukin-1 exposure drives haematopoietic stem cells towards precocious myeloid differentiation at the expense of self-renewal. Nat Cell Biol 2016; 18:607-18. [PMID: 27111842 PMCID: PMC4884136 DOI: 10.1038/ncb3346] [Citation(s) in RCA: 445] [Impact Index Per Article: 55.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Accepted: 03/24/2016] [Indexed: 02/08/2023]
Abstract
Haematopoietic stem cells (HSC) maintain lifelong blood production and increase blood cell numbers in response to chronic and acute injury. However, the mechanism(s) by which inflammatory insults are communicated to HSCs and their consequences for HSC activity remain largely unknown. Here, we demonstrate that interleukin-1 (IL-1), which functions as a key pro-inflammatory ‘emergency’ signal, directly accelerates cell division and myeloid differentiation of HSCs via precocious activation of a PU.1-dependent gene program. While this effect is essential for rapid myeloid recovery following acute injury to the bone marrow (BM), chronic IL-1 exposure restricts HSC lineage output, severely erodes HSC self-renewal capacity, and primes IL-1-exposed HSCs to fail massive replicative challenges like transplantation. Importantly, these damaging effects are transient and fully reversible upon IL-1 withdrawal. Our results identify a critical regulatory circuit that tailors HSC responses to acute needs, and likely underlies deregulated blood homeostasis in chronic inflammation conditions.
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Affiliation(s)
- Eric M Pietras
- The Eli and Edythe Broad Center for Regenerative Medicine and Stem Cell Research, Department of Medicine, Division of Hematology/Oncology, University of California San Francisco, San Francisco, California 94143, USA
| | - Cristina Mirantes-Barbeito
- The Eli and Edythe Broad Center for Regenerative Medicine and Stem Cell Research, Department of Medicine, Division of Hematology/Oncology, University of California San Francisco, San Francisco, California 94143, USA
| | - Sarah Fong
- The Eli and Edythe Broad Center for Regenerative Medicine and Stem Cell Research, Department of Medicine, Division of Hematology/Oncology, University of California San Francisco, San Francisco, California 94143, USA
| | - Dirk Loeffler
- Department of Biosystems Science and Engineering, ETH Zurich, 4058 Basel, Switzerland
| | - Larisa V Kovtonyuk
- Division of Hematology, University Hospital and University of Zurich, 8091 Zurich, Switzerland
| | - SiYi Zhang
- The Eli and Edythe Broad Center for Regenerative Medicine and Stem Cell Research, Department of Medicine, Division of Hematology/Oncology, University of California San Francisco, San Francisco, California 94143, USA
| | - Ranjani Lakshminarasimhan
- The Eli and Edythe Broad Center for Regenerative Medicine and Stem Cell Research, Department of Medicine, Division of Hematology/Oncology, University of California San Francisco, San Francisco, California 94143, USA
| | - Chih Peng Chin
- The Eli and Edythe Broad Center for Regenerative Medicine and Stem Cell Research, Department of Medicine, Division of Hematology/Oncology, University of California San Francisco, San Francisco, California 94143, USA
| | - José-Marc Techner
- The Eli and Edythe Broad Center for Regenerative Medicine and Stem Cell Research, Department of Medicine, Division of Hematology/Oncology, University of California San Francisco, San Francisco, California 94143, USA
| | - Britta Will
- Department of Cell Biology, Albert Einstein Medical College, Queens, New York 10461, USA
| | - Claus Nerlov
- Weatherall Institute of Molecular Medicine, Oxford University, Oxford OX3 9DS, UK
| | - Ulrich Steidl
- Department of Cell Biology, Albert Einstein Medical College, Queens, New York 10461, USA
| | - Markus G Manz
- Division of Hematology, University Hospital and University of Zurich, 8091 Zurich, Switzerland
| | - Timm Schroeder
- Department of Biosystems Science and Engineering, ETH Zurich, 4058 Basel, Switzerland
| | - Emmanuelle Passegué
- The Eli and Edythe Broad Center for Regenerative Medicine and Stem Cell Research, Department of Medicine, Division of Hematology/Oncology, University of California San Francisco, San Francisco, California 94143, USA
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40
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Pietras EM, Reynaud D, Kang YA, Carlin D, Calero-Nieto FJ, Leavitt AD, Stuart JM, Göttgens B, Passegué E. Functionally Distinct Subsets of Lineage-Biased Multipotent Progenitors Control Blood Production in Normal and Regenerative Conditions. Cell Stem Cell 2015; 17:35-46. [PMID: 26095048 PMCID: PMC4542150 DOI: 10.1016/j.stem.2015.05.003] [Citation(s) in RCA: 417] [Impact Index Per Article: 46.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2014] [Revised: 04/06/2015] [Accepted: 05/13/2015] [Indexed: 01/07/2023]
Abstract
Despite great advances in understanding the mechanisms underlying blood production, lineage specification at the level of multipotent progenitors (MPPs) remains poorly understood. Here, we show that MPP2 and MPP3 are distinct myeloid-biased MPP subsets that work together with lymphoid-primed MPP4 cells to control blood production. We find that all MPPs are produced in parallel by hematopoietic stem cells (HSCs), but with different kinetics and at variable levels depending on hematopoietic demands. We also show that the normally rare myeloid-biased MPPs are transiently overproduced by HSCs in regenerating conditions, hence supporting myeloid amplification to rebuild the hematopoietic system. This shift is accompanied by a reduction in self-renewal activity in regenerating HSCs and reprogramming of MPP4 fate toward the myeloid lineage. Our results support a dynamic model of blood development in which HSCs convey lineage specification through independent production of distinct lineage-biased MPP subsets that, in turn, support lineage expansion and differentiation.
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Affiliation(s)
- Eric M Pietras
- The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, Division of Hematology/Oncology, Department of Medicine, University of California San Francisco, San Francisco, CA 94143, USA
| | - Damien Reynaud
- The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, Division of Hematology/Oncology, Department of Medicine, University of California San Francisco, San Francisco, CA 94143, USA
| | - Yoon-A Kang
- The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, Division of Hematology/Oncology, Department of Medicine, University of California San Francisco, San Francisco, CA 94143, USA
| | - Daniel Carlin
- Department of Biomolecular Engineering and Center for Biomolecular Science and Engineering, University of California Santa Cruz, Santa Cruz, CA 94720, USA
| | - Fernando J Calero-Nieto
- Cambridge University Department of Haematology, Cambridge Institute for Medical Research and Wellcome Trust and MRC Cambridge Stem Cell Institute, Hills Road, Cambridge CB2 0XY, UK
| | - Andrew D Leavitt
- Departments of Medicine and Laboratory Medicine, University of California San Francisco, San Francisco, CA 94143, USA
| | - Joshua M Stuart
- Department of Biomolecular Engineering and Center for Biomolecular Science and Engineering, University of California Santa Cruz, Santa Cruz, CA 94720, USA
| | - Berthold Göttgens
- Cambridge University Department of Haematology, Cambridge Institute for Medical Research and Wellcome Trust and MRC Cambridge Stem Cell Institute, Hills Road, Cambridge CB2 0XY, UK
| | - Emmanuelle Passegué
- The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, Division of Hematology/Oncology, Department of Medicine, University of California San Francisco, San Francisco, CA 94143, USA.
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Pietras EM, Lakshminarasimhan R, Techner JM, Fong S, Flach J, Binnewies M, Passegué E. Re-entry into quiescence protects hematopoietic stem cells from the killing effect of chronic exposure to type I interferons. ACTA ACUST UNITED AC 2014; 211:245-62. [PMID: 24493802 PMCID: PMC3920566 DOI: 10.1084/jem.20131043] [Citation(s) in RCA: 205] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Quiescence acts as a safeguard mechanism to ensure survival of the HSC pool during chronic IFN-1 exposure Type I interferons (IFN-1s) are antiviral cytokines that suppress blood production while paradoxically inducing hematopoietic stem cell (HSC) proliferation. Here, we clarify the relationship between the proliferative and suppressive effects of IFN-1s on HSC function during acute and chronic IFN-1 exposure. We show that IFN-1–driven HSC proliferation is a transient event resulting from a brief relaxation of quiescence-enforcing mechanisms in response to acute IFN-1 exposure, which occurs exclusively in vivo. We find that this proliferative burst fails to exhaust the HSC pool, which rapidly returns to quiescence in response to chronic IFN-1 exposure. Moreover, we demonstrate that IFN-1–exposed HSCs with reestablished quiescence are largely protected from the killing effects of IFNs unless forced back into the cell cycle due to culture, transplantation, or myeloablative treatment, at which point they activate a p53-dependent proapoptotic gene program. Collectively, our results demonstrate that quiescence acts as a safeguard mechanism to ensure survival of the HSC pool during chronic IFN-1 exposure. We show that IFN-1s can poise HSCs for apoptosis but induce direct cell killing only upon active proliferation, thereby establishing a mechanism for the suppressive effects of IFN-1s on HSC function.
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Affiliation(s)
- Eric M Pietras
- The Eli and Edythe Broad Center for Regenerative Medicine and Stem Cell Research, Department of Medicine, Division of Hematology/Oncology, University of California San Francisco, San Francisco, California 94143
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Abstract
Fetal haematopoietic stem cells (HSCs) self-renew extensively to build the blood system from scratch. The protein Lin28b negatively regulates the microRNA let-7 to keep levels of its target Hmga2 high, hence conferring high self-renewal potential to fetal HSCs. This regulatory circuit can be experimentally modulated to boost the lower self-renewal activity of quiescent adult HSCs.
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Pietras EM, Passegué E. Erratum: Linking HSCs to their youth. Nat Cell Biol 2013. [DOI: 10.1038/ncb2841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Schepers K, Pietras EM, Reynaud D, Flach J, Binnewies M, Garg T, Wagers AJ, Hsiao EC, Passegué E. Myeloproliferative neoplasia remodels the endosteal bone marrow niche into a self-reinforcing leukemic niche. Cell Stem Cell 2013; 13:285-99. [PMID: 23850243 DOI: 10.1016/j.stem.2013.06.009] [Citation(s) in RCA: 469] [Impact Index Per Article: 42.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2012] [Revised: 05/07/2013] [Accepted: 06/11/2013] [Indexed: 01/16/2023]
Abstract
Multipotent stromal cells (MSCs) and their osteoblastic lineage cell (OBC) derivatives are part of the bone marrow (BM) niche and contribute to hematopoietic stem cell (HSC) maintenance. Here, we show that myeloproliferative neoplasia (MPN) progressively remodels the endosteal BM niche into a self-reinforcing leukemic niche that impairs normal hematopoiesis, favors leukemic stem cell (LSC) function, and contributes to BM fibrosis. We show that leukemic myeloid cells stimulate MSCs to overproduce functionally altered OBCs, which accumulate in the BM cavity as inflammatory myelofibrotic cells. We identify roles for thrombopoietin, CCL3, and direct cell-cell interactions in driving OBC expansion, and for changes in TGF-β, Notch, and inflammatory signaling in OBC remodeling. MPN-expanded OBCs, in turn, exhibit decreased expression of many HSC retention factors and severely compromised ability to maintain normal HSCs, but effectively support LSCs. Targeting this pathological interplay could represent a novel avenue for treatment of MPN-affected patients and prevention of myelofibrosis.
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Affiliation(s)
- Koen Schepers
- Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, Division of Hematology/Oncology, Department of Medicine, University of California San Francisco, San Francisco, CA 94143, USA
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Abstract
Hematopoietic stem cells (HSCs) give rise to all lineages of blood cells. Because HSCs must persist for a lifetime, the balance between their proliferation and quiescence is carefully regulated to ensure blood homeostasis while limiting cellular damage. Cell cycle regulation therefore plays a critical role in controlling HSC function during both fetal life and in the adult. The cell cycle activity of HSCs is carefully modulated by a complex interplay between cell-intrinsic mechanisms and cell-extrinsic factors produced by the microenvironment. This fine-tuned regulatory network may become altered with age, leading to aberrant HSC cell cycle regulation, degraded HSC function, and hematological malignancy.
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Affiliation(s)
- Eric M Pietras
- Department of Medicine, Division of Hematology/Oncology, The Eli and Edythe Broad Center for Regenerative Medicine and Stem Cell Research, University of California, San Francisco, San Francisco, CA 94143, USA
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Pietras EM, Miller LS, Johnson CT, O'Connell RM, Dempsey PW, Cheng G. A MyD88-dependent IFNγR-CCR2 signaling circuit is required for mobilization of monocytes and host defense against systemic bacterial challenge. Cell Res 2011; 21:1068-79. [PMID: 21467996 PMCID: PMC3193491 DOI: 10.1038/cr.2011.59] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2010] [Revised: 10/25/2010] [Accepted: 12/15/2010] [Indexed: 12/24/2022] Open
Abstract
Monocytes are mobilized to sites of infection via interaction between the chemokine MCP-1 and its receptor, CCR2, at which point they differentiate into macrophages that mediate potent antimicrobial effects. In this study, we investigated the mechanisms by which monocytes are mobilized in response to systemic challenge with the intracellular bacterium Francisella tularensis. We found that mice deficient in MyD88, interferon-γ (IFNγ)R or CCR2 all had defects in the expansion of splenic monocyte populations upon F. tularensis challenge, and in control of F. tularensis infection. Interestingly, MyD88-deficient mice were defective in production of IFNγ, and IFNγR-deficient mice exhibited defective production of MCP-1, the ligand for CCR2. Transplantation of IFNγR-deficient bone marrow (BM) into wild-type mice further suggested that mobilization of monocytes in response to F. tularensis challenge required IFNγR expression on BM-derived cells. These studies define a critical host defense circuit wherein MyD88-dependent IFNγ production signals via IFNγR expressed on BM-derived cells, resulting in MCP-1 production and activation of CCR2-dependent mobilization of monocytes in the innate immune response to systemic F. tularensis challenge.
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Affiliation(s)
- Eric M Pietras
- Department of Microbiology, Immunology and Molecular Genetics, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA 90095, USA
| | - Lloyd S Miller
- Department of Microbiology, Immunology and Molecular Genetics, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA 90095, USA
- Division of Dermatology, Department of Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA 90095, USA
| | - Carl T Johnson
- Department of Microbiology, Immunology and Molecular Genetics, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA 90095, USA
| | - Ryan M O'Connell
- Department of Microbiology, Immunology and Molecular Genetics, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA 90095, USA
| | - Paul W Dempsey
- Department of Microbiology, Immunology and Molecular Genetics, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA 90095, USA
- Current address: Cynvenio Biosystems LLC, Westlake Village, CA 91361, USA
| | - Genhong Cheng
- Department of Microbiology, Immunology and Molecular Genetics, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA 90095, USA
- Division of Dermatology, Department of Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA 90095, USA
- Molecular Biology Institute, University of California, Los Angeles, Los Angeles, CA 90095, USA
- Jonsson Comprehensive Cancer Center, University of California, Los Angeles, Los Angeles, CA 90095, USA
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Warr MR, Pietras EM, Passegué E. Mechanisms controlling hematopoietic stem cell functions during normal hematopoiesis and hematological malignancies. Wiley Interdiscip Rev Syst Biol Med 2011; 3:681-701. [PMID: 21412991 DOI: 10.1002/wsbm.145] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Hematopoiesis, the process by which all mature blood cells are generated from multipotent hematopoietic stem cells (HSCs), is a finely tuned balancing act in which HSCs must constantly decide between different cell fates: to proliferate, to self-renew or differentiate, to stay quiescent in the bone marrow niche or migrate to the periphery, to live or die. These fates are regulated by a complex interplay between cell-extrinsic cues and cell-intrinsic regulatory pathways whose function is to maintain a homeostatic balance between HSC self-renewal and life-long replenishment of lost blood cells. Improper regulation of these competing cellular programs can transform HSCs and progenitor cells into disease-initiating leukemic stem cells (LSCs). Strikingly, many of the mechanisms required for maintenance of normal HSC fate decisions are equally critical for the aberrant functions of LSCs. Because of the inherent complexities of these molecular mechanisms, a systematic approach to understanding the regulatory networks underlying HSC self-renewal is critical for uncovering the similarities and differences between HSCs and LSCs. In this review, we focus on recent developments in elucidating the regulatory networks governing normal HSC self-renewal programs and their implications for leukemic transformation. We describe the current technical and methodological limitations in isolating and characterizing HSCs and LSCs, and the emerging approaches that may afford a better understanding of the regulation of normal and leukemic hematopoiesis. Finally, we discuss how such basic mechanistic information may be of use for the design of novel therapies that will selectively reprogram and/or eliminate LSCs.
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Affiliation(s)
- Matthew R Warr
- The Eli and Edythe Broad Center for Regenerative Medicine and Stem Cell Research, Division of Hematology/Oncology, Department of Medicine, University of California San Francisco, San Francisco, CA, USA
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Cho JS, Pietras EM, Garcia NC, Ramos RI, Farzam DM, Monroe HR, Magorien JE, Blauvelt A, Kolls JK, Cheung AL, Cheng G, Modlin RL, Miller LS. IL-17 is essential for host defense against cutaneous Staphylococcus aureus infection in mice. J Clin Invest 2010; 120:1762-73. [PMID: 20364087 PMCID: PMC2860944 DOI: 10.1172/jci40891] [Citation(s) in RCA: 481] [Impact Index Per Article: 34.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2009] [Accepted: 01/27/2010] [Indexed: 12/12/2022] Open
Abstract
Staphylococcus aureus is the most common cause of skin and soft tissue infections, and rapidly emerging antibiotic-resistant strains are creating a serious public health concern. If immune-based therapies are to be an alternative to antibiotics, greater understanding is needed of the protective immune response against S. aureus infection in the skin. Although neutrophil recruitment is required for immunity against S. aureus, a role for T cells has been suggested. Here, we used a mouse model of S. aureus cutaneous infection to investigate the contribution of T cells to host defense. We found that mice deficient in gammadelta but not alphabeta T cells had substantially larger skin lesions with higher bacterial counts and impaired neutrophil recruitment compared with WT mice. This neutrophil recruitment was dependent upon epidermal Vgamma5+ gammadelta T cell production of IL-17, but not IL-21 and IL-22. Furthermore, IL-17 induction required IL-1, TLR2, and IL-23 and was critical for host defense, since IL-17R-deficient mice had a phenotype similar to that of gammadelta T cell-deficient mice. Importantly, gammadelta T cell-deficient mice inoculated with S. aureus and treated with a single dose of recombinant IL-17 had lesion sizes and bacterial counts resembling those of WT mice, demonstrating that IL-17 could restore the impaired immunity in these mice. Our study defines what we believe to be a novel role for IL-17-producing epidermal gammadelta T cells in innate immunity against S. aureus cutaneous infection.
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Affiliation(s)
- John S. Cho
- Division of Dermatology and
Department of Microbiology, Immunology, and Molecular Genetics, UCLA, Los Angeles, California, USA.
Dermatology Service, Veterans Affairs Medical Center, Portland, Oregon, USA.
Department of Genetics, Louisiana State University Health Sciences Center, New Orleans, Louisiana, USA.
Department of Microbiology and Immunology, Dartmouth Medical School, Hanover, New Hampshire, USA
| | - Eric M. Pietras
- Division of Dermatology and
Department of Microbiology, Immunology, and Molecular Genetics, UCLA, Los Angeles, California, USA.
Dermatology Service, Veterans Affairs Medical Center, Portland, Oregon, USA.
Department of Genetics, Louisiana State University Health Sciences Center, New Orleans, Louisiana, USA.
Department of Microbiology and Immunology, Dartmouth Medical School, Hanover, New Hampshire, USA
| | - Nairy C. Garcia
- Division of Dermatology and
Department of Microbiology, Immunology, and Molecular Genetics, UCLA, Los Angeles, California, USA.
Dermatology Service, Veterans Affairs Medical Center, Portland, Oregon, USA.
Department of Genetics, Louisiana State University Health Sciences Center, New Orleans, Louisiana, USA.
Department of Microbiology and Immunology, Dartmouth Medical School, Hanover, New Hampshire, USA
| | - Romela Irene Ramos
- Division of Dermatology and
Department of Microbiology, Immunology, and Molecular Genetics, UCLA, Los Angeles, California, USA.
Dermatology Service, Veterans Affairs Medical Center, Portland, Oregon, USA.
Department of Genetics, Louisiana State University Health Sciences Center, New Orleans, Louisiana, USA.
Department of Microbiology and Immunology, Dartmouth Medical School, Hanover, New Hampshire, USA
| | - David M. Farzam
- Division of Dermatology and
Department of Microbiology, Immunology, and Molecular Genetics, UCLA, Los Angeles, California, USA.
Dermatology Service, Veterans Affairs Medical Center, Portland, Oregon, USA.
Department of Genetics, Louisiana State University Health Sciences Center, New Orleans, Louisiana, USA.
Department of Microbiology and Immunology, Dartmouth Medical School, Hanover, New Hampshire, USA
| | - Holly R. Monroe
- Division of Dermatology and
Department of Microbiology, Immunology, and Molecular Genetics, UCLA, Los Angeles, California, USA.
Dermatology Service, Veterans Affairs Medical Center, Portland, Oregon, USA.
Department of Genetics, Louisiana State University Health Sciences Center, New Orleans, Louisiana, USA.
Department of Microbiology and Immunology, Dartmouth Medical School, Hanover, New Hampshire, USA
| | - Julie E. Magorien
- Division of Dermatology and
Department of Microbiology, Immunology, and Molecular Genetics, UCLA, Los Angeles, California, USA.
Dermatology Service, Veterans Affairs Medical Center, Portland, Oregon, USA.
Department of Genetics, Louisiana State University Health Sciences Center, New Orleans, Louisiana, USA.
Department of Microbiology and Immunology, Dartmouth Medical School, Hanover, New Hampshire, USA
| | - Andrew Blauvelt
- Division of Dermatology and
Department of Microbiology, Immunology, and Molecular Genetics, UCLA, Los Angeles, California, USA.
Dermatology Service, Veterans Affairs Medical Center, Portland, Oregon, USA.
Department of Genetics, Louisiana State University Health Sciences Center, New Orleans, Louisiana, USA.
Department of Microbiology and Immunology, Dartmouth Medical School, Hanover, New Hampshire, USA
| | - Jay K. Kolls
- Division of Dermatology and
Department of Microbiology, Immunology, and Molecular Genetics, UCLA, Los Angeles, California, USA.
Dermatology Service, Veterans Affairs Medical Center, Portland, Oregon, USA.
Department of Genetics, Louisiana State University Health Sciences Center, New Orleans, Louisiana, USA.
Department of Microbiology and Immunology, Dartmouth Medical School, Hanover, New Hampshire, USA
| | - Ambrose L. Cheung
- Division of Dermatology and
Department of Microbiology, Immunology, and Molecular Genetics, UCLA, Los Angeles, California, USA.
Dermatology Service, Veterans Affairs Medical Center, Portland, Oregon, USA.
Department of Genetics, Louisiana State University Health Sciences Center, New Orleans, Louisiana, USA.
Department of Microbiology and Immunology, Dartmouth Medical School, Hanover, New Hampshire, USA
| | - Genhong Cheng
- Division of Dermatology and
Department of Microbiology, Immunology, and Molecular Genetics, UCLA, Los Angeles, California, USA.
Dermatology Service, Veterans Affairs Medical Center, Portland, Oregon, USA.
Department of Genetics, Louisiana State University Health Sciences Center, New Orleans, Louisiana, USA.
Department of Microbiology and Immunology, Dartmouth Medical School, Hanover, New Hampshire, USA
| | - Robert L. Modlin
- Division of Dermatology and
Department of Microbiology, Immunology, and Molecular Genetics, UCLA, Los Angeles, California, USA.
Dermatology Service, Veterans Affairs Medical Center, Portland, Oregon, USA.
Department of Genetics, Louisiana State University Health Sciences Center, New Orleans, Louisiana, USA.
Department of Microbiology and Immunology, Dartmouth Medical School, Hanover, New Hampshire, USA
| | - Lloyd S. Miller
- Division of Dermatology and
Department of Microbiology, Immunology, and Molecular Genetics, UCLA, Los Angeles, California, USA.
Dermatology Service, Veterans Affairs Medical Center, Portland, Oregon, USA.
Department of Genetics, Louisiana State University Health Sciences Center, New Orleans, Louisiana, USA.
Department of Microbiology and Immunology, Dartmouth Medical School, Hanover, New Hampshire, USA
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Pietras EM, Cheng G. New tricks for old NODs. Genome Biol 2008; 9:217. [PMID: 18466630 PMCID: PMC2643928 DOI: 10.1186/gb-2008-9-4-217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
The mammalian NOD-like receptor NLRX1 appears to have a role as a regulator of antiviral response pathways. Recent work has identified the human NOD-like receptor NLRX1 as a negative regulator of intracellular signaling leading to type I interferon production. Here we discuss these findings and the questions and implications they raise regarding the function of NOD-like receptors in the antiviral response.
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