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Báječný M, Chen CL, Faltusová K, Heizer T, Szikszai K, Páral P, Šefc L, Nečas E. Hematopoiesis Remains Permissive to Bone Marrow Transplantation After Expansion of Progenitors and Resumption of Blood Cell Production. Front Cell Dev Biol 2021; 9:660617. [PMID: 34414177 PMCID: PMC8369928 DOI: 10.3389/fcell.2021.660617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Accepted: 07/05/2021] [Indexed: 11/30/2022] Open
Abstract
The immense regenerative power of hematopoietic tissue stems from the activation of the immature stem cells and the progenitor cells. After partial damage, hematopoiesis is reconstituted through a period of intense regeneration when blood cell production originates from erythro-myeloid progenitors in the virtual absence of stem cells. Since the damaged hematopoiesis can also be reconstituted from transplanted hematopoietic cells, we asked whether this also leads to the transient state when activated progenitors initially execute blood cell production. We first showed that the early reconstitution of hematopoiesis from transplanted cells gives rise to extended populations of developmentally advanced but altered progenitor cells, similar to those previously identified in the bone marrow regenerating from endogenous cells. We then identified the cells that give rise to these progenitors after transplantation as LSK CD48– cells. In the submyeloablative irradiated host mice, the transplanted LSK CD48– cells preferably colonized the spleen. Unlike the endogenous hematopoiesis reconstituting cells, the transplanted whole bone marrow cells and sorted LSK CD48– cells had greater potential to differentiate to B-lymphopoiesis. Separate transplantation of the CD150– and CD150+ subsets of LSK CD48– cells suggested that CD150– cells had a greater preference to B-lymphopoiesis than CD150+ cells. In the intensively regenerating hematopoiesis, the CD71/Sca-1 plot of immature murine hematopoietic cells revealed that the expanded populations of altered myeloid progenitors were highly variable in the different places of hematopoietic tissues. This high variability is likely caused by the heterogeneity of the hematopoiesis supporting stroma. Lastly, we demonstrate that during the period when active hematopoiesis resumes from transplanted cells, the hematopoietic tissues still remain highly permissive for further engraftment of transplanted cells, particularly the stem cells. Thus, these results provide a rationale for the transplantation of the hematopoietic stem cells in successive doses that could be used to boost the transplantation outcome.
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Affiliation(s)
- Martin Báječný
- 1st Faculty of Medicine, Institute of Pathological Physiology, Charles University, Prague, Czechia.,1st Faculty of Medicine, Center for Advanced Preclinical Imaging (CAPI), Charles University, Prague, Czechia
| | - Chia-Ling Chen
- 1st Faculty of Medicine, Institute of Pathological Physiology, Charles University, Prague, Czechia
| | - Kateřina Faltusová
- 1st Faculty of Medicine, Institute of Pathological Physiology, Charles University, Prague, Czechia
| | - Tomáš Heizer
- 1st Faculty of Medicine, Institute of Pathological Physiology, Charles University, Prague, Czechia.,1st Faculty of Medicine, Center for Advanced Preclinical Imaging (CAPI), Charles University, Prague, Czechia
| | - Katarína Szikszai
- 1st Faculty of Medicine, Institute of Pathological Physiology, Charles University, Prague, Czechia
| | - Petr Páral
- 1st Faculty of Medicine, Institute of Pathological Physiology, Charles University, Prague, Czechia.,1st Faculty of Medicine, Center for Advanced Preclinical Imaging (CAPI), Charles University, Prague, Czechia
| | - Luděk Šefc
- 1st Faculty of Medicine, Center for Advanced Preclinical Imaging (CAPI), Charles University, Prague, Czechia
| | - Emanuel Nečas
- 1st Faculty of Medicine, Institute of Pathological Physiology, Charles University, Prague, Czechia
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Wogsland CE, Lien HE, Pedersen L, Hanjra P, Grondal SM, Brekken RA, Lorens JB, Halberg N. High-dimensional immunotyping of tumors grown in obese and non-obese mice. Dis Model Mech 2021; 14:dmm048977. [PMID: 33653826 PMCID: PMC8033414 DOI: 10.1242/dmm.048977] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Accepted: 02/22/2021] [Indexed: 11/20/2022] Open
Abstract
Obesity is a disease characterized by chronic low-grade systemic inflammation and has been causally linked to the development of 13 cancer types. Several studies have been undertaken to determine whether tumors evolving in obese environments adapt differential interactions with immune cells and whether this can be connected to disease outcome. Most of these studies have been limited to single-cell lines and tumor models and analysis of limited immune cell populations. Given the multicellular complexity of the immune system and its dysregulation in obesity, we applied high-dimensional suspension mass cytometry to investigate how obesity affects tumor immunity. We used a 36-marker immune-focused mass cytometry panel to interrogate the immune landscape of orthotopic syngeneic mouse models of pancreatic and breast cancer. Unanchored batch correction was implemented to enable simultaneous analysis of tumor cohorts to uncover the immunotypes of each cancer model and reveal remarkably model-specific immune regulation. In the E0771 breast cancer model, we demonstrate an important link to obesity with an increase in two T-cell-suppressive cell types and a decrease in CD8 T cells.
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Affiliation(s)
- Cara E. Wogsland
- Department of Biomedicine, University of Bergen, N-5020 Bergen, Norway
| | - Hilde E. Lien
- Department of Biomedicine, University of Bergen, N-5020 Bergen, Norway
| | - Line Pedersen
- Department of Biomedicine, University of Bergen, N-5020 Bergen, Norway
| | - Pahul Hanjra
- Department of Biomedicine, University of Bergen, N-5020 Bergen, Norway
| | - Sturla M. Grondal
- Department of Biomedicine, University of Bergen, N-5020 Bergen, Norway
| | - Rolf A. Brekken
- Division of Surgical Oncology, Department of Surgery, and Hamon Center for Therapeutic Oncology Research, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
- Department of Pharmacology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - James B. Lorens
- Department of Biomedicine, University of Bergen, N-5020 Bergen, Norway
| | - Nils Halberg
- Department of Biomedicine, University of Bergen, N-5020 Bergen, Norway
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Chauvistré H, Küstermann C, Rehage N, Klisch T, Mitzka S, Felker P, Rose-John S, Zenke M, Seré KM. Dendritic cell development requires histone deacetylase activity. Eur J Immunol 2014; 44:2478-88. [PMID: 24810486 PMCID: PMC4209797 DOI: 10.1002/eji.201344150] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2013] [Revised: 04/08/2014] [Accepted: 04/30/2014] [Indexed: 01/24/2023]
Abstract
DCs develop from multipotent progenitors (MPPs), which commit into DC-restricted common dendritic cell progenitors (CDPs). CDPs further differentiate into classical DCs (cDCs) and plasmacytoid DCs (pDCs). Here, we studied the impact of histone acetylation on DC development in C57BL/6 mice by interfering with histone acetylation and deacetylation, employing histone deacetylase (HDAC) inhibitors. We observed that commitment of MPPs into CDPs was attenuated by HDAC inhibition and that pDC development was specifically blocked. Gene expression profiling revealed that HDAC inhibition prevents establishment of a DC-specific gene expression repertoire. Importantly, protein levels of the core DC transcription factor PU.1 were reduced in HDAC inhibitor-treated cells and consequently PU.1 recruitment at PU.1 target genes Fms-like tyrosine kinase 3 (Flt3), interferon regulatory factor 8 (IRF8), and PU.1 itself was impaired. Thus, our results demonstrate that attenuation of PU.1 expression by HDAC inhibition causes reduced expression of key DC regulators, which results in attenuation of DC development. We propose that chromatin modifiers, such as HDACs, are required for establishing a DC gene network, where Flt3/STAT3 signaling drives PU.1 and IRF8 expression and DC development. Taken together, our study identifies HDACs as critical regulators of DC lineage commitment and development.
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Affiliation(s)
- Heike Chauvistré
- Institute for Biomedical Engineering, Department of Cell Biology, RWTH Aachen University Medical School, Aachen, Germany; Helmholtz Institute for Biomedical Engineering, RWTH Aachen University, Aachen, Germany
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