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Astori A, Tingvall-Gustafsson J, Kuruvilla J, Coyaud E, Laurent EMN, Sunnerhagen M, Åhsberg J, Ungerbäck J, Strid T, Sigvardsson M, Raught B, Somasundaram R. ARID1a Associates with Lymphoid-Restricted Transcription Factors and Has an Essential Role in T Cell Development. THE JOURNAL OF IMMUNOLOGY 2020; 205:1419-1432. [PMID: 32747500 DOI: 10.4049/jimmunol.1900959] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Accepted: 06/29/2020] [Indexed: 11/19/2022]
Abstract
Maturation of lymphoid cells is controlled by the action of stage and lineage-restricted transcription factors working in concert with the general transcription and chromatin remodeling machinery to regulate gene expression. To better understand this functional interplay, we used Biotin Identification in human embryonic kidney cells to identify proximity interaction partners for GATA3, TCF7 (TCF1), SPI1, HLF, IKZF1, PAX5, ID1, and ID2. The proximity interaction partners shared among the lineage-restricted transcription factors included ARID1a, a BRG1-associated factor complex component. CUT&RUN analysis revealed that ARID1a shared binding with TCF7 and GATA3 at a substantial number of putative regulatory elements in mouse T cell progenitors. In support of an important function for ARID1a in lymphocyte development, deletion of Arid1a in early lymphoid progenitors in mice resulted in a pronounced developmental arrest in early T cell development with a reduction of CD4+CD8+ cells and a 20-fold reduction in thymic cellularity. Exploring gene expression patterns in DN3 cells from Wt and Arid1a-deficient mice suggested that the developmental block resided in the DN3a to DN3b transition, indicating a deficiency in β-selection. Our work highlights the critical importance of functional interactions between stage and lineage-restricted factors and the basic transcription machinery during lymphocyte differentiation.
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Affiliation(s)
- Audrey Astori
- Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario M5G 1L7, Canada
| | | | - Jacob Kuruvilla
- Department of Biomedical and Clinical Sciences, Linköping University, 581 85 Linköping, Sweden
| | - Etienne Coyaud
- Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario M5G 1L7, Canada
| | - Estelle M N Laurent
- Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario M5G 1L7, Canada
| | - Maria Sunnerhagen
- Department of Physics, Chemistry and Biology, Linköping University, 581 83 Linköping, Sweden; and
| | - Josefine Åhsberg
- Department of Biomedical and Clinical Sciences, Linköping University, 581 85 Linköping, Sweden
| | - Jonas Ungerbäck
- Division of Molecular Hematology, Lund University, 22184 Lund, Sweden
| | - Tobias Strid
- Department of Biomedical and Clinical Sciences, Linköping University, 581 85 Linköping, Sweden
| | - Mikael Sigvardsson
- Division of Molecular Hematology, Lund University, 22184 Lund, Sweden; .,Department of Biomedical and Clinical Sciences, Linköping University, 581 85 Linköping, Sweden
| | - Brian Raught
- Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario M5G 1L7, Canada.,Department of Medical Biophysics, University of Toronto, Toronto, Ontario M5S 3K1, Canada
| | - Rajesh Somasundaram
- Department of Biomedical and Clinical Sciences, Linköping University, 581 85 Linköping, Sweden
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Siegemund S, Shepherd J, Xiao C, Sauer K. hCD2-iCre and Vav-iCre mediated gene recombination patterns in murine hematopoietic cells. PLoS One 2015; 10:e0124661. [PMID: 25884630 PMCID: PMC4401753 DOI: 10.1371/journal.pone.0124661] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2015] [Accepted: 03/17/2015] [Indexed: 12/13/2022] Open
Abstract
Cre-recombinase mediated conditional deletion of Lox-P site flanked ("floxed") genes is widely used for functional gene annotation in mice. Many different Cre-transgenic mouse lines have been developed for cell-type specific gene disruption. But often, the precise tissue-patterns of Cre activity remain incompletely characterized. Two widely used transgenes for conditional gene recombination in hematopoietic cells are Vav-iCre driven from the murine Vav1 promotor, and hCD2-iCre driven from the human CD2 promotor. Vav-iCre expresses active Cre in fetal and adult hematopoietic stem cells and all descendants, hCD2-iCre in immature and mature B and T lymphocytes. To better characterize which hematopoietic cells contain hCD2-iCre activity, we compared EYFP fluorescence in hCD2-iCre+/- R26-stop-EYFP+/- and Vav-iCre+/- R26-stop-EYFP+/-mice. R26-stop-EYFP ubiquitously encodes EYFP preceded by a floxed stop cassette. By removing it, Cre activity induces measurable EYFP expression. Our results confirm the known activity patterns for both Cre transgenes and unveil additional hCD2-iCre mediated reporter gene recombination in common lymphoid progenitors, in natural killer cells and their progenitors, and in plasmacytoid and conventional dendritic cells. This supports previously proposed common lymphoid origins for natural killer cells and subsets of dendritic cells, and indicates the need to consider pleiotropic effects when studying hCD2-iCre mediated conditional knockout mice. Vav-iCre+/- R26-stop-EYFP+/-mice did not show the non-hematopoietic recombination in vascular endothelial cells seen in other Vav-Cre mouse lines, but displayed an unexpected Vav-iCre mediated recombination in a bone cell subset lacking hematopoietic markers. This pinpoints the need to consider stromal cell contributions to phenotypes of Vav-iCre mediated conditional knockout mice. Altogether, our data provide the first detailed assessment of hCD2-iCre and Vav-iCre mediated deletion of floxed genes during lymphocyte development from hematopoietic stem cells and open up novel applications for either Cre-transgenic mouse line.
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Affiliation(s)
- Sabine Siegemund
- Department of Immunology and Microbial Science, The Scripps Research Institute, La Jolla, California, United States of America
| | - Jovan Shepherd
- Department of Immunology and Microbial Science, The Scripps Research Institute, La Jolla, California, United States of America
| | - Changchun Xiao
- Department of Immunology and Microbial Science, The Scripps Research Institute, La Jolla, California, United States of America
| | - Karsten Sauer
- Department of Immunology and Microbial Science, The Scripps Research Institute, La Jolla, California, United States of America
- Department of Cell and Molecular Biology, The Scripps Research Institute, La Jolla, California, United States of America
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Zha Y, Shah R, Locke F, Wong A, Gajewski TF. Use of Cre-adenovirus and CAR transgenic mice for efficient deletion of genes in post-thymic T cells. J Immunol Methods 2007; 331:94-102. [PMID: 18177887 DOI: 10.1016/j.jim.2007.11.013] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2007] [Revised: 10/22/2007] [Accepted: 11/25/2007] [Indexed: 11/15/2022]
Abstract
Conditional gene deletion using lineage-specific transgenic expression of Cre has been useful for defining the role of specific gene products in mice in vivo. However, this technology has had limitations for studies of peripheral T cell biology, since the T-lineage promoters commonly used are active early in thymic development. As such, T cell development can be altered by the resulting genetic alterations, thus limiting the interpretation of the data in post-thymic T cell studies. Thus, new strategies are needed to delete targeted genes directly in peripheral T lymphocytes. The availability of transgenic mice expressing the CAR in the T cell compartment enabled testing of Cre-mediated recombination using an adenoviral vector in naïve peripheral T cells in vitro, even without cellular activation. Using Rosa26R reporterxCAR transgenic mice, we describe conditions by which Cre-mediated deletion of targeted genes can be achieved with primary T cells in vitro. These cells can also be adoptively transferred into defined recipient mice for study in vivo. We use conditional PTEN-deficient mice as proof of concept to confirm the value of this technique for deleting a negative regulator of T cell activation. This technology should be broadly applicable for studies of T cell-specific gene deletion to gain understanding of function in the post-thymic T cell compartment.
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Affiliation(s)
- Yuanyuan Zha
- Department of Pathology and Department of Medicine, University of Chicago, Chicago, IL 60637, USA
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