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DeBerge M, Schroth S, Du F, Yeap XY, Wang JJ, Zhang ZJ, Ansari MJ, Scott EA, Thorp EB. Hypoxia inducible factor 2α promotes tolerogenic macrophage development during cardiac transplantation through transcriptional regulation of colony stimulating factor 1 receptor. Proc Natl Acad Sci U S A 2024; 121:e2319623121. [PMID: 38889142 PMCID: PMC11214057 DOI: 10.1073/pnas.2319623121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Accepted: 05/20/2024] [Indexed: 06/20/2024] Open
Abstract
Solid organ transplantation mobilizes myeloid cells, including monocytes and macrophages, which are central protagonists of allograft rejection. However, myeloid cells can also be functionally reprogrammed by perioperative costimulatory blockade to promote a state of transplantation tolerance. Transplantation tolerance holds promise to reduce complications from chronic immunosuppression and promote long-term survival in transplant recipients. We sought to identify different mediators of transplantation tolerance by performing single-cell RNA sequencing of acute rejecting or tolerized cardiac allografts. This led to the unbiased identification of the transcription factor, hypoxia inducible factor (HIF)-2α, in a subset of tolerogenic monocytes. Using flow cytometric analyses and mice with conditional loss or gain of function, we uncovered that myeloid cell expression of HIF-2α was required for costimulatory blockade-induced transplantation tolerance. While HIF-2α was dispensable for mobilization of tolerogenic monocytes, which were sourced in part from the spleen, it promoted the expression of colony stimulating factor 1 receptor (CSF1R). CSF1R mediates monocyte differentiation into tolerogenic macrophages and was found to be a direct transcriptional target of HIF-2α in splenic monocytes. Administration of the HIF stabilizer, roxadustat, within micelles to target myeloid cells, increased HIF-2α in splenic monocytes, which was associated with increased CSF1R expression and enhanced cardiac allograft survival. These data support further exploration of HIF-2α activation in myeloid cells as a therapeutic strategy for transplantation tolerance.
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Affiliation(s)
- Matthew DeBerge
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, IL60611
- Department of Anesthesiology, Critical Care and Pain Medicine, University of Texas Health Science Center, Houston, TX77030
| | - Samantha Schroth
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, IL60611
| | - Fanfan Du
- Department of Biomedical Engineering, Northwestern University, Evanston, IL60208
| | - Xin Yi Yeap
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, IL60611
| | - Jiao-Jing Wang
- Department of Surgery, Comprehensive Transplant Center, Northwestern University, Chicago, IL60611
| | - Zheng Jenny Zhang
- Department of Surgery, Comprehensive Transplant Center, Northwestern University, Chicago, IL60611
| | - Mohammed Javeed Ansari
- Division of Nephrology and Hypertension, Feinberg School of Medicine, Northwestern University, Chicago, IL60611
| | - Evan A. Scott
- Department of Biomedical Engineering, Northwestern University, Evanston, IL60208
| | - Edward B. Thorp
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, IL60611
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Rock KD, Folts LM, Zierden HC, Marx-Rattner R, Leu NA, Nugent BM, Bale TL. Developmental transcriptomic patterns can be altered by transgenic overexpression of Uty. Sci Rep 2023; 13:21082. [PMID: 38030664 PMCID: PMC10687263 DOI: 10.1038/s41598-023-47977-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Accepted: 11/20/2023] [Indexed: 12/01/2023] Open
Abstract
The genetic material encoded on X and Y chromosomes provides the foundation by which biological sex differences are established. Epigenetic regulators expressed on these sex chromosomes, including Kdm6a (Utx), Kdm5c, and Ddx3x have far-reaching impacts on transcriptional control of phenotypic sex differences. Although the functionality of UTY (Kdm6c, the Y-linked homologue of UTX), has been supported by more recent studies, its role in developmental sex differences is not understood. Here we test the hypothesis that UTY is an important transcriptional regulator during development that could contribute to sex-specific phenotypes and disease risks across the lifespan. We generated a random insertion Uty transgenic mouse (Uty-Tg) to overexpress Uty. By comparing transcriptomic profiles in developmental tissues, placenta and hypothalamus, we assessed potential UTY functional activity, comparing Uty-expressing female mice (XX + Uty) with wild-type male (XY) and female (XX) mice. To determine if Uty expression altered physiological or behavioral outcomes, adult mice were phenotypically examined. Uty expression masculinized female gene expression patterns in both the placenta and hypothalamus. Gene ontology (GO) and gene set enrichment analysis (GSEA) consistently identified pathways including immune and synaptic signaling as biological processes associated with UTY. Interestingly, adult females expressing Uty gained less weight and had a greater glucose tolerance compared to wild-type male and female mice when provided a high-fat diet. Utilizing a Uty-overexpressing transgenic mouse, our results provide novel evidence as to a functional transcriptional role for UTY in developing tissues, and a foundation to build on its prospective capacity to influence sex-specific developmental and health outcomes.
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Affiliation(s)
- Kylie D Rock
- Center for Epigenetic Research in Child Health and Brain Development, University of Maryland School of Medicine, Baltimore, USA
- Department of Pharmacology, University of Maryland School of Medicine, Baltimore, MD, 21201, USA
- Department of Biological Sciences, Clemson University, Clemson, SC, 29634, USA
| | - Lillian M Folts
- Center for Epigenetic Research in Child Health and Brain Development, University of Maryland School of Medicine, Baltimore, USA
- Department of Pharmacology, University of Maryland School of Medicine, Baltimore, MD, 21201, USA
- Biomedical Sciences Graduate Program, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, USA
| | - Hannah C Zierden
- Center for Epigenetic Research in Child Health and Brain Development, University of Maryland School of Medicine, Baltimore, USA
- Department of Pharmacology, University of Maryland School of Medicine, Baltimore, MD, 21201, USA
- Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, MD, 20740, USA
| | - Ruth Marx-Rattner
- Center for Epigenetic Research in Child Health and Brain Development, University of Maryland School of Medicine, Baltimore, USA
- Department of Pharmacology, University of Maryland School of Medicine, Baltimore, MD, 21201, USA
| | - Nicolae Adrian Leu
- Department of Biomedical Sciences, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Bridget M Nugent
- Center for Epigenetic Research in Child Health and Brain Development, University of Maryland School of Medicine, Baltimore, USA
- Department of Pharmacology, University of Maryland School of Medicine, Baltimore, MD, 21201, USA
| | - Tracy L Bale
- Center for Epigenetic Research in Child Health and Brain Development, University of Maryland School of Medicine, Baltimore, USA.
- Department of Pharmacology, University of Maryland School of Medicine, Baltimore, MD, 21201, USA.
- University of Colorado School of Medicine, CU Anschutz Medical Campus, 12800 E. 19th Avenue, Aurora, CO, 80045, USA.
- Department of Psychiatry, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, USA.
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Yang Y, Wang W, Weng J, Li H, Ma Y, Liu L, Ma W. Advances in the study of HLA class Ib in maternal-fetal immune tolerance. Front Immunol 2022; 13:976289. [PMID: 36105800 PMCID: PMC9465335 DOI: 10.3389/fimmu.2022.976289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Accepted: 08/09/2022] [Indexed: 12/05/2022] Open
Abstract
The HLA class Ib molecule is an alloantigen that causes transplant rejection on behalf of individual human and plays an important role in maternal-fetal immune tolerance. Early studies on HLA class Ib focused on the mechanism of HLA-G-induced immune escape, but in recent years, studies on the mechanism of HLA-G have deepened and gradually explored the mechanism of HLA-E and HLA-F, which are also HLA class Ib molecules. In the maternal-fetal interface, trophoblast cells express HLA class Ib molecules to protect the fetus from maternal immune cells by binding to inhibitory receptors of decidual immune cells (DICs) and shifting Th1/Th2 balance toward Th2 bias. Further studies on the molecular mechanism of HLA class Ib molecules provide a reference for its application in the field of clinical assisted reproduction.
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Affiliation(s)
- Yiran Yang
- Beijing Area Major Laboratory of Peptide and Small Molecular Drugs, Engineering Research Center of Endogenous Prophylactic of Ministry of Education of China, School of Pharmaceutical Sciences, Capital Medical University, Beijing, China
| | - Wanning Wang
- Beijing Area Major Laboratory of Peptide and Small Molecular Drugs, Engineering Research Center of Endogenous Prophylactic of Ministry of Education of China, School of Pharmaceutical Sciences, Capital Medical University, Beijing, China
| | - Jing Weng
- School of Basic Medical Sciences, Capital Medical University, Beijing, China
- *Correspondence: Jing Weng, ; Lingyan Liu,
| | - Huifang Li
- School of Traditional Chinese Medicine, Capital Medical University, Beijing, China
| | - Yanmin Ma
- Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, China
| | - Lingyan Liu
- Beijing Area Major Laboratory of Peptide and Small Molecular Drugs, Engineering Research Center of Endogenous Prophylactic of Ministry of Education of China, School of Pharmaceutical Sciences, Capital Medical University, Beijing, China
- *Correspondence: Jing Weng, ; Lingyan Liu,
| | - Wei Ma
- School of Basic Medical Sciences, Capital Medical University, Beijing, China
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Takatsuki M, Eguchi S. Clinical liver transplant tolerance: Recent topics. JOURNAL OF HEPATO-BILIARY-PANCREATIC SCIENCES 2021; 29:369-376. [PMID: 34758514 DOI: 10.1002/jhbp.1077] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 08/27/2021] [Accepted: 10/22/2021] [Indexed: 12/11/2022]
Abstract
BACKGROUND Immunosuppression is essential after organ transplantation to prevent severe graft injury due to rejection, but in long-term, transplanted organs are generally accepted with minimal dose of immunosuppression, and adverse effects of it such as renal dysfunction, diabetes and development of malignancies might become to exceed over the benefits in majority of the cases. Accordingly, to achieve the immunologic tolerance has been the ultimate goal in organ transplantation, and the liver has been well recognized as the tolerogenic organ compared to other organs. METHODS We referred the reported studies showing the actual protocol to achieve the immunologic tolerance after clinical liver transplantation. RESULTS Actually, two main procedures as "elective weaning of immunosuppression" and/or "cell therapy" using various immune-related cells have been introduced to induce the immunologic tolerance in clinical liver transplantation. The cell therapy, especially using regulatory T-cell has been reported to achieve definitive immunologic tolerance in living donor liver transplantation. CONCLUSION Although it is still developing, the induction of immunologic tolerance in clinical liver transplantation is realistic. Herein, the current topics of immunologic tolerance in liver transplantation is described.
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Affiliation(s)
- Mitsuhisa Takatsuki
- Department of Digestive and General Surgery, Graduate School of Medicine, University of the Ryukyus, Nishihara, Japan
| | - Susumu Eguchi
- Department of Surgery, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
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