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Jimmunol.1300714.Full.Pdf Regulation of Dendritic Cell Differentiation in Bone Marrow during Emergency Myelopoiesis This information is current as Hao Liu, Jie Zhou, Pingyan Cheng, Indu Ramachandran, of September 29, 2021. Yulia Nefedova and Dmitry I. Gabrilovich J Immunol published online 5 July 2013 http://www.jimmunol.org/content/early/2013/07/04/jimmun ol.1300714 Downloaded from Supplementary http://www.jimmunol.org/content/suppl/2013/07/05/jimmunol.130071 Material 4.DC1 http://www.jimmunol.org/ Why The JI? Submit online. • Rapid Reviews! 30 days* from submission to initial decision • No Triage! Every submission reviewed by practicing scientists • Fast Publication! 4 weeks from acceptance to publication by guest on September 29, 2021 *average Subscription Information about subscribing to The Journal of Immunology is online at: http://jimmunol.org/subscription Permissions Submit copyright permission requests at: http://www.aai.org/About/Publications/JI/copyright.html Email Alerts Receive free email-alerts when new articles cite this article. Sign up at: http://jimmunol.org/alerts The Journal of Immunology is published twice each month by The American Association of Immunologists, Inc., 1451 Rockville Pike, Suite 650, Rockville, MD 20852 Copyright © 2013 by The American Association of Immunologists, Inc. All rights reserved. Print ISSN: 0022-1767 Online ISSN: 1550-6606. Published July 5, 2013, doi:10.4049/jimmunol.1300714 The Journal of Immunology Regulation of Dendritic Cell Differentiation in Bone Marrow during Emergency Myelopoiesis Hao Liu,1 Jie Zhou,1,2 Pingyan Cheng, Indu Ramachandran,3 Yulia Nefedova,3 and Dmitry I. Gabrilovich3 Although accumulation of dendritic cell (DC) precursors occurs in bone marrow, the terminal differentiation of these cells takes place outside bone marrow. The signaling, regulating this process, remains poorly understood. We demonstrated that this process could be differentially regulated by Notch ligands: Jagged-1 (Jag1) and Delta-like ligand 1 (Dll1). In contrast to Dll1, Jag1, in vitro and during induced myelopoiesis in vivo, prevented DC differentiation by promoting the accumulation of their precursors. Although both ligands activated Notch in hematopoietic progenitor cells, they had an opposite effect on Wnt signaling. Dll1 activated Wnt pathways, whereas Jag1 inhibited it via downregulation of the expression of the Wnt receptors Frizzled (Fzd). Jag1 suppressed fzd expression by retaining histone deacetylase 1 in the complex with the transcription factor CSL/CBF-1 on the fzd promoter. Our Downloaded from results suggest that DC differentiation, during induced myelopoiesis, can be regulated by the nature of the Notch ligand expressed on adjacent stroma cells. The Journal of Immunology, 2013, 191: 000–000. endritic cells (DCs) are professional APCs critically played by different Notch ligands in defining the biological effects important for the induction of immune responses (1, 2). of Notch. At present, two major Notch ligand families, Delta (Dll1, D The regulation of DC differentiation is a complex, spa- Dll3, and Dll4) and Jagged (Jag1 and Jag2), have been described http://www.jimmunol.org/ tially controlled process. Although it is initiated in bone marrow in mammals (6). Although these ligands activate Notch signaling, (BM), most DCs became terminally differentiated cells in the in recent years, evidence has emerged of the contrasting effects of peripheral lymphoid organs or tissues. There are only a few dif- Delta and Jagged on different cells (7–13). However, the mecha- ferentiated, functionally competent DCs in BM (3). This plays an nisms these effects remain largely unclear. important biological role by limiting the possible inflammatory re- It is known that the Notch pathway is involved in the differ- action in BM. The molecular mechanisms regulating this process entiation and function of DCs. However, its role remains contro- remained largely unclear. versial. Most of the studies with “gain-of-function” experiments DC differentiation in BM is controlled by a complex network of have demonstrated an upregulation of DC differentiation, whereas soluble factors and cell surface–bound molecules. Among the many studies with “loss of function,” using knockout (KO) mice, by guest on September 29, 2021 latter, the Notch family of transcriptional regulators plays a major showed either a lack of the effect or an inhibition of DC differ- role. Notch signaling is initiated by the binding of the Notch re- entiation (reviewed in Ref. 14). Dll1 was shown to potently pro- ceptor to specific ligands that result in the proteolytic cleavage of mote DC differentiation (11, 15, 16), whereas Jag1 prevented the intracellular domain (ICN), followed by the ICN translocation the terminal DC differentiationinvitrobyinducinganaccu- to the nucleus, where it interacts with the transcriptional repressor mulation of immature myeloid cells (IMCs) and DC precursors CSL/CBF-1 (4, 5). One of the most puzzling questions is the role (11). The mechanism of such an opposite effect remained un- clear. The goal of this study was to understand the mechanisms that prevent DC differentiation in BM and possible role of Jag1 Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, in this process. Tampa, FL 33612 1H.L. and J.Z. contributed equally to this work. Materials and Methods 2Current address: Institute of Human Virology, Zhongshan School of Medicine, Sun Mice Yat-Sen University, Guangzhou, China. 3 All mouse experiments were approved by the University of South Florida Current address: Wistar Institute, Philadelphia, PA. Institutional Animal Care and Use Committee. Female C57BL/6 mice (aged Received for publication March 15, 2013. Accepted for publication June 6, 2013. 6–8 wk) were obtained from the National Cancer Institute. Mx1-Cre mice b flox+ This work was supported by National Institutes of Health Grants CA141438 (to D.I.G.). (mouse strain number 003556), -catenin mice (mouse strain number + and CA130923 (to Y.N.) 004152 on C57BL/6 background), and CD45.1 congenic mice (B6.SJL- PtrcaPep3b/BoyJ) were purchased from The Jackson Laboratory. Jagged- Address correspondence and reprint requests to Dr. Dmitry I. Gabrilovich at the 1flox+ mice were provided by Dr. J. Lewis (London Research Institute, current address: Wistar Institute, Room 118C, 3601 Spruce Street, Philadelphia, PA b 19104-4265. E-mail address: [email protected] Cancer Research UK, London, U.K.) (10). The conditional -cat or Jag1 KO mice were generated by crossing homozygous floxed b-cat or Jag1 mice with The online version of this article contains supplemental material. Mx1-Cre mice, and the offspring carrying a floxed b-cat or Jag1 allele and Abbreviations used in this article: BM, bone marrow; BMS, stroma from bone mar- Mx1-Cre were backcrossed to the homozygous floxed b-cat or Jag1 mice. row; ChIP, chromatin immunoprecipitation; DC, dendritic cell; Dll, Delta-like ligand; Homozygous floxed b-cat or Jag1 mice carrying Mx1-Cre transgene were Fzd, Frizzled; HDAC, histone deacetylase; HGT, hydrodynamic gene transfer; HPC, selected and were referred to as b-catfl/flCre+/2 or Jag1fl/flCre+/2 mice. hematopoietic progenitor cell; ICN, intracellular domain; IMC, immature myeloid Jag1fl/flCre/2 or b-catfl/flCre2/2 mice were used as controls. To induce the cell; Jag, Jagged; KO, knockout; LEF, lymphoid enhancer factor; LN, lymph node; b m MF, macrophage; PB, peripheral blood; poly(I:C), polyinosinic:polycytidylic acid; -cat or Jag1 deletion, 250 g polyinosinic:polycytidylic acid [poly(I:C)] siRNA, small interfering RNA; SPL, spleen; SPS, spleen from stroma; TCF, T cell were injected i.p. every other day for three or five times. Mice were used factor; TSA, trichostatin A; WT, wild-type. within 3 wk after their last poly(I:C) injection. For adoptive transfer experiments, Jag1fl/fl mice were further backcrossed for eight generations Copyright Ó 2013 by The American Association of Immunologists, Inc. 0022-1767/13/$16.00 with C57BL/6 mice. www.jimmunol.org/cgi/doi/10.4049/jimmunol.1300714 2 DCs, Notch, AND EMERGENCY MYELOPOIESIS Reagents cation of endogenous cyclophilin or hprt was used as an internal control. Primers sequence was reported previously (18). The analysis of gene ex- Abs against mouse I-A/E, CD11b, CD86 (B7-2), CD45, CD45.1, CD11c, pression by immunoblotting was performed as described previously (11). Gr1, B220, and isotype control Abs were obtained from BD Pharmingen For immunoprecipitation, 500 mg precleared cell lysate was incubated with (San Diego, CA). Siglec H, DEC-205, and DCIR-2 (33D1) Abs were from specific Ab for overnight and the Ag–Ab complex was precipitated by eBioscience (San Diego, CA). F4/80 Ab was purchased from Serotec using protein A/G–agarose beads (Santa Cruz Biotechnology, Dallas, TX) (Raleigh, NC). Recombinant murine GM-CSF and IL-4 were obtained and then subjected to electrophoresis in 8% NaDodSO4-polyacrylamide from Research Diagnostics (Flanders, NJ), and IL-3, FLT-3, M-CSF, gels. The specific bands were visualized by an ECL detection kit (Amer- a recombinant human cytokines GM-CSF, TNF- , and mouse Wnt3a were sham Life Sciences, Arlington Heights, IL). obtained from R&D Systems (Minneapolis, MN). Jagged-IgG was from Alexis Biochemical. SB216763, human IgG, and anti-human IgG were Chromatin immunoprecipitation assay from Sigma-Aldrich (St. Louis, MO). b-Catenin, Jagged-1, and histone deacetylases (HDACs) 1, 2, 5, and 7 Abs were from Cell Signaling Tech- Chromatin immunoprecipitation (ChIP) assay was performed with the b reagents and protocol
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