Abstract：
:The Class II Transactivator (CIITA) is the master regulator of Major Histocompatibility Class II (MHC II) genes. Transcription of CIITA through the IFN-γ inducible CIITA promoter IV (CIITA pIV) during activation is characterized by a decrease in trimethylation of histone H3 lysine 27 (H3K27me3), catalyzed by the histone methyltransferase Enhancer of Zeste Homolog 2 (EZH2). While EZH2 is the known catalytic subunit of the Polycomb Repressive Complex 2 (PRC2) and is present at the inactive CIITA pIV, the mechanism of PRC2 recruitment to mammalian promoters remains unknown. Here we identify two DNA-binding proteins, which interact with and regulate PRC2 recruitment to CIITA pIV. We demonstrate Yin Yang 1 (YY1) and Jumonji domain containing protein 2 (JARID2) are binding partners along with EZH2 in mammalian cells. Upon IFN-γ stimulation, YY1 dissociates from CIITA pIV while JARID2 binding to CIITA pIV increases, suggesting novel roles for these proteins in regulating expression of CIITA pIV. Knockdown of YY1 and JARID2 yields decreased binding of EZH2 and H3K27me3 at CIITA pIV, suggesting important roles for YY1 and JARID2 at CIITA pIV. JARID2 knockdown also results in significantly elevated levels of CIITA mRNA upon IFN-γ stimulation. This study is the first to identify novel roles of YY1 and JARID2 in the epigenetic regulation of the CIITA pIV by recruitment of PRC2. Our observations indicate the importance of JARID2 in CIITA pIV silencing, and also provide a novel YY1-JARID2-PRC2 regulatory complex as a possible explanation of differential PRC2 recruitment at inducible versus permanently silenced genes.
journal_name
Mol Immunoljournal_title
Molecular immunologyauthors
Boyd NH,Morgan JE,Greer SFdoi
10.1016/j.molimm.2015.08.003subject
Has Abstractpub_date
2015-10-01 00:00:00pages
482-91issue
2 Pt Beissn
0161-5890issn
1872-9142pii
S0161-5890(15)30052-3journal_volume
67pub_type
杂志文章abstract：:A number of studies have showed that High mobility group box-1 (HMGB1), which played key role in inflammation activation by triggering the toll like receptor 4 (TLR4) signaling axis in hepatic fibrogenesis, may share similar inflammation stimulating mechanism with LPS. Herein, we introduced a recently established anti...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/j.molimm.2015.10.018
更新日期：2016-01-01 00:00:00
abstract：:We have previously identified four linear IgE epitopes on Jun a 1, the dominant allergen in mountain cedar pollen, and mapped these to the surfaces of a molecular model and to the crystal structure of this glycoprotein. The aim of the present study was to determine if Jun a 1 also displays conformational IgE epitopes....
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/j.molimm.2005.12.001
更新日期：2007-04-01 00:00:00
abstract：:CD1 molecules are MHC-unlinked class Ib molecules consisting of classical (human CD 1a-c) and non-classical subsets (human CD1d and murine CD1). The characterization of non-classical subsets of CD1 is limited due to the lack of reagents. In this study, we have generated two new anti-mouse CD1 monoclonal antibodies, 3H...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/s0161-5890(98)00055-8
更新日期：1998-06-01 00:00:00
abstract：:T follicular helper (Tfh) cells, especially programmed cell death protein 1 (PD-1)+ Tfh cells, exert important functions in the normal immune response. The purpose of this study was to determine the frequency of different subsets of PD-1+ Tfh cells and their functional effects in adult patients with minimal change dis...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/j.molimm.2017.12.020
更新日期：2018-02-01 00:00:00
abstract：:Because of its lethal effects, ease of preparation, and ability to be delivered by aerosolization, ricin has been developed as a lethal weapon by various terrorist groups. When introduced into the pulmonary system of rodents, ricin causes pathological changes in the lung that are known to occur in acute respiratory di...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/j.molimm.2006.10.025
更新日期：2007-04-01 00:00:00
abstract：:The host response to intravascular, Gram-negative bacteria includes profound immunologic, hematologic and physiologic changes. Numerous host defense mechanisms are activated by Gram-negative bacteria, including the complement system. Activation of the complement system leads to cleavage of C5 with subsequent generatio...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/j.molimm.2007.10.037
更新日期：2008-04-01 00:00:00
abstract：:Immunoglobulins (Ig) require correct folding and assembly of both heavy (H) and light (L) chains to form a functional H2L2 dimer that is secreted from plasma cells. This process is dependent upon the endoplasmic reticulum (ER) chaperone BiP, which targets improperly, folded or assembled Ig molecules for degradation. W...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/j.molimm.2004.11.015
更新日期：2005-05-01 00:00:00
abstract：:The sphingosine-1-phosphate analogue FTY720 is known to alter migration and homing of lymphocytes via sphingosine-1-phosphate receptors. However, several studies indicate that its mode of action is more complex and that FTY720 may also directly influence cytokine effector functions. Therefore, we studied the effect of...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/j.molimm.2007.02.026
更新日期：2007-07-01 00:00:00
abstract：:When 5-fluorouracil (5-FU) resistant bone marrow (BM) cells are depleted of B-cells and then cultured in insert chambers [separated from a layer of adherent BM (aBM) cells by a nucleopore membrane], no mature, lipopolysaccharide (LPS) reactive B-cells are formed. Factors acting on B-cell precursors are not produced un...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/0161-5890(88)90146-0
更新日期：1988-11-01 00:00:00
abstract：:The murine pre-B cell line R2-bfl, which can be induced to differentiate in vitro, was used to study germline transcription of variable regions of the light chain loci. RNA from these cells was subjected to a 3'-RACE and germline transcripts from 17 individual Vkappa gene segments belonging to 12 Vkappa families were ...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/s0161-5890(03)00226-8
更新日期：2003-12-01 00:00:00
abstract：:Antigens related to the carcinoembryonic antigen (CEA) were isolated from normal human plasma by perchloric acid extraction, gel permeation chromatography and immunoaffinity chromatography using a monoclonal antibody with broad specificity and high affinity. The antigens were separated by SDS-polyacrylamide gel electr...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/0161-5890(85)90046-x
更新日期：1985-11-01 00:00:00
abstract：:Following measles virus (MV) infection, viral peptides are presented to CTL by MHC class I molecules on infected antigen presenting cells at widely different epitope densities. Whereas three MV epitopes (MV-M(211-219), MV-F(438-446) and MV-H(30-38)) derived from different structural proteins occur at regular densities...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/s0161-5890(02)00204-3
更新日期：2003-01-01 00:00:00
abstract：:Gene regulatory network (GRN) subcircuits have been described for cell fate progressions in animal development. The hallmark of these subcircuits is the integration of promoters, and positive- and negative-acting promoter binding proteins, such that an alteration in function of any one member of the defined subcircuit...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/j.molimm.2008.07.035
更新日期：2009-02-01 00:00:00
abstract：:Structurally diverse dextrans from Leuconostoc mesenteroides and related bacteria have been used extensively in fundamental immunochemical studies such as induction and characterization of anti-dextran antibodies, as well as in studies of their interaction with pneumococcal antisera, normal bovine serum, concanavalin ...
journal_title：Molecular immunology
pub_type： 杂志文章,评审
doi：10.1016/0161-5890(86)90131-8
更新日期：1986-09-01 00:00:00
abstract：:Human IgE against helminths is a normal component of the whole protective response elicitesd during infection, when specific IgE to a great number of antigens is produced; however, few of those IgE binding components are actually allergens. In general, considering the strong Th2/IgE responses during helminth infection...
journal_title：Molecular immunology
pub_type： 杂志文章,评审
doi：10.1016/j.molimm.2018.03.014
更新日期：2018-08-01 00:00:00
abstract：:Chagas' disease, caused by Trypanosoma cruzi, is an inflammatory disorder leading to chronic Chagas cardiomyopathy (CCC). Only one third of T. cruzi-infected individuals progress to CCC while the others are considered asymptomatic (ASY). The human inhibitory kappaB-like gene (IKBL/NFKBIL1), homologous to the IkappaB f...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/j.molimm.2007.04.015
更新日期：2008-01-01 00:00:00
abstract：:Inhibition of C5a by antibodies has been demonstrated to dramatically improve survival in various sepsis models in mice and rats. The structural basis of C5a mediated bioactivity and C5a antibody mediated neutralization are of interesting to be investigated. In the previous study, we obtained a novel functional mouse ...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/j.molimm.2011.03.013
更新日期：2011-07-01 00:00:00
abstract：:The transglutaminase 2 (TG2) is one of the enigmatic enzymes with important functional diversity. It plays an important role in several pathologies such as celiac disease (CD). In patients with active CD, the abnormal retrotranscytosis of IgA/gliadin complexes is mediated by Transferrin Receptor 1 (TfR1). This triad a...
journal_title：Molecular immunology
pub_type： 杂志文章,评审
doi：10.1016/j.molimm.2020.02.019
更新日期：2020-05-01 00:00:00
abstract：:Purified mRNA's encoding the HLA-A and -B antigen heavy chains or beta 2-microglobulin were prepared from human B lymphoid cells by positive hybridization selection procedures. The role of chain association in the biosynthesis and intracellular transport of HLA-A and -B antigens was investigated by injecting these mRN...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/0161-5890(86)90115-x
更新日期：1986-05-01 00:00:00
abstract：:Low molecular weight hemorrhagins were purified from crude Bothrops atrox snake venom by gel filtration followed by ionic strength chromatography. The protein fractions obtained, designated HI-1 to HI-8, contained proteins with molecular masses lower than 30 kDa. HI-5, the most representative among of these fractions,...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/j.molimm.2003.11.032
更新日期：2004-03-01 00:00:00
abstract：:Using the non-crossreactive mAb MRC-OX3 and MRC-OX6, two serologically distinct RT1.B-specific (I-A equivalent) alpha, beta heterodimers have previously been described by us as residing at the cell surface of LEW rat spleen cells. The two-chain elements were suggested to represent stable conformation isomers, diverged...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/0161-5890(89)90099-0
更新日期：1989-02-01 00:00:00
abstract：:Spondyloarthritis is the second most common form of chronic inflammatory arthritis and a unique hallmark of the disease is pathologic new bone formation. Several cytokine pathways have been genetically associated with ankylosing spondylitis (AS), the prototypic subtype of SpA, and additional evidence from human and an...
journal_title：Molecular immunology
pub_type： 杂志文章,评审
doi：10.1016/j.molimm.2013.07.016
更新日期：2014-01-01 00:00:00
abstract：:The antigenic structural features of alpha-lactalbumin have been investigated using a radioimmunoassay, peptide inhibition of the quantitative precipitin reaction, and by immunodiffusion analysis after chemical modification of the molecule. Antigenic activity (in rabbits) was localized to several peptic fragments and ...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/0161-5890(82)90192-4
更新日期：1982-11-01 00:00:00
abstract：:A computerized method for predicting the locations of protein antigenic determinants is presented, which requires only the amino acid sequence of a protein, and no other information. This procedure has been used to predict the major antigenic determinant of the hepatitis B surface antigen, as well as antigenic sites o...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/0161-5890(83)90029-9
更新日期：1983-04-01 00:00:00
abstract：:Tumors exploit immunoregulatory checkpoints that serve to attenuate T cell responses as a means of circumventing immunologic rejection. Programmed death ligand 1 (PD-L1) is a negative regulator of T cell function and is frequently expressed by solid tumors. By engaging programmed death 1 (PD-1) on activated T cells, P...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/j.molimm.2012.03.023
更新日期：2012-07-01 00:00:00
abstract：:The discovery of a human myeloma protein comprising a kappa L-chain with an increased mol. wt of 30,000) (Bouvet et. al., 1980) prompted investigations on the incidence of such heavier L-chains among other human myeloma proteins. In 105 samples examined, 34 were found to have L-chains heavier than normal (23,000-24,00...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/0161-5890(83)90021-4
更新日期：1983-04-01 00:00:00
abstract：:Vitamin D has been recommended as an immune modulator in recent years, in addition to regulating calcium-phosphorous-bone metabolism. Clinical studies on organ transplantation found that vitamin D sufficiency patients were less likely to develop acute cellular rejection within one year after transplantation compared t...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/j.molimm.2017.09.006
更新日期：2017-11-01 00:00:00
abstract：:Bothropasin is a hemorrhagic snake venom metalloproteinase (SVMP) from Bothrops jararaca venom, the snake responsible for most bites in Southeastern Brazil. SVMPs, such as bothropasin, are involved in the main bothropic envenoming symptoms, which include hemorrhage, inflammation, necrosis and blood coagulation deficie...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/j.molimm.2018.10.019
更新日期：2018-12-01 00:00:00
abstract：:MAIT cells are innate-like T cells that are enriched in mucosal sites and tissues including adipose tissue and liver. They play an important role in immunity against microbial pathogens. Recently, it has been reported that MAIT cells could also be important in metabolic diseases and can be involved in setting up and m...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/j.molimm.2020.12.014
更新日期：2021-02-01 00:00:00
abstract：:The present study reports the characterization of Ls-Stylicin1, a novel antimicrobial peptide from the penaeid shrimp, Litopenaeus stylirostris. The predicted mature peptide of 82 residues is negatively charged (theoretical pI=5.0) and characterized by a proline-rich N-terminal region and a C-terminal region containin...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/j.molimm.2009.12.007
更新日期：2010-03-01 00:00:00
