Abstract：
:The site of the murine IgG1 molecule that regulates catabolism has recently been shown to encompass amino acids that are located at the CH2-CH3 domain interface. The CH2 and CH3 domains are connected to each other by a relatively flexible "mini-hinge" region, and flexibility in this region could clearly affect the orientation of the domains with respect to each other. The internal movement of the CH2 domain depends on the absence/presence of the hinge disulphide. The increased mobility of the CH2 domain relative to the CH3 domain in a hinge less IgG or Fc fragment may result in a conformational change at the CH2-CH3 domain interface and alter the accessibility of the residues that are involved in catabolism control. To investigate this possibility, four Fc fragments which differ in the presence/absence of hinge disulphides and hinge sequences have been analysed in both in vivo pharmacokinetic studies and in vitro by limited proteolysis with pepsin. The data show that the presence of hinge disulphide(s) in the Fc fragment results in a longer intravascular half life but a higher susceptibility to pepsin attack. This, taken together with the knowledge that pepsin cleaves close to the CH2-CH3 domain interface, suggests that the longer half life of disulphide linked Fc fragments relative to unlinked fragments may be due to conformational differences in this region of the IgG molecule, and these conformational changes may affect the accessibility of the catabolic site for binding to putative protective Fc receptors.
journal_name
Mol Immunoljournal_title
Molecular immunologyauthors
Kim JK,Tsen MF,Ghetie V,Ward ESdoi
10.1016/0161-5890(95)00019-bsubject
Has Abstractpub_date
1995-05-01 00:00:00pages
467-75issue
7eissn
0161-5890issn
1872-9142pii
016158909500019Bjournal_volume
32pub_type
杂志文章abstract：:Mutations within the 5'-non-coding region of the bcl-6 gene can occur in lymphomas that originate from germinal centers (GCs), as well as in normal memory and GC B cells. Mutations in the p53 gene occur in 50% of human cancers. Since both bcl-6 and p53 can be mutated in certain circumstances, we investigated the accum...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/s0161-5890(02)00117-7
更新日期：2002-11-01 00:00:00
abstract：:Optineurin (Optn) is an adaptor protein with homology to NF-κB essential modulator (NEMO), the regulatory subunit of the IκB kinase (IKK) complex. Dysregulation of Optn has been linked to neurodegenerative, autoimmune and bone diseases. Optn shares a high degree of homology with NEMO, but is not part of the same high-...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/j.molimm.2017.01.027
更新日期：2017-05-01 00:00:00
abstract：:A sheep cDNA library was screened with a human C mu probe, and the complete nucleotide sequence of a 1923 nt cDNA was determined. It contains sequences corresponding to all the exons (VH, DH, JH, CH1, CH2, CH3 and CH4) characteristic of the immunoglobulin mu heavy chain regions. The deduced amino acid sequence shows a...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/0161-5890(92)90120-m
更新日期：1992-07-01 00:00:00
abstract：:The MHC class II transactivator (CIITA) acts in the cell nucleus as the master regulator of MHC class II (MHC II) gene expression. It is important to study CIITA regulation in multiple myeloma since MHC expression is central to ability of myeloma cells to present antigen and to the ability of the immune system to reco...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/j.molimm.2007.01.009
更新日期：2007-04-01 00:00:00
abstract：:Endogenous mouse mammary tumor proviruses (MMTV; Mtv loci) deletes Vbeta6 expressing T cells in the thymus of Mtv-7(+) DBA/2 (H2(d)) mice through negative selection. We found that in Mtv-7(-) BALB/c (H2(d)) mice, Vbeta6 is a dominant V gene used in T cell responses to an 18 amino acid long peptide antigen: EYKEYAEYAEY...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/j.molimm.2009.11.006
更新日期：2010-02-01 00:00:00
abstract：:In humans, the CD4 molecule is expressed on a subset of T-cells and at various levels on myeloid and lymphoid cells. The mechanisms regulating human CD4 gene expression are yet poorly understood. We speculated that the CD4 silencer, which operates in CD8+ T-cells to repress CD4 expression, could be responsible for CD4...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/j.molimm.2006.03.002
更新日期：2007-01-01 00:00:00
abstract：:The objective of this study was to characterize the in vitro and in vivo activity of a novel afucosylated rituximab (BLX-300) expressed in a Lemna aquatic plant-based system free of zoonotic pathogens. The glycosylation of BLX-300 was shown to be homogeneous, composed of a single major N-glycan species without detecta...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/j.molimm.2012.01.001
更新日期：2012-03-01 00:00:00
abstract：:Many biological properties of immune complexes (IC) depend upon their size. Quasi-elastic light scattering (QLS) was used to measure a mean equivalent hydrodynamic radius (Rh) and variance of the distribution of model IC composed of bovine serum albumin (BSA) as antigen (Ag) and combinations of two or three well-chara...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/0161-5890(88)90086-7
更新日期：1988-01-01 00:00:00
abstract：:The developmental regulation of antigen receptor gene transcription and recombination are mediated by cis regulatory elements. At the T cell receptor beta chain locus (TCRbeta), two DNase I hypersensitive sites within the Jbeta2-Cbeta2 intron contained binding sites for NF-kappaB and additional nuclear factors and wer...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/s0161-5890(01)00031-1
更新日期：2001-01-01 00:00:00
abstract：INTRODUCTION:Previous studies have suggested the importance of somatic mutations and arginine, asparagine and lysine residues in the complementarity determining regions (CDRs) of antiphospholipid antibodies (aPL) implicated in the pathogenesis of the antiphospholipid antibody syndrome. The relative contributions of the...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/s0161-5890(03)00100-7
更新日期：2003-09-01 00:00:00
abstract：:Mus m 1.0102 is a member of the mouse Major Urinary Protein family, belonging to the Lipocalins superfamily. Major Urinary Proteins (MUPs) are characterized by highly conserved structural motifs. These include a disulphide bond, involved in protein oxidative folding and protein structure stabilization, and a free cyst...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/j.molimm.2020.01.022
更新日期：2020-04-01 00:00:00
abstract：:Mammalian cells produce inflammatory cytokines and chemokines in response to innate immune signals and their expression is tightly regulated. Chemokine (C-X-C motif) ligand 2 (CXCL2), also known as macrophage inflammatory protein 2-alpha (MIP2-alpha), is an inflammatory chemokine belonging to the CXC chemokine family....
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/j.molimm.2016.11.007
更新日期：2017-01-01 00:00:00
abstract：:The effectiveness of immunotherapy targeting the immune checkpoint PD-L1/PD-1 pathway highlights importance of elucidating the regulatory mechanisms of PD-L1 expression in cancer cells. Previous studies demonstrate that oncogene MYC up-regulates PD-L1 expression in lymphomas. In the present study, we investigated the ...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/j.molimm.2018.07.006
更新日期：2018-09-01 00:00:00
abstract：:Leprosy is a bacterial disease caused by M. leprae. Its clinical spectrum reflects the host's immune response to the M. leprae and provide an ideal model to investigate the host pathogen interaction and immunological dysregulation. Tregs are high in leprosy patients and responsible for immune suppression of the host b...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/j.molimm.2017.01.008
更新日期：2017-03-01 00:00:00
abstract：:The peptide editor HLA-DM (DM) catalyzes the exchange of peptides bound to MHC class II molecules within antigen presenting cells by generating a "peptide-receptive" MHC class II conformation (MHC(receptive)) to which peptides readily bind and rapidly unbind. While recent work has uncovered the determinants of DM reco...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/j.molimm.2009.07.001
更新日期：2009-09-01 00:00:00
abstract：:The membrane anchored ligand ephrinB2 belongs to the broad Eph/ephrin system and is able to activate different Eph receptors. The Eph receptors belong to the huge group of receptor-tyrosine kinases. Eph receptors as well as their corresponding ephrin ligands are cell-membrane attached proteins. Therefore, direct cell-...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/j.molimm.2015.10.009
更新日期：2015-12-01 00:00:00
abstract：:PIM1 is serine/threonine protein kinase that is involved in numerous biological processes. Pulmonary fibrosis (PF) is a chronic pathological result of the dysfunctional repair of lung injury without effective therapeutic treatments. In the current study, we investigated whether PIM1 inhibition would improve bleomycin ...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/j.molimm.2020.06.013
更新日期：2020-09-01 00:00:00
abstract：:Complement factor H (CFH) protein is an inhibitor of the alternative pathway of complement (AP) both in the fluid phase and on the surface of host cells. Mouse and human complement factor H-related (CFHR) proteins also belong to the fH family of plasma glycoproteins. The main goal of the current study was to compare t...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/j.molimm.2014.06.028
更新日期：2014-11-01 00:00:00
abstract：:The Fc region of IgG antibodies is crucial for binding to Fc receptors expressed on the surfaces of various immune leukocytes and eliciting therapeutic effector functions such as clearance of antibody-opsonized tumor cells. Despite abrogated Fc gamma receptor (FcγR) binding and therapeutic effector function in the abs...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/j.molimm.2019.07.007
更新日期：2019-10-01 00:00:00
abstract：:N-Acetylcysteine (NAC) has been widely used as an antioxidant in research, however, it has also been found to reduce the binding of TNF to its receptor independent of its antioxidative role. In this study, we investigated the effect of NAC on NF-kappaB activation. In HeLa cells, Hep3B cells, and A549 cells, DNA-bindin...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/j.molimm.2008.06.012
更新日期：2008-09-01 00:00:00
abstract：:Leishmania infantum pyridoxal kinase (PK) protein was characterized after an immunoproteomics screening performed with the sera from patients suffering visceral leishmaniasis (VL). Since it was recognized by sera of mammalian hosts infected by a viscerotropic Leishmania species, PK could emerge as a new vaccine candid...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/j.molimm.2020.06.010
更新日期：2020-08-01 00:00:00
abstract：:The DNA vaccine based on the glycoprotein gene of Infectious hematopoietic necrosis virus induces a non-specific anti-viral immune response and long-term specific immunity against IHNV. This study characterized gene expression responses associated with the early anti-viral response. Homozygous rainbow trout were injec...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/j.molimm.2005.12.005
更新日期：2006-05-01 00:00:00
abstract：:Hepatitis B virus (HBV) infection afflicts over 350 million people worldwide and is a leading cause of hepatitis, cirrhosis and hepatocellular carcinoma. HBV replicates noncytopathically in hepatocytes, and most of the hepatic injury is caused by the immune response to the virus. While most studies focused on the adap...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/j.molimm.2009.09.022
更新日期：2009-12-01 00:00:00
abstract：:Immunoglobulin heavy chain (Igh) locus rearrangements are controlled in part by an approximately 30 b complex 3' regulatory region located 3' of C alpha: this region contains several enhancers. We report here the comparison of the genomic sequences of the 3' regulatory region and further downstream sequences from mous...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/j.molimm.2004.09.006
更新日期：2005-03-01 00:00:00
abstract：:2-Aminopurine (2-AP) is widely used as an inhibitor for double stranded RNA-dependent protein kinase (PKR). Previously, we reported that 2-AP inhibits Toll-like receptor (TLR) ligand-induced nitric oxide production through the prevention of interferon (IFN)-β production. In this study, we investigated the mechanisms f...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/j.molimm.2012.06.008
更新日期：2012-10-01 00:00:00
abstract：:The hyper-IgE syndrome (HIES) is a rare primary immunodeficiency characterized by a highly elevated serum IgE, recurrent staphylococcal skin abscesses and cyst-forming pneumonia. Non-immunological abnormalities, including a distinctive facial appearance, hyperextensive joints, scoliosis, fracture following minor traum...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/j.molimm.2010.01.010
更新日期：2010-04-01 00:00:00
abstract：:Recent studies demonstrate that tissue microenvironments may regulate development and functions of immune cells including dendritic cells, monocytes and T cells. However, there is no report about functional regulation of innate NK cells by tissue microenvironment. The liver is an organ abundant in NK cells and suscept...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/j.molimm.2008.01.035
更新日期：2008-05-01 00:00:00
abstract：:The interferon (IFN)-inducible p200-protein family includes structurally related murine (for example, p202a, p202b, p204, and Aim2) and human (for example, AIM2 and IFI16) proteins. All proteins in the family share a partially conserved repeat of 200-amino acid residues (also called HIN-200 domain) in the C-terminus. ...
journal_title：Molecular immunology
pub_type： 杂志文章,评审
doi：10.1016/j.molimm.2011.11.004
更新日期：2012-01-01 00:00:00
abstract：:V(D)J recombination is a mechanism peculiar to the somatic rearrangement of antigen receptor genes. It requires both expression of the RAG-1 and RAG-2 recombinases and accessibility of the substrate to its recombinase and post-cleavage/DNA repair stage. TCR revision is a genetic correction mechanism that changes T cel...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/j.molimm.2007.06.153
更新日期：2008-01-01 00:00:00
abstract：:Anti-DNP activity was found in normal human immunoglobulins with average affinities (10(4)-10(6) l/mole) and frequencies (15-2%) that correlate well with those expected from multispecific binding sites. ...
journal_title：Molecular immunology
pub_type： 杂志文章
doi：10.1016/0161-5890(84)90143-3
更新日期：1984-10-01 00:00:00
