Abstract:
:Stimulation of cells of the rat basophilic leukemia line RBL-2H3, which are used as a model in biochemical studies of mast cells, by antigen or by the calcium ionophore ionomycin, are known to cause secretion of mediators of inflammation. These stimuli have now been found to cause a decrease in the cells' cytosolic pH. This acidification process was monitored by the fluorescent indicator 2',7'-bis (carboxyethyl)-5(6)-carboxyfluorescein (BCECF) introduced into these cells. The antigen induced acidification was the result of specific aggregation of membrane residing IgE, reached values up to 0.03 pH units and required the presence of sodium and calcium ions in the incubation medium. It was amiloride resistant but was blocked by the metabolic inhibitor deoxyglucose. Ionomycin caused a dose dependent decrease in cytosolic pH which was also sensitive to the pH of the extracellular medium. The acidification reached more than 0.1 pH units at optimal, non-cytotoxic, doses of ionomycin (1 microM) and decreased markedly as the medium pH increased from 7.0 to 8.0. The antigen and ionophore induced cytosolic acidification processes are interpreted as being the result of the increased concns of free cytosolic calcium ions rather than the effect of direct activation of a sodium-proton exchanger. Further investigation of this process is in progress.
journal_name
Mol Immunoljournal_title
Molecular immunologyauthors
Gertler R,Pecht Idoi
10.1016/0161-5890(88)90142-3subject
Has Abstractpub_date
1988-11-01 00:00:00pages
1087-92issue
11eissn
0161-5890issn
1872-9142journal_volume
25pub_type
杂志文章abstract::The accuracy of calibrated immunoassays for measuring antibody concentration was analysed from a theoretical perspective. The study shows that there are theoretical limits on the accuracy of antibody immunoassays, which are determined by the affinity of the standard and unknown antibodies and the conditions chosen for...
journal_title:Molecular immunology
pub_type: 杂志文章
doi:10.1016/0161-5890(91)90115-z
更新日期:1991-07-01 00:00:00
abstract::The globular C1q heterotrimer is a subunit of the C1 complement factor. Binding of the C1q subunit to the constant (Fc) part of antibody molecules is a first step and key event of complement activation. Although three-dimensional structures of C1q and antibody Fc subunits have been determined experimentally no atomic ...
journal_title:Molecular immunology
pub_type: 杂志文章
doi:10.1016/j.molimm.2012.02.111
更新日期:2012-05-01 00:00:00
abstract::Infectious salmon anaemia virus (ISAV) is a marine orthomyxovirus of significant interest not only as a cause of a fatal disease of farmed Atlantic salmon resulting in severe economic losses to the aquaculture industry, but also as the only poikilothermic orthomyxovirus. ISAV targets vascular endothelial cells and mac...
journal_title:Molecular immunology
pub_type: 杂志文章
doi:10.1016/j.molimm.2009.06.015
更新日期:2009-09-01 00:00:00
abstract::Immature dendritic cells (iDCs) are bone marrow-derived professional antigen-presenting cells, exhibit very low levels of the co-stimulatory molecules CD80 (B7-1), CD86 (B7-2), and CD40 and major histocompatibility complex (MHC) class II and play a critical role in triggering antigen-specific immunotolerance. The enzy...
journal_title:Molecular immunology
pub_type: 杂志文章
doi:10.1016/j.molimm.2016.09.005
更新日期:2016-11-01 00:00:00
abstract::To investigate the IL-6/IL-6 receptor system, we obtained five murine monoclonal antibodies against human IL-6, which neutralize its biological activity. We classified them into two groups (Type I mAb and Type II mAb) according to the epitopes they recognized. These two types of antibodies showed no difference in the ...
journal_title:Molecular immunology
pub_type: 杂志文章
doi:10.1016/0161-5890(91)90001-z
更新日期:1991-11-01 00:00:00
abstract::The generation of T cell receptor (TCR) sequence diversity can produce 'forbidden' clones able to recognize self-antigens. Here, the structure of the complex between a myelin basic protein peptide (MBP85-99), human leukocyte antigen (HLA)-DR2 (DRB1*1501/DRA) and TCR-Ob.2F3, the dominant autoimmune clone obtained from ...
journal_title:Molecular immunology
pub_type: 杂志文章
doi:10.1016/j.molimm.2010.07.010
更新日期:2010-11-01 00:00:00
abstract::Four different proteases were screened for their capability of selectively digesting murine monoclonal IgGl to obtain active F(ab)2. For the screening, a series of five different mouse monoclonal antibodies (IgGl, k) was used, recognizing different tumor-associated antigens and currently used for radioimmunoimaging st...
journal_title:Molecular immunology
pub_type: 杂志文章
doi:10.1016/0161-5890(91)90088-2
更新日期:1991-01-01 00:00:00
abstract::Intravenous drug use has become the principal route of hepatitis C virus (HCV) transmission due to the sharing of infected needles. In this study, we analyzed the distribution of HLA-KIR genotypes among 160 Puerto Rican intravenous drug users (IDUs) with HCV infection and 92 HCV-negative Puerto Rican IDUs. We found a ...
journal_title:Molecular immunology
pub_type: 杂志文章
doi:10.1016/j.molimm.2009.05.014
更新日期:2009-08-01 00:00:00
abstract::A recent report indicated that T200 molecules interact with elements of the cytoskeleton in BW5147 T lymphoma cells. We have confirmed the cytoskeletal association of T200 by examining nonionic detergent-soluble and detergent-insoluble fractions of murine T cell tumor cell lines, cloned cytotoxic T lymphocyte lines, a...
journal_title:Molecular immunology
pub_type: 杂志文章
doi:10.1016/0161-5890(89)90111-9
更新日期:1989-10-01 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 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::Asthma is a chronic respiratory disease which is susceptible to children and causes great harm to them. Recently, Interferon-related developmental regulator 1 (IFRD1) was proved to be participant in regulating lung diseases, and its abnormal expression was shown in pathological airway tissues. Our study aimed to demon...
journal_title:Molecular immunology
pub_type: 杂志文章
doi:10.1016/j.molimm.2020.09.010
更新日期:2020-11-01 00:00:00
abstract::Many infections are associated with diabetes, as the ability of the body to fight pathogens is impaired. Recently, altered levels of defensins and polymorphism in Toll-like receptors (TLRs), two crucial components of the innate immune system, have been associated with diabetes. To study the functionality of the innate...
journal_title:Molecular immunology
pub_type: 杂志文章
doi:10.1016/j.molimm.2006.04.009
更新日期:2007-02-01 00:00:00
abstract::CD4 T cells play an important role in the immune response against hepatitis B virus (HBV) infection. Woodchucks represent an excellent animal model to study HBV infection. In this study, we characterized the cDNA sequence of woodchuck CD4 (wCD4). The deduced wCD4 protein has four extracellular immunoglobulin-like doma...
journal_title:Molecular immunology
pub_type: 杂志文章
doi:10.1016/j.molimm.2013.04.006
更新日期:2013-11-01 00:00:00
abstract::Increasing evidence has demonstrated that the epithelial cells in the lung play crucial roles in regulating certain inflammatory responses by modulating Wnt signaling during microbial infection. However, the anti-microbial functions of Wnt signaling in alveolar epithelial cells remain elusive. In this report, we show ...
journal_title:Molecular immunology
pub_type: 杂志文章
doi:10.1016/j.molimm.2014.02.002
更新日期:2014-06-01 00:00:00
abstract::Rabbits hyperimmunized with fluorescyl-conjugated KLH exhibited bound ligand associated with a high affinity circulating IgG anti-fluorescein population. After cessation of immunogen administration the liganded complexes were eventually spontaneously cleared from the circulation. Individual rabbits synthesized autolog...
journal_title:Molecular immunology
pub_type: 杂志文章
doi:10.1016/0161-5890(92)90105-7
更新日期:1992-02-01 00:00:00
abstract::When mouse dendritic cells (DCs) are isolated from tissues, purified and placed in a nutritive culture they die more rapidly than would be expected from their normal turnover in vivo. This can distort culture assays of DC function. We therefore tested several approaches to prolonging DC survival in culture. Of several...
journal_title:Molecular immunology
pub_type: 杂志文章
doi:10.1016/j.molimm.2014.07.011
更新日期:2015-02-01 00:00:00
abstract::The complement (C) inflammatory cascade is part of the phylogenetically ancient innate immune response and is crucial to our natural ability to ward off infection. It has three critical physiologic activities: (i) defending against microbial infections by triggering the generation of a membranolytic complex (C5b9 comp...
journal_title:Molecular immunology
pub_type: 杂志文章,评审
doi:10.1016/j.molimm.2004.06.011
更新日期:2004-11-01 00:00:00
abstract::In Drosophila the synthesis of antimicrobial peptides in response to microbial infections is under the control of the Toll and immune deficiency (Imd) signaling pathways. The Toll signaling pathway responds mainly to Gram-positive bacterial and fungal infection while the Imd pathway mediates the response to Gram-negat...
journal_title:Molecular immunology
pub_type: 杂志文章
doi:10.1016/j.molimm.2008.01.015
更新日期:2008-05-01 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::The structural and functional integrity of the cell is largely maintained by protein-protein interactions. Recently, we demonstrated that multiple antigenic peptides (MAPs) constructed from 60 kDa Ro sequence could be used to show intramolecular and intermolecular protein-protein interaction within the 60 kDa Ro ribon...
journal_title:Molecular immunology
pub_type: 杂志文章
doi:10.1016/j.molimm.2004.03.036
更新日期:2004-07-01 00:00:00
abstract::Salmonella enterica serovar Typhimurium (S. Typhimurium) changes the structure of its lipopolysaccharide (LPS) in response to the environment. The two main LPS variants found in S. Typhimurium correspond to LPS with a hepta-acylated lipid A (LPS 430) and LPS with modified phosphate groups on its lipid A (LPS 435). We ...
journal_title:Molecular immunology
pub_type: 杂志文章
doi:10.1016/j.molimm.2019.03.003
更新日期:2019-07-01 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::Emerging evidence has indicated that vascular endothelial cells (ECs) not only form the barrier between blood and the vessel wall but also serve as conditional innate immune cells. Our previous study found that SIRT1, a class III histone deacetylase, inhibits the inflammatory response in ECs. Recent studies revealed t...
journal_title:Molecular immunology
pub_type: 杂志文章
doi:10.1016/j.molimm.2016.07.018
更新日期:2016-09-01 00:00:00
abstract::Ectopic follicles are non-encapsulated organized lymphoid structures that form at sites of inflammation and presumably contribute to the activation and differentiation of cells with autoreactive potential within target tissues. As such, directed targeting of ectopic follicles in settings of autoimmunity may provide a ...
journal_title:Molecular immunology
pub_type: 杂志文章
doi:10.1016/j.molimm.2014.05.006
更新日期:2014-12-01 00:00:00
abstract::Bifunctional antigens composed of one L-tyrosine-p-azobenzenearsonate (Tyr-ABA) carrier epitope and one dinitrophenyl (DNP) haptenic epitope separated by 6-aminocaproyl or polyprolyl spacers induced weak IgM anti-DNP plaque-forming cell (PFC) responses in the spleens of mice immunized intraperitoneally, without detect...
journal_title:Molecular immunology
pub_type: 杂志文章
doi:10.1016/0161-5890(84)90069-5
更新日期:1984-06-01 00:00:00
abstract::The binding of CD40 ligand on activated T cells to CD40 on resting B cells induces the expression of costimulatory molecules B7-1 (CD80) and B7-2 (CD86). The induction of B7 molecules by CD40 ligand-CD40 interaction represents a critical step in rendering B cells competent for antigen presentation. The CBA/N mouse has...
journal_title:Molecular immunology
pub_type: 杂志文章
doi:10.1016/0161-5890(96)00005-3
更新日期:1996-04-01 00:00:00
abstract::The anti-inflammatory cytokine IL-10 is a key modulator of immune responses. A better understanding of the regulation of this cytokine offers the possibility of tipping the balance of the immune response toward either tolerance, or enhanced immune responses. Histone deacetylases (HDACs) have been widely described as n...
journal_title:Molecular immunology
pub_type: 杂志文章
doi:10.1016/j.molimm.2014.02.019
更新日期:2014-07-01 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::Platelet Endothelial Cell Adhesion Molecule-1 (PECAM-1/CD31) is an immunoglobulin (Ig)-immunoreceptor tyrosine based inhibitory motif (Ig-ITIM) superfamily member that recruits and activates protein-tyrosine phosphatases, predominantly SHP-2 and to a lesser extent, SHP-1. Previously, we have shown that deletion of PEC...
journal_title:Molecular immunology
pub_type: 杂志文章
doi:10.1016/j.molimm.2007.09.024
更新日期:2008-03-01 00:00:00