Abstract:
:An immunoglobulin M (IgM) monoclonal antibody, My43, specific for IgA Fc receptor (Fc alpha R) on human monocytes, bound to human polymorphonuclear neutrophils (PMNs) and inhibited their ability to bind IgA but not IgG. It was observed that the PMN oxidative burst was induced by both polymeric IgA and aggregated IgG, whereas IgM was without effect. The IgG-mediated oxidative burst was inhibited by anti-Fc gamma RII Fab and anti-Fc gamma RIII F(ab')2 but not by My43. Conversely, the IgA-mediated oxidative burst was inhibited by My43 but not by anti-Fc gamma RII or anti-Fc gamma RIII. When anti-Fc receptor monoclonal antibodies (mAbs) were used directly as ligands, it was observed that both anti-Fc gamma RII Fab and anti-Fc gamma RII F(ab')2 promoted the oxidative burst when cross-linked. Moreover, My43, when cross-linked with F(ab')2 antimouse IgM, also triggered the oxidative burst, whereas an IgM anti-CD15 mAb, PM81, did not stimulate function. This demonstrates that IgA receptors on PMNs are function-triggering molecules and that an anti-IgA receptor mAb may be substituted as a ligand.
journal_name
J Leukoc Bioljournal_title
Journal of leukocyte biologyauthors
Shen Ldoi
10.1002/jlb.51.4.373subject
Has Abstractpub_date
1992-04-01 00:00:00pages
373-8issue
4eissn
0741-5400issn
1938-3673journal_volume
51pub_type
杂志文章abstract::MicroRNAs are short endogenous noncoding RNAs that play pivotal roles in a diverse range of cellular processes. The miR-181 family is important in T cell development, proliferation, and activation. In this study, we have identified BRK1 as a potential target of miR-181c using a dual selection functional assay and have...
journal_title:Journal of leukocyte biology
pub_type: 杂志文章
doi:10.1002/JLB.1A0817-325RR
更新日期:2018-05-01 00:00:00
abstract::Hybridoma cell lines were produced by fusion of SP2/0 murine myeloma cell line with the spleen cells of Wister rats which were immunized with IgG2a-binding protein isolated from the detergent lysate of a murine macrophagelike cell line, P388D1, by affinity chromatography on IgG-Sepharose 4B. A monoclonal clone (design...
journal_title:Journal of leukocyte biology
pub_type: 杂志文章
doi:10.1002/jlb.45.4.311
更新日期:1989-04-01 00:00:00
abstract::4-1BB is a member of the TNFR superfamily, which contributes to the activation of signaling pathways required for the survival of activated and memory T cells. We have shown previously that TRAF1, an adaptor protein recruited to 4-1BB, is required for 4-1BB-mediated CD8 T cell survival in vivo. With the use of a prote...
journal_title:Journal of leukocyte biology
pub_type: 杂志文章
doi:10.1189/jlb.1112579
更新日期:2013-05-01 00:00:00
abstract::Rats were injected with phenylhydrazine (PHZ) for periods of up to 6 months, during which time a marked leukocytosis was induced. The highest leukocyte counts occurred within 4-5 days following injection. An initial injection of 4 mg/100 gm body weight evoked a mean total leukocyte count of 129 X 10(3) cells/microlite...
journal_title:Journal of leukocyte biology
pub_type: 杂志文章
doi:10.1002/jlb.39.1.37
更新日期:1986-01-01 00:00:00
abstract::This study tested the hypothesis that eotaxins (CCL11, CCL24, and CCL26) and IL-5 contribute to eosinophil recruitment to the intestine in UC and that intestinal macrophages are important producers of CCL11 in this disease. Peripheral blood and rectal biopsy samples were obtained from patients with active (n=18) and q...
journal_title:Journal of leukocyte biology
pub_type: 杂志文章
doi:10.1189/jlb.1212640
更新日期:2013-11-01 00:00:00
abstract::Antigen presentation to T lymphocytes has been characterized extensively in terms of T lymphocyte activation and eventual cell death. In contrast, little is known about the consequences of antigen presentation for the antigen-presenting cell (APC). We have determined the outcome of major histocompatibility complex cla...
journal_title:Journal of leukocyte biology
pub_type: 杂志文章
doi:10.1189/jlb.0703356
更新日期:2004-06-01 00:00:00
abstract::The existence of an association between the brain and immunity has been documented. Data show that the nervous and immune systems communicate with one another to maintain immune homeostasis. Activated immune cells secrete cytokines that influence central nervous system activity, which in turn, activates output through...
journal_title:Journal of leukocyte biology
pub_type: 杂志文章,评审
doi:10.1189/jlb.1105625
更新日期:2006-06-01 00:00:00
abstract::As part of a study to identify novel genes associated with macrophage activation, we have cloned a new member of the transforming growth factor beta (TGF-beta) superfamily designated macrophage inhibitory cytokine 1 (MIC-1). MIC-1 is synthesized as a 62-kDa intracellular protein, which, after cleavage by a furin like ...
journal_title:Journal of leukocyte biology
pub_type: 杂志文章,评审
doi:10.1002/jlb.65.1.2
更新日期:1999-01-01 00:00:00
abstract::Human immunodeficiency virus infects different cell types including CD4+ lymphocytes and monocyte-derived macrophages (MDMs). We have examined the activity of the HIV-1 Tat inhibitors Ro-5-3335 and Ro-24-7429 in cultured human peripheral MDMs. Monocytes were isolated from HIV-seronegative donors by gradient centrifuga...
journal_title:Journal of leukocyte biology
pub_type: 杂志文章
doi:10.1002/jlb.56.3.369
更新日期:1994-09-01 00:00:00
abstract::A cell resistant to concentrations of mitomycin-C associated with the inactivation of many in vitro immune responses is described. This cell is responsive to concanavalin A (Con A), poorly adherent to nylon wool, present in relatively greater numbers in lymph node than other lymphoid tissues, and is relatively radiose...
journal_title:Journal of leukocyte biology
pub_type: 杂志文章
doi:10.1002/jlb.41.1.33
更新日期:1987-01-01 00:00:00
abstract::CD163 is a member of the group B scavenger receptor cysteine-rich (SRCR) superfamily. This study describes aspects of the tissue distribution, the regulation of expression, and signal transduction after cross-linking of this receptor at the cell surface of macrophages. CD163 showed an exclusive expression on resident ...
journal_title:Journal of leukocyte biology
pub_type: 杂志文章
doi:10.1002/jlb.66.5.858
更新日期:1999-11-01 00:00:00
abstract::Human alveolar macrophages (AMO) have been investigated for their ability to produce three monokines, tumor necrosis factor-alpha (TNF), macrophage colony stimulating factor (CSF-1), and interleukin 1-beta (IL-1). No TNF activity was found in supernatants of unstimulated AMO cultured for 20 h, although TNF mRNA was de...
journal_title:Journal of leukocyte biology
pub_type: 杂志文章
doi:
更新日期:1989-04-01 00:00:00
abstract::SHP-1 is a cytoplasm protein tyrosine phosphatase expressed primarily in hematopoietic cells. In the immune system, SHP-1 plays critical roles in regulation of many receptor-mediated signaling cascades, and SHP-1 deficiency in mice causes spontaneous inflammation and autoimmunity. Here, we report a unique requirement ...
journal_title:Journal of leukocyte biology
pub_type: 杂志文章
doi:10.1189/jlb.0409289
更新日期:2010-05-01 00:00:00
abstract::Vascular occlusion is the main cause of the morbidity and mortality observed in patients with sickle cell disease (SCD). Increasing evidence indicates that (activated) neutrophils could play an important role in the initiation and propagation of vaso-occlusive processes in SCD. In this study, the activation state of n...
journal_title:Journal of leukocyte biology
pub_type: 杂志文章
doi:10.1002/jlb.66.3.411
更新日期:1999-09-01 00:00:00
abstract::LPS induces dendritic cell (DC) activation, but the precise in vivo mechanism is unclear since DCs express low levels of TLR4. Here, it is shown that DCs can be activated in response to LPS through a bystander mechanism. This result was obtained using chimeric mice reconstituted with LPS-responsive and nonresponsive b...
journal_title:Journal of leukocyte biology
pub_type: 杂志文章
doi:10.1189/jlb.0406253
更新日期:2006-12-01 00:00:00
abstract::There is accumulating evidence that omega-3 fatty acids may modulate immune responses. When monocytes were differentiated to dendritic cells (DCs) in the presence of docosahexaenoic acid (DHA), the expression of costimulatory and antigen presentation markers was altered in a concentration-dependent way, positively or ...
journal_title:Journal of leukocyte biology
pub_type: 杂志文章
doi:10.1189/jlb.1007688
更新日期:2008-10-01 00:00:00
abstract::A murine interleukin-2 (IL-2)-dependent T-cell line, CTLL-2, was infected with a retrovirus carrying the mouse c-myc cDNA and the Tn-5 neogene. Transduced cells were selected in the presence of Geneticin sulfate (G418); these cells were shown to express both the endogenous and the transduced c-myc genes. The IL-2 requ...
journal_title:Journal of leukocyte biology
pub_type: 杂志文章
doi:10.1002/jlb.44.6.559
更新日期:1988-12-01 00:00:00
abstract::Introduction of alloantigens into the AC induces a form of immune tolerance known as ACAID, which induces antigen-specific CD8+ Tregs, contributing to ocular immune privilege by down-regulating immune responses. Recent evidence suggests IFN-γ is needed for the suppressive function of CD8+ ACAID Tregs. This study teste...
journal_title:Journal of leukocyte biology
pub_type: 杂志文章
doi:10.1189/jlb.0311173
更新日期:2012-03-01 00:00:00
abstract::Several lines of evidence support the concept that NK cells play an important role in control of hepatitis C virus (HCV) infection via cytokine secretion and cytotoxicity. IL-7 is a homeostatic cytokine with a role in T cell development, activation, proliferation, and cytokine secretion. The IL-7Rα chain [cluster of d...
journal_title:Journal of leukocyte biology
pub_type: 杂志文章
doi:10.1189/jlb.5A1116-456R
更新日期:2017-07-01 00:00:00
abstract::The ability of encapsulated and acapsular strains of Cryptococcus neoformans to activate dendritic cells (DC) derived from monocytes stimulated with granulocyte macrophage-colony stimulating factor and interleukin-4 was evaluated. Profound differences in DC response to encapsulated and acapsular C. neoformans strains ...
journal_title:Journal of leukocyte biology
pub_type: 杂志文章
doi:10.1189/jlb.1002476
更新日期:2003-09-01 00:00:00
abstract::The mechanisms by which concanavalin A (Con A), a lectin, activates T cells are poorly studied. A low dose of Con A is stimulatory for T cells, whereas a high dose of Con A results in suppression of proliferation and enhanced T cell death. The expression and functional roles of costimulatory receptors, CD28 and cytoto...
journal_title:Journal of leukocyte biology
pub_type: 杂志文章
doi:10.1189/jlb.1104644
更新日期:2005-07-01 00:00:00
abstract::CD4(+)/CD8(+) DP thymocytes are a well-described T cell developmental stage within the thymus. However, once differentiated, the CD4(+) lineage or the CD8(+) lineage is generally considered to be fixed. Nevertheless, mature CD4(+)/CD8(+) DP T cells have been described in the blood and peripheral lymphoid tissues of nu...
journal_title:Journal of leukocyte biology
pub_type: 杂志文章,评审
doi:10.1189/jlb.1RU0814-382
更新日期:2015-01-01 00:00:00
abstract::The neutrophil inflammatory response can be altered profoundly by contact with extracellular matrix proteins (ECMs). We characterized functional responses (intracellular calcium, actin polymerization, degranulation, adhesion, and oxidative burst) of bovine neutrophils adhered to selected ECM proteins [collagen IV, lam...
journal_title:Journal of leukocyte biology
pub_type: 杂志文章
doi:
更新日期:2002-05-01 00:00:00
abstract::Binding of a potent chemotactic formyl tetrapeptide, formylmethionyl-leucyl-phenylalanyl-phenylalanine (fMet-Leu-Phe-Phe), to the formyl peptide receptors on the rabbit neutrophil was assessed by two approaches. A tritiated preparation of fMet-Leu-Phe-Phe was used for direct binding studies, whereas indirect studies c...
journal_title:Journal of leukocyte biology
pub_type: 杂志文章
doi:10.1002/jlb.43.5.420
更新日期:1988-05-01 00:00:00
abstract::Evidence that gamma/delta T cells play a broad, immunoregulatory role has been accumulating steadily. We show here that myeloid cells are disregulated after peritoneal infection with Listeria monocytogenes in mice lacking gamma/delta T cells. Inflammatory populations of neutrophils and monocytes recruited to the site ...
journal_title:Journal of leukocyte biology
pub_type: 杂志文章
doi:10.1189/jlb.1103574
更新日期:2004-07-01 00:00:00
abstract::Murine peritoneal exudate cells (PEC) pre-exposed to bacterial lipopolysaccharide (LPS) show augmented nitric oxide (NO) production by LPS restimulation, in contrast to LPS tolerance with reduced production of tumor necrosis factor alpha (TNF-alpha) and interleukin-6 (IL-6). Significant amounts of interferon-gamma (IF...
journal_title:Journal of leukocyte biology
pub_type: 杂志文章
doi:10.1002/jlb.66.6.974
更新日期:1999-12-01 00:00:00
abstract::A murine model of allergic bronchopulmonary aspergillosis (ABPA), developed by exposure to Aspergillus fumigatus antigens, demonstrated eosinophilia of peripheral blood (PB), bone marrow (BM), and lung. The eosinophilia was abrogated by monoclonal anti-interleukin-5 (IL-5) antibody (TRFK-5) and not by an isotype contr...
journal_title:Journal of leukocyte biology
pub_type: 杂志文章
doi:10.1002/jlb.53.3.264
更新日期:1993-03-01 00:00:00
abstract::Autism spectrum disorders (ASD) are part of a broad spectrum of neurodevelopmental disorders known as pervasive developmental disorders, which occur in childhood. They are characterized by impairments in social interaction, verbal and nonverbal communication and the presence of restricted and repetitive stereotyped be...
journal_title:Journal of leukocyte biology
pub_type: 杂志文章,评审
doi:10.1189/jlb.1205707
更新日期:2006-07-01 00:00:00
abstract::The viral CC chemokines MC148, encoded by the poxvirus molluscum contagiosum, and viral macrophage inflammatory protein (vMIP)-I and vMIP-II, encoded by human herpesvirus 8, were probed on the murine CC receptor (CCR) 8 in parallel with human CCR8. In calcium mobilization assays, vMIP-I acted as a high-affinity agonis...
journal_title:Journal of leukocyte biology
pub_type: 杂志文章
doi:
更新日期:2001-08-01 00:00:00
abstract::In this study, we analyzed the specific effects of transforming growth factor beta (TGF-beta1) and/or IL-4 on monocyte-derived cells. Monocytes were cultured with GM-CSF, GM-CSF/TGF-beta1, GM-CSF/IL-4, or GM-CSF/IL-4/TGF-beta1 before cell morphology, phenotype, and function were assessed. As expected, interleukin-4 is...
journal_title:Journal of leukocyte biology
pub_type: 杂志文章
doi:
更新日期:2002-05-01 00:00:00