Abstract:
:Gene targeting in hybridoma cells provides a tool for generating chimeric antibodies with great ease and at high yield. We present an evaluation of integration vectors for the chimerization of the immunoglobulin heavy chain locus which are universally applicable to hybridomas of different isotypes and mouse strains. There are three problems arising with vector integration: (i) the frequent persistence of the parental isotype; (ii) an isotype-dependent aberrant replacement-like recombination giving rise to antibodies devoid of the CH1 domain; and (iii) secondary recombinations leading to excision of the integrated sequence. To overcome these problems, we have systematically evaluated the consequences of extending the vector flank. Although the homology length clearly determines the recombination frequency, this effect is counteracted by the secondary recombination, which also correlates to the homology length. In contrast, the truncating recombination events are not dependent on the homology length and never lead to re-excision of the construct. To take advantage of the increased genetic stability obtained with short flanks, we constructed an enrichment vector which yields high recombination efficiencies despite using a short flanking sequence. In addition, irradiation of the cells enhanced homologous recombination. The problem of the co-production of two isotypes was overcome by a two-step targeting reaction.
journal_name
Eur J Immunoljournal_title
European journal of immunologyauthors
Kardinal C,Hooijberg E,Lang P,Zeidler R,Mocikat Rdoi
10.1002/eji.1830250325subject
Has Abstractpub_date
1995-03-01 00:00:00pages
792-7issue
3eissn
0014-2980issn
1521-4141journal_volume
25pub_type
杂志文章abstract::The effector function of activated CD4(+) T cells and secretion of cytokines are important in the establishment of productive immune responses and tolerance. We identified expression by CD4(+) T cells of Notch receptors and ligands and enhanced Notch signaling upon activation. Notch1 expression was up regulated and co...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.200425562
更新日期:2005-03-01 00:00:00
abstract::The lymph node cells (LNC) activated in vivo by liver regeneration following partial hepatectomy of mice (primed lymph node cells) respond to regenerating liver cells in vitro with typical secondary immune response characteristics (Miyahara, S. et al., Eur. J. Immunol. 1983. 13: 878). These LNC activated in vivo suppr...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830131105
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journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/1521-4141(200104)31:4<1055::aid-immu1055>3
更新日期:2001-04-01 00:00:00
abstract::Lipoproteins or lipopeptides (LP) are bacterial cell wall components detected by the innate immune system. For LP, it has been shown that TLR2 is the essential receptor in cellular activation. However, molecular mechanisms of LP recognition are not yet clear. We used a FLAG-labeled derivative of the synthetic lipopept...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.200425336
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abstract::NK cells are innate lymphocytes crucial for surveillance against pathogens and tumors. Although the basic mechanisms through which NK cells operate have been established, many questions are still unresolved. Are all NK cells equal or can we identify subsets with distinct developmental origin and function? How do NK ce...
journal_title:European journal of immunology
pub_type:
doi:10.1002/eji.200838883
更新日期:2008-11-01 00:00:00
abstract::The mechanisms responsible for the down-modulation of the activation of separated CD4(+) or CD8(+) human T cell blasts were studied using cells obtained from healthy donors. In the presence of IL-2, human CD8(+) T cell blasts were more sensitive than CD4(+) T cell blasts to regulation by APO2 ligand/TNF-related apopto...
journal_title:European journal of immunology
pub_type: 杂志文章
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journal_title:European journal of immunology
pub_type: 信件
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journal_title:European journal of immunology
pub_type: 信件
doi:10.1002/eji.201948504
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journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.200323388
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journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830270531
更新日期:1997-05-01 00:00:00
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journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/1521-4141(200010)30:10<2972::AID-IMMU2972>
更新日期:2000-10-01 00:00:00
abstract::Both interleukin-7 (IL-7) and IL-7 receptor (R) gene knockout (IL-7-/- and IL-7R-/-) mice were employed in order to directly investigate the importance of the IL-7 and IL-7R signaling pathway for the development of intestinal intraepithelial lymphocytes (IEL). Loss of the IL-7R-specific gene resulted in complete defic...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830270903
更新日期:1997-09-01 00:00:00
abstract::The transcription factor c-Maf is critical for IL-4 production and the development of Th2 cells, which promote humoral immunity and protect against extracellular parasites. Yet, little else is known of c-Maf function in CD4 cells. Here, we identify a novel role for c-Maf in regulating susceptibility to apoptosis. Over...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.200636979
更新日期:2007-10-01 00:00:00
abstract::The activity of granzyme B, a main effector molecule of cytotoxic T lymphocytes (CTL) and natural killer cells, is regulated by the human intracellular serpin proteinase inhibitor 9 (PI9). This inhibitor is particularly expressed by CTL and dendritic cells, in which it serves to protect these cells against endogenous ...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.200425949
更新日期:2005-04-01 00:00:00
abstract::Cofilin, an actin-depolymerizing protein, is essential for the functional dynamics of the actin cytoskeleton and for cell viability. In unstimulated human peripheral blood T lymphocytes cofilin is phosphorylated and localized in the cytoplasm. Following co-stimulation through accessory receptors (e.g. CD2 or CD28) - h...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/1521-4141(2000012)30:12<3422::AID-IMMU3422
更新日期:2000-12-01 00:00:00
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journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/(SICI)1521-4141(199810)28:10<3120::AID-IMM
更新日期:1998-10-01 00:00:00
abstract::The early mechanisms by which DNA-dependent immunization occurs remain poorly understood. We determined whether intradermal injection of a cytomegalovirus (CMV) promoter-driven plasmid encoding hen egg lysozyme (pCMV:HEL) induced sensitization against the encoded protein, and whether cutaneous dendritic cells (DC) wer...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/(SICI)1521-4141(199902)29:02<446::AID-IMMU
更新日期:1999-02-01 00:00:00
abstract::Local graft-vs.-host reaction (GVHR) was induced in rats by injecting parental cells into young F1 recipients. As a consequence of antigenic stimulation in the course of developing GVHR in the responding lymph nodes, the number of interleukin 2-receptor (IL 2R)-bearing T cells increased from less than 1% up to 10% of ...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830161020
更新日期:1986-10-01 00:00:00
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journal_title:European journal of immunology
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journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830260431
更新日期:1996-04-01 00:00:00
abstract::Activation of the alternative complement pathway by human B cell lymphoma lines is correlated with the presence of Epstein Barr virus (EBV) in the cell genome. EBV-negative B cell lymphoma lines produce little activation of the alternative pathway as measured either by C3 deposition on the cell surface or C3 conversio...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830080702
更新日期:1978-07-01 00:00:00
abstract::We show that IL-13 in the presence of TNF-alpha effected an equal or greater antiviral activity against a dual-tropic HIV-1 (R5X4) in macrophages. A temporary or continued exposure of macrophages to both cytokines significantly decreased the infection and replication of R5X4 HIV-1(89.6) (median, 128-fold, n = 9, p = 0...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/(SICI)1521-4141(200005)30:5<1340::AID-IMMU
更新日期:2000-05-01 00:00:00
abstract::Diacylglycerol kinases (DGKs) play important roles in restraining diacylglycerol (DAG)-mediated signaling. Within the DGK family, the ζ isoform appears to be the most important isoform in T cells for controlling their development and function. DGKζ has been demonstrated to regulate T cell maturation, activation, anerg...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.201948442
更新日期:2020-11-01 00:00:00
abstract::Bone morphogenetic proteins (BMP) are multifunctional cytokines that belong to the TGF-beta superfamily. BMP have been shown to regulate haematopoietic stem cells, B lymphopoiesis and early thymocyte differentiation. In the present study we explored the role of BMP-6 in Jurkat TAg cells. BMP-6 rapidly induced phosphor...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.200636759
更新日期:2007-10-01 00:00:00
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journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830160313
更新日期:1986-03-01 00:00:00
abstract::Vaccine efficacy largely depends upon DC targeting and activation. The most potent TLR soluble ligands induce diffuse DC activation, which may be associated with marked pro-inflammatory responses and possibly adverse effects. This raises the concern that effective vaccine adjuvants may similarly rely on widespread DC ...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.200737889
更新日期:2008-05-01 00:00:00
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journal_title:European journal of immunology
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abstract::The adoptive transfer of CD4(+)CD25(+) natural regulatory T cells (Treg) is a promising strategy for the treatment of autoimmune diseases and the prevention of alloresponses after transplantation. Clinical trials exploring this strategy require efficient in vitro expansion of this rare cell population. Protocols devel...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.200838904
更新日期:2009-04-01 00:00:00
abstract::Membrane-coated microvesicles (MVs) have been identified as important mediators in intercellular communication. During the process of apoptosis, dying cells dynamically release MVs. Neutrophils are the most abundant type of leukocytes in the circulation. Due to their very short lifespan, it is likely that they are the...
journal_title:European journal of immunology
pub_type: 杂志文章
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