Abstract：
:Limiting dilution (LD) cultures are often used to study cellular heterogeneity in responses of murine splenocytes to specific or polyclonal activation. LD titration curves often reveal a nonlinear dependence of response on input cell dose. Although 'zigzag' shaped curves of this kind are often interpreted and analyzed as resulting from interactions among three distinct cell types, we observe that a more parsimonious two cell model, including a cell type that can generate both positive and negative effects, provides better fit to a wide range of experimental data. We have developed mathematical models for the accurate estimation of the frequencies of both interacting cell types and of the parameters for their multi-hit interaction. We show examples of LD cultures in which specific experimental manipulations alter the frequency of only one of the two cell types, or alter the interaction parameters without a change in responder frequency. We also provide a simplified method for approximation of the model parameters using graphical approaches and simple algebra. Lastly, we present an improved method for calculation of the effect generated per responder cell in microclonal cultures.
journal_name
J Immunol Methodsjournal_title
Journal of immunological methodsauthors
Dozmorov IM,Lutsenko GV,Sidorov LA,Miller RAdoi
10.1016/0022-1759(95)00241-3subject
Has Abstractpub_date
1996-02-05 00:00:00pages
183-96issue
2eissn
0022-1759issn
1872-7905pii
0022175995002413journal_volume
189pub_type
杂志文章abstract：:Hybridomas secreting monoclonal antibodies specific for hemoglobin nonenzymatically glycated in the non-A1c position were produced by fusion of SP 2/0 myeloma cells with spleen cells from BALB/c mice immunized with nonenzymatically glycated hemoglobin prepared from human erythrocytes. Wells containing hydridomas secre...
journal_title：Journal of immunological methods
pub_type： 杂志文章
doi：10.1016/0022-1759(91)90364-l
更新日期：1991-07-05 00:00:00
abstract：:A microscale ELISA system, designated as the 'C1q-micro ELISA,' has been developed for the measurement of circulating immune complexes. The sensitivity of the method ranged between 0.1 and 3 microgram equivalents of aggregated human gamma-globulins. The procedure requires small quantities of serum and reagents, and it...
journal_title：Journal of immunological methods
pub_type： 杂志文章
doi：10.1016/0022-1759(82)90308-8
更新日期：1982-01-01 00:00:00
abstract：:In standard displacement flow immunoassays the analyte in the sample creates an active dissociation of labelled antigens (or antigen homologues) from an antigen binding site of an immobilized antibody, after which the labelled substance is measured downstream. Such systems have been described for molecules up to 1 kDa...
journal_title：Journal of immunological methods
pub_type： 杂志文章
doi：10.1016/s0022-1759(98)00106-9
更新日期：1998-08-01 00:00:00
abstract：:Sepsis is a systemic inflammatory response ensuing from presence and persistence of microorganisms in the bloodstream. The possibility to identify them at low concentrations may improve the problem of human health and therapeutic outcomes. So, sensitive and rapid diagnostic systems are essential to evaluate bacterial ...
journal_title：Journal of immunological methods
pub_type： 杂志文章
doi：10.1016/j.jim.2018.12.004
更新日期：2019-02-01 00:00:00
abstract：:Factors influencing the performance of a dipstick competitive particle capture immunoassay (PCI) for the steroid oestrone sulphate (OS) were investigated. Appropriate 'blocking' of the nitrocellulose dipstick membrane was necessary for the upward flow of microsphere particles. Traditional protein blocking agents inclu...
journal_title：Journal of immunological methods
pub_type： 杂志文章
doi：10.1016/s0022-1759(02)00280-6
更新日期：2002-12-01 00:00:00
abstract：:A previously described assay for neutrophil phagocytosis of oil droplets labeled with the lipophilic red dye, oil red O, has been adapted to a microtiter plate format. Oil laden neutrophils are fixed to the plate with glutaraldehyde, washed free of uningested oil, and evaluated for degree of oil red O uptake by direct...
journal_title：Journal of immunological methods
pub_type： 杂志文章
doi：10.1016/0022-1759(91)90237-a
更新日期：1991-11-05 00:00:00
abstract：:Hapten (trinitrophenyl) was coupled to antigen (ovalbumin). The haptenated antigen was bound by anti-ovalbumin antibody and binding was quantitated with 125I-labelled anti-hapten antibodies. Thus, with a single radioactive reagent antibodies against a variety of antigens can be detected, whilst the problems inherent i...
journal_title：Journal of immunological methods
pub_type： 杂志文章
doi：10.1016/0022-1759(78)90011-x
更新日期：1978-01-01 00:00:00
abstract：:Conditions for desorbing a DNP carrier from its immunoadsorbent were studied in various hydro-organic media at different pHs and temperatures, including the sub-zero range. It appeared that DNP--anti-DNP interaction is the result of a balance between various bonds and the best result (95% yield) was obtained in hydro-...
journal_title：Journal of immunological methods
pub_type： 杂志文章
doi：10.1016/0022-1759(78)90105-9
更新日期：1978-01-01 00:00:00
abstract：:A mouse hybrid hybridoma (tetradoma) was prepared by fusing hybridomas producing monoclonal antibody to acetyl-aminofluorene with hybridomas producing antibody against calf intestine alkaline phosphatase. The tetradoma line established secreted immunoglobulin manifesting parental and bispecific binding characteristics...
journal_title：Journal of immunological methods
pub_type： 杂志文章
doi：10.1016/0022-1759(94)90131-7
更新日期：1994-02-28 00:00:00
abstract：:In order to isolate monoclonal antibodies (mAbs) that bind to tumor-associated antigens (Ags) we developed the following strategy. Using the phage-display Ab library we isolated a large number of mAbs that bind to the surface of human tumor cells. The mAbs were individually screened by immunostaining, and clones that ...
journal_title：Journal of immunological methods
pub_type： 杂志文章
doi：10.1016/j.jim.2009.09.003
更新日期：2009-12-31 00:00:00
abstract：:Cell hybridization techniques have already been utilized, but the outcome is usually not very stable. In order to achieve high stability we tried to achieve closer intercellular contact. Neuraminidase treatment was used to remove sialic acid from the cell membrane, since sialic acid usually prevents close contact betw...
journal_title：Journal of immunological methods
pub_type： 杂志文章
doi：10.1016/0022-1759(90)90260-3
更新日期：1990-12-31 00:00:00
abstract：:This report describes a simple solid-phase technique for the positive selection of lymphocytes labeled with fluoresceinated antibodies. B lymphocytes were labeled with fluoresceinated anti-human Ig or monoclonal anti-human Ia (L243), and then were bound to plastic culture dishes coated with affinity purified goat anti...
journal_title：Journal of immunological methods
pub_type： 杂志文章
doi：10.1016/0022-1759(81)90344-6
更新日期：1981-01-01 00:00:00
abstract：:Introduction of a tumor antigen-specific T cell receptor (TCR) into patient-derived lymphocytes has already exhibited promising results for the treatment of melanoma and other malignancies in clinical trials. However, insufficient or unsuccessful ex vivo manufacturing of engineered T cells due to low expansion and/or ...
journal_title：Journal of immunological methods
pub_type： 杂志文章
doi：10.1016/j.jim.2019.06.015
更新日期：2019-09-01 00:00:00
abstract：:A new rapid staining and measuring method has been developed for the quantification of migrated cells in a microchemotaxis chamber. The migrated cells were, after staining, evaluated by a transmission densitometer. The method introduced here is more accurate and faster than those described previously. In addition the ...
journal_title：Journal of immunological methods
pub_type： 杂志文章
doi：10.1016/0022-1759(89)90051-3
更新日期：1989-03-10 00:00:00
abstract：:In this study, we have developed a simple and efficient technique for the isolation of viable lymphocytes from the epithelium and stroma of small pre-neoplastic squamous intraepithelial lesions (SIL) of the uterine cervix. Following the separation of the epithelium from the stroma using dispase II, both biopsy fragmen...
journal_title：Journal of immunological methods
pub_type： 杂志文章
doi：10.1016/s0022-1759(98)00205-1
更新日期：1999-02-01 00:00:00
abstract：:Staphylococcus aureus causes a variety of infections. Knowledge about the physiological role of most S. aureus antigens in colonization and infection is only limited. This can be studied by measuring antigen-specific antibody responses. In this study, we optimized the multiplex microsphere bead-based flow cytometry te...
journal_title：Journal of immunological methods
pub_type： 杂志文章
doi：10.1016/j.jim.2010.12.013
更新日期：2011-02-28 00:00:00
abstract：:A simple apparatus for measuring chemotaxis is described which contains thirty chambers per unit. Only very few cells and small volumes of chemotactic factor solution are required per chamber. For satisfactory results the apparatus must be centrifuged briefly prior to incubation. Under these conditions results can be ...
journal_title：Journal of immunological methods
pub_type： 杂志文章
doi：10.1016/s0022-1759(97)90008-9
更新日期：1977-01-01 00:00:00
abstract：:The Immune Epitope Database and Analysis Resource (IEDB, http://www.iedb.org) hosts a continuously growing set of immune epitope data curated from the literature, as well as data submitted directly by experimental scientists. In addition, the IEDB hosts a collection of prediction tools for both MHC class I and II rest...
journal_title：Journal of immunological methods
pub_type： 杂志文章,评审
doi：10.1016/j.jim.2010.10.010
更新日期：2011-11-30 00:00:00
abstract：:Visceral leishmaniasis, which is also known as Kala-Azar, is one of the most severely neglected tropical diseases recognized by the World Health Organization (WHO). The threat of this debilitating disease continues due to unavailability of promising drug therapy or human vaccine. An extensive research is undergoing to...
journal_title：Journal of immunological methods
pub_type： 杂志文章,评审
doi：10.1016/j.jim.2015.03.017
更新日期：2015-07-01 00:00:00
abstract：:A fast and simple indirect immunoperoxidase staining technique is described, which can also be used for the characterization of cells with high endogenous peroxidase activity such as many haemopoietic cells. It is based on the combination of a newly developed glucose-oxidase plus glucose procedure for the inhibition o...
journal_title：Journal of immunological methods
pub_type： 杂志文章
doi：10.1016/0022-1759(86)90267-x
更新日期：1986-01-22 00:00:00
abstract：:A fluorescence quenching method, using trypan blue, is described for quantifying the ingestion of either glutaraldehyde-fixed sheep red blood cells or antibody coated glutaraldehyde-fixed sheep red blood cells by murine peritoneal macrophages. This method is based on the observations that glutaraldehyde-fixed red bloo...
journal_title：Journal of immunological methods
pub_type： 杂志文章
doi：10.1016/0022-1759(83)90097-2
更新日期：1983-02-25 00:00:00
abstract：:The lysis of susceptible targets by efficient cytotoxic T lymphocytes (CTL) increases both with time and with the ratio of CTL to target. Simple methods for calculating a killing rate constant from the time dependence of killing and for calculating the relation of the killing rate constant to the concentration of exoc...
journal_title：Journal of immunological methods
pub_type： 杂志文章
doi：10.1016/0022-1759(96)00009-9
更新日期：1996-06-10 00:00:00
abstract：:Application of antibody phage display to the identification of cell surface antigens with restricted expression patterns is often complicated by the inability to demonstrate specific binding to a certain cell type. The specificity of an antibody can only be properly assessed when the antibody is of sufficient high aff...
journal_title：Journal of immunological methods
pub_type： 杂志文章
doi：10.1016/j.jim.2005.04.016
更新日期：2005-07-01 00:00:00
abstract：:Etanercept, a recombinant human tumor necrosis factor (TNF) receptor Fc fusion protein is an effective treatment option in adults with rheumatoid arthritis, ankylosing spondylitis, psoriatic arthritis or plaque psoriasis and paediatrics with juvenile idiotypic arthritis and plaque psoriasis. Patent expiration in Europ...
journal_title：Journal of immunological methods
pub_type： 杂志文章
doi：10.1016/j.jim.2017.03.007
更新日期：2017-08-01 00:00:00
abstract：:A paper radioimmunosorbent test (PRIST) was shown to be sensitive and reproducible when used with excretory/secretory antigen of Toxocara canis second stage larvae. Whatman No. 50 filter paper (5 mm discs) gave the most consistent and clear results with antigen at a concentration of 100 micrograms/ml, and could be sto...
journal_title：Journal of immunological methods
pub_type： 杂志文章
doi：10.1016/0022-1759(80)90180-5
更新日期：1980-01-01 00:00:00
abstract：:In the current study we attempted to evaluate the suitability of T7 Select 10-3b and lambdaKM8 phage display systems for the identification of antigens eliciting B cell responses in cancer patients and the production of phage-displayed antigen microarrays that could be exploited for the monitoring of autoantibody prof...
journal_title：Journal of immunological methods
pub_type： 杂志文章
doi：10.1016/j.jim.2008.01.022
更新日期：2008-05-20 00:00:00
abstract：:The short-term kinetics of T cell-mediated cytotoxicity was investigated using a cloning inhibition assay. Murine cytotoxic thymus-derived lymphocytes (CTL) generated in vitro in mixed leukocyte cultures (MLC), were incubated for various periods of time at 37 degrees C with allogeneic mastocytoma target cells. The mix...
journal_title：Journal of immunological methods
pub_type： 杂志文章
doi：10.1016/0022-1759(77)90201-0
更新日期：1977-01-01 00:00:00
abstract：:Transduction of bone marrow stem cells with retroviral expression vectors represents a cheaper and more rapid alternative to conventional transgenesis for studies of in vivo gene function. However, achieving tissue-specific expression of genes inserted into retroviral vectors is notoriously difficult. We have develope...
journal_title：Journal of immunological methods
pub_type： 杂志文章
doi：10.1016/j.jim.2010.06.007
更新日期：2010-08-31 00:00:00
abstract：:We describe a method for standardizing cytotoxicity assays by the use of cryopreserved, fluorescently labeled target cells. The cells are labeled in batches with the fluorogenic element europium (Eu) and frozen in multiple aliquots. Replicate aliquots can be thawed on different days and used for cytotoxicity assays. T...
journal_title：Journal of immunological methods
pub_type： 杂志文章
doi：10.1016/0022-1759(90)90112-9
更新日期：1990-11-06 00:00:00
abstract：:Near-infrared Raman spectroscopy may provide a highly sensitive, noninvasive means to identify activation status of leukocytes. The purpose of the current study was to establish Raman spectroscopic characteristics of T cell activation. Activation of the RsL.11 T cell clone in vitro with Con A resulted in specific decr...
journal_title：Journal of immunological methods
pub_type： 杂志文章
doi：10.1016/j.jim.2004.11.020
更新日期：2005-02-01 00:00:00
