Measurement of cell numbers by means of the endogenous enzyme hexosaminidase. Applications to detection of lymphokines and cell surface antigens.
نویسنده
چکیده
By using a chromogenic substrate for an ubiquitous lysosomal enzyme, hexosaminidase to estimate cell numbers, a sensitive and simple procedure has been developed in which microtiter reaction wells are directly scanned in a spectrophotometer. This method has been adapted to several cell biological assays. Quantitation of the biological activities of T cell growth factor and interferon can be performed on large numbers of samples. Adhesion of dispersed solid tissue cells to fibronectin coated substrates may be quantitated with little expenditure of reagents. By use of a panning procedure in microtiter plates a sensitive and very simple assay for the binding of monoclonal antibodies to cell surface antigens has been developed.
منابع مشابه
Detection of Helicobacter Pylori Diagnostic Antigens in the Stool of Infected Patients
Background: Some antigens of H. pylori are excreted into the stool of infected people. These antigens can be used to detect the infection by immunoassays such as ELISA. Our aim was to identify these antigens by immunoblotting and affinity chromatography techniques. Methods: Four different antigenic preparations, namely, whole cell sonicate (WCS), outer membrane proteins (OMPs), cytoplasmic anti...
متن کاملProduction and Characterization of Monoclonal Antibodies against Brucella abortus S (99) Surface Antigens
By immunizing mice with killed whole bacterial cells of Brucella abortus S (99), a panel of six hybridomas producing monoclonal antibodies (mAb) specific for the surface antigens of this bacterium were produced. ELISA was used to screen the hybridoma supernatants. Immunoblots of the cell extract indicated that three mAb were specific for S-LPS (Ba-1, Ba-2, Ba-3) and three others were reactive w...
متن کاملMicrobial Cell Surface Display: Its Medical and Environmental Applications
Cell-surface display is the expression of peptides and proteins on the surface of living cells by fusing them tofunctional components of cells which are exposed to the environment of cells. This strategy can be carriedout using different surface proteins of cells as anchoring motifs and different proteins from different sourcesas a passenger protein. It is a promising strategy...
متن کاملExpression of S and pre s2 Hepatitis B Surface Antigens in Mammalian Cos-7 Cell Line
Hepatitis B virus (HBV) is a serious global health problem. The development of a safe and effective vaccinewould help infection prevention. Previous hepatitis B vaccine production involved the isolation of the noninfectious particle from chronic HBV carriers. DNA recombinant technology has been used for vaccineproduction without having been contaminated with blood-born infectious ag...
متن کاملMeasurement of pyruvate dehydrogenase enzyme in patients with diffuse large B-cell lymphoma relapse
Background: Diffuse large B-cell lymphoma (DLBCL) is the most common type of non-Hodgkin's lymphoma (NHL), which is the most common type of lymphoma. NHL comprises a group of clinically and biologically diverse diseases, which range from indolent to aggressive clinical courses. Despite treatment advances in the last three decades with the use of combination immunotherapy, a significant fraction...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Journal of immunological methods
دوره 67 2 شماره
صفحات -
تاریخ انتشار 1984