Classical Complement Pathway ELISA kit [Mouse] (CAT#: CB-P075-K) Datasheet

Kit

The kit can measure the activity of the lectin pathway mediated by MBL. Complement defects or other defects in the complement system can be easily screened by analyzing each pathway in parallel or separately. The ELISA contains a positive control that can be used as a process control to ensure that the lectin complement cascade has been fully run. This positive control cannot be used to determine the activation level between batches. We recommend that you include a reference sample of 100% complement activity and a negative control (such as unpreserved activated serum) in your study to determine the activation level of the sample. Note that the level of complement activity depends on the mouse strain and may be affected by the way the sample is collected and processed. The innate immune system is important in the important defense against foreign pathogens. The main component of this response is the complement system. The complement system consists of a complex family of proteins and receptors, which are found in the circulatory system, tissues and other body fluids. Today, some connections with adaptive immunity are also described. The system consists of three defined pathways, which are activated by pathway-specific molecules. Complement activation proceeds in a sequential manner through proteolytic cleavage of a series of proteins, leading to the production of activation products that mediate various biological activities through interactions with specific cell receptors and other serum proteins. These three pathways, called classical pathways, lectin pathways and alternative pathways respectively, converge into a final common pathway in a central part. That is, the activation of C3 leads to the formation of C3a and C3b. This cleavage activates the terminal complement pathway, which ultimately leads to the formation of the terminal C5b-9 complement complex (TCC). The classical pathway is initiated by the binding of C1q to the antibody complex, while the alternative pathway and the lectin pathway are through the interaction of complement components with specific carbohydrate groups and lipopolysaccharides (LPS) on the surface of foreign pathogens, respectively. The antibody is activated in an independent manner. Alternative pathways also serve as amplification loops for other pathways. Under certain conditions, the complement system may be detrimental to the host, causing for example. Autoimmune diseases and infections. The lack of C3 is, for example, related to SLE. Changes in alternative pathways, such as properdin or fibronectin deficiency, can increase susceptibility to infection. Mannose-binding lectin (MBL) is the main component of the lectin pathway and is related to bacterial, fungal and viral infections. A common method to measure the activity of the classical or alternative pathway is hemolysis of red blood cells. In addition, several assays have been described to measure the activity of the MBL pathway. When it comes to measurement procedures, these measurements are laborious and not simple.

Mouse Classical Complement Pathway ELISA is a qualitative/semi-quantitative ELISA for in vitro determination of the activation of the classic pathway of complement system in serum samples.

The mouse classic complement ELISA kit is a ready-to-use solid-phase enzyme-linked immunosorbent assay based on the sandwich principle. The working time is 3 hours. The effective form of the plate with twelve disposable 8-well plates allows free choice of batch size for determination. Samples and positive controls are incubated in microtiter wells coated with antibodies. The biotinylated tracer antibody will bind to the bound C5b-9 in the sample and control. The streptavidin-peroxidase conjugate will bind the biotinylated tracer antibody. Streptavidin peroxidase will react with the substrate tetramethylbenzidine (TMB). The enzyme reaction is stopped by adding oxalic acid. Measure the absorbance at 450nm with a spectrophotometer.