Search Thermo Fisher Scientific
图: 1 / 4
The ProQuantum Human IgG4 Immunoassay Kit is designed to provide quantitative measurements of human IgG4 in small sample volumes. Utilizing proximity-based amplification technology, the assay combines the analyte specificity of high-affinity antibody-antigen binding with the signal detection and amplification capabilities of real-time PCR to achieve a simple yet powerful next-generation protein quantitation platform. A user-friendly workflow combined with intuitive software for analytics enables sample-to-answer in just 2 hours.
• High sensitivity-detect low levels of protein with greater sensitivity than traditional methods
• Broad dynamic range-5 logarithmic units, minimizing sample dilutions to ensure they fall within the range
• Small sample consumption-use 2-5 µL of sample (compared to 75 µL for triplicate wells with other methods)
• Fast, easy workflow-2 hours from sample to answer, with no wash steps
• No proprietary instrument to purchase-runs on any real-time PCR instrument
ProQuantum immunoassays utilize a matched pair of target-specific antibodies, each conjugated to a DNA oligonucleotide. During antibody-analyte binding, the two DNA oligos are brought into close proximity, which allows for ligation of the two strands and subsequent creation of a template strand for amplification. This platform leverages the sensitivity and large dynamic range of Applied Biosystems TaqMan real-time PCR technology (Figure 1).
The assay workflow is fast and easy-2 steps in 2 hours. There are a total of 7 components in each kit (Figure 2). First, mix the antibody-conjugates, dilute the sample, and create the standard curve in a working plate. Then, using a multi-channel pipette, add the antibody-conjugates and sample (or standard) into the wells of a PCR plate and incubate for 1 hour. Combine the master mix and ligase and add to the wells of the PCR plate, then run the plate on any qPCR instrument. After the run is complete, import the results file into the ProQuantum software (cloud-based version at https://apps.thermofisher.com/apps/proquantum). Using this software, the data can be analyzed easily to obtain protein concentration values. The software allows you to set up standard curves, design plate layouts, apply a 5PL weighted algorithm, and obtain robust statistical group-wise comparisons.
Human IgG4, also known as human immunoglobulin G4, is a subclass of human IgG antibodies that is produced by the immune system in response to antigens. It is the least abundant subclass of IgG in the blood and plays a minor role in defense against pathogens. IgG4 works by binding to specific antigens and promoting their clearance from the body through various mechanisms, including phagocytosis and complement activation. IgG4 is also involved in other immune responses, such as immune tolerance and suppression of inflammation. Human IgG4 can be used in research to study the immune response to pathogens and to develop diagnostic tests and therapeutic interventions for infectious and autoimmune diseases.
仅用于科研。不用于诊断过程。未经明确授权不得转售。
基因ID : (Human) 3503
基因符号 : IGHG4