PerkinElmer
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LAG-3 (human) AlphaLISA Detection Kit, 5,000 assay points

The AlphaLISA® immunoassay kit for human LAG-3 enables the quantitative determination of human lymphocyte-activation gene 3 (LAG-3) in serum, buffered solution, and cell culture media using a homogeneous AlphaLISA assay (no wash steps).

For research use only; not for diagnostic procedures. All products to be used in accordance with applicable laws and regulations including without limitation, consumption & disposal requirements under European REACH regulations (EC 1907/2006).

Part Number
Unit Size
List Price
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AL3058HV
100 Assay Points
893.00 USD
 
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AL3058C
500 Assay Points
2144.00 USD
 
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AL3058F
5,000 Assay Points
17200.00 USD
 
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Overview

Formats:

  • Our 100 assay point kit allows you to run 100 wells in 96-well format, using a 100 µL reaction volume (10 µL of sample).
  • Our 500 assay point kit allows you to run 500 wells in 96-well or 384-well format, using a 50 µL reaction volume (5 µL of sample).
  • Our 5,000 assay point kit allows you to run 5,000 wells in 96-well or 384-well format, using a 50 µL reaction volume (5 µL of sample).

Features:

  • No-wash steps, no separation steps
  • ELISA alternative technology
  • Sensitive detection
  • Broad sample compatibility
  • Small sample volume
  • Results in less than 3 hours
  • Half the time of an ELISA assay

AlphaLISA technology allows the detection of molecules of interest in buffer, cell culture media, serum and plasma in a highly sensitive, quantitative, reproducible and user-friendly mode. In an AlphaLISA assay, a Biotinylated Anti-Analyte Antibody binds to the Streptavidin-coated Alpha Donor beads, while another Anti-Analyte Antibody is conjugated to AlphaLISA Acceptor beads. In the presence of the analyte, the beads come into close proximity. The excitation of the Donor beads provokes the release of singlet oxygen molecules that triggers a cascade of energy transfer in the Acceptor beads, resulting in a sharp peak of light emission at 615 nm.

Lymphocyte-activation gene 3 (LAG-3), also known as CD223, is a cell surface protein that affects T-cell function in many ways. LAG-3 is expressed on natural killer cells, plasmacytoid dendritic cells, B-cells, and activated T-cells. LAG-3 works in similar fashion to CTLA-4 and PD-1 in that it negatively regulates cellular proliferation and Treg suppression. Maturation and activation of dendritic cells is also known to be affected by LAG-3 expression. Soluble forms are in clinical development to activate dendritic cells. Anti-LAG-3 antibodies are undergoing studies for anti-cancer and autoimmune response.

Specifications

Assay Target LAG3
Assay Target Class Protein
Automation Compatible Yes
Detection Method Alpha
Product Brand Name AlphaLISA
Shipping Condition Blue Ice
Therapeutic Area Cancer
Unit Size 5,000 Assay Points
Resources, Events & More
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Application Brief

Eight Limitations of ELISA and How to Overcome Them Using Alternative Technologies

The introduction of enzyme-linked immunosorbent assays (ELISAs) in the early 1970’s offered researchers a non-radiometric immunoassay platform without compromising sensitivity. Over the last 50 years scientists have made huge strides in disease research and drug discovery and a demand for greater assay throughput and sensitivity has evolved. In response, more robust immunoassays have been developed to address some of the limitations of the standard, colorimetric ELISA.

Find out about the most common limitations of traditional ELISAs and how different ELISA alternative technologies address these limitations.

PDF 1 MB

Application Note

Quantifying Changes in CD28 and CTLA-4 Levels in Peripheral Blood Mononuclear Cells with AlphaLISA Technology

One approach to immunotherapy is the modulation of immune checkpoints that are critical in regulating the degree and duration of immune system responses and preventing autoimmunity.

In this application note, you will learn:

  • Why AlphaLISA® technology is an effective assay for the detection and quantification of biomarkers such as CD28 and CTLA-4
  • How to run an AlphaLISA assay to detect and quantify immuno-oncology biomarkers
  • Benefits of using Alpha technology for biomarker quantification assays
  • An example of the data and analysis you can generate for biomarker assays

PDF 1 MB
Using AlphaLISA Biomarker Kits to Assess Effects of PBMC-Conditioned Media on 3D and 2D Cell Culture Models of Breast Cancer

Various cytokines are secreted during an active immune response that can have modulatory effects on target cell populations, including interferon gamma (IFN-ɣ), tumor necrosis factor alpha (TNFa) and several interleukins.

In this application note, you will learn how we investigated:

  • The effects of secreted factors on a triple-negative breast cancer cell line by treatment with conditioned media from activated PBMCs
  • Whether the modulatory effects of cytokines secreted by infiltrating immune is different when studied in 3D cell cultures
  • How to detect and quantify multiple immune-modulated proteins from the same wells in complex cell models grown in 3D spheroid microplates and traditional 2D cell culture using AlphaLISA® technology and EnVision® multimode plate reader in a workflow with ATPlite 1step and Opera® Phenix high-content screening system

PDF 2 MB

Brochure

Flyer

Manual

AlphaLISA human LAG-3 Detection Kit

This manual describes how to run an AlphaLISA human LAG-3 detection assay.

PDF 450 KB