PAI-1 (human) LANCE Ultra TR-FRET Detection Kit, 500 Assay Points

The LANCE^® Ultra Human PAI-1 Detection Kit is designed for detection and quantitation of human PAI-1 in cell culture media using a homogeneous TR-FRET (no-wash steps, no separation steps) assay.

• No-wash steps, no separation steps


• TR-FRET technology


• Sensitive detection


• High reproducibility


• Faster time-to-results


• Easy automation


• 96-well, 384-well, and 1536-well formats

LANCE® and LANCE® (Lanthanide chelate excite) Ultra are our TR-FRET (time-resolved fluorescence resonance energy transfer), homogeneous (no wash) technologies. One antibody of interest is labeled with a donor fluorophore (a LANCE Europium chelate) and the second molecule is labeled with an acceptor fluorophore (ULight™ dye). Upon excitation at 320 or 340 nm, energy can be transferred from the donor Europium chelate to the acceptor fluorophore if sufficiently close for FRET (~10 nm). This results in the emission of light at 665 nm.

Plasminogen activator inhibitor-1 (PAI-1) is a single chain glycoprotein of 50 kDa. PAI-1 is secreted and is mainly produced by the endothelium, liver, and adipose tissue. It is also produced by certain tumours. PAI-1 activity is tightly regulated on the transcriptional level by transforming growth factor β. PAI-1 is the principal inhibitor of tissue-type and urokinase-type plasminogen activators (tPA and uPA), which convert plasminogen to plasmin. Congenital PAI-1 deficiency can cause hemorrhagic diathesis. PAI-1 is present in larger amounts in various pathologies, such as in a number of cancers or obesity. In breast cancer, high levels of PAI-1 are associated with a high risk of recurrence.