Calibrator/control for simultaneous assay of proteins...

G - Physics – 01 – N

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G01N 33/566 (2006.01) G01N 33/573 (2006.01) G01N 33/68 (2006.01)

Patent

CA 2711517

Disclosed herein are compositions and methods comprising two or more proteins in which at least one of the proteins has been altered to reduce their mutual recognition and binding. Such compositions are useful as reference, calibrators or controls in methods and assays for determining the amount of one or more of the proteins that may be present in a sample of interest or in confirming the presence of one or more of the proteins in the sample. More particularly, it relates to compositions and methods comprising altered placental growth factor-1 (P1GF-1) and soluble fms-like tyrosine kinase (sFlt-1) and methods for determining the amount or confirming the presence of sFlt-1 and/or P1GF-1 in a sample of interest.

L'invention concerne des compositions et procédés incluant deux protéines ou plus, au moins une des protéines ayant été modifiée pour réduire leur reconnaissance et liaison mutuelles. De telles compositions sont utiles en tant que calibrateurs ou témoins de référence dans des procédés et des dosages pour déterminer la quantité d'une ou plusieurs des protéines qui peuvent être présentes dans un échantillon d'intérêt ou pour confirmer la présence d'une ou plusieurs protéines dans l'échantillon. Plus particulièrement, l'invention concerne des compositions et des procédés incluant le facteur de croissance placentaire 1 (PlGF-1) modifié et la tyrosine kinase de type fms soluble (sFlt-1), et des procédés pour déterminer la quantité ou confirmer la présence de sFlt-1 et/ou PlGF-1 dans un échantillon d'intérêt.

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