摘要:
1. An assay kit for use in a method of quantifying a multimeric free light chain in a sample the method comprising: (i) treating the multimeric free light chain with a separating agent selected to convert at least a portion of the multimeric free light chain into monomeric free light chain; (ii) binding the free light chain to a free light chain-specific binding agent; (iii) comparing the amount of binding of the free light chain to the free light chain-specific binding agent to a calibration curve, wherein the calibration curve is obtained (i) by binding the free light chain-specific binding agent to one or more predetermined amounts of separating agent treated free light chain, prior to contacting with free light chain-specific binding agent or (ii) by binding the free light chain-specific binding agent to a predetermined amount of substantially monomeric free light chain; and (iv) determining an amount of the multimeric analyte in the sample, the kit comprising a free light chain specific binding agent and a separating agent for converting at least a portion of a free light chain analyte into monomeric free light chain.
摘要:
There is described herein a method for the electrochemical quantification of a protein analyte in sample, comprising: providing one or more electrode(s), each comprising at least one peptide attached to its surface, the peptide being the protein or a fragment thereof; contacting the sample and electrode with an antibody in the presence of a redox reporter, wherein the antibody is capable of binding to each of the protein analyte and the peptide on the electrode; measuring an electrochemical signal generated by the redox reporter when a potential is applied; quantifying the protein analyte by comparing the electrochemical signal generated with a control, wherein the electrochemical signal is indirectly proportional to the amount of protein analyte in the sample.
摘要:
Methods are provided for determining the presence of an analyte present in a liquid sample involving: contacting the liquid sample with a predetermined amount of an analogue of the analyte and an excess of a first binding moiety, wherein the first binding moiety is capable of binding each of the analyte and the analogue independently; contacting the mixture with a second binding moiety; and determining the level of a signal indicative of the presence of the analogue-first binding moiety complex bound to the second binding moiety, wherein if the level of the signal determined is lower than the level of a maximum signal determined when no analyte is present, then analyte is present in the sample. Corresponding kits are also provided.
摘要:
The present invention relates to a saccharide selected from the group consisting of: €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ{B(E)CD} €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ{(E)CDAB}n €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ{AB(E)CD}n Wherein A, B, C, E, D and n are as defined in claim 1. The invention also relates to derivatives thereof, pharmaceutical compositions comprising said derivatives, and kit for the diagnostic of Shigella flexneri type 2a infection comprising said derivatives.
摘要:
The present invention provides an expression vector encoding monospecific or bispecific fusion protein. In one embodiment the expression vector encodes a monospecific fusion protein, which vector comprises a recombinant monospecific single chain cassette comprising a DNA sequence encoding a first binding domain capable of binding a cell surface antigen. In another embodiment the expression vector encodes a. bispecific fusion protein, which vector comprises a recombinant bispecific single chain cassette comprising a DNA sequence encoding a first binding domain capable of binding a cell surface antigen and a DNA sequence encoding a second binding domain capable of binding a cell surface antigen, each domain capable of binding a different antigen. The present invention also provides a method for producing a biologically active monospecific or bispecific fusion protein in a mammalian cell. This method comprises: (a) transfecting the mammalian cell with the recombinant expression vector of the invention; (b) culturing the mammalian cell so transfected in step (a); and (c) recovering the biologically active bispecific fusion protein so as produced by the cultured mammalian cell.
摘要:
The present invention relates to a method for the quantitative release of natural or recombinant proteins, polypeptides or peptides (thermostable immunoligands) able to bind to the Fc-part of immunoglobulins (antibodies, in particular of the IgG class and primarily becoming bound outside the paratope) from complexes in various sample matrixes in order to make these released natural or recombinant proteins, polypeptides or peptides quantitatively available in immunochemical assays and to keep them quantitatively available. The method is characterized by mixing the sample with reagent compound that is able to bind non-specifically to immunoglobulins, and thereafter subjecting the sample to a heat treatment step followed by a cooling step.
摘要:
A method for preparing a blood fluid sample substantially free from red blood cells (RBCs) is disclosed. The method involves applying whole blood to a solid support matrix which contains reagent such as antibodies or their immunologically reactive fragments that are directed against RBCs or their components. The invention further comprises a method and device for the testing of analytes in blood. Whole blood is applied to the device, which then separates the RBCs from the plasma. The device further contains zones and and reagents for analysis of the plasma.