El inmunoensayo quimioluminiscente (CLIA) con partículas magnéticas (MP) es un método analítico que combina la flexibilidad de las microesferas magnéticas con la sensibilidad y especificidad del CLIA. En lugar de inmovilizar proteínas o anticuerpos dentro de la placa de pocillos, perlas magnéticas proporcionan un aumento significativo de la superficie de contacto de la muestra, la eficacia de la captura y las capacidades de automatización. Por ello, la MPCLIA se está adoptando con frecuencia en el diagnóstico de enfermedades, la monitorización de reacciones químicas y muchos otros campos de investigación.
Además del uso de perlas magnéticas como andamiaje base, la mayor desviación de MPCLIA respecto a ELISA tradicional es la detección mediante quimioluminiscencia. Utilizando una reacción química para excitar sustancias como la peroxidasa de rábano picante (HRP) y el éster de acridinio (AE), se liberan fotones que pueden medirse utilizando un lector de quimioluminiscencia especializado. En comparación, los métodos CLIA han demostrado a menudo una mayor sensibilidad, especificidad y rangos lineales que los ELISA tradicionales.
Chemiluminescence Detection Mechanism
Colorimetric (ELISA) Detection Mechanism
| Nº de ensayo | Perlas magnéticas | Muestra 1 | Muestra 2 | Marcador | Solución de sustrato |
|---|---|---|---|---|---|
| 1 |
Protein A-coupled Magnetic Beads (Cat. No. MPC-A001) |
Human Antibody | Biotinylated non-Fc tag protein |
Streptavidin-Acridine ester (Cat. No. STN-NA114) |
Substrate Solution(AE Marker) (Cat. No. ABK-001) |
| 2 | hFc tag protein | ||||
| 3 |
Protein G-coupled Magnetic Beads (Cat. No. MPC-A002) |
Human/Mouse Antibody | Biotinylated non-Fc tag protein | ||
| 4 | Fc tag protein | ||||
| 5 |
Anti-His-coupled Magnetic Beads (Cat. No. MPC-A005) |
His tag protein | Biotinylated non-His tag protein | ||
| 6 | Human antibody |
Anti-Human IgG-Acridine ester (Cat. No. AHG-Y69) |
|||
| 7 | hFc tag protein | ||||
| 8 |
Anti-Mouse IgG-coupled Magnetic Beads (Cat. No. MPC-A003) |
Mouse antibody | Biotinylated non-mFc tag protein |
Streptavidin-Acridine ester (Cat. No. STN-NA114) |
|
| 9 | mFc tag protein | ||||
| 10* | Mouse antibody | hFc tag protein |
Anti-Human IgG-Acridine ester (Cat. No. AHG-Y69) |
||
| 11* | mFc tag protein | Human antibody | |||
| 12* | hFc tag protein | ||||
| 13 |
Streptavidin-Magnetic Beads (recommended for MPCLIA) (Cat. No. MPC-A006) |
Biotinylated non-hFc tag protein | Human antibody | ||
| 14 | hFc tag protein | ||||
| 15 | Biotinylated non-mFc tag protein | Mouse antibody |
Anti-Mouse IgG-Acridine ester (Cat. No. AMG-S163) |
||
| 16 | mFc tag protein | ||||
| 17 |
Anti-Human IgG-coupled Magnetic Beads (Cat. No. MPC-A004) |
Human antibody | mFc tag protein | ||
| 18 | hFc tag protein | ||||
| 19* | hFc tag protein | Mouse antibody | |||
| 20* | Human antibody | Biotinylated non-hFc tag protein |
Streptavidin-Acridine ester (Cat. No. STN-NA114) |
||
| 21* | hFc tag protein |
Immobilized 0.04 μg /Test of Biotinylated Human PD-1, Avitag,His Tag (recommended for biopanning) (Cat. No. PD1-H82E4) to the Streptavidin-Acridine ester (Cat. No. STN-NA114, 0.008 μg /Test), incubated with 100 μL /Test of Human PD-L1, Fc Tag (Cat. No. PD1-H5258) at increasing concentration coupled to Protein A-coupled Magnetic Beads (recommended for MPCLIA) (Cat. No. MPC-A001) (10 μg beads/Test). Detection was performed with sensitivity of 3.125 ng/mL in Magnetic Particle Chemiluminescence immunoassay (MPCLIA) (KEYSMILE, SMART 6500S) (QC tested).
| Cat. No. | Product Description |
|---|---|
| PD1-H82E4 | Biotinylated Human PD-1 / PDCD1 Protein, Avitag™,His Tag (recommended for biopanning) (MALS verified) |
| STN-NA114 | Streptavidin Protein-Acridine ester (MALS verified) |
| PD1-H5258 | Human PD-L1 / B7-H1 Protein, Fc Tag (MALS verified) |
| MPC-A001 | Protein A-coupled Magnetic Beads (recommended for MPCLIA) |
Immobilized 0.04 μg /Test of Biotinylated Human PD-1, Avitag,His Tag (recommended for biopanning) (Cat. No. PD1-H82E4) to the Streptavidin-Magnetic Beads (recommended for MPCLIA) (Cat. No. MPC-A006, 20 μg beads/Test), incubated with 100 μL /Test of Human PD-L1, Mouse IgG1 Fc Tag, low endotoxin (Cat. No. PD1-H52A3) at increasing concentration coupled to Anti-Mouse IgG-Acridine ester (Cat. No. AMG-S163, 0.04 μg /Test). Detection was performed with sensitivity of 1.5625 ng/mL in Magnetism particulate chemiluminescence immunoassay (MPCLIA) (KEYSMILE, SMART 6500S) (QC tested).
| Cat. No. | Product Description |
|---|---|
| PD1-H82E4 | Biotinylated Human PD-1 / PDCD1 Protein, Avitag™,His Tag (recommended for biopanning) (MALS verified) |
| MPC-A006 | Streptavidin-Magnetic Beads (recommended for MPCLIA) |
| PD1-H52A3 | Human PD-L1 / B7-H1 Protein, Mouse IgG1 Fc Tag, low endotoxin (MALS verified) |
| AMG-S163 | Anti-Mouse IgG-Acridine ester (MALS verified) |
Immobilized 0.04 μg /Test of Biotinylated Human PD-1 Protein, Avitag,His Tag (Cat. No. PD1-H82E4) to the Streptavidin-Magnetic Beads (recommended for MPCLIA) (Cat. No. MPC-A006, 20 μg beads/Test), incubated with 100 μL /Test of Human PD-L1, Fc Tag (Cat. No. PD1-H5258) at increasing concentration coupled to Anti-Human IgG Antibody-Acridine ester (Cat. No. AHG-Y69, 0.04 μg /Test). Detection was performed with sensitivity of 0.488 ng/mL in Magnetism particulate chemiluminescence immunoassay (MPCLIA) (KEYSMILE, SMART 6500S) (QC tested).
When used the Chemiluminescent Substrate Solution (AE Marker) (Cat. No. ABK-001) in a sandwich MPCLIA Assay for detection of SARS-CoV-2, The Biotinylated Anti-SARS-CoV-2 Nucleocapsid Antibody, Mouse IgG1 (Cat. No. NUN-BM266) coupled Streptavidin-Magnetic Beads (recommended for MPCLIA) (Cat. No. MPC-A006) was incubated with Acridine Ester-Labeled Anti-SARS-CoV-2 Nucleocapsid Antibody, Chimeric mAb, Human IgG1 (AM224) (Cat. No. NUN-M224) and treated with SARS-CoV-2 Nucleocapsid protein, His Tag (Cat. No. NUN-C5227) at increasing concentration, detection was performed using with sensitivity of 97.7 pg/mL in Magnetism particulate chemiluminescence immunoassay (MPCLIA) (KEYSMILE, SMART 6500S) (QC tested).
When used the Chemiluminescent Substrate Solution (HRP Marker) (Cat. No. ABK-002) in a sandwich CLEIA Assay for detection of Human IFN-gamma, immobilized Monoclonal Anti-IFNγ antibody, Human IgG1 at 2 μg/mL, add increasing concentrations of Human IFN-gamma, premium grade (Cat. No. IFG-H4211) and then add Biotinylated Biotinylated Monoclonal Anti-IFNγ antibody, Human IgG at 0.05 μg/mL. Detection was performed using Streptavidin-HRP, Horseradish peroxidase conjugated Streptavidin (Cat. No. STN-NH913) with sensitivity of 7.8 pg/mL.
Immobilized 0.04 μg /Test of Biotinylated Human PD-1, Avitag,His Tag (recommended for biopanning) (Cat. No. PD1-H82E4) to the Streptavidin-Acridine ester (Cat. No. STN-NA114, 0.008 μg /Test), incubated with 100 μL /Test of Human PD-L1, Fc Tag (Cat. No. PD1-H5258) at increasing concentration coupled to Protein A-coupled Magnetic Beads (recommended for MPCLIA) (Cat. No. MPC-A001) (10 μg beads/Test). Detection was performed with sensitivity of 3.125 ng/mL in Magnetism particulate chemiluminescence immunoassay (MPCLIA) (KEYSMILE, SMART 6500S) (QC tested).
The MPCLIA assay shows that Protein G-coupled Magnetic Beads (recommended for MPCLIA) (Cat. No. MPC-A002) is stable at 37°C for 10 days.
The MPCLIA assay shows that Anti-Human IgG-coupled Magnetic Beads (recommended for MPCLIA) (Cat. No. MPC-A004) is stable after freezing and thawing 3 times.
The MPCLIA assay shows that Anti-His Tag-coupled Magnetic Beads (recommended for MPCLIA) (Cat. No. MPC-A005) is stable at 37°C for 10 days.