Human G-CSF Magnetic Luminex® Performance Assay
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Human G-CSF Magnetic Luminex® Performance Assay Summary
| Panel | Luminex Performance Human Cytokine Panel A |
| Assay Type | Magnetic bead-based multiplex assay for the Luminex® platform |
| Format | 1 x 96-well microplate and Magnetic antibody-coated beads |
| Species | Human |
| Analytes Detected | Please see analyte list in assay customization tool below. |
| Performance Validation | Our Luminex High Performance Assays undergo our most extensive validation testing. All Luminex High Performance Assay Panels are validated for use with serum and plasma samples. Some High Performance Assays are additionally validated for cell culture supernatants, milk, saliva, or urine, as indicated on the individual product data sheets. Luminex High Performance Assays are tested for sensitivity (three-quarters the low standard), intra-assay precision, inter-assay precision, and to ensure assay linearity for validated sample types. Recovery values for individual samples in validated sample types are also tested. Validation data for each analyte can be found in the product datasheet. |
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Magnetic Luminex High Performance Assays are flexible bead-based multiplex assays. They allow up to 50 user-defined target analytes to be simultaneously profiled using cell culture supernates, serum, or plasma samples. Some panels are also validated with human milk, saliva, and/or urine samples.
- Simultaneously profile Human G-CSF with up to analytes of your choice in one sample
- Magnetic format allows for easier wash steps
- Undergoes similar validation testing as Quantikine® ELISA Kits
- Precise and Specific
- Requires a small sample volume (<50 µL)
- Run your assay in just 3-5 hours
- Mass-calibrated standards for consistent results with every new lot of material
- Enough reagents for one 96-well plate
- Standard Cocktail(s)
- Bead Diluent
- Biotin Antibody Diluent
- Calibrator Diluent
- Wash Buffer
- Streptavidin-PE
- One flat-bottom 96-well Microplate
- Foil Plate Sealers (4)
- Mixing Bottle
- Standard Value Card**
**A standard curve must be generated each time an assay is run, utilizing values from the Standard Value Card included in the Base Kit.
- User-mix antibody-coated Magnetic beads in individual vials
- User-mixed cocktail of biotinylated detection antibody
Precision
|
Intra-assay Precision (precision within an assay) - Three samples of known concentration were tested twenty times on one plate to assess intra-assay precision. |
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| Intra-Assay Precision | Inter-Assay Precision | |||||
|---|---|---|---|---|---|---|
| Sample | 1 | 2 | 3 | 1 | 2 | 3 |
| n | 20 | 20 | 20 | 25 | 25 | 25 |
| Mean (pg/mL) | 17.1 | 31.7 | 508 | 20.1 | 240 | 440 |
| Standard deviation | 1.2 | 2.1 | 10.9 | 1.9 | 33 | 22 |
| CV (%) | 7.1 | 5.3 | 2.1 | 9.5 | 13.9 | 4.9 |
Recovery
|
Samples containing and/or spiked with human G-CSF were evaluated for recovery. |
||||||
| Sample Type | Average % Recovery | Range (%) | ||||
|---|---|---|---|---|---|---|
| Cell culture supernate | 95 | 75-110 | ||||
| Serum | 102 | 88-113 | ||||
| EDTA plasma | 91 | 92-117 | ||||
| Heparin plasma | 88 | 77-101 | ||||
Linearity
|
Samples containing and/or spiked with human G-CSF were serially diluted to evaluate assay linearity. |
|||||||||
| Cell culture supernate | Serum | EDTA plasma | Heparin plasma | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1:2 | Average % of Expected | 103 | 109 | 106 | 113 | ||||
| Range (%) | 90-113 | 100-115 | 82-118 | 105-122 | |||||
| 1:4 | Average % of Expected | 110 | 107 | 107 | 114 | ||||
| Range (%) | 84-131 | 85-120 | 70-122 | 108-119 | |||||
| 1:8 | Average % of Expected | 114 | 113 | 117 | 102 | ||||
| Range (%) | 80-138 | 85-129 | 102-129 | 111-123 | |||||
Assays for the Luminex platform are offered as High Performance Assays or Assays. The Luminex High Performance Assays are fully validated panels with a focused selection of analytes. They are available in We Mix, You Mix, and Predetermined formats. The Luminex Assays allows for the maximum number of analytes in a multiplex and is supplied as a premixed kit. View a table comparing the features and benefits of these bead-based multiplex assays.
Magnetic Luminex High Performance Assays are designed for use with the Luminex MAGPIX CCD Imager. Alternatively, kits can be used with the Luminex 100/200™ or FLEXMAP 3D, dual laser, flow-based sorting and detection platforms.
Analyte-specific antibodies are pre-coated onto color-coded microparticles. Microparticles, standards, and samples are pipetted into wells and the immobilized antibodies bind the analytes of interest. After washing away any unbound substances, a biotinylated antibody cocktail specific to the analytes of interest is added to each well. Following a wash to remove any unbound biotinylated antibody, Streptavidin-Phycoerythrin conjugate (Streptavidin-PE), which binds to the biotinylated detection antibodies, is added to each well. A final wash removes unbound Streptavidin-PE and the microparticles are resuspended in buffer and read using the Luminex or Bio-Plex analyzer. One laser is bead-specific and determines which analyte is being detected. A magnet in the analyzer captures and holds the superparaMagnetic microparticles in a monolayer. Two spectrally distinct Light Emitting Diodes (LEDs) illuminate the beads. One LED identifies the analyte that is being detected and the second LED determines the magnitude of the PE-derived signal, which is in direct proportion to the amount of analyte bound. Each well is imaged with a CCD camera. Kits can also be used with Luminex 100/200 or a Bio-Rad Bio-Plex dual laser, flow-based systems.
Scientific Data
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Quantist software graph of signal intensity versus concentration for G-CSF in the Human Cytokine A Luminex Panel
Background: G-CSF
G-CSF (granulocyte-colony stimulating factor) is a secreted glycoprotein that regulates the proliferation, differentiation, and activation of neutrophilic granulocyte lineage cells. It also enhances M-CSF induced monocyte differentiation and the proliferation of Th2-inducing dendritic cells. G-CSF promotes the development of T cell immune tolerance as well as tissue recovery following myocardial infarction and cerebral ischemia. It signals through G-CSF R/CD114 on monocytes, neutrophils, megakaryocytes, platelets, myeloid progenitors, trophoblasts and placenta, endothelial cells, and various tumor cell types. Mutations in G-CSF R are associated with congenital neutropenia.
Citations for Human G-CSF Magnetic Luminex® Performance Assay
R&D Systems personnel manually curate a database that contains references using R&D Systems products. The data collected includes not only links to publications in PubMed, but also provides information about sample types, species, and experimental conditions.
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Citations: Showing 1 - 5
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Disharmonic Inflammatory Signatures in COVID-19: Augmented Neutrophils' but Impaired Monocytes' and Dendritic Cells' Responsiveness
Authors: Z Parackova, I Zentsova, M Bloomfield, P Vrabcova, J Smetanova, A Klocperk, G Mesežnikov, LF Casas Mend, T Vymazal, A Sediva
Cells, 2020-09-29;9(10):.
Species: Human
Sample Types: Serum
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Candidalysin activates innate epithelial immune responses via epidermal growth factor receptor
Authors: J Ho, X Yang, SA Nikou, N Kichik, A Donkin, NO Ponde, JP Richardson, RL Gratacap, LS Archambaul, CP Zwirner, C Murciano, R Henley-Smi, S Thavaraj, CJ Tynan, SL Gaffen, B Hube, RT Wheeler, DL Moyes, JR Naglik
Nat Commun, 2019-05-24;10(1):2297.
Species: Human
Sample Types: Cell Culture Supernates
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Patients with idiopathic recurrent miscarriage have abnormally high TGF�+ blood NK, NKT and T cells in the presence of abnormally low TGF� plasma levels
Authors: L Zhu, M Aly, RJ Kuon, B Toth, H Wang, H Karakizlis, R Weimer, C Morath, E Ibrahim, N Ekpoom, G Opelz, V Daniel
BMC Immunol., 2019-03-04;20(1):10.
Species: Human
Sample Types: Plasma
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Processing of Candida albicans Ece1p Is Critical for Candidalysin Maturation and Fungal Virulence
Authors: JP Richardson, S Mogavero, DL Moyes, M Blagojevic, T Krüger, AH Verma, BM Coleman, J De La Cruz, D Schulz, NO Ponde, G Carrano, O Kniemeyer, D Wilson, O Bader, SI Enoiu, J Ho, N Kichik, SL Gaffen, B Hube, JR Naglik
MBio, 2018-01-23;9(1):.
Species: Human
Sample Types: Cell Culture Supernates
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Plasma sCD14 as a biomarker to predict pulmonary exacerbations in cystic fibrosis.
Authors: Quon B, Ngan D, Wilcox P, Man S, Sin D
PLoS ONE, 2014-02-20;9(2):e89341.
Species: Human
Sample Types: Plasma
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The assay performed as expected with low % CV's
