hIL-4 QKit (1 Kit)
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hIL-4 QKit (1 Kit)

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品牌: R&D Systems
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    产品介绍
    产品信息

    Recovery

    The recovery of human IL-4 spiked to levels throughout the range of the assay in various matrices was evaluated.

    Sample TypeAverage % RecoveryRange %
    Cell Culture Media (n=8)9890-109
    Citrate Plasma (n=10)9485-109
    EDTA Plasma (n=10)10090-123
    Heparin Plasma (n=10)9584-121
    Serum (n=10)9882-111

    Linearity

    To assess the linearity of the assay, the following biological samples, spiked with high concentrations of IL-4, were diluted with the appropriate Calibrator Diluent and then assayed.
    Human IL-4 ELISA Linearity

    Scientific Data

    Human IL-4 ELISA Cell Culture Supernate Standard Curve

    Human IL-4 ELISA Serum/Plasma Standard Curve

    Assay Procedure

    Refer to the product for complete assay procedure.

    Bring all reagents and samples to room temperature before use. It is recommended that all samples, standards, and controls be assayed in duplicate.
    1.   Prepare all reagents, standard dilutions, and samples as directed in the product insert.
    2.   Remove excess microplate strips from the plate frame, return them to the foil pouch containing the desiccant pack, and reseal.

    3. 100 µL Assay Diluent
    4.   Add 100 µL of Assay Diluent to each well.

    5. 50 µL Standard, Control, or Sample
    6.   Add 50 µL of Standard, control, or sample to each well. Cover with a plate sealer, and incubate at room temperature for 2 hours.
    7.   Aspirate each well and wash, repeating the process twice for a total of 3 washes.

    8. 200 µL Conjugate
    9.   Add 200 µL of Conjugate to each well. Cover with a new plate sealer, and incubate at room temperature for 2 hours.
    10.   Aspirate and wash 3 times.

    11. 200 µL Substrate Solution
    12.   Add 200 µL Substrate Solution to each well. Incubate at room temperature for 20 minutes. PROTECT FROM LIGHT.

    13. 50 µL Stop Solution
    14.   Add 50 µL of Stop Solution to each well. Read at 450 nm within 30 minutes. Set wavelength correction to 540 nm or 570 nm.

    Human IL-4 Quantikine ELISA Kit Summary

    Assay Type
    Solid Phase Sandwich ELISA
    Format
    96-well strip plate
    Assay Length
    4.5 hours
    Sample Type & Volume Required Per Well
    Cell Culture Supernates (50 uL), Serum (50 uL), EDTA Plasma (50 uL), Heparin Plasma (50 uL), Citrate Plasma (50 uL)
    Sensitivity
    10 pg/mL
    Assay Range
    31.2 - 2,000 pg/mL (Cell Culture Supernates, Serum, EDTA Plasma, Heparin Plasma, Citrate Plasma)
    Specificity
    Natural and recombinant human IL-4
    Cross-reactivity
    < 0.5% cross-reactivity observed with available related molecules.< 50% cross-species reactivity observed with species tested.
    Interference
    No significant interference observed with available related molecules.
    背景
    别名
    B cell growth factor 1,BCDF,B-cell stimulatory factor 1,BCGF1,BCGF-1,binetrakin,BSF1,BSF-1,IL4,IL-4,IL-4B_cell stimulatory factor 1,IL4E12,interleukin 4,interleukin-4,Lymphocyte stimulatory factor 1,MGC79402,pitrakinra,Interleukin 4
    背景

    Background: IL-4

    IL-4 (Interleukin-4) is a cytokine that is primarily expressed by Th2-biased CD4+ T cells, mast cells, basophils, and eosinophils. It promotes cell proliferation, survival, and immunoglobulin class switch to IgG4 and IgE in human B cells, acquisition of the Th2 phenotype by naïve CD4+ T cells, priming and chemotaxis of mast cells, eosinophils, and basophils, and the proliferation and activation of epithelial cells. IL-4 plays a dominant role in the development of allergic inflammation and asthma. The type I receptor for IL-4, which is expressed on hematopoietic cells, is a heterodimer of the ligand binding IL-4 R? and the common ? chain (a shared subunit of the receptors for IL-2, -7, -9, -15, and -21). The type II receptor on nonhematopoietic cells consists of IL-4 R? and IL-13 R?1. The type II receptor also transduces IL-13 mediated signals.

    Long Name:
    Interleukin 4
    Entrez Gene IDs:
    3565 (Human); 16189 (Mouse); 287287 (Rat); 397225 (Porcine); 280824 (Bovine); 403785 (Canine); 574281 (Primate); 100302454 (Rabbit)
    Alternate Names:
    B cell growth factor 1; BCDF; B-cell stimulatory factor 1; BCGF1; BCGF-1; binetrakin; BSF1; BSF-1; IL4; IL-4; IL-4B_cell stimulatory factor 1; IL4E12; interleukin 4; interleukin-4; Lymphocyte stimulatory factor 1; MGC79402; pitrakinra
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    货号:
    D4050
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