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Fitc mouse isotype control

Manufactured by BD
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The FITC Mouse Isotype control is a laboratory reagent used to establish the appropriate level of fluorescence in flow cytometry experiments. It serves as a control to determine the background fluorescence levels for a specific fluorochrome-conjugated antibody.

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2 protocols using fitc mouse isotype control

1

Flow Cytometric Analysis of MHCI Expression

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Cells were incubated with trypsin for 3 min in order to harvest them. The pellets were washed, spun at 1200 rpm for 5 min, and re-suspended in 1% BSA in 1X PBS incubation buffer. Cells were spun and treated with mouse Fc block (BD Biosciences, NJ, USA, cat#: 553142) for 20 min. Either FITC anti-mouse MHCI antibody (BD Biosciences, NJ, USA, cat#: 553565) or its corresponding FITC Mouse Isotype control (BD Biosciences, NJ, USA, cat#: 553456) was added to cells and allowed to incubate for 1 h. The samples were fixed with 2% paraformaldehyde for 30 min at 4 °C, washed, and re-suspended in 1X PBS. Analysis was done using the BD FACs instrumentation and software version 7.0 (BD Biosciences, NJ, USA).
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2

Measurement of Fetal Hemoglobin Expression in Erythroid Progenitors

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Cultured erythroid progenitor cells on day 14 of phase 2 were analyzed for the fraction of cell expressing HbF by immunofluorescent staining and flow cytometry. The cells were fixed with 3% formaldehyde (Sigma) in PBS/0.1% BSA for 20 minutes at room temperature. The cells were then permeabilized with 0.5% Saponin (Sigma) in PBS/0.1% BSA for 10 minutes. Following a wash, the cells were stained for 30 minutes with a PE-conjugated mouse anti-human HbF antibody or PE mouse Isotype Control (BD Biosciences, San Jose, CA). The samples were analyzed using a Flow Cytometer (FACScan, BD Biosciences, San Jose, CA) and CellQuest software (BD Biosciences, San Jose, CA). The fraction of F-cells was determined by setting gates based on unstained isotype and compared between untreated control cells and cells treated with the test compounds from the same subjects.
The cells were also stained with FITC mouse anti-human CD235a (glycophorin A) and FITC mouse Isotype Control (BD Biosciences, San Jose, CA) to determine the maturation of erythroid progenitor cells.
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