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    Immunohistochemical staining, vibratome sections

    Veerle Baekelandt, Joris Van Asselberghs

    Published: 2024-02-05 DOI: 10.17504/protocols.io.eq2lypnkqlx9/v1
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    Abstract

    This protocol outlines general procedures for Immunohistochemical staining, using vibratome sections.

    Before start

    This protocol uses floating sections in 24-well plate in 1X.

    Attachments

    Immunohystochemical_staining,_vibratome_sections.pdf

    Steps

    Quench Endogenous Peroxidase Activity

    1.

    Incubate samples in 1 x PBS 3% H2O2, for 0h 10m 0s at Room temperature on the wobbler (to quench endogenous peroxidase activity) using 500µL / well.

    2.

    Rinse with 0.1% (v/v).

    3.

    Rinse with 0.1% (v/v) for 0h 5m 0s on wobbler.

    4.

    Repeat: rinse with 0.1% (v/v) for 0h 5m 0s on wobbler.

    Primary Antibody Incubation

    5.

    Add 250µL (accordingly to the secondary Abs) 0h 40m 0s at Room temperature on wobbler.

    Note
    Dilution: 1st AB: TH Ab152 1/5000

    6.

    Rinse with 0.1% (v/v).

    7.

    Rinse with 0.1% (v/v) for 0h 5m 0s on wobbler.

    8.

    Repeat: rinse with 0.1% (v/v) for 0h 5m 0s on wobbler.

    Secondary Antibody Incubation

    9.

    Add 250µL for 0h 30m 0s at Room temperature on wobbler.

    Note
    Dilution: 2nd AB: SAR 1/300

    10.

    Rinse with 0.1% (v/v).

    11.

    Rinse with 0.1% (v/v) for 0h 5m 0s on wobbler.

    12.

    Repeat: rinse with 0.1% (v/v) for 0h 5m 0s on wobbler.

    Streptavidine-HRP complex Incubation

    13.

    Add 250µL for 0h 30m 0s at Room temperature on wobbler.

    Note
    Dilution: STRP-HRP 1/1000

    14.

    Rinse with 0.1% (v/v).

    15.

    Rinse with 0.1% (v/v) for 0h 5m 0s on wobbler.

    16.

    Repeat: rinse with 0.1% (v/v) for 0h 5m 0s on wobbler.

    DAB + H2O2

    17.

    Safety information
    Work on DAB Bench!

    Prepare DAB solution: 10mg for 25mL; dissolve and filter through 0.22 µm filter, add H2O2 just before use! Or Vector SG (TH).

    (Add 1.4µL for 5mL).

    18.

    Add 250µL (ON DAB BENCH!) . Allow reaction to proceed for a few minutes at Room temperature without wobbling .

    19.

    Rinse with 0.1% (v/v).

    20.

    Replace TBS Triton X-100 with PBS or 0.1% (v/v) in case sections are not to be mounted immediately. Store at 4°C.

    ½ PBS + ½ AD Rinse

    21.

    Briefly rinse sections in ½ PBS + ½ AD and mount on gelatin coated microscopy slides. Allow to dry for 0h 30m 0s in flow or couple of hours on bench.

    Dehydration

    22.

    Dehydrate samples in 70% (v/v) for 0h 5m 0s.

    23.

    Dehydrate samples in 90% (v/v) for 0h 5m 0s.

    24.

    Dehydrate samples in 100% (v/v) for 0h 5m 0s.

    25.

    Repeat: dehydrate samples in 100% (v/v) for 0h 5m 0s.

    26.

    Replace ethanol with Histoclear II for 0h 5m 0s.

    Mounting

    27.

    Mount coverslips on top of the slides with DPX and allow to dry 0h 30m 0s in the flow.

    28.

    Press out bubbles next morning.

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