Imaging Amyloid-Beta Plaques in Brain Tissue Sections by Immunolabeling and Curcumin Staining

0 weergaven3:14 min • May 29th, 2025

Loading...
$$\rightleftharpoonup{xx}$$ $$\longleftharp{xx}$$, $$\longrightharp{xx}$$,

Start with brain sections from a neurodegenerative mouse model.

Incubate with a detergent-supplemented blocking solution to increase tissue permeability and block non-specific binding. Discard the solution.

Introduce primary antibodies targeting amyloid-beta plaques. Incubate with agitation for antibodies to interact with amyloid-beta plaques, then wash.

Add red fluorophore-tagged secondary antibodies and incubate in the dark to allow the antibodies to interact.

Wash to remove unbound antibodies, followed by an alcohol wash.

Add curcumin, which binds beta-sheet-rich amyloids with high affinity, then wash.

Next, treat with increasing alcohol concentrations, dehydrating the brain sections. Add xylene to remove any traces of reagents.

Mount a section on a slide and observe under a fluorescence microscope.

Use a 590-nanometer wavelength laser to excite the red fluorophores on the secondary antibodies. Capture the image.

Switch to a 480-nanometer wavelength laser to excite the curcumin, emitting green fluorescence.

Overlay the images; red and green fluorescence colocalization confirms amyloid-beta plaque in the brain tissue.

For labeling of cryostat sectioned specimens with anti-A beta antibodies, wash the samples three times with fresh PBS per wash in individual wells of a 12-well plate before blocking any nonspecific binding with 10% normal goat serum in PBS and 0.5% Triton x-100 for one hour at room temperature.

At the end of the incubation, discard the blocking solution, and incubate the samples with A beta specific antibody overnight at 4 degrees Celsius and 150 rotations per minute. The next morning, wash the sections with three 10-minute washes in fresh PBS per wash followed by incubation with an appropriate secondary antibody conjugated with a red fluorophore for one hour at room temperature protected from light.

At the end of the incubation, wash the sections three times with PBS followed by one wash with 70% alcohol. After the alcohol wash, incubate the sections with 10 micromolar curcumin for 10 minutes at room temperature followed by three, one minute 70% alcohol washes.

After the last wash, dehydrate the sections with 90% and 100% alcohol for one minute per concentration, and clear the sections two times for five minutes per immersion with fresh xylene per incubation. Then mount and image the sections as demonstrated.

10:04

Imaging amyloïde weefsels gekleurd met verlichte geconjugeerd Oligothiophenes door hyperspectrale Confocal Microscopie en fluorescentie levensduur Imaging

Gerelateerde video's

0 Bekeken

09:31

Visualisatie van amyloïde β-deposito's in de menselijke hersenen met Laser Matrix-bijgewoonde desorptie/ionisatie massaspectrometrie Imaging

Gerelateerde video's

0 Bekeken

07:28

Volledige versus subregionale kwantificering van amyloïde-bètabelasting op hersensecties van muizen

Gerelateerde video's

0 Bekeken

06:02

Detectie van neuritische plaques in de ziekte van Alzheimer Mouse Model

Gerelateerde video's

0 Bekeken

01:21

Thioflavin-S Staining of Amyloid-Beta Aggregation in Cerebral Hypoperfused Mouse Brain Tissue

Gerelateerde video's

0 Bekeken

04:59

Visualization of Amyloid-Beta Peptides in Human Cortical Brain Slices

Gerelateerde video's

0 Bekeken

03:19

Visualization and Mapping of Methoxy-X04-Labeled Amyloid Plaques in an Alzheimer’s Disease Mouse Brain Section

Gerelateerde video's

0 Bekeken

10:52

Correlatieve Licht en Electron Microscopy om te studeren Microgliale Interacties met β-amyloïde plaques

Gerelateerde video's

0 Bekeken

07:47

lengte- In Vivo Imaging van de Cerebrovasculature: Relevantie voor CNS ziekten

Gerelateerde video's

0 Bekeken

10:15

Etikettering en beeldvorming van amyloïde plaques in hersenweefsel met behulp van de natuurlijke Polyphenol curcumine

Gerelateerde video's

0 Bekeken

Laatst bijgewerkt: 15 augustus 2026