License: This is an open access protocol distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited
Protocol status: Working
We use this protocol and it's working
Created: June 06, 2024
Last Modified: June 18, 2024
Protocol Integer ID: 101845
Keywords: ASAPCRN
Funders Acknowledgement:
ASAP
Grant ID: 020616
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Abstract
This protocol outlines methods used for the preparation of in vitro models for fluorescent imaging including primary rat and mouse hippocampal cultures treated with PFFs.
Image Attribution
Maria Iuliano -60x image of rat hippocampal neurons (DIV28) after 7-day treatment with PFFs. Map2 (Blue) and phopsho-a-syn Ser129 (green)
Guidelines
Parameters used in this protocol may be optimized and modified for individual use depending on experimental needs.
Materials
1% SDS for PFF inactivation
4% PFA 4% sucrose in 1x PBS
1x PBS
ICC Buffer: 5% NGS in 1x PBS
ICC Blocking Buffer: 5% NGS 0.3% Triton-X in 1x PBS\
When working with PFFs, it is best to follow proper safety precautions and wear appropriate PPE, including lab coat, gloves, sleeve guards, safety glasses or face shield, and N95 or FFP2 mask.
Inactivation and disposal of PFFs and PFF-contaminated items can be done using 1% SDS as described in literature.
Collect and dilute solutions into 10vol 1% SDS for 01:00:00at Room temperature
Discard used tips into primary collection container with 1% SDS
Inactivated liquid can be discarded with liquid waste
Discard inactivated items in primary container into biohazard
Wipe surfaces or contaminated tools down completely with 1% SDS, followed by water, then EtOH
Before start
Please read safety guidelines ahead of working with PFFs
Fixation and Immunocytochemistry (Fluorescence)
Fixation and Immunocytochemistry (Fluorescence)
4h 30m
In a cell culture hood remove media and wash briefly with 1x PBS.
2m
20 rpm, Room temperature , 00:15:00 Fix using 4% PFA 4% sucrose in 1xPBS with gentle rocking/shaking.
Mount coverslips onto microscope slides using Aqua-Poly/MountPolysciences, Inc.Catalog #18606-100 or preferred mounting medium.
5m
Let cure 48:00:00 before imaging
2d
Citations
Bousset L, Brundin P, Böckmann A, Meier B, Melki R. An Efficient Procedure for Removal and Inactivation of Alpha-Synuclein Assemblies from Laboratory Materials.