Flash Invriezen en Cryosectioning E12.5 hersenen van muizen

Published 5/28/2007
13 Comments
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Biology

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Summary

Aangetoond in deze video zijn de technieken voor flash invriezen en snijden embryonale hersenweefsel van de muis. Nuttige tips voor het gebruik van de cryostaat worden gegeven, waaronder het oplossen van problemen methoden die gebruikt kunnen worden tijdens het snijden om ervoor te zorgen dat de resulterende weefsel secties zijn vrij van scheuren en andere vervormingen.

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Currle, D. S., Monuki, E. S. Flash Freezing and Cryosectioning E12.5 Mouse Brain. J. Vis. Exp. (4), e198, doi:10.3791/198 (2007).

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Abstract

Protocol

  1. Fix weefsel in 4% paraformaldehyde in PBS voor de gewenste tijd.
  2. Sucrose trekken weefsel (cryoprotection)
    1. Maak 30% sucrose-oplossing in PBS w / v in 2059 buis.
    2. Spoel weefsel 3x in PBS (~ 5 min met schommelen).
    3. Plaats weefsel in 30% sucrose oplossing. Weefsel zal niet zinken.
    4. Plaats het weefsel in 4 ° C 's nachts, of totdat het is gezonken.
  3. Label juiste grootte cryomold met informatie en oriëntatie.
  4. Vul cryomold met oktober (vermijd luchtbellen).
  5. Overdracht weefsel oktober bad en coaten met oktober
  6. Overdracht weefsel LGO cryomold.
  7. Orient het weefsel onder de microscoop.
  8. Giet vloeibaar stikstof in plastic petrischaal.
  9. Snel en zorgvuldig lager het weefsel in cryomold in de stikstof. (Niet onderdompelen de top van de cryomold.)
  10. Wanneer de LGO solide is wit, plaats de bevroren weefsel in -80 ° C vriezer voor de opslag.
  11. Evenwicht weefsel tot ~ 20 ° C gedurende ten minste 30 minuten. voorafgaand aan snijden.

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Materials

Name Company Catalog Number Comments
Tissue-Tek Cryomold Ted Pella, Inc. 27181
O.C.T. Ted Pella, Inc. 27050
Sucrose solution 30% sucrose solution in PBS w/v
paraformaldehyde 4% paraformaldehyde in PBS

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Comments

13 Comments

  1. great! thanks a lot.

    Reply
    Posted by: Anonymous
    September 25, 2007 - 2:01 PM
  2. The presentation was wonderful and I learned more from this video than what my conservative collegues in the lab explained me. Thanks a lot

    Reply
    Posted by: Anonymous
    May 29, 2008 - 4:58 PM
  3. I'm having some issues washing off the OCT with BPS from the slides. - I did some retrograde staining of peripheral nerves and I cross sectioned the spinal cord of mice-
    the problem is that as I add PBS drop by drop, or as I place the slide into plate with PBS liquid layer my samples keep falling off the slide..
    Any ideas? because I'm running out of them
    e-mail me please: jccs_85@hotmail.com

    Reply
    Posted by: Anonymous
    July 2, 2009 - 9:35 AM
  4. This is a great video demonstrating how to cryosection brain that will certainly help me with my future studies. I was wondering, is it always necessary and/or desirable to fix the brain with paraformaldahyde prior to cryoprotecting with sucrose? I seem to recall hearing for some applications, such as IHC, paraformaldahyde fixation may disrupt the antibody/antigen interaction for certain antibodies used. Would someone be willing to comment on this?

    Reply
    Posted by: Anonymous
    July 8, 2009 - 8:18 PM
  5. send me an e-mail at spencer.currle@stjude.com

    Reply
    Posted by: Anonymous
    July 9, 2009 - 10:32 AM
  6. This is a great video demonstrating how to cryosection brain that will certainly help me with my future studies. I was wondering, is it always necessary and/or desirable to fix the brain with paraformaldahyde prior to cryoprotecting with sucrose? I seem to recall hearing for some applications, such as IHC, paraformaldahyde fixation may disrupt the antibody/antigen interaction for certain antibodies used. Would someone be willing to comment on this?

    Reply
    Posted by: Anonymous
    July 9, 2009 - 4:42 PM
  7. I have the same question as Shelly. Some applications require fixing tissue after cryosectioning. Do you have a protocol for this?

    Reply
    Posted by: Anonymous
    September 20, 2010 - 3:03 PM
  8. Hello, my name is Xiang Weng, I am a student in Long Island University, department of Biomedical Science, I want to learn cryosectioning, thank you.

    Reply
    Posted by: Xiang W.
    October 5, 2012 - 11:24 AM
  9. Hello, my name is Xiang Weng, I am a student in Long Island University, department of Biomedical Science, I want to learn cryosectioning, thank you.

    Reply
    Posted by: Xiang W.
    October 5, 2012 - 11:35 AM
  10. I have looked all over for the answer but I cannot find it: How many seconds (or how long in general) dŒs it take to flash freeze a serum lab sample using ethanol and dried ice? Thanks!

    Reply
    Posted by: Michele K.
    April 3, 2013 - 8:51 PM
  11. Hello, i am Kudirat, i am a student from University of Barcelona, department of Analytical Chemistry but basically I am in research area of Chemometric. Currently, we are working on a project where we want to get cryosections of Daphnia magna.
    Here are what we have done:
    1 ) We prepare the sample embedding it with 100% OCT, and flash freezing with Liquid Nitrogen directly.
    2) Finally we cut with the microtome cryostat between 12-20 um, which was not sucessful.

    What we have not done.
    1) Fix the sample. This is because we thought it might affect in our results since we are planning to acquire images with these cryosections in FT-IR Spectroscopy.

    At this moment we are planning to try chemical fixation, any suggestions would be greatly appreciated since we have little idea of biology.

    Thank you.


    Reply
    Posted by: Anonymous
    March 14, 2017 - 6:01 AM

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