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Erstellung und Pflege von Spinalganglien Neuronen in Compartmented Kulturen

1,2, 1,2

1Department of Pediatric Oncology, Dana Farber Cancer Institute, 2Department of Neurobiology, Harvard Medical School

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Cite this Article: Erstellung und Pflege von Spinalganglien Neuronen in Compartmented Kulturen

F. Pazyra-Murphy, M., A. Segal, R. Preparation and Maintenance of Dorsal Root Ganglia Neurons in Compartmented Cultures. J. Vis. Exp. (20), e951, doi:10.3791/951 (2008).

Abstract: Erstellung und Pflege von Spinalganglien Neuronen in Compartmented Kulturen

Neurons verlängern axonalen Prozessen, die weit vom Zellkörper entfernt werden, um Zielgewebe, wo target-derived growth Faktoren für das neuronale Überleben und die Funktion erforderlich sind, innervieren. Neurotrophine sind speziell erforderlich, um das Überleben und die Differenzierung von innervieren sensorischen Neuronen zu halten, aber die Frage, wie diese Ziel-derived Neurotrophine zum Zellkörper der Neuronen innervieren zu kommunizieren, hat eine Fläche von aktiver Forschung seit über 30 Jahren. Die am häufigsten akzeptierte Modell, wie Neurotrophin-Signale erreichen den Zellkörper schlägt vor, dass Signalisierung tragen dieses Signal retrograd entlang des Axons Endosomen. Um retrograden Transport Studie wurde eine Kultur, das ursprünglich von Robert Campenot, in dem Zellkörper von ihrer Axone isoliert entwickelt. Die Technik zur Herstellung dieser compartmented Kammern zur Kultivierung von sensorischen Neuronen rekapituliert die selektive Stimulation von Neuronen Terminals, die in vivo nach der Entlassung von Soll-derived Neurotrophine auftritt. Retrograde Signal-Ereignisse, Langstrecken-Mikrotubuli abhängig retrograden Transport benötigen haben wichtige Implikationen für die Behandlung von neurodegenerativen Erkrankungen.

Protocol: Erstellung und Pflege von Spinalganglien Neuronen in Compartmented Kulturen

Vorbereitung der Reagenzien

  1. Collagen-Beschichtung: Kollagen Mantel p35 Zellkulturplatten und in einem Ofen bei 37 ° C für 2 Tage vor dem Schmieren der Teiler. Die endgültige Konzentration von Kollagen sollten bei 0,71 mg / ml in .001 N HCl verdünnt werden. Dann fügen Sie 1 ml der Mischung pro Platte.
  2. Fett Lader: Um das Fett loader zu füllen, eine 60 ml Spritze muss zunächst mit Corning Vakuum Fett gefüllt werden. Verwenden Sie die Spritze mit dem Fett-Loader zu füllen, wickeln Sie es in Folie und dann Autoklaven für 45 Minuten.
  3. Teflon Teiler: die Teiler kann nach jedem Experiment wieder verwendet werden, sondern muss zuerst gründlich gereinigt werden. Entfernen Sie die Teiler von der Platte, wischen Sie alle verbleibenden Fett und in Schwefelsäure für 2 Tage. Nach dem Entfernen aus der Säure mit Wasser 3X, Kochen gründlich für 20 Minuten trocknen lassen, in ein Glas p100 Petrischale und Autoklaven für 20 Minuten.
  4. N2-Methylcellulose: abwiegen 1,5 g Methylcellulose und legen Sie es in einer 500ml Flasche. Fügen Sie einen Rührstab und Autoklaven für 20 Minuten auf dem Trockenen (ab diesem Zeitpunkt alle Arbeiten müssen steril sein). Als Nächstes fügen Sie 500 ml serumfreiem Medium (N 2), und rühren Sie in einem kalten Raum, bis sie sich auflöst. Aliquot in 50 mL konische und Einfrieren bei -20 ° C. Für die Arbeit Lager, Aliquot einer der 50 mL konische in 1 ml Tuben und bei -20 ° C.
  5. DRG-Medien: DMEM, 5% hitzeinaktiviertem Pferdeserum und 1% Penicillin Streptomycin.
  6. 100ng/mL DRGN Medien: Die Aktie Konzentration beider nerve growth factor (NGF) und brain-derived neurotrophen Faktor (BDNF) ist 1mg/ml. Verdünnen Sie jede der Neurotrophine 1:10.000 in den DRG-Medien. Kulturen können in NGF allein angebaut werden, dies ändert die Ergänzung von Neuronen, die in den Kulturen überleben.

    Hinweis: Bei Bedarf wird die Konzentration von (Cytosinarabinosid) AraC 1um und verwendet in einer Endkonzentration von 0.3uM. Dies hemmt das Wachstum von Schwann-Zellen und anderen Gliazellen.

  7. 10ng/ml DRGN Medien: Verdünnen Sie die 100ng/mL DRGN Medien (1:10) mit DRG-Medien.

    Abbildung 1


    Abbildung 1. Werkzeuge für die Set-up benötigt

Einrichten des compartmented Kammern (Beginn dieses Prozesses 1-2 Tage vor der Dissektion)

  1. Machen Sie einen Kratzer in der Mitte eines Kollagen beschichtet p35 Schüssel mit einer passiven Bewegung.
  2. Legen Sie 30ul der N2-Methylcellulose auf die Mitte des kratzen. Set Geschirr beiseite, bis Teiler ist gefettet.
  3. Bringen Sie eine 23-Gauge-Luer-Steckadapter, um das Fett-Loader. Fassen Sie die Teflon Teiler mit einem Paar 90 °-Winkel Hämostatika und legen Sie es mit dem Teiler nach oben unter dem Mikroskop. Verfolgen Sie die Trennlinie mit Fett dafür sorgen, dass jedes Mal, wenn Sie den Adapter an einem neuen Ausgangspunkt der Adapter in das Fett aus dem vorherigen Schritt eingefügt wird so platziert, dass es eine kontinuierliche Reihe von Fett (siehe Diagramm). Sobald das Fett auf die gesamte Teiler angewendet wird, drehen Sie einen der vorbereiteten p35 Gerichte auf den Kopf und legen Sie sie so die N2-Methylcellulose ist über dem mittleren Fach. Drücken Sie auf den Boden der Schale mit einer Pinzette. Achten Sie darauf, auf der Innenseite des Teilers in vier Ecken (oben links, unten rechts, oben rechts, unten links, im Diagramm durch "X" gekennzeichnet) drücken.

    Abbildung 2

    Abbildung 2: Schritte zum Einfetten der Teiler

    Hinweis: Es ist wichtig, fest genug drücken, so dass das Fett eine vollständige Abdichtung mit dem Teller macht, aber wenn zu viel Druck hinzugefügt wird, die Axone nicht in die Seitentaschen überqueren.

    Nehmen Sie den Hämostatika, umdrehen und Ausspannen der Teiler. Schließlich legen Sie die Schale mit dem Teiler fest unter dem Mikroskop mit Schwerpunkt auf der Unterseite der mittleren Fach angebracht. Mit der Fett-Loader, machen Sie eine kleine Barriere (.25 cm), so dass, wenn die Zellen in der mittleren Fach gestellt werden können sie nicht auslaufen.
  4. Nachdem mehrere Kulturen, Ort DRG Medien in jedem der seitlichen Fächern und in einen Inkubator, in dem die Zellen aufrechterhalten werden eingestellt. Lassen Sie den Kulturen für mehrere Stunden sitzen und prüfen Sie dann auf Dichtheit prüfen. Wenn das Medium in das mittlere Fach ausgelaufen sind, dann wird die Kultur unbrauchbar.

    Hinweis: Beim ersten Erlernen dieser Technik ist es wichtig, mehr Kulturen als für ein Experiment benötigt, da mehrere werden undicht.

    Abbildung 3

    Abbildung 3: "Good vs leaky" Kultur

Die Aufrechterhaltung DRG-Neuronen in compartmented Kulturen

  1. Tag 1: Ersetzen DRG Medien in den Seitentaschen mit 100ng/mL DRGN media + AraC. Führen Sie Dissektion und Zellen hinzufügen, um Fach-Center (100.000 Zellen).
  2. Tag 2: Add 10ng/ml media + AraC auf der Außenseite des Teflon Teiler, bis die Medien fließt über die Fett-Schranke und der Austausch Flüssigkeit mit der Fach-Center.
  3. Tag 3: Ersetzen Medien in den Seitentaschen zu 100ng/mL DRGN Weglassen des AraC und die Surround mit 10ng/ml DRGN Weglassen des AraC.
  4. Tag 6: Ersetzen Medien in den Seitentaschen zu 1ng/mL + AraC und die Surround mit DRG media + AraC.
  5. Tag 9: Verwenden Sie für Experimente.


    Abbildung 4

    Abbildung 4: IHC Bilder Zellkörper und Axone distal



    Hinweis: Beim Wechsel der Medien, ist es wichtig, die Flüssigkeit aus der Spitze der einzelnen Seitenfach absaugen. Auch ändern sich nie die Medien aus dem mittleren Fach selbst, sondern nur aus den Surround, und lassen Sie es über die Fett-Schranke in das Zentrum fließen.

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Discussion: Erstellung und Pflege von Spinalganglien Neuronen in Compartmented Kulturen

In diesem Video haben wir gezeigt, wie man sich vorbereiten und pflegen compartmented Kammern für den Einsatz in Kultivierung DRG-Neuronen. Alles richtig, dieses System Trennung der Zellkörper aus dem Axon, um Mechanismen, durch die Neurotrophine Signal über lange Axone zu studieren. Da es fluidische Trennung zwischen den Fächern, ermöglicht es zur selektiven Stimulation oder Behandlung von einem Fach, ohne die anderen Fächer berührt wird. Compartmented Kammer Kulturen unterstützt auch andere Zelltypen, einschließlich sympathischen Neuronen von der überlegenen Halsganglien, retinalen Ganglienzellen Neuronen und kortikalen Neuronen. Spatial Verständnis der Neurotrophin Signaltransduktion können neue Einblicke in Behandlungen von neurodegenerativen Erkrankungen bieten. Mehrere neurodegenerativen Erkrankungen, darunter Alzheimer, Chorea Huntington und Motoneuronerkrankung sind mit Defekten in axonalen Transport verbunden. Jüngste Studien haben mikrofluidischen Kammern statt dieser compartmented Kammern verwendet. Die mikrofluidischen Kammern 4,5 haben mehrere Vorteile für die Bildanalyse.

Frühere Studien haben die Fähigkeit dieser Kulturen eine Diffusion zwischen dem Axon und Zellkörper Fach 1,3,6 verhindern getestet. Dies kann leicht durch Zugabe von geringen Konzentrationen eines Farbstoffes wie Trypanblau, um ein Fach nur, und suchen Sie nach Diffusion des Farbstoffes getestet werden. Es sollte wenig oder keine Diffusion sichtbar innerhalb von 24 Stunden.

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Disclosures: Erstellung und Pflege von Spinalganglien Neuronen in Compartmented Kulturen

Acknowledgements: Erstellung und Pflege von Spinalganglien Neuronen in Compartmented Kulturen

Wir möchten Katharina Cosker und Stephanie Courchesne für hilfreiche Diskussionen danken.

Materials: Erstellung und Pflege von Spinalganglien Neuronen in Compartmented Kulturen

Name Type Company Catalog Number Comments
collagen Reagent BD Biosciences 354249
N2-methylcellulose 400CPS Reagent Sel-Win Chemicals
Teflon divider Other Tyler Research CAMP10 many other types of dividers are available
Pin rake Tool Tyler Research Camp-PR
Grease loader Tool Tyler Research Camp-GLSS
DMEM Reagent Fisher Scientific MT10017CV
NGF Reagent PeproTech Inc 450-01
BDNF Reagent PeproTech Inc 450-02
High vacuum grease Reagent Fisher Scientific 14-635-5D
AraC Reagent Sigma-Aldrich C-1768
23 gauge luer stub adapter Tool Fisher Scientific 427565
90° angle hemostats Tool Roboz Surgical Instruments Co. RS-7035

References: Erstellung und Pflege von Spinalganglien Neuronen in Compartmented Kulturen

1. Campenot, RB. Independent Control of the Local Environment of Somas and Neurites. Methods in Enzymology 58 302-7, (1979).

2. Watson, FL., et al. Neurotrophins use the Erk5 pathway to mediate a retrograde survival response. Nature Neuroscience 4 981-88, (2001).

3. Heerssen, HM., et al. Dynein motors transport activated Trks to promote survival of target-dependent neurons. Nature Neuroscience 7 596-603, (2004).

4. Taylor, AM., et al. A microfluidic culture platform for CNS axonal injury, regeneration and transport. Nature Methods 2 599-605, (2005).

5. Park JW., et al. Microfluidic culture platform for neuroscience research. Nat Protoc. 4 2128-36, (2006).

6. Ure DR., et al. Retrograde transport and steady-state distribution of 125I-nerve growth factor in rat sympathetic neurons in compartmented cultures. J Neuroscience 4 1282-90, (1997)

Ask the Author: Erstellung und Pflege von Spinalganglien Neuronen in Compartmented Kulturen

18 Comments

Hi

I have just watch your presentaion on the Preparation and Maintenance of Dorsal Root Ganglia Neurons in Compartmented Cultures and it was very impressive. I am intersted in the function of the methylcellulose, does it provide a space through which the axons can pass, do the cell bodies settle on the collagen surface.

Regards

Paul

1

Reply

Posted by: Paul MillnsNovember 19, 2008, 7:27 AM

Hi Paul-
Thank you for your comment.  The cell bodies do settle onto the collagen surface.  As for the small amount of N2-methylcellulose that is placed on the center of the scratch, the media acts as a space for the axons to extend easily on and the methylcellulose is used to thicken the media slightly. 

Good Luck,
Maria

1.1

Reply

Posted by: AnonymousDecember 15, 2008, 3:06 PM

Hi,

your method looks simple and powerfull.

It's possible to make an immuno staining without to remove the teflon divider? Does the divider cause troubles during immunofluorescence staining for example?

Regards

Giuseppe 

2

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Posted by: AnonymousDecember 13, 2008, 7:35 AM

Hi Giuseppe-
Thank you for your comment. Fix, wash and add antibodies as usual within the compartments for immunostaining. Remove the divider, carefully wipe away excess grease and coverslip before imaging.

Good Luck,
Maria

2.1

Reply

Posted by: AnonymousDecember 15, 2008, 3:52 PM

Hi Maria,

I had a question about immunostaining. So in reference to your above comment, you keep the teflon dividers in place when you fix and add antibodies, and only remove it at the end of immunostaining? Is anything else different?

Thanks,
Supraja.

2.1.1

Reply

Posted by: SuprajaOctober 22, 2010, 7:01 PM

Hi Supraja-
Yes, only remove the divider at the end of the immunostaining. Everything else is done exactly the same.

Good Luck,
Maria

2.1.1.1

Reply

Posted by: AnonymousOctober 25, 2010, 3:42 PM

Hi,

beautiful work, congratulations!

Have you tried to cultivate adult DRG also?

Best regards and good luck!

Otilia

4

Reply

Posted by: Otilia ObrejaFebruary 5, 2009, 6:34 AM

Hi Otilia-

Thank you for your comment.  We have not tried cultivating adult DRGs in this system.

 

Good Luck,

Maria

4.1

Reply

Posted by: AnonymousMarch 19, 2009, 12:03 PM

Dear Otilia,

I too was really impressed by Maria's work and wanted to use the technique for my work. I just wanted to let you know that I have been using adult DRGs in this system and it still works brilliantly.

Best regards,

Philippa

4.2

Reply

Posted by: AnonymousSeptember 2, 2009, 1:02 PM

Thanks a lot, Philippa!

4.2.1

Reply

Posted by: OtiliaJanuary 18, 2010, 4:08 PM

Hi,

I hvae not been able to watch the video.  Could you please email me  a copy.

Sincerely,

Supinder Bedi, Ph.D.

University of Texas, Houston

5

Reply

Posted by: Supinder BEdiFebruary 11, 2009, 3:39 PM

Hi,

We are very interested in your method, that’s great!


We have one question: on day1, how do you "perform dissection and add cells to center compartment (100,000cells)"? 

Can you please provide more details?

Best regards

Yi

7

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Posted by: Yi DingMarch 5, 2009, 3:52 PM

Hi

Amazing video; really impressive and well constructed. I'm hoping to use the compartmented culture system for some of my experiments and so am currently trying to set it up however as i hope to do immunostaining of the cultures I was just wondering whether you use just normal polystyrene cell culture dishes or glass-bottomed dishes/ dishes with a glass coverlip plated in it? If you use glass what thickness and type of glass do you use?

The reason I ask is I've been seeing whether I can coat glass coverslips with collagen in order to be able to detach them from the dishes and mount them onto microscope slides later however I don't seem to be able to coat the borosilicate glass coverslips that I have. I've tried all sorts of methods including your protocol here but it seems that the collagen doesn't want to stick to the glass. They are definitely degreased throughly therefore I was wondering whether it was an issue with the charge of the glass and whether there was a different sort of glass I should be using.

Any suggestions would be really appreciated.

Best regards, Philippa

8

Reply

Posted by: Philippa M.March 19, 2009, 7:25 AM

Hi Philippa-

Thank you for your comment.  We only use polystyrene cell culture dishes that have been coated with collagen.  It is impossible to make the necessary scratches on the glass.  We often do immunostaining and image with this system, however, there is another system, microfluidic chambers, that may give you higher quality images.

Good Luck,

Maria

 

8.1

Reply

Posted by: AnonymousMarch 19, 2009, 11:56 AM

Dear Philippa, I have seen the video and read your comment only yesterday, but maybe this can help: at www.mattek.com, you can order 35mm or 50mm dishes with a partially glass bottom (coverslip that you can even take out afterwards and that is either uncoated or coated with collagen or poly-D-lysine). We have been using them on a regular basis for live cell imaging and they're very useful. From my side, I was wondering if you made any progress with scratching glass dishes, because I would like to do this for my particular experiment. Best regards, Katrien

8.2

Reply

Posted by: Katrien J.August 28, 2009, 5:01 AM

Hi Katrien,

Thank you for your suggestions. In answer to your question unfortunately I wasn't able to scratch the glass coverslips. Unfortunately I think it would be a case of having to get them engraved independently. I've been using the polystyrene cell culture dishes since and although maybe the optics aren't as good as they could I'm actually still able to obtain very good images after immunostaining with the inverted microscope. So if this is similar to what you plan to do it might be worth a try. Best of luck.

Philippa

8.2.1

Reply

Posted by: PhilippaSeptember 2, 2009, 3:29 AM

Hi Philippa, thanks for your answer. Would it be possible to let me know what magnification objective you use and what kind of structures you are looking at, just to have an idea if this might work for me as well?
Thank you and best regards, katrien

8.2.1.1

Reply

Posted by: Katrien J.September 2, 2009, 3:38 AM

Of course: I work with a 20x magnification and take a series of consecutive images of the neurites that have extended into the side compartments in order to reconstruct the whole image and assess neurite outgrowth before and after a treatment. I would prefer to use 10x magnification but we don't have the lens for it. Hope that helps. Philippa

8.2.1.1.1

Reply

Posted by: PhilippaSeptember 2, 2009, 12:59 PM

Hi

Amazing video; really impressive and well constructed. I'm hoping to use the compartmented culture system for some of my experiments and so am currently trying to set it up however as i hope to do immunostaining of the cultures I was just wondering whether you use just normal polystyrene cell culture dishes or glass-bottomed dishes/ dishes with a glass coverlip plated in it? If you use glass what thickness and type of glass do you use?

The reason I ask is I've been seeing whether I can coat glass coverslips with collagen in order to be able to detach them from the dishes and mount them onto microscope slides later however I don't seem to be able to coat the borosilicate glass coverslips that I have. I've tried all sorts of methods including your protocol here but it seems that the collagen doesn't want to stick to the glass. They are definitely degreased throughly therefore I was wondering whether it was an issue with the charge of the glass and whether there was a different sort of glass I should be using.

Any suggestions would be really appreciated.

Best regards, Philippa

9

Reply

Posted by: Philippa M.March 19, 2009, 8:12 AM

Hi

Amazing video; really impressive and well constructed. I'm hoping to use the compartmented culture system for some of my experiments and so am currently trying to set it up however as i hope to do immunostaining of the cultures I was just wondering whether you use just normal polystyrene cell culture dishes or glass-bottomed dishes/ dishes with a glass coverlip plated in it? If you use glass what thickness and type of glass do you use?

The reason I ask is I've been seeing whether I can coat glass coverslips with collagen in order to be able to detach them from the dishes and mount them onto microscope slides later however I don't seem to be able to coat the borosilicate glass coverslips that I have. I've tried all sorts of methods including your protocol here but it seems that the collagen doesn't want to stick to the glass. They are definitely degreased throughly therefore I was wondering whether it was an issue with the charge of the glass and whether there was a different sort of glass I should be using.

Any suggestions would be really appreciated.

Best regards, Philippa

10

Reply

Posted by: Philippa M.March 19, 2009, 2:04 PM

Hi,

 

Could you please elaborate a bit more on the DRG dissection and how you get to 100,000 cells please

Thanks,

 

Gustavo Ayala

R. Clarence and Irene H Fullbright Chair in Pathology

Professor

Baylor College of Medcine

 

11

Reply

Posted by: G. AyalaMarch 24, 2009, 4:58 PM

hi,

thank you for the presentation,

your novel model for preparation of drg neurons seem to be very efficient.

can you please elaborate how did you get the neurons and how old was the rat fetus?

thanks ahead,

Amit Moran,

moranamit@gmail.com

 

 

12

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Posted by: moran amitMarch 30, 2009, 11:58 PM

It is very interesting. I am wondering regarding the use of NGF. You have used Recombinant human beta NGF. Is there any special reason you used human NGF? or is it ok that we can use rat NGF?

13

Reply

Posted by: AnandJune 23, 2009, 3:16 PM

Hi Anand-

We prefer to use the recombinant human NGF but it is certainly okay to use rat NGF.

Good Luck,
Maria

13.1

Reply

Posted by: AnonymousJune 30, 2009, 12:51 PM

Thanks for your presentation. Have you ever tried cultivating hippocampal neurons? If it 's, what did you coated with your dish, collagen or poly-l-lysine?

Regards


Mei

14

Reply

Posted by: MeiAugust 18, 2009, 4:35 PM

Hi Mei-

Sorry, we have never cultivated hippocampal neurons using this system. There is a paper, Ivins et al., 1998, that uses a modified compartmented culture system that you may find helpful.

Good Luck,
Maria

14.1

Reply

Posted by: AnonymousAugust 21, 2009, 1:39 PM

Dear colleges, thank you very much for nice performance and demonstration of this method!
I have a question. How do you think could I use this compartmented culture to investigated axonal degeneration. If I will add a substance under the investigation to axonal part of chamber, how could I be sure that this compound does not penetrate to cell body part?
Thank you very much for answer beforehand and good luck in your future experiment!!!

15

Reply

Posted by: Liudmila E.September 28, 2009, 9:17 AM

Hi Lula-
If set up properly (no leakage) these chambers are fluidically isolated.

Good Luck,
Maria

15.1

Reply

Posted by: AnonymousJanuary 13, 2010, 2:54 PM

Ok, how it could be isolated?: side parts and middle parts fluidically, if even neurites can pass through this barrier. That means that compounds (chemical substance) can do it also. am I wrong?

15.1.1

Reply

Posted by: AnonymousJanuary 14, 2010, 4:49 AM

Hi Maria,
I will like to confirm the concentration of collagen coating that you use have on the protocol (0,71mg/mL diluted in 0,001N HCl). In our lab we use collagen coating for cultures and the concentration is very less.
Regards
AleMorán

16

Reply

Posted by: AleMoranSeptember 28, 2009, 1:09 PM

Hi Alemor-
Yes, that is the correct concentration of collagen.
Good Luck,
Maria

16.1

Reply

Posted by: AnonymousJanuary 13, 2010, 2:39 PM

Thanks Maria,
I would like to ask you a new cuestion. Did you cut de needle to avoid de sharp point?
Regards

16.1.1

Reply

Posted by: aleMarch 30, 2010, 11:29 AM

Hi-
The adapter that we use has a blunt end. It's a 23 gauge luer stub adapter (Fisher cat #427565).
Good Luck,
Maria

16.1.1.1

Reply

Posted by: AnonymousMarch 30, 2010, 2:55 PM

Hi, It is quite interesting. I need some help in isolating DRG. I tried. But not able to identify them. Can you pls help me.
Thanks in advance.

17

Reply

Posted by: anandOctober 26, 2009, 3:44 PM

Hi Anand-
The DRGs are located along each side of the spinal cord. In the E15 rats, the DRGs are clearly visible as ganglia along the spinal cord. At older ages the DRGs are encased within the vertebrae.
Good Luck,
Maria

17.1

Reply

Posted by: AnonymousJanuary 13, 2010, 2:42 PM

Hi,
Great presentation!
I was wondering, what antibodies did you use for the IHC images?

Thanks,
Amy

18

Reply

Posted by: AnonymousDecember 1, 2009, 8:43 PM

Hi,

many thanks for posting this really helpful video. When you apply the grease on the divider do you work under a hood? If not, how do you maintain sterility? I have tried working outside a hood and I have had problem of contamination (all solutions, and tools have been either filtered or autoclaved)

Kind regards,

Ale

19

Reply

Posted by: AlessandroJanuary 13, 2010, 11:31 AM

Hi Ale-
It would be best if you set up the cultures in a dissecting hood if you are having problems with contamination. We use UV to sterilize the area but the hood that we work under has no air flow and is therefore not a completely sterile environment.

Good Luck,
Maria

19.1

Reply

Posted by: AnonymousJanuary 13, 2010, 2:51 PM

Hi
Beautiful work! And I have been tried to constructed the compartmented cultures for many times but failed .I don't know why. I wonder how do you get to 100,000 cells .Could you please elaborate a bit more on the DRG dissection .In my compartmented cultures ,there are only a few axons across the barrier and get to the distal compartment.I have tried it for many times but the results are the same.I guss if the cell differentiation is not good enough or something wrong with the applying grease.I have no idea .So i think if you can give me your email and I have many problems to ask you.My email is jjdongch@gmail .com. I am looking forward to your reply .Thank you!

20

Reply

Posted by: jingjing d.May 17, 2012, 7:39 AM

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