John Runions |
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Do any of the plant biologists out there have experience using the Syto dyes from Molecular Probes to stain nuclei of living cells. In particular, they list 5 different dyes in the blue emission range (Syto 40-45). Syto 42 looks good to me on paper. What do you think. Thanks, John. --
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Tobias Baskin |
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John,
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\ Tobias I.
Baskin
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\ Biology
Department
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Alison J. North |
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http://listserv.acsu.buffalo.edu/cgi-bin/wa?S1=confocal Hi John and Tobias, This may be a completely unhelpful response because I was not working on plants and I was looking for dyes in the red/far red range, not blue. However, a few years ago I tested a whole range of the red Syto dyes to try to use them to follow cell division using live cell imaging (together with a GFP construct) and I found something very interesting with Syto 61. Although I had the same problem as Tobias when I imaged through Texas Red filter sets - i.e. the mitochondria obscured the nuclear signal - I found that if I acquired through the far red (Cy5) filters the signal was now predominantly nuclear. The longer I left it, the more the nuclear signal seemed to intensify while the remaining mitochondrial signal soon bleached away. I called Mol. Probes to ask them about this and they said that the dye becomes red-shifted when it's highly concentrated - which fits with the fact that the mitotic cells were brightest. Anyway, unlike most of the nuclear dyes it didn't affect cell division so I could image away for hours/days. One slight problem - the signal and localisation appeared to be highly cell specific. It was great in MDCK cells but I seem to remember I couldn't get the same effect in HeLas. Still - might be worth a shot if a far red dye would do? Best wishes, Alison Tobias Baskin wrote: > Search the CONFOCAL archive at > http://listserv.acsu.buffalo.edu/cgi-bin/wa?S1=confocal > John, > One or two years ago, we got a group of syto dyes for this very > purpose, imaging in arabidopsis roots. We were hoping to image DNA along > with a GFP reporter and therefore we tested sytos that have long > wavelength emission (we were working on confocal, without ability to do > uv excitation). None of them worked for us. They tended to be either > toxic or dim. The other thing we noticed was that because the cells are > crammed with mitochondria that move all over the place, it was difficult > to follow nuclear DNA against this hive of mitochondrial motion. But we > never tested blue ones. > > Good luck, > Tobias > >> Search the CONFOCAL archive at >> http://listserv.acsu.buffalo.edu/cgi-bin/wa?S1=confocal >> >> Do any of the plant biologists out there have experience using the >> Syto dyes from Molecular Probes to stain nuclei of living cells. In >> particular, they list 5 different dyes in the blue emission range >> (Syto 40-45). Syto 42 looks good to me on paper. What do you think. >> Thanks, John. >> -- >> Runions signature >> ********************************* >> C. John Runions, Ph.D. >> School of Life Sciences >> Oxford Brookes University >> Oxford, UK >> OX3 0BP >> >> email: [hidden email] <mailto:[hidden email]> >> phone: +44 (0) 1865 483 964 >> Runions' lab web site >> <http://www.brookes.ac.uk/lifesci/runions/HTMLpages/index.html%21> >> >> Visit The Illuminated Plant Cell >> <http://www.illuminatedcell.com/ER.html> dot com >> Oxford Brookes Master's in Bioimaging with Molecular Technology >> <http://www.brookes.ac.uk/studying/courses/postgraduate/2007/bmt> > > > -- > > _ ____ __ ____ > / \ / / \ / \ \ Tobias I. Baskin > / / / / \ \ \ Biology Department > /_ / __ /__ \ \ \__ 611 N. Pleasant St. > / / / \ \ \ University of Massachusetts > / / / \ \ \ Amherst, MA, 01003 > / / ___ / \ \__/ \ ____ > http://www.bio.umass.edu/biology/baskin/ > Voice: 413 - 545 - 1533 Fax:/ 413 - 545 - 3243/ -- Alison J. North, Ph.D., Research Assistant Professor and Director of the Bio-Imaging Resource Center, The Rockefeller University, 1230 York Avenue, New York, NY 10065. Tel: office ++ 212 327 7488 Tel: lab ++ 212 327 7486 Fax: ++ 212 327 7489 |
Christian-103 |
In reply to this post by Tobias Baskin
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I'll echo Tobias here. It's very tough to get any dye into living plant cells and keep them that way. We've tried nearly every nuclear stain available along with various other markers and trackers, such as mitotracker, all with no luck in the hands of the users.
Have you thought about making stables with RFP in the nuclei? Three channel sequencing then allows you to visualize GFP, RFP and cholorplasts in the far red channel. Christian |
Glen MacDonald-2 |
In reply to this post by Alison J. North
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http://listserv.acsu.buffalo.edu/cgi-bin/wa?S1=confocal I only used the red Sytos once on live brain slices. The red Syto dyes seem to be lipophilic and wander through the intracellular membrane compartments on their way to the nucleus. You have to wait for them to appear in the nuclei after staining. Glen On May 8, 2008, at 7:11 AM, Alison North wrote: > Search the CONFOCAL archive at > http://listserv.acsu.buffalo.edu/cgi-bin/wa?S1=confocal > > Hi John and Tobias, > > This may be a completely unhelpful response because I was not > working on plants and I was looking for dyes in the red/far red > range, not blue. However, a few years ago I tested a whole range of > the red Syto dyes to try to use them to follow cell division using > live cell imaging (together with a GFP construct) and I found > something very interesting with Syto 61. Although I had the same > problem as Tobias when I imaged through Texas Red filter sets - > i.e. the mitochondria obscured the nuclear signal - I found that if > I acquired through the far red (Cy5) filters the signal was now > predominantly nuclear. The longer I left it, the more the nuclear > signal seemed to intensify while the remaining mitochondrial signal > soon bleached away. I called Mol. Probes to ask them about this and > they said that the dye becomes red-shifted when it's highly > concentrated - which fits with the fact that the mitotic cells were > brightest. Anyway, unlike most of the nuclear dyes it didn't > affect cell division so I could image away for hours/days. > > One slight problem - the signal and localisation appeared to be > highly cell specific. It was great in MDCK cells but I seem to > remember I couldn't get the same effect in HeLas. Still - might be > worth a shot if a far red dye would do? > > Best wishes, > Alison > > > Tobias Baskin wrote: >> Search the CONFOCAL archive at http://listserv.acsu.buffalo.edu/ >> cgi-bin/wa?S1=confocal >> John, >> One or two years ago, we got a group of syto dyes for this >> very purpose, imaging in arabidopsis roots. We were hoping to >> image DNA along with a GFP reporter and therefore we tested sytos >> that have long wavelength emission (we were working on confocal, >> without ability to do uv excitation). None of them worked for us. >> They tended to be either toxic or dim. The other thing we noticed >> was that because the cells are crammed with mitochondria that move >> all over the place, it was difficult to follow nuclear DNA against >> this hive of mitochondrial motion. But we never tested blue ones. >> Good luck, >> Tobias >>> Search the CONFOCAL archive at http://listserv.acsu.buffalo.edu/ >>> cgi-bin/wa?S1=confocal >>> >>> Do any of the plant biologists out there have experience using >>> the Syto dyes from Molecular Probes to stain nuclei of living >>> cells. In particular, they list 5 different dyes in the blue >>> emission range (Syto 40-45). Syto 42 looks good to me on paper. >>> What do you think. Thanks, John. >>> -- >>> Runions signature >>> ********************************* >>> C. John Runions, Ph.D. >>> School of Life Sciences >>> Oxford Brookes University >>> Oxford, UK >>> OX3 0BP >>> >>> email: [hidden email] <mailto:[hidden email]> >>> phone: +44 (0) 1865 483 964 >>> Runions' lab web site <http://www.brookes.ac.uk/lifesci/runions/ >>> HTMLpages/index.html%21> >>> Visit The Illuminated Plant Cell <http://www.illuminatedcell.com/ >>> ER.html> dot com >>> Oxford Brookes Master's in Bioimaging with Molecular Technology >>> <http://www.brookes.ac.uk/studying/courses/postgraduate/2007/bmt> >> -- >> _ ____ __ ____ / \ / / >> \ / \ \ Tobias I. Baskin >> / / / / \ \ \ Biology Department >> /_ / __ /__ \ \ \__ 611 N. Pleasant St. >> / / / \ \ \ University of >> Massachusetts >> / / / \ \ \ Amherst, MA, >> 01003 >> / / ___ / \ \__/ \ ____ >> http://www.bio.umass.edu/biology/baskin/ >> Voice: 413 - 545 - 1533 Fax:/ 413 - 545 - 3243/ > > -- > Alison J. North, Ph.D., > Research Assistant Professor and > Director of the Bio-Imaging Resource Center, > The Rockefeller University, > 1230 York Avenue, > New York, > NY 10065. > Tel: office ++ 212 327 7488 > Tel: lab ++ 212 327 7486 > Fax: ++ 212 327 7489 |
Marc Green |
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I tried several concentrations and incubation times for the syto dyes in the red sampler kit on live yeast, But never got any specific nuclear staining. Sometimes the opposite. I was watching on both “Texas-Red” and “Cy5” channels. Please let me know if you get a working blue past the cell wall at a non-toxic concentration. Marc On 8/5/08 03:13, "John Runions" <[hidden email]> wrote: Search the CONFOCAL archive at http://listserv.acsu.buffalo.edu/cgi-bin/wa?S1=confocal ------------------ Marc D Green Pombe.net [hidden email] |
John Runions |
In reply to this post by Christian-103
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Thanks Christian, good suggestion about using FPs. We already have almost every organelle marked in almost every color and that clearly is the way to go. We were only interested in nuclear stains that emit in the blue as a 'quick and dirty' way of looking at nuclei in lines without nuclear marking by FPs. Best, John. Christian wrote: Search the CONFOCAL archive at http://listserv.acsu.buffalo.edu/cgi-bin/wa?S1=confocal I'll echo Tobias here. It's very tough to get any dye into living plant cells and keep them that way. We've tried nearly every nuclear stain available along with various other markers and trackers, such as mitotracker, all with no luck in the hands of the users. --
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Ignatius, Mike |
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For those interested I can send a recently organized
listing of dyes that have seen utility for plant cell work (respond
off-line). It is fairly long and includes an extensive
bibliography. We have never made it available before, but in the queue for
future publication.
For example for Nuclei:
· Commonly used stains for nucleic acids in plants are DAPI, Hoechst 33258, YOYO®-1 iodide, YO-PRO®-1 iodide , acridine orange, ethidium bromide, and propidium iodide. But as Christian points out, these may not work.
However a new reagent has emerged that might be of interest. It
isn't a simple stain, but it readily labels dividing
plant cell nuclei (alfalfa) in a workflow similar to BrDu but much improved
with our new Click-iT technology.
Full text available at: http://www.invitrogen.com/etc/medialib/en/filelibrary/pdf/bioprobes/bioprobes55.Par.79287.File.dat/bp55_1_EdU.pdf
From that
article: Figure 5—Cell wall digestion is not required with
Click-iT™ EdU. Medicago sativa
(alfalfa) suspension cultures were
incubated with 10 μM EdU for 3 hours. Cells were then fixed
and permeabilized. EdU that had been
incorporated into newly synthesized DNA was detected with the Click-iT™ EdU Alexa Fluor® 488 Imaging Kit (green fluorescence, Cat.
no. C10083). Nuclei were stained with
blue-fluorescent DAPI. Six confocal sections were overlaid
onto a differential interference contrast image.
Image contributed by Ferhan Ayaydin, Cellular Imaging Laboratory,
Biological Research Center, Szeged, Hungary.
Kind Regards, Mike Ignatius, Molecular Probes/Invitrogen Eugene, Oregon, Site of the 2008 US Track and Field Trials. Search the CONFOCAL archive at http://listserv.acsu.buffalo.edu/cgi-bin/wa?S1=confocal I'll echo Tobias here. It's very tough to get any dye into living
plant cells and keep them that way. We've tried nearly every nuclear stain
available along with various other markers and trackers, such as mitotracker,
all with no luck in the hands of the users.
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Illuminated Plant Cell dot com From: Confocal Microscopy List [mailto:[hidden email]] On Behalf Of John Runions Sent: Thursday, May 08, 2008 9:25 AM To: [hidden email] Subject: Re: Syto dyes for plant nuclei in living cells Thanks Christian, good suggestion about using FPs. We already have almost every organelle marked in almost every color and that clearly is the way to go. We were only interested in nuclear stains that emit in the blue as a 'quick and dirty' way of looking at nuclei in lines without nuclear marking by FPs. Best, John. Christian wrote: Search the CONFOCAL archive at http://listserv.acsu.buffalo.edu/cgi-bin/wa?S1=confocal I'll echo Tobias here. It's very tough to get any dye into living plant cells and keep them that way. We've tried nearly every nuclear stain available along with various other markers and trackers, such as mitotracker, all with no luck in the hands of the users. --
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Christian-103 |
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Quick and dirty... hmm, might I suggest animal cells then?
Yes, I'm joking. I've done primarily plant confocal since 2001, and I don't know anything quick and dirty yet, but I'm always hopeful. Maybe a few of the other responses here will show some promise. I will say what works in one species may not in another, no matter how much time you throw at it. If you have success, please share it here. Christian John Runions <[hidden email]> wrote: Search the CONFOCAL archive at http://listserv.acsu.buffalo.edu/cgi-bin/wa?S1=confocal |
Rosemary.White |
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I tried a whole range of them at one stage, but in my hands, they all labelled quite a bit more than the nucleus, some just went in and lit up the whole cytoplasm. Didn’t pursue it further than that, it may be that with different buffers, etc. they would be less likely to rush into the cell. cheers, Rosemary Rosemary White [hidden email] CSIRO Plant Industry ph. 61 (0)2-6246 5475 GPO Box 1600 fax. 61 (0)2-6246 5334 Canberra, ACT 2601 Australia On 8/5/08 8:13 PM, "John Runions" <[hidden email]> wrote: Search the CONFOCAL archive at http://listserv.acsu.buffalo.edu/cgi-bin/wa?S1=confocal |
Rosemary.White |
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cheers, Rosemary On 8/5/08 11:03 PM, "Tobias Baskin" <[hidden email]> wrote: Search the CONFOCAL archive at http://listserv.acsu.buffalo.edu/cgi-bin/wa?S1=confocal |
Christian-103 |
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I'd like to point out that three researchers on three continents have now stated the difficulty getting only the nuclei labeled. I know we had some input from a commercial source, but the literature is lacking.
Nearly every day I'm asked "What's that spotting in the cytoplasm?" And I answer "I don't know without a counter stain." The point I'm trying to make is that plant confocal is challenging, and none of us are likely to get bored any time soon. Now if we could just have 1/10th the dyes the animal systems people do. I'd also like to make a public plea for any protocols which may lead to nuclei only labeling in living plants. Christian |
Rosemary.White |
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Yes, those common stains do work - sometimes. I used to think DAPI was good for all living plant cells, but have met many plant tissues, cell cultures and protoplasts that won’t take it up. Ditto for all the rest (including DRAQ5). My feeling is that these dyes can enter certain types of plant plasma membranes but not others. My guess is that the charge on these dyes keeps them out, and maybe if they were modified to appear less polar to the membrane, they’d get in more readily. And we use propidium iodide in our live/dead cell test – it is either excluded from or takes a long time to get into living plant cells. The plant cells it gets into quickly are dying or undergoing programmed cell death – e.g. sloughing root cap cells. regards, Rosemary Rosemary White [hidden email] CSIRO Plant Industry ph. 61 (0)2-6246 5475 GPO Box 1600 fax. 61 (0)2-6246 5334 Canberra, ACT 2601 Australia On 9/5/08 3:33 AM, "Ignatius, Mike" <[hidden email]> wrote: Search the CONFOCAL archive at http://listserv.acsu.buffalo.edu/cgi-bin/wa?S1=confocal |
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