Moreto Elias, Jemina |
Dear all, I have two technical questions and I was wondering if
you could have the solution. 1- Do
you know a way to avoid the presence of red blood corpuscle in tissues before performing
immunofluorescence staining? Or otherwise, is there any way to avoid their autofluorescence? 2- We
are trying to stain the nucleus of endothelial retina vessels. We have tried TX100
permeabilization, as well as HCl with DMSO without success… DAPI is staining
all kind of nucleus in this tissue but not endothelial cell ones. Thank you in advance Jemina Moretó Elias,
PhD. Confocal Microscopy Cancer Epigenetics and
Biology Program (PEBC) IDIBELL, Catalan
Institute of Oncology (ICO) Avinguda Gran Via de
l'Hospitalet, 199-203 Tel. +34 932607500 ext
3176 |
Jurkevic, Aleksandr |
Jemina, Regarding your first question, you need to perfuse a whole animal
or organ, if possible, with 0.1M phosphate buffer (PB). Addition of some
heparin and 0.1% sodium nitrite will help to remove all erythrocytes even from
smallest blood vessels. Alexander Jurkevic From: Confocal Microscopy
List [mailto:[hidden email]] On Behalf Of Moreto
Elias, Jemina Dear
all, I
have two technical questions and I was wondering if you could have the
solution. 1-
Do
you know a way to avoid the presence of red blood corpuscle in tissues before
performing immunofluorescence staining? Or otherwise, is there any way to avoid
their autofluorescence? 2-
We
are trying to stain the nucleus of endothelial retina vessels. We have tried
TX100 permeabilization, as well as HCl with DMSO without success… DAPI is
staining all kind of nucleus in this tissue but not endothelial cell ones. Thank
you in advance Jemina Moretó Elias, PhD. Confocal Microscopy Cancer Epigenetics and Biology Program (PEBC) IDIBELL, Catalan Institute of Oncology (ICO) Avinguda Gran Via de l'Hospitalet, 199-203 08907, L'Hospitalet de Llobregat (Barcelona) Tel. +34 932607500 ext 3176 |
Leigh Silvester |
In reply to this post by Moreto Elias, Jemina
You could try using a red blood cell lysis buffer.
Protocol provided by most manufacturers is for whole blood, although this can be adapted for tissue. Would need to wash tissue thoroughly afterwards to prevent deterioration of tissue and wash away any haemoglobin. A typical blood protocol would be Dilute one volume of cell suspension with 5-10 volumes of lysis buffer (155 mM NH4Cl; 10 mM KHCO3 and 0.1 mM EDTA) and incubate for 5 minutes at room temperature This has been done on small tissue chunks satisfactorily. Regards Leigh Silvester From: Confocal Microscopy List [mailto:[hidden email]] On Behalf Of Moreto Elias, Jemina Sent: 16 June 2010 12:38 To: [hidden email] Subject: red corpuscles autofluorescence and nuclear endothelial cells staining Dear all, I have two technical questions and I was wondering if you could have the solution. 1- Do you know a way to avoid the presence of red blood corpuscle in tissues before performing immunofluorescence staining? Or otherwise, is there any way to avoid their autofluorescence? 2- We are trying to stain the nucleus of endothelial retina vessels. We have tried TX100 permeabilization, as well as HCl with DMSO without success... DAPI is staining all kind of nucleus in this tissue but not endothelial cell ones. Thank you in advance Jemina Moretó Elias, PhD. Confocal Microscopy Cancer Epigenetics and Biology Program (PEBC) IDIBELL, Catalan Institute of Oncology (ICO) Avinguda Gran Via de l'Hospitalet, 199-203 08907, L'Hospitalet de Llobregat (Barcelona) Tel. +34 932607500 ext 3176 [hidden email] www.pebc.cat This message has been checked for viruses but the contents of an attachment may still contain software viruses which could damage your computer system: you are advised to perform your own checks. Email communications with the University of Nottingham may be monitored as permitted by UK legislation. |
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