Re: CTLA4

From: Rohan and Shanthi Ameratunga (immunology@xtra.co.nz)
Date: Thu Apr 01 1999 - 17:39:01 EST


Antony,

No problem,  I'll post the replies next week.

Thank  to all who responded

Rohan Ameratunga
Auckland Hospital
New Zealand

Antony Bakke wrote:

> I would also be interested in any responses to this question, so please post to the list.
>
> Thank you,
>
> Antony Bakke, PhD
> Oregon Health Sci Univ
> Dept of Pathology
> bakkea@ohsu.edu
>
> >>> Rohan and Shanthi Ameratunga <immunology@xtra.co.nz> 03/30 8:20 PM >>>
>
> Dear Colleagues,
>
> I would be grateful for advice on CTLA4 staining.  We are attempting to
> stain cell surface CTLA4 as marker of solid organ rejection in
> peripheral blood lymphocytes.  None of liver or kidney transplant
> samples have been positive using the Coulter immunotech antibody.  We
> are not sure if this is a technical problem or whether the antigen is
> not expressed in the periphery.
>
> 1.  What in vitro stimulation methods should be used for positive
> controls?  How long should cells be stimulated before we detect CTLA4?
>
> 2.   How useful is intracellular staining for this antigen?
>
> Thank you in advance
>
> Best regards
>
> Rohan Ameratunga
> Auckland Hospital
> NEW ZEALAND



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