[Cytometry] R: Longevity of T cell activation markers HLA-DR and Ki-67

fnicoli at libero.it fnicoli at libero.it
Wed Feb 12 03:51:15 EST 2014

Dear Calman,
in  my experience resting PBMC cultured for 8 days display a percentage of HLA-
DR+ of about 10%

>----Messaggio originale----
>Da: CPRUSSIN at niaid.nih.gov
>Data: 11/02/2014 16.41
>A: "Cytometry"<cytometry at lists.purdue.edu>
>Ogg: [Cytometry] Longevity of T cell activation markers HLA-DR and Ki-67
>We have identified a subpopulation of CD4 T cells in our eosinophilic GI 
disease patients that appear to be activated in vivo, in that they express 
increased HLA-DR, and Ki-67.  We'd like to culture the PBMC under "resting" 
conditions (no added cytokines) to see if these activation markers are down 
regulated. We can keep PBMC alive in vitro for 7 days under these conditions.
>Question: Does anyone know how long HLA-DR and Ki-67 stay up once the 
activation stimulus is removed?
>Calman Prussin, M.D.
>Laboratory of Allergic Diseases
>National Institute of Allergy and Infectious Diseases/ NIH
>calman at nih.gov
>Cytometry mailing list
>Cytometry at lists.purdue.edu
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