Dear Dr. Bernd Zorr, Thank you for your valuable suggestion but Life technology does not have dynabeads for gamma delta T cells and more specifically not for IL17 producing gamma delta T cells.

Thanking you

Rushikesh

Please check these links for Cytokine Capture for enrichment of IL-17 producing cells

https://www.miltenyibiotec.com/~/media/Files/Publications/MACSandmore/MACS_more_12_1_2010.ashx

http://www.uwencode.org/proj/Science_Maurano_Humbert_et_al/data/TR_CD4_Tcell_isolation.pdf

Dear Rushikesh, I have tried to do the same experiment recently. You can perform the isolation of total TCRgd cells with the antibody that Bernd mentioned before conjugated to PE (for example) and then pull out labeled cells with Miltenyi anti-PE beads, that is how we do it. The problem is that TCRgd cells in peripheral blood are very inferquent, in the best cases they account for a 5% of total cells, so the amount of antibody and PE-beads you have to use is huge. Besides, I have checked IL-17 production in total PBLs and although I could perfectly see Il17 production by TCRab, I was not able to see IL-17 production in gated TCRgd cells. So I whatwe thought is that humal IL-17 secreting cells stay (or they are polarized in tissues) but they do not circulate. Of course to see IL-17 production you have to pre-stimulate the cells with plate-bound anti CD3 or TCRgd and the re-stimulate prior staining with PMA/iono + BFA, otherwise is imposible to see cytokine expression, so I do not think you can check directly on ex-vivo TCRgd cells cytokine expression with regular isolation/staining protocols. Probably the miltenyi IL-17 secretion assay that Korcan shows worth a try...

Hope it helps.