Re: CD57

From: Dr. Martin R. Hadam (Hadam.Martin@mh-hannover.de)
Date: Wed Mar 07 2001 - 07:06:28 EST


On Tue, 06 Mar 2001 14:59:39 -0500, Richard K. Meister wrote:

>We're doing some research in a cat model system and I have heard that the
>HNK-1 clone (anti-human CD57) cross-reacts with cat CD57.  According to
>Linscott's, there is an HNK-1 clone available from BD and Caltag - but
>their on-line catalogs don't list it.  I'm beginning to suspect that HNK-1
>may not actually be a clone, but rather a "pre-CD57" terminology.  Do any
>of you know of a clone named HNK-1 and where it can be purchased?

 HNK-1 is the clone's name which has been assigned to CD57 by the 4th
WS; the "brand name" given by BD is Leu-7 (and I'd be surprised if it
wasn't in their catalogue any more).

>There are several other anti-human CD57 clones that are available.  Is it
>reasonable to expect that if one CD57 clone cross-reacts with cat CD57 that
>all CD57 clones would cross-react, or would each clone need to be tested?
>(I'm guessing that each would need to be tested.)

 yes, even if cumbersome - it needs to be verified in each case.

 you can find all CD57 that were ever assigned during a Workshop at:
http://www.mh-hannover.de/aktuelles/projekte/hlda7/hldabase/CD57.htm

 there have been two more anti-human clones reported to crossreact with
cat CD57: TB01 & NK-1
 you may find the reference and the complete x-reactivity table at
http://www.mh-hannover.de/aktuelles/projekte/hlda7/animals/
 The table also incorporates updated information taken from
Pharmingen's poster at HLDA7.

>Also, all of the CD57 clones that I've found are IgM!  And few are availble
>in any form other than purified or FITC-conjugate.  Is there an reason why
>they would all be IgM isotype?

 it's a carbohydrate epitope

 HTH

 Martin Hadam


 Martin R. Hadam
 Kinderklinik - Medizinische Hochschule
 D-30623 Hannover
 Germany
 Email: Hadam.Martin@MH-Hannover.de



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