University of Cambridge > Talks.cam > Immunology in Pathology > Phylogenetic origin of the vertebrate leukocyte receptors

Phylogenetic origin of the vertebrate leukocyte receptors

Add to your list(s) Download to your calendar using vCal

If you have a question about this talk, please contact Sue Griffin.

Host: Jim Kaufman (jfk31@cam.ac.uk)

Adaptive immunity of vertebrates is centered on leukocytes, lymphocytes and other cells of the hematopoietic system like the antigen presenting cells.

By scrutinizing the data bases of various invertebrates, from Cnidarians to Tunicates, genes related to the receptors that build the different leukocyte lineages of vertebrates have been found (only lectins and immunoglobulin superfamily members have been investigated), sometimes with high homology and often on conserved linkage groups. One of these linkage groups is that of the leukocyte receptor complex and neighbouring region of the human chromosome 19q and 3 proposed paralogs.

Following the hypothesis of 2 genome duplications occurring during the evolution of chordates one could imagine that preduplication ancestors should have only one such region. Indeed it seems to be the case in the tunicate Ciona. So, perhaps, the basic leukocyte population context of the future vertebrates was common to the ancestor of both jawless and jawed vertebrates, that ultimately diverged by the choice of different protein families for generating somatically their specific antigen receptors.

This talk is part of the Immunology in Pathology series.

Tell a friend about this talk:

This talk is included in these lists:

Note that ex-directory lists are not shown.

 

© 2006-2019 Talks.cam, University of Cambridge. Contact Us | Help and Documentation | Privacy and Publicity