Lamprey Variable Lymphocyte Receptors Mediate Complement-Dependent Cytotoxicity
نویسندگان
چکیده
منابع مشابه
Cytotoxicity Mediate Complement-Dependent Lamprey Variable Lymphocyte Receptors
An alternative adaptive-immune system is present in the most basal vertebrates—lampreys and hagfish—the only surviving jawless vertebrates. These eel-like fish use leucine-rich repeat–based receptors for Ag recognition instead of the Ig-based receptors used in jawed vertebrates. We report that in Japanese lamprey (Lampetra japonica), variable lymphocyte receptor (VLR)B interacts with C1q and C3...
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متن کاملLamprey TLRs with properties distinct from those of the variable lymphocyte receptors.
Fish express mammalian-type (M-type) TLRs consisting of leucine-rich repeats (LRRs) and Toll-IL-1R (TIR) homology domain for immunity, whereas invertebrates in deuterostomes appear to have no orthologs of M-type TLRs. Lampetra japonica (lamprey) belongs to the lowest class of vertebrates with little information about its TLRs. We have identified two cDNA sequences of putative TLRs in the lampre...
متن کاملVariable lymphocyte receptors in hagfish.
A previously uncharacterized type of variable lymphocyte receptors (VLR) was identified recently in the Sea lamprey. This jawless vertebrate generates an extensive VLR repertoire through differential insertion of neighboring diverse leucine-rich repeat (LRR) cassettes into an incomplete germ-line VLR gene. We report here VLR homologs from two additional lamprey species and the presence of two t...
متن کاملIdentification of a third variable lymphocyte receptor in the lamprey.
Jawless vertebrates such as lamprey and hagfish lack T-cell and B-cell receptors; instead, they have unique antigen receptors known as variable lymphocyte receptors (VLRs). VLRs generate diversity by recombining highly diverse leucine-rich repeat modules and are expressed clonally on lymphocyte-like cells (LLCs). Thus far, two types of receptors, VLRA and VLRB, have been identified in lampreys ...
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ژورنال
عنوان ژورنال: The Journal of Immunology
سال: 2013
ISSN: 0022-1767,1550-6606
DOI: 10.4049/jimmunol.1200876