Abstract:
:Protein kinase C-associated kinase (PKK; DIK/RIP4) is an ankyrin-repeat containing serine/threonine receptor-interacting protein (RIP)-family kinase that can activate NFkappaB, and is required for keratinocyte development. In earlier studies, the expression of a catalytically inactive mutant of PKK in the B cell lineage resulted in a marked decrease in peripheral B cells in the spleen and a severe reduction of B-1 B cells. Here we explore the consequences of a null mutation in PKK with respect to the generation of peripheral B cell lineages and the activation of NFkappaB. We show that PKK is not required for the production of B cells in the bone marrow or for the development and maintenance of all mature B lymphocyte populations. We also show that PKK is not required for the activation of NFkappaB downstream of the BCR, CD40, or TLR-4 in B cells. Taken together, these data demonstrate that the loss of this RIP-family kinase does not compromise B lymphocyte development and maintenance, but leaves open the possibility that PKK may have a redundant role in these processes.
journal_name
Mol Immunoljournal_title
Molecular immunologyauthors
Moran ST,Cariappa A,Liu H,Boboila C,Shi HN,Holland PM,Peschon JJ,Pillai Sdoi
10.1016/j.molimm.2005.09.009subject
Has Abstractpub_date
2006-04-01 00:00:00pages
1694-9issue
10eissn
0161-5890issn
1872-9142pii
S0161-5890(05)00341-Xjournal_volume
43pub_type
杂志文章abstract::A turbidimetric method for measuring the diameters of insoluble immune complexes, based on the wavelength dependence of their ability to scatter light, was developed. The method was validated by demonstrating that it gave experimental values for the diameters of polystyrene microspheres which were in good agreement wi...
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pub_type: 杂志文章
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