International Immunology, Vol 9, 1043-1051, Copyright © 1997 by Oxford University Press
E Knudsen, T Seierstad, JT Vaage, C Naper, HB Benestad, B Rolstad and AA Maghazachi
We have successfully cloned nine NKR-P1+ TCR alpha beta + cells from PVG
rat spleens, utilizing murine macrophage inflammatory protein-1 alpha
(MIP-1 alpha) and IL-2. These clones are either double negative (DN,
CD4-CD8-), which included clones 3.31, 3.71, 4.19, 4.59 and 4.65, or single
positive (SP, CD4+CD8-), which included clones 1.64, 3.8, 3.76 and 3.78. No
CD8+ clone was recovered. All nine clones are restricted in terms of their
expression of the V beta antigens, since they express V beta 8.2 but not V
beta 8.5, V beta 10 or V beta 16. These clones are agranular and they fall
to generate NK or LAK activity upon incubation with IL-2, IL-12 or their
combination. On the basis of their production of intracellular cytokines
they can be divided into three categories: (I) SP clones (1.64, 3.8, 3.76
and 3.78) do not produce IL-2 or IL-4, but produce IFN-gamma and IL-12, and
they vary in their production of IL-1, RANTES or tumor necrosis factor
(TNF)-alpha; (II) DN clones 4.59 and 4.65 produce IL-1 alpha and IFN-gamma
only, and fall to produce other cytokines; and (III) DN clones 3.31, 3.71
and 4.19 produce IL-1 alpha, IL-1 beta, IL-2, IL-12, IFN-gamma, RANTES and
TNF-alpha. From all the clones examined only DN clones 3.31 and to a lesser
degree 4.19 produce IL-4. In vivo tissue localization of clones 3.8, 3.31
and 4.59 shows that these cells distribute into the liver and bone marrow
24 h post i.v. administration. Their accumulation in the liver and bone
marrow along with their ability to secrete various cytokines suggest that
these cells may influence the generation, differentiation or apoptosis of
immune or hematopoietic cells.
ARTICLES
Cloning, functional activities and in vivo tissue distribution of rat NKR-P1+ TCR alpha beta + cells
Department of Physiology, Institute of Basic Medical Sciences, University of Oslo, Norway.
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