RhoH is required to maintain the integrin LFA-1 in a nonadhesive state on lymphocytes - PubMed (original) (raw)
doi: 10.1038/ni1103. Epub 2004 Aug 8.
Affiliations
- PMID: 15300248
- DOI: 10.1038/ni1103
RhoH is required to maintain the integrin LFA-1 in a nonadhesive state on lymphocytes
Lisa K Cherry et al. Nat Immunol. 2004 Sep.
Abstract
Lymphocyte function-associated antigen 1 (LFA-1) is relatively nonadhesive on resting lymphocytes; however, the mechanisms underlying changes in its adhesiveness are poorly understood. In this study, we generated a Jurkat T cell clone, J+hi1.14, that contained low amounts of mRNA for RhoH, a leukocyte-specific inhibitory Rho family member. J+hi1.14 cells expressed constitutively adhesive LFA-1 and the cells bound spontaneously to intracellular adhesion molecules 1, 2 and 3. Reconstitution of RhoH mRNA expression in J+hi1.14 cells reverted the adhesion phenotype to that of wild-type. We obtained similar results using RNA interference in peripheral blood lymphocytes. These data demonstrate that RhoH is required for maintenance of lymphocyte LFA-1 in a nonadhesive state.
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