[HTML][HTML] The α (1, 3) fucosyltransferases FucT-IV and FucT-VII exert collaborative control over selectin-dependent leukocyte recruitment and lymphocyte homing

JW Homeister, AD Thall, B Petryniak, P Malý… - Immunity, 2001 - cell.com
JW Homeister, AD Thall, B Petryniak, P Malý, CE Rogers, PL Smith, RJ Kelly, KM Gersten…
Immunity, 2001cell.com
Abstract E-, P-, and L-selectin counterreceptor activities, leukocyte trafficking, and
lymphocyte homing are controlled prominently but incompletely by α (1, 3)
fucosyltransferase FucT-VII-dependent fucosylation. Molecular determinants for FucT-VII-
independent leukocyte trafficking are not defined, and evidence for contributions by or
requirements for other FucTs in leukocyte recruitment is contradictory and incomplete. We
show here that inflammation-dependent leukocyte recruitment retained in FucT-VII …
Abstract
E-, P-, and L-selectin counterreceptor activities, leukocyte trafficking, and lymphocyte homing are controlled prominently but incompletely by α(1,3)fucosyltransferase FucT-VII-dependent fucosylation. Molecular determinants for FucT-VII-independent leukocyte trafficking are not defined, and evidence for contributions by or requirements for other FucTs in leukocyte recruitment is contradictory and incomplete. We show here that inflammation-dependent leukocyte recruitment retained in FucT-VII deficiency is extinguished in FucT-IV−/−/FucT-VII−/− mice. Double deficiency yields an extreme leukocytosis characterized by decreased neutrophil turnover and increased neutrophil production. FucT-IV also contributes to HEV-born L-selectin ligands, since lymphocyte homing retained in FucT-VII−/− mice is revoked in FucT-IV−/−/FucT-VII−/− mice. These observations reveal essential FucT-IV-dependent contributions to E-, P-, and L-selectin ligand synthesis and to the control of leukocyte recruitment and lymphocyte homing.
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