Semaphorin 3F and neuropilin-2 control the migration of human T-cell precursors - Research - Institut Pasteur

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Specific aspects of consanguinity: some examples from the Tunisian population

Effectiveness of bacteriophages in the sputum of cystic fibrosis patients

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Published in PloS one - 28 Jul 2014

Mendes-da-Cruz DA, Brignier AC, Asnafi V, Baleydier F, Messias CV, Lepelletier Y, Bedjaoui N, Renand A, Smaniotto S, Canioni D, Milpied P, Balabanian K, Bousso P, Leprêtre S, Bertrand Y, Dombret H, Ifrah N, Dardenne M, Macintyre E, Savino W, Hermine O

Link to Pubmed [PMID] – 25068647

PLoS ONE 2014;9(7):e103405

Neuropilins and semaphorins are known as modulators of axon guidance, angiogenesis, and organogenesis in the developing nervous system, but have been recently evidenced as also playing a role in the immune system. Here we describe the expression and role of semaphorin 3F (SEMA3F) and its receptor neuropilin-2 (NRP2) in human T cell precursors. NRP2 and SEMA3F are expressed in the human thymus, in both lymphoid and non-lymphoid compartments. SEMA3F have a repulsive effect on thymocyte migration and inhibited CXCL12- and sphingosine-1-phosphate (S1P)-induced thymocyte migration by inhibiting cytoskeleton reorganization prior to stimuli. Moreover, NRP2 and SEMA3F are expressed in human T-cell acute lymphoblastic leukemia/lymphoma primary cells. In these tumor cells, SEMA3F also blocks their migration induced by CXCL12 and S1P. Our data show that SEMA3F and NRP2 are further regulators of human thymocyte migration in physiological and pathological conditions.

Published on: 28 Jul 2014