NKRP1A molecule is involved in transendothelial migration of CD4+ human T lymphocytes

Alessandro Poggi, Paola Costa, Maria Raffaella Zocchi, Lorenzo Moretta

Research output: Contribution to journalArticlepeer-review


Among human CD4+ T lymphocytes, 5-20% express the C-type lectin molecule NKRP1A. Interestingly, CD4+ NKRP1A+ T lymphocytes express high levels of β1 and β2 integrins, thus representing a T lymphocyte subset that can possibly adhere and migrate through vascular endothelium. Indeed, resting CD4+ NKRP1A+ lymphocytes, differently from the CD4+ NKRP1A- subset, migrated across endothelial cell monolayers in a Transwell chamber system. This transendothelial migration was strongly reduced after pre-treatment with an anti-NKRP1A monoclonal antibody (mAb). In addition, the NKRP1A negative Jurkatt CD4+ T-cell line that had been stably transfected with NKRP1A cDNA, migrated more rapidly and efficiently than untransfected Jurkatt cells. Finally, mAb-mediated cross-linking of NKRP1A molecule in CD4+ T lymphocytes induced the upregulation of the LFA1 Mg2+ binding site as well as β1 and β2 integrin chains. Altogether, these findings indicate that NKRP1A molecule is involved in transendothelial migration of resting CD4+ T lymphocytes.

Original languageEnglish
Pages (from-to)121-123
Number of pages3
JournalImmunology Letters
Issue number1-3
Publication statusPublished - 1997


  • Integrins
  • Lectins
  • Lymphocyte migration
  • NKRP1A

ASJC Scopus subject areas

  • Immunology
  • Immunology and Allergy


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