Three clinical-stage tumor targeting antibodies reveal differential expression of oncofetal fibronectin and tenascin-C isoforms in human lymphoma

Leuk Res. 2009 Dec;33(12):1718-22. doi: 10.1016/j.leukres.2009.06.025. Epub 2009 Jul 22.


The antibody-based targeted delivery of bioactive molecules to tumor vasculature is an attractive avenue to concentrate therapeutic agents at cancer sites, while sparing normal organs. L19, F8 and F16 are clinical-stage human monoclonal antibodies, which selectively recognize splice isoforms of fibronectin and tenascin-C in the modified extracellular matrix of neoplastic lesions. Here, we report the first comparative immunohistochemical analysis of L19, F8 and F16 in human Hodgkin and non-Hodgkin lymphomas. F16 was found to strongly stain the majority of lymphomas but also specimens of nonspecific lymphadenitis. By contrast, L19 exhibited a better discrimination between tumoral and inflammatory processes, yet at the expense of a weaker staining of the majority of lymphoma specimens investigated. The staining patterns observed for F8 were intermediate between the ones observed for L19 and F16. This study provides a rationale basis for the clinical investigation of therapeutic derivatives of the three antibodies in lymphoma patients.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Antibodies, Monoclonal / immunology*
  • Fibronectins / immunology
  • Fibronectins / metabolism*
  • Humans
  • Immunohistochemistry
  • Lymphoma / metabolism*
  • Protein Isoforms / immunology
  • Protein Isoforms / metabolism*
  • Tenascin / immunology
  • Tenascin / metabolism*


  • Antibodies, Monoclonal
  • Fibronectins
  • Protein Isoforms
  • Tenascin
  • oncofetal fibronectin