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      1. Author :
        Albanesi, M.; Mancardi, D. A.; Macdonald, L. E.; Iannascoli, B.; Zitvogel, L.; Murphy, A. J.; Leusen, J. H.; Bruhns, P.
      2. Title :
      3. Type :
        Journal Article
      4. Year :
      5. Publication :
        J Immunol
      6. Products :
      7. Volume :
      8. Issue :
      9. Page Numbers :
      10. Research Area :
      11. Keywords :
        B16-F10-luc2, B16F10-luc2, IVIS
      12. Abstract :
        mAb therapy for experimental metastatic melanoma relies on activating receptors for the Fc portion of IgG (FcgammaR). Opposing results on the respective contribution of mouse FcgammaRI, FcgammaRIII, and FcgammaRIV have been reported using the gp75-expressing B16 melanoma and the protective anti-gp75 mAb TA99. We analyzed the contribution of FcgammaRs to this therapy model using bioluminescent measurement of lung metastases loads, novel mouse strains, and anti-FcgammaR blocking mAbs. We found that the TA99 mAb-mediated effects in a combination therapy using cyclophosphamide relied on activating FcgammaRs. The combination therapy, however, was not more efficient than mAb therapy alone. We demonstrate that FcgammaRI and, unexpectedly, FcgammaRIII contributed to TA99 mAb therapeutic effects, whereas FcgammaRIV did not. Therefore, FcgammaRIII and FcgammaRI are, together, responsible for anti-gp75 mAb therapy of B16 lung metastases. Our finding that mouse FcgammaRIII contributes to Ab-induced tumor reduction correlates with clinical data on its human functional equivalent human FcgammaRIIIA (CD16A).
      13. URL :
      14. Call Number :
        PKI @ kd.modi @ 8
      15. Serial :
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