Dendritic cells-based T-cell immune response for the variable region of immunoglobulin light chain of myeloma and lymphoma cell lines
Ramadan, Gamal;
Abstract
The present work supported and extended a previous study (used VLIg gene segment type VkappaIV) and indicated that a considerable (P < 0.001) and specific autologous T-cell proliferation, proliferative index (PI) ranged from 386.0 to 399.5 at 20% dendritic cells (DCs):T-cells ratio, restricted mainly ( > 80%) to the major histocompatibility complex (MHC) class-I molecules can be elicited in vitro against other different VLg gene segments (VkappaI, VkappaIII and Vlambda2) of myeloma and lymphoma cell lines through a retroviral transduction of human DCs generated from CD34+ progenitor cells by phorbol ester (PMA) and under serum-free conditions. This study also showed a lesser proliferation, but significant (P < 0.05), restricted to MHC class-II molecules and specific for VLIg gene segments. The obtained proliferation was almost completely blocked (approximately 95%, P < 0.001) by anti-CD86 monoclonal antibodies, which confirmed the critical role of the CD86 costimulatory molecules in the activation of naive T-cells. The resulting immune responses did not significantly differ (P > 0.05) among the different types of VLIg gene segments, as VLIg-transduced DCs equally coexpressed the VLIg genes and CD86 costimulatory molecules. In conclusion, the present study could provide the basis of a VLIg-based immunotherapy in plasma cell and B-cell malignancies.
Other data
Title | Dendritic cells-based T-cell immune response for the variable region of immunoglobulin light chain of myeloma and lymphoma cell lines | Authors | Ramadan, Gamal | Issue Date | 1-Dec-2009 | Journal | The Egyptian journal of immunology / Egyptian Association of Immunologists | DOI | 2 http://api.elsevier.com/content/abstract/scopus_id/84856015430 95 16 |
PubMed ID | 16 | Scopus ID | 2-s2.0-84856015430 |
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