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Download File - JOHN J. HADDAD, Ph.D.

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Dendritic Cell Vaccines for Gliomas 89<br />

Figure 1 (See color insert.) Immunohistochemical characterization of infiltrating<br />

cells in intracranial tumor before and after DC vaccination: Intratumoral CD8 þ cells,<br />

pre- (A), and post-vaccination (B). Intratumoral CD4 þ cells, pre- (C), and post-vaccination<br />

(D). Intratumoral CD45RO þ cells, pre- (E), and post-vaccination (F). Intratumoral<br />

CD8 þ cells pre- (G) and post-recurrence (H) in a non-vaccinated patient.<br />

(2 patients) malignant glioma, including anaplastic astrocytoma and GBM, were<br />

given three vaccinations with autologous DC pulsed with autologous tumor<br />

lysate every other week over a six-week period. In four out of nine patients, as<br />

part of an HLA-restricted tetramer staining assay, it was found that there were<br />

one or more tumor-associated antigen (TAA)-specific CTL clones against melanoma<br />

antigen-encoding gene-1, gp100, and human epidermal growth factor<br />

receptor (HER)-2 (Fig. 2). DC vaccination offered a significant survival benefit

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