The magnitude and efficacy of CD8+ T cell memory may notably regress, especially if immune induction occurs in the absence of adequate CD4+ help. This report demonstrates that this CD8+ memory malfunction could be remedied if a source of cognate antigen-recognizing helper cells were provided during recall. The inability of adoptive transfer of memory SIINFEKL-specific CD8 cells to reject tumors was overcome if recipients were primed for ovalbumin-specific helper cell responses. Additionally, animals primed for a SIINFEKL-specific memory response and incapable of rejecting the tumor could regain protective immunity if given helper cells. This pattern of CD8+ T cell functional rescue or reprogramming by helper cell transfer was replicated using a Herpes simplex virus antiviral immunity system. Our results could mean that therapeutic vaccine approaches could be designed to compensate situations that have defective CD8+ T cell function.
Identifer | oai:union.ndltd.org:ETSU/oai:dc.etsu.edu:etsu-works-19617 |
Date | 01 October 2005 |
Creators | Kumaraguru, Udayasankar, Banerjee, Kaustuv, Rouse, Barry T. |
Publisher | Digital Commons @ East Tennessee State University |
Source Sets | East Tennessee State University |
Detected Language | English |
Type | text |
Source | ETSU Faculty Works |
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