Abstract:
BACKGROUND:GLV-1h68 is an attenuated recombinant vaccinia virus (VACV) that selectively colonizes established human xenografts inducing their complete regression. RESULTS:Here, we explored xenograft/VACV/host interactions in vivo adopting organism-specific expression arrays and tumor cell/VACV in vitro comparing VACV replication patterns. There were no clear-cut differences in vitro among responding and non-responding tumors, however, tumor rejection was associated in vivo with activation of interferon-stimulated genes (ISGs) and innate immune host's effector functions (IEFs) correlating with VACV colonization of the xenografts. These signatures precisely reproduce those observed in humans during immune-mediated tissue-specific destruction (TSD) that causes tumor or allograft rejection, autoimmunity or clearance of pathogens. We recently defined these common pathways in the "immunologic constant of rejection" hypothesis (ICR). CONCLUSION:This study provides the first prospective validation of a universal mechanism associated with TSD. Thus, xenograft infection by oncolytic VACV, beyond offering a promising therapy of established cancers, may represent a reliable pre-clinical model to test therapeutic strategies aimed at modulating the central pathways leading to TSD; this information may lead to the identification of principles that could refine the treatment of cancer and chronic infection by immune stimulation or autoimmunity and allograft rejection through immune tolerance.
journal_name
BMC Genomicsjournal_title
BMC genomicsauthors
Worschech A,Chen N,Yu YA,Zhang Q,Pos Z,Weibel S,Raab V,Sabatino M,Monaco A,Liu H,Monsurró V,Buller RM,Stroncek DF,Wang E,Szalay AA,Marincola FMdoi
10.1186/1471-2164-10-301subject
Has Abstractpub_date
2009-07-07 00:00:00pages
301issn
1471-2164pii
1471-2164-10-301journal_volume
10pub_type
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