Abstract:
:The occurrence of multiple tumors in an organ heralds a rapidly fatal course. Although intravascular administration may deliver oncolytic viruses/vectors to each of these tumors, its efficiency is impeded by an antiviral activity present in complement-depleted plasma of rodents and humans. Here, this activity was shown to interact with complement in a calcium-dependent fashion, and antibody neutralization studies indicated preimmune IgM has a contributing role. Short-term exposure to cyclophosphamide (CPA) partially suppressed this activity in rodents and humans. At longer time points, cyclophosphamide also abrogated neutralizing antibody responses. Cyclophosphamide treatment of rats with large single or multiple intracerebral tumors substantially increased viral survival and propagation, leading to neoplastic regression.
journal_name
Nat Medjournal_title
Nature medicineauthors
Ikeda K,Ichikawa T,Wakimoto H,Silver JS,Deisboeck TS,Finkelstein D,Harsh GR 4th,Louis DN,Bartus RT,Hochberg FH,Chiocca EAdoi
10.1038/11320keywords:
subject
Has Abstractpub_date
1999-08-01 00:00:00pages
881-7issue
8eissn
1078-8956issn
1546-170Xjournal_volume
5pub_type
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