Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2001-2-21
pubmed:abstractText
Interleukin-12 (IL-12) mediates significant antitumor effects in animal models but associated with dose-dependent toxicity in human. To achieve local expression of IL-12 at the tumor site without systemic toxicity, we performed intra-arterial administration of fibroblasts genetically engineered to produce IL-12 protein with or without retrovirus (CRIP- IL-12 or 3T3-IL-12) in liver metastasis model. Rat breast cancer cells ( MADB - 106) were injected into the portal vein of syngeneic Fisher rats on day 0, and fibroblasts were injected into the hepatic artery on day 7. On day 21, liver weight and number of liver tumors were examined. As controls, CRIP cells expressing retrovirus carrying lacZ marker gene (CRIP-lacZ) or saline (Hanks balanced salt solution, HBSS) were injected. Administration of CRIP-IL-12 significantly reduced tumor metastasis in liver measured by number of foci (CRIP- IL-12: 45.2 +/- 36.7, CRIP-lacZ: >250, HBSS: >250, P<.05) and by liver weight (CRIP-IL-12: 13.0+/-2.5 g, CRIP-lacZ: 30.4+/-8.5 g, HBSS: 26.0+/-7.6 g, P<.05). 3T3-IL-12, which produced only IL-12 protein but not IL-12 retrovirus, also had significant antitumor effects equivalent to CRIP-IL-12. Intra-arterial injection of IL-12--producing fibroblasts into the liver may be an effective therapy for liver tumors reducing systemic toxicity, and could be developed for clinical application.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
0929-1903
pubmed:author
pubmed:issnType
Print
pubmed:volume
8
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
17-22
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed-meshheading:11219489-3T3 Cells, pubmed-meshheading:11219489-Animals, pubmed-meshheading:11219489-Base Sequence, pubmed-meshheading:11219489-Cell Division, pubmed-meshheading:11219489-Cell Line, pubmed-meshheading:11219489-Female, pubmed-meshheading:11219489-Fibroblasts, pubmed-meshheading:11219489-Green Fluorescent Proteins, pubmed-meshheading:11219489-Immunotherapy, pubmed-meshheading:11219489-Injections, Intra-Arterial, pubmed-meshheading:11219489-Interleukin-12, pubmed-meshheading:11219489-Lac Operon, pubmed-meshheading:11219489-Liver, pubmed-meshheading:11219489-Liver Neoplasms, pubmed-meshheading:11219489-Luminescent Proteins, pubmed-meshheading:11219489-Mice, pubmed-meshheading:11219489-Molecular Sequence Data, pubmed-meshheading:11219489-Neoplasm Metastasis, pubmed-meshheading:11219489-Neoplasm Transplantation, pubmed-meshheading:11219489-Polymerase Chain Reaction, pubmed-meshheading:11219489-RNA, Messenger, pubmed-meshheading:11219489-Rats, pubmed-meshheading:11219489-Rats, Inbred F344, pubmed-meshheading:11219489-Retroviridae
pubmed:year
2001
pubmed:articleTitle
Potent antitumor effects of intra-arterial injection of fibroblasts genetically engineered to express IL-12 in liver metastasis model of rat: no additional benefit of using retroviral producer cell.
pubmed:affiliation
Department of Surgery, University of Pittsburgh, Pennsylvania, USA.
pubmed:publicationType
Journal Article, Comparative Study