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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
7
pubmed:dateCreated
2011-6-15
pubmed:abstractText
Gene therapy shows promising application in cancer therapy, but the lack of an ideal gene delivery system is still a tough challenge for cancer gene therapy. Previously, we prepared a novel cationic nanogel, heparin-polyethylenimine (HPEI), which had potential application in gene delivery. In the present study, we constructed a plasmid with high expression efficiency of interleukin-15 (IL15) and investigated the effects HPEI-plasmid IL15 (HPEI-pIL15) complexes on the distribution level of the lung. We then evaluated the anticancer effect of HPEI-pIL15 complexes on lung metastases of B16-F10 melanoma and CT26 colon carcinoma. These results demonstrated that intravenous injection of the HPEI-pIL15 complex exhibited the highest plasmid distribution level in the lung compared with that of PEI2K-pIL15 and PEI25K-pIL15, and mice treated with HPEI-pIL15 had a lower tumor metastasis index compared with other treatment groups. Moreover, the number of natural killer cells, which were intermingled among the tumor cells, and the level of tumor necrosis factor-? and interferon-? in the serum also increased in the pIL15-treated mice. Furthermore, the cytotoxic activity of spleen cells also increased significantly in the HPEI-pIL15 group. In addition, induction of apoptosis and inhibition of cell proliferation in lung tumor foci in the HPEI-pIL15 group was observed. Taken together, treating lung metastasis cancer with the HPEI nanogels delivered by plasmid IL15 might be a new and interesting cancer gene therapy protocol.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
1349-7006
pubmed:author
pubmed:copyrightInfo
© 2011 Japanese Cancer Association.
pubmed:issnType
Electronic
pubmed:volume
102
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1403-9
pubmed:meshHeading
pubmed-meshheading:21564417-Animals, pubmed-meshheading:21564417-Apoptosis, pubmed-meshheading:21564417-CHO Cells, pubmed-meshheading:21564417-Cricetinae, pubmed-meshheading:21564417-Cricetulus, pubmed-meshheading:21564417-Female, pubmed-meshheading:21564417-Gene Therapy, pubmed-meshheading:21564417-Gene Transfer Techniques, pubmed-meshheading:21564417-Heparin, pubmed-meshheading:21564417-Interferon-gamma, pubmed-meshheading:21564417-Interleukin-15, pubmed-meshheading:21564417-Lung Neoplasms, pubmed-meshheading:21564417-Mice, pubmed-meshheading:21564417-Mice, Inbred BALB C, pubmed-meshheading:21564417-Mice, Inbred C57BL, pubmed-meshheading:21564417-Plasmids, pubmed-meshheading:21564417-Polyethylene Glycols, pubmed-meshheading:21564417-Polyethyleneimine, pubmed-meshheading:21564417-Tumor Necrosis Factor-alpha
pubmed:year
2011
pubmed:articleTitle
Antitumoral efficacy by systemic delivery of heparin conjugated polyethylenimine-plasmid interleukin-15 complexes in murine models of lung metastasis.
pubmed:affiliation
State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan, China.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't