Abstract | PURPOSE: Although gemcitabine, a deoxycytidine analogue, recently demonstrated improvements in the response rate for pancreatic cancer, the median survival for patients is limited to 4-6 months. The purpose of the present study was to develop trans-tissue delivery of gemcitabine, which is based on photocured gelatin gel immobilized with gemcitabine, and to validate whether such a system inhibits the growth of the pancreatic tumor in vivo. EXPERIMENTAL DESIGN: The in vitro release profile of gel-embedded gemcitabine from a gel was examined based on in vitro chemosensitivity of AsPC1 cell (human pancreatic cancer cell line) for gemcitabine. The permeation of gel-embedded rhodamine B (used as a model drug) into tissues and inhibitory effect of tumor growth of photocured gelatin gel immobilized with gemcitabine were examined using in vivo s.c. tumor model of athymic mice. RESULTS: CONCLUSIONS: In situ trans-tissue gemcitabine delivery on the tissue with possibly remnant cancer cells using the drug-releasing matrix developed here is expected to reduce the rate of local recurrence for patients with pancreatic cancer.
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Authors | Hidenobu Okino, Ryo Maeyama, Tatsuya Manabe, Takehisa Matsuda, Masao Tanaka |
Journal | Clinical cancer research : an official journal of the American Association for Cancer Research
(Clin Cancer Res)
Vol. 9
Issue 15
Pg. 5786-93
(Nov 15 2003)
ISSN: 1078-0432 [Print] United States |
PMID | 14654564
(Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
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Chemical References |
- Antimetabolites, Antineoplastic
- Delayed-Action Preparations
- Deoxycytidine
- Gelatin
- Gemcitabine
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Topics |
- Animals
- Antimetabolites, Antineoplastic
(pharmacokinetics, therapeutic use)
- Apoptosis
(drug effects)
- Cell Division
(drug effects)
- Cell Line, Tumor
- Delayed-Action Preparations
- Deoxycytidine
(analogs & derivatives, pharmacokinetics, therapeutic use)
- Gelatin
(radiation effects)
- Humans
- Mice
- Mice, Nude
- Pancreatic Neoplasms
(drug therapy, pathology)
- Tissue Distribution
- Transplantation, Heterologous
- Gemcitabine
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