In vivo internal tumor illumination by telomerase-dependent adenoviral GFP for precise surgical navigation.
Cancer surgery requires the complete and precise identification of malignant tissue margins including the smallest disseminated lesions. Internal green fluorescent protein (GFP) fluorescence can intensely illuminate even single cells but requires GFP sequence transcription within the cell. Introducing and selectively activating the GFP gene in malignant tissue in vivo is made possible by the development of OBP-401, a telomerase-dependent, replication-competent adenovirus expressing GFP. This potentially powerful adjunct to surgical navigation was demonstrated in 2 nude mouse models that represent difficult surgical challenges--the resection of widely disseminated cancer. HCT-116, a model of intraperitoneal disseminated human colon cancer, was labeled by virus injection into the peritoneal cavity. A549, a model of pleural dissemination of human lung cancer, was labeled by virus administered into the pleural cavity. Only the malignant tissue fluoresced brightly in both models. In the intraperitoneal model of disseminated cancer, fluorescence-guided surgery enabled resection of all tumor nodules labeled with GFP by OBP-401. The data in this report suggest that adenoviral-GFP labeling tumors in patients can enable fluorescence-guided surgical navigation.
Kishimoto
Hiroyuki
H
AntiCancer, Inc, San Diego, CA 92111, USA.
Zhao
Ming
M
Hayashi
Katsuhiro
K
Urata
Yasuo
Y
Tanaka
Noriaki
N
Fujiwara
Toshiyoshi
T
Penman
Sheldon
S
Hoffman
Robert M
RM
D000256:Adenoviridae / Q000235:genetics; D000818:Animals; D002460:Cell Line; D045744:Cell Line, Tumor; D005453:Fluorescence; D049452:Green Fluorescent Proteins / Q000737:chemistry / Q000235:genetics / Q000378:metabolism*; D045325:HCT116 Cells; D019073:HT29 Cells; D006801:Humans; D051379:Mice; D008819:Mice, Nude; D008856:Microscopy, Fluorescence; D019060:Minimally Invasive Surgical Procedures / Q000379:methods*; D009374:Neoplasms, Experimental / Q000378:metabolism* / Q000473:pathology / Q000601:surgery; D010534:Peritoneal Neoplasms / Q000378:metabolism / Q000473:pathology / Q000601:surgery; D011993:Recombinant Fusion Proteins / Q000737:chemistry / Q000235:genetics / Q000378:metabolism; D015203:Reproducibility of Results; D019098:Telomerase / Q000378:metabolism*; D014183:Transplantation, Heterologous
D011993:Recombinant Fusion Proteins; D049452:Green Fluorescent Proteins; D019098:Telomerase
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