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| 1 | IN VIVO NEAR-INFRAREDFLUORESCENCEIMAGING OF HUMANCOLONADENOCARCINOMABY SPECIFIC IMMUNOTARGETINGOFA TUMOR-ASSOCIATEDMUCIN显示文摘Background and Aims: Accurate endoscopic detection of premalignant lesions and earlycancers in the colon is essential for cure, since prognosis is closely related to lesion size andstage. Although it has great clinical potential, autofluorescence endoscopy has limited tumorto-normal tissue image contrast for detecting small preneoplastic lesions. We have developed amolecularly specific, near-infrared fluorescent monoclonal antibody (CC49) bioconjugate whichtargets tumor-associated glycoprotein 72 (TAG72), as a contrast agent to improve fluorescencebased endoscopy of colon cancer. Methods: The fluorescent anti-TAG72 conjugate was evaluated in vitro and in vivo in athymic nude mice bearing human colon adenocarcinoma (LS174T)subcutaneous tumors. Autofluorescence, a fluorescent but irrelevant antibody and the free fluorescent dye served as controls. Fluorescent agents were injected intravenously, and in vivowhole body fluorescence imaging was performed at various time points to determine pharmacokinetics, followed by ex vivo tissue analysis by confocal fluorescence microscopy and histology Results: Fluorescence microscopy and histology confirmed specific LS174T cell membrane targeting of labeled CC49 in vitro and ex vivo. In vivo fluorescence imaging demonstrated significant tumor-to-normal tissue contrast enhancement with labeled-CC49 at three hours postinjection, with maximum contrast after 48 h. Accumulation of tumor fluorescence demonstratedthat modification of CC49 antibodies did not alter their specific tumor-localizing properties, andwas antibody-dependent since controls did not produce detectable tumor fluorescence. Conclusions: These results show proof-of-principle that our near-infrared fluorescent-antibody probetargeting a tumor-associated mucin detects colonic tumors at the molecular level in real time,and offer a basis for future improvement of image contrast during clinical fluorescence endoscopy. | RALPH S.DACOSTA YING TANG TUULA KALLIOMAKI RAYMOND M.REILLY ROBERT WEERSINK ALISHA R.ELFORD NORMAN E.MARCON BRIAN C.WILSON | 2009 | Journal of Innovative Optical Health Sciences2009，2，4： | 0 |
| 2 | SINGLET OXYGEN DETECTION DURING PHOTOSENSITIZATION显示文摘Singlet oxygen(^(1)O_(2))is a highly reactive oxygen species involved in numerous chemical and photochemical reactions in diferent biological systems and in particular,in photodynamic therapy(PDT).However,the quantifcation of^(1)O_(2) generation during in vitro and in vivo pho-tosensitization is still technically challenging.To address this problem,indirect and direct methods for^(1)O_(2)detection have been intensively studied.This review presents the available methods currently in use or under development for detecting and quantifying^(1)O_(2) generation during photosensitization.The advantages and limitations of each method will be presented.Moreover,the future trends in developing PDT-^(1)O_(2) dosimetry will be briefly discussed. | BUHONG LI HUIYUN LIN DEFU CHEN BRIAN C.WILSON YING GU | 2013 | Journal of Innovative Optical Health Sciences2013，6，1： | 0 |
| 3 | Editorial-Introduction to the Special Issue on Photodynamic Therapy显示文摘Photodynamic therapy(PDT)is a minimally invasive treatment for malignant and nonmalignant diseases that uses light-activated photosensitizers to destroy or modify cells or tissues.It has been approved by health agencies in several countries for cancers of different sites and stages,and for treatment of age related macular degeneration,various benign skin conditions and localized bacterial infections. | Buhong Li Brian C.Wilson | 2015 | Journal of Innovative Optical Health Sciences2015，8，1： | 0 |
| 4 | Correlation of in vivo tumor response and singlet oxygen luminescence detection in mTHPC-mediated photodynamic therapy显示文摘Excited-state singlet axygen(^(1)O_(2)),generated during photodynamic therapy(PDT),is believed to be the primary cytotoxic agent with a number of clinically approved photosensitizers.Its relative concentration in cells or tissues can be measured directly through its near-infrared(NIR)luminescence emission,which has correlated well with in vitro cell and in triro normal skin treatment responses.Here,its correlation with the response of tumor tiss1e in vito is examined,using the photosensitizer meso-tetralydroxyphenylchlorin(mTHPC)in an animal model comprising luciferase-and green fluorescent protein(GFP)-transduced gliosarcoma grown in a dorsal window chamber.The change in the bioluminescence signal,imaged pre-treatment and at 2,5 and 9 d post treatment,was used as a quantitative measure of the tumor response,which was classified in individual tumors as'non','moderate'and'strong'in order to reduce the variance in the data.Plotting the bioluminescence-based response vs the^(1)O_(2)counts demonstrated clear correlation,indicating tha^(1)O_(2)luminescence provides a valid do-simetric technique for PDT in tumor tissue. | Brian C.Wilson Michael S.Patterson Buhong Li Mark T.Jarvi | 2015 | Journal of Innovative Optical Health Sciences2015，8，1： | 0 |
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