Yoon, Soon Man Myung, Seung-Jae Kim, In-Wha Do, Eun-Ju Ye, Byong Duk Ryu, Ju Hee Park, Kyeongsoon Kim, Kwangmeyung Kwon, Ick Chan Kim, Mi Jung Moon, Dae Hyuk Yang, Dong-Hoon Kim, Kyoung Jo Byeon, Jeong-Sik Yang, Suk-Kyun Kim, Jin-Ho 2024-01-20T16:04:27Z 2024-01-20T16:04:27Z 2021-09-05 2011-10 0163-2116 https://pubs.kist.re.kr/handle/201004/129932 Early and accurate detection of adenomatous colonic polyps is a major concern in the prevention of colon cancer. Near-infrared fluorescence (NIRF) imaging with optical probes targeting specific peptides enables the noninvasive visualization and characterization of lesions. Matrix metalloproteinases (MMPs) are known to play an important role in tumorigenesis and tumor progression. To investigate the effectiveness of NIRF imaging, with a novel MMP-activatable probe based on a polymeric nanoparticle platform, in the colon cancer models. We used an azoxymethane (AOM)-induced mouse colon cancer model resembling human sporadic colon cancer and an MMP-positive xenograft tumor model. MMP expression was evaluated by Western blotting, real-time PCR, and immunohistochemical staining. NIRF imaging was performed with a novel MMP-activatable probe, an MMP-inactivatable probe, and saline. In addition, we observed the change of NIRF signal intensity after intratumoral administration of an MMP-inhibitor. Multiple tumors with various sizes developed in AOM-treated mouse colons, progressing from adenomas to adenocarcinomas, with MMP expression progressively increasing in the normal-adenoma-adenocarcinoma sequence. In mice injected with the MMP-activatable probe, the NIRF signal also increased in this sequence and was highly correlated with MMP expression (p < 0.001). Tumor-background-ratios (TBR) of adenocarcinoma to adjacent normal mucosa by a novel probe were significantly higher than that of adenoma (p < 0.001). In both the AOM and xenograft models, NIRF signals of tumors decreased after treatment with an MMP-inhibitor. NIRF imaging using a polymeric nanoparticle-based probe may be useful for detecting early stage disease and for assessing treatment response. English SPRINGER COLORECTAL-CANCER MATRIX METALLOPROTEINASES ADENOMAS COLONOSCOPIES EXPRESSION TUMORS MICE Application of Near-Infrared Fluorescence Imaging Using a Polymeric Nanoparticle-Based Probe for the Diagnosis and Therapeutic Monitoring of Colon Cancer Article 10.1007/s10620-011-1685-z 1 DIGESTIVE DISEASES AND SCIENCES, v.56, no.10, pp.3005 - 3013 DIGESTIVE DISEASES AND SCIENCES 56 10 3005 3013 scie scopus 000295164600049 2-s2.0-80054766164 Gastroenterology & Hepatology Gastroenterology & Hepatology Article COLORECTAL-CANCER MATRIX METALLOPROTEINASES ADENOMAS COLONOSCOPIES EXPRESSION TUMORS MICE Colon cancer Near-infrared fluorescence Nanoparticles Matrix metalloproteinases