Research Papers:

Role of LOXL2 in the epithelial-mesenchymal transition and colorectal cancer metastasis

Pil-Gu Park, Su Ji Jo, Min Jung Kim, Hyun Jeong Kim, Ji Hae Lee, Cheol Keun Park, Hyunki Kim, Kang Young Lee, Hoguen Kim, Jeon Han Park, Seung Myung Dong and Jae Myun Lee _

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Oncotarget. 2017; 8:80325-80335. https://doi.org/10.18632/oncotarget.18170

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Pil-Gu Park1,*, Su Ji Jo1,2,*, Min Jung Kim1,3, Hyun Jeong Kim4, Ji Hae Lee5, Cheol Keun Park6, Hyunki Kim6, Kang Young Lee7, Hoguen Kim2,6, Jeon Han Park1, Seung Myung Dong5,8 and Jae Myun Lee1,2

1Department of Microbiology and Immunology, Yonsei University College of Medicine, Seoul, Republic of Korea

2BK21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, Republic of Korea

3Department of Pediatrics, Severance Hospital, Institute of Allergy, Yonsei University College of Medicine, Seoul, Republic of Korea

4Department of Nuclear Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea

5Research Institute, National Cancer Center, Goyang, Republic of Korea

6Department of Pathology, Yonsei University, College of Medicine, Seoul, South Korea

7Department of Surgery, Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea

8IMK Bio-Convergence R&D Center, International Vaccine Institute SNU Research Park, Seoul, Republic of Korea

*These authors contributed equally to this work

Correspondence to:

Jae Myun Lee, email: jaemyun@yuhs.ac

Seung Myung Dong, email: smdongstar@gmail.com

Keywords: colorectal cancer, metastasis, LOXL2, epithelial-mesenchymal transition, tissue microarray analysis

Received: March 24, 2017     Accepted: May 11, 2017     Published: May 25, 2017


Colorectal cancer (CRC) is one of the most dangerous types of malignant tumors, and cancer metastasis is a major factor in the failure of CRC therapy. Recently, LOXL2 (lysyl oxidase-like 2) has been shown to represent a regulator of epithelial-mesenchymal transition (EMT) in different cancer types. However, LOXL2 has not been reported to be involved in CRC metastasis. In this study, we demonstrated that LOXL2 expression is strongly correlated with the rate of CRC metastasis, it participates in the regulation of EMT-related molecule expression in CRC cells in vitro, and it is involved in migratory potential alterations. Additionally, tissue microarray analysis of CRC patients showed an increase in the probability of developing CRC distant metastasis and a decrease in the survival rate of patients with high LOXL2 expression. The results obtained in this study indicate that LOXL2 is involved in the development and progression of CRC metastasis, and therefore, its expression levels may represent a useful prognostic marker.

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