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Expression of sarcosine-metabolizing enzymes in thyroid cancer

 Hye Min Kim  ;  Yu Kyung Lee  ;  Ja Seung Koo 
 International Journal of Clinical and Experimental Pathology, Vol.9(7) : 7132-7139, 2016 
Journal Title
 International Journal of Clinical and Experimental Pathology 
Issue Date
The purpose of this study was to investigate the expression of sarcosine metabolism-related proteins according to thyroid cancer subtypes and the implications of these findings. We performed tissue microarrays of 557 thyroid cancer cases (papillary thyroid carcinoma [PTC]: 344, follicular carcinoma [FC]: 112, medullary carcinoma [MC]: 70, poorly differentiated carcinoma [PDC]: 23, and anaplastic carcinoma [AC]: 8) and 152 follicular adenoma cases. Immunohistochemical staining for sarcosine metabolism-related molecules [glycine N-methyltransferase (GNMT), sarcosine dehydrogenase (SARDH), and l-pipecolic acid oxidase (PIPOX)] was conducted, and the results were analyzed based on clinicopathologic parameters. Results: The expression of SARDH and PIPOX was different depending on thyroid cancer subtypes. PTC showed higher expression than other subtypes (P<0.001). Among PTC, follicular variant (FV) showed lower expression than conventional type (P = 0.010 and P<0.001) and PTC with BRAF V600E mutation showed higher expression than PTC without BRAF V600E mutation (P<0.001). In univariate analysis, PIPOX positivity was associated with shorter overall survival (OS) in PTC (P = 0.024). In conclusion, the expression of sarcosine metabolism-related proteins varied according to thyroid cancer subtypes. SARDH and PIPOX showed higher expression in PTC; among PTC, FVPTC showed lower expression and PTC with BRAF V600E mutation showed higher expression.
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1. College of Medicine (의과대학) > Dept. of Pathology (병리학교실) > 1. Journal Papers
Yonsei Authors
Koo, Ja Seung(구자승) ORCID logo https://orcid.org/0000-0003-4546-4709
Kim, Hye Min(김혜민) ORCID logo https://orcid.org/0000-0002-2899-9480
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