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Promotion of tumor progression and cancer stemness by MUC15 in thyroid cancer via the GPCR/ERK and integrin-FAK signaling pathways

 Cheolwon Choi  ;  Nguyen Thi Thao Tran  ;  Trinh Van Ngu  ;  Sae Woong Park  ;  Min Suk Song  ;  Sung Hyun Kim  ;  Yun-Ui Bae  ;  Penchatr Diskul Na Ayudthaya  ;  Javaria Munir  ;  Eunbit Kim  ;  Moo-Jun Baek  ;  Sujung Song  ;  Seongho Ryu  ;  Kee-Hyun Nam 
 ONCOGENESIS, Vol.7(11) : 85, 2018 
Journal Title
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Thyroid cancer is the fifth most common cancer diagnosed in women worldwide. Notwithstanding advancements in the prognosis and treatment of thyroid cancer, 10-20% of thyroid cancer patients develops chemotherapeutic resistance and experience relapse. According to previous reports and TCGA database, MUC15 (MUCIN 15) upregulation is highly correlated with thyroid cancer progression. However, the role of MUC15 in tumor progression and metastasis is unclear. This study aimed to investigate factors mediating cancer stemness in thyroid cancer. MUC15 plays an important role in sphere formation, as an evident from the expression of stemness markers including SOX2, KLF4, ALDH1A3, and IL6. Furthermore, ectopic expression of MUC15 activated extracellular signal-regulated kinase (ERK) signaling via G-protein-coupled receptor (GPCR)/cyclic AMP (cAMP) and integrin/focal adhesion kinase pathways. Interestingly, ectopic expression of MUC15 did not affect RAF/mitogen-activated protein kinase kinase (MEK)-mediated ERK activation. The present findings may provide novel insights into the development of diagnostic, prognostic, and therapeutic applications of MUC15 in thyroid cancer.
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1. College of Medicine (의과대학) > Dept. of Surgery (외과학교실) > 1. Journal Papers
Yonsei Authors
Nam, Kee Hyun(남기현) ORCID logo https://orcid.org/0000-0002-6852-1190
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