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논문 기본 정보

자료유형
학술저널
저자정보
Hee Sang Hwang (Department of Pathology Asan Medical Center University of Ulsan College of Medicine Seoul Korea) 박윤용 (울산대학교) Su-Jin Shin (Department of Pathology College of Medicine Hanyang University) Heounjeong Go (Asan Medical Center University of Ulsan College of Medicine Seoul Korea) Ja-Min Park (Asan Medical Center) Sun Young Yoon (Asan Medical Center) Jae Lyun Lee (Asan Medical Center University of Ulsan) Yong Mee Cho (Asan Medical Center University of Ulsan College of Medicine Seoul Korea)
저널정보
대한의학회 Journal of Korean Medical Science Journal of Korean Medical Science Vol.35 No.5
발행연도
2020.1
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1 - 12 (12page)

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Background: Mechanism and predictive biomarkers for tyrosine kinase inhibitor (TKI) resistance of advanced clear cell renal cell carcinoma (ccRCC) have not been fully evaluated. Methods: We performed gene expression profiling on samples from an acquired TKI resistance cohort that consisted of 10 cases of TKI-treated ccRCC patients with matched tumor tissues harvested at pre-treatment and TKI-resistant post-treatment periods. In addition, a public microarray dataset from patient-derived xenograft model for TKI-treated ccRCC (GSE76068) was retrieved. Commonly altered pathways between the datasets were investigated by Ingenuity Pathway Analysis using commonly regulated differently expressed genes (DEGs). The significance of candidate DEG on intrinsic TKI resistance was assessed through immunohistochemistry in a separate cohort of 101 TKI-treated ccRCC cases. Results: TNFRSF1A gene expression and tumor necrosis factor (TNF)-α pathway were upregulated in ccRCCs with acquired TKI resistance in both microarray datasets. Also, high expression (> 10% of labeled tumor cells) of TNF receptor 1 (TNFR1), the protein product of TNFRSF1A gene, was correlated with sarcomatoid dedifferentiation and was an independent predictive factor of clinically unfavorable response and shorter survivals in separated TKI- treated ccRCC cohort. Conclusion: TNF-α signaling may play a role in TKI resistance, and TNFR1 expression may serve as a predictive biomarker for clinically unfavorable TKI responses in ccRCC.

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