Profiling the Biological Characteristics and Transitions through Upper Tract Tumor Origin, Bladder Recurrence and Muscle-Invasive Bladder Progression in Upper Tract Urothelial Carcinoma

Keisuke Shigeta, Kazuhiro Matsumoto, Nobuyuki Tanaka, Shuji Mikami, Takeo Kosaka, Yota Yasumizu, Toshikazu Takeda, Ryuichi Mizuno, Eiji Kikuchi, Mototsugu Oya

Research output: Contribution to journalArticlepeer-review

Abstract

To evaluate biological characteristics and transitions of upper tract urothelial carcinoma (UTUC) through metachronous bladder tumors after radical nephroureterectomy (RNU), we con-ducted immunohistochemical (IHC) staining of tumor specimens of UTUC tumor origin, non-mus-cle-invasive bladder cancer (NMIBC) and MIBC progressed after intravesical recurrence (IVR), and bladder primary MIBC. Fibroblast growth factor receptor 3 (FGFR3), p53, cytokeratin 5/6 (CK5/6), and CK20 were stained to examine expression rates. After expression assessment with heatmap clustering, the overexpression of four biomarkers from UTUC origin to metachronous MIBC progression was analyzed with clinicopathological variables. We found that high CK20 and low CK5/6 expression were both observed in UTUC tumor origin and subsequent NMIBC after RNU. By in-vestigating molecular expression in the IVR specimen, we observed that low pT stage bladder recurrence occupied the majority of CK20 high CK5/6 low expression, but would change to CK20 low CK5/6 high expression as it progressed to MIBC. UTUC metachronous MIBC has different characteristics compared with bladder primary MIBC, which comprises favorable biological features such as high FGFR3 expression, and follows favorable prognosis compared to those without FGFR3 ex-pression. The present study demonstrated that the biological characteristics of UTUC tumor origin shifts from luminal to basal-like features with progression to MIBC, but FGFR3 expression taken over from UTUC origin may comprise a favorable entity compared to primary MIBC.

Original languageEnglish
Article number5154
JournalInternational journal of molecular sciences
Volume23
Issue number9
DOIs
Publication statusPublished - 2022 May 1

Keywords

  • fibroblast growth factor receptor 3
  • intravesical recurrence
  • molecular characteristic
  • muscle-invasive bladder carcinoma
  • upper tract urothelial carcinoma

ASJC Scopus subject areas

  • Catalysis
  • Molecular Biology
  • Spectroscopy
  • Computer Science Applications
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry

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