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Cripto-1 expression and its prognostic value in human bladder cancer patients.

Bingbing Wei1, Wei Jin, Jun Ruan

  • 1Department of Urology, Affiliated Wuxi People's Hospital, Nanjing Medical University, 299 Qingyang Road, Wuxi, 214023, China, bingbingwei@hotmail.com.

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Summary

High Cripto-1 expression in bladder cancer correlates with larger tumor size and poorer survival. This embryonic gene may serve as a prognostic biomarker for bladder cancer recurrence and metastasis.

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Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • Cripto-1 is an embryonic gene crucial for stem cell self-renewal and pluripotency.
  • Overexpression of Cripto-1 is linked to tumorigenesis, recurrence, and metastasis in various cancers.
  • Cripto-1 shows potential as a prognostic biomarker for several malignancies.

Purpose of the Study:

  • To investigate the expression pattern of Cripto-1 in human bladder cancer.
  • To determine the clinicopathological significance of Cripto-1 in bladder cancer patients.
  • To evaluate Cripto-1 as a prognostic marker for bladder cancer recurrence and metastasis.

Main Methods:

  • Real-time quantitative RT-PCR (qRT-PCR) for Cripto-1 expression in paired bladder tissues.
  • Immunohistochemistry and immunofluorescence assays for Cripto-1 in 130 bladder cancer specimens and cell lines.
  • Kaplan-Meier analysis, log-rank test, and Cox regression for survival and prognostic factor analysis.

Main Results:

  • Cripto-1 expression was significantly elevated in bladder cancer tissues compared to non-cancerous tissues.
  • Increased Cripto-1 expression correlated with larger tumor size and higher tumor grade.
  • High Cripto-1 levels were associated with poorer recurrence/metastasis-free survival and correlated with SOX2 and Ki-67 expression.

Conclusions:

  • Elevated Cripto-1 expression is implicated in bladder cancer development.
  • Cripto-1 may serve as an independent prognostic factor for recurrence/metastasis-free survival in bladder cancer.
  • Cripto-1 is a potential prognostic biomarker for bladder cancer patients.