Details

Autor(en) / Beteiligte

• Yuan, Yun
• Liu, Ying
• Zhu, Xiang‐Ming
• Hu, Jing
• Zhao, Chen‐Yang
• Jiang, Feng

Titel

Six‐Transmembrane Epithelial Antigen of the Prostate‐1 (STEAP‐1)–Targeted Ultrasound Imaging Microbubble Improves Detection of Prostate Cancer In Vivo

Ist Teil von

• Journal of ultrasound in medicine, 2019-02, Vol.38 (2), p.299-305

Ort / Verlag

Hoboken, USA: John Wiley & Sons, Inc

Erscheinungsjahr

2019

Quelle

Wiley Online Library All Journals

Beschreibungen/Notizen

• Purpose To investigate the feasibility of the 6‐transmembrane epithelial antigen of the prostate‐1 (STEAP‐1)–targeted microbubbles for enhancing ultrasound imaging of prostate tumors in the nude mouse xenograft models. Methods Contrast agents were established by conjugating biotinylated STEAP‐1 monoclonal antibodies with streptavidin coated SonoVue microbubbles. Then, ordinary SonoVue (Bracco, Milan, Italy) microbubble and STEAP‐1–targeted SonoVue microbubble were used, respectively, for contrast‐enhanced sonography to detect prostate tumors in the nude mouse xenograft models. The characteristics, including peak intensity, time to peak, area under the curve, and mean transit time, were measured. Results The biological characteristics of STEAP‐1–targeted SonoVue microbubbles were stable. STEAP‐1–targeted SonoVue microbubbles can successfully conjugate to prostate cancer cell lines in vitro. Enhancement of ultrasound signal intensity was determined after injection of STEAP‐1–targeted SonoVue microbubble, compared with ordinary SonoVue microbubble. Higher intensities of ultrasound signals in xenograft tumor of prostate cancer were associated with increased levels of STEAP‐1 expression. Conclusion Our results suggest that SonoVue microbubble carrying STEAP‐1 monoclonal antibody could improve the ultrasound visualization of prostate cancer and identify the tumor more effectively in vivo. A prospective study is required to validate our finding in patients with prostate cancer.