Early diagnosis of bladder cancer by photoacoustic imaging of tumor-targeted gold nanorods. Academic Article uri icon

Overview

abstract

  • Detection and removal of bladder cancer lesions at an early stage is crucial for preventing tumor relapse and progression. This study aimed to develop a new technological platform for the visualization of small and flat urothelial lesions of high-grade bladder carcinoma in situ (CIS). We found that the integrin α5β1, overexpressed in bladder cancer cell lines, murine orthotopic bladder cancer and human bladder CIS, can be exploited as a receptor for targeted delivery of GNRs functionalized with the cyclic CphgisoDGRG peptide (Iso4). The GNRs@Chit-Iso4 was stable in urine and selectively recognized α5β1 positive neoplastic urothelium, while low frequency ultrasound-assisted shaking of intravesically instilled GNRs@Chit-Iso4 allowed the distribution of nanoparticles across the entire volume of the bladder. Photoacoustic imaging of GNRs@Chit-Iso4 bound to tumor cells allowed for the detection of neoplastic lesions smaller than 0.5 mm that were undetectable by ultrasound imaging and bioluminescence.

publication date

  • August 30, 2022

Identity

PubMed Central ID

  • PMC3730317

Scopus Document Identifier

  • 85141468786

Digital Object Identifier (DOI)

  • 10.1016/j.pacs.2022.100400

PubMed ID

  • 36386292

Additional Document Info

volume

  • 28