| Autor: |
Aayush Aayush, Saloni Darji, Deepika Dhawan, Alexander Enstrom, Meaghan M. Broman, Muhammad T. Idrees, Hristos Kaimakliotis, Timothy Ratliff, Deborah Knapp, David Thompson |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
Oncotarget. 13 |
| ISSN: |
1949-2553 |
| Popis: |
Cystoscopic visualization of bladder cancer is an essential method for initial bladder cancer detection and diagnosis, transurethral resection, and monitoring for recurrence. We sought to develop a new intravesical imaging agent that is more specific and sensitive using a polypeptide based NIR (near-infrared) probe designed to detect cells bearing epidermal growth factor receptors (EGFR) that are overexpressed in 80% of urothelial carcinoma (UC) cases. The NIR imaging agent consisted of an elastin like polypeptide (ELP) fused with epidermal growth factor (EGF) and conjugated to Cy5.5 to give Cy5.5-N24-EGF as a NIR contrast agent. In addition to evaluation in human cells and tissues, the agent was tested in canine cell lines and tissue samples with naturally occurring invasive UC. Flow cytometry and confocal microscopy were used to test cell-associated fluorescence of the probe in T24 human UC cells, and in K9TCC-SH (high EGFR expression) and K9TCC-Original (low EGF expression) canine cell lines. The probe specifically engages these cells through EGFR within 15 min of incubation and reached saturation within a clinically relevant 1 h timeframe. Furthermore |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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