Wirelessly Activated Nanotherapeutics for In Vivo Programmable Photodynamic‐Chemotherapy of Orthotopic Bladder Cancer. Issue 16 (7th April 2022)

• Record Type: Journal Article
• Authors: Sun, Bowen; Bte Rahmat, Juwita Norasmara; Kim, Han Joon; Mahendran, Ratha; Esuvaranathan, Kesavan; Chiong, Edmund; Ho, John S.; Neoh, Koon Gee; Zhang, Yong
• Is Part Of: Advanced science. Volume 9:Issue 16(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-04-07
• Subjects: bladder cancer -- photodynamic therapy -- targeted drug delivery -- wireless photonics; Science -- Periodicals; 505
• DOI: 10.1002/advs.202200731
• Languages: English
• ISSNs: 2198-3844

Abstract

Abstract: Photochemical internalization (PCI) is a promising intervention using photodynamic therapy (PDT) to enhance the activity of chemotherapeutic drugs. However, current bladder cancer treatments involve high‐dose chemotherapy and high‐irradiance PDT which cause debilitating side effects. Moreover, low penetration of light and drugs in target tissues and cumbersome light delivery procedures hinder the clinical utility of PDT and chemotherapy combination for PCI. To circumvent these challenges, a photodynamic‐chemotherapy approach is developed comprising tumor‐targeting glycosylated nanocarriers, coloaded with chlorin e6 (Ce6) and gemcitabine elaidate (GemE), and a miniaturized implantable wirelessly powered light‐emitting diode (LED) as a light source. The device successfully delivers four weekly light doses to the bladder while the nanocarrier promoted the specific accumulation of drugs in tumors. This approach facilitates the combination of low‐irradiance PDT (1 mW cm −2 ) and low‐dose chemotherapy (≈1500× lower than clinical dose) which significantly cures and controls orthotopic disease burden (90% treated vs control, 35%) in mice, demonstrating a potential new bladder cancer treatment option. Abstract : Nanocarriers and implanted wireless light generating device enhances therapy by photochemical internalization (PCI). Combined with low‐dose gemcitabine elaidate (GemE), photodynamic therapy (PDT) results in significant treatment response in orthotopic bladder tumors in mice.