NIR‐II Photoacoustic Reporter for Biopsy‐Free and Real‐Time Assessment of Wilson's Disease. Issue 26 (3rd June 2021)

• Record Type: Journal Article
• Authors: Fu, Qinrui; Ye, Jiamin; Wang, Juejun; Liao, Naishun; Feng, Hongjuan; Su, Lichao; Ge, Xiaoguang; Yang, Huanghao; Song, Jibin
• Is Part Of: Small. Volume 17:Issue 26(2021)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2021-06-03
• Subjects: biosensing -- NIR‐II -- photoacoustic imaging -- ratiometric nanoprobe -- Wilson's disease; Nanotechnology -- Periodicals; Nanoparticles -- Periodicals; Microtechnology -- Periodicals; 620.5
• DOI: 10.1002/smll.202008061
• Languages: English
• ISSNs: 1613-6810

Abstract

Abstract: Wilson's disease (WD) is a rare inherited disorder of copper metabolism with pathological copper hyperaccumulation in some vital organs. However, the clinical diagnosis technique of WD is complicated, aggressive, and time‐consuming. In this work, a novel ratiometric photoacoustic (PA) imaging nanoprobe in the NIR‐II window is developed to achieve noninvasive, rapid, and accurate Cu 2+ quantitative detection in vitro and in vivo. The nanoprobe consists of Cu 2+ ‐responsive IR970 dye and a nonresponsive palladium‐coated gold nanorod (AuNR‐Pd), achieving a concentration‐dependent ratiometric PA970 /PA1260 signal change. The urinary Cu 2+ content is detectable within minutes down to a detection limit of 76 × 10 −9 m . This report acquisition time is several orders of magnitude shorter than those of existing detection approaches requiring complex procedure. Moreover, utilizing the ratiometric PA nanoprobe, PA imaging enables biopsy‐free measurement of the liver Cu 2+ content and visualization of the liver Cu 2+ biodistribution of WD patient, which avoid the body injury during the clinical Cu 2+ test using liver biopsy method. The NIR‐II ratiometric PA detection method is simple and noninvasive with super precision, celerity, and simplification, which holds great promise as an alternative to liver biopsy for clinical diagnosis of WD. Abstract : Quantitative detection of urinary Cu 2+ and in vivo visualization of Wilson's disease‐involved Cu 2+ distribution in the liver with rapidity, sensitivity and noninvasion can be achieved via the second near‐infrared window ratiometric photoacoustic nanoprobe. The simple, time‐saving, visual and safe method can act as an alternative to the current clinical detection methods for the Wilson's disease diagnosis.