In vivo near-infrared fluorescent optical imaging for CNS drug discovery. (2nd August 2020)

• Record Type: Journal Article
• Authors: Moreno, Maria J.; Ling, Binbing; Stanimirovic, Danica B.
• Is Part Of: Expert opinion on drug discovery. Volume 15:Number 8(2020)
• Page Start: 903
• Page End: 915
• Publication Date: 2020-08-02
• Subjects: Fluorescent optical imaging -- near infrared -- shortwave infrared -- indocyanine green -- quantum dots -- single wall carbon nanotubes -- central nervous system -- indium gallium arsenide (InGaAs) camera -- brain vasculature -- brain cancer; 615.1
• DOI: 10.1080/17460441.2020.1759549
• Languages: English
• ISSNs: 1746-0441

Abstract

ABSTRACT: Introduction: In vivo imaging technologies have become integral and essential component of drug discovery, development, and clinical assessment for central nervous system (CNS) diseases. Near-infrared (NIR) fluorescence imaging in the range of 650–950 nm is widely used for pre-clinical in vivo imaging studies. The recent expansion of NIR imaging into the shortwave infrared (SWIR, 1000–1700 nm) window enabled improvements in tissue penetration and resolution required for anatomical, dynamic, and molecular neuroimaging with high potential for clinical translation. Areas covered: This review focuses on the latest progress in near-infrared (NIR)-fluorescent optical imaging modalities with an emphasis on the SWIR window. Advantages and challenges in developing novel organic and inorganic SWIR emitters, with special attention to their toxicology and pharmacology, are discussed. Examples of their application in preclinical imaging of brain function and pathology provide a platform to assess the potential for their clinical translation. Expert opinion: Propelled through concomitant technological advancements in imaging instrumentation, algorithms and new SWIR emitters, SWIR imaging has addressed key barriers to optical imaging modalities used in pre-clinical studies addressing the CNS. Development of biocompatible SWIR emitters and adoption of SWIR into multi-modal imaging modalities promise to rapidly advance optical imaging into translational studies and clinical applications.