AIEgen-based nanoprobe for the ATP sensing and imaging in cancer cells and embryonic stem cells

Anal Chim Acta. 2021 Apr 1:1152:338269. doi: 10.1016/j.aca.2021.338269. Epub 2021 Feb 2.

Abstract

A turn-on fluorescent nanoprobe (named AAP-1), based on an aggregation-induced emission luminogen (AIEgen), is disclosed for the detection of adenosine triphosphate (ATP), which is an essential element in the biological system. Organic fluorophore (named TPE-TA) consists of tetraphenylethylene (TPE, sensing and signaling moiety) and mono-triamine (TA, sensing moiety), and it forms an aggregated form in aqueous media as a nanoprobe AAP-1. The nanoprobe AAP-1 has multiple electrostatic interactions as well as hydrophobic interactions with ATP, and it displays superior selectivity toward ATP, reliable sensitivity, with a detection limit around 0.275 ppb, and fast responsive (signal within 10 s). Such a fluorescent probe to monitor ATP has been actively pursued throughout fundamental and translational research areas. In vitro assay and a successful cellular ATP imaging application was demonstrated in cancer cells and embryonic stem cells. We expect that our work warrants further ATP-related studies throughout a variety of fields.

Keywords: Adenosine triphosphate (ATP); Aggregation-induced emission (AIE); Cellular imaging; Fluorescent probes; Nanoprobe.

MeSH terms

  • Adenosine Triphosphate*
  • Embryonic Stem Cells
  • Fluorescent Dyes
  • Hydrophobic and Hydrophilic Interactions
  • Neoplasms*
  • Static Electricity

Substances

  • Fluorescent Dyes
  • Adenosine Triphosphate