Submicron‐Sized In Situ Osmotic Pressure Sensors for In Vitro Applications in Biology

Research output: Contribution to journalResearch articleContributedpeer-review

Contributors

  • Wenbo Zhang - (Author)
  • Luca Bertinetti - , Chair of Bioprospecting, Max Planck Institute of Colloids and Interfaces (Author)
  • Efe Cuma Yavuzsoy - (Author)
  • Changyou Gao - (Author)
  • Emanuel Schneck - (Author)
  • Peter Fratzl - (Author)

Abstract

Physical forces are important cues in determining the development and the normal function of biological tissues. While forces generated by molecular motors have been widely studied, forces resulting from osmotic gradients have been less considered in this context. A possible reason is the lack of direct in situ measurement methods that can be applied to cell and organ culture systems. Herein, novel kinds of resonance energy transfer (FRET)-based liposomal sensors are developed, so that their sensing range and sensitivity can be adjusted to satisfy physiological osmotic conditions. Several types of sensors are prepared, either based on polyethylene glycol- (PEG)ylated liposomes with steric stabilization and stealth property or on crosslinked liposomes capable of enduring relatively harsh environments for liposomes (e.g., in the presence of biosurfactants). The sensors are demonstrated to be effective in the measurement of osmotic pressures in pre-osteoblastic in vitro cell culture systems by means of FRET microscopy. This development paves the way toward the in situ sensing of osmotic pressures in biological culture systems.

Details

Original languageEnglish
Article number2202373
JournalAdvanced healthcare materials
Volume12
Issue number9
Publication statusPublished - 5 Apr 2023
Peer-reviewedYes

External IDs

Scopus 85146356335