Molecular Hyperthermia: Spatiotemporal Protein Unfolding and Inactivation by Nanosecond Plasmonic Heating

Peiyuan Kang, Zhuo Chen, Steven O. Nielsen, Kenneth Hoyt, Sheena D'Arcy, Jeremiah J. Gassensmith, Zhenpeng Qin

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

Spatiotemporal control of protein structure and activity in biological systems has important and broad implications in biomedical sciences as evidenced by recent advances in optogenetic approaches. Here, this study demonstrates that nanosecond pulsed laser heating of gold nanoparticles (GNP) leads to an ultrahigh and ultrashort temperature increase, coined as “molecular hyperthermia”, which causes selective unfolding and inactivation of proteins adjacent to the GNP. Protein inactivation is highly dependent on both laser pulse energy and GNP size, and has a well-defined impact zone in the nanometer scale. It is anticipated that the fine control over protein structure and function enabled by this discovery will be highly enabling within a number of arenas, from probing the biophysics of protein folding/unfolding to the nanoscopic manipulation of biological systems via an optical trigger, to developing novel therapeutics for disease treatment without genetic modification.

Original languageEnglish (US)
Article number1700841
JournalSmall
Volume13
Issue number36
DOIs
StatePublished - Sep 27 2017

Keywords

  • gold nanoparticles
  • laser heating
  • protein inactivation
  • protein unfolding
  • thermoplasmonics

ASJC Scopus subject areas

  • Biotechnology
  • Biomaterials
  • Chemistry(all)
  • Materials Science(all)

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