Hannah Barthel

Hannah Barthel

Auto-generated profile, based on publicly available information

Hannah Barthel

A Max Planck Institute for Biophysical Chemistry , Department of NanoBiophotonics , Am Fassberg 11 , 37077 Göttingen , Germany

Research Focus & Metrics

Academic Career Length

9Years (2018-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

View All Publications
26 February 2018 in Chemical Science
Verified
Journal Article
Open access
PDF file
GLGrazvydas Lukinavicius
Grazvydas Lukinavicius
GMGyuzel Mitronova
Gyuzel Mitronova
SSSebastian Schnorrenberg
Sebastian Schnorrenberg
ABAlexey N. Butkevich
Alexey N. Butkevich
HBHannah Barthel
Hannah Barthel
SHStefan W. Hell
Stefan W. Hell
We introduce fluorogenic tubulin probes based on the recently reported fluorescent dyes (510R, 580CP, GeR and SiR) and chemotherapy agents – taxanes (docetaxel, cabazitaxel and larotaxel). The cytotoxicity of the final probe, its staining performance and specificity strongly depend on both components. We found correlation between the aggregation efficiency (related to the spirolactonization of fluorophore) and cytotoxicity. Probe optimization allowed us to reach 29 ± 11 nm resolution in stimulated emission depletion (STED) microscopy images of the microtubule network in living human fibroblasts. Application to living fruit fly (Drosophila melanogaster) tissues highlighted two distinct structures: microtubules and tracheoles. We identified 6-carboxy isomers of 580CP and SiR dyes as markers for chitin-containing taenidia, a component of tracheoles. STED microscopy revealed correlation between the taenidia periodicity and the diameter of the tracheole. Combined tubulin and taenidia STED imaging showed close interaction between the microtubules and respiratory networks in living tissues of the insect larvae.