Julie Karpenko
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juliekarpenko.bsky.social
Julie Karpenko
@juliekarpenko.bsky.social
Associate professor in organic and therapeutic chemistry at the University of Strasbourg.
Fluorescent probes for biomedical applications and chemical (micro)biology.
#ChemBio
www.juliekarpenko.com
🇺🇦🇨🇵
Reposted by Julie Karpenko
#ChemBioParis2025 was the perfect setting to officially present the latest @scf-chembio.bsky.social awards 👏:

- the Thesis Award to @linaelhajji.bsky.social

- the Young investigator award 2024 to @juliekarpenko.bsky.social
and 2025 to @achevalierchembio.bsky.social

📸 Fabien Venturi
October 14, 2025 at 1:35 PM
Je suis très fière de vous annoncer ma nomination en tant que membre junior de l’Institut universitaire de France (IUF), à compter d’octobre 2025, pour y mener des recherches sur la résistance bactérienne et la conception de nouveaux agents antibactériens www.iufrance.fr
June 10, 2025 at 7:20 AM
Reposted by Julie Karpenko
Reposted by Julie Karpenko
Wonder what microbiota does in cancer and therapy? Together with my co-workers in the Hang lab, we reviewed recent progress and discussed current challenges in understanding the role of microbiota in cancer. Check out our review out in @cp-cellchembiol.bsky.social @scripps.edu
May 15, 2025 at 6:44 AM
Reposted by Julie Karpenko
Save the date!!!
For the first time since 2015, the annual conference of the International Chemical Biology Society comes back to Europe and joins forces with the biennal European Chemical Biology Symposium, to organize #ChemBioParis2025, in the heart of the City of Light.
Oct 6-9, 2025.
March 31, 2025 at 11:19 AM
Reposted by Julie Karpenko
Whom would you like to hear at our next event?

The planning for the 5th Virtual ChemBioTalks is starting. We are excited for talks by @oconnorlab.bsky.social, @craigmcrews.bsky.social and Kelly Chibale.

Let us know in reply to this post, whom you would additionally like to hear!
February 24, 2025 at 7:35 AM
Reposted by Julie Karpenko
The SCF-ChemBio Thesis Award has been granted to Lina El Hajji (@linaelhajji.bsky.social) for her outstanding doctoral work under the supervision of Arnaud Gautier in the Laboratoire des Biomolécules (now Chimie Physique et Chimie du Vivant), Paris ! Congratulations! 👏
#ChemBio
February 18, 2025 at 4:03 PM
In part two of the story of #fluorescent #antimicrobial peptide UNR-1, we showcase its exceptional solvatochromism, enabling the analysis of perturbations in the bacterial cell envelope under physical and chemical stress by flow cytometry. #ChemBio pubs.acs.org/doi/10.1021/...
Flow Cytometry Analysis of Perturbations in the Bacterial Cell Envelope Enabled by Monitoring Generalized Polarization of the Solvatochromic Peptide UNR-1
The worldwide spread of antibiotic resistance is considered to be one of the major health threats to society. While developing new antibiotics is crucial, there is also a strong need for next-generation analytical methods for studying the physiological state of live bacteria in heterogeneous populations and their response to environmental stress. Here we report a single-cell high-throughput method to monitor changes in the bacterial cell envelope in response to stress based on ratiometric flow cytometry. We used a sensitive fluorescent molecular probe, the Nile Red-based solvatochromic antimicrobial peptide UNR-1, with defined cellular localization in Gram-positive and Gram-negative bacteria. We also developed a robust protocol for calculating the generalized polarization (GP) of fluorescence adapted to flow cytometry. Our methodology enabled rapid detection of perturbations in the bacterial cell envelope caused by exposure to antibiotics, heat shock, and other factors.
pubs.acs.org
January 28, 2025 at 7:20 PM
Reposted by Julie Karpenko
🚨 Deadline Extended! 🚨

The application deadline for the Young Researcher Award ("Prix JCJC") by SCF-ChemBio is now January 31st! If you’re an early-career scientist working in chemical biology or related fileds, and were recruited after January 1st, 2018, don’t miss your chance to apply!
January 20, 2025 at 11:45 AM
Reposted by Julie Karpenko
As every year, #SCF_ChemBio will award a prize to a young researcher in 2025! The deadline to apply is January 15th, 2025. More details here:
new.societechimiquedefrance.fr/divisions/ch...
Prix JCJC - Société Chimique de France (SCF)
Édition 2025 - Appel à candidatures La division SCF-ChemBio renouvelle l'attribution de son prix jeune chercheur/jeune chercheuse pour l'année 2025.
new.societechimiquedefrance.fr
January 8, 2025 at 11:18 AM
Reposted by Julie Karpenko
#SCF_ChemBio will award a PhD Prize in chemical biology in 2024. The winner will present his/her work at the ICBS/ECBS 2025 Trainee Symposium, which will take place in Paris on Oct 6th, 2025. Deadline: January 15th, 2025. More details here:
new.societechimiquedefrance.fr/divisions/ch...
Prix de thèse - Société Chimique de France (SCF)
Modalités de candidature pour le prix de thèse 2024 SCF-ChemBio attribue un Prix de thèse pour l’année 2024. L’objectif est de récompenser des travaux de
new.societechimiquedefrance.fr
January 8, 2025 at 11:20 AM
Reposted by Julie Karpenko
Bioart, courtesy of the NIH. All images are in the public domain and available for download as high-quality SVGs.
bioart.niaid.nih.gov
December 17, 2024 at 1:15 AM
I’m excited to share the first chapter of the UNR-1 story! UNR-1 is a red #fluorescent #antimicrobial peptide that stains both Gram- and Gram+ bacteria with high selectivity over eukaryotes. Stay tuned for part two with some fascinating applications!
#chembio pubs.acs.org/doi/abs/10.1...
Fluorescent Antimicrobial Peptides Based on Nile Red: Effect of Conjugation Site and Chemistry on Wash-Free Staining of Bacteria
Fluorescent probes for bacterial detection can be obtained by conjugating antimicrobial peptides with fluorescent dyes. However, little is known about the effect of the conjugation site and linker che...
pubs.acs.org
December 18, 2024 at 9:57 AM