Topical Formulations for The Decontamination of
il y a 1 mois
**Intitulé du poste**:
Topical formulations for the decontamination of injured skin exposed to radionuclides (PsD SAN24-04) H/F
**Type de contrat**:
Post-doctorat
**Statut**:
Cadre
**Disponibilité du poste**:
06/01/2025
**Localisation du poste**:
Fontenay-aux-Roses
**Environnement / Organisation / Contexte**:
The Institut Galien Paris-Saclay (IGPS) is a major international player in nanomedicine research. Its objective is to develop nanotechnologies to deliver drugs to target cell populations and modulate their effects or for in vitro and in vivo diagnosis.
The Laboratory of Radiochemistry and Imaging (LRSI) is part of of the Health Department of IRSN, which develops analytical methods in radiochemistry and conducts research on the speciation and biodistribution of radionuclides from the cellular to the organism level, and then develops medical countermeasures in case of skin or internal contaminations due to radionuclides.
In response to the call for proposals launched by the European Defence Fund, the RESILIENCE Framework Partnership was set up, aiming at building a European collaborative ecosystem against current or future CBRN threats (Chemical, Biological, Radiological, Nuclear). RESILIENCE brings together military medical institutes, research institutes, universities, research and technology organisations (RTOs), hospitals, industries, mid-caps and SMEs. One hundred European partners and their experts in NR (Nuclear, Radiological) threats, will serve different R&D projects, in dosimetry, diagnosis and medical countermeasure. Within this framework, IGPS and IRSN will contribute to the project INDECRAD by developping new decorporating and decontaminating agents to improve care of soldiers exposed to NR threats.
**Mission**:
**Subject : Topical formulations for the decontamination of injured skin and wounds exposed to radionuclides”**
Among the complementary approaches to improve radionuclide decontamination, we chose to evaluate the efficacy of topical formulations (i.e., hydrogels and texturing gels) containing chelating drugs such calixarene or hydroxypyridinone (HOPO) to treat injured skin or wounds contaminated with radionuclide such as U, transuranics, Cs or Co. Such pharmaceutical strategy proved to be effective in previous developments to decontaminate skin exposed ex vivo to uranium (Belhomme-Henry et al., 2014; Phan et al., 2013), transuranic elements (Tazrart et al., 2018) or nanomaterials (Tarantini et al., 2024)
This project is led by the University of Latvia and has six partners on board: IRSN, CNRS, CEA, the French Ministry of Defense, Bundeswehr Institute of Radiobiology (Germany) and University of Brno (Czech Republic).
**_ Mission_**
The position holder will contribute to the formulation and physicochemical characterisation of emulsions and hydrogels made of hydrophilic or amphiphilic chelating agents at IGPS, and to the assessment of their effectiveness in decontaminating damaged skin or wounds exposed ex vivo to actinides, cesium, or cobalt isotopes using automated Franz diffusion cells systems, at IRSN. This includes, but is not limited to:
- Characterizing the granulometry (in case of dispersed systems), the rheological properties and the stability of the pharmaceutical forms;
- Performing ex vivo skin diffusion studies of the radioisotopes (U, Pu, Am, Cs, Co) through murine, porcine or human skins using Franz cells with or without decontamination treatments;
- Analyzing the radionuclides in the different compartments and samples using analytical techniques (ICP-MS);
- Analyzing the results of experiments and writing articles for publication in peer-reviewed journals, as well as research reports for internal or external purpose;
- Preparing and presenting talks and poster presentations at internal and external seminars and meetings when requested and approved.
**Other information**
The position holder will be hired by IRSN and the research will be performed partly at IGPS in Orsay (91) and at IRSN in Fontenay-aux-Roses (92). Occasional trips in France and abroad are expected. The position is eligible for remote work.
**_
Contacts_**
**Profil recherché**:
The postdoctoral fellow shall have:
- PhD degree in physicochemistry, pharmaceutical technology, pharmacology, biology, chemistry or a relevant discipline from a recognized university
- Comprehensive background and experience in one or more of the following areas: colloids, (nano)emulsions, hydrogels or dispersed systems formulation and characterisation (rheology, microscopy) (Beladjine et al., 2023; Jaudoin et al., 2023)
- Experience in skin physiology, radiobiology, radiotoxicology, in vitro skin diffusion study, Franz diffusion cells systems or active ingredients analytical methods will be considered as an asset
- Demonstrated ability to publish research results as a lead author in peer-reviewed scientific literature
- Effective communication skills to present results of research as demonstrated by a record
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