Build-To-Specification Vanillin and Phloroglucinol Derived Biobased Epoxy-Amine Vitrimers

Epoxy resins are widely used in the composite industry due to their dimensional stability, chemical resistance, and thermo-mechanical properties. However, these thermoset resins have important drawbacks. (i) The vast majority of epoxy matrices are based on non-renewable fossil-derived materials, and (ii) the highly cross-linked molecular architecture hinders their reprocessing, repairing, and recycling. In this paper, those two aspects are addressed by combining novel biobased epoxy monomers derived from renewable resources and dynamic crosslinks. Vanillin (lignin) and phloroglucinol (sugar bioconversion) precursors have been used to develop bi- and tri-functional epoxy monomers, diglycidyl ether of vanillyl alcohol (DGEVA) and phloroglucinol triepoxy (PHTE) respectively. Additionally, reversible covalent bonds have been incorporated in the network by using an aromatic disulfide-based diamine hardener. Four epoxy matrices with di erent ratios of epoxy monomers (DGEVA/PHTE wt%: 100/0, 60/40, 40/60, and 0/100) were developed and fully characterized in terms of thermal and mechanical properties. We demonstrate that their performances are comparable to those of commonly used fossil fuel-based epoxy thermosets with additional advanced reprocessing functionalities.This project has received funding from the Bio Based Industries Joint Undertaking under the European Union’s Horizon 2020 research and innovation program under grant agreement No 74431

Anti-tumor Activity of Novel Compounds Targeting BCR-ABL, c-SRC and BCR-ABLT315I in Chronic Myelogenous Leukemia

Chronic myelogenous leukemia (CML) is a hematological stem-cell disorder characterized by the expression of the BCR-ABL fusion protein, a constitutively active tyrosine kinase that causes pathogenesis. The development of tyrosine kinase inhibitors (TKIs) targeting the BCR-ABL oncogene has proven an effective approach to treat CML, but a non-negligible proportion of patients develop a resistance to this class of drugs. Of note, the T315I mutant of BCR-ABL is resistant to all known TKIs, with the noticeable exception of ponatinib. To address this unmet medical need, a new series of compounds was designed and tested for anti-tumor effects against BCR-ABLT315I CML. The effects of three OriBase Pharma compounds (OR1001, OR1002 and OR1003) on the kinase activity of wild-type and mutant BCR-ABL proteins, on cell proliferation and on the growth of subcutaneous xenografts of CML cells in athymic mice were investigated. In vitro, the three compounds were potent inhibitors of both ABL and c-SRC kinases and of the main mutants of ABL, including T315I. The three compounds inhibited the proliferation of cell lines expressing the wild-type and several mutated forms of BCR-ABL, including T315I. Finally, in a mouse xenograft model, OR1001, was found to significantly reduce tumor growth. These data support the potential of OR1001 as an effective therapy for the treatment of de novo and TKI-resistant patients

Archives de la Grande Guerre

Alors que le centenaire du début de la première guerre mondiale est devenu un véritable phénomène éditorial, les documents historiques et les fonds d'archives relatifs à cette période restent les parents pauvres de cette commémoration. La Grande Guerre et ses conséquences ont pourtant entraîné la production d'une énorme masse de documents, inédite par son ampleur, sa richesse et son caractère novateur. En partenariat avec les ministères de la Défense et des Affaires étrangères, le Service interministériel des Archives de France (ministère de la Culture et de la Communication) a réuni 80 contributeurs, tant universitaires qu'archivistes, pour réaliser ce manuel de recherche sur la première guerre mondiale. Cet ouvrage présente, en 49 contributions thématiques, les acquis de l'historiographie, les perspectives actuelles de la recherche et les sources archivistiques. Il est destiné aussi bien aux chercheurs et érudits qu'aux généalogistes et amateurs désireux de mieux connaître ce moment fondateur du XXe siècle : chacun, qu'il recherche une information ponctuelle, qu'il désire découvrir un sujet neuf pour lui, ou qu'il souhaite disposer d'un état des sources à consulter, pourra recourir à ce livre et y trouver la réponse à ses interrogations