{"id":12872,"date":"2025-03-26T17:26:26","date_gmt":"2025-03-26T16:26:26","guid":{"rendered":"https:\/\/u-paris.fr\/sante\/?p=12872"},"modified":"2025-04-08T14:44:01","modified_gmt":"2025-04-08T12:44:01","slug":"lindigo-de-la-teinture-a-la-photopharmacie","status":"publish","type":"post","link":"https:\/\/u-paris.fr\/sante\/lindigo-de-la-teinture-a-la-photopharmacie\/","title":{"rendered":"L\u2019indigo : de la teinture \u00e0 la photopharmacologie"},"content":{"rendered":"

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L\u2019indigo est un fameux colorant bleu, mais aussi une grande avanc\u00e9e th\u00e9rapeutique ! En effet, il permet de produire des mol\u00e9cules appel\u00e9es h\u00e9miindigo\u00efdes avec une propri\u00e9t\u00e9 remarquable : elles changent de forme sous l\u2019effet de la lumi\u00e8re. On les appelle des mol\u00e9cules photocommutables ou photoswitch en anglais. \u00c0 travers deux articles parus respectivement dans les journaux Chemistry \u2013 A European Journal<\/em> et ChemPhotoChem<\/em> en mars 2025 et en novembre 2024, l\u2019\u00e9quipe du Pr. Ludovic Jean (CITCOM, Universit\u00e9 Paris Cit\u00e9) explore les propri\u00e9t\u00e9s et applications de ces mol\u00e9cules.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

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L’indigo est \u00e0 l’origine des h\u00e9miindigo\u00efdes<\/p>\n

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\u00a9 Cottonbro Studio, Pexel<\/p>\n<\/div>\n<\/div>\n<\/div>\n

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Les h\u00e9miindigo\u00efdes\u00a0: une structure changeante<\/h2>\n

Les h\u00e9miindigo\u00efdes (HI) sont des mol\u00e9cules asym\u00e9triques d\u00e9riv\u00e9es de l\u2019indigo et poss\u00e9dant diff\u00e9rentes configurations g\u00e9om\u00e9triques appel\u00e9es isom\u00e8res. Ils peuvent passer de l\u2019une \u00e0 l\u2019autre sous l\u2019effet de certaines longueurs d\u2019ondes de la lumi\u00e8re.<\/p>\n

\"\"<\/p>\n

Sur la figure, on peut voir le changement de deux HI en fonction de la lumi\u00e8re violette (440 ou 450 nm) ou verte (505 ou 532nm). Ce changement de forme a des r\u00e9percussions sur les propri\u00e9t\u00e9s des mol\u00e9cules. Il en existe plusieurs et l\u2019\u00e9quipe du professeur Ludovic Jean en a d\u00e9couverts de nouveaux. De plus, leurs \u00e9tudes montrent qu\u2019il est possible d\u2019am\u00e9liorer l’absorption de lumi\u00e8re visible et la stabilit\u00e9 des HI, permettant ainsi plus d\u2019applications. \u00a0<\/p>\n

Quelles applications ?<\/h2>\n

Les applications des HI sont nombreuses et touchent diff\u00e9rents domaines, comme les sciences des mat\u00e9riaux (avec la cr\u00e9ation de mat\u00e9riaux r\u00e9agissant \u00e0 la lumi\u00e8re), le stockage d\u2019\u00e9nergie (avec des panneaux solaires, par exemple) ou la m\u00e9decine. Les \u00e9tudes de l\u2019\u00e9quipe du professeur Ludovic Jean explorent ces derni\u00e8res \u00e0 travers la photopharmacologie. En effet, certains HI ont un potentiel th\u00e9rapeutique et pourraient permettre de d\u00e9velopper des m\u00e9dicaments activables par la lumi\u00e8re dans certaines zones du corps seulement et pour une dur\u00e9e d\u00e9termin\u00e9e. Si aujourd\u2019hui les recherches sont toujours en cours, notamment sur la solubilit\u00e9 des mol\u00e9cules, cela permettrait d\u2019avoir des traitements cibl\u00e9s pour certaines maladies.<\/p>\n

Sources\u00a0:<\/strong><\/p>\n

Jean, L., Gernet, A., Balivet, L., Rhaz, A. E., Pag\u00e8s, L., Laurent, G., & Maurel, F. (2025). Synthesis and Evaluation of the Photochemical Properties of Heterocyclic Hemiindigos. Chemistry – A European Journal.<\/em> https:\/\/doi.org\/10.1002\/chem.202500803<\/a><\/p>\n

Gernet, A., Toursel, L., Balivet, L., Pag\u00e8s, L., & Jean, L. (2024). Hemiindigoids as prominent photoswitch scaffolds. ChemPhotoChem.<\/em> https:\/\/doi.org\/10.1002\/cptc.202400261<\/a><\/p>\n<\/div>\n<\/div>\n<\/div>\n

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\u00c0<\/span> lire aussi<\/h2>\n

[\/et_pb_text][et_pb_blog _builder_version=\u00a0\u00bb3.21″ posts_number=\u00a0\u00bb4″ include_categories=\u00a0\u00bb13″ show_author=\u00a0\u00bboff\u00a0\u00bb show_date=\u00a0\u00bboff\u00a0\u00bb show_pagination=\u00a0\u00bboff\u00a0\u00bb border_width_bottom_fullwidth=\u00a0\u00bb1px\u00a0\u00bb border_color_bottom_fullwidth=\u00a0\u00bbrgba(51,51,51,0.18)\u00a0\u00bb custom_padding=\u00a0\u00bb||50px|\u00a0\u00bb module_id=\u00a0\u00bbpage_type_blog\u00a0\u00bb header_level=\u00a0\u00bbh4″ \/][\/et_pb_column][\/et_pb_row][\/et_pb_section]<\/p>\n","protected":false},"excerpt":{"rendered":"

\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t<\/div> L\u2019indigo est un fameux colorant bleu, mais aussi une grande avanc\u00e9e th\u00e9rapeutique ! En effet, il permet de produire des mol\u00e9cules appel\u00e9es h\u00e9miindigo\u00efdes avec une propri\u00e9t\u00e9 remarquable : elles changent de forme sous l\u2019effet de la lumi\u00e8re. On les appelle des mol\u00e9cules photocommutables ou photoswitch en anglais. \u00c0 travers deux articles parus respectivement dans… Lire la suite L\u2019indigo : de la teinture \u00e0 la photopharmacologie<\/span><\/a><\/p>\n","protected":false},"author":605,"featured_media":12889,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[1,17],"tags":[],"coauthors":[56],"class_list":["post-12872","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-faculte-de-sante","category-recherche"],"_links":{"self":[{"href":"https:\/\/u-paris.fr\/sante\/wp-json\/wp\/v2\/posts\/12872","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/u-paris.fr\/sante\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/u-paris.fr\/sante\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/u-paris.fr\/sante\/wp-json\/wp\/v2\/users\/605"}],"replies":[{"embeddable":true,"href":"https:\/\/u-paris.fr\/sante\/wp-json\/wp\/v2\/comments?post=12872"}],"version-history":[{"count":12,"href":"https:\/\/u-paris.fr\/sante\/wp-json\/wp\/v2\/posts\/12872\/revisions"}],"predecessor-version":[{"id":12989,"href":"https:\/\/u-paris.fr\/sante\/wp-json\/wp\/v2\/posts\/12872\/revisions\/12989"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/u-paris.fr\/sante\/wp-json\/wp\/v2\/media\/12889"}],"wp:attachment":[{"href":"https:\/\/u-paris.fr\/sante\/wp-json\/wp\/v2\/media?parent=12872"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/u-paris.fr\/sante\/wp-json\/wp\/v2\/categories?post=12872"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/u-paris.fr\/sante\/wp-json\/wp\/v2\/tags?post=12872"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/u-paris.fr\/sante\/wp-json\/wp\/v2\/coauthors?post=12872"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}