Supplementary Figures S1-S22 from C/EBPα Confers Dependence to Fatty Acid Anabolic Pathways and Vulnerability to Lipid Oxidative Stress–Induced Ferroptosis in <i>FLT3</i>-Mutant Leukemia
journal contribution
posted on 2023-07-03, 14:00 authored by Marie Sabatier, Rudy Birsen, Laura Lauture, Sarah Mouche, Paolo Angelino, Jonas Dehairs, Léa Goupille, Ismael Boussaid, Maël Heiblig, Emeline Boet, Ambrine Sahal, Estelle Saland, Juliana C. Santos, Marc Armengol, Miranda Fernández-Serrano, Thomas Farge, Guillaume Cognet, Federico Simonetta, Corentin Pignon, Antoine Graffeuil, Céline Mazzotti, Hervé Avet-Loiseau, Océane Delos, Justine Bertrand-Michel, Amélie Chedru, Vilma Dembitz, Paolo Gallipoli, Natasha S. Anstee, Sun Loo, Andrew H. Wei, Martin Carroll, Armelle Goubard, Rémy Castellano, Yves Collette, François Vergez, Véronique Mansat-De Mas, Sarah Bertoli, Suzanne Tavitian, Muriel Picard, Christian Récher, Nathalie Bourges-Abella, Fanny Granat, Olivier Kosmider, Pierre Sujobert, Benoit Colsch, Carine Joffre, Lucille Stuani, Johannes V. Swinnen, Hervé Guillou, Gael Roué, Nawad Hakim, Anne S. Dejean, Petros Tsantoulis, Clément Larrue, Didier Bouscary, Jerome Tamburini, Jean-Emmanuel Sarry<p>Supplemental figures S1-S22: Supplementary Figure S1 shows lipid metabolism dependency in FLT3-mutant AML, Supplementary Figure S2 shows anti-leukemic activity of GILT across a panel of AML PDX, Supplementary Figure S3 shows mechanisms of post-translational regulation of C/EBPα expression, Supplementary Figure S4 shows inhibition of C/EBPα phosphorylation and protein expression by FLT3i, Supplementary Figure S5 shows the implication of Ser-21 phosphorylation in post-translational regulation of C/EBPα expression, Supplementary Figure S6 shows that FLT3-ITD regulates the expression of C/EBPα and of proteins related to lipid biosynthesis in AML cell lines, Supplementary Figure S7 shows that FLT3-ITD regulates the expression of genes related to lipid biosynthesis in AML cell lines, Supplementary Figure S8 shows that C/EBPα directly regulates the transcription of lipid biosynthesis genes in AML, Supplementary Figure S9 shows the correlation between CEBPA mRNA expression and FLT3-ITD mutations, Supplementary Figure S10 shows scRNA-seq analysis from PDXTUH84, Supplementary Figure S11 shows scRNA-seq analysis from PDXTUH110, Supplementary Figure S12 shows the evolution of CEBPA_UP and FLT3-ITD_UP signatures in patients with AML treated with GILT, Supplementary Figure S13 shows that C/EBPα regulates rate-limiting lipid biosynthetic enzymes downstream of FLT3-ITD, Supplementary Figure S14 shows that C/EBPα controls lipid amount in FLT3-ITD cell lines, Supplementary Figure S15 shows that FLT3 inhibitors induce a lipid switch increasing neutral lipids dependent on C/EBPα, Supplementary Figure S16 shows that FLT3 inhibitor inhibits fatty acid synthesis fueled by glucose and glutamine, Supplementary Figure S17 shows that FLT3 inhibition decreases monounsaturated fatty acid dependent on C/EBPα, Supplementary Figure S18 shows that FLT3 inhibition increases PUFA/MUFA ratio dependent on C/EBPα, Supplementary Figure S19 shows that ferroptotic cell death induced by FLT3i is mediated by inhibition of SCD-dependent mono-unsaturated FA synthesis, Supplementary Figure S20 shows that FLT3 inhibitors unmask a vulnerability of FLT3-mutant leukemic cells to ferroptosis, Supplementary Figure S21 shows that lipid redox stress induction by GPX4 inhibition primed FLT3i activity in FLT3-ITD AML cells and Supplementary Figure S22 shows combined treatment with GILT and APR-246 in preclinical AML models in vivo.</p>
