EMBO/SourceData huggingface dataset:
Figure 5A-B. Co-IP assays of ectopically expressed FLAG-GASZ and MFN-HA in 293T cells (A)A-B. Co-IP assays of endogenous proteins of GASZ and MFNs from adult testes (B).C. Co-IP assays of HA-tagged MFN1 with various FLAG-tagged wild-type GASZ, its domain deletion mutants, or GASZ with MLS mutations in 293T cells.D. Averaged percentage of MEFs with different types of mitochondria were determined according to the mitochondrial morphology by MitoTracker (Red) staining in wild-type MEFs, or MEFs containing MFN null mutations transfected with empty vector control (Ctrl) or a GASZ expressing plasmid.E. PEG fusion assays of Su9-GFP and COX4-DsRed labeled wild-type MEFs, or MEFs containing MFN null mutations transfected with empty vector control (Ctrl) or a GASZ expressing plasmid. Bar graph represents averaged percentage of areas with different levels of mitochondrial fusion.
Figure 6A. Gross morphology of testes from MFN1f/f-Cre compared to their wild-type littermates.B. Histological studies of testis sections from wild-type mice or MFN1f/f-Cre littermates at different time points postnatal. Red stars: tubules with spermatocytes.C. IHF of PLZF (day 14 postnatal), MILI, MVH, and GASZ/CytC (day 7) of testes sections. Scale bars for PLZF are 50 m and 10 m for others.D. EM of testical sections from wild-type neonatal mice or MFN1f/f-Cre littermates. N: nucleus.E. Histochemistry of respiratory enzymes, COX, NADH, and SDH on testical sections from mice 10 days postnatal. Scale bar: 100 m.
Figure 1A. Tryptophan-fluorescence time course associated to Na+ (blue) and K+ (black) binding, respectively, to detergent-purified apo EAAT1CRYST at pH 7.4. Horizontal and vertical scale bars represent time and ∆F/F0, respectively. B. Tryptophan-fluorescence time course associated to L-asp binding in presence of 1 mM (blue) and absence (black) of Na+, respectively, at pH 9. CC. Na+ binding isotherms of EAAT1CRYST at pH 7.4 in the presence (pink) and absence (blue) of UPCH101. Mutation D400380N at Na3 strongly impairs Na+ binding (green). Solid lines represent fits of Hill equation.
Figure 3A. Na+-induced L-glutamate uptake by purified EAAT1CRYST reconstituted in liposomes loaded with K+. Choline (Ch+) condition was subtracted to the Na+ condition.B. Log-log plots of Na+ (red, n=19) and L-asp (blue, n=27) KD, as a function of pH at [Na+]=0.5 mM. Na+ (n=10) and L-asp (n=7) titration data at pH 7.4 and 9.0, respectively, are also reported in Fig. 1. Solid lines are fits of straight lines.C. Log-log plots of L-asp KD for EAAT1CRYST-E406386Q (light blue, n=24) and EAAT1CRYST-Y405385F (dark blue, n=18), as a function of pH at [Na+]=0.5 mM..
Figure 4A. Purified EAAT1CRYST takes up L-glutamate in liposomes loaded with K+ or Rb+, but not with choline (Ch+), or with Ch+ and Ca2+. Plots depict data as in Fig. 3A.
Figure 5B. Ca2+ binding isotherms of EAAT1CRYST at pH=7.4 in the presence (pink) and absence (blue) of UPCH101. Mutation D400380N at Na3 strongly impairs Ca2+ binding (green). Symbols represent average and s.e.m. values of at least three independent experiments. Solid lines represent fits of Hill equation and dashed line is the fit in Fig. 1C (blue line) corresponding to Na+ binding.C. Log-log plot of L-asp KD as a function of Ca2+ (n=13).
Figure 1. C-J Bar Chart with data points showing the abundance of indicated bacterial families in the indicated group of mice. Data are expressed as CSS-normalized bacterial counts
Figure 2A-C Bar chart with individual points showing the levels of propionate acetate and butyrate in wt and mdx mice receiving DFZ or vehicle, measured by NMR or GC-MS. Data are expressed as μg/ml or bin intensity (arbitrary unit - a.u.) D-F Bar chart with individual points showing the levels of pyruvate, succinate and lactate in wt and mdx mice receiving vehicle or DFZ, measured by NMR. G
Figure 3A-B Muscle coordination and strength were measured in 19 weeks old control and mdx mice treated with vehicle (DMSO), NaB (100 mg kg−1/daily) or DFZ (1.2 mg kg−1/daily) for 3 weeks using the rotarod and weight test. Bar charts show the latency to fall or drop the weight of wt and dystrophic mice.
Figure 4A-I Bar chart with individual points showing the mRNA expression levels of the indicated genes measured in the gastrocnemius of control and mdx mice treated with or without NaB and DFZ.J-K Representative blotting and bar chart with individual points showing the expression and/or phosphorylation of pAKT/AKT and COX2 in the gastrocnemius of the indicated six groups of mice.
Figure 5A-B Levels of AEA and 2-AG in plasma samples of wt and mdx mice expressed as pmol mg−1 of wet tissue weight.C-D Bar charts with individual points showing the mRNA expression levels of CB1 and CB2 measured in the gastrocnemius of the indicated groups of mice.E Representative blots showing the expression levels of CB1 and CB2 proteins in the gastrocnemius of the indicated groups of mice. F Quantification of CB1 and CB2 proteins to the housekeeping protein GAPDH. D
Figure 6A-C Bar charts with individual points showing the mRNA expression levels of Ulk, Pink and Becn1 measured in control and mdx mice treated with rimonabant (0.5 mg kg-1).D Representative blots showing the expression levels of LC3I and LC3II proteins in the gastrocnemius of the indicated groups of mice. E, F Quantification of LC3I and LC3II proteins to the housekeeping protein GAPDH. D
Figure 7A-B Bar chart with individual points showing the mRNA expression levels of Il6 and Cox2 in control (vehicle, DMSO) and/or GPR109A-silenced C2C12 myoblasts exposed to LPS (1 μg/ml) in the presence or absence of either MK1903 (1 μM), rosiglitazone (1 μM) or T007 (1 μM).
Figure 8A-F Bar chart with individual points showing the mRNA expression levels of Cb1, Daglα, Daglβ, Magl, Napepld, and Faah in control (vehicle, DMSO) and/or GPR109A-silenced C2C12 myoblasts exposed to LPS (1 μg/ml) in the presence or absence of either MK1903 (1 μM), rosiglitazone (1 μM) or T007 (1 μM).G-H Levels of AEA and 2-AG were measured in C2C12 cells exposed to LPS (1 μg/ml) or NaB (3 mM) for 24 h. I Effect of ACEA (1 μM) and rimonabant (1 μM) on autophagosome formation measured in C2C12 cells. D
Figure 9C-J Bar chart with individual points showing the expression of selected miRNAs in control and Gpr109A-silenced C2C12 myoblasts exposed to LPS (1 μg/ml) in the presence or absence of either NaB (3 mM), MK1903 (1 μM), rosiglitazone (1 μM). NaB was also tested in the presence or absence of either rosiglitazone (1 μM) or T007 (1 μM).
Figure 10A-E Bar chart showing the mRNA expression levels of IL6, COX2, ULK 1, ATG13 and ATG4 mRNA in primary human myoblasts isolated from one healthy donor (HD) and five DMD donors (D1- D5).
Figure 1(A-B) Hemoglobin (A) and hematocrit (B) levels of healthy subjects and cachectic cancer patients presenting a body weight loss superior to 10% of initial body weight (19 healthy subjects, 17 cachectic patients). Data information: For all data, n represents the number of biological replicates. Statistical significance was calculated by unpaired, two-tailed Student's T-test. Data are mean ± SEM. ∗p < 0.05, ∗∗p < 0.01, ∗∗∗p < 0.001.(C) TFR1 mRNA levels in muscle biopsies from cancer-patients of late stage cachexia (19 healthy subjects, 17 cachectic patients with at least 10% total body weight loss) Data information: For all data, n represents the number of biological replicates. Statistical significance was calculated by unpaired, two-tailed Student's T-test. Data are mean ± SEM. ∗p < 0.05, ∗∗p < 0.01, ∗∗∗p < 0.001.(F) TFR1 mRNA levels in the gastrocnemius of mice subjected to iron deprivation by feeding with an iron deficient diet (IDD) combined to a phlebotomy (PHL) (n=5-6) Data information: For all data, n represents the number of biological replicates. Statistical significance was calculated by unpaired, two-tailed Student's T-test. Data are mean ± SEM. ∗p < 0.05, ∗∗p < 0.01, ∗∗∗p < 0.001.(G) Cross-sectional area of skeletal muscle fiber transfected with shSCR (scramble) and shTFR1 (n=3-4) and representative picture of a shTFR1 transfected fiber. Scale bar=50µm. (H) Cross-sectional area of skeletal muscle fibers transfected with TFR-pHuji (n=4) and representative picture of a TFR-pHuji transfected fiber. Scale bar=50µm. Data information: For all data, n represents the number of biological replicates. Statistical significance was calculated by unpaired, two-tailed Student's T-test. Data are mean ± SEM. ∗p < 0.05, ∗∗p < 0.01, ∗∗∗p < 0.001.(L) Reprensentative pictures and diameter measurements of human myoblast-derived myotubes after 48h treatment with DFO 100µM (n=3). Scale bar=50µm. Data information: For all data, n represents the number of biological replicates. Statistical significance was calculated by unpaired, two-tailed Student's T-test. Data are mean ± SEM. ∗p < 0.05, ∗∗p < 0.01, ∗∗∗p < 0.001.
Figure 2(C) TFR1 protein expression and densitometric quantification in mouse gastrocnemius (n=5). Data information: For all data, n represents the number of biological replicates. Statistical significance was calculated by unpaired, two-tailed Student's T-test. Data are mean ± SEM. ∗p < 0.05, ∗∗p < 0.01, ∗∗∗p < 0.001.(E) Representative Western blot of IRP2 in mouse gastrocnemius and densitometric quantification (n=5). Data information: For all data, n represents the number of biological replicates. Statistical significance was calculated by unpaired, two-tailed Student's T-test. Data are mean ± SEM. ∗p < 0.05, ∗∗p < 0.01, ∗∗∗p < 0.001.(H) Representative Western blot of ferritin Heavy and Light chains in mouse gastrocnemius and densitometric quantification (n=4). Data information: For all data, n represents the number of biological replicates. Statistical significance was calculated by unpaired, two-tailed Student's T-test. Data are mean ± SEM. ∗p < 0.05, ∗∗p < 0.01, ∗∗∗p < 0.001.(I-J) ICP-MS quantification of total (I) and protein-bound (J) iron in mouse quadriceps (n=4-5). Data information: For all data, n represents the number of biological replicates. Statistical significance was calculated by unpaired, two-tailed Student's T-test. Data are mean ± SEM. ∗p < 0.05, ∗∗p < 0.01, ∗∗∗p < 0.001.
Figure 3(A) ICP-MS quantification of mitochondrial iron in mouse quadriceps (n=6-8). (B) Gastrocnemius heme content quantified by fluorescent heme assay (n=4-6). Data information: For all data, n represents the number of biological replicates. Statistical significance was calculated by unpaired, two-tailed Student's T-test. Data are mean ± SEM. ∗p < 0.05, ∗∗p < 0.01, ∗∗∗p < 0.001.(C-D) mRNA levels of mitochondrial iron importer MFRN2 (C) and the rate limiting enzyme of heme synthesis ALAS2 (D) normalized to 18s in mouse gastrocnemius (n=4-5). Data information: For all data, n represents the number of biological replicates. Statistical significance was calculated by unpaired, two-tailed Student's T-test. Data are mean ± SEM. ∗p < 0.05, ∗∗p < 0.01, ∗∗∗p < 0.001.(F) Succinate Dehydrogenase activity staining in transversal sections of mouse gastrocnemius and corresponding intensity quantification (n=3-4). Scale bar= 50µm. Data information: For all data, n represents the number of biological replicates. Statistical significance was calculated by unpaired, two-tailed Student's T-test. Data are mean ± SEM. ∗p < 0.05, ∗∗p < 0.01, ∗∗∗p < 0.001.
Figure 4(B) Western blot of mitochondrial OXPHOS respiratory complexes in C2C12 myotubes treated for 48H with C26CM and ferric citrate. (n=3)(G-H) Representative microscopic pictures and diameter of C2C12 myotubes stained for myosin heavy chain (G) or human myoblast-derived myotubes (H)after 48h treatment with C26 CM and ferric citrate (n=3 per condition). Scale bars =50 and 100 µm, respectively. Data information: For all data, n represents the number of biological replicates. Statistical significance was calculated by one-way Anova with Bonferroni's correction Data are mean ± SEM. ∗∗p < 0.01, ∗∗∗p < 0.001 compared to control and ##p < 0.01, ###p < 0.001 compared to C26 CM-treated group.
Figure 5(B) Kaplan-Meier depicting the survival of C26-tumor bearing mice after I.V. injection of saline or iron every 5 days post C26-injection (3-month-old Balb/C, n=8-11). Data information: For all data, n represents the number of biological replicates. Statistical significance was calculated by chi-square test for the survival curves Data are mean ± SEM. ∗p < 0.05 and ∗∗∗p < 0.001 compared to control and #p < 0.05, ##p < 0.01, ###p < 0.001 compared to C26 untreated group.Immunofluorescent staining of myosin heavy chain fast (green) and slow (red) of transversal sections of gastrocnemius (midbelly) with corresponding frequency distribution Scale bar=100µm. Data information: For all data, n represents the number of biological replicates. Statistical significance was calculated by one-way Anova with Bonferroni's correction Data are mean ± SEM. ∗p < 0.05 and ∗∗∗p < 0.001 compared to control and #p < 0.05, ##p < 0.01, ###p < 0.001 compared to C26 untreated group.(I-K) mRNA levels of Murf 1 (I), Atrogin 1 (J), and REDD1 (K) normalized to GAPDH in gastrocnemius (n=5-14). Data information: For all data, n represents the number of biological replicates. Statistical significance was calculated by one-way Anova with Bonferroni's correction, Data are mean ± SEM. ∗p < 0.05 and ∗∗∗p < 0.001 compared to control and #p < 0.05, ##p < 0.01, ###p < 0.001 compared to C26 untreated group.
Figure 6(B) Aconitase activity of quadriceps lysates normalized to protein content (n=3-7). Data information: For all data, n represents the number of biological replicates. Statistical significance was calculated by unpaired, two-tailed Student's T-test. Data are mean ± SEM. ∗p < 0.05, ∗∗p < 0.01, ∗∗∗p < 0.001 compared to control and #p < 0.05, ##p < 0.01, ###p < 0.001 compared to C26 untreated group.(E) Representative Western blot and densitometric quantification of phospho-AMPK and total AMPK (stripped and re-blotted) in the gastrocnemius of C26-tumor bearing mice after iron carboxymaltose supplementation (n=6). Data information: For all data, n represents the number of biological replicates. Statistical significance was calculated by unpaired, two-tailed Student's T-test. Data are mean ± SEM. ∗p < 0.05, ∗∗p < 0.01, ∗∗∗p < 0.001 compared to control and #p < 0.05, ##p < 0.01, ###p < 0.001 compared to C26 untreated group.(F-H) mRNA levels of ACOT 1 (F), MCD (G), and CPT1B (H) normalized to GAPDH in gastrocnemius (n=5-10). Data information: For all data, n represents the number of biological replicates. Statistical significance was calculated by unpaired, two-tailed Student's T-test. Data are mean ± SEM. ∗p < 0.05, ∗∗p < 0.01, ∗∗∗p < 0.001 compared to control and #p < 0.05, ##p < 0.01, ###p < 0.001 compared to C26 untreated group.
Figure 7(A-B) Grip force of dominant or non-dominant arm in iron-deficient cancer patients, expressed in percentage of baseline force (A) and absolute values normalized to height (B) before/after single dose of iron carboxymaltose (15mg/kg, 7 subjects). Data information: For all data, n represents In graph (A), the boxes represent the range of values with the median value being the central band and whiskers the SEM.
Figure 1Overall structure of the RBD-ACE2-B0AT1 complex.(A) Cryo-EM map of the RBD-ACE2-B0AT1 complex. Left: Overall reconstruction of the ternary complex at 2.9 Å. Inset: focused refined map of RBD.Overall structure of the RBD-ACE2-B0AT1 complex. The complex is colored by subunits, with the protease domain (PD) and the Collectrin-like domain (CLD) colored cyan and blue in one of the ACE2 protomers, respectively. The glycosylation moieties are shown as sticks.
Figure 2 Cryo-EM density of the interface between RBD and ACE2.The density, shown as pink meshes, is contoured at 12 σ.
Figure 1A, Misreading (A) were measured by dual luciferase gain-of-function assays using wild-type mitohybrid ribosomes (n=8 misreading, mutant A1555G mitohybrid ribosomes (n=8 misreading, E. coli wild-type ribosomes (n=9), E.coli mutant A127Y ribosomes (n=9), M. smegmatis merodiploid wild-type ribosomes (n=9), and M. smegmatis merodiploid mutant S152Y ribosomes (n=9). Mistranslation was determined by assessing the misreading at His245 (CAC codon) of the F-luc gene that was replaced by the near-cognate codon CGC or the non-cognate codon AGA, both encoding for Arg. Results are derived by calculating mutant hFluc/hRluc activity related to wild-type hFluc/hRluc activity.read-through (B) were measured by dual luciferase gain-of-function assays using wild-type mitohybrid ribosomes n=4 read-through), mutant A1555G mitohybrid ribosomes n=4 read-through), E. coli wild-type ribosomes (n=9), E.coli mutant A127Y ribosomes (n=9), M. smegmatis merodiploid wild-type ribosomes (n=9), and M. smegmatis merodiploid mutant S152Y ribosomes (n=9). To determine read-through the Asp357 (GAC codon) of the F-luc gene was replaced by the nonsense TGA stop codon. Results are derived by calculating mutant hFluc/hRluc activity related to wild-type hFluc/hRluc activity.C Ratio of 35S-Cysteine and 35S-Methionine incorporation by in-vitro translation using wild-type mitohybrid ribosomes, mutant A1555G mitohybrid ribosomes, and MT-CO1 mRNA. Following immunoprecipitation, the MT-CO1 band was quantified by autoradiography, wild-type mitohybrid ribosomes were set as 1 (n=3), error bars indicate SEM; ****p<0.001 (Student's t-test).D Ratio of 35S-Cysteine and 35S-Methionine incorporation by in-vitro translation in the presence of tobramycin using wild-type mitohybrid ribosomes, mutant A1555G mitohybrid ribosomes, and MT-CO1 mRNA; the MT-CO1 band was quantified by autoradiography.E Misreading of wild-type mitohybrid ribosomes and mutant A1555G mitohybrid ribosomes in the presence of tobramycin. Misreading was assessed by dual luciferase assay, and results derived by calculating mutant hFluc/hRluc activity related to wild-type hFluc/hRluc activity.F In-vitro translation of MT-CO1-TGA mRNA and MT-CO1-AGA mRNA using mutant A1555G mitohybrid ribosomes in the presence of tobramycin (0 - 20 µM). Autoradiography of immunoprecipitated MT-CO1 proteins; top: 35S-Met labelling, bottom: 14C-Lys labelling. In-organello translated 35S-Met labelled MT-CO1 was used as a marker. * MT-CO1, ** MT-CO1 extended by read-through, MT-CO1 AGA-polyA and MT-CO1 TGA-polyA constructs used for in-vitro translation are schematized.G Ratio of 14C-Lys and 35S-Met labelled immunoprecipitated MT-CO1 proteins. In-vitro translation using MT-CO1-TGA mRNA, MT-CO1-AGA mRNA, and mutant A1555G mitohybrid ribosomes in the presence of tobramycin (0 - 20 µM). The corresponding MT-CO1 band was quantified by autoradiography.
Figure 2A Autoradiography of in-organello mitochondrial translation products derived from HEK293 wild-type cells in the presence of tobramycin, incorporation of 35S-Met and 35S-Cys in MT-CO1 protein. Following in-organello translation proteins were immunoprecipitated and analyzed by autoradiography. Lane 1, 3: controls; lanes 2, 4: in-organello translation in the presence of 1000 µM tobramycin. MT-CO1 bands were quantified and ratio of 35S-Cys / 35S-Met calculated, the 35S-Cys / 35S-Met ratio in the absence of tobramycin was set as 1 (n=3), error bars indicate SEM.B Ratios of 35S-Cys / 35S-Met labelled MT-CO1 and MT-CO2 proteins synthesized in in-organello translation and effect of tobramycin. Following in-organello translation in the presence of tobramycin (1000 µM, 2000 µM) proteins were immunoprecipitated and analyzed by autoradiography. MT-CO1 and MT-CO2 bands were quantified and ratio of 35S-Cys / 35S-Met incorporation calculated (n=3), error bars indicate SEM; *p<0.05, ns, not significant (Student's t-test).Ratio of 35S-Cys and 35S-Met labelled MT-CO1 protein synthesized in in-organello translation using mitochondria from HEK293 MRPS5 wild-type cells and HEK MRPS5 mutant V336Y cells. Following in-organello translation, proteins were immunoprecipitated and analyzed by autoradiography. MT-CO1 bands quantified and ratios calculated. The ratio of the MRPS5 wild-type was set as 1 (n=8 clones), error bars indicate SD; ***p<0.0001 (Student's t-test).D Autoradiography of in-organello mitochondrial translation products derived from HEK293 MRPS5 wild-type cells in the presence of tobramycin (0-750 µM). Proteins were 35S-Met labeled and loaded either directly on SDS-PAGE (total, top) or following poly-lysine immunoprecipitation (bottom). * MT-CO1 and ** MT-CO1 with poly-lysine extension.E Quantification of MT-CO1 proteins in HEK293 MRPS5 wild-type cells and HEK293 MRPS5 mutant V336Y cells. In-organello mitochondrial translation in the presence of 35S-Met and 750 µM tobramycin. Proteins were loaded either directly on SDS-PAGE (total) or following poly-lysine immunoprecipitation and analyzed by autoradiography. For total protein samples the MT-CO1 band was quantified, for poly-lysine immunoprecipitated samples the extended MT-CO1 band was quantified and the ratio of extended MT-CO1/total MT-CO1 calculated. The ratio of MRPS5 wild-type was set as 1 (MRPS5 wild-type, n=5 clones, MRPS5 V336Y, n=7 clones), error bars indicate SD; ***p<0.0001 (Student's t-test).
Figure 3A Generation time (n=8 clones, ± SD).B Whole cell in-vivo mitochondrial translation as determined by 35S-Met incorporation (n=4 clones, ± SEM).C Autoradiography of in-organello translation using 35S-Met labelling.
Figure 4Oxygen consumption rate (OCR) was measured in freshly isolated mitochondria from wild-type and mutant mouse cortex. A OCR in brain mitochondria from 19-months mutant mice (black circle) compared with OCR from wild-type mice (white circle). The sequential injection of mitochondrial substrates and inhibitors is indicated by dotted lines Values corresponding to the different respiratory states are shown.Oxygen consumption rate (OCR) was measured in freshly isolated mitochondria from wild-type and mutant mouse cortex. Baseline OCR, effect of age (p<0.0001) and genotype (p<0.05).Oxygen consumption rate (OCR) was measured in freshly isolated mitochondria from wild-type and mutant mouse cortex. C State 3 OCR (after addition of ADP), effect of age (p<0.001) and genotype (p<0.0001).Oxygen consumption rate (OCR) was measured in freshly isolated mitochondria from wild-type and mutant mouse cortex. D State 3 uncoupled OCR (state 3u after addition of FCCP), effect of genotype (p<0.0001) and age-genotype interaction (p<0.0001).E Ratio of mitochondrial complex IV and complex II activities.F ATP levels.G Superoxide anion radicals.