Journal: Cells

Article Title: The Activation of the Fibrodysplasia Ossificans Progressiva-Inducing ALK2-R206H Mutant Depends on the Distinct Homo-Oligomerization Patterns of ACVR2B and ACVR2A

doi: 10.3390/cells13030221

Figure Lengend Snippet: ALK2-R206H-mediated pSMAD1/5/8 formation is induced by ACVR2B more efficiently than by ACVR2A. U2OS cells were transfected with vectors encoding HA-ALK2-R206H (or HA-ALK2-WT) alone or with myc-tagged ACVR2A, ACVR2B, or ACVR2B-KD. After 24 h, cells were starved (2 h, 1% serum) and stimulated (or not; control) with ActA (4 nM, 60 min, 37 °C). Cells were lysed, subjected to SDS--PAGE, and immunoblotted for pSMAD1/5/8, tSMAD1/5/8, and β-actin. As shown in , the cell-surface levels of the tagged receptors were similar and were not affected by the co-expressed receptors. ( A , B ) Representative blots of ActA signaling to pSMAD1/5/8. ( C , D ) Quantification of ActA-mediated pSMAD1/5/8 formation. The bands were visualized by ECL and quantified by densitometry. Data are mean ± SEM of the pSMAD1/5/8 over tSMAD1/5/8 ratio of 5 ( C ) or 4 ( D ) independent experiments. The value obtained for ActA-stimulated cells co-transfected with HA-ALK2-R206H and myc-ACVR2B was taken as 1. Asterisks show significant differences between the pairs indicated by brackets, using one-way ANOVA and Bonferroni post hoc test (*, p < 0.02; **, p < 4 × 10 −3 ; ***, p < 8 × 10 −4 ; n.s. = not significant).

Article Snippet: The U2OS human cell line was authenticated by STR analysis at Microsynth AG (Balgach, Switzerland).

Techniques: Transfection, Control, SDS Page

Journal: Cells

Article Title: The Activation of the Fibrodysplasia Ossificans Progressiva-Inducing ALK2-R206H Mutant Depends on the Distinct Homo-Oligomerization Patterns of ACVR2B and ACVR2A

doi: 10.3390/cells13030221

Figure Lengend Snippet: ACVR2B is superior to ACVR2A in eliciting ALK2-R206H-mediated transcriptional activation of the SMAD1/5/8 pathway. U2OS cells were co-transfected with BRE-Luc and pRL-TK, together with HA-ALK2-R206H or HA-ALK2-WT (alone or together with myc-ACVR2A, myc-ACVR2B, or myc-ACVR2B-KD). These constructs were replaced by empty vector for control samples. After 17 h, cells were starved without serum (5 h) and stimulated (or not; control) with ActA (2 nM, 19 h). Relative Luminescence Units (RLU) are expressed as mean fold induction ± SEM (n = 4 independent experiments). The results were normalized for transfection efficiency using Renilla luminescence by the DLR luminescence assay. The value in untreated, unstimulated cells was taken as 1. The cell-surface levels of the tagged receptors were not altered by the co-expressed receptors . Asterisks show significant differences between the pairs indicated by the brackets, using one-way ANOVA and Bonferroni post hoc test (**, p < 1 × 10 −3 ; ***, p < 5 × 10 −4 ; ****, p < 10 −4 ; n.s. = not significant).

Article Snippet: The U2OS human cell line was authenticated by STR analysis at Microsynth AG (Balgach, Switzerland).

Techniques: Activation Assay, Transfection, Construct, Plasmid Preparation, Control, Luminescence Assay

Journal: Biomedicines

Article Title: Anti-Inflammatory and Cancer-Preventive Potential of Chamomile ( Matricaria chamomilla L.): A Comprehensive In Silico and In Vitro Study

doi: 10.3390/biomedicines12071484

Figure Lengend Snippet: Confocal immunofluorescence microscopy of the microtubule network in U2OS cells upon treatment with ( A ) quercetin and ( B ) lupeol at concentrations of 0.1 µM, 1 µM, and 10 µM for 24 h. Vincristine (1 µM) and paclitaxel (1 µM) served as positive controls and DMSO as the negative control. The cells were imaged using a Thunder Imager Live Cell microscope with a 63×/1.40 NA objective lens (HC PL APO CS2 63×/1.40 OIL UV). The microtubules were visualized using green fluorescence for GFP (green), and the images were merged with DAPI (blue) to highlight the nucleus.

Article Snippet: In this context, it was interesting that the cytotoxicity of both compounds in CCRF-CEM and U2OS cells was not caused by apoptosis as the most common mode of cell death but by necrosis.

Techniques: Immunofluorescence, Microscopy, Negative Control, Fluorescence

Journal: Biomedicines

Article Title: Anti-Inflammatory and Cancer-Preventive Potential of Chamomile ( Matricaria chamomilla L.): A Comprehensive In Silico and In Vitro Study

doi: 10.3390/biomedicines12071484

Figure Lengend Snippet: Cell cycle arrest of U2OS cells by quercetin and lupeol. ( A ) Debris was gated out (SSC-A vs. FSC-A) with the first gate. ( B ) With the second gate (FSC-H vs. FSC-A), only single cells of normal morphology were gated. Duplets were gated out. ( C , D ) Three-dimensional representation of DNA histograms of U2OS cells exposed to 1 × IC 50 and 4 × IC 50 quercetin and lupeol for 72 h. DMSO was used as the negative control, and 1 × IC 50 vincristine was used as the positive control. ( C ) Cells treated with lupeol and ( D ) cells treated with quercetin. The histograms were obtained through flow cytometry using an excitation of 488 nm and an emission wavelength of 530 nm. ( E , F ) Bar diagrams showing the distinct phases of cell cycle upon treatment with quercetin and lupeol for 72 h. ( E ) Cells treated with lupeol and ( F ) cells treated with quercetin. The bar diagrams were created through the calculation of the mean values ± SD of three independent experiments. *** p < 0.001, ** p < 0.01, and * p < 0.05 compared to the negative control using paired two-tailed t -test.

Article Snippet: In this context, it was interesting that the cytotoxicity of both compounds in CCRF-CEM and U2OS cells was not caused by apoptosis as the most common mode of cell death but by necrosis.

Techniques: Negative Control, Positive Control, Flow Cytometry, Two Tailed Test

Journal: Biomedicines

Article Title: Anti-Inflammatory and Cancer-Preventive Potential of Chamomile ( Matricaria chamomilla L.): A Comprehensive In Silico and In Vitro Study

doi: 10.3390/biomedicines12071484

Figure Lengend Snippet: Dose–response curves of quercetin and lupeol as determined through resazurin assay. The mean values and standard deviation values are from three independent experiments. The tumor cells were subjected to treatment with each compound at concentrations of 10 µM, 25 µM, 50 µM, and 100 µM for 72 h. ( A ) Sensitive CCRF-CEM and the drug-resistant P-glycoprotein overexpressing CEM/ADR5000 leukemia cells. ( B ) U87/ΔEGFR transfected with a deletion-activated cDNA of EGFR and its wild-type U87MG glioblastoma cells. ( C ) HCT116 p53 +/+ and knockout HCT116 p53 −/− colorectal cancer cells. ( D ) U2OS osteosarcoma cells.

Article Snippet: In this context, it was interesting that the cytotoxicity of both compounds in CCRF-CEM and U2OS cells was not caused by apoptosis as the most common mode of cell death but by necrosis.

Techniques: Resazurin Assay, Standard Deviation, Transfection, Knock-Out

Journal: Biomedicines

Article Title: Anti-Inflammatory and Cancer-Preventive Potential of Chamomile ( Matricaria chamomilla L.): A Comprehensive In Silico and In Vitro Study

doi: 10.3390/biomedicines12071484

Figure Lengend Snippet: Detection of cell death in U2OS cells using flow cytometry and annexin-V/PI staining using a flow cytometer. ( A , B ) Cells treated for 72 h with 0.5 × IC 50 , 1 × IC 50 , 2 × IC 50 , and 4 × IC 50 of lupeol and quercetin, respectively. ( C , D ) represent bar diagrams of the percentage of cells in quadrium treated with lupeol ( C ) and quercetin ( D ). For details, see . Treatment with both compounds at 4 × IC 50 showed a tendency for increased necrosis, which was, however, not statistically significant compared to the negative control.

Article Snippet: In this context, it was interesting that the cytotoxicity of both compounds in CCRF-CEM and U2OS cells was not caused by apoptosis as the most common mode of cell death but by necrosis.

Techniques: Flow Cytometry, Staining, Negative Control

Journal: Acta Biotheoretica

Article Title: Tumor Growth, Proliferation and Diffusion in Osteosarcoma

doi: 10.1007/s10441-025-09494-4

Figure Lengend Snippet: Approximation of \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\alpha$$\end{document} α and \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\beta$$\end{document} β parameters for power law

Article Snippet: The U2OS cell line, established by Pontén and Saksela in 1964 (Pontén and Saksela ), from a moderately differentiated sarcoma of the tibia in a 15-year-old girl (Merck KGaA (Merck)), represents one of the first human cell lines derived from a mesenchymal tumor.

Techniques:

Journal: Acta Biotheoretica

Article Title: Tumor Growth, Proliferation and Diffusion in Osteosarcoma

doi: 10.1007/s10441-025-09494-4

Figure Lengend Snippet: Approximation of the \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\rho$$\end{document} ρ parameters with logistic model

Article Snippet: The U2OS cell line, established by Pontén and Saksela in 1964 (Pontén and Saksela ), from a moderately differentiated sarcoma of the tibia in a 15-year-old girl (Merck KGaA (Merck)), represents one of the first human cell lines derived from a mesenchymal tumor.

Techniques:

Journal: Acta Biotheoretica

Article Title: Tumor Growth, Proliferation and Diffusion in Osteosarcoma

doi: 10.1007/s10441-025-09494-4

Figure Lengend Snippet: Summary of results \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\alpha$$\end{document} α , \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\beta$$\end{document} β , \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\rho$$\end{document} ρ , and \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\bar{D}$$\end{document} D ¯ vs. experimental data

Article Snippet: The U2OS cell line, established by Pontén and Saksela in 1964 (Pontén and Saksela ), from a moderately differentiated sarcoma of the tibia in a 15-year-old girl (Merck KGaA (Merck)), represents one of the first human cell lines derived from a mesenchymal tumor.

Techniques: