Journal: Cell cycle (Georgetown, Tex.)

Article Title: TGF-β is associated with poor prognosis and promotes osteosarcoma progression via PI3K/Akt pathway activation.

doi: 10.1080/15384101.2020.1805552

Figure Lengend Snippet: Figure 1. TGF-β expression in osteosarcoma specimens and cell lines. (a) Immunohistochemical staining was used to analyze TGF-β expression in both osteosarcoma specimens and normal adjacent tissues. (b) Survival analysis was performed using the Kaplan-Meier method. Data are presented as mean ± SEM of three independent experiments. (c) TGF-β protein levels in osteosarcoma cell lines (*P < 0.05). (d) TGF-β mRNA expression in osteosarcoma cell lines (*P < 0.05).

Article Snippet: Osteosarcoma spheroids were cultured in a specialized growth medium (Celprogen Inc, Torrance, CA, USA) containing 1% N2 supplement (Invitrogen), 2% B27 supplement (Invitrogen), 20 ng/ml human platelet growth factor (Sigma-Aldrich), 100 ng/ml epidermal growth factor (Invitrogen), and 1% antimycotic (Invitrogen).

Techniques: Expressing, Immunohistochemical staining, Staining

Journal: Cell cycle (Georgetown, Tex.)

Article Title: TGF-β is associated with poor prognosis and promotes osteosarcoma progression via PI3K/Akt pathway activation.

doi: 10.1080/15384101.2020.1805552

Figure Lengend Snippet: Figure 2. Small interfering (si) RNA targeting of TGF-β (si-TGF-β) suppresses proliferation and promotes apoptosis in osteosarcoma. (a) RT-qPCR was employed to assess the knockdown efficiency of si-TGF-β, *P < 0.05 vs. the si-control group. (b) Western blotting was used to measure the knockdown efficiency of si-TGF-β, *P < 0.05 vs. the si-control group. (c)The MTT assay was used to assess the viability of U2OS and MG-63 cells transfected with si-control or si-TGF-β, *P < 0.05 vs. the si-control group. (d and e) The colony- forming ability of U2OS and MG-63 cells transfected with si-control or si-TGF -β, *P < 0.05 vs. the si-control group. (f and g) Flow cytometry analysis of the cell cycle phase distribution of U2OS and MG-63 cells transfected with si-control or si-TGF – β, *P < 0.05 vs. the si-control group. (h and i) The rate of apoptosis in U2OS and MG-63 cells transfected with si-TGF-β, *P < 0.05 vs. the si-control group. (j and k) TGF-β knockdown increases the expression of cleaved PARP, caspase-3, and BAX, *P < 0.05 vs. the si-control group.

Article Snippet: Osteosarcoma spheroids were cultured in a specialized growth medium (Celprogen Inc, Torrance, CA, USA) containing 1% N2 supplement (Invitrogen), 2% B27 supplement (Invitrogen), 20 ng/ml human platelet growth factor (Sigma-Aldrich), 100 ng/ml epidermal growth factor (Invitrogen), and 1% antimycotic (Invitrogen).

Techniques: Quantitative RT-PCR, Knockdown, Control, Western Blot, MTT Assay, Transfection, Flow Cytometry, Expressing

Journal: Cell cycle (Georgetown, Tex.)

Article Title: TGF-β is associated with poor prognosis and promotes osteosarcoma progression via PI3K/Akt pathway activation.

doi: 10.1080/15384101.2020.1805552

Figure Lengend Snippet: Figure 4. TGF-β enhances osteosarcoma cell stemness and increases the proportion of CD133+ cells. (a and b) Spheroid formation assay for U2OS and MG-63 cells transfected with si-TGF-β. Representative images (left panel) and statistical measurements (right panel). Representative micrographs of formed spheres were analyzed in cells treated with si-TGF-β or si-control. Scale bar, 100 μm. *P < 0.05 vs. the si-control group. (c and d) The percentage of CD133+ cells in U2OS- and MG-63-derived spheroids was analyzed by flow cytometry.*P < 0.05 vs. the si-control group. (e and f) Stem cell-associated protein expression was measured by western blot. *P < 0.05 vs. the si-control group.

Article Snippet: Osteosarcoma spheroids were cultured in a specialized growth medium (Celprogen Inc, Torrance, CA, USA) containing 1% N2 supplement (Invitrogen), 2% B27 supplement (Invitrogen), 20 ng/ml human platelet growth factor (Sigma-Aldrich), 100 ng/ml epidermal growth factor (Invitrogen), and 1% antimycotic (Invitrogen).

Techniques: Tube Formation Assay, Transfection, Control, Derivative Assay, Flow Cytometry, Expressing, Western Blot

Journal: Cell cycle (Georgetown, Tex.)

Article Title: TGF-β is associated with poor prognosis and promotes osteosarcoma progression via PI3K/Akt pathway activation.

doi: 10.1080/15384101.2020.1805552

Figure Lengend Snippet: Figure 5. TGF-β regulates the PI3K/mTOR signaling pathway in osteosarcoma cells. (a) p-PI3K and p-Akt expression was measured by western blot, P < 0.05 vs. the si-control group. (b and c) The colony-forming ability of si-TGF-β-transfected U2OS and MG-63 cells with or without LY294002 treatment. P < 0.05 vs. the si-control group. (d and e) Transwell assays were used to assess the invasive ability of U2OS and MG-63 cells, P < 0.05 vs. the si-control group. (f and g) A wound-healing assay was performed to measure the migratory ability of U2OS and MG-63 cells, P < 0.05 vs. the si-control group. (h and i) Spheroid formation assay for U2OS/MG-63 cells transfected with si-TGF-β. Representative images (left panel) and statistical measurement (right panel). Representative micrographs of formed spheres were analyzed in cells treated with si-TGF-β or si-control with or without LY294002 treatment. Scale bar, 100 μm. *P < 0.05 vs. the si-control group. (j and k) The percentage of CD133+ cells in U2OS cell- and MG-63 cell-derived spheroids was analyzed by flow cytometry. *P < 0.05 vs. the si-control group.

Article Snippet: Osteosarcoma spheroids were cultured in a specialized growth medium (Celprogen Inc, Torrance, CA, USA) containing 1% N2 supplement (Invitrogen), 2% B27 supplement (Invitrogen), 20 ng/ml human platelet growth factor (Sigma-Aldrich), 100 ng/ml epidermal growth factor (Invitrogen), and 1% antimycotic (Invitrogen).

Techniques: Expressing, Western Blot, Control, Transfection, Wound Healing Assay, Tube Formation Assay, Derivative Assay, Flow Cytometry