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3 protocols using ab265591

1

Protein Extraction and Western Blot Analysis

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Protein extraction from NCI-H2030 and NCI-H1650 cells was implemented via the RIPA solution (P0013C; Beyotime, China). Protein concentrations were tested utilizing BCA assay kits (P0011; Beyotime). The extracted proteins were denatured in boiling water for 15-minutes. Thereafter, electrophoresis was carried out utilizing 10% SDS-PAGE gel for separation of protein molecules. Following protein transference onto PVDF membranes, the proteins were blocked in 5% nonfat milk at room temperature for 2 hours. Afterwards, incubation with primary antibody of β-catenin (1/1000; ab265591; Abcam, USA), E-cadherin (1/2000; ab231303), GAPDH (1/2500; ab9485), PKM2 (1/1000; #4053; Cell Signaling Technology, USA), phosphorylated PKM2 (p-PKM2; 1/1000; #3827; Cell Signaling Technology), lactate dehydrogenase A (LDHA; 1/1000; #3582; Cell Signaling Technology), and glucose transporter 1 (GLUT1; 1/1000; #73015; Cell Signaling Technology) was implemented at 4°C lasting 18 hours, followed by incubation with IgG-HRP goat anti-rabbit (1/3000; #7074; Cell Signaling Technology) for 2 hours. Signals were developed with ECL (Sigma-Aldrich) and normalized.
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2

Protein Expression and Signaling Pathways

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Protein (40 μg) was extracted using protein lysis buffer (Beyotime, Beijing, China), separated by 10% SDS-PAGE and transferred to polyvinylidene difluoride (PVDF) membranes. The membranes were blocked with 5% skimmed milk, followed by incubation with primary antibodies at 4 °C overnight. The membranes were incubated with horseradish peroxidase-conjugated secondary antibodies for 2 h. Blots were developed using the ECL system (Amersham Biosciences, Little Chalfont, UK). The antibodies used in our study were purchased from Abcam (Cambridge, UK), including anti-β-catenin (phospho Y489) antibody (ab119801), anti-β-catenin antibody ab265591), anti-focal adhesion kinase (FAK) (phospho Y397) antibody (ab81298), anti-FAK antibody (ab40794), anti-bone morphogenetic protein (BMP2) antibody (ab214821), anti-osteocalcin (OCN) antibody (ab133612), anti-Runt-related transcription factor (RUNX2) antibody (ab264077). GAPDH was selected as internal reference gene. All experiments were repeated at least three times.
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3

Osteoblast Protein Extraction and Analysis

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After two washes with PBS, the cells were treated with radioimmunoprecipitation buffer (Beyotime) containing 1 mmol L−1 phenylmethyl sulfonyl fluoride. Following a 1 minute ultrasonic shock, the MC3T3-E1 cells were centrifuged at 12 000g and stored at 4 °C for 10 minutes. The cell fragments were then discarded to obtain the total protein. The proteins were loaded onto a 7.5% SDS-polyacrylamide gel for electrophoresis and transferred to a polyvinylidene fluoride membrane. The membrane was incubated in 5% bovine serum albumin for 2 hours and then with primary antibodies, including ALP (1 : 1000, Abcam, ab154100), RUNX2 (1 : 1000, Abclonal, A11753), β-catenin (1 : 1000, Abcam, ab265591), phosphorylation of β-catenin (1 : 1000, Abcam, ab75777), and GAPDH (1 : 2500, Abcam, ab9485), which were incubated overnight at 4 °C. The membrane was visualized using an enhanced chemiluminescent reagent (Abcam), and GAPDH was used as an internal control. Secondary antibodies (1 : 5000, ab6721, Abcam) were applied for 2 hours in the analysis.
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