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3 protocols using ultrascence pico ultra western substrate

1

Protein Expression Analysis Workflow

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CM were mixed with 4× Laemmli sample buffer (containing 2-mercaptoethanol) and boiled for 10 min at 95°C. 15-μl protein volumes were separated on 4–15% Mini-PROTEAN TGX stain-free protein gels (4568086; Bio-Rad), and whole proteins were detected with the Criterion Stain-free imaging system (Bio-Rad). Next, the proteins were transferred on polyvinylidene difluoride membranes using the Trans-Blot-Turbo system (Bio-Rad). The membranes were blocked in 5% nonfat dry milk/TBS-T for 1 h at RT. The following primary antibodies were diluted 1:1,000 in 5% BSA/TBS-T and incubated overnight at 4°C: MMP1 (sc-30069; Santa Cruz), SERPINE1 (sc-5297; Santa Cruz), TIMP2 (ab53730; Abcam), COL6A1 (sc-377143; Santa Cruz), FN1 (F3648; Sigma-Aldrich), and THBS1 (sc-59887; Santa Cruz). Membranes were 3× washed in TBS-T and the following secondary antibodies were diluted 1:20,000 in 2.5% nonfat dry milk/TBS-T and incubated for 1 h at RT: goat-anti-mouse-HRP (SAB3701073-2; Sigma-Aldrich) or goat-anti-rabbit-HRP (SAB3700878-1; Sigma-Aldrich). HRP was visualized by the UltraScence Pico Ultra Western Substrate (CCH345-B; GeneDireX) and the ChemiDoc MP imaging system (Bio-Rad).
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2

Western Blot Analysis of PIEZO1

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Cells were washed with PBS and lysed directly in the cell culture dish with 80 μl of 1x reduced Laemmli buffer (Fisher Scientific 15493939) and boiled for 5 min at 95°C. 15 μl of each sample was loaded onto a 4-15% Mini-PROTEAN TGX stain-free protein gel (Bio-Rad 4568086). Total protein was analysed using the Criterion Stain-free imaging system (Bio-Rad) and subsequently transferred on polyvinylidene difluoride membranes using the Trans-Blot-Turbo Transfer System (Bio-Rad). Membrane blocking was carried out with 5% nonfat dry milk/TBS-T for 1 h at room temperature. The primary antibodies targeting PIEZO1 (Thermo Fisher Scientific MA5-32876, 1:500) and β-tubulin (MERCK Millipore MAB3408, 1:10’000) were diluted in 5% BSA/TBS-T and incubated overnight at 4° C. Next, the membranes were washed 3 times in TBS-T and incubated with the secondary antibody (anti-mouse, Sigma-Aldrich SAB3701073, 1:20’000) for 1 h at room temperature. Images were taken using UltraScence Pico Ultra Western Substrate (GeneDireX CCH345-B) and the ChemiDoc MP imaging system (Bio-Rad).
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3

Western Blot Analysis of PIEZO1

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Cells were washed with PBS and lysed directly in the cell culture dish with 80 μl of 1x reduced Laemmli buffer (Fisher Scientific 15493939) and boiled for 5 min at 95°C. 15 μl of each sample was loaded onto a 4-15% Mini-PROTEAN TGX stain-free protein gel (Bio-Rad 4568086). Total protein was analysed using the Criterion Stain-free imaging system (Bio-Rad) and subsequently transferred on polyvinylidene difluoride membranes using the Trans-Blot-Turbo Transfer System (Bio-Rad). Membrane blocking was carried out with 5% nonfat dry milk/TBS-T for 1 h at room temperature. The primary antibodies targeting PIEZO1 (Thermo Fisher Scientific MA5-32876, 1:500) and β-tubulin (MERCK Millipore MAB3408, 1:10’000) were diluted in 5% BSA/TBS-T and incubated overnight at 4° C. Next, the membranes were washed 3 times in TBS-T and incubated with the secondary antibody (anti-mouse, Sigma-Aldrich SAB3701073, 1:20’000) for 1 h at room temperature. Images were taken using UltraScence Pico Ultra Western Substrate (GeneDireX CCH345-B) and the ChemiDoc MP imaging system (Bio-Rad).
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