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4 protocols using anti py701 stat1

1

Evaluating Signaling Pathways in Cells

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H2O2 (30%) and crystal violet was purchased from Sigma (St. Louis, MO, USA). MTT reagent was purchased from Duchefa Biochemie (Haarlem, Netherlands). anti-pY701-STAT1, anti-STAT1, anti-pY705-STAT3, anti-STAT3, pY694-STAT5, anti-STAT5, anti-pT202/Y204-p44/42 MAPK (Erk1/2), anti-p44/42 MAPK (Erk1/2), anti-pT183/Y185-SAPK/JNK and anti-SAPK/JNK, anti-pT180/Y182-p38, anti-p38, anti-pS473-Akt, anti-Akt, anti-PT389-p70S6 kinase, anti- p70S6 kinase, anti-pS133-CREB, anti-CREB were purchased from Cell Signaling Technology (Danvers, MA, USA). anti-Synaptophysin, anti-PSD95, anti-pT205-Tau, anti-pS262-Tau, and anti-Tau were purchased from ABclonal (Wuhan, China). anti-α-Tubulin was purchased from Abbkine (Wuhan, China). All other chemicals were obtained from Sigma-Aldrich (St. Louis, MO, USA).
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2

Toll-like Receptor Signaling in Inflammation

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Pam3CSK4 (TLR1/2) and LPS (TLR4) were obtained from InvivoGen (Carlsbad, CA, USA). Mouse recombinant IFN-β was purchased from PBL InterferonSource (now PBL Assay Science, Piscataway, NJ, USA) and mouse IFN-γ was from R&D Systems (Minneapolis, MN, USA). Antibodies used in this study were obtained as follows. Anti-H-PGDS and Anti-COX-2 antibodies were produced by Cayman Chemical (Ann Arbor, MI, USA). Anti-STAT1 and anti-pY701-STAT1 antibodies were from Cell Signaling Technology (Danvers, MA, USA). Anti-actin antibody was from BD Biosciences (Franklin Lakes, NJ, USA). PGs were purchased from Cayman Chemical (Ann Arbor, MI, USA). All other chemicals were from Sigma (St. Louis, MO, USA), unless stated otherwise.
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3

Investigating PD-L1 Pathway Regulation

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Sodium bicarbonate (NaHCO3), lactic acid, sodium lactate and sodium oxamate were obtained from Sigma Aldrich (St. Louis, MO, USA). The antibodies used in this study were as follows: anti-PD-L1 (Abcam, Cambridge, UK); anti-LDH-A (Santa Cruz Biotechnology, Santa Cruz, CA, USA); anti-pY701-STAT1, anti-STAT1, anti-pY705-STAT3, anti-pS727-STAT3, anti-STAT3 and anti-β-actin (Cell Signaling Technology, Danvers, MA, USA); and anti-HIF-1α (Abbkine, Wuhan, China).
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4

Western Blot Analysis of Signaling Proteins

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Lysates were incubated at 95°C for 10 minutes in Laemmli sample buffer (Bio-Rad Laboratories). Lysates were run on an SDS-PAGE gel with a protein ladder standard (Bio-Rad Laboratories) and transferred to a nitrocellulose membrane (Bio-Rad Laboratories). Blots were incubated in 5% milk in TBST for 1 hour at RT. Blots were incubated in primary antibody (1:1,000 anti-MAPK11 Cell Signaling no. 2339, 1:1,000 anti-MAPK14 Cell Signaling no. 8690, 1:1,000 anti-MAPK12 Cell Signaling no. 2307, 1:1,000 anti-MSK2 Cell Signaling no. 3679, 1:5,000 anti-SARS-CoV-1/2 N (1 g/mL, clone 1C7C7, a kind gift from Thomas Moran), 1:3,000 anti-β-actin Cell Signaling no. 3700, 1:1,000 anti-vinculin Cell Signaling no. 13901, 1:1,000 anti-MX1 abcam no. ab95926, 1:1,000 anti-P(Y701)-STAT1 Cell Signaling no. 9167, 1:1,000 anti-STAT1 Cell Signaling no. 14995) in 1% milk in TBST overnight at 4°C. Blots were washed thrice for 5 minutes in TBST. Blots were incubated in secondary HRP-conjugated (Bio-Rad Laboratories) or infrared-conjugated secondary antibodies (LICOR Biosciences) in 1% milk in TBST. Blots were washed thrice for 5 minutes in TBST. Blots were imaged on a Chemiluminescence digital imager (Bio-Rad Laboratories) using FEMTO ECL reagent (Thermo Fisher Scientific) or an infrared digital imager (LICOR Biosciences).
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