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5 protocols using anti p s6rp

1

Immunoblot Analysis of Metabolic Enzymes

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We used 10% SDS-PAGE gels to separate equal amounts of protein and transferred the proteins onto polyvinylidene fluoride (PVDF) membranes for detection. The membranes were then sequentially incubated with specific anti-bodies at 4°C overnight; the membranes were then incubated with secondary anti-bodies at room temperature for 1 h the protein bands were detected using enhanced chemiluminescence. Anti-MTHFD1L, anti-MTHFD2 were purchased from Abcam, anti p-S6RP were purchased from Cell Signaling Technology, and anti-β-Actin was purchased from Proteintech (Wuhan, China).
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2

Immunohistochemical Analysis of Tumor Xenografts

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Paraffin-embedded sections of tumors from the mouse xenograft models were prepared and stained with hematoxylin and eosin (HE). To detect activation of AKT-mTOR pathway, sections were stained with anti-CD31, anti-p-S6RP, anti-p-p70S5K and anti-p-4EBP1 antibodies (Cell Signaling Technology, Danvers, MA, USA). Staining was detected using a streptavidin-biotin kit (Nichirei, Trappes, France) according to the manufacturer's protocol.
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3

Kidney Organoid Fixation and Imaging

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The chip device was taken out of the incubator for fixation, and the lid was carefully removed in a sterile biosafety cabinet. The kidney organoids adherent on the surface of the ECM were rinsed with PBS, carefully overlaid with 4% PFA, and fixed for 45 min at RT. After fixation, the samples were washed three times with 0.1% Triton X-100 (Sigma-Aldrich) for 30 min. Organoids were stained and cleared with ethyl cinnamate (Sigma-Aldrich), as described before (78 (link)). The following antibodies were used in these studies: anti-CDH1 (Abcam, ab11512), anti-CFTR (Sigma-Aldrich, HPA021939), anti-LTL (Vector Laboratories, B-1325), anti-PODXL (R&D Systems, AF1658), anti-KI67 (Dako, m7248), anti-pS6RP (Cell Signaling Technology, 2211S), anti-RAC1 (Developmental Studies Hybridoma Bank, CPTC-RAC1-2), and anti-FOS (Abcam, ab190289). Samples were examined with a Zeiss TIRF/LSM 710 confocal microscope or a Leica STELLARIS 8 confocal microscope and by using Imaris 3D software (Bitplane).
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4

Western Blot Analysis of S6 Ribosomal Protein

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Twenty μg protein from kidney homogenate were separated on 15% (wt/vol) poly acrylamide denaturing gels and electro-blotted onto Hybond-C membranes. These membranes were blocked with 5% (wt/vol) milk, separately probed with anti-S6RP (Cell Signaling Technology, Boston, USA) and anti-p-S6RP (Cell Signaling Technology). For the loading control, the same membranes were probed with anti-β-actin antibody (1:10,000 dilution, Abcam, Cambridge, UK), then incubated with peroxidase-conjugated secondary antibodies (1:10,000 dilution, Jackson ImmunoResearch, West Grove, USA) at room temperature for 1 h. Immunoreactive bands were visualized using ECL substrate (Thermo Fisher Scientific, Rockford, USA) and a Bio-Image Analysis System (Cell Biosciences, Inc., Santa Clara, USA). The semi-quantitative analysis results were expressed as optical volume density (OD × mm2) and normalized by β-actin for loading (AlphaView Software 3.3, Cell Biosciences, Inc.).
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5

Mevinolin and Akt Pathway Modulation

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Mevinolin was from Sigma-Aldrich while MK2206 and RAD001 were purchased from Selleck Chemicals. For western blotting, primary antibodies anti-prelamin A (Sc-6214) and anti-OPG were from Santa Cruz Biotechnologies. Anti-Ser 473 p-Akt, -Thr 308 p-Akt, anti-Akt, anti-p-S6RP, anti-S6RP, anti-FLAG, anti-p-P70S6K, anti-P70S6K, anti-actin, rabbit polyclonal and mouse monoclonal were from Cell Signaling Technologies. Anti-TGFbeta 2 (ab 10850) and anti-cathepsin K antibodies were from Abcam.
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