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2 protocols using tsg101 14497 1 ap

1

Antibody-based Protein Detection and Inhibitor Assessment

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The antibodies used targeted the following proteins (dilutions used are included):
GAPDH (CW0101: immunoblotting, 1:1000) from CWBIOTECH; F-actin (40734ES75: immunofluorescence, 1:100) from YEASEN; U1A (10212: immunoblotting, 1:500) from Proteintech; CD63 (67605-1-Ig: immunoblotting, 1:5000) from Proteintech; CD9 (60232-1-Ig: immunoblotting, 1:5000) from Proteintech; TSG101 (14497-1-AP: immunoblotting, 1:1000) from Proteintech; GPX4 (67763-1-Ig: immunoblotting, 1:5000; IHC, 1:1000) from Proteintech; and DHODH (14877-1-AP: immunoblotting, 1:2000; IHC, 1:100) from Proteintech.
The inhibitors used are as follows:
Sorafenib (HY-10201: 10 μM for the in vitro assay and 30 mg/kg for the in vivo assay) and Ferrostatin-1 (HY-100579: 60 nM for the in vitro assay), and Ferrostatin-1 (HY-100579: 5 mg/kg, intraperitoneal injection for the in vivo assay) were obtained from MedChem Express.
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2

Exosome Isolation and Characterization from hASCs

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Exos were extracted from cell culture supernatant using an exo extraction kit (EXOQ5A-1, SBI) according to instructions. HASCs were cultured in DMEM, and the supernatant was collected at 48–72 ​h to extract exos for subsequent detection. The extracted exos were re-suspended in PBS in an appropriate volume. Particle size distribution of hASCs-Exos was measured by nanoparticle tracking analysis (NTA). The morphology and size of hASCs-Exos were displayed by transmission electron microscopy (TEM). Western blot analysis was performed using CD63 (25682-1-AP, 1:500, Proteintech), CD81(66866-1-Ig, 1:3000, Proteintech), TSG101 (14497-1-AP, 1:1000, Proteintech), GM130 (11308-1-AP, 1:5000, Proteintech) and Calnexin (10427-1-AP, 1:8000, Proteintech) and exosome uptake experiment was performed according to the previous study [27 (link)].
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