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Biochimica et Biophysica Acta - Proteins and Proteomics 2019-Jan

Effects of salazosulfapyridine on the profile of cell surface proteins, revealed by biotinylation of cell surface proteins and 2-dimentional electrophoresis.

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Kazuki Omoteyama
Toshiyuki Sato
Mitsumi Arito
Masaaki Sato
Naoya Suematsu
Manae S Kurokawa
Tomohiro Kato

Märksõnad

Abstraktne

OBJECTIVE

We investigated effects of salazosulfapyridine (SASP) on the protein profile of cell surface (CS)-proteins of SW982, a human synovial sarcoma cell line, using biotinylation of CS-proteins and 2-dimensional fluorescence difference gel electrophoresis (2D-DIGE).

METHODS

SW982 cells were treated with SASP and its metabolites, sulfapyridine (SP) and 5-aminosalicylic acid (5ASA). Then the cells were treated with a membrane-impermeable biotinylating reagent. Biotinylated CS-proteins were isolated using NeutrAvidin-bound beads. CS-proteins affected by the drugs were detected by 2D-DIGE and subjected to mass spectrometry.

RESULTS

By the 2D-DIGE analysis, in total 576 spots were detected, 29 out of which showed more than ±1.5-fold different intensity in the SASP-, SP-, and 5ASA-treated cells, compared to non-treated cells (p < 0.05). Interestingly, 7 out of the 29 spots changed their intensity only by SASP and 17 spots changed their intensity only by SP. We identified 9 protein from 15 out of the 29 spots, most of which were evidenced to exist on the cell surface by flow cytometry.

CONCLUSIONS

We found novel effects of SASP and its metabolites on SW982 cells by the combination of biotinylation of cell surface proteins and 2D-DIGE analysis. These data would help understanding of anti-rheumatic actions of SASP. Furthermore, the combination would be a useful method for the analysis of CS-proteins in various conditions.

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