Ye CG, Liang DY, Zhao L, Yu FP, Sun SL, Zhang JX, Liu LM. Rat Kupffer cells: Isolation, identification and LPS-stimulated TNF-α expression and secretion.
Shijie Huaren Xiaohua Zazhi 2013;
21:307-312. [DOI:
10.11569/wcjd.v21.i4.307]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To isolate, culture and identify rat Kupffer cells, and to investigate the effect of LPS on TNF-α expression and secretion in rat Kupffer cells.
METHODS: Rat liver Kupffer cells (KCs) were isolated and purified by means of in situ perfusion, density gradient centrifugation and early medium change. Isolated cells were identified by ink phagocytosis and ED2 staining test. The expression and secretion of TNF-α was detected by RT-PCR and enzyme-linked immunosorbent assay (ELISA).
RESULTS: Rat liver KCs were successfully isolated, purified, and confirmed by ink phagocytosis and ED2 staining test. Compared with non-stimulated KCs, LPS-stimulated cells had a significantly higher level of TNF-α mRNA expression (1.10 ± 0.02 vs 0.09 ± 0.01, P < 0.001). TNF-α protein levels in cell supernatants were also significantly increased in LPS-stimulated cells than in non-stimulated cells (487.10 pg/mL± 5.56 pg/mL vs 39.41 pg/mL ± 15.30 pg/mL, P < 0.001).
CONCLUSION: Rat KCs have been successfully isolated and purified by means of in situ perfusion and density gradient centrifugation, and LPS can stimulate the expression and secretion of TNF-α.
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