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. 2020 Nov 6;10:19272. doi: 10.1038/s41598-020-76285-x

Figure 2.

Figure 2

Knockdown of chop alleviates immunoparalysis in CLP mice. (a) Adenoviruses expressing shRNAs specifically targeting chop were intravenously injected into C57BL6 mice through the tail vein. After 7 days, CLP was performed. Effects of chop-knockdown on the mortality of CLP mice was detected (n = 20), Kaplan–Meier curves and the log-rank test were used to compare mortality rates, *p < 0.05. (b) The effects of chop-knockdown on the bacterial clearance in blood, peritoneum lavage and spleen of CLP mice were examined at the indicated times after CLP (n = 6). (c) The effects of chop-knockdown on the production of IL-1β (c1), TNFα (c2), IL-6 (c3) and IL-10 (c4) in serum were examined at the indicated times after CLP by ELISA (n = 6). (d) The effects of chop-knockdown on the production of IL-1β (d1), TNFα (d2), IL-6 (d3) and IL-10 (d4) in peritoneum lavage were examined at the indicated times after CLP by ELISA (n = 6). (e) Blood was collected at 96 h after CLP and stimulated with LPS (100 ng/ml) for 1 h. The level of TNFα was examined by ELISA (n = 3). (f) The percentages of CD4+ and CD8+ T cells in the spleen were examined at 96 h after CLP by flow cytometry (n = 3). The flow histograms are presented in Supplementary Figs. S19 and S20. (g) The ratio of CD4+/CD8+ T cells in the spleen was calculated according to the corresponding percentages of CD4+ and CD8+ T cells, respectively (n = 3). The data are represented as the mean ± SD (bg), NS > 0.05 and ***p < 0.001, Student’s t test.