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- W4229000147 abstract "The lung is the first and most frequent organ to fail among sepsis patients. The mortality rate of sepsis-related acute lung injury (ALI) is high. Despite appropriate antimicrobial therapy, no treatment strategies are available for sepsis-induced ALI. Stem cell-mediated paracrine signaling is a potential treatment method for various diseases. This study aimed to examine the effects of induced pluripotent stem cell-derived conditioned medium (iPSC-CM) combined with antibiotics on ALI in a rat model of Escherichia coli-induced sepsis. Rats were administered either iPSC-CM or the vehicle (saline) with antibiotics (ceftriaxone). After 72 h, liquid biopsy, bronchoalveolar lavage fluid (BALF), and tissues were harvested for analysis. Survival rates were observed for up to 3 days. Furthermore, we examined the effects of iPSC-CM on cytokine production, metalloproteinase 9 (MMP-9) expression, and NLRP3-ASC interaction in RAW264.7 cells stimulated with lipopolysaccharide/interferon-γ (LPS/IFN-γ). Combined treatment of iPSC-CM with antibiotics significantly improved survival in E. coli-infected rats (p = 0.0006). iPSC-CM ameliorated E. coli-induced infiltration of macrophages, reducing the number of cells in BALF, and suppressing interleukin (IL)-1β, MIP-2, IL-6, and MMP-9 messenger RNA in lung sections. iPSC-CM treatment attenuated NLRP3 expression and inhibited NLRP3 inflammasome activation by disrupting NLRP3-mediated ASC complex formation in LPS/IFN-γ-primed RAW264.7 cells. This study reveals the mechanisms underlying iPSC-CM-conferred anti-inflammatory activity in ALI through the attenuation of macrophage recruitment to the lung, thus inactivating NLRP3 inflammasomes in macrophages. iPSC-CM therapy may be a useful adjuvant treatment to reduce sepsis-related mortality by ameliorating ALI." @default.
- W4229000147 created "2022-05-08" @default.
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- W4229000147 date "2021-10-06" @default.
- W4229000147 modified "2023-10-14" @default.
- W4229000147 title "Combination therapy of iPSC‐derived conditioned medium with ceftriaxone alleviates bacteria‐induced lung injury by targeting the NLRP3 inflammasome" @default.
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- W4229000147 doi "https://doi.org/10.1002/jcp.30596" @default.
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