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Meta-Analysis
. 2022 Aug;71(7-8):741-758.
doi: 10.1007/s00011-022-01584-0. Epub 2022 May 25.

Inflammatory biomarkers on an LPS-induced RAW 264.7 cell model: a systematic review and meta-analysis

Bruno Matheus Facchin  1 , Gustavo Oliveira Dos Reis  1 , Guilherme Nicácio Vieira  1 , Eduarda Talita Bramorski Mohr  1 , Júlia Salvan da Rosa  1   2 , Iara Fabricia Kretzer  2 , Izabel Galhardo Demarchi  1   2   3 , Eduardo Monguilhott Dalmarco  4   5
Affiliations
Meta-Analysis

Inflammatory biomarkers on an LPS-induced RAW 264.7 cell model: a systematic review and meta-analysis

Bruno Matheus Facchin et al. Inflamm Res. 2022 Aug.

Abstract

Introduction: Several experimental models have been designed to promote the development of new anti-inflammatory drugs. The in vitro model using RAW 264.7 cells has been widely used. However, there is still no consensus on which inflammatory mediators should initially be measured to screen for possible anti-inflammatory effects. To determine the rationality of measuring inflammatory mediators together with NO, such as the levels of tumor necrosis factor (TNF)-α, and interleukins (IL) 1β and 6, we carried out this systematic review (SR) and meta-analysis (MA).

Methodology: We conducted this SR and MA in accordance with the Preferred Reporting of Systematic Reviews and Meta-Analysis and the Cochrane Handbook for Systematic Reviews of Intervention. This review was registered in the Open Science Framework ( https://doi.org/10.17605/OSF.IO/8C3HT ).

Results: LPS-induced cells produced high NO levels compared to non-LPS induced, and this production was not related to cell density. TNF-α, IL-1β, and IL-6, also showed high levels after cells had been stimulated with LPS. Though with some restrictions, all studies were reliable, as the risk of bias was detected in the test compounds and systems.

Conclusion: Measurement of NO levels may be sufficient to screen for possible anti-inflammatory action in the context of LPS-induced RAW 264.7 cells.

Keywords: In vitro techniques; Interleukin- 6; Interleukin-1 beta; Lipopolysaccharide; Macrophages; Nitricde; RAW 264.7 cells; Tumor necrosis factor-alpha.

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