PMID- 34270816 OWN - NLM STAT- MEDLINE DCOM- 20211229 LR - 20220731 IS - 1097-0231 (Electronic) IS - 0951-4198 (Print) IS - 0951-4198 (Linking) VI - 35 IP - 20 DP - 2021 Oct 30 TI - Inflammation protein quantification by multiple reaction monitoring mass spectrometry in lipopolysaccharide-stimulated THP-1 cells. PG - e9166 LID - 10.1002/rcm.9166 [doi] LID - e9166 AB - RATIONALE: Inflammation is a cascade of events mediated by a cytokine network triggering the cellular response. In order to monitor the modulation of the crucial inflammatory proteins, e.g., Tumour Necrosis Factor-alpha (TNF-alpha), Interferon-gamma (INF-gamma), Interleukin-8 (IL-8) and Interleukin-10 (IL-10), upon stimulation with endotoxins, differentiated and undifferentiated THP-1 cells were treated with lipopolysaccharides (LPSs) from E. coli, key cell wall components of Gram-negative bacteria. METHODS: The multiple reaction monitoring mass spectrometry (MRM-MS) method was optimized by using the standard proteins to be quantified, in order to construct external calibration curves and define the analytical parameters. The developed method was used to quantify the above-mentioned inflammatory proteins in THP-1 differentiated cells upon stimulation with LPSs with high accuracy, sensitivity, and robustness. RESULTS: The analysis of such proteins in MRM mode allowed the kinetics of stimulation along the time up to 24 h to be followed and the MS results were found to be comparable with those obtained by Western-blotting. A significant increase in TNF-alpha release triggered a cascade mechanism leading to the production of INF-gamma and IL-8. IL-10, instead, was found to be constant throughout the process. CONCLUSIONS: The developed MRM-MS method allowed the quantification of TNF-alpha, INF-gamma, IL-8 and IL-10 along a time-course from 2 to 24 h. Hence, a trace of the kinetics of the inflammatory response in THP-1 cells upon stimulation with E. coli LPSs was obtained. Finally, the extensibility of the developed MRM method to serum samples and other matrices demonstrated the versatility of the approach and the possibility to quantify multiple target proteins in different biological samples by using a few microliters in a single analysis. CI - (c) 2021 The Authors. Rapid Communications in Mass Spectrometry published by John Wiley & Sons Ltd. FAU - Illiano, Anna AU - Illiano A AUID- ORCID: 0000-0003-1491-8966 AD - CEINGE Advanced Biotechnologies, University of Naples Federico II, Naples, Italy. AD - Department of Chemical Sciences, University of Naples Federico II, Naples, Italy. AD - Consorzio Interuniversitario Istituto Nazionale Biostrutture e Biosistemi, Rome, Italy. FAU - Pinto, Gabriella AU - Pinto G AUID- ORCID: 0000-0001-9169-3452 AD - Department of Chemical Sciences, University of Naples Federico II, Naples, Italy. AD - Consorzio Interuniversitario Istituto Nazionale Biostrutture e Biosistemi, Rome, Italy. FAU - Gaglione, Rosa AU - Gaglione R AUID- ORCID: 0000-0003-2391-0237 AD - Department of Chemical Sciences, University of Naples Federico II, Naples, Italy. FAU - Arciello, Angela AU - Arciello A AUID- ORCID: 0000-0001-8269-6459 AD - Department of Chemical Sciences, University of Naples Federico II, Naples, Italy. FAU - Amoresano, Angela AU - Amoresano A AUID- ORCID: 0000-0002-8386-655X AD - Department of Chemical Sciences, University of Naples Federico II, Naples, Italy. AD - Consorzio Interuniversitario Istituto Nazionale Biostrutture e Biosistemi, Rome, Italy. LA - eng GR - University of Naples Federico II/ PT - Evaluation Study PT - Journal Article PL - England TA - Rapid Commun Mass Spectrom JT - Rapid communications in mass spectrometry : RCM JID - 8802365 RN - 0 (Interleukin-8) RN - 0 (Lipopolysaccharides) RN - 0 (Tumor Necrosis Factor-alpha) RN - 130068-27-8 (Interleukin-10) RN - 82115-62-6 (Interferon-gamma) SB - IM MH - Escherichia coli/immunology/physiology MH - Escherichia coli Infections/immunology/microbiology MH - Humans MH - Inflammation/*immunology/microbiology MH - Interferon-gamma/chemistry/immunology MH - Interleukin-10/chemistry/immunology MH - Interleukin-8/chemistry/immunology MH - Kinetics MH - Lipopolysaccharides/adverse effects/*immunology MH - Mass Spectrometry/*methods MH - Monocytes/*chemistry/*immunology MH - THP-1 Cells MH - Tumor Necrosis Factor-alpha/chemistry/immunology PMC - PMC9285679 EDAT- 2021/07/17 06:00 MHDA- 2021/12/30 06:00 PMCR- 2022/07/15 CRDT- 2021/07/16 18:02 PHST- 2021/07/13 00:00 [revised] PHST- 2021/04/09 00:00 [received] PHST- 2021/07/13 00:00 [accepted] PHST- 2021/07/17 06:00 [pubmed] PHST- 2021/12/30 06:00 [medline] PHST- 2021/07/16 18:02 [entrez] PHST- 2022/07/15 00:00 [pmc-release] AID - RCM9166 [pii] AID - 10.1002/rcm.9166 [doi] PST - ppublish SO - Rapid Commun Mass Spectrom. 2021 Oct 30;35(20):e9166. doi: 10.1002/rcm.9166.