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IL-8 analogue CXCL8 (3-72) K11R/G31P, modulates LPS-induced inflammation via AKT1-NF-kβ and ERK1/2-AP-1 pathways in THP-1 monocytes

Overview of attention for article published in Human Immunology, August 2018
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Title
IL-8 analogue CXCL8 (3-72) K11R/G31P, modulates LPS-induced inflammation via AKT1-NF-kβ and ERK1/2-AP-1 pathways in THP-1 monocytes
Published in
Human Immunology, August 2018
DOI 10.1016/j.humimm.2018.08.007
Pubmed ID
Authors

Williams Walana, Jing-Jing Wang, Iddrisu Baba Yabasin, Michael Ntim, Sylvanus Kampo, Mahmoud Al-Azab, Abdalkhalig Elkhider, Eugene Dogkotenge Kuugbee, Jya-Wei Cheng, John R Gordon, Fang Li

Abstract

IL-8 is elevated during inflammation, and it initiates cascade of down-stream reactions. Its antagonist, CXCL8 (3-72) K11R/G31P (G31P), represses inflammatory reactions via competitive binding to CXC chemokine family, preferentially G protein-couple receptors (GPCRs) CXCR1/2. This study reports the effect of G31P on the transcription profile of lipopolysaccharide (LPS) induced inflammation in THP-1 monocytes ex-vivo. LPS (1µg/ml) induced elevation of IL-8 was significantly reduced by G31P (20 µg/ml and 30µg/ml), with relatively increased inhibition of CXCR2 than CXCR1. Transcription of IL-1β, IL-6, and TNF-α were significantly inhibited, while IL-10 remained relatively unchanged. G31P treatment also had repressing effect on the inflammatory associated enzymes COX-2, MMP-2, and MMP-9. Significant restriction of c-Fos, and NF-kβ mRNA expression was observed, while that of c-Jun was marginally elevated. Conversely, SP-1 mRNA expression was seen to increase appreciably by G31P treatment. While the translation of pAKT, pERK1/2, and p65- NF-kβ were down-regulated by the G31P following THP-1 cells stimulation with LPS, reactive oxygen species (ROS) expression was on the positive trajectory. Collectively, the IL-8 analogue, G31P, modulates the inflammatory profile of LPS induced inflammation in THP-1 monocytes via AKT1-NF-kβ and ERK1/2-AP-1 pathways.

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Mendeley readers

The data shown below were compiled from readership statistics for 13 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 13 100%

Demographic breakdown

Readers by professional status Count As %
Student > Master 4 31%
Student > Ph. D. Student 2 15%
Student > Postgraduate 1 8%
Unknown 6 46%
Readers by discipline Count As %
Pharmacology, Toxicology and Pharmaceutical Science 3 23%
Agricultural and Biological Sciences 1 8%
Immunology and Microbiology 1 8%
Unknown 8 62%