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FPX-113 attenuates inflammatory responses by deteriorating cytokines, neutrophil activity and mast cell degranulation via Akt/ NF- κB pathway

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Abstract

Search of novel chemical compounds to manage disorders of inflammation is always on demand. Herein we report FPX-113 a novel small molecule to exhibit excellent anti-inflammatory properties in human whole blood (HWB), peripheral blood mononuclear cells (PBMCs), RBL-2H3 and THP-1 cells. FPX-113 showed an inhibition of TNF-α, IFN-γ, IL-2, IL-6, IL-8 and IL-17 release from HWB and PBMC with IC50 values of 364.6 nM, 505.2 nM, 160.2 nM, 369.1 nM 371.2 nM, 459 nM and 64.14 nM, 92.30 nM, 49.88 nM, 151.7 nM, 108.9 nM, 92.70 nM respectively. The compound inhibited neutrophil migration and elastase in a dose dependent way. Further, FPX-113 inhibited the degranulation of rat mast cell basophils in RBL-2H3 cells with an IC50 of 280.5 nM. A dose dependent inhibition of Akt phosphorylation in RBL-2H3 and THP-1 cells and down regulation of NF- κB in PBMCs, RBL-2H3 and THP-1 cells by FPX-113 were evidenced when induced with 5 μg/mL PHA + 50 ng/mL PMA for 30 min. Taken together, the results suggest FPX-113 exhibits anti-inflammatory mechanism signaled via Akt/ NF- κB pathway. These findings will provide a wide scope for FPX-113 and its close analogues to be developed as novel anti-inflammatory agents for various diseases.

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Abbreviations

ACD:

Acid citrate dextrose

ATCC:

American Type Culture Collection

DMSO:

Dimethyl sulphoxide

DNP-BSA:

2,4-Dinitrophenol- Bovine serum albumin

ELISA:

Enzyme linked immune sorbent assay

FBS:

Fetal bovine serum

fMLP:

N-Formyl methionyl-leucyl-phenylalanine

HBSS:

Hanke’s Buffered Salt Solution

HWB:

Human whole blood

IFN-γ:

Interferon gamma

IgE:

Immunoglobin E

IL:

Interleukin

Kcl,:

Potassium chloride

MTT:

3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide

NCE:

Novel chemical entity

PBMC:

Peripheral blood mono nucleocytes

PHA:

Phytohaemagglutinin

PMA:

Phorbol-12-myristate-13-acetate

RBL:

Rat basophilic leukemia

SDS:

Sodium dodecyl sulphate

TBS:

Tris buffer saline

TNF-α:

Tissue necrosis factor alpha

μM:

Micro molar

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Acknowledgments

The authors extend their appreciation to the Deanship of Scientific Research at King Khalid University, Abha, Saudi Arabia, for funding this work through General Research Project under grant number (G.R.P.1/80/40).

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Correspondence to Prasanna Rajagopalan.

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The authors hereby state that there is no any conflict of interest related to this study.

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Rajagopalan, P., A Dera, A., Abdalsamad, M.R. et al. FPX-113 attenuates inflammatory responses by deteriorating cytokines, neutrophil activity and mast cell degranulation via Akt/ NF- κB pathway. Biologia 75, 447–456 (2020). https://doi.org/10.2478/s11756-019-00367-z

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  • DOI: https://doi.org/10.2478/s11756-019-00367-z

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