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Role of Natural Products in Inflammation

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Natural Products Chemistry".

Deadline for manuscript submissions: 31 May 2024 | Viewed by 511

Special Issue Editor


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Guest Editor
Centre of Experimental Medicine, Institute of Experimental Pharmacology and Toxicology, Slovak Academy of Sciences, Dúbravská Cesta 5826/9, SK-841 41 Bratislava, Slovakia
Interests: natural products; pharmacology; immunology; rheumatoid arthritis; medicinal plants; antioxidants; biological models; new generations of drug delivery; functional food
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Special Issue Information

Dear Colleagues,

Inflammation is a biological response of the immune system to infectious microorganisms,  tissue injury, cell death, and physical, chemical or biological mediators in the body in order to preserve normal tissue homeostasis. Both the innate and adaptive immune responses as are involved in inflammatory processes. However, uncontrolled acute inflammation may become chronic, contributing to a variety of chronic inflammatory diseases. Long-term use of anti-inflammatory drugs have been shown to cause many adverse effects. Hence, replacing traditional anti-inflammatory drugs with natural compounds without toxic side effects and with good curative effects is an urgent issue to be solved in the clinical treatment of inflammation-related diseases. Natural products, which have more pharmacological activities and lower toxicity, can serve as potential resources to develop natural anti-inflammatory drugs. They include bioactive peptides, fatty acids, polysaccharides, flavonoids, polyphenols, alkaloids, terpenes, natural pigments, volatile oils, and quinones, either present in the system or isolated from marine or plant sources: namely, omega-3 polyunsaturated fatty acids, white willow bark, curcumin (tumeric), green tea, pycnogenol (maritime pine bark), and resveratrol. They mostly act by suppressing the NF-kB and cyclooxygenase pathways in order to inhibit leukocyte recruitment, but other pathways could also be important and should be studied. Compounds isolated from terrestrial and marine plants are still not sufficiently investigated concerning their use as therapies in diseases involving inflammation.

Dr. Katarína Bauerová
Guest Editor

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Keywords

  • inflammation
  • natural compounds
  • terrestrial plants
  • marine plants
  • NF-kB
  • hemoxygenase and cyclooxygenase pathways

Published Papers (1 paper)

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Research

18 pages, 5200 KiB  
Article
Sesquiterpene Lactones Containing an α-Methylene-γ-Lactone Moiety Selectively Down-Regulate the Expression of Tumor Necrosis Factor Receptor 1 by Promoting Its Ectodomain Shedding in Human Lung Adenocarcinoma A549 Cells
by Quy Van Vu, Shinsei Sayama, Masayoshi Ando and Takao Kataoka
Molecules 2024, 29(8), 1866; https://doi.org/10.3390/molecules29081866 - 19 Apr 2024
Viewed by 282
Abstract
Alantolactone is a eudesmane-type sesquiterpene lactone containing an α-methylene-γ-lactone moiety. Previous studies showed that alantolactone inhibits the nuclear factor κB (NF-κB) signaling pathway by targeting the inhibitor of NF-κB (IκB) kinase. However, in the present study, we demonstrated that alantolactone selectively down-regulated the [...] Read more.
Alantolactone is a eudesmane-type sesquiterpene lactone containing an α-methylene-γ-lactone moiety. Previous studies showed that alantolactone inhibits the nuclear factor κB (NF-κB) signaling pathway by targeting the inhibitor of NF-κB (IκB) kinase. However, in the present study, we demonstrated that alantolactone selectively down-regulated the expression of tumor necrosis factor (TNF) receptor 1 (TNF-R1) in human lung adenocarcinoma A549 cells. Alantolactone did not affect the expression of three adaptor proteins recruited to TNF-R1. The down-regulation of TNF-R1 expression by alantolactone was suppressed by an inhibitor of TNF-α-converting enzyme. Alantolactone increased the soluble forms of TNF-R1 that were released into the culture medium as an ectodomain. The structure–activity relationship of eight eudesmane derivatives revealed that an α-methylene-γ-lactone moiety was needed to promote TNF-R1 ectodomain shedding. In addition, parthenolide and costunolide, two sesquiterpene lactones with an α-methylene-γ-lactone moiety, increased the amount of soluble TNF-R1. Therefore, the present results demonstrate that sesquiterpene lactones with an α-methylene-γ-lactone moiety can down-regulate the expression of TNF-R1 by promoting its ectodomain shedding in A549 cells. Full article
(This article belongs to the Special Issue Role of Natural Products in Inflammation)
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