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Design, synthesis and biological evaluation of novel chromone-maleimide hybrids as potent anti-inflammatory agents against LPS-induced acute lung injury. 2022

Yali Zhang, and Zhengwei Xu, and Lingling Zhan, and Yi Gao, and Bin Zheng, and Yan Zhou, and Yaoguang Sheng, and Guang Liang, and Zengqiang Song
Chemical Biology Research Center at School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China.

Acute lung injury (ALI) is an acute inflammatory disease, which severely impacts lung function with a high lethality rate. Chromone and maleimide are very important moieties of anti-inflammatory agents. Here, forty new chromone-maleimide hybrids were readily synthesized using a Heck-type coupling strategy in good yields and were screened for their anti-inflammatory activity. A majority of these hybrids showed high inhibitory potency against LPS-stimulated release of pro-inflammatory cytokines in macrophages. Preliminary structure-activity relationship studies led to the discovery of highly potent inhibitors. Five of them were found to inhibit lipopolysaccharide (LPS)-induced IL-6 and TNF-α release in a dose-dependent manner with IC50 values in the nanomolar rang. Furthermore, in vivo administration of 5e and 5g resulted in distinctly attenuated LPS-induced ALI via inhibiting the inflammation. Thus it is evident from our study that these novel chromone-maleimide hybrids present promising therapeutic potential for ALI.

UI MeSH Term Description Entries
D008070 Lipopolysaccharides Lipid-containing polysaccharides which are endotoxins and important group-specific antigens. They are often derived from the cell wall of gram-negative bacteria and induce immunoglobulin secretion. The lipopolysaccharide molecule consists of three parts: LIPID A, core polysaccharide, and O-specific chains (O ANTIGENS). When derived from Escherichia coli, lipopolysaccharides serve as polyclonal B-cell mitogens commonly used in laboratory immunology. (From Dorland, 28th ed) Lipopolysaccharide,Lipoglycans
D008301 Maleimides Derivatives of maleimide (the structural formula H2C2(CO)2NH) containing a pyrroledione ring where the hydrogen atom of the NH group is replaced with aliphatic or aromatic groups.
D002867 Chromones 1,4-Benzopyrones,Chromone,1,4 Benzopyrones
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D000893 Anti-Inflammatory Agents Substances that reduce or suppress INFLAMMATION. Anti-Inflammatory Agent,Antiinflammatory Agent,Agents, Anti-Inflammatory,Agents, Antiinflammatory,Anti-Inflammatories,Antiinflammatories,Antiinflammatory Agents,Agent, Anti-Inflammatory,Agent, Antiinflammatory,Agents, Anti Inflammatory,Anti Inflammatories,Anti Inflammatory Agent,Anti Inflammatory Agents
D016207 Cytokines Non-antibody proteins secreted by inflammatory leukocytes and some non-leukocytic cells, that act as intercellular mediators. They differ from classical hormones in that they are produced by a number of tissue or cell types rather than by specialized glands. They generally act locally in a paracrine or autocrine rather than endocrine manner. Cytokine
D051379 Mice The common name for the genus Mus. Mice, House,Mus,Mus musculus,Mice, Laboratory,Mouse,Mouse, House,Mouse, Laboratory,Mouse, Swiss,Mus domesticus,Mus musculus domesticus,Swiss Mice,House Mice,House Mouse,Laboratory Mice,Laboratory Mouse,Mice, Swiss,Swiss Mouse,domesticus, Mus musculus
D055371 Acute Lung Injury A condition of lung damage that is characterized by bilateral pulmonary infiltrates (PULMONARY EDEMA) rich in NEUTROPHILS, and in the absence of clinical HEART FAILURE. This can represent a spectrum of pulmonary lesions, endothelial and epithelial, due to numerous factors (physical, chemical, or biological). Lung Injury, Acute,Acute Lung Injuries,Lung Injuries, Acute

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