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Kim SY, Heo S, Kim SH, Kwon M, Sung NJ, Ryu AR, Lee MY, Park SA, Youn HS. Suppressive effects of dehydrocostus lactone on the toll-like receptor signaling pathways. Int Immunopharmacol 2019; 78:106075. [PMID: 31812722 DOI: 10.1016/j.intimp.2019.106075] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 11/13/2019] [Accepted: 11/21/2019] [Indexed: 01/17/2023]
Abstract
Toll-like receptors (TLRs) are a group of pattern-recognition receptors (PRRs) that are at the core of innate and adaptive immune responses. TLRs activation triggers the activation of two downstream signaling pathways, the myeloid differential factor 88 (MyD88)- and toll-interleukin-1 receptor domain-containing adapter inducing interferon-β (TRIF)-dependent pathways. To evaluate the therapeutic potential of DHL, a natural sesquiterpene lactone derived from Inulahelenium L. and Saussurea lappa, we examined its effect on signal transduction via the TLR signaling pathways. DHL inhibited the activation of nuclear factor-κB (NF-κB) and interferon regulatory factor 3 (IRF3), the representative transcription factors involved in the inflammatory response, induced by TLR agonists, as well as the expression of cyclooxygenase-2 and interferon inducible protein-10. DHL also inhibited the activation of NF-κB and IRF3 induced by the overexpression of downstream signaling components of the TLRs signaling pathways. All results suggest that DHL might become a new therapeutic drug for a variety of inflammatory diseases.
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Affiliation(s)
- Su Yeon Kim
- Department of Biomedical Laboratory Science, College of Medical Sciences, SoonChunHyang University, Asan, Chungnam 31538, Republic of Korea
| | - Sunghye Heo
- Department of Biomedical Laboratory Science, College of Medical Sciences, SoonChunHyang University, Asan, Chungnam 31538, Republic of Korea
| | - Seung Han Kim
- Department of Biomedical Laboratory Science, College of Medical Sciences, SoonChunHyang University, Asan, Chungnam 31538, Republic of Korea
| | - Minji Kwon
- Department of Biomedical Laboratory Science, College of Medical Sciences, SoonChunHyang University, Asan, Chungnam 31538, Republic of Korea
| | - Nam Ji Sung
- Department of Medical Science, SoonChunHyang University, Asan, Chungnam 31538, Republic of Korea
| | - A-Reum Ryu
- Department of Medical Science, SoonChunHyang University, Asan, Chungnam 31538, Republic of Korea
| | - Mi-Young Lee
- Department of Medical Science, SoonChunHyang University, Asan, Chungnam 31538, Republic of Korea
| | - Sin-Aye Park
- Department of Biomedical Laboratory Science, College of Medical Sciences, SoonChunHyang University, Asan, Chungnam 31538, Republic of Korea
| | - Hyung-Sun Youn
- Department of Biomedical Laboratory Science, College of Medical Sciences, SoonChunHyang University, Asan, Chungnam 31538, Republic of Korea.
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Kim AY, Shim HJ, Kim SY, Heo S, Youn HS. Differential regulation of MyD88- and TRIF-dependent signaling pathways of Toll-like receptors by cardamonin. Int Immunopharmacol 2018; 64:1-9. [DOI: 10.1016/j.intimp.2018.08.018] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Revised: 08/09/2018] [Accepted: 08/15/2018] [Indexed: 01/01/2023]
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Kim AY, Shim HJ, Shin HM, Lee YJ, Nam H, Kim SY, Youn HS. Andrographolide suppresses TRIF-dependent signaling of toll-like receptors by targeting TBK1. Int Immunopharmacol 2018. [DOI: 10.1016/j.intimp.2018.02.019] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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VanPatten S, Al-Abed Y. High Mobility Group Box-1 (HMGb1): Current Wisdom and Advancement as a Potential Drug Target. J Med Chem 2018; 61:5093-5107. [PMID: 29268019 DOI: 10.1021/acs.jmedchem.7b01136] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
High mobility group box-1 (HMGb1) protein, a nuclear non-histone protein that is released or secreted from the cell in response to damage or stress, is a sentinel for the immune system that plays a critical role in cell survival/death pathways. This review highlights key features of the endogenous danger-associated molecular pattern (DAMP) protein, HMGb1 in the innate inflammatory response along with various cofactors and receptors that regulate its downstream effects. The evidence demonstrating increased levels of HMGb1 in human inflammatory diseases and conditions is presented, along with a summary of current small molecule or peptide-like antagonists proven to specifically target HMGb1. Additionally, we delineate the measures needed toward validating this protein as a clinically relevant biomarker or bioindicator and as a relevant drug target.
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Affiliation(s)
- Sonya VanPatten
- Center for Molecular Innovation , The Feinstein Institute for Medical Research , 350 Community Drive , Manhasset , New York 11030 , United States
| | - Yousef Al-Abed
- Center for Molecular Innovation , The Feinstein Institute for Medical Research , 350 Community Drive , Manhasset , New York 11030 , United States
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