1
|
Liu Y, Kim JH, Lim HK, Huang L, Choi W, Kopalli SR, Lee S, Lee BH, Lee JH, Ju Y, Lee J, Cho JY. Millingtonia hortensis L.f. ethanol extract exerts in vivo and in vitro anti-inflammatory activities through inhibition of Syk kinase in NF-κB pathway. JOURNAL OF ETHNOPHARMACOLOGY 2024; 332:118386. [PMID: 38782308 DOI: 10.1016/j.jep.2024.118386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2024] [Revised: 05/20/2024] [Accepted: 05/21/2024] [Indexed: 05/25/2024]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Millingtonia hortensis L.f., commonly known as tree jasmine or Indian cork tree, is native to South Asia and Southeast Asia. Traditionally, its stem bark, leaves, and roots are employed for pulmonary, gastrointestinal, and antimicrobial purposes, while the flowers are used in treating asthma and sinusitis. AIM OF THE STUDY The underlying anti-inflammatory mechanisms of M. hortensis remain relatively unexplored. Therefore, we studied the anti-inflammatory effects of M. hortensis and the molecular mechanisms of its ethanol extracts (Mh-EE) both in vitro and in vivo. MATERIALS AND METHODS Nitric oxide (NO) production was assessed using Griess reagent, while cell viability of RAW264.7 cell and HEK293T cells were determined via the MTT assay. Constituent analysis of Mh-EE using GC/MS-MS and HPLC, and mRNA expression of inflammatory cytokines was measured through PCR and RT-PCR. Protein levels were analyzed using western blotting. The thermal stability of Mh-EE was evaluated by CESTA. Lastly, a gastritis in vivo model was induced by HCl/EtOH, and protein expression levels were measured using western blotting. RESULTS Mh-EE significantly reduced NO production in LPS-induced RAW264.7 cells without substantially affecting cell viability. Additionally, Mh-EE decreased the expression of proinflammatory factors, such as iNOS, IL-1β and COX2. Furthermore, Mh-EE downregulated TLR4 expression, altered MyD88 recruitment, and suppressed phosphorylation of Syk, IKKα, IκBα and AKT. Simultaneously, Mh-EE also attenuated NF-κB signaling in HCl/EtOH-induced mice. CONCLUSIONS Mh-EE exerts anti-inflammatory effects by suppressing p-Syk in the NF-κB pathway, and it has potential as a novel treatment agent for inflammatory diseases.
Collapse
Affiliation(s)
- Yan Liu
- Department of Integrative Biotechnology, Sungkyunkwan University, Suwon, 16419, Republic of Korea.
| | - Ji Hye Kim
- Department of Integrative Biotechnology, Sungkyunkwan University, Suwon, 16419, Republic of Korea; Biomedical Institute for Convergence at SKKU (BICS), Sungkyunkwan University, Suwon, 16419, Republic of Korea.
| | - Hyun Kyung Lim
- Department of Integrative Biotechnology, Sungkyunkwan University, Suwon, 16419, Republic of Korea.
| | - Lei Huang
- Department of Biocosmetics, Sungkyunkwan University, Suwon, 16419, Republic of Korea.
| | - Wooram Choi
- Department of Integrative Biotechnology, Sungkyunkwan University, Suwon, 16419, Republic of Korea.
| | - Spandana Rajendra Kopalli
- Department of Bioscience and Biotechnology, Sejong University, Gwangjin-gu, Seoul, 05006, Republic of Korea.
| | - Sarah Lee
- Strategic Planning Division, National Institute of Biological Resources, Incheon, 22689, Republic of Korea.
| | - Byong-Hee Lee
- Biological Resources Assessment Division, National Institute of Biological Resources, Incheon, 22689, Republic of Korea.
| | - Ji Heun Lee
- PharmacoBio Inc, Jungwon-gu, Seongnam, 13219, Republic of Korea.
| | - Youngwoon Ju
- PharmacoBio Inc, Jungwon-gu, Seongnam, 13219, Republic of Korea.
| | - Jongsung Lee
- Department of Integrative Biotechnology, Sungkyunkwan University, Suwon, 16419, Republic of Korea; Biomedical Institute for Convergence at SKKU (BICS), Sungkyunkwan University, Suwon, 16419, Republic of Korea; Department of Biocosmetics, Sungkyunkwan University, Suwon, 16419, Republic of Korea.
| | - Jae Youl Cho
- Department of Integrative Biotechnology, Sungkyunkwan University, Suwon, 16419, Republic of Korea; Biomedical Institute for Convergence at SKKU (BICS), Sungkyunkwan University, Suwon, 16419, Republic of Korea; Department of Biocosmetics, Sungkyunkwan University, Suwon, 16419, Republic of Korea.
| |
Collapse
|
2
|
Hayashi K, Sato K, Ochi S, Kawano S, Munesue S, Harashima A, Oshima Y, Kimura K, Kyoi T, Yamamoto Y. Inhibitory Effects of Saururus chinensis Extract on Receptor for Advanced Glycation End-Products-Dependent Inflammation and Diabetes-Induced Dysregulation of Vasodilation. Int J Mol Sci 2022; 23:ijms23105757. [PMID: 35628567 PMCID: PMC9147798 DOI: 10.3390/ijms23105757] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 05/19/2022] [Accepted: 05/19/2022] [Indexed: 02/04/2023] Open
Abstract
Advanced glycation end-products (AGEs) and the receptor for AGEs (RAGE) are implicated in inflammatory reactions and vascular complications in diabetes. Signaling pathways downstream of RAGE are involved in NF-κB activation. In this study, we examined whether ethanol extracts of Saururus chinensis (Lour.) Baill. (SE) could affect RAGE signaling and vascular relaxation in streptozotocin (STZ)-induced diabetic rats. Treatment with SE inhibited AGEs-modified bovine serum albumin (AGEs-BSA)-elicited activation of NF-κB and could compete with AGEs-BSA binding to RAGE in a dose-dependent manner. Tumor necrosis factor-α (TNF-α) secretion induced by lipopolysaccharide (LPS)-a RAGE ligand-was also reduced by SE treatment in wild-type Ager+/+ mice as well as in cultured peritoneal macrophages from Ager+/+ mice but not in Ager-/- mice. SE administration significantly ameliorated diabetes-related dysregulation of acetylcholine-mediated vascular relaxation in STZ-induced diabetic rats. These results suggest that SE would inhibit RAGE signaling and would be useful for the improvement of vascular endothelial dysfunction in diabetes.
Collapse
Affiliation(s)
- Kenjiro Hayashi
- Food Development Labs, Functional Food Division, Nippon Shinyaku Co., Ltd., Kyoto 601-8550, Japan; (K.H.); (K.S.); (S.O.); (S.K.); (T.K.)
- Department of Biochemistry and Molecular Vascular Biology, Kanazawa University Graduate School of Medical Sciences, Kanazawa 920-8640, Japan; (S.M.); (A.H.); (Y.O.); (K.K.)
| | - Koichi Sato
- Food Development Labs, Functional Food Division, Nippon Shinyaku Co., Ltd., Kyoto 601-8550, Japan; (K.H.); (K.S.); (S.O.); (S.K.); (T.K.)
| | - Seishi Ochi
- Food Development Labs, Functional Food Division, Nippon Shinyaku Co., Ltd., Kyoto 601-8550, Japan; (K.H.); (K.S.); (S.O.); (S.K.); (T.K.)
| | - Shuhei Kawano
- Food Development Labs, Functional Food Division, Nippon Shinyaku Co., Ltd., Kyoto 601-8550, Japan; (K.H.); (K.S.); (S.O.); (S.K.); (T.K.)
| | - Seiichi Munesue
- Department of Biochemistry and Molecular Vascular Biology, Kanazawa University Graduate School of Medical Sciences, Kanazawa 920-8640, Japan; (S.M.); (A.H.); (Y.O.); (K.K.)
| | - Ai Harashima
- Department of Biochemistry and Molecular Vascular Biology, Kanazawa University Graduate School of Medical Sciences, Kanazawa 920-8640, Japan; (S.M.); (A.H.); (Y.O.); (K.K.)
| | - Yu Oshima
- Department of Biochemistry and Molecular Vascular Biology, Kanazawa University Graduate School of Medical Sciences, Kanazawa 920-8640, Japan; (S.M.); (A.H.); (Y.O.); (K.K.)
| | - Kumi Kimura
- Department of Biochemistry and Molecular Vascular Biology, Kanazawa University Graduate School of Medical Sciences, Kanazawa 920-8640, Japan; (S.M.); (A.H.); (Y.O.); (K.K.)
| | - Takashi Kyoi
- Food Development Labs, Functional Food Division, Nippon Shinyaku Co., Ltd., Kyoto 601-8550, Japan; (K.H.); (K.S.); (S.O.); (S.K.); (T.K.)
| | - Yasuhiko Yamamoto
- Department of Biochemistry and Molecular Vascular Biology, Kanazawa University Graduate School of Medical Sciences, Kanazawa 920-8640, Japan; (S.M.); (A.H.); (Y.O.); (K.K.)
- Correspondence:
| |
Collapse
|
3
|
Anti-Gastritis and Anti-Lung Injury Effects of Pine Tree Ethanol Extract Targeting Both NF-κB and AP-1 Pathways. Molecules 2021; 26:molecules26206275. [PMID: 34684856 PMCID: PMC8538959 DOI: 10.3390/molecules26206275] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2021] [Revised: 10/03/2021] [Accepted: 10/13/2021] [Indexed: 02/07/2023] Open
Abstract
An ethanol extract (Pd-EE) of Pinus densiflora Siebold and Zucc was derived from the branches of pine trees. According to the Donguibogam, pine resin has the effects of lowering the fever, reducing pain, and killing worms. The purpose of this study is to investigate whether Pd-EE has anti-inflammatory effects. During in vitro trials, NO production, as well as changes in the mRNA levels of inflammation-related genes and the phosphorylation levels of related proteins, were confirmed in RAW264.7 cells activated with lipopolysaccharide depending on the presence or absence of Pd-EE treatment. The activities of transcription factors were checked in HEK293T cells transfected with adapter molecules in the inflammatory pathway. The anti-inflammatory efficacy of Pd-EE was also estimated in vivo with acute gastritis and acute lung injury models. LC-MS analysis was conducted to identify the components of Pd-EE. This extract reduced the production of NO and the mRNA expression levels of iNOS, COX-2, and IL-6 in RAW264.7 cells. In addition, protein expression levels of p50 and p65 and phosphorylation levels of FRA1 were decreased. In the luciferase assay, the activities of NF-κB and AP-1 were lowered. In acute gastritis and acute lung injury models, Pd-EE suppressed inflammation, resulting in alleviated damage.
Collapse
|