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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.
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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.
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Lee JW, Kim EN, Jeong GS. Anti-Inflammatory Herbal Extracts and Their Drug Discovery Perspective in Atopic Dermatitis. Biomol Ther (Seoul) 2024; 32:25-37. [PMID: 38148551 PMCID: PMC10762282 DOI: 10.4062/biomolther.2023.102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 07/28/2023] [Accepted: 08/01/2023] [Indexed: 12/28/2023] Open
Abstract
Atopic dermatitis (AD) is an allergic disorder characterized by skin inflammation. It is well known that the activation of various inflammatory cells and the generation of inflammatory molecules are closely linked to the development of AD. There is accumulating evidence demonstrating the beneficial effects of herbal extracts (HEs) on the regulation of inflammatory response in both in vitro and in vivo studies of AD. This review summarizes the anti-atopic effects of HEs and its associated underlying mechanisms, with a brief introduction of in vitro and in vivo experiment models of AD based on previous and recent studies. Thus, this review confirms the utility of HEs for AD therapy.
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Affiliation(s)
- Jae-Won Lee
- Natural Medicine Research Center, Korea Research Institute of Bioscience and Biotechnology, Cheongju 28116, Republic of Korea
| | - Eun-Nam Kim
- College of Pharmacy, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Gil-Saeng Jeong
- College of Pharmacy, Chungnam National University, Daejeon 34134, Republic of Korea
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Oh J, Cho JY, Kim D. Hyptis obtusiflora C. Presl ex Benth Methanolic Extract Exhibits Anti-Inflammatory and Anti-Gastritis Activities via Suppressing AKT/NF-κB Pathway. PLANTS (BASEL, SWITZERLAND) 2023; 12:1146. [PMID: 36904006 PMCID: PMC10005599 DOI: 10.3390/plants12051146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 02/19/2023] [Accepted: 03/01/2023] [Indexed: 06/18/2023]
Abstract
Inflammation is an indispensable part of the human body's self-defense mechanism against external stimuli. The interactions between Toll-like receptors and microbial components trigger the innate immune system via NF-κB signaling, which regulates the overall cell signaling including inflammatory responses and immune modulations. The anti-inflammatory effects of Hyptis obtusiflora C. Presl ex Benth, which has been used as a home remedy for gastrointestinal disorders and skin disease in rural areas of Latin America, have not yet been studied. Here, we investigate the medicinal properties of Hyptis obtusiflora C. Presl ex Benth methanol extract (Ho-ME) for inflammatory response suppression. Nitric oxide secretion in RAW264.7 cells triggered by TLR2, 3, or 4 agonists was reduced by Ho-ME. Reduction of inducible nitric oxide synthase (iNOS), cyclooxygenase (COX)-2, and interleukin (IL)-1b mRNA expression was observed. Decreased transcriptional activity in TRIF- and MyD88-overexpressing HEK293T cells was detected with a luciferase assay. Additionally, serially downregulated phosphorylation of kinase in the NF-κB pathway by Ho-ME was discovered in lipopolysaccharide-treated RAW264.7 cells. Together with the overexpression of its constructs, AKT was identified as a target protein of Ho-ME, and its binding domains were reaffirmed. Moreover, Ho-ME exerted gastroprotective effects in an acute gastritis mouse model generated by the administration of HCl and EtOH. In conclusion, Ho-ME downregulates inflammation via AKT targeting in the NF-κB pathway, and the combined results support Hyptis obtusiflora as a new candidate anti-inflammatory drug.
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Affiliation(s)
- Jieun Oh
- Department of Integrative Biotechnology, Biomedical Institute for Convergence at SKKU (BICS), Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Jae Youl Cho
- Department of Integrative Biotechnology, Biomedical Institute for Convergence at SKKU (BICS), Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Daewon Kim
- Laboratory of Bio-Informatics, Department of Multimedia Engineering, Dankook University, Yongin 16890, Republic of Korea
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Choi W, Lee HP, Manilack P, Saysavanh V, Lee BH, Lee S, Kim E, Cho JY. Antiallergic Effects of Callerya atropurpurea Extract In Vitro and in an In Vivo Atopic Dermatitis Model. PLANTS (BASEL, SWITZERLAND) 2023; 12:860. [PMID: 36840208 PMCID: PMC9959980 DOI: 10.3390/plants12040860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 02/09/2023] [Accepted: 02/12/2023] [Indexed: 06/18/2023]
Abstract
(1) Background: Callerya atropurpurea is found in Laos, Thailand, and Vietnam. Although the anti-inflammatory action of C. atropurpurea has been investigated, the functions of this plant in allergic responses are not understood. Here, we explored the antiallergic mechanism of C. atropurpurea ethanol extract (Ca-EE) using in vitro assays and an in vivo atopic model. (2) Methods: The constituents of Ca-EE were analyzed using GC/MS. Inhibition of lipoxygenase and β-hexosaminidase activity was examined, and the expression of inflammatory genes was measured by quantitative real-time PCR. The regulatory roles of Ca-EE in IgE/FcεRI signaling were examined by Western blotting. The DNCB-induced atopic dermatitis mouse model was performed with histological analysis. (3) Results: Ca-EE comprised cis-raphasatin, lupeol, some sugars, and fatty acids. In RBL-2H3 cells, treatment with Ca-EE significantly reduced the activities of lipoxygenase and β-hexosaminidase, as well as cytokine gene expression. IgE-mediated signaling was downregulated by blocking Lyn kinases. Moreover, Ca-EE effectively inhibited allergic symptoms in the DNCB-induced atopic dermatitis model without toxicity. (4) Conclusions: Ca-EE displayed antiallergic activities through regulating IgE/Lyn signaling in RBL-2H3 cells and a contact dermatitis model. These results indicate that Ca-EE could be effective for allergic disease treatment.
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Affiliation(s)
- Wooram Choi
- Department of Integrative Biotechnology, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Hwa Pyoung Lee
- Department of Integrative Biotechnology, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Philaxay Manilack
- Department of Forestry, Ministry of Agriculture and Forestry, Vientiane P.O. Box 811, Laos
| | - Veosavanh Saysavanh
- Department of Forestry, Ministry of Agriculture and Forestry, Vientiane P.O. Box 811, Laos
| | - Byoung-Hee Lee
- National Institute of Biological Resources, Environmental Research Complex, Incheon 22689, Republic of Korea
| | - Sarah Lee
- National Institute of Biological Resources, Environmental Research Complex, Incheon 22689, Republic of Korea
| | - Eunji Kim
- Department of Integrative Biotechnology, Sungkyunkwan University, Suwon 16419, Republic of Korea
- R&D Center, Yungjin Pharmaceutical Co., Ltd., Suwon 16229, Republic of Korea
| | - Jae Youl Cho
- Department of Integrative Biotechnology, Sungkyunkwan University, Suwon 16419, Republic of Korea
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