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Ming GX, Liu JY, Wu YH, Li LY, Ma XY, Liu P, Pan YP, He XN, Li YH. Strictosamide promotes wound healing through activation of the PI3K/AKT pathway. Heliyon 2024; 10:e30169. [PMID: 38699022 PMCID: PMC11064450 DOI: 10.1016/j.heliyon.2024.e30169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 04/19/2024] [Accepted: 04/22/2024] [Indexed: 05/05/2024] Open
Abstract
Nauclea officinalis, as a Chinese medicine in Hainan province, had the effect of treating lower limb ulcers, burn infections. In this paper, we studied the effect of Strictosamide (STR), the main bioactive compound in Nauclea officinals, on wound healing and explored its internal mechanism. Firstly, the wound healing potential of STR was evaluated in a rat model, demonstrating its ability to expedite wound healing, mitigate inflammatory infiltration, and enhance collagen deposition. Additionally, immunofluorescence analysis revealed that STR up-regulated the expression of CD31 and PCNA. Subsequently, target prediction, protein-protein interaction (PPI), gene ontology (GO), and pathway enrichment analyses were used to obtain potential targets, specific biological processes, and molecular mechanisms of STR for the potential treatment of wound healing. Furthermore, molecular docking was conducted to predict the binding affinity between STR and its associated targets. Additionally, in vivo and in vitro experiments confirmed that STR could increase the expression of P-PI3K, P-AKT and P-mTOR by activating the PI3K/AKT signaling pathway. In summary, this study provided a new explanation for the mechanism by which STR promotes wound healing through network pharmacology, suggesting that STR may be a new candidate for treating wound.
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Affiliation(s)
- Gu-xu Ming
- Hainan Provincial Key Laboratory R&D on Tropical Herbs, Haikou Key Laboratory of Li Nationality Medicine, School of Pharmacy, Hainan Medical University, Haikou, China
| | - Jun-yan Liu
- Hainan Provincial Key Laboratory R&D on Tropical Herbs, Haikou Key Laboratory of Li Nationality Medicine, School of Pharmacy, Hainan Medical University, Haikou, China
| | - Yu-huang Wu
- Hainan Provincial Key Laboratory R&D on Tropical Herbs, Haikou Key Laboratory of Li Nationality Medicine, School of Pharmacy, Hainan Medical University, Haikou, China
| | - Li-yan Li
- Hainan Provincial Key Laboratory R&D on Tropical Herbs, Haikou Key Laboratory of Li Nationality Medicine, School of Pharmacy, Hainan Medical University, Haikou, China
| | - Xin-yue Ma
- Hainan Provincial Key Laboratory R&D on Tropical Herbs, Haikou Key Laboratory of Li Nationality Medicine, School of Pharmacy, Hainan Medical University, Haikou, China
| | - Pei Liu
- The Second Affiliated Hospital, Hainan Medical University, Haikou, China
| | - Yi-peng Pan
- The Second Affiliated Hospital, Hainan Medical University, Haikou, China
| | - Xiao-ning He
- The Second Affiliated Hospital, Hainan Medical University, Haikou, China
| | - Yong-hui Li
- Hainan Provincial Key Laboratory R&D on Tropical Herbs, Haikou Key Laboratory of Li Nationality Medicine, School of Pharmacy, Hainan Medical University, Haikou, China
- The Second Affiliated Hospital, Hainan Medical University, Haikou, China
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Geng Q, Liu B, Fan D, Cao Z, Li L, Lu P, Lin L, Yan L, Xiong Y, He X, Lu J, Chen P, Lu C. Strictosamide ameliorates LPS-induced acute lung injury by targeting ERK2 and mediating NF-κB signaling pathway. JOURNAL OF ETHNOPHARMACOLOGY 2024; 322:117593. [PMID: 38113987 DOI: 10.1016/j.jep.2023.117593] [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: 10/12/2023] [Revised: 12/05/2023] [Accepted: 12/11/2023] [Indexed: 12/21/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Acute lung injury (ALI) ranks among the deadliest pulmonary diseases, significantly impacting mortality and morbidity. Presently, the primary treatment for ALI involves supportive therapy; however, its efficacy remains unsatisfactory. Strictosamide (STR), an indole alkaloid found in the Chinese herbal medicine Nauclea officinalis (Pierre ex Pit.) Merr. & Chun (Wutan), has been found to exhibit numerous pharmacological properties, particularly anti-inflammatory effects. AIM OF THE STUDY This study aimes to systematically identify and validate the specific binding proteins targeted by STR and elucidate its anti-inflammatory mechanism in lipopolysaccharide (LPS)-induced ALI. MATERIALS AND METHODS Biotin chemical modification, protein microarray analysis and network pharmacology were conducted to screen for potential STR-binding proteins. The binding affinity was assessed through surface plasmon resonance (SPR), cellular thermal shift assay (CETSA) and molecular docking, and the anti-inflammatory mechanism of STR in ALI treatment was assessed through in vivo and in vitro experiments. RESULTS Biotin chemical modification, protein microarray and network pharmacology identified extracellular-signal-regulated kinase 2 (ERK2) as the most important binding proteins among 276 candidate STR-interacting proteins and nuclear factor-kappaB (NF-κB) pathway was one of the main inflammatory signal transduction pathways. Using SPR, CETSA, and molecular docking, we confirmed STR's affinity for ERK2. In vitro and in vivo experiments demonstrated that STR mitigated inflammation by targeting ERK2 to modulate the NF-κB signaling pathway in LPS-induced ALI. CONCLUSIONS Our findings indicate that STR can inhibit the NF-κB signaling pathway to attenuate LPS-induced inflammation by targeting ERK2 and decreasing phosphorylation of ERK2, which could be a novel strategy for treating ALI.
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Affiliation(s)
- Qi Geng
- Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences, Beijing, 100700, PR China
| | - Bin Liu
- Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences, Beijing, 100700, PR China
| | - Danping Fan
- Experimental Research Center, China Academy of Chinese Medical Sciences, Beijing, 100700, PR China; Beijing Key Laboratory of Traditional Chinese Medicine Basic Research on Prevention and Treatment for Major Diseases, Beijing, 100700, PR China
| | - Zhiwen Cao
- Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences, Beijing, 100700, PR China
| | - Li Li
- Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences, Beijing, 100700, PR China
| | - Peipei Lu
- Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences, Beijing, 100700, PR China
| | - Lin Lin
- Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences, Beijing, 100700, PR China
| | - Lan Yan
- Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences, Beijing, 100700, PR China
| | - Yibai Xiong
- Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences, Beijing, 100700, PR China
| | - Xiaojuan He
- Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences, Beijing, 100700, PR China
| | - Jun Lu
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, PR China.
| | - Peng Chen
- Experimental Research Center, China Academy of Chinese Medical Sciences, Beijing, 100700, PR China; Beijing Key Laboratory of Traditional Chinese Medicine Basic Research on Prevention and Treatment for Major Diseases, Beijing, 100700, PR China.
| | - Cheng Lu
- Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences, Beijing, 100700, PR China.
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Xu H, Xu SC, Li LY, Wu YH, Tan YF, Chen L, Liu P, Liang CF, He XN, Li YH. Protective Effects of Danmu Extract Syrup on Acute Lung Injury Induced by Lipopolysaccharide in Mice through Endothelial Barrier Repair. Chin J Integr Med 2024; 30:243-250. [PMID: 37987961 DOI: 10.1007/s11655-023-3604-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/07/2023] [Indexed: 11/22/2023]
Abstract
OBJECTIVE To investigate the effects of Danmu Extract Syrup (DMS) on lipopolysaccharide (LPS)-induced acute lung injury (ALI) in mice and explore the mechanism. METHODS Seventy-two male Balb/C mice were randomly divided into 6 groups according to a random number table (n=12), including control (normal saline), LPS (5 mg/kg), LPS+DMS 2.5 mL/kg, LPS+DMS 5 mL/kg, LPS+DMS 10 mL/kg, and LPS+Dexamethasone (DXM, 5 mg/kg) groups. After pretreatment with DMS and DXM, the ALI mice model was induced by LPS, and the bronchoalveolar lavage fluid (BALF) were collected to determine protein concentration, cell counts and inflammatory cytokines. The lung tissues of mice were stained with hematoxylin-eosin, and the wet/dry weight ratio (W/D) of lung tissue was calculated. The levels of tumor necrosis factor-α (TNF-α), interleukin (IL)-6 and IL-1 β in BALF of mice were detected by enzyme linked immunosorbent assay. The expression levels of Claudin-5, vascular endothelial (VE)-cadherin, vascular endothelial growth factor (VEGF), phospho-protein kinase B (p-Akt) and Akt were detected by Western blot analysis. RESULTS DMS pre-treatment significantly ameliorated lung histopathological changes. Compared with the LPS group, the W/D ratio and protein contents in BALF were obviously reduced after DMS pretreatment (P<0.05 or P<0.01). The number of cells in BALF and myeloperoxidase (MPO) activity decreased significantly after DMS pretreatment (P<0.05 or P<0.01). DMS pre-treatment decreased the levels of TNF-α, IL-6 and IL-1 β (P<0.01). Meanwhile, DMS activated the phosphoinositide 3-kinase/protein kinase B (PI3K/Akt) pathway and reversed the expressions of Claudin-5, VE-cadherin and VEGF (P<0.01). CONCLUSIONS DMS attenuated LPS-induced ALI in mice through repairing endothelial barrier. It might be a potential therapeutic drug for LPS-induced lung injury.
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Affiliation(s)
- Han Xu
- Hainan Provincial Key Lab of Research & Development on Tropic Herbs, Hainan Medical University, Haikou, 571199, China
| | - Si-Cong Xu
- Hainan Provincial Key Lab of Research & Development on Tropic Herbs, Hainan Medical University, Haikou, 571199, China
| | - Li-Yan Li
- Hainan Provincial Key Lab of Research & Development on Tropic Herbs, Hainan Medical University, Haikou, 571199, China
| | - Yu-Huang Wu
- Hainan Provincial Key Lab of Research & Development on Tropic Herbs, Hainan Medical University, Haikou, 571199, China
| | - Yin-Feng Tan
- Hainan Provincial Key Lab of Research & Development on Tropic Herbs, Hainan Medical University, Haikou, 571199, China
| | - Long Chen
- Department of Stomatology, the Second Affiliated Hospital of Hainan Medical University, Haikou, 571199, China
| | - Pei Liu
- Department of Stomatology, the Second Affiliated Hospital of Hainan Medical University, Haikou, 571199, China
| | - Chang-Fu Liang
- Department of Stomatology, the Second Affiliated Hospital of Hainan Medical University, Haikou, 571199, China
| | - Xiao-Ning He
- Department of Stomatology, the Second Affiliated Hospital of Hainan Medical University, Haikou, 571199, China
| | - Yong-Hui Li
- Hainan Provincial Key Lab of Research & Development on Tropic Herbs, Hainan Medical University, Haikou, 571199, China.
- Department of Stomatology, the Second Affiliated Hospital of Hainan Medical University, Haikou, 571199, China.
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