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Gong Q, Aoki D, Yoshida M, Fukushima K. Microscopic distribution of taxanes in freeze-fixed stems of Taxus cuspidata. Front Chem 2024; 12:1437141. [PMID: 39189021 PMCID: PMC11345223 DOI: 10.3389/fchem.2024.1437141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2024] [Accepted: 07/30/2024] [Indexed: 08/28/2024] Open
Abstract
Introduction Taxus species contain the anticancer alkaloid paclitaxel, as well as other taxanes similar in structure and potentially in effect to paclitaxel. Tissue-specific distribution patterns and seasonal variations of taxanes in some Taxus species have been reported; however, it is still under-presented for the taxanes in Taxus cuspidata. Methods The radial distributions of eight taxanes in the transverse surface of freeze-fixed T. cuspidata stems from the late summer and the spring seasons were investigated by cryo-time-of-flight secondary ion mass spectrometry and scanning electron microscopy (cryo-TOF-SIMS/SEM) visualization and liquid chromatography-mass spectrometry (LC-MS) quantitative analysis. By optical microscopic observation, seasonal differences in the amounts and distribution patterns of target taxanes were further characterized in specific tissues. Results and Discussion The overall amount of taxanes was higher in the late summer than in the spring. Also, taxanes' radial distribution was generally found at higher concentration in the phloem, the cambium and lower level in the periderm, the latest-forming xylem, with different taxanes showing several patterns with distinction between seasons, which were considered related to seasonal plant physiological behaviors. In addition, the distribution of baccatin III (BAC) was investigated at the cellular level, which was regarded in specific cells suggesting its transport in the radial and axial directions in the T. cuspidata stem. Characterizing the microscopic distribution of taxanes in the T. cuspidata stem is expected to play a role in the further study of their biosynthesis and in planta behaviors.
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Affiliation(s)
| | - Dan Aoki
- Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya, Aichi, Japan
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Kim HJ, Kim SY, Bae HJ, Choi YY, An JY, Cho YE, Cho SY, Lee SJ, Lee S, Sin M, Yun YM, Lee JR, Park SJ. Anti-Inflammatory Effects of the LK5 Herbal Complex on LPS- and IL-4/IL-13-Stimulated HaCaT Cells and a DNCB-Induced Animal Model of Atopic Dermatitis in BALB/c Mice. Pharmaceutics 2023; 16:40. [PMID: 38258052 PMCID: PMC10821371 DOI: 10.3390/pharmaceutics16010040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 12/20/2023] [Accepted: 12/22/2023] [Indexed: 01/24/2024] Open
Abstract
Atopic dermatitis (AD) is a chronic inflammatory skin disease influenced by a complex interplay of genetic and environmental factors. The activation of the JAK-STAT pathway increases the expression of inflammatory cytokines such as IL-4 and IL-13, further deteriorating AD. Therefore, for the treatment of AD, the JAK-STAT pathway is emerging as a significant target, alongside inflammatory cytokines. This study investigates the potential therapeutic effects of a novel herbal complex, LK5, composed of Scutellaria baicalensis, Liriope platyphylla, Sophora flavescens, Dictammus dasycarpus, and Phellodendron schneider, known for their anti-inflammatory and immune-modulating properties. We examined the anti-inflammatory and anti-AD effects of the LK5 herbal complex in HaCaT cells stimulated by LPS and IL-4/IL-13, as well as in a mouse model of AD induced by DNCB. In HaCaT cells stimulated with LPS or IL-4/IL-13, the LK5 herbal complex demonstrated anti-inflammatory effects by inhibiting the expression of inflammatory cytokines including TNF-α, IL-6, and IL-1β, and downregulating the phosphorylation of STAT proteins. In a murine AD-like model induced by DNCB, administration of the LK5 herbal complex significantly ameliorated clinical symptoms, including dermatitis, ear thickness, and TEWL. Histological analysis revealed a reduction in epidermal thickness and mast cell infiltration. The LK5 herbal complex also inhibited pruritus induced by compound 48/80. Furthermore, the LK5 herbal complex treatment significantly decreased the levels of inflammatory cytokines such as TSLP, IL-6, and IgE in plasma and ear tissue of AD-induced mice. These findings suggest that the LK5 herbal complex may modulate the immune response and alleviate AD symptoms by inhibiting STAT pathways.
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Affiliation(s)
- Hyun-Jeong Kim
- Department of Food Biotechnology and Environmental Science, Kangwon National University, Chuncheon 24341, Republic of Korea; (H.-J.K.); (Y.-Y.C.); (J.-Y.A.); (Y.E.C.); (S.-Y.C.); (S.-J.L.)
| | - So-Yeon Kim
- Department of Food Biotechnology and Environmental Science, Kangwon National University, Chuncheon 24341, Republic of Korea; (H.-J.K.); (Y.-Y.C.); (J.-Y.A.); (Y.E.C.); (S.-Y.C.); (S.-J.L.)
| | - Ho Jung Bae
- Agriculture and Life Science Research Institute, Kangwon National University, Chuncheon 24341, Republic of Korea;
| | - Yu-Yeong Choi
- Department of Food Biotechnology and Environmental Science, Kangwon National University, Chuncheon 24341, Republic of Korea; (H.-J.K.); (Y.-Y.C.); (J.-Y.A.); (Y.E.C.); (S.-Y.C.); (S.-J.L.)
| | - Ju-Yeon An
- Department of Food Biotechnology and Environmental Science, Kangwon National University, Chuncheon 24341, Republic of Korea; (H.-J.K.); (Y.-Y.C.); (J.-Y.A.); (Y.E.C.); (S.-Y.C.); (S.-J.L.)
| | - Ye Eun Cho
- Department of Food Biotechnology and Environmental Science, Kangwon National University, Chuncheon 24341, Republic of Korea; (H.-J.K.); (Y.-Y.C.); (J.-Y.A.); (Y.E.C.); (S.-Y.C.); (S.-J.L.)
| | - So-Young Cho
- Department of Food Biotechnology and Environmental Science, Kangwon National University, Chuncheon 24341, Republic of Korea; (H.-J.K.); (Y.-Y.C.); (J.-Y.A.); (Y.E.C.); (S.-Y.C.); (S.-J.L.)
| | - Su-Jung Lee
- Department of Food Biotechnology and Environmental Science, Kangwon National University, Chuncheon 24341, Republic of Korea; (H.-J.K.); (Y.-Y.C.); (J.-Y.A.); (Y.E.C.); (S.-Y.C.); (S.-J.L.)
| | - Sanghyun Lee
- Department of Plant Science and Technology, Chung-Ang University, Anseong 17546, Republic of Korea;
| | - MinSub Sin
- LK Co., Ltd., Hwaseong 18469, Republic of Korea; (M.S.); (Y.M.Y.); (J.R.L.)
| | - Young Min Yun
- LK Co., Ltd., Hwaseong 18469, Republic of Korea; (M.S.); (Y.M.Y.); (J.R.L.)
| | - Jong Ryul Lee
- LK Co., Ltd., Hwaseong 18469, Republic of Korea; (M.S.); (Y.M.Y.); (J.R.L.)
| | - Se Jin Park
- Department of Food Biotechnology and Environmental Science, Kangwon National University, Chuncheon 24341, Republic of Korea; (H.-J.K.); (Y.-Y.C.); (J.-Y.A.); (Y.E.C.); (S.-Y.C.); (S.-J.L.)
- Agriculture and Life Science Research Institute, Kangwon National University, Chuncheon 24341, Republic of Korea;
- School of Natural Resources and Environmental Sciences, Kangwon National University, Chuncheon 24341, Republic of Korea
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