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Jirakiattikul Y, Ruangnoo S, Sangmukdee K, Chamchusri K, Rithichai P. Enhancement of Plumbagin Production through Elicitation in In Vitro-Regenerated Shoots of Plumbago indica L. PLANTS (BASEL, SWITZERLAND) 2024; 13:1450. [PMID: 38891259 PMCID: PMC11174714 DOI: 10.3390/plants13111450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2024] [Revised: 05/19/2024] [Accepted: 05/20/2024] [Indexed: 06/21/2024]
Abstract
Plumbago indica L. contains a valuable bioactive compound called plumbagin. Elicited regenerated shoots grown in vitro could be another source of high-yielding plumbagin. The purpose of this investigation was to examine the effects of elicitor type and concentration, as well as elicitation period, on plumbagin content in in vitro-regenerated shoots of P. indica. Nodal explants were cultured on Murashige and Skoog (MS) medium containing 1 mg/L benzyladenine (BA) in combination with 0-150 mg/L yeast extract or 50-150 µM salicylic acid for four weeks. Plumbagin levels of 3.88 ± 0.38% and 3.81 ± 0.37% w/w g dry extract were achieved from the 50 and 100 mg/L yeast extract-elicited shoots, which were higher than the value obtained for the control. However, the addition of salicylic acid did not increase the plumbagin content. In the elicitation period experiment, nodal explants were cultured on MS medium supplemented with 1 mg/L BA and 50 mg/L yeast extract for durations of three, four and five weeks. The 4-week yeast extract-elicited shoot had a maximum plumbagin content of 3.22 ± 0.12% w/w g dry extract, greater than that of the control. In summary, the plumbagin content of the in vitro P. indica shoots was enhanced by 4-week elicitation using 50 mg/L yeast extract.
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Affiliation(s)
- Yaowapha Jirakiattikul
- Department of Agricultural Technology, Faculty of Science and Technology, Thammasat University, Pathum Thani 12120, Thailand; (K.S.); (K.C.); (P.R.)
| | - Srisopa Ruangnoo
- Department of Applied Thai Traditional Medicine, Faculty of Medicine, Thammasat University, Pathum Thani 12120, Thailand;
| | - Kanokwan Sangmukdee
- Department of Agricultural Technology, Faculty of Science and Technology, Thammasat University, Pathum Thani 12120, Thailand; (K.S.); (K.C.); (P.R.)
| | - Kornkanok Chamchusri
- Department of Agricultural Technology, Faculty of Science and Technology, Thammasat University, Pathum Thani 12120, Thailand; (K.S.); (K.C.); (P.R.)
| | - Panumart Rithichai
- Department of Agricultural Technology, Faculty of Science and Technology, Thammasat University, Pathum Thani 12120, Thailand; (K.S.); (K.C.); (P.R.)
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Zhang X, Gao M, Zhao X, Qi Y, Xu L, Yin L, Peng J. Purification and structural characterization of two polysaccharides with anti-inflammatory activities from Plumbago zeylanica L. Int J Biol Macromol 2024; 260:129455. [PMID: 38232876 DOI: 10.1016/j.ijbiomac.2024.129455] [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] [Received: 10/31/2023] [Revised: 01/07/2024] [Accepted: 01/11/2024] [Indexed: 01/19/2024]
Abstract
Plumbago zeylanica L., a traditional Chinese medicine, has anti-bacterial and anti-inflammatory effects, and it is critical important to explore the chemical compounds and evaluate their biological actions from the medicinal plant. However, the chemical structure and biological activities of polysaccharides from P. zeylanica. were still poorly understood. In this study, two water-soluble polysaccharides named WPZP-2-1 and WPZP-2-2 were purified from P. zeylanica L. Chemical and spectroscopic tests showed that the main chain of WPZP-2-1 was →4)-α-D-GalpA-(1 → 2)-α-L-Rhap-(1→, and the branch chain was galactose or arabinose. The main chain of WPZP-2-2 was composed of →4)-α-D-GalpA-(1 → 2)-α-L-Rhap-(1→, and the O-2 and O-3 of →4)-α-D-GalpA had a small amount of acetylation. In addition, in vitro test showed that WPZP-2-1 and WPZP-2-2 significantly improved the inflammatory damage of LPS + IFN-γ-induced THP-1 cells via reducing the protein levels of CD14, TLR4 and MyD88, thereby promoting IL-10 expression and inhibiting the mRNA levels of TNF-α and IL-1β. Those findings indicated that WPZP-2-1 and WPZP-2-2 from the plant should be served as the potential anti-inflammatory agents.
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Affiliation(s)
- Xiaohan Zhang
- Department of Pharmaceutical Analysis, College of Pharmacy, Dalian Medical University, Dalian, 116044, China
| | - Meng Gao
- Department of Pharmaceutical Analysis, College of Pharmacy, Dalian Medical University, Dalian, 116044, China
| | - Xuerong Zhao
- Department of Pharmaceutical Analysis, College of Pharmacy, Dalian Medical University, Dalian, 116044, China
| | - Yan Qi
- Department of Pharmaceutical Analysis, College of Pharmacy, Dalian Medical University, Dalian, 116044, China
| | - Linan Xu
- Department of Pharmaceutical Analysis, College of Pharmacy, Dalian Medical University, Dalian, 116044, China
| | - Lianhong Yin
- Department of Pharmaceutical Analysis, College of Pharmacy, Dalian Medical University, Dalian, 116044, China.
| | - Jinyong Peng
- Department of Pharmaceutical Analysis, College of Pharmacy, Dalian Medical University, Dalian, 116044, China; School of Pharmacy, Hubei University of Chinese Medicine, Wuhan, 430065, China.
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