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Liu RR, Gu SZ, Zhou T, Lin LZ, Chen WC, Zhong DS, Liu TS, Yang N, Shen L, Xu SY, Lu N, Zhang Y, Gong ZL, Xu JM. [A phase I study of subcutaneous envafolimab (KN035) monotherapy in Chinese patients with advanced solid tumors]. Zhonghua Zhong Liu Za Zhi 2023; 45:898-903. [PMID: 37875426 DOI: 10.3760/cma.j.cn112152-20220530-00373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 10/26/2023]
Abstract
Objective: To evaluate the safety and antitumor activity of envafolimab monotherapy in Chinese patients with advanced solid tumors. Methods: This open-label, multicenter phase I trial included dose escalation and dose expansion phases. In the dose escalation phase, patients received subcutaneous 0.1, 0.3, 1.0, 2.5, 5.0 or 10.0 mg/kg envafolimab once weekly (QW) following a modified "3+ 3" design. The dose expansion phase was performed in the 2.5 mg/kg and 5.0 mg/kg (QW) dose cohorts. Results: At November 25, 2019, a total of 287 patients received envafolimab treatment. During the dose escalation phase, no dose-limiting toxicities (DLT) was observed. In all dose cohorts, drug-related treatment-emergent adverse events (TEAEs) for all grades occurred in 75.3% of patients, and grade 3 or 4 occurred in 20.6% of patients. The incidence of immune-related adverse reactions (irAE) was 24.0% for all grades, the most common irAEs (≥2%) included hypothyroidism, hyperthyroidism, immune-associated hepatitis and rash. The incidence of injection site reactions was low (3.8%), all of which were grades 1-2. Among the 216 efficacy evaluable patients, the objective response rate (ORR) and disease control rate (DCR) were 11.6% and 43.1%, respectively. Median duration of response was 49.1 weeks (95% CI: 24.0, 49.3). Pharmacokinetic (PK) exposure to envafolimab is proportional to dose and median time to maximum plasma concentration is 72-120 hours based on the PK results from the dose escalation phase of the study. Conclusion: Subcutaneous envafolimab has a favorable safety and promising preliminary anti-tumor activity in Chinese patients with advanced solid tumors.
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Affiliation(s)
- R R Liu
- Department of Medical Oncology, Senior Department of Oncology, the Fifth Medical Center of PLA General Hospital, Beijing 100071, China
| | - S Z Gu
- Department of Interventional Radiology, Hunan Cancer Hospital, Changsha 410031, China
| | - T Zhou
- Department of Urology, Changhai Hospital of Shanghai, Shanghai 200433, China
| | - L Z Lin
- Cancer Center, the First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - W C Chen
- Department of Gastroenterology, First Affiliated Hospital to Soochow University, Suzhou 215006, China
| | - D S Zhong
- Department of Medical Oncology, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - T S Liu
- Department of Medical Oncology, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - N Yang
- Lung Cancer and Gastrointestinal Unit, Hunan Cancer Hospital, Changsha 410031, China
| | - L Shen
- Department of Gastrointestinal Oncology, Peking University Cancer Hospital, Beijing 100142, China
| | - S Y Xu
- 3D Medicines Co. Ltd, Chengdu 610036, China
| | - N Lu
- 3D Medicines Co. Ltd, Chengdu 610036, China
| | - Y Zhang
- 3D Medicines Co. Ltd, Chengdu 610036, China
| | - Z L Gong
- 3D Medicines Co. Ltd, Chengdu 610036, China
| | - J M Xu
- Department of Medical Oncology, Senior Department of Oncology, the Fifth Medical Center of PLA General Hospital, Beijing 100071, China
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Zhao L, Lin LZ, Zeng Y, Teng WK, Chen MY, Brand JJ, Zheng LL, Gan NQ, Gong YH, Li XY, Lv J, Chen T, Han BP, Song LR, Shu WS. The facilitating role of phycospheric heterotrophic bacteria in cyanobacterial phosphonate availability and Microcystis bloom maintenance. Microbiome 2023; 11:142. [PMID: 37365664 DOI: 10.1186/s40168-023-01582-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Accepted: 05/23/2023] [Indexed: 06/28/2023]
Abstract
BACKGROUND Phosphonates are the main components in the global phosphorus redox cycle. Little is known about phosphonate metabolism in freshwater ecosystems, although rapid consumption of phosphonates has been observed frequently. Cyanobacteria are often the dominant primary producers in freshwaters; yet, only a few strains of cyanobacteria encode phosphonate-degrading (C-P lyase) gene clusters. The phycosphere is defined as the microenvironment in which extensive phytoplankton and heterotrophic bacteria interactions occur. It has been demonstrated that phytoplankton may recruit phycospheric bacteria based on their own needs. Therefore, the establishment of a phycospheric community rich in phosphonate-degrading-bacteria likely facilitates cyanobacterial proliferation, especially in waters with scarce phosphorus. We characterized the distribution of heterotrophic phosphonate-degrading bacteria in field Microcystis bloom samples and in laboratory cyanobacteria "phycospheres" by qPCR and metagenomic analyses. The role of phosphonate-degrading phycospheric bacteria in cyanobacterial proliferation was determined through coculturing of heterotrophic bacteria with an axenic Microcystis aeruginosa strain and by metatranscriptomic analysis using field Microcystis aggregate samples. RESULTS Abundant bacteria that carry C-P lyase clusters were identified in plankton samples from freshwater Lakes Dianchi and Taihu during Microcystis bloom periods. Metagenomic analysis of 162 non-axenic laboratory strains of cyanobacteria (consortia cultures containing heterotrophic bacteria) showed that 20% (128/647) of high-quality bins from eighty of these consortia encode intact C-P lyase clusters, with an abundance ranging up to nearly 13%. Phycospheric bacterial phosphonate catabolism genes were expressed continually across bloom seasons, as demonstrated through metatranscriptomic analysis using sixteen field Microcystis aggregate samples. Coculturing experiments revealed that although Microcystis cultures did not catabolize methylphosphonate when axenic, they demonstrated sustained growth when cocultured with phosphonate-utilizing phycospheric bacteria in medium containing methylphosphonate as the sole source of phosphorus. CONCLUSIONS The recruitment of heterotrophic phosphonate-degrading phycospheric bacteria by cyanobacteria is a hedge against phosphorus scarcity by facilitating phosphonate availability. Cyanobacterial consortia are likely primary contributors to aquatic phosphonate mineralization, thereby facilitating sustained cyanobacterial growth, and even bloom maintenance, in phosphate-deficient waters. Video Abstract.
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Affiliation(s)
- Liang Zhao
- Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631, People's Republic of China
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, People's Republic of China
| | - Li-Zhou Lin
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, People's Republic of China
- Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, 510070, People's Republic of China
| | - Ying Zeng
- Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631, People's Republic of China
| | - Wen-Kai Teng
- State Key Laboratory of Biocontrol, Guangdong Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, People's Republic of China
| | - Meng-Yun Chen
- Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631, People's Republic of China
| | - Jerry J Brand
- Department of Molecular Biosciences and the Culture Collection of Algae, University of Texas at Austin, Austin, TX, 78712, USA
| | - Ling-Ling Zheng
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, People's Republic of China
- National Aquatic Biological Resource Center, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, People's Republic of China
| | - Nan-Qin Gan
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, People's Republic of China
| | - Yong-Hui Gong
- Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631, People's Republic of China
| | - Xin-Yi Li
- Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631, People's Republic of China
| | - Jin Lv
- Analysis and Testing Center, South China Normal University, Guangzhou, 510631, People's Republic of China
| | - Ting Chen
- Institute for Artificial Intelligence and Department of Computer Science and Technology, Tsinghua University, Beijing, 100084, People's Republic of China
| | - Bo-Ping Han
- Department of Ecology and Institute of Hydrobiology, Jinan University, Guangzhou, 510632, People's Republic of China.
| | - Li-Rong Song
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, People's Republic of China.
- National Aquatic Biological Resource Center, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, People's Republic of China.
| | - Wen-Sheng Shu
- Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631, People's Republic of China.
- Guangdong Magigene Biotechnology Co., Ltd., Shenzhen, 518081, People's Republic of China.
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Zhang L, Wang YS, Lin LZ, Yu YF, Lu S. [Chinese multidisciplinary expert consensus on the management of adverse drug reactions associated with savolitinib]. Zhonghua Zhong Liu Za Zhi 2023; 45:298-312. [PMID: 37078211 DOI: 10.3760/cma.j.cn112152-20221226-00853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 04/21/2023]
Abstract
MET gene is a proto-oncogene, which encodes MET protein with tyrosine kinase activity. After binding to its ligand, hepatocyte growth factor, MET protein can induce MET dimerization and activate downstream signaling pathways, which plays a crucial role in tumor formation and metastasis. Savolitinib, as a specific tyrosine kinase inhibitor (TKI) targeting MET, selectively inhibits the phosphorylation of MET kinase with a significant inhibitory effect on tumors with MET abnormalities. Based on its significant efficacy shown in the registration studies, savolitinib was approved for marketing in China on June 22, 2021 for the treatment of advanced non-small cell lung cancer with MET 14 exon skipping mutations. In addition, many studies have shown that MET TKIs are equally effective in patients with advanced solid tumors with MET gene amplification or MET protein overexpression, and relevant registration clinical studies are ongoing. The most common adverse reactions during treatment with savolitinib include nausea, vomiting, peripheral edema, pyrexia, and hepatotoxicity. Based on two rounds of extensive nationwide investigations to guide clinicians, the consensus is compiled to use savolitinib rationally, prevent and treat various adverse reactions scientifically, and improve the clinical benefits and quality of life of patients. This consensus was prepared under the guidance of multidisciplinary experts, especially including the whole-process participation and valuable suggestions of experts in Traditional Chinese Medicine, thus reflecting the clinical treatment concept of integrated Chinese and western medicines.
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Affiliation(s)
- L Zhang
- Department of Respiratory, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing 100005, China
| | - Y S Wang
- Department of Oncology, West China Hospital, Sichuan University, Chengdu 610044, China
| | - L Z Lin
- Department of Oncology, the First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Y F Yu
- Department of Oncology, Shanghai Chest Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200030, China
| | - S Lu
- Department of Oncology, Shanghai Chest Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200030, China
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Chen JM, Fang JG, Zhong YS, Lin LZ, Hou HZ, Ma L, Feng SZ, He Q, Shi M, Lian R, Wang XX, Shen X. [Risk factors for recurrence and survival analysis in locally advanced T4a papillary thyroid carcinoma after R0 resection]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2022; 57:1044-1051. [PMID: 36177557 DOI: 10.3760/cma.j.cn115330-20220427-00228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Objective: To investigate the treatment outcomes and risk factors of postoperative recurrence in T4a papillary thyroid carcinoma (PTC). Methods: A total of 185 patients with locally advanced T4a PTC treated in Beijing Tongren Hospital, Capital Medical University from January 2006 to December 2019 were retrospectively analyzed, including 127 females and 58 males, aged between 18 and 80 years, with 74 patients aged over 55 years. According to AJCC thyroid tumor staging, 111 cases were stage I (T4aN0M0 26 cases, T4aN1aM0 35 cases, and T4aN1bM0 50 cases) and 74 cases were stage Ⅲ (T4aN0M0 29 cases, T4aN1aM0 19 cases, and T4aN1bM0 26 cases). Kaplan-Meier method was used to calculate the overall survival and the recurrence-free rate, and univariate and multivariate logistic regression analyses on the clinical data were performed. Results: Recurrent laryngeal nerve invasion was observed in 150 cases, trachea invasion in 61 cases, esophagus invasion in 30 cases, and laryngeal structure invasion in 10 cases. Postoperative follow-up periods were 24-144 months, with an average of 68.29 months. Of the 185 patients, 18 (9.73%) had recurrences or metastases, including 9 cases (4.86%) died of recurrences or metastases. The 5-year and 10-year overall survival rates were respectively 95.21% and 93.10%. The 5-year and 10-year disease-free survival rates were respectively 89.65% and 86.85%. Univariate analysis showed that age of onset, tumor diameter, preoperative recurrent laryngeal nerve palsy, esophageal invasion and cervical lymph node metastasis were the risk factors for postoperative recurrence of T4a PTC(all P<0.05). Multivariate analysis showed that preoperative recurrent laryngeal nerve palsy (OR=3.27, 95%CI: 1.11-9.61, P=0.032) and lateral cervical lymph node metastasis (OR=4.71, 95%CI: 1.19-18.71, P=0.027) were independent risk factors for T4a PTC recurrence. Survival rate of patients with T4a PTC involving only the recurrent laryngeal nerve or the outer tracheal membrane was significantly better than that of patients with tracheal invasion (P<0.05). Conclusions: T4a PTC patients with R0 resection can still achieve good efficacy. Preoperative recurrent laryngeal nerve palsy and lateral cervical lymph node metastasis are independent risk factor for postoperative recurrence in the patients.
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Affiliation(s)
- J M Chen
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - J G Fang
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - Y S Zhong
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - L Z Lin
- Department of Nuclear Medicine, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - H Z Hou
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - L Ma
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - S Z Feng
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - Q He
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - M Shi
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - R Lian
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - X X Wang
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - Xixi Shen
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
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Zhao L, Lin LZ, Chen MY, Teng WK, Zheng LL, Peng L, Lv J, Brand JJ, Hu CX, Han BP, Song LR, Shu WS. The widespread capability of methylphosphonate utilization in filamentous cyanobacteria and its ecological significance. Water Res 2022; 217:118385. [PMID: 35405550 DOI: 10.1016/j.watres.2022.118385] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 03/24/2022] [Accepted: 03/29/2022] [Indexed: 06/14/2023]
Abstract
Aquatic ecosystems comprise almost half of total global methane emissions. Recent evidence indicates that a few strains of cyanobacteria, the predominant primary producers in bodies of water, can produce methane under oxic conditions with methylphosphonate serving as substrate. In this work, we have screened the published 2 568 cyanobacterial genomes for genetic elements encoding phosphonate-metabolizing enzymes. We show that phosphonate degradation (phn) gene clusters are widely distributed in filamentous cyanobacteria, including several bloom-forming genera. Algal growth experiments revealed that methylphosphonate is an alternative phosphorous source for four of five tested strains carrying phn clusters, and can sustain cellular metabolic homeostasis of strains under phosphorus stress. Liberation of methane by cyanobacteria in the presence of methylphosphonate occurred mostly during the light period of a 12 h/12 h diurnal cycle and was suppressed in the presence of orthophosphate, features that are consistent with observations in natural aquatic systems under oxic conditions. The results presented here demonstrate a genetic basis for ubiquitous methane emission via cyanobacterial methylphosphonate mineralization, while contributing to the phosphorus redox cycle.
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Affiliation(s)
- Liang Zhao
- Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou 510631, China; State Key Laboratory of Freshwater Ecology and Biotechnology, Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Science, Wuhan 430072, China
| | - Li-Zhou Lin
- State Key Laboratory of Freshwater Ecology and Biotechnology, Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Science, Wuhan 430072, China; Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, China
| | - Meng-Yun Chen
- Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou 510631, China
| | - Wen-Kai Teng
- State Key Laboratory of Biocontrol, Guangdong Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
| | - Ling-Ling Zheng
- State Key Laboratory of Freshwater Ecology and Biotechnology, Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Science, Wuhan 430072, China
| | - Liang Peng
- Department of Ecology and Institute of Hydrobiology, Jinan University, Guangzhou 510632, China
| | - Jin Lv
- Analysis and Testing Center, South China Normal University, Guangzhou 510631, China
| | - Jerry J Brand
- Department of Molecular Biosciences and the Culture Collection of Algae, University of Texas at Austin, Austin TX 78712, United States
| | - Chun-Xiang Hu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Science, Wuhan 430072, China
| | - Bo-Ping Han
- Department of Ecology and Institute of Hydrobiology, Jinan University, Guangzhou 510632, China.
| | - Li-Rong Song
- State Key Laboratory of Freshwater Ecology and Biotechnology, Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Science, Wuhan 430072, China.
| | - Wen-Sheng Shu
- Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou 510631, China.
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Wang J, Ma YL, Zhang WY, Ma J, Li ZQ, Zhang RR, Wang L, Pan SF, Zhu ZB, Yang X, Li ZL, Lin LZ, Li YF. [Investigation of risk behaviors on AIDS between foreign female sex workers in Yunnan border, 2015]. Zhonghua Yu Fang Yi Xue Za Zhi 2018; 52:1293-1295. [PMID: 30522234 DOI: 10.3760/cma.j.issn.0253-9624.2018.12.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Affiliation(s)
- J Wang
- STD/AIDS Prevention and Control Institute Yunnan Center for Disease Control and Prevention, Kunming 650022, China
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Ye CP, Xu G, Wang Z, Han J, Xue L, Cao FY, Zhang Q, Yang LF, Lin LZ, Chen XD. Design and synthesis of functionalized coordination polymers as recyclable heterogeneous photocatalysts. Dalton Trans 2018; 47:6470-6478. [PMID: 29691537 DOI: 10.1039/c8dt00902c] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The functionalized ligand 9,10-anthraquinone-1,4-dicarboxylate acid (H2AQDC) was designed and synthesized in order to develop metal-organic coordination polymers as heterogeneous catalysts with a photosensitizing feature. Two major considerations of the ligand design are anthraquinone moieties for photosensitizing to harvest light and carboxylate groups for polymeric coordination toward less solubility. A series of transition metal complexes based on this ligand were synthesized subsequently, namely {Co(AQDC)(H2O)3·2H2O}n (Co-AQDC), {Ni(AQDC)(H2O)3·2H2O}n (Ni-AQDC), {[Cu(AQDC)(H2O)3][Cu(AQDC)(H2O)2(DMF)]·(H2O)4}n (Cu-AQDC), {Zn1.5(AQDC)(OH)(H2O)2·H2O}n (Zn-AQDC), {Ag2(AQDC)(CH3OH)}n (Ag-AQDC). Both the ligand and its transition metal complexes are able to catalyze the visible-light driven oxidation reactions of alkynes into 1,2-diketones in air under mild conditions, in which compound Ni-AQDC demonstrates the best activity. This catalyst can be easily isolated from the reaction mixture by filtration with a trace amount of loss in solution and is ready for recycled use after simple washing and drying without any need for regeneration. Remarkably, the catalyst shows no loss of activity after five catalytic cycles and X-ray powder diffraction proves no change in the structure after five runs. This designed metal-organic coordination polymer represents an environmentally friendly, economical and recyclable photocatalyst, constituting a good candidate for photocatalytic organic syntheses in terms of green chemistry.
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Affiliation(s)
- Cai-Ping Ye
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials and Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China.
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Huang JF, Zhan T, Yu XL, He QA, Huang WJ, Lin LZ, Du YT, Pan YT. Therapeutic effect of Pleurotus eryngii cellulose on experimental fatty liver in rats. Genet Mol Res 2016; 15:15017805. [PMID: 26985922 DOI: 10.4238/gmr.15017805] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The aim of this study was to explore the therapeutic effect of Pleurotus eryngii cellulose on experimental fatty liver in rats. Rats were fed high-fat fodder to establish a rat fatty liver model, and were then fed different concentrations of Pleurotus eryngii cellulose for six weeks. Lipitor was used as a positive control. Measured levels of alanine aminotransferase (ALT), aspartate aminotransferase (AST), total cholesterol (TC), and total triglyceride (TG); the activity of malondialdehyde (MDA), superoxide dismutase (SOD), hepatic lipase (HL), and lipoprotein lipase; and liver histopathological changes. Successfully established rat fatty liver model after feeding high-fat fodder for one week. A diet of P. eryngii cellulose for six weeks significantly reduced ALT, AST, TC, and TG levels in rat serum (P < 0.01); TC and AST levels in P. eryngii cellulose high-dose group and Lipitor group were not significantly different from those of the control (P > 0.05). SOD activity increased significantly, while MDA and HL activity decreased (P < 0.05); fatty degeneration and fat accumulation both decreased in hepatic tissue. Hepatic protection of P. eryngii cellulose showed dose-related effect. P. eryngii cellulose can affect lipid metabolism, having therapeutic effects on fatty liver in rats.
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Affiliation(s)
- J F Huang
- Engineering Technological Center of Mushroom Industry, Minnan Normal University, Zhangzhou, Fujian, China
| | - T Zhan
- Engineering Technological Center of Mushroom Industry, Minnan Normal University, Zhangzhou, Fujian, China
| | - X L Yu
- Engineering Technological Center of Mushroom Industry, Minnan Normal University, Zhangzhou, Fujian, China
| | - Q A He
- Engineering Technological Center of Mushroom Industry, Minnan Normal University, Zhangzhou, Fujian, China
| | - W J Huang
- Engineering Technological Center of Mushroom Industry, Minnan Normal University, Zhangzhou, Fujian, China
| | - L Z Lin
- Engineering Technological Center of Mushroom Industry, Minnan Normal University, Zhangzhou, Fujian, China
| | - Y T Du
- Engineering Technological Center of Mushroom Industry, Minnan Normal University, Zhangzhou, Fujian, China
| | - Y T Pan
- Engineering Technological Center of Mushroom Industry, Minnan Normal University, Zhangzhou, Fujian, China
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Wu CL, Lin LZ, Lu Z, Huang YR, Zhuang JG, Zhou ZN. [The effect of hypoxic preconditioning on myocardium energy metabolism]. Zhongguo Ying Yong Sheng Li Xue Za Zhi 2001; 17:43-46. [PMID: 21171441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
AIM AND METHODS To evaluate the protective effects of hypoxic preconditioning (HPC) on myocardial energy metabolism, Langendorff-perfused hearts, exposed to HPC, were subjected to hypoxia/reoxygenation (5/10 min). 31P NMR was used to sequentially follow the time courses of high energy phosphates (HEP) contents and intracellular pH (pHi) of the rat myocardium. RESULTS The Contents of Phosphocreatine (PCr), Adenosine Triphosphate (ATP) and the PCr/Pi (inorganic phosphate) ratios decreased during 30 min hypoxia, but the reduction was slower for the HPC group compared with Control. Reoxygenation induced recovery of myocardial HEP in both groups, HPC enhanced t he recovery especially in initial stage o f reoxygenation. However, pHi change was not significant for HPC group in this experiment. CONCLUSION HPC improves the myocardial energy metabolism level during prolonged hypoxia and subsequent reoxygenation and protects myocardium against hypoxia/reoxygenation injury.
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Affiliation(s)
- C L Wu
- The Key laboratory of Eduration Ministry for Spectroscopy and Magnetic Resonance, Analytic Center, East China Normal University, Shanghai, 200062
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Lin LZ, Wu CL, Lu Z, Huang YR, Zhuang JG, Zhou ZN. [The studies on protective effects of SM against myocardial hypoxia/reoxygenation injury]. Zhongguo Ying Yong Sheng Li Xue Za Zhi 2000; 16:324-6. [PMID: 11236689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
AIM AND METHODS To assess the myocardial effects of Salvia Miltiorrhiza (SM) injection against hypoxia-reoxygenation injury, 31P NMR was used to trace the time courses of high energy phosphates (HEP) content and intracellular pH (pHi) of the isolated perfused rat hearts under hypoxia (30 min) and subsequent reoxygenation (40 min). RESULTS It was discovered that SM significantly preven-ted the decrease in the myocardial HEP content during hypoxia, enhanced the recovery of myocardial phosphocreatine (PCr), adenosine triphosphate (ATP) and the PCr/Pi (inorganic phosphate) ratios during reoxygenation, and lightened the decrease of the myocardial pHi value caused by hypoxia. CONCLUSION SM improves the myocardial energy metabolism level during prolonged hypoxia and subsequent reoxygenation and protects myocardium against hypoxia/reoxygenation injury. SM significantly attenuates acidosis during hypoxia and prevents the appearance of very acidic areas of the myocardium after reoxygenation.
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Affiliation(s)
- L Z Lin
- NMR Laboratory, Analytic Center, East China Normal University, Shanghai 200062
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11
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Lin LZ, He XG, Lindenmaier M, Nolan G, Yang J, Cleary M, Qiu SX, Cordell GA. Liquid chromatography-electrospray ionization mass spectrometry study of the flavonoids of the roots of Astragalus mongholicus and A. membranaceus. J Chromatogr A 2000; 876:87-95. [PMID: 10823504 DOI: 10.1016/s0021-9673(00)00149-7] [Citation(s) in RCA: 141] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
High-performance liquid chromatography-electrospray ionization mass spectrometry has been applied to analyze the flavonoids of Huangqi, the roots of Astragalus mongholicus and A. membranaceus. Eight flavonoids were identified as calycosin-7-O-beta-D-glucoside, calycosin-7-O-beta-D-glucoside-6"-O-malonate (2), ononin, (6aR,11aR)-3-hydroxy-9,10-dimethoxypterocarpan-3-O-bet a-D-glucoside, calycosin, (3R)-7,2'-dihydroxy-3',4'-dimethoxyisoflavan-7-O-beta-D-glucoside, formononetin-7-O-beta-D-glucoside-6"-O-malonate and formononetin by direct comparison with the isolated standards from Huangqi. The existence of (6aR,11aR)-3-hydroxy-9,10-dimethoxypterocarpan, (3R)-7,2'-dihydroxy-3',4'-dimethoxyisoflavan, astrapterocarpanglucoside-6'-O-malonate and astraisoflavanglucoside-6'-O-malonate was detected. This is the first report of flavonoid glycoside malonates in these two Astragalus species, and malonate 2 is a structurally completely identified new compound.
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Affiliation(s)
- L Z Lin
- Research Laboratory of Natural Products Chemistry, A.M. Todd Botanicals, Eugene, OR 97402, USA.
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12
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Lin LZ, He XG, Lindenmaier M, Yang J, Cleary M, Qiu SX, Cordell GA. LC-ESI-MS study of the flavonoid glycoside malonates of red clover (Trifolium pratense). J Agric Food Chem 2000; 48:354-65. [PMID: 10691640 DOI: 10.1021/jf991002+] [Citation(s) in RCA: 82] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
High-performance liquid chromatography-electrospray ionization-mass spectrometry (LC-ESI-MS) was applied to the analysis of the flavonoids and their glycoside malonates of the flowers and leaves of red clover (Trifolium pratense). Through LC-MS comparative studies on the plant extracts and their malonate-free extracts, approximately 20 flavonoid glycoside malonates were detected in the flower extract. Eight were identified as genistin 6' '-O-malonate (39), formononetin 7-O-beta-D-glucoside 6' '-O-malonate (40), biochanin A 7-O-beta-D-glucoside 6' '-O-malonate (41), trifoside 6' '-O-malonate (42), irilone 4'-O-beta-D-glucoside 6' '-O-malonate (43), pratensein 7-O-beta-D-glucoside 6' '-O-malonate (44), isoquercitrin 6' '-O-malonate (45), and 3-methylquercetin 7-O-beta-D-glucoside 6' '-O-malonate (46). About 15 other flavonoids and clovamides were proved to be present in this extract. The study also found that the flowers contained flavones as the major flavonoids, whereas the leaves had isoflavones as the major flavonoids. This is the first detection of the six malonates (39 and 42-46) in the extracts of red clover, and among them, 42, 43, and 46 are new compounds.
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Affiliation(s)
- L Z Lin
- Research Laboratory of Natural Products Chemistry, A. M. Todd Botanicals, Eugene, Oregon 97402, USA.
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13
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Lin LZ, He XG, Lindenmaier M, Yang J, Cleary M, Qiu SX, Cordell GA. LC-ESI-MS study of the flavonoid glycoside malonates of red clover (Trifolium pratense). J Agric Food Chem 2000. [PMID: 10691640 DOI: 10.1021/jf991002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
High-performance liquid chromatography-electrospray ionization-mass spectrometry (LC-ESI-MS) was applied to the analysis of the flavonoids and their glycoside malonates of the flowers and leaves of red clover (Trifolium pratense). Through LC-MS comparative studies on the plant extracts and their malonate-free extracts, approximately 20 flavonoid glycoside malonates were detected in the flower extract. Eight were identified as genistin 6' '-O-malonate (39), formononetin 7-O-beta-D-glucoside 6' '-O-malonate (40), biochanin A 7-O-beta-D-glucoside 6' '-O-malonate (41), trifoside 6' '-O-malonate (42), irilone 4'-O-beta-D-glucoside 6' '-O-malonate (43), pratensein 7-O-beta-D-glucoside 6' '-O-malonate (44), isoquercitrin 6' '-O-malonate (45), and 3-methylquercetin 7-O-beta-D-glucoside 6' '-O-malonate (46). About 15 other flavonoids and clovamides were proved to be present in this extract. The study also found that the flowers contained flavones as the major flavonoids, whereas the leaves had isoflavones as the major flavonoids. This is the first detection of the six malonates (39 and 42-46) in the extracts of red clover, and among them, 42, 43, and 46 are new compounds.
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Affiliation(s)
- L Z Lin
- Research Laboratory of Natural Products Chemistry, A. M. Todd Botanicals, Eugene, Oregon 97402, USA.
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14
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Lin LZ, Hu SF, Chu M, Chan TM, Chai H, Angerhofer CK, Pezzuto JM, Cordell GA. Phenolic aporphine-benzylisoquinoline alkaloids from Thalictrum faberi. Phytochemistry 1999; 50:829-834. [PMID: 10192967 DOI: 10.1016/s0031-9422(98)00580-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
From the roots of Thalictrum faberi, six new phenolic aporphine-benzylisoquinoline alkaloids, 3-hydroxy-6'-desmethyl-9-O-methylthalifaboramine (1), 3-hydroxythalifaboramine (2), 6'-desmethylthalifaboramine (3); 3,5'-dihydroxythalifaboramine (4), 5'-hydroxythalifaboramine (5) and 3-hydroxy-6'-desmethylthalifaboramine (6) were isolated. Their structures were established through the use of one- and two-dimensional NMR techniques. All of the tested alkaloids showed potent cytotoxic and antimalarial activities.
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Affiliation(s)
- L Z Lin
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago 60612-7231, USA
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15
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Qiu SX, Lin LZ, Cordell GA, Ramesh M, Kumar BR, Radhakrishna M, Mohan GK, Reddy BM, Rao YN, Srinivas B, Thomas NS, Rao AV. Acylated C-21 steroidal bisdesmosidic glycosides from Caraluma umbellata. Phytochemistry 1997; 46:333-40. [PMID: 9311154 DOI: 10.1016/s0031-9422(97)00237-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
From the whole plant of Caraluma umbellata, three new C-21 steroidal glycosides, named as carumbellosides III-V, were isolated and their structures elucidated by extensive spectroscopic experiments, devoid of any derivatisation, as caralumagenin 3-O-beta-D-glucopyranosyl(1-->4)-beta-D-digitalopyranoside-20-O-be ta- D-glucopyranoside, caralumagenin 3-O-beta-D-glucopyranosy(1-->4)- beta-D-digitalopyranoside-20-O-(2-O- benzoyl)-beta-D-glucopyranoside and caralumagenin 3-O-[6-O-benzoyl-beta-D-glucopyranosyl(1-->4)]-beta-D- digitalopyranoside-20-O-(2-O-benzoyl)-beta-D-glucopyranoside. The determination of the absolute configuration of the aglycone as (20 R), the conformations of the sugars and the unambiguous assignments of their NMR spectroscopic signals were achieved by a combination of 2D-NMR techniques. The isolates were devoid of significant cytotoxity in the UIC human cancer cell panel.
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Affiliation(s)
- S X Qiu
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago 60612, USA
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16
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Guinaudeau H, Böhlke M, Lin LZ, Angerhofer CK, Cordell GA. (+)-Angchibangkine, a new type of bisbenzylisoquinoline alkaloid, and other dimers from Pachygone dasycarpa. J Nat Prod 1997; 60:258-260. [PMID: 9157192 DOI: 10.1021/np960568e] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Analysis of the alkaloidal fraction of the stem bark extract of Pachygone dasycarpa (Menispermaceae) resulted in the isolation of 10 known bisbenzylisoquinolines, (+)-tetrandrine, (+)-penduline, (+)-fangchinoline, (+)-atherospermoline, (+)-N-methyl-7-O-demethylpeinamine, (+)-daphnoline, (4-)-isotrilobine (1), (+)-cocsuline (2), (+)-tricordatine (3), (+)-2'-norcocsuline, and the new alkaloid (+)-12-O-methyltricordatine (4). The last bisbenzylisoquinoline alkaloid isolated, (+)-angchibangkine (5), is the first member of this alkaloid class found to possess three diphenyl ether bridges in the 7-6',8-7', and 11-12' positions. Structure elucidation of these alkaloids and of (+)-O-methylangchibangkine (6) was achieved by analysis of spectral data. Compounds 4-6 show antiplasmodial activity against Plasmodium falciparum.
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Affiliation(s)
- H Guinaudeau
- Program for Collaborative research in the Pharmaceutical Sciences, Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Iillinois, Chicago, 60612
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17
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He XG, Lin LZ, Lian LZ. Electrospray high performance liquid chromatography-mass spectrometry in phytochemical analysis of kava (Piper methysticum) extract. Planta Med 1997; 63:70-4. [PMID: 17252331 DOI: 10.1055/s-2006-957608] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
HPLC coupled with electrospray (ES) MS was used to study a chloroform extract from kava roots ( PIPER METHYSTICUM). A total of thirteen kavalactones and flavokavains were identified. Seven major kavalactones, methysticin, dihydromethysticin, kavain, 7,8-dihydrokavain, 5,6-dehydrokavain, 5,6-dehydromethysticin and yangonin, were easily recognized in the extract by their [M + H] (+) or [M + Na] (+) ions, UV spectra, and retention times, compared with those of standard compounds. Six minor constituents were isolated as our own reference compounds. These constituents were identified by their [M + H] (+) or [M + Na] (+) ions, UV spectra and NMR data as 11 -hydroxy-12-methoxydihydrokavain, 7,8-dihydro-5-hydroxy-kavain, 11,12-dimethoxydihydrokavain, and flavokavains A, B and C. HPLC-ES-MS appears to be a suitable technique for identification of kavalactones and kavachalcones in the kava extract. The method also provides direct guidance for identification of other trace constituents from kava extracts.
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Affiliation(s)
- X G He
- Research Laboratory of Natural Products Chemistry, East Earth Herb Inc., 4091 W. 11th Avenue, Eugene, OR 97402, USA
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18
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Abstract
Two new pentacyclic diterpene polyesters, aleppicatine A and B, have been isolated from the acetone extract of the whole plant of Euphorbia aleppica, in addition to five known cycloartane-type triterpenes (24-methylenecycloartanol, cyclolaudenol cycloart-25-en-3 beta-ol-24-one, cycloart-22-en-3 beta,25-diol and cycloart-25-en-3 beta,24-diol), scopoletin, kaempferol and 4-hydroxybenzoic acid and its methyl ether. The structures of the new compounds and their hydrolysis products have been extensively characterized by high-field NMR spectroscopic methods, including 2D NMR techniques.
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Affiliation(s)
- S Oksüz
- Department of Chemistry, Faculty of Pharmacy, University of Istanbul, Turkey
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19
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Sun HD, Qiu SX, Lin LZ, Wang ZY, Lin ZW, Pengsuparp T, Pezzuto JM, Fong HH, Cordell GA, Farnsworth NR. Nigranoic acid, a triterpenoid from Schisandra sphaerandra that inhibits HIV-1 reverse transcriptase. J Nat Prod 1996; 59:525-7. [PMID: 8778243 DOI: 10.1021/np960149h] [Citation(s) in RCA: 86] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
An A ring-secocycloartene triterpenoid, nigranoic acid (3,4-secocycloarta-4(28),24-(Z)-diene-3,-26-dioic acid, (1) was isolated from the stems of Schisandra sphaerandra, a Chinese traditional medicinal plant. Its structure elucidation and unambiguous NMR spectral assignment were achieved by the combination of 1D- and 2D-NMR techniques with the aid of computer modeling. Nigranoic acid showed activity in several anti-HIV reverse transcriptase and polymerase assays.
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Affiliation(s)
- H D Sun
- Laboratory of Phytochemistry, Kunming Institute of Botany, Chinese Academy of Sciences, Yunnan, People's Republic of China
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20
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Wang Q, Zhou BN, Zhang RW, Lin YY, Lin LZ, Gil RR, Cordell GA. Cytotoxicity and NMR spectral assignments of ergolide and bigelovin. Planta Med 1996; 62:166-168. [PMID: 8657753 DOI: 10.1055/s-2006-957843] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Two potent cytotoxic sesquiterpene lactones, ergolide (1) and bigelovin (2) were isolated from Inula hupehensis I. helianthus-aquatica and their structures and NMR data were assignment unambiguously by using a combination of one-and two-dimensional NMR techniques and computer modeling calculations.
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Affiliation(s)
- Q Wang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Academia Sinica, People's Republic of China
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21
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Abstract
Two new polyoxypregnanes, designated marstenacigenins A and B, along with a known compound, dresgenin, were isolated from the mild acid hydrolysate of the ethanol extract of the stems of Marsdenia tenacissima. Their structures were deduced by a combination of 1D and 2D NMR spectroscopic techniques as 12 beta-cinnamoyl-dihydrosarcostin and 12 beta,20-dibenzoyldihydrosarcostin, respectively.
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Affiliation(s)
- S X Qiu
- Department of Medicinal Chemistry and Pharmacognosy, University of Illinois at Chicago 60612, USA
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Affiliation(s)
- G A Cordell
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago 60612, USA
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Abstract
From Salvia prionitis two new diterpenoids, de-O-ethylsalvonitin and salprionin, were isolated, and their structures and NMR data were assigned by spectral analysis and computer modelling calculations.
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Affiliation(s)
- L Z Lin
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago 60612, USA
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24
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Abstract
From Hymenocallis littoralis, one new alkaloid, named littoraline, together with 13 known lycorine alkaloids and one lignan, were isolated. The structure and NMR assignments of this new alkaloid were determined by 1D and 2D NMR techniques. Littoraline showed inhibitory activity of HIV reverse transcriptase, and lycorine and haemanthamine showed potent in vitro cytotoxicity.
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Affiliation(s)
- L Z Lin
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago 60612, USA
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25
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Abstract
From Isodon gesneroides, three new cytotoxic diterpenoids, gesneroidins A, B and C, together with one known diterpenoid, dawoensin A, were isolated, and the structure determination and unambiguous assignment of their stereochemistry and NMR spectral data were made by a combination of one-and two-dimensional NMR techniques, computer modelling calculations and X-ray analysis.
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Affiliation(s)
- H D Sun
- Laboratory of Phytochemistry, Kunming Institute of Botany, Academia Sinica, Yunnan, P.R. China
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26
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Abstract
Two new triterpenoid saponins, aster-yunnanosides F and G, were isolated from the roots of Aster-yunnanensis. Their structures were determined as oleanolic acid-28-O-beta-D-glucopyranosyl-(1-->6)-beta-D-glucopyranoside and 3-O-beta-glucopyranosyloleanolic acid-28-O-beta-D-glucopyranosyl-(1-->6)-[alpha-L-rhamnopyranosyl-(1-->2) ]- beta-D-glucopyranoside by spectral data, especially 2D NMR analysis including COSY, HETCOR, HOHAHA, and ROESY techniques, and chemical transformation.
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Affiliation(s)
- Y Shao
- Shanghai Institute of Materia Medica, Academia Sinica, China
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27
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Zhou DH, Lin LZ. [Effect of Jinshuibao capsule on the immunological function of 36 patients with advanced cancer]. Zhongguo Zhong Xi Yi Jie He Za Zhi 1995; 15:476-8. [PMID: 8580695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Jinshuibao Capsule (JSBC), produced by Jiangxi Jinshuibao pharmaceutical Company Limited, possesses the similar active principles and pharmacological activity with those of Cordyceps sinensis. The effect of JSBC on the immunological function of 36 patients with advanced cancer showed that it could restore cellular immunological function, improve quality of life, but had no significant effect on humoral immunological function. The results suggested that JSBC could be used as adjuvant drug in advanced cancer.
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Affiliation(s)
- D H Zhou
- First Affiliated Hospital, Guangzhou University of TCM
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28
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Pengsuparp T, Cai L, Constant H, Fong HH, Lin LZ, Kinghorn AD, Pezzuto JM, Cordell GA, Ingolfsdóttir K, Wagner H. Mechanistic evaluation of new plant-derived compounds that inhibit HIV-1 reverse transcriptase. J Nat Prod 1995; 58:1024-31. [PMID: 7561895 DOI: 10.1021/np50121a006] [Citation(s) in RCA: 50] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Swertifrancheside [1], a new flavonone-xanthone glucoside isolated from Swertia franchetiana, 1 beta-hydroxyaleuritolic acid 3-p-hydroxybenzoate [2], a triterpene isolated from the roots of Maprounea africana, and protolichesterinic acid [3], an aliphatic alpha-methylene-gamma-lactone isolated from the lichen Cetraria islandica, were found to be potent inhibitors of the DNA polymerase activity of human immunodeficiency virus-1 reverse transcriptase (HIV-1 RT), with 50% inhibitory doses (IC50 values) of 43, 3.7, and 24 microM, respectively. They were not cytotoxic with cultured mammalian cells. The kinetic mechanisms by which compounds 1-3 inhibited HIV-1 RT were studied as was their potential to inhibit other nucleic acid polymerases. Swertifrancheside [1] bound to DNA and was shown to be a competitive inhibitor with respect to template-primer, but a mixed-type competitive inhibitor with respect to TTP. On the other hand, 1 beta-hydroxyaleuritolic acid 3-p-hydroxybenzoate [2] and protolichesterinic acid [3] were mixed-type competitive inhibitors with respect to template-primer and noncompetitive inhibitors with respect to TTP. Therefore, the mechanism of action of 1 beta-hydroxyaleuritolic acid 3-p-hydroxybenzoate [2] and protolichesterinic acid [3] as HIV-1 RT inhibitors involves nonspecific binding to the enzyme at nonsubstrate binding sites, whereas swertifrancheside [1] inhibits enzyme activity by binding to the template-primer.
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Affiliation(s)
- T Pengsuparp
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago 60612, USA
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29
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Abstract
The EtOAc extract of the whole plant of the Argentinian species Nierembergia aristata showed significant cytotoxicity against eleven different cancer cell lines. In addition to several known compounds, bioassay-guided fractionation led to the isolation of three new cardenolides, 17-epi-11 alpha-hydroxy-6, 7-dehydrostrophanthidin-3-O-beta-boivinopyranoside[1],6, 7-dehydrostrophanthidin-3-O-beta-boivinopyranoside [2], and 6,7-dehydrostrophanthidin-3-O-beta-oleandropyranoside[3], of which the latter demonstrated activity against all the cell lines tested. To our knowledge, this is the first report of the isolation of cardiac glycosides from a species in the Solanaceae.
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Affiliation(s)
- R R Gil
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago 60612, USA
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Gil RR, Lin LZ, Cordell GA, Kumar MR, Ramesh M, Reddy BM, Mohan GK, Narasimha AV, Rao A. Anacardoside from the seeds of Semecarpus anacardium. Phytochemistry 1995; 39:405-407. [PMID: 7495534 DOI: 10.1016/0031-9422(94)00842-h] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
From the seeds of Semecarpus anacardium, a new phenolic glucoside, anacardoside, was isolated, and its structure and configuration were elucidated by a combination of NMR techniques as 1-O-beta-D-glucopyranosyl-(1-->6)-beta-D-glucopyranosyloxy-3-hydro xy-5-methylbenzene.
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Affiliation(s)
- R R Gil
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago 60612, USA
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31
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Abstract
Three new, seco-ent-kaurane diterpenoids, laxiflorins A, B and C, together with four known diterpenoids eriocalyxin B, oriodonin, and maeocrystals A and B, were isolated from the leaves of Isodon eriocalyx var. laxiflora. Their structures were assigned by a combination of one- and two-dimensional NMR techniques and computer modeling calculations. Laxiflorin C displayed weak cytotoxic activity.
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Affiliation(s)
- H D Sun
- Laboratory of Phytochemistry, Kunming Institute of Botany, Academia Sinica, Yunnan, P.R. China
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32
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Abstract
Four new triterpene saponins, asteryunnanosides A, B, C and D, have been isolated from Aster yunnanensis and their structures deduced as 2 alpha,3 beta,23-trihydroxyolean-12-en-28-oic acid-28-O-alpha-L-rhamnopyranosyl-(1-->2)-beta-D-glucopyranoside, 2 alpha,3 beta,23-trihydroxyolean-12-en-28-oic acid-28-O-beta-D-glucopyranosyl-(1-->2)-beta-D-glucopyranoside, 2 alpha,3 beta-dihydroxyolean-12-en-28-oic acid-28-O-alpha-L-rhamnopyranosyl-(1-->2)-beta-D-glucopyranoside and 2 alpha,3 beta-dihydroxyolean-12-en-28-oic acid-28-O-beta-D-glucopyranosyl-(1-->2)-beta-D-glucopyranoside, respectively, by means of spectral and chemical data.
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Affiliation(s)
- Y Shao
- Shanghai Institute of Materia Medica, Academia Sinica, People's Republic of China
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Abstract
Four novel triterpenoid saponins named asterbatanoside F, G, H and I were isolated from the roots of Aster batangensis and their structures elucidated as 3-O-beta-D-glucopyranosyl-23-O-acetyl-bayogenin-28-O-beta-D-glu cop yranosyl- (1-->6)-[alpha-L-rhamnopyranosyl-(1-->2)]-beta-D-glucopyranoside, 3-O-beta-D-glucopyranosyl-bayogenin-28-O-beta-D-glucopyranosyl-(1- ->6)-[alpha-f1p4amnopyranosyl-(1-->2)]-beta-D-glucopyranoside, 3-O-beta-D-glucopyranosyl- (1-->3)-beta-D-glucopyranosyl-bayogenin-28-O-beta-D-glucopyranosyl -(1-->6)-beta-D-glucopyranoside, and 3-O-beta-D-glucopyranosyl-(1-->3)-beta-D- glucopyranosyl-23-O-acetyl-bayogenin-28-O-beta-D-glucopyranosyl-(1 -->6)-beta-D- glucopyranoside by means of spectral data, especially NMR including COSY, HETCOR, COLOC, HOHAHA, ROESY and selective INEPT techniques, and chemical evidence.
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Affiliation(s)
- Y Shao
- Shanghai Institute of Materia Medica, Academia Sinica, China
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34
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Abstract
A new oleanane-type triterpene saponin named asteryunnanoside E and a new acetylene glycoside named asteryunnanoside I have been isolated from the roots of Aster yunnanensis, and their structures elucidated as 3-O-beta-D-glucopyranosyl-bayogenin-28-O-beta-D- glucopyranosyl-(1-->2)-beta-D-glucopyranoside and 2Z,8E-decadiene-4,6-diyn-1-O-beta-D-glucopyranos yl-(1-->2)-beta-D- glucopyranoside by means of 1D and 2D NMR techniques (COSY, HETCOR, COLOC, HOHAHA and ROESY) and chemical transformations.
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Affiliation(s)
- Y Shao
- Shanghai Institute of Materia Medica, Academia Sinica, China
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35
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Abstract
From Isodon loxothyrsa, one new diterpenoid, loxothyrin A, together with one known diterpenoid, adenolin B, from I.pleiophyllus, three known diterpenoids, coetsoidins A, B and G, and from I. adenoloma, one known diterpenoid, longikaurin F, were isolated. The structure determination of loxothyrin A, and the unambiguous NMR spectral assignments of the known compounds were made by a combination of 1D and 2D NMR techniques and computer modelling calculations. The isolates showed potent cytotoxic activities.
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Affiliation(s)
- H D Sun
- Laboratory of Phytochemistry, Kunming Institute of Botany, Academia Sinica, Yunnan Province, P.R. China
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36
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Lin LZ, Hu SF, Zaw K, Angerhofer CK, Chai H, Pezzuto JM, Cordell GA, Lin J, Zheng DM. Thalifaberidine, a cytotoxic aporphine-benzylisoquinoline alkaloid from Thalictrum faberi. J Nat Prod 1994; 57:1430-1436. [PMID: 7528786 DOI: 10.1021/np50112a013] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
From Thalictrum faberi, thalifaberidine [1], a new aporphine-benzylisoquinoline alkaloid, together with four known alkaloids, thalifaramine [2], thalifaricine [3], thalifarazine [4], and thalifaronine [5], were isolated. Thalifaberidine [1] was identified as 6',8-desmethylthalifaberine, and its 1H- and 13C-nmr data were completely assigned through the use of one- and two-dimensional nmr techniques. Thalifaberidine [1], thalifaberine [6], and thalifasine [7] showed cytotoxic activity against several human cancer cell lines, as well as antimalarial activity.
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Affiliation(s)
- L Z Lin
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago 60612
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37
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Abstract
A new diterpenoid, megathyrin A, together with three known compounds, rabdocoetsins B, C, and D, were isolated from the leaves of Isodon megathyrsus, and their structures and nmr spectral data were assigned by a combination of one- and two-dimensional nmr techniques. These compounds displayed significant cytotoxic activity.
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Affiliation(s)
- H D Sun
- Laboratory of Phytochemistry, Kunming Institute of Botany, Academia Sinica, Kunming, Yunnan, People's Republic of China
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38
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Wang JN, Hou CY, Liu YL, Lin LZ, Gil RR, Cordell GA. Swertifrancheside, an HIV-reverse transcriptase inhibitor and the first flavone-xanthone dimer, from Swertia franchetiana. J Nat Prod 1994; 57:211-7. [PMID: 7513747 DOI: 10.1021/np50104a003] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
The first flavone-xanthone C-glucoside, swertifrancheside, was isolated from Swertia franchetiana, and its structure was elucidated on the basis of spectroscopic analysis as 1,5,8-trihydroxy-3-methoxy-7-(5',7',3'',4''- tetrahydroxy-6'-C-beta-D-glucopyranosyl-4'-oxy-8'-flavyl)-xanthone . This compound was a moderately potent inhibitor of HIV reverse transcriptase.
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Affiliation(s)
- J N Wang
- Department of Phytochemistry, Institute of Medicinal Plant Development, Beijing, People's Republic of China
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39
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Abstract
Continuing studies of the alkaloidal fraction from the roots of Cyclea barbata afforded two new bisbenzylisoquinoline alkaloids, namely, (-)-2'-norlimacine [1] and (+)-cycleabarbatine [2]. The known (+)-tetrandrine-2'-beta-N-oxide [3], for which the configuration of the N-oxide function is now assigned, was identified, as were (+)-berbamine, (-)-repandine, (+)-cycleanorine, (+)-daphnandrine, (-)-curine, (+)-coclaurine, and (-)-N-methylcoclaurine.
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Affiliation(s)
- H Guinaudeau
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago 60612
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40
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Abstract
Investigation of the inner bark of Alyxia reinwardti var. lucida led to the isolation of two new coumarin glycosides, 1 and 2, whose structures were determined by interpretation of their spectroscopic data, particularly NMR spectroscopy.
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Affiliation(s)
- L J Lin
- Program for Collaborative Research in the Pharmaceutical Sciences, College of Pharmacy, University of Illinois at Chicago
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41
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Abstract
From the roots of Bupleurum wenchuanense 14 derivatives of saikosaponin were isolated and identified as 2"-O-beta-D-xylopyranosylsaikosaponin b2, 3",6"-O O-diacetylsaikosaponin b2, 2"-O-beta-D-glucopyranosylsaikosaponin b2, saikosaponin b2, 6"-O-acetylsaikosaponin b2, saikosaponin d, 2"-O-acetylsaikosaponin d, 3"-O-acetylsaikosaponin d,6"-O-acetylsaikosaponin d, 16-epichikusaikoside, prosaikogenin G, saikosaponin a,2"-O-acetylsaikosaponin a and 3"-O-acetylsaikosaponin a. The first two compounds are new derivatives of saikosaponin and this is the first isolation of prosaikogenin G from a plant. Their complete 1H and 13C NMR assignments were made by using a combination of 2D NMR techniques (DQF-COSY, HOHAHA, ROESY, HETCOR, HMQC and HMBC). Some of the compounds showed cytotoxic activity against the P-388 cell line.
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Affiliation(s)
- S Q Luo
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago
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42
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Lin LZ, Shieh HL, Angerhofer CK, Pezzuto JM, Cordell GA, Xue L, Johnson ME, Ruangrungsi N. Cytotoxic and antimalarial bisbenzylisoquinoline alkaloids from Cyclea barbata. J Nat Prod 1993; 56:22-29. [PMID: 8450318 DOI: 10.1021/np50091a004] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
An alkaloid extract derived from the roots of Cyclea barbata demonstrated cytotoxic and antimalarial activities, and five bisbenzylisoquinoline alkaloids, (+)-tetrandrine [1], (-)-limacine [2], (+)-thalrugosine [3], (+)-homoaromoline [4], and (-)-cycleapeltine [5], were isolated as the active principles. The complete and unambiguous assignments of the 1H- and 13C-nmr data of these substances were made by 1D and 2D nmr techniques (COSY, phase-sensitive ROESY, HETCOR, and FLOCK).
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Affiliation(s)
- L Z Lin
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois, Chicago 60612
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43
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Li CB, Chai CX, Xie Y, Lü Q, Chai JH, Yu H, Chen CM, Lin LZ, Wang QS, Li ZL. Expression of a partial synthetic human TNF cDNA in E. coli. Sci China B 1992; 35:319-28. [PMID: 1590916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A recombinant human tumour necrosis factor (rhTNF) cDNA was constructed. The TNF gene was isolated from a human genomic gene library. There are four exons in the TNF gene. The fourth exon codes for 140 amino acids of the TNF matured protein which is composed of 157 amino acids. A major portion of the fourth exon was isolated and then ligated to a synthesized DNA fragment coding for the remaining amino acids. The partial synthetic hTNF (rhTNF) cDNA thus generated was subcloned into a vector and successfully expressed in E. coli. 5-1 fermentator was used to produce rhTNF. About 20 g (wet weight) of bacterial pellet per liter medium and 10(6)-10(7) units of cytotoxicity to L929 cells per milliliter medium were obtained. rhTNF was purified by HPLC and dried with a freeze dryer. rhTNF with a purity of about 95% in the form of white powder was obtained. The sequence of ten amino acids at the amino terminus of the rhTNF was determined. The result showed that it was identical with that of the natural human TNF.
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Affiliation(s)
- C B Li
- State Key Laboratory of Genetic Engineering, Fudan University, Shanghai, PRC
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44
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Lin LZ, Lilienbaum A, Vicart P, Paulin D. Effets de protéines transactivatrices virales sur l'expression du gène vimentine: application pour l'établissement de lignées cellulaires. Med Sci (Paris) 1991. [DOI: 10.4267/10608/4381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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45
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Abstract
The chromosomal location of the mouse gene coding for vimentin, one of the intermediate filament subunits, was determined by in situ hybridization using specific H3-labelled DNA probes. There is only one copy of the vimentin gene and it is located on chromosome 2 region A2.
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46
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Abstract
Seven diterpenoids, 3-ketosapriparaquinone ( 1), salvilenone, 3-hydroxysalvilenone ( 2), arucadiol, royleanone, sugiol, and ferruginol were isolated from the root of SALVIA PRIONITIS Hance (Labiatae); Compounds 1 and 2 are new natural products. The structure of 1 was established through the interpretation of spectral data.
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Affiliation(s)
- L Z Lin
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, Peoples' Republic of China
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47
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Lin LZ, Wang XM, Huang XL, Huang Y, Yang BJ. [A new diterpenoid quinone dehydromiltirone]. Yao Xue Xue Bao 1988; 23:273-5. [PMID: 3176980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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48
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Lin LZ, Zhang JS, Shen JH, Zhou T, Zhang WY. [A new alkaloid--18-hydroxycamptothecin]. Yao Xue Xue Bao 1988; 23:186-8. [PMID: 3421106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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49
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Abstract
Further phytochemical investigations of the roots of THALICTRUM FABERI Ulbr. led to the isolation and identification of four another additional bisbenzylisoquinoline alkaloids: O-methylthalibrine ( 1), thaligosine ( 2), O-methylthalicberine ( 3), thalrugosidine ( 4), as well as pallidine ( 5).
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Affiliation(s)
- H Wagner
- Institut für Pharmazeutische Biologie der Universität München, Karlstr. 29, D-8000 München 2
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50
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Lin LZ, Wagner H, Seligmann O. Thalifaberine, thalifabine and huangshanine, three new dimeric aporphine-benzylisoquinoline alkaloids. Planta Med 1983; 49:55-6. [PMID: 17405013 DOI: 10.1055/s-2007-969811] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Affiliation(s)
- L Z Lin
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
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