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Caldeira GI, Gouveia LP, Serrano R, Silva OD. Hypericum Genus as a Natural Source for Biologically Active Compounds. PLANTS (BASEL, SWITZERLAND) 2022; 11:plants11192509. [PMID: 36235373 PMCID: PMC9573133 DOI: 10.3390/plants11192509] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 09/13/2022] [Accepted: 09/15/2022] [Indexed: 06/08/2023]
Abstract
Hypericum L. genus plants are distributed worldwide, with numerous species identified throughout all continents, except Antarctica. These plant species are currently used in various systems of traditional medicine to treat mild depression, wounds and burns, diarrhea, pain, fevers, and their secondary metabolites previously shown, and the in vitro and/or in vivo cytotoxic, antimicrobial, anti-inflammatory, antioxidant, antihyperglycemic, and hepatoprotective activities, as well as the acetylcholinesterase and monoamine oxidase inhibitory activities. We conducted a systematic bibliographic search according to the Cochrane Collaboration guidelines to answer the question: "What is known about plants of Hypericum genus as a source of natural products with potential clinical biological activity?" We documented 414 different natural products with confirmed in vitro/in vivo biological activities, and 58 different Hypericum plant species as sources for these natural products. Phloroglucinols, acylphloroglucinols, xanthones, and benzophenones were the main chemical classes identified. The selective cytotoxicity against tumor cells, cell protection, anti-inflammatory, antimicrobial, antidepressant, anti-Alzheimer's, and adipogenesis-inhibition biological activities are described. Acylphloroglucinols were the most frequent compounds with anticancer and cell-protection mechanisms. To date, no work has been published with a full descriptive list directly relating secondary metabolites to their species of origin, plant parts used, extraction methodologies, mechanisms of action, and biological activities.
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Peng X, Tan Q, Zhou H, Xu J, Gu Q. Discovery of phloroglucinols from Hypericum japonicum as ferroptosis inhibitors. Fitoterapia 2021; 153:104984. [PMID: 34216691 DOI: 10.1016/j.fitote.2021.104984] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 06/24/2021] [Accepted: 06/27/2021] [Indexed: 01/18/2023]
Abstract
Ferroptosis is a new type of cell death, which involves central neuronal system. Inhibition of ferroptosis is a promising strategy to prevent and treat neurological diseases. Thirteen phloroglucinols (1-13) were obtained from the whole plants of Hypericum japonicum. Of them, compounds 1-3 are new ones. Their structures were elucidated by extensive analysis of spectroscopic data and X-ray diffraction. All the isolates were evaluated for their inhibitory effect on RSL3-induced ferroptosis. Two new compounds 2-3 showed significant inhibitory effect with EC50 of 0.48 ± 0.14 μM and 0.94 ± 0.14 μM, respectively. DPPH free radical scavenging abilities of all compounds were assessed to evaluate their antioxidant effect. This work first reports the anti-ferroptosis activity of phloroglucinols.
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Affiliation(s)
- Xing Peng
- Research Center for Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, People's Republic of China
| | - Qingyun Tan
- Research Center for Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, People's Republic of China
| | - Huihao Zhou
- Research Center for Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, People's Republic of China
| | - Jun Xu
- Research Center for Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, People's Republic of China
| | - Qiong Gu
- Research Center for Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, People's Republic of China.
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Abstract
An efficient and convergent first total syntheses of (±)-japonicol B and (-)-japonicol C have been completed. The notable points of the synthetic route are Lewis-acid-catalyzed Friedel-Crafts reaction for one pot C-C and C-O bond formations resulting in construction of the tricyclic meroterpenoid skeleton, one pot Pd(OH)2/C-catalyzed isomerization/hydrogenation, and site selective sp3 C-H oxidation.
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Affiliation(s)
- Dattatraya H Dethe
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur - 208016, India
| | - Appasaheb K Nirpal
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur - 208016, India
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Antiproliferative Effects of St. John's Wort, Its Derivatives, and Other Hypericum Species in Hematologic Malignancies. Int J Mol Sci 2020; 22:ijms22010146. [PMID: 33375664 PMCID: PMC7795730 DOI: 10.3390/ijms22010146] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 12/03/2020] [Accepted: 12/24/2020] [Indexed: 12/14/2022] Open
Abstract
Hypericum is a widely present plant, and extracts of its leaves, flowers, and aerial elements have been employed for many years as therapeutic cures for depression, skin wounds, and respiratory and inflammatory disorders. Hypericum also displays an ample variety of other biological actions, such as hypotensive, analgesic, anti-infective, anti-oxidant, and spasmolytic abilities. However, recent investigations highlighted that this species could be advantageous for the cure of other pathological situations, such as trigeminal neuralgia, as well as in the treatment of cancer. This review focuses on the in vitro and in vivo antitumor effects of St. John’s Wort (Hypericum perforatum), its derivatives, and other Hypericum species in hematologic malignancies. Hypericum induces apoptosis in both myeloid and lymphoid cells. Other Hypericum targets include matrix metalloproteinase-2, vascular endothelial growth factor, and matrix metalloproteinase-9, which are mediators of cell migration and angiogenesis. Hypericum also downregulates the expression of proteins that are involved in the resistance of leukemia cells to chemotherapeutic agents. Finally, Hypericum and its derivatives appear to have photodynamic effects and are candidates for applications in tumor photodynamic therapy. Although the in vitro studies appear promising, controlled in vivo studies are necessary before we can hypothesize the introduction of Hypericum and its derivatives into clinical practice for the treatment of hematologic malignancies.
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Zhang R, Ji Y, Zhang X, Kennelly EJ, Long C. Ethnopharmacology of Hypericum species in China: A comprehensive review on ethnobotany, phytochemistry and pharmacology. JOURNAL OF ETHNOPHARMACOLOGY 2020; 254:112686. [PMID: 32101776 DOI: 10.1016/j.jep.2020.112686] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2019] [Revised: 02/18/2020] [Accepted: 02/19/2020] [Indexed: 06/10/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Hypericum species have been used traditionally as astringent, antipyretic, diuretic, antiphlogistic, analgesic, and antidepressant in Europe, America, Africa, and Asia. One of the most extensively investigated medicinal herbs, H. perforatum L. (St. John's wort), is widely used in many countries to treat mild to moderate mental depression. Hypericum species are abundant throughout China, including 30 used as ethnomedicines. There are limited publications describing the ethnobotanical uses and biological activities associated with Hypericum species in China. Some reported activities include the treatment of wounds and bruises, irregular menstruation, dysentery, hepatitis, mastitis, jaundice, hemoptysis, and epistaxis. AIM OF THE REVIEW This review aims to critically examine how Hypericum species are used ethnomedicinally in China, to see if the ethnobotanical data may be useful to help prioritize Hypericum species and certain phytochemical constituents that may be new drug leads, and consider the focus and lack of the phytopharmacological study on Hypericum species in China. MATERIALS AND METHODS Classic medicinal books and ethnomedicinal publications were reviewed for the genus Hypericum (called jin si tao in Chinese). In addition, relevant information about ethnobotany, phytochemistry, and pharmacology were from online databases including SciFinder, Science Direct, PubMed, Google Scholar, and China National Knowledge Infrastructure (CNKI). "Hypericum", "", "ethnobotany", "traditional use", "ethnomedicine", "phytochemistry", "pharmacology" and "bioactivity" were used as keywords when searching the databases. Thus, available articles from 1959 to 2019 were collected and analyzed. RESULTS Among 64 Hypericum species recorded in China, 30 have been used as ethnomedicines by 15 linguistic groups such as Dai, Dong, Han, Miao, and Mongolian people. Hypericum species in China possess traditional uses which are also mirrored in Europe, America, Africa, and other countries in Asia. However, there are some unique ethnomedicinal uses in China. For example, several Hypericum species are used as a local remedy in southwest China, and H. attenuatum Fisch. ex Choisy is used to treat cardiac disorders in northeast China. Antitumor, anti-inflammatory, antimicrobial, neuroprotective, antidepressant, hepatoprotective, cardioprotective, and antiviral activities have been reported in numerous biological studies. The main phytochemical constituents in Hypericum consist of phloroglucinols, naphthodianthrones, xanthones, flavonoids, and terpenoids. CONCLUSIONS There is a rich traditional knowledge regarding the ethnomedicinal uses of Hypericum species in China. Through phytochemical and pharmacological studies, several medicinal Hypericum from China have yielded many bioactive phytochemicals, possessing antitumor, anti-inflammatory, antimicrobial, and neuroprotective properties. Hypericum species from China are potential sources of drugs to fight cancer and other chronic diseases. Remarkably, nearly half of Hypericum species in China have rarely been studied, and their ethnomedicinal potential have not been scientifically evaluated. Thus, in vitro mechanistic studies, in vivo pharmacology, and clinical efficacy are all needed, prioritizing those studies that relate most closely with their traditional uses. In addition, a comprehensive plant-resource evaluation, quality control, and toxicology studies are needed.
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Affiliation(s)
- Ruifei Zhang
- College of Life and Environmental Sciences, Minzu University of China, Beijing, 100081, China; Key Laboratory of Ethnomedicine (Minzu University of China), Ministry of Education, Beijing, 100081, China.
| | - Yuanyuan Ji
- College of Life and Environmental Sciences, Minzu University of China, Beijing, 100081, China; Key Laboratory of Ethnomedicine (Minzu University of China), Ministry of Education, Beijing, 100081, China.
| | - Xinbo Zhang
- College of Life and Environmental Sciences, Minzu University of China, Beijing, 100081, China; Key Laboratory of Ethnomedicine (Minzu University of China), Ministry of Education, Beijing, 100081, China.
| | - Edward J Kennelly
- College of Life and Environmental Sciences, Minzu University of China, Beijing, 100081, China; Department of Biological Sciences, Lehman College, City University of New York, Bronx, NY, 10468, USA; The Graduate Center, City University of New York, 365 Fifth Ave., New York, 10016, USA.
| | - Chunlin Long
- College of Life and Environmental Sciences, Minzu University of China, Beijing, 100081, China; Key Laboratory of Ethnomedicine (Minzu University of China), Ministry of Education, Beijing, 100081, China.
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Zhu W, Qiu J, Zeng YR, Yi P, Lou HY, Jian JY, Zuo MX, Duan L, Gu W, Huang LJ, Li YM, Yuan CM, Hao XJ. Cytotoxic phenolic constituents from Hypericum japonicum. PHYTOCHEMISTRY 2019; 164:33-40. [PMID: 31071600 DOI: 10.1016/j.phytochem.2019.04.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 04/17/2019] [Accepted: 04/24/2019] [Indexed: 06/09/2023]
Abstract
Nine undescribed compounds, including five xanthone derivatives, two flavonoids, one 2-pyrone derivative, and one undescribed naturally occurring compound, along with 30 known phenolic compounds, were isolated from Hypericum japonicum. In addition, hyperjaponols A and B were identified as racemates. The structures and absolute configurations of the undescribed compounds were determined by comprehensive MS, NMR spectroscopy, and electronic circular dichroism (ECD) calculations. The cytotoxic effects of the isolated compounds on two human tumour cell lines (HEL and MDA-MB-231) were evaluated by the MTT assay. Eighteen compounds showed good inhibitory activities against the HEL cell line, with IC50 values of 3.53-18.7 μM, while nine compounds exhibited moderate cytotoxicity against the MDA-MB-231 cancer cell line, with IC50 values ranging from 4.92 to 10.75 μM. Their preliminary structure-activity relationship of the isolated compounds was also discussed.
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Affiliation(s)
- Wei Zhu
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, 550014, PR China; School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, 550025, PR China; Key Laboratory of Chemistry for Natural Products of Guizhou Province, And Chinese Academy of Sciences, Guiyang, 550014, PR China
| | - Jie Qiu
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, 550014, PR China; School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, 550025, PR China; Key Laboratory of Chemistry for Natural Products of Guizhou Province, And Chinese Academy of Sciences, Guiyang, 550014, PR China
| | - Yan-Rong Zeng
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, 550014, PR China; Key Laboratory of Chemistry for Natural Products of Guizhou Province, And Chinese Academy of Sciences, Guiyang, 550014, PR China
| | - Ping Yi
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, 550014, PR China; School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, 550025, PR China; Key Laboratory of Chemistry for Natural Products of Guizhou Province, And Chinese Academy of Sciences, Guiyang, 550014, PR China
| | - Hua-Yong Lou
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, 550014, PR China; Key Laboratory of Chemistry for Natural Products of Guizhou Province, And Chinese Academy of Sciences, Guiyang, 550014, PR China
| | - Jun-You Jian
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, 550014, PR China; School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, 550025, PR China; Key Laboratory of Chemistry for Natural Products of Guizhou Province, And Chinese Academy of Sciences, Guiyang, 550014, PR China
| | - Ming-Xing Zuo
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, 550014, PR China; School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, 550025, PR China; Key Laboratory of Chemistry for Natural Products of Guizhou Province, And Chinese Academy of Sciences, Guiyang, 550014, PR China
| | - Lian Duan
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, 550014, PR China; School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, 550025, PR China; Key Laboratory of Chemistry for Natural Products of Guizhou Province, And Chinese Academy of Sciences, Guiyang, 550014, PR China
| | - Wei Gu
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, 550014, PR China; School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, 550025, PR China; Key Laboratory of Chemistry for Natural Products of Guizhou Province, And Chinese Academy of Sciences, Guiyang, 550014, PR China
| | - Lie-Jun Huang
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, 550014, PR China; School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, 550025, PR China; Key Laboratory of Chemistry for Natural Products of Guizhou Province, And Chinese Academy of Sciences, Guiyang, 550014, PR China
| | - Yan-Mei Li
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, 550014, PR China; School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, 550025, PR China; Key Laboratory of Chemistry for Natural Products of Guizhou Province, And Chinese Academy of Sciences, Guiyang, 550014, PR China.
| | - Chun-Mao Yuan
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, 550014, PR China; School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, 550025, PR China; Key Laboratory of Chemistry for Natural Products of Guizhou Province, And Chinese Academy of Sciences, Guiyang, 550014, PR China.
| | - Xiao-Jiang Hao
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, 550014, PR China; School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, 550025, PR China; Key Laboratory of Chemistry for Natural Products of Guizhou Province, And Chinese Academy of Sciences, Guiyang, 550014, PR China; State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, PR China.
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Gong H, An J, Dong Q, Li J, Yang W, Sun W, Su Z, Zhang S. Discovery of SCY45, a Natural Small-Molecule MDM2-p53 Interaction Inhibitor. Chem Biodivers 2019; 16:e1900081. [PMID: 30989812 DOI: 10.1002/cbdv.201900081] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2019] [Accepted: 04/15/2019] [Indexed: 01/09/2023]
Abstract
The disruption of the MDM2-p53 interaction has been regarded as an attractive strategy for anticancer drug discovery. Here, the natural small-molecule SCY45 was identified as a potent MDM2-p53 interaction inhibitor based on fluorescence polarization and molecular modeling. SCY45 inhibited the MDM2-p53 interaction with an IC50 value of 4.93±0.08 μm. The structural modeling results showed that SCY45 not only had high structural similarity with nutlin-3a, a well-reported MDM2-P53 interaction inhibitor, but also bound to the p53 binding pocket of MDM2 with a binding mode similar to that of nutlin-3a. Moreover, SCY45 reduced the cell viability in cancer cells with MDM2 gene amplification. SCY45 showed the highest inhibition for SJSA-1 cells, which exhibit excessive MDM2 gene amplification, with an IC50 value of 7.54±0.29 μm, whereas SCY45 showed a weaker inhibition for 22Rv1 cells and A549 cells, which have a single copy of the MDM2 gene, with IC50 values of 18.47±0.75 μm and 31.62±1.96 μm, respectively.
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Affiliation(s)
- Haifeng Gong
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, #251 Ningda Road, Xining, 810016, P. R. China.,Medical College of Qinghai University, #16 Kunlun Road, Xining, 810001, P. R. China.,Qinghai Provincial People's Hospital, #2 Gonghe Road, Xining, 810007, P. R. China
| | - Juan An
- Medical College of Qinghai University, #16 Kunlun Road, Xining, 810001, P. R. China
| | - Qiuxia Dong
- The Fifth People's Hospital of Qinghai Province, #166 Nanshan Road, Xining 810007, P. R. China
| | - Jinxian Li
- Medical College of Qinghai University, #16 Kunlun Road, Xining, 810001, P. R. China
| | - Wei Yang
- Medical College of Qinghai University, #16 Kunlun Road, Xining, 810001, P. R. China
| | - Wei Sun
- Medical College of Qinghai University, #16 Kunlun Road, Xining, 810001, P. R. China
| | - Zhanhai Su
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, #251 Ningda Road, Xining, 810016, P. R. China.,Medical College of Qinghai University, #16 Kunlun Road, Xining, 810001, P. R. China
| | - Shoude Zhang
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, #251 Ningda Road, Xining, 810016, P. R. China.,Medical College of Qinghai University, #16 Kunlun Road, Xining, 810001, P. R. China.,School of Pharmacy, East China University of Science and Technology, #130 Meilong Road, 200237, Shanghai, P. R. China
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Zhang S, Gao Q, Li W, Zhu L, Shang Q, Feng S, Jia J, Jia Q, Shen S, Su Z. Shikonin inhibits cancer cell cycling by targeting Cdc25s. BMC Cancer 2019; 19:20. [PMID: 30616572 PMCID: PMC6323793 DOI: 10.1186/s12885-018-5220-x] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2017] [Accepted: 12/13/2018] [Indexed: 02/03/2023] Open
Abstract
BACKGROUND Shikonin, a natural naphthoquinone, is abundant in Chinese herb medicine Zicao (purple gromwell) and has a wide range of biological activities, especially for cancer. Shikonin and its analogues have been reported to induce cell-cycle arrest, but target information is still unclear. We hypothesized that shikonin, with a structure similar to that of quinone-type compounds, which are inhibitors of cell division cycle 25 (Cdc25) phosphatases, will have similar effects on Cdc25s. To test this hypothesis, the effects of shikonin on Cdc25s and cell-cycle progression were determined in this paper. METHODS The in vitro effects of shikonin and its analogues on Cdc25s were detected by fluorometric assay kit. The binding mode between shikonin and Cdc25B was modelled by molecular docking. The dephosphorylating level of cyclin-dependent kinase 1 (CDK1), a natural substrate of Cdc25B, was tested by Western blotting. The effect of shikonin on cell cycle progression was investigated by flow cytometry analysis. We also tested the anti-proliferation activity of shikonin on cancer cell lines by MTT assay. Moreover, in vivo anti-proliferation activity was tested in a mouse xenograft tumour model. RESULTS Shikonin and its analogues inhibited recombinant human Cdc25 A, B, and C phosphatase with IC50 values ranging from 2.14 ± 0.21 to 13.45 ± 1.45 μM irreversibly. The molecular modelling results showed that shikonin bound to the inhibitor binding pocket of Cdc25B with a favourable binding mode through hydrophobic interactions and hydrogen bonds. In addition, an accumulation of the tyrosine 15-phosphorylated form of CDK1 was induced by shikonin in a concentration-dependent manner in vitro and in vivo. We also confirmed that shikonin showed an anti-proliferation effect on three cancer cell lines with IC50 values ranging from 6.15 ± 0.46 to 9.56 ± 1.03 μM. Furthermore, shikonin showed a promising anti-proliferation effect on a K562 mouse xenograph tumour model. CONCLUSION In this study, we provide evidence for how shikonin induces cell cycle arrest and functions as a Cdc25s inhibitor. It shows an anti-proliferation effect both in vitro and in vivo by mediating Cdc25s.
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Affiliation(s)
- Shoude Zhang
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, 251# Ningda Road, Xining, 810016, Qinghai, China. .,Department of Pharmacy, Medical College of Qinghai University, 16# Kunlun Road, Xining, 810016, Qinghai, China.
| | - Qiang Gao
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, 251# Ningda Road, Xining, 810016, Qinghai, China
| | - Wei Li
- Qinghai Academy of Agriculture and Forestry Science, 251# Ningda Road, Xining, 810016, China
| | - Luwei Zhu
- Department of Pharmacy, Medical College of Qinghai University, 16# Kunlun Road, Xining, 810016, Qinghai, China
| | - Qianhan Shang
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, 251# Ningda Road, Xining, 810016, Qinghai, China
| | - Shuo Feng
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, 251# Ningda Road, Xining, 810016, Qinghai, China
| | - Junmei Jia
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, 251# Ningda Road, Xining, 810016, Qinghai, China
| | - Qiangqiang Jia
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, 251# Ningda Road, Xining, 810016, Qinghai, China
| | - Shuo Shen
- Qinghai Academy of Agriculture and Forestry Science, 251# Ningda Road, Xining, 810016, China
| | - Zhanhai Su
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, 251# Ningda Road, Xining, 810016, Qinghai, China. .,Department of Pharmacy, Medical College of Qinghai University, 16# Kunlun Road, Xining, 810016, Qinghai, China.
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Zhang S, Jia Q, Gao Q, Fan X, Weng Y, Su Z. Dual-Specificity Phosphatase CDC25B Was Inhibited by Natural Product HB-21 Through Covalently Binding to the Active Site. Front Chem 2018; 6:531. [PMID: 30555816 PMCID: PMC6282036 DOI: 10.3389/fchem.2018.00531] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Accepted: 10/12/2018] [Indexed: 12/14/2022] Open
Abstract
Cysteine 473, within the active site of the enzyme, Cdc25B, is catalytically essential for substrate activation. The most well-reported inhibitors of Cdc25 phosphatases, especially quinone-type inhibitors, function by inducing irreversible oxidation at this active site of cysteine. Here, we identified a natural product, HB-21, having a sesquiterpene lactone skeleton that could irreversibly bind to cys473 through the formation of a covalent bond. This compound inhibited recombinant human Cdc25B phosphatase with an IC50 value of 24.25 μM. Molecular modeling predicted that HB-21 not only covalently binds to cys473 of Cdc25B but also forms six hydrogen bonds with residues at the active site. Moreover, HB-21 can dephosphorylate cyclin-dependent kinase (CDK1), the natural substrate of Cdc25b, and inhibit cell cycle progression. In summary, HB-21 is a new type of Cdc25B inhibitor with a novel molecular mechanism.
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Affiliation(s)
- Shoude Zhang
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining, China.,Department of Pharmacy, Medical College of Qinghai University, Xining, China.,School of Pharmacy, East China University of Science and Technology, Shanghai, China
| | - Qiangqiang Jia
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining, China
| | - Qiang Gao
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining, China
| | - Xueru Fan
- Department of Pharmacy, Medical College of Qinghai University, Xining, China
| | - Yuxin Weng
- Department of Pharmacy, Medical College of Qinghai University, Xining, China
| | - Zhanhai Su
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining, China.,Department of Pharmacy, Medical College of Qinghai University, Xining, China
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Hu L, Liu Y, Wang Y, Wang Z, Huang J, Xue Y, Liu J, Liu Z, Chen Y, Zhang Y. Discovery of acylphloroglucinol-based meroterpenoid enantiomers as KSHV inhibitors from Hypericum japonicum. RSC Adv 2018; 8:24101-24109. [PMID: 35539193 PMCID: PMC9081833 DOI: 10.1039/c8ra04073g] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2018] [Accepted: 06/26/2018] [Indexed: 11/28/2022] Open
Abstract
Kaposi's sarcoma associated herpesvirus (KSHV) has gained considerable attention as a type of carcinogenic pathogen. Recent research suggests that KSHV has participated in the pathogenesis of Kaposi's sarcoma-related malignant neoplastic diseases. Viral lytic infection might be pivotal for the etiopathogenesis of KSHV-induced diseases; however, most clinical KSHV lytic replication inhibitors like ganciclovir, nelfinavir, or cidofovir do not restrain virus replication effectively enough to achieve clinical efficacy. In our continued pharmaceutical studies on Chinese herbal medicines, new acylphloroglucinol-based meroterpenoid enantiomers have been discovered from Hypericum japonicum. Most of these metabolites have potential inhibitory activities that target KSHV lytic replication. Amongst these analogues, compounds 1a and 1b possess an unreported ring system cyclopenta[b]chromene. Compounds 1a with 4a exhibit stronger inhibitory activities towards the lytic replication of KSHV in Vero cells. In addition, 1a and 4a have IC50 values of 8.30 and 4.90 μM and selectivity indexes of 23.49 and 25.70, respectively. Qualitative and quantitative SAR and molecular docking studies for acylphloroglucinol-based meroterpenoids with regard to anti-KSHV activity were conducted. An explanation for the variation in the activity and selectivity indexes was proposed in accordance with the predicted binding pose found with molecular docking to a putative target, thymidylate synthase (kTS). Compounds 1a and 4a have potential for further development and optimization of their anti-KSHV activities which could lead to new candidate drugs. New enantiomers (1a/1b–4a/4b) were discovered from Hypericum japonicum. 1a/1b possessed a novel ring system cyclopenta[b]chromene. 1a and 4a exhibited promising anti-KSHV activities. QSAR studies for enantiomers on anti-KSHV activity were conducted.![]()
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Petushkova NA, Rusanov AL, Zgoda VG, Pyatnitskiy MA, Larina OV, Nakhod KV, Luzgina NG, Lisitsa AV. Proteome of the human HaCaT keratinocytes: Identification of the oxidative stress proteins after sodium dodecyl sulpfate exposur. Mol Biol 2017. [DOI: 10.1134/s0026893317050259] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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12
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Synergistic effects of a novel lipid-soluble extract from Pinellia pedatisecta Schott and cisplatin on human cervical carcinoma cell lines through the regulation of DNA damage response signaling pathway. Oncol Lett 2017; 13:2121-2128. [PMID: 28454371 PMCID: PMC5403266 DOI: 10.3892/ol.2017.5738] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2016] [Accepted: 12/06/2016] [Indexed: 12/21/2022] Open
Abstract
Herbal medicines have been recognized as an attractive approach for cancer therapy with minimal side effects. The present study investigated the type of interaction between a novel lipid-soluble extract from Pinellia pedatisecta Schott (PE) and cisplatin (CDDP) on human cervical cancer SiHa and CaSki cell lines in vitro. The mechanism of this combination was studied using cell proliferation, invasion and apoptosis assays, and by analyzing cell cycle distribution and protein expression, with a focus on DNA damage response (DDR) activation. Equipotent combinations of PE and CDDP were determined by isobologram analysis, in order to evaluate potential synergy. The combination index for SiHa cells was 0.43, and the index for CaSki cells was 0.68, indicating synergy. Treatment with PE and CDDP combined resulted in a significantly greater inhibition of invasion in the two cells, compared with either drug alone (SiHa, P<0.01; CaSki, P<0.001). This co-treatment induced significantly more apoptosis in the two cell lines, and arrested cells at the G0/G1 phase and G2/M phase in SiHa and CaSki, respectively, with a significant decrease (P<0.01) in S phase cells in the two cell lines. Combined PE and CDDP targeting synergistically enhanced the expression of markers of DDR (phosphorylation of ataxia-telangiectasia mutated, checkpoint kinase (Chk)-1, Chk-2, and γ-H2A histone family member X) in cells. These results suggest that PE and cisplatin act synergistically in cervical cancer cells with high DDR activation. The approach presented in the present study may have important implications for the pharmacological mechanism of Pinellia pedatisecta Schott and cervical cancer therapeutic strategies.
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(±)-Japonones A and B, two pairs of new enantiomers with anti-KSHV activities from Hypericum japonicum. Sci Rep 2016; 6:27588. [PMID: 27270221 PMCID: PMC4897785 DOI: 10.1038/srep27588] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2016] [Accepted: 05/20/2016] [Indexed: 11/08/2022] Open
Abstract
Two pairs of new enantiomers with unusual 5,5-spiroketal cores, termed (±)-japonones A and B [(±)-1 and (±)-2], were obtained from Hypericum japonicum Thunb. The absolute configurations of (±)-1 and (±)-2 were characterized by extensive analyses of spectroscopic data and calculated electronic circular dichroism (ECD) spectra, the application of modified Mosher’s methods, and the assistance of quantum chemical predictions (QCP) of 13C NMR chemical shifts. Among these metabolites, (+)-1 exhibited some inhibitory activity on Kaposi’s sarcoma associated herpesvirus (KSHV). Virtual screening of (±)-1 and (±)-2 were conducted using the Surflex-Dock module in the Sybyl software, and (+)-1 exhibited ability to bind with ERK to form key interactions with residues Lys52, Pro56, Ile101, Asp165, Gly167 and Val99.
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14
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Hu L, Xue Y, Zhang J, Zhu H, Chen C, Li XN, Liu J, Wang Z, Zhang Y, Zhang Y. (±)-Japonicols A-D, Acylphloroglucinol-Based Meroterpenoid Enantiomers with Anti-KSHV Activities from Hypericum japonicum. JOURNAL OF NATURAL PRODUCTS 2016; 79:1322-1328. [PMID: 27116034 DOI: 10.1021/acs.jnatprod.5b01119] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
(±)-Japonicols A-D (1a/1b-4a/4b), four pairs of new phloroglucinol-based terpenoid enantiomers, were isolated from Hypericum japonicum. Their absolute configurations were confirmed through comparison of their experimental and calculated electronic circular dichroism spectra and single-crystal X-ray diffraction analyses. Compounds 1a/1b, 2a/2b, and 3a/3b possess 2-oxabicyclo[3.3.1]nonane, pyrano[3,2-b]pyran, and benzo[b]cyclopenta[e]oxepine ring systems, respectively. The effects of the phloroglucinols on anti-Kaposi's sarcoma-associated herpesvirus were assessed, and 2a exhibited a moderate inhibitory effect, with an EC50 value of 8.75 μM and a selectivity index of 16.06.
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Affiliation(s)
- Linzhen Hu
- Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan 430022, People's Republic of China
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology , Wuhan 430030, Hubei Province, People's Republic of China
| | - Yongbo Xue
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology , Wuhan 430030, Hubei Province, People's Republic of China
| | - Jinwen Zhang
- Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan 430030, People's Republic of China
| | - Hucheng Zhu
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology , Wuhan 430030, Hubei Province, People's Republic of China
| | - Chunmei Chen
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology , Wuhan 430030, Hubei Province, People's Republic of China
| | - Xiao-Nian Li
- Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650204, People's Republic of China
| | - Junjun Liu
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology , Wuhan 430030, Hubei Province, People's Republic of China
| | - Zhenzhen Wang
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology , Wuhan 430030, Hubei Province, People's Republic of China
| | - Yu Zhang
- Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan 430022, People's Republic of China
| | - Yonghui Zhang
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology , Wuhan 430030, Hubei Province, People's Republic of China
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15
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Hu L, Zhang Y, Zhu H, Liu J, Li H, Li XN, Sun W, Zeng J, Xue Y, Zhang Y. Filicinic Acid Based Meroterpenoids with Anti-Epstein-Barr Virus Activities from Hypericum japonicum. Org Lett 2016; 18:2272-5. [PMID: 27116597 DOI: 10.1021/acs.orglett.6b00906] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Seven filicinic acid-based meroterpenoids (1-7), possessing 6/6/11, 6/6/7/5, or 6/6/10 ring systems, were isolated from Hypericum japonicum. All of them have novel skeletons with the incorporation of sesquiterpenoid moieties to an acylated filicinic acid. Compounds 2a and 4 exhibited significant efficacy on anti-Epstein-Barr virus, with EC50 values of 0.57 and 0.49 μM, respectively. Furthermore, compounds 2a and 4 were well accommodated to the binding pocket of 2GV9 predicted by the molecular docking.
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Affiliation(s)
- Linzhen Hu
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology , Wuhan 430030, P. R. China.,Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan 430022, P. R. China
| | - Yu Zhang
- Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan 430022, P. R. China
| | - Hucheng Zhu
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology , Wuhan 430030, P. R. China
| | - Junjun Liu
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology , Wuhan 430030, P. R. China
| | - Hua Li
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology , Wuhan 430030, P. R. China
| | - Xiao-Nian Li
- Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650204, P. R. China
| | - Weiguang Sun
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology , Wuhan 430030, P. R. China
| | - Junfen Zeng
- Department of Pharmacy, Renmin Hospital of Wuhan University , Wuhan 430060, P. R. China
| | - Yongbo Xue
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology , Wuhan 430030, P. R. China
| | - Yonghui Zhang
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology , Wuhan 430030, P. R. China
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16
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Qin JJ, Wang W, Voruganti S, Wang H, Zhang WD, Zhang R. Identification of a new class of natural product MDM2 inhibitor: In vitro and in vivo anti-breast cancer activities and target validation. Oncotarget 2015; 6:2623-40. [PMID: 25739118 PMCID: PMC4413606 DOI: 10.18632/oncotarget.3098] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2014] [Accepted: 12/25/2014] [Indexed: 12/20/2022] Open
Abstract
The MDM2 oncogene has been suggested as a molecular target for treating human cancers, including breast cancer. Most MDM2 inhibitors under development are targeting the MDM2-p53 binding, and have little or no effects on cancers without functional p53, such as advanced breast cancer. The present study was designed to develop a new class of MDM2 inhibitors that exhibit anticancer activity in MDM2-dependent and p53-independent manners. The selective MDM2 inhibitors were discovered by a computational structure-based screening, yielding a lead compound, termed JapA. We further found that JapA inhibited cell growth, decreased cell proliferation, and induced G2/M phase arrest and apoptosis in breast cancer cells through an MDM2-dependent mechanism, regardless of p53 status. It also inhibited the tumor growth and lung metastasis in breast cancer xenograft models without causing any host toxicity. Furthermore, JapA directly bound to MDM2 protein and reduced MDM2 levels in cancer cells in vitro and in vivo by promoting MDM2 protein degradation and inhibiting MDM2 transcription, which is distinct from the existing MDM2 inhibitors. In conclusion, JapA represents a new class of MDM2 inhibitor that exerts its anticancer activity through directly down-regulating MDM2, and might be developed as a novel cancer therapeutic agent.
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Affiliation(s)
- Jiang-Jiang Qin
- Department of Pharmaceutical Sciences, School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, TX, USA
| | - Wei Wang
- Department of Pharmaceutical Sciences, School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, TX, USA.,Cancer Biology Center, School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, TX, USA
| | - Sukesh Voruganti
- Department of Pharmaceutical Sciences, School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, TX, USA
| | - Hui Wang
- Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, PR China
| | - Wei-Dong Zhang
- School of Pharmacy, Shanghai Jiao Tong University, Shanghai, PR China
| | - Ruiwen Zhang
- Department of Pharmaceutical Sciences, School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, TX, USA.,Cancer Biology Center, School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, TX, USA
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17
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Luo G, Zhou M, Ye Q, Mi J, Fang D, Zhang G, Luo Y. Phenolic Derivatives from Hypericum japonicum. Nat Prod Commun 2015. [DOI: 10.1177/1934578x1501001224] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Three new acylphloroglucinol glycosides, hypericumols A - C, together with fifteen known phenolic derivatives, were isolated from the total phenolic extract of Hypericum japonicum. Hypericumols A, B, and C were characterized as 4,6-dimethyl-2-methylpropanoylphloroglucinol-1- O-β-D-glucopyranoside (1), 4-methyl-2-methylpropanoylphloroglucinol-1- O-β-D-glucopyranoside (2), and (2′ S)-4,6-dimethyl-2-methylbutyrylphloroglucinol-1- O-β-D-glucopyranoside (3), respectively, on the basis of spectroscopic data interpretation and chemical degradation reaction.
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Affiliation(s)
- Guoyong Luo
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, PR China
- University of the Chinese Academy of Sciences, Beijing 100049, PR China
| | - Min Zhou
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, PR China
| | - Qi Ye
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, PR China
| | - Jun Mi
- Chengdu Nanshan Pharmaceutical Co., Ltd., Chengdu 610041, PR China
| | - Dongmei Fang
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, PR China
| | - Guolin Zhang
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, PR China
| | - Yinggang Luo
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, PR China
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18
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Zhao P, Gao D, Wang Q, Song B, Shao Q, Sun J, Ji C, Li X, Li P, Qu X. Response gene to complement 32 (RGC-32) expression on M2-polarized and tumor-associated macrophages is M-CSF-dependent and enhanced by tumor-derived IL-4. Cell Mol Immunol 2015; 12:692-9. [PMID: 25418473 PMCID: PMC4716617 DOI: 10.1038/cmi.2014.108] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2014] [Revised: 10/01/2014] [Accepted: 10/01/2014] [Indexed: 02/08/2023] Open
Abstract
Response gene to complement 32 (RGC-32) is a cell cycle regulator involved in the proliferation, differentiation and migration of cells and has also been implicated in angiogenesis. Here we show that RGC-32 expression in macrophages is induced by IL-4 and reduced by LPS, indicating a link between RGC-32 expression and M2 polarization. We demonstrated that the increased expression of RGC-32 is characteristic of alternatively activated macrophages, in which this protein suppresses the production of pro-inflammatory cytokine IL-6 and promotes the production of the anti-inflammatory mediator TGF-β. Consistent with in vitro data, tumor-associated macrophages (TAMs) express high levels of RGC-32, and this expression is induced by tumor-derived ascitic fluid in an M-CSF- and/or IL-4-dependent manner. Collectively, these results establish RGC-32 as a marker for M2 macrophage polarization and indicate that this protein is a potential target for cancer immunotherapy, targeting tumor-associated macrophages.
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Affiliation(s)
- Peng Zhao
- Institute of Basic Medical Sciences, Qilu Hospital, Shandong University, Jinan, China
- Biotherapy Center, Qingdao Central Hospital, the Second Affiliated Hospital, Qingdao University Medical College, Qingdao, China
| | - Daiqing Gao
- Biotherapy Center, Qingdao Central Hospital, the Second Affiliated Hospital, Qingdao University Medical College, Qingdao, China
| | - Qingjie Wang
- Institute of Basic Medical Sciences, Qilu Hospital, Shandong University, Jinan, China
| | - Bingfeng Song
- Institute of Basic Medical Sciences, Qilu Hospital, Shandong University, Jinan, China
| | - Qianqian Shao
- Institute of Basic Medical Sciences, Qilu Hospital, Shandong University, Jinan, China
| | - Jintang Sun
- Institute of Basic Medical Sciences, Qilu Hospital, Shandong University, Jinan, China
| | - Chunyan Ji
- Institute of Basic Medical Sciences, Qilu Hospital, Shandong University, Jinan, China
| | - Xingang Li
- Neurosurgery, Qilu Hospital of Shandong University, Jinan, China
| | - Peng Li
- Institute of Basic Medical Sciences, Qilu Hospital, Shandong University, Jinan, China
| | - Xun Qu
- Institute of Basic Medical Sciences, Qilu Hospital, Shandong University, Jinan, China
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