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Chen W, Chen YH, Liao YC, Huang XW, Lu TJ, Shih SR. Effect of hot water extracts of Arthrospira maxima (spirulina) against respiratory syncytial virus. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2023; 110:154611. [PMID: 36580819 DOI: 10.1016/j.phymed.2022.154611] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 12/09/2022] [Accepted: 12/16/2022] [Indexed: 06/17/2023]
Abstract
BACKGROUND Spirulina (Arthrospira maxima) hot water extracts such as calcium spirulan (Ca-SP) have demonstrated antiviral effects against herpes simplex virus (HSV), human immunodeficiency virus-1 (HIV-1), and influenza virus infections. There is no prior evidence suggesting the anti-viral activity of the spirulina hot water extract against respiratory syncytial virus (RSV). PURPOSE There are currently no effective antivirals available to treat RSV infection. Therefore, the development of safe and novel anti-RSV drugs is urgent and necessary. The aim of this work was to demonstrate the anti-RSV activity of spirulina hot water extracts and determine the potential mechanism of action. METHODS Cytotoxicity and anti-RSV activity of spirulina hot water extracts were measured using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) and neutralization assays, respectively. Potential mechanisms and components were assessed using time of addition, attachment, internalization, pull-down assays, and composition analysis. RESULTS The polysaccharide-enriched high-molecular weight fraction (>100 kDa, SHD1) had a high total sugar content, with rhamnose accounting for approximately 60 mol% of total monosaccharides. The main glycosyl linkages included 3-, 4-, and 2,3-rhamnopyranosyl linkages. All spirulina hot water extracts showed no toxicity toward human epithelial type 2 (HEp-2) cells but demonstrated anti-RSV activity. The SHD1 had a half maximal effective concentration (EC50) of 0.0915 mg/ml and a selective index (SI) of >261.5 against RSV. SHD1 significantly reduced viral yield in a dose-dependent manner during the RSV attachment stage. SHD1 disrupted RSV internalization and inhibited RSV attachment (G) protein binding to heparan sulfate receptors on the host cell surface, thus preventing RSV attachment and entry. CONCLUSION SHD1 serves as an effective candidate for novel drug development against RSV infection.
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Affiliation(s)
- Wei Chen
- Graduate Institute of Biomedical Science, College of Medicine, Chang Gung University, Taoyuan, Taiwan; Research Center for Emerging Viral Infections, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Yi-Hsiang Chen
- Research Center for Emerging Viral Infections, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Ya-Chun Liao
- Research Center for Emerging Viral Infections, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Xin-Wen Huang
- Graduate Institute of Food Science and Technology, National Taiwan University, Taipei, Taiwan
| | - Ting-Jang Lu
- Graduate Institute of Food Science and Technology, National Taiwan University, Taipei, Taiwan.
| | - Shin-Ru Shih
- Research Center for Emerging Viral Infections, College of Medicine, Chang Gung University, Taoyuan, Taiwan; Department of Laboratory Medicine, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan; Department of Medical Biotechnology and Laboratory Science, College of Medicine, Chang Gung University, Taoyuan, Taiwan; Research Center for Chinese Herbal Medicine, Research Center for Food and Cosmetic Safety, and Graduate Institute of Health Industry Technology, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan, Taiwan.
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Li S, Fan G, Li X, Cai Y, Liu R. Modulation of type I interferon signaling by natural products in the treatment of immune-related diseases. Chin J Nat Med 2023; 21:3-18. [PMID: 36641230 DOI: 10.1016/s1875-5364(23)60381-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Indexed: 01/15/2023]
Abstract
Type I interferon (IFN) is considered as a bridge between innate and adaptive immunity. Proper activation or inhibition of type I IFN signaling is essential for host defense against pathogen invasion, tumor cell proliferation, and overactive immune responses. Due to intricate and diverse chemical structures, natural products and their derivatives have become an invaluable source inspiring innovative drug discovery. In addition, some natural products have been applied in clinical practice for infection, cancer, and autoimmunity over thousands of years and their promising curative effects and safety have been well-accepted. However, whether these natural products are primarily targeting type I IFN signaling and specific molecular targets involved are not fully elucidated. In the current review, we thoroughly summarize recent advances in the pharmacology researches of natural products for their type I IFN activity, including both agonism/activation and antagonism/inhibition, and their potential application as therapies. Furthermore, the source and chemical nature of natural products with type I IFN activity are highlighted and their specific molecular targets in the type I IFN pathway and mode of action are classified. In conclusion, natural products possessing type I IFN activity represent promising therapeutic strategies and have a bright prospect in the treatment of infection, cancer, and autoimmune diseases.
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Affiliation(s)
- Shuo Li
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100029, China
| | - Guifang Fan
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100029, China
| | - Xiaojiaoyang Li
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing 102488, China
| | - Yajie Cai
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100029, China
| | - Runping Liu
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100029, China.
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Cui Y, Zhang L, Hu D, Yang Y. Berberine Inhibits Herpes Simplex Virus 1 Replication in HEK293T Cells. COMPUTATIONAL AND MATHEMATICAL METHODS IN MEDICINE 2022; 2022:7137401. [PMID: 36276998 PMCID: PMC9586773 DOI: 10.1155/2022/7137401] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Accepted: 09/29/2022] [Indexed: 11/25/2022]
Abstract
Berberine exhibits polytrophic medicinal roles in various diseases and is safe and effective. However, its role and the underlying mechanism in the replication of herpes simplex virus 1 (HSV-1) remain unreported. This research aimed to determine the functional mechanisms of berberine on HSV-1 infection. We determined the CC50 (405.11 ± 15.67 μM) and IC50 (45.6 ± 6.84 μM) of berberine on HEK293T cells infected with HSV-1. Berberine inhibited the transcription and translation of HSV-1 activity-related genes (gD, ICP-4, ICP-5, and ICP-8) in HSV-1-infected HEK293T cells dose-dependently. Berberine also inhibited the phosphorylation of MAPK proteins (JNK and p38) and inflammatory responses induced by HSV-1 infection in HEK293T cells dose-dependently. In conclusion, berberine attenuates HSV-1 replication through its activity, infective ability, and inflammatory response. Our research indicated that berberine may be a candidate drug for HSV-1 infection.
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Affiliation(s)
- Yujuan Cui
- School of Life Science, Northwest Normal University, Lanzhou, Gansu 730070, China
- Beijing Yanqing Center for Diseases Prevention and Control, Beijing 102100, China
| | - Liangjun Zhang
- Beijing Yanqing Center for Diseases Prevention and Control, Beijing 102100, China
| | - Dandong Hu
- School of Life Science, Northwest Normal University, Lanzhou, Gansu 730070, China
- Beijing Yanqing Center for Diseases Prevention and Control, Beijing 102100, China
- Beijing Yanqing Market Supervision Inspection and Testing Monitoring Center, Beijing 102100, China
| | - Yingli Yang
- School of Life Science, Northwest Normal University, Lanzhou, Gansu 730070, China
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Stockert K. Synopsis. ALLERGIEPRÄVENTION 2020. [PMCID: PMC7121829 DOI: 10.1007/978-3-662-58140-7_7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Akute entzündliche Reaktionen bzw. der akute Infekt mit Restitutio ad integrum laufen in einer perfekt modulierten Kaskade ab, bei dem eine akute inflammatorische Einleitungsphase von einer antiinflammatorischen Phase und einer Entzündungsauflösungsphase abgelöst werden.
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Mathew C, Ghildyal R. CRM1 Inhibitors for Antiviral Therapy. Front Microbiol 2017; 8:1171. [PMID: 28702009 PMCID: PMC5487384 DOI: 10.3389/fmicb.2017.01171] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Accepted: 06/08/2017] [Indexed: 12/22/2022] Open
Abstract
Infectious diseases are a major global concern and despite major advancements in medical research, still cause significant morbidity and mortality. Progress in antiviral therapy is particularly hindered by appearance of mutants capable of overcoming the effects of drugs targeting viral components. Alternatively, development of drugs targeting host proteins essential for completion of viral lifecycle holds potential as a viable strategy for antiviral therapy. Nucleocytoplasmic trafficking pathways in particular are involved in several pathological conditions including cancer and viral infections, where hijacking or alteration of function of key transporter proteins, such as Chromosome Region Maintenance1 (CRM1) is observed. Overexpression of CRM1-mediated nuclear export is evident in several solid and hematological malignancies. Interestingly, CRM1-mediated nuclear export of viral components is crucial in various stages of the viral lifecycle and assembly. This review summarizes the role of CRM1 in cancer and selected viruses. Leptomycin B (LMB) is the prototypical inhibitor of CRM1 potent against various cancer cell lines overexpressing CRM1 and in limiting viral infections at nanomolar concentrations in vitro. However, the irreversible shutdown of nuclear export results in high cytotoxicity and limited efficacy in vivo. This has prompted search for synthetic and natural CRM1 inhibitors that can potentially be developed as broadly active antivirals, some of which are summarized in this review.
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Affiliation(s)
| | - Reena Ghildyal
- Respiratory Virology Group, Centre for Research in Therapeutic Solutions, Health Research Institute, University of CanberraCanberra, ACT, Australia
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Application of Traditional Chinese Medical Herbs in Prevention and Treatment of Respiratory Syncytial Virus. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2016; 2016:6082729. [PMID: 27688789 PMCID: PMC5027054 DOI: 10.1155/2016/6082729] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Accepted: 05/26/2016] [Indexed: 11/17/2022]
Abstract
Respiratory syncytial virus (RSV) is a common viral pathogen of the lower respiratory tract, which, in the absence of effective management, causes millions of cases of severe illness per year. Many of these infections develop into fatal pneumonia. In a review of English and Chinese medical literature, recent traditional Chinese medical herb- (TCMH-) based progress in the area of prevention and treatment was identified, and the potential anti-RSV compounds, herbs, and formulas were explored. Traditional Chinese medical herbs have a positive effect on inhibiting viral attachment, inhibiting viral internalization, syncytial formation, alleviation of airway inflammation, and stimulation of interferon secretion and immune system; however, the anti-RSV mechanisms of TCMHs are complicated, which should be further investigated.
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Feng Yeh C, Wang KC, Chiang LC, Shieh DE, Yen MH, San Chang J. Water extract of licorice had anti-viral activity against human respiratory syncytial virus in human respiratory tract cell lines. JOURNAL OF ETHNOPHARMACOLOGY 2013; 148:466-73. [PMID: 23643542 PMCID: PMC7126896 DOI: 10.1016/j.jep.2013.04.040] [Citation(s) in RCA: 98] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2012] [Revised: 04/11/2013] [Accepted: 04/18/2013] [Indexed: 05/24/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Licorice (Glycyrrhiza uralensis Fisch., Leguminosae) has been used in herbal medicine and food supplement worldwide for centuries. Licorice is a common ingredient of several prescriptions of traditional Chinese medicine which have been proved to inhibit infection of human respiratory syncytial virus (HRSV). There are two preparations of licorice, Radix Glycyrrhizae and Radix Glycyrrhizae Preparata. However, it is unknown whether licorice or which preparation of licorice is effective against HRSV, nor is its active constituent. AIM OF THE STUDY We tested the hypothesis that Radix Glycyrrhizae can effectively decrease HRSV-induced plaque formation in respiratory mucosal cell lines. We also tried to find out the active constituent. MATERIALS AND METHODS Anti-HRSV activities of hot water extracts of preparations of licorice, glycyrrhizin and 18β-glycyrrhetinic acid (18β-GA), the active constituents of licorice, were examined by plaque reduction assay in both human upper (HEp-2) and low (A549) respiratory tract cell lines. Abilities of crude licorice to inhibit viral replication and to stimulate IFN-β were evaluated by reverse transcription polymerase chain reaction (RT-PCR) and enzyme-linked immunosorbent assay (ELISA), respectively. RESULTS Radix Glycyrrhizae and Radix Glycyrrhizae Preparata dose-dependently inhibited HRSV-induced plaque formation in both HEp-2 and A549 cell lines (p<0.0001). The effect of Radix Glycyrrhizae was better than that of Radix Glycyrrhizae Preparata on HEp-2 cells. However, there was no difference of their anti-HRSV effects on A549 cells. Besides, glycyrrhizin was ineffective at all. Nevertheless, 18β-GA showed a potent anti-HRSV activity. Radix Glycyrrhizae was more effective when given before viral inoculation (p<0.0001) which may be due to its inhibition of viral attachment on (p<0.0001) and penetration (p<0.0001) into the host cells. The anti-HRSV activity of Radix Glycyrrhizae was further confirmed by RT-PCR and qRT-PCR. 300 μg/ml Radix Glycyrrhizae markedly decreased the viral amounts within the cells and in the suspension. Radix Glycyrrhizae might further stimulate mucosal cells to secrete IFN-β to counteract viral infection. CONCLUSIONS Both Radix Glycyrrhizae and Radix Glycyrrhizae Preparata are effective against HRSV infection on airway epithelial cells. Radix Glycyrrhizae inhibited HRSV mainly by preventing viral attachment, internalization, and by stimulating IFN secretion. 18β-GA may be one of its active constituents.
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Key Words
- 18β-ga, 18β-glycyrrhetinic acid
- a549, human lung carcinoma cell
- atcc, the american type culture collection
- cc50, 50% cytotoxic concentration
- elisa, enzyme-linked immunosorbent assay
- fcs, fetal calf serum
- fda, food and drug administration
- hep-2, human larynx epidermoid carcinoma cell
- ic50, minimal concentration required to inhibit 50% cytopathic effect
- ifn, interferon
- dmem, dulbecco’s modified eagle’s medium
- pbs, phosphate-buffered saline
- pfu, plaque forming unit
- hrsv, human respiratory syncytial virus
- glycyrrhiza uralensis
- respiratory tract infection
- rsv
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Affiliation(s)
- Chia Feng Yeh
- Department of Renal Care, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
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Yeh CF, Chang JS, Wang KC, Shieh DE, Chiang LC. Water extract of Cinnamomum cassia Blume inhibited human respiratory syncytial virus by preventing viral attachment, internalization, and syncytium formation. JOURNAL OF ETHNOPHARMACOLOGY 2013; 147:321-326. [PMID: 23518419 DOI: 10.1016/j.jep.2013.03.010] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2013] [Revised: 03/04/2013] [Accepted: 03/06/2013] [Indexed: 06/01/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Cinnamomum cassia Blume is a popular traditional Chinese herbal medicine that has been used to manage respiratory tract disease, including common cold and chronic bronchitis for thousand years. Human respiratory syncytial virus (HRSV) is one of the leading causes of severe lower respiratory tract illness worldwide. No effective therapeutic modality against HRSV infection has been proved. It is unknown whether Cinnamomum cassia is effective against HRSV. AIM OF THE STUDY This study tested the hypothesis that Cinnamomum cassia can effectively decrease HRSV-induced plaque formation and syncytium formation in respiratory mucosal cell lines. MATERIALS AND METHODS Antiviral activity of the hot water extract of Cinnamomum cassia against HRSV was tested by plaque reduction assay in both human upper (HEp-2) and low (A549) respiratory tract cell lines. Its ability to inhibit the synthesis of viral fusion (F) protein was examined by Western blot assay. RESULTS Cinnamomum cassia dose-dependently inhibited HRSV-induced plaque formation in both HEp-2 and A549 cell lines (p<0.0001). Cinnamomum cassia was more effective when given before viral infection (p<0.0001) mainly by inhibition of viral attachment (p<0.0001) and internalization (p<0.0001). Cinnamomum cassia could inhibit F protein production and syncytium formation to interfere with HRSV spreading. CONCLUSIONS Cinnamomum cassia prevented airway epithelia from HRSV infection through inhibiting viral attachment, internalization and syncytium formation. Cinnamomum cassia could be a candidate to develop therapeutic modalities to manage HRSV infection in the future.
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Affiliation(s)
- Chia Feng Yeh
- Department of Renal Care, College of Medicine, Kaohsiung Medical University, 100 Shih-Chuan 1st Road, Kaohsiung 807, Taiwan
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Li L, Yu CH, Ying HZ, Yu JM. Antiviral effects of modified dingchuan decoction against respiratory syncytial virus infection in vitro and in an immunosuppressive mouse model. JOURNAL OF ETHNOPHARMACOLOGY 2013; 147:238-244. [PMID: 23506991 DOI: 10.1016/j.jep.2013.03.012] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2012] [Revised: 02/25/2013] [Accepted: 03/07/2013] [Indexed: 06/01/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Modified dingchuan decoction (MDD) is used in traditional Chinese medicine for the treatment of cough, chronic bronchitis, asthma and viral pneumonia. AIM OF THE STUDY To investigate antiviral potentials of MDD in respiratory syncytial virus (RSV) infected mice. MATERIALS AND METHODS MDD and each component were evaluated for antiviral efficacy against RSV in vitro in cell culture. Mice were were treated with cyclophosphamide and infected with RSV. Then, treatments with MDD at doses of 1.75 g/kg, 3.5 g/kg and 7.0 g/kg, respectively, were oral administrated daily for 5 days after challenge. The levels of Eotaxin, IL-4 and IFN-γ in serum and lung tissue were detected by ELISA, viral loads in lung tissues were detected by RFQ-PCR while expressions of NF-κB and TLR4 mRNA were also detected by RFQ-PCR. RESULTS A selective index of >36.8 (2.5 times greater than that observed for ribavirin) was determined in the in vitro studies for this herbal medicine. MDD exhibited significant antiviral and anti-inflammatory effects on decreasing levels of Eotaxin, IL-4 and IFN-γ in serum and lung tissue, inhibiting pneumonia, decreasing lung viral loads and reversaling RSV-induced inflammation through down-regulation of TLR4 and NF-κB mRNA expression in the lung tissue of RSV-infected mice. CONCLUSIONS MDD could exhibit antiviral and anti-inflammatory effects on RSV-infected mice as a suppressor of Eotaxin, IL-4 and IFN-γ. These effects appeared to be mediated by inhibitions of TLR4 and NF-κB activation. Therefore, MDD could provide an effective therapeutic approach for RSV and its subsequent viral bronchitis.
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MESH Headings
- Administration, Oral
- Animals
- Antiviral Agents/administration & dosage
- Antiviral Agents/pharmacology
- Bronchiolitis, Viral/blood
- Bronchiolitis, Viral/drug therapy
- Bronchiolitis, Viral/genetics
- Bronchiolitis, Viral/immunology
- Bronchiolitis, Viral/virology
- Cell Line, Tumor
- Chemokine CCL11/blood
- Cyclophosphamide/pharmacology
- Disease Models, Animal
- Down-Regulation
- Drugs, Chinese Herbal/administration & dosage
- Drugs, Chinese Herbal/pharmacology
- Humans
- Immunocompromised Host
- Immunosuppressive Agents/pharmacology
- Interferon-gamma/blood
- Interleukin-4/blood
- Lung/drug effects
- Lung/immunology
- Lung/virology
- Medicine, Chinese Traditional
- Mice
- Mice, Inbred ICR
- NF-kappa B/genetics
- NF-kappa B/metabolism
- Phytotherapy
- Plants, Medicinal
- RNA, Messenger/metabolism
- Respiratory Syncytial Virus Infections/blood
- Respiratory Syncytial Virus Infections/drug therapy
- Respiratory Syncytial Virus Infections/genetics
- Respiratory Syncytial Virus Infections/immunology
- Respiratory Syncytial Virus Infections/virology
- Respiratory Syncytial Virus, Human/drug effects
- Respiratory Syncytial Virus, Human/growth & development
- Toll-Like Receptor 4/drug effects
- Toll-Like Receptor 4/genetics
- Toll-Like Receptor 4/metabolism
- Viral Load
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Affiliation(s)
- Lan Li
- Zhejiang Chinese Medical Hospital, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou 310006, China
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