Radix isatidis Polysaccharides Inhibit Influenza a Virus and Influenza A Virus-Induced Inflammation via Suppression of Host TLR3 Signaling In Vitro
Influenza remains one of the major epidemic diseases worldwide, and rapid virus replication and collateral lung tissue damage caused by excessive pro-inflammatory host immune cell responses lead to high mortality rates. Thus, novel therapeutic agents that control influenza A virus (IAV) propagation...
| Main Authors: | , , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2017-01-01
|
| Series: | Molecules |
| Subjects: | |
| Online Access: | http://www.mdpi.com/1420-3049/22/1/116 |
| id |
doaj-5a516c0af64440ca89ef14c6e5759a4d |
|---|---|
| record_format |
Article |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
Zhengtu Li Li Li Hongxia Zhou Lijuan Zeng Tingting Chen Qiaolian Chen Beixian Zhou Yutao Wang Qiaoyan Chen Ping Hu Zifeng Yang |
| spellingShingle |
Zhengtu Li Li Li Hongxia Zhou Lijuan Zeng Tingting Chen Qiaolian Chen Beixian Zhou Yutao Wang Qiaoyan Chen Ping Hu Zifeng Yang Radix isatidis Polysaccharides Inhibit Influenza a Virus and Influenza A Virus-Induced Inflammation via Suppression of Host TLR3 Signaling In Vitro Molecules anti-inflammatory antiviral polysaccharides Radix isatidis TLR-3 |
| author_facet |
Zhengtu Li Li Li Hongxia Zhou Lijuan Zeng Tingting Chen Qiaolian Chen Beixian Zhou Yutao Wang Qiaoyan Chen Ping Hu Zifeng Yang |
| author_sort |
Zhengtu Li |
| title |
Radix isatidis Polysaccharides Inhibit Influenza a Virus and Influenza A Virus-Induced Inflammation via Suppression of Host TLR3 Signaling In Vitro |
| title_short |
Radix isatidis Polysaccharides Inhibit Influenza a Virus and Influenza A Virus-Induced Inflammation via Suppression of Host TLR3 Signaling In Vitro |
| title_full |
Radix isatidis Polysaccharides Inhibit Influenza a Virus and Influenza A Virus-Induced Inflammation via Suppression of Host TLR3 Signaling In Vitro |
| title_fullStr |
Radix isatidis Polysaccharides Inhibit Influenza a Virus and Influenza A Virus-Induced Inflammation via Suppression of Host TLR3 Signaling In Vitro |
| title_full_unstemmed |
Radix isatidis Polysaccharides Inhibit Influenza a Virus and Influenza A Virus-Induced Inflammation via Suppression of Host TLR3 Signaling In Vitro |
| title_sort |
radix isatidis polysaccharides inhibit influenza a virus and influenza a virus-induced inflammation via suppression of host tlr3 signaling in vitro |
| publisher |
MDPI AG |
| series |
Molecules |
| issn |
1420-3049 |
| publishDate |
2017-01-01 |
| description |
Influenza remains one of the major epidemic diseases worldwide, and rapid virus replication and collateral lung tissue damage caused by excessive pro-inflammatory host immune cell responses lead to high mortality rates. Thus, novel therapeutic agents that control influenza A virus (IAV) propagation and attenuate excessive pro-inflammatory responses are needed. Polysaccharide extract from Radix isatidis, a traditional Chinese herbal medicine, exerted potent anti-IAV activity against human seasonal influenza viruses (H1N1 and H3N2) and avian influenza viruses (H6N2 and H9N2) in vitro. The polysaccharides also significantly reduced the expression of pro-inflammatory cytokines (IL-6) and chemokines (IP-10, MIG, and CCL-5) stimulated by A/PR/8/34 (H1N1) at a range of doses (7.5 mg/mL, 15 mg/mL, and 30 mg/mL); however, they were only effective against progeny virus at a high dose. Similar activity was detected against inflammation induced by avian influenza virus H9N2. The polysaccharides strongly inhibited the protein expression of TLR-3 induced by PR8, suggesting that they impair the upregulation of pro-inflammatory factors induced by IAV by inhibiting activation of the TLR-3 signaling pathway. The polysaccharide extract from Radix isatidis root therefore has the potential to be used as an adjunct to antiviral therapy for the treatment of IAV infection. |
| topic |
anti-inflammatory antiviral polysaccharides Radix isatidis TLR-3 |
| url |
http://www.mdpi.com/1420-3049/22/1/116 |
| work_keys_str_mv |
AT zhengtuli radixisatidispolysaccharidesinhibitinfluenzaavirusandinfluenzaavirusinducedinflammationviasuppressionofhosttlr3signalinginvitro AT lili radixisatidispolysaccharidesinhibitinfluenzaavirusandinfluenzaavirusinducedinflammationviasuppressionofhosttlr3signalinginvitro AT hongxiazhou radixisatidispolysaccharidesinhibitinfluenzaavirusandinfluenzaavirusinducedinflammationviasuppressionofhosttlr3signalinginvitro AT lijuanzeng radixisatidispolysaccharidesinhibitinfluenzaavirusandinfluenzaavirusinducedinflammationviasuppressionofhosttlr3signalinginvitro AT tingtingchen radixisatidispolysaccharidesinhibitinfluenzaavirusandinfluenzaavirusinducedinflammationviasuppressionofhosttlr3signalinginvitro AT qiaolianchen radixisatidispolysaccharidesinhibitinfluenzaavirusandinfluenzaavirusinducedinflammationviasuppressionofhosttlr3signalinginvitro AT beixianzhou radixisatidispolysaccharidesinhibitinfluenzaavirusandinfluenzaavirusinducedinflammationviasuppressionofhosttlr3signalinginvitro AT yutaowang radixisatidispolysaccharidesinhibitinfluenzaavirusandinfluenzaavirusinducedinflammationviasuppressionofhosttlr3signalinginvitro AT qiaoyanchen radixisatidispolysaccharidesinhibitinfluenzaavirusandinfluenzaavirusinducedinflammationviasuppressionofhosttlr3signalinginvitro AT pinghu radixisatidispolysaccharidesinhibitinfluenzaavirusandinfluenzaavirusinducedinflammationviasuppressionofhosttlr3signalinginvitro AT zifengyang radixisatidispolysaccharidesinhibitinfluenzaavirusandinfluenzaavirusinducedinflammationviasuppressionofhosttlr3signalinginvitro |
| _version_ |
1725323423719096320 |
| spelling |
doaj-5a516c0af64440ca89ef14c6e5759a4d2020-11-25T00:31:08ZengMDPI AGMolecules1420-30492017-01-0122111610.3390/molecules22010116molecules22010116Radix isatidis Polysaccharides Inhibit Influenza a Virus and Influenza A Virus-Induced Inflammation via Suppression of Host TLR3 Signaling In VitroZhengtu Li0Li Li1Hongxia Zhou2Lijuan Zeng3Tingting Chen4Qiaolian Chen5Beixian Zhou6Yutao Wang7Qiaoyan Chen8Ping Hu9Zifeng Yang10State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Disease, First Affiliated Hospital of Guangzhou Medical University, (Guangzhou Medical University), Guangzhou 510120, ChinaThe First Hospital of Yulin, Yuxi Da Dao Road, Yulin 719000, ChinaState Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Disease, First Affiliated Hospital of Guangzhou Medical University, (Guangzhou Medical University), Guangzhou 510120, ChinaState Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Disease, First Affiliated Hospital of Guangzhou Medical University, (Guangzhou Medical University), Guangzhou 510120, ChinaState Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Disease, First Affiliated Hospital of Guangzhou Medical University, (Guangzhou Medical University), Guangzhou 510120, ChinaState Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Disease, First Affiliated Hospital of Guangzhou Medical University, (Guangzhou Medical University), Guangzhou 510120, ChinaState Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Disease, First Affiliated Hospital of Guangzhou Medical University, (Guangzhou Medical University), Guangzhou 510120, ChinaState Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Disease, First Affiliated Hospital of Guangzhou Medical University, (Guangzhou Medical University), Guangzhou 510120, ChinaGuangdong Provincial Hospital of Traditional Chinese Medicine, Guangzhou University of Traditinal Chinese Medicine, Guangzhou 510180, ChinaShanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, ChinaState Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Disease, First Affiliated Hospital of Guangzhou Medical University, (Guangzhou Medical University), Guangzhou 510120, ChinaInfluenza remains one of the major epidemic diseases worldwide, and rapid virus replication and collateral lung tissue damage caused by excessive pro-inflammatory host immune cell responses lead to high mortality rates. Thus, novel therapeutic agents that control influenza A virus (IAV) propagation and attenuate excessive pro-inflammatory responses are needed. Polysaccharide extract from Radix isatidis, a traditional Chinese herbal medicine, exerted potent anti-IAV activity against human seasonal influenza viruses (H1N1 and H3N2) and avian influenza viruses (H6N2 and H9N2) in vitro. The polysaccharides also significantly reduced the expression of pro-inflammatory cytokines (IL-6) and chemokines (IP-10, MIG, and CCL-5) stimulated by A/PR/8/34 (H1N1) at a range of doses (7.5 mg/mL, 15 mg/mL, and 30 mg/mL); however, they were only effective against progeny virus at a high dose. Similar activity was detected against inflammation induced by avian influenza virus H9N2. The polysaccharides strongly inhibited the protein expression of TLR-3 induced by PR8, suggesting that they impair the upregulation of pro-inflammatory factors induced by IAV by inhibiting activation of the TLR-3 signaling pathway. The polysaccharide extract from Radix isatidis root therefore has the potential to be used as an adjunct to antiviral therapy for the treatment of IAV infection.http://www.mdpi.com/1420-3049/22/1/116anti-inflammatoryantiviralpolysaccharidesRadix isatidisTLR-3 |