当前位置: X-MOL 学术Cell Biosci. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Epigallocatechin gallate from green tea effectively blocks infection of SARS-CoV-2 and new variants by inhibiting spike binding to ACE2 receptor
Cell and Bioscience ( IF 7.5 ) Pub Date : 2021-08-30 , DOI: 10.1186/s13578-021-00680-8
Jinbiao Liu 1, 2 , Brittany H Bodnar 1 , Fengzhen Meng 1 , Adil I Khan 1 , Xu Wang 1 , Sami Saribas 1 , Tao Wang 3 , Saroj Chandra Lohani 3 , Peng Wang 1 , Zhengyu Wei 1 , Jinjun Luo 1 , Lina Zhou 1 , Jianguo Wu 2 , Guangxiang Luo 4 , Qingsheng Li 3 , Wenhui Hu 1 , Wenzhe Ho 1
Affiliation  

As the COVID-19 pandemic rages on, the new SARS-CoV-2 variants have emerged in the different regions of the world. These newly emerged variants have mutations in their spike (S) protein that may confer resistance to vaccine-elicited immunity and existing neutralizing antibody therapeutics. Therefore, there is still an urgent need of safe, effective, and affordable agents for prevention/treatment of SARS-CoV-2 and its variant infection. We demonstrated that green tea beverage (GTB) or its major ingredient, epigallocatechin gallate (EGCG), were highly effective in inhibiting infection of live SARS-CoV-2 and human coronavirus (HCoV OC43). In addition, infection of the pseudoviruses with spikes of the new variants (UK-B.1.1.7, SA-B.1.351, and CA-B.1.429) was efficiently blocked by GTB or EGCG. Among the 4 active green tea catechins at noncytotoxic doses, EGCG was the most potent in the action against the viruses. The highest inhibitory activity was observed when the viruses or the cells were pre-incubated with EGCG prior to the infection. Mechanistic studies revealed that EGCG blocked infection at the entry step through interfering with the engagement of the receptor binding domain (RBD) of the viral spikes to angiotensin-converting enzyme 2 (ACE2) receptor of the host cells. These data support further clinical evaluation and development of EGCG as a novel, safe, and cost-effective natural product for prevention/treatment of SARS-CoV-2 transmission and infection.

中文翻译:

绿茶中的表没食子儿茶素没食子酸酯通过抑制与 ACE2 受体的刺突结合有效阻断 SARS-CoV-2 和新变种的感染

随着 COVID-19 大流行的肆虐,新的 SARS-CoV-2 变种已经出现在世界不同地区。这些新出现的变体在其刺突 (S) 蛋白中发生突变,可能会导致对疫苗引发的免疫力和现有的中和抗体疗法产生抗性。因此,仍然迫切需要安全、有效和负担得起的药物来预防/治疗 SARS-CoV-2 及其变异体感染。我们证明了绿茶饮料 (GTB) 或其主要成分表没食子儿茶素没食子酸酯 (EGCG) 在抑制活 SARS-CoV-2 和人类冠状病毒 (HCoV OC43) 的感染方面非常有效。此外,带有新变体(UK-B.1.1.7、SA-B.1.351 和 CA-B.1.429)尖峰的假病毒感染被 GTB 或 EGCG 有效阻断。在 4 种无细胞毒性剂量的活性绿茶儿茶素中,EGCG 对病毒的作用最强。当病毒或细胞在感染前用 EGCG 预孵育时,观察到最高的抑制活性。机制研究表明,EGCG 通过干扰病毒刺突的受体结合域 (RBD) 与宿主细胞的血管紧张素转换酶 2 (ACE2) 受体的结合,在进入步骤阻止感染。这些数据支持将 EGCG 作为一种新型、安全且具有成本效益的天然产品进行进一步的临床评估和开发,用于预防/治疗 SARS-CoV-2 的传播和感染。当病毒或细胞在感染前用 EGCG 预孵育时,观察到最高的抑制活性。机制研究表明,EGCG 通过干扰病毒刺突的受体结合域 (RBD) 与宿主细胞的血管紧张素转换酶 2 (ACE2) 受体的结合,在进入步骤阻止感染。这些数据支持将 EGCG 作为一种新型、安全且具有成本效益的天然产品进行进一步的临床评估和开发,用于预防/治疗 SARS-CoV-2 的传播和感染。当病毒或细胞在感染前用 EGCG 预孵育时,观察到最高的抑制活性。机制研究表明,EGCG 通过干扰病毒刺突的受体结合域 (RBD) 与宿主细胞的血管紧张素转换酶 2 (ACE2) 受体的结合,在进入步骤阻止感染。这些数据支持将 EGCG 作为一种新型、安全且具有成本效益的天然产品进行进一步的临床评估和开发,用于预防/治疗 SARS-CoV-2 的传播和感染。
更新日期:2021-08-30
down
wechat
bug