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回复 HBVCURER 的帖子
"NVR3-778也在拼命的寻找蛛丝马迹,希望可以在抑制cccDNA形成"
只想补充,核心抑制剂高的期望.
Figure 3 depicts the potential contributions of NVR 3-778 to the functional cure of CHB infection through inhibition of the HBV Core dimer. The biological activities of HBV Core that are required for HBV persistence include:
Core dimer is the building block for assembly of the viral capsid. Core Inhibitors promote the formation of abnormal, dysfunctional viral capsids and thereby block production of infectious virus progeny.
The viral capsid can exit the hepatocyte or traffic back to the nucleus to replenish and maintain a stable number of cccDNA molecules. Core Inhibitors can also block cccDNA replenishment and contribute indirectly to inhibition of HBV replication.
Core binds the promoter regions of interferon stimulated genes (ISG) in the host chromosome to inhibit ISG expression and suppress the host innate immune response. Core Inhibitors that can induce ISG expression may restore the anti-HBV host innate immune response, leading to non-cytolytic clearance of infected hepatocytes.
Core binds cccDNA and maintains the mini-chromosome in a transcriptionally active state, thus allowing continuous production of new virus. Core Inhibitors that can prevent binding of Core to cccDNA will silence the cccDNA mini-chromosome. Silencing of cccDNA can prevent production of virus progeny and may restore host anti-HBV immune response.
Core Inhibitors have the potential to inhibit all of these activities. Complete suppression of infectious virus production and restoration of host innate immune response could lead to enhanced elimination of infected hepatocytes and, thus, greater functional cure rates in patients with chronic infection.
图3描述了NVR 3-778到CHB感染的功能治愈通过抑制HBV核心二聚体的潜在贡献。 HBV核心的所需要的乙肝病毒的持久性的生物活性包括:
芯二聚体是积木为病毒衣壳的组装。核心抑制剂促进变态,不正常的病毒衣壳的形成,从而阻断感染性病毒的后代。
病毒衣壳可以退出肝细胞或交通回细胞核以补充和维持cccDNA的分子的稳定数目。核心抑制剂还可以阻止cccDNA的补充,并有助于间接抑制HBV的复制。
芯结合的干扰素刺激的基因(ISG)在宿主染色体上的启动子区域,以抑制ISG表达并且抑制宿主先天免疫反应。核心抑制剂,能诱导ISG的表达可以恢复抗HBV宿主天然免疫反应,导致感染的肝细胞的非溶细胞间隙。
芯结合的cccDNA并保持微型染色体中转录活性状态,因此允许连续生产新病毒。核心抑制剂,可以防止核心结合cccDNA的会沉默的cccDNA的迷你染色体。 cccDNA的沉默可以防止生产病毒的后代,并可能恢复承办抗HBV免疫反应。
芯抑制剂具有抑制所有这些活动的潜力。感染性病毒的生产和恢复的宿主先天免疫反应的完全抑制可导致增强的消除感染的肝细胞的,因此,更大的功能的治愈率在慢性感染。 |
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