排名前五的药物类型 | 数量 |
---|---|
治疗性疫苗 | 1 |
融合蛋白 | 1 |
作用机制 HIV-1 gag抑制剂 |
在研适应症 |
非在研适应症- |
最高研发阶段临床1期 |
首次获批国家/地区- |
首次获批日期- |
作用机制- |
在研适应症 |
非在研适应症- |
最高研发阶段药物发现 |
首次获批国家/地区- |
首次获批日期- |
开始日期- |
申办/合作机构 |
The endoplasmic reticulum (ER) homeostasis is crucial for host cells and is influenced by beta-coronaviruses upon invasion. However, the mechanisms by which viral proteins interact with ER-resident host factors to modulate ER functions and morphology remain poorly understood. The accessory protein ORF3a of SARS-CoV-2 plays a pivotal role in viral pathogenesis and modulating host immune responses. The ER-localized chloride channel CLCC1 has been identified as a strong interaction partner of ORF3a, yet the consequences of this interaction are not fully elucidated. Here, we demonstrate that ORF3a interacts with CLCC1 to modulate ER ion homeostasis, including increased ER luminal [Cl−], [K+], and decreased ER [Ca2+], and to trigger unfolded protein responses. The ORF3a-CLCC1 interaction is linked to ER phagy and nucleophagy, monitored by newly developed ratiometric reporters. Mechanistically, ORF3a induces the formation of endogenous CLCC1 puncta, while overexpression of CLCC1 attenuates ORF3a-associated toxicity by sequestering ORF3a within the ER. Furthermore, the conservation of ORF3a functions across beta-coronaviruses suggests it is a potential therapeutic target and uncovers ORF3a-mediated phenotypes spatiotemporally. In addition, ORF3a expression in mouse brains causes ER stress, ER phagy, nucleophagy, and endomembrane reorganization, shedding light on the neurological manifestations and long-term effects observed in COVID-19 patients.
药物(靶点) | 适应症 | 全球最高研发状态 |
---|---|---|
重组腺病毒艾滋病gag疫苗(中国疾病预防控制中心病毒病预防控制所) ( HIV-1 gag ) | 获得性免疫缺陷综合征 更多 | 临床1期 |
CN117285652 ( IFNγ x Interleukins x NELFCD ) | 病毒感染 更多 | 药物发现 |