新兴的病毒蛋白,RBP动态和骨重塑:针对双重抗病毒和骨保护疗法的液体-液体相分离
Ying Huai1, Xue Wang1, Jingchuan Yan1
1Advance Spine Surgery Center, Department of Orthopedic Surgery, Tangdu Hospital, The Fourth Military Medical University, Xi'an, Shaanxi, 710038, PR China.
Molecular aspects of medicine
|January 8, 2026
概括
像SARS-CoV-2这样的病毒通过操纵细胞液体-液体相分离 (LLPS) 和RNA结合蛋白 (RBPs) 来破坏骨健康. 这次审查提出了一个
科学领域:
- 病毒学 病毒学
- 分子生物学分子生物学
- 骨生物学 骨生物学
背景情况:
- 新兴病毒 (SARS-CoV-2,ZIKV,CHIKV) 导致重大公共卫生问题,包括骨疾病和关节痛.
- 连接病毒感染与骨质平衡破坏的细胞内机制尚不清楚.
- 液体-液体相分离 (LLPS) 和RNA结合蛋白 (RBPs) 都与病毒病原发生有关.
研究的目的:
- 审查LLPS和RBPs在病毒引起的骨并发症中的作用.
- 为后病毒性肌肉骨疾病提出统一的"双击"病原性框架.
- 识别治疗策略的知识差距和转化机会.
主要方法:
- 对病毒性LLPS,RBP功能障碍和骨质生成信号的当前文献的综述.
- 分析SARS-CoV-2核体蛋白在通过LLPS抑制宿主压力颗粒中的作用.
- 将发现整合到一个连贯的病原体模型中.
主要成果:
- 病毒蛋白操纵LLPS破坏宿主抗病毒机制 (压力颗粒).
- 这种干扰会影响RBP稳定性 (例如,HuR),损害β-catenin的核定位,并抑制Wnt介导的骨质生成.
- 一个"双击"框架将病毒性LLPS,RBP功能障碍和受损的骨重塑联系起来.
结论:
- 对LLPS和RBPs的病毒操纵有助于病毒后骨疾病.
- 关键的知识缺口包括缺乏临床验证和对LLPS相关骨问题的体内证据.
- 针对病毒-宿主相接口提供了对抗病毒作用和恢复骨质生成信号的双重治疗潜力.
相关概念视频
Leaky Scanning
During most eukaryotic translation processes, the small 40S ribosome subunit scans an mRNA from its 5' end until it encounters the first start AUG codon. The large 60S ribosomal subunit then joins the smaller one to initiate protein synthesis. The location of the translation initiation is largely determined by the nucleotides near the start codon as there may be multiple translation initiation sites present on the mRNA. Marilyn Kozak discovered that the sequence RCCAUGG (where R stands for...
Mechanisms of Retrovirus-induced Cancers
Retroviruses are RNA viruses that have been shown to cause cancers in diverse species, including chickens, mice, cats, and monkeys. The RNA genomes of these viruses are first reverse-transcribed into single and then double-stranded DNA (dsDNA) copies. This dsDNA called proviral DNA then integrates into the host genome. Subsequently, the host cell transcribes the proviral DNA in concert with the chromosomal DNA. This leads to the production of viral RNA and proteins that assemble at the host...
Mechanisms of Retrovirus-induced Cancers
Retroviruses are RNA viruses that have been shown to cause cancers in diverse species, including chickens, mice, cats, and monkeys. The RNA genomes of these viruses are first reverse-transcribed into single and then double-stranded DNA (dsDNA) copies. This dsDNA called proviral DNA then integrates into the host genome. Subsequently, the host cell transcribes the proviral DNA in concert with the chromosomal DNA. This leads to the production of viral RNA and proteins that assemble at the host...
Viruses with RNA Genomes
RNA viruses are categorized into positive-strand, negative-strand, or double-stranded groups based on their genomic structure and replication mechanisms. This classification dictates how they exploit host cellular machinery for protein synthesis and replication. Some RNA viruses also utilize reverse transcription as part of their life cycle, further diversifying their replication strategies.Positive-Strand RNA VirusesPositive-strand RNA viruses have genomes that function directly as messenger...
Human Virome
The human body harbors a vast and diverse viral community known as the human virome. The virome includes bacteriophages that infect bacteria, and eukaryotic viruses that infect human cells. Transient dietary and environmental viruses also contribute to this dynamic ecosystem. Estimates suggest the human body may contain on the order of 10¹³ viral particles, though abundance varies widely by body site and detection method.Comprehensive characterization of the virome has become possible only with...
Inhibitors of Viral Protein Synthesis
Protein synthesis is indispensable for viral replication, as viruses lack the cellular machinery required for this process and must hijack the host's translational apparatus. In response, host cells deploy a critical innate immune defense involving interferons, specialized cytokines that play a central role in inhibiting viral propagation.Upon viral detection, infected cells release interferons that bind to receptors on adjacent uninfected cells, activating the JAK-STAT signaling pathway and...


