干扰素α在与艾滋病相关的卡波西肉瘤中具有抗逆转录病毒作用
H C Lane1, J A Kovacs, J Feinberg
1Laboratory of Immunoregulation and Treatment Branch, National Institute of Allergy and Infectious Diseases, Bethesda, Maryland.
Lancet (London, England)
|November 26, 1988
概括
复合干扰素-α (IFN-α) 在艾滋病和卡波西肉瘤患者中显示出抗瘤和抗逆转录病毒的益处. 用IFN-alpha治疗的早期阶段在CD4计数较高的患者中最有效.
科学领域:
- 在瘤学瘤学.
- 病毒学 病毒学
- 免疫学 免疫学 免疫学
背景情况:
- 卡波西肉瘤是一种艾滋病定义的癌症.
- 人类免疫缺陷病毒 (HIV) 感染导致免疫抑制.
- 干扰素α (IFNα) 正在研究其在艾滋病毒/艾滋病治疗中的治疗潜力.
研究的目的:
- 评估复合干扰素-α (IFN-α) 的体内抗逆转录病毒活性.
- 评估艾滋病和卡波西肉瘤患者用IFN-alpha治疗的抗瘤反应.
主要方法:
- 进行了一项开放的治疗试验,其中21名患者被诊断患有艾滋病和卡波西肉瘤.
- 这些患者接受了复合干扰素α (IFN-α) 治疗.
- 监测了瘤反应和病毒载荷标记 (HIV p24),以及CD4+T细胞计数.
主要成果:
- 在21名患者中有8名 (38%) 观察到完全或部分抗瘤反应.
- 与未响应者 (154 细胞/μL) 相比,响应者具有显著更高的治疗前CD4计数 (399 细胞/μL).
- 具有较高CD4细胞计数 (>400细胞/μL) 的患者表现出显著的瘤减少,而具有较低CD4细胞计数 (<150细胞/μL) 的患者没有反应. 抗病毒作用,包括降低HIV p24水平和负HIV培养,在CD4计数较高的患者中最为明显.
结论:
- 复合干扰素-α (IFN-α) 在艾滋病毒和卡波西肉瘤患者中显示出抗瘤和抗逆转录病毒的益处.
- 用IFN-alpha治疗在HIV感染和卡波西肉瘤的早期阶段显得最有益,特别是在CD4+T细胞数量较高的患者中.
- IFN-alpha治疗可以显著降低病毒载量和瘤负担,表明其作为治疗选择的潜力.
相关概念视频
Retrovirus Life Cycles
Retroviruses have a single-stranded RNA genome that undergoes a special form of replication. Once the retrovirus has entered the host cell, an enzyme called reverse transcriptase synthesizes double-stranded DNA from the retroviral RNA genome. This DNA copy of the genome is then integrated into the host’s genome inside the nucleus via an enzyme called integrase. Consequently, the retroviral genome is transcribed into RNA whenever the host’s genome is transcribed, allowing the retrovirus to...
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...
Rous Sarcoma Virus (RSV) and Cancer
Rous Sarcoma virus or RSV was discovered by F. Peyton Rous in the year 1911 as a filterable transmissible agent that could cause tumors in chickens. He won a Nobel Prize for this discovery in 1966. His experiments clearly demonstrated that some cancers could be caused by infectious agents and led to the discovery of many more cancer-causing viruses in animals as well as humans.
RSV is a retrovirus that contains two copies of a plus-strand RNA genome. Its genome consists of four main open...
RSV is a retrovirus that contains two copies of a plus-strand RNA genome. Its genome consists of four main open...
Immune Response Against Viral Pathogens
The immune system's response to viral infections is a complex and coordinated process involving natural killer (NK) cells, T cell-mediated responses, and antibody-mediated responses.
NK Cells
NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...
NK Cells
NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...
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...
Antiviral Nucleoside Inhibitors
Antiviral Nucleoside InhibitorsAntiviral nucleoside inhibitors are structural analogs of natural nucleosides that interfere with viral DNA or RNA synthesis. These compounds selectively target viral polymerases due to their resemblance to host nucleosides, thereby disrupting viral genome replication.Mechanism of Acyclovir ActionAcyclovir is a guanosine analog with a three-carbon acyclic side chain. It selectively targets herpes simplex virus type 1 (HSV-1), herpes simplex virus type 2 (HSV-2),...


