系统性mRNA疫苗在狗大脑瘤中引起了快速的免疫激活
Sheila Carrera-Justiz1, Mahya Aghaee2, Sadeem Qdaisat3,4
1Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville, Florida, USA.
Journal for immunotherapy of cancer
|November 11, 2025
概括
狗类质瘤模型显示出新的癌症免疫疗法的前景. RNA脂质颗粒聚合物 (LPAs) 是安全的,并改善了狗的存活率,证明了对脑瘤治疗的潜力.
科学领域:
- 神经瘤学神经瘤学
- 免疫治疗是一种免疫疗法.
- 兽医医学 兽医医学 兽医医学
背景情况:
- 恶性质瘤是一种具有挑战性的脑癌,治疗选择有限.
- 狗质瘤与儿科质瘤有相似之处,使得狗成为一个有价值的临床前模型.
- 需要新的治疗策略来克服质瘤的治疗耐药性.
研究的目的:
- 评估RNA脂质颗粒聚合物 (LPAs) 作为癌症免疫疗法的安全性和有效性.
- 评估LPAs对犬类质瘤模型的生存和免疫反应的影响.
主要方法:
- 十只被证实患有质瘤的狗接受了RNA-LPAs的外周给药.
- 监测了安全性,耐受性和生存结果.
- 分析了免疫反应,包括瘤微环境中的细胞因子概况和基因表达.
主要成果:
- 疫苗制造是可行的,并且在所有受试者中一般都能耐受.
- 接受三次或四次LPA剂量的狗的中位生存时间分别为123天和155天,超过了历史对照.
- 观察到强大的细胞因子反应和mRNA有效载荷定位到瘤微环境中,这表明局部免疫反应.
结论:
- 对RNA-LPAs的外周给药可以在脑瘤微环境中诱导局部免疫反应.
- RNA-LPAs显示出作为恶性质瘤治疗方法的潜力,需要在人类临床试验中进一步调查.
- 这种方法可能有助于克服瘤免疫抑制,并改善向脑瘤的药物输送.
相关概念视频
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...
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...
Tumor Immunotherapy
Immunotherapy is a treatment that boosts or manipulates the immune system to fight diseases, including cancer. For instance, by stimulating an immune response through vaccinations against viruses that cause cancers, like hepatitis B virus and human papillomavirus, these diseases can be prevented. Nonetheless, some cancer cells can avoid the immune system due to their rapid mutation and division. The immune response to many cancers involves three phases: elimination, equilibrium, and escape.
Cancer Vaccines
Cancer treatment vaccines are a rapidly evolving field that offers a promising approach to immunotherapy. Unlike traditional vaccines that prevent diseases, cancer treatment vaccines are designed to treat existing cancers by stimulating the immune system to recognize and attack cancer cells.
Cancer vaccines come in two categories: preventive (prophylactic) and treatment (active). Preventive vaccines, such as the Human Papillomavirus (HPV) vaccine, protect against viruses that cause certain...
Cancer vaccines come in two categories: preventive (prophylactic) and treatment (active). Preventive vaccines, such as the Human Papillomavirus (HPV) vaccine, protect against viruses that cause certain...
Vaccines
Vaccines are among the most effective tools in preventive medicine, designed to prepare the immune system to recognize and combat infectious agents. By introducing antigens—substances that the immune system identifies as foreign—vaccines stimulate an adaptive immune response that leads to immunological memory. This immunological memory enables the body to mount a faster and more effective response upon future exposures to the actual pathogen.Vaccines can be categorized based on the type of...
Rabies
Rabies is a lethal zoonotic disease caused by a single-stranded, negative-sense RNA virus of the Lyssavirus genus, within the family Rhabdoviridae. Its primary mode of transmission to humans is through bites or saliva-contaminated scratches from infected mammals such as dogs, bats, raccoons, or foxes. Transmission can also occur if infectious saliva contacts abraded skin or intact mucous membranes, including the conjunctiva.Viral Entry and Early ReplicationOnce introduced at the bite or scratch...


