突肉瘤细胞外囊泡诱导脂肪肝
Tao Ren1,2, Zhiheng Zhou1, Huirong Hong1
1Department of Orthopedic, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China.
Biophysics reports
|July 4, 2025
概括
突肉瘤通过细胞外囊泡 (EV) 促进脂肪肝疾病,这些囊泡被肝脏的Kupffer细胞吸收. 减少EV分泌或Kupffer细胞活动会减轻这种效应.
科学领域:
- 在瘤学瘤学.
- 肝病学 肝病学是一种肝病学.
- 细胞生物学 细胞生物学
背景情况:
- 突肉瘤可以引起系统性病理变化.
- 细胞外囊泡 (EVs) 参与细胞间通信和疾病的发病.
研究的目的:
- 为了阐明突肉瘤EVs诱导脂肪肝的机制.
- 研究Kupffer细胞 (KCs) 在这个过程中的作用.
主要方法:
- 在裸体小鼠体内植入突肉瘤细胞,并给予SW-982衍生的EVs.
- 组织学分析 (H&E,油红色O),qPCR,传输电子显微镜 (TEM),纳米视觉,免疫光和流细胞计.
- 拉布27a敲击和库普费尔细胞失活实验.
主要成果:
- 突肉瘤EVs,大约141纳米大小,诱导了小鼠肝脏的脂质沉积,但没有引起转移.
- 在体内证实,EV被Kupffer细胞 (KCs) 吸收.
- 拉布27a倒置降低了EV分泌,而KC无活化降低了肝脂沉积.
结论:
- 突肉瘤EVs通过Kupffer细胞激活来调解脂肪肝的发展.
- EVs在突肉瘤和肝脏病理之间的沟通中发挥着关键作用.
相关概念视频
Rous Sarcoma Virus (RSV) and Cancer
5.4K
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...
5.4K
Intralumenal Vesicles and Multivesicular Bodies
3.7K
Intraluminal vesicles (ILVs) are small vesicles 50-80 nm in diameter formed during the maturation of early endosomes. A specialized endosome containing numerous ILVs is called a multivesicular body (MVB). ILVs contain internalized molecules such as antigens, nucleic acids, proteins, and metabolites. Some of these molecules are released from the MVBs inside exosomes and are transported to other cells. Other MVBs contain molecules that are retained in the ILVs and are later degraded within the...
3.7K
Tumor Progression
6.5K
Tumor progression is a phenomenon where the pre-formed tumor acquires successive mutations to become clinically more aggressive and malignant. In the 1950s, Foulds first described the stepwise progression of cancer cells through successive stages.
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...
6.5K
Diseases of the Liver and Gallbladder
1.0K
Liver and gallbladder diseases are a significant health concern, with prominent conditions including cirrhosis, hepatitis, non-alcoholic fatty liver disease (NAFLD), and gallstones. Jaundice is a common manifestation of liver and biliary disease.
Cirrhosis is characterized by the scarring of hepatic lobules in the liver, which are replaced by fibrous tissue, affecting the liver's normal functioning. NAFLD, on the other hand, is caused by an excessive build-up of fat in the liver, not...
Cirrhosis is characterized by the scarring of hepatic lobules in the liver, which are replaced by fibrous tissue, affecting the liver's normal functioning. NAFLD, on the other hand, is caused by an excessive build-up of fat in the liver, not...
1.0K


