来自iPSCs的sEVs通过向CISH-STAT3来改善NK细胞衰老
Yu Chen1, Rongrong Cao1, Zhengsheng Chen1
1Institute of Microsurgery on Extremities, Department of Orthopedic Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China.
Stem cell research & therapy
|November 13, 2025
概括
诱导多能干细胞衍生的细胞外囊泡 (sEVs) 能使衰老的自然杀手 (NK) 细胞再生,增强它们的抗瘤活性. 这种无细胞疗法在治疗老年人与年龄相关的疾病和癌症方面表现有前途.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 老年学是一门学科.
背景情况:
- 衰老会降低自然杀手 (NK) 细胞的功能,影响免疫监测.
- 来自干细胞的小细胞外囊 (sEV) 可能会抵消与年龄相关的衰退,但它们对NK细胞衰老的影响尚不清楚.
研究的目的:
- 研究诱导多能干细胞 (iPSC) 衍生的sEVs的潜力,以使衰老的NK细胞复苏.
- 探索iPSC-sEVs对NK细胞功能和衰老的影响背后的机制.
主要方法:
- 老年小鼠接受了6个月的iPSC-sEV;NK细胞衰老标志物被分析.
- NK细胞-瘤细胞联合注射模型评估了iPSC-sEVs对细胞毒性和T细胞招募的影响.
- 在体外模型 (D-gal诱导的NK92) 和转录组分析确定了分子机制,包括CISH和STAT3信号.
主要成果:
- 在老年小鼠中,iPSC-sEVs部分逆转了NK细胞免疫发生.
- 用iPSC-sEVs治疗的NK细胞显示出增强的抗瘤细胞毒性和T细胞招募.
- iPSC-sEVs抑制了CISH的上调,并在衰老的NK细胞中促进了STAT3的酸化,调节了CISH-STAT3通路.
结论:
- 通过调节CISH和STAT3信号传递,iPSC-sEVs有效地使衰老的NK细胞复苏.
- iPSC-sEVs代表了与年龄相关的免疫功能障碍和癌症的有希望的无细胞治疗策略.
相关概念视频
iPS Cell Differentiation
3.0K
The ability of induced pluripotent stem cells or iPSCs to differentiate into most body cell types has stimulated repair and regenerative medicine research over the past few decades. iPSC-derived blood cells, hepatocytes, beta islet cells, cardiomyocytes, neurons, and other cell types can repair injuries or regenerate damaged tissue in diseases such as diabetes and neurodegenerative disorders.
3.0K
EPS and iPS Cells in Disease Research
3.3K
Embryonic and induced pluripotent stem cells are excellent models for disease research because of their ability to self-renew and differentiate into most cell types. Somatic cells from a patient are isolated and reprogrammed into induced pluripotent stem cells or iPSCs. These iPSCs are later differentiated into the desired cell type, which mirrors the diseased cell of the patient. In this way, disease models have been created for investigating diseases such as Down syndrome, type I diabetes,...
3.3K
Somatic to iPS Cell Reprogramming
2.6K
Reprogramming alters the gene expression in somatic cells, transforming them into induced pluripotent stem (iPS) cells over several generations. Scientists can reprogram cells by introducing genes for four transcription factors—Oct4, Sox2, Klf4, and c-Myc (OSKM) by viral or non-viral methods. These factors are also known as Yamanaka factors after Shinya Yamanaka, who first generated iPS cells using mouse skin cells. Yamanaka was awarded the Nobel Prize in Physiology or Medicine in 2012...
2.6K
Regulation of Hematopoietic Stem Cells
3.9K
All blood and immune cells are produced from the multipotent hematopoietic stem cells (HSCs) by the process of hematopoiesis. However, they all have a limited life span. In addition, many are depleted in immune surveillance or combatting an injury or infection. This makes blood one of the most regenerative tissues. Hematopoiesis helps replenish these blood and immune cells, restoring the body's normal functioning. However, overproduction of blood and immune cells can make them cancerous or...
3.9K
Induced Pluripotent Stem Cells
5.4K
Stem cells are undifferentiated cells that divide and produce different cell types. Ordinarily, cells that have differentiated into a specific cell type are terminally differentiated; however, scientists have found a way to reprogram these mature cells so that they dedifferentiate and return to an unspecialized, proliferative state. These cells are pluripotent like embryonic stem cells—able to produce all cell types—and are called induced pluripotent stem cells (iPSCs).
Somatic...
Somatic...
5.4K


