揭示免疫调节转变:表皮-介质细胞过渡 改变羊表皮细胞的免疫机制
Valeria Di Lollo1, Angelo Canciello2, Alessia Peserico2
1National Reference Center for Whole Genome Sequencing of Microbial Pathogens: Database and Bioinformatic Analysis, Istituto Zooprofilattico Sperimentale dell'Abruzzo e del Molise, Campo Boario, 64100 Teramo, Italy.
iScience
|September 8, 2023
概括
胚胎上皮细胞 (AECs) 在上皮-介质细胞过渡 (EMT) 期间经历免疫性质变化. 后EMT细胞从抗原呈现转变为炎症媒介的产生,影响免疫调节.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 再生医学是一种再生医学.
背景情况:
- 表皮-介质细胞转换 (EMT) 显著改变细胞表型.
- 胚胎上皮细胞 (AECs) 具有免疫调节功能.
- 了解EMT诱导的AEC免疫变化对于生殖生理学和再生医学至关重要.
研究的目的:
- 为了研究在脂多糖刺激时AECs在EMT前 (eAECs) 和EMT后 (mAECs) 的独特免疫反应.
- 确定调节eAECs和mAECs免疫功能的关键分子驱动因素.
- 评估这些免疫变化对免疫细胞相互作用的功能后果.
主要方法:
- 用脂多糖胺刺激的eAECs和mAECs的转录基因分析.
- 网络分析以确定关键的调节基因 (CIITA和Nrf2).
- 功能性测试涉及基因枯竭,以评估免疫调节 (淋巴细胞增殖,巨细胞IL-6释放).
主要成果:
- eAECs主要是对与抗原呈现相关的基因进行上调,由CIITA驱动.
- mAECs对可溶性炎症媒介的转录过度表达,Nrf2作为关键调节剂.
- 在eAECs中的CIITA和mAECs中的Nrf2的耗尽会损害它们的免疫调节功能.
结论:
- EMT显著重编程AECs的免疫特征,从免疫表现转向炎症媒介释放.
- CIITA和Nrf2分别是EMT前和后AEC免疫功能的关键调节者.
- 这些发现提供了关于AEC在怀孕和分娩中的作用的见解,并建议在再生医学中的潜在应用.
相关概念视频
Mesenchymal Stem Cells
4.8K
Mesenchymal stem cells (MSCs) are adult stem cells that can differentiate into most connective tissue cell types, except for hematopoietic cells, depending upon the source of MSCs. For example, bone-marrow-derived MSCs (BM-MSCs) can differentiate into osteocytes, hepatocytes, and pancreatic and neuronal cells. MSCs can be isolated from various sources such as bone marrow, placenta, adipose tissue, teeth, and Wharton’s jelly, a gelatinous substance in the umbilical cord. The ease of their...
4.8K
Cadherins in Tissue Organization
3.0K
The cadherins are a superfamily of cell adhesion molecules comprising over 180 variants, with specific tissues expressing a particular combination of cadherin types. Cadherins generally exhibit homophilic binding; i.e., cadherins on one cell bind to cadherins of the same or closely related type on another cell. Thus, cells of the same type have a specific affinity to bind to each other and sort themselves into clusters to form tissues.
Cell Sorting During Development
Cell sorting plays an...
Cell Sorting During Development
Cell sorting plays an...
3.0K
Metastasis
5.6K
Metastasis is the spread of cancer cells from the original site to distant locations in the body. Cancer cells can spread via blood vessels (hematogenous) as well as lymph vessels in the body.
Epithelial-to-Mesenchymal Transition
The epithelial-to-mesenchymal transition or EMT is a developmental process commonly observed in wound healing, embryogenesis, and cancer metastasis. EMT is induced by transforming growth factor-beta (TGF-β) or receptor tyrosine kinase (RTK) ligands, which further...
Epithelial-to-Mesenchymal Transition
The epithelial-to-mesenchymal transition or EMT is a developmental process commonly observed in wound healing, embryogenesis, and cancer metastasis. EMT is induced by transforming growth factor-beta (TGF-β) or receptor tyrosine kinase (RTK) ligands, which further...
5.6K


