相关实验视频
Updated: Jun 28, 2025

07:47
Studying the Role of Alveolar Macrophages in Breast Cancer Metastasis
Published on: June 26, 2016
9.7K
多壁碳纳米管-重编程巨细胞通过NBR2/TBX1轴促进乳腺癌转移
Keshuo Ding1,2, Yaling Zhu3,4, Lang Yan5
1Department of Pathology, School of Basic Medicine, Anhui Medical University, Hefei, Anhui 230032, China.
ACS nano
|April 16, 2024
概括
暴露于多壁碳纳米管 (MWCNTs) 通过改变巨细胞功能,促进乳腺癌转移. 暴露于MWCNT会减少长非编码RNA NBR2,导致M2极化,并增强瘤的扩散.
科学领域:
- 纳米材料的毒理学
- 癌症生物学 癌症生物学
- 免疫学 免疫学 免疫学
背景情况:
- 多壁碳纳米管 (MWCNTs) 的使用越来越多,引发了人类暴露的担忧.
- 以前的研究将MWCNT的肺部暴露与乳腺癌转移联系在一起,涉及巨细胞.
- 通过MWCNTs影响巨细胞并促进转移的分子机制需要阐明.
研究的目的:
- 通过研究MWCNT暴露通过巨细胞调节促进乳腺癌转移的分子机制.
- 确定关键分子参与MWCNT诱导的巨细胞极化及其在转移中的作用.
主要方法:
- 乳腺癌细胞和巨细胞的体外和体外共同培养系统.
- RNA测序 (RNA-seq) 用于在暴露于MWCNT的巨细胞中识别差异表达的长非编码RNA (lncRNA).
- 功能性测试以评估巨细胞极化 (M2表型) 和基因调节 (NBR2,TBX1).
- 基因沉默和过度表达技术用于验证分子通路.
主要成果:
- 暴露于MWCNT在体外和体内促进了乳腺癌细胞转移.
- 暴露于MWCNT诱导了巨细胞中的M2极化.
- 长非编码RNA NBR2在暴露于MWCNT的巨细胞中显著下调.
- 通过激活与M2相关的途径,NBR2耗尽促进了M2极化,包括通过H3k27ac激活对TBX1的正调节.
- TBX1沉默部分挽救了NBR2引起的M2极化损伤.
- 过度表达NBR2减弱了暴露于MWCNT的巨细胞的转移前效应.
结论:
- 暴露于MWCNT促进了乳腺癌转移,因为它将巨细胞倾向于M2表型.
- 低调 lncRNA NBR2 是一个关键的机制调解MWCNT诱导的M2极化和随后的转移.
- NBR2-TBX1通路对于调节MWCNT诱导的巨细胞极化和乳腺癌进展至关重要.
相关概念视频
Metastasis
5.5K
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...
5.5K
The Tumor Microenvironment
6.6K
Every normal cell or tissue is embedded in a complex local environment called stroma, consisting of different cell types, a basal membrane, and blood vessels. As normal cells mutate and develop into cancer cells, their local environment also changes to allow cancer progression. The tumor microenvironment (TME) consists of a complex cellular matrix of stromal cells and the developing tumor. The cross-talk between cancer cells and surrounding stromal cells is critical to disrupt normal tissue...
6.6K

