单细胞RNA分析揭示了结直肠癌中单核细胞的分类和特征
Tiantian Ji1,2,3, Haoyu Fu1,2,3,4, Liping Wang1,2,3
1Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
PLoS genetics
|February 26, 2024
概括
研究人员在结直肠癌 (CRC) 中确定了六个单核细胞子集,揭示了与预后不佳相关的新子集. 了解这些免疫细胞为改善瘤微环境提供了潜在的治疗点.
科学领域:
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
- 基因组学就是基因组学.
背景情况:
- 结肠直肠癌 (CRC) 构成了重大的全球健康挑战,单核细胞在瘤微环境中发挥着至关重要的作用.
- 巨细胞是一种单核细胞,涉及CRC的进展,入侵和转移.
研究的目的:
- 在CRC瘤微环境中全面分析单核细胞的免疫功能.
- 使用先进的测序技术,对CRC中单核细胞的不同子集进行分类和表征.
主要方法:
- 单细胞RNA测序被用来识别和分类CRC中的单核细胞子集.
- 标志着每个已识别的子集内的异质性.
主要成果:
- 在CRC中分类了六个不同的单核细胞子集.
- 发现组织金属蛋白酶抑制剂 (TIMPs) 影响了亲和抗炎单核细胞的分化.
- 阐明了循环单细胞转化为瘤相关巨细胞 (TAMs) 的分化轨迹,包括转录因子 (TF) 规律的动态变化.
- 一个特定的子集 (C5),标志着激活的脂质代谢,被确定为终端分化状态,与患者预后负相关.
结论:
- 这项研究在CRC的背景下推动了对单细胞到巨细胞分化的理解.
- 确定了一种与CRC预后相关的单核细胞的新型子集.
- 揭示了控制单核细胞分化的关键TF规律,为调节CRC瘤微环境提供了潜在的治疗标.
更多相关视频
相关概念视频
lncRNA - Long Non-coding RNAs
In humans, more than 80% of the genome gets transcribed. However, only around 2% of the genome codes for proteins. The remaining part produces non-coding RNAs which includes ribosomal RNAs, transfer RNAs, telomerase RNAs, and regulatory RNAs, among other types. A large number of regulatory non-coding RNAs have been classified into two groups depending upon their length – small non-coding RNAs, such as microRNA, which are less than 200 nucleotides in length, and long non-coding RNA (lncRNA)...
Cancers Originate from Somatic Mutations in a Single Cell
Cancer arises from mutations in the critical genes that allow healthy cells to escape cell cycle regulation and acquire the ability to proliferate indefinitely. Though originating from a single mutation event in one of the originator cells, cancer progresses when the mutant cell lines continue to gain more and more mutations, and finally, become malignant. For example, chronic myelogenous leukemia (CML) develops initially as a non-lethal increase in white blood cells, which progressively...
Cancers Originate from Somatic Mutations in a Single Cell
Cancer arises from mutations in the critical genes that allow healthy cells to escape cell cycle regulation and acquire the ability to proliferate indefinitely. Though originating from a single mutation event in one of the originator cells, cancer progresses when the mutant cell lines continue to gain more and more mutations, and finally, become malignant. For example, chronic myelogenous leukemia (CML) develops initially as a non-lethal increase in white blood cells, which progressively...


