在Muc2中的错误突变促进了肠道微生物组和代谢组依赖性结肠炎相关的瘤发生
bioRxiv : the preprint server for biology
|June 12, 2025
概括
肠道微生物组驱动大肠炎相关癌症 (CAC) 在Winnie小鼠,一个UC类型的模型. 特定的微生物和代谢特征促进瘤发生,挑战了癌症作为非传染性的概念.
科学领域:
- 微生物学 微生物学
- 在瘤学瘤学.
- 胃肠病学 胃肠病学
背景情况:
- 大肠炎相关癌症 (CAC) 的发展受到宿主环境相互作用和肠道微生物群的影响.
- 性结肠炎 (UC) 是CAC的重要风险因素,其全球流行率正在增加.
- 肠道光环环境在癌症发展中的作用尚未得到充分探索.
研究的目的:
- 通过Winnie小鼠模型调查肠道微生物组在结肠炎和CAC发展中的作用.
- 为了识别与CAC.相关的微生物和代谢特征.
- 建立一种新的,相关的模型来研究CAC的病原性.
主要方法:
- 温尼小鼠被安置在常规 (CONV),无特定病原体 (SPF) 或无细菌 (GF) 的条件下.
- 枪元基因组学,代谢学和脂质组学被用来分析微生物和代谢资料.
- 使用SPF Winnie或WT (Bl/6) 捐赠者进行了便微生物种移植 (FMT),将其移植到GF Winnie接受者身上.
主要成果:
- 在SPF Winnie小鼠中出现严重的结肠炎和自发的CAC,而在CONV Winnie小鼠中出现轻微的结肠炎而没有瘤.
- GF Winnie小鼠得到了大肠炎和CAC的保护,证实了微生物组的重要作用.
- 在Winnie小鼠中发现了一种明显的促炎微生物和代谢特征,这些小鼠患有CAC.
- 来自SPFWinnie捐赠者的FMT诱导了GFWinnie接受者的CAC,证明了微生物群驱动的宿主特异性敏感性.
结论:
- 肠道微生物组是Winnie小鼠中CAC启动和进展的关键驱动因素.
- 一个特定的微生物和代谢特征促进了从大肠炎过渡到CAC.
- 这种Winnie小鼠模型为研究CAC提供了一个有价值的平台,并挑战结肠癌的非传染性.
更多相关视频
09:01Non-invasive Assessment of the Efficacy of New Therapeutics for Intestinal Pathologies Using Serial Endoscopic Imaging of Live Mice
Published on: March 10, 2015
10.0K
11:02Induction of Invasive Transitional Cell Bladder Carcinoma in Immune Intact Human MUC1 Transgenic Mice: A Model for Immunotherapy Development
Published on: October 30, 2013
21.2K
相关概念视频
Mismatch Repair
4.8K
Organisms are capable of detecting and fixing nucleotide mismatches that occur during DNA replication. This sophisticated process requires identifying the new strand and replacing the erroneous bases with correct nucleotides. Mismatch repair is coordinated by many proteins in both prokaryotes and eukaryotes.
The Mutator Protein Family Plays a Key Role in DNA Mismatch Repair
The human genome has more than 3 billion base pairs of DNA per cell. Prior to cell division, that vast amount of genetic...
The Mutator Protein Family Plays a Key Role in DNA Mismatch Repair
The human genome has more than 3 billion base pairs of DNA per cell. Prior to cell division, that vast amount of genetic...
4.8K
Abnormal Proliferation
4.5K
Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the...
4.5K
Cancer-Critical Genes II: Tumor Suppressor Genes
7.3K
Genes usually encode proteins necessary for the proper functioning of a healthy cell. Mutations can often cause changes to the gene expression pattern, thereby altering the phenotype.
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
7.3K
