探索胃肠癌中的代谢途径:关于因果关系的新证据
Zhiguo Wang1, Chen Wang2, Xiangyu Gao3,4
1Qilu Hospital of Shandong University (Qingdao), Qingdao, Shandong, China. disheng28@163.com.
Discover oncology
|September 29, 2025
概括
这项研究使用了门德尔的随机化方法,发现36种血液代谢物因果影响胃肠道癌症风险. 这些发现为早期查和预防胃肠道癌提供了潜在的生物标志物.
科学领域:
- 代谢学 代谢学 代谢学
- 遗传学 是一个遗传学.
- 癌症研究 癌症研究
背景情况:
- 代谢学研究揭示了代谢物和癌症风险之间的关联.
- 癌症的发展涉及代谢过程的改变,为生物标志物和治疗提供了洞察力.
- 血液代谢物对胃肠道 (GI) 癌症的因果影响需要进一步阐明.
研究的目的:
- 研究人类血液代谢物对胃肠道癌症风险的潜在因果影响.
- 使用门德尔随机化 (MR) 分析来评估这些因果关系.
- 为了确定新的生物标志物和GI癌症的治疗点.
主要方法:
- 采用双样本的门德尔随机化 (MR) 方法.
- 使用GWAS数据库和SNP选择选暴露和结果因素.
- 使用了各种MR统计方法,包括逆方差加权 (IVW) 和多变量MR (MVMR).
- 进行敏感性分析以确保结果的可靠性.
主要成果:
- 确定了36种与肠道癌症风险因果相关的血液代谢物.
- 较高的甲基卡尼丁与胃肠道癌症风险增加有关;较高的酸与风险降低有关.
- 观察到特定的甘油和氧化 bilirubin 与肠道癌症有显著的关联.
- 整合了9个代谢途径,表明跨肠道癌症类型的共享途径.
结论:
- 证实了36种血液代谢物在肠道癌症发病过程中的重要作用.
- 确定了早期查和预防胃肠道癌的潜在新生物标志物.
- 突出了未来治疗向的特定代谢物和途径.
相关概念视频
03:03mTOR Signaling and Cancer Progression
4.6K
The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors.
The mTOR pathway or the...
The mTOR pathway or the...
4.6K
02:53Adaptive Mechanisms in Cancer Cells
6.8K
Cancer cells accumulate genetic changes at an abnormally rapid rate due to the defects in the DNA repair mechanisms. From an evolutionary perspective, such genetic instability is advantageous for cancer development. Mutant cell lines accumulate a series of beneficial mutations that contribute to their progression into cancer.
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...
6.8K
02:07Tumor Progression
7.2K
Tumor progression is a phenomenon where the pre-formed tumor acquires successive mutations to become clinically more aggressive and malignant. In the 1950s, Foulds first described the stepwise progression of cancer cells through successive stages.
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...
7.2K
02:21Cancers Originate from Somatic Mutations in a Single Cell
14.5K
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...
14.5K
01:33Cancer-Critical Genes I: Proto-oncogenes
11.0K
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...
11.0K
01:05Cancer-Critical Genes II: Tumor Suppressor Genes
9.3K
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...
9.3K