与MSI相关的RARB,影响胃癌的进展和预后
Xufan Cai1, Wenfa Lin1,2, Fang Wu3
1Graduate School, Zhejiang Chinese Medicine University, Hangzhou, Zhejiang, China.
BMC gastroenterology
|August 23, 2024
概括
胃癌中的微卫星不稳定性 (MSI) 与RARB基因有关. 较低的RARB表达与更好的患者存活率和增加的免疫细胞透率相关,表明RARB是潜在的治疗点.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 癌症遗传学 癌症遗传学
背景情况:
- 微卫星不稳定性 (MSI) 显著影响胃癌生物学和患者的结果.
- 了解与MSI胃癌相关的遗传因素对于开发向疗法至关重要.
研究的目的:
- 为了识别与MSI胃癌相关的新基因.
- 调查视酸受体β (RARB) 在胃癌进展中的作用及其与MSI状态的相关性.
主要方法:
- 基因表达分析比较胃癌组织和相邻的正常组织.
- 在体外实验涉及RARB敲击,以评估对癌细胞增殖,入侵和迁移的影响.
- 在体内分析RARB表达,MSI状态和免疫细胞透之间的相关性.
主要成果:
- RARB被确定为与MSI胃癌相关的基因,并被发现在瘤组织中被下调.
- RARB的淘汰增强了胃癌细胞的增殖,入侵和迁移,促进了上皮-介质细胞过渡 (EMT).
- 胃癌患者的低RARB表达 (RARBLow) 与高RARB表达 (RARBHigh) 的患者相比,显示出明显更好的生存率.
- RARB表达与MSI状态和瘤微环境中的免疫透物水平相反相关.
结论:
- 低调RARB是MSI胃癌的一个特征,有助于瘤的进展.
- RARB表达水平与MSI状态和免疫透相反相关.
- RARB代表了改善胃癌治疗策略的潜在治疗目标,特别是在MSI阳性病例中.
相关概念视频
02:23Abnormal 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
03:03mTOR Signaling and Cancer Progression
3.8K
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...
3.8K
02:38The Ras Gene
6.2K
The Ras-gene-encoded proteins are regulators of signaling pathways controlling cell proliferation, differentiation, or cell survival. The Ras-gene family in humans constitutes three primary members—the HRas, NRas, and KRas. These genes code for four functionally distinct yet closely related proteins—the HRas, NRas, KRas4A, and KRas4B. The involvement of mutant Ras genes in human cancer was first discovered in 1982 and is among the most common causes of human tumorigenesis.
Ras is a...
Ras is a...
6.2K
01:20The Retinoblastoma Gene
4.1K
Tumor suppressor genes are normal genes that can slow down cell division, repair DNA mistakes, or program the cells for apoptosis in case of irreparable damage. Hence, they play an essential role in preventing the proliferation of damaged cells.
The first-ever tumor suppressor gene called Rb was identified in retinoblastoma - a rare eye tumor in children. In inherited forms of the disease, a child inherits one defective copy of the Rb gene, which predisposes them to retinoblastoma. However,...
The first-ever tumor suppressor gene called Rb was identified in retinoblastoma - a rare eye tumor in children. In inherited forms of the disease, a child inherits one defective copy of the Rb gene, which predisposes them to retinoblastoma. However,...
4.1K
02:07Tumor Progression
6.3K
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...
6.3K