驱动突变与生殖细胞瘤中金敏感性特征相关
Yun Cheng Sawa1, Liwei Jia2, Harris Krause3
1Department of Urology, University of California San Diego, La Jolla, CA, USA.
NPJ precision oncology
|November 3, 2024
概括
对生殖细胞瘤 (GCTs) 的基因组分析揭示了抗性变异 (PRAs),如KRAS,TP53和KIT突变. 在化疗前的GCT中,这些PRA与较低的白金敏感度得分相关,这表明存在治疗耐药性的机制.
科学领域:
- 在瘤学瘤学.
- 基因组学就是基因组学.
- 翻译研究是翻译研究.
背景情况:
- 胚胎细胞瘤 (GCTs) 是年轻男性中最常见的固体恶性瘤.
- 基于西斯普拉丁的化疗非常有效,但耐药性仍然是一个临床挑战.
- 了解基因组和转录基因组驱动器的西斯普拉丁耐药性对于改善治疗结果至关重要.
研究的目的:
- 调查原发性和转移性GCT的基因组和转录组资料.
- 为了确定与GCT中西斯普拉丁耐药性相关的因素.
- 探索特定遗传变化与敏感性之间的关系.
主要方法:
- 对138个GCT样本 (化疗前和化疗后) 的基因组和转录组分析.
- 评估了白金耐药性变异 (PRA) 的患病率,包括KRAS,TP53,KIT突变和MDM2放大.
- 应用了对敏感性 (PSS) 的转录密码签名.
主要成果:
- 在初级GCT中,KIT突变比转移更频繁.
- 在转移性和淋巴结GCT中,TP53突变的患病率增加.
- 与PRA相比,与PRA阴性瘤相比,使用PRA的化疗先验GCT显示出明显较低的敏感度得分 (PSS).
结论:
- 抗性变异 (PRAs) 存在于GCTs中,可能导致抗性.
- 在化疗前的瘤中,较低的白金敏感度得分与PRA相关,这表明存在潜在的抗药机制.
- 基因组分析可以帮助识别面临白金耐药性风险的GCT.
相关概念视频
01:05Cancer-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
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
01:35Mutations
34.2K
Mutations are changes in the sequence of DNA. These changes can occur spontaneously or they can be induced by exposure to environmental factors. Mutations can be characterized in a number of different ways: whether and how they alter the amino acid sequence of the protein, whether they occur over a small or large area of DNA, and whether they occur in somatic cells or germline cells.
Chromosomal Alterations Are Large-Scale Mutations
While point mutations are changes in a single nucleotide in...
Chromosomal Alterations Are Large-Scale Mutations
While point mutations are changes in a single nucleotide in...
34.2K
02:21Cancers Originate from Somatic Mutations in a Single Cell
11.7K
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...
11.7K
02:56Treatment Resistant Cancers
3.3K
Cancer is the second leading cause of death in the United States. A cancer cell is genetically unstable and hence can mutate faster. They can also modify their microenvironment and escape immune surveillance. The difficulties in treating cancer are further compounded by the emergence of rapid resistance to anticancer drugs. The most common ways to attain resistance in cancer cells include alteration in drug transport and metabolism, modification of drug target, elevated DNA damage response, or...
3.3K