相关实验视频

Updated: Jan 8, 2026

Comparative Lesions Analysis Through a Targeted Sequencing Approach

Comparative Lesions Analysis Through a Targeted Sequencing Approach

Published on: November 5, 2019

案例报告:SMARCA4缺乏的NSCLC与大脑转移,在染色质重塑和DNA损伤修复途径中携带共同突变

Jiaqin Song¹, Shikun Yang², Lei Xia¹

¹Department of Cancer Center, The Second Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Immunotherapy, Chongqing, China.

Frontiers in oncology

|December 15, 2025

概括

缺少SMARCA4的肺癌是具有攻击性的. 一个独特的案例显示了染色体重塑和DNA损伤修复基因的同时发生的突变,这表明这种罕见的癌症具有新的治疗点.

科学领域:

在瘤学瘤学.
遗传学遗传学是一个
分子生物学分子生物学

背景情况:

缺少SMARCA4的非小细胞肺癌 (SMARCA4-DNSCLC) 是一种罕见的,具有不良预后的侵袭性亚型.
SMARCA4突变经常与DNA损伤修复 (DDR) 途径的改变同时发生,但它们的相互作用尚不清楚.

研究的目的:

描述一个未经治疗的SMARCA4-DNSCLC病例与大脑转移的独特基因组特征.
探索染色体重塑,DDR路径失调和潜在的治疗影响之间的分子相互作用.

主要方法:

一个SMARCA4-DNSCLC瘤与大脑转移的综合基因组分析.
识别染色体重塑和DDR通路基因中的并发突变.
评估瘤突变负担 (TMB-H).

主要成果:

该病例呈现了SMARCA4,CHD8,NSD1 (染色体重塑) 和ATR,BARD1,TP53 (DDR通路) 的并发突变.
观察到瘤突变负担 (TMB-H) 的增加.
这种分子特征表明染色体不稳定性,受损的DNA修复和免疫性之间的协同效应.

结论:

独特的基因组特征突出显示了SMARCA4-DNSCLC中的潜在协同作用.
了解这种情况可以指导精确诊断和新的治疗策略.
需要进一步的研究来探索针对这种攻击性癌症亚型的向治疗方法.

关键词:

修复DNA损伤 (DDR) 基因的基因这就是SMARCA4的标志.染色体重塑基因的基因是什么基因组分析是基因组分析.非小细胞肺癌的肺癌.精密疗法是指精确的治疗方法.

更多相关视频

Modeling Brain Metastasis Via Tail-Vein Injection of Inflammatory Breast Cancer Cells

Modeling Brain Metastasis Via Tail-Vein Injection of Inflammatory Breast Cancer Cells

Published on: February 4, 2021

Author Spotlight: Unveiling Transmembrane Protein Family-Related Markers in Gastric Cancer and Implications for Targeted Therapies

Author Spotlight: Unveiling Transmembrane Protein Family-Related Markers in Gastric Cancer and Implications for Targeted Therapies

Published on: September 15, 2023

相关概念视频

Nucleosome Remodeling

Nucleosome Remodeling

Nucleosomes are the basic units of chromatin compaction. Each nucleosome consists of the DNA bound tightly around a histone core, which makes the DNA inaccessible to DNA binding proteins such as DNA polymerase and RNA polymerase. Hence, the fundamental problem is to ensure access to DNA when appropriate, despite the compact and protective chromatin structure.
Nucleosome remodeling complex
Eukaryotic cells have specialized enzymes called ATP-dependent nucleosome remodeling enzymes. These enzymes...

Loss of Tumor Suppressor Gene Functions

Loss of Tumor Suppressor Gene Functions

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.
When the tumor suppressor genes develop mutations or are lost, cells start growing out of control, leading to cancer. However, a single functional copy of the tumor suppressor gene is enough for the cells to maintain their normal functions and cell...

Cancers Originate from Somatic Mutations in a Single Cell

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...