相关实验视频

Updated: Jun 28, 2025

Author Spotlight: FISH as a Tool for Precise Gene Amplification Assessment in Cancer Specimens

Author Spotlight: FISH as a Tool for Precise Gene Amplification Assessment in Cancer Specimens

Published on: July 12, 2024

瘤染色体外DNA:生物发生和最近在该领域的进展

Haomin Wu¹, Shiqi Liu¹, Di Wu¹

¹Department of General Surgery, the First Hospital of China Medical University, 155# Nanjing Street, Shenyang 110001, China.

Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie

|April 13, 2024

概括

染色体外DNA (ecDNA) 放大瘤中的癌基因,推动癌症的发展和治疗耐药性. 这项研究探讨了ecDNA.

科学领域:

在瘤学瘤学.
分子生物学分子生物学
遗传学遗传学是一个

背景情况:

染色体外DNA (ecDNA) 包含在主要染色体外发现的自我复制的圆形DNA分子.
ecDNA含有调节元素和瘤基因,在恶性瘤进展中发挥作用.
癌基因在ecDNA上的存在和放大与癌症预后不佳有关.

研究的目的:

审查了解癌症中的染色体外DNA (ecDNA) 的最新进展.
讨论ecDNA在瘤发育,异质性和治疗耐药性的作用.
探索ecDNA作为癌症生物标志物和治疗点的潜力.

主要方法:

关于恶性瘤中ecDNA的最近研究的文献综述.
对ecDNA的结构特征及其对瘤基因放大影响的分析.
检查ecDNA在瘤细胞异质性和适应中的作用.
讨论 ecDNA 的当前和潜在的临床应用.

主要成果:

ecDNA显著放大瘤基因,有助于恶性瘤的发展.
细胞分裂期间ecDNA分布不均,会增加瘤细胞的异质性.
这种异质性增强了瘤的适应能力和对治疗的抵抗力.
在瘤学中,ecDNA显示出作为生物标志物和治疗点的前景.

结论:

外染色体DNA (ecDNA) 是瘤进展和治疗挑战的关键驱动因素.
了解ecDNA机制对于开发新的癌症治疗方法至关重要.
在癌症诊断和治疗中,ecDNA具有显著的临床应用潜力.

关键词:

ecDNA,瘤异质性,耐药性,生物标志物,遗传学

更多相关视频

Genome-wide Purification of Extrachromosomal Circular DNA from Eukaryotic Cells

Genome-wide Purification of Extrachromosomal Circular DNA from Eukaryotic Cells

Published on: April 4, 2016

Author Spotlight: Transmitochondrial Cybrid Generation Using Cancer Cell Lines

Author Spotlight: Transmitochondrial Cybrid Generation Using Cancer Cell Lines

Published on: March 17, 2023

相关概念视频

Tumor Progression

Tumor Progression

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...

The Tumor Microenvironment

The Tumor Microenvironment

Every normal cell or tissue is embedded in a complex local environment called stroma, consisting of different cell types, a basal membrane, and blood vessels. As normal cells mutate and develop into cancer cells, their local environment also changes to allow cancer progression. The tumor microenvironment (TME) consists of a complex cellular matrix of stromal cells and the developing tumor. The cross-talk between cancer cells and surrounding stromal cells is critical to disrupt normal tissue...

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...

Non-LTR Retrotransposons

Non-LTR Retrotransposons

As the name suggests, non-LTR retrotransposons lack the long terminal repeats characteristic of the LTR retrotransposons. Additionally, both LTR and non-LTR retrotransposons use distinct mechanisms of mobilization. Non-LTR retrotransposons are further divided into two classes - Long interspersed nuclear elements (LINEs) and short interspersed nuclear elements (SINEs), both of which occur abundantly in most mammals, including humans. Some of the active non-LTR retrotransposons in humans are L1...

Mechanisms of Retrovirus-induced Cancers

Mechanisms of Retrovirus-induced Cancers

Retroviruses are RNA viruses that have been shown to cause cancers in diverse species, including chickens, mice, cats, and monkeys. The RNA genomes of these viruses are first reverse-transcribed into single and then double-stranded DNA (dsDNA) copies. This dsDNA called proviral DNA then integrates into the host genome. Subsequently, the host cell transcribes the proviral DNA in concert with the chromosomal DNA. This leads to the production of viral RNA and proteins that assemble at the host...

Metastasis

Metastasis

Metastasis is the spread of cancer cells from the original site to distant locations in the body. Cancer cells can spread via blood vessels (hematogenous) as well as lymph vessels in the body.
Epithelial-to-Mesenchymal Transition
The epithelial-to-mesenchymal transition or EMT is a developmental process commonly observed in wound healing, embryogenesis, and cancer metastasis. EMT is induced by transforming growth factor-beta (TGF-β) or receptor tyrosine kinase (RTK) ligands, which further...