病例报告:CHD4中的新突变引发了带有骨转移的隐性乳腺癌
Hang Dong1, Jingtong Zhao2, Boyin Zhang3
1Department of Traumatic Orthopedics, Jilin University China-Japan Union Hospital, Changchun, China.
Frontiers in oncology
|October 15, 2025
概括
在转移性乳腺癌中发现了一种新的CHD4基因突变,破坏了表观遗传调节,并可能增强基因激活. 这一发现可能会将受损的染色质重塑与癌症进展联系起来.
科学领域:
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 癌症生物学 癌症生物学
- 分子瘤学分子瘤学
背景情况:
- 染色体域结合蛋白4 (CHD4) 对于表观遗传调节至关重要,通过NuRD复合体控制基因沉默和激活.
- 表观遗传调节者的突变与癌症的发展和进展有关.
研究的目的:
- 在患有隐性乳腺癌和广泛骨转移的患者中报告CHD4的新体突变.
- 为了研究发现的CHD4突变对ATPase活性和NuRD复合体组合的功能后果.
- 探索CHD4突变,染色质重塑和转移性乳腺癌进展之间的潜在联系.
主要方法:
- 隐藏乳腺癌与骨转移的病例报告.
- 整体外因子测序以识别体质突变.
- 功能性测试以评估CHD4 ATPase活性和NuRD复合体完整性.
- 多模式分析包括PET/CT,生物标志物评估和组织病理学.
主要成果:
- 在CHD4.4的SNF2域中发现了一种新的体质截断突变 (CHD4 p.Trp736Ter).
- 这种突变取消了CHD4 ATPase的活性,并破坏了NuRD复合体的组合.
- 患者的瘤被证实为光线A亚型,并且对内分泌治疗有显著的反应.
- 这种突变是新的,以前没有在其他癌症中报告过.
结论:
- 鉴定的CHD4突变可能会改变其双重调节作用,可能有利于激活基因的功能.
- 由于这种突变而导致的染色质重塑受损,假设与转移性乳腺癌的进展有关.
- 这一案例凸显了CHD4在乳腺癌转移和治疗反应中的潜在作用.
相关概念视频
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...
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...
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...
Mismatch Repair
Organisms are capable of detecting and fixing nucleotide mismatches that occur during DNA replication. This sophisticated process requires identifying the new strand and replacing the erroneous bases with correct nucleotides. Mismatch repair is coordinated by many proteins in both prokaryotes and eukaryotes.
The Mutator Protein Family Plays a Key Role in DNA Mismatch Repair
The human genome has more than 3 billion base pairs of DNA per cell. Prior to cell division, that vast amount of genetic...
The Mutator Protein Family Plays a Key Role in DNA Mismatch Repair
The human genome has more than 3 billion base pairs of DNA per cell. Prior to cell division, that vast amount of genetic...


