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Ellagic acid inhibits EZH2: a potential epigenetic therapeutic molecule for cancer 鞣花酸抑制EZH2:一种潜在的癌症表观遗传治疗分子
IF 2.1 4区 医学 Q4 GENETICS & HEREDITY Pub Date : 2025-09-02 DOI: 10.1016/j.cancergen.2025.09.001
Kirankumar Nalla , Biji Chatterjee , Jagadeesha Poyya , Aishwarya Swain , Krishna Ghosh , Archana Pan , Chandrashekhar G Joshi , Bramanandam Manavathi , Santosh R Kanade

Background

Dysregulation of epigenetic processes, characterized by aberrant DNA methylation patterns and histone modifications, is a hallmark of cancer, driving its initiation, progression, and metastasis by silencing tumor suppressor genes or activating oncogenes. Perturbations in histone modifications such as H3K27me3 by EZH2 (Enhancer of Zeste homolog 2) play significant roles in these epigenetic alterations, disrupting normal gene expression and facilitating oncogene activation while suppressing tumor suppressor genes. Consequently, inhibitors targeting enzymes involved in DNA methylation, histone modification, or chromatin remodeling, such as PRC (Polycomb Repressive Complex) complexes, are promising anti-cancer agents, with several undergoing pre-clinical and clinical trials.

Study Design/ Methods

The molecular interaction of ellagic acid (EA) with EZH2 was determined by molecular docking using the Schrödinger suite. The binding of EA with EHZ2 was determined by Surface Plasmon Resonance and molecular dynamic simulation studies. In vitro methylation followed by ELISA confirmed the inhibitory potential. Effect of -EA- on the growth and proliferation of the cancer cell lines were determined using the MTT assay. The Ethidium Bromide & Acridine Orange (EB/AO) double staining, colony formation assay, cell cycle and apoptosis assays demonstrated the effect of EA. In vivo mouse xenografts revealed the anticancer potential of EA.

Results

Screening of a phytochemical library revealed EA as an effective inhibitor of EZH2. EA interacts strongly with the EZH2, binding to its active sites through π-cation interactions and hydrogen bonds. Molecular dynamic simulation and Surface Plasmon Resonance studies confirmed potent binding affinities of EA, with KD values of 3.28E-06. In-vitro assays validated inhibitory effects on EZH2 by reducing the H3K27me3 levels and induction of autophagy and apoptosis. In- vivo studies using mouse xenografts further demonstrated significant tumor size reductions upon oral administration of EA, with decreased expression of the proliferative marker Ki67 and histone repressive marks.

Conclusion

Taken together we showed that inhibition of EZH2 by EA could be used to develop breast cancer therapeutic drug.
表观遗传过程的失调,以异常的DNA甲基化模式和组蛋白修饰为特征,是癌症的一个标志,通过沉默肿瘤抑制基因或激活癌基因来驱动其发生、进展和转移。EZH2(增强子Zeste同源物2)对组蛋白修饰如H3K27me3的扰动在这些表观遗传改变中发挥重要作用,破坏正常基因表达,促进癌基因激活,同时抑制肿瘤抑制基因。因此,靶向参与DNA甲基化、组蛋白修饰或染色质重塑的酶的抑制剂,如PRC (Polycomb suppressupprescomplex)复合物,是很有前途的抗癌药物,其中一些正在进行临床前和临床试验。研究设计/方法采用Schrödinger软件对鞣花酸(EA)与EZH2的分子相互作用进行分子对接。通过表面等离子体共振和分子动力学模拟研究确定了EA与EHZ2的结合。体外甲基化和酶联免疫吸附测定证实了其抑制潜能。采用MTT法测定- ea -对肿瘤细胞株生长和增殖的影响。溴化乙啶和吖啶橙(EB/AO)双染色、菌落形成实验、细胞周期和细胞凋亡实验均证实了EA的作用,并在小鼠体内异种移植实验中显示了EA的抗癌潜力。EA与EZH2相互作用强烈,通过π-阳离子相互作用和氢键结合到EZH2的活性位点。分子动力学模拟和表面等离子体共振研究证实了EA的强结合亲和力,KD值为3.28E-06。体外实验通过降低H3K27me3水平,诱导自噬和凋亡,证实了对EZH2的抑制作用。使用小鼠异种移植物的体内研究进一步表明,口服EA后肿瘤大小明显减小,增殖标记Ki67和组蛋白抑制标记的表达降低。结论EA对EZH2的抑制作用可用于开发乳腺癌治疗药物。
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引用次数: 0
Genetic silencing of CDC6 via AAV2-Delivered shRNA as a novel cancer genetics-based therapy for cervical carcinoma. 通过aav2递送的shRNA基因沉默CDC6作为宫颈癌的一种新的癌症遗传学治疗方法。
IF 2.1 4区 医学 Q4 GENETICS & HEREDITY Pub Date : 2025-09-01 Epub Date: 2025-08-05 DOI: 10.1016/j.cancergen.2025.08.001
Yajie Wang, Xiaofeng Li, Xiaoying Lian, Baihai Huang, Jing Jia, Changjun Zhu

Background: Cell division cycle 6 (Cdc6) is an oncogenic driver in cervical cancer, whose dysregulation accelerates S-phase entry and promotes genomic instability. As a key replication licensing factor, its overexpression creates a cancer-specific vulnerability, making it a promising therapeutic target.

Objective: To evaluate whether silencing Cdc6 via an adeno-associated virus serotype 2 (AAV2)-delivered shRNA can selectively inhibit cervical cancer growth while sparing normal cells.

Methods: We constructed an AAV2 vector encoding short hairpin RNA (shRNA) targeting Cdc6 and validated its efficacy in vitro using multiple cervical cancer cell lines and an immortalized epithelial cell line (HaCaT). Functional assays assessed cell cycle progression, apoptosis, and DNA damage. Antitumor efficacy was further assessed in xenograft mouse models.

Results: AAV2-shCdc6 transduction efficiently silenced Cdc6 expression, leading to G2/M phase arrest, increased γ-H2AX expression, and significant apoptosis in cervical cancer cells. In contrast, normal HaCaT cells exhibited only S-phase arrest without apoptosis. In vivo, AAV2-shCdc6 treatment significantly inhibited tumor growth in xenograft models without observable systemic toxicity.

Conclusion: AAV2-mediated Cdc6 knockdown selectively targets cervical cancer by exploiting a defined genetic vulnerability. This cancer genetics-based strategy offers a precise and well-tolerated approach for cervical cancer therapy.

背景:细胞分裂周期6 (Cdc6)是宫颈癌的致癌驱动因子,其失调加速s期进入并促进基因组不稳定。作为一个关键的复制许可因子,它的过度表达产生了一种癌症特异性的脆弱性,使其成为一个有希望的治疗靶点。目的:评价通过腺相关病毒血清2型(AAV2)递送的shRNA沉默Cdc6是否能选择性地抑制宫颈癌的生长,同时保留正常细胞。方法:构建靶向Cdc6的短发夹RNA (short hairpin RNA, shRNA) AAV2载体,并利用多种宫颈癌细胞系和永生化上皮细胞系(HaCaT)体外验证其有效性。功能分析评估细胞周期进展、细胞凋亡和DNA损伤。在异种移植小鼠模型中进一步评估抗肿瘤效果。结果:AAV2-shCdc6转导能有效抑制Cdc6的表达,导致宫颈癌细胞G2/M期阻滞,γ-H2AX表达增加,凋亡显著。相比之下,正常HaCaT细胞仅表现为s期阻滞,无凋亡。在体内,AAV2-shCdc6治疗显著抑制异种移植模型的肿瘤生长,无明显的全身毒性。结论:aav2介导的Cdc6基因敲低通过利用一种明确的遗传易感性选择性靶向宫颈癌。这种基于癌症遗传学的策略为宫颈癌治疗提供了一种精确且耐受性良好的方法。
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引用次数: 0
Comprehensive analysis of oncogenic determinants across tumor types via multi-omics integration 通过多组学整合对不同肿瘤类型的致癌决定因素进行综合分析
IF 2.1 4区 医学 Q4 GENETICS & HEREDITY Pub Date : 2025-08-29 DOI: 10.1016/j.cancergen.2025.08.010
Saba Ubaid , Rashmi Kushwaha , Mohammad Kashif , Vivek Singh
Cancer is a complex and heterogeneous disease characterized by the accumulation of genetic and epigenetic alterations that drive uncontrolled cellular proliferation and survival. This review provides a comprehensive overview of key cancer driver genes, including oncogenes such as KRAS and PIK3CA, as well as tumor suppressor genes like TP53, PTEN, and CDKN2A, highlighting their molecular mechanisms and roles across various types of cancer. Leveraging insights from large-scale cancer genome initiatives and whole-genome sequencing, we examine the landscape of somatic mutations and their association with hallmark cancer pathways, including cell cycle regulation, apoptosis, metabolic reprogramming, and immune evasion. Multi-omics integration—encompassing genomic, transcriptomic, proteomic, and epigenomic data has enabled the identification of novel driver mutations, functional interactions, and tumor-specific vulnerabilities. We explore bioinformatics platforms, such as IntOGen, that facilitate the detection and prioritization of driver genes and discuss emerging concepts, including synthetic lethality, chromatin remodeling defects, and epigenetic dysregulation, involving genes like ARID1A, KMT2D, and RB1. Furthermore, we review therapeutic strategies targeting these molecular aberrations, including small-molecule inhibitors, pathway-based therapies, and precision oncology approaches guided by biomarkers. This synthesis underscores the importance of integrating multidimensional data to enhance our understanding of cancer biology and refine personalized treatment strategies for improved patient outcomes.
癌症是一种复杂的异质性疾病,其特征是遗传和表观遗传改变的积累,这些改变驱动不受控制的细胞增殖和生存。本文综述了主要的癌症驱动基因,包括癌基因如KRAS和PIK3CA,以及肿瘤抑制基因如TP53、PTEN和CDKN2A,重点介绍了它们在不同类型癌症中的分子机制和作用。利用大规模癌症基因组计划和全基因组测序的见解,我们研究了体细胞突变的景观及其与标志性癌症途径的关联,包括细胞周期调节、细胞凋亡、代谢重编程和免疫逃避。包括基因组、转录组、蛋白质组和表观基因组数据在内的多组学整合能够识别新的驱动突变、功能相互作用和肿瘤特异性脆弱性。我们探索生物信息学平台,如IntOGen,促进驱动基因的检测和优先排序,并讨论新兴概念,包括合成致死率,染色质重塑缺陷和表观遗传失调,涉及基因如ARID1A, KMT2D和RB1。此外,我们回顾了针对这些分子畸变的治疗策略,包括小分子抑制剂,基于途径的治疗,以及由生物标志物指导的精确肿瘤学方法。这种综合强调了整合多维数据的重要性,以增强我们对癌症生物学的理解,并改进个性化治疗策略,以改善患者的预后。
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引用次数: 0
The role of miR-10b-5p in prostate cancer and its exosome-mediated angiogenesis effect miR-10b-5p在前列腺癌中的作用及其外泌体介导的血管生成作用
IF 2.1 4区 医学 Q4 GENETICS & HEREDITY Pub Date : 2025-08-27 DOI: 10.1016/j.cancergen.2025.08.009
Jia Wang , Chuan Zhou , Qi-dong Wang , Wen-bo Zhang , Chao Wang , Yun-Feng Zhang , Hao-Xuan Lv , Feng-Hai Zhou

Objective

Prostate cancer (PCa) continues to be a major cause of cancer-related mortality globally, underscoring the critical need for novel therapeutic strategies. This study investigates the oncogenic function of miR-10b-5p in PCa progression and evaluates its potential as both a diagnostic marker and therapeutic target.

Methods

miR-10b-5p was initially identified as a candidate oncogene through bioinformatic analysis of The Cancer Genome Atlas (TCGA) PCa data, followed by validation of its expression levels in clinical PCa specimens via fluorescence in situ hybridization (FISH). Functional assays (proliferation, migration, invasion) were performed to assess the impact of miR-10b-5p on PCa cell behavior. The tumor suppressor ZMYND11 was confirmed as a direct target of miR-10b-5p using dual-luciferase reporter assays. The pro-angiogenic capacity of PCa-derived exosomes harboring miR-10b-5p was evaluated using in vitro endothelial tube formation assays and in vivo mouse models.

Results

miR-10b-5p expression was significantly elevated in PCa tissues and cell lines, and its levels correlated with aggressive tumor features. Mechanistically, miR-10b-5p directly suppressed ZMYND11 expression, thereby promoting PCa cell proliferation, migration, and invasion. Crucially, exosomes derived from miR-10b-5p-expressing PCa cells exhibited potent pro-angiogenic activity, significantly enhancing endothelial tube formation in vitro and stimulating tumor neovascularization in vivo.

Conclusion

This study demonstrates that miR-10b-5p promotes prostate cancer progression by targeting ZMYND11, while its exosomes additionally exhibit pro-angiogenic effects, providing a novel therapeutic target for clinical intervention.
前列腺癌(PCa)仍然是全球癌症相关死亡的主要原因,强调了对新型治疗策略的迫切需要。本研究探讨了miR-10b-5p在前列腺癌进展中的致癌功能,并评估了其作为诊断标志物和治疗靶点的潜力。方法通过对癌症基因组图谱(TCGA) PCa数据的生物信息学分析,初步确定smir -10b-5p为候选癌基因,随后通过荧光原位杂交(FISH)验证其在临床PCa标本中的表达水平。通过功能分析(增殖、迁移、侵袭)评估miR-10b-5p对PCa细胞行为的影响。通过双荧光素酶报告基因检测,肿瘤抑制因子ZMYND11被证实是miR-10b-5p的直接靶点。通过体外内皮管形成实验和体内小鼠模型评估含有miR-10b-5p的pca衍生外泌体的促血管生成能力。结果smir -10b-5p在前列腺癌组织和细胞系中表达显著升高,其表达水平与肿瘤侵袭性特征相关。在机制上,miR-10b-5p直接抑制ZMYND11的表达,从而促进PCa细胞的增殖、迁移和侵袭。至关重要的是,来自表达mir -10b-5p的PCa细胞的外泌体表现出强大的促血管生成活性,在体外显著增强内皮管的形成,并在体内刺激肿瘤新生血管。结论本研究表明miR-10b-5p通过靶向ZMYND11促进前列腺癌进展,同时其外泌体还具有促血管生成作用,为临床干预提供了新的治疗靶点。
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引用次数: 0
Dramatic multifocal osteosarcoma treatment response in the setting of POT1 tumor predisposition syndrome POT1肿瘤易感综合征背景下多灶性骨肉瘤的戏剧性治疗反应
IF 2.1 4区 医学 Q4 GENETICS & HEREDITY Pub Date : 2025-08-25 DOI: 10.1016/j.cancergen.2025.08.008
Stephen Gilene , Kristen D'Aquila , Brittany Cooper , Sara Szabo , Joseph G. Pressey
INTRODUCTION: POT1 tumor predisposition (POT1-TPD) is associated with a spectrum of malignancies due to loss of function mutations in POT1 leading to telomere elongation and genomic instability. Osteosarcoma is the most common primary malignant bone tumor and has a poor prognosis when multifocal. CASE PRESENTATION: A 15-year-old male was found to have a primary right distal femur osteosarcoma with multiple additional bony sites of disease. A POT1 splice site variant (c.949+1G>C) was identified both somatically and in the germline consistent with POT1-TPD. Despite extensive multifocality, the tumor displayed marked chemosensitivity to standard of care therapy and long-term remission was achieved. DISCUSSION: Evidence suggests that hereditable alterations in telomeric function including POT1 are enriched in sarcoma susceptibility. Furthermore, hereditary tumor predisposition syndromes often increase osteosarcoma risk including a recent report of five patients with POT1-TPD. Multifocal osteosarcoma is rare, but a few retrospective cohorts suggest dismal prognosis. This report details an adolescent male with presumed POT1-TPD who developed synchronous multifocal osteosarcoma exquisitely sensitive to chemotherapy which may represent a unique phenotype for the syndrome.
POT1肿瘤易感性(POT1- tpd)与一系列恶性肿瘤相关,这是由于POT1的功能突变丧失导致端粒延长和基因组不稳定。骨肉瘤是最常见的原发性骨恶性肿瘤,多灶性骨肉瘤预后较差。病例介绍:一名15岁的男性被发现患有原发性右股骨远端骨肉瘤,并伴有多处其他骨部位的疾病。在体细胞和种系中均鉴定出与POT1- tpd一致的POT1剪接位点变异(C .949+1G>;C)。尽管有广泛的多灶性,但肿瘤对标准护理治疗显示出明显的化疗敏感性,并实现了长期缓解。讨论:有证据表明,端粒功能的可遗传改变,包括POT1,在肉瘤易感性中富集。此外,遗传性肿瘤易感性综合征经常增加骨肉瘤的风险,包括最近报道的5例POT1-TPD患者。多灶性骨肉瘤是罕见的,但一些回顾性队列提示预后不佳。本报告详细介绍了一例假定为POT1-TPD的青少年男性,他发展为同步多灶性骨肉瘤,对化疗非常敏感,这可能代表了该综合征的独特表型。
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引用次数: 0
Unraveling complex karyotype clonal architecture: co-existing double TP53 mutations alongside DNMT3A, TET2, and NF1 mutations – a case study 解开复杂核型克隆结构:双TP53突变与DNMT3A, TET2和NF1突变共存-一个案例研究
IF 2.1 4区 医学 Q4 GENETICS & HEREDITY Pub Date : 2025-08-22 DOI: 10.1016/j.cancergen.2025.08.007
Suhaib Mohammad Ali Abunaser , Anurita Pais , Manu Venkatesan , Uzma Zaidi , Cigdem Pala Ozturk
Complex chromosomal changes in Acute Myeloid Leukemia (AML) are highly heterogeneous, with disease progression shaped by both the number and nature of abnormalities. Rarely do, multiple unrelated clones with independent chromosomal changes coexist at diagnosis.
Present study showcases a comprehensive characterization of two cytogenetically distinct complex clones in AML, driven by non-cyclic and chromoplexy mechanisms, highlighting their co-existence with key molecular alterations (TP53, NF1, DNMT3A, TET2) along with their potential contribution to clonal evolution.
In the present study a refined assessment of clonal chromosomal complexity is provided, with each clone exhibiting distinct alterations involving chromosomes 5, 14, and 17 along with variant structural formation of chromosomes ie. isochromosome 5p, partial monosomy 7 and derivative 17, defining the heterogeneity of clonal architecture.
Additionally, we propose a probable association between mutational burden and chromosomal complexity, as evidenced by the coexistence of distinct clones with varying mutation loads and cytogenetic profiles, reflecting parallel clonal evolution.
Our integrated approach combining karyotyping and fluorescence in situ hybridization (FISH) was essential in unraveling the clonal architecture, providing valuable insights into the personalized chromosomal alterations and pathogenetic mechanisms that would be helpful for refining prognosis and guiding AML management.
急性髓性白血病(AML)的复杂染色体变化是高度异质性的,疾病进展由异常的数量和性质决定。在诊断时,具有独立染色体变化的多个不相关克隆共存的情况非常罕见。本研究展示了AML中两个细胞遗传学上不同的复杂克隆的全面特征,由非循环和色plexy机制驱动,突出了它们与关键分子改变(TP53, NF1, DNMT3A, TET2)的共存以及它们对克隆进化的潜在贡献。在目前的研究中,提供了克隆染色体复杂性的精细评估,每个克隆都表现出涉及染色体5、14和17的不同改变,以及染色体的不同结构形成。同染色体5p,部分单体7和衍生物17,定义克隆结构的异质性。此外,我们提出突变负担与染色体复杂性之间可能存在关联,这可以通过具有不同突变负荷和细胞遗传学谱的不同克隆共存来证明,这反映了平行克隆进化。我们结合核型和荧光原位杂交(FISH)的综合方法对于揭示克隆结构至关重要,为个性化染色体改变和发病机制提供了有价值的见解,有助于改善预后和指导AML管理。
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引用次数: 0
A novel fumarate hydratase frameshift mutation in lung adenocarcinoma: A case report 肺腺癌中一种新的富马酸水合酶移码突变:1例报告
IF 2.1 4区 医学 Q4 GENETICS & HEREDITY Pub Date : 2025-08-16 DOI: 10.1016/j.cancergen.2025.08.006
Haruko Nakagawa , Satoru Aoyama , Junko Yokobori , Haruhiko Furusawa , Takahiro Mitsumura , Akira Takemoto , Ken Yamagiwa , Masaaki Kawanishi , Yasunari Miyazaki , Sadakatsu Ikeda
Fumarate hydratase (FH) is a tumor suppressor gene implicated in the tumorigenesis of several cancers, including renal cell carcinoma. However, FH mutations are uncommon in lung adenocarcinoma, and frameshift deletions are exceedingly rare. Here, we report a novel FH frameshift mutation (G97fs*3) in a 67-year-old woman with lung adenocarcinoma. The mutation was detected through comprehensive genomic profiling. It occurs within the catalytic domain of FH and has not been previously reported in this cancer type. A literature review revealed that FH mutations are oncogenic in hereditary leiomyomatosis and renal cell cancer, suggesting that the frameshift mutation could also serve as a driver mutation in this case. This report highlights the utility of comprehensive genomic profiling in identifying clinically relevant mutations and demonstrates the potential of leveraging such insights for precision oncology. FH alterations, such as the one described, could represent potential therapeutic targets from molecular perspectives.
富马酸水合酶(FH)是一种肿瘤抑制基因,与包括肾细胞癌在内的几种癌症的肿瘤发生有关。然而,FH突变在肺腺癌中并不常见,移码缺失也极为罕见。在这里,我们报告了一个新的FH移码突变(G97fs*3)在一个67岁的女性肺腺癌。该突变是通过全面的基因组分析检测到的。它发生在FH的催化区域内,以前没有在这种癌症类型中报道过。文献综述显示,FH突变在遗传性平滑肌瘤病和肾细胞癌中具有致癌作用,提示移码突变也可能是这种情况下的驱动突变。本报告强调了综合基因组图谱在确定临床相关突变方面的效用,并展示了利用这种见解进行精确肿瘤学的潜力。从分子的角度来看,FH的改变,如所描述的,可能代表潜在的治疗靶点。
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引用次数: 0
Unfavorable disease progression in patients with chronic myeloid leukemia and concurrent t(6;9) translocation (DEK::NUP214 fusion) or inversion 16 (CBFB::MYH11 fusion) 慢性髓性白血病患者的不利疾病进展和并发t(6;9)易位(DEK::NUP214融合)或倒位16 (CBFB::MYH11融合)
IF 2.1 4区 医学 Q4 GENETICS & HEREDITY Pub Date : 2025-08-16 DOI: 10.1016/j.cancergen.2025.08.004
Ying Zhang , Jack Reid , Deepa Jeyakumar , Kapitolina Semenova , Naqvi Kiran , Lisa Lee , Angela Fleishman , Sherif Rezk , Xiaohui Zhao , Fabiola Quintero-Rivera
The occurrence of additional specific chromosomal abnormalities in Philadelphia chromosome-positive (pH+) cells is associated with disease progression in chronic myeloid leukemia (CML), and is considered a marker that defines the accelerated/blast phase of CML. Both DEK::NUP214 fusion and CBFB rearrangement are extremely rare in CML, and their prognostic significance is unknown. Here we present two CML cases, with one case having concurrent translocation 6;9 [t(6;9)] leading to DEK::NUP214 fusion, and the other one presenting with concurrent inversion 16 -inv(16)- leading to CBFB::MYH11 fusion. The t(6;9) is usually associated with poor prognosis in acute myeloid leukemia (AML) patients. In this case, the patient failed to achieve remission and expired. This suggests that the t(6;9) is also associated with poor prognosis in CML. However, more data is needed to verify this association. Detection of inv(16) by karyotyping is technically challenging. In addition, FISH for CBFB is not usually run in the context of CML, thus raising the possibility that similar cases may have been underdiagnosed. With the routine use of next-generation sequencing (NGS) for gene fusion detection, more patients like this one should be diagnosed and treated accordingly. These cases illustrate the importance of a comprehensive molecular/cytogenetic diagnostic work-up.
费城染色体阳性(pH+)细胞中额外特异性染色体异常的发生与慢性髓性白血病(CML)的疾病进展相关,并且被认为是定义CML加速/母细胞期的标志物。DEK::NUP214融合和CBFB重排在CML中极为罕见,其预后意义尚不清楚。在这里,我们提出两个CML病例,其中一个病例有并发易位6;9 [t(6;9)]导致DEK::NUP214融合,另一个同时呈现倒置16 -inv(16)-导致CBFB::MYH11融合。在急性髓性白血病(AML)患者中,t(6;9)常与预后不良相关。在这种情况下,患者未能达到缓解并死亡。这表明t(6;9)也与CML预后不良有关。然而,需要更多的数据来验证这种关联。通过核型检测inv(16)在技术上具有挑战性。此外,CBFB的FISH通常不会在CML的背景下进行,从而增加了类似病例可能被误诊的可能性。随着新一代测序(NGS)技术在基因融合检测中的常规应用,更多像这样的患者应该得到相应的诊断和治疗。这些病例说明了全面的分子/细胞遗传学诊断检查的重要性。
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引用次数: 0
High YEATS4 expression characterizes MDM2-amplified liposarcoma YEATS4高表达是mdm2扩增型脂肪肉瘤的特征
IF 2.1 4区 医学 Q4 GENETICS & HEREDITY Pub Date : 2025-08-14 DOI: 10.1016/j.cancergen.2025.08.005
Andrea Mariani , Mika Sampo , Harri Sihto , Tom Böhling , Omar Youssef
YEATS4 resides within the 12q13–15 chromosomal region, where it is frequently co-amplified with MDM2 and CDK4 in liposarcomas (LPS). However, its independent role in LPS progression and dedifferentiation remains poorly defined. In this study, YEATS4 expression was analyzed in 57 formalin-fixed paraffin-embedded (FFPE) LPS samples using quantitative real-time PCR and compared across histological subtypes. MDM2 amplification status was determined by fluorescence in situ hybridization (FISH). The functional relevance of YEATS4 was assessed via siRNA-mediated knockdown in two well-differentiated LPS (WDLPS) cell lines, GOT-3 and 93T449. Relative YEATS4 mRNA expression was significantly higher in MDM2-positive compared to MDM2-negative tumors (median = 0.413 vs. 0.007; p = 0.008). Using the median YEATS4 expression value (0.227) – calculated from WDLPS and DDLPS cases only – as a threshold, high YEATS4 expression was observed in 64% of high-grade dedifferentiated LPS (DDLPS), 54% of low-grade DDLPS, and 29% of WDLPS cases (p = 0.302). Functionally, YEATS4 silencing significantly reduced cell viability in 93T449 cells at Days 5 (24.1%) and Day 7 (22.1%) compared to control (p < 0.001). In GOT3 cells, a slight reduction was noted at Day 3 (7.6%) which was not sustained. In summary, YEATS4 could contribute to LPS progression in a subset of MDM2-amplified tumors, particularly in high-grade DDLPS. Its variable functional impact across models highlights the complexity of the 12q13–15 amplicon and supports further investigation into YEATS4 as a potential molecular marker and therapeutic target in LPS.
YEATS4位于12q13-15染色体区域,在脂肉瘤(LPS)中,它经常与MDM2和CDK4共同扩增。然而,其在LPS进展和去分化中的独立作用仍不明确。在本研究中,采用实时荧光定量PCR分析了57份福尔马林固定石蜡包埋(FFPE) LPS样品中YEATS4的表达,并比较了不同组织学亚型。采用荧光原位杂交法(FISH)检测MDM2扩增状态。在两种分化良好的脂多糖(WDLPS)细胞系GOT-3和93T449中,通过sirna介导的敲低来评估YEATS4的功能相关性。与mdm2阴性肿瘤相比,mdm2阳性肿瘤中YEATS4 mRNA的相对表达量显著升高(中位数= 0.413 vs. 0.007; p = 0.008)。使用YEATS4中位表达值(0.227)(仅从WDLPS和DDLPS病例计算)作为阈值,在64%的高级别去分化LPS (DDLPS)、54%的低级别DDLPS和29%的WDLPS病例中观察到高水平的YEATS4表达(p = 0.302)。在功能上,与对照组相比,YEATS4沉默显著降低了93T449细胞在第5天(24.1%)和第7天(22.1%)的细胞活力(p < 0.001)。在GOT3细胞中,在第3天注意到轻微的减少(7.6%),但没有持续。总之,YEATS4可能在mdm2扩增的肿瘤亚群中促进LPS进展,特别是在高级别DDLPS中。它在不同模型中的不同功能影响突出了12q13-15扩增子的复杂性,并支持进一步研究YEATS4作为LPS的潜在分子标记和治疗靶点。
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引用次数: 0
The impact of extracellular vesicles on breast cancer metastasis and therapeutics: genetic considerations 细胞外囊泡对乳腺癌转移和治疗的影响:遗传学考虑
IF 2.1 4区 医学 Q4 GENETICS & HEREDITY Pub Date : 2025-08-12 DOI: 10.1016/j.cancergen.2025.08.003
Leila Jahangiri
Breast cancer is a significant health problem across the world, and a better understanding of the cellular and molecular properties of the microenvironment in which the breast cancer cells reside is paramount. Breast cancer cells exhibit an intricate bilateral interaction with the tumour microenvironment, which can contribute to tumour progression. This tumour microenvironment comprises a host of proteins, proteoglycans, glycoproteins, signalling molecules, stromal and immune cells, in addition to extracellular vesicles. Extracellular vesicles encompass a range of vesicles that facilitate cell-to-cell communication and signal relay. Examples of these extracellular vesicles include microvesicles, exosomes and apoptotic bodies. Other categorisations divide extracellular vesicles into exosomes and ectosomes based on their biogenesis. The content of extracellular vesicles can be DNA, RNA, miRNA, proteins, glycans and lipids. This content can affect the tumour microenvironment and tumour metastasis and progression. As such, this review article aims to understand the content of extracellular vesicles and those that promote invasion and metastasis in the context of the tumour microenvironment. The implications of these extracellular vesicles for breast cancer therapeutics will be addressed. Finally, the genes indicated in these processes will be discussed.
乳腺癌是全世界的一个重大健康问题,更好地了解乳腺癌细胞所在的微环境的细胞和分子特性至关重要。乳腺癌细胞与肿瘤微环境表现出复杂的双边相互作用,这可能有助于肿瘤的进展。这种肿瘤微环境包括大量蛋白质、蛋白聚糖、糖蛋白、信号分子、基质细胞和免疫细胞,以及细胞外囊泡。细胞外囊泡包括一系列促进细胞间通讯和信号传递的囊泡。这些细胞外囊泡的例子包括微囊泡、外泌体和凋亡小体。其他分类根据其生物起源将细胞外囊泡分为外泌体和外泌体。细胞外囊泡的内容可以是DNA、RNA、miRNA、蛋白质、聚糖和脂质。该物质可以影响肿瘤微环境和肿瘤的转移和进展。因此,这篇综述文章旨在了解肿瘤微环境中细胞外囊泡的内容以及那些促进侵袭和转移的细胞外囊泡。这些细胞外囊泡对乳腺癌治疗的意义将被讨论。最后,将讨论在这些过程中所显示的基因。
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Cancer Genetics
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