OS

骨坏死
  • 文章类型: Journal Article
    转移是骨肉瘤(OS)中癌症相关死亡的主要原因。OS干细胞(OSCs)和失巢凋亡抗性被认为是肿瘤转移形成所必需的。然而,干细胞表型的维持和OS中的失巢凋亡抗性所涉及的潜在机制大多是未知的.Fos样抗原1(FOSL1)对于在各种癌症中维持茎样表型很重要;然而,其在OSCs和抗肛门凋亡中的作用尚不清楚.在本研究中,在使用RNA测序获得癌症干细胞样特性的过程中,研究了FOSL1的动态表达模式,PCR,蛋白质印迹和免疫荧光。流式细胞术,肿瘤球的形成,克隆形成测定,失巢分解试验,使用蛋白质印迹和体内异种移植和转移模型来进一步研究OS细胞系中干细胞表型和失巢凋亡抗性对FOSL1过表达或沉默的反应。评估了潜在的分子机制,重点关注SOX2是否与OS中的FOSL1介导的干性和anoikis至关重要。观察到FOSL1表达在OSC中上调并促进肿瘤球形成,OS细胞中的克隆形成和肿瘤发生。FOSL1表达与干性相关因子(SOX2,NANOG,CD117和Stro1)。此外,FOSL1通过调节凋亡相关蛋白BCL2和BAX的表达,促进OS细胞抗失巢凋亡,促进转移。机械上,FOSL1通过与SOX2启动子相互作用并激活其转录来上调SOX2表达。结果还表明,SOX2对于FOSL1介导的茎样特性和抗肛门凋亡性至关重要。目前的发现表明,FOSL1是一种重要的调节因子,可通过调节SOX2的转录来促进干细胞样表型和失巢凋亡抗性,从而促进OS中的肿瘤发生和转移。因此,FOSL1可能是OS治疗干预的一个有吸引力的目标。
    Metastasis is the leading cause of cancer‑related death in osteosarcoma (OS). OS stem cells (OSCs) and anoikis resistance are considered to be essential for tumor metastasis formation. However, the underlying mechanisms involved in the maintenance of a stem‑cell phenotype and anoikis resistance in OS are mostly unknown. Fos‑like antigen 1 (FOSL1) is important in maintaining a stem‑like phenotype in various cancers; however, its role in OSCs and anoikis resistance remains unclear. In the present study, the dynamic expression patterns of FOSL1 were investigated during the acquisition of cancer stem‑like properties using RNA sequencing, PCR, western blotting and immunofluorescence. Flow cytometry, tumor‑sphere formation, clone formation assays, anoikis assays, western blotting and in vivo xenograft and metastasis models were used to further investigate the responses of the stem‑cell phenotype and anoikis resistance to FOSL1 overexpression or silencing in OS cell lines. The underlying molecular mechanisms were evaluated, focusing on whether SOX2 is crucially involved in FOSL1‑mediated stemness and anoikis in OS. FOSL1 expression was observed to be upregulated in OSCs and promoted tumor‑sphere formation, clone formation and tumorigenesis in OS cells. FOSL1 expression correlated positively with the expression of stemness‑related factors (SOX2, NANOG, CD117 and Stro1). Moreover, FOSL1 facilitated OS cell anoikis resistance and promoted metastases by regulating the expression of apoptosis related proteins BCL2 and BAX. Mechanistically, FOSL1 upregulated SOX2 expression by interacting with the SOX2 promoter and activating its transcription. The results also showed that SOX2 is critical for FOSL1‑mediated stem‑like properties and anoikis resistance. The current findings indicated that FOSL1 is an important regulator that promotes a stem cell‑like phenotype and anoikis resistance to facilitate tumorigenesis and metastasis in OS by regulating the transcription of SOX2. Thus, FOSL1 might represent an attractive target for therapeutic interventions in OS.
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  • 文章类型: Journal Article
    背景:接受新辅助放化疗后,可切除的胃食管癌(GEC)中检查的淋巴结数量将减少,这可能无法准确确定N分期。因此,我们的研究基于接受新辅助放化疗后GEC患者淋巴结阳性对数几率(LODDS)评估了新分期模型的临床意义。
    方法:从2004年至2019年,共有1130例经病理诊断的GEC患者接受了新辅助放化疗,纳入了美国国家癌症研究所的监测,流行病学,选择结果(SEER)数据库进行分析。淋巴结根据AJCCTNM分期系统(第8版)和LODDS分期。通过Kaplan-Meier方法评估两个系统的患者预后,通过Akaike信息准则和贝叶斯信息准则评估节点分期的差异。此外,我们中心的914名患者进行了外部验证。
    结果:与传统的TNM分期系统相比,新的TLODDSM分期系统由第一阶段组成,第二阶段,IIIA阶段,IIIB阶段,和阶段IVA,和决策曲线分析表明,新的分期系统比旧的分期系统在不同决策阈值下具有更高的收益。新分期系统的Akaike信息准则和贝叶斯信息准则低于旧分期系统,提示TLODDSM分期系统预测患者预后的敏感性较高。此外,新分期系统中的IIIB期或-IVA期患者受益于辅助化疗。我们中心的外部验证数据支持这一结论。
    结论:与TNM分期系统相比,TLODDSM分期系统在预测完成新辅助放化疗的GEC患者的预后方面具有显著优势,指导患者辅助化疗。
    BACKGROUND: After receiving neoadjuvant chemoradiation, the number of examined lymph nodes in resectable gastroesophageal cancer (GEC) will decrease, this may not accurately determine the N staging. So our study evaluates the clinical significance of a new staging model based on the logarithmic odds of positive lymph nodes (LODDS) in patients with GEC after receiving neoadjuvant chemoradiation.
    METHODS: A total of 1 130 patients with pathologically diagnosed GEC who received neoadjuvant chemoradiation from 2004 to 2019 included in the National Cancer Institute Surveillance, Epidemiology, and Results (SEER) database were selected for analysis. Lymph nodes were staged according to the AJCC TNM staging system (eighth edition) and LODDS. Patient prognosis across the two systems were evaluated by the Kaplan-Meier method, differences in node staging were evaluated by the Akaike information criterion and Bayesian information criterion. In addition, 914 patients from our center were externally validated.
    RESULTS: Compared to the traditional TNM staging system, the new TLODDSM staging system was comprised of stage I, stage II, stage IIIA, stage IIIB, and stage IVA, and decision curve analysis showed that the new staging system had higher benefits for different decision thresholds than the old staging system. The Akaike information criterion and Bayesian information criterion of the new staging system was lower than those of the old staging system, indicating the sensitivity of the TLODDSM staging system for predicting the prognosis of patients was higher. In addition, stage-IIIB or -IVA patients in the new staging system benefited from adjuvant chemotherapy. The externally validated data from our center supported this conclusion.
    CONCLUSIONS: Compared to the TNM staging system, the TLODDSM staging system has significant advantages in predicting prognosis of patients with GEC who have completed neoadjuvant chemoradiation, guiding the adjuvant chemotherapy for patients.
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  • 文章类型: Journal Article
    活性氧(ROS)被广泛认为是信号分子,在各种细胞过程中发挥重要作用。但是当过量存在时,它们可以导致氧化应激(OS)。越来越多的证据表明,OS在HIV感染的发病机理中起着至关重要的作用,并且与HIV感染者的几种合并症有关。ROS,在线粒体氧化代谢过程中自然产生,并作为对各种细胞过程的反应,可以触发宿主的抗病毒反应,但也可以促进病毒复制。虽然ROS在HIV病理生理学中的多方面作用显然需要更多的研究,这篇综述论文揭示了在HIV感染的背景下OS产生的机制,提供对HIV病毒蛋白介导和抗逆转录病毒疗法产生的OS的见解。尽管病毒蛋白Tat主要归因于HIV感染后ROS的内源性细胞增加,本文总结了其他病毒蛋白在HIV介导的ROS激发中的作用。鉴于研究认识到ROS在各种病理的发作和进展中的重要作用,本文还探讨了ROS在介导一系列与HIV感染和逆转录病毒治疗相关的病理中的关键功能.观察到HIV患者的抗氧化防御系统受到破坏,抗氧化疗法作为一种潜在的治疗干预措施越来越受到关注,并得到了充分的讨论。虽然ROS在艾滋病毒的情况下发挥了重要作用,进一步的探索性研究对于确定可以减轻与ART诱导的OS相关的毒性和病理的替代治疗策略至关重要.
    Reactive oxygen species (ROS) are widely regarded as signaling molecules and play essential roles in various cellular processes, but when present in excess, they can lead to oxidative stress (OS). Growing evidence suggests that the OS plays a critical role in the pathogenesis of HIV infection and is associated with several comorbidities in HIV-infected individuals. ROS, generated both naturally during mitochondrial oxidative metabolism and as a response to various cellular processes, can trigger host antiviral responses but can also promote viral replication. While the multifaceted roles of ROS in HIV pathophysiology clearly need more investigation, this review paper unravels the mechanisms of OS generation in the context of HIV infections, offering insights into HIV viral protein-mediated and antiretroviral therapy-generated OS. Though the viral protein Tat is significantly attributed to the endogenous cellular increase in ROS post HIV infection, this paper sums up the contribution of other viral proteins in HIV-mediated elicitation of ROS. Given the investigations recognizing the significant role of ROS in the onset and progression of diverse pathologies, the paper also explores the critical function of ROS in the mediation of an of array of pathologies associated with HIV infection and retroviral therapy. HIV patients are observed with disruption to the antioxidant defense system, the antioxidant therapy is gaining focus as a potential therapeutic intervention and is well discussed. While ROS play a significant role in the HIV scenario, further exploratory studies are imperative to identifying alternative therapeutic strategies that could mitigate the toxicities and pathologies associated with ART-induced OS.
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  • 文章类型: Journal Article
    高基线NLR与晚期HCC患者的免疫治疗预后不良相关。由于抗肿瘤免疫激活需要时间,NLR的早期动态变化可作为预测免疫治疗反应的生物标志物.我们进行了一项回顾性研究,其中我们招募了209名接受ICIs的aHCC患者(训练队列:N=121,验证队列:N=88)。在训练组中,我们根据患者NLR的早期变化对患者进行了分类.具体来说,我们将患者定义为NLR稳定反应者,NLR响应器和NLR非响应器。我们使用生存分析比较了这三个患者组的结果。此外,我们将观察期缩短至6周,并在验证队列中验证了结果.在训练组中,NLR的早期动态变化(HR0.14,95CI0.03-0.65,p=0.012,HR0.19,95CI0.07-0.54,p=0.002;HR0.21,95CI0.10-0.42,p<0.001,HR0.40,95CI0.23-0.69,p=0.001),PD-L1<1%(HR5.36,95CI1.12-25.66,p=0.036;HR2.98,95CI1.51-5.91,p=0.002)和MVI(HR3.52,95CI1.28-9.69,p=0.015;HR1.99,95CI1.14-3.47,p=0.015)被确定为OS和PFS的独立预测因子。在验证队列中,当观察期减少到6周时,早期NLR变化仍具有预测价值。NLR的早期动态变化可能很容易定义,成本效益高,非侵入性生物标志物来预测aHCC对ICIs的反应。
    A high baseline NLR is associated with a poor prognosis of immunotherapy in patients with advanced HCC. As anti-tumour immune activation takes time, early dynamic changes in NLR may serve as a biomarker for predicting immunotherapy response. We conducted a retrospective study in which we enrolled 209 patients with aHCC who received ICIs (training cohort: N = 121, validation cohort: N = 88). In the training cohort, we categorized the patients based on the early changes in their NLR. Specifically, we defined patients as NLR Stable-Responder, NLR Responder and NLR Non-Responder. We compared the outcomes of these three patient groups using survival analysis. Additionally, we shortened the observation period to 6 weeks and validated the findings in the validation cohort. In the training cohort, early dynamic changes in NLR (HR 0.14, 95%CI 0.03-0.65, p = 0.012, HR 0.19, 95%CI 0.07-0.54, p = 0.002; HR 0.21, 95%CI 0.10-0.42, p < 0.001, HR 0.40, 95%CI 0.23-0.69, p = 0.001), PD-L1 < 1% (HR 5.36, 95%CI 1.12-25.66, p = 0.036; HR 2.98, 95%CI 1.51-5.91, p = 0.002) and MVI (HR 3.52, 95%CI 1.28-9.69, p = 0.015; HR 1.99, 95%CI 1.14-3.47, p = 0.015) were identified as independent predictors of OS and PFS. In the validation cohort, when the observation period was reduced to 6 weeks, early NLR changes still have predictive value. Early dynamic changes in NLR may be an easily defined, cost-effective, non-invasive biomarker to predict aHCC response to ICIs.
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  • 文章类型: Journal Article
    本研究旨在探讨一种新的综合炎症标志物之间的相关性:炎症综合预后指数(ICPI),结合NLR,PLR,还有MLR,胃癌(GC)的临床病理特点和总生存期(OS)。
    从2017年1月1日至2023年4月30日对876例GC患者的数据进行了回顾性分析。PSM用于减轻组间的混杂因素。利用接收器工作特征(ROC)曲线来确定最佳截止值。单变量,拉索,并进行多元回归分析。随后,开发并验证了预测OS的列线图.
    预后不良的队列显示中性粒细胞与淋巴细胞比率(NLR)水平显着升高,血小板与淋巴细胞比率(PLR),单核细胞与淋巴细胞比率(MLR),和ICPI(P<0.001)。同样,更高水平的NLR,PLR,MLR,和ICPI与较差的预后相关(P<0.001)。在回归分析之后,ICPI,T-stage,淋巴结比率(LNR),和主要部位被确定为影响OS的独立危险因素。基于这些因素构建了一个列线图来预测1-,3-,和5年操作系统,训练集和验证集的C指数分别为0.8和0.743,分别。校准曲线表明预测结果与实际结果密切相关。表明预测精度高。此外,决策曲线强调了模型的实用性。
    新的炎症参数ICPI整合了NLR,PLR和MLR。基于ICPI的列线图和网络计算器可准确预测GC患者的OS。
    UNASSIGNED: This study aims to investigate the correlation between a novel integrated inflammatory marker: The inflammation-combined prognostic index (ICPI), combining NLR, PLR, and MLR, with the clinicopathological characteristics and overall survival (OS) of gastric cancer (GC).
    UNASSIGNED: Data from 876 patients with GC were retrospectively analyzed from January 1, 2017, to April 30, 2023. PSM was employed to mitigate confounding factors between groups. Receiver operating characteristic (ROC) curves were utilized to determine the optimal cutoff value. Univariate, LASSO, and multivariate regression analyses were executed. Subsequently, a nomogram for predicting OS was developed and validated.
    UNASSIGNED: The cohort with a poor prognosis exhibited significantly elevated levels of neutrophil-to-lymphocyte ratio (NLR), platelet-to-lymphocyte ratio (PLR), monocyte-to-lymphocyte ratio (MLR), and ICPI (P<0.001). Similarly, higher levels of NLR, PLR, MLR, and ICPI were associated with a poorer prognosis (P<0.001). Following regression analysis, ICPI, T-stage, lymph node ratio (LNR), and primary site were identified as independent risk factors affecting OS. A nomogram was constructed based on these factors to predict 1-, 3-, and 5-year OS, yielding C-indexes of 0.8 and 0.743 for the training and validation sets, respectively. The calibration curves demonstrated close alignment between predicted and actual results, indicating high predictive accuracy. Moreover, the decision curve underscored the practical utility of the model.
    UNASSIGNED: The new inflammatory parameter ICPI integrates NLR, PLR and MLR. The ICPI-based nomogram and web calculator accurately predict OS in patients with GC.
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  • 文章类型: Journal Article
    异基因造血细胞移植(alloHCT)具有直接的细胞毒性和移植物抗多发性骨髓瘤作用(GvMM)。越来越多的试验表明,在新诊断和复发MM中进行alloHCT的生存益处。
    我们旨在提供近10年的全面分析,以验证alloHCT在MM患者中的疗效和生存结果。我们的研究包括了总共61项研究,这些研究提供了2013年4月14日至2023年4月14日之间的数据,以及总共15,294例接受过alloSCT的MM患者的数据。最佳反应率(CR,VGPR,PR)和生存结果(1-,2-,3-,5-,和10年操作系统,PFS,NRM)进行了评估。我们进一步独立地在NDMM/前线设置和RRMM/救助设置中进行了荟萃分析。
    合并估计CR,VGPR,PR率分别为0.45、0.21和0.24。1-的汇总估计,2-,3-,5-,和10年OS分别为0.69、0.57、0.45、0.45和0.36;1-,2-,3-,5-,和10年PFS分别为0.47、0.35、0.24、0.25和0.28;1-,2-,3-,5-,10年期NRM分别为0.16、0.21、0.16、0.20和0.15。在NDMM/前期设置中,汇总估计的CR率为0.54,而5年OS的CR率为0.54,PFS,和NRM分别为0.69、0.40和0.11。在复发的环境中,汇总估计的CR率为0.31,而5年OS的CR率为0.31,PFS,和NRM分别为0.24、0.10和0.15。
    我们的结果显示操作系统不变,PFS,和NRM从第三年开始到第十年,这表明alloSCT具有持续生存益处。在NDMM/前线设置中观察到良好的反应率和有希望的生存结果。
    尽管与其他治疗方法相比,alloSCT的缓解率较低,短期生存结局较差,长期随访可以揭示alloSCT对MM患者的生存益处。
    UNASSIGNED: Allogeneic hematopoietic cell transplantation (alloHCT) possessed direct cytotoxicity and graft-versus-multiple myeloma effect (GvMM). Growing trials have shown survival benefits of performing alloHCT in both newly diagnosed and relapsed MM.
    UNASSIGNED: We aimed to provide a comprehensive analysis in the recent 10 years to verify the efficacy and survival outcome of alloHCT in MM patients. A total of 61 studies which provide data between 14/04/2013 and 14/04/2023 and a total of 15,294 data from MM patients who had undergone alloSCT were included in our study. The best response rates (CR, VGPR, PR) and survival outcomes (1-, 2-, 3-,5-, and 10-year OS, PFS, NRM) were assessed. We further conducted meta-analysis in the NDMM/frontline setting and RRMM/salvage setting independently.
    UNASSIGNED: The pooled estimate CR, VGPR, and PR rates were 0.45, 0.21, and 0.24, respectively. The pooled estimates of 1-, 2-, 3-, 5-, and 10-year OS were 0.69, 0.57, 0.45, 0.45, and 0.36, respectively; the pooled estimates of 1-, 2-, 3-, 5-, and 10-year PFS were 0.47, 0.35, 0.24, 0.25, and 0.28, respectively; and the pooled estimates of 1-, 2-, 3-, 5-, and 10-year NRM were 0.16, 0.21, 0.16, 0.20, and 0.15, respectively. In the NDMM/upfront setting, the pooled estimate CR rate was 0.54, and those for 5-year OS, PFS, and NRM were 0.69, 0.40, and 0.11, respectively. In a relapsed setting, the pooled estimate CR rate was 0.31, and those for 5-year OS, PFS, and NRM were 0.24, 0.10, and 0.15, respectively.
    UNASSIGNED: Our results showed constant OS, PFS, and NRM from the third year onwards till the 10th year, suggesting that alloSCT has sustained survival benefits. Good response rate and promising survival outcome were observed in the NDMM/ frontline setting.
    UNASSIGNED: Although comparing with other treatments, alloSCT had a lower response rate and poorer short-term survival outcome, long-term follow-up could reveal survival benefits of alloSCT in MM patients.
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  • 文章类型: Journal Article
    2型糖尿病(T2DM)与骨质疏松症(OS)之间的因果关系尚不清楚。本研究旨在探讨因果关系,探讨潜在的代谢机制及其中介作用。
    我们进行了全面的研究,从全基因组关联研究(GWAS)数据库中收集490,089名T2DM患者的数据,并从FinnGen和MRC-IEU来源中选择OS数据,包括212,778和463,010名患者,分别,用于因果分析。同时,我们探讨了3个肥胖特征和30个代谢和炎症相关中介变量在因果关系中的潜在作用.
    T2DM与OS之间存在很强的因果关系。来自我们两个不同数据库来源的数据出现在同一方向,但在校正体重指数(BMI)后,腰围(WC),和腰臀比(WHR),方向变得相同。T2DM可增加OS风险[比值比(OR)>1.5,p<0.001]。Steiger的检验结果表明不存在反向因果关系。没有与糖脂代谢相关的危险因素,氨基酸代谢,和炎症被发现介导的因果关系。
    这项研究的结果表明,T2DM和OS之间存在强大的因果关系,受BMI等相关因素的影响。我们的研究结果揭示了OS的发病机制,并强调了临床医生治疗代谢紊乱以预防骨质疏松症的重要性。
    UNASSIGNED: The causal relationship between type 2 diabetes mellitus (T2DM) and osteoporosis (OS) remains unclear. This study aims to investigate the causal relationship and explore the potential metabolic mechanism and its mediating role.
    UNASSIGNED: We conducted a comprehensive study, gathering data on 490,089 T2DM patients from the genome-wide association study (GWAS) database and selecting OS data from FinnGen and MRC-IEU sources, including 212,778 and 463,010 patients, respectively, for causal analysis. Simultaneously, we explored the potential roles of three obesity traits and 30 metabolic and inflammation-related mediating variables in the causal relationship.
    UNASSIGNED: There is a strong causal relationship between T2DM and OS. The data from our two different database sources appeared in the same direction, but after correcting for body mass index (BMI), waist circumference (WC), and waist-to-hip ratio (WHR), the direction became the same. T2DM may increase the risk of OS [odds ratio (OR) > 1.5, p < 0.001]. Steiger\'s test results show that there is no reverse causality. No risk factors related to glycolipid metabolism, amino acid metabolism, and inflammation were found to mediate the causal relationship.
    UNASSIGNED: This study\'s findings indicate a robust causal relationship between T2DM and OS, influenced by relevant factors such as BMI. Our results shed light on the pathogenesis of OS and underscore the importance for clinicians to treat metabolic disorders to prevent osteoporosis.
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  • 文章类型: Journal Article
    背景:骨肉瘤(OS)是儿童最常见的原发性骨恶性肿瘤之一,它是从成骨细胞发育而来的,通常发生在骨骼的快速生长期。最近,据报道,超级增强子(SE)在骨肉瘤的生长和转移中起着至关重要的作用。因此,迫切需要确定特异性的SEs靶向抑制剂以辅助临床治疗.本研究旨在阐明BRD4抑制剂GNE-987在OS中靶向SEs的作用,并初步探讨其作用机制。
    方法:我们评估了用BRD4抑制剂GNE-987治疗后骨肉瘤细胞的变化。我们通过Westernblot评估了GNE-987在体外和体内的抗肿瘤作用。CCK8,流式细胞术检测,克隆形成,异种移植肿瘤大小测量,和Ki67免疫组织化学染色,并将ChIP-seq与RNA-seq技术相结合,寻找其抗肿瘤作用机制。
    结果:在这项研究中,我们发现,极低浓度的GNE-987(2-10nM)通过降解BRD4显著降低OS细胞的增殖和存活.此外,我们发现GNE-987显著诱导OS细胞的细胞周期阻滞和凋亡。进一步的研究表明,VHL对于GNE-987在OS细胞中发挥其抗肿瘤作用至关重要。与体外结果一致,GNE-987给药显著减少异种移植模型中的肿瘤大小,毒性最小,部分降解BRD4蛋白。通过分析RNA-seq和ChIP-seq数据鉴定KRT80。U2OSHiC分析提示KRT80结合位点附近染色质相互作用的频率更高。GNE-987处理后,H3K27ac修饰在KRT80处的富集显著降低。KRT80被认为在操作系统的发生和发展中起着重要作用。
    结论:这项研究揭示了GNE-987选择性降解BRD4并破坏OS中癌基因的转录调控。GNE-987有可能影响KRT80对抗OS。
    BACKGROUND: Osteosarcoma (OS) is one of the most common primary malignant tumors of bone in children, which develops from osteoblasts and typically occurs during the rapid growth phase of the bone. Recently, Super-Enhancers(SEs)have been reported to play a crucial role in osteosarcoma growth and metastasis. Therefore, there is an urgent need to identify specific targeted inhibitors of SEs to assist clinical therapy. This study aimed to elucidate the role of BRD4 inhibitor GNE-987 targeting SEs in OS and preliminarily explore its mechanism.
    METHODS: We evaluated changes in osteosarcoma cells following treatment with a BRD4 inhibitor GNE-987. We assessed the anti-tumor effect of GNE-987 in vitro and in vivo by Western blot, CCK8, flow cytometry detection, clone formation, xenograft tumor size measurements, and Ki67 immunohistochemical staining, and combined ChIP-seq with RNA-seq techniques to find its anti-tumor mechanism.
    RESULTS: In this study, we found that extremely low concentrations of GNE-987(2-10 nM) significantly reduced the proliferation and survival of OS cells by degrading BRD4. In addition, we found that GNE-987 markedly induced cell cycle arrest and apoptosis in OS cells. Further study indicated that VHL was critical for GNE-987 to exert its antitumor effect in OS cells. Consistent with in vitro results, GNE-987 administration significantly reduced tumor size in xenograft models with minimal toxicity, and partially degraded the BRD4 protein. KRT80 was identified through analysis of the RNA-seq and ChIP-seq data. U2OS HiC analysis suggested a higher frequency of chromatin interactions near the KRT80 binding site. The enrichment of H3K27ac modification at KRT80 was significantly reduced after GNE-987 treatment. KRT80 was identified as playing an important role in OS occurrence and development.
    CONCLUSIONS: This research revealed that GNE-987 selectively degraded BRD4 and disrupted the transcriptional regulation of oncogenes in OS. GNE-987 has the potential to affect KRT80 against OS.
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  • 文章类型: Journal Article
    目的:粘液性乳腺癌(MBC)是乳腺癌的一种,这在临床上是罕见的,主要是女性,因为发病率低,所以没有统一的标准治疗方案。老年患者由于合并合并症而预后不良。本研究旨在探讨手术和放化疗对老年女性MBC患者预后的影响,并构建预测老年女性MBC患者OS和CSS的列线图。
    方法:65岁以上女性MBC患者的数据来自监测,流行病学和最终结果(SEER)数据库,患者分为两组:训练集和验证集.预测模型的外部验证数据由昆明市中医医院提供。我们使用Cox回归建模,用于确定影响患者预后的独立危险因素。在根据多因素Cox回归模型避免混杂偏差后,我们使用这些筛选的具有统计学意义的结果来构建柱线图.使用一致性指数(C指数)对模型的性能进行了检验,校正曲线,和接收器的工作特性曲线下的面积(AUC)。随后,我们使用决策曲线分析(DCA)来检验我们列线图的潜在临床价值.
    结果:从数据库SEER中提取了8103名老年MBC女性患者,并将其分配到训练和验证集,随机。来自昆明市中医院的83例患者被用于外部验证集。经过多因素Cox回归分析,我们发现年龄,种族,T-stage,M级,手术方法,放射治疗,肿瘤大小是老年MBC患者OS的独立危险因素。同样,CSS的独立危险因素包括年龄,婚姻状况,N级,M阶段,手术方法,化疗,和肿瘤大小。操作系统训练的C索引,验证,外部验证集为0.731(95CI0.715-0.747),0.738(95CI0.724-0.752),和0.809(95CI0.731-0.8874)。训练集的C指数,验证集,CSS的外部验证集为0.786(95CI0.747-0.825),0.776(95CI0.737-0.815),和0.84(95CI0.754-0.926),分别。AUC,校准曲线和DCA也显示出良好的准确性。
    结论:在这项研究中,我们构建了一个新的列线图来预测老年MBC患者的预后。列线图经过内部和外部验证,已被证实具有良好的临床适用性。同时,我们发现对于老年女性MBC患者,手术和放疗对他们的生存有很大的好处,但化疗不利于患者生存。
    OBJECTIVE: Mucinous breast cancer (MBC) is a kind of breast cancer (BC), which is rare in clinic, mainly for women, because of the low incidence rate, so there is no unified standard treatment protocol. Elderly patients have a poor prognosis due to their combined comorbidities. This study aims to investigate the effect of surgery and chemoradiotherapy on the prognosis of elderly female MBC patients and construct nomograms for predicting the OS and CSS in elderly female MBC patients.
    METHODS: Data for female MBC patients over 65 years are obtained from the Surveillance, Epidemiology and End Results (SEER) database, patients were divided into two groups: the training set and the validation set. External validation data of the prediction model were provided by Kunming Hospital of Traditional Chinese Medicine. We used Cox regression modeling, which was used to identify independent risk factors affecting patient prognosis. After avoiding confounding bias according to the multifactorial Cox regression model, we used these screened statistically significant results to construct column-line plots. The performance of the model was tested using the consistency index (c-index), the calibration curve, and the area under the operating characteristic curve of the receiver (AUC). Subsequently, we used decision curve analysis (DCA) to examine the potential clinical value of our nomograms.
    RESULTS: A total of 8103 elderly MBC female patients were extracted from the database SEER and were assigned to the training and validation set, randomly. A total of 83 patients from Kunming Hospital of Traditional Chinese Medicine were used in the external verification set. After multifactorial Cox regression analysis, we found that age, race, T-stage, M-stage, surgical approach, radiotherapy, and tumor size were independent risk factors for OS in elderly MBC patients. Similarly, independent risk factors of CSS included age, marital status, N stage, M stage, surgical approach, chemotherapy, and tumor size. The C-index for the OS training, validation, and external verification set were 0.731 (95%CI 0.715-0.747), 0.738 (95%CI 0.724-0.752), and 0.809 (95%CI 0.731-0.8874). The C-index of the training set, the validation set, and external verification set for CSS were 0.786 (95%CI 0.747-0.825), 0.776 (95%CI 0.737-0.815), and 0.84 (95%CI0.754-0.926), respectively. The AUC, calibration curves and DCA also showed good accuracy.
    CONCLUSIONS: In this study, we construct a new nomogram to predict the prognosis of elderly patients with MBC. The nomograms have undergone internal and external validation and have been confirmed to have good clinical applicability. At the same time, we found that for elderly female MBC patients, surgery and radiotherapy significantly benefit their survival, but chemotherapy is not conducive to patient survival.
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  • 文章类型: Journal Article
    Y-90选择性内部放射治疗(SIRT)是一种用于无法手术的肝转移的消融疗法。这项研究的目的是研究SIRT后局部控制对寡转移患者总生存期(OS)的影响。回顾,单机构研究确定了2009年至2021年间接受单侧或双侧大叶Y-90SIRT的≤5例非颅内转移的寡转移患者.主要终点是从Y-90SIRT完成到死亡日期或最后一次随访的OS定义。从SIRT后3个月开始,通过RECISTv1.1标准将局部失败分类为目标病变处的进行性疾病。中位随访时间为15.7个月,33例患者共79个寡转移病灶接受SIRT治疗,结直肠腺癌的组织学占多数(n=22)。总的来说,94%的患者完成了Y-90肺叶切除术。在治疗的79个单独病变中,22(27.8%)失败。13例患者在肝内衰竭后接受挽救性肝定向治疗;10例接受重复SIRT。中位OS(mOS)为20.1个月,12个月OS为68.2%。内胎故障与较差的1y操作系统相关(52.3%vs.86.2%,p=0.004)。这些结果表明,Y-90后的病灶内故障可能与操作系统较差有关,强调低转移负担患者疾病控制的重要性。
    Y-90 Selective Internal Radiotherapy (SIRT) is an ablative therapy used for inoperable liver metastasis. The purpose of this investigation was to examine the impact of local control after SIRT on overall survival (OS) in oligometastatic patients. A retrospective, single-institution study identified oligometastatic patients with ≤5 non-intracranial metastases receiving unilateral or bilateral lobar Y-90 SIRT from 2009 to 2021. The primary endpoint was OS defined from Y-90 SIRT completion to the date of death or last follow-up. Local failure was classified as a progressive disease at the target lesion(s) by RECIST v1.1 criteria starting at 3 months after SIRT. With a median follow-up of 15.7 months, 33 patients were identified who had a total of 79 oligometastatic lesions treated with SIRT, with the majority histology of colorectal adenocarcinoma (n = 22). In total, 94% of patients completed the Y-90 lobectomy. Of the 79 individual lesions treated, 22 (27.8%) failed. Thirteen patients received salvage liver-directed therapy following intrahepatic failure; ten received repeat SIRT. Median OS (mOS) was 20.1 months, and 12-month OS was 68.2%. Intralesional failure was associated with worse 1 y OS (52.3% vs. 86.2%, p = 0.004). These results suggest that intralesional failure following Y-90 may be associated with inferior OS, emphasizing the importance of disease control in low-metastatic-burden patients.
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