immunotherapy.

免疫治疗。
  • 文章类型: Journal Article
    在这项研究中,我们基于集成机器学习算法开发了一种新的胶质母细胞瘤(GBM)预后模型.我们使用单变量Cox回归分析通过结合六个GBM队列来鉴定预后基因。根据预后基因,将10种机器学习算法集成到117种算法组合中,选择平均C指数最大的人工智能预后特征(AIPS)。通过单变量Cox分析和C指数将AIPS与10个先前发表的模型进行比较。我们比较了预后的差异,肿瘤免疫微环境(TIME),高和低AIPS评分组之间的免疫治疗敏感性。选择平均C指数最高(0.868)的基于随机生存森林算法的AIPS。与以前的10个预后模型相比,我们的AIPS具有最高的C指数。AIPS与GBM的临床特征密切相关。我们发现低评分组的患者预后有所改善,更活跃的时间,对免疫疗法更敏感。最后,我们通过免疫印迹和免疫组织化学验证了几个关键基因的表达。我们确定了GBM的理想预后标志,这可能为GBM患者的分层治疗方法提供新的见解。
    In this study, we developed a new prognostic model for glioblastoma (GBM) based on an integrated machine learning algorithm. We used univariate Cox regression analysis to identify prognostic genes by combining six GBM cohorts. Based on the prognostic genes, 10 machine learning algorithms were integrated into 117 algorithm combinations, and the artificial intelligence prognostic signature (AIPS) with the greatest average C-index was chosen. The AIPS was compared with 10 previously published models by univariate Cox analysis and the C-index. We compared the differences in prognosis, tumor immune microenvironment (TIME), and immunotherapy sensitivity between the high and low AIPS score groups. The AIPS based on the random survival forest algorithm with the highest average C-index (0.868) was selected. Compared with the previous 10 prognostic models, our AIPS has the highest C-index. The AIPS was closely linked to the clinical features of GBM. We discovered that patients in the low score group had improved prognoses, a more active TIME, and were more sensitive to immunotherapy. Finally, we verified the expression of several key genes by western blotting and immunohistochemistry. We identified an ideal prognostic signature for GBM, which might provide new insights into stratified treatment approaches for GBM patients.
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  • 文章类型: Journal Article
    癌症是一个全球性的健康问题,需要持续的治疗进展。这篇综述概述了最近的治疗策略,重点是癌症治疗中的新途径。新兴研究揭示了超越传统模式的有希望的目标,为精准医疗提供新的途径,并改善患者的预后。创新的一个关键领域在于针对与癌症进展有关的特定分子途径的靶向治疗。新型生物标志物的识别为开发针对个体患者特征的精准药物铺平了道路。免疫疗法还通过使用免疫系统来识别和去除癌细胞,彻底改变了癌症治疗。此外,表观遗传疗法和基于RNA的干预措施的进展表明,在调节基因表达和破坏癌症特异性信号通路方面具有前所未有的潜力.我们讨论了癌症的病理生理学,不同的免疫检查点抑制剂,和信号疗法中的靶向疗法。表观遗传调节剂,如组蛋白脱乙酰酶(HDAC)抑制剂和DNA甲基转移酶(DNMT)抑制剂,被研究过。癌症免疫治疗(CAR-T)细胞疗法的最新突破展示了增强针对各种癌症的免疫反应的潜力;因此,相关信息被纳入。Further,基于RNA的疗法,如RNA干扰和基于mRNA的疫苗和疗法,联合疗法,本文讨论了新的治疗方法。
    Cancer is a global health issue that requires ongoing therapeutic advances. This review provides an overview of recent treatment strategies focusing on novel pathways in cancer therapy. Emerging research has unveiled promising targets that go beyond traditional modalities, offering new avenues for precision medicine and improved patient outcomes. One key area of innovation lies in targeted therapies directed at specific molecular pathways implicated in cancer progression. The identification of novel biomarkers has paved the way for the development of precision medicines tailored to individual patient profiles. Immunotherapy has also revolutionised cancer treatment by using the immune system to identify and remove cancer cells. Moreover, advancements in epigenetic therapies and RNA-based interventions demonstrate unprecedented potential in modulating gene expression and disrupting cancer-specific signalling pathways. We have discussed the pathophysiology of cancer, different immune checkpoint inhibitors, and targeted therapies in signalling therapies. The epigenetic modulators, such as Histone deacetylase (HDACs) inhibitors and DNA methyltransferase (DNMT) inhibitors, were studied. Recent breakthroughs in cancer immunotherapy treatment (CAR-T) cell therapy showcase the potential to enhance the immune response against various cancers; thus, related information was incorporated. Further, RNA-based therapies like RNA interference and mRNA-based vaccines and therapies, combination therapies, and novel therapies were discussed in the present article.
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  • 文章类型: Journal Article
    用化疗和手术治疗恶性肿瘤通常与疾病复发和转移有关。免疫疗法通过产生针对肿瘤抗原的主动反应来改善癌症治疗。各种癌细胞在其表面表达大量的葡萄糖调节蛋白78(GRP78)蛋白。刺激针对该抗原的免疫系统可以使癌细胞暴露于免疫系统。在这里,我们研究了基于cGRP78的疫苗对不同癌细胞的有效性.
    用cGRP78免疫BALB/c小鼠。通过Cell-ELISA评估针对不同癌细胞的体液免疫应答。细胞免疫应答通过具有不同癌症抗原的脾细胞增殖测定来确定。通过将黑素瘤癌细胞注射到小鼠的尾巴中,在接种的小鼠中研究了疫苗接种对转移的影响。
    这些结果表明cGRP78具有可接受的抗原性,并刺激免疫系统产生抗体。三次注射后,产生的抗体量与对照组有显著差异。与其他三种细胞类型相比,Hela和HepG2对接种小鼠的血清显示出最高的反应。与其他细胞相比,针对B16F10细胞系的细胞免疫具有最好的结果。转移结果显示,30天后,B16F10黑色素瘤癌细胞的生长在接种疫苗小鼠的肺组织中并不明显.
    考虑到接种疫苗的小鼠对转移的抗性,这种疫苗通过抑制癌细胞的扩散为癌症治疗提供了有希望的前景。
    UNASSIGNED: Treatment of malignancies with chemotherapy and surgery is often associated with disease recurrence and metastasis. Immunotherapy improves cancer treatment by creating an active response against tumor antigens. Various cancer cells express a large amount of glucose-regulated protein 78 (GRP78) protein on their surface. Stimulating the immune system against this antigen can expose cancer cells to the immune system. Herein, we investigated the effectiveness of a cGRP78-based vaccine against different cancer cells.
    UNASSIGNED: BALB/c mice were immunized with the cGRP78. The humoral immune response against different cancer cells was assessed by Cell-ELISA. The cellular immunity response was determined by splenocyte proliferation assay with different cancer antigens. The effect of vaccination on metastasis was investigated in vaccinated mice by injecting melanoma cancer cells into the tail of mice.
    UNASSIGNED: These results indicated that the cGRP78 has acceptable antigenicity and stimulates the immune system to produce antibodies. After three injections, the amount of produced antibody was significantly different from the control group. Compared to the other three cell types, Hela and HepG2 showed the highest reaction to the serum of vaccinated mice. Cellular immunity against the B16F10 cell line had the best results compared to other cells. The metastasis results showed that after 30 days, the growth of B16F10 melanoma cancer cells was not noticeable in the lung tissue of vaccinated mice.
    UNASSIGNED: Considering the resistance of vaccinated mice to metastasis, this vaccine offers a promising prospect for cancer treatment by inhibiting the spread of cancer cells.
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  • 文章类型: Journal Article
    背景:肝细胞癌(HCC)是原发性肝癌的主要类型,其相关死亡在全球排名第三。HCC的治疗方法和进展预测指标还不够充分。然而,在m1A-的签名方面进展甚微,m5C-,m6A-,m7G-,和肝癌的DNA甲基化。结果:我们校准了风险基因签名模型,可用于根据单变量对HCC患者进行分类,多变量,和LASSOCox回归分析。该基因标记将患者分为高风险和低风险亚组。与低危组患者相比,高危组患者的总生存期(OS)显着降低。基因集变异分析(GSVA),免疫浸润,和免疫治疗反应进行了分析。结果表明,离开免疫抑制环境,高危人群对5-氟尿嘧啶的敏感性更高,顺铂,索拉非尼,他莫昔芬,和表柔比星.这些结果表明应考虑个性化治疗。结论:我们的发现丰富了我们对分子异质性的理解,肿瘤微环境(TME),和肝癌的药物敏感性。m1A-,m5C-,m6A-,m7G-,和DNA甲基化相关的调节因子可能是未来研究的有希望的生物标志物。
    Background: Hepatocellular carcinoma (HCC) is the main type of primary liver cancer, and its related death ranks third worldwide. The curative methods and progress prediction markers of HCC are not sufficient enough. Nevertheless, little progress has been made in the signature of m1A-, m5C-, m6A-, m7G-, and DNA methylation of HCC. Results: We calibrated a risk gene signature model that can be used to categorize HCC patients based on univariate, multivariate, and LASSO Cox regression analysis. This gene signature classified the patients into high- and low-risk subgroups. Patients in the high-risk group showed significantly reduced overall survival (OS) compared with patients in the low-risk group. The gene set variation analysis (GSVA), immune infiltration, and immunotherapy response were analyzed. The results demonstrated that an immunosuppressive environment was exited and the high-risk group had higher sensitivity to 5-fluorouracil, cisplatin, sorafenib, tamoxifen, and epirubicin. These results indicated personalized therapy should be taken into consideration. Conclusions: Our findings enriched our understanding of the molecular heterogeneity, tumor microenvironment (TME), and drug susceptibility of HCC. m1A-, m5C-, m6A-, m7G-, and DNA methylation-related regulators may be promising biomarkers for future research.
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  • 文章类型: Journal Article
    Theranostics,一种结合靶向治疗和诊断成像的方法,已经成为增强癌症治疗的可行途径,和混合纳米粒子(HNP)处于这一领域的前沿。金属漆,聚合物,基于脂质的,研究了基于二氧化硅的HNP的靶向性和生物相容性。使用HNP,化疗药物,小干扰RNA,治疗基因可以精确控制。这增强了治疗功效并减少了副作用。用荧光染料,MRI造影剂,和PET示踪剂,实时治疗反应监测是可以想象的。具有治疗和诊断能力的纳米平台为个性化医疗和精准肿瘤学带来了巨大的希望。本研究讨论了HNPs的生物相容性,稳定性,免疫原性,和长期生物安全,这对癌症疗法的临床翻译至关重要。Further,在这次深入的调查中,我们调查了设计,合成,和用于癌症治疗的HNP的多功能活性。
    Theranostics, a method that combines targeted therapy and diagnostic imaging, has emerged as a viable route for enhancing cancer treatment, and hybrid nanoparticles (HNPs) are at the forefront of this field. Metallic, polymeric, lipid-based, and silica- based HNPs are studied for targeting and biocompatibility. Using HNPs, chemotherapeutic drugs, small interfering RNA, and therapeutic genes can be given precisely and controlled. This enhances therapeutic efficacy and reduces adverse effects. With fluorescence dyes, MRI contrast agents, and PET tracers, real-time therapy response monitoring is conceivable. A nano platform with therapeutic and diagnostic capabilities holds great promise for personalized medicine and precision oncology. The present study discusses HNPs\' biocompatibility, stability, immunogenicity, and long-term biosafety, which are crucial to the clinical translation of cancer theranostics. Further, in this in- -depth investigation, we investigated the design, synthesis, and multifunctional activities of HNPs for use in cancer theranostics.
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  • 文章类型: Journal Article
    背景:肝细胞癌(HCC)在全球范围内具有很高的发病率和死亡率。切除修复交叉补体3(ERCC3),核苷酸切除修复(NER)途径中的关键功能基因,通常在癌症中突变或过表达,被认为是导致HCC发展的关键基因。ERCC3及其相关关键基因介导的全球肿瘤微环境(TME)中免疫细胞浸润特征在HCC中仍不清楚。这项研究的目的是整合ERCC3相关关键基因在评估TME细胞浸润特征中的作用。免疫治疗疗效,和肝癌患者的预后。本研究为肝癌的免疫学机制研究和预后预测提供了理论依据。
    方法:来自TCGA数据库的HCC队列包括50个正常样本和374个肿瘤样本,以比较肝肿瘤组织和正常肝组织之间ERCC3相关基因表达和预后的差异,并通过单样本基因组富集分析(ssGSEA)定量24个细胞的相对丰度,分析不同基因浸润TME细胞的程度。使用最小绝对收缩和选择算子(LASSO)Cox回归模型构建与ERCC3基因相关的风险评分。
    结果:与正常肝组织相比,肝癌肿瘤组织中11个ERCC3相关基因表达显著上调,这些基因的高表达与HCC患者的不良预后显着相关。关键基因(11个ERCC3相关基因)与核酸代谢中的核酸还原信号通路和病毒致癌通路密切相关,表明这些关键基因可能在肿瘤细胞增殖中起作用,迁移,和入侵,以及病毒相关性肝癌的发病机理。此外,TME免疫细胞在正常组织和肿瘤组织中的浸润特点分歧。肿瘤组织的免疫和间质活性明显低于健康肝组织。这项研究表明,关键基因与CTLA4呈显著正相关,并富集在中枢记忆CD4T细胞中,效应记忆CD4T细胞,活化的CD4T细胞,和2型T辅助细胞。回归分析构建的预后模型能更好地将患者区分为高危和低危,生存分析显示,高风险评分亚型患者的生存时间明显低于低风险评分患者,且高风险组含有较高水平的免疫抑制细胞,这可能是免疫逃逸的媒介。此外,多变量分析表明,风险评分是评估HCC患者预后的可靠和无偏见的生物标志物。其在预测免疫治疗结果中的价值也得到了证实。
    结论:这项研究揭示了一种新的遗传特征,该特征与HCC患者的TME细胞浸润和预后显着相关。这表明与ERCC3相关的多个关键基因的联合作用在塑造TME细胞浸润的多样性和复杂性中起着至关重要的作用。评估与ERCC3相关的多个关键基因的组合特征可以帮助预测患者的免疫治疗结果,并为HCC的免疫个体化治疗研究提供新的潜在靶标。
    BACKGROUND: Hepatocellular carcinoma (HCC) has high morbidity and mortality worldwide. Excision repair cross-complement 3 (ERCC3), a key functional gene in the nucleotide excision repair (NER) pathway, is commonly mutated or overexpressed in cancers and is thought to be a key gene contributing to the development of HCC. The characteristics of immune cell infiltration in the global tumor microenvironment (TME) mediated by ERCC3 and its related key genes in HCC are still unclear. The aim of this study was to integrate the role of ERCC3-related key genes in assessing the TME cell infiltration characteristics, immunotherapy efficacy, and prognosis of HCC patients. This study provides a theoretical basis for the study of immunological mechanisms and prognosis prediction in HCC.
    METHODS: The HCC cohort from the TCGA database included 50 normal samples and 374 tumor samples to compare the differences in ERCC3-related gene expression and prognosis between liver tumor tissues and normal liver tissues and to analyze the extent to which different genes infiltrated TME cells by quantifying the relative abundance of 24 cells through single-sample genome enrichment analysis (ssGSEA). A risk score associated with the ERCC3 gene was constructed using the least absolute shrinkage and selection operator (LASSO) Cox regression model.
    RESULTS: The expression of 11 ERCC3-related genes was significantly upregulated in HCC tumor tissues compared to normal liver tissues, and high expression of these genes was significantly associated with poor prognosis in HCC patients. The key genes (11 ERCC3-related genes) were closely associated with the nucleic acid reduction signaling pathway in nucleic acid metabolism and the viral oncogenic pathway, suggesting that these key genes may play a role in tumor cell proliferation, migration, and invasion, as well as in the pathogenesis of virus-associated HCC. In addition, the infiltration characteristics of TME immune cells in normal and tumor tissues were different. Immune and mesenchymal activity was significantly lower in tumor tissues than in healthy liver tissues. This study revealed that key genes were significantly positively correlated with CTLA4 and enriched in central memory CD4 T cells, effector memory CD4 T cells, activated CD4 T cells, and type 2 T helper cells. The prognostic model constructed by regression analysis could better distinguish patients into high-risk and low-risk groups, and the survival analysis showed that the survival time of patients with high-risk score subtypes was significantly lower than that of patients with low-risk scores and that the high-risk group contained higher levels of immune-suppressive cells, which may be a mediator of immune escape. Moreover, multivariate analyses showed that the risk score profile is a reliable and unbiased biomarker for assessing the prognosis of HCC patients, and its value in predicting the outcome of immunotherapy was also confirmed.
    CONCLUSIONS: This study revealed a novel genetic signature that is significantly associated with TME cell infiltration and prognosis in HCC patients. It demonstrated that the combined action of multiple key genes associated with ERCC3 plays a crucial role in shaping the diversity and complexity of TME cell infiltrates. Evaluating the combined characteristics of multiple key genes associated with ERCC3 can help predict the outcome of immunotherapy in patients and provide new potential targets for immuno-individualized therapeutic studies on HCC.
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  • 文章类型: Journal Article
    背景:共济失调毛细血管扩张症突变(ATM),顶端DNA损伤反应基因,是肿瘤中常见的突变基因,其突变可以增强肿瘤的免疫原性并改变PD-L1的表达,这可能有助于免疫检查点抑制剂(ICIs)的治疗。
    方法:本文综合分析了ATM突变的特点及其与ICIs治疗临床预后的关系。在癌症基因组图谱(TCGA)队列中,已发现ATM突变的总频率为4%(554/10953)。
    结果:有ATM突变的患者的TMB和MSI水平均明显高于无突变的患者(P<0.0001)。TMB中位数与ATM突变频率呈正相关(r=0.54,P=0.003)。在TCGA队列中,具有ATM突变的患者在总生存期方面具有更好的临床益处(OS,危险比(HR)=0.736,95%CI=0.623-0.869),无进展生存期(PFS,HR=0.761,95%CI=0.652-0.889),和无病生存率(DFS,HR=0.686,95%CI=0.512-0.919)]比无ATM突变的患者。随后,验证结果显示,在ICIs治疗的患者中,ATM突变与较长的OS显著相关(HR=0.710,95%CI=0.544~0.928).进一步研究表明,ATM突变与抗肿瘤免疫调节显著相关(P<0.05)。
    结论:我们的研究结果强调了ATM突变作为预测多种肿瘤ICIs治疗的一个有前景的生物标志物的价值。
    Ataxia telangiectasia mutated (ATM), an apical DNA damage response gene, is a commonly mutated gene in tumors, and its mutation could strengthen tumor immunogenicity and alter the expression of PD-L1, which potentially contributes to immune checkpoint inhibitors (ICIs) therapy.
    The characteristics of ATM mutation and its relationship with the ICIs-treated clinical prognosis have been analyzed comprehensively in this paper. The overall frequency of ATM mutations has been found to be 4% (554/10953) in the cancer genome atlas (TCGA) cohort.
    Both the TMB and MSI levels in patients with ATM mutations were significantly higher than those in patients without mutations (P < 0.0001). The median TMB was positively correlated with the frequency of ATM mutations (r = 0.54, P = 0.003). In the TCGA cohort, patients with ATM mutations had better clinical benefits in terms of overall survival (OS, hazard ratio (HR) = 0.736, 95% CI = 0.623 - 0.869), progression-free survival (PFS, HR = 0.761, 95% CI = 0.652 - 0.889), and disease-free survival (DFS, HR = 0.686, 95% CI = 0.512 - 0.919)] than patients without ATM mutations. Subsequently, the verification results showed ATM mutations to be significantly correlated with longer OS in ICIs-treated patients (HR = 0.710, 95% CI = 0.544 - 0.928). Further exploration indicated ATM mutation to be significantly associated with regulated anti-tumor immunity (P < 0.05).
    Our findings highlight the value of ATM mutation as a promising biomarker to predict ICIs therapy in multiple tumors.
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  • 文章类型: Journal Article
    背景:血管生成拟态,一种新的侵袭性肿瘤的新生血管形成模式,与不良临床结局相关。
    目的:本研究的目的是建立一个新的模型,称为VC分数,预测预后,肿瘤微环境(TME)组件,和肝细胞癌(HCC)的免疫治疗反应。
    方法:使用公共数据库的表达数据来建立预后模型。进行一致聚类以确认具有理想聚类功效的分子亚型。利用VC评分对高危组和低危组进行分层。各种方法,包括生存分析,单样本基因集富集分析(ssGSEA),肿瘤免疫功能障碍和排斥评分(TIDE),免疫表型(IPS),和列线图,用于验证模型性能并表征HCC组织的免疫状态。进行GSEA以挖掘功能通路信息。
    结果:三种分子亚型之间的生存和免疫特性不同。五个基因标签(TPX2,CDC20,CFHR4,SPP1和NQO1)被证实是HCC患者预后的独立预测因素。与低危组相比,高危组的总生存率(OS)较低,死亡率较高。低风险组的患者预计将从免疫检查点抑制剂治疗中受益,并表现出对免疫疗法的敏感性增加。富集分析显示,与细胞周期和DNA复制过程相关的信号通路在高风险组中表现出富集。
    结论:VC评分具有为HCC患者建立个体化治疗计划和临床管理策略的潜力。
    BACKGROUND: Vasculogenic mimicry, a novel neovascularization pattern of aggressive tumors, is associated with poor clinical outcomes.
    OBJECTIVE: The aim of this research was to establish a new model, termed VC score, to predict the prognosis, Tumor Microenvironment (TME) components, and immunotherapeutic response in Hepatocellular Carcinoma (HCC).
    METHODS: The expression data of the public databases were used to develop the prognostic model. Consensus clustering was performed to confirm the molecular subtypes with ideal clustering efficacy. The high- and low-risk groups were stratified utilizing the VC score. Various methodologies, including survival analysis, single-sample Gene Set Enrichment Analysis (ssGSEA), Tumor Immune Dysfunction and Exclusion scores (TIDE), Immunophenoscore (IPS), and nomogram, were utilized for verification of the model performance and to characterize the immune status of HCC tissues. GSEA was performed to mine functional pathway information.
    RESULTS: The survival and immune characteristics varied between the three molecular subtypes. A five-gene signature (TPX2, CDC20, CFHR4, SPP1, and NQO1) was verified to function as an independent predictive factor for the prognosis of patients with HCC. The high-risk group exhibited lower Overall Survival (OS) rates and higher mortality rates in comparison to the low-risk group. Patients in the low-risk group were predicted to benefit from immune checkpoint inhibitor therapy and exhibit increased sensitivity to immunotherapy. Enrichment analysis revealed that signaling pathways linked to the cell cycle and DNA replication processes exhibited enrichment in the high-risk group.
    CONCLUSIONS: The VC score holds the potential to establish individualized treatment plans and clinical management strategies for patients with HCC.
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  • 文章类型: Journal Article
    化疗耐药是肿瘤治疗失败的常见原因。各种分子反应,如外排转运蛋白的表达增加,包括P糖蛋白(P-gp),肿瘤微环境(TME)的变化,血小板的作用,以及癌症干细胞(CSC)的作用,会导致耐药性。通过对耐药机制的广泛研究,更有效的抗耐药药物和治疗方法正在开发中。本文就耐药机制及相关抗耐药药物进行综述。此外,由于上述治疗的治疗局限性,已经描述了基于纳米载体的联合免疫治疗以应对耐药性挑战的新进展。纳米载体联合免疫治疗不仅可以靶向肿瘤部位进行靶向药物释放,还可以调节自身免疫系统,增强免疫疗效。从而克服肿瘤的耐药性。这篇综述提出了克服肿瘤耐药性的新策略,有望为肿瘤的治疗和预后提供信息。
    Chemotherapy resistance is a common cause of tumor treatment failure. Various molecular responses, such as increased expression of efflux transporter proteins, including Pglycoprotein (P-gp), changes in the tumor microenvironment (TME), the role of platelets, and the effects of cancer stem cells (CSCs), can lead to drug resistance. Through extensive research on the mechanisms of drug resistance, more effective anti-resistance drugs and therapeutic approaches are being developed. This review explores drug resistance mechanisms and summarizes relevant anti-resistance drugs. In addition, due to the therapeutic limitations of the aforementioned treatments, new advances in nanocarrier-based combination immunotherapy to address the challenge of drug resistance have been described. Nanocarriers combined with immunotherapy can not only target tumor sites for targeted drug release but also modulate the autoimmune system and enhance immune efficacy, thereby overcoming tumor drug resistance. This review suggests new strategies for overcoming tumor drug resistance and is expected to inform tumor treatment and prognosis.
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  • 文章类型: Journal Article
    背景:NIFK作为Ki67的结合蛋白,在细胞的有丝分裂中起重要作用,与特定类型肿瘤的进展密切相关。然而,目前尚缺乏对NIFK在泛癌症中的系统分析,也没有足够的研究来探讨其在人类肿瘤中的作用。
    方法:我们使用来自癌症基因组图谱(TCGA)的数据,通过大规模生物信息学分析,系统地评估了NIFK在人类癌症中的泛癌表达和突变。此外,我们探索了NIFK的泛癌症免疫学特征,尤其是结直肠腺癌(COAD)。此外,我们使用单细胞测序分析了NIFK在COAD组织不同细胞中的表达,并进行了GO,KEGG,和COAD中NIFK的基因集富集分析。最后,我们在体外实验中评估了NIFK敲低对大肠癌细胞系的影响。
    结果:我们发现NIFK在几乎所有类型的肿瘤中都过表达,并显示出显着的预后功效。此外,NIFK与特定免疫特征之间的相关性,如免疫细胞浸润,免疫检查点基因,TMB,和MSI,提示NIFK可用于指导免疫治疗。随后,通过单细胞测序分析发现,肿瘤细胞中NIFK的表达显著上调,NIFK基因与肿瘤进展和免疫治疗反应密切相关。最后,我们进一步阐明了NIFK在结直肠癌中的作用,并发现NIFK表达下调可以抑制结直肠癌的增殖,迁移,结直肠癌细胞的侵袭能力。
    结论:这项研究的结果表明,NIFK,作为泛癌基因的一员,将作为一系列癌症类型的生物标志物和潜在治疗靶点,为精准医学提供新的见解。
    BACKGROUND: As a binding protein of Ki67, NIFK plays an important role in the mitosis of cells and is closely related to the progression of specific types of tumors. However, there is still a lack of systematic analysis of NIFK in pan-cancer and insufficient research to explore its role in human tumors.
    METHODS: We systematically evaluated the pan-cancer expression and mutation of NIFK in human cancers using data from The Cancer Genome Atlas (TCGA) through large-scale bioinformatics analysis. In addition, we explored the pan-cancer immunological characteristics of NIFK, especially in colorectal adenocarcinoma (COAD). Furthermore, we used single-cell sequencing to analyze the expression of NIFK in different cells of COAD tissues and performed GO, KEGG, and gene set enrichment analysis of NIFK in COAD. Lastly, we evaluated the effects of NIFK knockdown on the colorectal cancer cell lines in in vitro experiment.
    RESULTS: We found that NIFK was overexpressed in almost all types of tumors and showed significant prognostic efficacy. Additionally, correlations between NIFK and specific immune features, such as immune cell infiltration, immune checkpoint genes, TMB, and MSI, suggest that NIFK may be used to guide immunotherapy. Subsequently, it was found that the expression of NIFK was significantly upregulated in tumor cells through single-cell sequencing analysis, and the NIFK gene was closely associated with tumor progression and immune therapy response. Finally, we further elucidated the role of NIFK in colorectal cancer and found that downregulation of NIFK expression could inhibit the proliferation, migration, and invasion ability of colorectal cancer cells.
    CONCLUSIONS: The results of this study demonstrated that NIFK, as a member of the pan-cancer genes, will serve as a biomarker and a potential therapeutic target for a range of cancer types, providing new insight into precision medicine.
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