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Association of the Reduced Function Met420del Polymorphism of SLC22A1 with Metformin-Induced Gastrointestinal Intolerance in Ethiopian Patients with Type 2 Diabetes Mellitus 埃塞俄比亚 2 型糖尿病患者 SLC22A1 功能降低 Met420del 多态性与二甲双胍诱发的胃肠道不耐受的关系
Pub Date : 2024-05-03 DOI: 10.2147/pgpm.s457374
Abraham Degaga, Sisay Sirgu, Hasniza Zaman Huri, Maw Shin Sim, Navin Kumar Loganadan, Tedla Kebede, Birhanemeskel Tegene, Ephrem Engidawork, Workineh Shibeshi
Background: Despite its widespread use and favored profile, there are extensive variations in the treatment outcome of metformin therapy. Furthermore, studies reported that the inter-individual variability in the occurrence of metformin treatment associated side effects were related to the differences in individual genetic profiles. Thus, this study aimed to evaluate whether the reduced function methionine deletion at codon 420 (Met420del) variant of SLC22A1 (rs72552763) is associated with metformin induced gastrointestinal intolerance in Ethiopian patients with type 2 diabetes mellitus (T2DM).
Patients and Methods: A retrospective observational study was conducted on 47 T2DM patients on metformin treatment for < 3 years to assess the association of SLC22A1 (rs72552763) polymorphism with metformin induced gastrointestinal intolerance. Accordingly, 24 metformin tolerant and 23 metformin intolerant individuals with T2DM were recruited. Genotyping of rs72552763 was performed using TaqMan® Drug Metabolism Enzyme Genotyping Assay and its association to metformin induced gastrointestinal intolerance was assessed based on switching to a new class of glucose lowering agents or failure to up titrate dose due to metformin induced gastrointestinal intolerance. Chi-square, logistic regression and Mann–Whitney statistical tests were used as appropriate. Statistical significance was set at p < 0.05.
Results: In our study, no significant association was observed between rs72552763 and metformin induced gastrointestinal intolerance. We found that the female gender and physical inactivity were risk factors for metformin gastrointestinal intolerance.
Conclusion: Our study found that the Met420del variant of SLC22A1 (rs72552763) was not associated with metformin induced gastrointestinal intolerance in Ethiopian patients with T2DM. This is the study first to investigate the association of rs72552763 with metformin intolerance in the Ethiopian population with T2DM. However, the findings need to be cautiously interpreted given the relatively small sample size. In addition, a more complete investigation of SLC22A1 variants would be required to fully assess the effect of the gene on metformin induced gastrointestinal intolerance as several variants with a more severe loss of function have been described.

背景:尽管二甲双胍被广泛使用,且备受青睐,但其治疗效果却存在很大差异。此外,有研究报告称,二甲双胍治疗相关副作用发生的个体间差异与个体遗传特征的差异有关。因此,本研究旨在评估埃塞俄比亚 2 型糖尿病(T2DM)患者中,SLC22A1(rs72552763)第 420 号密码子(Met420del)蛋氨酸功能缺失变异是否与二甲双胍诱导的胃肠道不耐受有关:对47名接受二甲双胍治疗3年的T2DM患者进行了一项回顾性观察研究,以评估SLC22A1(rs72552763)多态性与二甲双胍诱导的胃肠道不耐受的相关性。因此,研究人员招募了 24 名二甲双胍耐受和 23 名二甲双胍不耐受的 T2DM 患者。使用TaqMan®药物代谢酶基因分型分析法对rs72552763进行基因分型,并根据二甲双胍引起的胃肠道不耐受而改用新的降糖药物或剂量滴定失败来评估其与二甲双胍引起的胃肠道不耐受的关系。根据情况使用了卡方、逻辑回归和曼-惠特尼统计检验。统计显著性设定为 p < 0.05:在我们的研究中,没有观察到 rs72552763 与二甲双胍引起的胃肠道不耐受之间有明显的关联。我们发现,女性性别和缺乏运动是二甲双胍胃肠道不耐受的风险因素:我们的研究发现,在埃塞俄比亚的 T2DM 患者中,SLC22A1 的 Met420del 变异(rs72552763)与二甲双胍诱发的胃肠道不耐受无关。这是首次在埃塞俄比亚 T2DM 患者中研究 rs72552763 与二甲双胍不耐受的关系。然而,由于样本量相对较小,因此需要谨慎解释研究结果。此外,还需要对 SLC22A1 变体进行更全面的调查,以全面评估该基因对二甲双胍诱发的胃肠道不耐受的影响,因为有几个功能丧失更严重的变体已被描述过。
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引用次数: 0
Three Liquid-Liquid Phase Separation-Related Genes Associated with Prognosis in Glioma 与胶质瘤预后相关的三个液-液相分离基因
Pub Date : 2024-04-22 DOI: 10.2147/pgpm.s442000
Ling Lv, Xin Zhang, Yajun Liu, Xutong Zhu, Ruihan Pan, Lifa Huang
Purpose: Dysregulated liquid-liquid phase separation (LLPS) instigates tumorigenesis through biomolecular condensate dysfunction. However, the association between LLPS-associated genes and glioma remains underexplored.
Patients and Methods: Differentially expressed genes (DEGs) of glioma were obtained from the GSE50161 dataset, including 34 glioma and 13 normal samples. We analyzed differentially expressed LLPS-related genes in glioma from public databases. These genes informed refined molecular subtyping on the TCGA-glioma dataset. CIBERSORT assessed immune cell infiltration across three subclusters. A prognostic model was devised using univariate and lasso Cox regressions on intersecting genes. Prognostic gene expression was validated in glioma cells via RT-qPCR.
Results: A total of 673 differentially expressed LLPS-associated genes were identified in glioma. Three distinct molecular subtypes (C1, C2, and C3) of glioma were obtained with a marked variance in the expression of immune checkpoint genes PD1 and PDL1. Differences in immune cell infiltration were observed across subtypes. In addition, a tri-gene prognostic signature (TAGLN2, NTNG2, and IGF2BP2) was derived with significant survival differences between high and low-risk groups. The prognostic model displayed impressive AUC values for 1, 3, and 5-year survival in both training and validation sets. Further analysis highlighted a notable correlation between the three prognostic genes and immune cells in glioma samples. Furthermore, we found the upregulation of TAGLN2 and IGF2BP2 and the downregulation of NTNG2 in glioma tumors and cells.
Conclusion: This study innovatively uncovers the significant role of LLPS-related genes in glioma tumor grading and prognosis. The constructed tri-gene prognostic model holds promise for enhancing personalized prognosis assessments and optimizing immunotherapy strategies for glioma patients.

Keywords: liquid-liquid phase separation, glioma, prognostic model, molecular subtype, immune cell infiltration
目的:失调的液-液相分离(LLPS)会通过生物分子凝结物的功能障碍诱发肿瘤。然而,LLPS相关基因与胶质瘤之间的关联仍未得到充分探索:胶质瘤的差异表达基因(DEGs)来自 GSE50161 数据集,其中包括 34 个胶质瘤样本和 13 个正常样本。我们从公共数据库中分析了胶质瘤中LLPS相关的差异表达基因。这些基因为TCGA-胶质瘤数据集的分子亚型细化提供了依据。CIBERSORT评估了三个亚群的免疫细胞浸润情况。通过对交叉基因进行单变量和套索考克斯回归,设计出了一个预后模型。通过 RT-qPCR 验证了胶质瘤细胞中预后基因的表达:结果:在胶质瘤中总共发现了 673 个差异表达的 LLPS 相关基因。胶质瘤有三种不同的分子亚型(C1、C2 和 C3),免疫检查点基因 PD1 和 PDL1 的表达存在明显差异。不同亚型的免疫细胞浸润也存在差异。此外,还得出了一个三基因预后特征(TAGLN2、NTNG2 和 IGF2BP2),高危组和低危组之间存在显著的生存差异。在训练集和验证集中,预后模型的 1 年、3 年和 5 年生存率的 AUC 值都令人印象深刻。进一步分析显示,胶质瘤样本中的三个预后基因与免疫细胞之间存在明显的相关性。此外,我们还发现在胶质瘤肿瘤和细胞中,TAGLN2 和 IGF2BP2 上调,NTNG2 下调:本研究创新性地发现了LLPS相关基因在胶质瘤肿瘤分级和预后中的重要作用。构建的三基因预后模型有望加强胶质瘤患者的个性化预后评估并优化免疫治疗策略。 关键词:液-液相分离;胶质瘤;预后模型;分子亚型;免疫细胞浸润
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引用次数: 0
ACE Gene Mutations (rs577350502) in Early-Onset and Recurrent Myocardial Infarction: A Case Report and Review 早发和复发性心肌梗死中的 ACE 基因突变 (rs577350502):病例报告与综述
Pub Date : 2024-04-20 DOI: 10.2147/pgpm.s455740
Xiaoxi Deng, Xiaofei Guo, Xiaojie Chen, Xinyu Zeng, Jiamin Guo, Xin Bai, Ping Zhang, Yuan Wang
Background: Acute myocardial infarction (AMI) is a severe acute coronary syndrome, demonstrating a trend toward affecting younger individuals in recent years. The association between early-onset myocardial infarction and single nucleotide polymorphism necessitates further exploration and evaluation.
Case description: We present a case of a patient experiencing early-onset and recurrent myocardial infarction. The patient underwent stent implantation for myocardial infarction at the age of 53 and subsequently encountered two more myocardial infarctions within a span of 16 years. Following interventional therapy, genetic testing was conducted to assess the efficacy of subsequent anti-heart failure medications, with the aim to preemptively address heart failure risks. Genetic testing revealed a mutation in the angiotensin-converting enzyme (ACE) gene (rs577350502, g.63488533C>A), characterized by an intron-deletion single nucleotide variant.
Conclusion: While this variant has not been previously reported to be associated with any specific disease, we hypothesize that it may contribute to the susceptibility and risk of myocardial infarction and coronary heart disease in the patient under consideration. This observation underscores the significance of investigating the insertion/deletion polymorphisms of the ACE gene in the context of AMI and emphasizes the necessity for further validation of this variant and other genetic markers associated with AMI in related diseases.

背景:急性心肌梗死(AMI)是一种严重的急性冠状动脉综合征,近年来呈年轻化趋势。早发心肌梗死与单核苷酸多态性之间的关联需要进一步探讨和评估:我们介绍了一例早发和复发性心肌梗死患者的病例。患者在 53 岁时因心肌梗死接受了支架植入手术,随后在 16 年内又发生了两次心肌梗死。介入治疗后,患者接受了基因检测,以评估后续抗心衰药物的疗效,目的是预先应对心衰风险。基因检测发现血管紧张素转换酶(ACE)基因发生了突变(rs577350502,g.63488533C>A),其特点是内含子缺失单核苷酸变异:结论:虽然以前没有报道过这一变异与任何特定疾病相关,但我们推测,它可能会导致该患者易患心肌梗死和冠心病。这一观察结果突显了研究急性心肌梗死中 ACE 基因插入/缺失多态性的重要性,并强调了进一步验证该变异及其他相关疾病中与急性心肌梗死有关的遗传标记的必要性。
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引用次数: 0
Identification of a Novel Mitochondrial tRNA Mutation in Chinese Family with Type 2 Diabetes Mellitus 在中国 2 型糖尿病家族中发现新型线粒体 tRNA 基因突变
Pub Date : 2024-04-17 DOI: 10.2147/pgpm.s438978
Xing Li, Jinyao Shang, Shuang Li, Yue Wang
Background: Mutations in mitochondrial tRNA (mt-tRNA) could be the origin of some type 2 diabetes mellitus (T2DM) cases, but the mechanism remained largely unknown.
Aim: The aim of this study was to assess the impact of a novel mitochondrial tRNACys/tRNATyr A5826G mutation on the development and progression of T2DM.
Methods: A four-generation Han Chinese family with maternally inherited diabetes underwent clinical, genetic and biochemical analyses. The mitochondrial DNA (mtDNA) mutations of three matrilineal relatives were screened by PCR-Sanger sequencing. Furthermore, to see whether m.A5826G mutations affected mitochondrial functions, the cybrid cell lines were derived from three subjects with m.A5826G mutation and three controls without this mutation. ATP was evaluated by luminescent cell viability assay, mitochondrial membrane potential (MMP), and reactive oxygen species (ROS) were determined by flow cytometry. The student’s two-tailed, unpaired t-test was used to assess the statistical significance between the control and mutant results.
Results: The age at onset of diabetes in this pedigree varied from 40 to 63 years, with an average of 54 years. Mutational analysis of mitochondrial genomes revealed the presence of a novel m.A5826G mutation. Interestingly, the m.A5826G mutation occurred at the conjunction between tRNACys and tRNATyr, a very conserved position that was critical for tRNAs processing and functions. Using trans-mitochondrial cybrid cells, we found that mutant cells carrying the m.A5826G showed approximately 36.5% and 22.4% reductions in ATP and MMP, respectively. By contrast, mitochondrial ROS levels increased approximately 33.3%, as compared with the wild type cells.
Conclusion: A novel m.A5826G mutation was identified in a pedigree with T2DM, and this mutation would lead to mitochondrial dysfunction. Thus, the genetic spectrum of mitochondrial diabetes was expanded by including m.A5826G mutation in tRNACys/tRNATyr, our study provided novel insight into the molecular pathogenesis, early diagnosis, prevention and clinical treatment for mitochondrial diabetes.

背景:目的:本研究旨在评估新型线粒体tRNACys/tRNATyr A5826G突变对T2DM发病和进展的影响:一个四代同堂的汉族糖尿病家族接受了临床、遗传和生化分析。通过 PCR-Sanger 测序筛选了三个母系亲属的线粒体 DNA(mtDNA)突变。此外,为了了解 m.A5826G 突变是否会影响线粒体功能,还从三名 m.A5826G 突变患者和三名未发生该突变的对照组中提取了细胞杂交系。通过发光细胞活力测定评估 ATP,通过流式细胞仪测定线粒体膜电位(MMP)和活性氧(ROS)。采用学生双尾非配对 t 检验来评估对照组和突变组结果之间的统计学意义:结果:该血统中糖尿病患者的发病年龄从 40 岁到 63 岁不等,平均 54 岁。线粒体基因组的突变分析表明存在新型 m.A5826G 突变。有趣的是,m.A5826G 突变发生在 tRNACys 和 tRNATyr 之间的连接处,这是一个非常保守的位置,对 tRNA 的加工和功能至关重要。通过使用跨线粒体细胞杂交细胞,我们发现携带 m.A5826G 的突变细胞的 ATP 和 MMP 分别降低了约 36.5% 和 22.4%。相比之下,线粒体 ROS 水平比野生型细胞增加了约 33.3%:结论:在一个患有 T2DM 的血统中发现了一种新型 m.A5826G 突变,这种突变会导致线粒体功能障碍。我们的研究为线粒体糖尿病的分子发病机制、早期诊断、预防和临床治疗提供了新的见解。
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引用次数: 0
Severe Vincristine-Induced Peripheral Neuropathic Weakness in Both Lower Limbs in an Asian Adolescent with CYP3A4 rs2740574 TT Genotype 一名 CYP3A4 rs2740574 TT 基因型亚裔青少年因长春新碱引起的严重双下肢外周神经病理性乏力症
Pub Date : 2024-04-16 DOI: 10.2147/pgpm.s460878
Dongdong Zhang, Jie Bai
Background: Vincristine (VCR)-induced peripheral neuropathy (VIPN) is a common adverse reaction during cancer treatment, typically characterized by numbness and paresthesias. This study aimed to report a rare case of VIPN with an atypical genotype, manifesting as grade 3 weakness of the lower limbs.
Case Presentation: A 19-year-old man, diagnosed with alveolar rhabdomyosarcoma for 8 months, was transferred to our hospital for further treatment after the failure of first-line treatment. He developed severe long-standing weakness in both lower limbs and could not walk after four sessions of second-line chemotherapy. The diagnosis of VIPN was confirmed based on the patient’s physical examination, imaging studies, electromyogram results, and treatment history. Furthermore, the pharmacogenetic analysis indicated that the patient harbored CYP3A4 rs2740574 TT genotypes.
Conclusion: We have reported for the first time a VIPN patient whose main clinical manifestation is severe weakness in both lower limbs, accompanied by the CYP3A4 rs2740574 TT phenotype. This case may provide new information on the phenotypic features of VIPN, and may help to better understand the disease pathogenesis and contributing factors.

背景:长春新碱(VCR)诱发的周围神经病变(VIPN)是癌症治疗过程中常见的不良反应,典型特征是麻木和麻痹。本研究旨在报告一例罕见的非典型基因型 VIPN 病例,表现为 3 级下肢无力:一名被诊断为肺泡横纹肌肉瘤 8 个月的 19 岁男子,在一线治疗失败后转入我院接受进一步治疗。在接受了四个疗程的二线化疗后,他的双下肢长期严重无力,无法行走。根据患者的体格检查、影像学检查、肌电图结果和治疗史,确诊为 VIPN。此外,药物基因分析表明,患者携带 CYP3A4 rs2740574 TT 基因型:我们首次报道了一名主要临床表现为双下肢严重无力并伴有 CYP3A4 rs2740574 TT 表型的 VIPN 患者。该病例可能为 VIPN 的表型特征提供了新的信息,并有助于更好地理解疾病的发病机制和诱因。
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引用次数: 0
Downregulation of NAT1 Expression is Associated with Poor Prognosis and Immune Infiltration in COAD NAT1 表达下调与 COAD 预后不良和免疫渗透有关
Pub Date : 2024-04-16 DOI: 10.2147/pgpm.s455490
Houxi Xu, Hongqun Zhang, Songxian Sun, Jingyuan Zhang, Jiege Huo, Chunxiang Zhou
Background: An increasing corpus of evidence has identified the involvement of N-acetyltransferase 1 (NAT1), a member of the NAT family, in the progression of various cancers. However, the specific function of NAT1 in colon cancer (COAD) remains elusive. This study aims to decip her the role of NAT1 in COAD and its associated mechanisms.
Methods: The Tumor Immunity Evaluation Resource (TIMER), The Cancer Genome Atlas (TCGA), and the Gene Expression Omnibus (GEO) databases were employed to assess the NAT1 expression level in COAD. The differential expression between COAD and normal colon tissue was further validated using quantitative real-time reverse-transcription PCR (RT-qPCR) and Western blot (WB) analyses. Additionally, survival analysis of NAT1 in COAD was carried out using the PrognoScan database and TCGA dataset. The functions of NAT1 were explored through gene set enrichment analysis (GSEA) and immuno-infiltration analysis.
Results: There was a significant reduction in NAT1 expression in COAD samples compared to normal tissue. Notably, low NAT1 expression in COAD correlated significantly with various clinical parameters such as tumor stage (T stage, N stage, M stage, pathologic stage), primary therapy outcome, carcinoembryonic antigen (CEA) level, and lymphatic invasion. The downregulation of NAT1 was also strongly linked with poor outcomes in overall survival (OS), progression-free interval (PFI), and disease-specific survival (DSS). Cox regression analysis highlighted NAT1 as an independent prognostic indicator for overall survival in COAD patients. GSEA results revealed NAT1’s involvement in multiple pathways, including the neuroactive ligand-receptor interaction, olfactory transduction, olfactory signaling, extracellular matrix receptor interaction, calcium signaling, and focal adhesion pathways. Furthermore, NAT1 expression was found to significantly correlate with infiltration levels of various immune cells.
Conclusion: The findings reveal NAT1’s potential as a valuable prognostic biomarker for COAD. Moreover, its associated mechanisms offer insights that might pave the way for therapeutic interventions for COAD patients.

背景:越来越多的证据表明,NAT 家族成员 N-乙酰转移酶 1(NAT1)参与了各种癌症的进展。然而,NAT1在结肠癌(COAD)中的具体功能仍然难以捉摸。本研究旨在揭示 NAT1 在 COAD 中的作用及其相关机制:方法:采用肿瘤免疫评估资源(TIMER)、癌症基因组图谱(TCGA)和基因表达总库(GEO)数据库评估 COAD 中 NAT1 的表达水平。通过定量实时逆转录 PCR(RT-qPCR)和 Western 印迹(WB)分析进一步验证了 COAD 与正常结肠组织之间的表达差异。此外,还利用 PrognoScan 数据库和 TCGA 数据集对 NAT1 在 COAD 中的存活率进行了分析。通过基因组富集分析(GSEA)和免疫渗透分析探讨了NAT1的功能:结果:与正常组织相比,COAD样本中NAT1的表达明显减少。值得注意的是,NAT1在COAD中的低表达与肿瘤分期(T期、N期、M期、病理分期)、初治结果、癌胚抗原(CEA)水平和淋巴侵袭等各种临床参数显著相关。NAT1 的下调还与总生存期(OS)、无进展间期(PFI)和疾病特异性生存期(DSS)的不良预后密切相关。Cox回归分析显示,NAT1是影响COAD患者总生存期的独立预后指标。GSEA结果显示,NAT1参与了多种通路,包括神经活性配体-受体相互作用、嗅觉转导、嗅觉信号转导、细胞外基质受体相互作用、钙信号转导和病灶粘附通路。此外,研究还发现 NAT1 的表达与各种免疫细胞的浸润水平显著相关:结论:研究结果揭示了 NAT1 作为 COAD 有价值的预后生物标志物的潜力。结论:研究结果揭示了 NAT1 作为 COAD 有价值的预后生物标志物的潜力,而且其相关机制为 COAD 患者的治疗干预提供了启示。
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引用次数: 0
Identification of Lower Grade Glioma Antigens Based on Ferroptosis Status for mRNA Vaccine Development 根据铁突变状态鉴定低级别胶质瘤抗原以开发 mRNA 疫苗
Pub Date : 2024-04-11 DOI: 10.2147/pgpm.s449230
Zhenxiang Zhao, Na Xing, Hao Guo, Jianfeng Li, Guozhu Sun
Purpose: mRNA vaccines represent a promising and innovative strategy within the realm of cancer immunotherapy. However, their efficacy in treating lower-grade glioma (LGG) requires evaluation. Ferroptosis exhibits close associations with the initiation, evolution, and suppression of cancer. In this study, we explored the landscape of the ferroptosis-associated tumor microenvironment to facilitate the development of mRNA vaccines for LGG patients.
Patients and Methods: Genomic and clinical data of the LGG patients was obtained from the Cancer Genome Atlas (TCGA) and Chinese Glioma Genome Atlas (CGGA) databases. Ferroptosis-related tumor antigens were identified based on differential expression, mutation status, correlation with antigen-presenting cells, and prognosis, relevance to immunogenic cell death (ICD). Antigen expression levels in LGG specimens and cell lines were validated using real time-polymerase chain reaction (RT-PCR). Consensus clustering was employed for patient classification. The immune landscapes of ferroptosis subtypes were further characterized, including immune responses, prognostic ability, tumor microenvironment, and tumor-related signatures.
Results: Five tumor antigens, namely, HOTAIR, IDO1, KIF20A, NR5A2, and RRM2 were identified in LGG. RT-PCR demonstrated higher expression of these genes in LGG compared to the control. Twelve gene modules and four ferroptosis subtypes (FS1-FS4) of LGG were defined. FS2 and FS4, characterized as “cold” tumors due to their decreased tumor mutation burden (TMB) and immune checkpoint proteins (ICPs), were deemed appropriate candidates for the mRNA vaccine.
Conclusion: HOTAIR, IDO1, KIF20A, NR5A2, and RRM2 were identified as promising candidate antigens for the development of an LGG mRNA vaccine, particularly offering potential benefits to FS2 and FS4 patients.

Keywords: ferroptosis, lower grade glioma, mRNA vaccine, immunotherapy
目的:mRNA 疫苗是癌症免疫疗法领域一种前景广阔的创新策略。然而,它们在治疗低级别胶质瘤(LGG)方面的疗效还需要评估。铁突变与癌症的发生、演变和抑制密切相关。在这项研究中,我们探索了与铁突变相关的肿瘤微环境,以促进针对 LGG 患者的 mRNA 疫苗的开发:LGG患者的基因组和临床数据来自癌症基因组图谱(TCGA)和中国胶质瘤基因组图谱(CGGA)数据库。根据差异表达、突变状态、与抗原递呈细胞的相关性、预后以及与免疫原性细胞死亡(ICD)的相关性,确定了铁粒体病相关肿瘤抗原。利用实时聚合酶链反应(RT-PCR)验证了 LGG 标本和细胞系中的抗原表达水平。患者分类采用共识聚类法。研究进一步描述了铁锈色素沉着病亚型的免疫图谱,包括免疫反应、预后能力、肿瘤微环境和肿瘤相关特征:结果:在LGG中发现了五种肿瘤抗原,即HOTAIR、IDO1、KIF20A、NR5A2和RRM2。RT-PCR显示,与对照组相比,这些基因在LGG中的表达量更高。确定了 LGG 的 12 个基因模块和 4 个铁变态亚型(FS1-FS4)。FS2和FS4因其肿瘤突变负荷(TMB)和免疫检查点蛋白(ICPs)的减少而被称为 "冷 "肿瘤,被认为是mRNA疫苗的合适候选者:结论:HOTAIR、IDO1、KIF20A、NR5A2和RRM2被确定为开发LGG mRNA疫苗的有希望的候选抗原,特别是为FS2和FS4患者提供了潜在的益处。
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引用次数: 0
Exploration of the Correlation Between GRHL1 Expression and Tumor Microenvironment in Endometrial Cancer and Immunotherapy 探讨子宫内膜癌中 GRHL1 表达与肿瘤微环境及免疫疗法之间的相关性
Pub Date : 2024-04-03 DOI: 10.2147/pgpm.s453061
Suyang Guo, Wenqi Bai, Fengjie Cui, Xin Chen, Xiaojing Fang, Honghong Shen, Xianhua Gu
Introduction: GRHL1 belongs to the family of Grainyhead-like (GRHL). Previous studies have shown that dysregulation of growth and survival pathways is associated with the GRHL family of gene cancers. Immunotherapy with checkpoint inhibitors has changed the treatment paradigm for many tumors, including endometrial cancer (EC). However, the effect of GRHL1 on immunotherapy in EC and its relationship with immune cell infiltration are poorly understood.
Methods: Differential expression of GRHL1 between EC and normal EC tissues was analyzed by searching the TCGA database, and the results were verified utilizing immunohistochemistry analyses. Next, the relationship between GRHL1, CD8+ T cells and tumor microenvironment (TME) was also investigated, and the effect of GRHL1 expression on immunotherapy in EC was evaluated.
Results: According to the findings, EC tissues had elevated expression levels of GRHL1 relative to normal tissues. Patients with EC who expressed GRHL1 at high levels experienced worse overall survival (OS) and Progression-free survival (PFS) than those whose expression was lower. In addition, GRHL1 expression was negatively correlated with CD8+ T cells, and patients with high GRHL1 expression were less effective in receiving immunotherapy.
Conclusion: The expression of GRHL1 was high in EC patients, and high expression of GRHL1 inhibits the proliferation of CD8+ T cells in the tumor microenvironment of EC and affect the efficacy of immunotherapy.

Keywords: GRHL1, endometrial cancer, tumor microenvironment, CD8+ T cells, immunotherapy
简介GRHL1属于类谷粒头(GRHL)家族。以往的研究表明,生长和生存途径的失调与 GRHL 家族基因癌症有关。检查点抑制剂的免疫疗法改变了包括子宫内膜癌(EC)在内的许多肿瘤的治疗模式。然而,人们对GRHL1对子宫内膜癌免疫疗法的影响及其与免疫细胞浸润的关系知之甚少:方法:通过搜索 TCGA 数据库分析了 EC 组织和正常 EC 组织中 GRHL1 的差异表达,并利用免疫组化分析验证了结果。接下来,研究人员还调查了GRHL1、CD8+ T细胞和肿瘤微环境(TME)之间的关系,并评估了GRHL1的表达对EC免疫治疗的影响:结果:研究发现,相对于正常组织,EC组织的GRHL1表达水平较高。高水平表达GRHL1的EC患者的总生存期(OS)和无进展生存期(PFS)均低于低水平表达者。此外,GRHL1的表达与CD8+ T细胞呈负相关,GRHL1高表达的患者接受免疫治疗的效果较差:结论:GRHL1在EC患者中高表达,高表达的GRHL1会抑制EC肿瘤微环境中CD8+ T细胞的增殖,影响免疫治疗的疗效:GRHL1、子宫内膜癌、肿瘤微环境、CD8+T细胞、免疫治疗
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引用次数: 0
The Association Between Mitochondrial tRNAGlu Variants and Hearing Loss: A Case-Control Study 线粒体 tRNAGlu 变异与听力损失的关系:一项病例对照研究
Pub Date : 2024-03-28 DOI: 10.2147/pgpm.s441281
Xuejiao Yu, Sheng Li, Qinxian Guo, Jianhang Leng, Yu Ding
Purpose: This study aimed to examine the frequencies of mt-tRNAGlu variants in 180 pediatric patients with non-syndromic hearing loss (NSHL) and 100 controls.
Methods: Sanger sequencing was performed to screen for mt-tRNAGlu variants. These mitochondrial DNA (mtDNA) pathogenic mutations were further assessed using phylogenetic conservation and haplogroup analyses. We also traced the origins of the family history of probands carrying potential pathogenic mtDNA mutations. Mitochondrial functions including mtDNA content, ATP and reactive oxygen species (ROS) were examined in cells derived from patients carrying the mt-tRNAGlu A14692G and CO1/tRNASer(UCN) G7444A variants and controls.
Results: We identified four possible pathogenic variants: m.T14709C, m.A14683G, m.A14692G and m.A14693G, which were found in NSHL patients but not in controls. Genetic counseling suggested that one child with the m.A14692G variant had a family history of NSHL. Sequence analysis of mtDNA suggested the presence of the CO1/tRNASer(UCN) G7444A and mt-tRNAGlu A14692G variants. Molecular analysis suggested that, compared with the controls, patients with these variants exhibited much lower mtDNA copy numbers, ATP production, whereas ROS levels increased (p< 0.05 for all), suggesting that the m.A14692G and m.G7444A variants led to mitochondrial dysfunction.
Conclusion: mt-tRNAGlu variants are important risk factors for NSHL.

Plain Language Summary: The main aim of our study was to explore the association between the mt-tRNAGlu variants and hearing loss. We found that m.T14709C, m.A14683G, m.A14692G and m.A14693G variants were associated with hearing impairments, these variants localized at extremely conserved nucleotides of mt-tRNAGlu and may result a failure in tRNA metabolism, furthermore, patients with mt-tRNAGlu variants exhibited much lower levels of mtDNA copy number, ATP as compared with controls, whereas ROS increased. As a result, mt-tRNAGlu variants may serve as biomarkers for mitochondrial deafness, and screening for tRNAGlu variants is recommended for early detection and diagnosis of mitochondrial deafness.

Keywords: deafness, mitochondrial tRNAGlu variants, pediatrics, tRNA metabolism
目的:本研究旨在检测180名儿童非综合征性听力损失(NSHL)患者和100名对照者中mt-tRNAGlu变体的频率:方法:对 mt-tRNAGlu 变体进行桑格测序筛选。通过系统发育保护和单倍群分析进一步评估了这些线粒体 DNA(mtDNA)致病变异。我们还追踪了携带潜在致病性 mtDNA 突变的病例的家族史起源。我们对携带 mt-tRNAGlu A14692G 和 CO1/tRNASer(UCN) G7444A 变异的患者和对照组的细胞进行了线粒体功能(包括 mtDNA 含量、ATP 和活性氧(ROS))检测:我们发现了四个可能的致病变体:m.T14709C、m.A14683G、m.A14692G 和 m.A14693G,这些变体在 NSHL 患者中发现,但在对照组中没有发现。遗传咨询显示,一名m.A14692G变异体患儿有NSHL家族史。mtDNA序列分析表明存在CO1/tRNASer(UCN) G7444A和mt-tRNAGlu A14692G变体。分子分析表明,与对照组相比,具有这些变异体的患者的 mtDNA 拷贝数和 ATP 产量都低得多,而 ROS 水平却升高了(p< 0.05 for all),这表明 m.A14692G 和 m.G7444A 变异体导致了线粒体功能障碍。我们发现m.T14709C、m.A14683G、m.A14692G和m.A14693G变异与听力障碍有关,这些变异定位于mt-tRNAGlu极其保守的核苷酸,可能导致tRNA代谢失败,此外,与对照组相比,mt-tRNAGlu变异患者的mtDNA拷贝数和ATP水平低得多,而ROS水平则升高。因此,mt-tRNAGlu变体可作为线粒体耳聋的生物标志物,建议筛查tRNAGlu变体以早期发现和诊断线粒体耳聋。关键词:耳聋;线粒体tRNAGlu变体;儿科;tRNA代谢
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引用次数: 0
Natural Language Processing for Radiation Oncology: Personalizing Treatment Pathways 放射肿瘤学的自然语言处理:个性化治疗路径
Pub Date : 2024-02-13 DOI: 10.2147/pgpm.s396971
Hui Lin, Lisa Ni, Christina Phuong, Julian C Hong
Abstract: Natural language processing (NLP), a technology that translates human language into machine-readable data, is revolutionizing numerous sectors, including cancer care. This review outlines the evolution of NLP and its potential for crafting personalized treatment pathways for cancer patients. Leveraging NLP’s ability to transform unstructured medical data into structured learnable formats, researchers can tap into the potential of big data for clinical and research applications. Significant advancements in NLP have spurred interest in developing tools that automate information extraction from clinical text, potentially transforming medical research and clinical practices in radiation oncology. Applications discussed include symptom and toxicity monitoring, identification of social determinants of health, improving patient-physician communication, patient education, and predictive modeling. However, several challenges impede the full realization of NLP’s benefits, such as privacy and security concerns, biases in NLP models, and the interpretability and generalizability of these models. Overcoming these challenges necessitates a collaborative effort between computer scientists and the radiation oncology community. This paper serves as a comprehensive guide to understanding the intricacies of NLP algorithms, their performance assessment, past research contributions, and the future of NLP in radiation oncology research and clinics.

Keywords: artificial intelligence, personalized medicine, radiation therapy, natural language processing
摘要:自然语言处理(NLP)是一种将人类语言转化为机器可读数据的技术,它正在彻底改变包括癌症治疗在内的众多领域。本综述概述了 NLP 的发展及其为癌症患者制定个性化治疗方案的潜力。利用 NLP 将非结构化医疗数据转化为结构化可学习格式的能力,研究人员可以挖掘大数据在临床和研究应用方面的潜力。NLP 的重大进展激发了人们对开发工具的兴趣,这些工具可以自动从临床文本中提取信息,从而有可能改变放射肿瘤学的医学研究和临床实践。讨论的应用包括症状和毒性监测、健康的社会决定因素识别、改善患者与医生的沟通、患者教育和预测建模。然而,一些挑战阻碍了 NLP 优点的充分实现,如隐私和安全问题、NLP 模型的偏差以及这些模型的可解释性和可推广性。要克服这些挑战,计算机科学家和放射肿瘤学界必须通力合作。本文可作为了解 NLP 算法的复杂性、其性能评估、过去的研究贡献以及 NLP 在放射肿瘤学研究和临床中的未来的综合指南。 关键词:人工智能、个性化医疗、放射治疗、自然语言处理
{"title":"Natural Language Processing for Radiation Oncology: Personalizing Treatment Pathways","authors":"Hui Lin, Lisa Ni, Christina Phuong, Julian C Hong","doi":"10.2147/pgpm.s396971","DOIUrl":"https://doi.org/10.2147/pgpm.s396971","url":null,"abstract":"<strong>Abstract:</strong> Natural language processing (NLP), a technology that translates human language into machine-readable data, is revolutionizing numerous sectors, including cancer care. This review outlines the evolution of NLP and its potential for crafting personalized treatment pathways for cancer patients. Leveraging NLP’s ability to transform unstructured medical data into structured learnable formats, researchers can tap into the potential of big data for clinical and research applications. Significant advancements in NLP have spurred interest in developing tools that automate information extraction from clinical text, potentially transforming medical research and clinical practices in radiation oncology. Applications discussed include symptom and toxicity monitoring, identification of social determinants of health, improving patient-physician communication, patient education, and predictive modeling. However, several challenges impede the full realization of NLP’s benefits, such as privacy and security concerns, biases in NLP models, and the interpretability and generalizability of these models. Overcoming these challenges necessitates a collaborative effort between computer scientists and the radiation oncology community. This paper serves as a comprehensive guide to understanding the intricacies of NLP algorithms, their performance assessment, past research contributions, and the future of NLP in radiation oncology research and clinics.<br/><br/><strong>Keywords:</strong> artificial intelligence, personalized medicine, radiation therapy, natural language processing<br/>","PeriodicalId":501056,"journal":{"name":"Pharmacogenomics and Personalized Medicine","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139770477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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Pharmacogenomics and Personalized Medicine
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