International Journal of Genomics最新文献

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circPTN Promotes the Progression of Non-Small Cell Lung Cancer through Upregulation of E2F2 by Sponging miR-432-5p. circPTN通过海绵miR-432-5p上调E2F2促进非小细胞肺癌的进展。
IF 2.9 4区 生物学
International Journal of Genomics Pub Date : 2022-09-20 eCollection Date: 2022-01-01 DOI: 10.1155/2022/6303996
Jiayuan Su, Jinrong Zhou, Yachan Feng, Haojie Zhang, Xinyu Zhang, Xiaorong Zhao, Yong Li, Xueling Guo
{"title":"circPTN Promotes the Progression of Non-Small Cell Lung Cancer through Upregulation of E2F2 by Sponging miR-432-5p.","authors":"Jiayuan Su,&nbsp;Jinrong Zhou,&nbsp;Yachan Feng,&nbsp;Haojie Zhang,&nbsp;Xinyu Zhang,&nbsp;Xiaorong Zhao,&nbsp;Yong Li,&nbsp;Xueling Guo","doi":"10.1155/2022/6303996","DOIUrl":"https://doi.org/10.1155/2022/6303996","url":null,"abstract":"<p><strong>Background: </strong>Non-small cell lung cancer (NSCLC) is one of the most prevalent cancers, accounting for around 80% of total lung cancer cases worldwide. Exploring the function and mechanism of circRNAs could provide insights into the diagnosis and treatment for NSCLC.</p><p><strong>Methods: </strong>In this study, we collected tumor tissues and adjacent normal tissues from NSCLC patients to detect the expression level of circPTN and analyzed the association of its expression level with the clinicopathological parameter of NSCLC patients. Moreover, the functional engagement of circPTN in NSCLC cells was examined by cell counting kit-8 (CCK-8) cell proliferation assay, transwell migration and invasion assays, and tube formation assay. Quantitative real-time polymerase chain reaction (qRT-PCR) and Western blotting (WB) analysis were used to detect gene and protein expression, respectively. The molecular targets of cicrPTN were predicted using starBase online resources, which was validated by RNA immunoprecipitation (RIP) and dual-luciferase reporter assay.</p><p><strong>Results: </strong>Compared with adjacent normal tissues, there was a remarkable increase of the circPTN levels in NSCLC tissues. A high level of circPTN expression was associated with more lymph node metastasis (LNM) and advanced TNM stages. Functionally, circPTN knockdown inhibited the proliferation, migration, and invasion and tube formation ability of NSCLC cells. We further demonstrated that circPTN regulated the malignant phenotype of NSCLC cells through targeting the miR-432-5p/E2F2 axis.</p><p><strong>Conclusion: </strong>Together, our results suggest that circPTN, which is upregulated in NSCLC tissues, could serve as a prognostic marker for NSCLC patients. circPTN regulates the malignant progression of NSCLC cells through targeting the miR-432-5p/E2F2 axis, which may be employed as a potential strategy for the management of NSCLC.</p>","PeriodicalId":13988,"journal":{"name":"International Journal of Genomics","volume":null,"pages":null},"PeriodicalIF":2.9,"publicationDate":"2022-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9553848/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"33518902","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
In Silico Study of Mercury Resistance Genes Extracted from Pseudomonas spp. Involved in Bioremediation: Understanding the Promoter Regions and Regulatory Elements. 参与生物修复的假单胞菌抗汞基因的硅片研究:启动子区域和调控元件的理解。
IF 2.9 4区 生物学
International Journal of Genomics Pub Date : 2022-08-12 eCollection Date: 2022-01-01 DOI: 10.1155/2022/6185615
Duguma Dibbisa, Gobena Wagari
{"title":"<i>In Silico</i> Study of Mercury Resistance Genes Extracted from <i>Pseudomonas</i> spp. Involved in Bioremediation: Understanding the Promoter Regions and Regulatory Elements.","authors":"Duguma Dibbisa,&nbsp;Gobena Wagari","doi":"10.1155/2022/6185615","DOIUrl":"https://doi.org/10.1155/2022/6185615","url":null,"abstract":"<p><p>Microbial genes and their product were diverse and beneficial for heavy metal bioremediation from the contaminated sites. Screening of genes and gene products plays a significant role in the detoxification of pollutants. Understanding of the promoter region and its regulatory elements is a vital implication of microbial genes. To the best of our knowledge, there is no in silico study reported so far on <i>mer</i> gene families used for heavy metal bioremediation. The motif distribution was observed densely upstream of the TSSs (transcription start sites) between +1 and -350 bp and sparsely distributed above -350 bp, according to the current study. MEME identified the best common candidate motifs of TFs (transcription factors) binding with the lowest e value (7.2<i>e</i>-033) and is the most statistically significant candidate motif. The EXPREG output of the 11 TFs with varying degrees of function such as activation, repression, transcription, and dual purposes was thoroughly examined. Data revealed that transcriptional gene regulation in terms of activation and repression was observed at 36.4% and 54.56%, respectively. This shows that most TFs are involved in transcription gene repression rather than activation. Likewise, EXPREG output revealed that transcriptional conformational modes, such as monomers, dimers, tetramers, and other factors, were also analyzed. The data indicated that most of the transcriptional conformation mode was dual, which accounts for 96%. CpG island analysis using online and offline tools revealed that the gene body had fewer CpG islands compared to the promoter regions. Understanding the common candidate motifs, transcriptional factors, and regulatory elements of the <i>mer</i> operon gene cluster using a machine learning approach could help us better understand gene expression patterns in heavy metal bioremediation.</p>","PeriodicalId":13988,"journal":{"name":"International Journal of Genomics","volume":null,"pages":null},"PeriodicalIF":2.9,"publicationDate":"2022-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9391164/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40629692","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Comprehensive Expression Profiling and Molecular Basis of CDC28 Protein Kinase Regulatory Subunit 2 in Cervical Cancer. CDC28蛋白激酶调控亚基2在宫颈癌中的综合表达谱及分子基础
IF 2.9 4区 生物学
International Journal of Genomics Pub Date : 2022-07-28 eCollection Date: 2022-01-01 DOI: 10.1155/2022/6084549
Li Qin, Xiaoqiong Luo, Xiao Qin, Hongbao Huang, Lianling Zhang, Shengcai Chen, Xiaoqin Wu, Bingsheng Huang, Jian Pan, Jingxi Wei
{"title":"Comprehensive Expression Profiling and Molecular Basis of CDC28 Protein Kinase Regulatory Subunit 2 in Cervical Cancer.","authors":"Li Qin,&nbsp;Xiaoqiong Luo,&nbsp;Xiao Qin,&nbsp;Hongbao Huang,&nbsp;Lianling Zhang,&nbsp;Shengcai Chen,&nbsp;Xiaoqin Wu,&nbsp;Bingsheng Huang,&nbsp;Jian Pan,&nbsp;Jingxi Wei","doi":"10.1155/2022/6084549","DOIUrl":"https://doi.org/10.1155/2022/6084549","url":null,"abstract":"<p><p>More and more evidence suggests the oncogenic function of overexpressed CDC28 protein kinase regulatory subunit 2 (CKS2) in various human cancers. However, <i>CKS2</i> has rarely been studied in cervical cancer. Herein, taking advantage of massive genetics data from multicenter RNA-seq and microarrays, we were the first group to perform tissue microarrays for CKS2 in cervical cancer. We were also the first to evaluate the clinical significance of <i>CKS2</i> with large samples (980 cervical cancer cases and 422 noncancer cases). We further excavated the mechanism of the tumor-promoting activities of <i>CKS2</i> in cervical cancer through analysis of genetic mutation profiles, Gene Ontology (GO), and Kyoto Encyclopedia of Genes and Genomes (KEGG) significant enrichment of genes coexpressed with <i>CKS2</i>. According to the results, expression data from multilevels unanimously supported the overexpression of <i>CKS2</i> in cervical cancer. Patients with cervical cancer in stage II from inhouse microarrays had significantly higher expression of <i>CKS2</i>, and <i>CKS2</i> overexpression had an adverse impact on the disease-free survival status of cervical cancer patients in GSE44001. Both mutation types of mRNA high and mRNA low appeared in cervical cancer cases from the TCGA Firehose project. Gene coexpressed with <i>CKS2</i> participated in pathways including the cell cycle, estrogen signaling pathway, and DNA replication. In summary, upregulated <i>CKS2</i> is closely associated with the malignant clinical development of cervical cancer and might serve as a valuable therapeutic target in cervical cancer.</p>","PeriodicalId":13988,"journal":{"name":"International Journal of Genomics","volume":null,"pages":null},"PeriodicalIF":2.9,"publicationDate":"2022-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9352497/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40675690","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Weighted Gene Correlation Network Analysis (WGCNA) of Arabidopsis Somatic Embryogenesis (SE) and Identification of Key Gene Modules to Uncover SE-Associated Hub Genes. 拟南芥体细胞胚胎发生(SE)的加权基因相关网络分析(WGCNA)和关键基因模块的鉴定,以发现 SE 相关枢纽基因。
IF 2.6 4区 生物学
International Journal of Genomics Pub Date : 2022-07-04 eCollection Date: 2022-01-01 DOI: 10.1155/2022/7471063
Kithmee K de Silva, Jim M Dunwell, Anushka M Wickramasuriya
{"title":"Weighted Gene Correlation Network Analysis (WGCNA) of <i>Arabidopsis</i> Somatic Embryogenesis (SE) and Identification of Key Gene Modules to Uncover SE-Associated Hub Genes.","authors":"Kithmee K de Silva, Jim M Dunwell, Anushka M Wickramasuriya","doi":"10.1155/2022/7471063","DOIUrl":"10.1155/2022/7471063","url":null,"abstract":"<p><p>Somatic embryogenesis (SE), which occurs naturally in many plant species, serves as a model to elucidate cellular and molecular mechanisms of embryo patterning in plants. Decoding the regulatory landscape of SE is essential for its further application. Hence, the present study was aimed at employing Weighted Gene Correlation Network Analysis (WGCNA) to construct a gene coexpression network (GCN) for <i>Arabidopsis</i> SE and then identifying highly correlated gene modules to uncover the hub genes associated with SE that may serve as potential molecular targets. A total of 17,059 genes were filtered from a microarray dataset comprising four stages of SE, i.e., stage I (zygotic embryos), stage II (proliferating tissues at 7 days of induction), stage III (proliferating tissues at 14 days of induction), and stage IV (mature somatic embryos). This included 1,711 transcription factors and 445 <i>EMBRYO DEFECTIVE</i> genes. GCN analysis identified a total of 26 gene modules with the module size ranging from 35 to 3,418 genes using a dynamic cut tree algorithm. The module-trait analysis revealed that four, four, seven, and four modules were associated with stages I, II, III, and IV, respectively. Further, we identified a total of 260 hub genes based on the degree of intramodular connectivity. Validation of the hub genes using publicly available expression datasets demonstrated that at least 78 hub genes are potentially associated with embryogenesis; of these, many genes remain functionally uncharacterized thus far. <i>In silico</i> promoter analysis of these genes revealed the presence of <i>cis</i>-acting regulatory elements, \"soybean embryo factor 4 (SEF4) binding site,\" and \"E-box\" of the napA storage-protein gene of <i>Brassica napus</i>; this suggests that these genes may play important roles in plant embryo development. The present study successfully applied WGCNA to construct a GCN for SE in <i>Arabidopsis</i> and identified hub genes involved in the development of somatic embryos. These hub genes could be used as molecular targets to further elucidate the molecular mechanisms underlying SE in plants.</p>","PeriodicalId":13988,"journal":{"name":"International Journal of Genomics","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2022-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9274236/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40592821","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
HMOX1 Attenuates the Sensitivity of Hepatocellular Carcinoma Cells to Sorafenib via Modulating the Expression of ABC Transporters. HMOX1通过调节ABC转运蛋白的表达降低肝癌细胞对索拉非尼的敏感性。
IF 2.9 4区 生物学
International Journal of Genomics Pub Date : 2022-06-27 eCollection Date: 2022-01-01 DOI: 10.1155/2022/9451557
Xian Zhu, Yinfang Zhang, Yafei Wu, Wenjing Diao, Guilong Deng, Qin Li, Chuanxing Wu
{"title":"HMOX1 Attenuates the Sensitivity of Hepatocellular Carcinoma Cells to Sorafenib via Modulating the Expression of ABC Transporters.","authors":"Xian Zhu,&nbsp;Yinfang Zhang,&nbsp;Yafei Wu,&nbsp;Wenjing Diao,&nbsp;Guilong Deng,&nbsp;Qin Li,&nbsp;Chuanxing Wu","doi":"10.1155/2022/9451557","DOIUrl":"https://doi.org/10.1155/2022/9451557","url":null,"abstract":"<p><p>Hepatocellular carcinoma (HCC) represents a common malignancy, and mechanisms of acquired sorafenib resistance during the treatment of HCC patients remain elusive. The present study performed integrated bioinformatics analysis and explored the potential action of heme oxygenase 1 (HMOX1) in sorafenib-resistant HCC cells. Differentially expressed genes (DEGs) of the sorafenib-resistant group as compared to the sorafenib-sensitive group from GSE140202 and GSE143233 were extracted. Fifty common DEGs between GSE140202 and GSE143233 were extracted. Ten hub genes were identified from the protein-protein interaction network based on common DEGs. Experimental results revealed the upregulation of HMOX1 in sorafenib-resistant HCC cells. HMOX1 silence promoted the sensitivity to sorafenib in sorafenib-resistant HCC cells; overexpression of HMOX1 attenuated the sensitivity. In addition, HMOX1 silence downregulated the mRNA expression of ABC transporters in sorafenib-resistant HCC cells, while HMOX1 overexpression upregulated mRNA expression of ABC transporter expression in HCC cells. Further analysis also revealed that high expression of HMOX1 was associated with shorter OS and DSS in HCC patients. In conclusion, our analysis identified ten hub genes associated with sorafenib resistance in HCC. Further validation studies demonstrated that HMOX1 promoted sorafenib resistance of HCC cells via modulating ABC transporter expression.</p>","PeriodicalId":13988,"journal":{"name":"International Journal of Genomics","volume":null,"pages":null},"PeriodicalIF":2.9,"publicationDate":"2022-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9253870/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40481033","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
A Cell Component-Related Prognostic Signature for Head and Neck Squamous Cell Carcinoma Based on the Tumor Microenvironment. 基于肿瘤微环境的头颈部鳞状细胞癌细胞成分相关预后特征
IF 2.9 4区 生物学
International Journal of Genomics Pub Date : 2022-06-25 eCollection Date: 2022-01-01 DOI: 10.1155/2022/6022869
Siyu Li, Yajun Gu, Junguo Wang, Dengbin Ma, Xiaoyun Qian, Xia Gao
{"title":"A Cell Component-Related Prognostic Signature for Head and Neck Squamous Cell Carcinoma Based on the Tumor Microenvironment.","authors":"Siyu Li,&nbsp;Yajun Gu,&nbsp;Junguo Wang,&nbsp;Dengbin Ma,&nbsp;Xiaoyun Qian,&nbsp;Xia Gao","doi":"10.1155/2022/6022869","DOIUrl":"https://doi.org/10.1155/2022/6022869","url":null,"abstract":"<p><p>Head and neck squamous cell carcinoma (HNSCC) is a heterogeneous disease with a high mortality rate. The tumor microenvironment (TME) is composed of numerous noncancerous cells that contribute to tumorigenesis and prediction of therapeutic effects. In this study, we aimed to develop a cell component-related prognostic model based on TME. We screened cell component enrichments from samples in The Cancer Genome Atlas (TCGA) HNSCC cohort using the xCell algorithm. Univariate Cox and multivariate Cox regression analyses were performed to establish an optimal independent risk model. The prognostic value of the model was further validated using Gene Expression Omnibus datasets. We found that patients in the low-risk group had a better outcome and activated immunity and may benefit more from the immune checkpoint inhibitor therapy. We also explored microRNAs (miRNAs) that may regulate these identified cell components, and 11 miRNA expression levels influenced the overall survival time. Moreover, their target mRNAs were differentially expressed in TCGA cohort and enriched in pathways of cell cycle pathways, extracellular matrix receptor interaction, human papillomavirus infection, and cancer. In summary, our cell component-related signature was a promising prognostic biomarker that provides new insights into the predictive value of nontumor components in the TME.</p>","PeriodicalId":13988,"journal":{"name":"International Journal of Genomics","volume":null,"pages":null},"PeriodicalIF":2.9,"publicationDate":"2022-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9252828/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40590625","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Role of Epigenetics in Modulating Phenotypic Plasticity against Abiotic Stresses in Plants. 表观遗传学在植物抗非生物胁迫的表型可塑性调控中的作用。
IF 2.9 4区 生物学
International Journal of Genomics Pub Date : 2022-06-14 eCollection Date: 2022-01-01 DOI: 10.1155/2022/1092894
Fayaz Ahmad Dar, Naveed Ul Mushtaq, Seerat Saleem, Reiaz Ul Rehman, Tanvir Ul Hassan Dar, Khalid Rehman Hakeem
{"title":"Role of Epigenetics in Modulating Phenotypic Plasticity against Abiotic Stresses in Plants.","authors":"Fayaz Ahmad Dar,&nbsp;Naveed Ul Mushtaq,&nbsp;Seerat Saleem,&nbsp;Reiaz Ul Rehman,&nbsp;Tanvir Ul Hassan Dar,&nbsp;Khalid Rehman Hakeem","doi":"10.1155/2022/1092894","DOIUrl":"https://doi.org/10.1155/2022/1092894","url":null,"abstract":"<p><p>Plants being sessile are always exposed to various environmental stresses, and to overcome these stresses, modifications at the epigenetic level can prove vital for their long-term survival. Epigenomics refers to the large-scale study of epigenetic marks on the genome, which include covalent modifications of histone tails (acetylation, methylation, phosphorylation, ubiquitination, and the small RNA machinery). Studies based on epigenetics have evolved over the years especially in understanding the mechanisms at transcriptional and posttranscriptional levels in plants against various environmental stimuli. Epigenomic changes in plants through induced methylation of specific genes that lead to changes in their expression can help to overcome various stress conditions. Recent studies suggested that epigenomics has a significant potential for crop improvement in plants. By the induction and modulation of various cellular processes like DNA methylation, histone modification, and biogenesis of noncoding RNAs, the plant genome can be activated which can help in achieving a quicker response against various plant stresses. Epigenetic modifications in plants allow them to adjust under varied environmental stresses by modulating their phenotypic plasticity and at the same time ensure the quality and yield of crops. The plasticity of the epigenome helps to adapt the plants during pre- and postdevelopmental processes. The variation in DNA methylation in different organisms exhibits variable phenotypic responses. The epigenetic changes also occur sequentially in the genome. Various studies indicated that environmentally stimulated epimutations produce variable responses especially in differentially methylated regions (DMR) that play a major role in the management of stress conditions in plants. Besides, it has been observed that environmental stresses cause specific changes in the epigenome that are closely associated with phenotypic modifications. However, the relationship between epigenetic modifications and phenotypic plasticity is still debatable. In this review, we will be discussing the role of various factors that allow epigenetic changes to modulate phenotypic plasticity against various abiotic stress in plants.</p>","PeriodicalId":13988,"journal":{"name":"International Journal of Genomics","volume":null,"pages":null},"PeriodicalIF":2.9,"publicationDate":"2022-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9213152/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40391752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 10
Significance of a Tumor Mutation Burden Gene Signature with Prognosis and Immune Feature of Gastric Cancer Patients. 肿瘤突变负担基因标记与胃癌患者预后和免疫特征的意义
IF 2.9 4区 生物学
International Journal of Genomics Pub Date : 2022-06-08 eCollection Date: 2022-01-01 DOI: 10.1155/2022/7684606
Li Xiang, Chuan Lan
{"title":"Significance of a Tumor Mutation Burden Gene Signature with Prognosis and Immune Feature of Gastric Cancer Patients.","authors":"Li Xiang,&nbsp;Chuan Lan","doi":"10.1155/2022/7684606","DOIUrl":"https://doi.org/10.1155/2022/7684606","url":null,"abstract":"<p><p>Gastric cancer (GC) is a common digestive tumor which ranks the fourth most common malignancy worldwide. Immunotherapy is a promising treatment for GC, especially for advanced gastric cancer (AGC). However, in clinical practice, not all patients are sensitive to immunotherapy. Recent studies showed that tumor mutation burden (TMB) is closely correlated with the response of immunotherapy. The current study identified a TMB-related genes' signature to predict the prognosis and immune feature of GC patients. Firstly, we acquired the TMB data and expression data from The Cancer Genome Atlas (TCGA) and the National Center for Biotechnology Information (NCBI) GEO databases. Then, we extracted TMB-related genes from the expression data of TCGA and two GEO cohorts. By using univariate Cox analysis, we identified that the 429 genes were correlated to GC patients' overall survival. Subsequently, an immune prognostic signature was constructed by using the least absolute shrinkage and selection operator analysis (LASSO) and multivariate Cox regression analysis. The signature could be utilized to predict the prognosis of GC patients. In addition, the signature showed a closed correlation with immune feature of GC patients. In conclusion, our risk signature could offer hints for the prognosis of GC patients and might provide insights to formulate new immunotherapy strategies for GC patients.</p>","PeriodicalId":13988,"journal":{"name":"International Journal of Genomics","volume":null,"pages":null},"PeriodicalIF":2.9,"publicationDate":"2022-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9201710/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40012684","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Identification of Novel circRNA-Based ceRNA Network Involved in the Pathogenesis of Gastric Cancer 基于circrna的新型ceRNA网络在胃癌发病机制中的鉴定
IF 2.9 4区 生物学
International Journal of Genomics Pub Date : 2022-05-31 DOI: 10.1155/2022/5281846
Dengfa Peng, Li Feng, Huqing Li
{"title":"Identification of Novel circRNA-Based ceRNA Network Involved in the Pathogenesis of Gastric Cancer","authors":"Dengfa Peng, Li Feng, Huqing Li","doi":"10.1155/2022/5281846","DOIUrl":"https://doi.org/10.1155/2022/5281846","url":null,"abstract":"Objective Evidence increasingly shows that circular RNAs (circRNAs) are closely associated with tumorigenesis and cancer progression. However, the roles of circRNAs and the underlying mechanism behind these circRNAs in gastric cancer (GC) remain to be elucidated. This study is aimed at conferring a better understanding of GC pathogenesis with a specific focus on circRNA-based ceRNA action. Methods circRNA expression profiles were downloaded from two Gene Expression Omnibus (GEO) microarray datasets, GSE152309 and GSE121445. Expression profiles of miRNAs and mRNAs were collected from The Cancer Genome Atlas (TCGA) database. The ceRNA network was constructed based on circRNA-miRNA pairs and miRNA-mRNA pairs. Functional and pathway enrichment analyses were performed to evaluate functional pathways of differentially expressed mRNAs (DEmRNAs). The PPI network was constructed by mapping DEmRNAs into the STRING database to identify hub genes, and then the DEcircRNA-DEmiRNA-hub gene subnetwork was constructed. The expression levels of candidate differentially expressed circRNAs (DEcircRNAs) in cancerous and matched noncancerous gastric tissues surgically resected from 52 GC patients were determined by the RT-qPCR analysis. Results Differential expression analysis with Venn diagram analysis showed 11 overlapped DEcircRNAs (7 upregulated circRNAs and 4 downregulated ones) between cancerous tissues and noncancerous gastric tissues. The DEcircRNA-DEmiRNA-DEmRNA network was constructed, consisting of 2 DEcircRNAs, 7 DEmiRNAs, and 104 DEmRNAs. GO and KEGG pathway analyses revealed that 104 DEmRNAs might be associated with GC development and progression. The PPI network was constructed, yielding 16 hub genes, TFDP1, KRAS, LMNB1, MET, MYBL2, CDC25A, E2F5, HMGA1, HMGA2, CBFB, CBX3, CDC7, IGF2BP3, KIF11, PDGFB, and SMC1A, which were all upregulated in GC tissues compared with adjacent tumor-free gastric tissues. Based on the above hub genes in GC, the DEcircRNA-DEmiRNA-hub gene subnetwork was reconstructed based on hsa_circ_0000384 and hsa_circ_0000043, including 22 pairs of the upcircRNA-downmiRNA-upmRNA network. The expression levels of hsa_circ_0000384 and hsa_circ_0000043 were remarkably higher in GC tissues than those in matched adjacent tumor-free gastric tissues (p < 0.001), concurring with the bioinformatics results. Conclusion Our study offers a better understanding of circRNA-related ceRNA regulatory mechanism in the pathogenesis of GC, highlighting two ceRNA networks based on hsa_circ_0000384 and hsa_circ_0000043.","PeriodicalId":13988,"journal":{"name":"International Journal of Genomics","volume":null,"pages":null},"PeriodicalIF":2.9,"publicationDate":"2022-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41559612","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Three Prognostic Biomarkers Correlate with Immune Checkpoint Blockade Response in Bladder Urothelial Carcinoma 三种预后生物标志物与膀胱尿路上皮癌免疫检查点阻断反应相关
IF 2.9 4区 生物学
International Journal of Genomics Pub Date : 2022-05-26 DOI: 10.1155/2022/3342666
Ya Guo, Yin Bin Zhang, Yi Li, Wang Hui Su, Sha He, S. Pan, Kun Xu, W. Kou
{"title":"Three Prognostic Biomarkers Correlate with Immune Checkpoint Blockade Response in Bladder Urothelial Carcinoma","authors":"Ya Guo, Yin Bin Zhang, Yi Li, Wang Hui Su, Sha He, S. Pan, Kun Xu, W. Kou","doi":"10.1155/2022/3342666","DOIUrl":"https://doi.org/10.1155/2022/3342666","url":null,"abstract":"Aim We aim to develop a signature that could accurately predict prognosis and evaluate the response to immune checkpoint blockade (ICB) in bladder urothelial carcinoma (BLCA). Methods Based on comprehensive analysis of public database, we identified prognosis-related hub genes and investigated their predictive values for the ICB response in BLCA. Results Among 69 common DEGs, three genes (AURKA, BIRC5, and CKS1B) were associated with poor prognosis, and which were related to histological subtypes, TP53 mutation status, and the C2 (IFN-gamma dominant) subtype. Three genes and their related risk model can effectively predict the response of immunotherapy. Their related drugs were identified through analysis of drug bank database. Conclusions Three genes could predict prognosis and evaluate the response to ICB in BLCA.","PeriodicalId":13988,"journal":{"name":"International Journal of Genomics","volume":null,"pages":null},"PeriodicalIF":2.9,"publicationDate":"2022-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42772605","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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