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Search Results (17)
  • Open Access

    ARTICLE

    A Comparative Study of Data Representation Techniques for Deep Learning-Based Classification of Promoter and Histone-Associated DNA Regions

    Sarab Almuhaideb1,*, Najwa Altwaijry1, Isra Al-Turaiki1, Ahmad Raza Khan2, Hamza Ali Rizvi3

    CMC-Computers, Materials & Continua, Vol.85, No.2, pp. 3095-3128, 2025, DOI:10.32604/cmc.2025.067390 - 23 September 2025

    Abstract Many bioinformatics applications require determining the class of a newly sequenced Deoxyribonucleic acid (DNA) sequence, making DNA sequence classification an integral step in performing bioinformatics analysis, where large biomedical datasets are transformed into valuable knowledge. Existing methods rely on a feature extraction step and suffer from high computational time requirements. In contrast, newer approaches leveraging deep learning have shown significant promise in enhancing accuracy and efficiency. In this paper, we investigate the performance of various deep learning architectures: Convolutional Neural Network (CNN), CNN-Long Short-Term Memory (CNN-LSTM), CNN-Bidirectional Long Short-Term Memory (CNN-BiLSTM), Residual Network (ResNet), and… More >

  • Open Access

    ARTICLE

    Numerical Evaluation of the Performance Enhancement of S-Shaped Diffuser at the Intake of Gas Turbine by Energy Promoters

    Hussain H. Al-Kayiem1,*, Raed A. Jessam2, Sinan S. Hamdi3, Ali M. Tukkee4,5

    Energy Engineering, Vol.122, No.4, pp. 1311-1335, 2025, DOI:10.32604/ee.2025.061709 - 31 March 2025

    Abstract Size reduction of the gas turbines (GT) by reducing the inlet S-shaped diffuser length increases the power-to-weight ratio. It improves the techno-economic features of the GT by lesser fuel consumption. However, this Length reduction of a bare S-shaped diffuser to an aggressive S-shaped diffuser would risk flow separation and performance reduction of the diffuser and the air intake of the GT. The objective of this research is to propose and assess fitted energy promoters (EPs) to enhance the S-shaped diffuser performance by controlling and modifying the flow in the high bending zone of the diffuser.… More >

  • Open Access

    ARTICLE

    Melanoma cell line-derived exosomal miR-424-5p: a key promoter of angiogenesis through LATS2 interaction

    JUNWEI DU, QIANG ZHANG, JING ZHANG, MAIERDANJIANG MAIHEMUTI, HAIYANG HE, RENBING JIANG*

    Oncology Research, Vol.33, No.2, pp. 357-367, 2025, DOI:10.32604/or.2024.050878 - 16 January 2025

    Abstract Objectives: Melanoma is a highly aggressive and metastatic form of cancer, and the role of exosomal microRNAs (miRNAs) in its progression remains largely unexplored. This study aimed to investigate the effects of melanoma cell-derived exosomal miR-424-5p on angiogenesis and its underlying mechanisms. Methods: Exosomes were isolated from melanoma cell lines A375 and A2058, and their effects on the proliferation, migration, and angiogenesis of human umbilical vein endothelial cells (HUVECs) were examined. The interaction between miR-424-5p and its target gene, large tumor suppressor kinase 2 (LATS2), was analyzed using luciferase reporter assays and functional experiments. In vivo,… More >

  • Open Access

    ARTICLE

    STIL enhances the development of lung adenocarcinoma by regulating the glycolysis pathway

    LEI WANG1, XIANJIN XIE2,*

    Oncology Research, Vol.33, No.1, pp. 123-132, 2025, DOI:10.32604/or.2024.048562 - 20 December 2024

    Abstract Background: To investigate SCL/TAL 1 interrupting locus (STIL)’s role and prognostic significance in lung adenocarcinoma (LUAD) progression, we examined STIL and E2 promoter binding factor 1 (E2F1) expression and their impacts on LUAD prognosis using Gene Expression Profiling Interactive Analysis (GEPIA). Methods: Functional assays including CCK-8, wound-healing, 5-ethynyl-2-deoxyuridine (EdU), Transwell assays, and flow cytometry, elucidated STIL and E2F1’s effects on cell viability, proliferation, apoptosis, and migration. Gene set enrichment analysis (GSEA) identified potential pathways, while metabolic assays assessed glucose metabolism. Results: Our findings reveal that STIL and E2F1 are overexpressed in LUAD, correlating with adverse outcomes. It enhances More >

  • Open Access

    ARTICLE

    Construction of a Yeast Hybrid Library and Identification of Proteins Regulating CaABI3/VP1-1 Expression in Capsicum annuum var. conoides

    Huiru Deng#, Huan Tian#, Liuyan Yang, Siyang Ou, Hui Wang, Guangdong Geng*, Suqin Zhang*

    Phyton-International Journal of Experimental Botany, Vol.93, No.12, pp. 3273-3291, 2024, DOI:10.32604/phyton.2024.058638 - 31 December 2024

    Abstract Hot pepper (Capsicum annuum var. conoides) is a significant vegetable that is widely cultivated around the world. Currently, global climate change has caused frequent severe weather events, and waterlogging stress harms the pepper industry by affecting the planting period, growth conditions, and disease susceptibility. The gene CaABI3/VP1-1 could improve pepper waterlogging tolerance. In order to explore the upstream regulatory mechanism of CaABI3/VP1-1, a high-quality standardized yeast hybrid library was successfully constructed for yeast one-, two-, and three-hybrid screening using pepper ‘ZHC2’ as the experimental material, with a library recombinant efficiency of up to 100%. The length of inserted… More >

  • Open Access

    ARTICLE

    Epigenetic regulation of ABCG2 promoter methylation in adolescents with hyperuricemia

    XUETING HUANG1, CHAOJIE XU2, CHEN LI3,*, ZHIXIAN PAN1,*

    BIOCELL, Vol.48, No.12, pp. 1805-1813, 2024, DOI:10.32604/biocell.2024.056431 - 30 December 2024

    Abstract Background: Hyperuricemia is a metabolic disorder which is characterized by increased serum uric acid levels, which can contribute to serious health issues such as gout, cardiovascular disease, and kidney damage. Epigenetic modifications, for example, DNA methylation, exert a crucial function in gene regulation and have been implicated in various metabolic disorders. The ATP-Binding Cassette Subfamily G Member 2 (ABCG2) gene is involved in uric acid excretion, and its expression can be influenced by methylation of its promoter region. Methods: This study involved the design of three guide RNA (gRNA) sequences targeting specific CpG sites within… More >

  • Open Access

    ARTICLE

    The interplay mechanism between IDH mutation, MGMT-promoter methylation, and PRMT5 activity in the progression of grade 4 astrocytoma: unraveling the complex triad theory

    MAHER KURDI1,*, ALAA ALKHOTANI2, ABDULRAHMAN SABBAGH3, EYAD FAIZO4, AHMED I. LARY5, AHMED K. BAMAGA6, MAJID ALMANSOURI7, BADR HAFIZ8, THAMER ALSHARIF9, SALEH BAEESA8

    Oncology Research, Vol.32, No.6, pp. 1037-1045, 2024, DOI:10.32604/or.2024.051112 - 23 May 2024

    Abstract Background: The dysregulation of Isocitrate dehydrogenase (IDH) and the subsequent production of 2-Hydroxyglutrate (2HG) may alter the expression of epigenetic proteins in Grade 4 astrocytoma. The interplay mechanism between IDH, O-6-methylguanine-DNA methyltransferase (MGMT)-promoter methylation, and protein methyltransferase proteins-5 (PRMT5) activity, with tumor progression has never been described. Methods: A retrospective cohort of 34 patients with G4 astrocytoma is classified into IDH-mutant and IDH-wildtype tumors. Both groups were tested for MGMT-promoter methylation and PRMT5 through methylation-specific and gene expression PCR analysis. Inter-cohort statistical significance was evaluated. Results: Both IDH-mutant WHO grade 4 astrocytomas (n = 22, 64.7%) and IDH-wildtype… More > Graphic Abstract

    The interplay mechanism between IDH mutation, MGMT-promoter methylation, and PRMT5 activity in the progression of grade 4 astrocytoma: unraveling the complex triad theory

  • Open Access

    ARTICLE

    Landscape of Sequence Variations in Homologous Copies of FAD2 and FAD3 in Rapeseed (Brassica napus L.) Germplasm with High/Low Linolenic Acid Trait

    Haoxue Wu#, Xiaohan Zhang§,#, Xiaoyu Chen, Kang Li, Aixia Xu, Zhen Huang, Jungang Dong, Chengyu Yu*

    Phyton-International Journal of Experimental Botany, Vol.93, No.3, pp. 627-640, 2024, DOI:10.32604/phyton.2024.050321 - 28 March 2024

    Abstract Genetic manipulation (either restraint or enhancement) of the biosynthesis pathway of α-linolenic acid (ALA) in seed oil is an important goal in Brassica napus breeding. B. napus is a tetraploid plant whose genome often harbors four and six homologous copies, respectively, of the two fatty acid desaturases FAD2 and FAD3, which control the last two steps of ALA biosynthesis during seed oil accumulation. In this study, we compared their promoters, coding sequences, and expression levels in three high-ALA inbred lines 2006L, R8Q10, and YH25005, a low-ALA line A28, a low-ALA/high-oleic-acid accession SW, and the wildtype ZS11. The expression… More >

  • Open Access

    ARTICLE

    Analysis and Verification of the Conserved MYB Binding Element in the DFR Promoter in Compositae

    Jialei Guo1,2, Fengzhen Li2, Guomin Shi3, Weimin Zhao2, Tao He1,2,*

    Phyton-International Journal of Experimental Botany, Vol.93, No.2, pp. 343-353, 2024, DOI:10.32604/phyton.2024.047429 - 27 February 2024

    Abstract Anthocyanins, ubiquitous in the Compositae family, are regulated by MYB (v-myb avian myeloblastosis viral oncogene homolog), playing an important role in anthocyanin synthesis. In this study, we analyzed the regulation pathway in which the MYB protein of subgroup 6 promotes dihydroflavonol reductase (DFR) expression in Compositae, and validated this law in Saussurea medusa through yeast one-hybrid experiments. Our results showed that MYB and DFR underwent purification selection, DFR promoter analysis revealed the presence of MYB binding site (GAGTTGAATGG) and bHLH binding site (CANNTG) at the sense strand of 84–116 nucleotide residues from the start codon. These two More >

  • Open Access

    ARTICLE

    Genetic Analysis of Variants of the MYH6 Gene Promoter in Congenital Atrial Septal Defects

    Ji-Yang Zuo1,2, Huan-Xin Chen1,2, Zhi-Gang Liu1,2, Qin Yang1,2, Guo-Wei He1,2,*

    Congenital Heart Disease, Vol.18, No.1, pp. 7-21, 2023, DOI:10.32604/chd.2022.025451 - 09 January 2023

    Abstract Background: Atrial septal defect (ASD) is one of the common congenital heart diseases. The MYH6 gene has a critical role in cardiac development but the role of MYH6 promoter variants in patients with ASD has not been explored. Methods: In 613 subjects including 320 ASD patients, we investigated the MYH6 gene promoter variants and verified the effect on gene expression by using cellular functional experiments and bioinformatics analysis. Results: Eleven variants were identified in the MYH6 gene promoter, of which four variants were found only in ASD patients, and two variants (g.3434G>C and g.4524C>T) were identified for the first… More > Graphic Abstract

    Genetic Analysis of Variants of the <i>MYH6</i> Gene Promoter in Congenital Atrial Septal Defects

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