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Search Results (20)
  • Open Access

    REVIEW

    Molecular dynamics-driven exploration of peptides targeting SARS-CoV-2, with special attention on ACE2, S protein, Mpro, and PLpro: A review

    MOHAMAD ZULKEFLEE SABRI1, JOANNA BOJARSKA2, FAI-CHU WONG3,4, TSUN-THAI CHAI3,4,*

    BIOCELL, Vol.47, No.8, pp. 1727-1742, 2023, DOI:10.32604/biocell.2023.029272

    Abstract Molecular dynamics (MD) simulation is a computational technique that analyzes the movement of a system of particles over a given period. MD can provide detailed information about the fluctuations and conformational changes of biomolecules at the atomic level over time. In recent years, MD has been widely applied to the discovery of peptides and peptide-like molecules that may serve as severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) inhibitors. This review summarizes recent advances in such explorations, focusing on four protein targets: angiotensin-converting enzyme 2 (ACE2), spike protein (S protein), main protease (Mpro), and papain-like protease (PLpro). These four proteins are… More > Graphic Abstract

    Molecular dynamics-driven exploration of peptides targeting SARS-CoV-2, with special attention on ACE2, S protein, M<sup>pro</sup>, and PL<sup>pro</sup>: A review

  • Open Access

    ARTICLE

    Targeting LncRNA LLNLR-299G3.1 with antisense oligonucleotide inhibits malignancy of esophageal squamous cell carcinoma cells in vitro and in vivo

    LI TIAN1,#, YONGYI HUANG1,#, BAOZHEN ZHANG2,#, YI SONG1,#, LIN YANG3, QIANQIAN CHEN1, ZHENG WANG3, YILING WANG1, QIHAN HE1, WENHAN YANG1, SHUYONG YU4, TIANYU LU5, ZICHEN LIU1, KAIPING GAO1,*, XIUJUN FAN2,*, JIAN SONG4,*, RIHONG ZHAI1,*

    Oncology Research, Vol.31, No.4, pp. 463-479, 2023, DOI:10.32604/or.2023.028791

    Abstract Accumulating evidence has indicated that long non-coding RNAs (lncRNAs) play critical roles in the development and progression of cancers, including esophageal squamous cell carcinoma (ESCC). However, the mechanisms of lncRNAs in ESCC are still incompletely understood and therapeutic attempts for in vivo targeting cancer-associated lncRNA remain a challenge. By RNA-sequencing analysis, we identified that LLNLR-299G3.1 was a novel ESCC-associated lncRNA. LLNLR-299G3.1 was up-regulated in ESCC tissues and cells and promoted ESCC cell proliferation and invasion. Silencing of LLNLR-299G3.1 with ASO (antisense oligonucleotide) resulted in opposite effects. Mechanistically, LLNLR-299G3.1 bound to cancer-associated RNA binding proteins and regulated the expression of cancer-related… More >

  • Open Access

    REVIEW

    Review on marine collagen peptides induce cancer cell apoptosis, necrosis, and autophagy by reducing oxidized free radicals

    YINGHUA LUO1,#, YU ZHANG2,#, TONG ZHANG2,#, YANNAN LI2, HUI XUE2, JINGLONG CAO2, WENSHUANG HOU2, JIAN LIU2, YUHE CUI2, TING XU2, CHENGHAO JIN2,3,*

    BIOCELL, Vol.47, No.5, pp. 965-975, 2023, DOI:10.32604/biocell.2023.027729

    Abstract Marine collagen peptides (MCPs) are natural products prepared by hydrolyzing marine collagen protein through a variety of chemical methods or enzymes. MCPs have a range of structures and biological activities and are widely present in marine species. MCPs also have a small molecular weight, are easily modified, and absorbed by the body. These properties have attracted great interest from researchers studying antioxidant, anti-tumor, and anti-aging activities. MCPs of specific molecular weights have significant anti-tumor activity and no toxic side effects. Thus, MCPs have the potential use as anti-cancer adjuvant drugs. Free radicals produced by oxidation are closely related to human… More >

  • Open Access

    ARTICLE

    Insilico Anticancer Peptide Prediction from Curcuma longa

    Sunil Kumar Suryawanshi1, Usha Chouhan2, Jyoti Kant Choudhari2,*

    Molecular & Cellular Biomechanics, Vol.19, No.4, pp. 191-208, 2022, DOI:10.32604/mcb.2022.023911

    Abstract Cancer is the second biggest cause of death globally, and the use of therapeutic peptides to specifically target and destroy cancer cells has gotten much interest. Cancer peptides or vaccinations are utilized to treat cancer nowadays, apart from chemotherapy, which has significant discomfort, side effects and costly. It is time demanding to identify and predict potential anticancer peptides using computational biology approaches. Thus, 3-D molecular modeling is being used to find possible ACP candidates. In this research, Curcuma longa has predicted peptide sequences were docked on breast cancer receptors and used a molecular docking technique to assess the anticipated peptides’… More >

  • Open Access

    ARTICLE

    Metabolites Composition of Bacillus subtilis HussainT-AMU Determined by LC-MS and Their Effect on Fusarium Dry Rot of Potato Seed Tuber

    Touseef Hussain1,*, Abrar A. Khan1, Heba I. Mohamed2,*

    Phyton-International Journal of Experimental Botany, Vol.92, No.3, pp. 783-799, 2023, DOI:10.32604/phyton.2022.026045

    Abstract Fusarium dry rot is considered to be the most critical soilborne and postharvest disease that damages potato tubers worldwide when they are stored for a long time. This study was performed to demonstrate the effect of crude extract, culture filtrate, and cell suspension obtained from the bacterium Bacillus subtilis HussainT-AMU, on the net house and field. From oil-contaminated soil, through the serial dilution method, biosurfactant bacteria were isolated on nutrient agar medium. To isolate and screen the prospective biosurfactant strain, various biosurfactant screening methods were used. Standard protocols were carried out for morphological, molecular, and chemical characterization. The disease incidences… More >

  • Open Access

    ARTICLE

    The peptide fraction of Bothrops jararaca snake venom induces toxicological effects on the male reproductive system after local envenomation in mice

    CARLOS ALBERTO-SILVA1,*, ANA CAROLINA DE ARAUJO1, RODRIGO SIMãO BONFIM1, JOYCE MEIRE GILIO2

    BIOCELL, Vol.47, No.2, pp. 289-295, 2023, DOI:10.32604/biocell.2023.023787

    Abstract Bothrops envenomation is complex and provokes prominent local tissue damage and systemic disturbances, but little is known about their effects on the male reproductive system. After intratesticular injection, the bioactive peptide fraction (Bj-PF) obtained from Bothrops jararaca snake venom changes the structure of different stages of the seminiferous epithelium cycle in adult mice. For the first time, we investigated whether local envenomation of Bj-PF induces toxicological effects on the male reproductive system, particularly on the seminiferous epithelium and Sertoli cells. Male adult mice were treated with 0.24 mg.kg−1 by intramuscular (i.m.) injection for 24 h. The testes samples were collected… More >

  • Open Access

    ARTICLE

    A UHPLC/MS/MS Assay Based on an Isotope-Labeled Peptide for Sensitive miR-21 Detection in HCC Serum

    Xinyue Wang1,#, Jing Xu1,#, Qihong Gu1, Dingxuan Tang1, Huoyan Ji2, Shaoqing Ju2, Feng Wang2,*, Lin Chen3, Ruoyu Yuan2,*

    Oncologie, Vol.24, No.3, pp. 513-526, 2022, DOI:10.32604/oncologie.2022.024373

    Abstract Background: MicroRNAs (miRNAs) have been identified as promising novel biomarkers for cancer diagnosis and prognosis, especially for hepatocellular carcinoma (HCC). Nowadays, the expression level of miR-21 in serum samples is a diagnostic indicator for HCC diagnosis. Thus, the quantitative determination of miRNA concentration is of significance in clinical practice. It is particularly important to establish an analytical detection method for miR-21 in patient serum. Methods: The signal readout for miR-21 was based on the mass response of a reporter peptide using an isotope dilution mass spectrometry (MS) method in this work. To be more specific, miR-21 was biotinylated before being… More >

  • Open Access

    ARTICLE

    Molecular Interaction Study to Explore the Nigella sativa Bioactive Components as an Inhibitor of Peptide Deformylase to Inhibit the Xanthomonas oryzae pv. oryzae via Applying Computational Approach

    Pravej Alam*, Thamer H. Al balawi

    Phyton-International Journal of Experimental Botany, Vol.91, No.9, pp. 1923-1931, 2022, DOI:10.32604/phyton.2022.021334

    Abstract Bacterial leaf blight (BLB) caused by Xanthomonas oryzae pv. oryzae (Xoo) is one of the most damaging diseases to rice across the world. Various chemicals have been employed so far for the management of bacterial leaf blight. On the other hand, these compounds are damaging to the ecosystem and have an impact on non-target species such as humans and animals. As a result, there is a need to create a new natural inhibitor for BLB management. Deformylase (PDF) enzyme is present in all eubacteria and its necessity in bacterial protein synthesis reveals it as an attractive target for drug development.… More >

  • Open Access

    ARTICLE

    Combined Echocardiography and Lung Ultrasound for Extubation Outcome Prediction in Children after Cardiac Surgery

    Muzi Li1,4, Hong Meng1,4,*, Liang Zhang2, Yuzi Zhou3, Chao Liang4, Zhiling Luo4, Hao Wang1,*

    Congenital Heart Disease, Vol.17, No.3, pp. 231-244, 2022, DOI:10.32604/chd.2022.019480

    Abstract Background: Children are at risk of extubation failure after congenital heart disease surgery. Such cases should be identified to avoid possible adverse consequences of failed extubation. This study aimed to identify ultrasound predictors of successful extubation in children who underwent cardiac surgery. Methods: Children aged 3 months to 6 years who underwent cardiac surgery (if they were intubated for >6 h and underwent a spontaneous breathing trial) were included in this study. Results: We included 83 children who underwent surgery for congenital heart disease. Transthoracic echocardiography and lung ultrasound were performed immediately before spontaneous breathing trials. Upon spontaneous breathing trial… More >

  • Open Access

    ARTICLE

    Calcitonin gene related peptide modified mesenchymal stem cells reduce restenosis after carotid balloon injury in rats

    PANKE CHEN*, SHUAI MA

    BIOCELL, Vol.46, No.8, pp. 1903-1909, 2022, DOI:10.32604/biocell.2022.018651

    Abstract This work aimed to investigate the effects of calcitonin gene-related peptide (CGRP)-modified mesenchymal stem cells (MSCs) on vascular stenosis in carotid balloon-injured rats. The CGRP gene labeled with EGFP was transfected into bone marrow MSCs, and CGRP protein expression in MSCs was confirmed by immunofluorescence assays. A rat carotid balloon injury model was established using a surgical method. CGRP-modified MSCs were orthotopically transplanted into the injured area of the rats. At 28 days after cell transplantation, EGFP and CD31 expression was detected by immunofluorescence staining. Hematoxylin-eosin (H&E) staining was used to detect the intima/media area of the injured carotid artery… More >

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