3 articles published in JoVE
Time-Lapse 2D Imaging of Phagocytic Activity in M1 Macrophage-4T1 Mouse Mammary Carcinoma Cells in Co-cultures Noorzaileen Eileena Zaidi1, Nur Aima Hafiza Shazali2, Adam Leow Thean Chor1, Mohd Azuraidi Osman1, Kamariah Ibrahim3, Marilyn Jaoi-Edward4, Nik Mohd Afizan Nik Abd Rahman1,2 1Department of Cell and Molecular Biology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 2Institute of Tropical Forestry and Forestry Products (INTROP), Universiti Putra Malaysia, 3Department of Biomedical Science, Faculty of Medicine, University of Malaya, 4Agro-Biotechnology Institute (ABI), National Institute of Biotechnology Malaysia (NIBM) Macrophage phagocytic activity against cancer cells, specifically 4T1 mouse mammary carcinoma cells, was imaged in this study. The live cell coculture model was established and observed using a combination of fluorescent and differential interference contrast microscopy. This assessment was imaged using imaging software to develop multipoint time-lapse video.
Development of an Electrochemical DNA Biosensor to Detect a Foodborne Pathogen Noordiana Nordin1, Nor Azah Yusof2,3, Son Radu1, Roozbeh Hushiarian4 1Laboratory of Food Safety and Food Integrity, Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, 2Laboratory of Functional Device, Institute of Advanced Technology, Universiti Putra Malaysia, 3Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, 4La Trobe Institute for Molecular Science, La Trobe University A protocol for the development of an electrochemical DNA biosensor comprising a polylactic acid-stabilized, gold nanoparticles-modified, screen-printed carbon electrode to detect Vibrio parahaemolyticus is presented.
Human Pluripotent Stem Cell Culture on Polyvinyl Alcohol-Co-Itaconic Acid Hydrogels with Varying Stiffness Under Xeno-Free Conditions Tzu-Cheng Sung*1, Hsing-Fen Li*1, Akon Higuchi1,2, Qing-Dong Ling3,4, Jia-Sin Yang1, Yeh-Chia Tseng1, Chih-Hsien Pan Pan1, Abdullah A. Alarfaj2, Murugan A. Munusamy2, Suresh Kumar5, Shih-Tien Hsu6, Kadarkarai Murugan7,8 1Department of Chemical and Materials Engineering, National Central University, 2Department of Botany and Microbiology, King Saud University, 3Cathay Medical Research Institute, Cathay General Hospital, 4Graduate Institute of Systems Biology and Bioinformatics, National Central University, 5Department of Medical Microbiology and Parasitology, Universiti Putra Malaysia, 6Department of Internal Medicine, Taiwan Landseed Hospital, 7Department of Zoology, Bharathiar University, 8Thiruvalluvar University A protocol is presented to prepare polyvinyl alcohol-co-itaconic acid hydrogels with varying stiffness, which were grafted with and without oligopeptides, to investigate the effect of the stiffness of biomaterials on the differentiation and proliferation of stem cells. The stiffness of the hydrogels was controlled by the crosslinking time.