Hwajung Lee
Ewha Womans University · 医学
研究室紹介
Professor Hwajung Lee's research lab specializes in the development of targeted radiopharmaceuticals and molecular imaging agents for neurodegenerative diseases and cancer. The lab focuses on enhancing blood-brain barrier penetration using transferrin receptor-mediated transport systems and exploring metabolic biomarkers for early cancer diagnosis. Key research directions include antisense PNA-based imaging, modulation of drug transporters like P-glycoprotein, and the discovery of natural compounds that influence drug resistance and amyloid pathology. The lab integrates radiochemistry, mass spectrometry, and molecular pharmacology to advance precision diagnostics and theranostics.
Research Overview
Research Output Trend
Figures are computed from collected data and may differ slightly.
Selected Papers
15Abeta 1-40 is a potential peptide radiopharmaceutical that could be used to image the brain Abeta amyloid of Alzheimer disease in vivo, should this peptide be made transportable through the blood-brain barrier in vivo. The blood-brain barrier transport of [ 125 I]-Abeta 1-40 in a transgenic mouse model was enabled by conjugation to the rat 8D3 monoclonal antibody to the mouse transferrin receptor. The Abeta 1-40 -8D3 conjugate is a bifunctional molecule that binds the blood-brain barrier TfR and
To evaluate changes in tryptophan metabolism and discover diagnostic biomarkers for gastric cancer, a quantitative method was developed for tryptophan and its seven metabolites (indole-3-lactic acid, anthranilic acid, serotonin, nicotinic acid, kynurenic acid, kynurenine and 3-indoxyl sulfate) in both human serum and gastric juice using liquid chromatography-tandem mass spectrometry (LC-MS/MS). Serum and gastric juice were prepared with a simple protein precipitation using aqueous 0.1% formic ac
UNLABELLED: Disease-specific genes of unknown function can be imaged in vivo with antisense radiopharmaceuticals, providing the transcellular transport of these molecules is enabled with drug-targeting technology. The current studies describe the production of 16-mer peptide nucleic acid (PNA) that is antisense around the methionine initiation codon of the huntingtin gene of Huntington's disease (HD). METHODS: The PNA is biotinylated, which allows for rapid capture by a conjugate of streptavidin
(-)-Syringaresinol and tricin, isolated from the AcOEt-soluble extract of the whole plants of Sasa borealis (Gramineae), showed inhibitory effects on the P-glycoprotein in adriamycin-resistant human breast cancer cells, MCF-7/ADR.
Non ionic, amphipathic molecules form vesicles and this property correlates with the disruption of membranes. In the present studies, high mM concentrations of aliphatic alcohols, 1-O-hexyldiglycerol (HDG) and 1-O-heptyltriglycerol (HTG), are shown to cause enhanced drug transport into brain via disruption of the blood-brain barrier (BBB) in vivo, as determined with an internal carotid artery perfusion method. The intravenous administration of comparable concentrations of HDG or HTG caused no in
This study examined the effects of the kaempferol derivatives extracted from Zingiber zerumbet on the accumulation and efflux of [(3)H]-daunomycin (DNM) in P-glycoprotein (P-gp) overexpressing multidrug resistant (MDR) human breast cancer cells, MCF-7/ADR. Of six kaempferol derivatives extracted from Z. zerumbet, kaempferol-3-O-methyl ether (1) and kaempferol-3,4'-O-dimethyl ether (2) showed a potent P-gp inhibitory effect as great as verapamil, a well-known P-gp inhibitor. The P-gp inhibitory a