Publications by authors named "Seul Ah Kim"

HER2 overexpression significantly contributes to the aggressive nature and recurrent patterns observed in various solid tumors, notably gastric cancers. Trastuzumab, HER2-targeting monoclonal antibody drug, has shown considerable clinical success; however, readily emerging drug resistance emphasizes the pressing need for improved interventions in HER2-overexpressing cancers. To address this, we proposed targeting the protein-protein interaction (PPI) between ELF3 and MED23 as an alternative therapeutic approach to trastuzumab.

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Obesity and metabolic dysfunction-associated fatty liver disease (MAFLD) are prevalent metabolic disorders with substantial global health implications that are often inadequately addressed by current treatments and may have side effects. Probiotics have emerged as promising therapeutic agents owing to their beneficial effects on gut health and metabolism. This study investigated the synergistic effects of a probiotic combination of BNR17 and ABF21069 on obesity and MAFLD in C57BL/6 mice fed a high-sucrose diet.

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Hyaluronic acid (HA) has been approved to be added to milk and other dairy products, it has highly water-binding ability, which can combine with a large number of water molecules through intramolecular hydrogen bonding to form high viscous gels. In addition, HA is one of the prebiotics, can provide health benefits such as anti-aging, anti-inflammatory, angiogenic effects, is a potential additive for enhancing the quality of yogurt. Therefore, the aim of this study was to evaluate the effect of 0%, 0.

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Branched-chain hydroxy acids (BCHAs) as bioactive metabolites of Lactobacillaceae include 2-hydroxy isovaleric acid (HIVA), 2-hydroxy isocaproic acid (HICA), and 2-hydroxy-3-methyl isovaleric acid (HMVA). Combining targeted and untargeted metabolomics, this study elucidates differences in extracellular BCHA production in , , and alongside comparing comprehensive metabolic changes. Through targeted metabolomics, BCHA production among 38 strains exhibited strain specificity, except for , which showed significantly lower BCHA production.

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This study investigates the synergistic impact of fermenting kale juice with strains on its antioxidant and anti-inflammatory properties. Kale's rich nutrient profile, especially its flavonoids, offers potential health benefits. Probiotic lactic acid bacteria are employed in kale fermentation to enhance nutrient bioavailability and generate bioactive compounds.

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Article Synopsis
  • The study focuses on EFEL8600, a bacteriocin-producing strain isolated from Korean soy-meju, emphasizing its role in flavor enhancement and pathogen inhibition during fermentation.
  • Phenotypic analysis showed that EFEL8600 produces a peptide with inhibitory activity against certain microorganisms, along with exhibiting beneficial probiotic traits like resilience to gut conditions and antioxidant properties.
  • Genomic findings confirm the presence of genes related to probiotic and bacteriocin production, suggesting EFEL8600 as a safe and effective starter culture for soymilk fermentation, offering health benefits to consumers.
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The chemotaxonomic diversity of 20 Lactiplantibacillus plantarum strains was investigated using non-targeted metabolite profiling under different culture conditions. Multivariate and metabolic pathway analyses based on GC-MS and LC-MS/MS datasets showed that amino acid metabolism, especially 2-hydroxy acids, was enriched under aerobic conditions (AE), whereas fatty acid & sugar metabolism was increased under anaerobic conditions (AN). Based on the metabolite profiles, L.

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Article Synopsis
  • The study focuses on improving the CRISPR-Cas9 genome editing technique by developing a qPCR-based assay to measure the efficiency of the Cas9-sgRNA ribonucleoprotein complex (Cas9 RNP).
  • The research used the dextransucrase gene and tested two different sgRNAs, revealing specific cleavage of the target DNA into two fragments, and measured their endonuclease activities.
  • The method was validated with other target genes and assessed the effect of high electrical fields on Cas9 RNP activity, proving that the qPCR-based assay is a reliable tool for evaluating Cas9 RNP performance.
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Multi-transmitter neurons, i.e., those that release more than one type of neurotransmitter, have been found in many organisms and brain areas.

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Lactiplantibacillus plantarum PMO 08 has been used as a probiotic starter culture for plant-based fermented beverages, with various health-promoting effects such as cholesterol-lowering and anti-inflammatory activities. This study aimed to analyze the genome sequence of Lp. plantarum PMO 08 and identify its safety and probiotic characteristics at the genomic level.

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Background: Probiotic starters can improve the flavor profile, texture, and health-promoting properties of fermented foods. Tetragenococcus halophilus is a halophilic lactic acid bacterium that is a candidate starter for high-salt fermented foods. However, the species is known to produce biogenic amines, which are associated with neurotoxicity.

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Many mammalian neurons release multiple neurotransmitters to activate diverse classes of postsynaptic ionotropic receptors. Entopeduncular nucleus somatostatin (EP Sst+) projection neurons to the lateral habenula (LHb) release both glutamate and GABA, but it is unclear whether these are packaged into the same or segregated pools of synaptic vesicles. Here, we describe a method combining electrophysiology, spatially patterned optogenetics, and computational modeling designed to analyze the mechanism of glutamate/GABA co-release in mouse brain.

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The goal of this study was to develop a starter strain of which is beneficial for human health and suitable for rice fermentation. To achieve the goal, the characteristics of 25 strains of were compared in terms of health promoting potentials and rice fermenting abilities. MG7011 was selected as a superior strain to meet the required properties.

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The use of probiotic starters can improve the sensory and health-promoting properties of fermented foods. This study aimed to evaluate the suitability of probiotic lactic acid bacteria (LAB) as a starter for kimchi fermentation. Seventeen probiotic type strains were tested for their growth rates, volatile aroma compounds, metabolites, and sensory characteristics of kimchi, and their characteristics were compared to those of (.

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Leuconostoc citreum is a heterofermentative lactic acid bacterium frequently found in the various fermented foods. L. citreum EFEL2700 isolated from Korean kimchi has been used as a host strain for biotechnological applications.

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Fermenting garlic and onion provides the advantages of storage life extension, anti-oxidative and anti-diabetic activities, and their metabolite, allyl mercaptan, offers a strong aroma and various health benefits. Here, we report the probiotic properties of Lactobacillus pentosus SMB718 isolated from Korean traditional paste and its high allyl mercaptan productivity in garlic and onion fermentation. This strain was safe for use in food fermentation, as it was a non-biogenic amine producer and non-hemolytic.

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Article Synopsis
  • - The whole-genome sequence of SPC-SNU 72-2, a probiotic starter for sourdough, has been reported.
  • - Genome sequencing was carried out using Pacific Biosciences RS II and Illumina technology.
  • - This research aims to enhance understanding of the microbial traits of SPC-SNU 72-2 and its function in sourdough fermentation.
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Laphet is a traditional fermented food in Myanmar, made from tea leaves (Camellia sinensis) by fermentation with limited air passage. We performed microbial diversity analyses on 14 Laphet products collected from different locations in Myanmar. Amplicon-based sequencing results revealed Lactobacillus and Acetobacter were abundant bacteria and Candida, Pichia, Cyberlindnera, and Debaryomyces were abundant yeast.

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The industrial application of microorganisms as starters or probiotics requires their preservation to assure viability and metabolic activity. Freezing is routinely used for this purpose, but the cold damage caused by ice crystal formation may result in severe decrease in microbial activity. In this study, adaptive laboratory evolution (ALE) technique was applied to a lactic acid bacterium to select tolerant strains against freezing and thawing stresses.

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Leuconostoc citreum is an important lactic acid bacterium used as a starter culture for producing kimchi, the traditional Korean fermented vegetables. An efficient host strain for plasmid transformation, L. citreum EFEL2700, was isolated from kimchi, and it has been frequently used for genetic engineering of L.

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Phosphomannomutase (ManB) converts mannose-6-phosphate (M-6-P) to mannose-1-phosphate (M-1-P), which is a key metabolic precursor for the production of GDP--mannose used for production of glycoconjugates and post-translational modification of proteins. The aim of this study was to express the gene from in subsp. NZ9000 and to characterize the encoded enzyme.

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GDP-l-fucose is an l-fucose donor to synthesize fucosylated compounds such as human milk oligosaccharides or Lewis antigen. In this study, we used Lactococcus lactis subsp. cremoris NZ9000 to express 4 enzymes, ManB, ManC, Gmd, and WcaG and produced GDP-l-fucose by using one-pot synthesis method with mannose-6-phosphate as substrate and the enzymes as biocatalyst.

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Sourdough is made by fermentation of dough by lactic acid bacteria (LAB) and yeast to improve bread properties like volume, flavor, and texture. A Korean traditional sourdough was made by fermenting rice flour with rice wine (makgeolli) and used to make sponge-like bread (jeung-pyun). The aim of this study was to investigate the microbial diversity of makgeolli products and their influence on the organoleptic quality of jeung-pyun.

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Leuconostoc spp. are important lactic acid bacteria for the fermentation of foods. In particular, L.

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While zinc oxide (ZnO) with a mesoporous network has long been explored for adsorption of dyes and as an electron-transporting medium in dye-sensitized solar cells (DSSCs), the performance of ZnO-based DSSCs remains unsatisfactory. Despite the importance of understanding the surface characteristics of ZnO in DSSC applications, most of the studies relevant to ZnO-based DSSCs are focused on the synthesis of unique nanostructures of ZnO. In this study, we not only introduce a novel disk-shaped ZnO nanostructure, but also provide insight into the distinctive surface properties of ZnO and its influence on DSSC performance.

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