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Article ; Online: Advances in nanobiosensors during the COVID-19 pandemic and future perspectives for the post-COVID era.

Kim, Young Jun / Min, Junhong

2024 Volume 11, Issue 1, Page(s) 3

Abstract: The unprecedented threat of the highly contagious virus, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which causes exponentially increased infections of coronavirus disease 2019 (COVID-19), highlights the weak spots of the current ... ...

Abstract	The unprecedented threat of the highly contagious virus, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which causes exponentially increased infections of coronavirus disease 2019 (COVID-19), highlights the weak spots of the current diagnostic toolbox. In the midst of catastrophe, nanobiosensors offer a new opportunity as an alternative tool to fill a gap among molecular tests, rapid antigen tests, and serological tests. Nanobiosensors surpass the potential of antigen tests because of their enhanced sensitivity, thus enabling us to see antigens as stable and easy-to-access targets. During the first three years of the COVID-19 pandemic, a substantial number of studies have reported nanobiosensors for the detection of SARS-CoV-2 antigens. The number of articles on nanobiosensors and SARS-CoV-2 exceeds the amount of nanobiosensor research on detecting previous infectious diseases, from influenza to SARS-CoV and MERS-CoV. This unprecedented publishing pace also implies the significance of SARS-CoV-2 and the present pandemic. In this review, 158 studies reporting nanobiosensors for detecting SARS-CoV-2 antigens are collected to discuss the current challenges of nanobiosensors using the criteria of point-of-care (POC) diagnostics along with COVID-specific issues. These advances and lessons during the pandemic pave the way for preparing for the post-COVID era and potential upcoming infectious diseases.
Language	English
Publishing date	2024-01-11
Publishing country	England
Document type	Journal Article ; Review
ZDB-ID	2760386-6
ISSN	2196-5404 ; 2196-5404
ISSN (online)	2196-5404
ISSN	2196-5404
DOI	10.1186/s40580-023-00410-5
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Article ; Online: Hydrogel-based technologies in liquid biopsy for the detection of circulating clinical markers: challenges and prospects.

Kim, Young Jun / Min, Junhong

Analytical and bioanalytical chemistry

2023 Volume 416, Issue 9, Page(s) 2065–2078

Abstract: Liquid biopsy, which promises noninvasive detection of tumor-derived material, has recently been highlighted because of its potential to lead us to an era of precision medicine. However, its development has encountered challenges owing to the extremely ... ...

Abstract	Liquid biopsy, which promises noninvasive detection of tumor-derived material, has recently been highlighted because of its potential to lead us to an era of precision medicine. However, its development has encountered challenges owing to the extremely low frequency and low purity of circulating tumor markers, such as circulating tumor cells (CTCs), circulating exosomes, and circulating tumor nucleic acids (ctNAs). Much effort has been made to overcome this limitation over the last decade, and an increasing number of studies have shown interest in the special characteristics of hydrogels. This hydrophilic and biocompatible polymeric network, which absorbs a large amount of water, can aid in the isolation, protection, and analysis of these low-abundance and short-lived circulating biomarkers. The role of hydrogels in liquid biopsy is extensive and ranges from enrichment to encapsulation. This review provides an overview of hydrogel-based technologies to pave the way in liquid biopsy.
MeSH term(s)	Humans ; Hydrogels ; Liquid Biopsy ; Cell-Free Nucleic Acids ; Biomarkers, Tumor ; Neoplastic Cells, Circulating/pathology
Chemical Substances	Hydrogels ; Cell-Free Nucleic Acids ; Biomarkers, Tumor
Language	English
Publishing date	2023-11-15
Publishing country	Germany
Document type	Review ; Journal Article
ZDB-ID	201093-8
ISSN	1618-2650 ; 0016-1152 ; 0372-7920
ISSN (online)	1618-2650
ISSN	0016-1152 ; 0372-7920
DOI	10.1007/s00216-023-05025-7
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Article: Comparative Analysis of Polyphenol Content and Antioxidant Activity of Different Parts of Five Onion Cultivars Harvested in Korea.

Kim, Yena / Kim, Young-Jun / Shin, Youngjae

Antioxidants (Basel, Switzerland)

2024 Volume 13, Issue 2

Abstract: Onions are typically consumed as the bulb, but the peel and root are discarded as by-products during processing. This study investigated the potential functional use of these by-products by analyzing the polyphenols, antioxidant compounds, and ... ...

Abstract	Onions are typically consumed as the bulb, but the peel and root are discarded as by-products during processing. This study investigated the potential functional use of these by-products by analyzing the polyphenols, antioxidant compounds, and antioxidant activity contained in onions. In this study, the bulb, peel, and root of five onion cultivars ('Tank', 'Bomul', 'Gujji' 'Cobra', and 'Hongbanjang') harvested in Korea were investigated. Caffeic acid and quercetin were most abundant in the peel, whereas methyl gallate was the predominant polyphenol in the bulb. Both DPPH and ABTS radical scavenging activity were higher in onion peel and root than in the bulb. These findings suggest that onion peel and roots, which are often discarded, have abundant antioxidant substances and excellent antioxidant activity. This study provides basic data for the future use of onion peel and roots as functional ingredients with high added value.
Language	English
Publishing date	2024-02-04
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2704216-9
ISSN	2076-3921
ISSN	2076-3921
DOI	10.3390/antiox13020197
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Article ; Online: Comparison study of validation parameters and measurement uncertainty of rapid analytical methods for piperine in black pepper by ultraviolet spectroscopy and high-performance liquid chromatography.

Lee, Joon-Goo / Kim, Young-Jun

Food science and biotechnology

2022 Volume 31, Issue 9, Page(s) 1133–1143

Abstract: Piperine, one of the main constituents of black pepper, is an important marker of black pepper quality because of its bio-activity and characteristic flavour. Ultraviolet spectroscopy and high-performance liquid chromatography-ultraviolet detection were ... ...

Abstract	Piperine, one of the main constituents of black pepper, is an important marker of black pepper quality because of its bio-activity and characteristic flavour. Ultraviolet spectroscopy and high-performance liquid chromatography-ultraviolet detection were used for rapid determination of piperine in black pepper. The performance parameters and measurement uncertainties of the methods were estimated to identify the most efficient method. Ultraviolet spectroscopy had good specificity and linearity. Its limit of detection was 0.65. Accuracy and precision ranged from 96.7 to 101.5% and from 0.59 to 2.12%, respectively. Measurement uncertainty was estimated as 4.29% for 49.481 g/kg (
Language	English
Publishing date	2022-06-18
Publishing country	Korea (South)
Document type	Journal Article
ZDB-ID	2000008-X
ISSN	2092-6456 ; 1226-7708
ISSN (online)	2092-6456
ISSN	1226-7708
DOI	10.1007/s10068-022-01108-w
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Article: Effects of polypropylene, polyvinyl chloride, polyethylene terephthalate, polyurethane, high-density polyethylene, and polystyrene microplastic on Nelumbo nucifera (Lotus) in water and sediment

Esterhuizen, Maranda / Kim, Young Jun

Environmental science and pollution research. 2022 Mar., v. 29, no. 12

2022

Abstract: Plastic waste is recognised as hazardous, with the risk increasing as the polymers break down in nature to secondary microplastics or even nanoplastics. The number of studies reporting on the prevalence of microplastic in every perceivable niche and ... ...

Abstract	Plastic waste is recognised as hazardous, with the risk increasing as the polymers break down in nature to secondary microplastics or even nanoplastics. The number of studies reporting on the prevalence of microplastic in every perceivable niche and bioavailable to biota is dramatically increasing. Knowledge of the ecotoxicology of microplastic is advancing as well; however, information regarding plants, specifically aquatic macrophytes, is still lacking. The present study aimed to gain more information on the ecotoxicological effects of six different polymer types as 4 mm microplastic on the morphology (germination and growth) and the physiology (catalase and glutathione S-transferase activity) of the rooted aquatic macrophyte, Nelumbo nucifera. The role of sediment was also considered by conducting all exposure both in a sediment-containing and sediment-free exposure system. Polyvinyl chloride and polyurethane exposures caused the highest inhibition of germination and growth compared to the control. However, the presence of sediment significantly decreased the adverse effects. Catalase activity was increased with exposure to polyvinyl chloride, polyurethane, and polystyrene, both in the presence and absence of sediment but more so in the sediment-free system. Glutathione S-transferase activity was significantly increased with exposure to polypropylene, polyvinyl chloride, and polyethylene terephthalate in the sediment-free system and exposure to polyethylene terephthalate and polyurethane in the absence of sediment. There was no clear correlation between the morphological and physiological effects observed. Further studies are required to understand the underlying toxicity mechanism of microplastics.
Keywords	Lotus ; Nelumbo nucifera ; bioavailability ; catalase ; ecotoxicology ; germination ; glutathione transferase ; macrophytes ; nanoplastics ; pollution ; poly(vinyl chloride) ; polyethylene ; polyethylene terephthalates ; polypropylenes ; polystyrenes ; polyurethanes ; research ; risk ; sediments ; toxicity ; wastes
Language	English
Dates of publication	2022-03
Size	p. 17580-17590.
Publishing place	Springer Berlin Heidelberg
Document type	Article
ZDB-ID	1178791-0
ISSN	1614-7499 ; 0944-1344
ISSN (online)	1614-7499
ISSN	0944-1344
DOI	10.1007/s11356-021-17033-0
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Article ; Online: Optical nanomaterial-based detection of biomarkers in liquid biopsy.

Kim, Young Jun / Rho, Won-Yeop / Park, Seung-Min / Jun, Bong-Hyun

Journal of hematology & oncology

2024 Volume 17, Issue 1, Page(s) 10

Abstract: Liquid biopsy, which is a minimally invasive procedure as an alternative to tissue biopsy, has been introduced as a new diagnostic/prognostic measure. By screening disease-related markers from the blood or other biofluids, it promises early diagnosis, ... ...

Abstract	Liquid biopsy, which is a minimally invasive procedure as an alternative to tissue biopsy, has been introduced as a new diagnostic/prognostic measure. By screening disease-related markers from the blood or other biofluids, it promises early diagnosis, timely prognostication, and effective treatment of the diseases. However, there will be a long way until its realization due to its conceptual and practical challenges. The biomarkers detected by liquid biopsy, such as circulating tumor cell (CTC) and circulating tumor DNA (ctDNA), are extraordinarily rare and often obscured by an abundance of normal cellular components, necessitating ultra-sensitive and accurate detection methods for the advancement of liquid biopsy techniques. Optical biosensors based on nanomaterials open an important opportunity in liquid biopsy because of their enhanced sensing performance with simple and practical properties. In this review article, we summarized recent innovations in optical nanomaterials to demonstrate the sensitive detection of protein, peptide, ctDNA, miRNA, exosome, and CTCs. Each study prepares the optical nanomaterials with a tailored design to enhance the sensing performance and to meet the requirements of each biomarker. The unique optical characteristics of metallic nanoparticles (NPs), quantum dots, upconversion NPs, silica NPs, polymeric NPs, and carbon nanomaterials are exploited for sensitive detection mechanisms. These recent advances in liquid biopsy using optical nanomaterials give us an opportunity to overcome challenging issues and provide a resource for understanding the unknown characteristics of the biomarkers as well as the mechanism of the disease.
MeSH term(s)	Humans ; Biomarkers ; Liquid Biopsy ; MicroRNAs ; Biopsy ; Nanostructures
Chemical Substances	Biomarkers ; MicroRNAs
Language	English
Publishing date	2024-03-14
Publishing country	England
Document type	Journal Article ; Review ; Research Support, Non-U.S. Gov't
ZDB-ID	2429631-4
ISSN	1756-8722 ; 1756-8722
ISSN (online)	1756-8722
ISSN	1756-8722
DOI	10.1186/s13045-024-01531-y
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Article ; Online: Effects of polypropylene, polyvinyl chloride, polyethylene terephthalate, polyurethane, high-density polyethylene, and polystyrene microplastic on Nelumbo nucifera (Lotus) in water and sediment.

Esterhuizen, Maranda / Kim, Young Jun

Environmental science and pollution research international

2021 Volume 29, Issue 12, Page(s) 17580–17590

Abstract	Plastic waste is recognised as hazardous, with the risk increasing as the polymers break down in nature to secondary microplastics or even nanoplastics. The number of studies reporting on the prevalence of microplastic in every perceivable niche and bioavailable to biota is dramatically increasing. Knowledge of the ecotoxicology of microplastic is advancing as well; however, information regarding plants, specifically aquatic macrophytes, is still lacking. The present study aimed to gain more information on the ecotoxicological effects of six different polymer types as 4 mm microplastic on the morphology (germination and growth) and the physiology (catalase and glutathione S-transferase activity) of the rooted aquatic macrophyte, Nelumbo nucifera. The role of sediment was also considered by conducting all exposure both in a sediment-containing and sediment-free exposure system. Polyvinyl chloride and polyurethane exposures caused the highest inhibition of germination and growth compared to the control. However, the presence of sediment significantly decreased the adverse effects. Catalase activity was increased with exposure to polyvinyl chloride, polyurethane, and polystyrene, both in the presence and absence of sediment but more so in the sediment-free system. Glutathione S-transferase activity was significantly increased with exposure to polypropylene, polyvinyl chloride, and polyethylene terephthalate in the sediment-free system and exposure to polyethylene terephthalate and polyurethane in the absence of sediment. There was no clear correlation between the morphological and physiological effects observed. Further studies are required to understand the underlying toxicity mechanism of microplastics.
MeSH term(s)	Environmental Monitoring ; Lotus ; Microplastics/toxicity ; Nelumbo ; Plastics ; Polyethylene ; Polyethylene Terephthalates ; Polypropylenes ; Polystyrenes ; Polyurethanes ; Polyvinyl Chloride ; Water ; Water Pollutants, Chemical/analysis ; Water Pollutants, Chemical/toxicity
Chemical Substances	Microplastics ; Plastics ; Polyethylene Terephthalates ; Polypropylenes ; Polystyrenes ; Polyurethanes ; Water Pollutants, Chemical ; Water (059QF0KO0R) ; Polyvinyl Chloride (9002-86-2) ; Polyethylene (9002-88-4)
Language	English
Publishing date	2021-10-20
Publishing country	Germany
Document type	Journal Article
ZDB-ID	1178791-0
ISSN	1614-7499 ; 0944-1344
ISSN (online)	1614-7499
ISSN	0944-1344
DOI	10.1007/s11356-021-17033-0
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Article ; Online: Property modulation of the alginate-based hydrogel via semi-interpenetrating polymer network (semi-IPN) with poly(vinyl alcohol).

Kim, Young Jun / Min, Junhong

International journal of biological macromolecules

2021 Volume 193, Issue Pt B, Page(s) 1068–1077

Abstract: Hydrogels have been demonstrated as an attractive tool due to their extraordinary water-absorbing property. Specifically, hydrogels composed of natural polymers like polysaccharides have long been the ideal candidate because they are abundant, affordable, ...

Abstract	Hydrogels have been demonstrated as an attractive tool due to their extraordinary water-absorbing property. Specifically, hydrogels composed of natural polymers like polysaccharides have long been the ideal candidate because they are abundant, affordable, biocompatible, and biodegradable. However, there are unmet requirements in some practical applications because they are usually brittle and unstable. Most efforts to enhance their stability have caused unintended loss of inherent advantages, including biocompatibility and biodegradability. To balance this trade-off, here we investigate the way to modulate the property of alginate-based hydrogels by hybridizing with poly(vinyl alcohol) (PVA) via a semi-interpenetrating polymer network (semi-IPN). Thanks to the synergetic effect between alginate and PVA with a semi-IPN structure, the advantages of the alginate-based hydrogel were substantially preserved while its disadvantages were comparatively covered. We tested the stimuli-responsive behavior, degradability, mechanical stability, and physicochemical stability of the present hydrogel and verified their property was modulated by the hybridization ratio between alginate and PVA. Thereafter, long-term durability was also evaluated under a non-ideal and complex aqueous environment to prove their physiological stability enough to outlast under practical or engineering conditions. Considering that the properties were by and large controllable without losing the advantages of polysaccharides, we anticipate the present approach for the hydrogel design and property tuning methods paves the way for the value-added applications for natural hydrogels in various fields.
MeSH term(s)	Alginates/chemistry ; Hydrogels/chemistry ; Polyvinyl Alcohol/chemistry
Chemical Substances	Alginates ; Hydrogels ; Polyvinyl Alcohol (9002-89-5)
Language	English
Publishing date	2021-11-16
Publishing country	Netherlands
Document type	Journal Article
ZDB-ID	282732-3
ISSN	1879-0003 ; 0141-8130
ISSN (online)	1879-0003
ISSN	0141-8130
DOI	10.1016/j.ijbiomac.2021.11.069
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Article: Property modulation of the alginate-based hydrogel via semi-interpenetrating polymer network (semi-IPN) with poly(vinyl alcohol)

Kim, Young Jun / Min, Junhong

International journal of biological macromolecules. 2021 Dec. 15, v. 193

2021

Abstract	Hydrogels have been demonstrated as an attractive tool due to their extraordinary water-absorbing property. Specifically, hydrogels composed of natural polymers like polysaccharides have long been the ideal candidate because they are abundant, affordable, biocompatible, and biodegradable. However, there are unmet requirements in some practical applications because they are usually brittle and unstable. Most efforts to enhance their stability have caused unintended loss of inherent advantages, including biocompatibility and biodegradability. To balance this trade-off, here we investigate the way to modulate the property of alginate-based hydrogels by hybridizing with poly(vinyl alcohol) (PVA) via a semi-interpenetrating polymer network (semi-IPN). Thanks to the synergetic effect between alginate and PVA with a semi-IPN structure, the advantages of the alginate-based hydrogel were substantially preserved while its disadvantages were comparatively covered. We tested the stimuli-responsive behavior, degradability, mechanical stability, and physicochemical stability of the present hydrogel and verified their property was modulated by the hybridization ratio between alginate and PVA. Thereafter, long-term durability was also evaluated under a non-ideal and complex aqueous environment to prove their physiological stability enough to outlast under practical or engineering conditions. Considering that the properties were by and large controllable without losing the advantages of polysaccharides, we anticipate the present approach for the hydrogel design and property tuning methods paves the way for the value-added applications for natural hydrogels in various fields.
Keywords	alginates ; biocompatibility ; biodegradability ; brittleness ; durability ; hybridization ; hydrogels ; synergism ; value added
Language	English
Dates of publication	2021-1215
Size	p. 1068-1077.
Publishing place	Elsevier B.V.
Document type	Article
ZDB-ID	282732-3
ISSN	1879-0003 ; 0141-8130
ISSN (online)	1879-0003
ISSN	0141-8130
DOI	10.1016/j.ijbiomac.2021.11.069
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Article ; Online: A combined in vitro-in silico method for assessing the androgenic activities of bisphenol A and its analogues.

Park, Chang Gyun / Adnan, Karim Md / Cho, Hyunki / Ryu, Chang Seon / Yoon, Juyong / Kim, Young Jun

Toxicology in vitro : an international journal published in association with BIBRA

2024 Volume 98, Page(s) 105838

Abstract: Interactions between endocrine-disruptor chemicals (EDCs) and androgen receptor (AR) have adverse effects on the endocrine system, leading to human reproductive dysfunction. Bisphenol A (BPA) is an EDC that can damage both the environment and human ... ...

Abstract	Interactions between endocrine-disruptor chemicals (EDCs) and androgen receptor (AR) have adverse effects on the endocrine system, leading to human reproductive dysfunction. Bisphenol A (BPA) is an EDC that can damage both the environment and human health. Although numerous BPA analogues have been produced as substitutes for BPA, few studies have evaluated their endocrine-disrupting abilities. We assessed the (anti)-androgenic activities of BPA and its analogues using a yeast-based reporter assay. The BPA analogues tested were bisphenol S (BPS), 4-phenylphenol (4PP), 4,4'-(9-fluorenyliden)-diphenol (BPFL), tetramethyl bisphenol F (TMBPF), and tetramethyl bisphenol A (TMBPA). We also conducted molecular docking and dynamics simulations to assess the interactions of BPA and its analogues with the ligand-binding domain of human AR (AR-LBD). Neither BPA nor its analogues had androgenic activity; however, all except BPFL exerted robust anti-androgenic effects. Consistent with the in vitro results, anti-androgenic analogues of BPA formed hydrogen bonding patterns with key residues that differed from the patterns of endogenous hormones, indicating that the analogues display in inappropriate orientations when interacting with the binding pocket of AR-LBD. Our findings indicate that BPA and its analogues disrupt androgen signaling by interacting with the AR-LBD. Overall, BPA and its analogues display endocrine-disrupting activity, which is mediated by AR.
Language	English
Publishing date	2024-05-04
Publishing country	England
Document type	Journal Article
ZDB-ID	639064-x
ISSN	1879-3177 ; 0887-2333
ISSN (online)	1879-3177
ISSN	0887-2333
DOI	10.1016/j.tiv.2024.105838
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