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Kim, Cha-Young,Koo, Yoon-Duck,Jin, Jing-Bo,Moon, Byeong-Cheol,Kang, Chang-Ho,Kim, Sun-Tae,Park, Byung-Ouk,Lee, So-Young,Kim, Man-Lyang,Hwang, In-Hwan,Kang, Kyu-Young,Bahk, Jeong-Dong,Lee, Sang-Yeol,,C Plant molecular biology and biotechnology research 2003 Plant molecular biology and biotechnology research Vol.2003 No.-
ABSTRACT: Hundreds of proteins involved in signaling pathways contain a Ca^(2+)-dependent membrane-binding motif called the C2-domain. However, no small C2-domain proteins consisting of a single C2-domain have been reported in animal cells. We have isolated two cDNA clones, OsERG1a and OsERGIb, that encode two small C2-domain proteins of 156 and 159 amino acids, respectively, from a fungal elicitor-treated rice cDNA library. The clones are believed to have originated from a single gene by alternative splicing. Transcript levels of the OsERG1 gene are dramatically elvated by a fungal elicitor prepared from Magnaporthe grisea or by Ca^(2+) ions. The OsERG1 protein produced in Escherichia coli binds to phospholipid vesicles in a Ca^(2+)-dependent manner and is translocated to the plasma membrane of plant cells by treatment with either a fungal elicitor of a Ca^(2+)-ionophore. These results suggest that OsERG1 proteins containing a single C2-domain are involved in plant defense signaling systems.
Quantum Dot/Siloxane Composite Film Exceptionally Stable against Oxidation under Heat and Moisture
Kim, Hwea Yoon,Yoon, Da-Eun,Jang, Junho,Lee, Daewon,Choi, Gwang-Mun,Chang, Joon Ha,Lee, Jeong Yong,Lee, Doh C.,Bae, Byeong-Soo American Chemical Society 2016 JOURNAL OF THE AMERICAN CHEMICAL SOCIETY - Vol.138 No.50
<P>We report on the fabrication of a siloxane-encapsulated quantum dot (QD) film (QD-silox film), which exhibits stable emission intensity for over 1 month even at elevated temperature and humidity. QD-silox films are solidified via free radical addition reaction between oligosiloxane resin and ligand molecules on QDs. We prepare the QD-oligosiloxane resin by sol gel condensation reaction of silane precursors with QDs blended in the precursor solution, forgoing ligand-exchange of QDs. The resulting QD-oligosiloxane resin remains optically clear after 40 days of storage, in contrast to other QD-containing resins which turn turbid and ultimately form sediments. QDs also disperse uniformly in the QD-silox film, whose photoluminescence (PL) quantum yield (QY) remains nearly unaltered under harsh conditions; for example, 85 degrees C/5% relative humidity (RH), 85 degrees C/85% RH, strongly acidic, and strongly basic environments for 40 days. The QD-silox film appears to remain equally emissive even after being immersed into boiling water (100 degrees C). Interestingly, the PL QY of the QD-silox film noticeably increases when the film is exposed to a moist environment, which opens a new, facile avenue to curing dimmed QD-containing films. Given its excellent stability, we envision that the QD-silox film is best suited in display applications, particularly as a PL-type down-conversion layer.</P>
Improved memory and reduced anxiety in δ-catenin transgenic mice
Ryu, Taeyong,Park, Hyung Joon,Kim, Hangun,Cho, Young-Chang,Kim, Byeong C.,Jo, Jihoon,Seo, Young-Woo,Choi, Won-Seok,Kim, Kwonseop Academic Press 2019 Experimental neurology Vol.318 No.-
<P><B>Abstract</B></P> <P>δ-Catenin is abundant in the brain and affects its synaptic plasticity. Furthermore, loss of δ-catenin is related to the deficits of learning and memory, mental retardation (cri-du-chat syndrome), and autism. A few studies about δ-catenin deficiency mice were performed. However, the effect of δ-catenin overexpression in the brain has not been investigated as yet. Therefore we generated a δ-catenin overexpressing mouse model. To generate a transgenic mouse model overexpressing δ-catenin in the brain, δ-catenin plasmid having a Thy-1 promotor was microinjected in C57BL/6 mice. Our results showed δ-catenin transgenic mice expressed higher levels of N-cadherin, β-catenin, and p120-catenin than did wild type mice. Furthermore, δ-catenin transgenic mice exhibited better object recognition, better sociability, and lower anxiety than wild type mice. However, both mice groups showed a similar pattern in locomotion tests. Although δ-catenin transgenic mice show similar locomotion, they show improved sociability and reduced anxiety. These characteristics are opposite to the symptoms of autism or mental retardation, which are caused when δ-catenin is deficient. These results suggest that δ-catenin may alleviate symptoms of autism, Alzheimer's disease and mental retardation.</P> <P><B>Highlights</B></P> <P> <UL> <LI> δ-Catenin transgenic mice had improved object recognition. </LI> <LI> δ-Catenin transgenic mice showed improved social interactions. </LI> <LI> δ-Catenin transgenic mice showed less anxiety. </LI> </UL> </P>
Impact of Visceral Adipose Tissue on Clinical Outcomes After Acute Ischemic Stroke
Kim, Ja-Hae,Choi, Kang-Ho,Kang, Kyung-Wook,Kim, Joon-Tae,Choi, Seong-Min,Lee, Seung-Han,Park, Man-Seok,Kim, Byeong C.,Kim, Myeong-Kyu,Cho, Ki-Hyun Ovid Technologies Wolters Kluwer -American Heart A 2019 Stroke Vol.50 No.2
Charge-Spin Correlation in van der Waals Antiferromagnet NiPS3
Kim, So Yeun,Kim, Tae Yun,Sandilands, Luke J.,Sinn, Soobin,Lee, Min-Cheol,Son, Jaeseok,Lee, Sungmin,Choi, Ki-Young,Kim, Wondong,Park, Byeong-Gyu,Jeon, C.,Kim, Hyeong-Do,Park, Cheol-Hwan,Park, Je-Geun American Physical Society 2018 Physical Review Letters Vol.120 No.13
Roh Hyun Woong,Kim Na-Rae,이동기,Cheong Jae-Youn,Seo Sang Won,Choi Seong Hye,Kim Eun-Joo,Cho Soo Hyun,Kim Byeong C.,Kim Seong Yoon,Kim Eun Young,Chang Jaerak,Lee Sang Yoon,Yoon Dukyong,Choi Jin Wook,An Y 대한신경정신의학회 2022 PSYCHIATRY INVESTIGATION Vol.19 No.2
Objective We aimed to present the study design and baseline cross-sectional participant characteristics of biobank innovations for chronic cerebrovascular disease with Alzheimer’s disease study (BICWALZS) participants.Methods A total of 1,013 participants were enrolled in BICWALZS from October 2016 to December 2020. All participants underwent clinical assessments, basic blood tests, and standardized neuropsychological tests (n=1,013). We performed brain magnetic resonance imaging (MRI, n=817), brain amyloid positron emission tomography (PET, n=713), single nucleotide polymorphism microarray chip (K-Chip, n=949), locomotor activity assessment (actigraphy, n=200), and patient-derived dermal fibroblast sampling (n=175) on a subset of participants.Results The mean age was 72.8 years, and 658 (65.0%) were females. Based on clinical assessments, total of 168, 534, 211, 80, and 20 had subjective cognitive decline, mild cognitive impairment (MCI), Alzheimer’s dementia, vascular dementia, and other types of dementia or not otherwise specified, respectively. Based on neuroimaging biomarkers and cognition, 199, 159, 78, and 204 were cognitively normal (CN), Alzheimer’s disease (AD)-related cognitive impairment, vascular cognitive impairment, and not otherwise specified due to mixed pathology (NOS). Each group exhibited many differences in various clinical, neuropsychological, and neuroimaging results at baseline. Baseline characteristics of BICWALZS participants in the MCI, AD, and vascular dementia groups were generally acceptable and consistent with 26 worldwide dementia cohorts and another independent AD cohort in Korea.Conclusion The BICWALZS is a prospective and longitudinal study assessing various clinical and biomarker characteristics in older adults with cognitive complaints. Details of the recruitment process, methodology, and baseline assessment results are described in this paper.