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Ganglioside GM1 influences the proliferation rate of mouse induced pluripotent stem cells
( Jae-sung Ryu ),( Kyu-tae Chang ),( Ju-taek Lee ),( Malg-um Lim ),( Hyun-ki Min ),( Yoon-ju Na ),( Su-bin Lee ),( Gislain Moussavou ),( Sun-uk Kim ),( Ji-su Kim ),( Kinarm Ko ),( Kisung Ko ),( Kyung- 생화학분자생물학회(구 한국생화학분자생물학회) 2017 BMB Reports Vol.50 No.6
The ACKNOWLEDGEMENTS should be corrected as follows, "This research was supported by a grant (Code# PJ0074922012) from the Korean Rural Development Administration, and has been supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education Science and Technology (2010-0022316 and KCG5401011), and the KRIBB/KRCF Research Initiative Program (NAP), Korea. The published article in this journal was a part of the 2013 Doctoral thesis of Jae-Sung Ryu submitted to Wonkwang University, Korea." and not "This research was supported by a grant (Code# PJ0074922012) from the Korean Rural Development Administration, and has been supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education Science and Technology (2010-0022316 and KCG5401011), and the KRIBB/KRCF Research Initiative Program (NAP), Korea."
Long-Lasting Antiandrogen Withdrawal Syndrome in Castration-Resistant Prostate Cancer
Sang Jin Kim,Jae Hyun Ryu,Yun Beom Kim,Tae Young Jung 대한비뇨기종양학회 2018 대한비뇨기종양학회지 Vol.16 No.1
This is a case report of 3 patients who had a dramatic and long-term complete response after antiandrogen withdrawal. All 3 patients were diagnosed with advanced or metastatic prostate cancer with a high prostate-specific antigen (PSA) level. For all patients, we started combined androgen blockade as androgen deprivation therapy and the PSA concentration decreased to <0.1 ng/mL, but then started to increase. After discontinuation of antiandrogen the PSA concentration decreased again and has remained below the limit of sensitivity for more than 1 year in all 3 patients.
Ryu, Jinhyun,Ku, Bo Mi,Lee, Yeon Kyung,Jeong, Joo Yeon,Kang, Seokmin,Choi, Jungil,Yang, Yeongae,Lee, Dong Hoon,Roh, Gu Seob,Kim, Hyun Joon,Cho, Gyeong Jae,Choi, Wan Sung,Kim, Nayoung,Kang, Sang Soo Potamitis Press 2011 Anticancer research Vol.31 No.12
<P>High invasiveness of glioma cells is one of the reasons that patients with malignant glioma have a poor prognosis. Resveratrol, a plant compound abundant in the peel of grapes, has been suggested as a potential cancer chemopreventive agent. Therefore, we investigated the effect of resveratrol on glioma cell invasion.</P>
Ryu, Jaihyunk,Kwon, Soon-Jae,Kim, Dong-Gun,Lee, Min-Kyu,Kim, Jung Min,Jo, Yeong Deuk,Kim, Sang Hoon,Jeong, Sang Wook,Kang, Kyung-Yun,Kim, Se Won,Kim, Jin-Baek,Kang, Si-Yong The Korean Society of Plant Biotechnology 2017 식물생명공학회지 Vol.44 No.4
The kenaf plant is used widely as food and in traditional folk medicine. This study evaluated the morphological characteristics, functional compounds, and genetic diversity of 32 kenaf cultivars from a worldwide collection. We found significant differences in the functional compounds of leaves from all cultivars, including differences in levels of chlorogenic acid isomer (CAI), chlorogenic acid (CA), kaempferol glucosyl rhamnoside isomer (KGRI), kaempferol rhamnosyl xyloside (KRX), kaemperitrin (KAPT) and total phenols (TPC). The highest TPC, KAPT, CA, and KRX contents were observed in the C22 cultivars. A significant correlation was observed between flowering time and DM yield, seed yield, and four phenolic compounds (KGRI, KRX, CAI, and TPC) (P < 0.01). To assess genetic diversity, we used 80 simple sequence repeats (SSR) primer sets and identified 225 polymorphic loci in the kenaf cultivars. The polymorphism information content and genetic diversity values ranged from 0.11 to 0.79 and 12 to 0.83, with average values of 0.39 and 0.43, respectively. The cluster analysis of the SSR markers showed that the kenaf genotypes could be clearly divided into three clusters based on flowering time. Correlations analysis was conducted for the 80 SSR markers; morphological, chemical and growth traits were found for 15 marker traits (corolla, vein, petal, leaf, stem color, leaf shape, and KGRI content) with significant marker-trait correlations. These results could be used for the selection of kenaf cultivars with improved yield and functional compounds.
Ryu, Ryu,Song, Byoung-J.,Hong, Sung-Youl,Huh, Jae-Wook The Pharmaceutical Society of Korea 1996 Archives of Pharmacal Research Vol.19 No.6
Protein X is one of the subunits of pyruvate dehydrogenase complex. The biological role of this protein has not been fully elucidated, mainly because of the difficulty in its dissociation from the tightly bound dihydrolipoamide acetyltransferase-protein X subcomplex. We have found that the detachment of protein X from acetyltransferase subunit can be easily accomplished by the cycles of freezing and thawing proces. Several lines of evidence including sodium dodecyl sulfate-polyacrylamide gel electrophoresis, N-terminal amino acid sequence analysis and acetylation with $[2^{14}C]$ pyruvate confirmed that the purified protein is protein X. The purified intact form of protein X was acetylated by $[2^{14}C]$ pyruvate in the presence of py-ruvate dehydrogenase subunit.The acetylation efficiency of this protein was lower than that of acetyltransferase and was not affected by the presence of acetyltransferase.
Decreasing Effect of LidocaineㆍHCl on the Thickness of the Neuronal and Model Membrane
Sung-Min Park,Jong-Sun Park,Jae-Han Kim,Jin-Hyun Baek,Tae-Gyun Yoon,Do-Keun Lee,Won-Hyang Ryu,In-Kyo Chung,Uy Dong Sohn,Hye-Ock Jang,Il Yun 대한생리학회-대한약리학회 2013 The Korean Journal of Physiology & Pharmacology Vol.17 No.4
This study examined the mechanism of action of a local anesthetic, lidocaineㆍHCl. Energy transfer between the surface fluorescent probe, 1-anilinonaphthalene-8-sulfonic acid, and the hydrophobic fluorescent probe, 1,3-di(1-pyrenyl) propane, was used to determine the effect of lidocaineㆍHCl on the thickness (D) of the synaptosomal plasma membrane vesicles (SPMV) isolated from the bovine cerebral cortex, and liposomes of the total lipids (SPMVTL) and phospholipids (SPMVPL) extracted from the SPMV. The thickness (D) of the intact SPMV, SPMVTL and SPMVPL were 1.044±0.008, 0.914±0.005 and 0.890±0.003 (arbitrary units, n=5) at 37<sup>o</sup>C (pH 7.4), respectively. LidocaineㆍHCl decreased the thickness of the neuronal and model membrane lipid bilayers in a dose-dependent manner with a significant decrease in the thickness, even at 0.1 mM. The decreasing effect of lidocaineㆍ HCl on the membrane thickness might be responsible for some, but not all of its anesthetic action.