• Title/Summary/Keyword: Tat

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The Primary Study on Chiljung of Inherent Basic Emotion (내재된 기본 감정으로서의 칠정(七情)에 관한 초보적 연구)

  • Jung, Jong-Hyo;Choi, Geum-Ae;Kim, Kyung-Su;Kim, Kyeong-Ok
    • Journal of Oriental Neuropsychiatry
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    • v.20 no.1
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    • pp.107-118
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    • 2009
  • Objectives : One's mind turned over by environment and personal relationship is Emotion. Emotion is composed by several basic feelings. This basic feeling is called Chiljung in Oriental Medicine. This study is confirmed difference of Chiljung by Constitution. Methods : 80 persons of Oriental medicine university students were tested by Qustionnaire for the Sasang Constitution Classification II(QSCCII) and Thematic Apperception Test(TAT). Constitution is distinguished by QSCCII. 11 pieces picture of TAT were showed one minute and then had person to discribe one's feelings. Two data were analyzed by statistical analysis. Results : Result is as follows, tested TAT about expression of inherent basic emotion. 1. It has relations with cognitive thought process 2. Expression of Chiljung has some relations with constitution and personal trait. Conclusion : Chiljung of inherent basic emotion is cognitive and has difference between constitutions by TAT.

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The Belt and Road Initiative (BRI): Opportunities and Risks from Vietnamese Perspective

  • NGUYEN, Long Duc Bao;LY, Tracy Trang;TRAN, Doan Cong;TRAN, Ai Van;LE, An Quoc;HUDSON, Alan
    • The Journal of Asian Finance, Economics and Business
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    • v.9 no.4
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    • pp.229-238
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    • 2022
  • The goal of this research is to look at the Belt and Road Initiative's (BRI) goals, principles, and priorities, as well as criticisms and concerns. Another goal is to determine the Vietnamese government's best response to the BRI. Finally, the study looks at the Vietnamese viewpoint. Document review is used in conjunction with PESTELED analysis and EIU country risk model technique in this study. The study is focused on in-depth interviews with 38 top government leaders, researchers, and scholars by adopting the Delphi technique to determine major factors of risks and opportunities as well as obtain a clearer view on the Vietnamese perspective of the BRI. The main conclusion is that Vietnam's participation in the BRI could result in a variety of benefits and risks, including economic development, connectivity and integration, development finance, cooperation, coordination, trade facilitation, and people-to-people communication, as well as diplomatic and political risks, financial risks, environmental challenges, and job creation. Another conclusion is suggested that careful and case-by-case negotiation with China is needed for Vietnam to exploit the future benefits of BRI. There is a need to set up the strategy to mitigate the risk impacts, reduce the risk level, avoid risk, at last turn the risk into opportunities.

Modified SOD for Cosmeceuticals

  • Kang, Nae-Gyu;Lim, Jun-Man;Chang, Min-Youl;Park, Sun-Gyoo;Cho, Wan-Goo;Kang, She-Hoon;Park, Soo-Young
    • Proceedings of the SCSK Conference
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    • 2003.09a
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    • pp.630-644
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    • 2003
  • A human Cu, Zn-superoxide dismutase (Cu, Zn-SOD) was fused with a Tat PTD of HIV-1 to produce a novel anti-aging ingredient, Tat-SOD for cosmeceuticals. Test of stability and evaluation of transduction efficacy and enzymatic activity suggest Tat-SOD is an effective active ingredient for anti-aging treatment.

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Investigation of Trap-Assisted-Tunneling Mechanism in L-Shaped Tunneling Field-Effect-Transistor (L형 터널 트랜지스터의 트랩-보조-터널링 현상 조사)

  • Najam, Faraz;Yu, Yun Seop
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2018.10a
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    • pp.512-513
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    • 2018
  • Trap-assisted-tunneling (TAT) degrades subthreshold slope of real-world tunneling field-effect-transistors (TFET) and it should be considered in the simulation. However, its mechanism is not very well understood in line tunneling type L-shaped TFET (LTFET). This study investigates TAT mechanism in LTFETs using dynamic nonlcoal Schenk model. Both phonon assisted and direct band to trap tunneling events are considered in this study.

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Expression Profiles and Pathway Analysis in HEK 293 T Cells Overexpressing HIV-1 Tat and Nucleocapsid Using cDNA Microarray

  • Park, Seong-Eun;Lee, Min-Joo;Yang, Moon-Hee;Ahn, Ka-Young;Jang, Soo-In;Suh, Young-Ju;Myung, Hee-Joon;You, Ji-Chang;Park, Jong-Hoon
    • Journal of Microbiology and Biotechnology
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    • v.17 no.1
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    • pp.154-161
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    • 2007
  • Human immunodeficiency virus type 1 (HIV-1) infections are responsible for a substantial number of deaths annually and represent a significant threat to public health. According to the latest study, the Tat (Transactivator of transcription) protein is essential in transcription and replication of viral genes, and is among the early expression genes involved in the life cycle of HIV. The virion NC (nucleocapsid) plays an important role in early mRNA expression and contributes to the rapid viral replication that occurs during HIV-1 infection. Therefore, we attempted to elucidate the relationship between the Tat protein and nucleocapsid protein. In a comparison of two independently prepared and hybridized samples, flag NC overexpressed HEK 293T cells and pTat overexpressed HEK 293T cells, and hybridization showed the differences in expression in each case. Among the microarray results confirmed with real-time reverse transcriptase assay, twelve genes were identified to be involved according to their gene expression profiles. Of approximately 8,208 human genes that were analyzed, we monitored candidate genes that might have been related to NC and Tat genes from gene expression profiles. Additionally, the pathways could be viewed and analyzed through the use of Pathway Studio software. The pathways from the gene list were built and paths were found among the molecules/cell objects/processes by the curation method.

Transparent TIO/Ag NW/TIO Hybrid Electrode Grown on PET for Flexible Organic Solar Cell

  • Seo, Ki-Won;Lee, Ju-Hyun;Na, Seok-In;Kim, Han-ki
    • Proceedings of the Korean Vacuum Society Conference
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    • 2014.02a
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    • pp.394.2-394.2
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    • 2014
  • We fabricated highly transparent and flexible Ti doped In2O3 (TIO)/Ag nanowire(NW)/TIO (TAT) multilayer electrodes by linear facing target sputtering (LFTS) and brush-painting for used as flexible for anode organic solar cells(FOSCs). The characteristics of TAT transparent anode as a function of number of brush-painting cycles was also investigated. At optimized conditions we achieved highly flexible TAT multilayer electrodes with a low sheet resistance of $9.01{\Omega}/square$ and a high diffusive transmittance more than 80% in visible region as well as superior mechanical stability. The effective embedment of the Ag NW network between top and bottom TIO films led to a metallic conductivity, high transparency. Based on FE-SEM HRTEM, and XRD analysis, we can find that the Ag NW network was effectively embedded between top and bottom TIO layers due to good flexibility of Ag NW, the TAT multilayer showed superior flexibility than single TIO layer. Successful operation of FOSCs with high power conversion efficiency of 3.01% indicates that TAT hybrid electrode is a promising alternative to conventional ITO electrode for high performance FOSCs.

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An Engineered Outer Membrane-Defective Escherichia coli Secreting Protective Antigens against Streptococcus suis via the Twin-Arginine Translocation Pathway as a Vaccine

  • Li, Wenyu;Yin, Fan;Bu, Zixuan;Liu, Yuying;Zhang, Yongqing;Chen, Xiabing;Li, Shaowen;Li, Lu;Zhou, Rui;Huang, Qi
    • Journal of Microbiology and Biotechnology
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    • v.32 no.3
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    • pp.278-286
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    • 2022
  • Live bacterial vector vaccines are one of the most promising vaccine types and have the advantages of low cost, flexibility, and good safety. Meanwhile, protein secretion systems have been reported as useful tools to facilitate the release of heterologous antigen proteins from bacterial vectors. The twin-arginine translocation (Tat) system is an important protein export system that transports fully folded proteins in a signal peptide-dependent manner. In this study, we constructed a live vector vaccine using an engineered commensal Escherichia coli strain in which amiA and amiC genes were deleted, resulting in a leaky outer membrane that allows the release of periplasmic proteins to the extracellular environment. The protective antigen proteins SLY, enolase, and Sbp against Streptococcus suis were targeted to the Tat pathway by fusing a Tat signal peptide. Our results showed that by exploiting the Tat pathway and the outer membrane-defective E. coli strain, the antigen proteins were successfully secreted. The strains secreting the antigen proteins were used to vaccinate mice. After S. suis challenge, the vaccinated group showed significantly higher survival and milder clinical symptoms compared with the vector group. Further analysis showed that the mice in the vaccinated group had lower burdens of bacteria load and slighter pathological changes. Our study reports a novel live bacterial vector vaccine that uses the Tat system and provides a new alternative for developing S. suis vaccine.

Protective effects of Tat-NQO1 against oxidative stress-induced HT-22 cell damage, and ischemic injury in animals

  • Jo, Hyo Sang;Kim, Duk-Soo;Ahn, Eun Hee;Kim, Dae Won;Shin, Min Jea;Cho, Su Bin;Park, Jung Hwan;Lee, Chi Hern;Yeo, Eun Ji;Choi, Yeon Joo;Yeo, Hyeon Ji;Chung, Christine Seok Young;Cho, Sung-Woo;Han, Kyu Hyung;Park, Jinseu;Eum, Won Sik;Choi, Soo Young
    • BMB Reports
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    • v.49 no.11
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    • pp.617-622
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    • 2016
  • Oxidative stress is closely associated with various diseases and is considered to be a major factor in ischemia. NAD(P)H: quinone oxidoreductase 1 (NQO1) protein is a known antioxidant protein that plays a protective role in various cells against oxidative stress. We therefore investigated the effects of cell permeable Tat-NQO1 protein on hippocampal HT-22 cells, and in an animal ischemia model. The Tat-NQO1 protein transduced into HT-22 cells, and significantly inhibited against hydrogen peroxide ($H_2O_2$)-induced cell death and cellular toxicities. Tat-NQO1 protein inhibited the Akt and mitogen activated protein kinases (MAPK) activation as well as caspase-3 expression levels, in $H_2O_2$ exposed HT-22 cells. Moreover, Tat-NQO1 protein transduced into the CA1 region of the hippocampus of the animal brain and drastically protected against ischemic injury. Our results indicate that Tat-NQO1 protein exerts protection against neuronal cell death induced by oxidative stress, suggesting that Tat-NQO1 protein may potentially provide a therapeutic agent for neuronal diseases.

Effect of silk fibroin peptide derived from silkworm Bombyx mori on the anti-inflammatory effect of Tat-SOD in a mice edema model

  • Kim, Dae-Won;Hwang, Hyun-Sook;Kim, Duk-Soo;Sheen, Seung-Hoon;Heo, Dong-Hwa;Hwang, Gyo-Jun;Kang, Suk-Hyung;Kweon, Hae-Yong;Jo, You-Young;Kang, Seok-Woo;Lee, Kwang-Gill;Park, Kye-Won;Han, Kyu-Hyung;Park, Jin-Seu;Eum, Won-Sik;Cho, Yong-Jun;Choi, Hyun-Chul;Choi, Soo-Young
    • BMB Reports
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    • v.44 no.12
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    • pp.787-792
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    • 2011
  • We investigated whether silk fibroin peptide derived from the silkworm, Bombyx mori, could inhibit inflammation and enhance the anti-inflammatory activity of Tat-superoxide dismutase (Tat-SOD), which was previously reported to effectively penetrate various cells and tissues and exert anti-oxidative activity in a mouse model of inflammation. Inflammation was induced by topical treatment of mouse ears with 12-O-tetradecanoylphorbol-13-acetate (TPA). Histological, Western blot, and reverse transcription-polymerase chain reaction data demonstrated that silk fibroin peptide or Tat-SOD alone could suppress elevated levels of cyclooxygenase-2, interleukin-6, interleukin-1beta, and tumor necrosis factor-alpha induced by TPA. Moreover, silk fibroin peptide significantly enhanced the anti-inflammatory activity of Tat-SOD, although it had no influence on in vitro and in vivo transduction of Tat-SOD. Silk fibroin peptide exhibited anti-inflammatory activity in a mice model of inflammation. Therefore, silk fibroin peptide alone or in combination with Tat-SOD might be used as a therapeutic agent for various inflammatory diseases.

HIV-1 Tat-mediated protein transduction of human brain creatine kinase into PC12 cells

  • Jeong, Min-Seop;Kim, Dae-Won;Lee, Min-Jung;Lee, Yeom-Pyo;Kim, So-Young;Lee, Sun-Hwa;Jang, Sang-Ho;Lee, Kil-Soo;Park, Jin-Seu;Kang, Tae-Cheon;Cho, Sung-Woo;Kwon, Oh-Shin;Eum, Won-Sik;Choi, Soo-Young
    • BMB Reports
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    • v.41 no.7
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    • pp.537-541
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    • 2008
  • Epilepsy is characterized by the presence of spontaneous episodes of abnormal neuronal discharges and its pathogenic mechanisms remain poorly understood. Recently, we found that the expression of creatine kinase (CK) was markedly decreased in an epilepsy animal model using proteomic analysis. A human CK gene was fused with a HIV-1 Tat peptide to generate an in-frame Tat-CK fusion protein. The purified Tat-CK fusion protein was efficiently transduced into PC12 cells in a time- and dose-dependent manner when added exogenously to culture media. Once inside the cells, the transduced Tat-CK fusion protein was stable for 48 h. Moreover, the Tat-CK fusion protein markedly increased endogenous CK activity levels within the cells. These results suggest that Tat-CK provides a strategy for the therapeutic delivery of proteins in various human diseases including the delivery of CK for potential epilepsy treatment.