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  1. Article

    Open Access

    Interplay between YAP/TAZ and metabolic dysfunction-associated steatotic liver disease progression

    Metabolic dysfunction-associated steatotic liver disease (MASLD) is becoming an increasingly pressing global health challenge, with increasing mortality rates showing an upward trend. Two million deaths occur ...

    Na Young Lee, Myeung Gi Choi, Eui ** Lee, Ja Hyun Koo in Archives of Pharmacal Research (2024)

  2. Article

    Open Access

    Hepatocyte GPCR signaling regulates IRF3 to control hepatic stellate cell transdifferentiation

    Interferon Regulatory Factor 3 (IRF3) is a transcription factor that plays a crucial role in the innate immune response by recognizing and responding to foreign antigens. Recently, its roles in sterile conditi...

    Jae-Hyun Yu, Myeung Gi Choi, Na Young Lee, Ari Kwon in Cell Communication and Signaling (2024)

  3. Article

    Open Access

    Mitochondrial stress activates YAP/TAZ through RhoA oxidation to promote liver injury

    Yes-associated protein (YAP) and WW domain-containing transcription regulator protein 1 (WWTR1; also known as TAZ) are the main effectors of the Hippo pathway and their dysregulation contributes to diseases in...

    Ari Kwon, Na Young Lee, Jae-Hyun Yu, Myeung Gi Choi, Jeongwoo Park in Cell Death & Disease (2024)

  4. Article

    Open Access

    Steady-state memory-phenotype conventional CD4+ T cells exacerbate autoimmune neuroinflammation in a bystander manner via the Bhlhe40/GM-CSF axis

    Memory-phenotype (MP) CD4+ T cells are a substantial population of conventional T cells that exist in steady-state mice, yet their immunological roles in autoimmune disease remain unclear. In this work, we unveil...

    Min-Ji Cho, Hong-Gyun Lee, Jae-Won Yoon, Gil-Ran Kim in Experimental & Molecular Medicine (2023)

  5. Article

    Open Access

    ERdj5 protects goblet cells from endoplasmic reticulum stress-mediated apoptosis under inflammatory conditions

    Endoplasmic reticulum stress is closely associated with the onset and progression of inflammatory bowel disease. ERdj5 is an endoplasmic reticulum-resident protein disulfide reductase that mediates the cleavag...

    Hyun** Jeong, Eun-Hye Hong, Jae-Hee Ahn, Jaewon Cho in Experimental & Molecular Medicine (2023)

  6. Article

    Open Access

    Nuclear factor (erythroid-derived 2)-like 2 counter-regulates thymosin beta-4 expression and primary cilium formation for HeLa cervical cancer cell survival

    We investigated the function of thymosin beta-4 (TB4) expression and primary cilium (PC) formation via the underlying Nrf2-dependent mechanism for cervical cancer cell (CC) survival under conditions of serum d...

    Jae-Wook Lee, Pham Xuan Thuy, Ja Hyun Koo, Eun-Yi Moon in Scientific Reports (2022)

  7. No Access

    Protocol

    CPP Applications in Immune Modulation and Disease Therapy

    About 30 years ago, the discovery of CPP improved the therapeutic approach to treat diseases and extended the range of potential targets to intracellular molecules. There are potential drug candidates for FDA ...

    Ja-Hyun Koo, Won-Ju Kim, Je-Min Choi in Cell Penetrating Peptides (2022)

  8. No Access

    Article

    Cell type-dependent function of LATS1/2 in cancer cell growth

    The Hippo pathway controls organ size and tissue homeostasis, and its dysregulation often contributes to tumorigenesis. Extensive studies have shown that the Hippo pathway inhibits cell proliferation, and surv...

    Wei-Wei Pan, Toshiro Moroishi, Ja Hyun Koo, Kun-Liang Guan in Oncogene (2019)

  9. Article

    Open Access

    Regulation of chitinase-3-like-1 in T cell elicits Th1 and cytotoxic responses to inhibit lung metastasis

    Chitinase-3-like-1 (Chi3l1) is known to play a significant role in the pathogenesis of Type 2 inflammation and cancer. However, the function of Chi3l1 in T cell and its clinical implications are largely unknow...

    Do-Hyun Kim, Hong-Jai Park, Sangho Lim, Ja-Hyun Koo, Hong-Gyun Lee in Nature Communications (2018)

  10. Article

    Open Access

    dNP2-ctCTLA-4 inhibits German cockroach extract-induced allergic airway inflammation and hyper-responsiveness via inhibition of Th2 responses

    German cockroaches are major household allergens that can trigger allergic airway inflammatory diseases with sensitive T-cell responses. Although the use of immune modulatory biologics, such as antibodies, to ...

    Sangho Lim, Jung Ho Sohn, Ja-Hyun Koo, Jung-Won Park in Experimental & Molecular Medicine (2017)

  11. Article

    Open Access

    Hepcidin inhibits Smad3 phosphorylation in hepatic stellate cells by impeding ferroportin-mediated regulation of Akt

    Hepatic stellate cell (HSC) activation on liver injury facilitates fibrosis. Hepatokines affecting HSCs are largely unknown. Here we show that hepcidin inhibits HSC activation and ameliorates liver fibrosis. W...

    Chang Yeob Han, Ja Hyun Koo, Sung Hoon Kim, Sara Gardenghi in Nature Communications (2016)

  12. No Access

    Article

    Farnesoid X receptor as a regulator of fuel consumption and mitochondrial function

    Maintenance of energy homeostasis is crucial for survival of organism. There exists a close link between energy metabolism and cell survival, which are coordinately regulated by common signaling pathways. Farn...

    Chang Yeob Han, Tae Hyun Kim, Ja Hyun Koo, Sang Geon Kim in Archives of Pharmacal Research (2016)

  13. No Access

    Article

    Phytochemical regulation of Fyn and AMPK signaling circuitry

    During the past decades, phytochemical terpenoids, polyphenols, lignans, flavonoids, and alkaloids have been identified as antioxidative and cytoprotective agents. Adenosine monophosphate-activated protein kin...

    Chan Gyu Lee, Ja Hyun Koo, Sang Geon Kim in Archives of Pharmacal Research (2015)

  14. Article

    Open Access

    dNP2 is a blood–brain barrier-permeable peptide enabling ctCTLA-4 protein delivery to ameliorate experimental autoimmune encephalomyelitis

    Central nervous system (CNS)-infiltrating effector T cells play critical roles in the development and progression of multiple sclerosis (MS). However, current drugs for MS are very limited due to the difficult...

    Sangho Lim, Won-Ju Kim, Yeon-Ho Kim, Sohee Lee, Ja-Hyun Koo in Nature Communications (2015)

  15. No Access

    Article

    Cell membrane penetrating function of the nuclear localization sequence in human cytokine IL-1α

    Cytokines are released from the cell, bind to their receptors, and affect cellular responses. The precursor form of interleukin 1 alpha (pIL-1α) has a nuclear localization sequence (NLS) that causes it to be l...

    Ja-Hyun Koo, Heeseok Yoon, Won-Ju Kim, Sangho Lim in Molecular Biology Reports (2014)

  16. No Access

    Article

    Electrical and optical characteristics of Co-sputtered amorphous Ce-doped indium-zinc-oxide thin-film transistors

    We report the electrical and the optical characteristics of amorphous cerium-gallium-zinc-oxide (a-CIZO) thin-film transistors (TFTs) as a function of the cerium content inside the a-CIZO channel layers. The a...

    Ja Hyun Koo, Tae Sung Kang, Tae Yoon Kim in Journal of the Korean Physical Society (2013)

  17. No Access

    Article

    Electrical features of an amorphous indium-gallium-zinc-oxide film transistor using a double active matrix with different oxygen contents

    The electrical characteristics of amorphous indium-gallium-zinc-oxide (a-IGZO) thin film transistors (TFTs) are systematically studied using a double a-IGZO active layer that is composed of a-IGZO ...

    Ja Hyun Koo, Tae Sung Kang, ** Pyo Hong in Journal of the Korean Physical Society (2012)

  18. Article

    Open Access

    Detection of circulating tumor cells in patients with gastrointestinal tract cancer using RT-PCR and its clinical implications

    To investigate the relationship between the presence of circulating tumor cells in different stages of gastrointestinal tract cancer and the subsequent relapse or distant metastasis, circulating levels of CEA ...

    Yun Hee Noh, Jung Ah Kim, G-Rewo Lim, Young Tae Ro in Experimental & Molecular Medicine (2001)

  19. No Access

    Chapter

    Regulation of Glutamine Synthetase Activity and Its Biosynthesis in Escherichia coli: Mediation by Three Cycles of Covalent Modification

    Glutamine synthetase (GS), which catalyzes the first step of nitrogen assimilation in prokaryotes, occupies a central position in the regulation of nitrogen metabolism and is vigorously regulated in response t...

    Sue Goo Rhee, Wong Gi Bang, Ja Hyun Koo, Kyung Hee Min in Enzyme Dynamics and Regulation (1988)