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Down-Regulation of TGF-β Expression Sensitizes the Resistance of Hepatocellular Carcinoma Cells to Sorafenib

Kang D, Han Z, Oh GH, Joo Y, Choi HJ, Song JJ

PURPOSE: Sorafenib, a multikinase inhibitor, is the standard therapy for patients with advanced-stage hepatocellular carcinoma (HCC). However, resistance develops to the treatment, therefore, we tried to unravel the underlying mechanism...
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Aristolochia manshuriensis Kom ethyl acetate extract protects against high-fat diet-induced non-alcoholic steatohepatitis by regulating kinase phosphorylation in mouse

Kwak DH, Kim JS, Chang KT, Choo YK

Aristolochia manshuriensis Kom (AMK) is an herb used as a traditional medicine; however, it causes side effects such as nephrotoxicity and carcinogenicity. Nevertheless, AMK can be applied in specific ways...
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The Effect of DA-6034 on Intestinal Permeability in an Indomethacin-Induced Small Intestinal Injury Model

Kwak DS, Lee OY, Lee KN, Jun DW, Lee HL, Yoon BC, Choi HS

BACKGROUND/AIMS: DA-6034 has anti-inflammatory activities and exhibits cytoprotective effects in acute gastric injury models. However, explanations for the protective effects of DA-6034 on intestinal permeability are limited. This study sought...
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STAT3 and ERK Signaling Pathways Are Implicated in the Invasion Activity by Oncostatin M through Induction of Matrix Metalloproteinases 2 and 9

Ko HS, Park BJ, Choi SK, Kang HK, Kim A, Kim HS, Park IY, Shin JC

PURPOSE: Our previous studies have shown that oncostatin M (OSM) promotes trophoblast invasion activity through increased enzyme activity of matrix metalloproteinase (MMP)-2 and -9. We further investigated OSM-induced intracellular signaling...
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Tolfenamic Acid Inhibits the Proliferation, Migration, and Invasion of Nasopharyngeal Carcinoma: Involvement of p38-Mediated Down-Regulation of Slug

Jittreetat T, Shin YS, Hwang HS, Lee BS, Kim YS, Sannikorn , Kim CH

PURPOSE: Tolfenamic acid (TA), a non-steroidal anti-inflammatory drug, is known to exhibit antitumor effects in various cancers apart from nasopharyngeal cancer (NPC). NPC exhibits high invasiveness, as well as metastatic...
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Afatinib Reduces STAT6 Signaling of Host ARPE-19 Cells Infected with Toxoplasma gondii

Yang Z, Ahn HJ, Park YH, Nam HW

Specific gene expressions of host cells by spontaneous STAT6 phosphorylation are major strategy for the survival of intracellular Toxoplasma gondii against parasiticidal events through STAT1 phosphorylation by infection provoked IFN-γ....
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Antiangiogenic Activity of Acer tegmentosum Maxim Water Extract in Vitro and in Vivo

Kim EC, Kim SH, Piao SJ, Kim TJ, Bae K, Kim HS, Hong SS, Lee BI, Nam M

Angiogenesis, the formation of new blood vessels, is critical for tumor growth and metastasis. Notably, tumors themselves can lead to angiogenesis by inducing vascular endothelial growth factor (VEGF), which is...
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Agmatine Attenuates Brain Edema and Apoptotic Cell Death after Traumatic Brain Injury

Kim JY, Lee YW, Kim JH, Lee WT, Park KA, Lee JE

Traumatic brain injury (TBI) is associated with poor neurological outcome, including necrosis and brain edema. In this study, we investigated whether agmatine treatment reduces edema and apoptotic cell death after...
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Exposure to Cerium Oxide Nanoparticles Is Associated With Activation of Mitogen-activated Protein Kinases Signaling and Apoptosis in Rat Lungs

Rice KM, Nalabotu S, Manne ND, Kolli MB, Nandyala G, Arvapalli , Ma JY, Blough ER

OBJECTIVES: With recent advances in nanoparticle manufacturing and applications, potential exposure to nanoparticles in various settings is becoming increasing likely. No investigation has yet been performed to assess whether respiratory...
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P70S6K and Elf4E Dual Inhibition Is Essential to Control Bladder Tumor Growth and Progression in Orthotopic Mouse Non-muscle Invasive Bladder Tumor Model

Chi BH, Kim SJ, Seo HK, Seo HH, Lee SJ, Kwon JK, Lee TJ, Chang IH

We investigated how the dual inhibition of the molecular mechanism of the mammalian target of the rapamycin (mTOR) downstreams, P70S6 kinase (P70S6K) and eukaryotic initiation factor 4E (eIF4E), can lead...
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beta-TrCP1 degradation is a novel action mechanism of PI3K/mTOR inhibitors in triple-negative breast cancer cells

Yi YW, Kang HJ, Bae EJ, Oh S, Seong YS, Bae I

An F-box protein, beta-TrCP recognizes substrate proteins and destabilizes them through ubiquitin-dependent proteolysis. It regulates the stability of diverse proteins and functions as either a tumor suppressor or an oncogene....
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Bilirubin Activates Transcription of HIF-1alpha in Human Proximal Tubular Cells Cultured in the Physiologic Oxygen Content

Kim SG, Ahn SY, Lee ES, Kim S, Na KY, Chae DW, Chin HJ

The expression of hypoxia-inducible factor (HIF) is influenced by reactive oxygen species (ROS). Effect of bilirubin on HIF-1 expression in proximal tubular cells was investigated under physiological oxygen concentration, which...
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Tempol Attenuates Renal Fibrosis in Mice with Unilateral Ureteral Obstruction: The Role of PI3K-Akt-FoxO3a Signaling

Yoon HE, Kim SJ, Kim SJ, Chung S, Shin SJ

This study investigated whether tempol, an anti-oxidant, protects against renal injury by modulating phosphatidylinositol 3-kinase (PI3K)-Akt-Forkhead homeobox O (FoxO) signaling. Mice received unilateral ureteral obstruction (UUO) surgery with or without...
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Synergistic Effect of Interleukin-6 and Hyaluronic Acid on Cell Migration and ERK Activation in Human Keratinocytes

Choi JH, Jun JH, Kim JH, Sung HJ, Lee JH

Wound healing is initiated and progressed by complex integrated process of cellular, physiologic, and biochemical events, such as inflammation, cell migration and proliferation. Interleukin 6 (IL-6) is a multifunctional cytokine,...
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Glyceollins, a novel class of soybean phytoalexins, inhibit SCF-induced melanogenesis through attenuation of SCF/c-kit downstream signaling pathways

Shin SH, Lee YM

  • KMID: 2154236
  • Exp Mol Med.
  • 2013 Apr;45(4):e17.
The anti-melanogenesis effect of glyceollins was examined by melanin synthesis, tyrosinase activity assay in zebrafish embryos and in B16F10 melanoma cells. When developing zebrafish embryos were treated with glyceollins, pigmentation...
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Phosphatidylinositol 4-phosphate 5-kinase alpha negatively regulates nerve growth factor-induced neurite outgrowth in PC12 cells

Liu T, Lee SY

  • KMID: 2154235
  • Exp Mol Med.
  • 2013 Mar;45(3):e16.
Neurite outgrowth, a cell differentiation process involving membrane morphological changes, is critical for neuronal network and development. The membrane lipid, phosphatidylinositol (PI) 4,5-bisphosphate (PIP2), is a key regulator of many...
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Transient exposure to hydrogen peroxide inhibits the ubiquitination of phosphorylated IkappaBalpha in TNFalpha-stimulated HEK293 cells

Lee Y, Choi J, Ha KH, Jue DM

  • KMID: 1387362
  • Exp Mol Med.
  • 2012 Aug;44(8):513-520.
During ischemia-reperfusion injury, brief pre-exposure to oxidative stress renders organs resistant to subsequent severe damage. NF-kappaB is a transcription factor that is involved in reperfusion-induced inflammatory and immune responses. The...
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A new synthetic chalcone derivative, 2-hydroxy-3',5,5'-trimethoxychalcone (DK-139), suppresses the Toll-like receptor 4-mediated inflammatory response through inhibition of the Akt/NF-kappaB pathway in BV2 microglial cells

Lee YH, Jeon SH, Kim SH, Kim C, Lee SJ, Koh D, Lim Y, Ha K, Shin SY

  • KMID: 1383799
  • Exp Mol Med.
  • 2012 Jun;44(6):369-377.
Microglial cells are the resident innate immune cells that sense pathogens and tissue injury in the central nervous system (CNS). Microglial activation is critical for neuroinflammatory responses. The synthetic compound...
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Dendroaspis natriuretic peptide regulates the cardiac L-type Ca2+ channel activity by the phosphorylation of alpha1c proteins

Park SA, Kim TG, Han MK, Ha KC, Kim SZ, Kwak YG

  • KMID: 1383798
  • Exp Mol Med.
  • 2012 Jun;44(6):363-368.
Dendroaspis natriuretic peptide (DNP), a new member of the natriuretic peptide family, is structurally similar to atrial, brain, and C-type natriuretic peptides. However, the effects of DNP on the cardiac...
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p53 and DNA-dependent protein kinase catalytic subunit independently function in regulating actin damage-induced tetraploid G1 arrest

Chae HD, Kim SY, Park SE, Kim J, Shin DY

We previously reported that the p53 tumor suppressor protein plays an essential role in the induction of tetraploid G1 arrest in response to perturbation of the actin cytoskeleton, termed actin...
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