Blog of Signaling Pathways

Mutant p53 in concert with an interleukin-27 receptor alpha deficiency causes spontaneous liver inflammation, fibrosis, and steatosis in mice

0 views | Mar 21 2018

Dibra D et al. found that he combination of mutant p53 and IL27RA(-/-) causes spontaneous liver inflammation, steatosis, and fibrosis in vivo, whereas either gene alone in vivo has no effects on the liver. [Read the Full Post]

Sensitivity of Human Intrahepatic Cholangiocarcinoma Subtypes to Chemotherapeutics and Molecular Targeted Agents: A Study on Primary Cell Cultures

782 views | Mar 21 2018

Fraveto A et al. identified a dual PI3-kinase/mTOR inhibitor that both in vitro and in vivo, exerts dramatic antiproliferative effects against both mucin- and mixed-IHCCA. [Read the Full Post]

MST2 phosphorylation at serine 385 in mitosis inhibits its tumor suppressing activity

1132 views | Mar 20 2018

Chen X et al. revealed a novel layer of regulation for MST2 in mitosis and its role in tumorigenesis. [Read the Full Post]

CCND1 mutations increase protein stability and promote ibrutinib resistance in mantle cell lymphoma

1107 views | Mar 20 2018

Mohanty A et al. uncover a new mechanism that is critical for the regulation of CCND1 protein levels, and is directly relevant to primary ibrutinib resistance in MCL. [Read the Full Post]

Oncogenic epithelial cell-derived exosomes containing Rac1 and PAK2 induce angiogenesis in recipient endothelial cells

1026 views | Mar 19 2018

Gopal SK et al. demonstrated for the first time that oncogenic cells undergoing EMT can communicate with endothelial cells via exosomes, and establish exosomal Rac1/PAK2 as angiogenic promoters that may function from early stages of the metastatic cascade. [Read the Full Post]

Nevospheres from neurocutaneous melanocytosis cells show reduced viability when treated with specific inhibitors of NRAS signaling pathway

710 views | Mar 19 2018

Basu D et al. indicated NRAS mutated cells derived from clinical NCM samples are capable of continuous growth as spheroid colonies in vitro and retain their genetic identity. Drugs targeting the NRAS signaling pathway reduce in vitro viability of NCM cells. NCM lesional spheroids represent a new and reliable experimental model of NCM for use in drug testing and mechanistic studies. [Read the Full Post]

Prolactin signaling through focal adhesion complexes is amplified by stiff extracellular matrices in breast cancer cells

1272 views | Mar 18 2018

Barcus CE et al. suggested that PRL signaling to FAK and SFKs may be useful targets in clinical aggressive ERα+ breast carcinomas. [Read the Full Post]

METTL13 is downregulated in bladder carcinoma and suppresses cell proliferation, migration and invasion

0 views | Mar 18 2018

Zhang Z et al. identified METTL13 as a tumor suppressor and might provide promising approaches for bladder cancer treatment and prevention. [Read the Full Post]

Hypoxia-inducible factor 1α (HIF-1α) and reactive oxygen species (ROS) mediates radiation-induced invasiveness through the SDF-1α/CXCR4 pathway in non-small cell lung carcinoma cells

822 views | Mar 17 2018

Gu Q et al. found the underlying mechanisms of the irradiation-enhanced invasiveness of NSCLC cells. [Read the Full Post]

Relative cytotoxic potencies and cell death mechanisms of α1 -adrenoceptor antagonists in prostate cancer cell lines

0 views | Mar 17 2018

Forbes A et al. demonstrated cytotoxic actions on both castration-resistant PC-3 and androgen-sensitive LNCap prostate cancer cells. [Read the Full Post]

X66, a novel N-terminal heat shock protein 90 inhibitor, exerts antitumor effects without induction of heat shock response.

1091 views | Mar 16 2018

Zhao Z et al. found that the HSP90 inhibitory action and the potent antitumor activity, with the anti-HSR action, promise X66 a novel HSP90-targeted agent, which merits further research and development. [Read the Full Post]

Epothilone B induces apoptosis and enhances apoptotic effects of ABT-737 on human cancer cells via PI3K/AKT/mTOR pathway

0 views | Mar 16 2018

Li YL et al. indicated that ABT-737 may be a pertinent sensitizer to epothilone B, and the strategy of combining epothilone B with ABT-737 appears to be an attractive option for overcoming the resistance and neurotoxicity of epothilone B. [Read the Full Post]

NF-YA promotes invasion and angiogenesis by upregulating EZH2-STAT3 signaling in human melanoma cells

1753 views | Mar 15 2018

Xu Z et al. indicated that overexpression of NF-YA contributes to tumor angiogenesis through EZH2-STAT3 signaling in human melanoma cells, highlighting NF-YA as a potential therapeutic target in human melanoma. [Read the Full Post]

Endothelial STAT3 Activation Increases Vascular Leakage Through Downregulating Tight Junction Proteins: Implications for Diabetic Retinopathy

1604 views | Mar 15 2018

Yun JH et al. suggested the potential importance of IL-6/STAT3 signaling in regulating endothelial permeability and provide a therapeutic target to prevent the pathology of diabetic retinopathy. [Read the Full Post]

cAMP signaling increases histone deacetylase 8 expression via the Epac2-Rap1A-Akt pathway in H1299 lung cancer cells

1316 views | Mar 14 2018

Park JY et al. indicated the Epac-Rap1-Akt pathway mediates cAMP signaling-induced inhibition of JNK-dependent HDAC8 degradation, and the resulting HDAC8 increase augments cisplatin-induced apoptosis by repressing TIPRL expression in H1299 lung cancer cells. [Read the Full Post]

Aberrant activation of hedgehog signaling promotes cell proliferation via the transcriptional activation of forkhead Box M1 in colorectal cancer cells

1256 views | Mar 13 2018

Wang D et al. indicated the dysregulation of the Hh-Gli1-FoxM1 axis is essential for the proliferation and growth of human CRC cells and offers a potent target for therapeutic intervention in CRC. [Read the Full Post]

A Novel Antifibrotic Mechanism of Nintedanib and Pirfenidone. Inhibition of Collagen Fibril Assembly

1412 views | Mar 12 2018

Knüppel L et al. indicated both drugs act on important regulatory levels in collagen synthesis and processing. Nintedanib was more effective in down-regulating profibrotic gene expression and collagen secretion. Importantly, both drugs inhibited collagen I fibril formation and caused a reduction in and an altered appearance of collagen fibril bundles, representing a completely novel mechanism of action for both drugs. [Read the Full Post]

Nek2A/SuFu feedback loop regulates Gli-mediated Hedgehog signaling pathway

1194 views | Mar 12 2018

Zhou F et al. uncovered one of the mechanisms by which Nek2A acts as a modulator of the Hh signaling pathway in the context of a novel negative-feedback loop, which may offer new insights into Gli-mediated Hh signaling regulation in development and human diseases. [Read the Full Post]

Osteoclast-Primed Foxp3+ CD8 T Cells Induce T-bet, Eomesodermin, and IFN-γ To Regulate Bone Resorption.

0 views | Mar 11 2018

Shashkova EV et al. demonstrated a novel link between NF-κB signaling and induction of IFN-γ in TcREG and establish an important role for IFN-γ in TcREG-mediated protection from bone loss. [Read the Full Post]

Panobinostat induces apoptosis via production of reactive oxygen species and synergizes with topoisomerase inhibitors in cervical cancer cells

0 views | Mar 10 2018

Wasim L et al. suggest a combination therapy using inhibitors of histone deacetylase and topoisomerase together could hold the promise for an effective targeted therapeutic strategy. [Read the Full Post]