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Blog of Signaling Pathways

JAK-STAT and G-protein-coupled receptor signaling pathways are frequently altered in epitheliotropic intestinal T-cell lymphoma

1630 views | Nov 05 2017

Nairismägi ML et al. showed that inhibitors of both JAK-STAT and MEK-ERK pathways effectively reduced viability of patient-derived primary EITL cells, indicating potential therapeutic strategies for this neoplasm with no effective treatment currently available. [Read the Full Post]

Platelet-derived growth factor BB enhances osteoclast formation and osteoclast precursor cell chemotaxis

1272 views | Nov 05 2017

Li DQ et al. showed that PDGF-BB enhanced RAW264.7 cell migration and gene expression of osteoclastogenic signaling molecules (i.e., nuclear factor of activated T cells 1, dendrocyte-expressed seven transmembrane protein, and B-cell lymphoma 2), and treatment with AG-1295, AG-490, or S3I-201 (a STAT3 inhibitor) reduced this effect. PDGF-BB enhanced osteoclast formation, osteoclast precursor cell chemotaxis, and phosphorylation of STAT3, Akt, and ERK1/2. but AG-1295 and AG-490 reduced this effect. These findings reflect the complexity of PDGF-BB in bone biology. [Read the Full Post]

Regulated intramembrane proteolysis of the AXL receptor kinase generates an intracellular domain that localizes in the nucleus of cancer cells

769 views | Nov 04 2017

Lu Y et al. suggested that AXL can undergo sequential processing mediated by various proteases kept in a homeostatic balance. [Read the Full Post]

Role of protein arginine methyltransferase 5 in inflammation and migration of fibroblast-like synoviocytes in rheumatoid arthritis

546 views | Nov 04 2017

Chen D et al. suggested that targeting PRMT5 to prevent synovial inflammation and destruction might be a promising therapy for RA. [Read the Full Post]

IGF-II-mediated downregulation of peroxisome proliferator-activated receptor-γ coactivator-1α in myoblast cells involves PI3K/Akt/FoxO1 signaling pathway

554 views | Nov 03 2017

Mu X et al. indicated that IGF-II reduces PGC-1α expression in skeletal muscle cells through a mechanism involving PI3K-Akt-FoxO1 but not p38 MAPK or Erk1/2 MAPK pathways. [Read the Full Post]

Hepatocyte growth factor reduces sensitivity to the epidermal growth factor receptor-tyrosine kinase inhibitor, gefitinib, in lung adenocarcinoma cells harboring wild-type EGFR

0 views | Nov 02 2017

Yang H et al. suggested that HGF reduced the gefitinib sensitivity through MET and downstream PI3K and MAPK pathways. [Read the Full Post]

BRCA1-regulated RRM2 expression protects glioblastoma cells from endogenous replication stress and promotes tumorigenicity

769 views | Nov 02 2017

Rasmussen RD et al. proposed that GBM cells are addicted to the RS-protective role of the BRCA1-RRM2 axis, targeting of which may represent a novel paradigm for therapeutic intervention in GBM. [Read the Full Post]

Antitumor effect of FGFR inhibitors on a novel cholangiocarcinoma patient derived xenograft mouse model endogenously expressing an FGFR2-CCDC6 fusion protein

0 views | Nov 01 2017

Wang Y et al. provided a strong rationale for the investigation of FGFR inhibitors, particularly BGJ398, as a therapeutic option for cholangiocarcinoma patients harboring FGFR2 fusions. [Read the Full Post]

Anidulafungin-Induced Suicidal Erythrocyte Death

0 views | Nov 01 2017

Anidulafungin triggers hemolysis and eryptosis with cell shrinkage and phospholipid scrambling of the erythrocyte cell membrane, an effect in part due to Ca2+ entry and activation of p38 kinase. [Read the Full Post]

Inhibition of β-Catenin to Overcome Endocrine Resistance in Tamoxifen-Resistant Breast Cancer Cell Line

0 views | Oct 31 2017

Won HS et al. suggested that beta-catenin plays a role in tamoxifen-resistant breast cancer, and the inhibition of beta-catenin may be a potential target in tamoxifen-resistant breast cancer. [Read the Full Post]

Phosphoinositide 3-Kinase δ Regulates Dectin-2 Signaling and the Generation of Th2 and Th17 Immunity

0 views | Oct 31 2017

Lee MJ, et al. demonstrated that PI3Kδ regulates Dectin-2 signaling and its dendritic cell function. [Read the Full Post]

Coordinate involvement of Nodal-dependent inhibition and Wnt-dependent activation in the maintenance of organizer-specific bmp2b in zebrafish

1036 views | Oct 30 2017

Xue Y et al. suggested that maintenance of organizer-specific bmp2b expression involves opposite and concerted regulation by Nodal and Wnt signaling. [Read the Full Post]

S100B impairs glycolysis via enhanced poly(ADP-ribosyl)ation of glyceraldehyde-3-phosphate dehydrogenase in rodent muscle cells

1127 views | Oct 30 2017

Hosokawa K et al. concluded that S100B as a humoral factor may impair glycolysis in muscle cells independent of insulin action, and the effect may be attributed to the inhibition of GAPDH activity from enhanced poly(ADP-ribosyl)ation of the enzyme. conclude that S100B as a humoral factor may impair glycolysis in muscle cells independent of insulin action, and the effect may be attributed to the inhibition of GAPDH activity from enhanced poly(ADP-ribosyl)ation of the enzyme. [Read the Full Post]

Functional Effects of AKT3 on Aurora Kinase Inhibitor-induced Aneuploidy

0 views | Oct 29 2017

Noguchi K et al. suggested that AKT3 could repress the antiproliferative effects of AURKi, with a novel activity particularly suppressing the aneuploidy induction. [Read the Full Post]

Enhancement of macrophage inflammatory responses by CCL2 is correlated with increased miR-9 expression and downregulation of the ERK1/2 phosphatase Dusp6

617 views | Oct 29 2017

Carson WF 4th et al. indicated that CCL2 supports the classical activation of macrophages, with miR-9 mediated down-regulation of Dusp6 and enhanced ERK-mediated signal transduction possibly mediating this enhanced pro-inflammatory gene expression. [Read the Full Post]

Overcoming Resistance of Cancer Cells to PARP-1 Inhibitors with Three Different Drug Combinations

857 views | Oct 28 2017

Yalon M et al. showed that combination of vorinostat and ABT-888 could potentially prove useful for treatment of cancer with innate resistance to PARPis due to active HRR machinery, while the combination of vorinostat and 6-TG could potentially overcome innate or acquired resistance to PARPis due to secondary or reversal BRCA mutations, to decreased PARP-1 level or to increased expression of multiple drug resistant proteins. [Read the Full Post]

Cancer-associated fibroblasts promote hepatocellular carcinoma metastasis through chemokine-activated hedgehog and TGF-β pathways

996 views | Oct 28 2017

Liu J et al. found that CAF-secreted CCL2, CCL5, CCL7 and CXCL16 promote HCC metastasis through the coordinate activation of Hh and TGF-β pathways in HCC cells. [Read the Full Post]

Disulfiram overcomes bortezomib and cytarabine resistance in Down-syndrome-associated acute myeloid leukemia cells

610 views | Oct 26 2017

Bista R et al. provided evidence that DSF/Cu2+ overcomes Ara-C and BTZ resistance in cell lines from DS-AMKL patients. A novel mutation underlying BTZ resistance was detected that may identify BTZ-resistant patients, who may not benefit from treatment with CFZ or Ara-C, but may be responsive to DSF/Cu2+. Our findings support the clinical development of DSF/Cu2+ as a less toxic efficacious treatment approach in patients with relapsed/refractory DS-AMKL. [Read the Full Post]

MEK inhibitors block growth of lung tumours with mutations in ataxia-telangiectasia mutated

1060 views | Oct 26 2017

Smida M et al. showed that ATM mutational status in lung cancer is a mechanistic biomarker for MEK inhibitor response, which may improve patient stratification and extend the applicability of these drugs beyond RAS and BRAF mutant tumours. [Read the Full Post]

Impairment of Cargo Transportation Caused by gbf1 Mutation Disrupts Vascular Integrity and Causes Hemorrhage in Zebrafish Embryos

972 views | Oct 25 2017

Chen J et al. showed that endothelial endoplasmic reticulum stress and subsequent apoptosis induced by gbf1 deficiency may account for the vascular collapse and hemorrhage. [Read the Full Post]