Blog of Signaling Pathways

Differential expression of cyclooxygenase-2 in metastatic melanoma affects progression free survival

1636 views | Nov 13 2017

Panza E et al. suggested that COX-2 expression may become an useful diagnostic tool in defining melanoma malignancy as well as argue for a possible therapeutic use of NSAID as add on therapy in selected cases. [Read the Full Post]

COX-2 expression positively correlates with PD-L1 expression in human melanoma cells

1579 views | Nov 13 2017

Botti G et al. showed that COX-2 expression correlates with and modulates PD-L1 expression in melanoma cells. These findings have clinical relevance since they provide a rationale to implement novel clinical trials to test COX-2 inhibition as a potential treatment to prevent melanoma progression and immune evasion as well as to enhance the anti-tumor activity of PD-1/PD-L1 based immunotherapy for the treatment of melanoma patients with or without BRAF/NRAS mutations. [Read the Full Post]

Retinoic acid promotes expression of germline-specific genes in chicken blastoderm cells by stimulating Smad1/5 phosphorylation in a feeder-free culture system

946 views | Nov 12 2017

Tang X et al. demonstrated that E8 medium is able to maintain cBC growth for weeks and RA treatment induced germ cell differentiation of cBCs through the BMP-Smad1/5 signaling pathway. [Read the Full Post]

Inflammatory CXCL12-CXCR4/CXCR7 axis mediates G-protein signaling pathway to influence the invasion and migration of nasopharyngeal carcinoma cells

0 views | Nov 12 2017

Qiao N et al. provided key evidence for NPC aetiology which can be further investigated to develop novel molecular targets for NPC treatments. [Read the Full Post]

Novel Allosteric Pathway of Eg5 Regulation Identified through Multivariate Statistical Analysis of Hydrogen-Exchange Mass Spectrometry (HX-MS) Ligand Screening Data

1074 views | Nov 11 2017

Sheff JG et al. suggested that a different approach to inhibitor development may be fruitful. [Read the Full Post]

Icaritin activates JNK-dependent mPTP necrosis pathway in colorectal cancer cells

1431 views | Nov 11 2017

Zhou C et al. showed that ICT exerts potent inhibitory effect against CRC cells in vitro and in vivo. [Read the Full Post]

Sphingosine kinase inhibition ameliorates chronic hypoperfusion-induced white matter lesions

927 views | Nov 10 2017

Yang Y et al. suggested a mechanism for hypoperfusion-associated WML involving HIF-1α-SphK2-S1P-mediated disruption of OPC differentiation, and proposes the SphK signaling pathway as a potential therapeutic target for white matter disease. [Read the Full Post]

The platelet-derived growth factor receptor/STAT3 signaling pathway regulates the phenotypic transition of corpus cavernosum smooth muscle in rats

1175 views | Nov 09 2017

Yan JF et al. indicated that through activation of the PDGFR/STAT3 signaling pathway, PDGF promoted the synthetic phenotype transition; thus, regulation of this pathway might contribute to ED therapy. [Read the Full Post]

Spleen Tyrosine Kinase Mediates EGFR Signaling to Regulate Keratinocyte Terminal Differentiation

1406 views | Nov 09 2017

Wu NL et al. unraveled the role of Syk in EGFR-mediated signaling and reveals regulatory roles of Syk in keratinocyte differentiation, suggesting the clinical potential of topical or systemic Syk inhibitors in the treatment of skin diseases with aberrant differentiation. [Read the Full Post]

Synergistic effects of selective inhibitors targeting the PI3K/AKT/mTOR pathway or NUP214-ABL1 fusion protein in human Acute Lymphoblastic Leukemia

0 views | Nov 08 2017

Simioni C et al. indicated that co-targeting NUP214-ABL1 fusion gene and PI3K/Akt/mTOR signaling pathway could represent a new and effective pharmacological strategy to improve the outcome in NUP214-ABL1 positive T-ALL. [Read the Full Post]

Molecular mechanism of G1 arrest and cellular senescence induced by LEE011, a novel CDK4/CDK6 inhibitor, in leukemia cells

814 views | Nov 08 2017

Tao YF et al. demonstrated for the first time that LEE011 treatment results in inhibition of cell proliferation and induction of G1 arrest and cellular senescence in leukemia cells. LncRNA microarray analysis showed differentially expressed mRNAs and lncRNAs in LEE011-treated HL-60 cells and we demonstrated that LEE011 induces cellular senescence partially through downregulation of the expression of MYBL2. These results may open new lines of investigation regarding the molecular mechanism of LEE011 induced cellular senescence. [Read the Full Post]

Mutations of the LIM protein AJUBA mediate sensitivity of head and neck squamous cell carcinoma to treatment with cell-cycle inhibitors

896 views | Nov 07 2017

Zhang M et al. identified AJUBA, SMAD4 and RAS mutations as potential candidate biomarkers of response of HNSCC to treatment with these mitotic inhibitors. [Read the Full Post]

Quantitative proteomics of breast tumors: Tissue quality assessment to clinical biomarkers

1991 views | Nov 06 2017

Chen Y, et al. showed that combined with biomarkers for tissue quality and histological content are implemented in a three-tier multiplexed assay platform, which is translated from cell line models into frozen tumor tissues banked from breast cancer patients. [Read the Full Post]

Checkpoint kinase inhibitor AZD7762 strongly sensitises urothelial carcinoma cells to gemcitabine

0 views | Nov 06 2017

Isono M et al. showed that AZD7762 enhanced sensitivity of urothelial carcinoma cells to gemcitabine by inhibiting DNA repair and disturbing checkpoints. Combining gemcitabine with CHK1 inhibition holds promise for urothelial cancer therapy. [Read the Full Post]

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

2189 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

1789 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

1020 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

881 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

814 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

1 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]