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Blog of Signaling Pathways

Estrogen promotes the brain metastatic colonization of triple negative breast cancer cells via an astrocyte-mediated paracrine mechanism

360 views | Jun 24 2018

Sartorius CA et al. provided a novel mechanism by which estrogens, acting through ER+ astrocytes in the brain microenvironment, can promote BM of TN breast cancers, and suggests existing endocrine agents may provide some clinical benefit towards reducing and managing BM. [Read the Full Post]

Letrozole-induced functional changes in carcinoma-associated fibroblasts and their influence on breast cancer cell biology

405 views | Jun 24 2018

Li K et al. revealed that down-regulation of several secreted factors (CCL2, CCL5, CXCL1 etc.) in CAFs might be partially responsible for the efficacy of letrozole. [Read the Full Post]

Targeting the gyrase of Plasmodium falciparum with topoisomerase poisons

389 views | Jun 23 2018

Tang Girdwood SC et al. highlighted the utility of the new methods and of fluoroquinolones as a tool for studying the in situ workings of gyrase and its plDNA substrate. [Read the Full Post]

Acetylation of p53 Protein at Lysine 120 Up-regulates Apaf-1 Protein-and-Sensitizes-the-Mitochondrial-Apoptotic-Pathway

706 views | Jun 23 2018

Yun T et al. found that histone deacetylase (HDAC) inhibitors, including butyrate, augment Lys-120 acetylation of p53 and thus Apaf-1 expression by inhibiting HDAC1. [Read the Full Post]

Ionizing Radiation Induces Altered Neuronal Differentiation by mGluR1 through PI3K-STAT3 Signaling in C17.2 Mouse Neural Stem-Like Cells

302 views | Jun 22 2018

Eom HS et al. suggested that the IR-induced altered neuronal differentiation may play a role in the brain dysfunction caused by IR. [Read the Full Post]

A cell-autonomous tumour suppressor role of RAF1 in hepatocarcinogenesis

396 views | Jun 22 2018

Jeric I et al. indicated the contribution of the cellular/tissue environment in determining the function of a protein, and underscores the importance of understanding the molecular context of a disease to inform therapy design. [Read the Full Post]

Identification of cytotoxic agents disrupting synovial sarcoma oncoprotein interactions by proximity ligation assay

0 views | Jun 21 2018

Laporte AN et al. reported use of the proximity ligation assay to confirm the oncogenic association of SS18-SSX with its co-factor TLE1 in multiple human synovial sarcoma cell lines and in surgically-excised human tumor tissue. SS18-SSX/TLE1 interactions are disrupted by class I HDAC inhibitors and novel small molecule inhibitors. This assay can be applied in a high-throughput format for drug discovery in fusion-oncoprotein associated cancers where key effector partners are known. [Read the Full Post]

Registered report: RAF inhibitors prime wild-type RAF to activate the MAPK pathway and enhance growth

305 views | Jun 21 2018

Bhargava A et al. indicated that cancer Biology is a collaboration between the Center for Open Science and Science Exchange, and the results of the replications will be published by eLife. [Read the Full Post]

Loss of ARID1A expression leads to sensitivity to ROS-inducing agent elesclomol in gynecologic cancer cells

536 views | Jun 20 2018

Kwan SY et al. demonstrated for the first time that loss of ARID1A leads to accumulation of ROS and suggest that elesclomol may be used to target ARID1A-mutant gynecologic cancer cells. [Read the Full Post]

AT13148, a first-in-class multi-AGC kinase inhibitor, potently inhibits gastric cancer cells both in vitro and in vivo

1956 views | Jun 20 2018

Xi Y et al. supported the progression of this molecule into future evaluation as a valuable anti-gastric cancer candidate. [Read the Full Post]

CDK1 Is a Synthetic Lethal Target for KRAS Mutant Tumours

0 views | Jun 19 2018

Costa-Cabral S et al. suggested that the KRAS/CDK1 interaction is a robust synthetic lethal effect worthy of further investigation. [Read the Full Post]

Inhibiting GLUT-1 expression and PI3K/Akt signaling using apigenin improves the radiosensitivity of laryngeal carcinoma in vivo

363 views | Jun 19 2018

Bao YY et al. suggested that the effects of apigenin on inhibiting xenograft growth and enhancing xenograft radiosensitivity may be associated with suppressing the expression of GLUT-1 via the PI3K/Akt pathway. In addition, apigenin may enhance the effects of GLUT-1 AS-ODNs via the same mechanism. [Read the Full Post]

Inhibition of deubiquitinases primes glioblastoma cells to apoptosis in vitro and in vivo

878 views | Jun 18 2018

Karpel-Massler G et al. suggested that targeting deubiquitinases for glioma therapy is feasible and effective. [Read the Full Post]

The Deubiquitinase USP9X Maintains DNA Replication Fork Stability and DNA Damage Checkpoint Responses by Regulating CLASPIN during S-Phase

974 views | Jun 18 2018

McGarry E et al. revealed a novel role for USP9X in the maintenance of genomic stability during DNA replication and provide potential mechanistic insights into its tumor suppressor role in certain malignancies. [Read the Full Post]

Both genetic deletion and pharmacological blockade of lysophosphatidic acid LPA1 receptor results in increased alcohol consumption

333 views | Jun 17 2018

Castilla-Ortega E et al. suggested a relevant role for the LPA/LPA1 signaling system in alcoholism. In addition, the LPA1-null mice emerge as a new model for genetic vulnerability to excessive alcohol drinking. The pharmacological manipulation of LPA1 receptor arises as a new target for the study and treatment of alcoholism. [Read the Full Post]

Lysophosphatidic acid upregulates connective tissue growth factor expression in osteoblasts through the GPCR/PKC and PKA pathways

441 views | Jun 17 2018

Yu ZL et al. indicated that LPA increases CCN2 expression through the activation of PKC and PKA. Thus, the regulatory functions of the PKC and PKA pathways are implicated in the LPA-induced increase in CCN2 expression. [Read the Full Post]

HDAC6-mediated EGFR stabilization and activation restrict cell response to sorafenib in non-small cell lung cancer cells

642 views | Jun 15 2018

Wang Z et al. explained the failure of Phase III trial of sorafenib in improving overall survival of advanced NSCLC patients and bear possible implications for the improvement on the efficacy of sorafenib in treatment of NSCLC. [Read the Full Post]

PTBP1 modulation of MCL1 expression regulates cellular apoptosis induced by antitubulin chemotherapeutics.

154 views | Jun 14 2018

Cui J et al. suggested that PTBP1 is a novel regulator of MCL1 mRNA by which it controls apoptotic response to antitubulin chemotherapeutics. [Read the Full Post]

Everolimus enhances cellular cytotoxicity of lapatinib via the eukaryotic elongation factor-2 kinase pathway in nasopharyngeal carcinoma cells

330 views | Jun 14 2018

Liu L et al. revealed that everolimus can sensitize NPC cells to lapatinib by the activation of eEF-2 kinase and provides a potential model of combination therapy. [Read the Full Post]

BIM mediates synergistic killing of B-cell acute lymphoblastic leukemia cells by BCL-2 and MEK inhibitors

471 views | Jun 13 2018

Korfi K et al. observed in B-ALL cells driven by a range of genetic abnormalities and therefore has significant therapeutic potential. [Read the Full Post]