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Blog of Signaling Pathways

Blocking EZH2 methylation transferase activity by GSK126 decreases stem cell-like myeloma cells

0 views | Aug 27 2019

Zeng D et al. suggested that EZH2 inactivation by GSK126 is effective in killing MM cells and CSCs as a single agent or in combination with bortezomib. Clinical trial of GSK126in patients with MM may be warranted. [Read the Full Post]

The BACE1 inhibitor verubecestat (MK-8931) reduces CNS β-amyloid in animal models and in Alzheimer's disease patients

75 views | Aug 27 2019

Kennedy ME indicated the human data were fit to an amyloid pathway model that provided insight into the Aβ pools affected by BACE1 inhibition and guided the choice of doses for subsequent clinical trials. [Read the Full Post]

Treatment of γ-Hydroxybutyric Acid and γ-Butyrolactone Overdose with Two Potent Monocarboxylate Transporter 1 Inhibitors, AZD3965 and AR-C155858

57 views | Aug 26 2019

Follman KE et al. indicated that inhibition of MCT1 is an effective treatment of GHB/GBL overdose. [Read the Full Post]

Effects of EF-24, RAD001, and paclitaxel on the expression profiles of apoptotic and anti-apoptotic genes

0 views | Aug 26 2019

Alp E et al. showed that response of these cells to paclitaxel, EF-24, and RAD001 was found different at the transcriptional level of apoptotic and antiapoptotic genes. Therefore, understanding transcriptional changes after these drug exposure may give us a change to figure out more realistic results of the apoptotic pathway inhibition. [Read the Full Post]

Metformin and 4SC-202 synergistically promote intrinsic cell apoptosis by accelerating ΔNp63 ubiquitination and degradation in oral squamous cell carcinoma

164 views | Aug 25 2019

He Y et al. revealed that ΔNp63 mediated anticancer effects of metformin and 4SC-202, as overexpression or suppression of ΔNp63 could attenuate or facilitate the apoptosis rate of OSCC under metformin or/and 4SC-202 treatment. Collectively, metformin and 4SC-202 synergistically promote intrinsic apoptosis through accelerating ubiquitin-mediated degradation of ΔNp63 in OSCC, and this co-treatment can serve as a potential therapeutic scheme for OSCC. [Read the Full Post]

Proteasome inhibitor PS-341 limits macrophage necroptosis by promoting cIAPs-mediated inhibition of RIP1 and RIP3 activation

56 views | Aug 25 2019

Zhang Y et al. identified a new role of PS-341 in the cell death of BMDMs and provided a novel insight into the atherosclerotic inflammation caused by proteasome-mediated macrophage necroptosis. [Read the Full Post]

Inhibition of glioblastoma dispersal by the MEK inhibitor PD0325901

41 views | Aug 21 2019

Shannon S et al. showed that PD0325901 significantly increases aggregate cohesion, stiffness, and viscosity but only when tumor cells have access to high concentrations of fibronectin. Treatment also results in reorganization of actin from cortical into stress fibers, in both 2D and 3D culture. Moreover, drug treatment localized pFAK at sites of cell-substratum adhesion. Collectively, these changes resulted in increased strength of substrate attachment and decreased motility, a decrease in aggregate dispersal velocity, and in a marked decrease in growth rate of both 2D and 3D cultures. [Read the Full Post]

Alisertib demonstrates significant antitumor activity in bevacizumab resistant, patient derived orthotopic models of glioblastoma

61 views | Aug 20 2019

Kurokawa C et al. showed that alisertibdisplays significant antitumor activity against primary GBM lines and xenografts, including patient derived GBM lines resistant to bevacizumab; these data support clinical translation in GBM. [Read the Full Post]

Selective BCL-XL inhibition promotes apoptosis in combination with MLN8237 in medulloblastoma and pediatric glioblastoma cells

62 views | Aug 20 2019

Levesley J et al. indicated that selective small-molecule inhibitors of BCL-XL may enhance the efficacy of MLN8237 and other targeted chemotherapeutic agents. [Read the Full Post]

Allosteric inhibition of SHP2 phosphatase inhibits cancers driven by receptor tyrosine kinases

0 views | Aug 19 2019

Chen YN et al. demonstrated that pharmacological inhibition of SHP2 is a valid therapeutic approach for the treatment of cancers. [Read the Full Post]

Selective inhibition of EZH2 by EPZ-6438 leads to potent antitumor activity in EZH2-mutant non-Hodgkin lymphoma

57 views | Aug 19 2019

Knutson SK et al. indicated these data confirm the dependency of EZH2-mutant NHL on EZH2 activity and portend the utility of EPZ-6438 as a potential treatment for these genetically defined cancers. [Read the Full Post]

Notch signaling pathway is a potential therapeutic target for extracranial vascular malformations

94 views | Aug 18 2019

Davis RB et al. showed that two gamma secretase inhibitors (GSIs), DAPT (GSI-IX) and RO4929097, cause dose-dependent inhibition of Notch target gene expression (Hey1) and rate of migration of monolayer cultures of lymphatic endothelial cells (hLECs) and blood endothelial cells (HUVEC). GSIs also inhibit HUVEC network formation. hLECs are more sensitive to GSIs compared to HUVEC. GSIs have been found to be safe in clinical trials in patients with Alzheimer's disease or cancer. Our results provide further rationale to support testing of Notch inhibitors in patients with extracranial vascular malformations. [Read the Full Post]

Alkylation of Staurosporine to Derive a Kinase Probe for Fluorescence Applications

60 views | Aug 18 2019

Disney AJ et al. reported that this fluorescein-staurosporine conjugate binds to cAMP-dependent protein kinase in the nanomolar range. Furthermore, its binding can be antagonised with unmodified staurosporine as well as ATP, indicating it targets the ATP binding site in a similar fashion to native staurosporine. This reagent has potential application as a screening tool for protein kinases of interest. [Read the Full Post]

PARP1 Inhibition Radiosensitizes Models of Inflammatory Breast Cancer to Ionizing Radiation

77 views | Aug 17 2019

Michmerhuizen AR et al. demonstrated that PARPi improves the effectiveness of radiotherapy in IBC models and provides the preclinical rationale for the opening phase II randomized trial of RT +/- PARPi in women with IBC [Read the Full Post]

Combined Strategies with Poly (ADP-Ribose) Polymerase (PARP) Inhibitors for the Treatment of Ovarian Cancer: A Literature Review.

67 views | Aug 17 2019

Boussios S et al. discussed multiple clinical trials that are underway examining the antitumor activity of such combination strategies. [Read the Full Post]

Clinical relevance of ticagrelor monotherapy following 1-month dual antiplatelet therapy after bifurcation percutaneous coronary intervention: Insight from GLOBAL LEADERS trial

85 views | Aug 16 2019

Kogame N et al. found that after PCI for bifurcation lesions using 1-month of DAPT followed by ticagrelor monotherapy for 23 months did not demonstrate explicit benefit regarding all-cause death or new Q-wave MI as in the overall trial. [Read the Full Post]

Brief Report: Rapid Acquisition of Alectinib Resistance in ALK-positive Lung Cancer with High Tumor Mutation Burden

69 views | Aug 16 2019

Makimoto G et al. found that high TMB and heterogeneous tumor evolution might be responsible for rapid acquisition of alectinib resistance. [Read the Full Post]

Gefitinib Versus Gefitinib Plus Pemetrexed and Carboplatin Chemotherapy in EGFR-Mutated Lung Cancer

79 views | Aug 15 2019

Noronha V et al. found that adding pemetrexed and carboplatin chemotherapy to gefitinib significantly prolonged PFS and OS but increased toxicity in patients with NSCLC. [Read the Full Post]

Yiqi Chutan Tang Reduces Gefitinib-Induced Drug Resistance in Non-Small-Cell Lung Cancer by Targeting Apoptosis and Autophagy

74 views | Aug 15 2019

Zhang J et al. provided a new treatment strategy for patients with EGFR-TKI resistance in NSCLC. [Read the Full Post]

Use of Antiplatelet Therapy/DAPT for Post-PCI Patients Undergoing Noncardiac Surgery

88 views | Aug 14 2019

Banerjee S et al. present3 commonly encountered clinical scenarios that lead into an evidence-based discussion of practical strategies for managing perioperative antiplatelet therapy in patients following percutaneous coronary intervention. [Read the Full Post]