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Blog of Signaling Pathways

Screening of epidermal growth factor receptor inhibitors in natural products by capillary electrophoresis combined with high performance liquid chromatography-tandem mass spectrometry

92 views | Oct 09 2019

Li F et al. demonstrated a significant merit of our method in the identification of the bioactive compounds in natural products. [Read the Full Post]

Targeting the PI3K/Akt/mTOR-pathway with the pan-Akt inhibitor GDC-0068 in PIK3CA-mutant breast cancer brain metastases

51 views | Oct 08 2019

Ippen FM et al. suggested that the Akt-inhibitor GDC-0068 may be an encouraging targeted treatment strategy for breast cancer brain metastasis patients with activating mutations in the PI3K pathway. These data provide a rationale to further evaluate the efficacy of GDC-0068 in patients with brain metastases. [Read the Full Post]

Multicellular gene network analysis identifies a macrophage-related gene signature predictive of therapeutic response and prognosis of gliomas

32 views | Oct 08 2019

Sun X et al. identified macrophage-related gene signature has good prognostic value for predicting resistance to targeted therapeutics and survival of glioma patients, implying that combining current targeted therapies with new macrophage-targeted therapy may be beneficial for the long-term treatment outcomes of glioma patients. [Read the Full Post]

Abiraterone Acetate and Enzalutamide: Similar Efficacy in Treating Post Docetaxel Metastatic Castration-resistant Prostate Cancer: Single Center Experience

35 views | Oct 07 2019

Chang LW et al. found that AA and ENZ had a similar efficacy in treating post-docetaxel mCRPC patients. Metastatic volume and nadir PSA were independent risk factors of these patients in predicting their disease-specific survival and overall survival. [Read the Full Post]

Recent developments in the treatment of blastic plasmacytoid dendritic cell neoplasm

40 views | Oct 06 2019

Future directions in therapy approaches for patients with BPDCN will include the development of other CD123-targeted agents, agents targeting beyond CD123 and investigation of rational combination approaches of CD123-directed therapy with other therapies. [Read the Full Post]

Elevating SOX2 in prostate tumor cells upregulates expression of neuroendocrine genes, but does not reduce the inhibitory effects of enzalutamide

34 views | Oct 06 2019

Metz EP et al. indicated that NE marker expression can increase independently of the sensitivity to enzalutamide. [Read the Full Post]

BIBW2992, an irreversible EGFR/HER2 inhibitor highly effective in preclinical lung cancer models

143 views | Oct 05 2019

Li D et al. showed that BIBW2992, an anilino-quinazoline designed to irreversibly bind EGFR and HER2, potently suppresses the kinase activity of wild-type and activated EGFR and HER2 mutants, including erlotinib-resistant isoforms. Consistent with this activity, BIBW2992 suppresses transformation in isogenic cell-based assays, inhibits survival of cancer cell lines and induces tumor regression in xenograft and transgenic lung cancer models, with superior activity over erlotinib. These findings encourage further testing of BIBW2992 in lung cancer patients harboring EGFR or HER2 oncogenes. [Read the Full Post]

FK228 augmented temozolomide sensitivity in human glioma cells by blocking PI3K/AKT/mTOR signal pathways

132 views | Oct 05 2019

Wu Y et al. suggested that FK228 augmented temozolomide sensitivity in human glioma cells partially by blocking PI3K/AKT/mTOR signal pathways. It thus may provide a promising target for improving the therapeutic outcome of TMZ-resistant gliomas, although further studies will be needed. [Read the Full Post]

AZD6738, A Novel Oral Inhibitor of ATR, Induces Synthetic Lethality with ATM Deficiency in Gastric Cancer Cells

99 views | Oct 04 2019

Min A et al. suggested synthetic lethality between ATR inhibition and ATM deficiency in gastric cancer cells. Further clinical studies on the interaction between AZD 6738 and ATM deficiency are warranted to develop novel treatment strategies for gastric cancer. [Read the Full Post]

LncRNA FER1L4 induces apoptosis and suppresses EMT and the activation of PI3K/AKT pathway in osteosarcoma cells via inhibiting miR-18a-5p to promote SOCS5

43 views | Oct 03 2019

Ye F et al. indicated thatthe overexpression of FER1L4 promoted apoptosis and inhibited the EMT markers expression and PI3K/AKT signaling pathway activation in OS cells via downregulating miR-18a-5p to promote SOCS5. [Read the Full Post]

Ipatasertib plus paclitaxel versus placebo plus paclitaxel as first-line therapy for metastatic triple-negative breast cancer (LOTUS): a multicentre, randomised, double-blind, placebo-controlled, phase 2 trial

87 views | Oct 03 2019

Kim SB et al. supported AKT-targeted therapy for triple-negative breast cancer. Ipatasertib warrants further investigation for the treatment of triple-negative breast cancer. [Read the Full Post]

On the Mechanism of Cytoprotection by Ferrostatin-1 and Liproxstatin-1 and the Role of Lipid Peroxidation in Ferroptotic Cell Death

0 views | Oct 02 2019

Zilka O et al. demonstrated that potent RTAs subvert ferroptosis and suggest that lipid peroxidation (autoxidation) may play a central role in the process. [Read the Full Post]

Influence of Wilms' tumor suppressor gene WT1 on bovine Sertoli cells polarity and tight junctions via non-canonical WNT signaling pathway

74 views | Oct 01 2019

Wang X et al. indicated that WT1 mediates the regulation of several proteins involved in bovine SCs polarity maintenance and intercellular tight junctions (TJ) by non-canonical WNT signaling pathway. [Read the Full Post]

Inhibition of Suicidal Erythrocyte Death by Volasertib

0 views | Sep 30 2019

Al Mamun Bhuyan A et al. showed that Volasertib is a novel inhibitor of erythrocyte cell membrane scrambling following energy depletion and hyperosmotic shock, effects contrasting the stimulation of K562 cell apoptosis. [Read the Full Post]

BI 6727, a Polo-like kinase inhibitor with improved pharmacokinetic profile and broad antitumor activity

0 views | Sep 30 2019

Rudolph D et al. indicated these findings warrant further investigation of BI 6727 as a tailored antimitotic agent; clinical studies have been initiated. [Read the Full Post]

Discovery of OSI-906: a selective and orally efficacious dual inhibitor of the IGF-1 receptor and insulin receptor

67 views | Sep 29 2019

Mulvihill MJ et al. showed that OSI-906 is a novel, potent, selective and orally bioavailable dual IGF-1R/IR kinase inhibitor with favorable preclinical drug-like properties, which has demonstrated in vivo efficacy in tumor models and is currently in clinical testing. [Read the Full Post]

Some gating potentiators, including VX-770, diminish ΔF508-CFTR functional expression

90 views | Sep 29 2019

Veit G et al. indicated that VX-770 diminished the folding efficiency and the metabolic stability of ΔF508-CFTR at the endoplasmic reticulum (ER) and post-ER compartments, respectively, causing reduced cell surface ΔF508-CFTR density and function. VX-770-induced destabilization of ΔF508-CFTR was influenced by second-site suppressor mutations of the folding defect and was prevented by stabilization of the nucleotide-binding domain 1 (NBD1)-NBD2 interface. The reduced correction efficiency of ΔF508-CFTR, as well as of two other processing mutations in the presence of VX-770, suggests the need for further optimization of potentiators to maximize the clinical benefit of corrector-potentiator combination therapy in CF. [Read the Full Post]

Pharmacokinetics and Biodistribution of GDC-0449 Loaded Micelles in Normal and Liver Fibrotic Mice

67 views | Sep 26 2019

Dutta R et al. showed that M6P-conjugated GDC-0449 loaded mixed micelles may be used as a potential drug delivery vehicle for treating liver fibrosis. [Read the Full Post]

Overcoming Linsitinib intrinsic resistance through inhibition of nuclear factor-κB signaling in esophageal squamous cell carcinoma

103 views | Sep 26 2019

Wu J et al. demonstrated that the intrinsic resistance to Linsitinib was predominantly mediated by NF-κB activation in ESCC. Moreover, combination of Linsitinib and JSH-23 as therapy provides a novel strategy to overcome resistance to Linsitinib in ESCC. [Read the Full Post]

Phase 1 trial of carfilzomib (PR-171) in combination with vorinostat (SAHA) in patients with relapsed or refractory B-cell lymphomas

71 views | Sep 25 2019

Holkova B et al. showed a decrease in NF-κB activation and an increase in Bim levels in some patients, but these changes did not correlate with clinical response. [Read the Full Post]