Blog of Signaling Pathways

Nesfatin-1 protects dopaminergic neurons against MPP+/MPTP-induced neurotoxicity through the C-Raf-ERK1/2-dependent anti-apoptotic pathway

0 views | Jul 02 2018

Shen XL et al. suggested that C-Raf-ERK1/2, which is involved in an anti-apoptotic pathway, is responsible for the neuroprotective effects of nesfatin-1 in the context of MPTP-induced toxicity. These results imply that nesfatin-1 might have therapeutic potential for PD. [Read the Full Post]

Transcription of HOTAIR is regulated by RhoC-MRTF-A-SRF signaling pathway in human breast cancer cells

837 views | Jul 02 2018

He H et al. suggested that HOTAIR is regulated by the RhoC-MRTF-A-SRF signaling pathway in breast cancer cells. [Read the Full Post]

Genome-Wide Gene Expression Analysis Identifies the Proto-oncogene Tyrosine-Protein Kinase Src as a Crucial Virulence Determinant of Infectious Laryngotracheitis Virus in Chicken Cells

853 views | Jul 01 2018

Li H et al. indicated that the results from our study advance our understanding of host-ILTV interactions on a molecular level and provide experimental evidence that it is possible to control ILT via the manipulation of host-virus interactions. [Read the Full Post]

miR-7 reverses the resistance to BRAFi in melanoma by targeting EGFR/IGF-1R/CRAF and inhibiting the MAPK and PI3K/AKT signaling pathways

697 views | Jul 01 2018

Sun X et al. demonstrated that miR-7 could reverse the resistance to BRAF inhibitors in certain vemurafenib resistant melanoma cell lines. It could advance the field and provide the basis for further studies in BRAF inhibitor resistance in melanoma. [Read the Full Post]

Targeting Suppressive Myeloid Cells Potentiates Checkpoint Inhibitors to Control Spontaneous Neuroblastoma

0 views | Jun 30 2018

Mao Y et al. demonstrated the essential role of CSF-1R signaling during the induction of suppressive myeloid cells and emphasize its clinical potential as an immunotherapy for human cancers. [Read the Full Post]

Small molecule epigenetic screen identifies novel EZH2 and HDAC inhibitors that target glioblastoma brain tumor-initiating cells

650 views | Jun 30 2018

Grinshtein N et al. identified key epigenetic modulators in GBM that regulate BTIC growth and survival and highlight promising combination therapies. [Read the Full Post]

Pharmacological inhibition of NOX4 ameliorates alcohol-induced liver injury in mice through improving oxidative stress and mitochondrial function

788 views | Jun 29 2018

Sun Q et al. found that pharmacological inhibition of NOX4 activity protects against alcohol-induced fat accumulation and activation of intrinsic apoptosis via improving mitochondrial function. [Read the Full Post]

FcγRIIB mediates antigen-independent inhibition on human B lymphocytes through Btk and p38 MAPK

997 views | Jun 29 2018

Tzeng SJ et al. found the importance of antigen-independent inhibition by FcγRIIB in the prevention from antibody-mediated autoimmune diseases and in the regulation of B cell homeostasis. [Read the Full Post]

Therapeutic effects of histone deacetylase inhibitors in a murine asthma model

1245 views | Jun 28 2018

Ren Y, et al. suggested that treatment with HDAC inhibitors can reduce airway inflammation, airway remodeling, and airway hyperresponsiveness in chronic allergic airway disease in mice. [Read the Full Post]

LTR12 promoter activation in a broad range of human tumor cells by HDAC inhibition

1312 views | Jun 28 2018

Krönung SK et al. showed that inhibition of HDAC1-3 is sufficient for LTR12 activation. Importantly, HDAC inhibitors induce LTR12 activity not only in testicular cancer cells, but also in cells derived from many additional tumor species. Finally, we characterize the transcription factor NF-Y as a mediator of LTR12 promoter activity and HDAC inhibitor-induced apoptosis, in the context of widespread genomic binding of NF-Y to specific LTR12 sequences. Thus, HDAC inhibitor-driven LTR12 activation represents a generally applicable means to induce proapoptotic genes in human cancer cells. [Read the Full Post]

Identification of approved and investigational drugs that inhibit hypoxia-inducible factor-1 signaling

1417 views | Jun 27 2018

Hsu CW et al. underline the importance of developing a battery of robust assay platforms and confirmation studies that focus on endogenous protein targets so that only relevant and reliable data will be taken into pre-clinical and clinical studies. [Read the Full Post]

HDAC5, a potential therapeutic target and prognostic biomarker, promotes proliferation, invasion and migration in human breast cancer

1319 views | Jun 27 2018

Li A et al. indicated that HDAC5 is a promising prognostic marker and drug target for BC and that the combination of LMK-235 and bortezomib presents a novel therapeutic strategy for BC. [Read the Full Post]

HPOB, an HDAC6 inhibitor, attenuates corticosterone-induced injury in rat adrenal pheochromocytoma PC12 cells by inhibiting mitochondrial GR translocation and the intrinsic apoptosis pathway

1107 views | Jun 26 2018

Li ZY et al. suggested that the anti-apoptotic activity of HDAC6 inhibition against the mitochondria-mediated impairment pathway might be mechanistically linked to the hyperacetylation of Hsps and consequent suppression of GR translocation to the mitochondria. [Read the Full Post]

Investigation of MTH1 activity via mismatch-based DNA chain elongation

822 views | Jun 26 2018

As the method is designed directly towards the cellular function of MTH1, activity of MTH1 in different breast cancer cell lines has been detected, implying the potential application of this assay method for biomedical research and clinical diagnose in the future. [Read the Full Post]

Inhibition of local estrogen synthesis in the hippocampus impairs hippocampal memory consolidation in ovariectomized female mice

0 views | Jun 25 2018

Tuscher JJ et al. examined the role of hippocampal E2 synthesis in hippocampal memory consolidation. Using bilateral dorsal hippocampal infusions of the aromatase inhibitor letrozole, we first found that blockade of dorsal hippocampal E2 synthesis impaired hippocampal memory consolidation. We next found that elevated levels of E2 in the dorsal hippocampus observed 30min after object training were blocked by dorsal hippocampal infusion of letrozole, suggesting that behavioral experience increases acute and local E2 synthesis. Finally, aromatase inhibition did not prevent exogenous E2 from enhancing hippocampal memory consolidation, indicating that hippocampal E2 synthesis is not necessary for exogenous E2 to enhance hippocampal memory. Combined, these data are consistent with the hypothesis that hippocampally-synthesized E2 is necessary for hippocampus-dependent memory consolidation in rodents. [Read the Full Post]

Adenovirus-mediated TIPE2 overexpression inhibits gastric cancer metastasis via reversal of epithelial-mesenchymal transition

1199 views | Jun 25 2018

Yin H et al. provided the first evidence that TIPE2 inhibits gastric cancer cell migration, invasion and metastasis very probably via reversal of EMT, revealing that TIPE2 may be a novel therapeutic target for human gastric cancer EMT and metastasis. [Read the Full Post]

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

808 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

975 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

814 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

1480 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]