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Source: Biochimica et Biophysica Acta (BBA) Molecular Cell Research
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Total 33 results found since Jan 2013.
Roles of Id1/HIF-1 and CDK5/HIF-1 in cell cycle reentry induced by amyloid-beta peptide in post-mitotic cortical neuron
Publication date: Available online 26 December 2019Source: Biochimica et Biophysica Acta (BBA) - Molecular Cell ResearchAuthor(s): A-Ching Chao, Chien-Hui Chen, Ming-Hsuan Wu, Bo-Yu Hou, Ding-I YangAbstractOne neurotoxic mechanism of amyloid-beta peptide (Aβ), the major component of senile plaques in the brains of Alzheimer's disease (AD) patients, is to trigger cell cycle reentry in fully differentiated neurons. However, the detailed underlying mechanisms remain unclear. Using Aβ25-35–treated primary rat cortical neurons as the experimental system, in the present study we tested whether Aβ-induced inhibitor of differ...
Source: Biochimica et Biophysica Acta (BBA) Molecular Cell Research - December 26, 2019 Category: Molecular Biology Source Type: research
Neuropeptide bombesin receptor activation stimulates growth of lung cancer cells through HER3 with a MAPK-dependent mechanism
Publication date: Available online 17 December 2019Source: Biochimica et Biophysica Acta (BBA) - Molecular Cell ResearchAuthor(s): Lingaku Lee, Irene Ramos-Alvarez, Terry W. Moody, Samuel A. Mantey, Robert T. JensenAbstractDespite recent advances in treatment of non-small cell lung cancer (NSCLC), prognosis still remains poor and new therapeutic approaches are needed. Studies demonstrate the importance of the EGFR/HER-receptor family in NSCLC growth, as well as that of other tumors. Recently, HER3 is receiving increased attention because of its role in drug resistance and aggressive growth. Activation of overexpressed G-pr...
Source: Biochimica et Biophysica Acta (BBA) Molecular Cell Research - December 18, 2019 Category: Molecular Biology Source Type: research
Mediatory role of BLT2 in the proliferation of KRAS mutant colorectal cancer cells
In this study, we found that BLT2, a cell surface GPCR for leukotriene B4 and 12‑hydroxyeicosatetraenoic acid, is highly upregulated in KRAS mutant LOVO and SW480 colorectal cancer cells and plays critical roles in mediating proliferation through activation of phosphatidylinositol 3‑kinase (PI3K)/protein kinase B (Akt) and subsequent upregulation of cyclin D1. Exposure to BLT2 siRNA or LY255283, a specific BLT2 inhibitor, clearly suppressed the proliferation of KRAS mutant colorectal cancer cells and markedly increased cell cycle arrest by downregulating the PI3K/Akt-cyclin D1 cascade. Xenograft tumor formation by LOVO...
Source: Biochimica et Biophysica Acta (BBA) Molecular Cell Research - December 14, 2018 Category: Molecular Biology Source Type: research
Adducins inhibit lung cancer cell migration through mechanisms involving regulation of cell-matrix adhesion and cadherin-11 expression
This study investigated the roles of α-adducin (ADD1) and γ-adducin (ADD3) in regulating migration and invasion of non-small cell lung cancer (NSCLC) cells. ADD1 was mislocalized, whereas ADD3 was markedly downregulated in NSCLC cells with the invasive mesenchymal phenotype. CRISPR/Cas9-mediated knockout of ADD1 and ADD3 in epithelial-type NSCLC and normal bronchial epithelial cells promoted their Boyden chamber migration and Matrigel invasion. Furthermore, overexpression of ADD1, but not ADD3, in mesenchymal-type NSCLC cells decreased cell migration and invasion. ADD1-overexpressing NSCLC cells demonstrated increased ad...
Source: Biochimica et Biophysica Acta (BBA) Molecular Cell Research - October 5, 2018 Category: Molecular Biology Source Type: research
Lethal (2) giant larvae regulates pleural mesothelial cell polarity in pleural fibrosis
In this study, we observed that PMC polarity was lost in fibrotic pleura. Next we found increased Lethal (2) giant larvae (Lgl) bound with aPKC and PAR-6B competing against PAR-3A in PAR complex, which led to cell polarity loss. Then we demonstrated that Lgl1 siRNA prevented cell polarity loss in PMCs, and Lgl1 conditional knockout (ER-Cre+/−Lgl1flox/flox) attenuated pleural fibrosis in a mouse model. Our data indicated that Lgl1 regulates cell polarity of PMCs, inhibition of Lgl1 and maintenance of cell polarity in PMCs could be a potential therapeutic treatment approach for pleural fibrosis.
Source: Biochimica et Biophysica Acta (BBA) Molecular Cell Research - July 11, 2018 Category: Molecular Biology Source Type: research
c-Abl phosphorylation of Yin Yang 1's conserved tyrosine 254 in the spacer region modulates its transcriptional activity
In conclusion, we demonstrate the novel role of c-Abl kinase in regulation of YY1's transcriptional activity, linking YY1 regulation with c-Abl tyrosine kinase signaling pathways.Graphical abstract
Source: Biochimica et Biophysica Acta (BBA) Molecular Cell Research - July 11, 2018 Category: Molecular Biology Source Type: research
Lethal (2) giant larvae regulates pleural mesothelial cell polarity in pleural fibrosis
In this study, we observed that PMC polarity was lost in fibrotic pleura. Next we found increased Lethal (2) giant larvae (Lgl) bound with aPKC and PAR-6B competing against PAR-3A in PAR complex, which led to cell polarity loss. Then we demonstrated that Lgl1 siRNA prevented cell polarity loss in PMCs, and Lgl1 conditional knockout (ER-Cre+/−Lgl1flox/flox) attenuated pleural fibrosis in a mouse model. Our data indicated that Lgl1 regulates cell polarity of PMCs, inhibition of Lgl1 and maintenance of cell polarity in PMCs could be a potential therapeutic treatment approach for pleural fibrosis.
Source: Biochimica et Biophysica Acta (BBA) Molecular Cell Research - July 5, 2018 Category: Molecular Biology Source Type: research
c-Abl phosphorylation of Yin Yang 1's conserved tyrosine 254 in the spacer region modulates its transcriptional activity
In conclusion, we demonstrate the novel role of c-Abl kinase in regulation of YY1's transcriptional activity, linking YY1 regulation with c-Abl tyrosine kinase signaling pathways.Graphical abstract
Source: Biochimica et Biophysica Acta (BBA) Molecular Cell Research - July 5, 2018 Category: Molecular Biology Source Type: research
Lethal (2) giant larvae regulates pleural mesothelial cell polarity in pleural fibrosis
In this study, we observed that PMC polarity was lost in fibrotic pleura. Next we found increased Lethal (2) giant larvae (Lgl) bound with aPKC and PAR-6B competing against PAR-3A in PAR complex, which led to cell polarity loss. Then we demonstrated that Lgl1 siRNA prevented cell polarity loss in PMCs, and Lgl1 conditional knockout (ER-Cre+/− Lgl1 flox/flox ) attenuated pleural fibrosis in a mouse model. Our data indicated that Lgl1 regulates cell polarity of PMCs, inhibition of Lgl1 and maintenance of cell polarity in PMCs could be a potential therapeutic treatment approach for pleural fibrosis.
Source: Biochimica et Biophysica Acta (BBA) Molecular Cell Research - May 27, 2018 Category: Molecular Biology Source Type: research
c-Abl phosphorylation of Yin Yang 1's conserved tyrosine 254 in the spacer region modulates its transcriptional activity
In conclusion, we demonstrate the novel role of c-Abl kinase in regulation of YY1's transcriptional activity, linking YY1 regulation with c-Abl tyrosine kinase signaling pathways.
Source: Biochimica et Biophysica Acta (BBA) Molecular Cell Research - May 26, 2018 Category: Molecular Biology Source Type: research
GRP78 protects CHO cells from ribosylation
In this study, we found that cellular AGEs accumulate in Chinese hamster ovary (CHO) cells with increased Rib concentration and administration time. Mass spectrum analysis of isolated AGE-modified proteins from cell lysates showed that glucose-regulated protein 78 kD (GRP78) is one of the main ribosylated proteins. Co-immunoprecipitation assays further confirmed the interaction between AGEs and GRP78. Compared with d-glucose (Glc), Rib produced much more AGEs in cells. In kinetic studies, the first order rate constant of LDH released from CHO cells incubated with Rib was nearly 8-fold higher than that of Glc, suggesting th...
Source: Biochimica et Biophysica Acta (BBA) Molecular Cell Research - February 3, 2018 Category: Molecular Biology Source Type: research
Retinoic acid promotes stem cell differentiation and embryonic development by transcriptionally activating CFTR
Publication date: Available online 9 January 2018 Source:Biochimica et Biophysica Acta (BBA) - Molecular Cell Research Author(s): Xiaofeng Li, Kin Lam Fok, Jinghui Guo, Yan Wang, Zhenqing Liu, Ziyi Chen, Chengdong Wang, Ye Chun Ruan, Sidney Siubun Yu, Hui Zhao, Ji Wu, Xiaohua Jiang, Hsiao Chang Chan Retinoic acid (RA) plays a pivotal role in many cellular processes; however, the signaling mechanisms mediating the effect of RA are not fully understood. Here, we show that RA transcriptionally upregulates cystic fibrosis transmembrane conductance regulator (Cftr) by promoting the direct binding of its receptor RARα to Cftr ...
Source: Biochimica et Biophysica Acta (BBA) Molecular Cell Research - January 9, 2018 Category: Molecular Biology Source Type: research
Nerve/glial antigen (NG) 2 is a crucial regulator of intercellular adhesion molecule (ICAM)-1 expression
In this study, we demonstrate that in pericytes and glioblastoma cells intercellular adhesion molecule (ICAM)-1, an essential protein for leukocyte adhesion and transmigration, underlies a NG2-dependent expression. As shown by flow cytometry, Western blot analysis and quantitative real-time polymerase chain reaction (qRT-PCR), silencing of NG2 in human placenta-derived pericytes increased the expression of ICAM-1. Pathway analyses revealed that this is mediated by extracellular-regulated-kinases (ERK) 1/2 signaling. Moreover, leukocyte adhesion to NG2 siRNA-treated pericytes was significantly enhanced when compared to scra...
Source: Biochimica et Biophysica Acta (BBA) Molecular Cell Research - November 2, 2017 Category: Molecular Biology Source Type: research
Increasing extracellular Ca2+ sensitizes TNF-alpha-induced vascular cell adhesion molecule-1 (VCAM-1) via a TRPC1/ERK1/2/NF κB-dependent pathway in human vascular endothelial cells
This study provided direct evidence that increasing extracellular Ca2+ enhanced TNF-alpha-induced VCAM-1 activation and monocytes adhesion. Moreover, we identified a novel TRPC1/ERK1/2/NFκB signaling pathway mediating VCAM-1 activation and monocyte adhesion in this pathological process. Our studies indicate that blood calcium levels should be strictly monitored to help prevent CVD, and that TRPC1 might act as a potential target for the treatment and prevention against increased circulating calcium-enhanced CVDs.
Source: Biochimica et Biophysica Acta (BBA) Molecular Cell Research - June 3, 2017 Category: Molecular Biology Source Type: research
Activating transcription factor 6-dependent sestrin 2 induction ameliorates ER stress-mediated liver injury
Publication date: Available online 19 April 2017 Source:Biochimica et Biophysica Acta (BBA) - Molecular Cell Research Author(s): Kyung Hwan Jegal, Sang Mi Park, Sam Seok Cho, Sung Hui Byun, Sae Kwang Ku, Sang Chan Kim, Sung Hwan Ki, Il Je Cho Endoplasmic reticulum (ER) stress is characterized by an accumulation of misfolded proteins, and ER stress reduction is essential for maintaining tissue homeostasis. However, the molecular mechanisms that protect cells from ER stress are not completely understood. The present study investigated the role of sestrin 2 (SESN2) on ER stress and sought to elucidate the mechanism responsib...
Source: Biochimica et Biophysica Acta (BBA) Molecular Cell Research - April 19, 2017 Category: Molecular Biology Source Type: research
