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https://www.readbyqxmd.com/read/28537876/activation-of-perk-branch-of-er-stress-mediates-homocysteine-induced-bkca%C3%A2-channel-dysfunction-in-coronary-artery-via-foxo3a-dependent-regulation-of-atrogin-1
#1
Wen-Tao Sun, Xiang-Chong Wang, Shiu-Kwong Mak, Guo-Wei He, Xiao-Cheng Liu, Malcolm John Underwood, Qin Yang
The molecular mechanism of endoplasmic reticulum (ER) stress in vascular pathophysiology remains inadequately understood. We studied the role of ER stress in homocysteine-induced impairment of coronary dilator function, with uncovering the molecular basis of the effect of ER stress on smooth muscle large-conductance Ca2+-activated K+ (BKCa) channels. The vasodilatory function of BKCa channels was studied in a myograph using endothelium-denuded porcine small coronary arteries. Primary cultured porcine coronary artery smooth muscle cells were used for mRNA and protein measurements and current recording of BKCa channels...
May 9, 2017: Oncotarget
https://www.readbyqxmd.com/read/28537848/influence-of-endurance-training-on-skeletal-muscle-mitophagy-regulatory-proteins-in-type-2-diabetic-men
#2
Christian Brinkmann, Axel Przyklenk, Alexander Metten, Thorsten Schiffer, Wilhelm Bloch, Klara Brixius, Sebastian Gehlert
BACKGROUND: Mitophagy is a form of autophagy for the elimination of mitochondria. Mitochondrial content and function are reduced in the skeletal muscle of patients with type 2 diabetes mellitus (T2DM). Physical training has been shown to restore mitochondrial capacity in T2DM patients, but the role of mitophagy has not been examined in this context. This study analyzes the impact of a 3-month endurance training on important skeletal muscle mitophagy regulatory proteins and oxidative phosphorylation (OXPHOS) complexes in T2DM patients...
May 24, 2017: Endocrine Research
https://www.readbyqxmd.com/read/28535626/-expression-and-prognostic-significance-of-microenvironment-related-prognostic-factors-in-patients-with-classical-hodgkin-s-lymphoma
#3
T T Wang, S X Li, B Xia, H F Zhao, W Xu, H L Yang, X F Wang, Y Yu, B C Sun, Y Z Zhang
Objective: To observe the expression of three microenvironment related prognostic factors, i. e. programmed death 1 (PD-1), forkhead box protein 3(FOXP3) and colony-stimulating factor 1 receptor(CSF-1R) protein in classical Hodgkin's lymphoma (CHL) patients, and to explore the correlation between the protein expression and the prognosis of the patients. Methods: A total of 45 cases of CHL patients, who had been admitted to the Tianjin Medical University Cancer Institute and Hospital and Chinese PLA General Hospital from February 2005 to August 2010 were analyzed, including clinical features, prognostic factors, and treatment regimens...
May 16, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28534958/mir-204-regulates-the-biological-behavior-of-breast-cancer-mcf-7-cells-by-directly-targeting-foxa1
#4
Si-Qiao Shen, Lan-Shan Huang, Xiao-Ling Xiao, Xiao-Fei Zhu, Dan-Dan Xiong, Xue-Mei Cao, Kang-Lai Wei, Gang Chen, Zhen-Bo Feng
MicroRNAs (miRNAs) are short, non-protein-coding RNAs and transcripts that are 18-24 nt in length. miR-204 was first identified as an anti-oncogene and is reported to be downregulated in non-small cell lung cancer, glioma, gastric and thyroid cancer. Recent studies have proposed that a low level of miR-204 expression is associated with tumor progression and disease outcome in breast cancer. Forkhead box A1 (FOXA1), a transcription factor, plays a crucial role in breast cancer and has been predicted as a target of miR-204...
May 16, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28529575/japanese-kampo-medicine-ninjin-yoeito-synergistically-enhances-tumor-vaccine-effects-mediated-by-cd8-t-cells
#5
Shun Takaku, Masumi Shimizu, Hidemi Takahashi
Although Japanese traditional herbal medicine (Kampo) has been widely applied to the treatment of various diseases, including cancer, their mechanisms of action have not yet been elucidated in detail, particularly regarding their role in tumor immunology. The present study investigated the antitumor effects of the Japanese Kampo medicine, ninjin'yoeito (NYT; Ren-Shen-Yang-Rong-Tang in Chinese), which was orally administered with or without an irradiated tumor cell vaccine to a subcutaneous CT26 colon carcinoma tumor model...
May 2017: Oncology Letters
https://www.readbyqxmd.com/read/28529568/a-different-representation-of-natural-t-cells-and-natural-killer-cells-between-tumor-infiltrating-and-periphery-lymphocytes-in-human-hepatocellular-carcinoma
#6
Xiao-Feng Li, Dong Dai, Xiu-Yu Song, Jian-Jing Liu, Lei Zhu, Xiang Zhu, Wenchao Ma, Wengui Xu
Natural T cells [cluster of differentiation (CD) 3(+)CD56(+)] and natural killer (NK) cells (CD3(-)CD56(+)) are particularly abundant in the human liver and serve an important role in immune responses in the liver. The aim of the present study was to extensively determine the phenotypic and functional characteristics of natural T and NK cells in human hepatocellular carcinoma (HCC). Tumorous and non-tumorous tissue infiltrating lymphocytes (TILs and NILs, respectively) and peripheral blood mononuclear cells (PBMCs) from patients with hepatocellular carcinoma (HCC) were obtained to determine the frequency and phenotype of natural T/NK cells by a multicolor fluorescence activated cell sorting analysis...
May 2017: Oncology Letters
https://www.readbyqxmd.com/read/28529032/synergistic-cytotoxicity-of-lenalidomide-and-dexamethasone-in-mantle-cell-lymphoma-via-cereblon-dependent-targeting-of-the-il-6-stat3-pi3k-axis
#7
Jiexian Ma, Kefei Wu, Weiya Bai, Xiaoxian Cui, Yan Chen, Youhua Xie, Yanhui Xie
At our center, relapsed mantle cell lymphoma (MCL) can be treated with maintenance therapy composed of consecutive low-dose lenalidomide and short-term, high-dose dexamethasone (LD regimen), which achieves good responses (longer overall survival and progression-free survival) and low toxicity. Cereblon is probably targeted by both lenalidomide and dexamethasone, which leads to synergistic cytotoxicity in MCL by inhibiting the interleukin-6/signal transducer and activator of transcription 3 (IL-6/STAT3), phosphatidylinositol 3-kinase (PI3K)/AKT and AKT2/Forkhead box O3 (FOXO3A)/BCL2-like 11 (BIM) pathways...
May 10, 2017: EBioMedicine
https://www.readbyqxmd.com/read/28527294/activation-of-hypoxia-signaling-in-stromal-progenitors-impairs-kidney-development
#8
Katharina Gerl, Dominik Steppan, Michaela Fuchs, Charlotte Wagner, Carsten Willam, Armin Kurtz, Birgül Kurt
Intrauterine hypoxia is a reason for impaired kidney development. The cellular and molecular pathways along which hypoxia exerts effects on nephrogenesis are not well understood. They are likely triggered by hypoxia-inducible transcription factors (HIFs), and their effects appear to be dependent on the cell compartment contributing to kidney formation. In this study, we investigated the effects of HIF activation in the developing renal stroma, which also essentially modulates nephron development from the metanephric mesenchyme...
May 17, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28526626/longevity-and-healthy-ageing-genes-foxo3a-and-sirt3-serum-protein-marker-and-new-road-map-to-burst-oxidative-stress-by-withania-somnifera
#9
Rashmita Pradhan, Rahul Kumar, Shashank Shekhar, Nitish Rai, Akash Ambashtha, Joyita Banerjee, Mona Pathak, S N Dwivedi, Sharmistha Dey, Aparajit B Dey
BACKGROUND: Ageing process is characterized by a decline in function; different age related diseases and excessive age associated mortality. There has always been a quest for easily accessible biomarkers to monitor and identify the development of age-associated stress for providing new anti-ageing strategies. Forkhead box protein O3A (FOXO3A) and Sirtuin3 (SIRT3) are such potential markers which plays important role in a wide variety of cellular mechanisms and has been proposed to be an ideal candidate to study longevity and are potential candidate for healthy ageing by oxidative burst...
May 16, 2017: Experimental Gerontology
https://www.readbyqxmd.com/read/28526479/foxo-mediates-the-timing-of-pupation-through-regulating-ecdysteroid-biosynthesis-in-the-red-flour-beetle-tribolium-castaneum
#10
Xianyu Lin, Na Yu, Guy Smagghe
The steroid hormone 20-hydroxyecdysone (20E), the major developmental hormone in insects, controls all the developmental transitions including ecdysis and metamorphosis. In our study with last larval stages of the red flour beetle, Tribolium castaneum, dsRNA-mediated gene silencing of Forkhead box protein O (FoxO) resulted in reduced food intake and larval mass and this agreed with a reduction in the expression of insulin signaling-related genes (insulin-like peptides 2, 3, 4, and chico). Interestingly, we also observed a significant delay in the moment of the pupation and these FoxO-silenced larvae then died at the middle pupal stage...
May 16, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28521477/t-cell-immunity-induced-by-a-bivalent-salmonella-based-ceacam6-and-4-1bbl-vaccines-in-a-rat-colorectal-cancer-model
#11
Chunhui Jin, Xiaoqing Duan, Yingying Liu, Jianhong Zhu, Ke Zhang, Yuanting Zhang, Tingting Xia, Yajun Fei, Jianxin Ye
The present study investigated the anti-tumor mechanisms of recombinant non-specific cross-reacting antigen (CEACAM6) and 4-1BB ligand (4-1BBL) Salmonella-based vaccines, and the effect that these vaccinations have on memory T cells and T helper (Th) cell polarization. Colon tumors were induced in rats via 1,2-dimethylhydrazine (DMH) injections. Rats were then treated with injections of attenuated Salmonella typhimurium carrying pIRES-CEACAM6, pIRES-4-1BBL or pIRES-CEACAM6-4-1BBL. In total, 4 vaccine injections, one every other week, were administered during the 8 weeks subsequent to the DMH injection...
May 2017: Oncology Letters
https://www.readbyqxmd.com/read/28521455/kdm3a-promotes-inhibitory-cytokines-secretion-by-participating-in-tlr4-regulation-of-foxp3-transcription-in-lung-adenocarcinoma-cells
#12
Yinan Li, Wei Yang, Bin Wu, Yaqing Liu, Dongbei Li, Yantong Guo, Haiying Fu, Yi Li
Toll-like receptor 4 (TLR4) is a pattern recognition receptors, a member of the Toll-like receptor family and it serves a role in innate and acquired immunity. It has previously been reported that TLR4 was overexpressed in a variety of tumor tissues and cells, including colorectal cancer, gastric cancer and ovarian cancer. In the tumor microenvironment, the TLR4 signaling pathway may be activated in order to upregulate forkhead box P3 (Foxp3) expression in regulatory T cells (Tregs), and thus enhance the immunosuppressive function of Tregs...
May 2017: Oncology Letters
https://www.readbyqxmd.com/read/28521392/phosphorylation-and-acetylation-modifications-of-foxo3a-independently-or-synergistically
#13
Xianwang Wang, Shujuan Hu, Lei Liu
Forkhead box class O 3a (FOXO3a) is a transcription factor that has emerged as being a tumor suppressor and longevity factor. The precise regulation of FOXO3a transactivation of target genes is achieved via post-translational modifications (PTMs) and specific protein-protein interactions. The multiple types of PTMs that FOXO3a undergoes, including phosphorylation, acetylation, methylation and ubiquitination, serve important roles in directing its subcellular localization and transcription activity, which are central to the integration of insulin/growth factor signaling and oxidative/nutrient stress signaling...
May 2017: Oncology Letters
https://www.readbyqxmd.com/read/28514752/%C3%AE-msh-inhibits-adipose-inflammation-via-reducing-foxos-transcription-and-blocking-akt-jnk-pathway-in-mice
#14
Guannv Liu, Meihang Li, Muhammad Saeed, Yatao Xu, Qian Ren, Chao Sun
Alpha melanocyte stimulating hormone (αMSH) abates inflammation in multiple tissues, while Forkhead box proteins O (FoxOs) stimulate inflammatory cascade. However, the relationship between αMSH and FoxOs in adipose inflammation remains unclear. In this study, we used LPS-induced inflammation model, attempted to interpret the function of αMSH in inflammation and the interactions with FoxOs. Results indicated that upon inflammatory situation, the secretion of αMSH and the expression of its receptor MC5R were greatly decreased, but FoxOs expressions were elevated...
April 27, 2017: Oncotarget
https://www.readbyqxmd.com/read/28507478/melatonin-regulates-the-aging-mouse-hippocampal-homeostasis-via-the-sirtuin1-foxo1-pathway
#15
Anorut Jenwitheesuk, Parichart Boontem, Prapimpun Wongchitrat, Jiraporn Tocharus, Sujira Mukda, Piyarat Govitrapong
Sirtuin1 (SIRT1) and forkhead box transcription factor O subfamily 1 (FOXO1) play vital roles in the maintenance of hippocampal neuronal homeostasis during aging. Our previous study showed that melatonin, a hormone mainly secreted by the pineal gland, restored the impaired memory of aged mice. Age-related neuronal energy deficits contribute to the pathogenesis of several neurodegenerative disorders. An attempt has been made to determine whether the effect of melatonin is mediated through the SIRT1-FOXO1 pathways...
2017: EXCLI journal
https://www.readbyqxmd.com/read/28507327/pde3-inhibitor-and-egcg-combination-treatment-suppress-cancer-stem-cell-properties-in-pancreatic-ductal-adenocarcinoma
#16
Motofumi Kumazoe, Mika Takai, Shun Hiroi, Chieri Takeuchi, Maasa Yamanouchi, Takashi Nojiri, Hiroaki Onda, Jaehoon Bae, Yuhui Huang, Kanako Takamatsu, Shuya Yamashita, Shuhei Yamada, Kenji Kangawa, Takashi Takahashi, Hiroshi Tanaka, Hirofumi Tachibana
Recurrence following chemotherapy is observed in the majority of patients with pancreatic ductal adenocarcinoma (PDAC). Recent studies suggest that cancer stem cells (CSCs) may be involved in PDAC recurrence and metastasis. However, an efficient approach to targeting pancreatic CSCs remains to be established. Here we show that in cancer cells overexpressing the 67-kDa laminin receptor (67LR)-dependent cyclic GMP (cGMP) inducer, epigallocatechin-3-O-gallate (EGCG) and a phosphodiesterase 3 (PDE3) inhibitor in combination significantly suppressed the Forkhead box O3 and CD44 axis, which is indispensable for the CSC properties of PDAC...
May 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28507102/foxo3-pgc-1%C3%AE-signaling-axis-is-essential-for-cancer-stem-cell-properties-of-pancreatic-ductal-adenocarcinoma
#17
Motofumi Kumazoe, Mika Takai, Shun Hiroi, Chieri Takeuchi, Mai Kadomatsu, Takashi Nojiri, Hiroaki Onda, Jaehoon Bae, Yuhui Huang, Kanako Takamatsu, Shuya Yamashita, Kenji Kangawa, Hirofumi Tachibana
In 95% of patients with pancreatic ductal adenocarcinoma (PDAC), recurrence is observed following chemotherapy. Findings from several studies have indicated that cancer stem cells (CSCs) are resistant to anti-cancer agents and may be involved in cancer recurrence and metastasis. The CD44 protein is a major CSC marker, and CD44 also plays an indispensable role in the CSC properties in several cancers, including pancreatic cancer; however, no clinical approach exists to inhibit CD44 activity. Here, we have performed knockin/knock down experiments and we demonstrate that the forkhead box O3 (FOXO3)/liver kinase B1 (LKB1)/AMP-activated protein kinase (AMPK)/PPAR-γ co-activator-1β (PGC- 1β)/pyruvate dehydrogenase -A1 (PDHA1) pathway is essential for CD44 expression and CSC properties...
May 15, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28506991/sonic-hedgehog-regulation-of-foxf2-promotes-cranial-neural-crest-mesenchyme-proliferation-and-is-disrupted-in-cleft-lip-morphogenesis
#18
Joshua L Everson, Dustin M Fink, Joon Won Yoon, Elizabeth J Leslie, Henry W Kietzman, Lydia J Ansen-Wilson, Hannah M Chung, David O Walterhouse, Mary L Marazita, Robert J Lipinski
Cleft lip is one of the most common human birth defects, yet our understanding of the mechanisms that regulate lip morphogenesis is limited. Here, we show that Sonic Hedgehog (Shh)-induced proliferation of cranial neural crest cell (cNCC) mesenchyme is required for upper lip closure. Gene expression profiling revealed a subset of Forkhead box (Fox) genes regulated by Shh signaling during lip morphogenesis. During cleft pathogenesis, reduced proliferation in the medial nasal process mesenchyme paralleled the domain of reduced Foxf2 and Gli1 expression...
May 15, 2017: Development
https://www.readbyqxmd.com/read/28505239/foxo1-promotes-mitophagy-in-the-podocytes-of-diabetic-male-mice-via-the-pink1-parkin-pathway
#19
Wen Li, Mengmeng Du, Qingzhu Wang, Xiaojun Ma, Lina Wu, Feng Guo, Hongfei Ji, Fengjuan Huang, Guijun Qin
We recently showed that Forkhead-box class O1 (FoxO1) activation protects against high glucose-induced injury by preventing mitochondrial dysfunction in the rat kidney cortex. In addition, FoxO1 has been reported to mediate PINK1 transcription and promote autophagy in response to mitochondrial oxidative stress in murine cardiomyocytes. In this study, we ascertained whether over-expressing FoxO1 in the kidney cortex reverses pre-established diabetic nephropathy in animal models. The effect of FoxO1 on mitophagy signaling pathways was evaluated in mouse podocytes...
May 12, 2017: Endocrinology
https://www.readbyqxmd.com/read/28503202/stabilization-of-foxp3-expression-by-crispr-dcas9-based-epigenome-editing-in-mouse-primary-t-cells
#20
Masahiro Okada, Mitsuhiro Kanamori, Kazue Someya, Hiroko Nakatsukasa, Akihiko Yoshimura
BACKGROUND: Epigenome editing is expected to manipulate transcription and cell fates and to elucidate the gene expression mechanisms in various cell types. For functional epigenome editing, assessing the chromatin context-dependent activity of artificial epigenetic modifier is required. RESULTS: In this study, we applied clustered regularly interspaced short palindromic repeats (CRISPR)-dCas9-based epigenome editing to mouse primary T cells, focusing on the Forkhead box P3 (Foxp3) gene locus, a master transcription factor of regulatory T cells (Tregs)...
2017: Epigenetics & Chromatin
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