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https://www.readbyqxmd.com/read/28720846/physiological-stress-induced-corticosterone-increases-heme-uptake-via-klf4-hcp1-signaling-pathway-in-hippocampus-neurons
#1
Hongxia Li, Caixia Zhang, Hui Shen, Zhilei Shen, Lusha Wu, Fengfeng Mo, Min Li
Iron overload has attracted much attention because of its adverse effect in increasing the risk of developing several neurodegenerative disorders. Under various pathologic conditions, a lot of heme are released. The aggregation of heme is more neurotoxic than that of iron released from the heme breakdown. Our previous studies demonstrated that psychological stress (PS) is a risk factor of cerebral iron metabolism disorders, thus causing iron accumulation in rat brains. In the present study, we found PS could increase heme uptake via heme carrier protein 1 (HCP1) in rat brains...
July 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28716732/lysophosphatidic-acid-signaling-regulates-the-klf9-ppar%C3%AE-axis-in-human-induced-pluripotent-stem-cell-derived-neurons
#2
Tamotsu Tsukahara, Shuhei Yamagishi, Yoshikazu Matsuda, Hisao Haniu
Lysophosphatidic acid (LPA) is a lipid signaling molecule that plays several significant roles in the nervous system during development and injury. In this study, we differentiated human induced pluripotent stem cells (iPSCs) into neurons as an in vitro model to examine the specific effects of LPA. We demonstrated that LPA activates peroxisome proliferator-activated receptor gamma (PPARγ), a ligand-activated nuclear receptor, as well as its cognate receptor LPA1 on human iPSC-derived neurons to enhance proliferation and neurite outgrowth...
July 14, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28716076/klf8-regulates-left-right-asymmetric-patterning-through-modulation-of-kupffer-s-vesicle-morphogenesis-and-spaw-expression
#3
Che-Yi Lin, Ming-Yuan Tsai, Yu-Hsiu Liu, Yu-Fen Lu, Yi-Chung Chen, Yun-Ren Lai, Hsin-Chi Liao, Huang-Wei Lien, Chung-Hsiang Yang, Chang-Jen Huang, Sheng-Ping L Hwang
BACKGROUND: Although vertebrates are bilaterally symmetric organisms, their internal organs are distributed asymmetrically along a left-right axis. Disruption of left-right axis asymmetric patterning often occurs in human genetic disorders. In zebrafish embryos, Kupffer's vesicle, like the mouse node, breaks symmetry by inducing asymmetric expression of the Nodal-related gene, spaw, in the left lateral plate mesoderm (LPM). Spaw then stimulates transcription of itself and downstream genes, including lft1, lft2, and pitx2, specifically in the left side of the diencephalon, heart and LPM...
July 17, 2017: Journal of Biomedical Science
https://www.readbyqxmd.com/read/28713898/identification-of-potential-biomarkers-and-therapeutic-targets-for-human-iga-nephropathy-and-hypertensive-nephropathy-by-bioinformatics-analysis
#4
Yingchun Cui, Shengmao Liu, Wenpeng Cui, Dan Gao, Wenhua Zhou, Ping Luo
In order to further elucidate the potential correlations and treatments of IgA nephropathy (IgAN) and hypertensive nephropathy (HT), bioinformatics analysis of IgAN and HT was performed. The mRNA expression profiles of human renal biopsy samples from patients with IgAN, patients with HT and pre‑transplant healthy living controls (LD) were downloaded from the Gene Expression Omnibus database. Then, the differentially expressed genes (DEGs) were identified and functions of DEGs were analyzed. Finally, the regulatory networks containing DEGs and related‑transcription factors (TFs) were constructed using Cytoscape software...
July 15, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28699690/microrna-let-7g-suppresses-pdgf-induced-conversion-of-vascular-smooth-muscle-cell-into-the-synthetic-phenotype
#5
Tzu-Ming Wang, Ku-Chung Chen, Po-Yuan Hsu, Hsiu-Fen Lin, Yung-Song Wang, Chien-Yuan Chen, Yi-Chu Liao, Suh-Hang H Juo
Platelet-derived growth factor (PDGF) can promote vascular smooth muscle cells (VSMCs) to switch from the quiescent contractile phenotype to synthetic phenotype, which contributes to atherosclerosis. We aimed to investigate the role of microRNA let-7g in phenotypic switching. Bioinformatics prediction was used to find let-7g target genes in the PDGF/mitogen-activated protein kinase kinase kinase 1 (MEKK1)/extracellular signal-regulated kinase (ERK)/Krüppel-like factor-4 (KLF4) signalling pathway that affects VSMC phenotypic switching...
July 12, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28695964/segmentation-gene-expression-patterns-in-bactrocera-dorsalis-and-related-insects-regulation-and-shape-of-blastoderm-and-larval-cuticle
#6
Worramin Suksuwan, Xiaoli Cai, Lertluk Ngernsiri, Stefan Baumgartner
The oriental fruit fly, Bactrocera dorsalis, is regarded as a severe pest of fruit production in Asia. Despite its economic importance, only limited information regarding the molecular and developmental biology of this insect is known to date. We provide a detailed analysis of B. dorsalis embryology, as well as the expression patterns of a number of segmentation genes known to act during patterning of Drosophila and compare these to the patterns of other insect families. An anterior shift of the expression of gap genes was detected when compared to Drosophila...
2017: International Journal of Developmental Biology
https://www.readbyqxmd.com/read/28694421/kr%C3%A3-ppel-like-factor-4-enhances-sensitivity-of-cisplatin-to-esophageal-squamous-cell-carcinoma-escc-cells
#7
Chuangui Chen, Zhao Ma, Hongdian Zhang, Xiaoqiong Liu, Zhentao Yu
BACKGROUND The aim of this study was to elucidate the role of Krüppel-Like factor 4 (KLF4) in cisplatin resistance in esophageal squamous cell carcinoma (ESCC) cells, which may eventually help to improve the treatment efficacy. MATERIAL AND METHODS Human esophageal squamous cell carcinoma (ESCC) cell line CaEs-17, TE-1, EC109, KYSE510, KYSE140, KYSE70, and KYSE30 were selected to detect their sensitivity to cisplatin. 5-Azacytidine-2'-deoxycytidine (5'-Aza-CdR) treatment and methylation-specific PCR (MS-PCR) were used to detect the methylation status for KLF4...
July 11, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28683306/ror%C3%AE-induces-klf4-mediated-m2-polarization-in-the-liver-macrophages-that-protect-against-nonalcoholic-steatohepatitis
#8
Yong-Hyun Han, Hyeon-Ji Kim, Hyelin Na, Min-Woo Nam, Ju-Yeon Kim, Jun-Seok Kim, Seung-Hoi Koo, Mi-Ock Lee
The regulation of M1/M2 polarization in liver macrophages is closely associated with the progression of nonalcoholic steatohepatitis (NASH); however, the mechanism involved in this process remains unclear. Here, we describe the orphan nuclear receptor retinoic-acid-related orphan receptor α (RORα) as a key regulator of M1/M2 polarization in hepatic residential Kupffer cells (KCs) and infiltrated monocyte-derived macrophages. RORα enhanced M2 polarization in KCs by inducing the kruppel-like factor 4. M2 polarization was defective in KCs and bone-marrow-derived macrophages of the myeloid-specific RORα null mice, and these mice were susceptible to HFD-induced NASH...
July 5, 2017: Cell Reports
https://www.readbyqxmd.com/read/28681739/molecular-mechanisms-of-the-intracranial-aneurysms-and-their-association-with-the-long-noncoding-ribonucleic-acid-anril-a-review-of-literature
#9
REVIEW
Jiang Che
Long noncoding ribonucleic acids (RNAs) are important regulators of gene expression. Antisense noncoding RNA in the INK4 locus (ANRIL), which was coded on the Chr9p21.3 loci, participates in the pathogenesis of tumor, coronary artery disease, type 2 diabetes mellitus, and other diseases. A genome-wide association study indicated ANRIL to be a candidate gene that may lead to the development of an intracranial aneurysm (IA) formation. However, the detailed molecular mechanisms are unknown and have not been studied...
July 2017: Neurology India
https://www.readbyqxmd.com/read/28680571/simvastatin-induced-sphingosine-1-phosphate-receptor-1-expression-is-klf2-dependent-in-human-lung-endothelial-cells
#10
Xiaoguang Sun, Biji Mathew, Saad Sammani, Jeffrey R Jacobson, Joe G N Garcia
We have demonstrated that simvastatin and sphingosine 1-phosphate (S1P) both attenuate increased vascular permeability in preclinical models of acute respiratory distress syndrome. However, the underlying mechanisms remain unclear. As Krüppel-like factor 2 (KLF2) serves as a critical regulator for cellular stress response in endothelial cells (EC), we hypothesized that simvastatin enhances endothelial barrier function via increasing expression of the barrier-promoting S1P receptor, S1PR1, via a KLF2-dependent mechanism...
March 2017: Pulmonary Circulation
https://www.readbyqxmd.com/read/28677764/serum-is-an-indispensable-factor-in-the-maintenance-of-the-biological-characteristics-of-sweat-gland-cells
#11
Qing Sun, Xiao-Mei Deng, Yun-Liang Wang, Yun-Fang Zhen, Fang Li, Rui-Hua Chen, Han-Si Liang, Feng Zhang, Ming-De Qin, Xue-Guang Zhang
The tolerance of sweat gland cells for in vitro amplification and subcultivation is low as they are somatic cells. The present study aimed to formulate an optimal medium for the culture of human eccrine sweat gland cells (HESGCs) and to establish a method for induction of HESGCs proliferation, whilst maintaining the characteristics of sweat gland cells. HESGCs cultured in sweat gland (SG):keratinocyte growth medium‑2 (KGM‑2) (1:1) medium had a higher proliferation rate and a stable morphology compared with cells cultured in SG and KGM‑2 medium only...
July 4, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28677721/zinc-finger-protein-545-is-inactivated-due-to-promoter-methylation-and-functions-as-a-tumor-suppressor-through-the-wnt-%C3%AE-catenin-pi3k-akt-and-mapk-erk-signaling-pathways-in-colorectal-cancer
#12
Shili Xiang, Tingxiu Xiang, Qian Xiao, Yunhai Li, Bianfei Shao, Tao Luo
The transcription factor, zinc-finger protein 545 (ZNF545), that belongs to the Kruppel-associated box zinc-finger protein (KRAB-ZFP) family, acts as a tumor suppressor and is inactivated by promoter methylation in cancers such as nasopharyngeal carcinoma, breast cancer, and gastric cancer, but its role in colorectal cancer (CRC) is unknown. The purpose of this study was to characterize the ZNF545 expression, methylation status, biological function, and related molecular mechanisms in CRC. The results showed that ZNF545 was expressed in adult normal colorectal tissues, but downregulated or silenced in CRC cell lines, and this mechanism was reversed by demethylation treatment with 5-aza-2'-deoxycytidine and trichostatin A...
July 4, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28670390/klf16-promotes-proliferation-in-gastric-cancer-cells-via-regulating-p21-and-cdk4
#13
Pei Ma, Chong-Qi Sun, Yan-Fen Wang, Yu-Tian Pan, Qin-Nan Chen, Wei-Tao Liu, Jie Liu, Chen-Hui Zhao, Yong-Qian Shu, Wei Li
Krüppel-like factors (KLFs), such as KLF4, KLF2, KLF5 and KLF15, have been extensively investigated in multi-cancers. However, KLF16, a member of KLFs, hasn't been well identified in cancer, especially in gastric cancer (GC). Here, we investigated the roles of KLF16 in GC. In present study, we found that KLF16 expression levels were significantly up-regulated in GC tissues compared to adjacent normal tissues both in protein and mRNA levels by using immunohistochemistry assays (IHC) and real-time quantitative PCR (qPCR)...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28668877/klf9-is-a-prognostic-indicator-in-human-pancreatic-ductal-adenocarcinoma
#14
Zhengfa Mao, Xin Fan, Jianxin Zhang, Xuqing Wang, Xiaoyan Ma, Christoph W Michalski, Yong Zhang
BACKGROUND: The aim of this study was to investigate the expression of Krüppel-like factor 9 (KLF9) and its clinicopathological significance and prognostic value in pancreatic ductal adenocarcinoma. PATIENTS AND METHODS: A total of 149 patients diagnosed with pancreatic ductal adenocarcinoma who underwent curative surgery were enrolled in this study. The expression of KLF9 was examined immunohistochemically. The correlation of KLF9 with clinicopathological parameters and overall survival rate of patients were analyzed...
July 2017: Anticancer Research
https://www.readbyqxmd.com/read/28665994/a-novel-role-of-kr%C3%A3-ppel-like-factor-4-in-zhikong-scallop-chlamys-farreri-during-spermatogenesis
#15
Dandan Yang, Zhifeng Zhang, Shaoshuai Liang, Qiankun Yang, Yingrui Wang, Zhenkui Qin
Krüppel-like factor 4 (KLF4) is a kind of zinc finger transcription factor, which is involved in terminal differentiation of epithelial cells and reprogramming of somatic cells to induced pluripotent stem (iPS) cells in mammals. In the present study, we identified a full-length cDNA of Klf4 in Zhikong scallop Chamys farreri (Cf-Klf4) and found that Cf-Klf4 presented a sexual dimorphic expression characteristic in C. farreri gonads. Cf-Klf4 expression was significantly higher in testes than in ovaries from growing stage to mature stage detected by quantitative real-time PCR, and was located in male gametes, except for spermatozoa during spermatogenesis through in situ hybridization and immunohistochemistry, while no positive signal was visible in female gametes during oogenesis...
2017: PloS One
https://www.readbyqxmd.com/read/28659310/dna-methyltransferase-1-induces-dedifferentiation-of-pancreatic-cancer-cells-through-silencing-of-kr%C3%A3-ppel-like-factor-4-expression
#16
Victoria K Xie, Zhiwei Li, Yongmin Yan, Zhiliang Jia, Xiangsheng Zuo, Ju Zhenjin, Jing Wang, Jiawei Du, Dacheng Xie, Daoyan Wei, Keping Xie
The dismal prognosis of pancreatic cancer has been linked to poor tumor differentiation. However, molecular basis of pancreatic cancer differentiation and potential therapeutic value of the underlying molecules remain unknown. We investigated the mechanistic underexpression of Krüppel-like factor 4 (KLF4) in pancreatic cancer and defined a novel epigenetic pathway of its activation for pancreatic cancer differentiation and treatment.<br /><br />Experimental Design: Expressions of KLF4 and DNMT1 in pancreatic cancer tissues were determined by immunohistochemistry and the genetic and epigenetic alterations of KLF4 in and KLF4's impact on differentiation of pancreatic cancer were examined using molecular biology techniques...
June 28, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28659276/klf1-drives-the-expression-of-fetal-hemoglobin-in-british-hpfh
#17
Beeke Wienert, Gabriella E Martyn, Ryo Kurita, Yukio Nakamura, Kate G R Quinlan, Merlin Crossley
β-hemoglobinopathies are amongst the most common single locus inherited diseases. In this condition high fetal hemoglobin (HbF) levels have been found to be beneficial and boosting fetal hemoglobin expression is seen as an attractive therapy. Naturally occurring mutations in the fetal globin promoter can result in high HbF persisting into adulthood in a benign condition known as Hereditary Persistence of Fetal Hemoglobin (HPFH). Individuals with one form of HPFH, British HPFH, carry a T to C substitution at position -198 of the fetal globin gene promoter...
June 28, 2017: Blood
https://www.readbyqxmd.com/read/28656310/klf4-inhibits-colorectal-cancer-cell-proliferation-dependent-on-ndrg2-signaling
#18
Yongzheng Ma, Lin Wu, Xuewu Liu, Yuqiao Xu, Wei Shi, Ye Liang, Libo Yao, Jianyong Zheng, Jian Zhang
Krüppel-like factor 4 (KLF4) is a zinc finger transcription factor, which was confirmed as a tumor suppressor gene in colorectal cancers. KLF4 inhibits colorectal cancer cells proliferation through upregulating p21WAF1/Cip1 and downregulating cyclin D1. We firstly reported that N-Myc downstream regulated gene 2 (NDRG2) was a novel tumor suppressor gene in multiple cancers, such as glioma, breast cancer and colorectal cancer. Herein, we provide novel evidence that KLF4 can transcriptionally activate NDRG2 by binding with NDRG2 promoter...
June 21, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28654330/early-transcriptional-responses-during-heat-stress-in-the-coral-acropora-hyacinthus
#19
Nikki Traylor-Knowles, Noah H Rose, Elizabeth A Sheets, Stephen R Palumbi
Corals respond to heat pulses that cause bleaching with massive transcriptional change, but the immediate responses to stress that lead up to these shifts have never been detailed. Understanding these early signals could be important for identifying the regulatory mechanisms responsible for bleaching and how these mechanisms vary between more and less resilient corals. Using RNA sequencing (RNAseq) and sampling every 30 minutes during a short-term heat shock, we found that components of the transcriptome were significantly upregulated within 90 min and after a temperature increase of +2 °C...
April 2017: Biological Bulletin
https://www.readbyqxmd.com/read/28653987/the-emerging-role-of-zfp217-in-adipogenesis
#20
Hong Xiang, Zhu-Xia Zhong, Yong-Dong Peng, Si-Wen Jiang
Zinc finger protein 217 (Zfp217), a member of the krüppel-type zinc finger protein family, plays diverse roles in cell differentiation and development of mammals. Despite extensive research on the functions of Zfp217 in cancer, pluripotency and reprogramming, its physiological roles in adipogenesis remain unknown. Our previous RNA sequencing data suggest the involvement of Zfp217 in adipogenesis. In this study, the potential function of Zfp217 in adipogenesis was investigated through bioinformatics analysis and a series of experiments...
June 27, 2017: International Journal of Molecular Sciences
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