Read by QxMD icon Read


Friederike Flachsbart, Janina Dose, Liljana Gentschew, Claudia Geismann, Amke Caliebe, Carolin Knecht, Marianne Nygaard, Nandini Badarinarayan, Abdou ElSharawy, Sandra May, Anne Luzius, Guillermo G Torres, Marlene Jentzsch, Michael Forster, Robert Häsler, Kathrin Pallauf, Wolfgang Lieb, Céline Derbois, Pilar Galan, Dmitriy Drichel, Alexander Arlt, Andreas Till, Ben Krause-Kyora, Gerald Rimbach, Hélène Blanché, Jean-François Deleuze, Lene Christiansen, Kaare Christensen, Michael Nothnagel, Philip Rosenstiel, Stefan Schreiber, Andre Franke, Susanne Sebens, Almut Nebel
The original version of this Article contained an error in the spelling of the author Robert Häsler, which was incorrectly given as Robert Häesler. This has now been corrected in both the PDF and HTML versions of the Article.
January 17, 2018: Nature Communications
Lina Ren, Yi Zhao, Xiaoxi Huo, Xin Wu
Vulvar lichen sclerosis (VLS) is a chronic inflammatory skin disorder. Evidence is accumulating that microRNAs (miRNAs) exert crucial roles in initiation and development of a wide range of human diseases. MiR-155-5p has been frequently reported to be implicated in the tumorigenesis and progression of multiple types of cancers, however, its biological role in VLS remains unclear. This study aimed to explore the role of miR-155-5p in VLS and clarify the potential molecular mechanisms involved. In the present study, miR-155-5p was observed to be significantly upregulated in VLS tissues...
January 12, 2018: Gene
Yalan Deng, Yuzhong Xiao, Feixiang Yuan, Yaping Liu, Xiaoxue Jiang, Jiali Deng, Geza Fejes-Toth, Aniko Naray-Fejes-Toth, Shanghai Chen, Yan Chen, Hao Ying, Qiwei Zhai, Yousheng Shu, Feifan Guo
Although central nervous system has been implicated in glucocorticoid-induced fat mass gain, the underlying mechanisms are poorly understood. The aim of our current study was to investigate the possible involvement of hypothalamic serum- and glucocorticoid-regulated kinase 1 (SGK1) in glucocorticoid-increased adiposity. It is well-known that SGK1 expression is induced by acute glucocorticoid treatment, interestingly, we found its expression was decreased in the arcuate nucleus of the hypothalamus, including POMC neurons, following chronic dexamethasone (Dex) treatment...
January 10, 2018: Diabetes
Alexander K Salomon, Kathleen Leon, Melissa M Campbell, Kelly A Young
The early stages of ovarian folliculogenesis generally progress independent of gonadotropins, whereas later stages require signaling initiated by FSH. In Siberian hamsters, cycles of folliculogenesis are mediated by changes in photoperiod which depress the hypothalamic pituitary gonadal axis. Reduced gonadotropins lead to decreases in mature follicle development and ovulation; however, early stages of folliculogenesis have not been explored in regressed ovaries. We hypothesized that intraovarian factors that contribute predominantly to later stages of folliculogenesis would react to changes in photoperiod, whereas factors contributing to earlier stages would not change...
January 6, 2018: General and Comparative Endocrinology
Youcai Deng, Fangjie Wang, Tiffany Hughes, Jianhua Yu
In the tumor microenvironment (TME), cancer cells, stromal cells, and immune cells, along with their extracellular factors, have profound effects on either promoting or repressing anti-cancer immunity. Accumulating evidence has shown the paradoxical intrinsic role of the Forkhead box O (FOXO) family of transcription factors in cancer, which can act as a tumor repressor while also maintaining cancer stem cells. FOXOs also regulate cancer immunity. FOXOs promote antitumor activity through negatively regulating the expression of immunosuppressive proteins, such as programmed death 1 ligand 1 (PD-L1) and vascular endothelial growth factor (VEGF) in tumor cells or stromal cells, which can shape an immunotolerant state in the TME...
January 5, 2018: Seminars in Cancer Biology
Heon Shin, Hyun-Jeong Cha, Keun Na, Min Jung Lee, Jin-Young Cho, Chae-Yeon Kim, Eun Kyung Kim, Chang Moo Kang, Hoguen Kim, Young-Ki Paik
Post-translational modifications of tumor suppressors can induce abnormal cell growth. Here we identify site-specific O-GlcNAcylation as a critical block of FOXO3 that may abrogate a part of the p53 pathway, resulting in aberrant cancer cell growth. Of seven O-GlcNAcylation sites identified within the FOXO3 transactivation domain, we found that changes in O-GlcNAcylation at Ser284 modulated p21-mediated cancer cell growth. Overexpression of either O-GlcNAcylated FOXO3 (FOX-OV) or a Ser-to-Ala mutant (S284A) in PANC-1 cells indicated that S284 O-GlcNAc acts as a critical block of the FOXO tumor suppressor and induces proliferation in PANC-1 cancer cells by stimulating the MDM2-p53-p21 axis...
January 4, 2018: Cancer Research
Snehangshu Kundu, Muhammad Akhtar Ali, Niklas Handin, Narendra Padhan, Jimmy Larsson, Maria Karoutsou, Kenneth Ban, Jacek R Wiśniewski, Per Artursson, Liqun He, Mats Hellström, Tobias Sjöblom
BACKGROUND: The Ras pathway genes KRAS, BRAF, or ERBBs have somatic mutations in ~ 60% of human colorectal carcinomas. At present, it is unknown whether the remaining cases lack mutations activating the Ras pathway or whether they have acquired mutations in genes hitherto unknown to belong to the pathway. METHODS: To address the second possibility and extend the compendium of Ras pathway genes, we used genome-wide transposon mutagenesis of two human colorectal cancer cell systems deprived of their activating KRAS or BRAF allele to identify genes enabling growth in low glucose, a Ras pathway phenotype, when targeted...
January 4, 2018: Genome Medicine
Sun-Yong Kim, Hyo Jeong Kim, Hyung Kwon Byeon, Dae Ho Kim, Chul-Ho Kim
AKT (also known as protein kinase B, PKB) plays an important role in cell survival or tumor progression. For these reasons, AKT is an emerging target for cancer therapeutics. Previously our studies showed that mitochondrial E3 ubiquitin protein ligase 1 (MUL1, also known as MULAN/GIDE/MAPL) is suppressed in head and neck cancer (HNC) and acts as negative regulator against AKT. However, the MUL1 regulatory mechanisms remain largely unknown. Here we report that cisplatin (CDDP) induces thyroid cancer cell death through MUL1-AKT axis...
December 15, 2017: Oncotarget
Wanchen Wang, Chengwen Hang, Yanqing Zhang, Mingshi Chen, Xinyu Meng, Qing Cao, Nana Song, Jacobi Itkow, Feiyang Shen, Duonan Yu
One fundamental issue in public health is the safety of food products derived from plants and animals. A recent study raised a concern that microRNAs, which widely exist in everyday foods, may alter consumers' functions. However, some studies have strongly questioned the likelihood of dietary uptake of functional microRNAs in mammals. Here we use a microRNA gene knockout animal model to show that miR-144/451 null mice can orally uptake miR-451 from a daily chow diet, and ingestion of wild type blood, that contains abundant miR-451, also enhances the level of miR-451 in the circulating blood of knockout mice...
December 5, 2017: Oncotarget
Nitin Bhardwaj, Ashutosh Singh
The present study is focused on the interaction of paraquat with the erythroid system in bone marrow and spleen of mice. Administration of paraquat (10 mg/kg of body weight i.p. on alternate days in C57Bl/6 mice) induced the level of reactive oxygen species in bone marrow (BM) on 7, 14, and 21 day time points but it was unchanged in spleen erythroid cell. A marked induction of CD147 expression in BM and spleen erythroid cells was observed in the paraquat treated mice. Paraquat treatment also modulated the CD47 expression in erythroid cells and its expression level was significantly higher on day 14, 21 and 28 in bone marrow and on day 14 and 21 in spleen...
December 23, 2017: Environmental Toxicology and Pharmacology
Ning Wang, Jiahui Zhang, Mengting Qin, Wenjing Yi, Shuang Yu, Yi Chen, Jing Guan, Rui Zhang
Pancreatic β cells are sensitive to oxidative stress, which is one of the predominant causes of cell damage and the emergence of diabetes. The identification of effective therapeutic strategies to protect pancreatic cells from oxidative stress has increased interest in the screening of antioxidants from natural products. The present study aimed to investigate the protective effects of morin against streptozotocin (STZ)‑induced cell damage in a rat insulinoma cell line (RINm5F pancreatic β cells) and to identify the underlying mechanisms...
December 29, 2017: International Journal of Molecular Medicine
Dylan M Williams, Ida K Karlsson, Nancy L Pedersen, Sara Hägg
OBJECTIVE: To examine whether genetically predicted variation in circulating insulin-like growth factor 1 (IGF1) or its binding protein, IGFBP3, are associated with risk of Alzheimer disease (AD), using a mendelian randomization study design. METHODS: We first examined disease risk by genotypes of 9 insulin-like growth factor (IGF)-related single nucleotide polymorphisms (SNPs) using published summary genome-wide association statistics from the International Genomics of Alzheimer's Project (IGAP; n = 17,008 cases; 37,154 controls)...
December 27, 2017: Neurology
Hye-Eun Byeon, Ja Young Jeon, Hae Jin Kim, Dae Jung Kim, Kwan-Woo Lee, Yup Kang, Seung Jin Han
Saturated fatty acids were proposed to activate the NLRP3 inflammasome, a molecular platform that mediates the processing of interleukin (IL)-1β and IL-18. However, the mechanisms underlying the miRNA-mediated regulation of palmitate (PA)-induced inflammasome activation are unclear. We examined the role of miR-132 in PA-induced NLRP3 inflammasome activation in THP-1 cells. To understand the regulatory role of miR-132 in inflammasome activation, we either overexpressed or suppressed miR-132 in THP-1 cells that expressed the NLRP3 inflammasome in response to stimulation by PA...
December 18, 2017: Nutrients
Helene Möllerherm, Karsten Meier, Kathrin Schmies, Herbert Fuhrmann, Hassan Y Naim, Maren von Köckritz-Blickwede, Katja Branitzki-Heinemann
Mast cells (MCs) are long-living multifunctional innate immune cells that originate from hematopoietic precursors and specifically differentiate in the destination tissue, e.g., skin, respiratory mucosa, intestine, where they mediate immune cell recruitment and antimicrobial defense. In vivo these tissues have characteristic physiological oxygen levels that are considerably lower than the atmospheric oxygen conditions (159 mmHg, 21% O2; 5% CO2) traditionally used to differentiate MCs and to study their functionality in vitro...
2017: Frontiers in Immunology
Timothy A Donlon, Bradley J Willcox, Brian J Morris
No abstract text is available yet for this article.
December 14, 2017: Aging
Friederike Flachsbart, Janina Dose, Liljana Gentschew, Claudia Geismann, Amke Caliebe, Carolin Knecht, Marianne Nygaard, Nandini Badarinarayan, Abdou ElSharawy, Sandra May, Anne Luzius, Guillermo G Torres, Marlene Jentzsch, Michael Forster, Robert Häesler, Kathrin Pallauf, Wolfgang Lieb, Céline Derbois, Pilar Galan, Dmitriy Drichel, Alexander Arlt, Andreas Till, Ben Krause-Kyora, Gerald Rimbach, Hélène Blanché, Jean-François Deleuze, Lene Christiansen, Kaare Christensen, Michael Nothnagel, Philip Rosenstiel, Stefan Schreiber, Andre Franke, Susanne Sebens, Almut Nebel
FOXO3 is consistently annotated as a human longevity gene. However, functional variants and underlying mechanisms for the association remain unknown. Here, we perform resequencing of the FOXO3 locus and single-nucleotide variant (SNV) genotyping in three European populations. We find two FOXO3 SNVs, rs12206094 and rs4946935, to be most significantly associated with longevity and further characterize them functionally. We experimentally validate the in silico predicted allele-dependent binding of transcription factors (CTCF, SRF) to the SNVs...
December 12, 2017: Nature Communications
Haoran Guo, Enmin Ding, Ying Bai, Hengdong Zhang, Huanxi Shen, Jun Wang, Xianping Song, Wenyan Cai, Jiadi Guo, Baoli Zhu
Noise induced hearing loss (NIHL), a multifactorial disease involving both genetic and environmental factors, is one of the most important occupational health hazards. Nonetheless, the influence of FOXO3 variants on NIHL risk have not been illuminated. This research was conducted to explore the effects of FOXO3 polymorphisms on individual susceptibility to NIHL. A total of 2689 industrial workers from one textile factory of east China were recruited to participate in the current research. Venous blood was collected, questionnaire and pure-tone audiometry (PTA) was conducted by specialist physicians...
2017: PloS One
Hamza M Al-Tamari, Swati Dabral, Anja Schmall, Pouya Sarvari, Clemens Ruppert, Jihye Paik, Ronald A DePinho, Friedrich Grimminger, Oliver Eickelberg, Andreas Guenther, Werner Seeger, Rajkumar Savai, Soni S Pullamsetti
Idiopathic pulmonary fibrosis (IPF) is a progressive and fatal parenchymal lung disease with limited therapeutic options, with fibroblast-to-myofibroblast transdifferentiation and hyperproliferation playing a major role. Investigating ex vivo-cultured (myo)fibroblasts from human IPF lungs as well as fibroblasts isolated from bleomycin-challenged mice, Forkhead box O3 (FoxO3) transcription factor was found to be less expressed, hyperphosphorylated, and nuclear-excluded relative to non-diseased controls. Downregulation and/or hyperphosphorylation of FoxO3 was reproduced by exposure of normal human lung fibroblasts to various pro-fibrotic growth factors and cytokines (FCS, PDGF, IGF1, TGF-β1)...
December 7, 2017: EMBO Molecular Medicine
Shang Yao, Lavender Yuen-Nam Fan, Eric Wing-Fai Lam
The FOXO3 and FOXM1 forkhead box transcription factors, functioning downstream of the essential PI3K-Akt, Ras-ERK and JNK/p38MAPK signalling cascades, are crucial for cell proliferation, differentiation, cell survival, senescence, DNA damage repair and cell cycle control. The development of resistance to both conventional and newly emerged molecularly targeted therapies is a major challenge confronting current cancer treatment in the clinic. Intriguingly, the mechanisms of resistance to 'classical' cytotoxic chemotherapeutics and to molecularly targeted therapies are invariably linked to deregulated signalling through the FOXO3 and FOXM1 transcription factors...
November 24, 2017: Seminars in Cancer Biology
Gracielle Vieira Ramos, André Cruz, William Jose Silva, Andrei Rozanski, Igor Luchini Baptista, João Guilherme Silvestre, Anselmo Sigari Moriscot
AIM: Based upon a microarray assay, we have identified that triiodothyronine (T3) up-regulates MDM2 gene expression in the rat skeletal muscle. Since MDM2 protein is an E3 ligase, we hypothesized that this enzyme could play a role in T3 effects on skeletal muscle mass control. METHODS: To test our hypothesis, male rats (2 months old) were randomly assigned into the following groups: intact controls, treated with 20 physiological doses of T3 for 0.5, 1 and 7 days, or with 5, 20 and 50 physiological doses of T3 for 7 days...
November 27, 2017: Acta Physiologica
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"