keyword
MENU ▼
Read by QxMD icon Read
search

Renew

keyword
https://www.readbyqxmd.com/read/28441772/structural-and-biochemical-properties-of-novel-self-cleaving-ribozymes
#1
REVIEW
Ki-Young Lee, Bong-Jin Lee
Fourteen well-defined ribozyme classes have been identified to date, among which nine are site-specific self-cleaving ribozymes. Very recently, small self-cleaving ribozymes have attracted renewed interest in their structure, biochemistry, and biological function since the discovery, during the last three years, of four novel ribozymes, termed twister, twister sister, pistol, and hatchet. In this review, we mainly address the structure, biochemistry, and catalytic mechanism of the novel ribozymes. They are characterized by distinct active site architectures and divergent, but similar, biochemical properties...
April 24, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28441530/aubergine-controls-germline-stem-cell-self-renewal-and-progeny-differentiation-via-distinct-mechanisms
#2
Xing Ma, Xiujuan Zhu, Yingying Han, Benjamin Story, Trieu Do, Xiaoqing Song, Su Wang, Ying Zhang, Marco Blanchette, Madelaine Gogol, Kate Hall, Allison Peak, Perera Anoja, Ting Xie
Piwi family protein Aubergine (Aub) maintains genome integrity in late germ cells of the Drosophila ovary through Piwi-associated RNA-mediated repression of transposon activities. Although it is highly expressed in germline stem cells (GSCs) and early progeny, it remains unclear whether it plays any roles in early GSC lineage development. Here we report that Aub promotes GSC self-renewal and GSC progeny differentiation. RNA-iCLIP results show that Aub binds the mRNAs encoding self-renewal and differentiation factors in cultured GSCs...
April 24, 2017: Developmental Cell
https://www.readbyqxmd.com/read/28441005/plasma-activated-copper-nanocube-catalysts-for-efficient-carbon-dioxide-electroreduction-to-hydrocarbons-and-alcohols
#3
Dunfeng Gao, Ioannis Zegkinoglou, Nuria J Divins, Fabian Scholten, Ilya Sinev, Philipp Grosse, Beatriz Roldan Cuenya
Carbon dioxide electroreduction to chemicals and fuels powered by renewable energy sources is considered a promising path to address climate change and energy storage needs. We have developed highly active and selective copper (Cu) nanocube catalysts with tunable Cu(100) facet and oxygen/chlorine ion content by low-pressure plasma pre-treatments. These catalysts display lower overpotentials and higher ethylene, ethanol and n-propanol selectivity, resulting in a maximum Faradaic efficiency (FE) of ~73% for C2 and C3 products...
April 25, 2017: ACS Nano
https://www.readbyqxmd.com/read/28440623/biomimetic-superhydrophobic-bio-based-polyurethane-coated-fertilizer-with-atmosphere-outerwear
#4
Jiazhuo Xie, Yuechao Yang, Bin Gao, Yongshan Wan, Yuncong C Li, Jing Xu, Qinghua Zhao
The development of efficient bio-based controlled-release fertilizers has captured much research attention because of the environmental concerns and food scarcity problems. In this work, a biomimetic superhydrophobic bio-based polyurethane-coated fertilizer (SBPF) was successfully fabricated by increasing surface roughness and reducing surface energy of polyurethane (PU) coating. The green PU coating was synthesized from low-cost, biodegradable, and renewable cottonseed oil. The nutrient release longevity of SBPF revealed 2-fold enhancement compared with the normal bio-based PU-coated fertilizer (BPF)...
April 25, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28440453/scrg1-suppresses-lps-induced-ccl22-production-through-erk1-2-activation-in-mouse-macrophage-raw264-7-cells
#5
Manabu Inoue, Junko Yamada, Emiko Aomatsu-Kikuchi, Kazuro Satoh, Hisatomo Kondo, Akira Ishisaki, Naoyuki Chosa
Recently, we identified the scrapie responsive gene 1 (SCRG1) secreted from mesenchymal stem cells (MSCs) and its receptor bone marrow stromal cell antigen 1 (BST1) as positive regulators of stem cell qualities such as self‑renewal, migration abilities, and osteogenic differentiation potential. Here, we examined the effect of the paracrine activity of SCRG1 in macrophages. The mouse macrophage‑like cell line Raw264.7 expressed BST1/β1 or BST1/β2 integrin as possible SCRG1 receptors. Unexpectedly, recombinant SCRG1 did not enhance cell proliferation, migration, or adhesion in these macrophages...
April 20, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28440445/mir%C3%A2-196a%C3%A2-5p-modulates-gastric-cancer-stem-cell-characteristics-by-targeting-smad4
#6
Yunzhi Pan, Xiong Shu, Lichao Sun, Long Yu, Lixin Sun, Zhihua Yang, Yuliang Ran
Cancer stem cells (CSCs) are undifferentiated cancer cells with a high tumorigenic activity, the ability to undergo self-renewal, and a multilineage differentiation potential. Clinical evidence suggests that CSCs in a tumor mass are the cellular determinants to promote cancer invasion and metastasis. MicroRNAs (miRNAs) have emerged as important modulators of cancer stem cell characteristics. Unveiling the candidate miRNAs that regulate CSCs may provide novel therapeutic targets against cancer. We analyzed the miRNA expression profiles regulating the cancer stem-like cell characteristics in gastric cancer...
April 19, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28440295/kdm3-epigenetically-controls-tumorigenic-potentials-of-human-colorectal-cancer-stem-cells-through-wnt-%C3%AE-catenin-signalling
#7
Jiong Li, Bo Yu, Peng Deng, Yingduan Cheng, Yongxin Yu, Kareena Kevork, Sivakumar Ramadoss, Xiangming Ding, Xinmin Li, Cun-Yu Wang
Human colorectal cancer stem cells (CSCs) are tumour initiating cells that can self-renew and are highly tumorigenic and chemoresistant. While genetic mutations associated with human colorectal cancer development are well-known, little is known about how and whether epigenetic factors specifically contribute to the functional properties of human colorectal CSCs. Here we report that the KDM3 family of histone demethylases plays an important role in tumorigenic potential and survival of human colorectal CSCs by epigenetically activating Wnt target gene transcription...
April 25, 2017: Nature Communications
https://www.readbyqxmd.com/read/28439998/the-effects-of-chosen-plant-extracts-and-compounds-on-mesenchymal-stem-cells-a-bridge-between-molecular-nutrition-and-regenerative-medicine-concise-review
#8
REVIEW
Katarzyna Kornicka, Ievgeniia Kocherova, Krzysztof Marycz
Mesenchymal stem cells (MSC) stand as a promising tool in regenerative medicine because of their high therapeutic potential in treatment of degenerative, metabolic and other types of diseases. The cellular therapies involving MSCs include their isolation mainly from the bone marrow, adipose tissue or umbilical cord and in vitro expansion for further autologous or allogeneic transplantation. Recent studies revealed, that bioactive compounds, naturally occurring in seaweeds, herbs, fruits and vegetables, possess the ability to modulate self-renewal and differentiation potential of adult stem cells, targeting a broad range of intracellular signal transduction pathways...
April 25, 2017: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/28439592/one-pot-photoassisted-synthesis-in-situ-photocatalytic-testing-for-hydrogen-generation-and-the-mechanism-of-binary-nitrogen-and-copper-promoted-titanium-dioxide
#9
Sean Taylor, Mihir Mehta, Dmitri Barbash, Alexander Samokhvalov
For the sustainable production of hydrogen by photocatalysis, the use of renewable resources such as water, organic compounds from plant biomass and earth abundant metal promoters is desired. We herein describe the previously not reported "one-pot" photoassisted synthesis of a binary metal-nitrogen promoted Cu(0)-N-TiO2 photocatalyst from a N-TiO2 precursor by photodeposition of copper directly in the photocatalytic suspension. The N-TiO2 contains nanocrystalline anatase as found by XRD and Raman spectroscopy...
April 25, 2017: Photochemical & Photobiological Sciences
https://www.readbyqxmd.com/read/28439570/epigenomics-of-human-cd8-t-cell-differentiation-and-aging
#10
David M Moskowitz, David W Zhang, Bin Hu, Sabine Le Saux, Rolando E Yanes, Zhongde Ye, Jason D Buenrostro, Cornelia M Weyand, William J Greenleaf, Jörg J Goronzy
The efficacy of the adaptive immune response declines dramatically with age, but the cell-intrinsic mechanisms driving immune aging in humans remain poorly understood. Immune aging is characterized by a loss of self-renewing naïve cells and the accumulation of differentiated but dysfunctional cells within the CD8 T cell compartment. Using ATAC-seq, we inferred the transcription factor binding activities correlated with naive and central and effector memory CD8 T cell states in young adults. Integrating our results with RNA-seq, we identified transcription networks associated with CD8 T cell differentiation, with prominent roles implicated for BATF, ETS1, Eomes, and Sp1...
February 2017: Science Immunology
https://www.readbyqxmd.com/read/28439295/production-of-high-concentration-n-caproic-acid-from-lactate-through-fermentation-using-a-newly-isolated-ruminococcaceae-bacterium-cpb6
#11
Xiaoyu Zhu, Yan Zhou, Yi Wang, Tingting Wu, Xiangzhen Li, Daping Li, Yong Tao
BACKGROUND: n-Caproic acid (CA), as a medium-chain carboxylic acid, is a valuable chemical feedstock for various industrial applications. The fermentative production of CA from renewable carbon sources has attracted a lot of attentions. Lactate is a significant intermediate waste in the anaerobic breakdown of carbohydrates that comprise 18-70% of the chemical oxygen demand (COD) in municipal and some industrial wastewaters. Recently, researchers (including our own group) reported the CA production using lactate as electron donor with newly identified microbiome systems...
2017: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/28438048/the-impact-of-infant-well-child-care-compliance-and-social-risks-on-emergency-department-utilization
#12
Nikki R Lawson, Melissa D Klein, Nicholas J Ollberding, Victoria Wurster Ovalle, Andrew F Beck
Deployment of medical and social services at well-child visits promotes child health. A retrospective review of the electronic health record was conducted for infants presenting for their "newborn" visit over a 2-year period at an urban, academic primary care center. Primary outcomes were time to first emergency department (ED) visit, number of ED visits (emergent or nonemergent), and number of nonemergent ED visits by 2 years of life. Records from 212 consecutive newborns were evaluated-59.9% were black/African American and 84...
April 1, 2017: Clinical Pediatrics
https://www.readbyqxmd.com/read/28436991/crb3-downregulation-confers-breast-cancer-stem-cell-traits-through-taz-%C3%AE-catenin
#13
P Li, Y Wang, X Mao, Y Jiang, J Liu, J Li, J Wang, R Wang, J She, J Zhang, J Yang, Y Liu, P Liu
The cancer stem cell (CSC) theory depicts a special population within the cancer mass that self-renew and sustain the cancer, even if the other cells were eliminated by therapies. How CSCs acquire these unique traits is still unclear. Crumbs homolog 3 (CRB3), a member of the CRB polarity complex, has been reported to act as a tumor suppressor. Here, we detected significantly lower or negative CRB3 expression in human breast cancer tissues. Knockdown of CRB3 generated non-tumorigenic, immortalized breast epithelial cell line MCF 10A with CSC properties...
April 24, 2017: Oncogenesis
https://www.readbyqxmd.com/read/28436525/graphitic-c3n4-nanosheets-synergistic-effects-of-hydrogenation-and-n-n-junctions-for-enhanced-photocatalytic-activities
#14
Minjie Zhou, Zhaohui Hou, Xiaobo Chen
The increasing concern about environmental pollution and fossil fuel energies have urged researchers to seek renewable energy sources and methods for pollutant decomposition. Photocatalysis seems to be one of the most promising approaches, which uses natural sunlight to produce hydrogen from water and removes organic pollutants from the environment. Among the various photocatalysts, graphitic carbon nitride (g-C3N4) has recently attracted much attention as a metal-free photocatalyst; however, it did not give a satisfactory performance...
April 24, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28436495/electrochemistry-mass-spectrometry-for-mechanism-study-of-oxygen-reduction-at-water-oil-interface
#15
Shu-Juan Liu, Zheng-Wei Yu, Liang Qiao, Bao-Hong Liu
Electrochemistry methods have been widely employed in the development of renewable energy, and involved in various processes, e.g. water splitting and oxygen reduction. Remarkable progress notwithstanding, there are still many challenges in further optimization of catalysts to achieve high performance. For this purpose, an in-depth understanding of reaction mechanism is needed. In this study, an electrochemistry-mass spectrometry method based on a Y-shaped dual-channel microchip as electrochemical cell and ionization device was demonstrated...
April 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28436144/unacylated-ghrelin-enhances-satellite-cell-function-and-relieves-the-dystrophic-phenotype-in-duchenne-muscular-dystrophy-mdx-model
#16
Simone Reano, Elia Angelino, Michele Ferrara, Valeria Malacarne, Hana Sustova, Omar Sabry, Emanuela Agosti, Sara Clerici, Giulia Ruozi, Lorena Zentilin, Flavia Prodam, Stefano Geuna, Mauro Giacca, Andrea Graziani, Nicoletta Filigheddu
Muscle regeneration depends on satellite cells, quiescent precursors that, in consequence of injury or in pathological states such as muscular dystrophies, activate, proliferate, and differentiate to repair the damaged tissue. A subset of satellite cells undergoes self-renewal, thus preserving the satellite cell pool and its regenerative potential. Unacylated ghrelin (UnAG) is a circulating hormone that protects muscle from atrophy, promotes myoblast differentiation, and enhances ischemia-induced muscle regeneration...
April 24, 2017: Stem Cells
https://www.readbyqxmd.com/read/28436141/microrna-10b-regulates-the-renewal-of-spermatogonial-stem-cells-through-kruppel-like-factor-4
#17
Jiang Li, Xiang Liu, Xiaopeng Hu, Geng G Tian, Wenzhi Ma, Xiuying Pei, Yanrong Wang, Ji Wu
MicroRNAs (miRs) are functionally important in spermatogenesis, which is the self-renewal or differentiation of spermatogonial stem cells (SSCs). Here, we report a novel role for miR-10b in regulating the self-renewal of mouse SSCs. We showed that miR-10b was highly expressed in mouse SSCs in vitro and enhanced SSC proliferation. Knockdown of miR-10b significantly increased the apoptosis of SSCs compared with controls. Kruppel-like factor 4 was found to be a target gene of miR-10b in the enhancement of SSC proliferation...
April 2017: Cell Biochemistry and Function
https://www.readbyqxmd.com/read/28436137/insights-into-in-vitro-spermatogenesis-in-mammals-past-present-future
#18
REVIEW
Amir Fattahi, Zeinab Latifi, Tohid Ghasemnejad, Hamid Reza Nejabati, Mohammad Nouri
Considering the self-renewal and differentiation ability of pluripotent stem cells, some studies have pointed out the possibility of stem cell-derived sperm production. Most studies that test this hypothesis have been conducted on rodents, with some promising results; however, studies on humans are progressing slowly, and have encountered technical and ethical hurdles. Established methods to differentiate stem cells - including embryoid bodies, co-culturing, and various feeder cells - may provide a niche that is similar to in vivo conditions and resolve epigenetic abnormalities, but a gonadal-like three-dimensional structure is still required to produce germ cells with the correct imprinting...
April 24, 2017: Molecular Reproduction and Development
https://www.readbyqxmd.com/read/28436127/tip110-deletion-impaired-embryonic-and-stem-cell-development-involving-down-regulation-of-stem-cell-factors-nanog-oct4-and-sox2
#19
Amanda Whitmill, Ying Liu, Khalid Amine Timani, Yinghua Niu, Johnny J He
HIV-1 Tat-interacting protein of 110 kDa, Tip110, plays important roles in multiple biological processes. In this study, we aimed to characterize the function of Tip110 in embryonic development. Transgenic mice lacking expression of a functional Tip110 gene (Tip110(-/-) ) died post-implantation, and Tip110(-/-) embryos exhibited developmental arrest between 8.5 and 9.5 days post coitum. However, in vitro cultures of Tip110(-/-) embryos showed that Tip110 loss did not impair embryo growth from the zygote to the blastocyst...
April 24, 2017: Stem Cells
https://www.readbyqxmd.com/read/28435777/recent-progress-in-metal-organic-frameworks-for-applications-in-electrocatalytic-and-photocatalytic-water-splitting
#20
REVIEW
Wei Wang, Xiaomin Xu, Wei Zhou, Zongping Shao
The development of clean and renewable energy materials as alternatives to fossil fuels is foreseen as a potential solution to the crucial problems of environmental pollution and energy shortages. Hydrogen is an ideal energy material for the future, and water splitting using solar/electrical energy is one way to generate hydrogen. Metal-organic frameworks (MOFs) are a class of porous materials with unique properties that have received rapidly growing attention in recent years for applications in water splitting due to their remarkable design flexibility, ultra-large surface-to-volume ratios and tunable pore channels...
April 2017: Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
keyword
keyword
21799
1
2
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"