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https://www.readbyqxmd.com/read/29779174/correction-to-impaired-bioenergetics-in-mutant-mitochondrial-dna-determines-cell-fate-during-seizure-like-activity
#1
Stjepana Kovac, Elisavet Preza, Henry Houlden, Matthew C Walker, Andrey Y Abramov
The original version of this article unfortunately contained mistake. The author's family name "Kov ac" was written with space thus this should be corrected to "Kovac".
May 19, 2018: Molecular Neurobiology
https://www.readbyqxmd.com/read/29778981/walking-the-line-the-fate-of-nanomaterials-at-biological-barriers
#2
REVIEW
Huan Meng, Wei Leong, Kam W Leong, Chunying Chen, Yuliang Zhao
Biological systems have developed an efficient multi-tiered defense system to block foreign substances such as engineered nanomaterials (NMs) from causing damage. In a pathological scenario, the disease itself may also pose additional barriers due to the imbalance between abnormal cells and their surrounding microenvironment, and NMs could behave similarly or differently to classic foreign substances, depending on their unique characteristics. Thus, understanding the mechanisms that govern the fate of NMs against these biological barriers, including the strategies that can be used to shift their fate between access and blockage, become key information for NMs design...
May 5, 2018: Biomaterials
https://www.readbyqxmd.com/read/29778888/rapid-phenotyping-of-cancer-stem-cells-using-multichannel-nanosensor-arrays
#3
Yingying Geng, Hira L Goel, Ngoc B Le, Tatsuyuki Yoshii, Rubul Mout, Gulen Y Tonga, John J Amante, Arthur M Mercurio, Vincent M Rotello
Cancer stem cells (CSCs) contribute to multidrug resistance, tumor recurrence and metastasis, making them prime therapeutic targets. Their ability to differentiate and lose stem cell properties makes them challenging to study. Currently, there is no simple assay that can capture and trace the dynamic phenotypic changes on the CSC surface. Here, we report rapid discrimination of breast CSCs from non-CSCs using a nanoparticle-fluorescent-protein based sensor. This nanosensor was employed to discriminate CSCs from non-CSCs, as well CSCs that had differentiated in vitro in two breast cancer models...
May 17, 2018: Nanomedicine: Nanotechnology, Biology, and Medicine
https://www.readbyqxmd.com/read/29778594/differetial-toxin-profiles-of-ciguatoxins-in-marine-organisms-chemistry-fate-and-global-distribution
#4
REVIEW
Lucía Soliño, Pedro Reis Costa
Ciguatoxins (CTXs) are fish metabolism products and a result of biotransformation of precursor gambiertoxins produced, in the first instance, by benthic dinoflagellates Gambierdiscus and Fukuyoa. Ciguatoxins are potent neurotoxins that selectively open voltage gated sodium channels in excitable cells causing the human food poisoning known as Ciguatera (CFP). Endemic from tropical areas in central Pacific and West Indian Ocean, and the Caribbean Sea, CTX may affects up to 500,000 people annually due to fish consumption...
May 17, 2018: Toxicon: Official Journal of the International Society on Toxinology
https://www.readbyqxmd.com/read/29778016/multiscale-reconstruction-of-a-synthetic-biomimetic-micro-niche-for-enhancing-and-monitoring-the-differentiation-of-stem-cells
#5
Rui Li, Jinming Li, Jianbin Xu, Dexter Siu Hong Wong, Xiaoyu Chen, Weihao Yuan, Liming Bian
Stem cells reside in a three-dimensional (3D) niche microenvironment, which provides specific cues, including cell-matrix interactions and soluble factors, that are essential to the differentiation of stem cells in vivo. Herein we demonstrate a general approach to the synthetic reconstruction of 3D biomimetic niche environment of stem cells by the multiscale combination of macroscopic porous hydrogels and a nanoscale upconversion nanoparticles (UCNP)-based nanocomplex. The porous biopolymeric hydrogels emulate the spongy bone microstructure and provide 3D environment conducive to the differentiation of seeded stem cells...
May 4, 2018: Biomaterials
https://www.readbyqxmd.com/read/29777574/factors-influencing-the-umbilical-cord-blood-stem-cell-industry-an-evolving-treatment-landscape
#6
REVIEW
Carla Dessels, Marco Alessandrini, Michael Sean Pepper
Hematopoietic stem cell transplantation (HSCT) is common practice today for life threatening malignant and non-malignant diseases of the blood and immune systems. Umbilical cord blood (UCB) is rich in hematopoietic stem cells (HSCs) and is an attractive alternative to harvesting HSCs from bone marrow or when mobilized into peripheral blood. One of the most appealing attributes of UCB is that it can be banked for future use and hence provides an off-the-shelf solution for patients in urgent need of a transplantation...
May 18, 2018: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/29777051/cd36-initiates-the-secretory-phenotype-during-the-establishment-of-cellular-senescence
#7
Mengyang Chong, Tao Yin, Rui Chen, Handan Xiang, Lifeng Yuan, Yi Ding, Christopher C Pan, Zhen Tang, Peter B Alexander, Yinjun Jia, Qi-Jing Li, Xiao-Fan Wang
Cellular senescence is a unique cell fate characterized by stable proliferative arrest and the extensive production and secretion of various inflammatory proteins, a phenomenon known as the senescence-associated secretory phenotype (SASP). The molecular mechanisms responsible for generating a SASP in response to senescent stimuli remain largely obscure. Here, using unbiased gene expression profiling, we discover that the scavenger receptor CD36 is rapidly upregulated in multiple cell types in response to replicative, oncogenic, and chemical senescent stimuli...
May 18, 2018: EMBO Reports
https://www.readbyqxmd.com/read/29775646/the-rna-binding-protein-ars2-supports-hematopoiesis-at-multiple-levels
#8
Seerat Elahi, Shawn M Egan, G Aaron Holling, Rachel L Kandefer, Michael J Nemeth, Scott H Olejniczak
Recent biochemical characterization of Arsenic resistance protein 2 (Ars2) has established it as central to determining the fate of nascent RNA polymerase II (RNAPII) transcripts. Through interactions with the nuclear 5'-7-methylguanosine (7mG) cap binding complex (CBC), Ars2 promotes co-transcriptional processing coupled with nuclear export or degradation of several classes of RNAPII transcripts, allowing for gene expression programs that facilitate rapid and sustained proliferation of immortalized cells in culture...
May 15, 2018: Experimental Hematology
https://www.readbyqxmd.com/read/29775615/extracellular-matrix-protein-dmp1-suppresses-osteogenic-differentiation-of-mesenchymal-stem-cells
#9
Shufan Zhang, Huixuan Wan, Peng Wang, Mengmeng Liu, Gongchen Li, Chunxue Zhang, Yao Sun
Mesenchymal Stem Cells (MSCs) are self-renewing and multipotent stem cells which was investigated for diverse clinical applications. However, complex mechanism of MSCs fate determination is still not fully disclosed. Extracellular matrix (ECM) proteins contribute to maintain MSCs stemness by providing extracellular microenvironment. Increasing evidences show that ECM proteins could also regulate the fate of MSCs directly. Dentin matrix protein 1 (DMP1) is an ECM protein enrich in bone tissue and terminal cells, which well-known in promoting osteoblasts and osteocytes maturation, and facilitate mineralization...
May 15, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29775245/subunits-of-the-dna-polymerase-alpha-primase-complex-promote-notch-mediated-proliferation-with-discrete-and-shared-functions-in-c-elegans-germline
#10
Dong Suk Yoon, Dong Seok Cha, Mohammad A Alfhili, Brett D Keiper, Myon-Hee Lee
Notch receptor signaling is a highly conserved cell communication system in most multicellular organisms and plays a critical role at several junctures in animal development. In C. elegans, GLP-1/Notch signaling is essential for both germline stem cell maintenance and germ cell proliferation during gonad development. Here, we show that subunits (POLA-1, DIV-1, PRI-1, and PRI-2) of the DNA polymerase alpha-primase complex are required for germ cell proliferation in response to GLP-1/Notch signaling in different tissues at different developmental stages...
May 18, 2018: FEBS Journal
https://www.readbyqxmd.com/read/29774393/developmental-origin-of-the-cardiac-conduction-system-insight-from-lineage-tracing
#11
Rajiv A Mohan, Bastiaan J Boukens, Vincent M Christoffels
The components of the cardiac conduction system (CCS) generate and propagate the electrical impulse that initiates cardiac contraction. These interconnected components share properties, such as automaticity, that set them apart from the working myocardium of the atria and ventricles. A variety of tools and approaches have been used to define the CCS lineages. These include genetic labeling of cells expressing lineage markers and fate mapping of dye labeled cells, which we will discuss in this review. We conclude that there is not a single CCS lineage, but instead early cell fate decisions segregate the lineages of the CCS components while they remain interconnected...
May 17, 2018: Pediatric Cardiology
https://www.readbyqxmd.com/read/29774214/the-expression-of-aqp1-is-modified-in-lung-of-patients-with-idiopathic-pulmonary-fibrosis-addressing-a-possible-new-target
#12
Ana Galán-Cobo, Elena Arellano-Orden, Rocío Sánchez Silva, José Luis López-Campos, César Gutiérrez Rivera, Lourdes Gómez Izquierdo, Nela Suárez-Luna, María Molina-Molina, José A Rodríguez Portal, Miriam Echevarría
Activation of the epithelial-mesenchymal transition process (EMT) by which alveolar cells in human lung tissue undergo differentiation giving rise to a mesenchymal phenotype (fibroblast/miofibroblasts) has been well recognized as a key element in the origin of idiopathic pulmonary fibrosis (IPF). Here we analyzed expression of AQP1 in lung biopsies of patients diagnosed with IPF, and compared it to biopsies derived from patients with diverse lung pneumonies, such as hypersensitivity pneumonitis, sarcoidosis or normal lungs...
2018: Frontiers in Molecular Biosciences
https://www.readbyqxmd.com/read/29773643/the-transcription-factor-bhlhe40-is-a-switch-of-inflammatory-versus-antiinflammatory-th1-cell-fate-determination
#13
Fang Yu, Suveena Sharma, Dragana Jankovic, Rama Krishna Gurram, Pan Su, Gangqing Hu, Rao Li, Sadiye Rieder, Keji Zhao, Bing Sun, Jinfang Zhu
Type 1 T helper (Th1) cells play a critical role in host defense against intracellular pathogens and in autoimmune diseases by producing a key inflammatory cytokine interferon (IFN)-γ; some Th1 cells can also be antiinflammatory through producing IL-10. However, the molecular switch for regulating the differentiation of inflammatory and antiinflammatory Th1 cells is still elusive. Here, we show that Bhlhe40 -deficient CD4 Th1 cells produced less IFN-γ but substantially more IL-10 than wild-type Th1 cells both in vitro and in vivo...
May 17, 2018: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/29772825/identification-and-characterization-of-the-wox-family-genes-in-five-solanaceae-species-reveal-their-conserved-roles-in-peptide-signaling
#14
Xiaoxu Li, Madiha Hamyat, Cheng Liu, Ahmad Salman, Xiaoming Gao, Cun Guo, Yuanying Wang, Yongfeng Guo
Members of the plant-specific WOX (WUSCHEL-related homeobox) transcription factor family have been reported to play important roles in peptide signaling that regulates stem cell maintenance and cell fate specification in various developmental processes. Even though remarkable advances have been made in studying WOX genes in Arabidopsis , little is known about this family in Solanaceae species. A total of 45 WOX members from five Solanaceae species were identified, including eight members from Solanum tuberosum , eight from Nicotiana tomentosiformis , 10 from Solanum lycopersicum , 10 from Nicotiana sylvestris and nine from Nicotiana tabacum ...
May 17, 2018: Genes
https://www.readbyqxmd.com/read/29772539/spheroids-of-stem-cells-as-endochondral-templates-for-improved-bone-engineering
#15
Leandra Santos Baptista, Gabriela Soares Kronemberger, Karina Ribeiro Silva, Jose Mauro Granjeiro
Osteodegenerative disease and bone fractures lead to bone damage or loss, requiring new bone formation to replace the damaged tissues. Classical 'top-down' tissue engineering relies on seeding cell suspensions into biomaterial scaffolds, and then guiding cell fate by growth factors. However, complex tissue fabrication using this approach has important limitations. 'Bottom-up' tissue engineering has the potential to overcome the drawbacks of the top-down approach, by using 'building blocks' of cell spheroids for tissue biofabrication without a scaffold...
June 1, 2018: Frontiers in Bioscience (Landmark Edition)
https://www.readbyqxmd.com/read/29772476/fate-of-nuclear-material-during-subsequent-steps-of-the-kinetin-induced-pcd-in-apical-parts-of-vicia-faba-ssp-minor-seedling-roots
#16
Andrzej Kaźmierczak, Kamila Soboska
In animals during apoptosis, the best examined type of programmed cell death (PCD), three main phases are distinguished: (i) specification (signaling), (ii) killing and (iii) execution one. It has bean postulated that plant PCD also involves three subsequent phases: (i) transmission of death signals to cells (signaling), (ii) initiation of killing processes and (iii) destruction of cells. One of the most important hallmarks of animal and plant PCD are those regarding nucleus, not thoroughly studied in plants so far...
April 30, 2018: Micron: the International Research and Review Journal for Microscopy
https://www.readbyqxmd.com/read/29771958/cooperation-of-bmp-and-ihh-signaling-in-interdigital-cell-fate-determination
#17
Arunima Murgai, Sara Altmeyer, Stephanie Wiegand, Przemko Tylzanowski, Sigmar Stricker
The elaborate anatomy of hands and feet is shaped by coordinated formation of digits and regression of the interdigital mesenchyme (IM). A failure of this process causes persistence of interdigital webbing and consequently cutaneous syndactyly. Bone morphogenetic proteins (BMPs) are key inductive factors for interdigital cell death (ICD) in vivo. NOGGIN (NOG) is a major BMP antagonist that can interfere with BMP-induced ICD when applied exogenously, but its in vivo role in this process is unknown. We investigated the physiological role of NOG in ICD and found that Noggin null mice display cutaneous syndactyly and impaired interdigital mesenchyme specification...
2018: PloS One
https://www.readbyqxmd.com/read/29771299/at-the-crossroads-of-fate-somatic-cell-lineage-specification-in-the-fetal-gonad
#18
Emmi Rotgers, Anne Jørgensen, Humphrey Hung-Chang Yao
The reproductive endocrine systems are vastly different between male and female. This sexual dimorphism of endocrine milieu originates from sex-specific differentiation of the somatic cells in the gonads during fetal life. The majority of gonadal somatic cells arise from the adrenogonadal primordium. After separation of the adrenal and gonadal primordia, the gonadal somatic cells initiate sex-specific differentiation during gonadal sex determination with the specification of the supporting cell lineages: Sertoli cells in the testis vs...
May 15, 2018: Endocrine Reviews
https://www.readbyqxmd.com/read/29769743/tigar-knockdown-enhanced-the-anticancer-effect-of-aescin-via-regulating-autophagy-and-apoptosis-in-colorectal-cancer-cells
#19
Bin Li, Zhong Wang, Jia-Ming Xie, Gang Wang, Li-Qiang Qian, Xue-Mei Guan, Xue-Ping Shen, Zheng-Hong Qin, Gen-Hai Shen, Xiao-Qiang Li, Quan-Gen Gao
Our previous study showed that TP53-induced glycolysis and apoptosis regulator (TIGAR) regulated ROS, autophagy, and apoptosis in response to hypoxia and chemotherapeutic drugs. Aescin, a triterpene saponin, exerts anticancer effects and increases ROS levels. The ROS is a key upstream signaling to activate autophagy. Whether there is a crosstalk between TIGAR and aescin in regulating ROS, autophagy, and apoptosis is unknown. In this study, we found that aescin inhibited cell viability and colony formation, and induced DNA damage, cell cycle arrest, and apoptosis in cancer cell lines HCT-116 and HCT-8 cells...
May 16, 2018: Acta Pharmacologica Sinica
https://www.readbyqxmd.com/read/29769401/microinjection-of-mrnas-and-oligonucleotides
#20
Sally A Moody
Microinjecting lineage tracers into a single blastomere in the normal, intact embryo identifies the repertoire of cell types derived from it. In order to reveal the full developmental potential of that blastomere or identify the mechanisms by which its fate is determined, one needs to modify its gene expression under controlled experimental conditions. One method by which this is easily accomplished in Xenopus is by microinjecting synthetic mRNAs or antisense oligonucleotides into an identified blastomere to target altered gene expression specifically to its lineage...
May 16, 2018: Cold Spring Harbor Protocols
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