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https://www.readbyqxmd.com/read/29670009/pursuing-intracellular-pathogens-with-hyaluronan-from-a-pro-infection-polymer-to-a-biomaterial-for-trojan-horse-systems
#1
REVIEW
Elita Montanari, Chiara Di Meo, Angela Oates, Tommasina Coviello, Pietro Matricardi
Hyaluronan (HA) is among the most important bioactive polymers in mammals, playing a key role in a number of biological functions. In the last decades, it has been increasingly studied as a biomaterial for drug delivery systems, thanks to its physico-chemical features and ability to target and enter certain cells. The most important receptor of HA is ‘Cluster of Differentiation 44’ (CD44), a cell surface glycoprotein over-expressed by a number of cancers and heavily involved in HA endocytosis...
April 18, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29628283/weathering-the-storm-a-review-of-pre-pregnancy-stress-and-risk-of-spontaneous-abortion
#2
REVIEW
Tyralynn Frazier, Carol J Rowland Hogue, Elizabeth A Bonney, Kathryn M Yount, Brad D Pearce
The Weathering Effect is a theory that links stress exposure, over the life-course, with racial disparities in reproductive outcomes, through the effects of social adversity on a woman's body. The concept of maternal "weathering" captures cumulative somatic and psychological adversities that can exacerbate the effects of aging. Much of the evidence for weathering comes from observational studies linking self-report measures with reproductive outcomes. The purpose of this review is to explore biological mechanisms that underlie these observations...
March 1, 2018: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/29573497/inverse-association-for-diagnosis-of-alzheimer-s-disease-subsequent-to-both-melanoma-and-non-melanoma-skin-cancers-in-a-large-urban-single-center-midwestern-u-s-patient-population
#3
Erin Ibler, Gary Tran, Kelsey A Orrell, Linda Serrano, Sara Majewski, Kimberly A Sable, Rebecca Thiede, Anne E Laumann, Dennis P West, Beatrice Nardone
BACKGROUND: Although literature demonstrates a decreased risk of Alzheimer's disease (AD) in individuals with various cancers, including squamous cell cancers (SCC) and basal cell cancers (BCC) comprising non-melanoma skin cancers (NMSC), there is a paucity of literature to substantiate an association between malignant melanoma (MM) and AD. OBJECTIVE: The aim of this study is to determine if an association exists between MM and AD as well as for NMSC and AD. METHODS: A large urban, Midwestern, U...
March 24, 2018: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/29565057/nanoparticle-wrapping-at-small-non-spherical-vesicles-curvatures-at-play
#4
Qingfen Yu, Sameh Othman, Sabyasachi Dasgupta, Thorsten Auth, Gerhard Gompper
Nanoparticles in biological systems encounter lipid-bilayer membranes as barriers. They interact with plasma membranes, membranous organelles, such as the endoplasmic reticulum and the Golgi apparatus, the nucleus, and intracellular and extracellular vesicles, such as autophagosomes, lysosomes, and exosomes. Extracellular vesicles have recently attracted particular attention, as they are involved in the transmission of biological signals and as regulators for biological processes. For example, exosomes, small vesicles containing proteins, mRNA, and miRNA, that are released by cells into the extracellular environment, have been suggested to participate in tumor metastasis...
March 22, 2018: Nanoscale
https://www.readbyqxmd.com/read/29414712/diffusion-as-a-ruler-modeling-kinesin-diffusion-as%C3%A2-a%C3%A2-length-sensor-for-intraflagellar-transport
#5
Nathan L Hendel, Matthew Thomson, Wallace F Marshall
An important question in cell biology is whether cells are able to measure size, either whole cell size or organelle size. Perhaps cells have an internal chemical representation of size that can be used to precisely regulate growth, or perhaps size is just an accident that emerges due to constraint of nutrients. The eukaryotic flagellum is an ideal model for studying size sensing and control because its linear geometry makes it essentially one-dimensional, greatly simplifying mathematical modeling. The assembly of flagella is regulated by intraflagellar transport (IFT), in which kinesin motors carry cargo adaptors for flagellar proteins along the flagellum and then deposit them at the tip, lengthening the flagellum...
February 6, 2018: Biophysical Journal
https://www.readbyqxmd.com/read/29370393/the-impact-of-art-on-union-dissolution-a-register-based-study-in-denmark-1994-2010
#6
Mariana Veloso Martins, Ditte Vassard, Charlotte Ørsted Hougaard, Lone Schmidt
STUDY QUESTION: Are couples initiating ART treatment at higher risk for future union dissolution compared to other couples? SUMMARY ANSWER: There is no effect of ART treatments in future marital dissolution over a period of 16 years when adjusting for all confounders. WHAT IS KNOWN ALREADY: Findings regarding marital stability and infertility treatments have been sparse and controversial. While there is data showing higher divorce rates among women who go through infertility treatments, there is also some evidence of this experience bringing couples closer by forcing them to communicate more and to deal with the surrounding stigma...
January 23, 2018: Human Reproduction
https://www.readbyqxmd.com/read/29356431/precision-fluorescent-labeling-of-an-adeno-associated-virus-vector-to-monitor-the-viral-infection-pathway
#7
Chuanling Zhang, Xueying Zhou, Tianzhuo Yao, Zhenyu Tian, Demin Zhou
Adeno-associated virus 2 (AAV2) is a common vehicle for the delivery of a variety of therapeutic genes. A better understanding of the process of infection of AAV2 will advance our knowledge of AAV2 biology and allow for the optimization of AAV2 capsids with favorable transduction profiles. However, the precise fluorescent labeling of an AAV2 vector for probing virus tracking without affecting the nature of the virus remains a challenge. In this study, a lab-synthesized azide-moieties on the viral capsid at modifiable sites is precisely displayed...
April 2018: Biotechnology Journal
https://www.readbyqxmd.com/read/29342140/atomic-structure-of-the-eukaryotic-intramembrane-ras-methyltransferase-icmt
#8
Melinda M Diver, Leanne Pedi, Akiko Koide, Shohei Koide, Stephen B Long
The maturation of RAS GTPases and approximately 200 other cellular CAAX proteins involves three enzymatic steps: addition of a farnesyl or geranylgeranyl prenyl lipid to the cysteine (C) in the C-terminal CAAX motif, proteolytic cleavage of the AAX residues and methylation of the exposed prenylcysteine residue at its terminal carboxylate. This final step is catalysed by isoprenylcysteine carboxyl methyltransferase (ICMT), a eukaryote-specific integral membrane enzyme that resides in the endoplasmic reticulum...
January 17, 2018: Nature
https://www.readbyqxmd.com/read/29301848/physiologic-pathologic-and-therapeutic-paracrine-modulation-of-cardiac-excitation-contraction-coupling
#9
REVIEW
Joshua Mayourian, Delaine K Ceholski, David M Gonzalez, Timothy J Cashman, Susmita Sahoo, Roger J Hajjar, Kevin D Costa
Cardiac excitation-contraction coupling (ECC) is the orchestrated process of initial myocyte electrical excitation, which leads to calcium entry, intracellular trafficking, and subsequent sarcomere shortening and myofibrillar contraction. Neurohumoral β-adrenergic signaling is a well-established mediator of ECC; other signaling mechanisms, such as paracrine signaling, have also demonstrated significant impact on ECC but are less well understood. For example, resident heart endothelial cells are well-known physiological paracrine modulators of cardiac myocyte ECC mainly via NO and endothelin-1...
January 5, 2018: Circulation Research
https://www.readbyqxmd.com/read/29278883/microrna-152-inhibits-tumor-cell-growth-while-inducing-apoptosis-via-the-transcriptional-repression-of-cathepsin-l-in-gastrointestinal-stromal-tumor
#10
Hong-Jie Lu, Jing Yan, Pei-Ying Jin, Gui-Hong Zheng, Su-Ming Qin, Dong-Mei Wu, Jun Lu, Yuan-Lin Zheng
OBJECTIVE: MicroRNAs are widely thought to play a regulatory role in gene expression. Although the more unique microRNA expression profiles have been reported in several tumors, there remains a scarcity of knowledge in relation to microRNA expression profiles in GISTs. During this study, through the alteration in the expression of microRNA-152 (miR-152) in gastrointestinal stromal tumor (GIST) cells, we subsequently evaluated its ability to influence the processes associated with cancer, including proliferation, migration, invasion, and apoptosis, as well as the associated mechanisms...
February 14, 2018: Cancer Biomarkers: Section A of Disease Markers
https://www.readbyqxmd.com/read/29273087/comparison-of-multiple-transcriptomes-exposes-unified-and-divergent-features-of-quiescent-and-activated-skeletal-muscle-stem-cells
#11
Natalia Pietrosemoli, Sébastien Mella, Siham Yennek, Meryem B Baghdadi, Hiroshi Sakai, Ramkumar Sambasivan, Francesca Pala, Daniela Di Girolamo, Shahragim Tajbakhsh
BACKGROUND: Skeletal muscle satellite (stem) cells are quiescent in adult mice and can undergo multiple rounds of proliferation and self-renewal following muscle injury. Several labs have profiled transcripts of myogenic cells during the developmental and adult myogenesis with the aim of identifying quiescent markers. Here, we focused on the quiescent cell state and generated new transcriptome profiles that include subfractionations of adult satellite cell populations, and an artificially induced prenatal quiescent state, to identify core signatures for quiescent and proliferating...
December 22, 2017: Skeletal Muscle
https://www.readbyqxmd.com/read/29245494/an-updated-checklist-of-echinoderms-from-indian-waters
#12
Vijay Kumar Deepak Samuel, Pandian Krishnan, Chemmencheri Ramakrishnan Sreeraj, Kanagaraj Chamundeeswari, Chermapandi Parthiban, Veeramuthu Sekar, Shesdev Patro, Raju Saravanan, Kottarathil Rajendran Abhilash, Purvaja Ramachandran, Ramachandran Ramesh
Species checklists enlist the species available within the defined geographical region and thus serve as essential input for developing conservation and management strategies. The fields of conservation biology and ecology confront the challenge of inflated biodiversity, attributed to non-recognition of taxonomic inconsistencies such as synonyms, alternate representation, emendations etc. Critical review of the checklists and distributional records of Phylum Echinodermata from Indian waters and subsequent validation of species names with World Register of Marine Species (WoRMS) database, revealed that the current literature included 236 incorrect entries comprising of 162 synonyms, 15 emendations, 5 nomina dubia, 1 nomen nudum, 40 species under alternate representation, 9 species with author misnomer, 1 subspecies and 1 unaccepted...
November 27, 2017: Zootaxa
https://www.readbyqxmd.com/read/29115333/an-apolipoprotein-enriched-biomolecular-corona-switches-the-cellular-uptake-mechanism-and-trafficking-pathway-of-lipid-nanoparticles
#13
L Digiacomo, F Cardarelli, D Pozzi, S Palchetti, M A Digman, E Gratton, A L Capriotti, M Mahmoudi, G Caracciolo
Following exposure to biological milieus (e.g. after systemic administration), nanoparticles (NPs) get covered by an outer biomolecular corona (BC) that defines many of their biological outcomes, such as the elicited immune response, biodistribution, and targeting abilities. In spite of this, the role of BC in regulating the cellular uptake and the subcellular trafficking properties of NPs has remained elusive. Here, we tackle this issue by employing multicomponent (MC) lipid NPs, human plasma (HP) and HeLa cells as models for nanoformulations, biological fluids, and target cells, respectively...
November 16, 2017: Nanoscale
https://www.readbyqxmd.com/read/29097153/finding-myod-and-lessons-learned-along-the-way
#14
REVIEW
Andrew B Lassar
In 1987, Robert Davis, Hal Weintraub and I reported the identification of MyoD, a transcription factor that could reprogram fibroblasts into skeletal muscle cells. In this recollection, I both summarize the prior work of Helen Blau, Woody Wright, Peter Jones and Charlie Emerson that inspired my entry into this field, and the subsequent events that led to finding MyoD. Lastly, I highlight some of the principles in developmental biology that have emerged during the past 30 years, which are particularly relevant to skeletal muscle biology...
December 2017: Seminars in Cell & Developmental Biology
https://www.readbyqxmd.com/read/29095099/an-overview-of-biosimilars-and-non-biologic-complex-drugs-in-europe-the-united-states-and-canada-and-their-relevance-to-multiple-sclerosis
#15
Sophia Gran-Ruaz, Arvind Mani, Sherry O'Quinn
The advent of biological medicines has significantly transformed the landscapes of many disease spaces and improved the lives of millions around the world. However, the structural complexity and sensitivity of such products result in a high price tag, adding to already financially strained healthcare systems. As these and other expensive complex drugs lose market exclusivity, stakeholders eagerly await the arrival of lower cost alternatives, such as biosimilars and subsequent entry non-biological complex drugs (NBCDs)...
November 1, 2017: Multiple Sclerosis: Clinical and Laboratory Research
https://www.readbyqxmd.com/read/29033326/genetic-discontinuity-between-the-maritime-archaic-and-beothuk-populations-in-newfoundland-canada
#16
Ana T Duggan, Alison J T Harris, Stephanie Marciniak, Ingeborg Marshall, Melanie Kuch, Andrew Kitchen, Gabriel Renaud, John Southon, Ben Fuller, Janet Young, Stuart Fiedel, G Brian Golding, Vaughan Grimes, Hendrik Poinar
Situated at the furthest northeastern edge of Canada, the island of Newfoundland (approximately 110,000 km(2)) and Labrador (approximately 295,000 km(2)) today constitute a province characterized by abundant natural resources but low population density. Both landmasses were covered by the Laurentide ice sheet during the Last Glacial Maximum (18,000 years before present [YBP]); after the glacier retreated, ice patches remained on the island until ca. 9,000 calibrated (cal) YBP [1]. Nevertheless, indigenous peoples, whose ancestors had trekked some 5,000 km from the west coast, arrived approximately 10,000 cal YBP in Labrador and ca...
October 23, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28956762/transcriptome-analysis-of-the-spodoptera-frugiperda-ascovirus-in-vivo-provides-insights-into-how-its-apoptosis-inhibitors-and-caspase-promote-increased-synthesis-of-viral-vesicles-and-virion-progeny
#17
Heba Zaghloul, Robert Hice, Peter Arensburger, Brian A Federici
Ascoviruses are ds DNA viruses that attack caterpillars and differ from all other viruses by inducing nuclear lysis followed by cleavage of host cells into numerous anucleate vesicles in which virus replication continues as these grow in the blood. Ascoviruses are also unusual in that most encode apoptosis inhibitors and caspase or caspase-like proteins. A robust cell line to study the novel molecular biology of ascovirus replication in vitro is lacking. Therefore, we used strand-specific RNA-Seq to study transcription in vivo in third instars of Spodoptera frugiperda infected with the Spodoptera frugiperda ascovirus, a member of the type species, Spodoptera frugiperda ascovirus (SfAV-1a), sampling transcripts at different time points after infection...
September 27, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28890653/complete-mitochondrial-genomes-of-the-cherskii-s-sculpin-cottus-czerskii-and-siberian-taimen-hucho-taimen-reveal-genbank-entry-errors-incorrect-species-identification-and-recombinant-mitochondrial-genome
#18
Evgeniy S Balakirev, Pavel A Saveliev, Francisco J Ayala
The complete mitochondrial (mt) genome is sequenced in 2 individuals of the Cherskii's sculpin Cottus czerskii. A surprisingly high level of sequence divergence (10.3%) has been detected between the 2 genomes of C czerskii studied here and the GenBank mt genome of C czerskii (KJ956027). At the same time, a surprisingly low level of divergence (1.4%) has been detected between the GenBank C czerskii (KJ956027) and the Amur sculpin Cottus szanaga (KX762049, KX762050). We argue that the observed discrepancies are due to incorrect taxonomic identification so that the GenBank accession number KJ956027 represents actually the mt genome of C szanaga erroneously identified as C czerskii...
2017: Evolutionary Bioinformatics Online
https://www.readbyqxmd.com/read/28739487/the-ros-mediated-activation-of-il-6-stat3-signaling-pathway-is-involved-in-the-27-hydroxycholesterol-induced-cellular-senescence-in-nerve-cells
#19
Jiao Liu, Yun Liu, Juan Chen, Chunyan Hu, Mengying Teng, Kailin Jiao, Zhaoxia Shen, Dongmei Zhu, Jia Yue, Zhong Li, Yuan Li
The oxysterol 27-hydroxycholesterol (27HC) is a selective estrogen receptor modulator (SERMs), which like endogenous estrogen 17β-estradiol (E2) induces the proliferation of ER-positive breast cancer cells in vitro. Interestingly, the observation that 27HC induces adverse effects in neural system, distinguishing it from E2. It has been suggested that high levels of circulating cholesterol increase the entry of 27HC into the brain, which may induce learning and memory impairment. Based on this evidence, 27HC may be associated with neurodegenerative processes and interrupted cholesterol homeostasis in the brain...
December 2017: Toxicology in Vitro: An International Journal Published in Association with BIBRA
https://www.readbyqxmd.com/read/28719149/cadmium-induced-toxicity-is-rescued-by-curcumin-a-review
#20
REVIEW
Mohammad Mohajeri, Mehdi Rezaee, Amirhossein Sahebkar
Cadmium (Cd) is one of the most common environmental and occupational heavy metals with extended distribution. Exposure to Cd may be associated with several deleterious consequences on the liver, bones, kidneys, lungs, testes, brain, immunological, and cardiovascular systems. Overproduction of reactive oxygen species (ROS) as the main mechanism behind its toxicity causes oxidative stress and subsequent damages to lipids, proteins, and DNA. Therefore, antioxidants along with chelating agents have shown promising outcomes against Cd-induced toxicity...
September 10, 2017: BioFactors
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