keyword
MENU ▼
Read by QxMD icon Read
search

Biologic Scaffold

keyword
https://www.readbyqxmd.com/read/28092860/design-synthesis-and-biological-evaluation-of-quinazoline-phosphoramidate-mustard-conjugates-as-anticancer-drugs
#1
Songwen Lin, Yingbo Li, Yufen Zheng, Laichun Luo, Qi Sun, Zemei Ge, Tieming Cheng, Runtao Li
A series of novel compounds with phosphoramide mustard functionality incorporated into the quinazoline scaffold of EGFR/HER2 inhibitors were designed and synthesized as multi-target-directed ligands against tumor cells. In vitro assays showed that tumor cell lines with high HER2 level were more sensitive to the compounds than tumor cells with low HER2 level. Compound 10d (EMB-3) was one of the most potent inhibitors with IC50 of 7.4 nM and 82 nM against EGFR and HER2, respectively. The mechanism studies were also supported by the effect of 10d-induced DNA damage in MDA-MB-468 cells...
January 3, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28092671/pde4d-promotes-fak-mediated-cell-invasion-in-braf-mutated-melanoma
#2
J Delyon, A Servy, F Laugier, J André, N Ortonne, M Battistella, S Mourah, A Bensussan, C Lebbé, N Dumaz
The cyclic AMP (cAMP) signaling pathway is critical in melanocyte biology for regulating differentiation. It is downregulated by phosphodiesterase (PDE) enzymes, which degrade cAMP itself. In melanoma evidence suggests that inhibition of the cAMP pathway by PDE type 4 (PDE4) favors tumor progression. For example, in melanomas harboring RAS mutations, the overexpression of PDE4 is crucial for MAPK pathway activation and proliferation induced by oncogenic RAS. Here we showed that PDE4D is overexpressed in BRAF-mutated melanoma cell lines, constitutively disrupting the cAMP pathway activation...
January 16, 2017: Oncogene
https://www.readbyqxmd.com/read/28092358/recurrent-rna-motifs-as-scaffolds-for-genetically-encodable-small-molecule-biosensors
#3
Ely B Porter, Jacob T Polaski, Makenna M Morck, Robert T Batey
Allosteric RNA devices are increasingly being viewed as important tools capable of monitoring enzyme evolution, optimizing engineered metabolic pathways, facilitating gene discovery and regulators of nucleic acid-based therapeutics. A key bottleneck in the development of these platforms is the availability of small-molecule-binding RNA aptamers that robustly function in the cellular environment. Although aptamers can be raised against nearly any desired target through in vitro selection, many cannot easily be integrated into devices or do not reliably function in a cellular context...
January 16, 2017: Nature Chemical Biology
https://www.readbyqxmd.com/read/28087693/de-novo-genome-and-transcriptome-assembly-of-the-canadian-beaver-castor-canadensis
#4
Si Lok, Tara A Paton, Zhuozhi Wang, Gaganjot Kaur, Susan Walker, Ryan K C Yuen, Wilson W L Sung, Joseph Whitney, Janet A Buchanan, Brett Trost, Naina Singh, Beverly Apresto, Nan Chen, Matthew Coole, Travis J Dawson, Karen Y Ho, Zhizhou Hu, Sanjeev Pullenayegum, Kozue Samler, Arum Shipstone, Fiona Tsoi, Ting Wang, Sergio L Pereira, Pirooz Rostami, Carol Ann Ryan, Amy Hin Yan Tong, Karen Ng, Yogi Sundaravadanam, Jared T Simpson, Burton K Lim, Mark D Engstrom, Christopher J Dutton, Kevin C R Kerr, Maria Franke, William Rapley, Richard F Wintle, Stephen W Scherer
The Canadian beaver (Castor canadensis) is the largest indigenous rodent in North America. We report a draft annotated assembly of the beaver genome, the first for a large rodent and the first mammalian genome assembled directly from uncorrected and moderate coverage (< 30 ×) long-reads generated by single-molecule sequencing. The genome size is 2.7 Gb estimated by k-mer analysis. We assembled the beaver genome using the new Canu assembler optimized for noisy reads. The resulting assembly was refined using Pilon supported by shortreads (80 ×) and checked for accuracy by congruency against an independent short-read assembly...
January 13, 2017: G3: Genes—Genomes—Genetics
https://www.readbyqxmd.com/read/28087487/bioprinting-for-vascular-and-vascularized-tissue-biofabrication
#5
REVIEW
Pallab Datta, Bugra Ayan, Ibrahim T Ozbolat
: Bioprinting is a promising technology to fabricate design-specific tissue constructs due to its ability to create complex, heterocellular structures with anatomical precision. Bioprinting enables the deposition of various biologics including growth factors, cells, genes, neo-tissues and extra-cellular matrix-like hydrogels. Benefits of bioprinting have started to make a mark in the fields of tissue engineering, regenerative medicine and pharmaceutics. Specifically, in the field of tissue engineering, the creation of vascularized tissue constructs has remained a principal challenge till date...
January 10, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28079984/medical-application-of-glycosaminoglycans-a-review
#6
REVIEW
Alexander Köwitsch, Guoying Zhou, Thomas Groth
The characteristic molecular composition of the different glycosaminoglycans (GAG) is related to their role as structural components and regulators of a multitude of functions of proteins, cells and tissues in the human body. Therefore, it is not surprising that GAG are widely used as coating materials for implants, components of 3D-constructs like tissue engineering scaffolds and hydrogels, but also as diagnostic devices like biosensors and in controlled release applications. Beside a physisorption or encapsulation of GAG, these applications often require their chemical modification to allow a stable covalent attachment on surfaces or cross-linking reactions with other molecules...
January 12, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28079884/lack-of-collagen-xv-is-protective-after-ischemic-stroke-in-mice
#7
Hiramani Dhungana, Mikko T Huuskonen, Taina Pihlajaniemi, Ritva Heljasvaara, Denis Vivien, Katja M Kanninen, Tarja Malm, Jari Koistinaho, Sighild Lemarchant
Collagens are key structural components of basement membranes, providing a scaffold for other components or adhering cells. Collagens and collagen-derived active fragments contribute to biological activities such as cell growth, differentiation and migration. Here, we report that collagen XV knock-out (ColXV KO) mice are resistant to experimental ischemic stroke. Interestingly, the infarcts of ColXV KO mice were as small as those of wild-type (WT) mice thrombolysed with recombinant tissue plasminogen activator (rtPA), the actual treatment for ischemic stroke...
January 12, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28078994/modulation-of-tumour-related-signaling-pathways-by-natural-pentacyclic-triterpenoids-and-their-semisynthetic-derivatives
#8
Andrey V Markov, Evgeniya B Logashenko, Marina A Zenkova
Pentacyclic triterpenoids are a large class of natural isoprenoids that are widely biosynthesized in higher plants. These compounds are potent anticancer agents that exhibit antiproliferative, antiangiogenic, antiinflammatory and proapoptotic activities. Although their effects on multiple pathways have been reported, unifying mechanisms of action have not yet been established. To date, a huge number of semisynthetic derivatives have been synthesized in different laboratories on the basis of triterpenoid scaffolds, and many have been assayed for their biological activities...
January 12, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28078820/improvement-of-the-in-vivo-cellular-repopulation-of-decellularized-cardiovascular-tissues-by-a-detergent-free-non-proteolytic-actin-disassembling-regimen
#9
Alexander Assmann, Marc Struß, Franziska Schiffer, Friederike Heidelberg, Hiroshi Munakata, Elena V Timchenko, Pavel E Timchenko, Tim Kaufmann, Khon Huynh, Yukiharu Sugimura, Quentin Leidl, Antonio Pinto, Volker R Stoldt, Artur Lichtenberg, Payam Akhyari
Low immunogenicity and high repopulation capacity are crucial determinants for the functional and structural performance of acellular cardiovascular implants. The present study evaluates a detergent-free, non-proteolytic, actin-disassembling regimen (BIO) for decellularization of heart valve and vessel grafts, particularly focusing on their bio-functionality. Rat aortic conduits (rAoC; n = 89) and porcine aortic valve samples (n = 106) are decellularized using detergents (group DET) or the BIO regimen...
January 11, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28078813/host-defense-peptide-derived-privileged-scaffolds-for-anti-infective-drug-discovery
#10
Ersilia Nigro, Irene Colavita, Daniela Sarnataro, Olga Scudiero, Aurora Daniele, Francesco Salvatore, Antonello Pessi
'Privileged scaffolds' are molecular frameworks which have been successfully exploited for small molecule drug discovery. Peptide privileged scaffolds, featuring a strictly conserved multiple-disulfide framework and high variability in the rest of the sequence, display a broad range of biological effects, including antimicrobial and antiviral activity. Unlike small molecules, however, the cost of manufacturing these peptides is high, and their synthesis challenging. We previously described a simplified privileged scaffold corresponding to the γ-core of human β-defensin-3 (HBD3)...
January 12, 2017: Journal of Peptide Science: An Official Publication of the European Peptide Society
https://www.readbyqxmd.com/read/28078188/new-innovations-for-deep-partial-thickness-burn-treatment-with-acell-matristem-matrix
#11
Justine S Kim, Alexander J Kaminsky, J Blair Summitt, Wesley P Thayer
Objective: Burn injuries remain a large financial burden on the healthcare system. According to CDC statistics (2010), nonfatal and hospitalized burns in the U.S. cost $1.8 billion for an annual incidence of ∼486,000 cases. To date, no technique proves to be the ideal therapy of deep partial-thickness burns. In this study, we review a trial usage of ACell (ACell, Inc.) wound matrix on deep partial-thickness burns. Approach: Burn patients were admitted through the Vanderbilt Emergency Department. Three were consented to receive ACell therapy...
December 1, 2016: Advances in Wound Care
https://www.readbyqxmd.com/read/28076291/individual-construction-of-freeform-fabricated-polycaprolactone-scaffolds-for-osteogenesis
#12
Lu Liu, Guixin Shi, Ying Cui, Hui Li, Zhengchao Li, Qiangcheng Zeng, Yong Guo
The construction of engineered bone mostly focuses on simulating the extracellular matrix (ECM) for proper biological activity. However, the complexity of architecture and the variability of the mechanical properties of natural bones are related to individual differences in age, nutritional state, mechanical loading and disease status. Defect substitutions should be normed with the host natural bone, balancing architectural and mechanical adaption, as well as biological activity. Using a freeform fabrication (FFF) method, we prepared polycaprolactone (PCL) scaffolds with different architectures...
January 11, 2017: Biomedizinische Technik. Biomedical Engineering
https://www.readbyqxmd.com/read/28073115/pyridazine-based-scaffolds-as-privileged-structures-in-anti-cancer-therapy
#13
M Jaballah, R Serya, K Abouzid
Pyridazines, their oxo derivatives; pyridazinone as well as fused bi- or tricyclic pyridazine containing scaffolds are key structural features of many biologically active compounds with diverse pharmacological applications, including cancer therapy. Since protein kinases play prominent role in tumor biology, the inhibition of its signaling pathway is considered an effective therapeutic option for the treatment of cancer.Based on the various advantages of pyridazines in drug design including modulation of the physico-chemical properties, improving ADME and toxicity profile as well as easy and diverse synthetic methods of access, makes them an invaluable tool for designing compounds as future drugs for targeted cancer treatment...
January 10, 2017: Drug Research
https://www.readbyqxmd.com/read/28072566/guard-the-guardian-a-crl4-ligase-stands-watch-over-histone-production
#14
Fabienne Lampert, Mia M L Brodersen, Matthias Peter
Histones are evolutionarily conserved proteins that together with DNA constitute eukaryotic chromatin in a defined stoichiometry. Core histones are dynamic scaffolding proteins that undergo a myriad of post-translational modifications, which selectively engage chromosome condensation, replication, transcription and DNA damage repair. Cullin4-RING ubiquitin E3 ligases are known to hold pivotal roles in a wide spectrum of chromatin biology ranging from chromatin remodeling and transcriptional repression, to sensing of cytotoxic DNA lesions...
January 10, 2017: Nucleus
https://www.readbyqxmd.com/read/28071973/collagen-cross-linking-biophysical-biochemical-and-biological-response-analysis
#15
L Delgado, Kieran Fuller, Dimitrios I Zeugolis
Extracted forms of collagen are subjected to chemical cross-linking to enhance their stability. However, traditional cross-linking approaches are associated with toxicity and inflammation. This work investigates the stabilisation capacity, cytotoxicity and inflammatory response of collagen scaffolds cross-linked with glutaraldehyde, carbodiimide, 4-arm polyethylene glycol succinimidyl glutarate, genipin and oleuropein. Although all cross-linking methods reduced free amine groups, variable data were obtained with respect to denaturation temperature, resistance to collagenase digestion and mechanical properties...
January 10, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28071596/3d-bioprinting-of-gelma-scaffolds-triggers-mineral-deposition-by-primary-human-osteoblasts
#16
Christine McBeth, Jasmin Lauer, Michael Ottersbach, Jennifer Campbell, Andre Sharon, Alexis F Sauer-Budge
Due to its relatively low level of antigenicity and high durability, titanium has successfully been used as the major material for biological implants. However, because the typical interface between titanium and tissue precludes adequate transmission of load into the surrounding bone, over time, load-bearing implants tend to loosen and revision surgeries are required. Osseointegration of titanium implants requires presentation of both biological and mechanical cues that promote attachment of and trigger mineral deposition by osteoblasts...
January 10, 2017: Biofabrication
https://www.readbyqxmd.com/read/28071595/hybrid-3d-2d-printing-for-bone-scaffolds-fabrication
#17
V A Seleznev, V Ya Prinz
It is a well-known fact that bone scaffold topography on micro- and nanometer scale influences the cellular behavior. Nano-scale surface modification of scaffolds allows the modulation of biological activity for enhanced cell differentiation. To date, there has been only a limited success in printing scaffolds with micro- and nano-scale features exposed on the surface. To improve on the currently available imperfect technologies, in our paper we introduce new hybrid technologies based on a combination of 2D (nano imprint) and 3D printing methods...
January 10, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28070691/biological-characteristic-effects-of-human-dental-pulp-stem-cells-on-poly-%C3%AE%C2%B5-caprolactone-biphasic-calcium-phosphate-fabricated-scaffolds-using-modified-melt-stretching-and-multilayer-deposition
#18
Natkrita Wongsupa, Thongchai Nuntanaranont, Suttatip Kamolmattayakul, Nuttawut Thuaksuban
Craniofacial bone defects such as alveolar cleft affect the esthetics and functions that need bone reconstruction. The advanced techniques of biomaterials combined with stem cells have been a challenging role for maxillofacial surgeons and scientists. PCL-coated biphasic calcium phosphate (PCL-BCP) scaffolds were created with the modified melt stretching and multilayer deposition (mMSMD) technique and merged with human dental pulp stem cells (hDPSCs) to fulfill the component of tissue engineering for bone substitution...
February 2017: Journal of Materials Science. Materials in Medicine
https://www.readbyqxmd.com/read/28068322/role-of-the-pdz-scaffold-protein-nherf1-ebp50-in-cancer-biology-from-signaling-regulation-to-clinical-relevance
#19
REVIEW
J Vaquero, T H Nguyen Ho-Bouldoires, A Clapéron, L Fouassier
The transmission of cellular information requires fine and subtle regulation of proteins that need to interact in a coordinated and specific way to form efficient signaling networks. The spatial and temporal coordination relies on scaffold proteins. Thanks to protein interaction domains such as PDZ domains, scaffold proteins organize multiprotein complexes enabling the proper transmission of cellular information through intracellular networks. NHERF1/EBP50 is a PDZ-scaffold protein that was initially identified as an organizer and regulator of transporters and channels at the apical side of epithelia through actin-binding ezrin-moesin-radixin proteins...
January 9, 2017: Oncogene
https://www.readbyqxmd.com/read/28068110/maternal-scaffolding-in-a-disadvantaged-global-context-the-influence-of-working-memory-and-cognitive-capacities
#20
Jelena Obradović, Ximena A Portilla, Nicole Tirado-Strayer, Saima Siyal, Muneera A Rasheed, Aisha K Yousafzai
The current study focuses on maternal cognitive capacities as determinants of parenting in a highly disadvantaged global context, where children's experiences at home are often the 1st and only opportunity for learning and intellectual growth. In a large sample of 1,291 biological mothers of preschool-aged children in rural Pakistan, we examined the unique association of maternal working memory skills (independent of related cognitive capacities) with cognitively stimulating parenting behaviors. Path analysis revealed that directly assessed working memory, short-term memory, and verbal intelligence independently predicted greater levels of observed maternal scaffolding behaviors...
January 9, 2017: Journal of Family Psychology: JFP
keyword
keyword
76657
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"