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Microphysiological system

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https://www.readbyqxmd.com/read/28300206/corrigendum-functional-coupling-of-human-microphysiology-systems-intestine-liver-kidney-proximal-tubule-blood-brain-barrier-and-skeletal-muscle
#1
Lawrence Vernetti, Albert Gough, Nicholas Baetz, Sarah Blutt, James R Broughman, Jacquelyn A Brown, Jennifer Foulke-Abel, Nesrin Hasan, Julie In, Edward Kelly, Olga Kovbasnjuk, Jonathan Repper, Nina Senutovitch, Janet Stabb, Catherine Yeung, Nick C Zachos, Mark Donowitz, Mary Estes, Jonathan Himmelfarb, George Truskey, John P Wikswo, D Lansing Taylor
No abstract text is available yet for this article.
March 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28267162/multi-functional-scaling-methodology-for-translational-pharmacokinetic-and-pharmacodynamic-applications-using-integrated-microphysiological-systems-mps
#2
Christian Maass, Cynthia L Stokes, Linda G Griffith, Murat Cirit
Microphysiological systems (MPS) provide relevant physiological environments in vitro for studies of pharmacokinetics, pharmacodynamics and biological mechanisms for translational research. Designing multi-MPS platforms is essential to study multi-organ systems. Typical design approaches, including direct and allometric scaling, scale each MPS individually and are based on relative sizes not function. This study's aim was to develop a new multi-functional scaling approach for integrated multi-MPS platform design for specific applications...
March 7, 2017: Integrative Biology: Quantitative Biosciences From Nano to Macro
https://www.readbyqxmd.com/read/28195514/blood-brain-barrier-on-a-chip-microphysiological-systems-that-capture-the-complexity-of-the-blood-central-nervous-system-interface
#3
Duc Tt Phan, R Hugh F Bender, Jillian W Andrejecsk, Agua Sobrino, Stephanie J Hachey, Steven C George, Christopher Cw Hughes
The blood-brain barrier is a dynamic and highly organized structure that strictly regulates the molecules allowed to cross the brain vasculature into the central nervous system. The blood-brain barrier pathology has been associated with a number of central nervous system diseases, including vascular malformations, stroke/vascular dementia, Alzheimer's disease, multiple sclerosis, and various neurological tumors including glioblastoma multiforme. There is a compelling need for representative models of this critical interface...
January 1, 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28176881/functional-coupling-of-human-microphysiology-systems-intestine-liver-kidney-proximal-tubule-blood-brain-barrier-and-skeletal-muscle
#4
Lawrence Vernetti, Albert Gough, Nicholas Baetz, Sarah Blutt, James R Broughman, Jacquelyn A Brown, Jennifer Foulke-Abel, Nesrin Hasan, Julie In, Edward Kelly, Olga Kovbasnjuk, Jonathan Repper, Nina Senutovitch, Janet Stabb, Catherine Yeung, Nick C Zachos, Mark Donowitz, Mary Estes, Jonathan Himmelfarb, George Truskey, John P Wikswo, D Lansing Taylor
Organ interactions resulting from drug, metabolite or xenobiotic transport between organs are key components of human metabolism that impact therapeutic action and toxic side effects. Preclinical animal testing often fails to predict adverse outcomes arising from sequential, multi-organ metabolism of drugs and xenobiotics. Human microphysiological systems (MPS) can model these interactions and are predicted to dramatically improve the efficiency of the drug development process. In this study, five human MPS models were evaluated for functional coupling, defined as the determination of organ interactions via an in vivo-like sequential, organ-to-organ transfer of media...
February 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28155845/design-and-fabrication-of-a-scalable-liver-lobule-on-a-chip-microphysiological-platform
#5
Amin A Banaeiyan, Jannick Theobald, Jurgita Paukštyte, Stefan Wölfl, Caroline B Adiels, Mattias Goksör
The design and fabrication of a very large-scale liver-lobule (VLSLL)-on-a-chip device, providing a microphysiological niche for hepatocytes, is described. The device consists of an integrated network of liver-lobule-like hexagonal tissue-culture chambers constructed in a hybrid layout with a separate seed-feed network. As a key feature, each chamber contains a central outlet mimicking the central vein of a liver lobule. Separating chamber walls located between the culture area and feed network protects cells from the shear force of the convective flow...
February 3, 2017: Biofabrication
https://www.readbyqxmd.com/read/28146426/ex-vivo-2d-and-3d-hsv-2-infection-model-using-human-normal-vaginal-epithelial-cells
#6
Yaqi Zhu, Yan Yang, Juanjuan Guo, Ying Dai, Lina Ye, Jianbin Qiu, Zhihong Zeng, Xiaoting Wu, Yanmei Xing, Xiang Long, Xufeng Wu, Lin Ye, Shubin Wang, Hui Li
Herpes simplex virus type 2 (HSV-2) infects human genital mucosa and establishes life-long latent infection. It is unmet need to establish a human cell-based microphysiological system for virus biology and anti-viral drug discovery. One of barriers is lacking of culture system of normal epithelial cells in vitro over decades. In this study, we established human normal vaginal epithelial cell (HNVEC) culture using co-culture system. HNVEC cells were then propagated rapidly and stably in a defined culture condition...
January 27, 2017: Oncotarget
https://www.readbyqxmd.com/read/28110483/explosive-blast-loading-on-human-3d-aggregate-minibrains
#7
Nicole E Zander, Thuvan Piehler, Helena Hogberg, David Pamies
The effects of primary explosive blast on brain tissue still remain mostly unknown. There are few in vitro models that use real explosives to probe the mechanisms of injury at the cellular level. In this work, 3D aggregates of human brain cells or brain microphysiological system were exposed to military explosives at two different pressures (50 and 100 psi). Results indicate that membrane damage and oxidative stress increased with blast pressure, but cell death remained minimal.
January 21, 2017: Cellular and Molecular Neurobiology
https://www.readbyqxmd.com/read/28092941/21st-century-cell-culture-for-21st-century-toxicology
#8
David Pamies, Thomas Hartung
There is no good science in bad models. Cell culture is especially prone to artifacts. A number of novel cell culture technologies have become more broadly available in the 21st century, which allow overcoming limitations of traditional culture and are more physiologically relevant. These include the use of stem-cell derived human cells, cocultures of different cell types, scaffolds and extracellular matrices, perfusion platforms (such as microfluidics), 3D culture, organ-on-chip technologies, tissue architecture, and organ functionality...
January 17, 2017: Chemical Research in Toxicology
https://www.readbyqxmd.com/read/28092382/a-vascularized-and-perfused-organ-on-a-chip-platform-for-large-scale-drug-screening-applications
#9
Duc T T Phan, Xiaolin Wang, Brianna M Craver, Agua Sobrino, Da Zhao, Jerry C Chen, Lilian Y N Lee, Steven C George, Abraham P Lee, Christopher C W Hughes
There is a growing awareness that complex 3-dimensional (3D) organs are not well represented by monolayers of a single cell type - the standard format for many drug screens. To address this deficiency, and with the goal of improving screens so that drugs with good efficacy and low toxicity can be identified, microphysiological systems (MPS) are being developed that better capture the complexity of in vivo physiology. We have previously described an organ-on-a-chip platform that incorporates perfused microvessels, such that survival of the surrounding tissue is entirely dependent on delivery of nutrients through the vessels...
January 31, 2017: Lab on a Chip
https://www.readbyqxmd.com/read/28089783/characterization-of-rat-or-human-hepatocytes-cultured-in-microphysiological-systems-mps-to-identify-hepatotoxicity
#10
Shih-Yu Chang, Jenna L Voellinger, Kirk P Van Ness, Brian Chapron, Rachel M Shaffer, Thomas Neumann, Collin C White, Terrance J Kavanagh, Edward J Kelly, David L Eaton
The liver is the main site for drug and xenobiotics metabolism, including inactivation or bioactivation. In order to improve the predictability of drug safety and efficacy in clinical development, and to facilitate the evaluation of the potential human health effects from exposure to environmental contaminants, there is a critical need to accurately model human organ systems such as the liver in vitro. We are developing a microphysiological system (MPS) based on a new commercial microfluidic platform (Nortis, Inc...
January 13, 2017: Toxicology in Vitro: An International Journal Published in Association with BIBRA
https://www.readbyqxmd.com/read/28078768/microphysiological-systems-organs-on-chips-for-drug-efficacy-and-toxicity-testing
#11
Lucie A Low, Danilo A Tagle
No abstract text is available yet for this article.
January 11, 2017: Clinical and Translational Science
https://www.readbyqxmd.com/read/27990124/endothelial-progenitor-cells-physiology-and-metabolic-plasticity-in-brain-angiogenesis-and-blood-brain-barrier-modeling
#12
REVIEW
Natalia A Malinovskaya, Yulia K Komleva, Vladimir V Salmin, Andrey V Morgun, Anton N Shuvaev, Yulia A Panina, Elizaveta B Boitsova, Alla B Salmina
Currently, there is a considerable interest to the assessment of blood-brain barrier (BBB) development as a part of cerebral angiogenesis developmental program. Embryonic and adult angiogenesis in the brain is governed by the coordinated activity of endothelial progenitor cells, brain microvascular endothelial cells, and non-endothelial cells contributing to the establishment of the BBB (pericytes, astrocytes, neurons). Metabolic and functional plasticity of endothelial progenitor cells controls their timely recruitment, precise homing to the brain microvessels, and efficient support of brain angiogenesis...
2016: Frontiers in Physiology
https://www.readbyqxmd.com/read/27910972/a-liver-microphysiological-system-of-tumor-cell-dormancy-and-inflammatory-responsiveness-is-affected-by-scaffold-properties
#13
A M Clark, S E Wheeler, C L Young, L Stockdale, J Shepard Neiman, W Zhao, D B Stolz, R Venkataramanan, D Lauffenburger, L Griffith, A Wells
Distant metastasis is the major cause of breast cancer-related mortality, commonly emerging clinically after 5 or more years of seeming 'cure' of the primary tumor, indicating a quiescent dormancy. The lack of relevant accessible model systems for metastasis that recreate this latent stage has hindered our understanding of the molecular basis and the development of therapies against these lethal outgrowths. We previously reported on the development of an all-human 3D ex vivo hepatic microphysiological system that reproduces several features of liver physiology and enables spontaneous dormancy in a subpopulation of breast cancer cells...
December 20, 2016: Lab on a Chip
https://www.readbyqxmd.com/read/27904714/facilitating-the-commercialization-and-use-of-organ-platforms-generated-by-the-microphysiological-systems-tissue-chip-program-through-public-private-partnerships
#14
REVIEW
Christine A Livingston, Kristin M Fabre, Danilo A Tagle
Microphysiological systems (organs-on-chips, tissue chips) are devices designed to recapitulate human physiology that could be used to better understand drug responses not easily addressed using other in vivo systems or in vitro animal models. Although still in development, initial results seem promising as tissue chips exhibit in vivo systems-like functional responses. The National Center for Advancing Translation Science (NCATS) identifies this technology as a potential tool that could improve the process of getting safer, more effective treatments to patients, and has led to the Tissue Chip Program, which aims to develop, integrate and validate major organ systems for testing...
2016: Computational and Structural Biotechnology Journal
https://www.readbyqxmd.com/read/27883356/a-human-brain-microphysiological-system-derived-from-induced-pluripotent-stem-cells-to-study-neurological-diseases-and-toxicity
#15
David Pamies, Paula Barreras, Katharina Block, Georgia Makri, Anupama Kumar, Daphne Wiersma, Lenna Smirnova, Ce Zhang, Joseph Bressler, Kimberly M Christian, Georgina Harris, Guo-Li Ming, Cindy J Berlinicke, Kelly Kyro, Hongjun Song, Carlos A Pardo, Thomas Hartung, Helena T Hogberg
Human in-vitro models of brain neurophysiology are needed to investigate molecular and cellular mechanisms associated with neurological disorders and neurotoxicity. We have developed a reproducible iPSC-derived human 3D brain microphysiological system (BMPS), comprised of differentiated mature neurons and glial cells (astrocytes and oligodendrocytes) that reproduce neuronal-glial interactions and connectivity. BMPS mature over eight weeks and show the critical elements of neuronal function: synaptogenesis and neuron-to-neuron (e...
November 24, 2016: ALTEX
https://www.readbyqxmd.com/read/27775708/instrumented-cardiac-microphysiological-devices-via-multimaterial-three-dimensional-printing
#16
Johan U Lind, Travis A Busbee, Alexander D Valentine, Francesco S Pasqualini, Hongyan Yuan, Moran Yadid, Sung-Jin Park, Arda Kotikian, Alexander P Nesmith, Patrick H Campbell, Joost J Vlassak, Jennifer A Lewis, Kevin K Parker
Biomedical research has relied on animal studies and conventional cell cultures for decades. Recently, microphysiological systems (MPS), also known as organs-on-chips, that recapitulate the structure and function of native tissues in vitro, have emerged as a promising alternative. However, current MPS typically lack integrated sensors and their fabrication requires multi-step lithographic processes. Here, we introduce a facile route for fabricating a new class of instrumented cardiac microphysiological devices via multimaterial three-dimensional (3D) printing...
March 2017: Nature Materials
https://www.readbyqxmd.com/read/27768243/prenatal-exposure-to-environmental-factors-and-congenital-limb-defects
#17
Peter G Alexander, Karen L Clark, Rocky S Tuan
Limb congenital defects afflict approximately 0.6:1000 live births. In addition to genetic factors, prenatal exposure to drugs and environmental toxicants, represents a major contributing factor to limb defects. Examples of well-recognized limb teratogenic agents include thalidomide, warfarin, valproic acid, misoprostol, and phenytoin. While the mechanism by which these agents cause dymorphogenesis is increasingly clear, prediction of the limb teratogenicity of many thousands of as yet uncharacterized environmental factors (pollutants) remains inexact...
October 21, 2016: Birth Defects Research. Part C, Embryo Today: Reviews
https://www.readbyqxmd.com/read/27760784/quantitative-assessment-of-population-variability-in-hepatic-drug-metabolism-using-a-perfused-three-dimensional-human-liver-microphysiological-system
#18
N Tsamandouras, T Kostrzewski, C L Stokes, L G Griffith, D J Hughes, M Cirit
In this work, we first describe the population variability in hepatic drug metabolism using cryopreserved hepatocytes from five different donors cultured in a perfused three-dimensional human liver microphysiological system, and then show how the resulting data can be integrated with a modeling and simulation framework to accomplish in vitro-in vivo translation. For each donor, metabolic depletion profiles of six compounds (phenacetin, diclofenac, lidocaine, ibuprofen, propranolol, and prednisolone) were measured, along with metabolite formation, mRNA levels of 90 metabolism-related genes, and markers of functional viability [lactate dehydrogenase (LDH) release, albumin, and urea production]...
January 2017: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/27563856/cover-image-volume-113-number-10-october-2016
#19
Paula G Miller, Michael L Shuler
Cover Legend The design and operation of a bidirectional flow, pumpless 14 chamber system representing 13 tissues/organs with both barrier and nonbarrier tissue chambers is described. Viability across all compartments was initially demonstrated with one cell line. Then viability and functionality in the device was retained for 7 days using 5 representative cell lines and compared to static controls. The cover image, by Michael L. Shuler and Paula G. Miller, is based on the Article Design and demonstration of a pumpless 14 compartment microphysiological system, DOI: 10...
October 2016: Biotechnology and Bioengineering
https://www.readbyqxmd.com/read/27560793/the-intercell-dynamics-of-t-cells-and-dendritic-cells-in-a-lymph-node-on-a-chip-flow-device
#20
Patrícia Moura Rosa, Nimi Gopalakrishnan, Hany Ibrahim, Markus Haug, Øyvind Halaas
T cells play a central role in immunity towards cancer and infectious diseases. T cell responses are initiated in the T cell zone of the lymph node (LN), where resident antigen-bearing dendritic cells (DCs) prime and activate antigen-specific T cells passing by. In the present study, we investigated the T cell : DC interaction in a microfluidic device to understand the intercellular dynamics and physiological conditions in the LN. We show random migration of antigen-specific T cells onto the antigen-presenting DC monolayer independent of the flow direction with a mean T cell : DC dwell time of 12...
October 7, 2016: Lab on a Chip
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