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Microphysiological system

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https://www.readbyqxmd.com/read/29744562/mussel-inspired-3d-fiber-scaffolds-for-heart-on-a-chip-toxicity-studies-of-engineered-nanomaterials
#1
Seungkuk Ahn, Herdeline Ann M Ardoña, Johan U Lind, Feyisayo Eweje, Sean L Kim, Grant M Gonzalez, Qihan Liu, John F Zimmerman, Georgios Pyrgiotakis, Zhenyuan Zhang, Juan Beltran-Huarac, Paul Carpinone, Brij M Moudgil, Philip Demokritou, Kevin Kit Parker
Due to the unique physicochemical properties exhibited by materials with nanoscale dimensions, there is currently a continuous increase in the number of engineered nanomaterials (ENMs) used in consumer goods. However, several reports associate ENM exposure to negative health outcomes such as cardiovascular diseases. Therefore, understanding the pathological consequences of ENM exposure represents an important challenge, requiring model systems that can provide mechanistic insights across different levels of ENM-based toxicity...
May 10, 2018: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/29697851/advanced-good-cell-culture-practice-for-human-primary-stem-cell-derived-and-organoid-models-as-well-as-microphysiological-systems
#2
David Pamies, Anna Bal-Price, Christophe Chesné, Sandra Coecke, Andras Dinnyes, Chantra Eskes, Regina Grillari, Gerhard Gstraunthaler, Thomas Hartung, Paul Jennings, Marcel Leist, Ulrich Martin, Robert Passier, Jens C Schwamborn, Glyn N Stacey, Heidrun Ellinger-Ziegelbauer, Mardas Daneshian
A major reason for the current reproducibility crisis in the life sciences is the poor implementation of quality control measures and reporting standards. Improvement is needed, especially regarding increasingly complex in vitro methods. Good Cell Culture Practice (GCCP) was an effort from 1996 to 2005 to develop such minimum quality standards also applicable in academia. This paper summarizes recent key developments in in vitro cell culture and addresses the issues resulting for GCCP, e.g. the development of induced pluripotent stem cells (iPSCs) and gene-edited cells...
April 13, 2018: ALTEX
https://www.readbyqxmd.com/read/29696831/in-vitro-tissue-engineered-skeletal-muscle-models-for-studying-muscle-physiology-and-disease
#3
REVIEW
Alastair Khodabukus, Neel Prabhu, Jason Wang, Nenad Bursac
Healthy skeletal muscle possesses the extraordinary ability to regenerate in response to small-scale injuries; however, this self-repair capacity becomes overwhelmed with aging, genetic myopathies, and large muscle loss. The failure of small animal models to accurately replicate human muscle disease, injury and to predict clinically-relevant drug responses has driven the development of high fidelity in vitro skeletal muscle models. Herein, the progress made and challenges ahead in engineering biomimetic human skeletal muscle tissues that can recapitulate muscle development, genetic diseases, regeneration, and drug response is discussed...
April 25, 2018: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/29677694/3s-systematic-systemic-and-systems-biology-and-toxicology
#4
Lena Smirnova, Nicole Kleinstreuer, Raffaella Corvi, Andre Levchenko, Suzanne C Fitzpatrick, Thomas Hartung
A biological system is more than the sum of its parts - it accomplishes many functions via synergy. Deconstructing the system down to the molecular mechanism level necessitates the complement of reconstructing functions on all levels, i.e., in our conceptualization of biology and its perturbations, our experimental models and computer modelling. Toxicology contains the somewhat arbitrary subclass "systemic toxicities"; however, there is no relevant toxic insult or general disease that is not systemic...
2018: ALTEX
https://www.readbyqxmd.com/read/29590495/prediction-of-drug-induced-hepatotoxicity-using-long-term-stable-primary-hepatic-3d-spheroid-cultures-in-chemically-defined-conditions
#5
Sabine Vorrink, Yitian Zhou, Magnus Ingelman-Sundberg, Volker M Lauschke
High failure rates of drug candidates in the clinics, restricted-use warnings and as well as withdrawals of drugs in post-marketing stages are of substantial concern for the pharmaceutical industry and drug-induced liver injury (DILI) constitutes one of the most frequent reasons for such safety failures. Importantly, as DILI cannot be accurately predicted using animal models, animal safety tests are commonly complemented with assessments in human in vitro systems. 3D spheroid cultures of primary human hepatocytes (PHH) in chemically defined conditions, hereafter termed CD-spheroids, have recently emerged as a microphysiological model system in which hepatocytes retain their molecular phenotypes and hepatic functions for multiple weeks in culture...
March 24, 2018: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/29540740/interconnected-microphysiological-systems-for-quantitative-biology-and-pharmacology-studies
#6
Collin D Edington, Wen Li Kelly Chen, Emily Geishecker, Timothy Kassis, Luis R Soenksen, Brij M Bhushan, Duncan Freake, Jared Kirschner, Christian Maass, Nikolaos Tsamandouras, Jorge Valdez, Christi D Cook, Tom Parent, Stephen Snyder, Jiajie Yu, Emily Suter, Michael Shockley, Jason Velazquez, Jeremy J Velazquez, Linda Stockdale, Julia P Papps, Iris Lee, Nicholas Vann, Mario Gamboa, Matthew E LaBarge, Zhe Zhong, Xin Wang, Laurie A Boyer, Douglas A Lauffenburger, Rebecca L Carrier, Catherine Communal, Steven R Tannenbaum, Cynthia L Stokes, David J Hughes, Gaurav Rohatgi, David L Trumper, Murat Cirit, Linda G Griffith
Microphysiological systems (MPSs) are in vitro models that capture facets of in vivo organ function through use of specialized culture microenvironments, including 3D matrices and microperfusion. Here, we report an approach to co-culture multiple different MPSs linked together physiologically on re-useable, open-system microfluidic platforms that are compatible with the quantitative study of a range of compounds, including lipophilic drugs. We describe three different platform designs - "4-way", "7-way", and "10-way" - each accommodating a mixing chamber and up to 4, 7, or 10 MPSs...
March 14, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29415926/-tissue-engineering-based-approaches-to-enhance-physiological-relevancy-of-cell-based-assays
#7
Yasuyuki Sakai, Marie Shinohara
Animal-free and mechanism-based understanding of human body responses is the ultimate goal of alternative to animal experiments. To achieve this goal, integration of advanced cell-based assays using iPS/ES cell technologies with various numerical methods are required. In this review, from the standpoint of tissue engineering, we focused first on the enhancement of physiological relevance of tissue culture models by overcoming the problem between 3D cellular organization and oxygen/nutrient supply. Second, we summarized the concept and actual systems of microfluidic-based body/organ on-a-chip systems, also called as microphysiological system, MPS, particularly for liver on-a-chip systems...
2018: Nihon Yakurigaku Zasshi. Folia Pharmacologica Japonica
https://www.readbyqxmd.com/read/29392898/the-role-of-atp-signalling-in-response-to-mechanical-stimulation-studied-in-t24-cells-using-new-microphysiological-tools
#8
Na N Guan, Nimish Sharma, Katarina Hallén-Grufman, Edwin W H Jager, Karl Svennersten
The capacity to store urine and initiate voiding is a valued characteristic of the human urinary bladder. To maintain this feature, it is necessary that the bladder can sense when it is full and when it is time to void. The bladder has a specialized epithelium called urothelium that is believed to be important for its sensory function. It has been suggested that autocrine ATP signalling contributes to this sensory function of the urothelium. There is well-established evidence that ATP is released via vesicular exocytosis as well as by pannexin hemichannels upon mechanical stimulation...
April 2018: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/29381325/smart-cell-culture-systems-integration-of-sensors-and-actuators-into-microphysiological-systems
#9
Mario M Modena, Ketki Chawla, Patrick M Misun, Andreas Hierlemann
Technological advances in microfabrication techniques in combination with organotypic cell and tissue models have enabled the realization of microphysiological systems capable of recapitulating aspects of human physiology in vitro with great fidelity. Concurrently, a number of analysis techniques has been developed to probe and characterize these model systems. However, many assays are still performed off-line, which severely compromises the possibility of obtaining real-time information from the samples under examination, and which also limits the use of these platforms in high-throughput analysis...
February 15, 2018: ACS Chemical Biology
https://www.readbyqxmd.com/read/29353230/a-model-of-dormant-emergent-metastatic-breast-cancer-progression-enabling-exploration-of-biomarker-signatures
#10
Amanda M Clark, Manu P Kumar, Sarah E Wheeler, Carissa L Young, Raman Venkataramanan, Donna B Stolz, Linda G Griffith, Douglas A Lauffenburger, Alan Wells
Breast cancer mortality predominantly results from dormant micrometastases that emerge as fatal outgrowths years after initial diagnosis. In order to gain insights concerning factors associated with emergence of liver metastases, we recreated spontaneous dormancy in an all-human ex vivo hepatic microphysiological system (MPS). Seeding this MPS with small numbers (<0.05% by cell count) of the aggressive MDA-MB-231 breast cancer cell line, two populations formed: actively proliferating ("growing"; EdU+ ), and spontaneously quiescent ("dormant"; EdU- )...
April 2018: Molecular & Cellular Proteomics: MCP
https://www.readbyqxmd.com/read/29262260/breaking-the-in-vitro-barrier-in-respiratory-medicine-engineered-microphysiological-systems-for-chronic-obstructive-pulmonary-disease-and-beyond
#11
Kambez H Benam, Melanie Königshoff, Oliver Eickelberg
No abstract text is available yet for this article.
April 1, 2018: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/29251840/blood-brain-barrier-development-systems-modeling-and-predictive-toxicology
#12
REVIEW
Katerine S Saili, Todd J Zurlinden, Andrew J Schwab, Aymeric Silvin, Nancy C Baker, E Sidney Hunter, Florent Ginhoux, Thomas B Knudsen
The blood-brain barrier (BBB) serves as a gateway for passage of drugs, chemicals, nutrients, metabolites, and hormones between vascular and neural compartments in the brain. Here, we review BBB development with regard to the microphysiology of the neurovascular unit (NVU) and the impact of BBB disruption on brain development. Our focus is on modeling these complex systems. Extant in silico models are available as tools to predict the probability of drug/chemical passage across the BBB; in vitro platforms for high-throughput screening and high-content imaging provide novel data streams for profiling chemical-biological interactions; and engineered human cell-based microphysiological systems provide empirical models with which to investigate the dynamics of NVU function...
December 1, 2017: Birth Defects Research
https://www.readbyqxmd.com/read/29217459/technical-aspects-of-microphysiological-systems-mps-as-a-promising-wet-human-in-vivo-simulator
#13
REVIEW
Toshiyuki Kanamori, Shinji Sugiura, Yasuyuki Sakai
Microphysiological systems (MPS) are currently attracting a lot of interest from pharmaceutical companies worldwide. In the United States and European Union, several large government projects related to MPS have been initiated, and, in Japan, pharmaceutical companies interested in MPS are watching the recent trends and developments in the field. In July 2017, the Japan Agency for Medical Research and Development initiated a research program to develop chip-based MPS. In this review, we examine the technical aspects of commercializing chip-based MPS...
February 2018: Drug Metabolism and Pharmacokinetics
https://www.readbyqxmd.com/read/29214585/microphysiological-systems-tissue-chips-and-their-utility-for-rare-disease-research
#14
Lucie A Low, Danilo A Tagle
The scientific and technological development of microphysiological systems (MPS) modeling organs-on-chips, or "tissue chips" (TCs), has progressed rapidly over the past decade. Stem cell research and microfluidic concepts have combined to lead to the development of microphysiological platforms representing an ever-expanding list of different human organ systems. In the context of rare diseases, these bioengineered microfluidics platforms hold promise for modeling of disorders and could prove useful in the screening and efficacy testing of existing therapeutics...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29205920/multiorgan-microphysiological-systems-for-drug-development-strategies-advances-and-challenges
#15
REVIEW
Ying I Wang, Carlos Carmona, James J Hickman, Michael L Shuler
Traditional cell culture and animal models utilized for preclinical drug screening have led to high attrition rates of drug candidates in clinical trials due to their low predictive power for human response. Alternative models using human cells to build in vitro biomimetics of the human body with physiologically relevant organ-organ interactions hold great potential to act as "human surrogates" and provide more accurate prediction of drug effects in humans. This review is a comprehensive investigation into the development of tissue-engineered human cell-based microscale multiorgan models, or multiorgan microphysiological systems for drug testing...
January 2018: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/29202460/human-liver-kidney-model-elucidates-the-mechanisms-of-aristolochic-acid-nephrotoxicity
#16
Shih-Yu Chang, Elijah J Weber, Viktoriya S Sidorenko, Alenka Chapron, Catherine K Yeung, Chunying Gao, Qingcheng Mao, Danny Shen, Joanne Wang, Thomas A Rosenquist, Kathleen G Dickman, Thomas Neumann, Arthur P Grollman, Edward J Kelly, Jonathan Himmelfarb, David L Eaton
Environmental exposures pose a significant threat to human health. However, it is often difficult to study toxicological mechanisms in human subjects due to ethical concerns. Plant-derived aristolochic acids are among the most potent nephrotoxins and carcinogens discovered to date, yet the mechanism of bioactivation in humans remains poorly understood. Microphysiological systems (organs-on-chips) provide an approach to examining the complex, species-specific toxicological effects of pharmaceutical and environmental chemicals using human cells...
November 16, 2017: JCI Insight
https://www.readbyqxmd.com/read/29184959/a-multi-throughput-multi-organ-on-a-chip-system-on-a-plate-formatted-pneumatic-pressure-driven-medium-circulation-platform
#17
T Satoh, S Sugiura, K Shin, R Onuki-Nagasaki, S Ishida, K Kikuchi, M Kakiki, T Kanamori
This paper reports a multi-throughput multi-organ-on-a-chip system formed on a pneumatic pressure-driven medium circulation platform with a microplate-sized format as a novel type of microphysiological system. The pneumatic pressure-driven platform enabled parallelized multi-organ experiments (i.e. simultaneous operation of multiple multi-organ culture units) and pipette-friendly liquid handling for various conventional cell culture experiments, including cell seeding, medium change, live/dead staining, cell growth analysis, gene expression analysis of collected cells, and liquid chromatography-mass spectrometry analysis of chemical compounds in the culture medium...
December 19, 2017: Lab on a Chip
https://www.readbyqxmd.com/read/29141507/sandwiched-white-adipose-tissue-a-microphysiological-system-of-primary-human-adipose-tissue
#18
Frank H Lau, Kelly Vogel, John P Luckett, Maxwell Hunt, Alicia Meyer, Camille L Rogers, Oren Tessler, Charles L Dupin, Hugo St Hilaire, Kazi N Islam, Trivia Frazier, Jeffrey M Gimble, Steven Scahill
White adipose tissue (WAT) is a critical organ in both health and disease. However, physiologically faithful tissue culture models of primary human WAT remain limited, at best. In this study we describe a novel WAT culture system in which primary human WAT is sandwiched between tissue-engineered sheets of adipose-derived stromal cells. This construct, called "sandwiched white adipose tissue" (SWAT), can be defined as a microphysiological system (MPS) since it is a tissue-engineered, multicellular, three-dimensional organ construct produced using human cells...
January 9, 2018: Tissue Engineering. Part C, Methods
https://www.readbyqxmd.com/read/29137633/bi-directional-exosome-driven-intercommunication-between-the-hepatic-niche-and-cancer-cells
#19
Nikolina Dioufa, Amanda M Clark, Bo Ma, Colin H Beckwitt, Alan Wells
BACKGROUND: Our understanding of the multiple roles exosomes play during tumor progression is still very poor and the contribution of the normal tissue derived exosomes in distant seeding and tumor outgrowth has also not been widely appreciated. METHODS: Using our all-human liver microphysiological system (MPS) platform as a model to closely recapitulate the early metastatic events, we isolated exosomes from both tumor cells and liver microenvironment. RESULTS: We observed that while priming of the hepatic niche (HepN) with MDA-231 breast cancer derived exosomes facilitated seeding of the cancer cells in the liver, subsequent tumor outgrowth was diminished; this was consistent with increased entry into dormancy...
November 14, 2017: Molecular Cancer
https://www.readbyqxmd.com/read/29128921/a-microfluidic-in-line-elisa-for-measuring-secreted-protein-under-perfusion
#20
Qiyue Luan, Stacey Cahoon, Agnes Wu, Shyam Sundhar Bale, Martin Yarmush, Abhinav Bhushan
Recent progress in the development of microfluidic microphysiological systems such as 'organs-on-chips' and microfabricated cell culture is geared to simulate organ-level physiology. These tissue models leverage microengineering technologies that provide capabilities of presenting cultured cells with input signals in a more physiologically relevant context such as perfused flow. Proteins that are secreted from cells have important information about the health of the cells. Techniques to quantify cellular proteins include mass spectrometry to ELISA (enzyme-linked immunosorbent assay)...
November 11, 2017: Biomedical Microdevices
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