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Kaur S, Tripathi DM, Venugopal JR, Ramakrishna S. Advances in biomaterials for hepatic tissue engineering. CURRENT OPINION IN BIOMEDICAL ENGINEERING 2020. [DOI: 10.1016/j.cobme.2020.05.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Underhill GH, Khetani SR. Bioengineered Liver Models for Drug Testing and Cell Differentiation Studies. Cell Mol Gastroenterol Hepatol 2018; 5:426-439.e1. [PMID: 29675458 PMCID: PMC5904032 DOI: 10.1016/j.jcmgh.2017.11.012] [Citation(s) in RCA: 106] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2017] [Accepted: 11/21/2017] [Indexed: 12/19/2022]
Abstract
In vitro models of the human liver are important for the following: (1) mitigating the risk of drug-induced liver injury to human beings, (2) modeling human liver diseases, (3) elucidating the role of single and combinatorial microenvironmental cues on liver cell function, and (4) enabling cell-based therapies in the clinic. Methods to isolate and culture primary human hepatocytes (PHHs), the gold standard for building human liver models, were developed several decades ago; however, PHHs show a precipitous decline in phenotypic functions in 2-dimensional extracellular matrix-coated conventional culture formats, which does not allow chronic treatment with drugs and other stimuli. The development of several engineering tools, such as cellular microarrays, protein micropatterning, microfluidics, biomaterial scaffolds, and bioprinting, now allow precise control over the cellular microenvironment for enhancing the function of both PHHs and induced pluripotent stem cell-derived human hepatocyte-like cells; long-term (4+ weeks) stabilization of hepatocellular function typically requires co-cultivation with liver-derived or non-liver-derived nonparenchymal cell types. In addition, the recent development of liver organoid culture systems can provide a strategy for the enhanced expansion of therapeutically relevant cell types. Here, we discuss advances in engineering approaches for constructing in vitro human liver models that have utility in drug screening and for determining microenvironmental determinants of liver cell differentiation/function. Design features and validation data of representative models are presented to highlight major trends followed by the discussion of pending issues that need to be addressed. Overall, bioengineered liver models have significantly advanced our understanding of liver function and injury, which will prove useful for drug development and ultimately cell-based therapies.
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Key Words
- 3D, 3-dimensional
- BAL, bioartificial liver
- Bioprinting
- CRP, C-reactive protein
- CYP450, cytochrome P450
- Cellular Microarrays
- DILI, drug-induced liver injury
- ECM, extracellular matrix
- HSC, hepatic stellate cell
- Hepatocytes
- IL, interleukin
- KC, Kupffer cell
- LSEC, liver sinusoidal endothelial cell
- MPCC, micropatterned co-culture
- Microfluidics
- Micropatterned Co-Cultures
- NPC, nonparenchymal cell
- PEG, polyethylene glycol
- PHH, primary human hepatocyte
- Spheroids
- iHep, induced pluripotent stem cell-derived human hepatocyte-like cell
- iPS, induced pluripotent stem
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Affiliation(s)
- Gregory H. Underhill
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, Illinois
| | - Salman R. Khetani
- Department of Bioengineering, University of Illinois at Chicago, Chicago, Illinois
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Czeisler C, Short A, Nelson T, Gygli P, Ortiz C, Catacutan FP, Stocker B, Cronin J, Lannutti J, Winter J, Otero JJ. Surface topography during neural stem cell differentiation regulates cell migration and cell morphology. J Comp Neurol 2016; 524:3485-3502. [PMID: 27418162 DOI: 10.1002/cne.24078] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Revised: 07/08/2016] [Accepted: 07/08/2016] [Indexed: 12/13/2022]
Abstract
We sought to determine the contribution of scaffold topography to the migration and morphology of neural stem cells by mimicking anatomical features of scaffolds found in vivo. We mimicked two types of central nervous system scaffolds encountered by neural stem cells during development in vitro by constructing different diameter electrospun polycaprolactone (PCL) fiber mats, a substrate that we have shown to be topographically similar to brain scaffolds. We compared the effects of large fibers (made to mimic blood vessel topography) with those of small-diameter fibers (made to mimic radial glial process topography) on the migration and differentiation of neural stem cells. Neural stem cells showed differential migratory and morphological reactions with laminin in different topographical contexts. We demonstrate, for the first time, that neural stem cell biological responses to laminin are dependent on topographical context. Large-fiber topography without laminin prevented cell migration, which was partially reversed by treatment with rock inhibitor. Cell morphology complexity assayed by fractal dimension was inhibited in nocodazole- and cytochalasin-D-treated neural precursor cells in large-fiber topography, but was not changed in small-fiber topography with these inhibitors. These data indicate that cell morphology has different requirements on cytoskeletal proteins dependent on the topographical environment encountered by the cell. We propose that the physical structure of distinct scaffolds induces unique signaling cascades that regulate migration and morphology in embryonic neural precursor cells. J. Comp. Neurol. 524:3485-3502, 2016. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Catherine Czeisler
- Department of Pathology, Division of Neuropathology, The Ohio State University College of Medicine, Columbus, Ohio, 43210
| | - Aaron Short
- Department of Biomedical Engineering, The Ohio State University College of Engineering, Columbus, Ohio, 43210
| | - Tyler Nelson
- Department of Biomedical Engineering, The Ohio State University College of Engineering, Columbus, Ohio, 43210
| | - Patrick Gygli
- Department of Pathology, Division of Neuropathology, The Ohio State University College of Medicine, Columbus, Ohio, 43210
| | - Cristina Ortiz
- Department of Pathology, Division of Neuropathology, The Ohio State University College of Medicine, Columbus, Ohio, 43210
| | - Fay Patsy Catacutan
- Department of Pathology, Division of Neuropathology, The Ohio State University College of Medicine, Columbus, Ohio, 43210
| | - Ben Stocker
- Department of Pathology, Division of Neuropathology, The Ohio State University College of Medicine, Columbus, Ohio, 43210
| | - James Cronin
- Department of Pathology, Division of Neuropathology, The Ohio State University College of Medicine, Columbus, Ohio, 43210
| | - John Lannutti
- Department of Materials Science and Engineering, the Ohio State University College of Engineering, Columbus, Ohio, 43210
| | - Jessica Winter
- Department of Biomedical Engineering, The Ohio State University College of Engineering, Columbus, Ohio, 43210. .,William G. Lowrie Department of Chemical Engineering, The Ohio State University College of Engineering, Columbus, Ohio, 43210.
| | - José Javier Otero
- Department of Pathology, Division of Neuropathology, The Ohio State University College of Medicine, Columbus, Ohio, 43210.
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Lewis PL, Shah RN. 3D Printing for Liver Tissue Engineering: Current Approaches and Future Challenges. CURRENT TRANSPLANTATION REPORTS 2016. [DOI: 10.1007/s40472-016-0084-y] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Davitt CJ, Lavelle EC. Delivery strategies to enhance oral vaccination against enteric infections. Adv Drug Deliv Rev 2015; 91:52-69. [PMID: 25817337 DOI: 10.1016/j.addr.2015.03.007] [Citation(s) in RCA: 104] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2014] [Revised: 02/25/2015] [Accepted: 03/12/2015] [Indexed: 01/22/2023]
Abstract
While the majority of human pathogens infect the body through mucosal sites, most licensed vaccines are injectable. In fact the only mucosal vaccine that has been widely used globally for infant and childhood vaccination programs is the oral polio vaccine (OPV) developed by Albert Sabin in the 1950s. While oral vaccines against Cholera, rotavirus and Salmonella typhi have also been licensed, the development of additional non-living oral vaccines against these and other enteric pathogens has been slow and challenging. Mucosal vaccines can elicit protective immunity at the gut mucosa, in part via antigen-specific secretory immunoglobulin A (SIgA). However, despite their advantages over the injectable route, oral vaccines face many hurdles. A key challenge lies in design of delivery strategies that can protect antigens from degradation in the stomach and intestine, incorporate appropriate immune-stimulatory adjuvants and control release at the appropriate gastrointestinal site. A number of systems including micro and nanoparticles, lipid-based strategies and enteric capsules have significant potential either alone or in advanced combined formulations to enhance intestinal immune responses. In this review we will outline the opportunities, challenges and potential delivery solutions to facilitate the development of improved oral vaccines for infectious enteric diseases.
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Liu Y, Zhang L, Wei J, Yan S, Yu J, Li X. Promoting hepatocyte spheroid formation and functions by coculture with fibroblasts on micropatterned electrospun fibrous scaffolds. J Mater Chem B 2014; 2:3029-3040. [DOI: 10.1039/c3tb21779e] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Weiskirchen R, Weimer J, Meurer SK, Kron A, Seipel B, Vater I, Arnold N, Siebert R, Xu L, Friedman SL, Bergmann C. Genetic characteristics of the human hepatic stellate cell line LX-2. PLoS One 2013; 8:e75692. [PMID: 24116068 PMCID: PMC3792989 DOI: 10.1371/journal.pone.0075692] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2013] [Accepted: 08/20/2013] [Indexed: 01/01/2023] Open
Abstract
The human hepatic cell line LX-2 has been described as tool to study mechanisms of hepatic fibrogenesis and the testing of antifibrotic compounds. It was originally generated by immortalisation with the Simian Vacuolating Virus 40 (SV40) transforming (T) antigen and subsequent propagation in low serum conditions. Although this immortalized line is used in an increasing number of studies, detailed genetic characterisation has been lacking. We here have performed genetic characterisation of the LX-2 cell line and established a single-locus short tandem repeat (STR) profile for the cell line and characterized the LX-2 karyotype by several cytogenetic and molecular cytogenetic techniques. Spectral karyotyping (SKY) revealed a complex karyotype with a set of aberrations consistently present in the metaphases analyses which might serve as cytogenetic markers. In addition, various subclonal and single cell aberrations were detected. Our study provides criteria for genetic authentication of LX-2 and offers insights into the genotype changes which might underlie part of its phenotypic features.
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Affiliation(s)
- Ralf Weiskirchen
- Institute of Clinical Chemistry and Pathobiochemistry, RWTH Aachen University, Aachen, Germany
- * E-mail:
| | - Jörg Weimer
- Department of Gynaecology and Obstetrics, UKSH Campus Kiel, Kiel, Germany
| | - Steffen K. Meurer
- Institute of Clinical Chemistry and Pathobiochemistry, RWTH Aachen University, Aachen, Germany
| | - Anja Kron
- Center for Human Genetics, Bioscientia, Ingelheim, Germany
| | - Barbara Seipel
- Center for Human Genetics, Bioscientia, Ingelheim, Germany
| | - Inga Vater
- Institute of Human Genetics, University Hospital Schleswig-Holstein & Christian-Albrechts University Kiel, Kiel, Germany
| | - Norbert Arnold
- Department of Gynaecology and Obstetrics, UKSH Campus Kiel, Kiel, Germany
| | - Reiner Siebert
- Institute of Human Genetics, University Hospital Schleswig-Holstein & Christian-Albrechts University Kiel, Kiel, Germany
| | - Lieming Xu
- Institute of Liver Diseases, Shanghai University of Traditional Chinese Medicine Shuguang Hospital, Shanghai, PR China
| | - Scott L. Friedman
- Division of Liver Diseases, Mount Sinai School of Medicine, New York, New York, United States of America
| | - Carsten Bergmann
- Center for Human Genetics, Bioscientia, Ingelheim, Germany
- Department of Human Genetics, RWTH Aachen University, Aachen, Germany
- Center for Clinical Research, University Hospital Freiburg, Freiburg, Germany
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Zhou J, Wu Y, Lee SK, Fan R. High-content single-cell analysis on-chip using a laser microarray scanner. LAB ON A CHIP 2012; 12:5025-5033. [PMID: 22991099 DOI: 10.1039/c2lc40309a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
High-content cellomic analysis is a powerful tool for rapid screening of cellular responses to extracellular cues and examination of intracellular signal transduction pathways at the single-cell level. In conjunction with microfluidics technology that provides unique advantages in sample processing and precise control of fluid delivery, it holds great potential to transform lab-on-a-chip systems for high-throughput cellular analysis. However, high-content imaging instruments are expensive, sophisticated, and not readily accessible. Herein, we report on a laser scanning cytometry approach that exploits a bench-top microarray scanner as an end-point reader to perform rapid and automated fluorescence imaging of cells cultured on a chip. Using high-content imaging analysis algorithms, we demonstrated multiplexed measurements of morphometric and proteomic parameters from all single cells. Our approach shows the improvement of both sensitivity and dynamic range by two orders of magnitude as compared to conventional epifluorescence microscopy. We applied this technology to high-throughput analysis of mesenchymal stem cells on an extracellular matrix protein array and characterization of heterotypic cell populations. This work demonstrates the feasibility of a laser microarray scanner for high-content cellomic analysis and opens up new opportunities to conduct informative cellular analysis and cell-based screening in the lab-on-a-chip systems.
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Affiliation(s)
- Jing Zhou
- Department of Anesthesiology, Yale School of Medicine, New Haven, CT 06520, USA
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Underhill GH, Peter G, Chen CS, Bhatia SN. Bioengineering Methods for Analysis of Cells In Vitro. Annu Rev Cell Dev Biol 2012; 28:385-410. [DOI: 10.1146/annurev-cellbio-101011-155709] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | - Galie Peter
- Department of Bioengineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104
| | - Christopher S. Chen
- Department of Bioengineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104
| | - Sangeeta N. Bhatia
- Division of Health Sciences and Technology,
- Department of Electrical Engineering and Computer Science,
- The Howard Hughes Medical Institute, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139;
- Division of Medicine, Brigham and Women's Hospital, Boston, Massachusetts 02115
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Anderson DE, Hinds MT. Extracellular matrix production and regulation in micropatterned endothelial cells. Biochem Biophys Res Commun 2012; 427:159-64. [DOI: 10.1016/j.bbrc.2012.09.034] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2012] [Accepted: 09/07/2012] [Indexed: 12/21/2022]
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Underhill GH. Stem cell bioengineering at the interface of systems-based models and high-throughput platforms. WILEY INTERDISCIPLINARY REVIEWS-SYSTEMS BIOLOGY AND MEDICINE 2012; 4:525-45. [DOI: 10.1002/wsbm.1189] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Abstract
Mucosal surfaces are a major portal of entry for many human pathogens that are the cause of infectious diseases worldwide. Vaccines capable of eliciting mucosal immune responses can fortify defenses at mucosal front lines and protect against infection. However, most licensed vaccines are administered parenterally and fail to elicit protective mucosal immunity. Immunization by mucosal routes may be more effective at inducing protective immunity against mucosal pathogens at their sites of entry. Recent advances in our understanding of mucosal immunity and identification of correlates of protective immunity against specific mucosal pathogens have renewed interest in the development of mucosal vaccines. Efforts have focused on efficient delivery of vaccine antigens to mucosal sites that facilitate uptake by local antigen-presenting cells to generate protective mucosal immune responses. Discovery of safe and effective mucosal adjuvants are also being sought to enhance the magnitude and quality of the protective immune response.
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Affiliation(s)
- Kim A Woodrow
- Department of Bioengineering, University of Washington, Seattle, Washington 98195, USA.
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Characterization and hepatocytes adhesion of galactosylated poly(D,L-lactic-co-glycolic acid) surface. Macromol Res 2011. [DOI: 10.1007/s13233-012-0005-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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14
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Endothelial cell micropatterning: methods, effects, and applications. Ann Biomed Eng 2011; 39:2329-45. [PMID: 21761242 DOI: 10.1007/s10439-011-0352-z] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2011] [Accepted: 07/02/2011] [Indexed: 01/08/2023]
Abstract
The effects of flow on endothelial cells (ECs) have been widely examined for the ability of fluid shear stress to alter cell morphology and function; however, the effects of EC morphology without flow have only recently been observed. An increase in lithographic techniques in cell culture spurred a corresponding increase in research aiming to confine cell morphology. These studies lead to a better understanding of how morphology and cytoskeletal configuration affect the structure and function of the cells. This review examines EC micropatterning research by exploring both the many alternative methods used to alter EC morphology and the resulting changes in cellular shape and phenotype. Micropatterning induced changes in EC proliferation, apoptosis, cytoskeletal organization, mechanical properties, and cell functionality. Finally, the ways these cellular manipulation techniques have been applied to biomedical engineering research, including angiogenesis, cell migration, and tissue engineering, are discussed.
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Hsieh CH, Wang JL, Huang YY. Large-scale cultivation of transplantable dermal papilla cellular aggregates using microfabricated PDMS arrays. Acta Biomater 2011; 7:315-24. [PMID: 20728585 DOI: 10.1016/j.actbio.2010.08.012] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2010] [Revised: 08/14/2010] [Accepted: 08/16/2010] [Indexed: 01/14/2023]
Abstract
In this work we have developed a strategy for cultivating dermal papilla (DP) cells to form multiple arrayed spheroidal microtissues for transplantation on a micropatterned polydimethylsiloxane (PDMS)-based tissue culture polystyrene (TCPS) plate system. We also describe the behavior of dermal papilla cells on this platform and the spontaneous formation of spheroidal microtissues by DP cells. We used a hydrophobic PDMS arrayed chip as a master to separate the seeded cells in the TCPS culture plate. By controlling the cell seeding densities, a microwell with arrayed DP spheroidal microtissues was easily formed. Formation of DP microtissues was associated with overlapping multilayered cells on the microwells and low cell-substrate adhesivity on the PDMS film. The microwell environment enhanced the aggregation of DP cells into spheroidal microtissues on the TCPS culture plate. The spheroidal microtissues preserved their hair induction potential in vitro and in vivo. A large quantity of DP spheroidal microtissues could be obtained rapidly and simply using this platform. We could harvest hundreds of DP microtissues (352 microtissues) with a cell seeding density of 1×10⁶ cells well⁻¹ after 3 days cultivation in one well of a 24-well plate. This is the first demonstration of the formation of DP spheres in large quantitites.
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Affiliation(s)
- Chin-Hsiung Hsieh
- Institute of Biomedical Engineering, National Taiwan University, Taipei, Taiwan
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Patterned PDMS based cell array system: a novel method for fast cell array fabrication. Biomed Microdevices 2010; 12:897-905. [DOI: 10.1007/s10544-010-9444-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Kung JWC, Forbes SJ. Stem cells and liver repair. Curr Opin Biotechnol 2010; 20:568-74. [PMID: 19837579 DOI: 10.1016/j.copbio.2009.09.004] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2009] [Accepted: 09/16/2009] [Indexed: 12/20/2022]
Abstract
The liver has considerable inherent regenerative capacity through hepatocyte division and hepatic progenitor cell proliferation. In chronic disease regeneration eventually fails and liver transplantation is the only curative treatment. Current work aims to restore liver mass and functionality either through transplantation of stem cell derived hepatocyte-like cells or by stimulating endogenous liver repair. Human embryonic stem cells (ESCs) and adult somatic cells can be differentiated into hepatocyte-like cells with potential use in drug testing, bio-artificial livers and transplantation. These cells still have some limitations in functionality, understanding further human liver development and improving tissue culture is required. The use of stem cells and their progeny in animal models of liver disease has been encouraging and stimulated clinical trials to commence.
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Affiliation(s)
- Janet W C Kung
- MRC Centre for Regenerative Medicine, Chancellor's Building, 49 Little France Crescent, Edinburgh EH16 4SB, United Kingdom
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Szidonya J, Farkas T, Pali T. The fatty acid constitution and ordering state of membranes in dominant temperature-sensitive lethal mutation and wild-type Drosophila melanogaster larvae. Biochem Genet 1990; 5:26-32. [PMID: 2168167 DOI: 10.1007/s11684-011-0107-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2010] [Accepted: 12/23/2010] [Indexed: 01/11/2023]
Abstract
The ordering state and changes in fatty acid composition of microsomal (MS) and mitochondrial (MC) membranes of two dominant temperature-sensitive (DTS) lethal mutations and the wild-type Oregon-R strain larvae of Drosophila melanogaster have been studied at 18 and 29 degrees C and after temperature-shift experiments. The membranes of wild-type larvae have a stable ordering state, with "S" values between 0.6 (18 degrees C) and 0.5 (29 degrees C) in both membranes which remained unchanged in shift experiments, although the ratios of saturated/unsaturated fatty acids were changed as expected. The strongly DTS mutation 1(2) 10DTS forms very rigid membranes at the restrictive temperature (29 degrees C) which cannot be normalized after shift down, while shift up or development at the permissive temperature results in normal ordering state. This mutant is less able to adjust MS and MC fatty acid composition in response to the growth temperature than the wild type. The less temperature-sensitive 1(2)2DTS allele occupies an intermediate state between Oregon-R and 1(2)10DTS in both respects. We assume and the genetical data suggest that the DTS mutant gene product is in competition with the wild-type product, resulting in a membrane structure which is not able to accommodate to the restrictive temperature.
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Affiliation(s)
- J Szidonya
- Institute of Genetics, Hungarian Academy of Sciences, Szeged
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