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Chen L, Wang Z, Fu X, Wang S, Feng Y, Coudyzer W, Wu S, Zhang H, Chai Z, Li Y, Ni Y. Dynamic 3D morphology of chick embryos and allantois depicted nondestructively by 3.0T clinical magnetic resonance imaging. Poult Sci 2023; 102:102902. [PMID: 37429051 PMCID: PMC10466300 DOI: 10.1016/j.psj.2023.102902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 06/19/2023] [Accepted: 06/24/2023] [Indexed: 07/12/2023] Open
Abstract
Driven by a global trend of applying replace-reduce-refine or 3Rs' guidance for experimental animals in life sciences, chick embryo and particularly allantois with its chorioallantoic membrane have been increasingly utilized to substitute laboratory animals, which call for more extensive and updated knowledge about this novel experimental setup. In this study, being noninvasive, nonionizing, and super-contrasting with high spatiotemporal resolutions, magnetic resonance imaging (MRI) was chosen as an imaging modality for in ovo monitoring morphologic evolution of the chick embryo, allantois, and chorioallantoic membrane longitudinally throughout embryonic day (ED) 1 until ED20. Cooled in 0°C ice bath for 60 min to reduce MRI motion artifacts, 3 chick embryos (n = 60 in total) on each ED were scanned by a clinical 3.0T MRI scanner to demonstrate 3D images of both T2- and T1-weighted imaging (T2WI, T1WI) sequences at axial, sagittal, and coronal slices. The volumes of both the entire chick embryo and allantois were semi-automatically segmented based on intensity-based thresholding and region-growing algorithms. The morphometries or quantified 3D structures were achieved by refined segmentation, and confirmed by histological analyses (one for each ED). After MRI, the rest of chick embryos (n = 40) continued for incubation. The images from ED2 to ED4 could demonstrate the structural changes of latebra, suggesting its transition into a nutrient supplying channel of yolk sac. The allantois could be recognized by MRI, and its relative volumes on each ED revealed an evolving profile peaked on ED12, with a statistically significant difference from those of earlier and later EDs (P < 0.01). The hypointensity of the yolk due to the susceptibility effect of its enriched iron content overshadowed the otherwise hyperintensity of its lipid components. The chick embryos survived prior cooling and MRI till hatching on ED21. The results could be further developed into a 3D MRI atlas of chick embryo. Clinical 3.0T MRI proved effective as a noninvasive approach to study in ovo 3D embryonic development across the full period (ED1-ED20), which can complement the present knowhow for poultry industry and biomedical science.
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Affiliation(s)
- Lei Chen
- KU Leuven, Campus Gasthuisberg, Leuven 3000, Belgium
| | | | - Xubin Fu
- Tianjin Ringpu Bio-Technology Co., Ltd., Tianjin, China
| | - Shuncong Wang
- KU Leuven, Campus Gasthuisberg, Leuven 3000, Belgium
| | - Yuanbo Feng
- KU Leuven, Campus Gasthuisberg, Leuven 3000, Belgium
| | | | - Shugeng Wu
- Key Laboratory of Feed Biotechnology of Ministry of Agriculture & Rural Affairs, Institute of Feed Research, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Haijun Zhang
- Key Laboratory of Feed Biotechnology of Ministry of Agriculture & Rural Affairs, Institute of Feed Research, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Zhihong Chai
- Shanghai Key Laboratory of Molecular Imaging, Shanghai University of Medicine and Health Sciences, Shanghai, China
| | - Yue Li
- Shanghai Key Laboratory of Molecular Imaging, Shanghai University of Medicine and Health Sciences, Shanghai, China
| | - Yicheng Ni
- Department of Radiology, Zhongda Hospital, Southeast University, Nanjing, China
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Chen L, Yuan M, Zhang X, Li Y, Feng Y, Yu J, Coudyzer W, Xie Y, Xu J, Li Y, Li Y, Ni Y. Exploration of Chick Embryo and Chorioallantoic Membrane on Imaging Navigated Platforms for Anticancer Pharmaceutical Evaluations. Technol Cancer Res Treat 2023; 22:15330338231206985. [PMID: 37844882 PMCID: PMC10585999 DOI: 10.1177/15330338231206985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 08/29/2023] [Accepted: 09/25/2023] [Indexed: 10/18/2023] Open
Abstract
Conforming to the current replace-reduce-refine 3Rs' guidelines in animal experiments, a series of explorative efforts have been made to set up operable biomedical imaging-guided platforms for qualitative and quantitative evaluations on pharmacological effects of tumor vascular-disrupting agents (VDAs), based on the chick embryos (CEs) with its chorioallantoic membrane (CAM), in this overview. The techniques and platforms have been hierarchically elaborated, from macroscopic to microscopic and from overall to specific aspects. A protocol of LED lamplight associated with a new deep-learning algorithm was consolidated to screen out weak CEs by using the CAM vasculature imaging. 3D magnetic resonance imaging (MRI) and laser speckle contrast imaging (LSCI) to monitor the evolution of CE and vascular changes in CAM are introduced. A LSCI-CAM platform for studying the effects of VDAs on normal and cancerous vasculature of CAM and possible molecular mechanisms has been demonstrated. Finally, practical challenges and future perspectives are highlighted. The aim of this article is to help peers in biomedical research to familiarize with the CAM platform and to optimize imaging protocols for the evaluation of vasoactive pharmaceuticals, especially anticancer vascular targeted therapy.
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Affiliation(s)
- Lei Chen
- KU Leuven, Biomedical Group, Leuven, Belgium
| | - Mingyuan Yuan
- Department of Radiology, Shanghai University of Medicine & Health Sciences Affiliated Zhoupu Hospital, Shanghai, China
| | - Xinqi Zhang
- Airport Division, Tianjin Cancer Hospital, Tianjin, China
| | - Yongsheng Li
- Airport Division, Tianjin Cancer Hospital, Tianjin, China
| | - Yuanbo Feng
- KU Leuven, Biomedical Group, Leuven, Belgium
| | - Jie Yu
- KU Leuven, Biomedical Group, Leuven, Belgium
| | - Walter Coudyzer
- Department of Radiology, University Hospitals Leuven, KU Leuven, Leuven, Belgium
| | - Yiyang Xie
- Shanghai Key Laboratory of Molecular Imaging, Shanghai University of Medicine and Health Sciences, Shanghai, China
| | - Jiayue Xu
- Shanghai Key Laboratory of Molecular Imaging, Shanghai University of Medicine and Health Sciences, Shanghai, China
| | - Yuzhen Li
- Shanghai Key Laboratory of Molecular Imaging, Shanghai University of Medicine and Health Sciences, Shanghai, China
| | - Yue Li
- Shanghai Key Laboratory of Molecular Imaging, Shanghai University of Medicine and Health Sciences, Shanghai, China
| | - Yicheng Ni
- KU Leuven, Biomedical Group, Leuven, Belgium
- Department of Radiology, Zhongda Hospital, Southeast University, Nanjing, China
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Wang Y, Zhang J, Qiu Z, Zeng B, Zhang Y, Wang X, Chen J, Zhong C, Deng R, Fan C. Transcriptome and structure analysis in root of Casuarina equisetifolia under NaCl treatment. PeerJ 2021; 9:e12133. [PMID: 34616610 PMCID: PMC8464194 DOI: 10.7717/peerj.12133] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Accepted: 08/18/2021] [Indexed: 01/23/2023] Open
Abstract
Background High soil salinity seriously affects plant growth and development. Excessive salt ions mainly cause damage by inducing osmotic stress, ion toxicity, and oxidation stress. Casuarina equisetifolia is a highly salt-tolerant plant, commonly grown as wind belts in coastal areas with sandy soils. However, little is known about its physiology and the molecular mechanism of its response to salt stress. Results Eight-week-old C. equisetifolia seedlings grown from rooted cuttings were exposed to salt stress for varying durations (0, 1, 6, 24, and 168 h under 200 mM NaCl) and their ion contents, cellular structure, and transcriptomes were analyzed. Potassium concentration decreased slowly between 1 h and 24 h after initiation of salt treatment, while the content of potassium was significantly lower after 168 h of salt treatment. Root epidermal cells were shed and a more compact layer of cells formed as the treatment duration increased. Salt stress led to deformation of cells and damage to mitochondria in the epidermis and endodermis, whereas stele cells suffered less damage. Transcriptome analysis identified 10,378 differentially expressed genes (DEGs), with more genes showing differential expression after 24 h and 168 h of exposure than after shorter durations of exposure to salinity. Signal transduction and ion transport genes such as HKT and CHX were enriched among DEGs in the early stages (1 h or 6 h) of salt stress, while expression of genes involved in programmed cell death was significantly upregulated at 168 h, corresponding to changes in ion contents and cell structure of roots. Oxidative stress and detoxification genes were also expressed differentially and were enriched among DEGs at different stages. Conclusions These results not only elucidate the mechanism and the molecular pathway governing salt tolerance, but also serve as a basis for identifying gene function related to salt stress in C. equisetifolia.
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Affiliation(s)
- Yujiao Wang
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of State Forestry and Grassland Administration on Tropical Forestry, Research Institute of Tropical Forestry, Chinese Academy of Forestry, Guangzhou, China
| | - Jin Zhang
- State Key Laboratory of Subtropical Silviculture, School of Forestry and Biotechnology, Zhejiang A&F University, Hangzhou, Zhejiang, China
| | - Zhenfei Qiu
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of State Forestry and Grassland Administration on Tropical Forestry, Research Institute of Tropical Forestry, Chinese Academy of Forestry, Guangzhou, China
| | - Bingshan Zeng
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of State Forestry and Grassland Administration on Tropical Forestry, Research Institute of Tropical Forestry, Chinese Academy of Forestry, Guangzhou, China
| | - Yong Zhang
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of State Forestry and Grassland Administration on Tropical Forestry, Research Institute of Tropical Forestry, Chinese Academy of Forestry, Guangzhou, China
| | - Xiaoping Wang
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of State Forestry and Grassland Administration on Tropical Forestry, Research Institute of Tropical Forestry, Chinese Academy of Forestry, Guangzhou, China
| | - Jun Chen
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of State Forestry and Grassland Administration on Tropical Forestry, Research Institute of Tropical Forestry, Chinese Academy of Forestry, Guangzhou, China
| | - Chonglu Zhong
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of State Forestry and Grassland Administration on Tropical Forestry, Research Institute of Tropical Forestry, Chinese Academy of Forestry, Guangzhou, China
| | - Rufang Deng
- South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
| | - Chunjie Fan
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of State Forestry and Grassland Administration on Tropical Forestry, Research Institute of Tropical Forestry, Chinese Academy of Forestry, Guangzhou, China
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Harari-Steinberg O, Omer D, Gnatek Y, Pleniceanu O, Goldberg S, Cohen-Zontag O, Pri-Chen S, Kanter I, Ben Haim N, Becker E, Ankawa R, Fuchs Y, Kalisky T, Dotan Z, Dekel B. Ex Vivo Expanded 3D Human Kidney Spheres Engraft Long Term and Repair Chronic Renal Injury in Mice. Cell Rep 2021; 30:852-869.e4. [PMID: 31968258 DOI: 10.1016/j.celrep.2019.12.047] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2019] [Revised: 10/04/2019] [Accepted: 12/12/2019] [Indexed: 12/26/2022] Open
Abstract
End-stage renal disease is a worldwide epidemic requiring renal replacement therapy. Harvesting tissue from failing kidneys and autotransplantation of tissue progenitors could theoretically delay the need for dialysis. Here we use healthy and end-stage human adult kidneys to robustly expand proliferative kidney epithelial cells and establish 3D kidney epithelial cultures termed "nephrospheres." Formation of nephrospheres reestablishes renal identity and function in primary cultures. Transplantation into NOD/SCID mice shows that nephrospheres restore self-organogenetic properties lost in monolayer cultures, allowing long-term engraftment as tubular structures, potentially adding nephron segments and demonstrating self-organization as critical to survival. Furthermore, long-term tubular engraftment of nephrospheres is functionally beneficial in murine models of chronic kidney disease. Remarkably, nephrospheres inhibit pro-fibrotic collagen production in cultured fibroblasts via paracrine modulation, while transplanted nephrospheres induce transcriptional signatures of proliferation and release from quiescence, suggesting re-activation of endogenous repair. These data support the use of human nephrospheres for renal cell therapy.
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Affiliation(s)
- Orit Harari-Steinberg
- Pediatric Stem Cell Research Institute, Edmond and Lily Sara Children's Hospital, Sheba Medical Center, Tel Hashomer, Ramat-Gan, Israel; Pediatric Research Center for Genetics, Development and Environment, Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Dorit Omer
- Pediatric Stem Cell Research Institute, Edmond and Lily Sara Children's Hospital, Sheba Medical Center, Tel Hashomer, Ramat-Gan, Israel; Pediatric Research Center for Genetics, Development and Environment, Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Yehudit Gnatek
- Pediatric Stem Cell Research Institute, Edmond and Lily Sara Children's Hospital, Sheba Medical Center, Tel Hashomer, Ramat-Gan, Israel; Pediatric Research Center for Genetics, Development and Environment, Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Oren Pleniceanu
- Pediatric Stem Cell Research Institute, Edmond and Lily Sara Children's Hospital, Sheba Medical Center, Tel Hashomer, Ramat-Gan, Israel; Pediatric Research Center for Genetics, Development and Environment, Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Sanja Goldberg
- Pediatric Stem Cell Research Institute, Edmond and Lily Sara Children's Hospital, Sheba Medical Center, Tel Hashomer, Ramat-Gan, Israel; Pediatric Research Center for Genetics, Development and Environment, Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Osnat Cohen-Zontag
- Pediatric Stem Cell Research Institute, Edmond and Lily Sara Children's Hospital, Sheba Medical Center, Tel Hashomer, Ramat-Gan, Israel; Pediatric Research Center for Genetics, Development and Environment, Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Sara Pri-Chen
- The Maurice and Gabriela Goldschleger Eye Research Institute, Sheba Medical Center, Ramat-Gan, Israel
| | - Itamar Kanter
- Faculty of Engineering and Bar-Ilan Institute of Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat-Gan, Israel
| | - Nissim Ben Haim
- Faculty of Engineering and Bar-Ilan Institute of Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat-Gan, Israel
| | - Eli Becker
- Faculty of Engineering and Bar-Ilan Institute of Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat-Gan, Israel
| | - Roi Ankawa
- Laboratory of Stem Cell Biology and Regenerative Medicine, Department of Biology, Technion - Israel Institute of Technology, Haifa, Israel
| | - Yaron Fuchs
- Laboratory of Stem Cell Biology and Regenerative Medicine, Department of Biology, Technion - Israel Institute of Technology, Haifa, Israel
| | - Tomer Kalisky
- Faculty of Engineering and Bar-Ilan Institute of Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat-Gan, Israel
| | - Zohar Dotan
- Department of Urology, Sheba Medical Center, Tel Hashomer, Ramat-Gan, Israel; Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Benjamin Dekel
- Pediatric Stem Cell Research Institute, Edmond and Lily Sara Children's Hospital, Sheba Medical Center, Tel Hashomer, Ramat-Gan, Israel; Pediatric Research Center for Genetics, Development and Environment, Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel; Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel; Division of Pediatric Nephrology, Safra Children's Hospital, Sheba Medical Center, Ramat-Gan, Israel.
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Utilisation of Chick Embryo Chorioallantoic Membrane as a Model Platform for Imaging-Navigated Biomedical Research. Cells 2021; 10:cells10020463. [PMID: 33671534 PMCID: PMC7926796 DOI: 10.3390/cells10020463] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 02/15/2021] [Accepted: 02/19/2021] [Indexed: 02/07/2023] Open
Abstract
The fertilised chick egg and particularly its chorioallantoic membrane (CAM) have drawn continuing interest in biomedicine and bioengineering fields, especially for research on vascular study, cancer, drug screening and development, cell factors, stem cells, etc. This literature review systemically introduces the CAM's structural evolution, functions, vascular features and the circulation system, and cell regulatory factors. It also presents the major and updated applications of the CAM in assays for pharmacokinetics and biodistribution, drug efficacy and toxicology testing/screening in preclinical pharmacological research. The time course of CAM applications for different assays and their advantages and limitations are summarised. Among these applications, two aspects are emphasised: (1) potential utility of the CAM for preclinical studies on vascular-disrupting agents (VDAs), promising for anti-cancer vascular-targeted therapy, and (2) modern imaging technologies, including modalities and their applications for real-time visualisation, monitoring and evaluation of the changes in CAM vasculature as well as the interactions occurring after introducing the tested medical, pharmaceutical and biological agents into the system. The aim of this article is to help those working in the biomedical field to familiarise themselves with the chick embryo CAM as an alternative platform and to utilise it to design and optimise experimental settings for their specific research topics.
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Burggren W, Rojas Antich M. Angiogenesis in the Avian Embryo Chorioallantoic Membrane: A Perspective on Research Trends and a Case Study on Toxicant Vascular Effects. J Cardiovasc Dev Dis 2020; 7:jcdd7040056. [PMID: 33291457 PMCID: PMC7762154 DOI: 10.3390/jcdd7040056] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 11/23/2020] [Accepted: 12/02/2020] [Indexed: 02/07/2023] Open
Abstract
The chorioallantoic membrane (CAM) of the avian embryo is an intrinsically interesting gas exchange and osmoregulation organ. Beyond study by comparative biologists, however, the CAM vascular bed has been the focus of translational studies by cardiovascular life scientists interested in the CAM as a model for probing angiogenesis, heart development, and physiological functions. In this perspective article, we consider areas of cardiovascular research that have benefited from studies of the CAM, including the themes of investigation of the CAM's hemodynamic influence on heart and central vessel development, use of the CAM as a model vascular bed for studying angiogenesis, and the CAM as an assay tool. A case study on CAM vascularization effects of very low doses of crude oil as a toxicant is also presented that embraces some of these themes, showing the induction of subtle changes in the pattern of the CAM vasculature growth that are not readily observed by standard vascular assessment methodologies. We conclude by raising several questions in the area of CAM research, including the following: (1) Do changes in patterns of CAM growth, as opposed to absolute CAM growth, have biological significance?; (2) How does the relative amount of CAM vascularization compared to the embryo per se change during development?; and (3) Is the CAM actually representative of the mammalian systemic vascular beds that it is presumed to model?
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Ribatti D. The chick embryo chorioallantoic membrane (CAM). A multifaceted experimental model. Mech Dev 2016; 141:70-77. [DOI: 10.1016/j.mod.2016.05.003] [Citation(s) in RCA: 157] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Revised: 05/07/2016] [Accepted: 05/09/2016] [Indexed: 01/24/2023]
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Kolitz-Domb M, Corem-Salkmon E, Grinberg I, Margel S. Synthesis and characterization of bioactive conjugated near-infrared fluorescent proteinoid-poly(L-lactic acid) hollow nanoparticles for optical detection of colon cancer. Int J Nanomedicine 2014; 9:5041-53. [PMID: 25382975 PMCID: PMC4222710 DOI: 10.2147/ijn.s68582] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Colon cancer is one of the major causes of death in the Western world. Early detection significantly improves long-term survival for patients with colon cancer. Near-infrared (NIR) fluorescent nanoparticles are promising candidates for use as contrast agents for tumor detection. Using NIR offers several advantages for bioimaging compared with fluorescence in the visible spectrum: lower autofluorescence of biological tissues and lower absorbance and, consequently, deeper penetration into biomatrices. The present study describes the preparation of new NIR fluorescent proteinoid-poly(L-lactic acid) (PLLA) nanoparticles. For this purpose, a P(EF-PLLA) random copolymer was prepared by thermal copolymerization of L-glutamic acid (E) with L-phenylalanine (F) and PLLA. Under suitable conditions, this proteinoid-PLLA copolymer can self-assemble to nanosized hollow particles of relatively narrow size distribution. This self-assembly process was used for encapsulation of the NIR dye indocyanine green. The encapsulation process increases significantly the photostability of the dye. These NIR fluorescent nanoparticles were found to be stable and nontoxic. Leakage of the NIR dye from these nanoparticles into phosphate-buffered saline containing 4% human serum albumin was not detected. Tumor-targeting ligands such as peanut agglutinin and anticarcinoembryonic antigen antibodies were covalently conjugated to the surface of the NIR fluorescent P(EF-PLLA) nanoparticles, thereby increasing the fluorescent signal of tumors with upregulated corresponding receptors. Specific colon tumor detection by the NIR fluorescent P(EF-PLLA) nanoparticles was demonstrated in a chicken embryo model. In future work, we plan to extend this study to a mouse model, as well as to encapsulate a cancer drug such as doxorubicin within these nanoparticles for therapeutic applications.
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Affiliation(s)
- Michal Kolitz-Domb
- Institute of Nanotechnology and Advanced Materials, Department of Chemistry, Bar-Ilan University, Ramat Gan, Israel
| | - Enav Corem-Salkmon
- Institute of Nanotechnology and Advanced Materials, Department of Chemistry, Bar-Ilan University, Ramat Gan, Israel
| | - Igor Grinberg
- Institute of Nanotechnology and Advanced Materials, Department of Chemistry, Bar-Ilan University, Ramat Gan, Israel
| | - Shlomo Margel
- Institute of Nanotechnology and Advanced Materials, Department of Chemistry, Bar-Ilan University, Ramat Gan, Israel
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The chicken chorioallantoic membrane model in biology, medicine and bioengineering. Angiogenesis 2014; 17:779-804. [PMID: 25138280 DOI: 10.1007/s10456-014-9440-7] [Citation(s) in RCA: 289] [Impact Index Per Article: 28.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Accepted: 08/13/2014] [Indexed: 01/16/2023]
Abstract
The chicken chorioallantoic membrane (CAM) is a simple, highly vascularized extraembryonic membrane, which performs multiple functions during embryonic development, including but not restricted to gas exchange. Over the last two decades, interest in the CAM as a robust experimental platform to study blood vessels has been shared by specialists working in bioengineering, development, morphology, biochemistry, transplant biology, cancer research and drug development. The tissue composition and accessibility of the CAM for experimental manipulation, makes it an attractive preclinical in vivo model for drug screening and/or for studies of vascular growth. In this article we provide a detailed review of the use of the CAM to study vascular biology and response of blood vessels to a variety of agonists. We also present distinct cultivation protocols discussing their advantages and limitations and provide a summarized update on the use of the CAM in vascular imaging, drug delivery, pharmacokinetics and toxicology.
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Dziedzic K, Pleniceanu O, Dekel B. Kidney stem cells in development, regeneration and cancer. Semin Cell Dev Biol 2014; 36:57-65. [PMID: 25128731 DOI: 10.1016/j.semcdb.2014.08.003] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Revised: 08/03/2014] [Accepted: 08/05/2014] [Indexed: 12/17/2022]
Abstract
The generation of nephrons during development depends on differentiation via a mesenchymal to epithelial transition (MET) of self-renewing, tissue-specific stem cells confined to a specific anatomic niche of the nephrogenic cortex. These cells may transform to generate oncogenic stem cells and drive pediatric renal cancer. Once nephron epithelia are formed the view of post-MET tissue renal growth and maintenance by adult tissue-specific epithelial stem cells becomes controversial. Recently, genetic lineage tracing that followed clonal evolution of single kidney cells showed that the need for new cells is constantly driven by fate-restricted unipotent clonal expansions in varying kidney segments arguing against a multipotent adult stem cell model. Lineage-restriction was similarly maintained in kidney organoids grown in culture. Importantly, kidney cells in which Wnt was activated were traced to give significant clonal progeny indicating a clonogenic hierarchy. In vivo nephron epithelia may be endowed with the capacity akin to that of unipotent epithelial stem/progenitor such that under specific stimuli can clonally expand/self renew by local proliferation of mature differentiated cells. Finding ways to ex vivo preserve and expand the observed in vivo kidney-forming capacity inherent to both the fetal and adult kidneys is crucial for taking renal regenerative medicine forward. Some of the strategies used to achieve this are sorting human fetal nephron stem/progenitor cells, growing adult nephrospheres or reprogramming differentiated kidney cells toward expandable renal progenitors.
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Affiliation(s)
- Klaudyna Dziedzic
- Pediatric Stem Cell Research Institute, Sheba Medical Center, Tel Hashomer, Israel; Sackler School of Medicine, Tel Aviv University, Israel
| | - Oren Pleniceanu
- Pediatric Stem Cell Research Institute, Sheba Medical Center, Tel Hashomer, Israel; Sackler School of Medicine, Tel Aviv University, Israel
| | - Benjamin Dekel
- Pediatric Stem Cell Research Institute, Sheba Medical Center, Tel Hashomer, Israel; Sackler School of Medicine, Tel Aviv University, Israel.
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Kolitz-Domb M, Grinberg I, Corem-Salkmon E, Margel S. Engineering of near infrared fluorescent proteinoid-poly(L-lactic acid) particles for in vivo colon cancer detection. J Nanobiotechnology 2014; 12:30. [PMID: 25113279 PMCID: PMC4237854 DOI: 10.1186/s12951-014-0030-z] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2014] [Accepted: 08/08/2014] [Indexed: 01/07/2023] Open
Abstract
Background The use of near-infrared (NIR) fluorescence imaging techniques has gained great interest for early detection of cancer owing to the negligible absorption and autofluorescence of water and other intrinsic biomolecules in this region. The main aim of the present study is to synthesize and characterize novel NIR fluorescent nanoparticles based on proteinoid and PLLA for early detection of colon tumors. Methods The present study describes the synthesis of new proteinoid-PLLA copolymer and the preparation of NIR fluorescent nanoparticles for use in diagnostic detection of colon cancer. These fluorescent nanoparticles were prepared by a self-assembly process in the presence of the NIR dye indocyanine green (ICG), a FDA-approved NIR fluorescent dye. Anti-carcinoembryonic antigen antibody (anti-CEA), a specific tumor targeting ligand, was covalently conjugated to the P(EF-PLLA) nanoparticles through the surface carboxylate groups using the carbodiimide activation method. Results and discussion The P(EF-PLLA) nanoparticles are stable in different conditions, no leakage of the encapsulated dye into PBS containing 4% HSA was detected. The encapsulation of the NIR fluorescent dye within the P(EF-PLLA) nanoparticles improves significantly the photostability of the dye. The fluorescent nanoparticles are non-toxic, and the biodistribution study in a mouse model showed they evacuate from the body over 24 h. Specific colon tumor detection in a chicken embryo model and a mouse model was demonstrated for anti-CEA-conjugated NIR fluorescent P(EF-PLLA) nanoparticles. Conclusions The results of this study suggest a significant advantage of NIR fluorescence imaging using NIR fluorescent P(EF-PLLA) nanoparticles over colonoscopy. In future work we plan to broaden this study by encapsulating cancer drugs such as paclitaxel and/or doxorubicin, within these biodegradable NIR fluorescent P(EF-PLLA) nanoparticles, for both detection and therapy of colon cancer.
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Yuan YJ, Xu K, Wu W, Luo Q, Yu JL. Application of the chick embryo chorioallantoic membrane in neurosurgery disease. Int J Med Sci 2014; 11:1275-81. [PMID: 25419173 PMCID: PMC4239148 DOI: 10.7150/ijms.10443] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2014] [Accepted: 10/13/2014] [Indexed: 11/26/2022] Open
Abstract
The chick embryo chorioallantoic membrane (CAM) is a highly vascularized extraembryonic membrane. Because of its ease of accessibility, extensive vascularization and immunodeficient environment, the CAM has been broadly used in the oncology, biology, pharmacy, and tissue regeneration research. The present review summarizes the application of the CAM in neurosurgery disease research. We focused on the use of the CAM as an assay for the research of glioma, vascular anomalies, Moyamoya Disease, and the blood-brain barrier.
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Affiliation(s)
- Yong-Jie Yuan
- Department of Neurosurgery, Jilin University First Hospital, Changchun 130021, China
| | - Kan Xu
- Department of Neurosurgery, Jilin University First Hospital, Changchun 130021, China
| | - Wei Wu
- Department of Neurosurgery, Jilin University First Hospital, Changchun 130021, China
| | - Qi Luo
- Department of Neurosurgery, Jilin University First Hospital, Changchun 130021, China
| | - Jin-Lu Yu
- Department of Neurosurgery, Jilin University First Hospital, Changchun 130021, China
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Harari-Steinberg O, Metsuyanim S, Omer D, Gnatek Y, Gershon R, Pri-Chen S, Ozdemir DD, Lerenthal Y, Noiman T, Ben-Hur H, Vaknin Z, Schneider DF, Aronow BJ, Goldstein RS, Hohenstein P, Dekel B. Identification of human nephron progenitors capable of generation of kidney structures and functional repair of chronic renal disease. EMBO Mol Med 2013; 5:1556-68. [PMID: 23996934 PMCID: PMC3799579 DOI: 10.1002/emmm.201201584] [Citation(s) in RCA: 87] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2012] [Revised: 07/29/2013] [Accepted: 07/31/2013] [Indexed: 12/14/2022] Open
Abstract
Identification of tissue-specific renal stem/progenitor cells with nephrogenic potential is a critical step in developing cell-based therapies for renal disease. In the human kidney, stem/progenitor cells are induced into the nephrogenic pathway to form nephrons until the 34 week of gestation, and no equivalent cell types can be traced in the adult kidney. Human nephron progenitor cells (hNPCs) have yet to be isolated. Here we show that growth of human foetal kidneys in serum-free defined conditions and prospective isolation of NCAM1(+) cells selects for nephron lineage that includes the SIX2-positive cap mesenchyme cells identifying a mitotically active population with in vitro clonogenic and stem/progenitor properties. After transplantation in the chick embryo, these cells-but not differentiated counterparts-efficiently formed various nephron tubule types. hNPCs engrafted and integrated in diseased murine kidneys and treatment of renal failure in the 5/6 nephrectomy kidney injury model had beneficial effects on renal function halting disease progression. These findings constitute the first definition of an intrinsic nephron precursor population, with major potential for cell-based therapeutic strategies and modelling of kidney disease.
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Affiliation(s)
- Orit Harari-Steinberg
- The Pediatric Stem Cell Research Institute, Edmond and Lily Safra Children's Hospital, Sheba Center for Regenerative Medicine, Sheba Medical CenterRamat-Gan, Israel
| | - Sally Metsuyanim
- The Pediatric Stem Cell Research Institute, Edmond and Lily Safra Children's Hospital, Sheba Center for Regenerative Medicine, Sheba Medical CenterRamat-Gan, Israel
- Mina and Everard Goodman Faculty of Life Sciences, Bar-IlanUniversityRamat-Gan, Israel
| | - Dorit Omer
- The Pediatric Stem Cell Research Institute, Edmond and Lily Safra Children's Hospital, Sheba Center for Regenerative Medicine, Sheba Medical CenterRamat-Gan, Israel
- Sackler School of Medicine, Tel Aviv UniversityTel Aviv, Israel
| | - Yehudit Gnatek
- The Pediatric Stem Cell Research Institute, Edmond and Lily Safra Children's Hospital, Sheba Center for Regenerative Medicine, Sheba Medical CenterRamat-Gan, Israel
| | - Rotem Gershon
- The Pediatric Stem Cell Research Institute, Edmond and Lily Safra Children's Hospital, Sheba Center for Regenerative Medicine, Sheba Medical CenterRamat-Gan, Israel
- Sackler School of Medicine, Tel Aviv UniversityTel Aviv, Israel
| | - Sara Pri-Chen
- The Pediatric Stem Cell Research Institute, Edmond and Lily Safra Children's Hospital, Sheba Center for Regenerative Medicine, Sheba Medical CenterRamat-Gan, Israel
| | - Derya D Ozdemir
- The Roslin Institute, University of Edinburgh, Easter Bush CampusMidlothian, UK
| | - Yaniv Lerenthal
- Cancer Research Center, Sheba Medical CenterRamat-Gan, Israel
| | - Tzahi Noiman
- Mina and Everard Goodman Faculty of Life Sciences, Bar-IlanUniversityRamat-Gan, Israel
| | - Herzel Ben-Hur
- L.E.M. Laboratory of Early DetectionNes Ziona, Israel
- Department of Obstet and Gynecology, Assaf HarofehTzrifin, Israel
| | - Zvi Vaknin
- Department of Obstet and Gynecology, Assaf HarofehTzrifin, Israel
| | | | - Bruce J Aronow
- Division of Molecular and Developmental Biology, Department of Pediatrics, University of Cincinnati, Childrens Hospital Medical CenterCincinnati, OH, USA
| | - Ronald S Goldstein
- Mina and Everard Goodman Faculty of Life Sciences, Bar-IlanUniversityRamat-Gan, Israel
| | - Peter Hohenstein
- The Roslin Institute, University of Edinburgh, Easter Bush CampusMidlothian, UK
| | - Benjamin Dekel
- The Pediatric Stem Cell Research Institute, Edmond and Lily Safra Children's Hospital, Sheba Center for Regenerative Medicine, Sheba Medical CenterRamat-Gan, Israel
- Sackler School of Medicine, Tel Aviv UniversityTel Aviv, Israel
- Division of Pediatric Nephrology, Edmond& Lily Safra Children's Hospital, Sheba Medical CenterRamat-Gan, Israel
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14
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Buzhor E, Omer D, Harari-Steinberg O, Dotan Z, Vax E, Pri-Chen S, Metsuyanim S, Pleniceanu O, Goldstein RS, Dekel B. Reactivation of NCAM1 defines a subpopulation of human adult kidney epithelial cells with clonogenic and stem/progenitor properties. THE AMERICAN JOURNAL OF PATHOLOGY 2013; 183:1621-1633. [PMID: 24055371 DOI: 10.1016/j.ajpath.2013.07.034] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2013] [Revised: 07/16/2013] [Accepted: 07/22/2013] [Indexed: 12/21/2022]
Abstract
The nephron is composed of a monolayer of epithelial cells that make up its various compartments. In development, these cells begin as mesenchyme. NCAM1, abundant in the mesenchyme and early nephron lineage, ceases to express in mature kidney epithelia. We show that, once placed in culture and released from quiescence, adult human kidney epithelial cells (hKEpCs), uniformly positive for CD24/CD133, re-express NCAM1 in a specific cell subset that attains a stem/progenitor state. Immunosorted NCAM1(+) cells overexpressed early nephron progenitor markers (PAX2, SALL1, SIX2, WT1) and acquired a mesenchymal fate, indicated by high vimentim and reduced E-cadherin levels. Gene expression and microarray analysis disclosed both a proximal tubular origin of these cells and molecules regulating epithelial-mesenchymal transition. NCAM1(+) cells generated clonal progeny when cultured in the presence of fetal kidney conditioned medium, differentiated along mesenchymal lineages but retained the unique propensity to generate epithelial kidney spheres and produce epithelial renal tissue on single-cell grafting in chick CAM and mouse. Depletion of NCAM1(+) cells from hKEpCs abrogated stemness traits in vitro. Eliminating these cells during the regenerative response that follows glycerol-induced acute tubular necrosis worsened peak renal injury in vivo. Thus, higher clone-forming and developmental capacities characterize a distinct subset of adult kidney-derived cells. The ability to influence an endogenous regenerative response via NCAM1 targeting may lead to novel therapeutics for renal diseases.
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Affiliation(s)
- Ella Buzhor
- Pediatric Stem Cell Research Institute, Safra Children's Hospital, Sheba Medical Center, Tel Hashomer, Sackler Faculty of Medicine, Tel Aviv University, Ramat-Gan, Israel; Sheba Center for Regenerative Medicine, Sheba Medical Center, Tel Hashomer, Sackler Faculty of Medicine, Tel Aviv University, Ramat-Gan, Israel
| | - Dorit Omer
- Pediatric Stem Cell Research Institute, Safra Children's Hospital, Sheba Medical Center, Tel Hashomer, Sackler Faculty of Medicine, Tel Aviv University, Ramat-Gan, Israel; Sheba Center for Regenerative Medicine, Sheba Medical Center, Tel Hashomer, Sackler Faculty of Medicine, Tel Aviv University, Ramat-Gan, Israel
| | - Orit Harari-Steinberg
- Pediatric Stem Cell Research Institute, Safra Children's Hospital, Sheba Medical Center, Tel Hashomer, Sackler Faculty of Medicine, Tel Aviv University, Ramat-Gan, Israel; Sheba Center for Regenerative Medicine, Sheba Medical Center, Tel Hashomer, Sackler Faculty of Medicine, Tel Aviv University, Ramat-Gan, Israel
| | - Zohar Dotan
- Department of Urology, Sheba Medical Center, Tel Hashomer, Sackler Faculty of Medicine, Tel Aviv University, Ramat-Gan, Israel
| | - Einav Vax
- Pediatric Stem Cell Research Institute, Safra Children's Hospital, Sheba Medical Center, Tel Hashomer, Sackler Faculty of Medicine, Tel Aviv University, Ramat-Gan, Israel; Sheba Center for Regenerative Medicine, Sheba Medical Center, Tel Hashomer, Sackler Faculty of Medicine, Tel Aviv University, Ramat-Gan, Israel
| | - Sara Pri-Chen
- Pediatric Stem Cell Research Institute, Safra Children's Hospital, Sheba Medical Center, Tel Hashomer, Sackler Faculty of Medicine, Tel Aviv University, Ramat-Gan, Israel; Maurice and Gabriela Goldschleger Eye Research Institute, Sheba Medical Center, Tel Hashomer, Sackler Faculty of Medicine, Tel Aviv University, Ramat-Gan, Israel
| | - Sally Metsuyanim
- Pediatric Stem Cell Research Institute, Safra Children's Hospital, Sheba Medical Center, Tel Hashomer, Sackler Faculty of Medicine, Tel Aviv University, Ramat-Gan, Israel; Mina and Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat-Gan, Israel
| | - Oren Pleniceanu
- Pediatric Stem Cell Research Institute, Safra Children's Hospital, Sheba Medical Center, Tel Hashomer, Sackler Faculty of Medicine, Tel Aviv University, Ramat-Gan, Israel; Sheba Center for Regenerative Medicine, Sheba Medical Center, Tel Hashomer, Sackler Faculty of Medicine, Tel Aviv University, Ramat-Gan, Israel
| | - Ronald S Goldstein
- Mina and Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat-Gan, Israel
| | - Benjamin Dekel
- Pediatric Stem Cell Research Institute, Safra Children's Hospital, Sheba Medical Center, Tel Hashomer, Sackler Faculty of Medicine, Tel Aviv University, Ramat-Gan, Israel; Sheba Center for Regenerative Medicine, Sheba Medical Center, Tel Hashomer, Sackler Faculty of Medicine, Tel Aviv University, Ramat-Gan, Israel; Division of Pediatric Nephrology, Safra Children's Hospital, Sheba Medical Center, Tel Hashomer, Sackler Faculty of Medicine, Tel Aviv University, Ramat-Gan, Israel.
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15
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Guthrie K, Bruce A, Sangha N, Rivera E, Basu J. Potency evaluation of tissue engineered and regenerative medicine products. Trends Biotechnol 2013; 31:505-14. [DOI: 10.1016/j.tibtech.2013.05.007] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2013] [Revised: 05/23/2013] [Accepted: 05/23/2013] [Indexed: 12/30/2022]
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16
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Gluz E, Grinberg I, Corem-Salkmon E, Mizrahi D, Margel S. Engineering of new crosslinked near-infrared fluorescent polyethylene glycol bisphosphonate nanoparticles for bone targeting. ACTA ACUST UNITED AC 2013. [DOI: 10.1002/pola.26858] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Eran Gluz
- Department of Chemistry; The Institute of Nanotechnology and Advanced Materials; Bar-Ilan University; Ramat-Gan 52900 Israel
| | - Igor Grinberg
- Department of Chemistry; The Institute of Nanotechnology and Advanced Materials; Bar-Ilan University; Ramat-Gan 52900 Israel
| | - Enav Corem-Salkmon
- Department of Chemistry; The Institute of Nanotechnology and Advanced Materials; Bar-Ilan University; Ramat-Gan 52900 Israel
| | - Dana Mizrahi
- Department of Chemistry; The Institute of Nanotechnology and Advanced Materials; Bar-Ilan University; Ramat-Gan 52900 Israel
| | - Shlomo Margel
- Department of Chemistry; The Institute of Nanotechnology and Advanced Materials; Bar-Ilan University; Ramat-Gan 52900 Israel
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17
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Omer D, Harari-Steinberg O, Buzhor E, Metsuyanim S, Pleniceanu O, Zundelevich A, Gal-Yam EN, Dekel B. Chromatin-modifying agents reactivate embryonic renal stem/progenitor genes in human adult kidney epithelial cells but abrogate dedifferentiation and stemness. Cell Reprogram 2013; 15:281-92. [PMID: 23841748 DOI: 10.1089/cell.2012.0087] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Recent studies have suggested that epigenetic modulation with chromatin-modifying agents can induce stemness and dedifferentiation and increase developmental plasticity. For instance, valproic acid (VPA), a histone deacetylase (HDAC) inhibitor, has been shown to promote self-renewal/expansion of hematopoietic stem cells and facilitate the generation of induced pluripotent stem cells (iPSCs). Previously, we observed that downregulation of embryonic renal stem/progenitor genes in the adult kidney was associated, at least in part, with epigenetic silencing. Therefore, we hypothesized that VPA may alter the expression of these genes and reprogram mature human adult kidney epithelial cells (hKEpCs) to a stem/progenitor-like state. Here, using quantitative RT-PCR and flow cytometry [fluorescence-activated cell sorting (FACS)] analysis, we show in VPA-treated primary cultures of human adult and fetal kidney significant reinduction of the renal stem/progenitor markers SIX2, OSR1, SALL1, NCAM, and PSA-NCAM. Robust SIX2 mRNA re-expression was confirmed at the protein level by western blot and was associated with epigenetic changes of the histones at multiple sites of the SIX2 promoter leading to gene activation, significantly increased acetylation of histones H4, and methylation of lysine 4 on H3. Furthermore, we could demonstrate synergistic effects of VPA and Wnt antagonists on SIX2 and also OSR1 reinduction. Nevertheless, VPA resulted in upregulation of E-CADHERIN and reduction in VIMENTIN, preventing the skewing of hKEpCs towards a more replicative mesenchymal state required for clonogenic expansion and acquisition of stem cell characters, altogether inducing cell senescence at early passages. These results demonstrating that chromatin-modifying agents prevent dedifferentiation of hKEpCs have important clinical implications as they may limit ex-vivo self-renewal/expansion and possibly the in vivo renal regenerative capacity initiated by dedifferentiation.
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Affiliation(s)
- Dorit Omer
- The Pediatric Stem Cell Research Institute, Edmond & Lily Safra Children's Hospital, Sheba Center for Regenerative Medicine, Sheba Medical Center, Tel Hashomer, Israel
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18
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Cohen S, Pellach M, Kam Y, Grinberg I, Corem-Salkmon E, Rubinstein A, Margel S. Synthesis and characterization of near IR fluorescent albumin nanoparticles for optical detection of colon cancer. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2012; 33:923-31. [PMID: 25427507 DOI: 10.1016/j.msec.2012.11.022] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2012] [Revised: 10/16/2012] [Accepted: 11/13/2012] [Indexed: 11/19/2022]
Abstract
Near IR (NIR) fluorescent human serum albumin (HSA) nanoparticles hold great promise as contrast agents for tumor diagnosis. HSA nanoparticles are considered to be biocompatible, non-toxic and non-immunogenic. In addition, NIR fluorescence properties of these nanoparticles are important for in vivo tumor diagnostics, with low autofluorescence and relatively deep penetration of NIR irradiation due to low absorption of biomatrices. The present study describes the synthesis of new NIR fluorescent HSA nanoparticles, by entrapment of a NIR fluorescent dye within the HSA nanoparticles, which also significantly increases the photostability of the dye. Tumor-targeting ligands such as peanut agglutinin (PNA) and anti-carcinoembryonic antigen antibodies (anti-CEA) were covalently conjugated to the NIR fluorescent albumin nanoparticles, increasing the potential fluorescent signal in tumors with upregulated corresponding receptors. Specific colon tumor detection by the NIR fluorescent HSA nanoparticles was demonstrated in a chicken embryo model and a rat model. In future work we also plan to encapsulate cancer drugs such as doxorubicin within the NIR fluorescent HSA nanoparticles for both colon cancer imaging and therapy.
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Affiliation(s)
- Sarit Cohen
- Department of Chemistry, Bar-Ilan Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat-Gan 52900, Israel
| | - Michal Pellach
- Department of Chemistry, Bar-Ilan Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat-Gan 52900, Israel
| | - Yossi Kam
- Institute for Drug Research, School of Pharmacy, Faculty of Medicine, The Hebrew University of Jerusalem, P.O. Box 12065, Jerusalem 91120, Israel
| | - Igor Grinberg
- Department of Chemistry, Bar-Ilan Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat-Gan 52900, Israel
| | - Enav Corem-Salkmon
- Department of Chemistry, Bar-Ilan Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat-Gan 52900, Israel
| | - Abraham Rubinstein
- Institute for Drug Research, School of Pharmacy, Faculty of Medicine, The Hebrew University of Jerusalem, P.O. Box 12065, Jerusalem 91120, Israel
| | - Shlomo Margel
- Department of Chemistry, Bar-Ilan Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat-Gan 52900, Israel.
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19
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Corem-Salkmon E, Perlstein B, Margel S. Design of near-infrared fluorescent bioactive conjugated functional iron oxide nanoparticles for optical detection of colon cancer. Int J Nanomedicine 2012; 7:5517-27. [PMID: 23112575 PMCID: PMC3480238 DOI: 10.2147/ijn.s33710] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Background Colon cancer is one of the major causes of death in the Western world. Early detection significantly improves long-term survival for patients with the disease. Near- infrared (NIR) fluorescent nanoparticles hold great promise as contrast agents for tumor detection. NIR offers several advantages for bioimaging compared with fluorescence in the visible spectrum, ie, lower autofluorescence of biological tissues, lower absorbance, and consequently deeper penetration into biomatrices. Methods and results NIR fluorescent iron oxide nanoparticles with a narrow size distribution were prepared by nucleation, followed by controlled growth of thin iron oxide films onto cyanine NIR dye conjugated gelatin-iron oxide nuclei. For functionalization, and in order to increase the NIR fluorescence intensity, the NIR fluorescent iron oxide nanoparticles obtained were coated with human serum albumin containing cyanine NIR dye. Leakage of the NIR dye from these nanoparticles into phosphate-buffered saline solution containing 4% albumin was not detected. The work presented here is a feasibility study to test the suitability of iron oxide-human serum albumin NIR fluorescent nanoparticles for optical detection of colon cancer. It demonstrates that encapsulation of NIR fluorescent dye within these nanoparticles significantly reduces photobleaching of the dye. Tumor-targeting ligands, peanut agglutinin and anticarcinoembryonic antigen antibodies (αCEA), were covalently conjugated with the NIR fluorescent iron oxide-human serum albumin nanoparticles via a poly(ethylene glycol) spacer. Specific colon tumor detection was demonstrated in chicken embryo and mouse models for both nonconjugated and the peanut agglutinin-conjugated or αCEA-conjugated NIR fluorescent iron oxide-human serum albumin nanoparticles. Conclusion Conjugation of peanut agglutinin or αCEA to the nanoparticles significantly increased the fluorescence intensity of the tagged colon tumor tissues relative to the nonconjugated nanoparticles.
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Affiliation(s)
- Enav Corem-Salkmon
- The Institute of Nanotechnology and Advanced Materials, Department of Chemistry, Bar-Ilan University, Ramat-Gan, Israel
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20
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Pellach M, Grinberg I, Margel S. Near IR fluorescent polystyrene/albumin core/shell nanoparticles for specific targeting of colonic neoplasms. Macromol Biosci 2012; 12:1472-9. [PMID: 22976925 DOI: 10.1002/mabi.201200142] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2012] [Revised: 07/10/2012] [Indexed: 11/09/2022]
Abstract
Previous studies have shown that albumin has a high affinity towards tumours, and, as a result, many drug/albumin conjugates, as well as albumin nanoparticles, have been studied as antineoplastic drug carriers. Numerous studies have also shown the high affinity of cyanine dyes for albumin. This work combines the former and the latter for the preparation of NIR fluorescent and photostable nanoparticles as diagnostic biomaterials. Tumour-specific labelling by NIR fluorescent polystyrene/albumin core/shell nanoparticles is demonstrated, without the presence of additional targeting moieties, and they possess great potential for clinical applications.
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Affiliation(s)
- Michal Pellach
- Department of Chemistry, Bar-Ilan Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat Gan, 52900, Israel
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