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      The CRISPR/Cas9 system sheds new lights on the biology of protozoan parasites

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          Abstract

          The CRISPR/Cas9 system, a natural defence system of bacterial organisms, has recently been used to modify genomes of the most important protozoa parasites. Successful genome manipulations with the CRISPR/Cas9 system are changing the present view of genetics in parasitology. The application of this system offers a major chance to overcome the current restriction in culturing, maintaining and analysing protozoan parasites, and allows dynamic analysis of parasite genes functions, leading to a better understanding of pathogenesis. CRISPR/Cas9 system will have a significant influence on the process of developing novel drugs and treatment strategies against protozoa parasites.

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          Most cited references49

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          Functional repair of CFTR by CRISPR/Cas9 in intestinal stem cell organoids of cystic fibrosis patients.

          Single murine and human intestinal stem cells can be expanded in culture over long time periods as genetically and phenotypically stable epithelial organoids. Increased cAMP levels induce rapid swelling of such organoids by opening the cystic fibrosis transmembrane conductor receptor (CFTR). This response is lost in organoids derived from cystic fibrosis (CF) patients. Here we use the CRISPR/Cas9 genome editing system to correct the CFTR locus by homologous recombination in cultured intestinal stem cells of CF patients. The corrected allele is expressed and fully functional as measured in clonally expanded organoids. This study provides proof of concept for gene correction by homologous recombination in primary adult stem cells derived from patients with a single-gene hereditary defect. Copyright © 2013 Elsevier Inc. All rights reserved.
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            Genome Engineering of Drosophila with the CRISPR RNA-Guided Cas9 Nuclease

            We have adapted a bacterial CRISPR RNA/Cas9 system to precisely engineer the Drosophila genome and report that Cas9-mediated genomic modifications are efficiently transmitted through the germline. This RNA-guided Cas9 system can be rapidly programmed to generate targeted alleles for probing gene function in Drosophila.
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              CRISPR/Cas9 in Genome Editing and Beyond

              The Cas9 protein (CRISPR-associated protein 9), derived from type II CRISPR (clustered regularly interspaced short palindromic repeats) bacterial immune systems, is emerging as a powerful tool for engineering the genome in diverse organisms. As an RNA-guided DNA endonuclease, Cas9 can be easily programmed to target new sites by altering its guide RNA sequence, and its development as a tool has made sequence-specific gene editing several magnitudes easier. The nuclease-deactivated form of Cas9 further provides a versatile RNA-guided DNA-targeting platform for regulating and imaging the genome, as well as for rewriting the epigenetic status, all in a sequence-specific manner. With all of these advances, we have just begun to explore the possible applications of Cas9 in biomedical research and therapeutics. In this review, we describe the current models of Cas9 function and the structural and biochemical studies that support it. We focus on the applications of Cas9 for genome editing, regulation, and imaging, discuss other possible applications and some technical considerations, and highlight the many advantages that CRISPR/Cas9 technology offers.
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                Author and article information

                Contributors
                + 4858 3491941 , grzybek.genetics@gmail.com
                olau.95@gmail.com
                aleksandra.olejarska@up.lublin.pl
                k.o.szczepaniak@gmail.com
                aneta.strachecka@up.lublin.pl
                anna.ls1@gumed.edu.pl
                pawel.lisowski@mdc-berlin.de
                Journal
                Appl Microbiol Biotechnol
                Appl. Microbiol. Biotechnol
                Applied Microbiology and Biotechnology
                Springer Berlin Heidelberg (Berlin/Heidelberg )
                0175-7598
                1432-0614
                6 April 2018
                6 April 2018
                2018
                : 102
                : 11
                : 4629-4640
                Affiliations
                [1 ]ISNI 0000 0001 0531 3426, GRID grid.11451.30, Department of Tropical Parasitology, , Medical University of Gdansk, ; Powstania Styczniowego 9b, 81-519 Gdynia, Poland
                [2 ]ISNI 0000 0000 9787 2307, GRID grid.446127.2, Department of Biotechnology, , Bialystok University of Technology, ; Wiejska 45E, 15-351, Bialystok, Poland
                [3 ]ISNI 0000 0000 8816 7059, GRID grid.411201.7, Faculty of Veterinary Medicine, , University of Life Sciences in Lublin, ; Akademicka 13, 20-950 Lublin, Poland
                [4 ]ISNI 0000 0000 8816 7059, GRID grid.411201.7, Faculty of Biology, Animal Sciences and Bioeconomy, , University of Life Sciences in Lublin, ; Akademicka 13, 20-950 Lublin, Poland
                [5 ]ISNI 0000 0001 1210 151X, GRID grid.460378.e, Department of Molecular Biology, , Institute of Genetics and Animal Breeding PAS, ; Postepu 36A, 05-552 Jastrzebiec, Poland
                [6 ]ISNI 0000 0001 1942 5154, GRID grid.211011.2, iPS Cell-Based Disease Modeling Group, Max-Delbrück-Center for Molecular Medicine (MDC) in the Helmholtz Association, ; Robert-Rössle-Str. 10, 13092 Berlin, Germany
                Author information
                http://orcid.org/0000-0002-8780-0304
                Article
                8927
                10.1007/s00253-018-8927-3
                5954013
                29626235
                79bb2f8d-52de-4722-ab9f-dfe40bfe4bd7
                © The Author(s) 2018

                Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

                History
                : 2 March 2018
                : 6 March 2018
                Funding
                Funded by: FundRef http://dx.doi.org/10.13039/501100004281, Narodowe Centrum Nauki;
                Award ID: 2012/07/N/NZ9/02060
                Award ID: 2016/22/M/NZ2/00548
                Award Recipient :
                Funded by: FundRef http://dx.doi.org/10.13039/501100004569, Ministerstwo Nauki i Szkolnictwa Wyższego;
                Award ID: 428/STYP/11/2016
                Award Recipient :
                Categories
                Mini-Review
                Custom metadata
                © Springer-Verlag GmbH Germany, part of Springer Nature 2018

                Biotechnology
                crispr,cas9,genetic modification,protozoa,apicomplexa,genome editing
                Biotechnology
                crispr, cas9, genetic modification, protozoa, apicomplexa, genome editing

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