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https://www.readbyqxmd.com/read/29351004/duchenne-muscular-dystrophy-dmd-an-updated-review-of-common-available-therapies
#1
Arash Salmaninejad, Saeed Farajzadeh Valilou, Hadi Bayat, Nader Ebadi, Abdolreza Daraei, Meysam Yousefi, Abolfazl Nesaei, Majid Mojarrad
Duchenne muscular dystrophy (DMD) is a lethal progressive pediatric muscle disorder and genetically inherited as an X-linked disease that caused by mutations in the dystrophin gene. DMD leads to progressive muscle weakness, degeneration, and wasting; finally, follows with the premature demise in affected individual's due to respiratory and/or cardiac failure typically by age of 30. For decades, scientists tried massively to find an effective therapy method, but there is no absolute cure currently for patients with DMD, nevertheless, recent advanced progressions on the treatment of DMD will be hopeful in the future...
January 19, 2018: International Journal of Neuroscience
https://www.readbyqxmd.com/read/29348295/tuning%C3%A2-crispr-cas9-gene-drives-in-saccharomyces-cerevisiae
#2
Emily Roggenkamp, Rachael M Giersch, Madison N Schrock, Emily Turnquist, Megan Halloran, Gregory C Finnigan
Control of biological populations is an ongoing challenge in many fields including agriculture, biodiversity, ecological preservation, pest control, and the spread of disease. In some cases, such as insects that harbor human pathogens (e.g. malaria), elimination or reduction of a small number of species would have a dramatic impact across the globe. Given the recent discovery and development of the CRISPR/Cas9 gene editing technology, a unique arrangement of this system-a nuclease based "gene drive"-allows for the Super-Mendelian spread and forced propagation of a genetic element through a population...
January 18, 2018: G3: Genes—Genomes—Genetics
https://www.readbyqxmd.com/read/29343412/implementing-genome-driven-personalized-cardiology-in-clinical-practice
#3
REVIEW
Ares Pasipoularides
Genomics designates the coordinated investigation of a large number of genes in the context of a biological process or disease. It may be long before we attain comprehensive understanding of the genomics of common complex cardiovascular diseases (CVDs) such as inherited cardiomyopathies, valvular diseases, primary arrhythmogenic conditions, congenital heart syndromes, hypercholesterolemia and atherosclerotic heart disease, hypertensive syndromes, and heart failure with preserved/reduced ejection fraction. Nonetheless, as genomics is evolving rapidly, it is constructive to survey now pertinent concepts and breakthroughs...
January 14, 2018: Journal of Molecular and Cellular Cardiology
https://www.readbyqxmd.com/read/29340084/crispr-cas9-hdr-system-enhances-aqp1-gene-expression
#4
Zhimin Wang, Yaohe Wang, Songling Wang, Li-Rong Zhang, Na Zhang, Zhenguo Cheng, Qingshi Liu, Kelly J Shields, Baoli Hu, Michael J Passineau
Ionizing radiation (IR) isthe primarytherapeutic tool to treat patients with cancerous lesions located in the head and neck. In many patients, IR results in irreversible and severe salivary gland dysfunction or xerostomia. Currently there are no effective treatment options to reduce the effects of xerostomia. More recently, salivary gland gene therapy utilizing the water-specific protein aquaporin 1 (AQP1) has been of great interest to potentially correct salivary dysfunction. In this study, we used CRISPR-Cas9 gene editing along with the endogenous promoter of AQP1 within theHEK293 and MDCK cell lines...
December 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29339778/a-novel-human-muscle-cell-model-of-duchenne-muscular-dystrophy-created-by-crispr-cas9-and-evaluation-of-antisense-mediated-exon-skipping
#5
Takenori Shimo, Kana Hosoki, Yusuke Nakatsuji, Toshifumi Yokota, Satoshi Obika
Oligonucleotide-mediated splicing modulation is a promising therapeutic approach for Duchenne muscular dystrophy (DMD). Recently, eteplirsen, a phosphorodiamidate morpholino oligomer-based splice-switching oligonucleotide (SSO) targeting DMD exon 51, was approved by the U.S. Food and Drug Administration as the first antisense-based drug for DMD patients. For further exploring SSOs targeting other exons in the DMD gene, the efficacy of exon skipping and protein rescue with each SSO sequence needs evaluations in vitro...
January 16, 2018: Journal of Human Genetics
https://www.readbyqxmd.com/read/29337866/crispr-cas-targeting-of-host-genes-as-an-antiviral-strategy
#6
REVIEW
Shuliang Chen, Xiao Yu, Deyin Guo
Currently, a new gene editing tool-the Clustered Regularly Interspaced Short Palindromic Repeats (CRISPR) associated (Cas) system-is becoming a promising approach for genetic manipulation at the genomic level. This simple method, originating from the adaptive immune defense system in prokaryotes, has been developed and applied to antiviral research in humans. Based on the characteristics of virus-host interactions and the basic rules of nucleic acid cleavage or gene activation of the CRISPR-Cas system, it can be used to target both the virus genome and host factors to clear viral reservoirs and prohibit virus infection or replication...
January 16, 2018: Viruses
https://www.readbyqxmd.com/read/29337372/crispr-cas9-edited-site-sequencing-cres-seq-an-efficient-and-high-throughput-method-for-the-selection-of-crispr-cas9-edited-clones
#7
Yaligara Veeranagouda, Delphine Debono-Lagneaux, Hamida Fournet, Gilbert Thill, Michel Didier
The emergence of clustered regularly interspaced short palindromic repeats-Cas9 (CRISPR-Cas9) gene editing systems has enabled the creation of specific mutants at low cost, in a short time and with high efficiency, in eukaryotic cells. Since a CRISPR-Cas9 system typically creates an array of mutations in targeted sites, a successful gene editing project requires careful selection of edited clones. This process can be very challenging, especially when working with multiallelic genes and/or polyploid cells (such as cancer and plants cells)...
January 16, 2018: Current Protocols in Molecular Biology
https://www.readbyqxmd.com/read/29336892/gene-therapy-and-gene-editing-strategies-for-hemoglobinopathies
#8
REVIEW
Maria Rosa Lidonnici, Giuliana Ferrari
Gene therapy for hemoglobinopathies is currently based on transplantation of autologous hematopoietic stem cells genetically modified with an integrating lentiviral vector expressing a globin gene under the control of globin transcriptional regulatory elements. Studies and safety works demonstrated the potential therapeutic efficacy and safety of this approach, providing the rationale for clinical translation. The outcomes of early clinical trials, although showing promising results, have highlighted the current limitations to a more general application...
January 3, 2018: Blood Cells, Molecules & Diseases
https://www.readbyqxmd.com/read/29328557/clipping-cancer-with-crispr-the-precise-gene-editing-tool-is-showing-promise-in-early-cancer-studies-although-obstacles-remain
#9
https://www.readbyqxmd.com/read/29326429/responsible-innovation-in-human-germline-gene-editing-background-document-to-the-recommendations-of-eshg-and-eshre
#10
Guido De Wert, Björn Heindryckx, Guido Pennings, Angus Clarke, Ursula Eichenlaub-Ritter, Carla G van El, Francesca Forzano, Mariëtte Goddijn, Heidi C Howard, Dragica Radojkovic, Emmanuelle Rial-Sebbag, Wybo Dondorp, Basil C Tarlatzis, Martina C Cornel
Technological developments in gene editing raise high expectations for clinical applications, including editing of the germline. The European Society of Human Reproduction and Embryology (ESHRE) and the European Society of Human Genetics (ESHG) together developed a Background document and Recommendations to inform and stimulate ongoing societal debates. This document provides the background to the Recommendations. Germline gene editing is currently not allowed in many countries. This makes clinical applications in these countries impossible now, even if germline gene editing would become safe and effective...
January 12, 2018: European Journal of Human Genetics: EJHG
https://www.readbyqxmd.com/read/29326428/human-germline-gene-editing-recommendations-of-eshg-and-eshre
#11
Guido de Wert, Guido Pennings, Angus Clarke, Ursula Eichenlaub-Ritter, Carla G van El, Francesca Forzano, Mariëtte Goddijn, Björn Heindryckx, Heidi C Howard, Dragica Radojkovic, Emmanuelle Rial-Sebbag, Basil C Tarlatzis, Martina C Cornel
Technological developments in gene editing raise high expectations for clinical applications, first of all for somatic gene editing but in theory also for germline gene editing (GLGE). GLGE is currently not allowed in many countries. This makes clinical applications in these countries impossible now, even if GLGE would become safe and effective. What were the arguments behind this legislation, and are they still convincing? If a technique can help to avoid serious genetic disorders, in a safe and effective way, would this be a reason to reconsider earlier standpoints? The European Society of Human Reproduction and Embryology (ESHRE) and the European Society of Human Genetics (ESHG) together developed a Background document and Recommendations to inform and stimulate ongoing societal debates...
January 12, 2018: European Journal of Human Genetics: EJHG
https://www.readbyqxmd.com/read/29326075/use-of-crispr-cas9-gene-editing-tools-for-developing-models-in-drug-discovery
#12
REVIEW
Gulzar Ahmad, Mansoor Amiji
Clustered regularly interspaced short palindromic repeat/CRISPR-associated 9 (CRISPR/Cas9) enables targeted genome engineering. The simplicity of this system, its facile engineering, and amenability to multiplex genes make it the system of choice for many applications. This system has revolutionized our ability to carry out gene editing, transcription regulation, genome imaging, and epigenetic modification. In this review, we discuss the discovery of CRISPR/Cas9, its mechanism of action, its application in medicine and animal model development, and its delivery...
January 8, 2018: Drug Discovery Today
https://www.readbyqxmd.com/read/29325827/efficient-oligo-nucleotide-mediated-crispr-cas9-gene-editing-in-aspergilli
#13
Christina S Nødvig, Jakob B Hoof, Martin E Kogle, Zofia D Jarczynska, Jan Lehmbeck, Dorte K Klitgaard, Uffe H Mortensen
CRISPR-Cas9 technologies are revolutionizing fungal gene editing. Here we show that survival of specific Cas9/sgRNA mediated DNA double strand breaks (DSBs) depends on the non-homologous end-joining, NHEJ, DNA repair pathway and we use this observation to develop a tool to assess protospacer efficiency in Aspergillus nidulans. Moreover, we show that in NHEJ deficient strains, highly efficient marker-free gene targeting can be performed. Indeed, we show that even single-stranded oligo nucleotides efficiently works as repair templates of specific Cas9/sgRNA induced DNA DSBs in A...
January 8, 2018: Fungal Genetics and Biology: FG & B
https://www.readbyqxmd.com/read/29324392/abnormal-rna-splicing-and-genomic-instability-after-induction-of-dnmt3a-mutations-by-crispr-cas9-gene-editing
#14
Lauren G Banaszak, Valentina Giudice, Xin Zhao, Zhijie Wu, Shouguo Gao, Kohei Hosokawa, Keyvan Keyvanfar, Danielle M Townsley, Fernanda Gutierrez-Rodrigues, Maria Del Pilar Fernandez Ibanez, Sachiko Kajigaya, Neal S Young
DNA methyltransferase 3A (DNMT3A) mediates de novo DNA methylation. Mutations in DNMT3A are associated with hematological malignancies, most frequently acute myeloid leukemia. DNMT3A mutations are hypothesized to establish a pre-leukemic state, rendering cells vulnerable to secondary oncogenic mutations and malignant transformation. However, the mechanisms by which DNMT3A mutations contribute to leukemogenesis are not well-defined. Here, we successfully created four DNMT3A-mutated K562 cell lines with frameshift mutations resulting in truncated DNMT3A proteins...
January 4, 2018: Blood Cells, Molecules & Diseases
https://www.readbyqxmd.com/read/29323325/an-ode-to-gene-edits-that-prevent-deafness
#15
Fyodor Urnov
No abstract text is available yet for this article.
January 11, 2018: Nature
https://www.readbyqxmd.com/read/29320887/transducing-airway-basal-cells-with-a-helper-dependent-adenoviral-vector-for-lung-gene-therapy
#16
Huibi Cao, Hong Ouyang, Hartmut Grasemann, Claire Bartlett, Kai Du, Rongqi Duan, Fushan Shi, Marvin Estrada, Kyle Seigel, Allan Coates, Herman Yeger, Christine Bear, Tanja Gonska, Theo Moraes, Jim Hu
A major challenge in developing gene-based therapies for airway diseases such as cystic fibrosis (CF) is sustaining therapeutic levels of transgene expression over time. This is largely due to airway epithelial cell turnover and the host immunogenicity to gene delivery vectors. Modern gene editing tools and delivery vehicles hold great potential for overcoming the challenge. There is currently not much known about how to deliver genes into airway stem cells, of which basal cells are the major type in human airways...
January 10, 2018: Human Gene Therapy
https://www.readbyqxmd.com/read/29317080/effective-regeneration-of-dystrophic-muscle-using-autologous-ipsc-derived-progenitors-with-crispr-cas9-mediated-precise-correction
#17
Mackenzie Hagan, Muhammad Ashraf, Il-Man Kim, Neal L Weintraub, Yaoliang Tang
Duchenne muscular dystrophy (DMD) is a lethal muscle wasting disease caused by a lack of dystrophin, which eventually leads to apoptosis of muscle cells and impaired muscle contractility. Clustered Regularly Interspaced Short Palindromic Repeats/CRISPR associated protein 9 (CRISPR/Cas9) gene editing of induced pluripotent stem cells (IPSC) offers the potential to correct the DMD gene defect and create healthy IPSC for autologous cell transplantation without causing immune activation. However, IPSC carry a risk of tumor formation, which can potentially be mitigated by differentiation of IPSC into myogenic progenitor cells (MPC)...
January 2018: Medical Hypotheses
https://www.readbyqxmd.com/read/29315387/a-validated-grna-library-for-crispr-cas9-targeting-of-the-human-glycosyltransferase-genome
#18
Yoshiki Narimatsu, Hiren J Joshi, Yang Zhang, Catarina Gomes, Yen-Hsi Chen, Flaminia Lorenzetti, Sanae Furukawa, Katrine Schjoldager, Lars Hansen, Henrik Clausen, Eric P Bennett, Hans H Wandall
Over 200 glycosyltransferases are involved in the orchestration of the biosynthesis of the human glycome , which is comprised of all glycan structures found on different glycoconjugates in cells. The glycome is vast, and despite advancements in analytic strategies it continues to be difficult to decipher biological roles of glycans with respect to specific glycan structures, type of glycoconjugate, particular glycoproteins, and distinct glycosites on proteins. In contrast to this, the number of glycosyltransferase genes involved in the biosynthesis of the human glycome is manageable, and the biosynthetic roles of most of these enzymes are defined or can be predicted with reasonable confidence...
January 5, 2018: Glycobiology
https://www.readbyqxmd.com/read/29314827/macrophage-specific-in-vivo-gene-editing-using-cationic-lipid-assisted-polymeric-nanoparticles
#19
Ying-Li Luo, Cong-Fei Xu, Hong-Jun Li, Zhi-Ting Cao, Jing Liu, Ji-Long Wang, Xiao-Jiao Du, Xian-Zhu Yang, Zhen Gu, Jun Wang
The CRISPR/Cas9 gene editing technology holds promise for the treatment of multiple diseases. However, the inability to perform specific gene editing in targeted tissues and cells, which may cause off-target effects, is one of the critical bottlenecks for therapeutic application of CRISPR/Cas9. Herein, macrophage-specific promoter-driven Cas9 expression plasmids (pM458 and pM330) were constructed and encapsulated in cationic lipid-assisted PEG-b-PLGA nanoparticles (CLAN). The obtained nanoparticles encapsulating the CRISPR/Cas9 plasmids were able to specifically express Cas9 in macrophages as well as their precursor monocytes both in vitro and in vivo...
January 9, 2018: ACS Nano
https://www.readbyqxmd.com/read/29305085/engineering-the-delivery-system-for-crispr-based-genome-editing
#20
REVIEW
Zachary Glass, Matthew Lee, Yamin Li, Qiaobing Xu
Clustered regularly interspaced short palindromic repeat-CRISPR-associated protein (CRISPR-Cas) systems, found in nature as microbial adaptive immune systems, have been repurposed into an important tool in biological engineering and genome editing, providing a programmable platform for precision gene targeting. These tools have immense promise as therapeutics that could potentially correct disease-causing mutations. However, CRISPR-Cas gene editing components must be transported directly to the nucleus of targeted cells to exert a therapeutic effect...
January 2, 2018: Trends in Biotechnology
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