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Mammalian Genome: Official Journal of the International Mammalian Genome Society

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https://www.readbyqxmd.com/read/28634692/crispr-cas-orthologues-and-variants-optimizing-the-repertoire-specificity-and-delivery-of-genome-engineering-tools
#1
Alberto Cebrian-Serrano, Benjamin Davies
Robust and cost-effective genome editing in a diverse array of cells and model organisms is now possible thanks to the discovery of the RNA-guided endonucleases of the CRISPR-Cas system. The commonly used Cas9 of Streptococcus pyogenes shows high levels of activity but, depending on the application, has been associated with some shortcomings. Firstly, the enzyme has been shown to cause mutagenesis at genomic sequences resembling the target sequence. Secondly, the stringent requirement for a specific motif adjacent to the selected target site can limit the target range of this enzyme...
June 20, 2017: Mammalian Genome: Official Journal of the International Mammalian Genome Society
https://www.readbyqxmd.com/read/28612238/gene-editing-in-birds-takes-flight
#2
Mark E Woodcock, Alewo Idoko-Akoh, Michael J McGrew
The application of gene editing (GE) technology to create precise changes to the genome of bird species will provide new and exciting opportunities for the biomedical, agricultural and biotechnology industries, as well as providing new approaches for producing research models. Recent advances in modifying both the somatic and germ cell lineages in chicken indicate that this species, and conceivably soon other avian species, has joined a growing number of model organisms in the gene editing revolution.
June 13, 2017: Mammalian Genome: Official Journal of the International Mammalian Genome Society
https://www.readbyqxmd.com/read/28589393/a-history-of-genome-editing-in-mammals
#3
Almudena Fernández, Santiago Josa, Lluis Montoliu
Genome editing is now a routine procedure in many mammalian genetics laboratories. The ostensibly short but intense history of genome-editing approaches illustrates how a disruptive technology can universally colonize a field when this new methodology, conceived to alter mammalian genomes at specific locations, is found to efficiently and robustly deliver results. This review summarizes the early development of genome editing using nucleases, from the pioneering experiments using yeast meganucleases, to the latest prokaryotic nucleases used for precise genome manipulation...
June 6, 2017: Mammalian Genome: Official Journal of the International Mammalian Genome Society
https://www.readbyqxmd.com/read/28589392/naming-crispr-alleles-endonuclease-mediated-mutation-nomenclature-across-species
#4
Michelle N Knowlton, Cynthia L Smith
The widespread use of CRISPR/Cas and other targeted endonuclease technologies in many species has led to an explosion in the generation of new mutations and alleles. The ability to generate many different mutations from the same target sequence either by homology-directed repair with a donor sequence or non-homologous end joining-induced insertions and deletions necessitates a means for representing these mutations in literature and databases. Standardized nomenclature can be used to generate unambiguous, concise, and specific symbols to represent mutations and alleles...
June 6, 2017: Mammalian Genome: Official Journal of the International Mammalian Genome Society
https://www.readbyqxmd.com/read/28577119/gene-networks-for-total-number-born-in-pigs-across-divergent-environments
#5
Lucas L Verardo, Marcos S Lopes, Pramod Mathur, Ole Madsen, Fabyano F Silva, Martien A M Groenen, Egbert F Knol, Paulo S Lopes, Simone E F Guimarães
For reproductive traits such as total number born (TNB), variance due to different environments is highly relevant in animal breeding. In this study, we aimed to perform a gene-network analysis for TNB in pigs across different environments using genomic reaction norm models. Thus, based on relevant single-nucleotide polymorphisms and linkage disequilibrium blocks across environments obtained from GWAS, different sets of candidate genes having biological roles linked to TNB were identified. Network analysis across environment levels resulted in gene interactions consistent with known mammal's fertility biology, captured relevant transcription factors for TNB biology and pointing out different sets of candidate genes for TNB in different environments...
June 2, 2017: Mammalian Genome: Official Journal of the International Mammalian Genome Society
https://www.readbyqxmd.com/read/28547032/car8-dorsal-root-ganglion-expression-and-genetic-regulation-of-analgesic-responses-are-associated-with-a-cis-eqtl-in-mice
#6
Roy C Levitt, Gerald Y Zhuang, Yuan Kang, Diana M Erasso, Udita Upadhyay, Mehtap Ozdemir, Eugene S Fu, Konstantinos D Sarantopoulos, Shad B Smith, William Maixner, Luda Diatchenko, Eden R Martin, Tim Wiltshire
Carbonic anhydrase-8 (Car8 mouse gene symbol) is devoid of enzymatic activity, but instead functions as an allosteric inhibitor of inositol trisphosphate receptor-1 (ITPR1) to regulate this intracellular calcium release channel important in synaptic functions and neuronal excitability. Causative mutations in ITPR1 and carbonic anhydrase-8 in mice and humans are associated with certain subtypes of spinal cerebellar ataxia (SCA). SCA mice are genetically deficient in dorsal root ganglia (DRG) Car8 expression and display mechanical and thermal hypersensitivity and susceptibility to subacute and chronic inflammatory pain behaviors...
May 25, 2017: Mammalian Genome: Official Journal of the International Mammalian Genome Society
https://www.readbyqxmd.com/read/28516231/molecular-evolution-of-type-ii-mage-genes-from-ancestral-maged2-gene-and-their-phylogenetic-resolution-of-basal-mammalian-clades
#7
Marcos De Donato, Sunday O Peters, Tanveer Hussain, Hectorina Rodulfo, Bolaji N Thomas, Masroor E Babar, Ikhide G Imumorin
Type II melanoma-associated antigens (MAGE) are a subgroup of about a dozen proteins found in various locations in the genome and expressed in normal tissues, thus are not related to cancer as the type I MAGE genes. This gene family exists as a single copy in non-mammals and monotremata, but found as two copies in metatherians and occur as a diverse group in all eutherians. Our studies suggest MAGED2 as the ancestor of this subfamily and the most likely evolutionary history of eutherian type II MAGE genes is hereby proposed based on synteny conservation, phylogenetic relations, genome location, homology conservation, and the protein and gene structures...
May 17, 2017: Mammalian Genome: Official Journal of the International Mammalian Genome Society
https://www.readbyqxmd.com/read/28500484/association-of-folate-metabolism-gene-polymorphisms-and-haplotype-combination-with-pulmonary-embolism-risk-in-chinese-han-population
#8
Xin Li, Ling Weng, Baihe Han, Yingnan Dai, Li Cha, Shujun Yan, Enze Jin
In this study, we aimed to investigate the association of four single nucleotide polymorphisms (SNPs) (MTHFR 677 C > T, MTHFR 1298 A > C, MTR 2756 A > G and MTRR 66 A > G), gene-gene interaction and haplotype combination with pulmonary embolism (PE) risk based on Chinese Han population. Logistic regression was performed to investigate association between four SNPs within folate metabolism gene and PE risk, and GMDR model was used to investigate the additional gene-gene interactions among the four SNPs...
May 12, 2017: Mammalian Genome: Official Journal of the International Mammalian Genome Society
https://www.readbyqxmd.com/read/28497211/association-of-toll-like-receptor-gene-polymorphisms-and-its-interaction-with-hpv-infection-in-determining-the-susceptibility-of-cervical-cancer-in-chinese-han-population
#9
Ye Jin, Shuang Qiu, Na Shao, Jianhua Zheng
The aim of the study is to investigate the association of several single-nucleotide polymorphisms (SNPs) within Toll-like receptors (TLRs) gene and additional gene-gene and gene-human papillomavirus (HPV) infection interaction with cervical cancer risk. A total of 1262 participants are selected, including 420 cervical cancer patients and 842 control participants. Generalized multifactor dimensionality reduction (GMDR) was used to screen the best interaction combination among five SNPs within TLR gene and HPV infection...
May 11, 2017: Mammalian Genome: Official Journal of the International Mammalian Genome Society
https://www.readbyqxmd.com/read/28474168/haplotype-analysis-on-relationship-of-ercc2-and-ercc3-gene-polymorphisms-with-osteosarcoma-risk-in-chinese-young-population
#10
Qiang Xu, Zuofu Zhang, Weixue Sun, Baiqiang Hu
The purpose of the study was to investigate the association of single-nucleotide polymorphisms (SNPs) within excision repair cross-complementation (ERCC) gene polymorphisms, additional gene-gene interaction, and haplotype combination with osteosarcoma risk. Generalized multifactor dimensionality reduction (GMDR) was used to screen the best interaction combination among SNPs. Logistic regression was performed to investigate the association between six SNPs within ERCC gene, additional gene-gene interaction on osteosarcoma risk...
May 4, 2017: Mammalian Genome: Official Journal of the International Mammalian Genome Society
https://www.readbyqxmd.com/read/28405742/crispr-cas9-mediated-deletion-of-lncrna-gm26878-in-the-distant-foxf1-enhancer-region
#11
Przemyslaw Szafranski, Justyna A Karolak, Denise Lanza, Marzena Gajęcka, Jason Heaney, Paweł Stankiewicz
Recent genome editing techniques, including CRISPR mutagenesis screens, offer unparalleled opportunities to study the regulatory non-coding genomic regions, enhancers, promoters, and functional non-coding RNAs. Heterozygous point mutations in FOXF1 and genomic deletion copy-number variants at chromosomal region 16q24.1 involving FOXF1 or its regulatory region mapping ~300 kb upstream of FOXF1 and leaving it intact have been identified in the vast majority of patients with a lethal neonatal lung disease, alveolar capillary dysplasia with misalignment of pulmonary veins (ACDMPV)...
April 12, 2017: Mammalian Genome: Official Journal of the International Mammalian Genome Society
https://www.readbyqxmd.com/read/28401291/the-human-retinoblastoma-susceptibility-gene-rb1-an-evolutionary-story-in-primates
#12
Maria C Viana, William C Tavares, Ayslan C Brant, Mariana Boroni, Héctor N Seuánez
The tumor suppressor gene RB1 (Human Retinoblastoma Susceptibility Gene) plays a prominent role in normal development, gene transcription, DNA replication, repair, and mitosis. Its complete biallelic dysfunction in retinoblasts is the main cause of retinoblastoma in the human. Although this gene has been evolutionary conserved, comparisons between the reference and human RB1 coding region with its counterparts in 19 non-human primates showed 359 sites where nucleotide replacements took place during the radiation of these species...
April 11, 2017: Mammalian Genome: Official Journal of the International Mammalian Genome Society
https://www.readbyqxmd.com/read/28396939/fat-and-carbohydrate-content-in-the-diet-induces-drastic-changes-in-gene-expression-in-young-g%C3%A3-ttingen-minipigs
#13
Caroline M Junker Mentzel, Tainã Figueiredo Cardoso, Annika M J Lex, Dorte Bratbo Sørensen, Merete Fredholm, Susanna Cirera
In human health, there is interest in developing specific diets to reduce body weight. These studies are mainly focused on phenotypic changes induced in blood measurements, i.e., triglycerides, HDL, LDL, and insulin, and on physical changes, i.e., body weight and BMI. To evaluate the biological impact of diet interventions, it is very important to investigate the molecular mechanisms driving the diet-induced phenotypic changes in relevant tissues. However, studying these effects in humans is difficult due to ethical concerns in doing interventions and obtaining tissue samples and good animal models are therefore needed...
April 10, 2017: Mammalian Genome: Official Journal of the International Mammalian Genome Society
https://www.readbyqxmd.com/read/28378063/bridging-the-gap-large-animal-models-in-neurodegenerative-research
#14
REVIEW
S L Eaton, T M Wishart
The world health organisation has declared neurological disorders as one of the greatest public health risks in the world today. Yet, despite this growing concern, the mechanisms underpinning many of these conditions are still poorly understood. This may in part be due to the seemingly diverse nature of the initiating insults ranging from genetic (such as the Ataxia's and Lysosomal storage disorders) through to protein misfolding and aggregation (i.e. Prions), and those of a predominantly unknown aetiology (i...
April 4, 2017: Mammalian Genome: Official Journal of the International Mammalian Genome Society
https://www.readbyqxmd.com/read/28374058/control-of-gene-editing-by-manipulation-of-dna-repair-mechanisms
#15
Eric Danner, Sanum Bashir, Saniye Yumlu, Wolfgang Wurst, Benedikt Wefers, Ralf Kühn
DNA double-strand breaks (DSBs) are produced intentionally by RNA-guided nucleases to achieve genome editing through DSB repair. These breaks are repaired by one of two main repair pathways, classic non-homologous end joining (c-NHEJ) and homology-directed repair (HDR), the latter being restricted to the S/G2 phases of the cell cycle and notably less frequent. Precise genome editing applications rely on HDR, with the abundant c-NHEJ formed mutations presenting a barrier to achieving high rates of precise sequence modifications...
April 3, 2017: Mammalian Genome: Official Journal of the International Mammalian Genome Society
https://www.readbyqxmd.com/read/28283737/mild-reproductive-impact-of-a-y-chromosome-deletion-on-a-c57bl-6j-substrain
#16
Megan M MacBride, Adam Navis, Amar Dasari, Ana V Perez
A recently reported deletion of about 40 Mb in length between 6.12/6.57 and 46.73/47.31 Mb on the Y chromosome long arm of the C57BL/6JBomTac inbred strain made us closely examine the strain's breeding history and reproductive characteristics. We verified that the two copies of Rbm31y that are present inside the putative deletion were indeed deleted. This inbred strain presents an expected litter size for a C57BL/6 substrain. In vitro fertilization (IVF) efficiency and breeding efficiencies are comparable to those of the C57BL/6NTac substrain; however, the male/female sex ratio in the C57BL/6JBomTac is mildly skewed towards females...
June 2017: Mammalian Genome: Official Journal of the International Mammalian Genome Society
https://www.readbyqxmd.com/read/28116503/genetic-analysis-of-a-mouse-cross-implicates-an-anti-inflammatory-gene-in-control-of-atherosclerosis-susceptibility
#17
Norman E Garrett, Andrew T Grainger, Jing Li, Mei-Hua Chen, Weibin Shi
Nearly all genetic crosses generated from Apoe(-/-) or Lldlr(-/-) mice for genetic analysis of atherosclerosis have used C57BL/6 J (B6) mice as one parental strain, thus limiting their mapping power and coverage of allelic diversity. SM/J-Apoe (-/-) and BALB/cJ-Apoe (-/-) mice differ significantly in atherosclerosis susceptibility. 224 male F2 mice were generated from the two Apoe (-/-) strains to perform quantitative trait locus (QTL) analysis of atherosclerosis. F2 mice were fed 5 weeks of Western diet and analyzed for atherosclerotic lesions in the aortic root...
April 2017: Mammalian Genome: Official Journal of the International Mammalian Genome Society
https://www.readbyqxmd.com/read/28028563/whole-genome-sequencing-reveals-a-7-base-pair-deletion-in-dmd-exon-42-in-a-dog-with-muscular-dystrophy
#18
Peter P Nghiem, Luca Bello, Cindy Balog-Alvarez, Sara Mata López, Amanda Bettis, Heather Barnett, Briana Hernandez, Scott J Schatzberg, Richard J Piercy, Joe N Kornegay
Dystrophin is a key cytoskeletal protein coded by the Duchenne muscular dystrophy (DMD) gene located on the X-chromosome. Truncating mutations in the DMD gene cause loss of dystrophin and the classical DMD clinical syndrome. Spontaneous DMD gene mutations and associated phenotypes occur in several other species. The mdx mouse model and the golden retriever muscular dystrophy (GRMD) canine model have been used extensively to study DMD disease pathogenesis and show efficacy and side effects of putative treatments...
April 2017: Mammalian Genome: Official Journal of the International Mammalian Genome Society
https://www.readbyqxmd.com/read/28303292/editing-the-genome-of-hipsc-with-crispr-cas9-disease-models
#19
REVIEW
Andrew R Bassett
The advent of human-induced pluripotent stem cell (hiPSC) technology has provided a unique opportunity to establish cellular models of disease from individual patients, and to study the effects of the underlying genetic aberrations upon multiple different cell types, many of which would not normally be accessible. Combining this with recent advances in genome editing techniques such as the clustered regularly interspaced short palindromic repeat (CRISPR) system has provided an ability to repair putative causative alleles in patient lines, or introduce disease alleles into a healthy "WT" cell line...
March 16, 2017: Mammalian Genome: Official Journal of the International Mammalian Genome Society
https://www.readbyqxmd.com/read/28303291/erratum-to-the-valdostana-goat-a-genome-wide-investigation-of-the-distinctiveness-of-its-selective-sweep-regions
#20
Andrea Talenti, Francesca Bertolini, Giulio Pagnacco, Fabio Pilla, Paolo Ajmone-Marsan, Max F Rothschild, Paola Crepaldi
No abstract text is available yet for this article.
March 16, 2017: Mammalian Genome: Official Journal of the International Mammalian Genome Society
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