keyword
MENU ▼
Read by QxMD icon Read
search

CRISPR AND Zebrafish

keyword
https://www.readbyqxmd.com/read/28718799/zebrafish-as-a-model-organism-for-the-development-of-drugs-for-skin-cancer
#1
REVIEW
Fatemeh Bootorabi, Hamed Manouchehri, Reza Changizi, Harlan Barker, Elisabetta Palazzo, Annalisa Saltari, Mataleena Parikka, Carlo Pincelli, Ashok Aspatwar
Skin cancer, which includes melanoma and squamous cell carcinoma, represents the most common type of cutaneous malignancy worldwide, and its incidence is expected to rise in the near future. This condition derives from acquired genetic dysregulation of signaling pathways involved in the proliferation and apoptosis of skin cells. The development of animal models has allowed a better understanding of these pathomechanisms, with the possibility of carrying out toxicological screening and drug development. In particular, the zebrafish (Danio rerio) has been established as one of the most important model organisms for cancer research...
July 18, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28716076/klf8-regulates-left-right-asymmetric-patterning-through-modulation-of-kupffer-s-vesicle-morphogenesis-and-spaw-expression
#2
Che-Yi Lin, Ming-Yuan Tsai, Yu-Hsiu Liu, Yu-Fen Lu, Yi-Chung Chen, Yun-Ren Lai, Hsin-Chi Liao, Huang-Wei Lien, Chung-Hsiang Yang, Chang-Jen Huang, Sheng-Ping L Hwang
BACKGROUND: Although vertebrates are bilaterally symmetric organisms, their internal organs are distributed asymmetrically along a left-right axis. Disruption of left-right axis asymmetric patterning often occurs in human genetic disorders. In zebrafish embryos, Kupffer's vesicle, like the mouse node, breaks symmetry by inducing asymmetric expression of the Nodal-related gene, spaw, in the left lateral plate mesoderm (LPM). Spaw then stimulates transcription of itself and downstream genes, including lft1, lft2, and pitx2, specifically in the left side of the diencephalon, heart and LPM...
July 17, 2017: Journal of Biomedical Science
https://www.readbyqxmd.com/read/28715414/kinesin-1-promotes-chondrocyte-maintenance-during-skeletal-morphogenesis
#3
Adrian Santos-Ledo, Marina Garcia-Macia, Philip D Campbell, Marta Gronska, Florence L Marlow
During skeletal morphogenesis diverse mechanisms are used to support bone formation. This can be seen in the bones that require a cartilage template for their development. In mammals the cartilage template is removed, but in zebrafish the cartilage template persists and the bone mineralizes around the cartilage scaffold. Remodeling of unmineralized cartilage occurs via planar cell polarity (PCP) mediated cell rearrangements that contribute to lengthening of elements; however, the mechanisms that maintain the chondrocyte template that supports perichondral ossification remain unclear...
July 17, 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28714182/rare-coding-variants-in-mapk7-predispose-to-adolescent-idiopathic-scoliosis
#4
Wenjie Gao, Chong Chen, Taifeng Zhou, Shulan Yang, Bo Gao, Hang Zhou, Chengjie Lian, Zizhao Wu, Xianjian Qiu, Xiaoming Yang, Esam Alattar, Wentao Liu, Deying Su, Silong Sun, Yulan Chen, Kenneth M C Cheung, Youqiang Song, Keith K D Luk, Danny Chan, Pak Chung Sham, Chao Xing, Chiea Chuen Khor, Gabriel Liu, Junlin Yang, Yubin Deng, Dingjun Hao, Dongsheng Huang, Quan-Zhen Li, Caixia Xu, Peiqiang Su
Adolescent idiopathic scoliosis (AIS) is a complex genetic disorder characterized by three-dimensional spinal curvatures, affecting 2-3% of school age children, yet the causes underlying AIS are not well understood. Here, we firstly conducted a whole-exome sequencing and linkage analysis on a three-generation Chinese family with autosomal dominant (AD) AIS, then performed targeted sequencing in a discovery cohort comprising 20 AD-AIS families and 86 simplex patients, and finally identified three disease-associated missense variants (c...
July 17, 2017: Human Mutation
https://www.readbyqxmd.com/read/28713249/crispr-cas9-mediated-zebrafish-knock-in-as-a-novel-strategy-to-study-midbrain-hindbrain-boundary-development
#5
Gokul Kesavan, Avinash Chekuru, Anja Machate, Michael Brand
The midbrain-hindbrain boundary (MHB) acts as an organizer and controls the fate of neighboring cells to develop into either mesencephalic (midbrain) or metencephalic (hindbrain) cells by secreting signaling molecules like Wnt1 and Fgf8. The zebrafish is an excellent vertebrate model for studying MHB development due to the ease of gene manipulation and the possibility of following cellular dynamics and morphogenetic processes using live imaging. Currently, only very few reporter and/or Cre-driver lines are available to study gene expression at the MHB, hampering the understanding of MHB development, and traditional transgenic technologies using promoter/enhancer fragments or bacterial artificial chromosome (BAC)-mediated transgenesis often do not faithfully recapitulate endogenous expression patterns...
2017: Frontiers in Neuroanatomy
https://www.readbyqxmd.com/read/28701426/dynamics-of-in-vivo-asc-speck-formation
#6
Paola Kuri, Nicole L Schieber, Thomas Thumberger, Joachim Wittbrodt, Yannick Schwab, Maria Leptin
Activated danger or pathogen sensors trigger assembly of the inflammasome adaptor ASC into specks, large signaling platforms considered hallmarks of inflammasome activation. Because a lack of in vivo tools has prevented the study of endogenous ASC dynamics, we generated a live ASC reporter through CRISPR/Cas9 tagging of the endogenous gene in zebrafish. We see strong ASC expression in the skin and other epithelia that act as barriers to insult. A toxic stimulus triggered speck formation and rapid pyroptosis in keratinocytes in vivo...
July 12, 2017: Journal of Cell Biology
https://www.readbyqxmd.com/read/28692648/zebrafish-slc30a10-deficiency-revealed-a-novel-compensatory-mechanism-of-atp2c1-in-maintaining-manganese-homeostasis
#7
Zhidan Xia, Jiayu Wei, Yingniang Li, Jia Wang, Wenwen Li, Kai Wang, Xiaoli Hong, Lu Zhao, Caiyong Chen, Junxia Min, Fudi Wang
Recent studies found that mutations in the human SLC30A10 gene, which encodes a manganese (Mn) efflux transporter, are associated with hypermanganesemia with dystonia, polycythemia, and cirrhosis (HMDPC). However, the relationship between Mn metabolism and HMDPC is poorly understood, and no specific treatments are available for this disorder. Here, we generated two zebrafish slc30a10 mutant lines using the CRISPR/Cas9 system. Compared to wild-type animals, mutant adult animals developed significantly higher systemic Mn levels, and Mn accumulated in the brain and liver of mutant embryos in response to exogenous Mn...
July 10, 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28687732/the-cannabinoid-receptor-interacting-proteins-1-of-zebrafish-are-not-required-for-morphological-development-viability-or-fertility
#8
Laura Fin, Giorgia Bergamin, Roberto A Steiner, Simon M Hughes
The Cannabinoid Receptor Interacting Protein 1 (Cnrip1) was discovered as an interactor with the intracellular region of Cannabinoid Receptor 1 (CB1R, also known as Cnr1 or CB1). Functional assays in mouse show cannabinoid sensitivity changes and Cnrip1 has recently been suggested to control eye development in Xenopus laevis. Two Cnrip1 genes are described in zebrafish, cnrip1a and cnrip1b. In situ mRNA hybridisation revealed accumulation of mRNA encoding each gene primarily in brain and spinal cord, but also elsewhere...
July 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28678442/crispr-cas9-directed-gene-editing-for-the-generation-of-loss-of-function-mutants-in-high-throughput-zebrafish-f0-screens
#9
Sunita S Shankaran, Timothy J Dahlem, Brent W Bisgrove, H Joseph Yost, Martin Tristani-Firouzi
The ability to perform reverse genetics in the zebrafish model organism has been greatly advanced with the advent of the CRISPR (clustered regularly interspaced short palindromic repeats)/Cas9 (CRISPR-associated) system. The high level of efficiency in generating mutations when using the CRISPR/Cas9 system combined with the rapid generation time of the zebrafish model organism has made the possibility of performing F0 screens in this organism a reality. This unit describes a detailed protocol for performing an F0 screen using the CRISPR/Cas9 system in zebrafish starting with the design and production of custom CRISPR/Cas9 reagents for injection...
July 5, 2017: Current Protocols in Molecular Biology
https://www.readbyqxmd.com/read/28663543/nr3c1-null-mutant-zebrafish-are-viable-and-reveal-dna-binding-independent-activities-of-the-glucocorticoid-receptor
#10
N Facchinello, T Skobo, G Meneghetti, E Colletti, A Dinarello, N Tiso, R Costa, G Gioacchini, O Carnevali, F Argenton, L Colombo, L Dalla Valle
Glucocorticoids (GCs) play important roles in developmental and physiological processes through the transcriptional activity of their cognate receptor (Gr). Using CRISPR/Cas9 technology, we established a zebrafish null Gr mutant line and compared its phenotypes with wild type and a zebrafish line with partially silenced gr (gr (s357/s357) ). Homozygous gr (-/-) larvae are morphologically inconspicuous and, in contrast to GR (-/-) knockout mice, viable through adulthood, although with reduced fitness and early life survival...
June 29, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28654864/wolf-hirschhorn-syndrome-candidate-1-whsc1-functions-as-a-tumor-suppressor-by-governing-cell-differentiation
#11
Chuan Yu, Xiaomin Yao, Linjie Zhao, Ping Wang, Qian Zhang, Chengjian Zhao, Shaohua Yao, Yuquan Wei
Wolf-Hirschhorn syndrome candidate 1 (WHSC1) is a histone 3 lysine 36 (H3K36) specific methyltransferase that is frequently deleted in Wolf-Hirschhorn syndrome (WHS). Whsc1 is also found mutated in a subgroup of B-cell derived malignant diseases by genomic translocation or point mutation, both of which resulted in hyperactivity of WHSC1 mediated H3K36 methylation and uncontrolled cell proliferation, suggesting that whsc1 functions as an oncogene. However, here we provided evidences to show that whsc1 also has tumor suppressor functions...
June 24, 2017: Neoplasia: An International Journal for Oncology Research
https://www.readbyqxmd.com/read/28653435/rice-crispr-rapidly-increased-cut-ends-by-an-exonuclease-cas9-fusion-in-zebrafish
#12
Thomas P Clements, Bhavna Tandon, Hendrik A Lintel, Joseph H McCarty, Daniel S Wagner
Application of CRISPR-Cas9 technology in diverse organisms has resulted in an explosion of genome modification efforts. To expand the toolbox of applications, we have created an E. coli Exonuclease I (sbcB) - Cas9 fusion that has altered enzymatic activity in zebrafish embryos. This Cas9 variant has increased mutation efficiency and favors longer deletions relative to wild type Cas9. We anticipate that this variant will allow for more efficient screening for F0 phenotypes and mutation of a larger spectrum of genomic targets including deletion of regulatory regions and creating loss of function mutations in transcription units with poor sequence conservation such as lncRNAs where larger deletions may be required for loss of function...
June 27, 2017: Genesis: the Journal of Genetics and Development
https://www.readbyqxmd.com/read/28648821/caveolae-protect-notochord-cells-against-catastrophic-mechanical-failure-during-development
#13
Ye-Wheen Lim, Harriet P Lo, Charles Ferguson, Nick Martel, Jean Giacomotto, Guillermo A Gomez, Alpha S Yap, Thomas E Hall, Robert G Parton
The embryonic notochord is a flexible structure present during development that serves as scaffold for formation of the vertebrate spine. This rod-like organ is thought to have evolved in non-vertebrate chordates to facilitate locomotion by providing a rigid but flexible midline structure against which the axial muscles can contract. This hydrostatic "skeleton" is exposed to a variety of mechanical forces during oscillation of the body. There is evidence that caveolae, submicroscopic cup-shaped plasma membrane pits, can buffer tension in cells that undergo high levels of mechanical stress...
July 10, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28643258/crispr-cas9-mediated-targeted-knockin-of-exogenous-reporter-genes-in-zebrafish
#14
Atsuo Kawahara
Genome editing technologies such as ZFN, TALEN, and CRISPR/Cas9 efficiently induce DNA double-stranded breaks (DSBs) at a targeted genomic locus, often resulting in a frameshift-mediated target gene disruption. It remains difficult to perform targeted integration of exogenous genes by genome editing technologies. DSBs can be restored through DNA repair mechanisms, such as non-homologous end joining (NHEJ), microhomology-mediated end joining (MMEJ), and homologous recombination (HR). It is well known that HR facilitates homology-dependent integration of donor DNA template into a targeted locus...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28639422/medaka-and-zebrafish-contactin1-mutants-as-a-model-for-understanding-neural-circuits-for-motor-coordination
#15
Miki Takeuchi, Chikako Inoue, Akiko Goshima, Yusuke Nagao, Koichi Shimizu, Hiroki Miyamoto, Takashi Shimizu, Hisashi Hashimoto, Shigenobu Yonemura, Atsuo Kawahara, Yutaka Hirata, Masayuki Yoshida, Masahiko Hibi
A spontaneous medaka ro mutant shows abnormal wobbling and rolling swimming behaviors. By positional cloning, we mapped the ro locus to a region containing the gene encoding Contactin1b (Cntn1b), which is an immunoglobulin (Ig)-superfamily domain-containing membrane-anchored protein. The ro mutant had a deletion in the cntn1b gene that introduced a premature stop codon. Furthermore, cntn1b mutants generated by the CRISPR/Cas9 system and trans-heterozygotes of the CRISPR mutant allele and ro had abnormal swimming behavior, indicating that the cntn1b gene was responsible for the ro-mutant phenotype...
June 22, 2017: Genes to Cells: Devoted to Molecular & Cellular Mechanisms
https://www.readbyqxmd.com/read/28638918/-generation-of-tnnt2a-knock-out-zebrafish-via-crispr-cas9-and-phenotypic-analysis
#16
Lian Liu, Ran-Ran Zhang, Qian Yang, Xu Wang, Yong-Hao Gui
Cardiac troponin T (cTnT) serves as a structural protein of myocardial fiber, and participates in heart excitation-contraction coupling process. Here, we generated tnnt2a (cTnT-coding gene) deletion mutant zebrafish via CRISPR/Cas9 technique, and performed phenotypic analysis of the identified tnnt2a mutants. We observed that there was no significant difference between heterozygous mutant and wild type zebrafish, and the homozygous mutants displayed significant malformations in heart, including cardiac arrest, atrium and ventricle enlargement, pericardium effusion, and the individuals usually died before 7 day post fertilization (dpf)...
June 25, 2017: Sheng Li Xue Bao: [Acta Physiologica Sinica]
https://www.readbyqxmd.com/read/28625504/mutations-in-armc9-which-encodes-a-basal-body-protein-cause-joubert-syndrome-in-humans-and-ciliopathy-phenotypes-in-zebrafish
#17
Julie C Van De Weghe, Tamara D S Rusterholz, Brooke Latour, Megan E Grout, Kimberly A Aldinger, Ranad Shaheen, Jennifer C Dempsey, Sateesh Maddirevula, Yong-Han H Cheng, Ian G Phelps, Matthias Gesemann, Himanshu Goel, Ohad S Birk, Talal Alanzi, Rifaat Rawashdeh, Arif O Khan, Michael J Bamshad, Deborah A Nickerson, Stephan C F Neuhauss, William B Dobyns, Fowzan S Alkuraya, Ronald Roepman, Ruxandra Bachmann-Gagescu, Dan Doherty
Joubert syndrome (JS) is a recessive neurodevelopmental disorder characterized by hypotonia, ataxia, abnormal eye movements, and variable cognitive impairment. It is defined by a distinctive brain malformation known as the "molar tooth sign" on axial MRI. Subsets of affected individuals have malformations such as coloboma, polydactyly, and encephalocele, as well as progressive retinal dystrophy, fibrocystic kidney disease, and liver fibrosis. More than 35 genes have been associated with JS, but in a subset of families the genetic cause remains unknown...
July 6, 2017: American Journal of Human Genetics
https://www.readbyqxmd.com/read/28623876/developmental-history-and-application-of-crispr-in-human-disease
#18
REVIEW
Puping Liang, Xiya Zhang, Yuxi Chen, Junjiu Huang
Genome editing tools are programmable artificial nucleases, mainly including zinc-finger nucleases (ZFNs), transcription activator-like effector nucleases (TALENs) and clustered regularly interspaced short palindromic repeat (CRISPR). By recognizing and cleaving specific DNA sequences, genome editing tools make it possible to generate site-specific DNA double-strand breaks (DSBs) in the genome. DSBs will then be repaired by either error-prone non-homologous end joining (NHEJ) or high-fidelity homologous recombination (HR) mechanisms...
June 17, 2017: Journal of Gene Medicine
https://www.readbyqxmd.com/read/28573077/crispr-cas-genome-surgery-in-ophthalmology
#19
REVIEW
James E DiCarlo, Jesse D Sengillo, Sally Justus, Thiago Cabral, Stephen H Tsang, Vinit B Mahajan
Genetic disease affecting vision can significantly impact patient quality of life. Gene therapy seeks to slow the progression of these diseases by treating the underlying etiology at the level of the genome. Clustered regularly interspaced short palindromic repeats (CRISPR) and CRISPR-associated systems (Cas) represent powerful tools for studying diseases through the creation of model organisms generated by targeted modification and by the correction of disease mutations for therapeutic purposes. CRISPR-Cas systems have been applied successfully to the visual sciences and study of ophthalmic disease - from the modification of zebrafish and mammalian models of eye development and disease, to the correction of pathogenic mutations in patient-derived stem cells...
May 2017: Translational Vision Science & Technology
https://www.readbyqxmd.com/read/28549975/knockdown-of-epigenetic-transcriptional-co-regulator-brd2a-disrupts-apoptosis-and-proper-formation-of-hindbrain-and-midbrain-hindbrain-boundary-mhb-region-in-zebrafish
#20
Tami Murphy, Heather Melville, Eliza Fradkin, Giana Bistany, Gregory Branigan, Kelly Olsen, Catharine R Comstock, Hayley Hanby, Ellie Garbade, Angela J DiBenedetto
Brd2 is a member of the bromodomain-extraterminal domain (BET) family of proteins and functions as an acetyl-histone-directed transcriptional co-regulator and recruitment scaffold in chromatin modification complexes affecting signal-dependent transcription. While Brd2 acts as a protooncogene in mammalian blood, developmental studies link it to regulation of neuronal apoptosis and epilepsy, and complete knockout of the gene is invariably embryonic lethal. In Drosophila, the Brd2 homolog acts as a maternal effect factor necessary for segment formation and identity and proper expression of homeotic loci, including Ultrabithorax and engrailed...
August 2017: Mechanisms of Development
keyword
keyword
83334
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"