CRISPR/Cas9 is a powerful new technique for genome editing that allows DNA to be easily cut and modified. It involves using the Cas9 enzyme, guided by RNA, to create targeted double-stranded breaks in DNA which are then repaired, allowing the DNA sequence to be altered. This system was adapted from a bacterial immune system. CRISPR/Cas9 represents a major breakthrough as it is simpler, cheaper and more accurate than previous genome editing methods. It has already been used to edit genes in numerous organisms and holds promise for applications like correcting genetic diseases. However, off-target effects and ethical concerns surrounding its use in humans remain limitations that need to be addressed.
Have you considered that protein over-expression or inefficient mRNA knockdown may be masking physiological effects in your assays? Increasingly scientists are moving to endogenous gene-editing to characterise the function of their genes of interest.
Dr Chris Thorne from Cambridge Biotech Horizon Discovery discusses the ground breaking gene-editing technology CRISPR. The simplicity of experimental design has led to rapid adoption of the technology across the scientific community. However, challenges remain.
This Slidedeck focuses specifically on implementing CRISPR experiments, and explore a number of key considerations crucial to maximising chances of targeting success, whether your goal is to generate a knock-out or a knock-in. Chris also takes a look at some of the alternative uses of CRISPR, including sgRNA genome wide synthetic lethality screens.
The slides aim to support those researchers either planning to or already using CRISPR gene-editing in their lab. Horizon Discovery have also recently launched a program aimed specifically at academic cell biologists to promote the adoption of CRISPR by offering FREE CRISPR Reagents for knock-out cell line generation - more information available here. http://www.horizondiscovery.com/what-we-do/discovery-toolbox/genassist-crispr--raav-genome-editing-tools
i explained about basics of genome engineering and crispr system.
CRISPR will change the world and it is just the beginning, are you ready to meet the future? you think its great and beautiful or.....?
please give your feedback to my email
pooyanaghshbandi@yahoo.com
i am starting to write a critical and fantastic review article about CRISPR, if you are interested to join please contact me.
Have you considered that protein over-expression or inefficient mRNA knockdown may be masking physiological effects in your assays? Increasingly scientists are moving to endogenous gene-editing to characterise the function of their genes of interest.
Dr Chris Thorne from Cambridge Biotech Horizon Discovery discusses the ground breaking gene-editing technology CRISPR. The simplicity of experimental design has led to rapid adoption of the technology across the scientific community. However, challenges remain.
This Slidedeck focuses specifically on implementing CRISPR experiments, and explore a number of key considerations crucial to maximising chances of targeting success, whether your goal is to generate a knock-out or a knock-in. Chris also takes a look at some of the alternative uses of CRISPR, including sgRNA genome wide synthetic lethality screens.
The slides aim to support those researchers either planning to or already using CRISPR gene-editing in their lab. Horizon Discovery have also recently launched a program aimed specifically at academic cell biologists to promote the adoption of CRISPR by offering FREE CRISPR Reagents for knock-out cell line generation - more information available here. http://www.horizondiscovery.com/what-we-do/discovery-toolbox/genassist-crispr--raav-genome-editing-tools
i explained about basics of genome engineering and crispr system.
CRISPR will change the world and it is just the beginning, are you ready to meet the future? you think its great and beautiful or.....?
please give your feedback to my email
pooyanaghshbandi@yahoo.com
i am starting to write a critical and fantastic review article about CRISPR, if you are interested to join please contact me.
An Introduction to Crispr Genome Editing
Crispr cas: A new tool of genome editing
CRISPRs (Clustered Regularly Interspaced Short Palindromic Repeats) are part of an adaptive defense mechanism in bacteria and archaea. Use of the CRISPR/Cas9 system for genome editing has been a major technological breakthrough, making genome modification in cells or organisms fast, more efficient, and much more robust than previous genome editing methods. Single guide RNAs (sgRNAs) or guide RNAs (gRNAs) direct and activate the Cas9 endonuclease at a specific genomic sequence. Cas9 then cleaves the target DNA, making it available for repair by the non-homologous end joining (NHEJ) system or for creating an insertion site for exogenous donor DNA by homologous recombination.
CRISPR (clustered regularly interspaced short palindromic repeats) is a family of DNA sequences found within the genomes of prokaryotic organisms such as bacteria and archaea. These sequences are derived from DNA fragments of bacteriophages that have previously infected the prokaryote and are used to detect and destroy DNA from similar phages during subsequent infections. Hence these sequences play a key role in the antiviral defense system of prokaryotes.
Cas9 (CRISPR-associated protein 9) is an enzyme that uses CRISPR sequences as a guide to recognize and cleave specific strands of DNA that are complementary to the CRISPR sequence. Cas9 enzymes together with CRISPR sequences form the basis of a technology known as CRISPR-Cas9 that can be used to edit genes within organisms.This editing process has a wide variety of applications including basic biological research, development of biotechnology products, and treatment of diseases.
The CRISPR-Cas system is a prokaryotic immune system that confers resistance to foreign genetic elements such as those present within plasmids and phages that provides a form of acquired immunity. RNA harboring the spacer sequence helps Cas (CRISPR-associated) proteins recognize and cut foreign pathogenic DNA. Other RNA-guided Cas proteins cut foreign RNA. CRISPR are found in approximately 50% of sequenced bacterial genomes and nearly 90% of sequenced archaea.
CRISPR-Cas9 is a genome editing tool that is creating a buzz in the science world. It is faster, cheaper and more accurate than previous techniques of editing DNA and has a wide range of potential applications.
Genome editing with the CRISPR-Cas9 system has become one of the major tools in modern biotechnology. This slide share discusses the fundamentals in a simple, easy to understand format.
An Introduction to Crispr Genome Editing
Crispr cas: A new tool of genome editing
CRISPRs (Clustered Regularly Interspaced Short Palindromic Repeats) are part of an adaptive defense mechanism in bacteria and archaea. Use of the CRISPR/Cas9 system for genome editing has been a major technological breakthrough, making genome modification in cells or organisms fast, more efficient, and much more robust than previous genome editing methods. Single guide RNAs (sgRNAs) or guide RNAs (gRNAs) direct and activate the Cas9 endonuclease at a specific genomic sequence. Cas9 then cleaves the target DNA, making it available for repair by the non-homologous end joining (NHEJ) system or for creating an insertion site for exogenous donor DNA by homologous recombination.
CRISPR (clustered regularly interspaced short palindromic repeats) is a family of DNA sequences found within the genomes of prokaryotic organisms such as bacteria and archaea. These sequences are derived from DNA fragments of bacteriophages that have previously infected the prokaryote and are used to detect and destroy DNA from similar phages during subsequent infections. Hence these sequences play a key role in the antiviral defense system of prokaryotes.
Cas9 (CRISPR-associated protein 9) is an enzyme that uses CRISPR sequences as a guide to recognize and cleave specific strands of DNA that are complementary to the CRISPR sequence. Cas9 enzymes together with CRISPR sequences form the basis of a technology known as CRISPR-Cas9 that can be used to edit genes within organisms.This editing process has a wide variety of applications including basic biological research, development of biotechnology products, and treatment of diseases.
The CRISPR-Cas system is a prokaryotic immune system that confers resistance to foreign genetic elements such as those present within plasmids and phages that provides a form of acquired immunity. RNA harboring the spacer sequence helps Cas (CRISPR-associated) proteins recognize and cut foreign pathogenic DNA. Other RNA-guided Cas proteins cut foreign RNA. CRISPR are found in approximately 50% of sequenced bacterial genomes and nearly 90% of sequenced archaea.
CRISPR-Cas9 is a genome editing tool that is creating a buzz in the science world. It is faster, cheaper and more accurate than previous techniques of editing DNA and has a wide range of potential applications.
Genome editing with the CRISPR-Cas9 system has become one of the major tools in modern biotechnology. This slide share discusses the fundamentals in a simple, easy to understand format.
An Introduction to Crispr Genome EditingChris Thorne
In this short presentation, I make a case for doing genome editing vs some of the approaches that have gone before, describe some of the tools available, and the focus on CRISPR-Cas9, what it is, where it's come from and how it works.
The CRISPR/Cas system is a prokaryotic immune system that confers resistance to foreign genetic elements which has been first introduced by Jennifer Doudna. Here is the review of the CRISPR system principal and applications.
CRISPR system is very simple, consisted of a Cas9 protein and a single guided RNA. With the guidance of sgRNA, Cas9 could cause a double stranded breaks in the target site.
It is very fast and new technique for detection and degradation of viral DNA and it is so helpful for us to understand how to degraded viral DNA... what type of function naturally present in bacteria........ so its very excellent technique
Two approaches (clone by clone & whole genome shotgun).
Types of DNA sequencing ( 1st, next and 3rd).
Crop genomes sequenced . (Example :Arabidopsis,Rice, Pigeon pea)
What is greenhouse gasses and how many gasses are there to affect the Earth.moosaasad1975
What are greenhouse gasses how they affect the earth and its environment what is the future of the environment and earth how the weather and the climate effects.
Multi-source connectivity as the driver of solar wind variability in the heli...Sérgio Sacani
The ambient solar wind that flls the heliosphere originates from multiple
sources in the solar corona and is highly structured. It is often described
as high-speed, relatively homogeneous, plasma streams from coronal
holes and slow-speed, highly variable, streams whose source regions are
under debate. A key goal of ESA/NASA’s Solar Orbiter mission is to identify
solar wind sources and understand what drives the complexity seen in the
heliosphere. By combining magnetic feld modelling and spectroscopic
techniques with high-resolution observations and measurements, we show
that the solar wind variability detected in situ by Solar Orbiter in March
2022 is driven by spatio-temporal changes in the magnetic connectivity to
multiple sources in the solar atmosphere. The magnetic feld footpoints
connected to the spacecraft moved from the boundaries of a coronal hole
to one active region (12961) and then across to another region (12957). This
is refected in the in situ measurements, which show the transition from fast
to highly Alfvénic then to slow solar wind that is disrupted by the arrival of
a coronal mass ejection. Our results describe solar wind variability at 0.5 au
but are applicable to near-Earth observatories.
Earliest Galaxies in the JADES Origins Field: Luminosity Function and Cosmic ...Sérgio Sacani
We characterize the earliest galaxy population in the JADES Origins Field (JOF), the deepest
imaging field observed with JWST. We make use of the ancillary Hubble optical images (5 filters
spanning 0.4−0.9µm) and novel JWST images with 14 filters spanning 0.8−5µm, including 7 mediumband filters, and reaching total exposure times of up to 46 hours per filter. We combine all our data
at > 2.3µm to construct an ultradeep image, reaching as deep as ≈ 31.4 AB mag in the stack and
30.3-31.0 AB mag (5σ, r = 0.1” circular aperture) in individual filters. We measure photometric
redshifts and use robust selection criteria to identify a sample of eight galaxy candidates at redshifts
z = 11.5 − 15. These objects show compact half-light radii of R1/2 ∼ 50 − 200pc, stellar masses of
M⋆ ∼ 107−108M⊙, and star-formation rates of SFR ∼ 0.1−1 M⊙ yr−1
. Our search finds no candidates
at 15 < z < 20, placing upper limits at these redshifts. We develop a forward modeling approach to
infer the properties of the evolving luminosity function without binning in redshift or luminosity that
marginalizes over the photometric redshift uncertainty of our candidate galaxies and incorporates the
impact of non-detections. We find a z = 12 luminosity function in good agreement with prior results,
and that the luminosity function normalization and UV luminosity density decline by a factor of ∼ 2.5
from z = 12 to z = 14. We discuss the possible implications of our results in the context of theoretical
models for evolution of the dark matter halo mass function.
This pdf is about the Schizophrenia.
For more details visit on YouTube; @SELF-EXPLANATORY;
https://www.youtube.com/channel/UCAiarMZDNhe1A3Rnpr_WkzA/videos
Thanks...!
Observation of Io’s Resurfacing via Plume Deposition Using Ground-based Adapt...Sérgio Sacani
Since volcanic activity was first discovered on Io from Voyager images in 1979, changes
on Io’s surface have been monitored from both spacecraft and ground-based telescopes.
Here, we present the highest spatial resolution images of Io ever obtained from a groundbased telescope. These images, acquired by the SHARK-VIS instrument on the Large
Binocular Telescope, show evidence of a major resurfacing event on Io’s trailing hemisphere. When compared to the most recent spacecraft images, the SHARK-VIS images
show that a plume deposit from a powerful eruption at Pillan Patera has covered part
of the long-lived Pele plume deposit. Although this type of resurfacing event may be common on Io, few have been detected due to the rarity of spacecraft visits and the previously low spatial resolution available from Earth-based telescopes. The SHARK-VIS instrument ushers in a new era of high resolution imaging of Io’s surface using adaptive
optics at visible wavelengths.
This presentation explores a brief idea about the structural and functional attributes of nucleotides, the structure and function of genetic materials along with the impact of UV rays and pH upon them.
67. DynamicImagingofgenomicloci
Chen et al., Cell, 2013, Dynamic imaging of genomic loci in living human cells
by an optimized CRISPR/Cas system
AttachedaGFPtoanuclease-deficient Cas9(dCas9)
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68. DynamicImagingofgenomicloci
Chen et al., Cell, 2013, Dynamic imaging of genomic loci in living human cells
by an optimized CRISPR/Cas system
AttachedaGFPtoanuclease-deficient Cas9(dCas9)
21
69. DynamicImagingofgenomicloci
Chen et al., Cell, 2013, Dynamic imaging of genomic loci in living human cells
by an optimized CRISPR/Cas system
AttachedaGFPtoanuclease-deficient Cas9(dCas9)
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77. Geneticallymodifyhumanembryos
Liang et al., Protein Cell, 2015, CRISPR/Cas9-mediated
gene editing in human tripronuclear zygotes
Triedtomutatethehumanβ-globin(HBB)genein‘non-viable’
embryos(β-thalassaemia)
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78. Geneticallymodifyhumanembryos
Liang et al., Protein Cell, 2015, CRISPR/Cas9-mediated
gene editing in human tripronuclear zygotes
Triedtomutatethehumanβ-globin(HBB)genein‘non-viable’
embryos(β-thalassaemia)
7of86embryosweresuccessfullymutated
Muchmorehigherratesofoff-targeting
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79. Geneticallymodifyhumanembryos
Liang et al., Protein Cell, 2015, CRISPR/Cas9-mediated
gene editing in human tripronuclear zygotes
Triedtomutatethehumanβ-globin(HBB)genein‘non-viable’
embryos(β-thalassaemia)
7of86embryosweresuccessfullymutated
Muchmorehigherratesofoff-targeting
Raisehugeethicalconcerns…
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