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Showing: 61 - 80 of 309 results
  1. Adeno-associated Viruses (AAVs) for Genome Editing

    Type
    Blog Post
    Published
    March 27, 2018, 1:32 p.m.
    ... introduce naturally occurring cancer-causing mutations into the endogenous allele of the STAG2 tumor ... introducing non-sequence specific frameshift mutations through aberrant double strand break repair, it...epitope tags, or the introduction of dominant mutations of a gene into the endogenous allele in cultured...template to mouse zygotes and thereby correct a mutation that causes Hemophilia B. Unfortunately, work ...segregation in human cells harboring tumor-derived mutations in STAG2." PLoS genetics 12.2 (2016): e1005865...using adeno-associated virus (AAV)." Chromosomal Mutagenesis. Humana Press, New York, NY, 2015. 75-103. PubMed...
  2. Evolution of Lab Techniques

    Type
    Blog Post
    Published
    June 21, 2016, 2:30 p.m.
    ...particular gene mutation, southern blotting can be used to identify the presence of that mutated gene. In southern...the presence of the mutated β globin gene that causes sickle cell anemia. The mutation happens to destroy...the probe (for example, has the sequence of the mutated gene the researcher is searching for), then the...southern blotting being used to identify a gene mutation is the genetic test used for sickle cell anemia...
  3. Editor's Choice, August 2016

    Type
    Blog Post
    Published
    Sept. 2, 2016, 1:32 p.m.
    ...optimize and troubleshoot the system. Site Directed Mutagenesis by PCR & Single Base Editing with CRISPR For ...personal experience, is a quick way to generate many mutated plasmid constructs. The second post was contributed...specificity issues, and other means of generating mutations in live cells are all discussed further in this...technology may make some uses of Site Directed Mutagenesis by PCR obsolete! Honorable mentions Of course... in chronological order here: Site Directed Mutagenesis by PCR Google Forums Round Up: First Impressions...
  4. FastCloning: A Newer, Simpler Cloning Technique

    Type
    Blog Post
    Published
    Nov. 1, 2016, 2:30 p.m.
    ...several struggles with these techniques: unwanted mutations due to excessive PCR cycles or low fidelity Taq...purify and sequence the plasmid to confirm no mutations were introduced during PCR or any subsequent steps...fidelity DNA polymerases, I have never had any mutations introduced into my inserts. However, with any ...technique there is a chance of introducing an unwanted mutation. Tips for high efficiency cloning Now that you...Plasmid Cloning by PCR Perform Site Directed Mutagenesis by PCR Catch up on Your Plasmid Background with...
  5. CRISPR 101: Drug discovery and CRISPR

    Type
    Blog Post
    Published
    May 4, 2023, 1 p.m.
    ...knock-ins of patient mutations which are variants of unknown significance – mutations with unclear effects...with defined, straightforward causes (a specific mutation in a known gene = disease onset) may be best served...accessible, fast, and easy. In cases where the mutational basis of a disease is known – repeat expansion...CRISPR could even be used to generate patient mutations and then test both individual and combinatorial...
  6. Viral Vectors 101: Viruses as Biological Tools

    Type
    Blog Post
    Published
    March 21, 2023, 1:15 p.m.
    ...the fear of random genomic integration causing mutagenesis in the host. Adenoviruses can deliver relatively...Dividing Cells Moderate Immunogenicity Insertional Mutagenesis Possible Lentivirus Infects non-dividing...non-dividing cells Insertional Mutagenesis Possible Adenovirus Remains Episomal (Little Risk of...of Insertional Mutagenesis) High Gene Expression Infects Non-Dividing Cells Large Packaging Capacity (... AAV Remains Episomal (Little Risk of Mutagenesis) Very Low Immunogenicity Infects Non-Dividing...
  7. Plasmids 101: Blue-white Screening

    Type
    Blog Post
    Published
    June 4, 2015, 1:03 p.m.
    ...α-peptide) to a lacZΔM15-mutant bacterial cell in trans complements the mutation allowing for a functional... that deleting a section from the lacZ gene (a mutation called lacZΔM15) creates a non-functional β-galactosidase...will not complement the cell's β-galactosidase mutation. An unsuccessful cloning reaction leaves the α-peptide...proper E. coli strain (i.e. contains the lacZΔM15 mutation): XL1-Blue, DH5α, DH10B, JM109, STBL4, JM110, ...
  8. Plasmids 101: Yeast Vectors

    Type
    Blog Post
    Published
    Feb. 25, 2014, 7:11 p.m.
    ...limited to: rapid growth, ease of replica plating and mutant isolation, a well-defined genetic system, and a...recombination to facilitate simple gene replacement/mutation. Yeast expression plasmids used in the lab typically...high rates of spontaneously occurring resistant mutants and the insensitivity of yeast strains to some ...missing nutrient. Scientists can exploit these host mutations by including a copy of a functional gene which... S. pombe  no no *FOA in fission yeast induces mutation in the ura5+ gene in addition to ura4+. leu1...
  9. What's New in CRISPR - November 2021

    Type
    Blog Post
    Published
    Nov. 18, 2021, 2:15 p.m.
    ...dominant negative mutation in MLH1 (PE4 = PE2+MLH1dn and PE5 = PE3+MLH1dn). Silent mutations added near the...the Cas12f scaffold gRNA and making strategic mutations in the DNA binding cavity of Cas12f. The CasMINI...  and base editing, whereas a different set of mutations (the “V3.1” version) works best for genome editing...boosts the efficiency of prime editing to correct mutations in a variety of target genes and cell types. Their...
  10. Plasmids 101: FLEx Vectors

    Type
    Blog Post
    Published
    April 28, 2016, 2:30 p.m.
    ...Introduction of a conditional point mutation or functional mutation in vivo: Similar to a conditional rescue...fragment. The availability of both wild-type and mutant loxP sites has allowed scientists to leverage this...wild-type pair (loxP, black arrowheads) and one mutated pair (for example- lox511, white arrowheads). It...conditionally test the function of various point mutations and truncations in the absence of the endogenous...
  11. xCas9: Engineering a CRISPR Variant with PAM Flexibility

    Type
    Blog Post
    Published
    March 28, 2018, 6:52 p.m.
    ...and select for Cas9 mutants with PAM flexibility. In this system, the mutagenesis plasmid (MP6) permits... Base editing, another method to create point mutations, also has a strict editing window about 15 nt ...NGAG and NGCG and SaCas9 with an NNGRRN PAM by mutagenizing the PAM-interacting domain. However, these alternative...permits quick, large-scale mutation of the gene of interest. They created a selection phage (SP) to carry ...
  12. Polymerase Chain Reaction Overview and Applications

    Type
    Blog Post
    Published
    Aug. 10, 2021, 1:15 p.m.
    ...colony PCR, or for generating mutated sequences for site-directed mutagenesis.  Quantitative polymerase chain...sequences that are rare, for example, rare alleles or mutations. ddPCR also does not require a reference or standard...interest  Molecular Cloning Site-directed mutagenesis Molecular Diagnostics qPCR Quantify starting... PCR  Plasmids 101: Colony PCR Site Directed Mutagenesis by PCR Resources on Addgene.org Protocol: Polymerase...
  13. Simplify Cloning with in vivo Assembly

    Type
    Blog Post
    Published
    Oct. 18, 2018, 12:37 p.m.
    ... to the 5’ end of the reverse primer. Mutagenesis - Mutagenesis is performed by designing primers astride...modification, from insertions, deletions, and point mutagenesis to complex assembly of multiple genes. Primer... N-terminus of a protein-coding sequence, or a mutation can be introduced in a gene, while adding a GFP-tag...rapid method for recombination and site-specific mutagenesis by placing homologous ends on DNA using polymerase...
  14. 22 Hot Plasmid Technologies from 2014

    Type
    Blog Post
    Published
    Jan. 6, 2015, 5:21 p.m.
    ...Updated mini-transposon vector for bacterial mutagenesis or gene targeting Victor de Lorenzo's lab...mini-Tn5 vector that can be used to generate random mutagenesis libraries or to insert heterologous genes, reporters...this vector, called pBAM1, by conducting random mutagenesis in the soil bacterium Pseudomonas putida and ...three dimensional structure of GFP, its brighter mutant S65T-GFP, and the subsequent biochemical characterization...proteins are derived from the Timer protein - a mutant of the fluorescent protein dsRed that changes irreversibly...recombination template vectors, to perform multiple site mutagenesis and create complex fusion or recombination vectors...The group further optimized Chrimson through mutagenesis (K176R) to improve the otherwise slow off-kinetics...
  15. Five Popular Model Organisms

    Type
    Blog Post
    Published
    April 11, 2019, 12:39 p.m.
    ...different mutations found in leukemia, the Lowe lab was able to identify a set of mutations that made ...Lowe’s lab utilized mice to study how different mutations in leukemia impact different treatment regimens...by a specific gene. For example, several genes mutated in human cancers have a homolog involved in yeast... yeast: A model organism for studying somatic mutations and cancer." Nature Education 1.1 (2008): 183....
  16. Targeting HIV-1 with CRISPR: Shock and Kill or Cut it Out?

    Type
    Blog Post
    Published
    May 10, 2016, 2:30 p.m.
    ...and CRISPR/Cas9 have also been used to create mutations in genes essential to HIV-1 replication. However...CRISPR therapies through PAM or seed sequence mutations. Multiple gRNAs could be used to combat this problem...LTRs or essential genes. Many of these escape mutations were located near the Cas9 cut site, leading Wang...escape occurs in an animal model. If these escape mutations are frequent, the dCas9-mediated “shock and kill... S, Wainberg MA, Liang C. CRISPR/Cas9-Derived Mutations Both Inhibit HIV-1 Replication and Accelerate ...
  17. Recombinase-based State Machines Enable Order-dependent Logic in vivo

    Type
    Blog Post
    Published
    July 28, 2016, 2:30 p.m.
    ...which regulatory proteins, signaling molecules, mutations, and environmental conditions drive certain cellular...arrange attB-attP pairs on a register to record all permuted substrings of a set of chemicals. Specific examples...arrangements that should be able to record all permuted substrings of up to seven chemical inputs are ...a population to correctly record each possible permuted substring of the inputs, and that five hour inductions...percent of cells to correctly record each possible permuted substring of inputs (see Figure S9 of our paper...
  18. PiggyBac-ing Through the Genome Editing Field

    Type
    Blog Post
    Published
    May 31, 2016, 3:30 p.m.
    ...completely seamless manner, leaving no sequences or mutations behind. Furthermore, piggyBac™ offers a large ...is constitutively-active or a dominant-negative mutant. Reducing the copy number can also mitigate the...excision-only piggyBac™ transposase (PBx), which contains mutations making it competent for excision, but defective...primarily two other ways to create specific point mutations by gene editing. First, instead of using piggyBac...piggyBac™ transposase or hyperactive transposase mutants [7], it is generally not as efficient as Cre recombinase...
  19. A History of Genome Engineering in Popular Culture

    Type
    Blog Post
    Published
    Feb. 25, 2020, 2:15 p.m.
    ...genome and are inefficient at introducing point mutations. In 2016, the researchers at the Broad Institute... envisioned a new strategy to introduce point mutations in the genome. They fused a catalytically impaired...a tRNA deaminase enzyme, TadA) to induce a A→G mutation at the target genomic loci. Together, CBE and ...the prime editor can install all possible point mutations, delete short stretches of DNA and even insert...doi.org/10.1038/nprot.2013.143 Seligman LM (2002) Mutations altering the cleavage specificity of a homing ...
Showing: 61 - 80 of 309 results