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We narrowed to 1,041 results for: ins

Showing: 441 - 460 of 1041 results

  1. What's New in CRISPR - November 2021

    Type
    Blog Post
    ...genomic deletions with or without small insertions. But, instead, PEDAR couples this deletion process to...mammalian cells, especially when fused to effector proteins for gene activation or gene editing. The more ... lab adapted the native PEG10 RNA sequences to instead drive packaging of cargo sequences in the capsid...it is also capable of coding concurrent small insertions to allow in-frame deletions and introduce epitope...mouse model of tyrosinemia, where a pathogenic insertion within the FAH gene was precisely corrected, restoring...

  2. Developing Lab Management Software for Biology

    Type
    Blog Post
    ... learned over the years with the hope that our insights can help steer you in the right direction when... in our current setup, there are no explicit instructions on what to do when something fails. While we... through which she could easily transfer her instructions for dealing with the samples to newer lab members... ourselves up for success by giving explicit instructions to lab members through the software if there...collisions you may encounter: vector, sequence, insert, trait, factor, expression, etc.There are also ...biology terms (plasmid, 5-prime, CRISPR, growth strains, vector backbone, etc.) and you simply don't have...

  3. CRISPR Meets Synthetic Biology: A Conversation with MIT’s Christopher Voigt

    Type
    Blog Post
    ...As Christopher Voigt explains it, his lab at the Massachusetts Institute of Technology has been “working...create an almost limitless number of DNA binding proteins with Cas9 guided by different promoters. The challenge... genetic circuits is getting enough regulatory proteins that don’t interfere with each other. CRISPR is...much easier it is to work with than regulatory proteins. There are still things we haven’t solved that...Nothing too much more sophisticated. There are also proteins, like antibodies. But we are really just using...

  4. Working with Nuclear Receptors

    Type
    Blog Post
    ...controlled by deliberate and compulsory actions instigated by the central nervous system signaling to peripheral...sensors for a diverse set of fat-soluble hormones, vitamins, and dietary lipids. Included in this family are...progesterone, androgens, and estrogens), fat-soluble vitamins A and D, thyroid hormone, fatty acids, oxysterols...composed of a tightly-bound invariant group of proteins, whereas the more loosely bound co-coregulators...explain how more than 300 different coactivator proteins individually contribute to cell regulation in ...acetyltransferase to luciferase, the basic assay remains widely used today.  The sheer abundance of these...

  5. Progress Towards a PAM-Free CRISPR

    Type
    Blog Post
    ...or non-existent PAM requirement, and how these proteins are advantageous in today’s genome editing landscape...the site in question (Kwart et al, 2017). To add insult to injury, the most utilized PAM sequence, that...requirements. Luckily, there are some available.   Cas proteins that don’t utilize NGG   There are plenty of Cas9...same PAM preference of NG was isolated by the Kleinstiver Lab (read more on this lab's other developments...developments below!) (Walton et. al, 2020). These Cas proteins have everything we know and love about Cas9, but...and location.   Nearly PAM-less editing   The Kleinstiver lab sought to address the PAM problem through...

  6. Mobile-CRISPRi: Bringing CRISPRi to Diverse Bacteria

    Type
    Blog Post
    ...resistance selection markers, gRNAs, and dCas9 proteins. Second, it can be introduced into a broader range...tnsB, tnsC, tnsD, and tnsE), and a plasmid that contains the Mobile CRISPRi cassette flanked by left and...recipient's genome. Antibiotic plates lacking DAP select against donor bacteria and for recipients with an integrated...CRISPRi to non-model bacteria including pathogenic strains and environmental isolates. For example, Peters...expressed RFP reporter, was variable across bacterial strains, ranging from an ~8 to 150-fold reduction, with...the relative frequency of each of the 40 library strains was measured after 6 and 12 generations with or...

  7. Degrading DNA with Cascade-Cas3

    Type
    Blog Post
    ..., and Cas11. Type I-E Cascades contains all five of these Cas proteins, while type I-C Cascades do not...boundaries defined by anti-CRISPR proteins or running into other proteins naturally bound to the DNA. Cas3...The helicase domain is then activated, and Cas3 begins unraveling the double-stranded DNA (dsDNA) in what...Cas9 vs. The Other Cas(s) CRISPR 101: Anti-CRISPR Proteins Switch Off CRISPR-Cas Systems INTEGRATE: Bacterial...

  8. Common Injection Routes in Mice

    Type
    Blog Post
    ... as “instillation” or “gavage,” as they do not require any punctures. Intratracheal instillation Intratracheal...Skill required: advanced Intranasal instillation Intranasal instillation is very similar to its intratracheal...compounds, as circulation is slower, and more institutional oversight is required. Restraint: mechanical...Intratracheal instillation is used to deliver substances directly to the lungs. It is an advanced technique...

  9. Antibodies 101: Flow Compensation

    Type
    Blog Post
    ... depending on your flow cytometer’s setup. For instance, BV510 and AmCyan have almost identical emission...and how do I fix it? When plotting two channels against each other, you should be able to draw perpendicular...single-color APC control, with APC and APC-CY7 plotted against each other. Since it is a single-color control,...After increasing the compensation values for APC against APC-Cy7, the populations are in more of a straight...compensation value of five was applied to APC-Cy7 against APC to correct for this bleed. A compensation value...population is not a double-positive population and is instead due to bleeding, you will see the populations move...

  10. Adenoviral Delivery of CRISPR/Cas9 Aims to Expand Genome Editing to Primary Cells

    Type
    Blog Post
    ...encapsulating the genome is majorly composed of three proteins that can be easily modified in order to facilitate...provide a large transgene packaging capacity. For instance, with a packaging capacity of about 6 kb, the ...mechanism to knock out genes as a result of an insertion, a deletion or a frameshift (Ding et al., 2014...attribute this phenomenon to the presence of terminal proteins capping the ends of linear double-stranded AdV...several biological systems. It has been used for instance in inherited disorders such as B-thalassemia, ...steatohepatitis cancer. In deficiencies of plasma proteins where Adv vector delivery is often used, the CRISPR...

  11. Tips for a 1st time AAV user (by a Rookie AAV user)

    Type
    Blog Post
    ... myself writing AAV production tricks into the margins of my protocol. While these tips weren’t critical...replication uses the host’s polymerase, but requires Rep proteins to process a double-stranded intermediate into...cultures of your AAV transfer plasmid at 30 °C instead of 37 °C and then screen for ITR recombination ...transform AAV transfer plasmids into bacterial strains, like NEB Stable. NEB Stable competent cells lack... should consider performing PEG precipitation. Instead of sonicating the cell pellet, I lyse the cells... Stone and Harshana de Silva Feelixge at Fred Hutchinson Cancer Center for teaching me about AAV production...

  12. Transgenic Organisms, Cas9 Gene Drives, and Appropriate Safeguards

    Type
    Blog Post
    ...Wyss Technology Development Fellow at the Wyss Institute and Harvard Medical School. Scientists making ...drive? The simplest way to make a gene drive is to insert an endonuclease gene within its own cut site1. ...spreads through the wild population and immunizes it against the first drive. Laboratories interested in building...question), why not use them whenever applicable?Against this, consider the cost of an accidental release...accidental release could delay real-world applications against scourges such as malaria and dengue for many years... Holm, D. G. & Suzuki, D. T. Genetic Control of Insect Populations: I. Cage Studies of Chromosome Replacement...

  13. CRISPR 101: Ribonucleoprotein (RNP) Delivery

    Type
    Blog Post
    ...such as PX459, which encodes Cas9 and contains a site for inserting a custom gRNA.  While this methodology...translation delays editing What are Cas9-gRNA ribonucleoproteins? One alternative approach, which avoids many...Schier laboratories. Delivering Cas9-gRNA ribonucleoproteins  An advantage of performing CRISPR experiments...vivo applications. This technique utilizes Cas9 proteins harboring receptor ligands (C in the figure above...., et al. "Cationic lipid-mediated delivery of proteins enables efficient protein-based genome editing...

  14. DNA Purification Without a Kit

    Type
    Blog Post
    ...causes the proteins and genomic DNA to precipitate. Plasmid DNA is free in solution. Proteins and genomic...the same principles: cells are lysed, RNAs and proteins are removed to leave you with DNA. This DNA is...you lyse the bacteria and denature the DNA and proteins in solution. The pH is then lowered using a renaturing...phenol chloroform extraction to remove remaining proteins and RNase. Finally, DNA is precipitated with alcohol...identical to that of commercially available kits but instead of binding DNA to silica columns, it’s bound to...

  15. Save Time with Transient Plant Leaf Transformations

    Type
    Blog Post
    ...these experiments can be done in days to weeks instead of months to years. In the plant sciences “transient...evaluate its function. In nature Agrobacterium contains a plasmid with a T-DNA (transfer-DNA) region. ...pSB166 - pL2_pSB90_tMAS::rLUC-I::pMAS. Fluorescent proteins (FP, e.g. GFP) can be used in many ways. Often...from Agrobacterium. Test different Agrobacterium strains We used the disarmed Agrobacterium tumefaciens ...plants using syringe agroinfiltration." Recombinant proteins from plants. Humana Press, 2009. 41-50. PubMed... 5.02 (2003): 103-115. Hu, Ching-yeh, et al. "Intrinsic GUS-like activities in seed plants." Plant cell...

  16. Transferable Skills Guide: Creativity

    Type
    Blog Post
    ...yourself needing to brainstorm with a team. One major challenge with these brainstorming sessions is avoiding...with unlimited time? Another strategy for your brainstorm session is to start with something completely... students during an interview. When they were instructed to use the three-ring binder as a starting point...people to agree with the most prominent idea, and instead building an environment where everyone has their... ideas that I have found helpful in my team brainstorming sessions.  Allow the group time to think about...

  17. Plasmids 101: Shuttle Vectors

    Type
    Blog Post
    ...origin of replication (ori), where DNA replication begins, so a bacterial plasmid needs a compatible ori ... divide. In transient transfection, the vector remains episomal, meaning it stays separate from the genome...synthesis, and the neomycin resistance gene protects against any of them. But different aminoglycosides work...options doesn’t end there. Make sure you read the instructions for whatever antibiotic you choose to ensure...to spontaneously develop resistance to selection toxins. Auxotrophic selection is useful for producing ...researcher may choose not impose selection on cells and instead to use a vector with a reporter, such as a fluorescent...

  18. CRISPR 101: Which Cas9 Do I Choose for My CRISPR Experiment?

    Type
    Blog Post
    ...with higher specificity (eSpCas9 and HypaCas9) instead.  Choosing a Cas9 for site-specific modifications... effects. The SpG variant, discovered by the Kleinstiver group has a PAM of NGN (Walton et al., 2020)....system can be used with a variety of impaired Cas9 proteins (such as SpRY) with altered PAM requirements, ...facilitates recruitment of multiple activation domains to the same genetic locus via co-expression of ...epitope tagged dCas9 and antibody-activator fusion proteins. The Synergistic Activation Mediator complex, ..., R. T., Christie, K. A., Whittaker, M. N. & Kleinstiver, B. P. Unconstrained genome targeting with near-PAMless...

  19. Advanced Uses of Cre-lox and Flp-FRT - A Neuroscientist’s View

    Type
    Blog Post
    ...expression while proteins needed for later experiments (cellular tracking for instance) can be controlled...Tamoxifen is added. Tamoxifen then binds to the ER-LDB domains of the fusions allowing Cre/FLP translocate to ...fluorescent cytoplasmic markers (e.g. eYFP) and synaptic proteins (e.g. postsynaptic PSD95-mcherry) are used in ...In order to analyze the function of individual proteins in neuronal circuits or synaptic remodeling, researchers...is fascinated by the question of how genes and proteins coordinate billions of neurons to form the functional...

  20. Healthcare Consulting: A Door to the Business of Life Sciences

    Type
    Blog Post
    ...pharmaceutical companies, biotech start-ups, health insurance companies, and governments on the most effective...physicians and patients, shaping discussions with insurance companies about the pricing and coverage of drugs...situations might be especially challenging. For instance, the client might need to get a large amount of...occasions, clients can be excessively demanding. For instance, a client may offer a lot of pointed feedback ...understanding of the molecular behaviors of chemicals and proteins to learn how a particular drug or medical device...therapeutic approach brings to patients, doctors, and insurance providers, and is crucial to how our clients’ ...
Showing: 441 - 460 of 1041 results