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TypeBlog PostPublishedAug. 20, 2019, 12:31 p.m....need to be given some time to adapt to a testing apparatus. General stress levels of the test animal may ...the humans’ audible spectrum. The experimental apparatus should be cleaned thoroughly between animals as...excitation or inhibition upon light (or drug) application. Genetic manipulation can also reduce expression...after injection. Therefore, it’s crucial to appropriately time the injection about two weeks before the...
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How-to: 5 Steps to a Great Panel Discussion
TypeBlog PostPublishedOct. 22, 2014, 1:57 p.m....organizers and moderator should have a well-planned approach to making the event interesting and engaging. ...information and remind them about the event as it approaches. Room set-up and logistics To make a really...and forth within the panel. Go with it when this happens, but get things back on track if the direction ...talk and the speaker goes over 1 hour, watch what happens to the attention of the audience – phones come ... -
The AAVantages of AAV in CRISPR Screens
TypeBlog PostPublishedFeb. 4, 2025, 2:15 p.m....working with mice and slightly less red tape for approval processes. Additionally, while both AAV and lentivirus...have capacities of 8–12 kb, while AAV only has approximately 4.7 kb — which means that when using Cas9, you... Platforming AAV Interest in interrogating and mapping the genetic landscape of tissue-specific diseases...Performing In Vivo CRISPR Screens Using the FITS Approach Additional resources at addgene.org CRISPR pooled... -
Twenty Years of Addgene Sharing: CRISPR
TypeBlog PostPublishedApril 18, 2024, 1:15 p.m.... per year, or approximately 104 plasmids shipped per working day, including appropriate MTAs and customs...of CRISPR tools has grown steadily, gaining approximately 2,000 plasmids/year from 2017 to 2023. This ... joining the Addgene CRISPR community, with approximately 100 new CRISPR depositors each year. ... -
Antibodies 101: Conventional vs Spectral Flow Cytometry
TypeBlog PostPublishedAug. 3, 2023, 1:15 p.m....order to correct for this, compensation has to be applied to “subtract” this spillover and correctly distinguish...designing your panel. If you have two highly overlapping cellular markers, it is important to pair them...have a similarity index of 0.87; therefore, two overlapping cellular markers should not be paired with these...index of 0, which would be a better choice for overlapping markers. Compensation/reference control(s) Compensation... -
No Llamas Required - Synthetic Nanobodies Against Membrane Proteins
TypeBlog PostPublishedJune 18, 2020, 1:15 p.m....have gotten a lot of press for being a promising approach for treatment or prophylaxis of COVID-19. Researchers...nanobodies that bind to coronavirus spike proteins (Wrapp et al., 2020), which sit on the surface of coronaviruses...BioRxiv. https://doi.org/10.1101/2020.04.16.045419. Wrapp D, De Vlieger D, Corbett KS, Torres GM, Wang N, ...single domain antibodies for the conformational trapping of membrane proteins. eLife 7: . https://doi.org... -
Plasmids 101: Protein Expression
TypeBlog PostPublishedJune 7, 2018, 1:17 p.m.... experimental, biotechnological, and medical applications. Researches can visualize proteins in vivo by...protein you need Your plans for downstream applications In this blog post we will summarize some of...proteins as bacterial cells are not equipped to add appropriate post-translational modifications. In addition...acids that are useful in different downstream applications. Cell-free expression systems however, are expensive... -
Experimenting with New Careers while in Grad School
TypeBlog PostPublishedFeb. 25, 2016, 3:30 p.m....months, and we got one submission. I was a bit disappointed in the lack of participation, but I decided ... passed these dinosaurs every day. They made me happy. Grad school can provide plenty of negativity, so... so I volunteered at a place that made me happy. I started volunteering in the “Dinosphere” almost every...was worried about becoming one of those angry, disappointed graduate students because I wasn’t sure what... -
Great Results Start with Great Standard Curves
TypeBlog PostPublishedAug. 15, 2024, 1:15 p.m.... critical for a number of popular scientific applications, and the quality of a standard curve can make... then generate a trendline for the data. The appropriate trendline varies between assays and may be linear...for an acceptable R2 but for many scientific applications users aim for an R2 above 0.95. Additional... from decreased specificity, especially as it approaches the minimum and maximum thresholds. If the measurements... -
CRISPR 101: Making a Knock-In Cell Line
TypeBlog PostPublishedDec. 22, 2022, 2:15 p.m....cells stay in an HDR-promoted cycle longer. This approach may have some negative outcomes on viability if... as 10 hours, so read up on the timing of this approach carefully (Lin et al., eLife)! Use a Cas that...facilitates HR What if promoting HR was as simple as swapping out your Cas9? It can be! Cas12a is a Cas family...knock your knock-in experiment out of the park. Happy editing! Resources and References References... -
Introducing Addgene's New Search - Find Plasmids More Easily For Your Research!
TypeBlog PostPublishedDec. 3, 2019, 11:38 a.m....down to the exact plasmid you need. The ability to apply a wide range of filters isn’t new to Addgene’s plasmid... it’s also a convenient most requested filter. Applying a second filter, this one from the ‘Requests’ ...consider. If you get this far and realize you need to apply different filters you do not need to start a new...” plasmids returns more than 1300 results, and applying a filter for “CRISPR” plasmids keeps more than... -
New Optimized Genome-wide CRISPRko, CRISPRi, and CRISPRa Libraries
TypeBlog PostPublishedOct. 4, 2018, 12:44 p.m....activity. In this study scientists examined approximately 1,900 sgRNAs and identified sequence features...substantially identified more hits than the SAM library approach in a comparison study screening for vemurafenib...ORF overexpression library identified several overlapping genes, most genes were unique to the individual...Calabrese pooled library and lentiviral prep here! Applications for the Root and Doench CRISPR libraries Overall... -
INTEGRATE: Bacterial Genome Engineering Using CRISPR-Transposons
TypeBlog PostPublishedDec. 7, 2020, 2:53 p.m.... and have been adapted for a wide variety of applications - as mutagenesis tools for genetic studies (...Recently, the lab introduced a streamlined expression approach (Fig. 2A), involving two-plasmid or single-plasmid...at one or multiple desired genomic loci. Many applications of these systems have already been demonstrated...C , Xu M, Zhou Z, Smock DC, Tang K, Owens TK, Krishnappa N, Sachdeva R, Deutschbauer AM, Banfield JF, ... -
Minigenomes - a Safe Way to Study Dangerous Viruses Like the Ebola Virus
TypeBlog PostPublishedMarch 17, 2016, 2:30 p.m....is a nonsegmented, negative sense RNA strand approximately 19 kb in length. It contains short promoter ...replicated and transcribed in the cell when the appropriate viral proteins are provided in trans (see Other..., there are a few reasons arguing against this approach. First, this would prevent the study of the proteins...activity (4). To ensure that you end up with appropriate plasmid ratios, we suggest: 500 ng NP, 500 ng... -
Your Lentiviral Plasmid FAQs Answered
TypeBlog PostPublishedApril 23, 2014, 1:08 p.m....lentiviral plasmids created for a variety of applications including cDNA expression, shRNA-mediated knockdown...only infect dividing cells. When choosing the appropriate gene delivery system, the specific target cell...type or tissues; this is useful in gene therapy applications where a distinct subset of the cellular population...free to post them in the comments and we would be happy to answer them! Note: A. Max Juchheim, Marcy Patrick... -
Technical Design of a Western Blot
TypeBlog PostPublishedAug. 22, 2024, 1:15 p.m....it includes validation data relevant to your application — and double-check that lot number while you’...unstained set of standards that covers a size range appropriate for the target(s) and transfer method. Membranes..., make sure to choose a chemilumescence kit appropriately sensitive for the amount of protein you are ...reference table to help you quickly decide what approaches best suit your experimental needs. Table 3: Optimizing...Increased time; increased reagents Good luck and happy blotting! Many thanks to Addgenies Ashley Waldron... -
Viral Vectors 101: Preparing Pooled Libraries
TypeBlog PostPublishedJuly 13, 2023, 1:15 p.m..... Transfection of the DNA pooled library and appropriate packaging and envelope plasmids into HEK cells...next step is to make your virus. If the library happens to have a specific protocol for producing virus...protocol on Lentivirus Production provides a general approach for producing lentivirus in Lenti-X 293T cells...don’t hesitate to email us at [email protected]. Happy screening! This blog was written by Addgenie Hannah... -
Mesothelioma - Causes, Symptoms, and Treatment
TypeBlog PostPublishedDec. 13, 2016, 3:30 p.m....a danger of getting the disease, even if you do happen to be exposed to asbestos. However, as the U.S....techniques are used as part of a treatment plan, an approach known as multimodal therapy. Sadly, in many cases...the abdominal cavity. This targeted chemotherapy approach has been shown to be successful in killing many...as in the case of Paul Zygielbaum. A different approach to immunotherapy is bevacizumab (Avastin). This... -
Using Video to Share Your Science: We Share Science
TypeBlog PostPublishedNov. 3, 2016, 2:30 p.m....for millions and their visual format is quite appealing to many audiences. While all of these platforms...ever since. The take home message of all of this appears to be that video is the future in terms of communicating...these platforms (such as social networking, visual appeal, instant sharing across multiple other sites), ...private sector researchers, or pretty much anyone applying the scientific method to a question. Videos from... -
Binning Singletons: Tackling Conference Networking When You Don’t Know Anyone
TypeBlog PostPublishedFeb. 18, 2020, 2:15 p.m....keep DNA sequencing singletons (reads that only appear once) in our analysis. Many pipelines toss these...not the more intense mentorship experience that happened at ASM Microbe, we connected people who otherwise...networking and mentoring circles We looked at a lot of approaches scientific meetings have taken to provide mentoring...Shawnna Buttery, Kat Milligan-Myhre, and Pragati Chengappa. Financial and moral supporters Denise Akob, ...