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...these tools can be to use. AAVs, which can target different cell types depending on their serotype, are particularly...93,491 viral vector preps with researchers in 45 different countries — and as of 2024, we’ve distributed ...the vectors in Addgene’s catalog are offered in different serotypes. In fact, the 879 viral vectors in our... CRISPR, where we dove fairly deeply into the different types of tools scientists were using/depositing... is less amenable to such analysis, due to its inherent bias: Addgene uses a prioritization process to...service. But why are their request patterns so different? It could be a matter of timing, as jGCaMP7 was...from requestors and depositors, and identifying trends in our own repository data, giving us significant...

... new prime editors, PE6a–g, that overcome some current prime limitations and enable impressive editing...optimized for dual-AAV systems. These variants use different RT enzymes and performed large edits with similar...similar or better efficiency than PEmax, the current state-of-the-art. PE6b was very efficient for short...types. DIRECTED is compatible with fusogens from different viral families and can be used to target multiple... enzymes, TurboID and APEX2, are localized to different cellular compartments. They showed APEX2 can use...uses sequential labeling by TurboID and APEX2 at different cellular locations. C) Enrichment of dual-labeled...stably or inducibly express tagged iPAK4 from different promoters, specific time points appear as fluorescent...

...Addgene blog Plasmid Preps: Different Purity, Different Quantities, Different Uses Plasmids 101: Optimizing...quantity.   Figure 1: Plasmid preps fall into different categories based on their relative qualities and... and quantities. Image created in BioRender.com. Transformation Grade DNA (low quality/low quantity...fairly self explanatory and achieved by performing different sized preps, such as miniprep, midiprep, etc. ...what do we mean by DNA quality? There are a few different issues that can arise during the plasmid purification...left with pure plasmid DNA. Image created in BioRender.com. For the clean-up stage, plasmid purification...applications, the choice is largely a matter of preference.   Which size kit to use?  Obtaining higher quantities...

... science) they come from many different places supporting many different positions. It would be detrimental...cycle begins again. No part of this process is inherently political so why is there a march in Washington... (scientists who hold a doctorate degree, are currently working full-time, and have received a research... and everyone is welcome. Why? There are many different things scientists and non-scientists alike are...not necessarily marching for every cause. The references provided also only provide a snapshot into the...microbial interactions, and science education.       References March for Science Website Locke, John, and Peter...Cambridge university press, 1988. AAS: Historical Trends in Federal R&D NJ.com: Rush Holt: Lawmakers need...

...by Addgenie Rebecca Hutcheson.   References and resources References Banasik, M. B., & McCray, P. B., ...integrase-deficient viral vector. Created with BioRender.com. What are integrase-deficient lentiviral...then, numerous variants have been developed with different mechanisms to inactivate the integrase.  The IDLV...of non-integrating transgenes. Created with BioRender.com; adapted from Banasik and McCray, 2010. ...vectors is random, and the integration site will be different for each transduced cell, there’s no telling which...to valine at position 64) which is sufficient to render the integrase non-functional without affecting ... that of regular lentiviral vectors. The only difference is that you would use the integrase-deficient...

...deposits to Addgene.  Insomuch as different journals represent different research areas, target readers,... this story had us wondering: is there a larger trend here? Do papers associated with Addgene deposits... would also be great to know how much of that difference in citations is caused by depositing a plasmid...wouldn’t be causal. To control for a number of differences between those papers with Addgene plasmids and..., so our estimates now take into account any differences in citations due to the journal of publication... the same journals! So, is all this remaining difference caused by depositing the related plasmids with...it is still suggestive that we see such a big difference in citations after controlling for journal. And...

...  7 ways to strengthen your new relationships Here are some ways to go about strengthening a new relationship...events for one organization or go to the same conferences/meetings over and over to get to know the regulars...often the easiest way to build relationships and strengthen them over time.  Things to avoid when following...starfish shape. You can ask me about the different arms of this starfish sometime, but as of yesterday... was only one other person in my class who had children. When I had my baby, we became closer. She supported...really understood what I was going through. (Parenthetically, when I called the lab to ask my benchmate ...come across your contacts over the years in many different ways. This leads me to my last tip: It’s usually...

...plasmid cloning, and viruses. References Baltrus, David A., and Karen Guillemin. "Multiple phases of ...unique to the lab. Let’s take a look at these different methods of DNA insertion. Transformation Transformation...Various factors promote natural transformation in different bacteria such as growth phase of the cells (Baltrus...plasmid, the genes on the plasmid can give them different phenotypes. For example, this plasmid encodes ...cell. Once inside, phages can follow one of two different life cycles: lytic or lysogenic. Lytic phages ...a common tool used by scientists to introduce different DNA sequences of interest into a bacterial cell...through cell division. You can find all kinds of different lentiviral and AAV plasmids as well as ready-to-use...

... activate different G proteins, work in different neurons and neuroglia, and have different effects on...internalization of two different receptors- angiotensin II type 1 receptor and the β2 adrenoceptor. GPCRs in chemogenetics...Addgene’s chemogenetics guide.     References and resources References Kroeze WK, Sassano MF, Huang X-P,...These receptors can be activated by an array of different ligands, including hormones, neurotransmitters...is estimated that there are approximately 950 different human genes encoding GPCRs (Takeda et al., 2002...

...St Pierre is currently a graduate student at Northeastern School of Nursing and currently works as a registered...low-income communities to educate parents about resources that can help their children thrive academically. Rose...helps you find internships and scholarships in different subject areas!    2. Resume and cover letter...your relationships to the person as well as their current sphere of influence. In other words, the longer...the better, and their leadership status in their current field of expertise augments their authoritative... while you make the ultimate case: why you? 7. Strength in numbers Encourage your close peers to come ...C. St Pierre! Roodolph (Roo) P. St Pierre is currently a doctoral candidate in the Chemical Biology Program...

...international mentoring conference held at the University of Valencia (Spain). At this conference, mentors and mentees...international mentors. Universities from five different geographical locations in Spain were enrolled:...mentees held scheduled monthly progress video conferences and had real-time correspondence via e-mail throughout...Mentorship Program and the International Mentorship Conference In addition to a pre-program self-assessment ... exchanged impressions of the IMP experience. Conference highlights included remarks by the Spanish Secretary...community overseas. Official representatives from different Spanish universities and high level public and...their support and hope for the IMP program. The conference also honored IMP Mentors & Mentees with awards...

...NmCas9 and St1Cas9. Each ortholog was fused to a different fluorescent protein to create three distinct colors...orthologs is key: since each ortholog requires a different PAM sequence, a gRNA designed for one dCas9 should...specific for telomeric sequences and showed that different fluorescently labeled dCas9s are efficiently directed...target sequence. They succeeded in labeling two different pairs of chromosomes using gRNAs specific to sequences...specified by PAM sequence, each color requires a different Cas9 ortholog, and the target sequence must be... green, and red. In contrast, a gRNA with two different hairpins will produce a secondary color cyan, ...sequence (as noted in the table). gRNAs with two different hairpin sequences produce yellow, cyan, or magenta...

... words, they were leaving these meetings with different interpretations of what we discussed and decided...scientists learn how to communicate their work differently based on their audience. How you talk about your...at a poster is going to vary depending on the conference you’re attending and who approaches you. You ...with professionals from other backgrounds at conferences or networking events. And if you’re a wet lab...fellow team member. But, at Addgene, we use seven different types of “plates” (Fig. 1). When you have to tell...certainly wasn’t the only problematic word. How many different things do you simply refer to as a “tube”? We... they could in fact be interpreted in several different ways depending on the team. When Tony, our corporate...

...everyone at this specific conference, and I was able to include and exclude different modules for this workshop...something about it. Building a diverse team with different talents and expertise Fortunately, the eLife ambassadors...realized that holding the next one at a scientific conference could potentially enable reproducibility practices...it physically to instruct the workshop at the conference, but because each contributor made the materials...open and modular nature of the workshop content: different parts could be mixed and matched to serve a specific...working with communities, not for them - Another strength of this collaboration is that it is driven by ...the lookout for upcoming workshops at future conferences this year. Workshops are confirmed for the Evolution...

...24, 2025 by Alyssa Shepard.   References and Resources References Beumer, K. J., Trautman, J. K....Cong worked with Addgene Senior Scientist, Matt Ferenc, to organize the CRISPR forum's most popular questions...double nickase system is that you can express two different chimeric gRNAs with the Cas9 nickase which will... like the wildtype Cas9 does. There are a few references for the double nickase system, including one ...system probably have better specificity. A good reference is Ran et al. (2013). As for target selection...most guides would work, but they sometimes have different efficiency). And it is best if the cut site is...for one well in 24-well plate. A good example/reference is Ran et al. (2013). In the case where you ...

... Evaluating Gene function by RNA interference (RNAi) RNA interference (RNAi) is a powerful tool for performing...genes. Double-stranded RNA (dsRNA)-mediated RNA interference (RNAi) to knockdown expression of specific gene...morgani, and Phagocata gracillis. There are 11 different genes cloned into plasmids to investigate for ...WISH technique. The expression patterns of 11 different planarian genes (all of which are available through...phenotypes of RNAi knockdown treatment should be apparent after three dsRNA feedings. Some of the phenotypes...and if you make new plasmids for investigating different planarian genes, we encourage you to deposit them...researchers can easily investigate in planarians. References 1. Alice Accorsi, Monique M. Williams, Eric J...

...collaborate with specialists in different fields that can provide different insight into an area - not just...you are looking to move to a different university, perhaps in a different country, choose where you go...collaborators It’s a good idea to move around to different labs during your career; you learn new techniques...I hope to discover. This section may make the difference in whether you get funding or not; applications... grants too There are actually quite a lot of different pots of money available for researchers, so look...gained in writing small travel grants to attend conferences and a seed funding grant for a proof-of-principal...mechanisms of cell division. Recently Seán got the entrepreneurial bug and has set up an ELISA kit company on ...

...concentrating a viral stock. Different titering methods can reveal differences in physical versus functional...negatively-charged membranes (Davis et al., 2002). Polybrene is one such cationic reagent that is commonly ...efficiency by 10-fold (Davis et al., 2002). However, polybrene is highly sensitive to freeze-thaw cycles and ...be stored in single-use aliquots. Never use a polybrene solution that has been thawed more than once. ...in cells that are sensitive to the toxicity of polybrene (e.g., hematopoietic or primary cells), and has...packaging cells for infection If your transductions aren’t working, you can check if virus is being generated...up-to-date tips for your virus experiments. References 1. Anthony, Simon J., et al. "A strategy to estimate...

...) signal. While many studies focus on promoter strength as a determinant of gene expression levels, the...these will not be detailed here, but additional references are provided at the end.  Nearly all common bacterial..., and III), each responsible for transcribing different types of RNA: Polymerase I is responsible for ...that each eukaryotic RNA polymerase terminates differently. Polymerase III, for example, relies on a specific...Rho-independent termination found in prokaryotes. This is different than Polymerases I and II, which both require ...factor dependent, Polymerases I and II employ different mechanisms to terminate transcription. Polymerase...and/or use weaker poly(A) signals like BGH.  References Peters JM, Vangeloff AD, Landick R. Bacterial...

...you can quickly test that part in different contexts and plug different characterized parts into a TU! What...works on genetic code expansion.  References and Resources References Weber E, Engler C, Gruetzner R, Werner... then chances are you have been in the cloning trenches yourself. Modular cloning, or MoClo, is a systematic...be assembled into many combinations. Even with current technologies, it can be extremely hard to predict...nature of MoClo allows users to test a variety of different orientations and components within the system ... a great tool to deliver many combinations of different candidate genes at once to identify the best cocktail...and gene editing that use MoClo, for which many different MoClo kits have already been established. Keep...