We narrowed to 993 results for: Des
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TypeBlog Post...Green, Alexander A., et al. "Toehold switches: de-novo-designed regulators of gene expression." Cell 159.4...Specifically this includes primer directed isothermal RNA amplification, new toehold switch designs, CRISPR/Cas9...is an Assistant professor at the Biodesign Center for Molecular Design and Biomimetics and the School of...development of diagnostics. Mostly transmitted by Aedes mosquitoes (aegypti and albopictus) and, aided by... toehold switches, which allow for the rational design of RNA sensors that can detect virtually any RNA...areas conducive to the spread of the virus by the Aedes mosquito (Messina et al, 2016). We quickly assembled...spread out the risk for the project by initially designing and ordering several dozen versions of the toehold...
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Adenoviral Delivery of CRISPR/Cas9 Aims to Expand Genome Editing to Primary Cells
TypeBlog Post... JA, Han Y-C, Ogrodowski P, Crippa A, Rekhtman N, de Stanchina E, Lowe SW, Ventura A (2014) In vivo engineering...targeted organs or tissues with Cas9 and a gRNA designed to target a mutated gene. In a Scientific Reports...Center are now available at Addgene along with a description of their experimental protocol. The three plasmids...plasmid tools, find more plasmids, CRISPR technology guides, FAQs, and CRISPR resources on Addgene's CRISPR...Additional resources on the Addgene blog How to Design Your gRNA for CRISPR Genome Editing by John Doench... -
No Llamas Required - Synthetic Nanobodies Against Membrane Proteins
TypeBlog Post...https://doi.org/10.1101/2020.04.16.045419. Wrapp D, De Vlieger D, Corbett KS, Torres GM, Wang N, Van Breedam...Zimmermann et al., 2020). This selection platform was designed so that any standard lab can quickly select for...strongly to your target protein. The Seeger lab designed 3 different mRNA sybody libraries for use in the... randomized with a defined set of different trinucleotides (corresponding to different amino acids) in...for binding to the target protein. The protocol describes going through two rounds of phage display to increase...interest. The Seeger lab used the ELISA technique described in their protocol because it is less susceptible... -
AAV Vector Quality Control: Going the Extra Mile with NGS
TypeBlog Post.... When contamination is suspected, we proceed to de novo assembly of the unmapped reads, employing our...transduced cells whenever possible. This post will describe our workflow for viral genome sequencing (VGS)... -
Negative Can Be Positive: Open AAV Data with Addgene
TypeBlog Post...392–400. https://doi.org/10.1038/s41434-018-0028-5 de Backer, M. W. A., Brans, M. A. D., Luijendijk, M....of negative data. Negative AAV data is highly desirable In a survey we conducted to improve our Addgene...every researcher experiences and that it often provides incredibly valuable insight into one’s work. As... Hub is here to help! The Addgene Data Hub is designed to help scientists understand how our vectors ...standards (clear and detailed methods and image descriptions, a minimum n = 2, and well labeled high- and...the Data Hub. These minimum data standards are designed specifically to allow scientists to evaluate how... -
Tips for a 1st time AAV user (by a Rookie AAV user)
TypeBlog Post... Special thanks for Dr. Dan Stone and Harshana de Silva Feelixge at Fred Hutchinson Cancer Center for...plasmids to produce AAV: 1) the RepCap plasmid which provides the AAV replication (rep) and capsid (cap) genes...replication; and 3) the transfer plasmid which encodes a transgene of interest that’s packaged into the... -
What’s in Your Tube?: A Quick Guide to Measuring DNA by Spectrophotometry
TypeBlog Post.... Issue 15/10. March 2010. https://www.qiagen.com/de/~/media/1ea8aec3bfa24543a28fcaea25986514.ashx. Koetsier... -
Lentiviral Vector Uses and Overview
TypeBlog Post...to sickle cell disease. Hoban MD, Orkin SH, Bauer DE. Blood. 2016 Feb 18;127(7):839-48. PubMed PMID: 26758916... but without sustained transgene expression. To design a viral vector system that could do both, Addgene...infect. Finally, the transfer plasmid encoded the desired transgene flanked by HIV-1 long terminal repeats... knockout cell lines. Many CRISPR plasmids are designed for lentiviral use, including Addgene’s top requested... check out our lentiviral plasmid and biosafety guides before beginning your experiment. Let us know how... -
CRISPR Plasmids - Empty gRNA Vectors
TypeCollection...none S. pyogenes de Bono sgRNA with rpr-1 promoter 48961 Worm EcoRI none S. pyogenes de Bono pMB60 47941...pyogenes LEU2 Lu pDestTol2CG2-U6:gRNA 63156 Zebrafish BseRI none S. pyogenes Zon pDestTol2pA2-U6:gRNA 63157...module vectors, including three designed for dicots and three designed for monocots. Using these gRNA ...Resources CRISPR Guide Viral Preps Protocols gRNA Design Tools CRISPR Blog Posts CRISPR requires that you...Cas9 (or other CRISPR) system that the vector was designed to be used with, such as S. pyogenes, S. aureus...encyclopedia of Class 2 CRISPR systems with wiki entries describing enzyme activity, experimental considerations,...from our collection. Plasmids Expression System Description PI Multiplex CRISPR/Cas9 Assembly System Kit ... -
Overcoming the AAV Size Limitation for CRISPR Delivery
TypeBlog Post...science.aaq0180 Fine EJ, Appleton CM, White DE, Brown MT, Deshmukh H, Kemp ML, Bao G (2015) Trans-spliced ...as potent and specific? The two AAV strategies described above showed successful target modification, indicating...from Streptococcus thermophilus and a rationally-designed truncated Cas9. Unfortunately, certain drawbacks... approximately 1350 amino acids in size, which includes SpCas9, and shortern orthologs approximately 1000...Split inteins are a pair of naturally occuring polypeptides that, when at the ends of two proteins, mediates... proof-of-concept split intein SpCas9 which had modest editing rates in HEK-293T cells when compared to...capabilities of full-length SpCas9. This set of plasmids includes AAV-Cas9C-VPR for targeted gene activation. Split... -
An Introduction to Adenovirus
TypeBlog Post...adenoviral vector infected cells does not require de novo viral gene expression: Implications for gene...a physiological effect of SARS-CoV-2 toward destabilizing one’s natural immune response to Adenovirus ...viruses infecting humans (from seven species, designated as letters A–G) exist. The life cycle of AdVs...short-lived. It is worth noting that it is possible to design a vector that achieves persistent transgene expression... -
Harnessing TnpB for Genome Editing: A Compact and Versatile Tool for Your Research
TypeBlog Post... Voytas, D. F. (2019). Plant gene editing through de novo induction of meristems. Nature Biotechnology... Vectors The vectors pK-TnpB1 and pK-TnpB2 are designed for plant genome editing using TnpB. The main ...step-by-step guide for using a Dra2TnpB. Step 1: Design the 20-nt Guide Sequence Identify a TAM site (...plant-specific tools for predicting efficiency of guides are currently unavailable, you can use TEEP — a...schematic of pKb-TnpB1 and pKb-TnpB2, and guide design rules. Step 3: Vector Digestion Digest either... -
Thoughts on the Future of Research 2015 Boston Symposium
TypeBlog Post... out to me were: Decrease the Number of Postdocs De-incentivize going into PhD programs as the standard...environments. Slide from Paula Stephan’s Talk (All slides can be found here). Importantly, the panel offered... joining long programs if it is obvious that a desired career outcome is not easily achieved. Of note...clearly not equitable to that of other trainees despite the fact that the underrepresented individual is... -
Rett Syndrome
TypeCollection...in transcriptional repression, activity dependent de-repression, chromatin remodeling, gene activation...species (mouse or human) Mutation ID Plasmid Description Gene/Insert Mutations PI Return to top External...BrainSpan Atlas of the Developing Human Brain - includes developmental transcriptome information, prenatal... -
Viral Vectors 101: Integrase-Deficient Lentiviral Vectors
TypeBlog Post...Brugman, M. H., Pike-Overzet, K., Chatters, S. J., de Ridder, D., Gilmour, K. C., Adams, S., Thornhill,...been a staple in molecular biology for over three decades. Widely used across various research applications...and human papillomavirus (HPV), to name a few (Desfarges & Ciuffi, 2012). One family of viruses, retroviridae... an example. The lentiviral transfer plasmid encodes your insert of interest, flanked by long terminal...Specifically for our knowledge here, the Pol gene encodes three separate enzymes that are proteolytically...lentiviral particles. The envelope plasmid typically encodes the vesicular stomatitis virus G protein (VSV-G...the retroviral life cycle for a more detailed description). Since the integrated portion does not contain... -
An Integrin Antibody Toolkit from IPI
TypeBlog Post... 26 recombinant antibodies (rAbs) either produced de novo using yeast display technology or produced from...response, tissue repair, and kidney development. Despite their ubiquity and significance, these receptors...available through Addgene’s repository. The collection includes 26 unique antibodies that bind discrete subunits...and migration, initiating intracellular signal cascades, and allowing agile responses to mechanical forces... -
Plasmids 101: Biotinylation
TypeBlog Post...26224555. PubMed Central PMCID: PMC4884002. 10. Boer, E. de, Rodriguez, P., Bonte, E., Krijgsveld, J., Katsantoni...Northern blotting Cell surface labelling Attaching polypeptides to a substrate Flow cytometry/fluorescence-activated...your downstream application. Biotin labelled oligonucleotides can be used in a multitude of applications...commonly used this method to attach proteins or polypeptides to a solid substrate (Holden and Cremer, 2003... -
Building Global Connections with the International Mentorship Program USA-EUROPE
TypeBlog Post...University of Oviedo, the European University Miguel de Cervantes, the University of Navarra, and the University...together with the universities, a bright future. IMP provides matched one-on-one international mentorship, with...recommended, a mentor with international experience provides his/her mentees with a broader, first-hand vision... -
Four Ways to Package Transgenes That Exceed the Size Limit of Adeno-associated Virus
TypeBlog Post...doi.org/10.1002/emmm.201302948 Trapani I, Toriello E, de Simone S, Colella P, Iodice C, Polishchuk EV, Sommella...physical size of the genomes is still ~4.7kb. But despite this, larger functional transgene products were...HDR event can’t occur. Lastly, depending on its design, donor A may be capable of expressing a truncated... -
CRISPR 101: Epigenetics and Editing the Epigenome
TypeBlog Post...oncogenic silencing in vivo by programmable and targeted de novo DNA methylation in breast cancer. Oncogene 34...which uses light to regulate transcription, also includes light-regulated histone methyltransferases and...histone modifications. Like the TALE-LSD1 system described above, dCas9-LSD1 inactivates targeted enhancers...certainly not the only CRISPR-based technology designed to alter gene expression. Fusing dCas9 to a transcriptional...epigenetic modifiers? As with any experiment, your desired outcome will determine the tool that you should...