We narrowed to 840 results for: Met

...Shcherbakova and Verkhusha (Nat Methods. 2013 Aug; 10(8): 751-4. doi:10.1038/nmeth.2521) Far-red light photoactivatable...brain, say, or maybe a tumor. They wanted to find something better. Transparency window That’s exactly what...Biotechnology back in 2011 and then in another Nature Methods paper last year. The key to their bacterial phytochome-derived... which absorb the majority of light below 650 nanometers (nm), and the absorbance of water, which absorbs... we can’t localize one cell at a depth of one centimeter with fluorescence is because the light becomes...higher resolution images at depths up to eight millimeters – not single cells (yet) but small clusters of...these probes, he says, when in doubt, read the methods sections of the relevant papers, and then read ...

.../Cas9 based method to tag endogenous proteins in HCT116 cells with mAID. Using this method, the lab was...marine microorganisms based on metagenomic data. MerMAIDs (Metagenomically discovered Marine, Anion-conducting...tagging toolkit at Addgene Yesbolatova et al., Methods, 2019. PubMed PMID: 31026591. Expanding the targeting...their analysis of different publicly available metagenomic data including the Tara Oceans Project datasets...combining the analysis of publicly available metagenomic datasets with biophysical studies and the potential...Find the LADL plasmids at Addgene Kim et al., Nat Methods. 2019, PubMed PMID: 31235883. ...

...showing that this transfer increases the metabolic and metastatic capacity of cancer cells. This is certainly...Biotinylated proteins were isolated, identified by mass spectrometry, and classified by source cell based on single-cell...Nerve-to-cancer transfer of mitochondria during cancer metastasis. Nature, 644 252–262. https://doi.org/10.1038...widefield imaging, two-photon microscopy, and fiber photometry. Plus, both designs offer promising templates... a way to make adipocytes fight cancer. In this method, called adipose manipulation transplantation (AMT...of fat tissue that is able to waste energy by metabolizing glucose to dissipate heat. Of the genes they...specialized equipment (Collins & Lau et al., 2024). The method uses CRISPR interference (CRISPRi) to regulate ...

... has remained a challenge. Enter Easi-CRISPR: a method that harnesses the power of ssDNA donor molecules...60%. This is much more favorable than previous methods yielding 1-10% knock-in. Read on to learn how you...DNA, but Miura et al. (2015) developed the ivTRT method to ameliorate this problem. Briefly, you design...with standard microinjection and electroporation methods using in mouse transgenics. Designing an Easi-CRISPR... the insertion site. If you are using the ivTRT method, try to make the first two bases of the left homology...terminal)   Easi-CRISPR efficiency and delivery methods Using RNP delivery and microinjection, the efficiency...have also recently developed i-GONAD as a simple method for delivery of genome editing components to the...

...restriction digests on plasmids at Addgene, we sometimes observe something odd in our uncut DNA control: a band ...performing a diagnostic digest is a simple but effective method for detecting plasmid multimers. Digests themselves...please note that the supercoiled dimer band can sometimes overlap with the band corresponding to the nicked...after visualizing it on a gel, one of the other methods below should help in multimer identification. ...Screen multiple colonies to isolate the monomer Sometimes a plasmid can exist in a bacterial population ... bacterial colonies using one of the detection methods described above can help ensure the isolation of... and catenanes by agarose gel electrophoresis. Methods Mol Biol. 2009;582:11-25. doi: 10.1007/978-1-60761...

...capture method such as Protein A/G beads to collect your antibody-bound samples. With a bead method, you’...isolated and studied through a variety of downstream methods, such as qPCR or next-gen sequencing. ChIP is an...cutting. While sonication is usually the preferred method, enzymatic digestion can be appropriate when your...your fragmented, crosslinked chromatin.  Whichever method you choose, you’ll need to reserve a small aliquot...DNA is now ready for downstream analysis via any methods suitable for isolated and purified DNA, such as...  Where’s the challenge in that?  So while this method is certainly long and complex, you may be thinking... be a good idea to add "patience and an extra-methodical approach" to the top of your protocols when embarking...

...research can be difficult to replicate. Unclear methods Until someone attempts to replicate the results...may be impossible to determine precisely how the methods were implemented. We run into this problem frequently...Reproducibility Project: Cancer Biology, where reported methods may not include how many tests were conducted on...focuses more attention on the results instead of the methods. Unreported flexibility and questionable research....  If we eliminate the problems above: unclear methods, QRPs, and small samples, then when replications...make research more reproducible? Combat unclear methods with open data, materials, and code Only when you...questions are important enough to be answered and the methods are appropriate to answer those questions, the ...

...like fluorescence microscopy, flow cytometry, or spectrophotometry. The range of fluorophores available...2007; Stoeckius, et al., 2017). Metal isotopes are useful for mass cytometry (Bendall, et al., 2012). And...measurement in single cells. Nat Methods 14:865–868. https://doi.org/10.1038/nmeth.4380  Additional resources...antibodies for your experiments.  Many of the methods for antibody conjugation can be quite variable ...Chattopadhyay PK (2012) A deep profiler’s guide to cytometry. Trends Immunol 33:323–332. https://doi.org/10.1016...

... about prior methods for studying autophagy and how Rosella improves upon them. Methods for studying ...Electron microscopy is a traditional method for studying autophagy. This method relies on the identification ...with or without an autophagy inhibitor. While this method does provide a quantitative measure of autophagy...Mizushima, N., Yoshimori, T., & Levine, B. (2010). Methods in Mammalian Autophagy Research. Cell,140(3), 313... D. J., Cuervo, A. M., & Seglen, P. O. (2007). Methods for Monitoring Autophagy from Yeast to Human. Autophagy...Quantitative Pho8Δ60 Assay of Nonspecific Autophagy. Methods in Enzymology Autophagy: Lower Eukaryotes and Non-Mammalian...

...delivery is achieved through the use of invasive methods, limiting researchers to accessible, spatially ...The AAV (a) capsid, (b) cargo, and (c) delivery method determine cell type- or region-specific transgene...used for expression control. (c) Viral delivery methods include focused ultrasound (FUS), intracorporeal...expression, it may be better to choose a direct delivery method over systemic delivery. Otherwise, cell-specific...immunogenicity is a concern, using a purification method that removes, not just reduces, empty viral capsids...to use. Factors to consider include the delivery method, mouse strain, target cell type or tissue of interest.... It was engineered, via the M-CREATE selection method, to cross the BBB through interactions with LY6C1...

...added to the wells. This reaction produces a colorimetric reaction that reflects the concentration of ... concentration or antibody specificity via a colorimetric reaction. Image from Boguszewska et al., 2019... concentration or antibody specificity via a colorimetric reaction. Image from Boguszewska et al., 2019...added and the reaction can be visualized via a colorimetric reaction. The direct ELISA is often used when...concentration of proteins in an ELISA well is based on a colorimetric reaction. Most commonly, this is a blue reaction...

...Calcium is arguably one of the most important metal ions in biology (sodium and potassium are up there...developed calcium sensors to better understand how this metal ion is trafficked and regulated. In this blog we...experiment with a sensor that is tuned to your parameters.   Kinetics How fast is the process you would...used calcium reporters with different kinetic parameters. There are three GCaMP types based on their kinetics...available with improved kinetic and sensitivity parameters. Sensitivity and Localization The calcium concentrations...green, blue, red, and far-red. There is also a ratiometric GECO sensor (GEX), where one wavelength changes...mApple (jRGECO1a) are also available. Detection methods Many calcium reporters use a single fluorescent...

...the transfection method (i.e. polyethyleneimine, calcium phosphate or liposomal methods), the volume of...lentivirus can be concentrated by a variety of methods such as ultracentrifugation, centrifugation on ...polyethylene glycol (PEG) precipitation. All of these methods ultimately isolate the viral particles allowing...contamination. Finally, choice of concentration method depends of a variety of factors such as resources...applications. For example, while the PEG precipitation method is relatively inexpensive and does not require ...lentivirus; consequently, this may not be the best method when pure virus is required downstream. When assessing... PMID: 11589831. Jiang W. et. al.. An optimized method for high-titer lentivirus preparations without ...

...presence of trimethoprim, cultures treated with a folA gRNA were more sensitive to trimethoprim when compared...two advantages over existing bacterial CRISPRi methods. First, its modular design allows for customization...Peters et al., 2019 with permission.   Two methods to introduce Mobile-CRISPRi by bacterial conjugation... which encodes the target for the antibiotic trimethoprim. When Enterobacter aerogenes, Klebsiella pneumoniae... the folA gene product not been a target for trimethoprim, there would be no changes in sensitivity. Pooled...bacterial cloning and expression system." Nature methods 2.6 (2005): 443. PubMed PMID: 15908923. Johnson... on the Addgene blog Learn about other CRISPR methods for bacterial genome engineering   Learn about ...

.... No, we’re not all BFFs. Yes, sometimes teams disagree. Yes, sometimes work is a bummer when you’d rather... is a higher likelihood that something will go awry. Don’t plan something that will involve a huge group...the carrot (or more popularly- cookies). 3. Do something outside of your ordinary environment Team building...organizing the fun” sounds a little neurotic, but hey- sometimes fun needs to be had in an orderly and timely fashion...Communicate Make sure people know that there is something fun happening! Addgene actually has chimes outside...of our break room. A ring of the chimes means something fun is going on and to get there fast! Spread ...

...model for reprogramming somatic cells. A common method for generating iPSCs to express the transcription...diminished KLF4 expression levels; this altered stoichiometry impacted reprogramming and global gene expression...and CaMKII and RhoA sensors. Laviv, et al. Nat Methods. 2016. PubMed PMID: 27798609 Listen to our mCyRFP1...constructs with Addgene. Bindels DS, et al. Nat. Methods. 2017. PubMed PMID: 27869816 Listen to our mScarlet...PhoCl plasmids at Addgene. Zhang W, et al. Nature Methods. 2017. PubMed PMID: 28288123 Listen to Our Podcast...depositor Yannick Doyon’s lab has developed a new method to increase CRISPR editing efficiency in mammalian...cells. Their marker-free coselection, analogous to methods previously used in C. elegans, targets the sodium...

...somatic cells via various methods. Some of the more common delivery methods include retrovirus [2], lentivirus...transfection [9]. Many of the plasmids used for these methods can be found on Addgene’s stem cell page. On this...page, you can also find a table with a list of methods and the species they were used in. iPSCs have now...iPSCs into the cell type of choice. This step is sometimes also referred to as “directed differentiation....original somatic cells [41]. The in vivo and in vitro methods are similar except that the vectors carrying the...defined generation of human cardiomyocytes. Nat Methods, 2014. 11(8): p. 855-60. PubMed PMID: 24930130....pluripotent stem cells into a keratinocyte lineage. Methods Mol Biol, 2014. 1195: p. 1-12. PubMed PMID: 24510784...

...neuronal population prior to behavioral testing. One method to determine this is to examine expression of the... help to refine and optimize your stimulation parameters as well. Inhibition of neuronal activation is... other unwanted phenomenon or it could reveal something fascinating. Behavior is based primarily on careful...watch what happens. Who knows, you may observe something that could move your project onto the exciting—and...to the target neurons, appropriate stimulation parameters, etc.) The easiest way to resolve these issues...would be willing to teach you. An essential, yet sometimes overlooked, aspect of scientific research is that...comparative analysis of microbial opsins." Nature methods 9.2 (2012): 159-172.5. Goshen I, et al. Dynamics...

...high-throughput multiparameter screen (Koveal et al. 2022). Lactate is a key metabolite in glycolysis, ...of year approaching. We’re always looking for something to brighten our day, whether it’s memories of ...extracellular oxytocin dynamics in the brain. Nat Methods. 2022 Sep 22. pii: 10.1038/s41592-022-01597-x. ...screen to select variants based on performance metrics specifically for two-photon microscopy. The resulting...valuable tool to study cellular physiology and metabolism under various conditions. LiLac has improved ... here!   Koveal D, et al. A high-throughput multiparameter screen for accelerated development and optimization...Temperature Imaging with a Genetically Encoded Nanothermometer. Nano Lett. 2022 Jul 27;22(14):5698-5707. doi...

... multiple of three will do. A popular screening method for knockouts is Tracking of Indels by Decomposition...generating a knock-in mutation, the best screening method depends on what your desired edit is. Large knock-ins...knock-ins Are you introducing a large insertion, something 20 base pairs or bigger? Then screening by PCR...indicating targeted edits.   Interested in this method, but your edit doesn’t affect any endogenous restriction...be a marker for edited cells. As with all other methods, you’ll need to further validate the specific mutations...using sequencing confirmation. All knock-ins A method applicable to knock-ins both large and small is... sequencing trace file from the donor DNA. This method can precisely estimate editing frequency in a bulk...