...Addgene. Klann TS, Black JB, Chellappan M, Safi A, Song L, Hilton IB, Crawford GE, Reddy TE, Gersbach CA...publication at Addgene. Maeder ML, Angstman JF, Richardson ME, Linder SJ, Cascio VM, Tsai SQ, Ho QH, Sander...Sander JD, Reyon D, Bernstein BE, Costello JF, Wilkinson MF, Joung JK (2013) Targeted DNA demethylation... this publication at Addgene. Mendenhall EM, Williamson KE, Reyon D, Zou JY, Ram O, Joung JK, Bernstein...

... appear within a range of wavelengths. For that reason, we speak of excitation and emission spectra. Both... happens due to a process called Fluorescence Resonance Energy Transfer (FRET).   Figure 1: Emission...fused to CD45, but is separately expressed. (The reason for having a separately expressed transduction ...difficult. I chose BV421 for the following two reasons: 1) The emission spectrum of BV421 is far enough...

...Single-chain variable fragment (ScFv) Figure 2: Comparison between the IgG antibody and scFv. Because...Variables (scFvs). Nanobodies Figure 3: Comparison of the Hcab and nanobody. Nanobodies are the...10.1016/j.ymeth.2017.01.009 Crivianu-Gaita V, Thompson M (2016) Aptamers, antibody scFv, and antibody...antibody Fab’ fragments: An overview and comparison of three of the most versatile biosensor biorecognition ...

... work, funding for science, and numerous other reasons. It is important to remember that we, scientists...Albany, NY, USA 42.6526°N 73.7562°W – Nicholas Thompson Over the last few years, there's been a disturbing...positive event that I hope happens again. Nicholas Thompson is a PhD Candidate studying Nuclear Science and...enforcement, and, although there was at least one person vocally protesting us, he was not threatening in...

...Many thanks to our guest blogger, Doug Richardson! Doug Richardson is the Director of the Harvard Center...This post was contributed by Doug Richardson, Director of the Harvard Center for Biological Imaging and... 2, 932-940 (2005). PubMed PMID: 16299478. 9. Richardson DS, Lichtman JW. Clarifying Tissue Clearing. ...

...for near-freezing temperatures, our first of the season snow flurries, dusting off the winter coats and... to #DeckTheLab with virus snowflakes from @CVRHutchinson #SciArt #STEAM #WinterWonderlab @Addgene Make...WFH space feel a little more festive this holiday season! It is that time of the year again: miniature ...

...Serotype Category Depositor  Notes pAAV_hSyn-SIO-stChrimsonR-EGFP-P2A-PdCO-miniWPRE AAV1, AAV5 Optogenetics...Biosensors Li New viral service pAAV-Ef1a-fDIO-ChrimsonR-tdTomato AAV9 Controls Jensen New serotype pAAV-CAG...resources!   This blog post was written by Rachel Leeson and Brian O'Neill.  More resources on the Addgene...

...vivo T cell Screens (FITS) approach (Milling and Markson et al., 2024), developed and deposited at Addgene.... Figure used with permission from Milling and Markson et al., 2024.   Proof of concept The FITS approach...cancer.   References and resources Milling, L. E., Markson, S. C., Tjokrosurjo, Q., Derosia, N. M., Streeter...

...PHP.eB Controls Wilson New viral vector pENN.AAV.EF1a.eGFP.WPRE.rBG AAV PHP.eB Controls Wilson New serotype... Rachel Leeson...

...note that these results could be biased for two reasons: 1) they are based on the US Occupational Employment...nonscientists, blur the line between professional and personal on Twitter. Or maybe scientist prefer to share...Tips: Online Social Networking for Scientists 5 Reasons to Use Reddit for Science Communication 10 Ways...

...description of the tasks I would be responsible for, in comparison to the other positions listed with a much less...flexibility was the ability to work either remotely or in person. This was useful to me as some days it was not ...their employees are feeling comfortable.     Lucie Wilson is a rising junior and bioengineering student at...

...Bioluminescence Resonance Energy Transfer (BRET). BRET is similar to Förster Resonance Energy Transfer...heterotrimeric G protein dissociation by bioluminescence resonance energy transfer 2, or BRET2. With binding of the...

...depolarization of R2 neurons using CsChrimson::tdTomato, an optogenetic tool (CsChrimson) attached to a fluorescent...Yang HH, Fisher YE, Wang IE, Ishida IG, Maimon G, Wilson RI, Clandinin TR (2019) SPARC: a method to genetically...

...mosaic virus Dr. Fiona Robertson, University of Zimbabwe, Zimbabwe Dr. Fiona Robertson (far left) is a Senior...potential for this drought tolerant plant, Dr. Robertson aims to make use of the CRISPR/Cas9 technology...

...scientific community, what other reasons do we like being a nonprofit? One big reason is that scientists and technology..., Eric, Gizela, Henry, Ina, Inna, Ishrat, Jane, Jason, Jessica, Joel, Jonathan, Justine, Karen, Kate, ...

...primers for In-Fusion Cloning Design primers for Gibson Assembly and NEB HiFi DNA Assembly  OligoAnalyzer...cloning methods, such as restriction enzyme cloning, Gibson assembly, or In-Fusion cloning.  NEB Ligation ...resources were added in September 2023 by Rachel Leeson.  Additional resources on the Addgene blog: ...

...matters! There are important societal reasons, self-interested reasons, and, given that science is largely...largely funded by tax-payers, there are reasons to feel obligated too, as experts on the subject brought out...

... mind from that session were words from Eric Hendrickson, loosely paraphrased in the tweet below. The... DNA for Enhanced CRISPR Genome Editing Chris Richardson and members of Jacob Corn’s lab describe how ...Yinan, Brian Ruis, Taylor Takasugi, and Eric A. Hendrickson. Genome Res 27(7) (2017):1099-1111. PubMed PMID...

...AAV9  pAAV-CamKIIa-ChrimsonR-mScarlet-KV2.1 124603  AAV9  pAAV-EF1a-DIO-ChrimsonR-mRuby2-KV2.1-WPRE-...affect DREADD trafficking and localization. The Sternson lab recently deposited PSAM AAV, which encode ...

...visualization tools using CRISPR In 2015, Thoru Pederson’s lab at the University of Massachusetts Medical...CRISPR-Sirius Recently, Hanhui Ma and the Thoru Pederson lab developed CRISPR-Sirius (Ma et al., 2018)....order to label two loci simultaneously, Ma and Pederson created another sgRNA containing the PP7 hairpin...

...science trainee will spend 4-7 years working for one person and with a group who all strive for a common big-picture...rotation, which reveals their working habits, personality, and gives them the opportunity to see if the...extreme openness” of the lab (i.e projects like the Personal Genome Project and open source software, hardware...

...Bradbury ARM, Trinklein ND, Thie H, Wilkinson IC, Tandon AK, Anderson S, Bladen CL, Jones B, Aldred SF, ...JoVE. https://doi.org/10.3791/54832  Lipman NS, Jackson LR, Trudel LJ, Weis-Garcia F (2005) Monoclonal ...

... Cpf1 for multiplex genome editing.  For a few reasons, Cpf1 is a simplified system for editing multiple...guide page for a review of Cas9.  For a brief comparison of Cpf1 vs. Cas9, see the table below. Table...expression vector.  See the graph in figure 2 for a comparison of editing frequency resulting from transfection...

... proto-oncogenes and disrupt their expression (Robinson, 1982). To add insult to injury, retroviruses ...immunogenicity low! References and Resources References Robinson HL. Retroviruses and cancer. Rev Infect Dis. 1982...Gene and Cell-Based Therapies in the New Era of Personalized Medicine. Genes Dis. 2017 Jun;4(2):43-63. DOI...

...error rate for long sequence knock-ins by: Lucie Wilson Le Cong’s lab has developed a method using dCas9...error rates overall ranged from 0.3% to 10%, in comparison to the 62-90% error rate seen with Cas9 editors...barcodes for live cell clonal multiplexing by: Rachel Leeson Multiplexed images in live cells remains a challenge...

... variations in DR sequences. Figure 2: comparison of Cas 9 vs. Cas 12a expression cassettes when...0600-6. The Penn State Protein Ladder  by: Rachel Leeson This simple, inexpensive plasmid-based ladder system...mammalian genome regulation and editing by: Rachel Leeson The large size of CRISPR-Cas effectors and fusion...

... the genome. Mendenhall and Richard Myers of HudsonAlpha (where Mendenhall is also an adjunct faculty ...the function of the protein. Myers: We’ve done comparisons of our new system versus standard ChIP-seq for... for transcription factors, but there are many reasons you might want a system like this. It’s actually...

... Renaud J-B, Sallmyr A, Ruis B, Oh S, Tomkinson AE, Hendrickson EA, Giovannangeli C, Jasin M, Brunet E...P, Burkhalter MD, Oh S, Qaqish BF, Moore DT, Hendrickson EA, Ramsden DA (2014) The fidelity of the ligation...

...want to cover during the year. Suggest that each person bring 3 topics and write them on a board to see... and meet regularly no matter what, even if one person can’t make it. One of the biggest group mentoring...meetings. Experiment with the process. Have each person write a Development Plan. Set concrete goals with...

... on what makes them that way. Is there a senior person whose career path you are interested in following.... Finding potential mentors is one of the many reasons to always be growing your network. If you don’t...need for your current position Understand your interpersonal challenges if they know some of the people you...

...decades to generate knock-out mice, but for various reasons it is not nearly as efficient in human stem cells...genetic background and do an apples-to-apples comparison of all those mutations. If you make induced pluripotent...backgrounds. It becomes more of an apples-to-oranges comparison. Addgene: Can you compare the TALEN kit to CRISPR...

...comparable experimental results. Using PiggyBac transposons, the Woltjen Lab compared different variants ...reprogramming discrepancies. The polycistronic piggyBac transposon vectors tested in this work are available at ...tool for use as a donor in FRET (fluorescence resonance energy transfer) and FLIM (Fluorescence Lifetime...1kb fragments are produced (see figure above). 3 Reasons The PSU Ladders Are Awesome Tools: They are comprised...

... Keown, a staff writer at the non-profit Fred Hutchinson Cancer Research Center. Susan Keown’s science...applied and I got it.” Science writing at Fred Hutchinson Cancer Research Center Work as a Science Writer...as you can to get your name on things.” Susan personally found this easier to do while still in school...

...Abrahrnsen L, Oesterlof B, Josephson S, Oestling M, Enfors SO, Persson I, Nilsson B and Uhlen M. Large-scale...

...ligase-mediated method, the more recently developed Gibson Assembly Cloning and Gateway® cloning technologies... toxic protein (CcdB) that acts as a DNA gyrase poison, locking up DNA gyrase with broken double stranded...killing by the F plasmid CcdB protein involves poisoning of DNA-topoisomerase II complexes.” J Mol Biol...

...spike protein, called HexoPro, was developed by Jason McLellan’s lab. This version of the spike protein... Lee AG, Liu Y, Chou C-W, Byrne PO, Hjorth CK, Johnson NV, Ludes-Meyers J, Nguyen AW, Park J, Wang N, ...Seaman MS, Schmidt AG, Chen B, Neuberg D, Bajic G, Harrison SC, Wesemann DR (2021) Memory B cell repertoire...

...Bradbury ARM, Trinklein ND, Thie H, Wilkinson IC, Tandon AK, Anderson S, Bladen CL, Jones B, Aldred SF, ...piece of music. It was tough to share or remix the songs, the CDs could get scratched over time, and it was...

... of tea, and you are more of an audio or visual person. Why don’t you record a podcast or put some effort...yourself as an educator for a short, animated TED-Ed lesson. 6) Network – Mingle with pros Where do you meet...Communication. In the US, UC Santa Cruz, MIT, UW Madison, and Boston University offer science communication...

...at chromosome 19q13.4 qtr. (AAVS1)). For these reasons, AAV is usually classified as a BSL-1 safety level...General viral handling safety   Containment and personal protection are key to lab safety and the same ...reduce the risk of an accident (the most common reason for lab accidents is not following safety protocols...

... both NeuroMab and the Allen Brain Atlas. The comparison with two atlases enables us to see the reproducibility...literature suggest, providing an expectation and comparison on the antibody signal’s location. If a distinct... discuss the results together, explaining our reasoning to determine if the antibody is negative (poor...

....34870.  Kaas GA, Zhong C, Eason DE, Ross DL, Vachhani RV, Ming G-L, King JR, Song H, Sweatt JD (2013) TET1...linked to disease has now become much like the 1980s song “Don’t Stop Believin’”; whenever you hear it (whether...

...to non-scientists and may make your perfectly reasonable paragraph unintelligible to a lay audience. ...HR on the judging panel. It’s important for this person to get a clear and concise explanation as to why...Writing Professional Facilitate Career Planning and Personal Development with an IDP Get Tips on Keeping Up...

...PMID: 14723844. 3. Atasoy D, Aponte Y, Su HH, and Sternson SM. 2008. A FLEX switch targets Channelrhodopsin...PubMed Central PMCID: PMC2593125. 4. Saunders A, Johnson CA, Sabatini BL. 2012. Novel recombinant adeno-...Wenbiao Chen Liquin Luo Massimo Scanziani Scott Sternson Roger Tsien Naoshige Uchida Ian Wickersham Hongkui...

...adolescence passed on a heritable trait to their grandsons that decreased their likelihood of death from ... Ong-Abdullah, Meilina, et al. "Loss of Karma transposon methylation underlies the mantled somaclonal .... 3. Kaati, Gunnar, Lars O. Bygren, and Soren Edvinsson. "Cardiovascular and diabetes mortality determined...

...recommend using a Tris-based lysis buffer and sonication.  The obtained virions from cells and supernatant....2020.120 Lock, M., Alvira, M. R., Chen, S.-J., & Wilson, J. M. (2014). Absolute determination of single-stranded...L. H., Xiao, R., Lock, M., Lin, J., Korn, M., & Wilson, J. M. (2010). Efficient serotype-dependent release...

...efficiency. Figure used with permission from the Mark Dawson lab Re-transformation of the SPLINTR Libraries ...recombined backbones that may replicate faster. For this reason, if your library has inserts of different sizes... Hannah Dotson...

...slightly if you know a bit more about the other person. If you have a poster or talk at the conference...there parts of your elevator pitch where the other person seemed confused, bored, or particularly excited...after. For one conference I went to, I made it a personal goal to ask one question each day (this may be...

...., Polali, S., Anderson, E. D., Bell, A. M., Tzouanas, C. N., Avants, B. W., & Robinson, J. T. (2019).....4124.  Kattnig, D. R., Evans, E. W., Déjean, V., Dodson, C. A., Wallace, M. I., Mackenzie, S. R., Timmel...

...is very tricky to use and fussy to optimize. One reason could be the instability of the supposedly alien...many may find this inconvenient. Another possible reason for the trickiness of NgAgo is the inability of... not snipping DNA, he tries random things (101 lessons on Spanish, C++, guitar, photography) and often...

...next thing. If I made a mistake, I evaluated what lessons I had learned – call it “troubleshooting.” Trying...I asked some colleagues to share valuable life lessons they have learned during their scientific training... them in a blog post on Born to Science: Life Lessons from Scientific Training More and more voices ...