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...Table 2: Effect of Localization on Rosella’s fluorescence emission. Localization pH Emission Color ...improves upon them. Methods for studying autophagy Biochemical assays Long-lived protein degradation: This... Pho8Δ60 mutant protein is expressed. Pho8Δ60 localizes to the cytosol in an inactive form unless autophagy...’s slow and only measures bulk autophagy. Morphological assays Electron microscopy: Electron microscopy... tagging it with GFP allows for tracking the localization or accumulation of pre-autophagosomal structures...will emit red fluorescence regardless of its localization in the cell. SEP’s pH sensitivity means Rosella...color fluorescence Rosella emits based on its localization. Table 1: Summary of Rosella’s excitation and...

...through our lab using barcoded tubes and plates. The critical pieces of information for a given plasmid are ...plasmid sequence. Other information may also be critical to the maintenance and use of certain plasmids...for the process. Always sequence verify Once the physical sample and its associated information are at Addgene... but, in most cases at Addgene, we check what we call the “insert,” (the gene or genetic element cloned...recover around 750 bp of clean sequence from a typical reaction, or about 250 amino acids worth, so make...comparable success rates and sequence quality, which is critical for the efficient handling of large numbers of...glycerol stock to each of 2 96-well microplates (identical copies, see image above). We then select forward...

...Research at universities typically requires funding from a variety of government and academic institutions...to trusted students. For example, if the proposal call aligns with your work, your advisor may want to ...actively pursue. Proposal writing: Improves technical writing and communication skills, Elucidates...required for a successful grant application. It typically includes overview information, key dates, funding...proposal and deliverables to the aims requested in the call. Step 2: Develop a research plan Most grant applications...delivers strength to the sentence. Below are the typical sections in a NIH RFA, for example, and tips to...met in order to deem your proposal successful. Typical proposals consist of 3 to 5 aims, with secondary...

...many have called out antibodies as major culprits in the reproducibility crisis of biomedical research ...why validation is so important. Antibodies are a critical component of the researcher toolkit due to their...other strategies may not be feasible and (2) large-scale proteomic and transcriptomic datasets already exist...-out approach to show that an antibody binds specifically to the expected protein. Common approaches include...that you want to use to look at the subcellular localization of a protein of interest. Conveniently, you ...plasmid not encoding this protein, which we will call Negative Control Gene (NCG) (A). Then you lyse the...experiment and want to validate that your antibody is specifically capturing your RNA-binding protein of interest...

...follow the same general cyclical process (Figure 2). The differences typically come in when generating...student at Moffitt Cancer Center. Engineering usually calls to mind building things, lots of math, and maybe...machinery. But not all engineering is at a large scale — some is done on much smaller equipment on a lab...conducting antibody evolution experiments, you’ll typically go through this cycle many times, until you achieve...chop up your target sequences into fragments, typically using a DNase. Then you run a PCR without primers...Innovation (IPI) provides information on their large-scale recombinant antibody production platform. IPI is..., validated antibodies with verifiable data is critical, especially when sharing with other scientists...

...most Enterobacteriaceae. An update to this system, called pEcCas/pEcgRNA, allows it to be used in more E.... CRISPR-transposons. The Sternberg lab's system called INTEGRATE (Insertion of Transposable Elements by...-Assisted Targeting) and the Zhang lab's system called CAST (CRISPR-associated Transposase) both enable...eukaryotes (Qi et al., 2013). As in other systems, catalytically dead (dCas9) targeted to a promoter or gene ...gene body can repress transcription by physically blocking the elongation complex from binding the DNA or...responsive promoter to drive expression of a catalytically dead Cas9 enzyme allows reversible repression...Bikard et al., 2013). By targeting either a catalytically dead Cas9 (dCas9) alone or a dCas9 fused to ...

...Almost all patients have achieved persistent immunological reconstitution with a normally functioning T...translating gene therapies from conceptual design to clinical trials involve identifying a therapeutic gene,...carcinogenic profiles have limited their usability in clinical settings. On the other hand, vectors derived from...Unlike most naturally occurring viruses used in clinical trials, wild type AAV is not associated with any...http://www.abedia.com/wiley/vectors.php). These clinical trials have been directed at diseases including...HIV. A notable landmark study showed significant clinical efficacy against a form of blindness known as ...rAAV2 carrying the human gene RPE65, patients with clinical diagnosis of LCA and mutations in RPE65 (n=3),...

...classrooms, the laboratory experience is focused on classical embryology techniques such as basic observation... They also created an online companion resource called “cutting class” which provides more detailed materials...technique that detects the temporal and spatial localization of mRNA transcripts in tissue. This is useful... manipulation. The technique involves using synthetically made RNA (riboprobes) with modified nucleotides... added to the tissue. The last step involves a chemical reaction to stain the cells that contain this ...easily generate off of a circular plasmid via PCR. Typically, to make these constructs, developmental biologists...target mRNA and silences its expression. More specifically, during the process of RNAi, an enzyme dubbed...

...they perform complex biological tasks, both of which are factors in the technical challenges they can ...hail Marys that have helped me troubleshoot some technical obstacles when working with virus: 1. Viral vectors...Different titering methods can reveal differences in physical versus functional titer. If you have low titers...cells, replace the medium with half the volume typically used (e.g., use 5 mL medium on a 10 cm plate)....increase transduction efficiency. These reagents typically enhance the adsorption of a virus particle to ...measured with branched-DNA technology." Journal of clinical microbiology 37.6 (1999): 1683-1686. PubMed PMID... virus adsorption on target cell membranes." Biophysical chemistry 97.2 (2002): 159-172. PubMed PMID: ...

...cable is threaded through—and fixed to—an optical insulator called a ferrule (below). The fiber optic cable...maintained during the entire protocol, otherwise optical stimulation will be erratic, opsin activation/inactivation...stimulation parameters must also be determined empirically but it’s best to try those that have already ...flexibility in behavioral experiments. However, the technical demands of using these wireless devices are significantly... in cerebellar Purkinje cells. The Journal of biological chemistry. 2011;286(29):25848-58. doi: 10.1074... Sparta DR, et al. Construction of implantable optical fibers for long-term optogenetic manipulation of...PMC3466483. 4. Kim TI, et al. Injectable, cellular-scale optoelectronics with applications for wireless optogenetics...

...to your normal control - you can set up your calculations so that your assay output number (RQ value) ... In that case, an RQ value of one (or, more realistically, between 0.80-1.20) would mean you have one ... on and so forth. This also serves as a light technical control - an RQ value of 1.5 means you have either...incredible discovery. The range of RQ values used to call copy numbers should be as small as reasonably possible...all double-stranded DNA, while Taqman uses an intercalating dye, with a fluorescent probe and quencher to...). Sybr, therefore, cannot be used to accurately call copy numbers, though it has been shown to identify...all researchers. Accuracy needed Do you need to call exact copy numbers or just general trends? How confident...

...must make is which system you will use, or more specifically, the type of cells that will be used to make...spanning both prokaryotic and eukaryotic organisms. Typically, what system is used is dictated by the specific... one passage (transfection). This differs from typical insect cell preparations, which we talk about below... below. Processing The viral supernatant is typically collected over the course of a couple days to increase...supernatant will depend on the virus type. AAV is typically purified using methods like ultracentrifugation...produce baculovirus, a family of viruses that specifically infect insects. This is what makes insect cells...transfer plasmid and the baculovirus construct, called a bacmid. Like AAV and lentiviral packaging plasmids...

...smaller libraries, chemical transformations can also be used. Efficiency for chemical transformations is...expected transformation efficiency, or more specifically calculated based on the size of and weight of your...that of electroporation, but an advantage is that chemical transformations are generally cheaper and easier...easier. One library that Addgene distributes with a chemical transformation amplification protocol is the Chong... KB) Screening Rinehart Lab Iterative Synthetically Phosphorylated Isomers (iSPI) Libraries ~11,000...DOCX, 17 KB)   For CRISPR libraries, Genome-scale CRISPR-Cas9 knockout and transcriptional activation...

...Kusumika (Kushi) Mukherjee, editor of Trends in Pharmacological Sciences, a Cell Press reviews journal. Stem...differentiate into cells of peripheral blood. Typically, there is a very small number of ASCs in each ...Limited. Only specific cell types can be produced Ethical concern High. Embryos are destroyed during ESC ...of post-transplantation rejection when used therapeutically High Low (if ASCs are isolated from the patient...bypass the transplantation compatibility issues and ethical concerns of ESCs. As iPSCs can be sourced directly...directly from a patient’s adult cells when used therapeutically, the chances of post-transplantation rejection...Kushi) Mukherjee is the Editor of Trends in Pharmacological Sciences, a Cell Press reviews journal. She...

...graduate student culminated in my founding a nonprofit called Central Indiana Science Outreach, or CINSO. We ...public. My experiences in grad school, though often called “nontraditional,” helped prepare me to start CINSO...educating the public and organizing events. I contacted local professional organizations and nonprofits. I volunteered...nontraditional” career path long ago. Use your analytical mind to test and discover what career suits you...mistake, I evaluated what lessons I had learned – call it “troubleshooting.” Trying out new experiments...followers. It’s also been a great place to reach out to local establishments such as museums, professional organizations...State Museum and others when I was trying to find local informal science educators, and ever since, the ...

...report the presence of chemical contaminants in their fields. The authors call these “sentinel plants....scientists’ favorite model organisms belong to a group called dicots — think Arabidopsis thaliana. However, many...including rice, wheat, and corn, belong to the genetically distinct group of monocots… and many genetic ...comes from an anthocyanin, an endogenous pigment typically produced as part of a stress response. The team... system would be best suited for detection of chemicals that readily diffuse through plant tissue. Those...Swyers, N., Morgan, A., Meerdink, S., Kuzio, C., Calderon, S., Sheng, H., Kenney, S., Zare, A., Gehan, M...

...Produce Chemically and Functionally Distinct Vectors. Molecular Therapy - Methods and Clinical Development...and community concerns AAV vectors are complex biological reagents; many factors, like storage buffers ...out of fear it points to flaws or gaps in their technical ability. But, especially for AAV data, that may...experimental settings. It is a curated set of technical reports on AAV vectors from Addgene and the CLOVER...Hub. These minimum data standards are designed specifically to allow scientists to evaluate how small changes...evaluate AAV vector performance. Yet, most of the technical data needed to replicate and build on others’ ...word of mouth” as their source for this type of technical know-how, which highlights the dearth of AAV vector...

...MCC develops and makes freely available technical and pedagogical resources, offers mentoring for instructors...best teachers and mentors pass on more than just technical knowledge, shaping their trainees’ very way of...their research capabilities and laboratory and critical thinking skills (Knutson et al., 2010a,b). Classroom-based...at other institutions to form a support network called the MDH CUREs Community (MCC) that seeks to reduce...student enthusiasm, and research backs up that view (Callahan et al., 2022).     Fig. 2: Students in...Chapter 17, Einstein Discovers America. New York./  Callahan, K., Peterson, C., et al. 2022. External collaboration...classroom-based undergraduate research experiences spanning chemical biology, biochemistry, and neurobiology. CBE Life...

...often scarce and difficult to identify. So what specifically should you do? What follows are just a few suggestions... in fact, some of the very things that were so critical to me landing my own position! Conferences One...Society for Cell Biology (ASCB) or the American Chemical Society (ACS) are just 2 examples of organizations...will sometimes result in a recruiter giving you a call. Many companies enlist the assistance of recruiters...appropriate job candidates. If you do receive such a call, make sure to get that person’s contact information... get the specific position he or she originally called about, you can keep in touch and reach back out...know all in one place! This information can be critical to a focused and effective job search. As with...

...have been used since the 1930’s in a range of biological studies, including investigations into environmental... are powerful resources for investigating any biological process. High quality genome sequence A high-... mutants In the 1990’s, two revolutionary large-scale random mutagenesis screens produced ~1,500 zebrafish...thousands of mutations in genes affecting diverse biological processes—not just development—are available ... zebrafish are short, modified oligonucleotides called morpholinos. When injected into zygotes, morpholinos...One common and robust strategy uses a transposon called Tol2 to randomly integrate foreign DNA into the...Naturally, the best model organism depends on the biological question, and zebrafish are not ideal for every...