Single-cell isolation allows genomic and transcriptomic analysis of one individual cell. It is also required to build a monoclonal cell line from rare cell isolation, that could be for example CRISPR-CAS9 gene edited cells. There are 3 popular methods: serial dilution, micro-manipulation and flow cytometry. None of these are easy or simple, and they often require expertise and experience. Fortunately, a new solution for everybody has come! It’s designed to isolate a single cell in a few seconds, and it’s (quite appropriately) called the Smart Aliquotor. [Read more…]
CRISPR-CAS9 is a powerful technology for gene editing. It allows targeted modifications into the genome of the cell lines, IPSCs and ESCs. Despite the principle being pretty simple, in practice its use requires some expertise, and it can even turn into a time consuming adventure… That’s why the best way to benefit from it is most certainly through affordable services.
RNAi offer >70% knock-down of the gene expression and thanks to CRISPR-CAS9 gene editing it is possible make a complete knock-out. The TUNR system comes to offer the possibility to have intermediates with high, medium and low reduction of the gene expression and with the same quality of targeting than the knock-out.
Many research labs would like to acquire and implement the CRISPR-Cas9 technology for their gene editing projects. Indeed, it’s a powerful system based on a simple principle: an endonuclease, the CAS9, is driven onto a target site by a short guide RNA. There are so many strategies with benefits and drawbacks that is quite challenging to figure how to start out. Newcomers may be pushed into necessarily becoming experts before finding an efficient way to success. But what if you could use a complete and simple kit to facilitate your projects?
Early diagnostic of cancers is crucial for patients and the success of their therapies. Finding a diagnostic index with high sensitivity at the early stage of cancers is a major concern. Invasive biopsies may be already too late and are certainly painful. Thus, the challenge is to find biomarkers from simple blood samples. Circulating microRNA are the best leads for such research. Let’s see why with a recent publication.
During the past decade, mass spectrometry, notably LC/MS, has become a major approach to identify and quantify proteins in patient samples. It includes analysis before treatments to find the proper biomarkers for cancers diagnostics, and monitoring of the arising of the anti-drug antibodies in human plasma after therapies. Despite the fact that MS has pretty high sensitivity and specificity, research in biotherapeutics requires even more. Immunocapture, and so specific protein enrichment, offer an interesting immunoassay solution. Here, we present simple to use and efficient reagents to improve the immunocapture and thus the output of the MS technology. [Read more…]
Protein purification from cells or supernatants, endogenous proteins complex analysis, and targeted protein enrichment for even more sensitive mass spectrometry-based biomarker discovery requires a particular immunoassay called immunoprecipitation (IP). Basically, the most robust method to pull-down a specific protein with its partners from cell lysates should be the combination of an antibody conjugated to biotin and magnetic beads with streptavidin. Unfortunately, if your antibody is not yet conjugated to biotin, conjugation is a blind process. That is why, using protein A/G coated sepharose beads is the most popular method.
But what if an antibody biotin conjugation kit could provide simple UV-scan based quantification of the conjugation yield?
Over the last years, mRNA-based experimental approaches have been successfully used in a broad range of research applications (genome editing, gene replacement, vaccine, immunotherapy, cellular reprogramming…) without risk of integration into the genome of the host cell.
mRNA molecules, mimicking fully processed, capped and polyadenylated mRNA, can now be reliably produced via in vitro transcription methods while reducing innate immune stimulation. In this post, 4 tips & Tricks are presented to help produce and optimally use your mRNAs in your research and drug development projects.
Cell-based assays have become a classic way to monitor cells’ reactions to a treatment or a specific stimulus. They involve a reporter construction and a detection system. The classic system is Firefly Luciferase, combined or not with Renilla Luciferase. Luciferases allow simple data acquisition on a plate reader.
Nevertheless, Firefly Luciferase requires cell lysis. End-point acquisition is the only method and optimizations of the right moment is recommended. To bring more convenience, robustness and higher sensitivity, Gaussian luciferase can well be your better choice. [Read more…]
mRNA vaccines are developing very quickly. There are already 25 ongoing clinical trials against cancers, as well as clinical trials against infectious diseases such as HIV. Recombinant monoclonal antibody (mAB) based treatments that have lead to the most successful therapies could even switch to mRNA coding heavy and light chains for direct antibody production into the patient (as of yet still at the level of mouse models).
Indeed, messenger RNAs (mRNA) are now new biological entities to take in consideration for the development of efficient and personalized therapies. They have several advantages over conventional drugs: [Read more…]