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For my PhD project, I chose an advisor who worked on DNA and I started working with her on the physical properties of DNA. I worked with Jackie Barton in the early days of what’s now called DNA-mediated electron transfer. And that was a very controversial idea.
in cellbiology. During graduate school at MIT and the Whitehead Institute, my interest in cell division came full circle and I was able to explore how a cell divides to make two cells that are genetically identical. Each cell needs the same amount of DNA so they can function like each other.
For his postdoctoral stay he joined the group of André Nussenzweig, where he started to work on DNA repair, particularly focusing on the role of histone H2AX. In 2005, he joined CNIO to lead the Genomic Instability Group where he has been ever since.
The tools in this kit fall into a few broad categories: understanding protein structures and their functional significance, identifying ligands that bind into functionally significant pockets, and developing assays that confirm target engagement along with demonstrating the anticipated impact on cellbiology.
In contrast, non-coding mutations have effects on gene expression, transcript stability, and the physical state of the DNA itself (e.g., Network expansion of genetic associations defines a pleiotropy map of human cellbiology. Coding mutations have a more direct effect through direct alteration of a gene product.
Srinivasan has led the development of multiple computational pipelines to process data from different next generation sequencing techniques with applications in oncology, genome editing systems including CRISPR-Cas mediated DNA editing, and ADAR-mediated RNA editing.
As such, it has been proposed that inhibiting CDK7 would provide a potent means of inhibiting cell cycle progression, which may be especially relevant given that there is compelling evidence from gene knockout studies in mice for lack of an absolute requirement for CDK2, CDK4 and CDK6 for the cell cycle at least in most cell types (M alumbres et al.,
And what they found, remarkably, is the world’s largest genome ; each fern cell contains 160.45 billion bases of DNA which, if unfurled, would extend for more than 100 meters—taller than the Statue of Liberty. billion bases of DNA, the human genome measures just 2 meters in length when stretched end-to-end.
By Allessandra DiCorato October 11, 2023 In 2011, Robert Manguso was working in a cellbiology lab when his mother was diagnosed with Merkel cell carcinoma, a rare and aggressive skin cancer. When I began my PhD I completely switched my focus, and I haven’t looked back,” said Manguso.
Collecting the Numbers We can easily measure some things in biology yet struggle to measure others. Thanks to decades of progress in molecular sequencing technologies, it is simple to read out the order of nucleotides in a DNA sequence, for example, or to quantify messenger RNAs as they are made by a cell.
1 One rarely pauses to ponder how so much DNA — let alone sugar, proteins, and everything else — can fit inside such a small vessel. Biochemistry textbooks depict cells as spacious places, where molecules float in secluded harmony. Without mathematics, I learned, biology is naked; we can only comprehend it at arm's length.
For example, integrating gene therapies that alter the DNA of cardiac cells pose risks of unintended genetic modifications, which could lead to tumorigenesis. Continued growth in the field relies on multidisciplinary efforts combining biology, engineering, and clinical medicine.
But now, by studying DNA extracted from microbes in the blood of almost 10,000 healthy people, this paper shows that there is no such thing. Read Transcription factors bind to DNA and control gene expression. They tend to “group up” in cells. Molecular Systems Biology. Nature Microbiology. Meeussen J.V.W.
2/ Live Long and Prosper, Lil’ Yeasty Boys Yeast cells usually live for about one week. Yeast die for two reasons: Either their nucleolus (where the DNA is kept) degrades and dies, or their mitochondria whimpers out and they stop making energy. kilobases” of DNA into a plant genome. (My Nature CellBiology.
2/ Live Long and Prosper, Lil’ Yeasty Boys Yeast cells usually live for about one week. Yeast die for two reasons: Either their nucleolus (where the DNA is kept) degrades and dies, or their mitochondria whimpers out and they stop making energy. kilobases” of DNA into a plant genome. (My Nature CellBiology.
. “The problem is that cells only make small amounts of p53 and then quickly break it down as it is a very large and disordered protein,” says the study’s last author Michael Landreh, researcher at the Department of Microbiology, Tumor and CellBiology, Karolinska Institutet.
DNA, proteins, polysaccharides, etc.). Cells require energy for this process. 2 Organisms are categorised based on their anabolism and according to the source used by cells to build-up molecules. Anabolism consists of three basic steps: the production of precursor molecules (e.g., nucleotides, monosaccharides, etc.),
.” This technology could be used to design protein therapeutics that can bind to, and “shut down,” harmful or misfolded proteins in living cells. Thousands of transcription factors — proteins that bind DNA and control gene expression — were studied in human cells. Nature CellBiology.
During this process, the cells’ genomes ditch their methyl groups, an important epigenetic mark. Erasing methyl groups on DNA is necessary for normal egg and sperm development. Reaching the oogonia stage marked an impressive achievement in germ cellbiology, because previous methods only went up to the PGC stage.
Short DNA strands were discovered that can specifically and tightly bind to zinc and cadmium ions. Perhaps there is now a way to use DNA to extract metals: You could fuse the DNA strands to an antibody, coat them onto electronics, and then use a column to isolate the DNA:metal compounds? Nature Chemical Biology.
Nature Reviews Molecular CellBiology (2009). Link The second decade of synthetic biology: 2010–2020 , by Meng F. & Link Synthetic biology in mammalian cells: next generation research tools and therapeutics , by Lienert F. Nature Reviews Molecular CellBiology (2014). . & Weiss R.
Experiments performed with the bacterium Streptococcus pneumoniae not only led to the discovery of DNA as the principal hereditary molecule but also yielded early tools for genetic engineering. The study of RNA tumor viruses revealed reverse transcriptase , an enzyme integral in studying RNA biology.
Bernstein is also chair of the Department of Cancer Biology at Dana-Farber Cancer Institute, a professor in cellbiology and pathology at Harvard Medical School, and holds the Richard and Nancy Lubin Family Chair. Inevitable progression Gliomas arise from glial cells, which protect and support a healthy nervous system. “So,
For example, cloning DNA molecules and inserting them into cells — a process required for basically all experiments in molecular biology — takes up to a week of work. But looking ahead to the second bottleneck, what does it mean to say that biology is “complex”? Even the humble E.
Nature Reviews Molecular CellBiology (2009). Link The second decade of synthetic biology: 2010–2020 , by Meng F. & Link Synthetic biology in mammalian cells: next generation research tools and therapeutics , by Lienert F. Nature Reviews Molecular CellBiology (2014). . & Weiss R.
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