Close collaboration between four laboratories at the BIMSB led by Stefan Kempa, Christoph Dieterich, Nikolaus Rajewsky and Wei Chen has led to the identification of thousands of gene products, many of which are expressed and are important in stem cell function. This was achieved by precise characterization of all RNA-molecules expressed in the animals’ cells, the so-called transcriptome, without using the genome sequence (Genome Research, July 2011 21: 1193-1200)*.
Planarians are famous for their almost unlimited ability to regenerate any tissue via pluripotent adult stem cells. Their spectacular regenerative capabilities have been studied for more than 100 years. With the development of new molecular and genetics approaches, planarians have recently re-emerged as a model system for the study of regeneration and stem cells.
The scientists at the BIMSB combined two existing and complementary sequencing methods to decipher the transcriptome of the planarian Schmidtea mediterranea without depending on genome sequences. Their approach is of great practical importance since the genomes of many organisms are known to be extremely difficult to assemble, even with the current sequencing technologies.
Furthermore, they also were able to identify several novel gene products (mRNAs) of which they proved that they are specifically expressed in the stem cells. It is the first proteomics study of such scale in this phylum (Platyhelminthes), as Wei Chen pointed out. The catalogue of transcripts assembled in their study, together with the identified peptides, dramatically expands and refines planarian research.
The Berlin Institute for Medical Systems Biology (BIMSB) was launched by the MDC in 2008, supported by start-up funding from the Federal Ministry of Education and Research (BMBF) and the Senate of Berlin. Medical Systems Biology focuses on molecular networks of genes and proteins, their regulation and interaction with each other and their relevance in disease processes. BIMSB works closely with research institutions and networks in Berlin and beyond, in particular with Humboldt University and Charité – Universitätsmedizin Berlin and also with New York University, USA.*De novo assembly and validation of Planaria transcriptome by massive parallel sequencing and shotgun proteomics
Barbara Bachtler | Max-Delbrück-Centrum
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23.05.2018 | Institute of Industrial Science, The University of Tokyo
A research team led by physicists at the Technical University of Munich (TUM) has developed molecular nanoswitches that can be toggled between two structurally different states using an applied voltage. They can serve as the basis for a pioneering class of devices that could replace silicon-based components with organic molecules.
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At the LASYS 2018, from June 5th to 7th, the Laser Zentrum Hannover e.V. (LZH) will be showcasing processes for the laser material processing of tomorrow in hall 4 at stand 4E75. With blown bomb shells the LZH will present first results of a research project on civil security.
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There are videos on the internet that can make one marvel at technology. For example, a smartphone is casually bent around the arm or a thin-film display is rolled in all directions and with almost every diameter. From the user's point of view, this looks fantastic. From a professional point of view, however, the question arises: Is that already possible?
At Display Week 2018, scientists from the Fraunhofer Institute for Applied Polymer Research IAP will be demonstrating today’s technological possibilities and...
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Recently, researchers from Harvard and MIT succeeded in trapping a record 53 atoms and individually controlling their quantum state, realizing what is called a...
The historic first detection of gravitational waves from colliding black holes far outside our galaxy opened a new window to understanding the universe. A...
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