At the Institut Curie, two CNRS teams have just reported crucial information on the orientation of cells as they divide. The cell division axis determines not only the position of the daughter cells but also their contents and hence their fate. The researchers have shown that the orientation of division depends on focal adhesions of the cell with its surroundings. They have also identified a new molecule that controls the localization of cellular determinants of so-called asymmetric cell division, thus giving rise to two different cells.
These two studies published in the October and November 2005 issues of Nature Cell Biology shed new light on one of the essential mechanisms in the life of a cell whose deregulation may give rise to cancer.
Division is an essential stage in the life of all cells: it participates in the body’s growth, wound repair, combating infection and in cell turnover. Within our bodies at any given moment some 250,000 million cells are dividing, that is 250,000 million mother cells are in the process of forming 500 000 million daughter cells. As individuals, however, we observe no change. This is because each newly formed cell has a well determined location. The mother cell has a given place among other cells in a tissue and, to avoid perturbing this organization, the daughter cells it produces are also appropriately placed. This very precise positioning is indispensable in maintaining the shape of our tissues and organs. The constraints imposed by the environment influence the division and position of the daughter cells.
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09.12.2016 | Cold Spring Harbor Laboratory
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09.12.2016 | Fraunhofer-Institut für Angewandte Polymerforschung IAP
Physicists of the University of Würzburg have made an astonishing discovery in a specific type of topological insulators. The effect is due to the structure of the materials used. The researchers have now published their work in the journal Science.
Topological insulators are currently the hot topic in physics according to the newspaper Neue Zürcher Zeitung. Only a few weeks ago, their importance was...
In recent years, lasers with ultrashort pulses (USP) down to the femtosecond range have become established on an industrial scale. They could advance some applications with the much-lauded “cold ablation” – if that meant they would then achieve more throughput. A new generation of process engineering that will address this issue in particular will be discussed at the “4th UKP Workshop – Ultrafast Laser Technology” in April 2017.
Even back in the 1990s, scientists were comparing materials processing with nanosecond, picosecond and femtosesecond pulses. The result was surprising:...
Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...
A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.
Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...
In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.
“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...
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