idw – Informationsdienst Wissenschaft
Nachrichten, Termine, Experten
Nachrichten, Termine, Experten
Synthetic – i. e. artificially produced - cells can imitate certain functions of biological cells. These synthetic cells could open up new medical possibilities in the future. In laboratories, such cells can already help in chemical processes on a miniature scale as "mini-reactors". Scientists at the Max Planck Institute for Polymer Research have now developed a method to control the course of these chemical processes with the help of light.
The processes that take place in biological cells are complex: chemical reactions contribute, for example, to the production of certain substances required by the body - whether to supply energy or to defend against disease. For this purpose, biological cells regulate via their cell membrane which substances are absorbed by the cell and which are excreted again.
Artificially produced cells with a size of approx. 20-50 millionth of a metre (20-50 µm) are already able to reproduce such functions in the laboratory. An active component is packed into a shell made of polymers, the so-called "compartment", which enables an enzymatic reaction, for example.
"A biological cell can die - with artificial cells we can build miniature reactors that can be used over a much longer period of time," explains Lucas Caire da Silva, who researches these cells in Katharina Landfester's department. "However, the problem with these mini-reactors so far has been how to control the transport of substances into the cell. In general, the shells of these artificial cells are difficult to permeate."
The team of researchers led by da Silva and Landfester have now changed this behaviour: They have designed special light-responsive molecules, which can be integrated into the polymer membranes to produce channels. As a result, the shell’s permeability increases when irradiated with UV light. If the shell is then irradiated with visible light again, this process can also be reversed.
"We can use this approach to precisely control when a substance enters the compartment, allowing us to initiate a chemical reaction at a specific time and place," says da Silva.
The scientists hope that in future they will be able to use their mini-reactors to control reactions that actually take place in biological cells on a micro-scale and see many applications for this technology, for example in medicine.
The researchers have now published their results in the journal "Angewandte Chemie".
Dr. Lucas Caire da Silva
silva@mpip-mainz.mpg.de
Cao, S.; Caire da Silva, L.; Landfester, K.: Light-Activated Membrane Transport in Polymeric Cell-Mimics. Angewandte Chemie International Edition, e202205266 (2022)
https://dx.doi.org/10.1002/anie.202205266
Molecules that react to light were introduced into an artificial cell membrane. This allows the perm ...
© MPI-P
Criteria of this press release:
Journalists
Biology, Chemistry, Medicine
transregional, national
Scientific Publications
English
Molecules that react to light were introduced into an artificial cell membrane. This allows the perm ...
© MPI-P
You can combine search terms with and, or and/or not, e.g. Philo not logy.
You can use brackets to separate combinations from each other, e.g. (Philo not logy) or (Psycho and logy).
Coherent groups of words will be located as complete phrases if you put them into quotation marks, e.g. “Federal Republic of Germany”.
You can also use the advanced search without entering search terms. It will then follow the criteria you have selected (e.g. country or subject area).
If you have not selected any criteria in a given category, the entire category will be searched (e.g. all subject areas or all countries).
