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posted by mrpg on Saturday September 30 2017, @08:36AM   Printer-friendly
from the they-never-think-of-the-antiparticles dept.

Scientists have examined a protein that will find application in optogenetics and could be used to control muscle and neuronal cells. The paper on the light-sensitive NsXeRprotein of the xenorhodopsin class was published in Science Advances by the international team of researchers from MIPT, Forschungszentrum Jülich, and Institut de Biologie Structurale.

Optogenetics is a new technique that uses light to control neurons or muscle cells in living tissue. It has found wide application in nervous system studies. Optogenetic manipulations are so precise that they make it possible to control individual neurons by switching certain information transfer pathways on or off. Similar methods are also used to partially reverse eyesight or hearing loss as well as to control muscle contractions.

The main tools of optogenetics are light-sensitive proteins that are intentionally inserted into particular cells. After the insertion, the protein becomes attached to the cell surface and moves ions across the membrane upon exposure to light. Thus, in a modified neuron cell, a correctly chosen light impulse may activate a neural signal or, on the contrary, suppress all the signals, depending on which protein is used. By activating signals from individual neurons, it is possible to imitate the functioning of certain brain regions—a technique that modulates the behavior of the organism under study. If such proteins are inserted in muscle cells, an external signal can tense or relax them.

The technique could permit scientists direct control of neurons and muscle cells in a target organism. How long before the researchers use it to play the "Stop Hitting Yourself!" game?


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  • (Score: 1) by pTamok on Saturday September 30 2017, @11:34AM (2 children)

    by pTamok (3042) on Saturday September 30 2017, @11:34AM (#575263)

    Ah. I see. It would have been helpful if it made that clear in the article text, rather than in the linked paper:

    The protein helps to bypass uncontrolled calcium translocation. It is selective and pumps nothing but the protons into the cell.

    It is also a new xenorhodopsin protein.

  • (Score: 2) by takyon on Saturday September 30 2017, @09:20PM (1 child)

    by takyon (881) <reversethis-{gro ... s} {ta} {noykat}> on Saturday September 30 2017, @09:20PM (#575384) Journal

    I had to check that too. The funny thing is that given the subject, protein, proton, or photon would all seem plausible.

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    • (Score: 0) by Anonymous Coward on Sunday October 01 2017, @09:46AM

      by Anonymous Coward on Sunday October 01 2017, @09:46AM (#575509)

      If it's Star Trek, they use photon torpedoes.
      If it's Star Wars, they use proton torpedoes.
      If it's Playboy, they use protein torpedoes.