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This astonishing, and at the same time bizarre, breakthrough has been achieved on human-derived tiny brain clusters — miniature versions of organs that can be grown in a laboratory from stem cells. Previously, scientists had developed small, beating hearts and tear ducts that could cry like humans. But researchers at Dusseldorf University Hospital have now taken a frightening step forward by growing ‘mini-brains’ with a set of eye-like structures called ‘optical cups’.
In the human body, the retina sends signals to the brain via the optic nerve, allowing us to see images – and scientists seem to have replicated that.
“In the mammalian brain, the nerve fibers of retinal ganglion cells communicate with their brain targets, an aspect not previously shown in an in vitro system,” said senior author Professor Jay Gopalakrishnan.
Once the stem cells developed into tiny brains, the organelles formed these visual cups.
The astonishing development appeared as early as 30 days and matured within 50 days, a time frame similar to how the retina develops in a human fetus, according to the statement.
In total, the researchers created 314 microbrains, 72 percent of which formed visual cups.
The organelles contained different types of retinal cells that formed active ‘light-responsive’ neural networks.
Professor Gopalakrishnan added: “Our work highlights the remarkable ability of brain organelles to generate primitive sensory structures that are sensitive to light and harbor cell types similar to those in the body.”
Work is carried out in order to study human brain development and related diseases.
Researchers hope to one day use the organelles to study brain-eye interaction during fetal development.
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Scientists were astonished, believing that it could be traced back to a form of asexual reproduction.
If confirmed, it would be the first recorded case of parthenogenesis in sharks.
This is a form of asexual reproduction in which a female’s egg can develop into an embryo without being fertilized by a sperm.
Dubbed “Ispera”, experts believe it is the first case of parthenogenesis in sharks, which would be a major development for marine science.
DNA samples from two sharks in the tank were sent to a specialized laboratory to confirm their suspicions.
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