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  • Writer's pictureKirk Hartley

Japanese Scientists Use Stem Cells in the Lab to Grow Working Teeth for Mice

Regenerative medicine is now one more step down the path. Japanese scientists have now used stem cells to grow mouse teeth in a laboratory. As the cells started to thrive, the cells were put into a mold and grew into teeth. The teeth were then successfully transplanted into the mouths of mice. ScienceDaily has the full story here – a couple of paragraphs are below to prove I’m not making this up.


Tsuji’s team removed two types of stem cells from the molar teeth of mice and grew them in the laboratory. To control the length and shape of the teeth, the cells were placed in a mold, where they grew into entire tooth units.

The entire tooth units were then transplanted into the lower jaws of one-month-old mice. They fused with the tissues and jaw bones around them after about 40 days, Tsuji said. Nerve fibers too could be detected in the new teeth.

Tsuji stressed the importance of finding the right "seed cells" for reparative therapy. In this case, entire tooth units could be grown because the stem cells were taken from molar teeth of mice — where they later grew into enamel, dental bones and other parts that comprised a regular tooth unit.

In 2010, U.S. researchers created an artificial lung that rats used to breathe for several hours."

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