How do jellyfish regrow their limbs in 3 days? Tokyo scientists have an answer

How do jellyfish regrow their limbs in 3 days?

A crucial role is played by "repair-specific proliferative cells", which appear at the injury site.

Cell Activation:

Jellyfish have both resident stem cells (present even before injury) and repair-specific proliferative cells (activated after injury).

Two types of stem cells:

It contains undifferentiated cells that can become muscle, nerve, or other necessary components.

Blastema formation:

Cladonema jellyfish, for example, can regenerate a fully functional tentacle in just 72 hours.

Regeneration Speed:

Tentacles are vital for stinging prey and navigating the water. Rapid regeneration ensures essential functions are quickly restored after injury.

Importance of tentacles:

This remarkable ability gives jellyfish a valuable edge in survival and reproduction.

Evolutionary advantage:

Understanding jellyfish regeneration could aid in developing tissue repair and regeneration technologies for humans.

Medical implications:

While not all can regrow lost limbs like jellyfish, understanding their mechanisms could benefit research in other organisms.

Beyond jellyfish:

Scientists are still actively studying the specific genes and signaling pathways involved in jellyfish regeneration.

Ongoing research