Worms Live Longer with Magnetic Bacteria Treatment

Topic: Biology

Scientists in China gave worms a special type of bacteria that makes them magnetic. This treatment increased their lifespan by over 40% and also helped preserve their nervous system and digestive health.

Researchers led by Prof. An Xu at the Hefei Institutes of Physical Science in China studied how magnetotactic bacteria (MTB) can affect healthy aging. MTB are special microorganisms that contain tiny structures called magnetosomes, which help them navigate using magnetic fields.

The team used a type of worm called Caenorhabditis elegans to test the effects of MTB on lifespan. They gave some worms a strain of MTB called Magnetospirillum magneticum AMB-1 (AMB-1) and found that they lived 43.39% longer than normal. The treatment also helped preserve their nervous system and digestive health.

The researchers then looked at how the magnetosomes in the bacteria affected lifespan. They found that the ability to produce magnetosomes played a major role in extending lifespan. In contrast, worms given non-magnetic versions of the bacteria did not live longer.

Further experiments revealed that the MTB reduced iron buildup and oxidative damage in the worms, which suppressed a type of cell death called ferroptosis. Ferroptosis is associated with iron accumulation and damage to fats within cells. The researchers identified several genes involved in this process, including ftn-1, bli-3, and ads-1.

Why It Matters

This discovery could lead to new treatments for aging-related diseases, which are a major concern in India due to its rapidly growing elderly population.

Key Facts

• Worms treated with magnetotactic bacteria lived 43.39% longer than normal.
• The treatment helped preserve their nervous system and digestive health.
• Magnetosomes in the bacteria played a key role in extending lifespan.
• Ferroptosis, a type of cell death associated with iron accumulation, was suppressed by the MTB.
• Several genes involved in ferroptosis were identified, including ftn-1, bli-3, and ads-1.

Key Terms

Magnetotactic bacteria

Special microorganisms that contain tiny structures called magnetosomes to navigate using magnetic fields.

Ferroptosis

A type of cell death associated with iron accumulation and damage to fats within cells.

Implications

This discovery could lead to new treatments for aging-related diseases, which are a major concern in India due to its rapidly growing elderly population.