Stem Cell Research in Space

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Stem Cell Research in Space

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The InSPA-StemCellEX-H2 experiment aboard the International Space Station is studying the large-scale production (expansion) of blood stem cells in microgravity.

The aim is to generate high-quality stem cells for pharmaceutical and clinical applications on Earth.

Why use microgravity?

On Earth, stem cells expanded in laboratories often lose their ability to differentiate into various blood cells such as:

1. Red blood cells (RBCs)
2. White blood cells (WBCs)
3. Platelets

Researchers believe that microgravity helps maintain stem cells in a high-quality, undifferentiated state, allowing greater expansion without losing their therapeutic potential.

Why Microgravity Transforms Stem Cell Biology?

On Earth, gravity forces cells to settle at the bottom of a culture dish, flattening them and changing how they talk to each other mechanically. To grow them in large volumes, labs must mechanically stir the liquid, which subjects the delicate stem cells to fluid shear stress, damaging or altering them.

In the microgravity environment of the ISS, gravity is virtually eliminated. Cells experience uniform, stress-free suspension. They can maintain their spherical 3D shape and signal naturally without mechanical disruption. This environment acts as a perfect incubator, keeping the cells in their most potent, high-quality state while they multiply rapidly.

 

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