Star of the brain -Neural Stem cells
On the off chance that you’re new with stem cells,
we all start our lives as a little bundle of them in the womb. These
astonishing cells can alter their appearance, morphing into each pro cell in
the body.
The stem cells present in brain called as neural
stem cell – separates to become the complex blend of profoundly particular
cells shaping our ‘grey matter’, including cells called astrocytes. These
star-shaped cells play fantastically imperative parts in the brain, by
protecting other cells and repairing those that gotten to be damaged.
A stem cell’s capacity to lay calm and, when
required, to self-renew plays a key part in re-establishing and keeping up the
wellbeing of our organs. Shockingly, cancer stem cells have that same property
permitting them to avoid radiation and chemotherapy medicines which leads to
tumor regrowth. The brain stem cells, which ordinarily direct brain improvement
and support, inadvertently communicate with brain cancer cells in dangerous
tumors, called gliomas, providing them a means to invade other parts of the
brain.
When the neural stem cells transferred into an
astrocyte, the dividing cells can make a genetic ‘spelling mistake’, which
leads to a tumour made up of rogue astrocytes. But some of the tumour cells
become ‘locked’ in a neural stem cell state and continue to grow
uncontrollably, never becoming specialised. These cells, called glioblastoma
stem cells, are thought to be important in fuelling and maintaining brain
tumour growth.
There are two genes, called as p53 and H3F3A. P53
gene protects cells from becoming cancerous. The second gene called H3F3A,
which is commonly faulty in childhood glioblastoma. H3F3A helps package up our
DNA into chromosomes. Researchers managed to make faulty
versions of both of these genes in human neural stem cells. And when they
studied the cells harbouring they concluded that the faulty version of p53 gene
divided faster –which is a hallmark of cancer.
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