The article that you have linked to is rather unscientific and its interpretations are questionable. It’s hard to make any judgement of the science without having access to the actual detailed scientific publication.
Firstly, the existence of testicular stem cells is hardly a revelation – that has been known for a long time.
Secondly, the ability of stem cells to self-renew (ie. the ability of stem cells to divide to form new stem cells, not just specified daughter cells) has also been known for a long time. So this statement….
…scientists came to a conclusion that man’s testicles are a huge source of stem cells. That means that they aren’t there just to produce sperm… They can actually produce stem cells.
…is a bit odd. There is nothing new here so far.
Then it gets decidedly dodgy….
This is a big discovery, since those stem cells can be used for repairing other tissues in human’s body.
Whoa! Hold on a minute.
There are no lineage restricted stem cells (ie so-called “
adult stem cells”) that can conveniently give rise to multiple lineages. In other words, there are few, if any, adult stem cells that are
pluripotent in the same way embryonic stem cells are. There are
some indications that
some adult stem cells
in some circumstances might be able to give rise to lineages other than those they normally produce. But this is nowhere near being widely clinically applicable.
So, the idea that some people have that any given adult stem cell type, be it testicular stem cells or bone marrow stem cells or liver stem cells or neuronal stem cells or whatever, can be used to repair
any tissue/organ in the body is
false. To date, it is only
embryonic stem cells that hold this promise.
That means that damaged brain or bone tissue could be repaired by injecting those [testicular] stem cells, without the fear of them being rejected by the immune system.
Like I said, this statement appears to be unsupported nonsense to me.