Are mutations more likely in case a cell is exposed to UV during mitosis?
My TA (who is a stem cell researcher) implied that the answer is yes, as she explicitly said that the risk of getting cancer from gel manicure is non-trivial, due to the following reasoning:
- During the treatment, small cuts are made (not on purpose) to the skin around the nails.
- The exposure to UV occurs just after that, while the tissue is healing.
- This significantly increases the risk of cancer.
However, I didn't find information about that by googling. On the contrary, I encountered studies about using UV to enhance healing of wounds, e.g., Is UV radiation beneficial in postburn wound healing?.
In addition, Wikipedia's scar page says (though I didn't find a reference for that claim in the Wikipedia page):
scars in the skin are less resistant to ultraviolet radiation
Also, people are instructed to avoid exposure to UV after laser hair removal.
Is these two related to mitosis? Or are they instead related to some property of scar tissue?