S100 protein
ProteinWikipedia
6
MENTIONS
4
EPISODES
1
PODCASTS
Search complete. 6 mentions across 4 episodes found for "S100 protein".
Sep 22, 2026
speaker_1HOST
The only way the medical team definitively diagnosed it was through advanced histopathological examination.
speaker_1HOST
Specifically, they used CD1A and S100 immunostaining on the biopsy tissue.
speaker_0HOST
Right.
speaker_0HOST
And to give you listening a visual of what immunostaining is, they essentially wash the biopsy sample in targeted antibodies that act like, well, biological highlighters.
speaker_1HOST
That's a perfect way to describe it.
speaker_0HOST
Yeah.
speaker_0HOST
So if those highlighters stick to specific CD1A and S100 proteins and glow under the microscope, the doctor knows instantly they aren't looking at a rash.
speaker_0HOST
They're looking at a rare neoplasm.
speaker_0HOST
Right.
speaker_0HOST
They applied markers called CD1A and S100 to the tissue sample.
speaker_1HOST
Wait, what do those markers actually do? Like, why are they necessary if we already have the tissue under a microscope?
speaker_0HOST
Think of them as biological blacklights.
speaker_0HOST
Yeah.
speaker_0HOST
If you just look at the tissue normally, it looks like a mess of inflamed cells.
speaker_0HOST
But CD1A and S100 are chemical tags that bind only to incredibly specific rogue immune cells.
speaker_1HOST
So they highlight the real issue.
speaker_1HOST
It turned out to be adult Langerhans cell histiocytosis, or LCH, which is a rare cellular disorder.
speaker_1HOST
They only caught it by doing a biopsy and using specific immunostaining markers, essentially scanning the cell's barcodes, looking for proteins called CD1A and S100 to prove the cells were part of this rare condition.
speaker_0HOST
And this diagnostic overlap is a constant threat, especially for older women experiencing genitourinary syndrome of menopause, or GSM.
speaker_1HOST
Yes, heavily underdiagnosed.
speaker_1HOST
That is a great way to describe it.
speaker_1HOST
They were looking for very specific protein markers known as CD1A and S100.
speaker_0HOST
Okay.
speaker_1HOST
If those markers light up under the microscope, it tells the pathologist that they aren't looking at a simple rash.