[Optimization of primary human eccrine sweet glands' isolation in vitro]

Area of Science:

• Dermatology and cell biology
• In vitro cell culture techniques

Background:

• Human eccrine sweat glands are crucial for thermoregulation.
• Efficient isolation of primary human sweat gland cells is essential for research.

Purpose of the Study:

• To optimize in vitro isolation methods for human eccrine sweat gland cells.
• To achieve efficient primary human sweat gland cell culture.

Main Methods:

• Skin tissue micro-dissection and enzymatic digestion using three buffer groups: A (Trypsin-EDTA + collagenase-II), B (collagenase-II only), and C (Trypsin-EDTA only).
• Observation of sweat gland emergence time, cell adherence, and growth in culture.
• Assessment of cell proliferation via flow cytometry and identification through immunocytochemical staining (CEA, CK7).

Main Results:

• Group A demonstrated significantly faster sweat gland emergence compared to groups B and C.
• Cells isolated using Trypsin-EDTA and collagenase-II (Group A) showed excellent adherence and growth, similar to collagenase-II alone (Group B).
• No significant difference in proliferation index was observed between groups A and B; cells expressed characteristic markers CEA and CK7.

Conclusions:

• Combining Trypsin-EDTA with collagenase-II offers an efficient method for isolating human sweat gland cells.
• This optimized method reduces isolation time without compromising cell activity or proliferation.
• The findings support the use of this combined enzymatic approach for obtaining viable primary human sweat gland cells for research.