Preparation of metabolically active cell suspensions from wool roots

Area of Science:

• Cell Biology
• Dermatology
• Biochemistry

Background:

• Wool roots contain diverse cell types crucial for hair growth.
• Understanding wool follicle cell metabolism is key to hair biology research.

Purpose of the Study:

• To establish a method for preparing metabolically active cell suspensions from wool roots.
• To characterize the cell types and metabolic activity within these suspensions.

Main Methods:

• Utilized the proteolytic enzyme trypsin for cell dissociation.
• Optimized trypsin and inorganic ion concentrations.
• Incorporated EGTA to enhance cell yield.
• Assessed metabolic activity via radiolabeled precursor incorporation and drug sensitivity.

Main Results:

• Successfully prepared heterogeneous cell suspensions resembling follicle bulb cells, keratinocytes, and inner root sheath cells.
• Determined optimal conditions for trypsin concentration and inorganic ions.
• EGTA inclusion significantly increased cell yield.
• Cell suspensions incorporated [14C]leucine, [3H]uridine, and [3H]thymidine, indicating active protein, RNA, and DNA synthesis.
• Cells demonstrated sensitivity to cycloheximide and emetine, but not chloramphenicol or rifampin, confirming eukaryotic origin.
• Autoradiography revealed highest metabolic activity in presumed follicle bulb cells.

Conclusions:

• A reliable method for generating metabolically active wool root cell suspensions has been established.
• These suspensions provide a valuable tool for studying wool follicle cell biology and keratinocyte differentiation.
• Follicle bulb cells exhibit the highest metabolic activity within the prepared suspension.