The isolated hepatocyte preparation: 30 years on.

Area of Science:

• Biochemistry
• Cell Biology
• Hepatology

Background:

• Hepatocyte isolation is critical for studying cellular functions.
• Early methods using crude collagenase were effective but had limitations.
• Purified collagenase alone proved insufficient for high-yield hepatocyte preparation.

Purpose of the Study:

• To present an improved method for isolating intact rat hepatocytes in high yield.
• To investigate the efficacy of enzyme combinations for hepatocyte isolation.
• To enable detailed studies of intracellular interactions and metabolic regulation.

Main Methods:

• Perfusion of rat liver tissue with enzyme solutions.
• Utilizing a combination of purified collagenase and elastase for tissue digestion.
• Optimization of enzyme concentrations and incubation times.

Main Results:

• The combination of purified collagenase and elastase significantly improved hepatocyte yield and integrity compared to crude collagenase.
• High yields of undamaged hepatocytes were consistently obtained.
• The isolated hepatocytes were suitable for long-term studies of cellular mechanisms.

Conclusions:

• The collagenase-elastase method is superior for preparing intact rat hepatocytes.
• This improved isolation technique facilitates research into cellular interactions and metabolic regulation.
• Studies using these hepatocytes reveal energy-dependent mechanisms maintaining cellular redox potentials.