Engineering cell-substrate interactions on porous membranes for microphysiological systems

Area of Science:

• Biomaterials Science
• Cell Biology
• Tissue Engineering

Background:

• Microphysiological systems (MPS) utilize porous membranes to mimic biological environments for cellular studies.
• These membranes are essential for barrier formation, compartmentalization, and facilitating molecular/cellular transport.
• The specific influence of porous membrane characteristics on cellular responses remains underexplored.

Purpose of the Study:

• To review the impact of porous membrane characteristics on cell-substrate interactions within MPS.
• To understand how pore size, spacing, and scale influence cellular behavior.
• To guide the engineering of porous membranes for optimized cellular responses in biomimetic platforms.

Main Methods:

• Mini-review synthesizing existing research on porous membranes in MPS.
• Analysis of studies correlating pore characteristics (size, spacing) with cellular responses.
• Examination of cell-substrate interactions across various pore scales (nano- to micro-scale).

Main Results:

• Cell-substrate interactions exhibit a multiphasic response to pore characteristics.
• Increasing pore size and spacing generally enhances cell-substrate interactions.
• Nano-scale pores can promote strong interactions, while large micro-scale pores may hinder them.

Conclusions:

• Pore characteristics of membranes are critical determinants of cellular responses in MPS.
• Engineering pore size and spacing is key to controlling cellular behavior.
• This understanding aids in designing effective porous membranes for biomimetic applications.