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Bio/non-bio interfaces: a straightforward method for obtaining long term PDMS/muscle cell biohybrid constructs
Giada Graziana Genchi1, Gianni Ciofani, Ioannis Liakos
1Scuola Superiore Sant'Anna, The BioRobotics Institute, Pisa, Italy. g.genchi@sssup.it
Colloids and Surfaces. B, Biointerfaces
|February 12, 2013
Summary
This study presents a new method for stably modifying polydimethylsiloxane (PDMS) surfaces using genipin, a natural cross-linker. This innovation overcomes surface recovery issues, enabling long-term cell culture and biological studies.
Area of Science:
- Biomaterials Science
- Cell Biology
- Surface Chemistry
Background:
- Stable surface modification of polydimethylsiloxane (PDMS) is critical for biological applications.
- Hydrophobic recovery of PDMS limits long-term cell culturing and biological event observation.
Purpose of the Study:
- To develop a novel, stable surface modification method for PDMS using genipin.
- To evaluate the effectiveness of genipin-modified PDMS for long-term cell culture and muscle cell differentiation.
Main Methods:
- Developed a PDMS surface modification technique using genipin and amine moieties.
- Prepared PDMS films with varying stiffness.
- Cultured H9c2 muscle cells on modified PDMS for four weeks.
- Assessed surface chemistry, substrate stiffness, and myotube development.
Main Results:
- Genipin modification provided stable PDMS surface chemistry, preventing hydrophobic recovery.
- Lower PDMS stiffness enhanced myotube width and actin-myosin colocalization, indicating functional maturity.
- Modified PDMS supported long-term culture and observation of differentiating muscle cells.
Conclusions:
- Genipin-based surface modification offers a stable and effective method for PDMS.
- Modified PDMS is suitable for long-term in vitro cell behavior studies, including muscle cell contractility.
