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Chemistries for Making Additive Nanolithography in OrmoComp Permissive for Cell Adhesion and Growth.

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  • 1American Society for Engineering Education (ASEE) Post-Doctoral Fellow at US Naval Research Laboratory , Washington, DC 20375 , United States.

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Summary

Two-photon lithography creates custom nanoarchitectures. Modifying OrmoComp with diamines enables neuron adhesion and growth on these structures, advancing biological studies.

Keywords:
E18 murine corticesMichael additionOrmocompbiocompatibilitydiaminestwo-photon lithography

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Area of Science:

  • Biomaterials Science
  • Neuroscience
  • Nanotechnology

Background:

  • Two-photon lithography enables precise fabrication of complex nanoarchitectures using photopolymers.
  • Acrylate-based polymers, commonly used in lithography, often exhibit poor cell adhesion, limiting their biological applications.
  • Specifically, OrmoComp, a common photopolymer, does not support the attachment and growth of E18 murine cortical neurons.

Purpose of the Study:

  • To enhance the biocompatibility of lithographically fabricated nanoarchitectures.
  • To enable neuron adhesion and growth on OrmoComp structures for advanced biological studies.
  • To develop a surface modification strategy that complements existing cell culture coatings.

Main Methods:

  • Fabrication of nanoarchitectures using two-photon lithography with OrmoComp.
  • Surface functionalization of OrmoComp structures via reaction with various diamines.
  • Assessment of E18 murine cortical neuron attachment and growth on modified and unmodified surfaces.
  • Comparison of amine-terminated OrmoComp coatings with traditional poly-d-lysine (PDL) and laminin coatings.

Main Results:

  • Unmodified OrmoComp structures did not support E18 murine cortical neuron adhesion and growth.
  • Reaction with specific diamines rendered OrmoComp surfaces permissive for neuron attachment and growth.
  • The amine-terminated surfaces provided a cell-compatible coating, mimicking poly-d-lysine (PDL) and laminin effects.
  • This modification allowed for orthogonal patterning, distinguishing functionalized areas from the surrounding substrate.

Conclusions:

  • Surface modification of OrmoComp with diamines effectively promotes neuron adhesion and growth.
  • This approach offers a novel method for creating cell-instructive biomaterials for neuroscience research.
  • Orthogonally modified nanoarchitectures provide enhanced design flexibility for advanced biological studies and tissue engineering.