Synaptic compartmentalization by micropatterned masking of a surface adhesive cue in cultured neurons

Jae Ryun Ryu, Min Jee Jang, Youhwa Jo, Sunghoon Joo, Do Hoon Lee, Byung Yang Lee, Yoonkey Nam, Woong Sun

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Functions of neuronal circuit are fundamentally modulated by its quality and quantity of connections. Assessment of synapse, the basic unit for a neuronal connection, is labor-intensive and time-consuming in conventional culture systems, due to the small size and the spatially random distribution. In the present study, we propose a novel ‘synapse compartmentalization’ culture system, in which synapses are concentrated at controlled locations. We fabricated a negative dot array pattern by coating the entire surface with poly-l-lysine (PLL) and subsequent microcontact printing of 1) substrates which mask positive charge of PLL (Fc, BSA and laminin), or 2) a chemorepulsive protein (Semaphorin 3F-Fc). By combination of physical and biological features of these repulsive substrates, functional synapses were robustly concentrated in the PLL-coated dots. This synapse compartmentalization chip can be combined with the various high-throughput assay formats based on the synaptic morphology and function. Therefore, this quantifiable and controllable dot array pattern by microcontact printing will be potential useful for bio-chip platforms for the high-density assays used in synapse-related neurobiological studies.

Original languageEnglish
Pages (from-to)46-56
Number of pages11
JournalBiomaterials
Volume92
DOIs
Publication statusPublished - 2016 Jun 1

Keywords

  • Bioassay chip
  • Microcontact printing
  • Neuronal culture
  • Synapse compartmentalization

ASJC Scopus subject areas

  • Biomaterials
  • Bioengineering
  • Ceramics and Composites
  • Mechanics of Materials
  • Biophysics

Fingerprint Dive into the research topics of 'Synaptic compartmentalization by micropatterned masking of a surface adhesive cue in cultured neurons'. Together they form a unique fingerprint.

  • Cite this