4.3 Article

A Microfluidic Device for Modulation of Organellar Heterogeneity in Live Single Cells

Journal

ANALYTICAL SCIENCES
Volume 37, Issue 3, Pages 499-505

Publisher

JAPAN SOC ANALYTICAL CHEMISTRY
DOI: 10.2116/analsci.20SCP11

Keywords

Microfluidic device; cell fusion; organellar transfer; peroxisome; mitochondria

Funding

  1. Japan Society for the Promotion of Science [16K07207]
  2. Center of Innovation Program from the Japan Science and Technology Agency
  3. Engineering Network Project from RIKEN
  4. Single Cell Project
  5. Grants-in-Aid for Scientific Research [16K07207] Funding Source: KAKEN

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The study investigated the quantitative properties of peroxisome transfer in a microfluidic device, finding that the number of peroxisomes transferred through a 10 μm tunnel was smaller than that through a 4 μm tunnel. This suggests that the microfluidic device is capable of quantitatively controlling peroxisome transfer.
The quantitatively controlled organellar transfer between living single cells provides a unique experimental platform to analyze the contribution of organellar heterogeneity on cellular phenotypes. We previously developed a microfluidic device which can perform quantitatively controlled mitochondrial transfer between live single cells by promoting strictured cytoplasmic connections between live single cells, but its application to other is unclear. In this study, we investigated the quantitative properties of peroxisome transfer in our microfluidic device. When cells were fused through a 10 or 4 mu m long microtunnel by a Sendai virus envelope-based method, a strictured cytoplasmic connection was achieved with a length corresponding to that of the microtunnel, and a subsequent recovery culture disconnected the fused cells. The peroxisome number being transferred through a 10 mu m length of the microtunnel was smaller than that of 4 mu m. These data suggest that our microfuidic device can perform a quantitative control of peroxisome transfer.

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