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Related Experiment Video

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Magnetically actuated microrobots as a platform for stem cell transplantation.

Sungwoong Jeon1,2, Sangwon Kim3, Shinwon Ha4

  • 1Department of Robotics Engineering, Daegu Gyeongbuk Institute of Science & Technology (DGIST), Daegu 42988, South Korea.

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|November 2, 2020
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Summary

Magnetic microrobots enable precise stem cell delivery and 3D culture for neural stem cells and cancer cells. These microrobots show potential for various biomedical applications, including in vivo manipulation.

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Area of Science:

  • Biomedical Engineering
  • Nanotechnology
  • Stem Cell Biology

Background:

  • Precise control and delivery of cells are crucial for regenerative medicine and cancer therapy.
  • Current methods often lack the spatial control or biocompatibility required for complex biological environments.
  • Magnetic microrobots offer a potential solution for targeted cellular manipulation.

Purpose of the Study:

  • To develop and evaluate magnetic microrobots for three-dimensional (3D) cell culture.
  • To assess the precise delivery capabilities of these microrobots for various cell types in vitro, ex vivo, and in vivo.
  • To demonstrate the application of microrobots in complex biological models and living organisms.

Main Methods:

  • Magnetic microrobots were engineered for cell attachment and manipulation.
  • Neural stem cells were cultured and differentiated on microrobots.
  • Microrobots were used to transport cancer cells in a body-on-a-chip model and manipulated within brain tissue and blood vessels.
  • In vivo experiments involved manipulating microrobots carrying mesenchymal stem cells in mice.

Main Results:

  • Hippocampal neural stem cells attached to microrobots proliferated and differentiated into neurons, astrocytes, and oligodendrocytes.
  • Microrobots successfully transported colorectal carcinoma cells to tumor microtissue in a liver-tumor micro-organ network.
  • Microrobot control was demonstrated in mouse brain slices, rat brain blood vessels, and the peritoneal cavity of mice.

Conclusions:

  • Magnetic microrobots are effective tools for 3D stem cell culture and differentiation.
  • These microrobots provide precise delivery of cells for therapeutic applications.
  • The study highlights the significant potential of magnetic microrobots in diverse biomedical fields.