Magnetic Resonance Detection of CD34+ Cells from Umbilical Cord Blood Using a 19F Label

PLoS One. 2015 Sep 22;10(9):e0138572. doi: 10.1371/journal.pone.0138572. eCollection 2015.

Abstract

Impaired homing and delayed recovery upon hematopoietic stem cell transplantation (HSCT) with hematopoietic stem cells (HSC) derived from umbilical cord blood (UCB) is a major problem. Tracking transplanted cells in vivo will be helpful to detect impaired homing at an early stage and allows early interventions to improve engraftment and outcome after transplantation. In this study, we show sufficient intracellular labeling of UCB-derived CD34+ cells, with 19F-containing PLGA nanoparticles which were detectable with both flow cytometry and magnetic resonance spectroscopy (MRS). In addition, labeled CD34+ cells maintain their capacity to proliferate and differentiate, which is pivotal for successful engraftment after transplantation in vivo. These results set the stage for in vivo tracking experiments, through which the homing efficiency of transplanted cells can be studied.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Antigens, CD34 / metabolism*
  • Cell Tracking / methods*
  • Cells, Cultured
  • Colony-Forming Units Assay
  • Fetal Blood / cytology*
  • Flow Cytometry
  • Fluorine Radioisotopes
  • Hematopoietic Stem Cells / chemistry
  • Hematopoietic Stem Cells / metabolism*
  • Humans
  • Lactic Acid / chemistry
  • Magnetic Resonance Spectroscopy / methods*
  • Microscopy, Confocal
  • Nanoparticles / chemistry
  • Polyglycolic Acid / chemistry
  • Polylactic Acid-Polyglycolic Acid Copolymer
  • Reproducibility of Results
  • Time Factors

Substances

  • Antigens, CD34
  • Fluorine Radioisotopes
  • Polylactic Acid-Polyglycolic Acid Copolymer
  • Polyglycolic Acid
  • Lactic Acid

Grants and funding

This work was supported by a grant from TI Pharma and performed within the framework of the TIPharma Project D5-402: ‘The Prograft Study: optimizing the applicability of stem cell therapy.’ The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.