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Radiolabeling and In Vivo Imaging of Transplanted Renal Lineages Differentiated from Human Embryonic Stem Cells in Fetal Rhesus Monkeys

Authors
  • Tarantal, Alice F.1, 2, 3
  • Lee, C. Chang I.1
  • Batchelder, Cynthia A.1
  • Christensen, Jared E.1
  • Prater, Daniel1
  • Cherry, Simon R.1, 4, 5
  • 1 University of California, California National Primate Research Center, Pedrick and Hutchison Roads, Davis, CA, 95616-8542, USA , Davis (United States)
  • 2 University of California, Department of Pediatrics, Davis, CA, 95616-8542, USA , Davis (United States)
  • 3 University of California, Department of Cell Biology and Human Anatomy, Davis, CA, 95616-8542, USA , Davis (United States)
  • 4 University of California, Department of Biomedical Engineering, Davis, CA, 95616-8542, USA , Davis (United States)
  • 5 University of California, Center for Molecular and Genomic Imaging, Davis, CA, 95616-8542, USA , Davis (United States)
Type
Published Article
Journal
Molecular Imaging and Biology
Publisher
Springer-Verlag
Publication Date
Apr 09, 2011
Volume
14
Issue
2
Pages
197–204
Identifiers
DOI: 10.1007/s11307-011-0487-1
Source
Springer Nature
Keywords
License
Yellow

Abstract

PurposeThe goals of this study were to optimize radiolabeling of renal lineages differentiated from human embryonic stem (hES) cells and use noninvasive imaging (positron emission tomography (PET) and bioluminescence imaging (BLI)) to detect the cells in fetal monkeys post-transplant.ProcedureshES cells expressing firefly luciferase (5 × 106) were radiolabeled with the optimized concentration of 10 μCi/ml 64Cu-PTSM then transplanted under ultrasound guidance into early second trimester fetal monkey kidneys. Fetuses were imaged in utero with PET and tissues collected for analysis 3 days post-transplant. Fetal kidneys were imaged ex vivo (PET and BLI) post-tissue harvest, and serial kidney sections were assessed by PCR for human-specific DNA sequences, fluorescent in situ hybridization (FISH) for human-specific centromere probes, and immunohistochemistry (IHC) to assess engrafted cells.ResultsTransplanted cells were readily imaged in vivo and identified at the site of injection; tissue analyses confirmed the imaging findings. Using a semi-quantitative method, one in approximately 650 cells in the kidney was shown to be of human origin by PCR and FISH.ConclusionsThese studies suggest that hES cells differentiated toward renal lineages can be effectively radiolabeled, transplanted into fetal monkey kidneys under ultrasound guidance, monitored with PET post-transplant, and identified by PET, BLI, PCR, FISH, and IHC post-tissue harvest.

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