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- W33005612 abstract "Background: Human mesenchymal stem cell (hMSC) therapy is promising for cardiac repair. Clinical translation requires a method to serially track cell distribution in vivo. We have previously shown that polylactide microbubbles (MB) are internalized by hMSC, persist in the cytoplasm, and allow ultrasound (US) imaging of intramuscularly injected stem cells in mice, but only up to 4 hr at 37°C. We sought to design a more durable MB for prolonged US cell tracking and validated our method against in vivo bioluminescence imaging (BLI). Methods: Nitrogen gas polymer MB with a polycaprolactone and albumin double layer shell were synthesized. MB acoustic activity was measured in a water tank (Contrast Pulse Sequencing, 7MHz) after synthesis (Day 0) and 7 day storage at 37°C. Cultured hMSC expressing luciferase gene were incubated with MB. MB uptake was studied by confocal microscopy. MB-hMSC complexes or control hMSC were lifted, washed, and re-suspended for in vitro US imaging or in vivoinjection (INJ) (0.5-1.0 x..." @default.
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- W33005612 date "2011-11-22" @default.
- W33005612 modified "2023-09-25" @default.
- W33005612 title "Abstract 16631: Long Term in vivo Stem Cell Tracking Using Contrast Ultrasound" @default.
- W33005612 hasPublicationYear "2011" @default.
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