Since both hBMSCs and chondrocytes can be labeled using SPIO [25], [26], these findings indicate the potential of SPIO labeling for tracking cells in numerous orthopedic treatments and many other regenerative medicine fields [27].
The aim of this study was to review MRI and labeling techniques for tracking transplanted stem cells (physiological labeling) in the urologic field and to review the characteristics and limitations of current nanoparticle labeling methods.
This review focuses on the current role and limitations of MRI with labeled nanoparticles for tracking transplanted stem cells in urology.
The cells were then exposed to the CFDA-SE Cell Linker (Invitrogen Life Technology, Carlsbad, CA, USA) at a concentration of 2 µM (room temperature, 10 minutes) to label the cells for tracking their behavior inside the recipient gonads.
SPIO labeling for tracking purposes, generally thought to be benign, appears to interfere with B cell functions and requires further examination.
To track the fate of these cells in both clinical studies and animal models, cell labeling techniques such as bromodeoxyuridine (BrdU), green fluorescent protein (GFP) or superparamagnetic iron oxide nanoparticle (SPION) labeling, are being developed for tracking implanted cells on histological examimation, or in vivo visualization by noninvasive magnetic resonance imaging (MRI).
Most recently, a nanomaterial consisting of a mixture of ferumoxytol, heparin sulfate, and protamine sulfate has been reported and can be used to safely label various types of cells for tracking by MRI [ 8].
Labeling of tick β-actin dsRNA for tracking dsRNA during feeding was carried out using fluorescent labeling of dsRNA with Cy™3 Silencer siRNA labeling kit (Ambion) with minor modifications to the manufacturer's protocol.
Injuries to mobilize stem cells for tracking DNA label-retaining cells (LRCs) are a key approach to identifying stem/progenitor cell compartment in distinct lung regions.
Utilization of uGFP transgenic mice as bone marrow donors allowed for tracking the labeled bone marrow migration into the recipient's pancreatic islets after transplantation (bone marrow 25×106 cells) after 500 cGy (TBI).
