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Studies on imaging and tracking transplanted cells
Date:12/10/2008

Tampa, Fla. (Dec. 10, 2008) Successfully monitoring the distribution and fate of transplanted stem cells through imaging and subsequent tracking would aid clinicians in their ability to evaluate the efficacy of transplanted cells. Three studies published in the current issue of Cell Transplantation (Vol. 17, No.8) assess various imaging techniques and evaluate the degree to which the techniques afford clinicians useable imaging and tracking data.

Bioluminescent imaging of human fetal hepatocytes

In a study conducted by Dr. Mark A. Zern and colleagues at the Transplant Research Institute, University of California Davis Medical Center, the use of bioluminescent imaging to track transplanted immortalized human fetal hepatocytes injected into mice was evaluated. According to the researchers, it was essential for them to evaluate via noninvasive monitoring the effectiveness of transplanted cells to engraft and repopulate the recipient liver. Using double or triple fusion lentiviral vectors in a mouse model transplanted with immortalized fetal hepatocytes, the researchers for the first time imaged in vivo human hepatic progenitor cells transplanted into a rodent model.

"Our results, confirmed by a series of biochemical and histologic modalities, indicate that this imaging system appears to be a promising approach for repeatedly and noninvasively monitoring transplanted hepatic cells," said Zern.

Contact: Dr. Mark A. Zern, Transplant Institute, UC Davis Medical Center, (916) 734-8063; mazern@ucdavis.edu

Using small particles of iron oxide

A second study involving imaging published in this issue of Cell Transplantation (Vol. 17 No. 8), evaluated the use of cloned mensenchymal stem cells (MSC) labeled with clinically-approved small particles of iron oxide (SPIO) for the treatment of experimental autoimmune encephalomyelitis (EAE). Results revealed an increase
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Contact: Dr. Mark A. Zern
mazern@ucdavis.edu
916-734-8063
Cell Transplantation Center of Excellence for Aging and Brain Repair
Source:Eurekalert

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