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Magnetoliposomes as Contrast Agents for Longitudinal in vivo Assessment of Transplanted Pancreatic Islets in a Diabetic Rat Model

Garcia Ribeiro, Rita Sofia ; Gysemans, Conny ; da Cunha, João Paulo Monteiro Carvalho Mori LU orcid ; Manshian, Bella B ; Jirak, Daniel ; Kriz, Jan ; Gallo, Juan ; Bañobre-López, Manuel ; Struys, Tom and De Cuyper, Marcel , et al. (2018) In Scientific Reports 8(1).
Abstract

Magnetoliposomes (MLs) were synthesized and tested for longitudinal monitoring of transplanted pancreatic islets using magnetic resonance imaging (MRI) in rat models. The rat insulinoma cell line INS-1E and isolated pancreatic islets from outbred and inbred rats were used to optimize labeling conditions in vitro. Strong MRI contrast was generated by islets exposed to 50 µg Fe/ml for 24 hours without any increased cell death, loss of function or other signs of toxicity. In vivo experiments showed that pancreatic islets (50-1000 units) labeled with MLs were detectable for up to 6 weeks post-transplantation in the kidney subcapsular space. Islets were also monitored for two weeks following transplantation through the portal vein of the... (More)

Magnetoliposomes (MLs) were synthesized and tested for longitudinal monitoring of transplanted pancreatic islets using magnetic resonance imaging (MRI) in rat models. The rat insulinoma cell line INS-1E and isolated pancreatic islets from outbred and inbred rats were used to optimize labeling conditions in vitro. Strong MRI contrast was generated by islets exposed to 50 µg Fe/ml for 24 hours without any increased cell death, loss of function or other signs of toxicity. In vivo experiments showed that pancreatic islets (50-1000 units) labeled with MLs were detectable for up to 6 weeks post-transplantation in the kidney subcapsular space. Islets were also monitored for two weeks following transplantation through the portal vein of the liver. Hereby, islets labeled with MLs and transplanted under the left kidney capsule were able to correct hyperglycemia and had stable MRI signals until nephrectomy. Interestingly, in vivo MRI of streptozotocin induced diabetic rats transplanted with allogeneic islets demonstrated loss of MRI contrast between 7-16 days, indicative of loss of islet structure. MLs used in this study were not only beneficial for monitoring the location of transplanted islets in vivo with high sensitivity but also reported on islet integrity and hereby indirectly on islet function and rejection.

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publishing date
type
Contribution to journal
publication status
published
subject
in
Scientific Reports
volume
8
issue
1
article number
11487
pages
12 pages
publisher
Nature Publishing Group
external identifiers
  • pmid:30065302
  • scopus:85050795831
ISSN
2045-2322
DOI
10.1038/s41598-018-29136-9
language
English
LU publication?
no
id
3ab42450-beac-4e7d-8423-a64446f623ef
date added to LUP
2019-02-14 09:05:54
date last changed
2024-04-15 23:19:58
@article{3ab42450-beac-4e7d-8423-a64446f623ef,
  abstract     = {{<p>Magnetoliposomes (MLs) were synthesized and tested for longitudinal monitoring of transplanted pancreatic islets using magnetic resonance imaging (MRI) in rat models. The rat insulinoma cell line INS-1E and isolated pancreatic islets from outbred and inbred rats were used to optimize labeling conditions in vitro. Strong MRI contrast was generated by islets exposed to 50 µg Fe/ml for 24 hours without any increased cell death, loss of function or other signs of toxicity. In vivo experiments showed that pancreatic islets (50-1000 units) labeled with MLs were detectable for up to 6 weeks post-transplantation in the kidney subcapsular space. Islets were also monitored for two weeks following transplantation through the portal vein of the liver. Hereby, islets labeled with MLs and transplanted under the left kidney capsule were able to correct hyperglycemia and had stable MRI signals until nephrectomy. Interestingly, in vivo MRI of streptozotocin induced diabetic rats transplanted with allogeneic islets demonstrated loss of MRI contrast between 7-16 days, indicative of loss of islet structure. MLs used in this study were not only beneficial for monitoring the location of transplanted islets in vivo with high sensitivity but also reported on islet integrity and hereby indirectly on islet function and rejection.</p>}},
  author       = {{Garcia Ribeiro, Rita Sofia and Gysemans, Conny and da Cunha, João Paulo Monteiro Carvalho Mori and Manshian, Bella B and Jirak, Daniel and Kriz, Jan and Gallo, Juan and Bañobre-López, Manuel and Struys, Tom and De Cuyper, Marcel and Mathieu, Chantal and Soenen, Stefaan J and Gsell, Willy and Himmelreich, Uwe}},
  issn         = {{2045-2322}},
  language     = {{eng}},
  month        = {{07}},
  number       = {{1}},
  publisher    = {{Nature Publishing Group}},
  series       = {{Scientific Reports}},
  title        = {{Magnetoliposomes as Contrast Agents for Longitudinal in vivo Assessment of Transplanted Pancreatic Islets in a Diabetic Rat Model}},
  url          = {{http://dx.doi.org/10.1038/s41598-018-29136-9}},
  doi          = {{10.1038/s41598-018-29136-9}},
  volume       = {{8}},
  year         = {{2018}},
}