Article (Scientific journals)
In vivo PET/CT in a human glioblastoma chicken chorioallantoic membrane model: A new tool for oncology and radiotracer development.
Warnock, Geoffrey; Turtoi, Andrei; Blomme, Arnaud et al.
2013In Journal of Nuclear Medicine, 54 (10), p. 1782-1788
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Keywords :
microPET; Imaging; glioblastoma; cam model; oncology
Abstract :
[en] For many years the laboratory mouse has been used as the standard model for in vivo oncology research, particularly in the development of novel PET tracers, but the growth of tumors on chicken chorioallantoic membrane (CAM) provides a more rapid, low cost and ethically sustainable alternative. For the first time, we demonstrate the feasibility of in vivo PET and CT imaging in a U87 glioblastoma tumor model on chicken chorioallantoic membrane (CAM), with the aim of applying this model for screening of novel PET tracers. Methods: U87 glioblastoma cells were implanted on the CAM at day 11 post-fertilization and imaged at day 18. A small animal imaging cell was used to maintain incubation and allow anesthesia using isoflurane. Radiotracers were injected directly into the exposed CAM vasculature. Sodium [18F]fluoride was used to validate the imaging protocol, demonstrating that image-degrading motion can be removed with anesthesia. Tumor glucose metabolism was imaged using [18F]fluorodeoxyglucose and tumor protein synthesis was imaged using 2-[18F]fluoro-L-tyrosine. Anatomical images were obtained by contrast enhanced CT, facilitating clear delineation of the tumor, delineation of tracer uptake in tumor versus embryo and accurate volume measurements. Results: PET imaging of tumor glucose metabolism and protein synthesis was successfully demonstrated in the CAM U87 glioblastoma model. Catheterization of CAM blood vessels facilitated dynamic imaging of glucose metabolism with [18F]fluorodeoxyglucose and demonstrated the ability to study PET tracer uptake over time in individual tumors, while CT imaging improved the accuracy of tumor volume measurements. Conclusion: In summary, we describe the novel application of PET/CT in the CAM tumor model, with optimization of typical imaging protocols. PET imaging in this valuable tumor model could prove particularly useful for rapid, high-throughput screening of novel radiotracers.
Research Center/Unit :
GIGA CRC (Cyclotron Research Center) In vivo Imaging-Aging & Memory - ULiège
Disciplines :
Oncology
Author, co-author :
Warnock, Geoffrey
Turtoi, Andrei ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > GIGA-R : Labo de recherche sur les métastases
Blomme, Arnaud  ;  Université de Liège - ULiège > Doct. sc. bioméd. & pharma. (Bologne)
Bretin, Florian ;  Université de Liège - ULiège > Centre de recherches du cyclotron
Bahri, Mohamed Ali  ;  Université de Liège - ULiège > Centre de recherches du cyclotron
Lemaire, Christian ;  Université de Liège - ULiège > Centre de recherches du cyclotron
Libert, Lionel ;  Université de Liège - ULiège > Doct. sc. (chimie - Bologne)
Seret, Alain ;  Université de Liège - ULiège > Département de physique > Imagerie médicale expérimentale
Luxen, André ;  Université de Liège - ULiège > Département de chimie (sciences) > Chimie organique de synthèse
Castronovo, Vincenzo ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Biologie générale et cellulaire
Plenevaux, Alain  ;  Université de Liège - ULiège > Centre de recherches du cyclotron
Language :
English
Title :
In vivo PET/CT in a human glioblastoma chicken chorioallantoic membrane model: A new tool for oncology and radiotracer development.
Publication date :
22 August 2013
Journal title :
Journal of Nuclear Medicine
ISSN :
0161-5505
eISSN :
1535-5667
Publisher :
Society of Nuclear Medicine, Reston, United States - Virginia
Volume :
54
Issue :
10
Pages :
1782-1788
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique
Available on ORBi :
since 26 May 2013

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