Overexpression of the HMGA2 gene in transgenic mice leads to the onset of pituitary adenomas - PubMed (original) (raw)
. 2002 May 9;21(20):3190-8.
doi: 10.1038/sj.onc.1205428.
Sabrina Battista, Lawrence Kenyon, Gustavo Baldassarre, Vincenzo Fidanza, Andres J P Klein-Szanto, A F Parlow, Rosa Visone, Giovanna M Pierantoni, Eric Outwater, Massimo Santoro, Carlo M Croce, Alfredo Fusco
Affiliations
- PMID: 12082634
- DOI: 10.1038/sj.onc.1205428
Overexpression of the HMGA2 gene in transgenic mice leads to the onset of pituitary adenomas
Monica Fedele et al. Oncogene. 2002.
Erratum in
- Correction to: Overexpression of the HMGA2 gene in transgenic mice leads to the onset of pituitary adenomas.
Fedele M, Battista S, Kenyon L, Baldassarre G, Fidanza V, Klein-Szanto AJP, Parlow AF, Visone R, Pierantoni GM, Outwater E, Santoro M, Croce CM, Fusco A. Fedele M, et al. Oncogene. 2023 Jan;42(5):406. doi: 10.1038/s41388-022-02535-z. Oncogene. 2023. PMID: 36544045 No abstract available.
Abstract
Overexpression of the HMGA2 gene is a common feature of neoplastic cells both in experimental and human models. Intragenic and extragenic HMGA2 rearrangements responsible for HMGA2 gene overexpression have been frequently detected in human benign tumours of mesenchymal origin. To better understand the role of HMGA2 overexpression in human tumorigenesis, we have generated transgenic mice carrying the HMGA2 gene under the transcriptional control of the cytomegalovirus promoter. High expression of the transgene was demonstrated in all the mouse tissues analysed, whereas no expression of the endogenous HMGA2 gene was detected in the same tissues from wild-type mice. In this study, two independent lines of transgenic mice have been generated. By 6 months of age, 85% of female animals of both transgenic lines developed pituitary adenomas secreting prolactin and growth hormone. The transgenic males developed the same phenotype with a lower penetrance (40%) and a longer latency period (about 18 months). Therefore, these data demonstrate that the overexpression of HMGA2 leads to the onset of mixed growth hormone/prolactin cell pituitary adenomas. These transgenic mice may represent an important tool for the study of this kind of neoplasia.
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