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Ref Type Journal Article
PMID (1689463)
Authors Windle JJ, Albert DM, O'Brien JM, Marcus DM, Disteche CM, Bernards R, Mellon PL
Title Retinoblastoma in transgenic mice.
Abstract Text Retinoblastoma, a malignancy of the eye occurring in young children, has been widely studied as a model for genetic predisposition to cancer. This disease is caused by mutations in both alleles of an anti-oncogene (the retinoblastoma gene, Rb) that inactivate or eliminate the Rb encoded protein, p105Rb (refs 1 and 2). Here we report that expression of a viral oncogene, the simian virus 40 T antigen, in the retina of transgenic mice produces heritable ocular tumours with histological, ultrastructural and immunohistochemical features identical to those of human retinoblastoma. Furthermore, we demonstrate a specific association between p105Rb and T antigen in mouse retinoblastoma tumour cells. Thus, the occurrence of these tumours is in vivo evidence for oncogenesis due to the ocular-specific expression of an Rb-binding oncoprotein that can functionally inactivate the Rb protein. As an animal model for heritable retinoblastoma, these mice should allow the study of the ontogeny, pathogenesis and treatment of this malignant disease.


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Molecular Profile Treatment Approach
Gene Name Source Synonyms Protein Domains Gene Description Gene Role
Therapy Name Drugs Efficacy Evidence Clinical Trials
Drug Name Trade Name Synonyms Drug Classes Drug Description
Gene Variant Impact Protein Effect Variant Description Associated with drug Resistance
Molecular Profile Indication/Tumor Type Response Type Therapy Name Approval Status Evidence Type Efficacy Evidence References
RB1 loss retinoblastoma sensitive Sirolimus Preclinical Actionable In a preclinical study, Sirolimus (rapamycin) decreased tumor occurrence, tumor hypoxia and tumor vascularization in a retinoblastoma mouse model with functionally inactivated Rb protein (PMID: 21468343, PMID: 1689463). 21468343 1689463