Expression of survivin, an inhibitor of apoptosis protein, in tumors of the nervous system (original) (raw)
Abstract.
Survivin is an inhibitor of apoptosis protein that blocks apoptosis by binding to caspases-3 and -7. It is highly expressed in less-differentiated embryonic cells and rapidly dividing tumors, but not in terminally differentiated adult tissues. Elevated survivin levels are found in malignant systemic tumors, and are associated with chemo-resistance, radiation resistance, and poor prognosis. However, expression of survivin in primary nervous system tumors has not been previously characterized. Immunohistochemistry using anti-human survivin antibody (SURV11-A) was performed on formalin-fixed, paraffin-embedded archival tissue from 112 primary central nervous system tumors. Survivin immunoreactivity was seen in most diffuse astrocytomas [WHO II (2/4), III (3/3), IV (9/10), giant-cell glioblastoma (1), and gliosarcoma (1)]. The intensity and degree of survivin expression showed trends with tumor grade, with glioblastomas having the highest positivity. Pilocytic astrocytomas (5) and pleomorphic xanthoastrocytoma (1) were positive to a lesser degree. In oligodendrogliomas (6) and mixed oligo-astrocytomas [grade II (5), II–III (3), and III (7)], oligodendroglial elements appear to be negative compared to positive mini-gemistocytic oligodendrocytes. Ependymomas [grade II (6) and grade III (1)] were positive. Medulloblastomas (5) and retinoblastoma (1/4) showed focal positivity. All meningiomas [grade I (12), II (9), III (4), and grade I (3) and II (5) with frank brain invasion] were intensely positive. All schwannomas (11) and neurofibromas (6) were intensely positive. Thus, survivin is expressed in the majority of the primary nervous system tumors, particularly in glioblastomas, meningiomas, schwannomas and neurofibromas. Overexpression of survivin in meningiomas and benign peripheral nerve sheath tumors contrasts with previous reports relating it to rapid division and poor prognosis.
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Authors and Affiliations
- Department of Neurosurgery, University of Virginia, Charlottesville, VA 22908, USA
Tsutomu Sasaki & Gerald R. Hankins - Department of Pathology, Division of Neuropathology, University of Virginia, Charlottesville, Virginia, USA
Beatriz M. Lopes - Departments of Neurosurgery and Biomedical Engineering, University of Virginia, Charlottesville, Virginia, USA
Gregory A. Helm
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- Tsutomu Sasaki
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Sasaki, T., Lopes, B.M., Hankins, G.R. et al. Expression of survivin, an inhibitor of apoptosis protein, in tumors of the nervous system.Acta Neuropathol 104, 105–109 (2002). https://doi.org/10.1007/s00401-002-0532-x
- Received: 30 June 2001
- Revised: 08 November 2001
- Accepted: 15 January 2002
- Published: 29 March 2002
- Issue Date: July 2002
- DOI: https://doi.org/10.1007/s00401-002-0532-x