Cas Vanderheijden, Youssef Yakkioui, Thomas Vaessen, Remco Santegoeds, Yasin Temel, Govert Hoogland, Koos Hovinga
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引用次数: 0
Abstract
Purpose: Chordomas are malignant tumors of the axial spine and skull base, and they are notorious for their poor treatment response. Differentiating these tumors from comparatively less malignant chondrosarcomas is crucial for treatment and prognostication. Both tumor types differ in their developmental origin. Chordomas are considered to be derived from notochordal remnants and chondrosarcomas from mesenchymal cells. Here, we evaluated the differential expression of developmental transcription factors in these skull base tumors.
Methods: Histopathologically-confirmed tumor biopsies were obtained from 12 chordoma and 7 chondrosarcoma patients. Following RNA extraction, samples were submitted to real-time quantitative PCR (RT-qPCR) for the evaluation of 32 evolutionary conserved genes that are known to associate with notochord, mesoderm, and axial spine development. Gene expression levels were normalized to housekeeping genes ACTB and RS27a.
Results: Fifteen genes were either exclusively expressed (n = 12) or overexpressed (n = 3; 2.21-4.43 fold increase) in chordoma, compared to chondrosarcoma. Brachyury and CD24 were highly and exclusively expressed in chordoma. Other novel genes exclusive to chordomas included chordin, HOXA5 and ACAN. Vice versa, ten genes were either exclusively expressed (n = 2) or overexpressed (n = 8; 0.01-0.66 fold increase) in chondrosarcoma, compared to chordoma.
Conclusion: As chordoma patients demonstrate a worse prognosis compared to chondrosarcoma patients, the differential expression of chordin, HOXA5 and ACAN and CD24 could be relevant for the pathophysiology of chordomas and may have diagnostic and treatment value. Further study on role of these genes in tumorigenesis is therefore warranted.
期刊介绍:
The Journal of Neuro-Oncology is a multi-disciplinary journal encompassing basic, applied, and clinical investigations in all research areas as they relate to cancer and the central nervous system. It provides a single forum for communication among neurologists, neurosurgeons, radiotherapists, medical oncologists, neuropathologists, neurodiagnosticians, and laboratory-based oncologists conducting relevant research. The Journal of Neuro-Oncology does not seek to isolate the field, but rather to focus the efforts of many disciplines in one publication through a format which pulls together these diverse interests. More than any other field of oncology, cancer of the central nervous system requires multi-disciplinary approaches. To alleviate having to scan dozens of journals of cell biology, pathology, laboratory and clinical endeavours, JNO is a periodical in which current, high-quality, relevant research in all aspects of neuro-oncology may be found.