Osteopontin splice variants and polymorphisms in Cancer Progression and Prognosis

Publication date: Available online 28 February 2017
Source:Biochimica et Biophysica Acta (BBA) - Reviews on Cancer
Author(s): Marco Antonio Briones-Orta, S. Eréndira Avendaño-Vázquez, Diana Ivette Aparicio-Bautista, Jason D. Coombes, Georg F. Weber, Wing-Kin Syn
Osteopontin (OPN) is an extracellular matrix protein that is overexpressed in various cancers and promotes oncogenic features including cell proliferation, survival, migration, and angiogenesis, among others. OPN can participate in the regulation of the tumor microenvironment, affecting both cancer and neighboring cells. Here, we reviewed the roles of OPN splice variants (a, b, c) in cancer development, progression, and prognosis, and also discussed the identities of isoforms 4 and 5. We also discussed how single-nucleotide polymorphisms (SNPs) of the OPN gene are an additional factor influencing the level of OPN in individuals, modulating the risks of cancer development and outcome.



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