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- Title
Alterations of ubiquitylation and sumoylation in conventional renal cell carcinomas after the Chernobyl accident: a comparison with Spanish cases.
- Authors
Morell-Quadreny, Luisa; Romanenko, Alina; Lopez-Guerrero, Jose; Calabuig, Silvia; Vozianov, Alexander; Llombart-Bosch, Antonio; Lopez-Guerrero, Jose Antonio
- Abstract
We determined whether ubiquitylation and sumoylation processes are involved in conventional renal cell carcinogenesis associated with chronic, long-term, persistent low doses of ionizing radiation (IR) in patients living for more than 20 years in cesium-137 ((137)Cs)-contaminated areas after the Chernobyl accident in Ukraine. To this end, we assessed the immunohistochemical expression of ubiquitin (Ub), SUMO1, SUMO E2 conjugating enzyme Ubc9, and the cell cycle regulators p53, mdm2, and p14(ARF) in 38 conventional renal cell carcinomas from Ukrainian patients with different degrees of radiation exposure after the Chernobyl accident. As control cases, 18 conventional renal carcinoma (cRCC) tissues from a Spanish cohort were analyzed. No significant differences between the Ukrainian and Spanish groups were found regarding Ub overexpression, although being higher in the Ukrainian cases. Furthermore, this expression was inversely associated with SUMO1 and Ubc9, with no correlation with tumor nuclear grade. There was also a direct relationship between Ubc9 and inflammatory response. These findings do not allow us to consider the immunohistochemical expression of ubiquitylation and sumoylation as valuable markers for discriminating the effects of long-term, low-dose IR exposure in cRCC carcinogenesis.
- Subjects
SPAIN; UKRAINE; IONIZING radiation; RENAL cancer; RENAL cell carcinoma; CARCINOGENESIS; CANCER; PROTEIN metabolism; ENZYME metabolism; BIOCHEMISTRY; COMPARATIVE studies; HISTORY; IMMUNOHISTOCHEMISTRY; INFLAMMATION; KIDNEY tumors; LONGITUDINAL method; PHENOMENOLOGY; RESEARCH methodology; MEDICAL cooperation; PROTEINS; RADIATION carcinogenesis; RESEARCH; EVALUATION research; DISEASE incidence
- Publication
Virchows Archiv: European Journal of Pathology, 2011, Vol 459, Issue 3, p307
- ISSN
0945-6317
- Publication type
journal article
- DOI
10.1007/s00428-011-1124-8