Abstract
Radiation is a carcinogen, interacting with DNA to produce a range of mutations. Irradiated cells also show genomic instability, as do adjacent non-irradiated cells (the bystander effect); the importance to carcinogenesis remains to be established. Current knowledge of radiation effects is largely dependent on evidence from exposure to atomic bomb whole body radiation, leading to increases in a wide range of malignancies. In contrast, millions of people were exposed to radioactive isotopes in the fallout from the Chernobyl accident, within the first 20 years there was a large increase in thyroid carcinoma incidence and a possible radiation-related increase in breast cancer, but as yet there is no general increase in malignancies. The increase in thyroid carcinoma, attributable to the very large amounts of iodine 131 released, was first noticed in children with a strong relationship between young age at exposure and risk of developing papillary thyroid carcinoma (PTC). The extent of the increase, the reasons for the relationship to age at exposure, the reduction in attributable fraction with increasing latency and the role of environmental factors are discussed. The large number of radiation-induced PTCs has allowed new observations. The subtype and molecular findings change with latency; most early cases were solid PTCs with RET–PTC3 rearrangements, later cases were classical PTCs with RET–PTC1 rearrangements. Small numbers of many other RET rearrangements have occurred in ‘Chernobyl’ PTCs, and also rearrangement of BRAF. Five of the N-terminal genes found in papillary carcinoma rearrangements are also involved in rearrangements in hematological malignancies; three are putative tumor suppressor genes, and two are further genes fused to RET in PTCs. Radiation causes double-strand breaks; the rearrangements common in these radiation-induced tumors reflect their etiology. It is suggested that oncogenic rearrangements may commonly involve both a tumor-suppressor gene (or a DNA repair gene) as well as an oncogene. Involvement of two relevant genes would give a greater chance of progression and a shorter latency than a single-gene mutation. More information is needed on germline mutations conferring susceptibility to radiation-induced PTCs, particularly DNA repair genes. The radiation exposure to the fallout after Chernobyl was very different from the whole body radiation after the atomic bombs. The type and molecular pathology of the thyroid tumors is changing with increasing latency, long latency tumors in other organs could occur in the future. A comprehensive follow up must continue for the lifetime of those exposed.
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References
Adjadj E, Schlumberger M, de Vathaire F . (2009). Germline polymorphisms and susceptibility to differentiated thyroid cancer. Lancet Oncol 10: 181–190.
Armes JE, Hammet F, deSilva M, Ciciulla J, Ramus SJ, Soo WK et al. (2004). Candidate tumor-suppressor genes on chromosome arm 8p in early-onset and high grade breast cancers. Oncogene 23: 5697–5702.
Bastos HN, Antao MR, Silva SN, Azevedo AP, Manita I, Texeira V et al. (2009). Association of polymorphisms of genes of the homologous recombination DNA repair pathway and thyroid cancer risk. Thyroid 19: 1067–1075.
Baverstock K, Egloff B, Pinchera A, Ruchti C, Williams D . (1992). Thyroid cancer after Chernobyl. Nature 359: 21–22.
Bespalchuk PI, Demidchik YE, Demidchik EP, Saenko VA, Yamashita S . (2009). Current trends in incidence and mortality from thyroid cancer in Belarus. In: Nakashima M et al. (ed). Radiation Health Risk Sciences. Springer: Tokyo.
Cardis E, Amoros E, Kesminiene A et al. (1999). Observed and predicted thyroid cancer incidence following the Chernobyl accident. In: Thomas G, Karaoglou A, Williams ED (eds). Radiation and Thyroid Cancer. World Scientific: Singapore, pp 395–405.
Cardis E, Kesminiene A, Ivanov V, Malakhova I, Shibata Y, Khrouch V et al. (2005). Risk of thyroid carcinoma after exposure to 131I in childhood. J Nat Canc Inst 97: 1–9.
Cardis E, Howe G, Ron E, Bebeshko V, Bogdanova T, Bouville A . (2006) et al. Cancer consequences of the Chernobyl accident: 20 years after. J Radiol Protect 26: 127–140.
Celetti A, Cerrato A, Merolla F, Vitagliano D, Vecchio G, Grieco M . (2004). H4(D10S170), a gene frequently rearranged with RET in papillary thyroid carcinomas; functional characterization. Oncogene 23: 109–121.
Ciampi R, Knauf RA, Kerler R, Gandhi M, Zhu Z, Nikiforova MN et al. (2005). Oncogenic AKAP9-BRAF fusion is a novel mechanism of MAPK pathway activation in thyroid cancer. J Clin Invest 115: 94–101.
Collins BJ, Schneider AB, Prinz RA, Xu X . (2006). Low frequency of BRAF mutations in adult patients with papillary thyroid cancers following childhood radiation exposure. Thyroid 16: 61–66.
Demidchik EP, Mrochek A, Demidchik Yu, Vorontsova T, Cherstvoy E, Keningsberg J et al. (1999). Thyroid cancer promoted by radiation in young people of Belarus. In: Thomas G, Karaoglou A, Williams ED (eds). Radiation and Thyroid Cancer. World Scientific: Singapore, pp 51–60.
Demidchik Y . (2005). Thyroid cancer of Belarussians having been exposed as children or adolescents as a result of the Chernobyl accident. Report of the German Federal Office for Radiation Protection, BMU-2005-668, appendix 8 1–20.
Demidchik YE, Demidchik EP, Reiners C, Biko J, Mine M, Saenko VA et al. (2006). Comprehensive clinical assessment of 740 cases of surgically treated thyroid cancer in children of Belarus. Ann Surg 243: 525–532.
Dho SH, Kwon KS . (2003). The Ret finger protein induces apoptosis via its RING finger-B box-coiled-coil motif. J Biol Chem 278: 31902–31908.
Dubrova YE, Nesterov VN, Krouchinsky NG, Ostapenko VA, Vergnaud G, Giraudeau F et al. (1997). Further evidence for elevated human minisatellite mutation rate in Belarus eight years after the Chernobyl accident. Mutation Res 381: 267–278.
Gandhi M, Evdokimova V, Nikiforov YE . (2009). Mechanisms of chromosomal rearrangements in solid tumors: the model of papillary thyroid carcinoma. Mol Cell Endocrinol, e-pub ahead of print.
Griffin KJ, Kirschner LS, Matyakhina L, Stergiopoulos SG, Robinson-White A, Lenherr SM et al. (2004). A transgenic mouse bearing an antisense construct of regulatory subunit 1A of protein kinase A develops endocrine and other tumors. J Med Genet 41: 923–931.
Heidenreich WF, Bogdanova TI, Biryukov AG, Tronko ND . (2004). Time trends of thyroid cancer incidence in Ukraine after the Chernobyl accident. J Radiol Protection 24: 283–293.
Howe GR . (2007). Leukemia following the Chernobyl accident. Health Phys 93: 512–515.
Jacob P, Bogdanova TI, Buglova E, Chepurniy M, Demidchik Y, Gavrilin Y et al. (2006). Thyroid cancer among Ukrainians and Belarusians who were children or adolescents at the time of the Chernobyl accident. J Radiol Protection 26: 51–67.
Kaji K, Norrby K, Paca A, Mileikovsky M, Mohseni P, Woltjen K et al. (2009). Virus free induction of pluripotency and subsequent excision of programming factors. Nature 458: 715–716.
Kazakov VS, Demidchik EP, Astakhova LN . (1992). Thyroid cancer after Chernobyl. Nature 359: 21.
Khetchoumian K, Teletin M, Tisserand J, Mark M, Herquel B, Ignat M et al. (2007). Loss of Trim24 (Tif1alpha) gene function confers oncogenic activity to retinoic acid receptor alpha. Nat Genet 39: 1500–1506.
Kumagai A, Reiners C, Drozd V, Yamashita S . (2007). Childhood thyroid cancers and radioactive iodine therapy. Endocr J 54: 839–847.
Lima J, Trovisco V, Soares P, Máximo V, Magalhães J, Salvatore G et al. (2004). BRAF mutations are not a major event in post-Chernobyl childhood thyroid carcinomas. J Clin Endocrinol Metab 89: 4267–4271.
Merolla F, Pentimalli F, Pacelli R, Vecchio G, Fusco A, Grieco M et al. (2007). Involvement of H4 (D10S170) protein in ATM-dependent response to DNA damage. Oncogene 26: 6167–6175.
Nikiforov YE, Rowland JM, Bove KE, Monforte-Munoz H, Fagin JA . (1997). Distinct pattern of ret oncogene rearrangements in morphological variants of radiation-induced and sporadic thyroid papillary carcinomas in children. Cancer Res 157: 1690–1694.
Nikiforova MN, Stringer JR, Blough R, Medvedovic M, Fagin JA, Nikiforov YE . (2000). Proximity of chromosomal loci that participate in radiation-induced rearrangements in human cells. Science 290: 138–141.
Preston DL, Ron E, Tokuoka S, Funamoto S, Nishi N, Soda M et al. (2007). Solid cancer incidence in atomic bomb survivors:1958–1998. Radiat Res 168: 1–64.
Pukkala E, Kesmininene A, Poliakov S, Ryzhov A, Drozdovitch V, Kovgan L et al. (2006). Breast cancer in Belarus and Ukraine after the Chernobyl accident. Int J Cancer 119: 651–658.
Rabes HM, Demidchik EP, Siderow JD, Lengfelder E, Beimfohr C, Hoelzel D et al. (2000). Pattern of radiation induced RET and NTRK1 rearrangements in 191 post Chernobyl papillary carcinomas: biologic, phenotypic and clinical implications. Clin Cancer Res 6: 1093–1103.
Ron E, Lubin JH, Shore RE, Mabuchi K, Modan B, Pottern LM et al. (1995). Thyroid cancer after exposure to external radiation, a pooled analysis of 7 studies. Radiat Res 141: 259–277.
Ronckers CM, Sigurdson AJ, Stovall M, Smith SA, Mertens AC, Liu Y et al. (2006). Thyroid cancer in childhood cancer survivors. Radiat Res 166: 618–628.
Saad AG, Kumar S, Ron E, Lubin JH, Stanek J, Bove KE et al. (2006). Proliferative activity of human thyroid cells in various age groups and its correlation with the risk of thyroid cancer after radiation exposure. J Clin Endocrinol Metab 91: 2672–2677.
Sandrini F, Matyakhina L, Sarlis NJ, Kirschner LS, Farmakidis C, Gimm O et al. (2002). Regulatory subunit type 1-alpha of protein kinase A (PRKARIA): a tumor-suppressor gene for sporadic thyroid cancer. Genes Chromosomes Cancer 35: 182–192.
Sankaranarayanan K . (1991). Ionizing radiation and genetic risks. Mutat Res 258: 75–97.
Shore RE, Hildreth N, Dvoretsky P, Pasternack B, Andresen E . (1993). Benign thyroid adenomas among persons X-irradiated in infancy for enlarged thymus glands. Radiat Res 134: 217–223.
Sjöblom T, Jones S, Wood LD, Parsons DW, Lin J, Barber TD et al. (2006). The consensus coding sequences of human breast and colorectal cancers. Science 314: 268–274.
Soares P, Trovisco V, Rocha AS, Lima J, Castro P, Preto A et al. (2003). BRAF mutations and RET/PTC rearrangements are alternative events in the etiopathogenesis of PTC. Oncogene 22: 4578–4580.
Slebos RJ, Little RE, Umbach DM, Antipkin Y, Zadaorozhnaja TD, Mendel NA et al. (2004). Mini- and microsatellite mutations in children from Chernobyl accident cleanup workers. Mutation Res 559: 143–151.
Thomas GA, Bunnell H, Cook HA, Williams ED, Nerovnya A, Cherstvoy ED et al. (1999). High prevalence of RET-PTC rearrangements in Ukranian and Belarussian post-Chernobyl thyroid papillary carcinomas. J Clin Endocr Metab 84: 4232–4238.
WHO. (2006). Health Effects of the Chernobyl Accident and Special Health Care Programmes; Report of the UN Chernobyl Forum Expert Group ‘‘Health’’ (EHG). World Health Organisation: Geneva.
Williams ED . (1996). Effects on the thyroid in populations exposed to radiation as a result of the Chernobyl accident. In: One Decade after Chernobyl. International Atomic Energy Authority: Vienna, pp 207–230.
Williams ED, Abrosimov A, Bogdanova T, Demidchik EP, Ito M, LiVolsi V et al. (2004). Thyroid carcinoma after Chernobyl, latent period, morphology and aggressiveness. Br J Cancer 90: 2219–2224.
Williams ED, Abrosimov A, Bogdanova T, Demidchik EP, Ito M, LiVolsi V et al. (2008). Morphological characteristics of Chernobyl-related childhood papillary thyroid carcinomas are independent of radiation exposure but vary with iodine intake. Thyroid 18: 847–852.
Wu ZH, Shi Y, Tibbets RS, Miyamoto S . (2006). Molecular linkage between the kinase ATM and NF-KappaB signalling in response to genotoxic stimuli. Science 311: 1141–1146.
Wynford-Thomas D, Stringer BMJ, Williams ED . (1982). Desensitisation of rat thyroid to the action of TSH. Acta Endocrinol 101: 562–569.
Zablotska LB, Bogdanova TI, Ron E, Epstein OV, Robbins J, Likhtarev IA et al. (2008). A cohort study of thyroid cancer and other thyroid diseases after the Chernobyl accident. Amer J Epidemiol 167: 305–312.
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Williams, D. Radiation carcinogenesis: lessons from Chernobyl. Oncogene 27 (Suppl 2), S9–S18 (2008). https://doi.org/10.1038/onc.2009.349
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DOI: https://doi.org/10.1038/onc.2009.349
Keywords
- Chernobyl
- radiation
- carcinogenesis
- rearrangement
- thyroid
- latency