1
|
Livingston GK, Ryan TL, Escalona MB, Foster AE, Balajee AS. Retrospective Evaluation of Cytogenetic Effects Induced by Internal Radioiodine Exposure: A 27-Year Follow-Up Study. Cytogenet Genome Res 2023; 163:154-162. [PMID: 37573786 DOI: 10.1159/000533396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Accepted: 08/01/2023] [Indexed: 08/15/2023] Open
Abstract
Radioiodine (131I) is widely used in the treatment of hyperthyroidism and as an effective ablative therapy for differentiated thyroid cancer. Radioiodine (131I) constitutes 90% of the currently used therapies in the field of nuclear medicine. Here, we report the cytogenetic findings of a long-term follow-up study of 27 years on a male patient who received two rounds of radioiodine treatment within a span of 26 months between 1992 and 1994 for his papillary thyroid cancer. A comprehensive cytogenetic follow-up study utilizing cytokinesis blocked micronucleus assay, dicentric chromosome assay, genome wide translocations and inversions was initiated on this patient since the first administration of radioiodine in 1992. Frequencies of micronuclei (0.006/cell) and dicentric chromosomes (0.008/cell) detected in the current study were grossly similar to that reported earlier in 2019. The mFISH analysis detected chromosome aberrations in 8.6% of the cells in the form of both unbalanced and balanced translocations. Additionally, a clonal translocation involving chromosomes 14p; 15q was observed in 2 of the 500 cells analyzed. Out of the 500 cells examined, one cell showed a complex translocation (involving chromosomes 9, 10, and 16) besides 5 other chromosome rearrangements. Collectively, our study indicates that the past radioiodine exposure results in long-lasting chromosome damage and that the persistence of translocations can be useful for both retrospective biodosimetry and for monitoring chromosome instability in the lymphocytes of radioiodine exposed individuals.
Collapse
Affiliation(s)
- Gordon K Livingston
- Cytogenetic Biodosimetry Laboratory, Radiation Emergency Assistance Center/Training Site, Oak Ridge Institute for Science and Education, Oak Ridge Associated Universities, Oak Ridge, Tennessee, USA
| | - Terri L Ryan
- Cytogenetic Biodosimetry Laboratory, Radiation Emergency Assistance Center/Training Site, Oak Ridge Institute for Science and Education, Oak Ridge Associated Universities, Oak Ridge, Tennessee, USA
| | - Maria B Escalona
- Cytogenetic Biodosimetry Laboratory, Radiation Emergency Assistance Center/Training Site, Oak Ridge Institute for Science and Education, Oak Ridge Associated Universities, Oak Ridge, Tennessee, USA
| | - Alvis E Foster
- Indiana University Health, Ball Memorial Hospital, Muncie, Indiana, USA
| | - Adayabalam S Balajee
- Cytogenetic Biodosimetry Laboratory, Radiation Emergency Assistance Center/Training Site, Oak Ridge Institute for Science and Education, Oak Ridge Associated Universities, Oak Ridge, Tennessee, USA
| |
Collapse
|
2
|
Cologne J, Sugiyama H, Hamasaki K, Tatsukawa Y, French B, Sakata R, Misumi M. Chromosome aberrations among atomic-bomb survivors exposed in utero: updated analysis accounting for revised radiation doses and smoking. Radiat Environ Biophys 2022; 61:59-72. [PMID: 35175360 PMCID: PMC8897374 DOI: 10.1007/s00411-021-00960-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Accepted: 12/27/2021] [Indexed: 06/14/2023]
Abstract
A previous study of peripheral blood lymphocyte translocations around age 40 among atomic-bomb survivors exposed in utero revealed no overall association with radiation dose-despite a clear association between translocations and dose among their mothers-but the data suggested an increase at doses below 100 mGy with a definite peak. That analysis of the in utero-exposed survivors did not adjust for their subsequent smoking behavior, an established cause of chromosomal aberrations, or their subsequent exposures to medical irradiation, a potential mediator. In addition, atomic-bomb survivor radiation dose estimates have subsequently been updated and refined. We therefore re-estimated the dose response using the latest DS02R1 dose estimates and adjusting for smoking as well as for city and proximal-distal location at the time of exposure to the atomic bomb. Sex of the survivor, mother's age around the time of conception, and approximate trimester of gestation at the time of exposure were also considered as explanatory variables and modifiers. Precision of the estimated dose response was slightly lower due to greater variability near zero in the updated dose estimates, but there was little change in evidence of a low-dose increase and still no suggestion of an overall increase across the entire dose range. Adjustment for smoking behavior led to a decline in background number of translocations (the dose-response intercept), but smoking did not interact with dose overall (across the entire dose range). Adjustment for medical irradiation did not alter the association between dose and translocation frequency. Sex, mother's age, and trimester were not associated with number of translocations, nor did they interact with dose overall. Interactions with dose in the low-dose range could not be evaluated because of numerical instability.
Collapse
Affiliation(s)
- John Cologne
- Department of Statistics, Radiation Effects Research Foundation, 5-2 Hijiyama Park, Minami-ku, Hiroshima, 732-0815, Japan.
| | - Hiromi Sugiyama
- Department of Epidemiology, Radiation Effects Research Foundation, Hiroshima, Japan
| | - Kanya Hamasaki
- Department of Molecular Biosciences, Radiation Effects Research Foundation, Hiroshima, Japan
| | - Yoshimi Tatsukawa
- Department of Clinical Studies, Radiation Effects Research Foundation, Hiroshima, Japan
| | - Benjamin French
- Department of Biostatistics, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Ritsu Sakata
- Department of Epidemiology, Radiation Effects Research Foundation, Hiroshima, Japan
| | - Munechika Misumi
- Department of Statistics, Radiation Effects Research Foundation, 5-2 Hijiyama Park, Minami-ku, Hiroshima, 732-0815, Japan
| |
Collapse
|
3
|
Di Giacomo D, Quintini M, Pierini V, Pellanera F, La Starza R, Gorello P, Matteucci C, Crescenzi B, Fiumara PF, Veltroni M, Borlenghi E, Albano F, Forghieri F, Maccaferri M, Bettelli F, Luppi M, Cuneo A, Rossi G, Mecucci C. Genomic and clinical findings in myeloid neoplasms with PDGFRB rearrangement. Ann Hematol 2021; 101:297-307. [PMID: 34859285 PMCID: PMC8742810 DOI: 10.1007/s00277-021-04712-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Accepted: 10/26/2021] [Indexed: 11/08/2022]
Abstract
Platelet-derived growth factor receptor B (PDGFRB) gene rearrangements define a unique subgroup of myeloid and lymphoid neoplasms frequently associated with eosinophilia and characterized by high sensitivity to tyrosine kinase inhibition. To date, various PDGFRB/5q32 rearrangements, involving at least 40 fusion partners, have been reported. However, information on genomic and clinical features accompanying rearrangements of PDGFRB is still scarce. Here, we characterized a series of 14 cases with a myeloid neoplasm using cytogenetic, single nucleotide polymorphism array, and next-generation sequencing. We identified nine PDGFRB translocation partners, including the KAZN gene at 1p36.21 as a novel partner in a previously undescribed t(1;5)(p36;q33) chromosome change. In all cases, the PDGFRB recombination was the sole cytogenetic abnormality underlying the phenotype. Acquired somatic variants were mainly found in clinically aggressive diseases and involved epigenetic genes (TET2, DNMT3A, ASXL1), transcription factors (RUNX1 and CEBPA), and signaling modulators (HRAS). By using both cytogenetic and nested PCR monitoring to evaluate response to imatinib, we found that, in non-AML cases, a low dosage (100–200 mg) is sufficient to induce and maintain longstanding hematological, cytogenetic, and molecular remissions.
Collapse
Affiliation(s)
- Danika Di Giacomo
- Department of Medicine and Surgery, Center for Hemato-Oncology Research (C.R.E.O.), University of Perugia, Perugia, Italy
| | - Martina Quintini
- Department of Medicine and Surgery, Center for Hemato-Oncology Research (C.R.E.O.), University of Perugia, Perugia, Italy
| | - Valentina Pierini
- Department of Medicine and Surgery, Center for Hemato-Oncology Research (C.R.E.O.), University of Perugia, Perugia, Italy
| | - Fabrizia Pellanera
- Department of Medicine and Surgery, Center for Hemato-Oncology Research (C.R.E.O.), University of Perugia, Perugia, Italy
| | - Roberta La Starza
- Department of Medicine and Surgery, Center for Hemato-Oncology Research (C.R.E.O.), University of Perugia, Perugia, Italy
| | - Paolo Gorello
- Department of Medicine and Surgery, Center for Hemato-Oncology Research (C.R.E.O.), University of Perugia, Perugia, Italy.,Department of Chemistry, Biology and Biotechnology, University of Perugia, Perugia, Italy
| | - Caterina Matteucci
- Department of Medicine and Surgery, Center for Hemato-Oncology Research (C.R.E.O.), University of Perugia, Perugia, Italy
| | - Barbara Crescenzi
- Department of Medicine and Surgery, Center for Hemato-Oncology Research (C.R.E.O.), University of Perugia, Perugia, Italy
| | | | - Marinella Veltroni
- Department of Pediatric Oncology-Hematology, Meyer Children's Hospital, Florence, Italy
| | | | - Francesco Albano
- Hematology Unit, Department of Emergency and Organ Transplantation, University of Bari, Bari, Italy
| | - Fabio Forghieri
- Section of Hematology, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, AOU Policlinico, Modena, Italy
| | - Monica Maccaferri
- Section of Hematology, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, AOU Policlinico, Modena, Italy
| | - Francesca Bettelli
- Section of Hematology, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, AOU Policlinico, Modena, Italy
| | - Mario Luppi
- Section of Hematology, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, AOU Policlinico, Modena, Italy
| | - Antonio Cuneo
- Hematology, Department of Medical Sciences, St. Anna University Hospital, 44124, Ferrara, Italy
| | | | - Cristina Mecucci
- Department of Medicine and Surgery, Center for Hemato-Oncology Research (C.R.E.O.), University of Perugia, Perugia, Italy.
| |
Collapse
|
4
|
Abstract
This paper describes how we discovered the juxtaposition of the MYC gene to the human immunoglobulin loci and how that finding was extended to characterize molecularly the t(14;18) chromosome translocation of follicular lymphoma and to clone the BCL2 gene. BCL2 is also overexpressed in CLL, the most common human leukemia. We discovered that most of human CLLs have a deletion of two microRNAs residing in the same polycistronic RNA, miR-15a and miR-16-1, and that these two microRNAs are negative regulators of BCL2. Thus, loss of miR-15/16 leads to overexpression of BCL2 that can be targeted by the new drug, venetoclax, that was recently approved by the FDA for the treatment of aggressive CLLs.
Collapse
|
5
|
Andersson MK, Stenman G. The landscape of gene fusions and somatic mutations in salivary gland neoplasms - Implications for diagnosis and therapy. Oral Oncol 2016; 57:63-9. [PMID: 27101980 DOI: 10.1016/j.oraloncology.2016.04.002] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Accepted: 04/01/2016] [Indexed: 12/15/2022]
Abstract
Recent studies of the genomic landscape of salivary gland tumors have provided important insights into the molecular pathogenesis of these tumors. The most consistent alterations identified include a translocation-generated gene fusion network involving transcription factors, transcriptional coactivators, tyrosine kinase receptors, and other kinases. In addition, next-generation sequencing studies of a few subtypes of salivary neoplasms have revealed hotspot mutations in individual genes and mutations clustering to specific pathways frequently altered in cancer. Although limited, these studies have opened up new avenues for improved classification and targeted therapies of salivary gland cancers. In this review, we summarize the latest developments in this field, focusing on tumor types for which clinically important molecular data are available.
Collapse
Affiliation(s)
- Mattias K Andersson
- Sahlgrenska Cancer Center, Department of Pathology, Sahlgrenska University Hospital, University of Gothenburg, Gothenburg, Sweden
| | - Göran Stenman
- Sahlgrenska Cancer Center, Department of Pathology, Sahlgrenska University Hospital, University of Gothenburg, Gothenburg, Sweden
| |
Collapse
|
6
|
Gill Super HJ. A role for epigenetics in the formation of chromosome translocations in acute leukemia. Cancer Genet 2015; 208:230-6. [PMID: 25953461 DOI: 10.1016/j.cancergen.2015.03.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Revised: 02/01/2015] [Accepted: 03/05/2015] [Indexed: 01/15/2023]
Abstract
In general, the field of cancer genetics seems to have shifted its focus from cancer-associated genes to cancer-associated epigenetic activity. An abundance of evidence suggests that epigenetic malfunction, such as aberrant histone modification, and altered DNA methylation, is at the root of much, if not most aberrant gene expression associated with cancer. However, a role for epigenetics in physical DNA changes, such as chromosome rearrangements, is less obvious, and certainly less well understood. A growing body of evidence suggests that epigenetics may play a role in many of the steps of aberrant chromosome recombination, especially chromosome translocations, associated with cancers such as acute leukemias.
Collapse
|