Mechanisms of Whole Chromosome Gains in Tumors - Many Answers to a Simple Question.
(2011) In Cytogenetic and Genome Research 133. p.190-201- Abstract
- Whole chromosome gain is the most common type of gross genomic abnormality observed in human tumors. It is particularly frequent in lympho-haematopoietic and embryonic neoplasms, where trisomies and tetrasomies are typically present together with few or no other cytogenetic imbalances, resulting in hyperdiploid chromosome numbers. Despite the high prevalence of whole chromosome gains in neoplastic cells, their mechanism of origin remains disputed. Here, 4 potential models for the generation of whole chromosome gains are reviewed: (1) loss of chromosomes from the tetraploid level, (2) sequential sister chromatid non-disjunction, (3) multipolar mitosis coupled to sister chromatid non-disjunction, and (4) multipolar mitosis coupled to... (More)
- Whole chromosome gain is the most common type of gross genomic abnormality observed in human tumors. It is particularly frequent in lympho-haematopoietic and embryonic neoplasms, where trisomies and tetrasomies are typically present together with few or no other cytogenetic imbalances, resulting in hyperdiploid chromosome numbers. Despite the high prevalence of whole chromosome gains in neoplastic cells, their mechanism of origin remains disputed. Here, 4 potential models for the generation of whole chromosome gains are reviewed: (1) loss of chromosomes from the tetraploid level, (2) sequential sister chromatid non-disjunction, (3) multipolar mitosis coupled to sister chromatid non-disjunction, and (4) multipolar mitosis coupled to incomplete cytokinesis. Each of these mechanisms may in theory result in the generation of hyperdiploid neoplastic clones, but none of them were single-handedly able to reproduce the scenario of chromosome copy number alterations in tumors when cell populations resulting from these models were simulated in silico and compared to published cytogenetic data. To develop models for the generation of whole chromosome gains further, it is critical to improve our knowledge of the principles of clonal selection in tumors and of the baseline rate of chromosome segregation errors in human cells. To illustrate this, a model combining multipolar mitosis coupled to incomplete cytokinesis with a low rate of baseline sister chromatid non-disjunction was shown readily to reproduce copy number distributions in hyperdiploid karyotypes from human tumors. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1756825
- author
- Gisselsson Nord, David LU
- organization
- publishing date
- 2011
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Cytogenetic and Genome Research
- volume
- 133
- pages
- 190 - 201
- publisher
- Karger
- external identifiers
-
- wos:000289679800013
- pmid:21124017
- scopus:79954578030
- pmid:21124017
- ISSN
- 1424-859X
- DOI
- 10.1159/000322480
- language
- English
- LU publication?
- yes
- id
- 900db4f2-2ceb-4d5e-a3a0-5d6b97fd9e01 (old id 1756825)
- alternative location
- http://www.ncbi.nlm.nih.gov/pubmed/21124017?dopt=Abstract
- date added to LUP
- 2016-04-04 08:56:55
- date last changed
- 2022-01-29 08:01:13
@article{900db4f2-2ceb-4d5e-a3a0-5d6b97fd9e01,
abstract = {{Whole chromosome gain is the most common type of gross genomic abnormality observed in human tumors. It is particularly frequent in lympho-haematopoietic and embryonic neoplasms, where trisomies and tetrasomies are typically present together with few or no other cytogenetic imbalances, resulting in hyperdiploid chromosome numbers. Despite the high prevalence of whole chromosome gains in neoplastic cells, their mechanism of origin remains disputed. Here, 4 potential models for the generation of whole chromosome gains are reviewed: (1) loss of chromosomes from the tetraploid level, (2) sequential sister chromatid non-disjunction, (3) multipolar mitosis coupled to sister chromatid non-disjunction, and (4) multipolar mitosis coupled to incomplete cytokinesis. Each of these mechanisms may in theory result in the generation of hyperdiploid neoplastic clones, but none of them were single-handedly able to reproduce the scenario of chromosome copy number alterations in tumors when cell populations resulting from these models were simulated in silico and compared to published cytogenetic data. To develop models for the generation of whole chromosome gains further, it is critical to improve our knowledge of the principles of clonal selection in tumors and of the baseline rate of chromosome segregation errors in human cells. To illustrate this, a model combining multipolar mitosis coupled to incomplete cytokinesis with a low rate of baseline sister chromatid non-disjunction was shown readily to reproduce copy number distributions in hyperdiploid karyotypes from human tumors.}},
author = {{Gisselsson Nord, David}},
issn = {{1424-859X}},
language = {{eng}},
pages = {{190--201}},
publisher = {{Karger}},
series = {{Cytogenetic and Genome Research}},
title = {{Mechanisms of Whole Chromosome Gains in Tumors - Many Answers to a Simple Question.}},
url = {{http://dx.doi.org/10.1159/000322480}},
doi = {{10.1159/000322480}},
volume = {{133}},
year = {{2011}},
}