Cytogenetic analysis of unstimulated cultures from a female patient with chronic B-cell leukemia (CLL) revealed three cytogenetically distinct clones, suggesting that the patient's leukemia was oligoclonal. Immunoglobulin heavy chain gene rearrangement studies revealed I germline and 4 rearranged ba
Telomeric association of chromosomes in B-cell lymphoid leukemia
โ Scribed by Peter H. Fitzgerald; Christine M. Morris
- Book ID
- 104707328
- Publisher
- Springer
- Year
- 1984
- Tongue
- English
- Weight
- 801 KB
- Volume
- 67
- Category
- Article
- ISSN
- 0340-6717
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โฆ Synopsis
About 20% of leukemic bone marrow cells from each of two patients with B-cell lymphoid leukemias showed apparent translocations which appeared to be the result of telomeric association. In one patient, whole chromosomes were associated telomere to telomere in pairs; in the other patient, telomeres of whole chromosomes were associated with breakpoints located close to the proximal or distal ends of the heterochromatic band 1q12. Repeated base sequences, particularly (CA)n sequences, are believed to be the basis of telomere pairing, and likewise repeated base sequences of heterochromatin may explain the association of 1qh and telomeres. Telomeric association may be considered as a potential origin of new stable cytogenetic combinations that have a role in oncogene transposition and tumor etiology.
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Telomeric associations (TAs) represent an important cytogenetic marker of human tumor cells. It has been thought that the primary cause of TAs is telomere shortening. However, we report here a surprising aspect of telomere maintenance in primary Chinese hamster embryonic (CHE) cells: relatively high
## Abstract To study chromosome complements of chronic lymphocytic leukemia cells, six EpsteinโBarr virusโtransformed lymphoid lines were established from two patients with this disease who were heterozygous for the Xโchromosomeโlinked enzyme glucoseโ6โphosphate deโhydrogenase (G6PD). Immunoglobuli
Telomeric associations were determined in bone marrow preparations from a patient with 6-cell prolymphocytic leukaemia and a clonal isochromosome of the long arm of chromosome 17. Thirteen associations involved 16 chromosome arms, with preferential involvement of the short arm of chromosome 19 and t