Premium
Genetic analysis of sorted Hodgkin and Reed‐Sternberg cells using comparative genomic hybridization
Author(s) -
Ohshima Koichi,
Ishiguro Masako,
Ohgami Akiko,
Sugihara Midori,
Haraoka Seiji,
Suzumiya Junji,
Kikuchi Masahiro
Publication year - 1999
Publication title -
international journal of cancer
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.475
H-Index - 234
eISSN - 1097-0215
pISSN - 0020-7136
DOI - 10.1002/(sici)1097-0215(19990719)82:2<250::aid-ijc16>3.0.co;2-l
Subject(s) - comparative genomic hybridization , nodular sclerosis , reed–sternberg cell , biology , microbiology and biotechnology , polymerase chain reaction , metaphase , oligonucleotide , in situ hybridization , dna , cytogenetics , genetics , lymphoma , immunology , chromosome , gene , gene expression , hodgkin lymphoma
Hodgkin and Reed‐Sternberg (H and RS) cells are generally considered to be the neoplastic cells of Hodgkin's disease (HD); however, such cells are found only in a minority of HD lesions. Very few data have so far been published on the cyogenetic abnormalities in HD. An analysis of unknown genetic aberrations has only recently become possible through the use of comparative genomic hybridization (CGH), which is based on the competitive binding of tumor and control DNA to metaphase chromosomes. In order to exclude the reaction of non‐tumor cells, we used 100 sorted H‐RS cells as the tumor DNA, then 100 sorted reactive T cells or B cells as the control DNA. We obtained the amplified DNA, using degenerate oligonucleotide‐primed polymerase chain reaction (DOP‐PCR). In addition, to confirm whether or not the lymphocytes in the background were reactive, we performed CGH with 100 sorted B cells and 100 sorted T cells. CGH was thus performed on 9 HDs, including 6 cases of mixed‐cellularity (MC) sub‐type and 3 cases of nodular‐sclerosis (NS) sub‐type. CGH of the B and T cells showed no genetic changes in any cases. In contrast, CGH of H‐RS cells revealed both gains and losses of DNA in all 9 cases, and multiple changes were also observed. In situ hybridization showed an Epstein‐Barr‐virus infection in 5 cases of MC; however, no definite relationship was observed between the EBV infection and genetic changes. The most commonly observed genetic aberrations were a loss on 16q11/21 in 6 cases, a gain on 1p13 in 5 cases, and a gain on 7q35/36 in 5 cases. The large number of chromosomal alterations in HD suggests, therefore, that an increased degree of genetic instability play a role in the formation of H‐RS cells. Int. J. Cancer 82:250–255, 1999. © 1999 Wiley‐Liss, Inc.