title: Cytogenetic investigations of chronic lymphocytic leukemia.
abstract: This study aimed to determine which culture method would yield the highest culture success rate, mitotic index, banding resolution, and abnormality rate in investigation of patients with chronic lymphocytic leukemia (CLL). A range of culture techniques for conventional cytogenetic (CC) analyses was compared: 24-hour unstimulated, 72 hours incubation with additional fetal calf serum, 72 hours stimulation with interleukin 4, 72 hours stimulation with lipopolysaccharide (LPS), 72 hours stimulation with TPA (12-O-tetradecanoylphorbol 13-acetate), and 72 hours stimulation with CpG-oligonucleotide DSP30 + Interleukin-2 (IL-2). CC abnormality rates were also compared to fluorescence in situ hybridization (FISH) results using probes for CLL (LSI D13S319/13q34/CEP 12: LSI ATM/p53). Forty-five samples from 24 patients (consisting of 11 newly diagnosed and 13 previously diagnosed patients) were included. For CC, a 100.0% culture success rate was achieved (n = 45) by means of an EDTA (ethylenediaminetetraacetic acid) peripheral blood sample with an associated 62.5% CC abnormality rate (n = 24). FISH detected an abnormality rate of 75.0% (n = 24). The combined CC and FISH abnormality rate was 87.5% (n = 24). This study demonstrates that CC that uses TPA and DSP30 + IL-2 on EDTA peripheral blood is effective in the investigation of CLL and may be used as a supplement to FISH studies.
authors.affiliation: Pathology Department, Royal Hobart Hospital, Hobart, Tasmania, 7000, Australia. cathy.wren@dhhs.tas.gov.au
authors.forename: Catherine
authors.initials: C
authors.lastname: Wren
authors.forename: Helen
authors.initials: H
authors.lastname: Moriarty
authors.forename: Katherine
authors.initials: K
authors.lastname: Marsden
authors.forename: Elizabeth
authors.initials: E
authors.lastname: Tegg
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D018929:Cell Culture Techniques; D049109:Cell Proliferation / Q000187:drug effects; D020732:Cytogenetic Analysis / Q000379:methods; D005260:Female; D006801:Humans; D007376:Interleukin-2 / Q000494:pharmacology; D007621:Karyotyping / Q000379:methods; D015451:Leukemia, Lymphocytic, Chronic, B-Cell / Q000175:diagnosis* / Q000235:genetics*; D008297:Male; D008875:Middle Aged; D008940:Mitotic Index; D009841:Oligonucleotides / Q000494:pharmacology; D013755:Tetradecanoylphorbol Acetate / Q000494:pharmacology; D014407:Tumor Cells, Cultured
chemical_list: C539572:CpG-ODN DSP30; D007376:Interleukin-2; D009841:Oligonucleotides; D013755:Tetradecanoylphorbol Acetate