title: Abnormal expression of apoptosis-related genes in haematological malignancies: overexpression of MYC is poor prognostic sign in mantle cell lymphoma.
abstract: The expression of apoptosis-related genes BCL2, BAX, BCL2L1, BCL2A1, MCL1, DAPK1 and MYC was studied by quantitative real-time polymerase chain reaction on total RNA samples from patients with acute lymphoblastic leukaemia (ALL, n = 16), acute myeloid leukaemia (AML, n = 27), chronic myeloid leukaemia (CML, n = 12), mantle cell lymphoma (MCL, n = 19) and chronic lymphoid leukaemia (CLL, n = 32). BCL2, BAX, BCL2A1, MCL1, DAPK1 and MYC were overexpressed in all patient groups. BCL2L1 was underexpressed in CLL and CML, but not in AML, ALL and MCL. MCL1 levels were significantly higher in CD13 and CD33-positive ALL, and in CD56-positive AML samples. BCL2, BCL2L1, BCL2A1 and MCL1 were overexpressed and DAPK1 was underexpressed in CLL samples with a 11q23 deletion. MYC overexpression was significantly associated with shorter overall survival in MCL (P < 0.01). AML patients with a normal karyotype showed a higher frequency of BCL2A1 overexpression (P < 0.001) than those with an abnormal karyotype.
authors.affiliation: Department of Pathology and Medical Genetics, Haartman Institute, University of Helsinki, Helsinki, Finland.
authors.forename: Bálint
authors.initials: B
authors.lastname: Nagy
authors.forename: Tuija
authors.initials: T
authors.lastname: Lundán
authors.forename: Marcelo L
authors.initials: ML
authors.lastname: Larramendy
authors.forename: Yan
authors.initials: Y
authors.lastname: Aalto
authors.forename: Ying
authors.initials: Y
authors.lastname: Zhu
authors.forename: Tarja
authors.initials: T
authors.lastname: Niini
authors.forename: Henrik
authors.initials: H
authors.lastname: Edgren
authors.forename: Anna
authors.initials: A
authors.lastname: Ferrer
authors.forename: Juhani
authors.initials: J
authors.lastname: Vilpo
authors.forename: Erkki
authors.initials: E
authors.lastname: Elonen
authors.forename: Kim
authors.initials: K
authors.lastname: Vettenranta
authors.forename: Kaarle
authors.initials: K
authors.lastname: Franssila
authors.forename: Sakari
authors.initials: S
authors.lastname: Knuutila
mesh_terms: D000328:Adult; D000368:Aged; D017209:Apoptosis / Q000235:genetics*; D014408:Biomarkers, Tumor / Q000235:genetics*; D002648:Child; D002675:Child, Preschool; D002880:Chromosomes, Human, Pair 11 / Q000235:genetics; D005260:Female; D005500:Follow-Up Studies; D017353:Gene Deletion; D015870:Gene Expression; D016259:Genes, myc; D006801:Humans; D016130:Immunophenotyping; D007938:Leukemia / Q000235:genetics* / Q000276:immunology / Q000473:pathology; D020522:Lymphoma, Mantle-Cell / Q000235:genetics* / Q000276:immunology / Q000473:pathology; D008297:Male; D008875:Middle Aged; D011379:Prognosis; D020133:Reverse Transcriptase Polymerase Chain Reaction; D015996:Survival Rate
chemical_list: D014408:Biomarkers, Tumor