title: Differential expression of cyclin D1 in mantle cell lymphoma and other non-Hodgkin's lymphomas.
abstract: Mantle-cell lymphomas are associated with a characteristic chromosomal translocation, t(11;14)(q13;q32). This translocation involves rearrangement of the bcl-1 proto-oncogene from chromosome 11 to the immunoglobulin heavy chain gene on chromosome 14, resulting in an overexpression of cyclin D1 mRNA (also known as bcl-1 and PRAD1). In the current study performed on paraffin-embedded tissue, cyclin D1 mRNA could be detected in 23 of 24 mantle-cell lymphomas by reverse transcription polymerase chain reaction (RT-PCR) whereas only 9 of 24 demonstrated a t(11;14) by PCR. However, we also found that cyclin D1 mRNA could be detected in the majority (11 of 17, 65%) of non-mantle-cell lymphomas and in a minority of atypical lymphoid hyperplasias (3 of 7, 43%). Cyclin D1 mRNA expression was not observed in floridly reactive lymph nodes (0 of 9) or in unstimulated lymph nodes (0 of 20), suggesting that it is a sensitive adjunct marker for malignant lymphoproliferative processes, but not specific for mantle-cell lymphoma. A semiquantitative RT-PCR assay was developed that compared the ratio of cyclin D1 to the constitutively expressed gene beta2-microglobulin. Using this assay on a limited number of our specimens, cyclin D1 overexpression in mantle-cell lymphoma could be reliably distinguished from its expression in other non-Hodgkin's lymphomas. This assay for cyclin D1 expression, designed for formalin-fixed, paraffin-embedded tissue, was a very sensitive and specific marker for mantle-cell lymphoma.
authors.affiliation: Department of Hematologic and lymphatic Pathology, Armed Forces Institute of Pathology, Washington, DC 20306-6000, USA.
authors.forename: N S
authors.initials: NS
authors.lastname: Aguilera
authors.forename: K E
authors.initials: KE
authors.lastname: Bijwaard
authors.forename: B
authors.initials: B
authors.lastname: Duncan
authors.forename: A E
authors.initials: AE
authors.lastname: Krafft
authors.forename: W S
authors.initials: WS
authors.lastname: Chu
authors.forename: S L
authors.initials: SL
authors.lastname: Abbondanzo
authors.forename: J H
authors.initials: JH
authors.lastname: Lichy
authors.forename: J K
authors.initials: JK
authors.lastname: Taubenberger
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D018956:CD5 Antigens / Q000378:metabolism; D002880:Chromosomes, Human, Pair 11; D002883:Chromosomes, Human, Pair 14; D019938:Cyclin D1 / Q000378:metabolism*; D005260:Female; D015972:Gene Expression Regulation, Neoplastic; D006801:Humans; D007143:Immunoglobulin Heavy Chains / Q000235:genetics; D007150:Immunohistochemistry; D008228:Lymphoma, Non-Hodgkin / Q000378:metabolism*; D008297:Male; D008875:Middle Aged; D016612:Paraffin Embedding; D000090063:Proto-Oncogene Mas; D012333:RNA, Messenger / Q000378:metabolism; D020133:Reverse Transcriptase Polymerase Chain Reaction; D016707:Tissue Fixation; D014178:Translocation, Genetic; D001613:beta 2-Microglobulin / Q000378:metabolism
chemical_list: D018956:CD5 Antigens; D007143:Immunoglobulin Heavy Chains; C000715470:MAS1 protein, human; D000090063:Proto-Oncogene Mas; D012333:RNA, Messenger; D001613:beta 2-Microglobulin; D019938:Cyclin D1