title: Regulation of the CD56 promoter and its association with proliferation, anti-apoptosis and clinical factors in multiple myeloma.
abstract: Multiple myeloma (MM) is an incurable B-cell malignancy characterised by uncontrolled growth and accumulation of malignant plasma cells in the bone marrow. Aberrant expression of CD56 in patients with MM is thought to contribute to a worsened disease course and metastasis. We therefore investigated the regulation of the CD56 promoter in relation to typical clinical factors. We used qPCR and FACS to measure the expression levels of CD56, and potential regulatory factors in patients with MM and related these with MM progression/prognosis. The transcription factors BTBD3, Pax5, RUNX1 and MMSET were positively associated with CD56 expression, as was CYCLIN D1, which is involved in disease progression, anti-apoptosis and proliferation. RUNX1 was negatively associated with the survival of stem-cell transplanted patients. Our findings propose four potential activators of the CD56 promoter and for CD56 to be involved in proliferation and anti-apoptosis, leading to disease progression in MM.
authors.affiliation: Department of Haematology 54P4, Herlev University Hospital of Copenhagen, Herlev, Denmark. tdamgaard@sund.ku.dk
authors.forename: Tina
authors.initials: T
authors.lastname: Damgaard
authors.forename: Lene M
authors.initials: LM
authors.lastname: Knudsen
authors.forename: Inger Marie S
authors.initials: IM
authors.lastname: Dahl
authors.forename: Peter
authors.initials: P
authors.lastname: Gimsing
authors.forename: Marianne
authors.initials: M
authors.lastname: Lodahl
authors.forename: Thomas
authors.initials: T
authors.lastname: Rasmussen
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D017209:Apoptosis; D019002:CD56 Antigen / Q000235:genetics* / Q000378:metabolism*; D049109:Cell Proliferation; D019938:Cyclin D1 / Q000378:metabolism; D005260:Female; D005434:Flow Cytometry; D015972:Gene Expression Regulation, Neoplastic / Q000235:genetics*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009101:Multiple Myeloma / Q000235:genetics / Q000378:metabolism* / Q000473:pathology*; D016133:Polymerase Chain Reaction; D011401:Promoter Regions, Genetic / Q000235:genetics*; D012333:RNA, Messenger / Q000235:genetics; D015996:Survival Rate; D014157:Transcription Factors / Q000235:genetics / Q000378:metabolism
chemical_list: D019002:CD56 Antigen; D012333:RNA, Messenger; D014157:Transcription Factors; D019938:Cyclin D1