title: [CD99 regulates redifferentiation of classical Hodgkin's lymphoma cell line L428 towards B cells].
abstract: OBJECTIVE
  To explore the effect of CD99 overexpression on the morphology and differentiation-related phenotypes of classical Hodgkin's lymphoma cell line L428 and investigate the role of CD99 gene in Hodgkin/Reed-Sternberg (HRS) cell generation and transformation.
  
  
  METHODS
  The effect of CD99 overexpression on the cell morphology was detected by HE staining and phalloidin staining. Differentiation-related protein expressions were detected by immunocytochemistry and flow cytometry after stable transfection of CD99 gene in L428 cells.
  
  
  RESULTS
  CD99 overexpression caused a decrease of the cell size and reorganization of the actin cytoskeleton in L428 cells. Upregulation of CD99 led to the loss of classical Hodgkin's lymphoma diagnosis marker CD30 and CD15 and the restoration of the B-cell makers of PAX5, CD19, CD79α, BCL-6, and CD10.
  
  
  CONCLUSIONS
  CD99 overexpression leads to redifferentiation of L428 cells towards B cells, suggesting that the loss of B-cell phenotype in classical Hodgkin's lymphoma is very likely a result of down-regulated CD99 expression.
authors: Department of Pathology, Nanfang Hospital, Southern Medical University, Guangzhou, China. balbc@fimmu.com
authors: Xinhua
authors: X
authors: Zhou
authors: Xueping
authors: X
authors: Huang
authors: Zuoping
authors: Z
authors: Huang
authors: Zhiqiang
authors: Z
authors: Wang
authors: Tong
authors: T
authors: Zhao
mesh_terms: D000071443:12E7 Antigen; D015703:Antigens, CD / Q000235:genetics*; D001402:B-Lymphocytes / Q000166:cytology*; D015815:Cell Adhesion Molecules / Q000235:genetics*; D002454:Cell Differentiation; D045744:Cell Line, Tumor; D015972:Gene Expression Regulation, Neoplastic; D006689:Hodgkin Disease / Q000235:genetics* / Q000473:pathology; D006801:Humans
chemical_list: D000071443:12E7 Antigen; D015703:Antigens, CD; C061828:CD99 protein, human; D015815:Cell Adhesion Molecules