title: Reduction of CD147 surface expression on primary T cells leads to enhanced cell proliferation.
abstract: BACKGROUND
  CD147 is a ubiquitously expressed membrane glycoprotein that has numerous functional associations in health and disease. However, the molecular mechanisms by which CD147 participates in these processes are unclear. Establishing physiologically relevant silencing of CD147 in primary T cells could provide clues essential for elucidating some aspects of CD147 biology. To date, achieving the knockdown of CD147 in primary T cells has remained elusive.
  
  
  OBJECTIVE
  Utilizing RNA interference and the Nucleofector transfection system, we were able to reduce the expression of CD147 in primary T cells. Comparison of basic functions, such as proliferation and CD25 expression, were then made between control populations and populations with reduced expression.
  
  
  RESULTS
  Up-regulation of CD147 was found upon T-cell activation, indicating a role in T-cell responses. To better understand the possible importance of this up-regulation, we knocked down the expression of CD147 using RNA interference. When compared to control populations the CD147 knockdown populations exhibited increased proliferation. This alteration of cell proliferation, however, was not linked to a change in CD25 expression.
  
  
  CONCLUSIONS
  We achieved reduction of CD147 surface expression in primary T cells by siRNA-mediated gene silencing. Our results point to CD147 having a possible negative regulatory role in T cell-mediated immune responses.
authors: Division of Clinical Immunology, Department of Medical Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai 50200, Thailand.
authors: Brian
authors: B
authors: Biegler
authors: Watchara
authors: W
authors: Kasinrerk
mesh_terms: D051926:Basigin / Q000096:biosynthesis / Q000235:genetics / Q000276:immunology*; D049109:Cell Proliferation; D005260:Female; D055785:Gene Knockdown Techniques; D006801:Humans; D007111:Immunity, Cellular / Q000502:physiology*; D053645:Interleukin-2 Receptor alpha Subunit / Q000096:biosynthesis / Q000235:genetics / Q000276:immunology; D019169:Jurkat Cells; D008213:Lymphocyte Activation / Q000502:physiology*; D008297:Male; D034622:RNA Interference; D013601:T-Lymphocytes / Q000166:cytology / Q000276:immunology* / Q000378:metabolism; D015854:Up-Regulation / Q000235:genetics / Q000276:immunology*
chemical_list: C497886:BSG protein, human; C508017:IL2RA protein, human; D053645:Interleukin-2 Receptor alpha Subunit; D051926:Basigin