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MERP1: a mammalian ependymin-related protein gene differentially expressed in hematopoietic cells.

Authors:
Claudia C Gregorio-King Janet L McLeod Fiona McL Collier Gregory R Collier Karyn A Bolton Gavin J Van Der Meer Jim Apostolopoulos Mark A Kirkland

Gene 2002 Mar;286(2):249-57

Stem Cell Laboratory, The Douglas Hocking Research Institute, Barwon Health, The Geelong Hospital, Geelong, VIC, 3220, Australia.

We have utilized differential display polymerase chain reaction to investigate the gene expression of hematopoietic progenitor cells from adult bone marrow and umbilical cord blood. A differentially expressed gene was identified in CD34+ hematopoietic progenitor cells, with low expression in CD34- cells. We have obtained the full coding sequence of this gene which we designated human mammalian ependymin-related protein 1 (MERP1). Expression of MERP1 was found in a variety of normal human tissues, and is 4- and 10-fold higher in adult bone marrow and umbilical cord blood CD34+ cells, respectively, compared to CD34- cells. Additionally, MERP1 expression in a hematopoietic stem cell enriched population was down-regulated with proliferation and differentiation. Conceptual translation of the MERP1 open reading frame reveals significant homology to two families of glycoprotein calcium-dependant cell adhesion molecules: ependymins and protocadherins.

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http://dx.doi.org/10.1016/s0378-1119(02)00434-1DOI Listing
March 2002

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