CD44CR1-GFP Reporter Plasmid

This GFP reporter plasmid expresses CD44CR1, a noncoding sequence upstream of the CD44 locus.


  • Expresses CD44CR1 with GFP reporter.
  • CD44CR1 has been identified as a novel cis-element of CD44, containing 717 bp (in human) and 715 bp (in mouse) of evolutionarily conserved noncoding DNA, located approximately 95 kb upstream of the CD44 transcription start site.
  • This cis-element has the ability to direct reporter gene expression in breast cancer cells in a cell type specific manner.
  • CD44CR1 and its interacting transcription factors play an important role in regulating CD44 expression in breast cancer and breast cancer stem cells (BCSCs).

CD44 is a glycoprotein that is ubiquitously expressed in most cells throughout the body and involved in cell adhesion, migration, differentiation, and survival. It has been found to be up regulated in various types of cancer stem cells, such as those of the prostate, pancreas, brain, and blood. CD44 overexpression in cancer stem cells leads to high resistance to chemotherapy and radiation treatment and an increase in metastasis.

From the laboratory of Li Cai, PhD, Rutgers University.

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Catalog Number Product DataSheet Size AVAILABILITY Price Qty
CD44CR1-GFP Reporter Plasmid
Spotted on filter paper In stock
Regular Price:$80.00
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Product Type: Plasmid
Gene/insert name: CD44CR1 ? a noncoding sequence upstream of CD44 locus
Accession ID: P16070
Antibiotic Resistance: Ampicillin
Fusion Tag(s): GFP
Format: Liquid/spotted on filter paper
Grow in E. coli at 37 C: Yes
Selectable markers: GFP
Cloning Site 5': SpeI
Cloning Site 3': FseI
Insert Size: 715 bp
Vector Backbone and Size: basal beta-globin promoter (bGP-GFP)
High or low copy: High
Storage: -20C
Shipped: Ambient temperature


CR1 directs reporter GFP expression in breast cancer cell lines.

Conserved region was tested for the ability to direct reporter geneexpression by transfecting breast cancer cell lines with CD44CR1-bGP-GFP construct (CD44CR1-GFP). Nuclei were stained with Hoechst 33342. (A–C) GFP expression in all three cell lines resulted from transfection of a positive control construct (CAG-GFP). (D–F) No GFP expression was detected from transfection of a negative control construct with a conserved region from NeuroD1gene. GFP expression from CR1 can be seen in MDA-MB-231 and SUM159 cells (G–H). However, no expression is seen in MCF7 cells (I).

Adapted from: Smith SM, Cai L. PLoS ONE 7(11): e50867.

From the laboratory of Li Cai, PhD, Rutgers University.
  1. Smith SM, Cai L. Cell Specific CD44 Expression in Breast Cancer Requires the Interaction of AP-1 and NFkB with a Novel cis-Element. (2012) PLoS ONE 7(11): e50867.

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