The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 04, 2002
Filed:
May. 12, 2000
Adhip P. N. Majumdar, W. Bloomfield, MI (US);
Dept. of Veterans Affairs, Washington, DC (US);
Abstract
A cDNA fragment clone of 1583 base pairs with 90-95% sequence homology to the mouse EGFR and a truncated rat EGFR is described. The isolated cDNA is termed ERRP (EFG-Receptor Related Protein). In Northern-blot analysis with poly A+ RNA from different rat tissues, ERRP cDNA hybridized strongly to a mRNA transcript of about 1.8 kb. Maximal expression was noted in the small intestine, followed by colon, liver, gastric mucosa and other tissues. Transfection of ERRP cDNA in HCT-116 cells, a colon cancer cell line, markedly inhibits proliferation in monolayer and in soft agar and attenuates EGF-R tyrosine kinase activity. Transfection of ERRP in HCT-116 also delays tumor growth in SCID mice injected with these cells compared to the vector-transfector control cells. On the other hand, proliferation of the vector-transfected control, but not ERRP transfected HCT cells could be stimulated by TGF-&agr; (10 M and 10 M). The ERRP cDNA represents a new member of the EGFR gene family, and its protein product plays a key role in modulating the function of EGFR.