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:
Feb. 15, 1994
Filed:
Jun. 24, 1992
Claus-Jens W Doersen, Cincinnati, OH (US);
Robert J Isfort, Cincinnati, OH (US);
The Procter & Gamble Company, Cincinnati, OH (US);
Abstract
The present invention relates to a novel cell line isolated from a rat osteosarcoma having the following characteristics: A) a non-expressed p53 protein; B) a normal RB-1 gene as compared to a non-tumorigenic Sprague-Dawley rat cell control; C) a normal c-fos gene as compared to a non-tumorigenic Sprague-Dawley rat cell control; D) a 50-fold amplified c-myc gene as compared to a non-tumorigenic Sprague-Dawley rat cell control; E) a monolayer MATRIGEL.TM. growth pattern; F) tumorigenic in nude mice; G) normal alkaline phosphatase activity; H) an ability to be serially propagated greater than fifty population doublings; I) an ability to produce a growth factor selected from the group consisting of: 1) a mesenchymal inhibitory growth factor; 2) a non-heparin binding mitogenic growth factor; 3) a first heparin binding mitogenic growth factor; 4) a second heparin binding mitogenic growth factor; 5) a third heparin binding mitogenic growth factor; and 6) a fourth heparin binding mitogenic growth factor. The present invention also relates to growth factors produced by the novel cell line. This invention also relates to a process for producing such growth factors.