ROBERT WILLIAM ISFORT, M.D.
Osteopathic Medicine at Montgomery Rd, Cincinnati, OH

5286643, Feb 15, 1994

Jun 24, 1992

7/903431

Robert J. Isfort - Cincinnati OH

The Procter & Gamble Company - Cincinnati OH

C12N 506, C12P 2102

4352402

The present invention relates to a novel cell line isolated from a rat osteosarcoma wherein the cell line has the following characteristics: a) a normal p53 gene; b) a normal RB-1 gene; c) a normal c-myc gene; d) a normal c-fos gene; e) a deregulated immediate early gene response; f) a canalicular network MATRIGEL. TM. growth pattern; g) poorly tumorigenic in congenitally athymic mice; h) no alkaline phosphatase activity; i) an ability to produce one or more of the following growth factors: 1) a non-heparin binding growth factor, 2) a first heparin binding growth factor, 3) a second heparin binding growth factor, and 4) a third heparin binding growth factor; and j) an ability to be serially propagated greater than sixty population doublings. The present invention also relates to growth factors having the characteristics of growth factors isolated from the rat osteosarcoma cell line. The present invention further relates to a process for producing such growth factors comprising growing the cells of the present invention in a culture medium and recovering the growth factors.

5286642, Feb 15, 1994

Jun 24, 1992

7/903429

Robert J. Isfort - Cincinnati OH

The Procter & Gamble Company - Cincinnati OH

C12N 506, C12P 2102

4352402

The present invention relates to a novel cell line isolated from a rat osteosarcoma cell line has the following characteristics: a) a non-expressed p53 protein; b) a normal RB-1 gene; c) a 1O. times. amplified c-myc gene; d) a normal c-fos gene; e) a deregulated immediate early gene response; f) a canalicular network MATRIGEL. TM. growth pattern; g) tumorigenic in congenitally athymic mice; h) no alkaline phosphatase activity; i) an ability to produce one or more of the following growth factors: 1) an osteoblastic differentiation 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, and 5) a third heparin binding mitogenic growth factor; and an ability to be serially propagated greater than sixty population doublings. The present invention also relates to growth factors having the characteristics of growth factors isolated from the rat osteosarcoma cell line. The present invention further relates to a process for producing such growth factors.

5288628, Feb 22, 1994

Jun 24, 1992

7/903436

Robert J. Isfort - Cincinnati OH

The Procter & Gamble Company - Cincinnati OH

C12N 506, C12P 2102

4352402

The present invention relates to a novel cell line isolated from a rat osteosarcoma wherein the cell line has the following characteristics: a) a mutated p53 system, b) a normal RB-1 gene as compared to a non-tumorigenic Sprague-Dawley rat cell control, c) a normal c-myc gene as compared to a non-tumorigenic Sprague-Dawley rat cell control, d) a normal c-fos gene as compared to a non-tumorigenic Sprague-Dawley rat cell control, e) a deregulated immediate early gene response, f) a canalicular network MATRIGEL. TM. , growth pattern, g) tumorigenic in nude mouse, h) no alkaline phosphatase activity, i) an ability to produce one or more growth factors selected from the group consisting of: 1) an osteoblastic differentiation 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, and 5) a third heparin binding mitogenic growth factor, and j) an ability to be serially propagated greater than sixty population doublings. The present invention also relates to growth factors having the characteristics of growth factors isolated from the rat osteosarcoma cell line. The present invention also relates to a process for producing a growth factor comprising: a) growing an osteosarcoma cell line in a culture medium, and b) recovering the growth factor from the medium.

5292656, Mar 8, 1994

Jun 24, 1992

7/903435

Robert J. Isfort - Cincinnati OH

The Procter & Gamble Company - Cincinnati OH

C12N 506, C12P 2102

4352402

The present invention relates to a novel cell line isolated from a rat osteosarcoma wherein the cell line has the following characteristics: a) normal p53 gene as compared to a non-tumorigenic Sprague-Dawley rat cell control; b) normal RB-1 gene as compared to a non-tumorigenic Sprague-Dawley rat cell control; c) a normal c-myc gene as compared to a non-tumorigenic Sprague-Dawley rat cell control; d) a normal c-fos gene as compared to a non-tumorigenic Sprague-Dawley rat cell control; e) a deregulated immediate early gene response; f) a canalicular network MATRIGEL. TM. growth pattern; g) tumorigenic in congenitally athymic mice; h) low levels of alkaline phosphatase activity; i) an ability to produce one or more of the following growth factors: 1) a nonheparin binding growth factor, 2) a first heparin binding growth factor, 3) a second heparin binding growth factor, 4) a third heparin binding growth factor, 5) a fourth heparin binding growth factor, 6) a fifth heparin binding growth factor, 7) a sixth heparin binding growth factor; and j) an ability to be serially propagated greater than sixty population doublings. The present invention also relates to growth factors having the characteristics of growth factors isolated from the rat osteosarcoma cell line. The present invention further relates to a process for producing such growth factors comprising growing the cells of the present invention in a culture medium and recovering the growth factors.

5286645, Feb 15, 1994

Jun 24, 1992

7/903434

Robert J. Isfort - Cincinnati OH

The Procter & Gamble Company - Cincinnati OH

C12N 506, C12P 2102

4352402

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.

5264358, Nov 23, 1993

Jun 24, 1992

7/904107

Robert J. Isfort - Cincinnati OH

The Procter & Gamble Company - Cincinnati OH

C12N 500, C12N 506

4352402

The present invention relates to a novel cell line isolated from a rat osteosarcoma wherein the cell line has the following characteristics: a) a mutated p53 gene incapable of expressing p53 protein, b) a normal RB-1 gene, c) a 10-fold amplified c-myc gene, d) a normal c-fos gene, e) a deregulated immediate early gene response, f) a canalicular network MATRIGEL. TM. growth pattern, g) tumorigenic in congenitally athymic mice, h) no alkaline phosphatase activity, i) an ability to produce one or more growth factors selected from the group consisting of: 1) an osteoblastic differentiation 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, and 5) a third heparin binding mitogenic growth factor, and j) an ability to be serially propagated greater than sixty population doublings. The present invention also relates to growth factors having the characteristics of growth factors isolated from the rat osteosarcoma cell line. The present invention also relates to a process for producing a growth factor which comprises: a) growing an osteosarcoma cell line in a culture medium, and b) recovering the growth factor from the medium.

5286644, Feb 15, 1994

Jun 24, 1992

7/903432

Robert J. Isfort - Cincinnati OH

The Procter & Gamble Company - Cincinnati OH

C12N 0506, C12P 2102

4352402

The present invention relates to a novel cell line isolated from a rat osteosarcoma having the following characteristics: a) a normal p53 gene as compared to a non-tumorigenic Sprague-Dawley rat cell control; b) a normal RB-1 gene as compared to a non-tumorigenic Sprague-Dawley rat cell control; c) a normal c-myc gene as compared to a non-tumorigenic Sprague-Dawley rat cell control; d) a normal c-fos gene as compared to a non-tumorigenic Sprague-Dawley rat cell control; e) a normal immediate early gene response following mitogenic stimulation; f) a canalicular Matrigel growth pattern; g) non-tumorigenic in congenitally athymic mice; h) high levels of alkaline phosphatase activity; i) a lack of autocrine growth factor production; and j) an ability to be serially propagated greater than sixty population doublings.