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US4328207A Expired / Lapsed US ⏱️ 0.0 years remaining

Process for preparing mouse interferon

Assignee: Individual
•
Filing: 1979-12-27
•
Granted: 1982-05-04
•
Expires: 1999-12-27
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Abstract

Abstract The present invention relates to a process which is easily applicable for industrial production of mouse interferon. Particularly, the present invention relates to a process based on the discovery that a large amount and high activity of mouse interferon is obtained by transplanting established mouse tumor cells to other warm-blooded animal body or inoculating the cells in a culture medium charged in a filter-membrane-interposed diffusion chamber which is designed and fitted up to or in the animal body so that its nutrient body fluid feeds the cells, multiplying the transplanted or inoculated cells in the warm-blooded animal body or the diffusion chamber utilizing said body fluid, and exposing the multiplied cells to the action of interferon inducer in vitro or in vivo.

Inventors

  • 👤 Kaname Sugimoto

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 23:05
CPC Classifications
C; C07; C07K; C07K14/00; C07K14/435; C07K14/52; C07K14/555; Y; Y10; Y10S; Y10S435/00; Y10S435/811

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 94 words
In the process for producing mouse specific interferon comprising cultivating established mouse cells, exposing the resultant cells to the action of an interferon inducer to induce interferon, and collecting and purifying the interferon, the improvement wherein the established mouse cells are established mouse lymphoblastoid cell lines selected from the group consisting of L 5178 Y cell, L 1210 cell, OUMS-2 cell and JTC-11 cell, and wherein said cultivating step comprises transplanting the established mouse tumor cells into another non-mouse warm-blooded laboratory animal body, and wherein said exposing step is in vivo or in vitro.
Claim 2
Dependent Claim 94 words
In the process for producing mouse specific interferon comprising cultivating established mouse cells, exposing the resultant cells to the action of an interferon inducer to induce interferon, and collecting and purifying the interferon, the improvement wherein the established mouse cells are established mouse lymphoblastoid cell lines selected from the group consisting of L 5178 Y cell, L 1210 cell, OUMS-2 cell and JTC-11 cell, and wherein said cultivating step comprises transplanting the established mouse tumor cells into another non-mouse warm-blooded laboratory animal body, and wherein said exposing step is in vivo or in vitro.
Claim 3
Dependent Claim 16 words
A process according to claim 1 in which the non-mouse warm-blooded laboratory animal is a mammalian.
Claim 4
Dependent Claim 28 words
A process according to claim 1, wherein said non-mouse warm-blooded laboratory animal is a bird, dog, cat, monkey, goat, pig, bovine, rabbit, horse, guinea pig, rat or hamster.

References Cited (Backward Citations)

US4276282A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1985-05-03 1985-11-02 1986-05-04 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1989-05-03 1989-11-02 1990-05-04 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1993-05-03 1993-11-02 1994-05-04 $7700.00 Window Closed / Lapsed

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