Abstract:
PROBLEM TO BE SOLVED: To provide an effective and a highly selective method for cleaning an autograft which may contain neoplastic cells. SOLUTION: The present invention relates to a method for removing ras-mediated neoplastic cells from a mixed cellular composition by infecting the mixed cellular composition with reovirus selectively dissolving the ras-mediated neoplastic cells. The method can be used to remove mixed or spontaneous neoplastic cells from a widely mixed cellular composition since many neoplastic cells relate to the activated ras-mediated ras routes. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a highly selective method with considerable yield for cleaning an autologous graft with a possibility of containing neoplastic cells. SOLUTION: The invention relates to a method, for example, selectively removing neoplastic cells from a mixed cellular composition by using a virus which can selectively kill neoplastic cell. It is possible that a variety of viruses selectively remove neoplastic cells but do not remove normal cells. Reoviruses selectively kill ras-activated neoplastic cells, a virus expressing wild type p53 gene is selective to neoplastic cell having dysfunctional p53, either interferon-susceptible viruses is selective to neoplastic cells having a destroyed interferon channel. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a very selective method that attains a considerable yield for purifying autograft that possibly includes neoplastic cells. SOLUTION: The invention relates to a method for removing ras-mediated neoplastic cells from a mixed cellular composition by infecting the mixed cellular composition with a reovirus that selectively infect and kill ras-mediated neoplastic cells. Since a variety of viruses relate to the activated ras route, this invention can be used for removing mixed, autogenetic neoplastic cells from a large range of mixed cellular compositions. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To solve the problem of large, biological agents for treatment of neoplasia limited by intratumoral interstitial pressure and/or reduced vascular permeability.SOLUTION: Provided herein are methods of treating a proliferative disorder in a subject comprising decreasing interstitial pressure and/or increasing vascular permeability in the subject and administering to the subject a tumor lysis virus. Such methods improve the tumor lysis virus delivery and distribution.
Abstract:
PROBLEM TO BE SOLVED: To provide a method for increasing the sensitivity of neoplastic cells to chemotherapeutic reagents by using reovirus, and a method of treating proliferative disorders using reovirus and chemotherapeutic agents.SOLUTION: There is provided a method for sensitizing neoplastic cells which includes following steps of: (a) administering an effective amount of the reovirus to the neoplastic cells; and (b) administering an effective amount of the chemotherapeutic agent to the cells. There is provided a method for treating a subject with proliferative disorders and comprising neoplastic cells refractory to the chemotherapeutic agent, which includes steps of: (a) administering an effective amount of the reovirus to the subject under conditions which result in infection of the neoplastic cells by the reovirus; and (b) administering an effective amount of the chemotherapeutic reagent to the subject.
Abstract:
PROBLEM TO BE SOLVED: To provide a rapid and effective method of producing a reovirus in cultured cells for production of reovirus suitable for clinical administration. SOLUTION: The present invention is directed to a method of extracting virus, particularly retrovirus, from a culture of cells. Infectious virus can be extracted from the culture with a detergent at a convenient temperature such as 25°C or 37°C to produce high virus titers. Both ionic and non-ionic detergents can be used in the present invention. In a preferable embodiment, the virus is a non-enveloped virus. The non-enveloped virus is preferably a reovirus. The present invention is applicable to any reoviruses, preferably a mammalian reovirus. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a simple and efficient method of producing a reovirus by culturing the reovirus in human embryo kidney 293 (HEK 293) cells. SOLUTION: Disclosed is a method of producing a mammalian reovirus, comprising the steps of: (a) bringing human embryo kidney 293 (HEK 293) cells into contact with a mammalian reovirus and resulting in reoviral infection of the HEK 293 cells; (b) incubating the culture of the infected cells for a period of time sufficient to allow for viral replication; and (c) harvesting the virus produced. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method for increasing the sensitivity of neoplastic cells to chemotherapeutic reagents by using reovirus, a method of treating proliferative disorders using reovirus as well as chemotherapeutic agents. SOLUTION: The present invention is a method for sensitizing neoplastic cells and comprises following two steps: step (a) wherein an effective amount of reovirus is administered to the neoplastic cells; and step (b) wherein an effective amount of chemotherapeutic agent is administered to the cells. Further, the invention is a method for treating a test object including neoplastic cells refractory to the chemotherapeutic agent and the method comprises step (a) wherein an effective amount of the reovirus is administered to the testing body under the conditions causing the infection of the neoplastic cells, and step (b) wherein an effective amount of the chemotherapeutic reagent is administered to the test object. COPYRIGHT: (C)2008,JPO&INPIT