Patents by Inventor Alex J. van der Eb
Alex J. van der Eb has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8236293Abstract: Cells capable of at least, in part, complementing adenovirus an adenovirus defective in E2A function. Such cells include a nucleic acid-encoding adenovirus E2A or a functional part, derivative, temperature-sensitive mutation and/or analogue thereof, integrated into the cell's genome. Methods for producing an adenovirus particle/vector with a functional deletion of E2A are also disclosed. Such methods involve providing a cell with the functionally deleted adenovirus vector, culturing the cell, and harvesting viral particles. The functional deletion may comprise a deletion in E2A. The nucleic acid-encoding E2A in the cell's genome may lack sequence overlap with the vector, preventing formation of a replication-competent adenovirus or restoration of E2A function. The adenovirus vector may further include a functional deletion in the E1-region.Type: GrantFiled: May 19, 2005Date of Patent: August 7, 2012Assignee: Crucell Holland B.V.Inventors: Frits J. Fallaux, Robert C. Hoeben, Abraham Bout, Domenico Valerio, Alex J. van der Eb, Govert Schoutten
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Publication number: 20080138901Abstract: Presented are ways to address the problem of replication-competent adenovirus in adenoviral production for use with, for example, gene therapy. Packaging cells having no overlapping sequences with a selected vector are suited for large scale production of recombinant adenoviruses. A described system produces replication-defective adenovirus. The system includes a primary cell containing a nucleotide derived from adenovirus and an isolated recombinant nucleic acid molecule for transfer into the primary cell. The isolated recombinant nucleotide is derived from an adenovirus, has at least one functional encapsidation signal and at least one functional Inverted Terminal Repeat, and lacks overlapping sequences with the nucleic acid of the cell. Otherwise, the overlapping sequences would enable homologous recombination leading to replication-competent adenovirus in the primary cell into which the isolated recombinant nucleotide is to be transferred.Type: ApplicationFiled: September 11, 2007Publication date: June 12, 2008Applicant: Crucell Holland B.V.Inventors: Frits J. Fallaux, Robert C. Hoeben, Alex J. van der Eb, Abraham Bout, Domenico Valerio
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Patent number: 6692966Abstract: The problem of replication-competent adenovirus in virus production is solved in that we have developed packaging cells that have no overlapping sequences with a new basic vector and thus, are suited for safe large scale production of recombinant adenoviruses. One of the additional problems associated with the use of recombinant adenovirus vectors is the host-defense reaction against treatment with adenovirus. Another aspect of the invention involves screening recombinant adenovirus vector lots, especially those intended for clinical use, for the presence of adenovirus E1 sequences, as this will reveal replication-competent adenovirus, as well as revertant E1 adenoviruses. It is also an aspect of the present invention to molecularly characterize the revertants that are generated in the newer helper/vector combinations.Type: GrantFiled: July 23, 2001Date of Patent: February 17, 2004Assignee: Crucell Holland B.V.Inventors: Frits J. Fallaux, Robert C. Hoeben, Abraham Bout, Domenico Valerio, Alex J. van der Eb
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Publication number: 20020187553Abstract: The problem of replication competent adenovirus in virus production is solved in that we have developed packaging cells that have no overlapping sequences with a new basic vector and thus are suited for safe large scale production of recombinant adenoviruses one of the additional problems associated with the use of recombinant adenovirus vectors is the host-defense reaction against treatment with adenovirus. Another aspect of the invention involves screening recombinant adenovirus vector lots, especially those intended for clinical use, for the presence of adenovirus E1 sequences, as this will reveal replication competent adenovirus, as well as revertant E1 adenoviruses. It is also an aspect of the present invention to molecularly characterize the revertants that are generated in the newer helper/vector combinations.Type: ApplicationFiled: July 23, 2001Publication date: December 12, 2002Inventors: Frits J. Fallaux, Robert C. Hoeben, Abraham Bout, Domenico Valerio, Alex J. van der Eb, Govert Schouten
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Publication number: 20020164802Abstract: Cells capable of at least, in part, complementing adenovirus E2A function of an adenovirus defective in E2A function. Such cells include a nucleic acid encoding adenovirus E2A or a functional part, derivative and/or analogue thereof, integrated into the cell's genome. The cell may have E2A nucleic acid derived from a temperature sensitive adenovirus. Methods for producing an adenovirus particle containing an adenovirus vector with a functional deletion of E2A are also disclosed. Such methods involve providing a cell with the functionally deleted adenovirus vector, culturing the cell, and harvesting viral particle. The functional deletion can comprise a deletion of nucleic acid encoding E2A. In such a method, the nucleic acid encoding adenovirus E2A in the cell's genome has no sequence overlap with the vector leading to replication competent adenovirus and/or to the formation of an adenovirus vector comprising E2A function.Type: ApplicationFiled: May 1, 2002Publication date: November 7, 2002Inventors: Frits J. Fallaux, Robert C. Hoeben, Abraham Bout, Domenico Valerio, Alex J. van der Eb, Govert Schouten
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Patent number: 6395519Abstract: Cells capable of at least, in part, complementing adenovirus E2A function of an adenovirus defective in E2A function. Such cells include a nucleic acid encoding adenovirus E2A or a functional part, derivative and/or analogue thereof, integrated into the genome of the cell. Preferably, the cell has E2A nucleic acid derived from a temperature sensitive adenovirus such as adenovirus ts125. Methods for producing an adenovirus particle containing an adenovirus vector with a finctional deletion of E2A are also disclosed. Such a method involves providing a cell as previously described with the functionally deleted adenovirus vector, culturing the cell, and harvesting the virus particle. The functional deletion can comprise a deletion of at least part of the nucleic acid encoding E2A.Type: GrantFiled: April 23, 1999Date of Patent: May 28, 2002Assignee: IntroGene B.V.Inventors: Frits J. Fallaux, Robert C. Hoeben, Abraham Bout, Domenico Valerio, Alex J. van der Eb, Govert Schouten
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Patent number: 6265212Abstract: The problem of replication competent adenovirus in virus production is solved in that we have developed packaging cells that have no overlapping sequences with a new basic vector and, thus, are suited for safe large scale production of recombinant adenoviruses. One of the additional problems associated with the use of recombinant adenovirus vectors is the host-defense reaction against treatment with adenovirus. Another aspect of the invention involves screening recombinant adenovirus vector lots, especially those intended for clinical use, for the presence of adenovirus E1 sequences, as this will reveal replication competent adenovirus, as well as revertant E1 adenoviruses. It is also an aspect of the present invention to molecularly characterize the revertants that are generated in the newer helper/vector combinations.Type: GrantFiled: July 19, 1999Date of Patent: July 24, 2001Assignee: Introgene B.V.Inventors: Frits J. Fallaux, Robert C. Hoeben, Abraham Bout, Domenico Valerio, Alex J. van der Eb, Govert Schouten
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Patent number: 5847095Abstract: Molecules complementary to nucleotide sequences encoding mutant ras proteins which contain a single-base mutation in the codon encoding amino acids at position 13, 12 or 61 have been produced. These molecules are useful in methods of detecting specific single-base mutations in altered ras genes and the specific cancers associated with such mutations.Type: GrantFiled: January 3, 1997Date of Patent: December 8, 1998Assignee: The Board of Rijks Universiteit LeidenInventors: Johannes L. Bos, Alex J. van der Eb
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Patent number: 5591582Abstract: Molecules complementary to nucleotide sequences encoding mutant ras proteins which contain a single-base mutation in the codon encoding amino acids at position 13, 12 or 61 have been produced. These molecules are useful in methods of detecting specific single-base mutations in altered ras genes and the specific cancers associated with such mutations.Type: GrantFiled: June 23, 1994Date of Patent: January 7, 1997Assignee: The Board of Rijks Universiteit LeidenInventors: Johannes L. Bos, Alex J. van der Eb
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Patent number: 4871838Abstract: Molecules complementary to nucleotide sequences encoding mutant ras protiens which contain a single-base mutation in the codon encoding amino acids at position 13, 12 or 61 have been produced. These molecules are useful in methods of detecting specific single-base mutations in altered ras genes and the specific cancers associated with such mutations.Type: GrantFiled: July 23, 1985Date of Patent: October 3, 1989Assignee: The Board of Rijks Universiteit LeidenInventors: Johannes L. Bos, Alex J. Van der Eb