Patents by Inventor Klaas Poelstra

Klaas Poelstra 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).

  • Publication number: 20190389923
    Abstract: The invention relates to the field of medicine. Among others, it relates to biologically active analogs of interferons (IFNs) which show less unwanted side-effects and to the therapeutic uses thereof. Provided is an IFN analog, wherein the moiety mediating binding to its natural receptor is at least functionally disrupted and wherein the analog comprises a signaling moiety capable of mediating intracellular IFN activity, said signaling moiety being provided at its N-terminus, optionally via a linker, with at least one targeting domain capable of binding to a cell surface receptor other than the IFN receptor.
    Type: Application
    Filed: September 9, 2019
    Publication date: December 26, 2019
    Inventors: Klaas Poelstra, Jai Prakash, Eleonora Beljaars, Ruchi Bansal
  • Patent number: 10442845
    Abstract: The invention relates to the field of medicine. Among others, it relates to biologically active analogs of interferons (IFNs) which show less unwanted side-effects and to the therapeutic uses thereof. Provided is an IFN analog, wherein the moiety mediating binding to its natural receptor is at least functionally disrupted and wherein the analog comprises a signaling moiety capable of mediating intracellular IFN activity, said signaling moiety being provided at its N-terminus, optionally via a linker, with at least one targeting domain capable of binding to a cell surface receptor other than the IFN receptor.
    Type: Grant
    Filed: April 11, 2018
    Date of Patent: October 15, 2019
    Assignee: BiOrion Technologies B.V.
    Inventors: Klaas Poelstra, Jai Prakash, Eleonora Beljaars, Ruchi Bansal
  • Publication number: 20180298075
    Abstract: The invention relates to the field of medicine. Among others, it relates to biologically active analogs of interferons (IFNs) which show less unwanted side-effects and to the therapeutic uses thereof. Provided is an IFN analog, wherein the moiety mediating binding to its natural receptor is at least functionally disrupted and wherein the analog comprises a signaling moiety capable of mediating intracellular IFN activity, said signaling moiety being provided at its N-terminus, optionally via a linker, with at least one targeting domain capable of binding to a cell surface receptor other than the IFN receptor.
    Type: Application
    Filed: April 11, 2018
    Publication date: October 18, 2018
    Inventors: Klaas Poelstra, Jai Prakash, Eleonora Beljaars, Ruchi Bansal
  • Publication number: 20160297861
    Abstract: The invention relates to the field of medicine. Among others, it relates to biologically active analogs of interferons (IFNs) which show less unwanted side-effects and to the therapeutic uses thereof. Provided is an IFN analog, wherein the moiety mediating binding to its natural receptor is at least functionally disrupted and wherein the analog comprises a signaling moiety capable of mediating intracellular IFN activity, said signaling moiety being provided at its N-terminus, optionally via a linker, with at least one targeting domain capable of binding to a cell surface receptor other than the IFN receptor.
    Type: Application
    Filed: June 9, 2016
    Publication date: October 13, 2016
    Inventors: Klaas Poelstra, Jai Prakash, Eleonora Beljaars, Ruchi Bansal
  • Patent number: 9381230
    Abstract: The invention relates to the field of medicine. Among others, it relates to biologically active analogs of interferons (IFNs) which show less unwanted side-effects and to the therapeutic uses thereof. Provided is an IFN analog, wherein the moiety mediating binding to its natural receptor is at least functionally disrupted and wherein the analog comprises a signaling moiety capable of mediating intracellular IFN activity, said signaling moiety being provided at its N-terminus, optionally via a linker, with at least one targeting domain capable of binding to a cell surface receptor other than the IFN receptor.
    Type: Grant
    Filed: December 30, 2010
    Date of Patent: July 5, 2016
    Assignee: BiOrion Technologies, B.V.
    Inventors: Klaas Poelstra, Jai Prakash, Eleonora Beljaars, Ruchi Bansal
  • Patent number: 8735087
    Abstract: The present invention provides a use for alkaline phosphatase for the manufacture of a medicament for the prevention or reduction of toxic LPS influx through a mucosal lining of a mammalian body cavity. A source of alkaline phosphatase is administered for the prophylaxis or treatment of LPS mediated or exacerbated diseases. The invention also provides compositions comprising a source of alkaline phosphatase for the prevention or reduction of (toxic) LPS influx or passage through mucosal layers.
    Type: Grant
    Filed: February 15, 2013
    Date of Patent: May 27, 2014
    Assignee: PharmAAware Sepsis B.V.
    Inventors: Rudi Brands, Klaas Poelstra
  • Patent number: 8574863
    Abstract: The present invention provides a use for alkaline phosphatase for the manufacture of a medicament for the prevention or reduction of toxic LPS influx through a mucosal lining of a mammalian body cavity. A source of alkaline phosphatase is administered for the prophylaxis or treatment of LPS mediated or exacerbated diseases. The invention also provides compositions comprising a source of alkaline phosphatase for the prevention or reduction of (toxic) LPS influx or passage through mucosal layers.
    Type: Grant
    Filed: February 4, 2005
    Date of Patent: November 5, 2013
    Assignee: PharmAAware Sepsis B.V.
    Inventors: Rudi Brands, Klaas Poelstra
  • Publication number: 20130064791
    Abstract: The invention relates to the field of medicine. Among others, it relates to biologically active analogs of interferons (IFNs) which show less unwanted side-effects and to the therapeutic uses thereof. Provided is an IFN analog, wherein the moiety mediating binding to its natural receptor is at least functionally disrupted and wherein the analog comprises a signaling moiety capable of mediating intracellular IFN activity, said signaling moiety being provided at its N-terminus, optionally via a linker, with at least one targeting domain capable of binding to a cell surface receptor other than the IFN receptor.
    Type: Application
    Filed: December 30, 2010
    Publication date: March 14, 2013
    Applicant: BIORION TECHNOLOGIES B.V.
    Inventors: Klaas Poelstra, Jai Prakash, Eleonora Beljaars, Ruchi Bansal
  • Publication number: 20110142817
    Abstract: Compositions comprising a source of alkaline phosphatase that prevent or reduce toxic influx of lipopolysaccharide (LPS) through mucosal layers of a mamalian body cavity and methods of using these compositions for those purposes are disclosed. Such a source of alkaline phosphatase, preferably in a medical food such as infant milk formula, is eaten, drunk or otherwise administered for prophylaxis or treatment of LPS-mediated or LPS-exacerbated disease.
    Type: Application
    Filed: July 6, 2010
    Publication date: June 16, 2011
    Applicant: PHARMAAWARE SEPSIS B.V.
    Inventors: Rudi BRANDS, Klaas Poelstra
  • Publication number: 20110104103
    Abstract: The present invention relates to a cell-targeting complex comprising a targeting moiety and a deliverable compound, wherein said targeting moiety and said deliverable compound are joined by means of a (transition) metal ion complex having at least a first reactive moiety for forming a coordination bond with a reactive site of said targeting moiety and having at least a second reactive moiety for forming a coordination bond with a reactive site of said deliverable compound, and wherein said deliverable compound is a therapeutic compound.
    Type: Application
    Filed: July 20, 2006
    Publication date: May 5, 2011
    Applicant: KREATECH BIOTECHNOLOGY B.V.
    Inventors: Robert Jochem Heetebrij, Robbert Jan Kok, Eduard Gerhard Talman, Klaas Poelstra, Grietje Molema
  • Publication number: 20090010912
    Abstract: The present invention provides a use for alkaline phosphatase for the manufacture of a medicament for the prevention or reduction of toxic LPS influx through a mucosal lining of a mammalian body cavity. A source of alkaline phosphatase is administered for the prophylaxis or treatment of LPS mediated or exacerbated diseases. The invention also provides compositions comprising a source of alkaline phosphatase for the prevention or reduction of (toxic) LPS influx or passage through mucosal layers.
    Type: Application
    Filed: February 4, 2005
    Publication date: January 8, 2009
    Applicant: PHARMAAWARE SEPSIS B.V.
    Inventors: Rudi Brands, Klaas Poelstra
  • Publication number: 20080267877
    Abstract: A compound includes a carrier molecule wherein the carrier molecule is linked to a further molecule, wherein the further molecule is at least one cyclic peptide in which the cyclic peptide portion thereof contains at least one sequence encoding a cell receptor recognizing peptide (RRP) and with the proviso that the compound is not a naturally occurring receptor agonist or antagonist. Preferably, the RRP is a receptor specific for Hepatic Stellate Cells (HSC) or a receptor that is up-regulated on HSC during disease. The RFP may be chosen from among a PDGF receptor, a collagen type VI receptor, cytokine receptor(s) such as TGB?, INF? and interleukin?. The cyclic portion of the peptide can contain at least one amino acid sequence RGD or KPT.
    Type: Application
    Filed: March 24, 2008
    Publication date: October 30, 2008
    Applicants: Stichting voor de Technische Wetenschappen, Rijksuniversiteit Groningen
    Inventors: Klaas Poelstra, Eleonora Beljaars, Dirk Klaas Fokke Meijer, Detlef Bruno Igor Schuppan
  • Publication number: 20050227916
    Abstract: A compound includes a carrier molecule wherein the carrier molecule is linked to a further molecule, wherein the further molecule is at least one cyclic peptide in which the cyclic peptide portion thereof contains at least one sequence encoding a cell receptor recognizing peptide (RRP) and with the proviso that the compound is not a naturally occurring receptor agonist or antagonist. Preferably, the RRP is a receptor specific for Hepatic Stellate Cells (HSC) or a receptor that is up-regulated on HSC during disease. The RFP may be chosen from among a PDGF receptor, a collagen type VI receptor, cytokine receptor(s) such as TGB?, INF? and interleukin?. The cyclic portion of the peptide can contain at least one amino acid sequence RGD or KPT.
    Type: Application
    Filed: December 15, 2004
    Publication date: October 13, 2005
    Applicants: Stichting voor de Technische Wetenschappen, Rijksuniversiteit Groningen
    Inventors: Klaas Poelstra, Eleonora Beljaars, Dirk Meijer, Detlef Schuppan
  • Patent number: 6844319
    Abstract: The present invention relates to a compound comprising a carrier molecule, said carrier molecule being linked to a further molecule, said further molecule being at least one cyclic peptide, said cyclic peptide comprising in the cyclic peptide portion thereof at least one sequence encoding a cell receptor recognising peptide (RRP) and with the proviso that the compound is not a naturally occuring receptor agonist or antagonist. Preferably, the RRP is of a receptor specific for Hepatic Stellate Cells (HSC) or a receptor that is upregulated on HSC during disease. In particular, the RRP may be of a receptor selected from the group of PDGF receptor, collagen type VI receptor, cytokine receptor(s) such as TGF?, IFN? and interleukin 1?. Preferably, the cyclic portion of the cyclic peptide comprises at least the amino acid sequence RGD or KPT.
    Type: Grant
    Filed: October 8, 1998
    Date of Patent: January 18, 2005
    Assignees: Stichting voor de Technische Wetenschappen, Rijksuniversiteit Groningen
    Inventors: Klaas Poelstra, Eleonora Beljaars, Dirk Klaas Fokke Meijer, Detlef Bruno Igor Schuppan
  • Patent number: 6290952
    Abstract: The invention relates to pharmaceutical compositions suitable for treating or curing clinical complications mediated by endotoxin, including sepsis. The compositions contain components suitable for detoxifying endotoxin rendering it less deleterious to mammals such as humans, in particular to patients with reduced host-defence resistance. The invention also relates to pharmaceutical compositions suitable for stimulating bone formation, e.g. for mending broken bone or for prophylaxis or therapy of metabolic bone diseases such as osteoporosis and osteomalacia and pharmaceutical compositions for decreasing or inhibiting undesired bone formation. The pharmaceutical compositions according to the invention are directed at modulating phosphatase activity in vivo.
    Type: Grant
    Filed: April 10, 1996
    Date of Patent: September 18, 2001
    Assignee: Rijksuniversiteit Groningen
    Inventors: Klaas Poelstra, Machiel Josephus Hardonk, Winston Willem Bakker, Dirk KLaas Fokke Meijer