ATE328091T1 - Oligoepitop-peptid des prostata-spezifischen antigens - Google Patents

Oligoepitop-peptid des prostata-spezifischen antigens

Info

Publication number
ATE328091T1
ATE328091T1 AT97916850T AT97916850T ATE328091T1 AT E328091 T1 ATE328091 T1 AT E328091T1 AT 97916850 T AT97916850 T AT 97916850T AT 97916850 T AT97916850 T AT 97916850T AT E328091 T1 ATE328091 T1 AT E328091T1
Authority
AT
Austria
Prior art keywords
psa
specific antigen
prostate specific
peptide
oligoepitope
Prior art date
Application number
AT97916850T
Other languages
English (en)
Inventor
Jeffrey Schlom
Kwong-Yok Tsang
Sam Zaremba
Original Assignee
Us Gov Health & Human Serv
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Us Gov Health & Human Serv filed Critical Us Gov Health & Human Serv
Application granted granted Critical
Publication of ATE328091T1 publication Critical patent/ATE328091T1/de

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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K39/00Medicinal preparations containing antigens or antibodies
    • A61K39/0005Vertebrate antigens
    • A61K39/0011Cancer antigens
    • A61K39/001193Prostate associated antigens e.g. Prostate stem cell antigen [PSCA]; Prostate carcinoma tumor antigen [PCTA]; PAP or PSGR
    • A61K39/001194Prostate specific antigen [PSA]
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P35/00Antineoplastic agents
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P37/00Drugs for immunological or allergic disorders
    • A61P37/02Immunomodulators
    • A61P37/04Immunostimulants
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12NMICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N5/00Undifferentiated human, animal or plant cells, e.g. cell lines; Tissues; Cultivation or maintenance thereof; Culture media therefor
    • C12N5/06Animal cells or tissues; Human cells or tissues
    • C12N5/0602Vertebrate cells
    • C12N5/0634Cells from the blood or the immune system
    • C12N5/0636T lymphocytes
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12NMICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N9/00Enzymes; Proenzymes; Compositions thereof; Processes for preparing, activating, inhibiting, separating or purifying enzymes
    • C12N9/14Hydrolases (3)
    • C12N9/48Hydrolases (3) acting on peptide bonds (3.4)
    • C12N9/50Proteinases, e.g. Endopeptidases (3.4.21-3.4.25)
    • C12N9/64Proteinases, e.g. Endopeptidases (3.4.21-3.4.25) derived from animal tissue
    • C12N9/6421Proteinases, e.g. Endopeptidases (3.4.21-3.4.25) derived from animal tissue from mammals
    • C12N9/6424Serine endopeptidases (3.4.21)
    • C12N9/6445Kallikreins (3.4.21.34; 3.4.21.35)
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K35/00Medicinal preparations containing materials or reaction products thereof with undetermined constitution
    • A61K35/12Materials from mammals; Compositions comprising non-specified tissues or cells; Compositions comprising non-embryonic stem cells; Genetically modified cells
    • A61K2035/124Materials from mammals; Compositions comprising non-specified tissues or cells; Compositions comprising non-embryonic stem cells; Genetically modified cells the cells being hematopoietic, bone marrow derived or blood cells
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K39/00Medicinal preparations containing antigens or antibodies
    • A61K2039/51Medicinal preparations containing antigens or antibodies comprising whole cells, viruses or DNA/RNA
    • A61K2039/515Animal cells
    • A61K2039/5154Antigen presenting cells [APCs], e.g. dendritic cells or macrophages
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K39/00Medicinal preparations containing antigens or antibodies
    • A61K2039/51Medicinal preparations containing antigens or antibodies comprising whole cells, viruses or DNA/RNA
    • A61K2039/515Animal cells
    • A61K2039/5156Animal cells expressing foreign proteins
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K39/00Medicinal preparations containing antigens or antibodies
    • A61K2039/51Medicinal preparations containing antigens or antibodies comprising whole cells, viruses or DNA/RNA
    • A61K2039/515Animal cells
    • A61K2039/5158Antigen-pulsed cells, e.g. T-cells
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K39/00Medicinal preparations containing antigens or antibodies
    • A61K2039/51Medicinal preparations containing antigens or antibodies comprising whole cells, viruses or DNA/RNA
    • A61K2039/525Virus
    • A61K2039/5254Virus avirulent or attenuated
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K39/00Medicinal preparations containing antigens or antibodies
    • A61K2039/51Medicinal preparations containing antigens or antibodies comprising whole cells, viruses or DNA/RNA
    • A61K2039/525Virus
    • A61K2039/5256Virus expressing foreign proteins
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K39/00Medicinal preparations containing antigens or antibodies
    • A61K2039/51Medicinal preparations containing antigens or antibodies comprising whole cells, viruses or DNA/RNA
    • A61K2039/53DNA (RNA) vaccination
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K39/00Medicinal preparations containing antigens or antibodies
    • A61K2039/555Medicinal preparations containing antigens or antibodies characterised by a specific combination antigen/adjuvant
    • A61K2039/55511Organic adjuvants
    • A61K2039/55522Cytokines; Lymphokines; Interferons
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K39/00Medicinal preparations containing antigens or antibodies
    • A61K2039/555Medicinal preparations containing antigens or antibodies characterised by a specific combination antigen/adjuvant
    • A61K2039/55511Organic adjuvants
    • A61K2039/55522Cytokines; Lymphokines; Interferons
    • A61K2039/55527Interleukins
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K38/00Medicinal preparations containing peptides
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K39/00Medicinal preparations containing antigens or antibodies
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12NMICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N2710/00MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA dsDNA viruses
    • C12N2710/00011Details
    • C12N2710/24011Poxviridae
    • C12N2710/24111Orthopoxvirus, e.g. vaccinia virus, variola
    • C12N2710/24141Use of virus, viral particle or viral elements as a vector
    • C12N2710/24143Use of virus, viral particle or viral elements as a vector viral genome or elements thereof as genetic vector
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S435/00Chemistry: molecular biology and microbiology
    • Y10S435/975Kit

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Biomedical Technology (AREA)
  • Organic Chemistry (AREA)
  • Immunology (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Zoology (AREA)
  • Genetics & Genomics (AREA)
  • General Health & Medical Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Microbiology (AREA)
  • Biotechnology (AREA)
  • Biochemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Cell Biology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Chemical & Material Sciences (AREA)
  • Epidemiology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Molecular Biology (AREA)
  • Developmental Biology & Embryology (AREA)
  • Oncology (AREA)
  • Mycology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Hematology (AREA)
  • Peptides Or Proteins (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
  • Micro-Organisms Or Cultivation Processes Thereof (AREA)
AT97916850T 1996-03-20 1997-03-19 Oligoepitop-peptid des prostata-spezifischen antigens ATE328091T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/618,936 US6946133B1 (en) 1996-03-20 1996-03-20 Prostate specific antigen oligo-epitope peptide

Publications (1)

Publication Number Publication Date
ATE328091T1 true ATE328091T1 (de) 2006-06-15

Family

ID=24479748

Family Applications (1)

Application Number Title Priority Date Filing Date
AT97916850T ATE328091T1 (de) 1996-03-20 1997-03-19 Oligoepitop-peptid des prostata-spezifischen antigens

Country Status (7)

Country Link
US (5) US6946133B1 (de)
EP (1) EP0888456B1 (de)
AT (1) ATE328091T1 (de)
AU (1) AU2535997A (de)
DE (1) DE69735995T2 (de)
ES (1) ES2262176T3 (de)
WO (1) WO1997035021A2 (de)

Families Citing this family (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7611713B2 (en) * 1993-03-05 2009-11-03 Pharmexa Inc. Inducing cellular immune responses to hepatitis B virus using peptide compositions
US6946133B1 (en) * 1996-03-20 2005-09-20 The United States Of America As Represented By The Department Of Health And Human Services Prostate specific antigen oligo-epitope peptide
WO1999024596A1 (en) * 1997-11-12 1999-05-20 Valentis, Inc. Expression plasmids for multiepitope nucleic acid-based vaccines
US6534482B1 (en) * 1998-05-13 2003-03-18 Epimmune, Inc. Expression vectors for stimulating an immune response and methods of using the same
IL125608A0 (en) * 1998-07-30 1999-03-12 Yeda Res & Dev Tumor associated antigen peptides and use of same as anti-tumor vaccines
EP1303299B1 (de) * 2000-03-29 2010-07-28 The Trustees of The University of Pennsylvania Verwendung prokariotischer pest-ähnlicher peptide zur verstärkung der immunogenität von antigenen
CN100400099C (zh) * 2001-01-04 2008-07-09 北京迪威华宇生物技术有限公司 预防和治疗人前列腺癌的重组蛋白疫苗
US7700344B2 (en) 2001-03-26 2010-04-20 The Trustees Of The University Of Pennsylvania Compositions and methods for enhancing the immunogenicity of antigens
US8771702B2 (en) 2001-03-26 2014-07-08 The Trustees Of The University Of Pennsylvania Non-hemolytic LLO fusion proteins and methods of utilizing same
EP1461073B1 (de) 2001-11-30 2010-01-06 The Government of the United States of America, as represented by the Secretary Department of Health and Human Services Peptidagonisten für prostata-spezifisches antigen und ihre verwendung
US7335744B2 (en) * 2003-12-23 2008-02-26 The Regents Of The California University Prostate cancer specific internalizing human antibodies
US7342107B2 (en) * 2004-05-27 2008-03-11 Centocor, Inc. Cynomolgus prostate specific antigen
US8435507B2 (en) * 2004-08-19 2013-05-07 University Of Maryland Prostate-specific antigen-derived MHC class II restricted peptides and their use in vaccines to treat or prevent prostate cancer
US9193763B2 (en) 2007-08-17 2015-11-24 Purdue Research Foundation PSMA binding ligand-linker conjugates and methods for using
EA023897B1 (ru) * 2009-08-26 2016-07-29 Селекта Байосайенсиз, Инк. Композиции, которые индуцируют хелперное действие т-клеток
US9951324B2 (en) 2010-02-25 2018-04-24 Purdue Research Foundation PSMA binding ligand-linker conjugates and methods for using
KR101171381B1 (ko) 2010-05-28 2012-08-13 한국과학기술원 암세포에 특이적인 활성을 갖는 신규 펩타이드 항암제
WO2012019125A2 (en) 2010-08-06 2012-02-09 The United States Of America, As Represented By The Secretary, Department Of Health And Human Services Biomarkers for prostate cancer and methods for their detection
US20130028857A1 (en) 2011-07-29 2013-01-31 Selecta Biosciences, Inc. Synthetic nanocarriers comprising polymers comprising multiple immunomodulatory agents
US20150071987A1 (en) * 2012-02-03 2015-03-12 Emory University Immunostimulatory compositions, particles, and uses related thereto
WO2013146997A1 (ja) 2012-03-30 2013-10-03 国立大学法人京都大学 前立腺がん検査用尿中バイオマーカー
AU2013344778C1 (en) 2012-11-15 2024-06-27 Endocyte, Inc. Conjugates for treating diseases caused by PSMA expressing cells
WO2014144885A2 (en) 2013-03-15 2014-09-18 The Trustees Of The University Of Pennsylvania Cancer vaccines and methods of treatment using the same
EP3456700A1 (de) 2013-10-18 2019-03-20 Deutsches Krebsforschungszentrum Markierte inhibitoren des prostataspezifischen membranantigens (psma), deren verwendung als kontrastmittel und pharmazeutika zur behandlung von prostatakrebs
CN105849568B (zh) 2013-11-14 2018-05-04 恩多塞特公司 用于正电子发射断层术的化合物
US10188759B2 (en) 2015-01-07 2019-01-29 Endocyte, Inc. Conjugates for imaging
TW201708260A (zh) * 2015-07-22 2017-03-01 優瑞卡醫療公司 靶向psa胜肽/mhc複合體之構築體及其用途
EP3400009A2 (de) 2016-01-05 2018-11-14 The U.S.A. As Represented By The Secretary, Department Of Health And Human Services Kombination von histondeacetylasehemmer und immuntherapie
WO2017136342A1 (en) 2016-02-02 2017-08-10 The United States Of America, As Represented By The Secretary, Department Of Health And Human Services Fulvestrant for inducing immune-mediated cytotoxic lysis of cancer cells
KR20210003135A (ko) 2018-04-17 2021-01-11 엔도사이트, 인코포레이티드 암의 치료 방법
WO2020030954A1 (en) * 2018-08-09 2020-02-13 Integrative Medicine Clinic, Sia Theranostics-like protein sanps conjugated to integrin and pmsa targeting peptides and therapy of prostate cancer
JP7604397B2 (ja) 2019-05-20 2024-12-23 エンドサイト・インコーポレイテッド Psmaコンジュゲートの調製方法
US20230287067A1 (en) * 2020-01-21 2023-09-14 The United States Of America,As Represented By The Secretary,Department Of Health And Human Services Human immunogenic epitopes of hemo and hhla2 human endogenous retroviruses (hervs)

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5204096A (en) * 1984-03-07 1993-04-20 New York Blood Center, Inc. Pre-S gene coded peptide hepatitis B immunogens, vaccines, diagnostics, and synthetic lipid vesicle carriers
EP0487587A1 (de) 1989-08-18 1992-06-03 Chiron Corporation Rekombinante retroviren um vektorkonstruktionen an zielzellen zu liefern
SG52492A1 (en) 1992-08-07 1998-09-28 Cytel Corp Hla binding peptides and their uses
JP3908271B2 (ja) 1993-03-05 2007-04-25 エピミューン,インコーポレイティド Hla−a2.1結合ペプチドおよびそれらの使用
US5516639A (en) * 1993-07-22 1996-05-14 Mayo Foundation For Medical Education And Research Antibodies specific for human prostate glandular kallkrein
US5925362A (en) * 1993-08-11 1999-07-20 Jenner Technologies Method to elicit an antitumor response with human prostate-specific antigen
EP0652014A1 (de) 1993-11-10 1995-05-10 National Institute Of Immunology Behandlung von Prostatahypertrophie
ZA941645B (en) * 1994-03-09 1995-01-13 South To South Co Operation In Antibodies specifically reactive against human prostate specific antigen.
US5976794A (en) * 1994-04-15 1999-11-02 The Trustees Of Columbia University In The City Of New York Method for molecular staging of prostate cancer
AU2361595A (en) 1994-04-22 1995-11-16 Sloan-Kettering Institute For Cancer Research Induction of cytotoxic t lymphocytes (ctl) using antigenic peptides and a suitable adjuvant
US6001349A (en) * 1995-02-22 1999-12-14 Therion Biologics Corporation Generation of human cytotoxic T-cells specific for carcinoma self-associated antigens and uses thereof
US6165460A (en) 1995-07-10 2000-12-26 Therion Biologics Corporation Generation of immune responses to prostate-specific antigen (PSA)
US6946133B1 (en) * 1996-03-20 2005-09-20 The United States Of America As Represented By The Department Of Health And Human Services Prostate specific antigen oligo-epitope peptide

Also Published As

Publication number Publication date
US6946133B1 (en) 2005-09-20
US20050196806A1 (en) 2005-09-08
DE69735995D1 (de) 2006-07-06
EP0888456A2 (de) 1999-01-07
US20110091498A1 (en) 2011-04-21
ES2262176T3 (es) 2006-11-16
WO1997035021A2 (en) 1997-09-25
US20090263425A1 (en) 2009-10-22
WO1997035021A3 (en) 1997-10-30
US7547773B2 (en) 2009-06-16
US8178508B2 (en) 2012-05-15
EP0888456B1 (de) 2006-05-31
DE69735995T2 (de) 2007-04-19
US20070098691A1 (en) 2007-05-03
AU2535997A (en) 1997-10-10
US7871986B2 (en) 2011-01-18

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