CN107881158B - Ube2t肽及包含它们的疫苗 - Google Patents

Ube2t肽及包含它们的疫苗 Download PDF

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CN107881158B
CN107881158B CN201711214045.9A CN201711214045A CN107881158B CN 107881158 B CN107881158 B CN 107881158B CN 201711214045 A CN201711214045 A CN 201711214045A CN 107881158 B CN107881158 B CN 107881158B
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peptide
ube2t
seq
cancer
peptides
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CN107881158A (zh
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角田卓也
大泽龙司
吉村祥子
渡边朝久
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Oncotherapy Science Inc
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    • C12Y603/02019Ubiquitin-protein ligase (6.3.2.19), i.e. ubiquitin-conjugating enzyme
    • GPHYSICS
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    • G01N33/50Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
    • G01N33/53Immunoassay; Biospecific binding assay; Materials therefor
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CN201711214045.9A 2012-09-11 2013-09-09 Ube2t肽及包含它们的疫苗 Expired - Fee Related CN107881158B (zh)

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US201261699550P 2012-09-11 2012-09-11
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Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7572700B2 (ja) 2015-10-19 2024-10-24 ユニバーシティ オブ メリーランド ボルチモア 改変ヒト初代血液樹状細胞株を生成するための方法
JP6715004B2 (ja) 2015-12-25 2020-07-01 宏 半田 免疫賦活化剤およびその製造方法
MX2019008878A (es) 2017-01-25 2020-02-13 Ose Immunotherapeutics Metodo para fabricar una emulsion estable para suministro de peptidos.
EP3691662A4 (en) * 2017-10-06 2021-05-12 The University of Chicago Screening of t lymphocytes for cancer-specific antigens
KR102322832B1 (ko) * 2019-04-22 2021-11-12 한국과학기술연구원 인간 백혈구 항원 a24:02 대립유전자에 특이적으로 결합하는 펩타이드 및 이의 용도
CN113679829B (zh) 2020-05-18 2024-01-02 北京繁易纳维科技有限公司 一种预防癌症术后复发的肿瘤疫苗及其制备方法和应用

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101796184A (zh) * 2007-06-27 2010-08-04 肿瘤疗法科学股份有限公司 治疗癌症的组合物及方法
CN102215870A (zh) * 2008-09-18 2011-10-12 学校法人庆应义塾 癌症的诊断方法和治疗方法
CN102459314A (zh) * 2009-05-11 2012-05-16 肿瘤疗法科学股份有限公司 Ttk肽及包含它们的疫苗

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4722848A (en) 1982-12-08 1988-02-02 Health Research, Incorporated Method for immunizing animals with synthetically modified vaccinia virus
US5703055A (en) 1989-03-21 1997-12-30 Wisconsin Alumni Research Foundation Generation of antibodies through lipid mediated DNA delivery
US5804566A (en) 1993-08-26 1998-09-08 The Regents Of The University Of California Methods and devices for immunizing a host through administration of naked polynucleotides with encode allergenic peptides
US5679647A (en) 1993-08-26 1997-10-21 The Regents Of The University Of California Methods and devices for immunizing a host against tumor-associated antigens through administration of naked polynucleotides which encode tumor-associated antigenic peptides
US5739118A (en) 1994-04-01 1998-04-14 Apollon, Inc. Compositions and methods for delivery of genetic material
US5736524A (en) 1994-11-14 1998-04-07 Merck & Co.,. Inc. Polynucleotide tuberculosis vaccine
US5922687A (en) 1995-05-04 1999-07-13 Board Of Trustees Of The Leland Stanford Junior University Intracellular delivery of nucleic acids using pressure
JP2000516090A (ja) 1996-07-26 2000-12-05 スローン―ケッタリング インスティチュート フォー キャンサー リサーチ 遺伝子的免疫化のための方法と試薬
JP4413429B2 (ja) 1998-06-25 2010-02-10 株式会社グリーンペプタイド サイクロフィリンb由来の腫瘍抗原ペプチド
KR20010083111A (ko) 1998-07-14 2001-08-31 길리스 스티브 전립선암의 치료 및 진단을 위한 조성물 및 방법
EE200100203A (et) 1998-10-05 2002-10-15 M & E Biotech A/S Meetod immuunvastuse indutseerimiseks polüpeptiidse antigeeni vastu ja rakuga seotud polüpeptiidse antigeeni mahasurumiseks loomorganismil, selle meetodi kasutamine eesnäärme- ja rinnavähi raviks ning immunogeenne kompositsioon
US6468546B1 (en) 1998-12-17 2002-10-22 Corixa Corporation Compositions and methods for therapy and diagnosis of ovarian cancer
WO2002010369A1 (en) * 2000-07-31 2002-02-07 Kyogo Itoh Tumor antigen
TW200512298A (en) 2003-09-24 2005-04-01 Oncotherapy Science Inc Method of diagnosing breast cancer
US20070202109A1 (en) 2003-09-24 2007-08-30 Oncotherapy Science, Inc. Method Of Diagnosing Breast Cancer
WO2008102906A1 (en) 2007-02-20 2008-08-28 Oncotherapy Science, Inc. Hspc-hrpc transition genes
TWI610939B (zh) * 2007-02-21 2018-01-11 腫瘤療法 科學股份有限公司 表現腫瘤相關抗原之癌症的胜肽疫苗
TWI539160B (zh) 2008-12-05 2016-06-21 腫瘤療法 科學股份有限公司 Wdrpuh抗原決定位胜肽以及含此胜肽之疫苗
RU2011130796A (ru) 2008-12-24 2013-01-27 Онкотерапи Сайенс, Инк. Пептиды c1orf59 и содержащие их вакцины
TW201216982A (en) 2010-10-21 2012-05-01 Oncotherapy Science Inc WDHD1 peptides and vaccines including the same
AU2011319353A1 (en) 2010-10-21 2013-06-13 Oncotherapy Science, Inc. C18orf54 peptides and vaccines including the same
TWI618541B (zh) 2010-12-02 2018-03-21 腫瘤療法 科學股份有限公司 Tomm34胜肽與含此胜肽之疫苗

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101796184A (zh) * 2007-06-27 2010-08-04 肿瘤疗法科学股份有限公司 治疗癌症的组合物及方法
CN102215870A (zh) * 2008-09-18 2011-10-12 学校法人庆应义塾 癌症的诊断方法和治疗方法
CN102459314A (zh) * 2009-05-11 2012-05-16 肿瘤疗法科学股份有限公司 Ttk肽及包含它们的疫苗

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
Elevated expression of UBE2T in lung cancer tumors and cell lines;Hao J.等;《Tumour Biol.》;20080731;第29卷(第3期);第195-203页 *
Hao J.等.Elevated expression of UBE2T in lung cancer tumors and cell lines.《Tumour Biol.》.2008,第29卷(第3期), *
UBE2T Is the E2 in the Fanconi Anemia Pathway and Undergoes Negative Autoregulation;Yuichi J. Machida 等;《Molecular Cell》;20060818;第23卷;第589-596页 *
Ubiquitination and Downregulation of BRCA1 by Ubiquitin-Conjugating Enzyme E2T Overexpression in Human Breast Cancer Cells;Tomomi Ueki等;《Cancer Res》;20091115;第69卷(第22期);第8752-8760页 *

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KR20150054710A (ko) 2015-05-20
MX2015003017A (es) 2015-06-10
TWI632162B (zh) 2018-08-11
PL2895600T3 (pl) 2020-10-05
BR112015004349A2 (pt) 2017-08-08
EP2895600A4 (en) 2016-05-04
US20180360938A1 (en) 2018-12-20
ES2784862T3 (es) 2020-10-01
RU2015113436A (ru) 2016-11-10
CN107881158A (zh) 2018-04-06
BR112015004349B1 (pt) 2022-11-01
EP2895600B1 (en) 2020-02-19
AU2013317194B2 (en) 2018-07-12
JP2015529219A (ja) 2015-10-05
CA2873155C (en) 2022-07-26
IL236690A0 (en) 2015-02-26
CN104619833A (zh) 2015-05-13
US11266729B2 (en) 2022-03-08
TW201414752A (zh) 2014-04-16
EP2895600A1 (en) 2015-07-22
KR102110873B1 (ko) 2020-05-14
DK2895600T3 (da) 2020-04-27
MX362912B (es) 2019-02-22
SG10201701866QA (en) 2017-04-27
IL236690B (en) 2021-03-25
HK1212730A1 (en) 2016-06-17
AU2013317194A1 (en) 2015-02-05
RU2663350C2 (ru) 2018-08-03
US20150174223A1 (en) 2015-06-25
US10092634B2 (en) 2018-10-09
JP6283861B2 (ja) 2018-02-28
SG11201501761SA (en) 2015-04-29
CN104619833B (zh) 2018-01-02
WO2014041784A1 (en) 2014-03-20
CA2873155A1 (en) 2014-03-20

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