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Knutson KL, Kalli KR, Block MS, Hobday TJ, Padley DJ, Erskine CL, Dockter T, Suman VJ, Wilson G, Degnim AC. Abstract P2-11-02: Robust generation of T cell immunity to HER2 in HER2+ breast cancer patients with a degenerate subdominant HLA-DR epitope vaccine. Cancer Res 2016. [DOI: 10.1158/1538-7445.sabcs15-p2-11-02] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Recent studies have indicated that vaccination can protect against cancer development. One key aspect of developing vaccines is circumventing peripheral tolerance by identifying subdominant epitopes that are unique to the deregulated tumor microenvironment. While existing subdominant epitope vaccines are showing efficacy in preventing cancer, these vaccines are applicable only for subsets of patients with specific HLA subtypes. Therefore, we recently developed a degenerate HER2 subdominant epitope-based vaccine that should be useful in approximately 85% of all patients. The vaccine consists of a pool of four HLA-DR-restricted 15-amino acid epitopes (p59, p88, p422, and p885) that are naturally processed and are designed to elicit helper T cell immunity, the cornerstone of immune surveillance. Here we present Phase I trial results of this multi-peptide HER2 vaccine.
Methods: Eligible women had HER2+ breast cancer (Stages II-III) and had completed standard treatment (i.e. surgery, chemotherapy, and trastuzumab) at least 90 days prior to enrollment and were rendered disease free. Vaccine included the above epitope pool along with adjuvant GM-CSF. Patients were vaccinated six times over six months and were monitored for toxicity at each visit. Peripheral blood samples were collected for immune responses evaluating for T cell and antibody immunity. Endpoints were safety and immunogenicity leading to the development CD4 helper T cells that recognized naturally-processed HER2.
Results: Twenty-two subjects (age 33 to 69 years) were enrolled. At the present analysis, 21 have completed all 6 vaccination cycles; one patient withdrew after developing a grade 1 injection site reaction during the first vaccination cycle. Twenty patients have had LVEF measured after vaccination; only 2 patients had an LVEF drop of 10% or more but remained in the normal LEVF range. One severe toxicity was reported: a grade 3 INR increase considered unrelated to treatment. Mild to moderate (grade 1-2) toxicities included injection site reactions, fatigue, and white blood cell count decreases. All patients were alive at analysis and only one experienced a recurrence (median follow-up 507 days, range 22 – 844). Twenty patients have had immune response assessments. Vaccine induced T cell immunity was observed in 94% of patients to p59, in 94% of patients to p88, in 82% of patients to p422, and in 74% of patients to p885. Importantly, T cell immunity to naturally processed HER2 proteins occurred in 94% of patients. The mean number of T cells specific for each peptide, post vaccination, ranged from 349–528 T cells per million peripheral blood mononuclear cells (PBMCs). The mean number of T cells specific for whole HER2 protein was 783 T cells per million PBMCs compared to a mean of 898 T cells/million PBMCs specific for the foreign tetanus toxin. In contrast to T cell responses, modestly increased antibody immunity to HER2 occurred in 35% of patients, consistent with the T cell-inducing design of the vaccine.
Conclusion: Our results show that it is possible to develop vaccines with broad HLA coverage that circumvent natural tolerance and induce tumor antigen-specific immunity in the vast majority of patients.
Citation Format: Knutson KL, Kalli KR, Block MS, Hobday TJ, Padley DJ, Erskine CL, Dockter T, Suman VJ, Wilson G, Degnim AC. Robust generation of T cell immunity to HER2 in HER2+ breast cancer patients with a degenerate subdominant HLA-DR epitope vaccine. [abstract]. In: Proceedings of the Thirty-Eighth Annual CTRC-AACR San Antonio Breast Cancer Symposium: 2015 Dec 8-12; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2016;76(4 Suppl):Abstract nr P2-11-02.
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Affiliation(s)
- KL Knutson
- Mayo Clinic, Jacksonville, FL; Mayo Clinic, Rochester, MN; TapImmune, Inc., Seattle, WA
| | - KR Kalli
- Mayo Clinic, Jacksonville, FL; Mayo Clinic, Rochester, MN; TapImmune, Inc., Seattle, WA
| | - MS Block
- Mayo Clinic, Jacksonville, FL; Mayo Clinic, Rochester, MN; TapImmune, Inc., Seattle, WA
| | - TJ Hobday
- Mayo Clinic, Jacksonville, FL; Mayo Clinic, Rochester, MN; TapImmune, Inc., Seattle, WA
| | - DJ Padley
- Mayo Clinic, Jacksonville, FL; Mayo Clinic, Rochester, MN; TapImmune, Inc., Seattle, WA
| | - CL Erskine
- Mayo Clinic, Jacksonville, FL; Mayo Clinic, Rochester, MN; TapImmune, Inc., Seattle, WA
| | - T Dockter
- Mayo Clinic, Jacksonville, FL; Mayo Clinic, Rochester, MN; TapImmune, Inc., Seattle, WA
| | - VJ Suman
- Mayo Clinic, Jacksonville, FL; Mayo Clinic, Rochester, MN; TapImmune, Inc., Seattle, WA
| | - G Wilson
- Mayo Clinic, Jacksonville, FL; Mayo Clinic, Rochester, MN; TapImmune, Inc., Seattle, WA
| | - AC Degnim
- Mayo Clinic, Jacksonville, FL; Mayo Clinic, Rochester, MN; TapImmune, Inc., Seattle, WA
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Köbel M, Madore J, Ramus SJ, Clarke BA, Pharoah PDP, Deen S, Bowtell DD, Odunsi K, Menon U, Morrison C, Lele S, Bshara W, Sucheston L, Beckmann MW, Hein A, Thiel FC, Hartmann A, Wachter DL, Anglesio MS, Høgdall E, Jensen A, Høgdall C, Kalli KR, Fridley BL, Keeney GL, Fogarty ZC, Vierkant RA, Liu S, Cho S, Nelson G, Ghatage P, Gentry-Maharaj A, Gayther SA, Benjamin E, Widschwendter M, Intermaggio MP, Rosen B, Bernardini MQ, Mackay H, Oza A, Shaw P, Jimenez-Linan M, Driver KE, Alsop J, Mack M, Koziak JM, Steed H, Ewanowich C, DeFazio A, Chenevix-Trench G, Fereday S, Gao B, Johnatty SE, George J, Galletta L, Goode EL, Kjær SK, Huntsman DG, Fasching PA, Moysich KB, Brenton JD, Kelemen LE. Evidence for a time-dependent association between FOLR1 expression and survival from ovarian carcinoma: implications for clinical testing. An Ovarian Tumour Tissue Analysis consortium study. Br J Cancer 2014; 111:2297-307. [PMID: 25349970 PMCID: PMC4264456 DOI: 10.1038/bjc.2014.567] [Citation(s) in RCA: 72] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Revised: 09/03/2014] [Accepted: 10/02/2014] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Folate receptor 1 (FOLR1) is expressed in the majority of ovarian carcinomas (OvCa), making it an attractive target for therapy. However, clinical trials testing anti-FOLR1 therapies in OvCa show mixed results and require better understanding of the prognostic relevance of FOLR1 expression. We conducted a large study evaluating FOLR1 expression with survival in different histological types of OvCa. METHODS Tissue microarrays composed of tumour samples from 2801 patients in the Ovarian Tumour Tissue Analysis (OTTA) consortium were assessed for FOLR1 expression by centralised immunohistochemistry. We estimated associations for overall (OS) and progression-free (PFS) survival using adjusted Cox regression models. High-grade serous ovarian carcinomas (HGSC) from The Cancer Genome Atlas (TCGA) were evaluated independently for association between FOLR1 mRNA upregulation and survival. RESULTS FOLR1 expression ranged from 76% in HGSC to 11% in mucinous carcinomas in OTTA. For HGSC, the association between FOLR1 expression and OS changed significantly during the years following diagnosis in OTTA (Pinteraction=0.01, N=1422) and TCGA (Pinteraction=0.01, N=485). In OTTA, particularly for FIGO stage I/II tumours, patients with FOLR1-positive HGSC showed increased OS during the first 2 years only (hazard ratio=0.44, 95% confidence interval=0.20-0.96) and patients with FOLR1-positive clear cell carcinomas (CCC) showed decreased PFS independent of follow-up time (HR=1.89, 95% CI=1.10-3.25, N=259). In TCGA, FOLR1 mRNA upregulation in HGSC was also associated with increased OS during the first 2 years following diagnosis irrespective of tumour stage (HR: 0.48, 95% CI: 0.25-0.94). CONCLUSIONS FOLR1-positive HGSC tumours were associated with an increased OS in the first 2 years following diagnosis. Patients with FOLR1-negative, poor prognosis HGSC would be unlikely to benefit from anti-FOLR1 therapies. In contrast, a decreased PFS interval was observed for FOLR1-positive CCC. The clinical efficacy of FOLR1-targeted interventions should therefore be evaluated according to histology, stage and time following diagnosis.
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Affiliation(s)
- M Köbel
- Department of Pathology and Laboratory Medicine, University of Calgary, Foothills Medical Center, 1403 29 ST NW, Calgary, AB T2N 2T9, Canada
| | - J Madore
- Department of Pathology and Laboratory Medicine, University of British Columbia, BC Cancer Agency, 600 West 10th Avenue, Vancouver, BC V5E 4E6, Canada
- Melanoma Institute Australia, University of Sydney, Royal Prince Alfred Hospital, Gloucester House–level 3, Missenden Road, Camperdown, NSW 2050, Australia
| | - S J Ramus
- Department of Preventive Medicine, Keck School of Medicine, USC/Norris Comprehensive Cancer Center, University of Southern California, Harlyne Norris Research Tower, 1450 Biggy Street, Office 2517G, Los Angeles, CA 90033, USA
| | - B A Clarke
- Department of Laboratory Medicine and Pathobiology, Princess Margaret Cancer Centre, University of Toronto, 610 Univeristy Avenue, M-700, Toronto, ON M5T 2M9, Canada
| | - P D P Pharoah
- Department of Public Health and Primary Care, University of Cambridge, Strangeways Research Laboratory, Worts Causeway, Cambridge CB1 8RN, UK
- Department of Oncology, University of Cambridge, Strangeways Research Laboratory, Worts Causeway, Cambridge CB1 8RN, UK
| | - S Deen
- Department of Histopathology, Queen's Medical Centre, Nottingham University Hospitals NHS Trust, Nottingham NG7 2UH, UK
| | - D D Bowtell
- Department of Cancer Genomics and Genetics, Peter MacCallum Cancer Centre, Locked Bag I, A'Beckett Street, East Melbourne, VIC 8006, Australia
- Department of Biochemistry and Molecular Biology, University of Melbourne, 30 Flemington Road, Melbourne, VIC 3010, Australia
- Sir Peter MacCallum Department of Oncology, University of Melbourne, 30 Flemington Road, Melbourne, VIC 3010, Australia
| | - K Odunsi
- Department of Gynecological Oncology, Roswell Park Cancer Institute, Elm and Carlton Streets, Buffalo, NY 14263, USA
| | - U Menon
- Gynaecological Cancer Research Centre, Department of Women's Cancer, Institute for Women's Health, University College London, Maple House 1st Floor, 149 Tottenham Court Road, London W1T 7DN, UK
| | - C Morrison
- Department of Pathology and Laboratory Medicine, Roswell Park Cancer Institute, Elm and Carlton Streets, Buffalo, NY 14263, USA
| | - S Lele
- Department of Gynecological Oncology, Roswell Park Cancer Institute, Elm and Carlton Streets, Buffalo, NY 14263, USA
- Department of Cancer Prevention and Control, Roswell Park Cancer Institute, Elm and Carlton Streets, Buffalo, NY 14263, USA
| | - W Bshara
- Department of Pathology and Laboratory Medicine, Roswell Park Cancer Institute, Elm and Carlton Streets, Buffalo, NY 14263, USA
| | - L Sucheston
- Department of Cancer Prevention and Control, Roswell Park Cancer Institute, Elm and Carlton Streets, Buffalo, NY 14263, USA
| | - M W Beckmann
- Department of Gynecology and Obstetrics, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nuremberg, Comprehensive Cancer Center Erlangen-EMN, Universitaetsstrasse 21-23, 91054 Erlangen, Germany
| | - A Hein
- Department of Gynecology and Obstetrics, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nuremberg, Comprehensive Cancer Center Erlangen-EMN, Universitaetsstrasse 21-23, 91054 Erlangen, Germany
| | - F C Thiel
- Department of Gynecology and Obstetrics, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nuremberg, Comprehensive Cancer Center Erlangen-EMN, Universitaetsstrasse 21-23, 91054 Erlangen, Germany
| | - A Hartmann
- Institute of Pathology, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nuremberg, Comprehensive Cancer Center Erlangen-EMN, Krankenhausstrasse 8-10, 91054 Erlangen, Germany
| | - D L Wachter
- Institute of Pathology, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nuremberg, Comprehensive Cancer Center Erlangen-EMN, Krankenhausstrasse 8-10, 91054 Erlangen, Germany
| | - M S Anglesio
- Department of Pathology and Laboratory Medicine, University of British Columbia, BC Cancer Agency, 600 West 10th Avenue, Vancouver, BC V5E 4E6, Canada
| | - E Høgdall
- Department of Virus, Lifestyle and Genes, Danish Cancer Society Research Center, Strandboulevarden 49, DK-2100 Copenhagen, Ø, Denmark
- Department of Pathology, Herlev Hospital, University of Copenhagen, Herlev Ringvej 75, DK-2370 Herlev, Denmark
| | - A Jensen
- Department of Virus, Lifestyle and Genes, Danish Cancer Society Research Center, Strandboulevarden 49, DK-2100 Copenhagen, Ø, Denmark
| | - C Høgdall
- The Juliane Marie Center, Department of Obstetrics and Gynecology, Rigshospitalet, University of Copenhagen, Blegdamsvej 9, DK-2100 Copenhagen, Ø, Denmark
| | - K R Kalli
- Department of Medical Oncology, Mayo Clinic, 200 First Street SW, Charlton 6, Rochester, MN 55905, USA
| | - B L Fridley
- Department of Biostatistics, University of Kansas Medical Center, 3901 Rainbow Boulevard, Kansas City, KS 66160, USA
| | - G L Keeney
- Department of Laboratory Medicine and Pathology, Division of Anatomic Pathology, Mayo Clinic, 200 First Street SW, Stabile 13, Rochester, MN 55905, USA
| | - Z C Fogarty
- Department of Health Sciences Research, Division of Biomedical Statistics and Informatics, Mayo Clinic, 200 First Street SW, Charlton 6, Rochester, MN 55905, USA
| | - R A Vierkant
- Department of Health Sciences Research, Division of Biomedical Statistics and Informatics, Mayo Clinic, 200 First Street SW, Charlton 6, Rochester, MN 55905, USA
| | - S Liu
- Anatomic Pathology Research Laboratory, Calgary Laboratory Services, Foothills Medical Center, 1403 29 ST NW, Calgary, AB T2N 2T9, Canada
| | - S Cho
- Department of Pathology and Laboratory Medicine, University of Calgary, Foothills Medical Center, 1403 29 ST NW, Calgary, AB T2N 2T9, Canada
| | - G Nelson
- Department of Obstetrics and Gynecology, Division of Oncology, Tom Baker Cancer Centre, University of Calgary, Foothills Medical Center, 1403 29 ST NW, Calgary, AB T2N 2T9, Canada
| | - P Ghatage
- Department of Obstetrics and Gynecology, Division of Oncology, Tom Baker Cancer Centre, University of Calgary, Foothills Medical Center, 1403 29 ST NW, Calgary, AB T2N 2T9, Canada
| | - A Gentry-Maharaj
- Gynaecological Cancer Research Centre, Department of Women's Cancer, Institute for Women's Health, University College London, Maple House 1st Floor, 149 Tottenham Court Road, London W1T 7DN, UK
| | - S A Gayther
- Department of Preventive Medicine, Keck School of Medicine, USC/Norris Comprehensive Cancer Center, University of Southern California, Harlyne Norris Research Tower, 1450 Biggy Street, Office 2517G, Los Angeles, CA 90033, USA
| | - E Benjamin
- Department of Pathology, Cancer Institute, University College London, Maple House, 149 Tottenham Court Road, London WC1E 6JJ, UK
| | - M Widschwendter
- Department of Women's Cancer, UCL EGA Institute for Women's Health, University College London, 74 Huntley Street, London WC1E 6AU, UK
| | - M P Intermaggio
- Department of Preventive Medicine, Keck School of Medicine, USC/Norris Comprehensive Cancer Center, University of Southern California, Harlyne Norris Research Tower, 1450 Biggy Street, Office 2517G, Los Angeles, CA 90033, USA
| | - B Rosen
- Department of Obstetrics and Gynecology, University of Toronto, Princess Margaret Cancer Centre, 610 University Avenue, M-700, Toronto, ON M5T 2M9, Canada
| | - M Q Bernardini
- Department of Obstetrics and Gynecology, University of Toronto, Princess Margaret Cancer Centre, 610 University Avenue, M-700, Toronto, ON M5T 2M9, Canada
| | - H Mackay
- Department of Medicine, Division of Medical Oncology, University of Toronto, Princess Margaret Hospital, 610 University Avenue, Toronto, ON M5G 2M9, Canada
| | - A Oza
- Department of Obstetrics and Gynecology, University of Toronto, Princess Margaret Cancer Centre, 610 University Avenue, M-700, Toronto, ON M5T 2M9, Canada
| | - P Shaw
- Department of Obstetrics and Gynecology, University of Toronto, Princess Margaret Cancer Centre, 610 University Avenue, M-700, Toronto, ON M5T 2M9, Canada
| | - M Jimenez-Linan
- Department of Pathology, Addenbrooke's Hospital, Cambridge University Hospital NHS Foundation Trust, Hills Road, Cambridge CB2 0QQ, UK
- National Institute for Health Research Cambridge Biomedical Research Centre, Cambridge CB2 2QQ, UK
| | - K E Driver
- Department of Oncology, University of Cambridge, Strangeways Research Laboratory, Worts Causeway, Cambridge CB1 8RN, UK
| | - J Alsop
- Department of Oncology, University of Cambridge, Strangeways Research Laboratory, Worts Causeway, Cambridge CB1 8RN, UK
| | - M Mack
- Department of Oncology, University of Cambridge, Strangeways Research Laboratory, Worts Causeway, Cambridge CB1 8RN, UK
| | - J M Koziak
- Department of Population Health Research, Alberta Health Services-Cancer Care, 2210 2nd Street SW, Calgary, AB, T2S 3C3, Canada
| | - H Steed
- Department of Obstetrics and Gynecology, Division of Gynecologic Oncology, Royal Alexandra Hospital, 10240 Kingsway Ave, Edmonton, AB T5H 3V9, Canada
| | - C Ewanowich
- Department of Laboratory Medicine and Pathology, Royal Alexandra Hospital, 10240 Kingsway Ave, Edmonton, AB T5H 3V9, Canada
| | - A DeFazio
- Department of Gynaecological Oncology and Westmead Institute for Cancer Research, University of Sydney at Westmead Millennium Institute, Westmead Hospital, Westmead, NSW 2145, Australia
| | - G Chenevix-Trench
- Genetics and Computational Biology Department, QIMR Berghofer Medical Research Institute, 300 Herston Road, Herston, QLD,4006, Australia
| | - S Fereday
- Department of Cancer Genomics and Genetics, Peter MacCallum Cancer Centre, Locked Bag I, A'Beckett Street, East Melbourne, VIC 8006, Australia
| | - B Gao
- Department of Gynaecological Oncology and Westmead Institute for Cancer Research, University of Sydney at Westmead Millennium Institute, Westmead Hospital, Westmead, NSW 2145, Australia
| | - S E Johnatty
- Genetics and Computational Biology Department, QIMR Berghofer Medical Research Institute, 300 Herston Road, Herston, QLD,4006, Australia
| | - J George
- Department of Cancer Genomics and Genetics, Peter MacCallum Cancer Centre, Locked Bag I, A'Beckett Street, East Melbourne, VIC 8006, Australia
| | - L Galletta
- Department of Cancer Genomics and Genetics, Peter MacCallum Cancer Centre, Locked Bag I, A'Beckett Street, East Melbourne, VIC 8006, Australia
| | - AOCS Study Group
- Department of Cancer Genomics and Genetics, Peter MacCallum Cancer Centre, Locked Bag I, A'Beckett Street, East Melbourne, VIC 8006, Australia
| | - E L Goode
- Department of Health Sciences Research, Division of Epidemiology, Mayo Clinic, 200 First Street SW Charlton 6, Rochester, MN 55905, USA
| | - S K Kjær
- Department of Virus, Lifestyle and Genes, Danish Cancer Society Research Center, Strandboulevarden 49, DK-2100 Copenhagen, Ø, Denmark
- The Juliane Marie Center, Department of Obstetrics and Gynecology, Rigshospitalet, University of Copenhagen, Blegdamsvej 9, DK-2100 Copenhagen, Ø, Denmark
| | - D G Huntsman
- Department of Pathology and Laboratory Medicine, University of British Columbia, BC Cancer Agency, 600 West 10th Avenue, Vancouver, BC V5E 4E6, Canada
- Centre For Translational and Applied Genomics, British Columbia Cancer Agency, 600 West 10th Avenue, Vancouver, BC V5Z 4E6, Canada
| | - P A Fasching
- Department of Gynecology and Obstetrics, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nuremberg, Comprehensive Cancer Center Erlangen-EMN, Universitaetsstrasse 21-23, 91054 Erlangen, Germany
- Department of Medicine, Division of Hematology and Oncology, David Geffen School of Medicine, University of California at Los Angeles, Los Angeles, CA 90095, USA
| | - K B Moysich
- Department of Cancer Prevention and Control, Roswell Park Cancer Institute, Elm and Carlton Streets, Buffalo, NY 14263, USA
| | - J D Brenton
- National Institute for Health Research Cambridge Biomedical Research Centre, Cambridge CB2 2QQ, UK
- Department of Oncology, University of Cambridge, Hutchison/MRC Research Centre, Hills Road, Cambridge CB2 0XZ, UK
- Cancer Research UK Cambridge Institute, University of Cambridge, Li Ka Shing Centre, Robinson Way, Cambridge CB2 0RE, UK
- Cambridge Experimental Cancer Medicine Centre, Cambridge CB2 0RE, UK
| | - L E Kelemen
- Department of Public Health Sciences, Medical University of South Carolina and Hollings Cancer Center, 135 Cannon Street, Charleston, SC 29425, USA
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Köbel M, Madore J, Ramus SJ, Clarke BA, Pharoah PDP, Deen S, Bowtell DD, Odunsi K, Menon U, Morrison C, Lele S, Bshara W, Sucheston L, Beckmann MW, Hein A, Thiel FC, Hartmann A, Wachter DL, Anglesio MS, Høgdall E, Jensen A, Høgdall C, Kalli KR, Fridley BL, Keeney GL, Fogarty ZC, Vierkant RA, Liu S, Cho S, Nelson G, Ghatage P, Gentry-Maharaj A, Gayther SA, Benjamin E, Widschwendter M, Intermaggio MP, Rosen B, Bernardini MQ, Mackay H, Oza A, Shaw P, Jimenez-Linan M, Driver KE, Alsop J, Mack M, Koziak JM, Steed H, Ewanowich C, DeFazio A, Chenevix-Trench G, Fereday S, Gao B, Johnatty SE, George J, Galletta L, Goode EL, Kjær SK, Huntsman DG, Fasching PA, Moysich KB, Brenton JD, Kelemen LE. Evidence for a time-dependent association between FOLR1 expression and survival from ovarian carcinoma: implications for clinical testing. An Ovarian Tumour Tissue Analysis consortium study. Br J Cancer 2014. [PMID: 25349970 DOI: 10.1038/bjc.2014.567] [] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND Folate receptor 1 (FOLR1) is expressed in the majority of ovarian carcinomas (OvCa), making it an attractive target for therapy. However, clinical trials testing anti-FOLR1 therapies in OvCa show mixed results and require better understanding of the prognostic relevance of FOLR1 expression. We conducted a large study evaluating FOLR1 expression with survival in different histological types of OvCa. METHODS Tissue microarrays composed of tumour samples from 2801 patients in the Ovarian Tumour Tissue Analysis (OTTA) consortium were assessed for FOLR1 expression by centralised immunohistochemistry. We estimated associations for overall (OS) and progression-free (PFS) survival using adjusted Cox regression models. High-grade serous ovarian carcinomas (HGSC) from The Cancer Genome Atlas (TCGA) were evaluated independently for association between FOLR1 mRNA upregulation and survival. RESULTS FOLR1 expression ranged from 76% in HGSC to 11% in mucinous carcinomas in OTTA. For HGSC, the association between FOLR1 expression and OS changed significantly during the years following diagnosis in OTTA (Pinteraction=0.01, N=1422) and TCGA (Pinteraction=0.01, N=485). In OTTA, particularly for FIGO stage I/II tumours, patients with FOLR1-positive HGSC showed increased OS during the first 2 years only (hazard ratio=0.44, 95% confidence interval=0.20-0.96) and patients with FOLR1-positive clear cell carcinomas (CCC) showed decreased PFS independent of follow-up time (HR=1.89, 95% CI=1.10-3.25, N=259). In TCGA, FOLR1 mRNA upregulation in HGSC was also associated with increased OS during the first 2 years following diagnosis irrespective of tumour stage (HR: 0.48, 95% CI: 0.25-0.94). CONCLUSIONS FOLR1-positive HGSC tumours were associated with an increased OS in the first 2 years following diagnosis. Patients with FOLR1-negative, poor prognosis HGSC would be unlikely to benefit from anti-FOLR1 therapies. In contrast, a decreased PFS interval was observed for FOLR1-positive CCC. The clinical efficacy of FOLR1-targeted interventions should therefore be evaluated according to histology, stage and time following diagnosis.
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Affiliation(s)
- M Köbel
- Department of Pathology and Laboratory Medicine, University of Calgary, Foothills Medical Center, 1403 29 ST NW, Calgary, AB T2N 2T9, Canada
| | - J Madore
- 1] Department of Pathology and Laboratory Medicine, University of British Columbia, BC Cancer Agency, 600 West 10th Avenue, Vancouver, BC V5E 4E6, Canada [2] Melanoma Institute Australia, University of Sydney, Royal Prince Alfred Hospital, Gloucester House-level 3, Missenden Road, Camperdown, NSW 2050, Australia
| | - S J Ramus
- Department of Preventive Medicine, Keck School of Medicine, USC/Norris Comprehensive Cancer Center, University of Southern California, Harlyne Norris Research Tower, 1450 Biggy Street, Office 2517G, Los Angeles, CA 90033, USA
| | - B A Clarke
- Department of Laboratory Medicine and Pathobiology, Princess Margaret Cancer Centre, University of Toronto, 610 Univeristy Avenue, M-700, Toronto, ON M5T 2M9, Canada
| | - P D P Pharoah
- 1] Department of Public Health and Primary Care, University of Cambridge, Strangeways Research Laboratory, Worts Causeway, Cambridge CB1 8RN, UK [2] Department of Oncology, University of Cambridge, Strangeways Research Laboratory, Worts Causeway, Cambridge CB1 8RN, UK
| | - S Deen
- Department of Histopathology, Queen's Medical Centre, Nottingham University Hospitals NHS Trust, Nottingham NG7 2UH, UK
| | - D D Bowtell
- 1] Department of Cancer Genomics and Genetics, Peter MacCallum Cancer Centre, Locked Bag I, A'Beckett Street, East Melbourne, VIC 8006, Australia [2] Department of Biochemistry and Molecular Biology, University of Melbourne, 30 Flemington Road, Melbourne, VIC 3010, Australia [3] Sir Peter MacCallum Department of Oncology, University of Melbourne, 30 Flemington Road, Melbourne, VIC 3010, Australia
| | - K Odunsi
- Department of Gynecological Oncology, Roswell Park Cancer Institute, Elm and Carlton Streets, Buffalo, NY 14263, USA
| | - U Menon
- Gynaecological Cancer Research Centre, Department of Women's Cancer, Institute for Women's Health, University College London, Maple House 1st Floor, 149 Tottenham Court Road, London W1T 7DN, UK
| | - C Morrison
- Department of Pathology and Laboratory Medicine, Roswell Park Cancer Institute, Elm and Carlton Streets, Buffalo, NY 14263, USA
| | - S Lele
- 1] Department of Gynecological Oncology, Roswell Park Cancer Institute, Elm and Carlton Streets, Buffalo, NY 14263, USA [2] Department of Cancer Prevention and Control, Roswell Park Cancer Institute, Elm and Carlton Streets, Buffalo, NY 14263, USA
| | - W Bshara
- Department of Pathology and Laboratory Medicine, Roswell Park Cancer Institute, Elm and Carlton Streets, Buffalo, NY 14263, USA
| | - L Sucheston
- Department of Cancer Prevention and Control, Roswell Park Cancer Institute, Elm and Carlton Streets, Buffalo, NY 14263, USA
| | - M W Beckmann
- Department of Gynecology and Obstetrics, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nuremberg, Comprehensive Cancer Center Erlangen-EMN, Universitaetsstrasse 21-23, 91054 Erlangen, Germany
| | - A Hein
- Department of Gynecology and Obstetrics, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nuremberg, Comprehensive Cancer Center Erlangen-EMN, Universitaetsstrasse 21-23, 91054 Erlangen, Germany
| | - F C Thiel
- Department of Gynecology and Obstetrics, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nuremberg, Comprehensive Cancer Center Erlangen-EMN, Universitaetsstrasse 21-23, 91054 Erlangen, Germany
| | - A Hartmann
- Institute of Pathology, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nuremberg, Comprehensive Cancer Center Erlangen-EMN, Krankenhausstrasse 8-10, 91054 Erlangen, Germany
| | - D L Wachter
- Institute of Pathology, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nuremberg, Comprehensive Cancer Center Erlangen-EMN, Krankenhausstrasse 8-10, 91054 Erlangen, Germany
| | - M S Anglesio
- Department of Pathology and Laboratory Medicine, University of British Columbia, BC Cancer Agency, 600 West 10th Avenue, Vancouver, BC V5E 4E6, Canada
| | - E Høgdall
- 1] Department of Virus, Lifestyle and Genes, Danish Cancer Society Research Center, Strandboulevarden 49, DK-2100 Copenhagen, Ø, Denmark [2] Department of Pathology, Herlev Hospital, University of Copenhagen, Herlev Ringvej 75, DK-2370 Herlev, Denmark
| | - A Jensen
- Department of Virus, Lifestyle and Genes, Danish Cancer Society Research Center, Strandboulevarden 49, DK-2100 Copenhagen, Ø, Denmark
| | - C Høgdall
- The Juliane Marie Center, Department of Obstetrics and Gynecology, Rigshospitalet, University of Copenhagen, Blegdamsvej 9, DK-2100 Copenhagen, Ø, Denmark
| | - K R Kalli
- Department of Medical Oncology, Mayo Clinic, 200 First Street SW, Charlton 6, Rochester, MN 55905, USA
| | - B L Fridley
- Department of Biostatistics, University of Kansas Medical Center, 3901 Rainbow Boulevard, Kansas City, KS 66160, USA
| | - G L Keeney
- Department of Laboratory Medicine and Pathology, Division of Anatomic Pathology, Mayo Clinic, 200 First Street SW, Stabile 13, Rochester, MN 55905, USA
| | - Z C Fogarty
- Department of Health Sciences Research, Division of Biomedical Statistics and Informatics, Mayo Clinic, 200 First Street SW, Charlton 6, Rochester, MN 55905, USA
| | - R A Vierkant
- Department of Health Sciences Research, Division of Biomedical Statistics and Informatics, Mayo Clinic, 200 First Street SW, Charlton 6, Rochester, MN 55905, USA
| | - S Liu
- Anatomic Pathology Research Laboratory, Calgary Laboratory Services, Foothills Medical Center, 1403 29 ST NW, Calgary, AB T2N 2T9, Canada
| | - S Cho
- Department of Pathology and Laboratory Medicine, University of Calgary, Foothills Medical Center, 1403 29 ST NW, Calgary, AB T2N 2T9, Canada
| | - G Nelson
- Department of Obstetrics and Gynecology, Division of Oncology, Tom Baker Cancer Centre, University of Calgary, Foothills Medical Center, 1403 29 ST NW, Calgary, AB T2N 2T9, Canada
| | - P Ghatage
- Department of Obstetrics and Gynecology, Division of Oncology, Tom Baker Cancer Centre, University of Calgary, Foothills Medical Center, 1403 29 ST NW, Calgary, AB T2N 2T9, Canada
| | - A Gentry-Maharaj
- Gynaecological Cancer Research Centre, Department of Women's Cancer, Institute for Women's Health, University College London, Maple House 1st Floor, 149 Tottenham Court Road, London W1T 7DN, UK
| | - S A Gayther
- Department of Preventive Medicine, Keck School of Medicine, USC/Norris Comprehensive Cancer Center, University of Southern California, Harlyne Norris Research Tower, 1450 Biggy Street, Office 2517G, Los Angeles, CA 90033, USA
| | - E Benjamin
- Department of Pathology, Cancer Institute, University College London, Maple House, 149 Tottenham Court Road, London WC1E 6JJ, UK
| | - M Widschwendter
- Department of Women's Cancer, UCL EGA Institute for Women's Health, University College London, 74 Huntley Street, London WC1E 6AU, UK
| | - M P Intermaggio
- Department of Preventive Medicine, Keck School of Medicine, USC/Norris Comprehensive Cancer Center, University of Southern California, Harlyne Norris Research Tower, 1450 Biggy Street, Office 2517G, Los Angeles, CA 90033, USA
| | - B Rosen
- Department of Obstetrics and Gynecology, University of Toronto, Princess Margaret Cancer Centre, 610 University Avenue, M-700, Toronto, ON M5T 2M9, Canada
| | - M Q Bernardini
- Department of Obstetrics and Gynecology, University of Toronto, Princess Margaret Cancer Centre, 610 University Avenue, M-700, Toronto, ON M5T 2M9, Canada
| | - H Mackay
- Department of Medicine, Division of Medical Oncology, University of Toronto, Princess Margaret Hospital, 610 University Avenue, Toronto, ON M5G 2M9, Canada
| | - A Oza
- Department of Obstetrics and Gynecology, University of Toronto, Princess Margaret Cancer Centre, 610 University Avenue, M-700, Toronto, ON M5T 2M9, Canada
| | - P Shaw
- Department of Obstetrics and Gynecology, University of Toronto, Princess Margaret Cancer Centre, 610 University Avenue, M-700, Toronto, ON M5T 2M9, Canada
| | - M Jimenez-Linan
- 1] Department of Pathology, Addenbrooke's Hospital, Cambridge University Hospital NHS Foundation Trust, Hills Road, Cambridge CB2 0QQ, UK [2] National Institute for Health Research Cambridge Biomedical Research Centre, Cambridge CB2 2QQ, UK
| | - K E Driver
- Department of Oncology, University of Cambridge, Strangeways Research Laboratory, Worts Causeway, Cambridge CB1 8RN, UK
| | - J Alsop
- Department of Oncology, University of Cambridge, Strangeways Research Laboratory, Worts Causeway, Cambridge CB1 8RN, UK
| | - M Mack
- Department of Oncology, University of Cambridge, Strangeways Research Laboratory, Worts Causeway, Cambridge CB1 8RN, UK
| | - J M Koziak
- Department of Population Health Research, Alberta Health Services-Cancer Care, 2210 2nd Street SW, Calgary, AB, T2S 3C3, Canada
| | - H Steed
- Department of Obstetrics and Gynecology, Division of Gynecologic Oncology, Royal Alexandra Hospital, 10240 Kingsway Ave, Edmonton, AB T5H 3V9, Canada
| | - C Ewanowich
- Department of Laboratory Medicine and Pathology, Royal Alexandra Hospital, 10240 Kingsway Ave, Edmonton, AB T5H 3V9, Canada
| | - A DeFazio
- Department of Gynaecological Oncology and Westmead Institute for Cancer Research, University of Sydney at Westmead Millennium Institute, Westmead Hospital, Westmead, NSW 2145, Australia
| | - G Chenevix-Trench
- Genetics and Computational Biology Department, QIMR Berghofer Medical Research Institute, 300 Herston Road, Herston, QLD,4006, Australia
| | - S Fereday
- Department of Cancer Genomics and Genetics, Peter MacCallum Cancer Centre, Locked Bag I, A'Beckett Street, East Melbourne, VIC 8006, Australia
| | - B Gao
- Department of Gynaecological Oncology and Westmead Institute for Cancer Research, University of Sydney at Westmead Millennium Institute, Westmead Hospital, Westmead, NSW 2145, Australia
| | - S E Johnatty
- Genetics and Computational Biology Department, QIMR Berghofer Medical Research Institute, 300 Herston Road, Herston, QLD,4006, Australia
| | - J George
- Department of Cancer Genomics and Genetics, Peter MacCallum Cancer Centre, Locked Bag I, A'Beckett Street, East Melbourne, VIC 8006, Australia
| | - L Galletta
- Department of Cancer Genomics and Genetics, Peter MacCallum Cancer Centre, Locked Bag I, A'Beckett Street, East Melbourne, VIC 8006, Australia
| | | | - E L Goode
- Department of Health Sciences Research, Division of Epidemiology, Mayo Clinic, 200 First Street SW Charlton 6, Rochester, MN 55905, USA
| | - S K Kjær
- 1] Department of Virus, Lifestyle and Genes, Danish Cancer Society Research Center, Strandboulevarden 49, DK-2100 Copenhagen, Ø, Denmark [2] The Juliane Marie Center, Department of Obstetrics and Gynecology, Rigshospitalet, University of Copenhagen, Blegdamsvej 9, DK-2100 Copenhagen, Ø, Denmark
| | - D G Huntsman
- 1] Department of Pathology and Laboratory Medicine, University of British Columbia, BC Cancer Agency, 600 West 10th Avenue, Vancouver, BC V5E 4E6, Canada [2] Centre For Translational and Applied Genomics, British Columbia Cancer Agency, 600 West 10th Avenue, Vancouver, BC V5Z 4E6, Canada
| | - P A Fasching
- 1] Department of Gynecology and Obstetrics, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nuremberg, Comprehensive Cancer Center Erlangen-EMN, Universitaetsstrasse 21-23, 91054 Erlangen, Germany [2] Department of Medicine, Division of Hematology and Oncology, David Geffen School of Medicine, University of California at Los Angeles, Los Angeles, CA 90095, USA
| | - K B Moysich
- Department of Cancer Prevention and Control, Roswell Park Cancer Institute, Elm and Carlton Streets, Buffalo, NY 14263, USA
| | - J D Brenton
- 1] National Institute for Health Research Cambridge Biomedical Research Centre, Cambridge CB2 2QQ, UK [2] Department of Oncology, University of Cambridge, Hutchison/MRC Research Centre, Hills Road, Cambridge CB2 0XZ, UK [3] Cancer Research UK Cambridge Institute, University of Cambridge, Li Ka Shing Centre, Robinson Way, Cambridge CB2 0RE, UK [4] Cambridge Experimental Cancer Medicine Centre, Cambridge CB2 0RE, UK
| | - L E Kelemen
- Department of Public Health Sciences, Medical University of South Carolina and Hollings Cancer Center, 135 Cannon Street, Charleston, SC 29425, USA
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4
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Cunningham JM, Cicek MS, Larson NB, Davila J, Wang C, Larson MC, Song H, Dicks EM, Harrington P, Wick M, Winterhoff BJ, Hamidi H, Konecny GE, Chien J, Bibikova M, Fan JB, Kalli KR, Lindor NM, Fridley BL, Pharoah PPD, Goode EL. Clinical characteristics of ovarian cancer classified by BRCA1, BRCA2, and RAD51C status. Sci Rep 2014; 4:4026. [PMID: 24504028 PMCID: PMC4168524 DOI: 10.1038/srep04026] [Citation(s) in RCA: 111] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2013] [Accepted: 01/20/2014] [Indexed: 12/20/2022] Open
Abstract
We evaluated homologous recombination deficient (HRD) phenotypes in epithelial ovarian cancer (EOC) considering BRCA1, BRCA2, and RAD51C in a large well-annotated patient set. We evaluated EOC patients for germline deleterious mutations (n = 899), somatic mutations (n = 279) and epigenetic alterations (n = 482) in these genes using NGS and genome-wide methylation arrays. Deleterious germline mutations were identified in 32 (3.6%) patients for BRCA1, in 28 (3.1%) for BRCA2 and in 26 (2.9%) for RAD51C. Ten somatically sequenced patients had deleterious alterations, six (2.1%) in BRCA1 and four (1.4%) in BRCA2. Fifty two patients (10.8%) had methylated BRCA1 or RAD51C. HRD patients with germline or somatic alterations in any gene were more likely to be high grade serous, have an earlier diagnosis age and have ovarian and/or breast cancer family history. The HRD phenotype was most common in high grade serous EOC. Identification of EOC patients with an HRD phenotype may help tailor specific therapies.
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Affiliation(s)
- J. M. Cunningham
- Department of Laboratory Medicine and Pathology, Division of Experimental Pathology, Mayo Clinic, Rochester, Minnesota
| | - M. S. Cicek
- Department of Health Sciences Research, Division of Epidemiology, Mayo Clinic, Rochester, Minnesota
| | - N. B. Larson
- Department of Health Sciences Research, Division of Biomedical Statistics and Informatics, Mayo Clinic, Rochester, Minnesota
| | - J. Davila
- Department of Health Sciences Research, Division of Biomedical Statistics and Informatics, Mayo Clinic, Rochester, Minnesota
| | - C. Wang
- Department of Health Sciences Research, Division of Biomedical Statistics and Informatics, Mayo Clinic, Rochester, Minnesota
| | - M. C. Larson
- Department of Health Sciences Research, Division of Biomedical Statistics and Informatics, Mayo Clinic, Rochester, Minnesota
| | - H. Song
- Department of Oncology, University of Cambridge, Cambridge, United Kingdom
| | - E. M. Dicks
- Department of Oncology, University of Cambridge, Cambridge, United Kingdom
| | - P. Harrington
- Department of Oncology, University of Cambridge, Cambridge, United Kingdom
| | - M. Wick
- Department of Obstetrics and Gynecology, Mayo Clinic, Rochester, Minnesota
| | - B. J. Winterhoff
- Department of Obstetrics and Gynecology, Mayo Clinic, Rochester, Minnesota
| | - H. Hamidi
- Department of Medicine, Division of Hematology and Oncology, David Geffen School of Medicine, University of California at Los Angeles and Jonsson Comprehensive Cancer Center, Los Angeles, California
| | - G. E. Konecny
- Department of Medicine, Division of Hematology and Oncology, David Geffen School of Medicine, University of California at Los Angeles and Jonsson Comprehensive Cancer Center, Los Angeles, California
| | - J. Chien
- Department of Translational Genomics, University of Kansas Medical Center, Kansas City, Kansas
| | | | - J.-B. Fan
- Illumina Corporation, San Diego, California
| | - K. R. Kalli
- Department of Medical Oncology, Mayo Clinic, Rochester, Minnesota
| | - N. M. Lindor
- Department of Health Science Research, Medical Genetics, Mayo Clinic, Scottsdale, Arizona
| | - B. L. Fridley
- Department of Biostatistics, University of Kansas Medical Center, Kansas City, Kansas
| | - P. P. D. Pharoah
- Department of Oncology, University of Cambridge, Cambridge, United Kingdom
- Department of Public Health and Primary Care, University of Cambridge, Cambridge, United Kingdom
| | - E. L. Goode
- Department of Health Sciences Research, Division of Epidemiology, Mayo Clinic, Rochester, Minnesota
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5
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Chen DS, Feltquate DM, Smothers F, Hoos A, Langermann S, Marshall S, May R, Fleming M, Hodi FS, Senderowicz A, Wiman KG, de Dosso S, Fiedler W, Gianni L, Cresta S, Schulze-Bergkamen HB, Gurrieri L, Salzberg M, Dietrich B, Danielczyk A, Baumeister H, Goletz S, Sessa C, Strumberg D, Schultheis B, Santel A, Gebhardt F, Meyer-Sabellek W, Keil O, Giese K, Kaufmann J, Maio M, Choy G, Covre A, Parisi G, Nicolay H, Fratta E, Fonsatti E, Sigalotti L, Coral S, Taverna P, Azab M, Deutsch E, Lepechoux C, Pignon JP, Tao YT, Rivera S, Bourgier BC, Angokai M, Bahleda R, Slimane K, Angevin E, Besse BB, Soria JC, Dragnev K, Beumer JH, Anyang B, Ma T, Galimberti F, Erkmen CP, Nugent W, Rigas J, Abraham K, Johnstone D, Memoli V, Dmitrovsky E, Voest EE, Siu L, Janku F, Soria JC, Tsimberidou A, Kurzrock R, Tabernero J, Rodon J, Berger R, Onn A, Batist G, Bresson C, Lazar V, Molenaar JJ, Koster J, Ebus M, Zwijnenburg DA, van Sluis P, Lamers F, Schild L, van der Ploeg I, Caron HN, Versteeg R, Pouyssegur J, Marchiq I, Chiche J, Roux D, Le Floch R, Critchlow SE, Wooster RF, Agresta S, Yen KE, Janne PA, Plummer ER, Trinchieri G, Ellis L, Chan SL, Yeo W, Chan AT, Mouliere F, El Messaoudi S, Gongora C, Lamy PJ, del Rio M, Lopez-Crapez E, Gillet B, Mathonnet M, Pezet D, Ychou M, Thierry AR, Ribrag V, Vainchenker W, Constantinescu S, Keilhack H, Umelo IA, Noeparast A, Chen G, Renard M, Geers C, Vansteenkiste J, Teugels E, de Greve J, Rixe O, Qi X, Chu Z, Celerier J, Leconte L, Minet N, Pakradouni J, Kaur B, Cuttitta F, Wagner AJ, Zhang YX, Sicinska E, Czaplinski JT, Remillard SP, Demetri GD, Weng S, Debussche L, Agoni L, Reddy EP, Guha C, Silence K, Thibault A, de Haard H, Dreier T, Ulrichts P, Moshir M, Gabriels S, Luo J, Carter C, Rajan A, Khozin S, Thomas A, Lopez-Chavez A, Brzezniak C, Doyle L, Keen C, Manu M, Raffeld M, Giaccone G, Lutzker S, Melief JM, Eckhardt SG, Trusolino L, Migliardi G, Zanella ER, Cottino F, Galimi F, Sassi F, Marsoni S, Comoglio PM, Bertotti A, Hidalgo M, Weroha SJ, Haluska P, Becker MA, Harrington SC, Goodman KM, Gonzalez SE, al Hilli M, Butler KA, Kalli KR, Oberg AL, Huijbers IJ, Bin Ali R, Pritchard C, Cozijnsen M, Proost N, Song JY, Krimpenfort P, Michalak E, Jonkers J, Berns A, Banerji U, Stewart A, Thavasu P, Banerjee S, Kaye SB. Lectures. Ann Oncol 2013. [DOI: 10.1093/annonc/mdt042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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6
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Knutson KL, Kalli KR, Krco CJ, Goodman K, Kelemen LE, Low PS, Hartmann LC. Patients with breast and ovarian cancer generate immune responses to the folate receptor alpha. J Clin Oncol 2006. [DOI: 10.1200/jco.2006.24.18_suppl.20043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
20043 Background: Studies have demonstrated that the generation of endogenous immunity to specific tumor antigens is associated with improved prognosis for many cancers. Thus, there has been increased efforts to identify tumor-associated antigens to which there is immunity, as these may be tumor rejection antigens. A candidate antigen is the folate receptor alpha (FRα) which is overexpressed in malignancies, especially breast and ovarian cancer. Prior studies involving ovarian and breast cancer patients have demonstrated the presence of FRα-specific cytotoxic T cells in the tumor-associated lymphocyte population. Methods: Using the RANKPEP CD4 T cell epitope prediction algorithm, we predicted promiscuous immunogenic regions of FRα, and tested for immunity in 30 breast or ovarian cancer patients and 18 healthy volunteer donors in order to attain a better understanding of the levels and extent of the endogenous FRα immune response. Immunity was examined using IFN-γ ELIspot analysis and IgG ELISAs. Results: Fourteen peptides were predicted as potential epitopes to which T cells may respond, seven each from the carboxy- and amino-terminus halves of the protein. Greater than 70% of patients demonstrated T cell immunity to at least one of the fourteen peptides. Patients responded to an average of 3 ± 0.7 peptides while healthy donors responded to only 1 ± 0.5 peptides (p = 0.02). Five peptides were recognized by >25% of patients. Responses to three of these peptides were higher (p > 0.05) in the patients than in healthy donors, suggesting that patients generated immunity upon cancer development. Compared to healthy individuals, patients developed higher immunity to the amino-terminus half of the receptor, suggesting natural epitope spreading (p = 0.03). There was no difference between patients and healthy donors in the immune responses to either non-specific stimuli (p = 0.2) or viral peptides (p = 0.5). Patients had detectable FRα-specific IgG antibody consistent with active FRα-specific helper T cell immunity. Conclusions: These findings demonstrate that the FRα is a target of the immune system in patients with breast or ovarian cancer. Understanding the antigens that are naturally targeted by the immune system may be important for diagnosis, prognosis, and immune-based therapies. No significant financial relationships to disclose.
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Affiliation(s)
- K. L. Knutson
- Mayo Clinic, Rochester, MN; Mayo Clinic, Rochester, MN; Purdue, West Lafayette, IN
| | - K. R. Kalli
- Mayo Clinic, Rochester, MN; Mayo Clinic, Rochester, MN; Purdue, West Lafayette, IN
| | - C. J. Krco
- Mayo Clinic, Rochester, MN; Mayo Clinic, Rochester, MN; Purdue, West Lafayette, IN
| | - K. Goodman
- Mayo Clinic, Rochester, MN; Mayo Clinic, Rochester, MN; Purdue, West Lafayette, IN
| | - L. E. Kelemen
- Mayo Clinic, Rochester, MN; Mayo Clinic, Rochester, MN; Purdue, West Lafayette, IN
| | - P. S. Low
- Mayo Clinic, Rochester, MN; Mayo Clinic, Rochester, MN; Purdue, West Lafayette, IN
| | - L. C. Hartmann
- Mayo Clinic, Rochester, MN; Mayo Clinic, Rochester, MN; Purdue, West Lafayette, IN
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7
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Abstract
Endometrial cancer and hyperplasia have long been associated with diabetes. Hyperinsulinemia may have a direct mitogenic effect on the endometrium and may inhibit the effect of progestogen therapy. This case report describes the treatment of a patient with atypical endometrial hyperplasia with an insulin-sensitizing agent. A 37-year-old patient presented after failed treatment of endometrial hyperplasia with progestogen therapy. One month after initiating metformin therapy the patient's endometrial biopsy demonstrated proliferative endometrium. This patient's atypical endometrial hyperplasia regressed after the initiation of treatment with an insulin-sensitizing agent. This relatively new class of drugs may provide an adjunct to the therapy of endometrial hyperplasia.
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Affiliation(s)
- D R Session
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA
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Walsh RJ, Matsuzaki S, Reinot T, Hayes JM, Kalli KR, Hartmann LC, Small GJ. Single-cell nonphotochemical hole burning of ovarian surface epithelial carcinoma and normal cells. Proc Natl Acad Sci U S A 2003; 100:1685-9. [PMID: 12574511 PMCID: PMC149893 DOI: 10.1073/pnas.0437668100] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2002] [Accepted: 12/16/2002] [Indexed: 11/18/2022] Open
Abstract
Persistent spectral nonphotochemical hole-burning (NPHB) spectroscopy has recently been applied to dye molecules in cells. The sensitivity of NPHB to the nanoenvironment of the probe is well established. It has been shown that NPHB applied to bulk suspensions of cultured human cells can distinguish between normal and cancer cells. Thus, NPHB has potential as a diagnostic cancer tool. For this reason, the methodology is referred to as hole-burning imaging, by analogy with MRI. The optical dephasing time (T(2)) of the dye in hole-burning image replaces the proton T(1) relaxation time in MRI. In addition to the T(2) mode of operation, there are four other modes including measurement of the spectral hole growth kinetics (HGK). Reported here is that the selectivity and sensitivity of NPHB operating in the HGK mode allow for distinction between normal and carcinoma cells at the single-cell level. The ovarian cell lines are ovarian surface epithelial cells with temperature-sensitive large T antigens (analogously normal) and ovarian surface epithelial carcinoma (OV167) cells. The mitochondrial specific dye used was rhodamine 800 (Molecular Probes). This carbocationic dye is highly specific for the outer and inner membranes of mitochondria. In line with the results for bulk suspensions of the two cell lines, the hole-burning efficiency for OV167 cells was found to be significantly higher than that for normal cells. Theoretical analysis of the HGK data leads to the conclusion that the degree of structural heterogeneity for the probe-host configurations in OV167 cells is lower than in the normal cells. Possible reasons for this are given.
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Affiliation(s)
- R J Walsh
- Ames Laboratory, U.S. Department of Energy, Iowa State University, Ames, IA 50011, USA
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9
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Walsh RJ, Reinot T, Hayes JM, Kalli KR, Hartmann LC, Small GJ. Carcinoma and SV40-transfected normal ovarian surface epithelial cell comparison by nonphotochemical hole burning. Biophys J 2003; 84:1299-307. [PMID: 12547810 PMCID: PMC1302706 DOI: 10.1016/s0006-3495(03)74945-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Abstract
Results are presented of nonphotochemical-hole-burning experiments on the mitochondrial specific dye rhodamine 800 incubated with two human ovarian surface epithelial cell lines: OSE(tsT)-14 normal cells and OV167 carcinoma cells. This dye is selective for the plasma and inner membranes of the mitochondria, as shown by confocal microscopy images. Dispersive hole-growth kinetics of zero-phonon holes are analyzed with theoretical fits, indicating that subcellular structural heterogeneity of the carcinoma cell line is lower relative to the analogous normal cell line. Broadening of holes in the presence of an applied electric field (Stark effect) was used to determine the permanent dipole moment change for the S(0)-->S(1) transition in the two cell lines. For the carcinoma cell line, the permanent dipole moment change value is a factor of 1.5 higher than for the normal cell line. It is speculated that this difference may be related to differences in mitochondrial membrane potentials in the two cell lines.
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Affiliation(s)
- R J Walsh
- Ames Laboratory--USDOE, Iowa State University, Ames, Iowa 50011, USA
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10
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Goetzl EJ, Lee H, Dolezalova H, Kalli KR, Conover CA, Hu YL, Azuma T, Stossel TP, Karliner JS, Jaffe RB. Mechanisms of lysolipid phosphate effects on cellular survival and proliferation. Ann N Y Acad Sci 2000; 905:177-87. [PMID: 10818453 DOI: 10.1111/j.1749-6632.2000.tb06549.x] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
The specificity of cellular effects of lysolipid phosphate (LLP) growth factors is determined by binding to endothelial differentiation gene-encoded G protein-coupled receptors (EDG Rs), which transduce diverse proliferative and effector signals. The primary determinants of cellular responses to LLPs are the generative and biodegradative events, which establish steady-state concentrations of each LLP at cell surfaces, and the relative frequency of expression of each EDG R. There are major differences among types of cells in the net effective generation of the LLPs, lysophosphatidic acid (LPA) and sphingosine 1-phosphate (S1P), and in their profile of expression of EDG Rs. The less well characterized secondary determinants of cellular specificity of LLPs are high-affinity binding proteins with carrier and cell-presentation functions, cell-selective regulators of expression of EDG Rs, and cellular factors that govern coupling of EDG Rs to G protein transductional pathways. The roles of components of the LLP-EDG R system in normal physiology and disease processes will be definitively elucidated only after development of animal models with biologically meaningful alterations in genes encoding EDG Rs and the discovery of potent and selective pharmacological probes.
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Affiliation(s)
- E J Goetzl
- Department of Medicine, University of California, San Francisco 94143, USA.
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11
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Goetzl EJ, Dolezalova H, Kong Y, Hu YL, Jaffe RB, Kalli KR, Conover CA. Distinctive expression and functions of the type 4 endothelial differentiation gene-encoded G protein-coupled receptor for lysophosphatidic acid in ovarian cancer. Cancer Res 1999; 59:5370-5. [PMID: 10537322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/14/2023]
Abstract
Endothelial differentiation gene (edg)-encoded G protein-coupled receptors (Edg Rs)-1, -3, and -5 bind sphingosine 1-phosphate (S1P), and Edg-2 and -4 bind lysophosphatidic acid (LPA). Edg Rs transduce signals from LPA and S1P that stimulate ras- and rho-dependent cellular proliferation, enhance cellular survival, and suppress apoptosis. That high levels of LPA in plasma and ascitic fluid of patients with ovarian cancer correlate with widespread invasion suggested the importance of investigating expression and functions of Edg Rs in ovarian cancer cells (OCCs) as compared with nonmalignant ovarian surface epithelial cells (OSEs). Analyses of Edg Rs by semiquantitative reverse transcription-PCR, a radioactively quantified variant of PCR, and Western blots developed with monoclonal antibodies showed prominent expression of Edg-4 R in primary cultures and established lines of OCCs but none in OSEs. In contrast, levels of Edg-2, -3, and -5 were higher in OSEs than OCCs. LPA stimulated proliferation and signaled a serum response element-luciferase reporter of immediate-early gene activation in OCCs but not OSEs, whereas S1P evoked similar responses in both OSEs and OCCs. Pharmacological inhibitors of Edg R signaling suppressed OCC responses to LPA. A combination of monoclonal anti-Edg-4 R antibody and phorbol myristate acetate, which were inactive separately, evoked proliferative and serum response element-luciferase responses of OCCs but not OSEs. Thus the Edg-4 R may represent a distinctive marker of OCC that transduces growth-promoting signals from the high local concentrations of LPA characteristic of aggressive ovarian cancer.
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Affiliation(s)
- E J Goetzl
- Department of Medicine and Microbiology-Immunology, University of California, San Francisco 94143, USA.
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12
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Conover CA, Hartmann LC, Bradley S, Stalboerger P, Klee GG, Kalli KR, Jenkins RB. Biological characterization of human epithelial ovarian carcinoma cells in primary culture: the insulin-like growth factor system. Exp Cell Res 1998; 238:439-49. [PMID: 9473353 DOI: 10.1006/excr.1997.3861] [Citation(s) in RCA: 69] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Little is known about the factors regulating epithelial ovarian cancer cell growth. This is due, in large part, to the difficulty in obtaining and culturing human ovarian cells for relevant in vitro studies. We recently developed a method for culturing epithelial carcinoma cells derived from fresh, untreated epithelial ovarian cancer specimens. The cell populations are free of fibroblasts and reflect the primary tumor as determined by chromosomal analysis. In this study we report on the cells' growth in serum-free medium and their secretion of CA-125, a glycoprotein marker for ovarian cancer. Furthermore we characterize the insulin-like growth factor (IGF) system in these primary ovarian carcinoma cell cultures. The cells secrete IGF peptides and IGF-binding proteins, possess specific type I IGF receptors, and respond to exogenous IGFs. The culture system reported here provides the basis for further study and manipulation of the IGF system as well as other regulators of epithelial ovarian cancer. Greater understanding of the cellular and molecular mediators of primary human ovarian cancer cell growth may translate into relevant clinical interventions.
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Affiliation(s)
- C A Conover
- Department of Internal Medicine, Mayo Clinic and Mayo Foundation, Rochester, Minnesota 55905, USA
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Hedin KE, Bell MP, Kalli KR, Huntoon CJ, Sharp BM, McKean DJ. Delta-opioid receptors expressed by Jurkat T cells enhance IL-2 secretion by increasing AP-1 complexes and activity of the NF-AT/AP-1-binding promoter element. J Immunol 1997; 159:5431-40. [PMID: 9548483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Recent molecular evidence points to transient and/or stage-specific expression of delta- and kappa-opioid receptors by thymic and peripheral T lymphocytes. Since medical treatments or stress commonly increase opioid levels, it is important to understand the mechanisms by which opioids affect T lymphocyte functions. We therefore created and studied a T cell line expressing the cloned delta-opioid receptor (DOR1). DOR1 ligation by a specific DOR1 agonist, deltorphin, augmented IL-2 secretion by synergizing with signals from TCR-CD3 and CD28. Reporter gene constructs were used to map this effect of deltorphin to the AP-1- and NF-AT/AP-1-binding sites of the IL-2 promoter. Although DOR1 signaling increased [Ca2+]i, deltorphin enhanced transcriptional activity of the NF-AT/AP-1-binding site via a mechanism independent of calcineurin and distinct from the effects of elevated [Ca2+]i. Deltorphin also increased accumulation of AP-1 transcription factor complexes, suggesting that DOR1 augments IL-2 secretion by increasing the AP-1 component of the NF-AT/AP-1 transcription factor. These results advance the molecular understanding of opioid effects on lymphocytes, and in addition, demonstrate regulation of IL-2 synthesis and secretion by the novel mechanism of receptor-mediated AP-1 induction.
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Affiliation(s)
- K E Hedin
- Department of Immunology, Mayo Foundation, Rochester, MN 55905, USA
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14
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Hedin KE, Bell MP, Kalli KR, Huntoon CJ, Sharp BM, McKean DJ. Delta-opioid receptors expressed by Jurkat T cells enhance IL-2 secretion by increasing AP-1 complexes and activity of the NF-AT/AP-1-binding promoter element. The Journal of Immunology 1997. [DOI: 10.4049/jimmunol.159.11.5431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Abstract
Recent molecular evidence points to transient and/or stage-specific expression of delta- and kappa-opioid receptors by thymic and peripheral T lymphocytes. Since medical treatments or stress commonly increase opioid levels, it is important to understand the mechanisms by which opioids affect T lymphocyte functions. We therefore created and studied a T cell line expressing the cloned delta-opioid receptor (DOR1). DOR1 ligation by a specific DOR1 agonist, deltorphin, augmented IL-2 secretion by synergizing with signals from TCR-CD3 and CD28. Reporter gene constructs were used to map this effect of deltorphin to the AP-1- and NF-AT/AP-1-binding sites of the IL-2 promoter. Although DOR1 signaling increased [Ca2+]i, deltorphin enhanced transcriptional activity of the NF-AT/AP-1-binding site via a mechanism independent of calcineurin and distinct from the effects of elevated [Ca2+]i. Deltorphin also increased accumulation of AP-1 transcription factor complexes, suggesting that DOR1 augments IL-2 secretion by increasing the AP-1 component of the NF-AT/AP-1 transcription factor. These results advance the molecular understanding of opioid effects on lymphocytes, and in addition, demonstrate regulation of IL-2 synthesis and secretion by the novel mechanism of receptor-mediated AP-1 induction.
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Affiliation(s)
- K E Hedin
- Department of Immunology, Mayo Foundation, Rochester, MN 55905, USA
| | - M P Bell
- Department of Immunology, Mayo Foundation, Rochester, MN 55905, USA
| | - K R Kalli
- Department of Immunology, Mayo Foundation, Rochester, MN 55905, USA
| | - C J Huntoon
- Department of Immunology, Mayo Foundation, Rochester, MN 55905, USA
| | - B M Sharp
- Department of Immunology, Mayo Foundation, Rochester, MN 55905, USA
| | - D J McKean
- Department of Immunology, Mayo Foundation, Rochester, MN 55905, USA
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Abstract
Interleukin-1 (IL-1) is primarily an inflammatory cytokine, although it is capable of mediating a wide variety of effects on many different cell types. Nearly every known signal transduction pathway has been reported to be activated in response to IL-1. However, the significance of many of these signaling events is unclear, due to the use of different and sometimes unique cell lines in studying IL-1-initiated signal transduction. Complicating matters further is the lack of association in many studies between identified IL-1-induced signals and subsequent biological responses. In this article, we review what is known about IL-1 receptor signaling and, whenever possible, correlate signaling events to biological responses.
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16
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Kalli KR, Fearon DT. Binding of C3b and C4b by the CR1-like site in murine CR1. The Journal of Immunology 1994. [DOI: 10.4049/jimmunol.152.6.2899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Abstract
We determined whether the six short consensus repeats (SCRs) that are appended to the amino terminus of murine CR2 to form murine CR1 contain a binding site for C4b in addition to that for C3b, and whether these sites overlap or are distinct. Human K562 transfectant cell lines were established that stably expressed constructs encoding variable combinations of these six murine SCRs attached to the amino terminus of a truncated form of human CR2 lacking its iC3b/C3dg binding site. These cell lines, and two others expressing full-length human CR1 and SCRs lacking its iC3b/C3dg binding site. These cell lines, and two others expressing full-length human CR1 and SCRs 8-11 of the C3b binding site of human CR1, respectively, were assessed for their capacity to form rosettes with sheep E bearing rat C4b or guinea pig C3b. K562 cells with full length human CR1 formed rosettes with both EC3b and EC4b, and the cells expressing the construct with human CR1 SCRs 8-11 bound only EC3b. The murine CR1/human CR2 chimera containing murine SCRs 1-6 resembled the full length human CR1 in binding both EC3b and EC4b. Deletion of SCRs 5-6 from the murine CR1/human CR2 chimera diminished in parallel, but did not abolish, binding of EC3b and EC4b. Constructs containing SCRs 2-5, SCRs 3-6, or SCRs 2-6 lacked activity, indicating an absolute requirement for SCR-1 for binding of both C3b and C4b. Therefore, murine CR1 binds both C3b and C4b, and the sites for these ligands have similar, if not identical, amino- and carboxyl-terminal boundaries.
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Affiliation(s)
- K R Kalli
- Graduate Program in Immunology, Johns Hopkins University School of Medicine, Baltimore, MD 21205
| | - D T Fearon
- Graduate Program in Immunology, Johns Hopkins University School of Medicine, Baltimore, MD 21205
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Kalli KR, Fearon DT. Binding of C3b and C4b by the CR1-like site in murine CR1. J Immunol 1994; 152:2899-903. [PMID: 8144890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
We determined whether the six short consensus repeats (SCRs) that are appended to the amino terminus of murine CR2 to form murine CR1 contain a binding site for C4b in addition to that for C3b, and whether these sites overlap or are distinct. Human K562 transfectant cell lines were established that stably expressed constructs encoding variable combinations of these six murine SCRs attached to the amino terminus of a truncated form of human CR2 lacking its iC3b/C3dg binding site. These cell lines, and two others expressing full-length human CR1 and SCRs lacking its iC3b/C3dg binding site. These cell lines, and two others expressing full-length human CR1 and SCRs 8-11 of the C3b binding site of human CR1, respectively, were assessed for their capacity to form rosettes with sheep E bearing rat C4b or guinea pig C3b. K562 cells with full length human CR1 formed rosettes with both EC3b and EC4b, and the cells expressing the construct with human CR1 SCRs 8-11 bound only EC3b. The murine CR1/human CR2 chimera containing murine SCRs 1-6 resembled the full length human CR1 in binding both EC3b and EC4b. Deletion of SCRs 5-6 from the murine CR1/human CR2 chimera diminished in parallel, but did not abolish, binding of EC3b and EC4b. Constructs containing SCRs 2-5, SCRs 3-6, or SCRs 2-6 lacked activity, indicating an absolute requirement for SCR-1 for binding of both C3b and C4b. Therefore, murine CR1 binds both C3b and C4b, and the sites for these ligands have similar, if not identical, amino- and carboxyl-terminal boundaries.
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Affiliation(s)
- K R Kalli
- Graduate Program in Immunology, Johns Hopkins University School of Medicine, Baltimore, MD 21205
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18
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Abstract
In conclusion, it is apparent that researchers are poised at the threshold of developing inhibitors of complement activation from the molecules in the RCA family. By creating soluble forms of these protective proteins for in vivo administration, or by making transgenic animals expressing these proteins or their derivatives, it may be possible to inhibit complement-mediated pathology stemming from autoimmune disease, reperfusion injuries, and physical trauma. This technology combined with current attempts to protect allografts from cellular rejection with monoclonal antibodies against members of the integrin family of adhesion molecules [52] makes it possible that the excessive mortality due to the severe shortage of human donor organs could be overcome by the use of xenografts.
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Affiliation(s)
- K R Kalli
- Graduate Program in Immunology, Johns Hopkins University School of Medicine, Baltimore, MD 21205
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Martin DR, Yuryev A, Kalli KR, Fearon DT, Ahearn JM. Determination of the structural basis for selective binding of Epstein-Barr virus to human complement receptor type 2. J Exp Med 1991; 174:1299-311. [PMID: 1660522 PMCID: PMC2119041 DOI: 10.1084/jem.174.6.1299] [Citation(s) in RCA: 64] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Epstein-Barr virus (EBV) is an oncogenic herpesvirus that selectively infects and immortalizes human B lymphocytes. One determinant of this narrow tropism is human CR2, the only viral receptor within the superfamily of proteins that contain short consensus repeats (SCRs). Human CR2 serves as a receptor for both C3dg and the gp350/220 glycoprotein of EBV, and binds the monoclonal antibody (mAb) OKB7, which blocks binding of both ligands to the receptor. In contrast, although murine CR2 is capable of binding human C3dg and this interaction can be blocked with the mAb 7G6, it does not bind OKB7 or EBV. We have determined the structural basis for absolute specificity of EBV for human CR2 through characterization of a panel of 24 human-murine chimeric receptors, all of which bind human C3dg. The results indicate that preferential binding of EBV to human CR2 is not due to unique amino acids that are capable of binding the virus, but reflects a distinct receptor conformation that can be achieved in murine CR2 with single amino acid substitutions in two discontinuous regions of the primary structure: replacement of proline at position 15 with the corresponding serine from human CR2, and elimination of a potential N-linked glycosylation site between SCR-1 and SCR-2. Furthermore, species-specific binding of EBV, OKB7, and 7G6 can all be manipulated through substitutions among residues 8-15, suggesting that this octapeptide is part of a structural determinant that is critical for binding of both viral and natural ligands to CR2.
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Affiliation(s)
- D R Martin
- Graduate Program in Immunology, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205
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20
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Kalli KR, Hsu PH, Bartow TJ, Ahearn JM, Matsumoto AK, Klickstein LB, Fearon DT. Mapping of the C3b-binding site of CR1 and construction of a (CR1)2-F(ab')2 chimeric complement inhibitor. J Exp Med 1991; 174:1451-60. [PMID: 1836011 PMCID: PMC2119055 DOI: 10.1084/jem.174.6.1451] [Citation(s) in RCA: 66] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
CR1/CR2 chimeric receptors in which various short consensus repeats (SCRs) of CR1 were attached to CR2 were transiently expressed on COS cells, and assessed for the binding of polymerized C3b (pC3b) and anti-CR2 by immunofluorescence. Of COS cells expressing chimeras containing SCR 1-4, 1-3, 2-4, 1-2, and 2-3 of the long homologous repeats (LHRs) -B or -C, 96%, 66%, 23%, 0%, and 0%, respectively, bound pC3b. K562 cells were stably transfected with wild-type CR1, deletion mutants of CR1, and the CR1/CR2 chimeras, respectively, and assayed for binding of 125I-pC3b. The dissociation constants (Kd) for pC3b of wild-type CR1 and the LHR-BD and -CD constructs were in the range of 1.0-2.7 nM, and of the CR1/CR2 chimeras containing SCRs 1-4, 1-3, and 2-4 of LHR-B or -C were 1.8-2.4, 6-9, and 22-36 nM, respectively. The factor I-cofactor function of the CR1/CR2 chimeras paralleled the C3b-binding function of the constructs. A CR1/immunoglobulin (Ig) chimeric protein was prepared by fusing SCRs 1-4 of LHR-B to the heavy chains of a murine F(ab')2 anti-nitrophenacetyl (NP) monoclonal antibody. The (CR1)2-F(ab')2 chimera, which retained its specificity for NP, was as effective as soluble, full-length CR1 in binding pC3b, serving as a cofactor for factor I-mediated cleavage of C3b, and inhibiting activation of the alternative pathway, indicating that the bivalent expression of these SCRs reconstitutes the alternative pathway inhibitory function of CR1. The feasibility of creating CR1/Ig chimeras makes possible a new strategy of targeting complement inhibition by the use of Ig fusion partners having particular antigenic specificities.
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Affiliation(s)
- K R Kalli
- Graduate Program in Immunology, Johns Hopkins University School of Medicine, Baltimore, Maryland
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21
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Kalli KR, Ahearn JM, Fearon DT. Interaction of iC3b with recombinant isotypic and chimeric forms of CR2. J Immunol 1991; 147:590-4. [PMID: 1830068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
CR2 is a component of a signal transduction complex on B lymphocytes that augments B cell responses to Ag. We have quantitatively assessed binding by the two isotypic forms of CR2 for two of its ligands, the polymerized iC3b (p(iC3b)) fragment of C3, and gp350/220, the EBV membrane protein. The recombinant 15-SCR or 16-SCR forms of CR2 bound p(iC3b) with identical affinities. Full binding activity of CR2 for p(iC3b) was observed with a chimera comprised of SCR-1 and -2 of CR2 fused to SCR-17 through -30 of CR1. Therefore, the alternatively spliced SCR-10a has no role in binding p(iC3b), and the binding activity of wild type receptor for iC3b can be reconstituted with SCR-1 and -2 of CR2. The binding affinities of the two isoforms of CR2 for soluble gp350/220 were also similar. Additional sites in the C3c region of C3 have been postulated also to interact with CR2. However, monomeric iC3b and C3d were equally effective in inhibiting the binding of p(iC3b) to CR2, indicating that the C3c region of iC3b does not contribute to the interaction of iC3b with CR2. Finally, the relative abilities of C3b and iC3b to bind to CR1 and CR2 were compared. The conversion of C3b to iC3b generated a ligand with an approximate 100-fold decrease in affinity for CR1 and a 10-fold increased affinity for CR2, resulting in a 1000-fold greater likelihood for binding to the latter receptor that may then promote B cell activation.
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Affiliation(s)
- K R Kalli
- Graduate Program in Immunology, Johns Hopkins University School of Medicine, Baltimore, MD 21205
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22
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Kalli KR, Ahearn JM, Fearon DT. Interaction of iC3b with recombinant isotypic and chimeric forms of CR2. The Journal of Immunology 1991. [DOI: 10.4049/jimmunol.147.2.590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Abstract
CR2 is a component of a signal transduction complex on B lymphocytes that augments B cell responses to Ag. We have quantitatively assessed binding by the two isotypic forms of CR2 for two of its ligands, the polymerized iC3b (p(iC3b)) fragment of C3, and gp350/220, the EBV membrane protein. The recombinant 15-SCR or 16-SCR forms of CR2 bound p(iC3b) with identical affinities. Full binding activity of CR2 for p(iC3b) was observed with a chimera comprised of SCR-1 and -2 of CR2 fused to SCR-17 through -30 of CR1. Therefore, the alternatively spliced SCR-10a has no role in binding p(iC3b), and the binding activity of wild type receptor for iC3b can be reconstituted with SCR-1 and -2 of CR2. The binding affinities of the two isoforms of CR2 for soluble gp350/220 were also similar. Additional sites in the C3c region of C3 have been postulated also to interact with CR2. However, monomeric iC3b and C3d were equally effective in inhibiting the binding of p(iC3b) to CR2, indicating that the C3c region of iC3b does not contribute to the interaction of iC3b with CR2. Finally, the relative abilities of C3b and iC3b to bind to CR1 and CR2 were compared. The conversion of C3b to iC3b generated a ligand with an approximate 100-fold decrease in affinity for CR1 and a 10-fold increased affinity for CR2, resulting in a 1000-fold greater likelihood for binding to the latter receptor that may then promote B cell activation.
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Affiliation(s)
- K R Kalli
- Graduate Program in Immunology, Johns Hopkins University School of Medicine, Baltimore, MD 21205
| | - J M Ahearn
- Graduate Program in Immunology, Johns Hopkins University School of Medicine, Baltimore, MD 21205
| | - D T Fearon
- Graduate Program in Immunology, Johns Hopkins University School of Medicine, Baltimore, MD 21205
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23
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Conrad DH, Keegan AD, Kalli KR, Van Dusen R, Rao M, Levine AD. Superinduction of low affinity IgE receptors on murine B lymphocytes by lipopolysaccharide and IL-4. The Journal of Immunology 1988. [DOI: 10.4049/jimmunol.141.4.1091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Abstract
Recent work in both the human and murine systems has demonstrated that IL-4 is capable of specifically inducing the synthesis of the low affinity receptor for IgE (Fc epsilon RII). In addition, in conjunction with LPS, IL-4 will induce IgG1 and IgE synthesis. To analyze the correlation between Fc epsilon RII induction and IgE secretion, Fc epsilon RII and IgE levels were measured by RIA on murine splenic B cells stimulated with LPS and IL-4 over 7 days of culture. Treatment with LPS and IL-4 gave a 20- to 50-fold (day 3) "superinduction" of Fc epsilon RII levels compared with a 3- to 5-fold induction with IL-4 alone; removal of IL-4 resulted in a rapid decline in Fc epsilon RII levels. The cells expressing high Fc epsilon RII levels were determined to be blasts. Superinduction of Fc epsilon RII occurs at 10 U/ml IL-4 and remains relatively constant in the range of 10 to 1000 U/ml. In contrast, with increasing IL-4, IgE levels increase, reaching microgram levels at day 7 with 300 U/ml IL-4. Triggering the cells with anti-Ig, as expected, gave no Ig secretion, and in addition, Fc epsilon RII superinduction by IL-4 and anti-Ig was not seen. PMA is known to block Ig secretion induced by LPS. Concentrations of PMA that totally abrogated IgE secretion had no effect on Fc epsilon RII superinduction, indicating that the latter phenomena can be separated from IL-4-induced Ig secretion. Superinduction also results in higher levels of Fc epsilon RII fragment release into the media. Thus, attempts were made to influence IgE secretion by adding additional purified Fc epsilon RII fragment to the culture. The purified fragment did not have a significant influence on IgE levels in this system.
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Affiliation(s)
- D H Conrad
- Subdepartment of Immunology, Johns Hopkins University School of Medicine, Baltimore, MD 21205
| | - A D Keegan
- Subdepartment of Immunology, Johns Hopkins University School of Medicine, Baltimore, MD 21205
| | - K R Kalli
- Subdepartment of Immunology, Johns Hopkins University School of Medicine, Baltimore, MD 21205
| | - R Van Dusen
- Subdepartment of Immunology, Johns Hopkins University School of Medicine, Baltimore, MD 21205
| | - M Rao
- Subdepartment of Immunology, Johns Hopkins University School of Medicine, Baltimore, MD 21205
| | - A D Levine
- Subdepartment of Immunology, Johns Hopkins University School of Medicine, Baltimore, MD 21205
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