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Couto N, Elzanowska J, Maia J, Batista S, Pereira CE, Beck HC, Carvalho AS, Strano Moraes MC, Carvalho C, Oliveira M, Matthiesen R, Costa-Silva B. IgG+ Extracellular Vesicles Measure Therapeutic Response in Advanced Pancreatic Cancer. Cells 2022; 11:cells11182800. [PMID: 36139375 PMCID: PMC9496671 DOI: 10.3390/cells11182800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 08/06/2022] [Accepted: 08/18/2022] [Indexed: 12/05/2022] Open
Abstract
(1) Background: Pancreatic ductal adenocarcinoma (PDAC) is expected to be the second-leading cause of cancer deaths by 2030. Imaging techniques are the standard for monitoring the therapy response in PDAC, but these techniques have considerable limits, including delayed disease progression detection and difficulty in distinguishing benign from malignant lesions. Extracellular vesicle (EV) liquid biopsy is an emerging diagnosis modality. Nonetheless, the majority of research for EV-based diagnosis relies on point analyses of EVs at specified times, while longitudinal EV population studies before and during therapeutic interventions remain largely unexplored. (2) Methods: We analyzed plasma EV protein composition at diagnosis and throughout PDAC therapy. (3) Results: We found that IgG is linked with the diagnosis of PDAC and the patient’s response to therapy, and that the IgG+ EV population increases with disease progression and reduces with treatment response. Importantly, this covers PDAC patients devoid of the standard PDAC seric marker CA19.9 expression. We also observed that IgG is bound to EVs via the tumor antigen MAGE B1, and that this is independent of the patient’s inflammatory condition and IgG seric levels. (4) Conclusions: We here propose that a population analysis of IgG+ EVs in PDAC plasma represents a novel method to supplement the monitoring of the PDAC treatment response.
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Affiliation(s)
- Nuno Couto
- Champalimaud Physiology and Cancer Programme, Champalimaud Foundation, 1400-038 Lisbon, Portugal
- Digestive Unit, Champalimaud Clinical Centre, Champalimaud Foundation, 1400-038 Lisbon, Portugal
| | - Julia Elzanowska
- Champalimaud Physiology and Cancer Programme, Champalimaud Foundation, 1400-038 Lisbon, Portugal
| | - Joana Maia
- Champalimaud Physiology and Cancer Programme, Champalimaud Foundation, 1400-038 Lisbon, Portugal
| | - Silvia Batista
- Champalimaud Physiology and Cancer Programme, Champalimaud Foundation, 1400-038 Lisbon, Portugal
| | - Catarina Esteves Pereira
- Champalimaud Physiology and Cancer Programme, Champalimaud Foundation, 1400-038 Lisbon, Portugal
| | - Hans Christian Beck
- Centre for Clinical Proteomics, Department of Clinical Biochemistry and Pharmacology, Odense University Hospital, Sdr. Boulevard 29, DK-5000 Odense, Denmark
| | - Ana Sofia Carvalho
- Computational and Experimental Biology Group, iNOVA4Health, NOVA MedicalSchool|Faculdade de Ciências Médicas, NMS|FCM, Universidade Nova de Lisboa, 1150-199 Lisbon, Portugal
| | | | - Carlos Carvalho
- Digestive Unit, Champalimaud Clinical Centre, Champalimaud Foundation, 1400-038 Lisbon, Portugal
| | - Manuela Oliveira
- Department of Mathematics and CIMA-Center for Research on Mathematics and Its Applications, University of Évora, 7004-516 Evora, Portugal
| | - Rune Matthiesen
- Computational and Experimental Biology Group, iNOVA4Health, NOVA MedicalSchool|Faculdade de Ciências Médicas, NMS|FCM, Universidade Nova de Lisboa, 1150-199 Lisbon, Portugal
- Correspondence: (R.M.); (B.C.-S.); Tel.: +351-939-218-696 (R.M.); +351-210-480-134 (B.C.-S.)
| | - Bruno Costa-Silva
- Champalimaud Physiology and Cancer Programme, Champalimaud Foundation, 1400-038 Lisbon, Portugal
- Correspondence: (R.M.); (B.C.-S.); Tel.: +351-939-218-696 (R.M.); +351-210-480-134 (B.C.-S.)
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Lingg L, Rottenberg S, Francica P. Meiotic Genes and DNA Double Strand Break Repair in Cancer. Front Genet 2022; 13:831620. [PMID: 35251135 PMCID: PMC8895043 DOI: 10.3389/fgene.2022.831620] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 02/02/2022] [Indexed: 12/16/2022] Open
Abstract
Tumor cells show widespread genetic alterations that change the expression of genes driving tumor progression, including genes that maintain genomic integrity. In recent years, it has become clear that tumors frequently reactivate genes whose expression is typically restricted to germ cells. As germ cells have specialized pathways to facilitate the exchange of genetic information between homologous chromosomes, their aberrant regulation influences how cancer cells repair DNA double strand breaks (DSB). This drives genomic instability and affects the response of tumor cells to anticancer therapies. Since meiotic genes are usually transcriptionally repressed in somatic cells of healthy tissues, targeting aberrantly expressed meiotic genes may provide a unique opportunity to specifically kill cancer cells whilst sparing the non-transformed somatic cells. In this review, we highlight meiotic genes that have been reported to affect DSB repair in cancers derived from somatic cells. A better understanding of their mechanistic role in the context of homology-directed DNA repair in somatic cancers may provide useful insights to find novel vulnerabilities that can be targeted.
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Affiliation(s)
- Lea Lingg
- Institute of Animal Pathology, Vetsuisse Faculty, University of Bern, Bern, Switzerland
- Cancer Therapy Resistance Cluster, Department for BioMedical Research, University of Bern, Bern, Switzerland
| | - Sven Rottenberg
- Institute of Animal Pathology, Vetsuisse Faculty, University of Bern, Bern, Switzerland
- Cancer Therapy Resistance Cluster, Department for BioMedical Research, University of Bern, Bern, Switzerland
- Bern Center for Precision Medicine, University of Bern, Bern, Switzerland
- *Correspondence: Sven Rottenberg, ; Paola Francica,
| | - Paola Francica
- Institute of Animal Pathology, Vetsuisse Faculty, University of Bern, Bern, Switzerland
- Cancer Therapy Resistance Cluster, Department for BioMedical Research, University of Bern, Bern, Switzerland
- *Correspondence: Sven Rottenberg, ; Paola Francica,
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3
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Jay A, Reitz D, Namekawa SH, Heyer WD. Cancer testis antigens and genomic instability: More than immunology. DNA Repair (Amst) 2021; 108:103214. [PMID: 34481156 PMCID: PMC9196322 DOI: 10.1016/j.dnarep.2021.103214] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Revised: 08/13/2021] [Accepted: 08/14/2021] [Indexed: 12/29/2022]
Abstract
Cancer testis antigens or genes (CTA, CTG) are predominantly expressed in adult testes while silenced in most or all somatic tissues with sporadic expression in many human cancers. Concerted misexpression of numerous CTA/CTGs is rarely observed. This finding argues against the germ cell theory of cancer. A surprising number of CTA/CTGs are involved in meiotic chromosome metabolism and specifically in meiotic recombination. Recent discoveries with a group of CTGs established that their misexpression in somatic cells results in genomic instability by interfering with homologous recombination (HR), a DNA repair pathway for complex DNA damage such as DNA double-stranded breaks, interstrand crosslinks, and single-stranded DNA gaps. HR-deficient tumors have specific vulnerabilities and show synthetic lethality with inhibition of polyADP-ribose polymerase, opening the possibility that expression of CTA/CTGs that result in an HR-defect could be used as an additional biomarker for HR status. Here, we review the repertoire of CTA/CTGs focusing on a cohort that functions in meiotic chromosome metabolism by interrogating relevant cancer databases and discussing recent discoveries.
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Affiliation(s)
- Ash Jay
- Department of Microbiology and Molecular Genetics, University of California, Davis, Davis, CA, 95616-8665, USA
| | - Diedre Reitz
- Department of Microbiology and Molecular Genetics, University of California, Davis, Davis, CA, 95616-8665, USA
| | - Satoshi H Namekawa
- Department of Microbiology and Molecular Genetics, University of California, Davis, Davis, CA, 95616-8665, USA
| | - Wolf-Dietrich Heyer
- Department of Microbiology and Molecular Genetics, University of California, Davis, Davis, CA, 95616-8665, USA; Department of Molecular and Cellular Biology, University of California, Davis, Davis, CA, 95616-8665, USA.
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4
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Hosoya N, Miyagawa K. Synaptonemal complex proteins modulate the level of genome integrity in cancers. Cancer Sci 2021; 112:989-996. [PMID: 33382503 PMCID: PMC7935773 DOI: 10.1111/cas.14791] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2020] [Revised: 12/25/2020] [Accepted: 12/28/2020] [Indexed: 01/09/2023] Open
Abstract
The synaptonemal complex (SC) is a proteinaceous structure that is transiently formed during meiosis to promote homologous recombination between maternal and paternal chromosomes. As this structure is required only for meiotic recombination, the proteins constituting the complex are almost undetectable in normal somatic cells, but they can be expressed under the conditions in which the transcriptional machinery is deregulated. Accumulating evidence indicates that they are epigenetically expressed in cancers of various origin. Not surprisingly, in contrast to their meiotic roles, the somatic roles of the SC proteins remain to be investigated. However, it has recently been reported that SYCP3 and SYCE2 control DNA double‐strand break repair negatively and positively, respectively, suggesting that the ectopic expression of the SC proteins in somatic cells could be associated with the maintenance of genomic instability. Thus, it is highly likely that the investigation of the somatic roles of the SC proteins would improve our understanding of the mechanisms underlying tumor development.
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Affiliation(s)
- Noriko Hosoya
- Laboratory of Molecular Radiology, Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Kiyoshi Miyagawa
- Laboratory of Molecular Radiology, Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
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Safavi A, Kefayat A, Mahdevar E, Ghahremani F, Nezafat N, Modarressi MH. Efficacy of co-immunization with the DNA and peptide vaccines containing SYCP1 and ACRBP epitopes in a murine triple-negative breast cancer model. Hum Vaccin Immunother 2020; 17:22-34. [PMID: 32497486 DOI: 10.1080/21645515.2020.1763693] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Multiepitope cancer vaccines have gained lots of attention for prophylactic and therapeutic purposes in cancer patients. In our previous study, multiepitope DNA and peptide cancer vaccines consisted of the most immunodominant epitopes of ACRBP and SYCP1 antigens were designed by bioinformatic tools. In this study, the effect of prophylactic co-immunization with these DNA and peptide cancer vaccines in the 4T1 breast cancer animal model was assessed. Serum levels of the peptide-specific IgG total, IgG2a and IgG1 were measured by enzyme-linked immunosorbent assay (ELISA). Also, the efficacy of the immunized mice splenocytes' for producing interleukin-4 (IL-4) and interferon-γ (IFN-γ) was evaluated. The co-immunization caused a significant (P < .05) increase in the serum levels of IgG1 and IgG2a. The co-immunized mice splenocytes exhibited significantly enhanced IL-4 (6.6-fold) and IFN-γ (19-fold) production. Also, their lymphocytes exhibited higher proliferation rate (3-fold) and granzyme B production (6.5-fold) in comparison with the control. The prophylactic co-immunization significantly decreased the breast tumors' volume (78%) and increased the tumor-bearing mice survival time (37.5%) in comparison with the control. Taking together, prophylactic co-immunization with these multiepitope DNA and peptide cancer vaccines can activate the immune system against breast cancer. However, further experiments are needed to evaluate their efficacy from different angles.
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Affiliation(s)
- Ashkan Safavi
- Department of Biology, Science and Research Branch, Islamic Azad University , Tehran, Iran
| | - Amirhosein Kefayat
- Department of Oncology, Cancer Prevention Research Center, Isfahan University of Medical Sciences , Isfahan, Iran
| | - Elham Mahdevar
- Department of Biology, Faculty of Science and Engineering, Science and Arts University , Yazd, Iran
| | - Fatemeh Ghahremani
- Department of Medical Physics and Radiotherapy, Arak School of Paramedicine, Arak University of Medical Sciences , Arak, Iran
| | - Navid Nezafat
- Pharmaceutical Sciences Research Center, Faculty of Pharmacy, Shiraz University of Medical Sciences , Shiraz, Iran
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6
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Gantchev J, Martínez Villarreal A, Gunn S, Zetka M, Ødum N, Litvinov IV. The ectopic expression of meiCT genes promotes meiomitosis and may facilitate carcinogenesis. Cell Cycle 2020; 19:837-854. [PMID: 32223693 DOI: 10.1080/15384101.2020.1743902] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Cancer meiomitosis is defined as the concurrent activation of both mitotic and meiotic machineries in neoplastic cells that confer a selective advantage together with increased genomic instability. MeiCT (meiosis-specific cancer/testis) genes that perform specialized functions in the germline events required for the first meiotic division are ectopically expressed in several cancers. Here we describe the expression profiles of meiCT genes and proteins across a number of cancers and review the proposed mechanisms that increase aneuploidy and elicit reduction division in polyploid cells. These mechanisms are centered on the overexpression and function of meiCT proteins in cancers under various conditions that includes a response to genotoxic stress. Since meiCT genes are transcriptionally repressed in somatic cells, their target offers a promising therapeutic approach with limited toxicity to healthy tissues. Throughout the review, we provide a detailed description of the roles for each gene in the context of meiosis and we discuss proposed functions and outcomes resulting from their ectopic reactivation in cancer.
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Affiliation(s)
- Jennifer Gantchev
- Division of Dermatology, Department of Medicine, McGill University Health Centre, Montreal, QC, Canada
| | | | - Scott Gunn
- Division of Dermatology, Department of Medicine, McGill University Health Centre, Montreal, QC, Canada
| | - Monique Zetka
- Department of Biology, McGill University, Montreal, QC, Canada
| | - Neils Ødum
- Department of Microbiology and Immunology, The University of Copenhagen, Copenhagen, Denmark
| | - Ivan V Litvinov
- Division of Dermatology, Department of Medicine, McGill University Health Centre, Montreal, QC, Canada
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7
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Raza A, Merhi M, Inchakalody VP, Krishnankutty R, Relecom A, Uddin S, Dermime S. Unleashing the immune response to NY-ESO-1 cancer testis antigen as a potential target for cancer immunotherapy. J Transl Med 2020; 18:140. [PMID: 32220256 PMCID: PMC7102435 DOI: 10.1186/s12967-020-02306-y] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Accepted: 03/16/2020] [Indexed: 12/20/2022] Open
Abstract
INTRODUCTION Cancer Immunotherapy has recently emerged as a promising and effective modality to treat different malignancies. Antigenic profiling of cancer tissues and determination of any pre-existing immune responses to cancer antigens may help predict responses to immune intervention in cancer. NY-ESO-1, a cancer testis antigen is the most immunogenic antigen to date. The promise of NY-ESO-1 as a candidate for specific immune recognition of cancer comes from its restricted expression in normal adult tissue but frequent occurrence in multiple tumors including melanoma and carcinomas of lung, esophageal, liver, gastric, prostrate, ovarian, and bladder. MAIN BODY This review summarizes current knowledge of NY-ESO-1 as efficient biomarker and target of immunotherapy. It also addresses limitations and challenges preventing a robust immune response to NY-ESO-1 expressing cancers, and describes pre-clinical and clinical observations relevant to NY-ESO-1 immunity, holding potential therapeutic relevance for cancer treatment. CONCLUSION NY-ESO-1 induces strong immune responses in cancer patients but has limited objective clinical responses to NY-ESO-1 expressing tumors due to effect of competitive negative signaling from immune-checkpoints and immune-suppressive tumor microenvironment. We propose that combination therapy to increase the efficacy of NY-ESO-1 specific immunotherapeutic interventions should be explored to unleash the immune response against NY-ESO-1 expressing tumors.
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Affiliation(s)
- Afsheen Raza
- National Center for Cancer Care and Research, Hamad Medical Corporation, Doha, Qatar.,Translational Cancer Research Facility and Clinical Trial Unit, Interim Translational Research Institute, Hamad Medical Corporation, Doha, Qatar
| | - Maysaloun Merhi
- National Center for Cancer Care and Research, Hamad Medical Corporation, Doha, Qatar.,Translational Cancer Research Facility and Clinical Trial Unit, Interim Translational Research Institute, Hamad Medical Corporation, Doha, Qatar
| | - Varghese Philipose Inchakalody
- National Center for Cancer Care and Research, Hamad Medical Corporation, Doha, Qatar.,Translational Cancer Research Facility and Clinical Trial Unit, Interim Translational Research Institute, Hamad Medical Corporation, Doha, Qatar
| | | | - Allan Relecom
- National Center for Cancer Care and Research, Hamad Medical Corporation, Doha, Qatar
| | - Shahab Uddin
- Translational Research Institute, Hamad Medical Corporation, Doha, Qatar
| | - Said Dermime
- National Center for Cancer Care and Research, Hamad Medical Corporation, Doha, Qatar. .,Translational Cancer Research Facility and Clinical Trial Unit, Interim Translational Research Institute, Hamad Medical Corporation, Doha, Qatar. .,Hamad Medical Corporation, iTRI, Hamad Medical City (Building 320, Office 3-6-5), Po Box 3050, Doha, Qatar.
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8
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Das B, Senapati S. Functional and mechanistic studies reveal MAGEA3 as a pro-survival factor in pancreatic cancer cells. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2019; 38:294. [PMID: 31287009 PMCID: PMC6615156 DOI: 10.1186/s13046-019-1272-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Accepted: 06/10/2019] [Indexed: 12/17/2022]
Abstract
Background In the era of personalized therapy, functional annotation of less frequent genetic aberrations will be instrumental in adapting effective therapeutic in clinic. Overexpression of Melanoma associated antigen A3 (MAGEA3) is reported in certain pancreatic cancer (PCA) patients. The major objective of the current study was to investigate the functional role of MAGEA3 in pancreatic cancer cells (PCCs) growth and survival. Methods Using overexpression (tet-on regulated system and constitutive expression system) and knockdown (by siRNA and shRNA) approach, we dissected the mechanistic role of MAGEA3 in pancreatic cancer pathogenesis. We generated MAGEA3 expressing stable PCA cell lines and mouse primary pancreatic epithelial cells. MAGEA3 was also depleted in certain MAGEA3 positive PCCs by siRNA or shRNA. The stable cells were subjected to in vitro assays like proliferation and survival assays under growth factor deprivation or in the presence of cytotoxic drugs. The MAGEA3 overexpressing or depleted stable PCCs were evaluated in vivo using xenograft model to check the role of MAGEA3 in tumor progression. We also dissected the mechanism behind the MAGEA3 role in tumor progression using western blot analysis and CCL2 neutralization. Results MAGEA3 overexpression in PCA cells did not alter the cell proliferation but protected the cells during growth factor deprivation and also in the presence of cytotoxic drugs. However, depletion of MAGEA3 in MAGEA3 positive cells resulted in reduced cell proliferation and increased apoptosis upon growth factor deprivation and also in response to cytotoxic drugs. The in vivo xenograft study revealed that overexpression of MAGEA3 promoted tumor growth however depleting the same hindered the tumor progression. Mechanistically, our in vitro and in vivo study revealed that MAGEA3 has tumor-promoting role by reducing macro-autophagy and overexpressing pro-survival molecules like CCL2 and survivin. Conclusion Our data proves tumor-promoting role of MAGEA3 and provides the rationale to target MAGEA3 and/or its functional mediators like CCL2 for PCA, which may have a better impact in PCA therapy. Electronic supplementary material The online version of this article (10.1186/s13046-019-1272-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Biswajit Das
- Tumor Microenvironment and Animal Models Lab, Institute of Life Sciences, Bhubaneswar, Odisha, 751023, India.,Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Shantibhusan Senapati
- Tumor Microenvironment and Animal Models Lab, Institute of Life Sciences, Bhubaneswar, Odisha, 751023, India.
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9
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In Silico Analysis of Synaptonemal Complex Protein 1 (SYCP1) and Acrosin Binding Protein (ACRBP) Antigens to Design Novel Multiepitope Peptide Cancer Vaccine Against Breast Cancer. Int J Pept Res Ther 2018. [DOI: 10.1007/s10989-018-9780-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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10
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Giavina-Bianchi MH, Giavina-Bianchi Junior PF, Festa Neto C. Melanoma: tumor microenvironment and new treatments. An Bras Dermatol 2017; 92:156-166. [PMID: 28538872 PMCID: PMC5429098 DOI: 10.1590/abd1806-4841.20176183] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Accepted: 08/28/2016] [Indexed: 01/22/2023] Open
Abstract
In the recent past years, many discoveries in the tumor microenvironment have led to changes in the management of melanoma and it is rising up hopes, specially, to those in advanced stages. FDA approved seven new drugs from 2011 to 2014. They are: Vemurafenib, Dabrafenib and Trametinib, kinases inhibitors used for patients that have BRAFV600E mutation; Ipilimumab (anti-CTLA4), Pembrolizumab (anti-PD-1) and Nivolumab (anti-PD-1), monoclonal antibodies that stimulate the immune system; and Peginterferon alfa-2b, an anti-proliferative cytokine used as adjuvant therapy. In this article, we will review the molecular bases for these new metastatic melanoma therapeutic agents cited above and also analyze new molecular discoveries in melanoma study, as Cancer-Testis antigens (CT). They are capable of induce humoral and cellular immune responses in cancer patients and because of this immunogenicity and their restrict expression in normal tissues, they are considered an ideal candidate for vaccine development against cancer. Among CT antigens, NY-ESO-1 is the best characterized in terms of expression patterns and immunogenicity. It is expressed in 20-40% of all melanomas, more in metastatic lesions than in primary ones, and it is very heterogeneous inter and intratumoral. Breslow index is associate with NY-ESO-1 expression in primary cutaneous melanomas, but its relation to patient survival remains controversial.
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Affiliation(s)
| | | | - Cyro Festa Neto
- Dermatology Department of Universidade de São Paulo Medical
School (FMUSP) – São Paulo (SP), Brazil
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11
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Abstract
Melanoma-associated antigen-A (MAGE-A) and New York esophageal squamous cell cancer-1 (NY-ESO-1) are 2 cancer testis antigens (CTA) demonstrating potential for use in targeted immunotherapy. Clinical trials in melanoma and synovial sarcomas targeting these antigens in immune-based therapies have demonstrated durable tumor regression. Although protein expression of NY-ESO-1 has been assessed in a variety of cancer types, the expression of MAGE-A has not been studied in depth. In this study we analyzed MAGE-A and NY-ESO-1 expression in 314 melanoma specimens from 301 melanoma patients, 38 patients with squamous cell cancers and 111 patients with adenocarcinomas. Our results demonstrated higher expression of MAGE-A compared with NY-ESO-1 in melanomas (32% vs. 13%) and squamous cell carcinomas (45% vs. 7.9%), and higher expression of both CTAs in metastatic versus primary tumors. CTA expression in adenocarcinomas was low (MAGE-A: 10%, NY-ESO-1: 0.9%). In addition, we looked at concordance of expression among metastatic melanoma lesions within the same patient and found concordant expression in 38 of 47 patients for MAGE-A and 43 of 47 patients for NY-ESO-1. Our study demonstrated that the MAGE-A family may be of greater utility than NY-ESO-1 for targeted immunotherapy in a variety of cancer histologies, in particular metastatic melanomas and squamous cell carcinomas.
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12
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Nielsen AY, Gjerstorff MF. Ectopic Expression of Testis Germ Cell Proteins in Cancer and Its Potential Role in Genomic Instability. Int J Mol Sci 2016; 17:E890. [PMID: 27275820 PMCID: PMC4926424 DOI: 10.3390/ijms17060890] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2016] [Revised: 05/23/2016] [Accepted: 06/01/2016] [Indexed: 12/18/2022] Open
Abstract
Genomic instability is a hallmark of human cancer and an enabling factor for the genetic alterations that drive cancer development. The processes involved in genomic instability resemble those of meiosis, where genetic material is interchanged between homologous chromosomes. In most types of human cancer, epigenetic changes, including hypomethylation of gene promoters, lead to the ectopic expression of a large number of proteins normally restricted to the germ cells of the testis. Due to the similarities between meiosis and genomic instability, it has been proposed that activation of meiotic programs may drive genomic instability in cancer cells. Some germ cell proteins with ectopic expression in cancer cells indeed seem to promote genomic instability, while others reduce polyploidy and maintain mitotic fidelity. Furthermore, oncogenic germ cell proteins may indirectly contribute to genomic instability through induction of replication stress, similar to classic oncogenes. Thus, current evidence suggests that testis germ cell proteins are implicated in cancer development by regulating genomic instability during tumorigenesis, and these proteins therefore represent promising targets for novel therapeutic strategies.
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Affiliation(s)
- Aaraby Yoheswaran Nielsen
- Department of Cancer and Inflammation Research, Institute for Molecular Medicine, University of Southern Denmark, Odense DK-5000, Denmark.
| | - Morten Frier Gjerstorff
- Department of Cancer and Inflammation Research, Institute for Molecular Medicine, University of Southern Denmark, Odense DK-5000, Denmark.
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13
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Alrifai D, Sarker D, Maher J. Prospects for adoptive immunotherapy of pancreatic cancer using chimeric antigen receptor-engineered T-cells. Immunopharmacol Immunotoxicol 2015; 38:50-60. [DOI: 10.3109/08923973.2015.1100204] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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14
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Lunardi S, Muschel RJ, Brunner TB. The stromal compartments in pancreatic cancer: are there any therapeutic targets? Cancer Lett 2013; 343:147-55. [PMID: 24141189 DOI: 10.1016/j.canlet.2013.09.039] [Citation(s) in RCA: 126] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2013] [Revised: 09/25/2013] [Accepted: 09/26/2013] [Indexed: 12/16/2022]
Abstract
Pancreatic ductal adenocarcinoma (PDAC) is characterised by an abundant stromal response also known as a desmoplastic reaction. Pancreatic Stellate Cells have been identified as playing a key role in pancreatic cancer desmoplasia. There is accumulating evidence that the stroma contributes to tumour progression and to the low therapeutic response of PDAC patients. In this review we described the main actors of the desmoplastic reaction within PDAC and novel therapeutic approaches that are being tested to block the detrimental function of the stroma.
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Affiliation(s)
- Serena Lunardi
- Gray Institute for Radiation Oncology and Biology, Department of Oncology, University of Oxford, Churchill Hospital, RRI, Oxford OX3 7LJ, UK
| | - Ruth J Muschel
- Gray Institute for Radiation Oncology and Biology, Department of Oncology, University of Oxford, Churchill Hospital, RRI, Oxford OX3 7LJ, UK
| | - Thomas B Brunner
- Gray Institute for Radiation Oncology and Biology, Department of Oncology, University of Oxford, Churchill Hospital, RRI, Oxford OX3 7LJ, UK; Department of Radiation Oncology, University Hospitals Freiburg, Robert-Koch-Straße 3, 79106 Freiburg, Germany.
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Abstract
Pancreatic ductal adenocarcinoma (PDA) remains a highly lethal disease; new therapeutic modalities are urgently needed. A number of immunotherapies tested in preclinical models have shown promise. Early-phase clinical trials have demonstrated evidence of immune activation that in some cases correlates with clinical response. Moreover, recent evidence delineates the intricate role of inflammation in PDA, even at its earliest stages. Pancreatic ductal adenocarcinoma is thus ripe for immunotherapy; however, significant challenges remain before success can be realized. Future studies will need to focus on the discovery of novel PDA antigens and the identification of the multiple immune suppressive pathways within the PDA tumor microenvironment that inhibit an effective PDA-targeted immune response. Technologies are now available to rapidly advance discovery. Rapid translation of new discoveries into scientifically driven clinical trials testing combinations of immune agents will likely continue to shift the procarcinogenic tumor environment toward the most potent anticancer response.
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Neumann F, Kaddu-Mulindwa D, Widmann T, Preuss KD, Held G, Zwick C, Roemer K, Pfreundschuh M, Kubuschok B. EBV-transformed lymphoblastoid cell lines as vaccines against cancer testis antigen-positive tumors. Cancer Immunol Immunother 2013; 62:1211-22. [PMID: 23619976 PMCID: PMC11028802 DOI: 10.1007/s00262-013-1412-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2012] [Accepted: 02/28/2013] [Indexed: 12/25/2022]
Abstract
EBV-transformed lymphoblastoid cell lines (LCL) are potent antigen-presenting cells. To investigate their potential use as cancer testis antigen (CTA) vaccines, we studied the expression of 12 cancer testis (CT) genes in 20 LCL by RT-PCR. The most frequently expressed CT genes were SSX4 (50 %), followed by GAGE (45 %), SSX1 (40 %), MAGE-A3 and SSX2 (25 %), SCP1, HOM-TES-85, MAGE-C1, and MAGE-C2 (15 %). NY-ESO-1 and MAGE-A4 were found in 1/20 LCL and BORIS was not detected at all. Fifteen of 20 LCL expressed at least one antigen, 9 LCL expressed ≥2 CT genes, and 7 of the 20 LCL expressed ≥4 CT genes. The expression of CT genes did not correlate with the length of in vitro culture, telomerase activity, aneuploidy, or proliferation state. While spontaneous expression of CT genes determined by real-time PCR and Western blot was rather weak in most LCL, treatment with DNA methyltransferase 1 inhibitor alone or in combination with histone deacetylase inhibitors increased CTA expression considerably thus enabling LCL to induce CTA-specific T cell responses. The stability of the CT gene expression over prolonged culture periods makes LCL attractive candidates for CT vaccines both in hematological neoplasias and solid tumors.
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Affiliation(s)
- Frank Neumann
- Department of Internal Medicine I, José Carreras-Center for Immuno- and Gene Therapy, University of Saarland Medical School, 66421, Homburg, Saar, Germany,
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Tang D, Wang D, Yuan Z, Xue X, Zhang Y, An Y, Chen J, Tu M, Lu Z, Wei J, Jiang K, Miao Y. Persistent activation of pancreatic stellate cells creates a microenvironment favorable for the malignant behavior of pancreatic ductal adenocarcinoma. Int J Cancer 2013; 132:993-1003. [PMID: 22777597 DOI: 10.1002/ijc.27715] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2012] [Revised: 06/20/2012] [Accepted: 06/28/2012] [Indexed: 02/06/2023]
Abstract
Pancreatic ductal adenocarcinoma (PDAC) is one of the most common malignant tumors with poor prognosis due to extremely high malignancy, low rate of eligibility for surgical resection and chemoradiation resistance. Increasing evidence indicate that the interaction between activated pancreatic stellate cells (PSCs) and PDAC cells plays an important role in the development of PDAC. By producing high levels of cytokines, chemotactic factors, growth factors and excessive extracellular matrix (ECM), PSCs create desmoplasia and a hypoxic microenvironment that promote the initiation, development, evasion of immune surveillance, invasion, metastasis and resistance to chemoradiation of PDAC. Therefore, targeting the interaction between PSCs and PDAC cells may represent a novel therapeutic approach to advanced PDAC, especially therapies that target PSCs of the pancreatic tumor microenvironment.
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Affiliation(s)
- Dong Tang
- Department of Gastrointestinal Surgery, Subei People's Hospital of Jiangsu Province (Clinical Medical College of Yangzhou University), Yangzhou, People's Republic of China
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Knockdown of OY-TES-1 by RNAi causes cell cycle arrest and migration decrease in bone marrow-derived mesenchymal stem cells. Cell Biol Int 2012; 36:917-22. [DOI: 10.1042/cbi20120037] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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T cells and adoptive immunotherapy: recent developments and future prospects in gastrointestinal oncology. Clin Dev Immunol 2011; 2011:320571. [PMID: 22110523 PMCID: PMC3216375 DOI: 10.1155/2011/320571] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2011] [Accepted: 08/24/2011] [Indexed: 12/15/2022]
Abstract
Gastrointestinal oncology is one of the foremost causes of death: the gastric cancer accounts for 10.4% of cancer deaths worldwide, the pancreatic cancer for 6%, and finally, the colorectal cancer for 9% of all cancer-related deaths. For all these gastrointestinal cancers, surgical tumor resection remains the primary curative treatment, but the overall 5-year survival rate remains poor, ranging between 20-25%; the addition of combined modality strategies (pre- or postoperative chemoradiotherapy or perioperative chemotherapy) results in 5-year survival rates of only 30-35%. Therefore, many investigators believe that the potential for making significant progress lies on understanding and exploiting the molecular biology of gastrointestinal tumors to investigate new therapeutic strategies such as specific immunotherapy. In this paper we will focus on recent knowledge concerning the role of T cells and the use of T adoptive immunotherapy in the treatment of gastrointestinal cancers.
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Bauer C, Dauer M, Saraj S, Schnurr M, Bauernfeind F, Sterzik A, Junkmann J, Jakl V, Kiefl R, Oduncu F, Emmerich B, Mayr D, Mussack T, Bruns C, Rüttinger D, Conrad C, Jauch KW, Endres S, Eigler A. Dendritic cell-based vaccination of patients with advanced pancreatic carcinoma: results of a pilot study. Cancer Immunol Immunother 2011; 60:1097-107. [PMID: 21547597 PMCID: PMC11029181 DOI: 10.1007/s00262-011-1023-5] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2010] [Accepted: 04/10/2011] [Indexed: 12/13/2022]
Abstract
BACKGROUND AND AIMS Dendritic cell (DC)-based vaccination can induce antitumor T cell responses in vivo. This clinical pilot study examined feasibility and outcome of DC-based tumor vaccination for patients with advanced pancreatic adenocarcinoma. METHODS Tumor lysate of patients with pancreatic carcinoma was generated by repeated freeze-thaw cycles of surgically obtained tissue specimens. Patients were eligible for DC vaccination after recurrence of pancreatic carcinoma or in a primarily palliative situation. DC were generated from peripheral blood mononuclear cells (PBMC), loaded with autologous tumor lysate, stimulated with TNF-α and PGE(2) and injected intradermally. All patients received concomitant chemotherapy with gemcitabine. Disease response was the primary endpoint. Individual immunological responses to DC vaccination were analyzed by T cell-based immunoassays using pre- and post-vaccination samples of non-adherent PBMC. RESULTS Twelve patients received DC vaccination and concomitant chemotherapy. One patient developed a partial remission, and two patients remained in stable disease. Median survival was 10.5 months. No severe side effects were observed. Tumor-reactive T cells could be detected prior to vaccination. DC vaccination increased the frequency of tumor-reactive cells in all patients tested; however, the degree of this increase varied. To quantify the presence of tumor-reactive T cells, stimulatory indices (SI) were calculated as the ratio of proliferation-inducing capacity of lysate-loaded versus -unloaded DC. The patient with longest overall survival of 56 months had a high SI of 6.49, indicating that the presence of a pre-vaccination antitumor T cell response might be associated with prolonged survival. Five patients survived 1 year or more. CONCLUSION DC-based vaccination can stimulate an antitumoral T cell response in patients with advanced or recurrent pancreatic carcinoma receiving concomitant gemcitabine treatment.
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Affiliation(s)
- Christian Bauer
- Medizinische Klinik Innenstadt, University of Munich, München, Germany
| | - Marc Dauer
- Department of Medicine II, Saarland University Hospital, Saarland University, Homburg/Saar, Germany
| | - Samira Saraj
- Medizinische Klinik Innenstadt, University of Munich, München, Germany
| | | | - Franz Bauernfeind
- Medizinische Klinik Innenstadt, University of Munich, München, Germany
| | - Alexander Sterzik
- Medizinische Klinik Innenstadt, University of Munich, München, Germany
| | - Jana Junkmann
- Medizinische Klinik Innenstadt, University of Munich, München, Germany
| | - Veronika Jakl
- Medizinische Klinik Innenstadt, University of Munich, München, Germany
| | - Rosemarie Kiefl
- Medizinische Klinik Innenstadt, University of Munich, München, Germany
| | - Fuat Oduncu
- Medizinische Klinik Innenstadt, University of Munich, München, Germany
| | - Bertold Emmerich
- Medizinische Klinik Innenstadt, University of Munich, München, Germany
| | - Doris Mayr
- Pathologisches Institut, University of Munich, München, Germany
| | - Thomas Mussack
- Chirurgische Klinik und Poliklinik Innenstadt, University of Munich, München, Germany
| | - Christiane Bruns
- Chirurgische Klinik und Poliklinik Großhadern, University of Munich, München, Germany
| | - Dominik Rüttinger
- Chirurgische Klinik und Poliklinik Großhadern, University of Munich, München, Germany
| | - Claudius Conrad
- Chirurgische Klinik und Poliklinik Großhadern, University of Munich, München, Germany
- Massachusetts General Hospital, Harvard Medical School, Boston, MA USA
| | - Karl-Walter Jauch
- Chirurgische Klinik und Poliklinik Großhadern, University of Munich, München, Germany
| | - Stefan Endres
- Division of Clinical Pharmacology, Medizinische Klinik Innenstadt, University of Munich, München, Germany
| | - Andreas Eigler
- Medizinische Klinik Innenstadt, University of Munich, München, Germany
- Department of Internal Medicine I, Klinikum Dritter Orden, Teaching Hospital, University of Munich, Menzinger Strasse 44, 80638 München, Germany
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Lee YJ, Lee JH, Lee JC, Lee KH. Expression of MAGE A 1-6 and SSX 1-9 Genes in the Sputum and Cancer Tissue of the Lung Cancer Patients. Tuberc Respir Dis (Seoul) 2011. [DOI: 10.4046/trd.2011.70.4.315] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Affiliation(s)
| | - Jang Hoon Lee
- Department of Thoracic and Cardiovascular Surgery, Yeungnam University College of Medicine, Daegu, Korea
| | - Jung Cheul Lee
- Department of Thoracic and Cardiovascular Surgery, Yeungnam University College of Medicine, Daegu, Korea
| | - Kwan Ho Lee
- Department of Internal Medicine, Yeungnam University College of Medicine, Daegu, Korea
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The SSX family of cancer-testis antigens as target proteins for tumor therapy. Clin Dev Immunol 2010; 2010:150591. [PMID: 20981248 PMCID: PMC2963798 DOI: 10.1155/2010/150591] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2010] [Accepted: 09/01/2010] [Indexed: 01/01/2023]
Abstract
Cancer-testis antigens (CTAs) represent an expanding class of tumor-associated proteins defined on the basis of their tissue-restricted expression to testis or ovary germline cells and frequent ectopic expression in tumor tissue. The expression of CTA in MHC class I-deficient germline cells makes these proteins particularly attractive as immunotherapeutic targets because they serve as essentially tumor-specific antigens for MHC class I-restricted CD8+ T cells. Moreover, because CTAs are expressed in many types of cancer, any therapeutic developed to target these antigens might have efficacy for multiple cancer types. Of particular interest among CTAs is the synovial sarcoma X chromosome breakpoint (SSX) family of proteins, which includes ten highly homologous family members. Expression of SSX proteins in tumor tissues has been associated with advanced stages of disease and worse patient prognosis. Additionally, both humoral and cell-mediated immune responses to SSX proteins have been demonstrated in patients with tumors of varying histological origin, which indicates that natural immune responses can be spontaneously generated to these antigens in cancer patients. The current review will describe the history and identification of this family of proteins, as well as what is known of their function, expression in normal and malignant tissues, and immunogenicity.
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23
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Heller A, Zörnig I, Müller T, Giorgadze K, Frei C, Giese T, Bergmann F, Schmidt J, Werner J, Buchler MW, Jaeger D, Giese NA. Immunogenicity of SEREX-identified antigens and disease outcome in pancreatic cancer. Cancer Immunol Immunother 2010; 59:1389-400. [PMID: 20514540 PMCID: PMC11029919 DOI: 10.1007/s00262-010-0870-9] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2010] [Accepted: 05/15/2010] [Indexed: 01/06/2023]
Abstract
Despite spontaneous or vaccination-induced immune responses, pancreatic cancer remains one of the most deadly immunotherapy-resistant malignancies. We sought to comprehend the spectrum of pancreatic tumor-associated antigens (pTAAs) and to assess the clinical relevance of their immunogenicity. An autologous SEREX-based screening of a cDNA library constructed from a pancreatic T3N0M0/GIII specimen belonging to a long-term survivor (36 months) revealed 18 immunogenic pTAA. RT-PCR analysis displayed broad distribution of the identified antigens among normal human tissues. PNLIPRP2 and MIA demonstrated the most distinct pancreatic cancer-specific patterns. ELISA-based screening of sera for corresponding autoantibodies revealed that although significantly increased, the immunogenicity of these molecules was not a common feature in pancreatic cancer. QRT-PCR and immunohistochemistry characterized PNLIPRP2 as a robust acinar cell-specific marker whose decreased expression mirrored the disappearance of parenchyma in the diseased organ, but was not related to the presence of PNLIPRP2 autoantibodies. Analyses of MIA-known to be preferentially expressed in malignant cells-surprisingly revealed an inverse correlation between intratumoral gene expression and the emergence of autoantibodies. MIA(high) patients were autoantibody-negative and had shorter median survival when compared with autoantibody-positive MIA(low) patients (12 vs. 34 months). The observed pTAA spectrum comprised molecules associated with acinar, stromal and malignant structures, thus presenting novel targets for tumor cell-specific therapies as well as for approaches based on the bystander effects. Applying the concept of cancer immunoediting to interpret relationships between gene expression, antitumor immune responses, and clinical outcome might better discriminate between past and ongoing immune responses, consequently enabling prognostic stratification of patients and individual adjustment of immunotherapy.
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Affiliation(s)
- A. Heller
- Department of Surgery, University Hospital Heidelberg, INF 116, 69120 Heidelberg, Germany
| | - I. Zörnig
- Medical Oncology, National Centre of Tumor Diseases (NCT), University Hospital Heidelberg, INF 350, 69120 Heidelberg, Germany
| | - T. Müller
- Medical Oncology, National Centre of Tumor Diseases (NCT), University Hospital Heidelberg, INF 350, 69120 Heidelberg, Germany
| | - K. Giorgadze
- Department of Surgery, University Hospital Heidelberg, INF 116, 69120 Heidelberg, Germany
| | - C. Frei
- Medical Oncology, National Centre of Tumor Diseases (NCT), University Hospital Heidelberg, INF 350, 69120 Heidelberg, Germany
| | - T. Giese
- Institute of Immunology, University Hospital Heidelberg, INF 305, 69120 Heidelberg, Germany
| | - F. Bergmann
- Institute of Pathology, University Hospital Heidelberg, INF 220, 69120 Heidelberg, Germany
| | - J. Schmidt
- Department of Surgery, University Hospital Heidelberg, INF 116, 69120 Heidelberg, Germany
| | - J. Werner
- Department of Surgery, University Hospital Heidelberg, INF 116, 69120 Heidelberg, Germany
| | - M. W. Buchler
- Department of Surgery, University Hospital Heidelberg, INF 116, 69120 Heidelberg, Germany
| | - D. Jaeger
- Medical Oncology, National Centre of Tumor Diseases (NCT), University Hospital Heidelberg, INF 350, 69120 Heidelberg, Germany
| | - N. A. Giese
- Department of Surgery, University Hospital Heidelberg, INF 116, 69120 Heidelberg, Germany
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Fan R, Huang W, Xiao SW, Luo B, He SJ, Luo GR, Xie XX. OY-TES-1 expression and serum immunoreactivity in hepatocellular carcinoma. Shijie Huaren Xiaohua Zazhi 2009; 17:3307-3312. [DOI: 10.11569/wcjd.v17.i32.3307] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate OY-TES-1 expression and serum immunoreactivity in human hepatocellular carcinoma (HCC) and explore the possibility of using OY-TES-1 as a target for immunotherapy and auxiliary diagnosis of HCC.
METHODS: The expression of OY-TES-1 mRNA and protein was detected by real-time PCR and immunohistochemistry, respectively. The presence of serum OY-TES-1 antibody in normal individuals and patients with HCC or hepatocirrhosis was determined by enzyme-linked immunosorbent assay (ELISA) using purified OY-TES-1 as the antigen. The clinical significance of OY-TES-1 expression and serum immunoreactivity in HCC was then analyzed.
RESULTS: The positive rates of OY-TES-1 mRNA expression in HCC and tumor-adjacent tissue were 73.21% (41/56) and 64.86% (24/37), respectively, showing no significant difference (P > 0.05). The expression level of OY-TES-1 mRNA in HCC tissue was significantly higher than that in tumor-adjacent tissue (P < 0.05). The expression level of OY-TES-1 mRNA was correlated with histological grade of HCC. The positive rate of OY-TES-1 protein expression in HCC tissue was 40% (4/10). The positive rate of serum OY-TES-1 antibody was 20% in HCC patients, while no serum reactivity to OY-TES-1 was detected in 76 normal individuals and 17 patients with hepatocirrhosis. No correlation was found between the presence of OY-TES-1 antibody and clinical and pathological parameters in HCC.
CONCLUSION: OY-TES-1 shows high-level expression and high serum immunoreactivity in HCC and is therefore a potential target for antigen-specific immunotherapy and auxiliary diagnosis of HCC.
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Legoffic A, Calvo EL, Barthet M, Delpero JR, Dagorn JC, Iovanna JL. Identification of genomic alterations associated with the aggressiveness of pancreatic cancer using an ultra-high-resolution CGH array. Pancreatology 2009; 9:267-72. [PMID: 19407481 DOI: 10.1159/000212092] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2008] [Accepted: 07/03/2008] [Indexed: 12/11/2022]
Abstract
BACKGROUND Genomic alterations present in pancreatic adenocarcinoma have been described only partially. In addition, the relations between these alterations and the aggressiveness of the phenotype remain unknown. METHODS Genomic DNA and total RNA from 5 pancreatic cell lines, of which 2 have an aggressive phenotype and are gemcitabine-resistant (Mia-Paca2 and Panc-1), and 3 less aggressive and gemcitabine-sensitive (Capan-1, Capan-2 and BxPC3), have been purified. DNA abnormalities have been analyzed using an ultra-high-resolution CGH array and mRNA expression was studied with an Affymetrix GeneChip expression array. RESULTS We identified 573 amplified and 30 deleted genes common to all 5 cell lines. Some of them have already been described, whereas other genes, implicated in signal transduction, apoptosis, cell cycle or cell migration, are described for the first time as being related to this cancer. Comparison of genomic abnormalities between the 2 most aggressive and the 3 less aggressive cell lines led to the identification of 368 genes specifically amplified in the aggressive cell lines. However, no specific gene deletion seems to be associated with the aggressive phenotype. CONCLUSION Using a high-resolution approach, we could precisely describe the genomic alterations associated with pancreatic adenocarcinoma and determine those associated with an aggressive phenotype.
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Affiliation(s)
- Aude Legoffic
- INSERM U.624, Stress Cellulaire, Parc Scientifique et Technologique de Luminy, Marseille, France
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Kleeff J, Beckhove P, Esposito I, Herzig S, Huber PE, Löhr JM, Friess H. Pancreatic cancer microenvironment. Int J Cancer 2007; 121:699-705. [PMID: 17534898 DOI: 10.1002/ijc.22871] [Citation(s) in RCA: 149] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Pancreatic ductal adenocarcinoma remains an extremely aggressive malignancy that is virtually therapy-resistant and has therefore one of the worst prognoses of all human cancers. The focus of research, which had been placed mostly on genetic and epigenetic alterations of the cancer cells themselves, has shifted gradually towards the microenvironment. The cancer microenvironment consists of various components, including fibroblasts, endothelial cells, immune cells, and endocrine cells, that interact with each other and the cancer cells in a complex fashion. This interplay has implications for pancreatic cancer cell growth, migration and invasion, angiogenesis, and immunological recognition of cancer cells. Evidence is accumulating that the cancer microenvironment plays an active role in disease progression, and efforts are being made to target this interplay between cancer cells and host cells to improve the outcome of this deadly disease.
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Affiliation(s)
- Jörg Kleeff
- Department of General Surgery, Division of Pancreatic Surgery and Molecular Pancreatic Research, University of Heidelberg, Heidelberg, Germany
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27
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Schmitz-Winnenthal FH, Galindo-Escobedo LV, Rimoldi D, Geng W, Romero P, Koch M, Weitz J, Krempien R, Niethammer AG, Beckhove P, Buchler MW, Z'graggen K. Potential target antigens for immunotherapy in human pancreatic cancer. Cancer Lett 2007; 252:290-8. [PMID: 17320278 DOI: 10.1016/j.canlet.2007.01.003] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2006] [Revised: 01/02/2007] [Accepted: 01/05/2007] [Indexed: 11/24/2022]
Abstract
BACKGROUND To be effective and selective, immunotherapy ideally targets specifically tumor cells and spares normal tissues. Identification of tumor specific antigens is a prerequisite to establish an effective immunotherapy. Still very little is known about the expression of tumor-related antigens in pancreatic neoplasms. Cancer Testis antigens (CT) are antigens shared by a variety of malignant tumors, but not by normal tissues with the exception of germ cells in testis. Restricted expression in neoplastic tissues and inherent immunogenic features make CT antigens ideal for use in immunotherapy. We analyzed the expression of a selected panel of nine CT antigens that have been proven to elicit an efficient immunogenic response in other malignancies. In addition we analyzed the expression of HERV-K-MEL, an immunogenic antigen of viral origin. METHODS Pancreatic adenocarcinoma tumor samples (n=130) were obtained intraoperatively, control tissues (n=23) were collected from cadaveric donor and from patients with chronic pancreatitis. Tumor-associated antigen expression of MAGE-A1, MAGE-A3, MAGE-A4, MAGE-A10, LAGE-1, NY-ESO-1, SCP-1, SSX-2, SSX-4 and HERV-K-MEL was assessed by PCR. Sequencing of PCR products were performed to assess the expression of SSX-4 in neoplastic and normal pancreatic tissues. RESULTS Three of 10 tested antigens were expressed in over 10% of malignant pancreatic tissue samples. SSX-4 was found positive in 30% of cases, SCP-1 in 19% and HERV-K-MEL in 23% of cases. No expression of CT antigens was found in non-malignant pancreatic tissue with the exception of SSX-4 and and SSX-2. CONCLUSIONS Fifty two percentage of the analyzed tissues expressed at least one CT antigen. The concomitant expression of SSX-4 in both malignant and non-malignant pancreatic tissue is a new finding which may raise concerns for immunotherapy. However, HERV-K-MEL is expressed with a relatively high prevalence and may be a candidate for specific immunotherapy in a large subgroup of pancreatic cancer patients. This study advocates the analysis of patients with regard to their immunogenic profile before the onset of antigen-specific immunotherapy.
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Grizzi F, Franceschini B, Hamrick C, Frezza EE, Cobos E, Chiriva-Internati M. Usefulness of cancer-testis antigens as biomarkers for the diagnosis and treatment of hepatocellular carcinoma. J Transl Med 2007; 5:3. [PMID: 17244360 PMCID: PMC1797003 DOI: 10.1186/1479-5876-5-3] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2006] [Accepted: 01/23/2007] [Indexed: 12/11/2022] Open
Abstract
Despite advances in our cellular and molecular knowledge, hepatocellular carcinoma (HCC) remains one of the major public health problems throughout the world. It is now known to be highly heterogeneous: it encompasses various pathological entities and a wide range of clinical behaviors, and is underpinned by a complex array of gene alterations that affect supra-molecular processes. Four families of HCC tumour markers have been recently proposed: a) onco-fetal and glycoprotein antigens; b) enzymes and iso-enzymes; c) cytokines and d) genes. A category of tumour-associated antigens called cancer-testis (CT) antigens has been identified and their encoding genes have been extensively investigated. CT antigens are expressed in a limited number of normal tissues as well as in malignant tumors of unrelated histological origin, including the liver. Given that cancers are being recognized as increasingly complex, we here review the role of CT antigens as liver tumour biomarkers and their validation process, and discuss why they may improve the effectiveness of screening HCC patients and help in determining the risk of developing HCC.
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Affiliation(s)
- Fabio Grizzi
- Laboratories of Quantitative Medicine, Istituto Clinico Humanitas IRCCS, Via Manzoni 56, 20089 Rozzano, Milan, Italy
| | - Barbara Franceschini
- Laboratories of Quantitative Medicine, Istituto Clinico Humanitas IRCCS, Via Manzoni 56, 20089 Rozzano, Milan, Italy
| | - Cody Hamrick
- Department of Microbiology & Immunology, Texas Tech University Health Science Center and Southwest Cancer Treatment and Research Center, 3601 4th St., 79430 Lubbock, Texas, USA
- Department of Hematology & Oncology, Texas Tech University Health Science Center and Southwest Cancer Treatment and Research Center, 3601 4th St., 79430 Lubbock, Texas, USA
| | - Eldo E Frezza
- Department of Microbiology & Immunology, Texas Tech University Health Science Center and Southwest Cancer Treatment and Research Center, 3601 4th St., 79430 Lubbock, Texas, USA
- Department of Surgery, Texas Tech University Health Science Center and Southwest Cancer Treatment and Research Center, 3601 4th St., 79430 Lubbock, Texas, USA
| | - Everardo Cobos
- Department of Microbiology & Immunology, Texas Tech University Health Science Center and Southwest Cancer Treatment and Research Center, 3601 4th St., 79430 Lubbock, Texas, USA
- Department of Hematology & Oncology, Texas Tech University Health Science Center and Southwest Cancer Treatment and Research Center, 3601 4th St., 79430 Lubbock, Texas, USA
| | - Maurizio Chiriva-Internati
- Department of Microbiology & Immunology, Texas Tech University Health Science Center and Southwest Cancer Treatment and Research Center, 3601 4th St., 79430 Lubbock, Texas, USA
- Department of Hematology & Oncology, Texas Tech University Health Science Center and Southwest Cancer Treatment and Research Center, 3601 4th St., 79430 Lubbock, Texas, USA
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Gnjatic S, Nishikawa H, Jungbluth AA, Güre AO, Ritter G, Jäger E, Knuth A, Chen YT, Old LJ. NY-ESO-1: review of an immunogenic tumor antigen. Adv Cancer Res 2006; 95:1-30. [PMID: 16860654 DOI: 10.1016/s0065-230x(06)95001-5] [Citation(s) in RCA: 267] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
In the 9 years since its discovery, cancer-testis antigen NY-ESO-1 has made one of the fastest transitions from molecular, cellular, and immunological description to vaccine and immunotherapy candidate, already tested in various formulations in more than 30 clinical trials worldwide. Its main characteristic resides in its capacity to elicit spontaneous antibody and T-cell responses in a proportion of cancer patients. An overview of immunological findings and immunotherapeutic approaches with NY-ESO-1, as well the role of regulation in NY-ESO-1 immunogenicity, is presented here.
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Affiliation(s)
- Sacha Gnjatic
- Ludwig Institute for Cancer Research, New York Branch at Memorial Sloan-Kettering Cancer Center, New York 10021, USA
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Neesse A, Gangeswaran R, Luettges J, Feakins R, Weeks ME, Lemoine NR, Crnogorac-Jurcevic T. Sperm-associated antigen 1 is expressed early in pancreatic tumorigenesis and promotes motility of cancer cells. Oncogene 2006; 26:1533-45. [PMID: 16983343 DOI: 10.1038/sj.onc.1209961] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Sperm-associated antigen 1 (SPAG1) was recently identified in a rare form of infertility where anti-SPAG1 antibodies derived from the serum of an infertile woman were reported to cause sperm agglutination. Except for its expression and potential role in spermatogenesis, the function of SPAG1 is completely unknown. The unexpected finding of high levels of SPAG1 expression in pancreatic adenocarcinoma compared to normal pancreatic tissue in our previous cDNA array experiments prompted us to look in more detail at the expression and role of this gene in a panel of normal and malignant human tissues as well as in a larger series of pancreatic cancer specimens. We have generated an SPAG1-specific monoclonal antibody and showed high levels of SPAG1 protein in testis and in a large proportion of pancreatic ductal adenocarcinomas (PDAC). In the latter, SPAG1 expression was predominantly cytoplasmic and confined to malignant cells. Furthermore, the extent and intensity of SPAG1 expression was shown to be associated with stage and tumour nodal status, while analysis of precursor lesions, pancreatic intraepithelial neoplasias (PanINs), demonstrated its increased immunoreactivity with increasing PanIN grade, suggesting that SPAG1 is a novel marker of PDAC progression. Immunocytochemical analysis demonstrated colocalization of SPAG1 with microtubules, and their association was confirmed by co-immunoprecipitation; subsequent motility assays further substantiated a potential role of SPAG1 in cancer cell motility. Combined with the finding of its early expression in PDAC development, our data suggest that SPAG1 could contribute to the early spread and poor prognosis of pancreatic adenocarcinoma.
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Affiliation(s)
- A Neesse
- Cancer Research UK Molecular Oncology Unit, Barts and the London School of Medicine and Dentistry, Queen Mary's University, John Vane Science Building, Charterhouse Square, London, UK
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31
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Nicholaou T, Ebert L, Davis ID, Robson N, Klein O, Maraskovsky E, Chen W, Cebon J. Directions in the immune targeting of cancer: lessons learned from the cancer-testis Ag NY-ESO-1. Immunol Cell Biol 2006; 84:303-17. [PMID: 16681828 DOI: 10.1111/j.1440-1711.2006.01446.x] [Citation(s) in RCA: 90] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Since the early 1990s, numerous cancer Ag have been defined and for a handful of these there is now some clinical experience, which has made it possible to assess their value as targets for cancer immunotherapy. The cancer-testis Ag have been particularly attractive because their expression is limited to cancer and virtually no non-malignant cells apart from germ cells and trophoblast. Among these, NY-ESO-1 has been the focus of our attention. The exceptional immunogenicity of this Ag coupled with its widespread distribution among many cancer types make it a very good vaccine candidate, with the potential to be used in vaccines against many types of malignancies. This article reviews emerging knowledge about the biology of NY-ESO-1 and experience with the early clinical development of vaccines directed against NY-ESO-1. These early studies have yielded a wealth of information about the immunology of NY-ESO-1 and set the scene for future clinical strategies for immune targeting of cancer.
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Affiliation(s)
- Theo Nicholaou
- Ludwig Institute for Cancer Research, Cancer Vaccine Programme, Austin Hospital, Victoria, Australia
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32
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Kim J, Reber HA, Hines OJ, Kazanjian KK, Tran A, Ye X, Amersi FF, Martinez SR, Dry SM, Bilchik AJ, Hoon DSB. The clinical significance of MAGEA3 expression in pancreatic cancer. Int J Cancer 2006; 118:2269-75. [PMID: 16331618 DOI: 10.1002/ijc.21656] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The MAGEA gene family that encodes cancer testis antigens is differentially expressed in many cancers. Though MAGEA3 expression has been detected in gastrointestinal malignancies, its role in pancreatic ductal adenocarcinoma (PDAC) has not been well established. We assessed 57 patients who underwent intent-to-cure surgery for PDAC. Total RNA from paraffin-embedded pancreatic tumors was extracted and assessed for MAGEA3 gene expression by an optimized probe-based quantitative real-time RT-PCR (qRT) assay. MAGEA3 gene expression was detected by qRT in 25 (44%) patients. For the entire cohort, detection of MAGEA3 expression was associated with significantly decreased overall survival (median, 16 vs 33 months; log-rank, p = 0.032). When clinicopathologic factors, including age, gender, stage, tumor extent, lymph node metastasis, tumor grade, perineural invasion and lymphovascular invasion were assessed by univariate analysis, MAGEA3 gene expression and tumor grade were significant prognostic factors for poor survival (HR 2.1, 95% CI: 1.0-4.4, p = 0.041; and HR 3.7, 95% CI: 1.8-7.6, p = 0.0004, respectively). Immunohistochemistry (IHC) was performed and confirmed MAGEA3 protein in PDAC specimens. In conclusion, MAGEA3 is differentially expressed in patients with PDAC; its expression correlates with significantly worse survival. Molecular assessment for MAGEA3 should be considered to improve prognostic evaluation and to identify eligible patients for potential immune-based therapy.
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Affiliation(s)
- Joseph Kim
- Gastrointestinal Research Section, Department of Molecular Oncology, John Wayne Cancer Institute, Saint John's Health Center, Santa Monica, CA 90404, USA
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Okada T, Akada M, Fujita T, Iwata T, Goto Y, Kido K, Okada T, Matsuzaki Y, Kobayashi K, Matsuno S, Sunamura M, Kawakami Y. A novel cancer testis antigen that is frequently expressed in pancreatic, lung, and endometrial cancers. Clin Cancer Res 2006; 12:191-7. [PMID: 16397042 DOI: 10.1158/1078-0432.ccr-05-1206] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
PURPOSE To isolate cancer testis antigens that are expressed in pancreatic cancers and may be useful in clinical applications. EXPERIMENTAL DESIGN To efficiently isolate cancer testis antigens, a testis cDNA library was immunoscreened (SEREX) with serum from a patient with pancreatic ductal adenocarcinoma. The expression of isolated antigens in various cancer cell lines and tissues was evaluated by reverse transcription-PCR and Northern blot analyses. The immunogenicity of the antigen in cancer patients was evaluated by detection of the IgG antibody in sera from patients with various cancers. RESULTS Of the three clones isolated through screening of a total of 2 x 10(6) cDNA library clones, one clone (KU-CT-1) was found to be expressed in various cancers but only in testis among normal tissues, indicating that it was a novel cancer testis antigen. The KU-CT-1 gene is located on chromosome 10p12 and produces two splice variants, which encode proteins of 397 and 872 amino acids, respectively. KU-CT-1 was expressed in pancreatic cancer tissues (3 of 9, 33%), lung cancer tissues (9 of 24, 38%), and endometrial cancer tissues (7 of 11, 64%). Specific serum IgG antibodies were detected in 3 of 20 pancreatic cancer patients, 2 of 12 endometrial cancer patients, 1 of 18 colon cancer patients, and 1 of 10 prostate cancer patients but not detected in 30 healthy individuals. CONCLUSIONS KU-CT-1 is a new cancer testis antigen that is expressed in pancreatic, lung, and endometrial cancers and may be useful for diagnosis and immunotherapy for patients with various cancers.
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Affiliation(s)
- Takaho Okada
- Division of Cellular Signaling, Institute for Advanced Medical Research, Keio University School of Medicine, Tokyo, Japan
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Mischo A, Kubuschok B, Ertan K, Preuss KD, Romeike B, Regitz E, Schormann C, de Bruijn D, Wadle A, Neumann F, Schmidt W, Renner C, Pfreundschuh M. Prospective study on the expression of cancer testis genes and antibody responses in 100 consecutive patients with primary breast cancer. Int J Cancer 2006; 118:696-703. [PMID: 16094643 DOI: 10.1002/ijc.21352] [Citation(s) in RCA: 68] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
To determine the expression of cancer testis (CT) genes and antibody responses in a nonselected population of patients with primary breast cancer, we investigated the composite expression of 11 CT genes by RT-PCR in fresh biopsies of 100 consecutive cases of primary breast carcinoma and by immunohistology in selected RT-PCR-positive cases. Antibody responses against 7 CT antigens were analyzed using recombinant antigen expression on yeast surface. In 98 evaluable cases, SCP-1 and SSX-4 were expressed most frequently (both 65%), followed by HOM-TES-85/CT-8 (47%), GAGE (26%), SSX-1 (20%), NY-ESO-1 (13%), MAGE-3 (11%), SSX-2 (8%), CT-10 (7%), MAGE-4 (4%) and CT-7 (1%). One CT gene was expressed by 90% of the cases; 79% expressed > or =2, 48% > or =3, 29% > or =4, 12% > or =5, 6% > or =6, 3% > or =7, 2% > or =8 and one case coexpressed 9 antigens. Of 100 serum samples screened for CT antigen-specific antibodies, antibodies against NY-ESO-1 were detected in 4 patients, against SCP-1 in 6 patients and against SSX-2 in 1 patient, while no antibodies were detected against MAGE-3, CT-7 and CT-10. Expression of CT genes or antibody responses was not correlated with clinical parameters (menopausal status, tumor size, nodal involvement, grading, histology and estrogen receptor status) or the demonstration of CT gene expression at the protein level, by immunohistology. Our results show that breast carcinomas are among the tumors with the most frequent expression of CT antigens, rendering many patients potential candidates for vaccine trials.
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MESH Headings
- Antibodies, Neoplasm/immunology
- Antibody Formation
- Antigens, Neoplasm/genetics
- Antigens, Neoplasm/immunology
- Antigens, Neoplasm/metabolism
- Biomarkers, Tumor/genetics
- Biomarkers, Tumor/immunology
- Biomarkers, Tumor/metabolism
- Biopsy
- Breast Neoplasms/genetics
- Breast Neoplasms/immunology
- Breast Neoplasms/metabolism
- Carcinoma, Ductal, Breast/genetics
- Carcinoma, Ductal, Breast/immunology
- Carcinoma, Ductal, Breast/metabolism
- Carcinoma, Lobular/genetics
- Carcinoma, Lobular/immunology
- Carcinoma, Lobular/metabolism
- Female
- Gene Expression Regulation, Neoplastic
- Humans
- Male
- Neoplasm Invasiveness/immunology
- Neoplasm Invasiveness/pathology
- Prospective Studies
- RNA, Messenger
- RNA, Neoplasm
- Receptors, Estrogen/metabolism
- Reverse Transcriptase Polymerase Chain Reaction
- Testis/metabolism
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Affiliation(s)
- Axel Mischo
- Department of Internal Medicine I, University of Saarland Medical School, Homburg/Saar, Germany
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Wadle A, Kubuschok B, Imig J, Wuellner B, Wittig C, Zwick C, Mischo A, Waetzig K, Romeike BFM, Lindemann W, Schilling M, Pfreundschuh M, Renner C. Serological immune response to cancer testis antigens in patients with pancreatic cancer. Int J Cancer 2006; 119:117-25. [PMID: 16432832 DOI: 10.1002/ijc.21744] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Serological screening approaches have allowed for the identification of a large number of potentially relevant tumor antigens in cancer patients. Within this group, cancer testis antigens represent promising targets for cancer immunotherapy, since they are widely expressed in a variety of human cancer entities. In pancreatic cancer, however, there are only few data available about the expression pattern and serological response to cancer testis antigens and other serological-defined tumor antigens. Therefore, we investigated the IgG antibody response against 11 cancer testis antigens (SCP-1, GAGE, LAGE-1a,-1b, CT-7, NY-ESO-1, SSX-1-5) recombinantly expressed on yeast surface (RAYS) in patients with pancreatic cancer (n = 96), chronic pancreatitis (n = 18) and healthy donors (n = 48). We found in 14% of all patients antibody responses to SCP-1, but not to other cancer testis antigens (GAGE, LAGE-1a,-1b, CT-7, NY-ESO-1, SSX-1-5). Antibody response correlated with the expression of SCP-1 in the primary tumor of the respective patient as shown by RT-PCR, immunohistochemistry and Western blot. In contrast, no serological response to cancer testis antigens was observed in healthy donors. The humoral immune response against SCP-1 was associated with the size of tumor, but not with other clinico-pathological parameters such as histology, stage, presence of lymph node metastases, grading, age, gender or gemcitabine treatment. In conclusion, antibody response to cancer testis antigen SCP-1 is found in a proportion of pancreatic carcinoma patients. These results indicate that identification of additional tumor antigens by serological screening of tumor cDNA expression libraries by RAYS is a promising goal in pancreatic cancer.
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Affiliation(s)
- Andreas Wadle
- Department of Internal Medicine I, University of Saarland Medical School, Homburg/Saar, Germany
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Grunwald C, Koslowski M, Arsiray T, Dhaene K, Praet M, Victor A, Morresi-Hauf A, Lindner M, Passlick B, Lehr HA, Schäfer SC, Seitz G, Huber C, Sahin U, Türeci O. Expression of multiple epigenetically regulated cancer/germline genes in nonsmall cell lung cancer. Int J Cancer 2006; 118:2522-8. [PMID: 16353146 DOI: 10.1002/ijc.21669] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Cancer/germline (CG) antigens represent promising targets for widely applicable mono- and multiantigen cancer vaccines for nonsmall cell lung cancer (NSCLC). Since little is known about their composite expression in this tumor type, we analyzed 7 CG genes (MAGE-A3, NY-ESO-1, LAGE-1, BRDT, HOM-TES-85, TPX-1 and LDHC) in 102 human NSCLC specimens. About 81% of NSCLC express at least 1 and half of the specimen at least 2 CG genes. Activation of most of these genes occurs more frequently in squamous cell cancer than in adenocarcinomas. Even though we found all genes but one to be regulated by genomic methylation, not all of them are co-expressed. In particular, combining CG genes not localized on the X-chromosome may provide effective treatment for an extended number of patients.
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Affiliation(s)
- Carolin Grunwald
- Department of Internal Medicine III, Johannes Gutenberg-University, Langenbeckstr. 1, 55131 Mainz, Germany, and University Hospital Ghent, Belgium
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37
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Neumann F, Wagner C, Preuss KD, Kubuschok B, Schormann C, Stevanovic S, Pfreundschuh M. Identification of an epitope derived from the cancer testis antigen HOM-TES-14/SCP1 and presented by dendritic cells to circulating CD4+ T cells. Blood 2005; 106:3105-13. [PMID: 16030183 DOI: 10.1182/blood-2005-04-1487] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Because of their frequent expression in a wide spectrum of malignant tumors but not in normal tissue except testis, cancer testis antigens are promising targets. However, except for HOM-TES-14/SCP1, their expression in malignant lymphomas is rare. SCP1 (synaptonemal complex protein 1) has been shown to elicit antibody responses in the autologous host, but no T-cell responses against HOM-TES-14/SCP1 have been reported. Using the SYFPEITHI algorithm, we selected peptides with a high binding affinity to major histocompatibility complex class 2 (MHC 2) molecules. The pentadecamer epitope p635-649 induced specific CD4+ T-cell responses that were shown to be restricted by HLA-DRB1*1401. The responses could be blocked by preincubation of T cells with anti-CD4 and antigen-presenting cells with anti-HLA-DR, respectively, proving the HLA-DR-restricted presentation of p635-649 and a CD4+ T-cell-mediated effector response. Responding CD4+ cells did not secrete interleukin-5 (IL-5), indicating that they belong to the T(H)1 subtype. The natural processing and presentation of p635-649 were demonstrated by pulsing autologous and allogeneic dendritic cells with a protein fragment covering p635-649. Thus, p635-649 is the first HOM-TES-14/SCP1-derived epitope to fulfill all prerequisites for use as a peptide vaccine in patients with HOM-TES-14/SCP1-expressing tumors, which is the case in two thirds of peripheral T-cell lymphomas.
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Affiliation(s)
- Frank Neumann
- Medizinische Klinik I, Saarland University Medical School, D-66421 Homburg/Saar, Germany
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