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Misir Z, Glavčić G, Janković S, Kruljac I, Čugura-Filipović J, Čimić K, Ulamec M. The role of the NY-ESO-1 in the prognosis of gastric cancer. BIOMOLECULES & BIOMEDICINE 2023; 24:813-820. [PMID: 38153439 PMCID: PMC11293239 DOI: 10.17305/bb.2023.9937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 12/17/2023] [Accepted: 12/28/2023] [Indexed: 12/29/2023]
Abstract
Gastric cancer (GC) is one of the most common malignancies worldwide and the fourth leading cause of cancer-related deaths. GC is a multifactorial disease influenced by both environmental and genetic factors. Its most critical features include invasiveness and high metastatic potential. Metastasis is a complex process, and our understanding of the mechanisms involved remains incomplete. Growing evidence suggests that cancer-testis antigens (CTAs) play a crucial role in the metastatic potential of various tumors. Several studies have linked CTA expression with lower tumor differentiation, higher metastatic potential, and poor chemotherapy response. New York esophageal squamous cell carcinoma-1 (NY-ESO-1) antigen, part of the CTA group, is expressed in tumor tissues, while its expression in normal tissues is restricted to spermatogonia. This study aimed to determine the expression of NY-ESO-1 in primary adenocarcinoma of the stomach, both with and without metastasis in regional lymph nodes, and to compare it with TNM stage, age, gender, and survival. We analyzed GC tissue from 53 node-negative and 55 node-positive primary gastric carcinoma patients for NY-ESO-1 expression using immunohistochemical assay. The results were correlated with clinicopathological parameters and survival. Patients with positive NY-ESO-1 expression in primary tumors had a median survival of 19.0 months (range 14.1-24.0), in contrast to those with negative expression, who had a median survival of 52.0 months (range 0.0-133.3) (chi-square 7.99, P=0.005). T status, N status, and NY-ESO-1 expression were all independently associated with shorter survival. No significant difference in NY-ESO-1 expression in primary tumors was observed concerning lymph node metastasis status. In summary, our findings suggest that increased expression of NY-ESO-1 could potentially serve as a prognostic biomarker for GC.
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Affiliation(s)
- Zvonimir Misir
- Department of Surgery, University Hospital Center “Sestre milosrdnice”, Zagreb, Croatia
| | - Goran Glavčić
- Department of Surgery, University Hospital Center “Sestre milosrdnice”, Zagreb, Croatia
| | - Suzana Janković
- Department of Surgery, University Hospital Center “Sestre milosrdnice”, Zagreb, Croatia
| | - Ivan Kruljac
- Department of Clinical Research and Biostatistics, Poliklinika Solmed d.o.o., Zagreb, Croatia
| | | | - Kristina Čimić
- Department of Gynecology, General Hospital “Dr Ivo Pedišić”, Sisak, Croatia
| | - Monika Ulamec
- Clinical Department of Pathology and Cytology “Ljudevit Jurak”, University Hospital Center “Sestre milosrdnice”, Zagreb, Croatia
- Department of Pathology and Center of Excellence for Reproductive and Regenerative Medicine, School of Medicine, University of Zagreb, Zagreb, Croatia
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2
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Lisica Šikić N, Petrić Miše B, Tomić S, Spagnol G, Matak L, Juretić A, Spagnoli G. MAGE-A10 Protein Expression in Advanced High Grade Serous Ovarian Cancer Is Associated with Resistance to First-Line Platinum-Based Chemotherapy. Cancers (Basel) 2023; 15:4697. [PMID: 37835391 PMCID: PMC10571787 DOI: 10.3390/cancers15194697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 09/17/2023] [Accepted: 09/21/2023] [Indexed: 10/15/2023] Open
Abstract
Ovarian cancer has a dismal prognosis. Standard treatment following surgery relies on platinum-based chemotherapy. However, sizeable percentages of patients are unresponsive. Identification of markers predicting the response to chemotherapy might help select eligible patients and spare non-responding patients from treatment-associated toxicity. Cancer/testis antigens (CTAs) are expressed by healthy germ cells and malignant cells of diverse histological origin. This expression profile identifies them as attractive targets for cancer immunotherapies. We analyzed the correlations between expression of MAGE-A10 and New York esophageal-1 cancer (NY-ESO-1) CTAs at the protein level and the effectiveness of platinum-based chemotherapy in patients with advanced-stage high-grade serous ovarian carcinoma (HGSOC). MAGE-A10 and NY-ESO-1 protein expression was analyzed by immunohistochemistry (IHC) in formalin-fixed, paraffin-embedded samples from 93 patients with advanced-stage HGSOC treated at our institutions between January 1996 and December 2013. The correlation between the expression of these markers and response to platinum-based chemotherapy, evaluated according to RECIST 1.1 criteria and platinum sensitivity, measured as platinum-free interval (PFI), progression free (PFS), and overall survival (OS) was explored. The MAGE-A10 protein expression predicted unresponsiveness to platinum-based chemotherapy (p = 0.005), poor platinum sensitivity (p < 0.001), poor PFS (p < 0.001), and OS (p < 0.001). Multivariate analysis identified MAGE-A10 protein expression as an independent predictor of poor platinum sensitivity (p = 0.005) and shorter OS (p < 0.001). Instead, no correlation was observed between the NY-ESO-1 protein expression and response to platinum-based chemotherapy (p = 0.832), platinum sensitivity (p = 0.168), PFS (p = 0.126), and OS (p = 0.335). The MAGE-A10 protein expression reliably identified advanced-stage HGSOC unresponsive to platinum-based chemotherapy. Targeted immunotherapy could represent an important alternative therapeutic option in these cancers.
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Affiliation(s)
- Nataša Lisica Šikić
- Department of Pathology, Forensic Medicine and Cytology, General Hospital Zadar, 23000 Zadar, Croatia
| | - Branka Petrić Miše
- Department of Oncology, Clinical Hospital Center Split, School of Medicine, University of Split, 21000 Split, Croatia
| | - Snježana Tomić
- Department of Pathology, Forensic Medicine and Cytology, Clinical Hospital Center Split, School of Medicine, University of Split, 21000 Split, Croatia
| | - Giulia Spagnol
- Department of Women and Children's Health, Clinic of Gynecology and Obstetrics, University of Padua, 35122 Padua, Italy
| | - Luka Matak
- Department of Obstetrics and Gynecology, General Hospital Zadar, 23000 Zadar, Croatia
| | - Antonio Juretić
- Department of Oncology, University Hospital Dubrava, University of Zagreb, 10000 Zagreb, Croatia
| | - Giulio Spagnoli
- Istituto CNR "Translational Pharmacology", 00133 Rome, Italy
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3
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Ai H, Yang H, Li L, Ma J, Liu K, Li Z. Cancer/testis antigens: promising immunotherapy targets for digestive tract cancers. Front Immunol 2023; 14:1190883. [PMID: 37398650 PMCID: PMC10311965 DOI: 10.3389/fimmu.2023.1190883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Accepted: 05/26/2023] [Indexed: 07/04/2023] Open
Abstract
Digestive tract cancers, including esophageal, gastric, and colorectal cancers, are the major cause of death among cancer patients worldwide due to the heterogeneity of cancer cells, which limits the effectiveness of traditional treatment methods. Immunotherapy represents a promising treatment strategy for improving the prognosis of patients with digestive tract cancers. However, the clinical application of this approach is limited by the absence of optimal targets. Cancer/testis antigens are characterized by low or absent expression in normal tissues, but high expression in tumor tissues, making them an attractive target for antitumor immunotherapy. Recent preclinical trials have shown promising results for cancer/testis antigen-targeted immunotherapy in digestive cancer. However, practical problems and difficulties in clinical application remain. This review presents a comprehensive analysis of cancer/testis antigens in digestive tract cancers, covering their expression, function, and potential as an immunotherapy target. Additionally, the current state of cancer/testis antigens in digestive tract cancer immunotherapy is discussed, and we predict that these antigens hold great promise as an avenue for breakthroughs in the treatment of digestive tract cancers.
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Affiliation(s)
- Huihan Ai
- Department of General Surgery, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou, Henan, China
| | - Hang Yang
- Department of General Surgery, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou, Henan, China
| | - Liang Li
- Department of General Surgery, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou, Henan, China
| | - Jie Ma
- Department of General Surgery, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou, Henan, China
| | - Kangdong Liu
- Department of Pathophysiology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan, China
- Department of Molecular and Cellular Biology, China-United States (US) Hormel (Henan) Cancer Institute, Zhengzhou, Henan, China
- Research Center of Basic Medicine, Academy of Medical Sciences, Zhengzhou University, Zhengzhou, Henan, China
| | - Zhi Li
- Department of General Surgery, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou, Henan, China
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4
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Nin DS, Deng LW. Biology of Cancer-Testis Antigens and Their Therapeutic Implications in Cancer. Cells 2023; 12:cells12060926. [PMID: 36980267 PMCID: PMC10047177 DOI: 10.3390/cells12060926] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 03/14/2023] [Accepted: 03/15/2023] [Indexed: 03/30/2023] Open
Abstract
Tumour-specific antigens have been an area of interest in cancer therapy since their discovery in the middle of the 20th century. In the era of immune-based cancer therapeutics, redirecting our immune cells to target these tumour-specific antigens has become even more relevant. Cancer-testis antigens (CTAs) are a class of antigens with an expression specific to the testis and cancer cells. CTAs have also been demonstrated to be expressed in a wide variety of cancers. Due to their frequency and specificity of expression in a multitude of cancers, CTAs have been particularly attractive as cancer-specific therapeutic targets. There is now a rapid expansion of CTAs being identified and many studies have been conducted to correlate CTA expression with cancer and therapy-resistant phenotypes. Furthermore, there is an increasing number of clinical trials involving using some of these CTAs as molecular targets in pharmacological and immune-targeted therapeutics for various cancers. This review will summarise the current knowledge of the biology of known CTAs in tumorigenesis and the regulation of CTA genes. CTAs as molecular targets and the therapeutic implications of these CTA-targeted anticancer strategies will also be discussed.
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Affiliation(s)
- Dawn Sijin Nin
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, MD 7, 8 Medical Drive, Singapore 117596, Singapore
- NUS Center for Cancer Research, Yong Loo Lin School of Medicine, National University of Singapore, 14 Medical Drive, Singapore 117599, Singapore
| | - Lih-Wen Deng
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, MD 7, 8 Medical Drive, Singapore 117596, Singapore
- NUS Center for Cancer Research, Yong Loo Lin School of Medicine, National University of Singapore, 14 Medical Drive, Singapore 117599, Singapore
- National University Cancer Institute, National University Health System, 5 Lower Kent Ridge Road, Singapore 119074, Singapore
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5
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Tumor-associated antigens and their antibodies in the screening, diagnosis, and monitoring of esophageal cancers. Eur J Gastroenterol Hepatol 2020; 32:779-788. [PMID: 32243347 DOI: 10.1097/meg.0000000000001718] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Despite the advances in the treatment and management, esophageal cancers continue to carry a dismal prognosis with an overall 5-year survival rate ranging from 15 to 25%. Delayed onset of symptoms and lack of effective screening methods and guidelines for diagnosis of the early disease contribute to the high mortality rate of esophageal cancers. Detection of esophageal cancer at their early stage is really a challenge for physicians including primary care physicians, gastroenterologists and oncologists. Although imaging, endoscopy and biopsy have been proved to be useful diagnostic tools for esophageal cancers, their diagnostic accuracy is unsatisfactory. In addition, expensive costs, invasiveness and special training operator have limited the clinical application of these tools. Recently, tumor-associated antigens (TAAs) and their antibodies have been reported to be potential markers in esophageal cancer screening, diagnosis, monitoring and prognostication. Because TAAs and their antibodies have the advantages of inexpensive cost, noninvasiveness and easy access, they have attracted much attention as an affordable option for early esophageal cancer diagnosis. In this review, we summarized the advances in TAAs and their antibodies in esophageal cancer screening, diagnosis, monitoring and prognostication.
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Roy S, Sethi TK, Taylor D, Kim YJ, Johnson DB. Breakthrough concepts in immune-oncology: Cancer vaccines at the bedside. J Leukoc Biol 2020; 108:1455-1489. [PMID: 32557857 DOI: 10.1002/jlb.5bt0420-585rr] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Revised: 04/15/2020] [Accepted: 04/18/2020] [Indexed: 12/11/2022] Open
Abstract
Clinical approval of the immune checkpoint blockade (ICB) agents for multiple cancer types has reinvigorated the long-standing work on cancer vaccines. In the pre-ICB era, clinical efforts focused on the Ag, the adjuvants, the formulation, and the mode of delivery. These translational efforts on therapeutic vaccines range from cell-based (e.g., dendritic cells vaccine Sipuleucel-T) to DNA/RNA-based platforms with various formulations (liposome), vectors (Listeria monocytogenes), or modes of delivery (intratumoral, gene gun, etc.). Despite promising preclinical results, cancer vaccine trials without ICB have historically shown little clinical activity. With the anticipation and expansion of combinatorial immunotherapeutic trials with ICB, the cancer vaccine field has entered the personalized medicine arena with recent advances in immunogenic neoantigen-based vaccines. In this article, we review the literature to organize the different cancer vaccines in the clinical space, and we will discuss their advantages, limits, and recent progress to overcome their challenges. Furthermore, we will also discuss recent preclinical advances and clinical strategies to combine vaccines with checkpoint blockade to improve therapeutic outcome and present a translational perspective on future directions.
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Affiliation(s)
- Sohini Roy
- Department of Otolaryngology - Head & Neck Surgery, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Tarsheen K Sethi
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - David Taylor
- Department of Otolaryngology - Head & Neck Surgery, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Young J Kim
- Department of Otolaryngology - Head & Neck Surgery, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Douglas B Johnson
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
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7
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Wei R, Dean DC, Thanindratarn P, Hornicek FJ, Guo W, Duan Z. Cancer testis antigens in sarcoma: Expression, function and immunotherapeutic application. Cancer Lett 2019; 479:54-60. [PMID: 31634526 DOI: 10.1016/j.canlet.2019.10.024] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 09/23/2019] [Accepted: 10/15/2019] [Indexed: 02/06/2023]
Abstract
Sarcomas are a group of heterogeneous malignancies of mesenchymal origin. Patient outcomes remain especially grim for those with recurrent or metastatic disease, and current therapeutic strategies have not significantly improved outcomes over the past few decades. This has led to a number of studies assessing novel therapies. Cancer testis antigens (CTAs) are tumor-associated antigens with physiologic expression in the testis and various malignancies, including sarcomas. Genes encoding CTAs include MAGE, NY-ESO-1, PRAME, TRAG-3/CSAGE, and SSX. The importance and function of CTAs in tumorigenesis have gained recognition in recent years. They are also proving as robust diagnostic and prognostic biomarkers. Therapeutically, antigens derived from CTAs are highly recognizable by T lymphocytes and therefore capable of generating a potent antitumor immune response. CTAs are, therefore, promising targets for novel immunotherapies. Here we review the emerging works on expression, function, and immunotherapeutic application of CTAs in sarcoma therapy.
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Affiliation(s)
- Ran Wei
- Department of Orthopedic Surgery, Sarcoma Biology Laboratory, David Geffen School of Medicine at UCLA, 615 Charles E. Young Dr. South, Los Angeles, CA, 90095, USA; Musculoskeletal Tumor Center, Peking University People's Hospital, No. 11 Xizhimen South Street, Xicheng District, Beijing, 100044, China.
| | - Dylan C Dean
- Department of Orthopedic Surgery, Sarcoma Biology Laboratory, David Geffen School of Medicine at UCLA, 615 Charles E. Young Dr. South, Los Angeles, CA, 90095, USA.
| | - Pichaya Thanindratarn
- Department of Orthopedic Surgery, Sarcoma Biology Laboratory, David Geffen School of Medicine at UCLA, 615 Charles E. Young Dr. South, Los Angeles, CA, 90095, USA.
| | - Francis J Hornicek
- Department of Orthopedic Surgery, Sarcoma Biology Laboratory, David Geffen School of Medicine at UCLA, 615 Charles E. Young Dr. South, Los Angeles, CA, 90095, USA.
| | - Wei Guo
- Musculoskeletal Tumor Center, Peking University People's Hospital, No. 11 Xizhimen South Street, Xicheng District, Beijing, 100044, China.
| | - Zhenfeng Duan
- Department of Orthopedic Surgery, Sarcoma Biology Laboratory, David Geffen School of Medicine at UCLA, 615 Charles E. Young Dr. South, Los Angeles, CA, 90095, USA.
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8
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Tio D, Kasiem FR, Willemsen M, van Doorn R, van der Werf N, Hoekzema R, Luiten RM, Bekkenk MW. Expression of cancer/testis antigens in cutaneous melanoma: a systematic review. Melanoma Res 2019; 29:349-357. [PMID: 30615012 DOI: 10.1097/cmr.0000000000000569] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
The cancer/testis antigen (CTA) family is a group of antigens whose expression is restricted to male germline cells of the testis and various malignancies. This expression pattern makes this group of antigens potential targets for immunotherapy. The aim of this study was to create an overview of CTA expressed by melanoma cells at mRNA and protein level. A systematic literature search was performed in Medline (PubMed) and Embase from inception up to and including February 2018. Studies were screened for eligibility by two independent reviewers. A total of 65 full-text articles were included in the final analysis. A total of 48 CTA have been studied in melanoma. Various CTA show different expression rates in primary and metastatic tumours. Of the 48 CTA, the most studied were MAGE-A3, MAGE-A1, NY-ESO-1, MAGE-A4, SSX2, MAGE-A2, MAGE-C1/CT7, SSX1, MAGE-C2/CT10 and MAGE-A12. On average, MAGE-A3 mRNA is present in 36% of primary tumours, whereas metastatic tumours have an expression rate of 55-81%. The same applies to the protein expression rate of MAGE-A3 in primary tumours, which is reported to be at 15-37%, whereas metastatic tumours have a higher expression rate of 25-70%. This trend of increased expression in metastases compared with primary tumours is observed with MAGE-A1, MAGE-A2, MAGE-A4, MAGE-A12 and NY-ESO-1. Many CTA are expressed on melanoma. This review provides an overview of the expression frequency of CTAs in melanoma and may aid in identifying CTA as the therapeutic target for immunotherapy.
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Affiliation(s)
- Darryl Tio
- Department of Dermatology, Amsterdam University Medical Centers, VU University
| | - Fazira R Kasiem
- Department of Dermatology and Netherlands Institute for Pigment Disorders, Amsterdam University Medical Centers, University of Amsterdam
- Cancer Center Amsterdam and Amsterdam Infection & Immunity Institute, Amsterdam
| | - Marcella Willemsen
- Department of Dermatology and Netherlands Institute for Pigment Disorders, Amsterdam University Medical Centers, University of Amsterdam
- Cancer Center Amsterdam and Amsterdam Infection & Immunity Institute, Amsterdam
| | | | - Nienke van der Werf
- Medical Library, Leiden Universitair Medisch Centrum, Leiden, The Netherlands
| | - Rick Hoekzema
- Department of Dermatology, Amsterdam University Medical Centers, VU University
- Department of Dermatology and Netherlands Institute for Pigment Disorders, Amsterdam University Medical Centers, University of Amsterdam
| | - Rosalie M Luiten
- Department of Dermatology and Netherlands Institute for Pigment Disorders, Amsterdam University Medical Centers, University of Amsterdam
- Cancer Center Amsterdam and Amsterdam Infection & Immunity Institute, Amsterdam
| | - Marcel W Bekkenk
- Department of Dermatology, Amsterdam University Medical Centers, VU University
- Department of Dermatology and Netherlands Institute for Pigment Disorders, Amsterdam University Medical Centers, University of Amsterdam
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10
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Roguljic A, Spagnoli G, Juretic A, Sarcevic B, Banovic M, Beketic Oreskovic L. Possible predictive role of cancer/testis antigens in breast ductal carcinoma in situ. Oncol Lett 2018; 16:7245-7255. [PMID: 30546463 PMCID: PMC6256292 DOI: 10.3892/ol.2018.9544] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Accepted: 09/27/2018] [Indexed: 01/10/2023] Open
Abstract
Cancer/testis antigens (CTAs) are a large family of tumor-associated antigens expressed in human tumors of different histological origin, but not in normal tissues, with the exception of the testes and placenta. Numerous immunohistochemical studies have reported associations between CTA expression and a negative estrogen receptor (ER) status in breast tumors, and demonstrated that CTAs are frequently expressed in tumors with higher nuclear grade. The expression of CTAs has not been studied as extensively in ductal carcinoma in situ (DCIS) as it has been in invasive breast cancer. The present retrospective study included archived paraffin-embedded specimens from 83 patients diagnosed with DCIS in the period between January 2007 and December 2014. The follow-up time for local recurrence ranged between 1 and 8 years (mean, 5.02 years). Antigens from the melanoma-associated antigen gene (MAGE) family, namely multi-MAGE-A, MAGE-A1, MAGE-A10 and New York esophageal squamous cell carcinoma 1 (NY-ESO-1) antigen, were evaluated by immunostaining and their subcellular location was investigated. Presence of tumor-infiltrating lymphocytes (TILs) was evaluated on all sections, together with the histopathological variables of DCIS. Specific tested antigens exhibited associations with histopathological parameters for DCIS and all demonstrated statistically significant associations with nuclear staining, simultaneous cytoplasmic and nuclear staining, and local recurrence. Antigen MAGE-A10 demonstrated a significant association with higher expression of ER (P=0.005) and higher tumor nuclear grade (P=0.001), cytoplasmic staining (P=0.029) and antigen NY-ESO-1 with higher tumor size (P=0.001), expression of TILs (P=0.001) and R1 resection (P=0.001). A χ2 test revealed significant associations between simultaneous cytoplasmic and nuclear staining and local recurrence (P=0.005), central necrosis (P=0.016), and the expression of ER (P=0.003) and progesterone receptor (PR) (P=0.010). Additional analysis revealed an association between antigen MAGE-A10 and TILs (P=0.05). Additional analysis of TILs indicated that they were significantly associated with tumor grade (P=0.023), central necrosis (P<0.001), ER (P=0.003) and PR (P=0.029). Overall, CTAs from the MAGE family (MAGE-A1, multi-MAGE-A and MAGE-A10) and NY-ESO-1 associate with histopathological predictive variables of DCIS. The expression of antigens NY-ESO-1 and MAGE-A10 could serve an important role in the treatment of patients with negative histopathological predictive variables, but further analysis is required. Simultaneous cytoplasmic and nuclear protein expression of MAGE-A family and NY-ESO-1 CTAs may represent an independent marker for local recurrence. Taken together, the present data suggest that CTAs are not perfect indicators of invasiveness for DCIS, but could inform treatment strategies for patients when taken in combination with other histopathological predictive variables. However, this was a small study and further larger studies will be necessary to confirm the current findings.
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Affiliation(s)
- Ana Roguljic
- Department of Radiation and Medical Oncology, Sisters of Mercy University Hospital Center, University Hospital for Tumors, 10000 Zagreb, Croatia
| | - Gulio Spagnoli
- Department of Biomedicine, University Hospital Basel, 4031 Basel, Switzerland
| | - Antonio Juretic
- Department of Oncology, Clinical Hospital Center Zagreb, University of Zagreb School of Medicine, 10000 Zagreb, Croatia
| | - Bozena Sarcevic
- Department of Oncology-Pathology, University of Zagreb School of Medicine, Sisters of Mercy University Hospital Center, University Hospital for Tumors, 10000 Zagreb, Croatia
| | - Marija Banovic
- University of Zagreb School of Medicine, 10000 Zagreb, Croatia
| | - Lidija Beketic Oreskovic
- Department of Oncology, University of Zagreb School of Medicine, Sisters of Mercy University Hospital Center, University Hospital for Tumors, 10000 Zagreb, Croatia
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Barutello G, Rolih V, Arigoni M, Tarone L, Conti L, Quaglino E, Buracco P, Cavallo F, Riccardo F. Strengths and Weaknesses of Pre-Clinical Models for Human Melanoma Treatment: Dawn of Dogs' Revolution for Immunotherapy. Int J Mol Sci 2018. [PMID: 29534457 PMCID: PMC5877660 DOI: 10.3390/ijms19030799] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Despite several therapeutic advances, malignant melanoma still remains a fatal disease for which novel and long-term curative treatments are needed. The successful development of innovative therapies strongly depends on the availability of appropriate pre-clinical models. For this purpose, several mouse models holding the promise to provide insight into molecular biology and clinical behavior of melanoma have been generated. The most relevant ones and their contribution for the advancement of therapeutic approaches for the treatment of human melanoma patients will be here summarized. However, as models, mice do not recapitulate all the features of human melanoma, thus their strengths and weaknesses need to be carefully identified and considered for the translation of the results into the human clinics. In this panorama, the concept of comparative oncology acquires a priceless value. The revolutionary importance of spontaneous canine melanoma as a translational model for the pre-clinical investigation of melanoma progression and treatment will be here discussed, with a special consideration to the development of innovative immunotherapeutic approaches.
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Affiliation(s)
- Giuseppina Barutello
- Department of Molecular Biotechnology and Health Sciences, University of Torino, 10126 Torino, Italy.
| | - Valeria Rolih
- Department of Molecular Biotechnology and Health Sciences, University of Torino, 10126 Torino, Italy.
| | - Maddalena Arigoni
- Department of Molecular Biotechnology and Health Sciences, University of Torino, 10126 Torino, Italy.
| | - Lidia Tarone
- Department of Molecular Biotechnology and Health Sciences, University of Torino, 10126 Torino, Italy.
| | - Laura Conti
- Department of Molecular Biotechnology and Health Sciences, University of Torino, 10126 Torino, Italy.
| | - Elena Quaglino
- Department of Molecular Biotechnology and Health Sciences, University of Torino, 10126 Torino, Italy.
| | - Paolo Buracco
- Department of Veterinary Science, University of Torino, 10095 Grugliasco, Italy.
| | - Federica Cavallo
- Department of Molecular Biotechnology and Health Sciences, University of Torino, 10126 Torino, Italy.
| | - Federica Riccardo
- Department of Molecular Biotechnology and Health Sciences, University of Torino, 10126 Torino, Italy.
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Grah JJ, Katalinic D, Juretic A, Santek F, Samarzija M. Clinical Significance of Immunohistochemical Expression of Cancer/Testis Tumor-associated Antigens (MAGE-A1, MAGE-A3/4, NY-ESO-1) in Patients with Non-small Cell Lung Cancer. TUMORI JOURNAL 2018. [DOI: 10.1177/1430.15817] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Josip Joachim Grah
- Department of Oncology, University Hospital Center (KBC Zagreb), University of Zagreb School of Medicine, Zagreb, Croatia
| | - Darko Katalinic
- Department of Oncology, University Hospital Center (KBC Zagreb), University of Zagreb School of Medicine, Zagreb, Croatia
| | - Antonio Juretic
- Department of Oncology, University Hospital Center (KBC Zagreb), University of Zagreb School of Medicine, Zagreb, Croatia
| | - Fedor Santek
- Department of Oncology, University Hospital Center (KBC Zagreb), University of Zagreb School of Medicine, Zagreb, Croatia
| | - Miroslav Samarzija
- Department of Pulmonary Medicine, University Hospital Center (KBC Zagreb), University of Zagreb School of Medicine, Zagreb, Croatia
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13
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Stacchiotti S, Van Tine BA. Synovial Sarcoma: Current Concepts and Future Perspectives. J Clin Oncol 2018; 36:180-187. [DOI: 10.1200/jco.2017.75.1941] [Citation(s) in RCA: 90] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Synovial sarcoma (SS) is a rare sarcoma driven by a translocation between SS18 and SSX 1, 2, or 4. With approximately 800 to 1,000 cases a year in the United States, it most commonly affects young adults between the ages of 15 and 30 years. The resultant tumors are either monophasic (pure sarcomas), biphasic (a combination or epithelioid and sarcomatous components), or poorly differentiated. The hybrid transcription factor SS18:SSX alters SWItch/Sucrose Non-Fermentable (SWI/SNF) chromatin remodeling and global methylation patterns that may allow for future therapeutic opportunities. In this review, we focus on the pharmacologic management of SS, both in the curative setting, where the standard approach is wide surgical excision combined with radiotherapy and/or (neo)adjuvant chemotherapy as appropriate, and in the palliative setting. In advanced disease, chemotherapy with anthracyclines and/or ifosfamide, trabectedin, or pazopanib has been demonstrated to be more active compared with other soft tissue sarcomas. In addition, a better understanding of the molecular and immunologic characteristics of SS has allowed for the identification of new potential targets and the development of novel biology-driven therapies that are all at different stages of testing. There include targeted agents, immunotherapy, and metabolic therapies. Because the impact of these strategies for improving SS outcome is still limited, current and future research is strongly needed to better understand the tumor biology, to identify predictive biomarkers, and to improve the outcomes for patients with SS.
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Affiliation(s)
- Silvia Stacchiotti
- Silvia Stacchiotti, Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Nazionale Tumori, Milan, Italy; and Brian Andrew Van Tine, Washington University in St Louis, St Louis, MO
| | - Brian Andrew Van Tine
- Silvia Stacchiotti, Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Istituto Nazionale Tumori, Milan, Italy; and Brian Andrew Van Tine, Washington University in St Louis, St Louis, MO
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de Necochea-Campion R, Zuckerman LM, Mirshahidi HR, Khosrowpour S, Chen CS, Mirshahidi S. Metastatic biomarkers in synovial sarcoma. Biomark Res 2017; 5:4. [PMID: 28191313 PMCID: PMC5297148 DOI: 10.1186/s40364-017-0083-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2016] [Accepted: 01/03/2017] [Indexed: 12/31/2022] Open
Abstract
Synovial sarcoma (SS) is an aggressive soft tissue sarcoma (STS) that typically occurs in the extremities near a joint. Metastatic disease is common and usually occurs in the lungs and lymph nodes. Surgical management is the mainstay of treatment with chemotherapy and radiation typically used as adjuvant treatment. Although chemotherapy has a positive impact on survival, the prognosis is poor if metastatic disease occurs. The biology of sarcoma invasion and metastasis remain poorly understood. Chromosomal translocation with fusion of the SYT and SSX genes has been described and is currently used as a diagnostic marker, although the full impact of the fusion is unknown. Multiple biomarkers have been found to be associated with SS and are currently under investigation regarding their pathways and mechanisms of action. Further research is needed in order to develop better diagnostic screening tools and understanding of tumor behavior. Development of targeted therapies that reduce metastatic events in SS, would dramatically improve patient prognosis.
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Affiliation(s)
- Rosalia de Necochea-Campion
- Biospecimen Laboratory, Loma Linda University Cancer Center, Loma Linda University School of Medicine, 11175 Campus Street, Chan Shun Pavilion 11017, Loma Linda, CA 92354 USA
| | - Lee M Zuckerman
- Department of Orthopaedic Surgery, Loma Linda University Medical Center, 11406 Loma Linda Drive, Suite 218, Loma Linda, CA 92354 USA
| | - Hamid R Mirshahidi
- Division of Hematology/Oncology, Loma Linda University School of Medicine, 11175 Campus Street, Chan Shun Pavilion 11015, Loma Linda, CA 92354 USA
| | | | - Chien-Shing Chen
- Biospecimen Laboratory, Loma Linda University Cancer Center, Loma Linda University School of Medicine, 11175 Campus Street, Chan Shun Pavilion 11017, Loma Linda, CA 92354 USA.,Division of Hematology/Oncology, Loma Linda University School of Medicine, 11175 Campus Street, Chan Shun Pavilion 11015, Loma Linda, CA 92354 USA
| | - Saied Mirshahidi
- Biospecimen Laboratory, Loma Linda University Cancer Center, Loma Linda University School of Medicine, 11175 Campus Street, Chan Shun Pavilion 11017, Loma Linda, CA 92354 USA
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15
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Esfandiary A, Ghafouri-Fard S. New York esophageal squamous cell carcinoma-1 and cancer immunotherapy. Immunotherapy 2016; 7:411-39. [PMID: 25917631 DOI: 10.2217/imt.15.3] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
New York esophageal squamous cell carcinoma 1 (NY-ESO-1) is a known cancer testis gene with exceptional immunogenicity and prevalent expression in many cancer types. These characteristics have made it an appropriate vaccine candidate with the potential application against various malignancies. This article reviews recent knowledge about the NY-ESO-1 biology, function, immunogenicity and expression in cancers as well as and the results of clinical trials with this antigen.
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Affiliation(s)
- Ali Esfandiary
- Department of Medical Genetics, Shahid Beheshti University of Medical Sciences, Tehran 19857-17443, Iran
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16
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Tan MP, Gerry AB, Brewer JE, Melchiori L, Bridgeman JS, Bennett AD, Pumphrey NJ, Jakobsen BK, Price DA, Ladell K, Sewell AK. T cell receptor binding affinity governs the functional profile of cancer-specific CD8+ T cells. Clin Exp Immunol 2015; 180:255-70. [PMID: 25496365 PMCID: PMC4408161 DOI: 10.1111/cei.12570] [Citation(s) in RCA: 95] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/03/2014] [Indexed: 12/17/2022] Open
Abstract
Antigen-specific T cell receptor (TCR) gene transfer via patient-derived T cells is an attractive approach to cancer therapy, with the potential to circumvent immune regulatory networks. However, high-affinity tumour-specific TCR clonotypes are typically deleted from the available repertoire during thymic selection because the vast majority of targeted epitopes are derived from autologous proteins. This process places intrinsic constraints on the efficacy of T cell-based cancer vaccines and therapeutic strategies that employ naturally generated tumour-specific TCRs. In this study, we used altered peptide ligands and lentivirus-mediated transduction of affinity-enhanced TCRs selected by phage display to study the functional properties of CD8(+) T cells specific for three different tumour-associated peptide antigens across a range of binding parameters. The key findings were: (i) TCR affinity controls T cell antigen sensitivity and polyfunctionality; (ii) supraphysiological affinity thresholds exist, above which T cell function cannot be improved; and (iii) T cells transduced with very high-affinity TCRs exhibit cross-reactivity with self-derived peptides presented by the restricting human leucocyte antigen. Optimal system-defined affinity windows above the range established for natural tumour-specific TCRs therefore allow the enhancement of T cell effector function without off-target effects. These findings have major implications for the rational design of novel TCR-based biologics underpinned by rigorous preclinical evaluation.
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Affiliation(s)
- M P Tan
- Institute of Infection and Immunity, Cardiff University School of Medicine, Cardiff, UK
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17
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Su C, Xu Y, Li X, Ren S, Zhao C, Hou L, Ye Z, Zhou C. Predictive and prognostic effect of CD133 and cancer-testis antigens in stage Ib-IIIA non-small cell lung cancer. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY 2015; 8:5509-5518. [PMID: 26191258 PMCID: PMC4503129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 03/03/2015] [Accepted: 04/15/2015] [Indexed: 06/04/2023]
Abstract
CD133 and cancer-testis antigens (CTAs) may be potential predicted markers of adjuvant chemotherapy or immune therapy, and they may be the independent prognostic factor of NSCLC. Nowadays, there is still no predictive biomarker identified for the use of adjuvant chemotherapy in non-small cell lung cancer (NSCLC) patients. To clarify the role of CD133 and CTAs as a predictive marker for adjuvant chemotherapy or prognostic factors of overall survival, we performed a retrospective study in 159 stage Ib-IIIA NSCLC patients receiving adjuvant chemotherapy or observe from April 2003 to March 2004 in our institute. Clinical data and gene anaylisis results were collected, while CD133 and three CTAs (MAGE-A4, NY-ESO-1, MAGE-A10) were determined according to their monoclonal antibodies such as CD133, 57B, D8.38 and 3GA11 by immunohistochemistry. All CTAs were more frequently expressed in squamous cell carcinoma (SCC) (50.0%, 26.9%, 34.6%) than in adenocarcinoma (16.2%, 16.2%, 16.2%). CD133 was more frequently found in patients with adenocarcinoma (P=0.044). Negative expression of CD133 was associated with a significantly longer overall survival compared to positive expression of CD133 (62.5 vs. 48.5 months, P=0.035). When combined with MAGEA4, NY-ESO-1or MAGE-A10, patients' OS showed significantly difference among different combination. (CD133-MAGEA4-/CD133-MAGEA4+/CD133+MAGEA4-/CD133+MAGEA4+: 65.6 months vs.51.5 months vs.32.2 months vs.19.8 months, P=0.000, CD133-NY-ESO-1-/ CD133+NY-ESO-1-/CD133-NY-ESO-1+/ CD133+NY-ESO-1+: 57.8 months vs. 55.7 months vs. 44.6 months vs. 28.5 months, P=0.000, CD133-MAGEA10-/CD133+ MAGEA10-/CD133-MAGEA10-/CD133+MAGEA10+: 66.2 months vs. 57.2 months vs. 48.8 months vs. 41.4 months, P=0.001). There is no difference between patients received adjuvant chemotherapy or not, but subgroup analysis showed that the patients with CD133+NY-ESO-1+ expression who received chemotherapy will survive longer than not receive adjuvant chemotherapy (received vs. not received, 52.1 vs. 27.1 months, P=0.020). In the subgroup with EGFR mutation/ALK translocation/Ros1 translocation/Ret fusion, the trend remained but without a statistically significant difference. Multivariate COX regression analysis showed that stage, CD133, CD133-MAGEA4- and CD133-NY-ESO-1- are independent prognostic factors. In conclusion, CTAs (MAGE-A4, NY-ESO-1, MAGE-A10) were more likely expressed in patients with squamous cell carcinoma and when CTAs combined with CD133, they can be better prognostic factors. Patients with CD133+NY-ESO-1+ expression may survive longer when treated with adjuvant chemotherapy, which indicates that the CD133 and CTAs might be a potential marker to guide adjuvant chemotherapy in this population.
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Affiliation(s)
- Chunxia Su
- Department of Medical Oncology, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Tongji University Medical School Cancer InstituteShanghai, People’s Republic of China
| | - Ying Xu
- Department of Medical Oncology, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Tongji University Medical School Cancer InstituteShanghai, People’s Republic of China
| | - Xuefei Li
- Department of Lung Cancer and Immunology, Shanghai Pulmonary Hospital, Tongji University, Tongji University Medical School Cancer InstituteShanghai, People’s Republic of China
| | - Shengxiang Ren
- Department of Medical Oncology, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Tongji University Medical School Cancer InstituteShanghai, People’s Republic of China
| | - Chao Zhao
- Department of Lung Cancer and Immunology, Shanghai Pulmonary Hospital, Tongji University, Tongji University Medical School Cancer InstituteShanghai, People’s Republic of China
| | - Likun Hou
- Department of Pathology, Shanghai Pulmonary Hospital, Tongji University School of MedicineShanghai, People’s Republic of China
| | - Zhiwei Ye
- Department of Nuclear Medicine, Central Hospital of Shanghai Huangpu DistrictShanghai, People’s Republic of China
| | - Caicun Zhou
- Department of Medical Oncology, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Tongji University Medical School Cancer InstituteShanghai, People’s Republic of China
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Burkhardt UE, Sloots A, Jakobi V, Wei WZ, Cavallo F, Kloke BP, Wels WS. IL-15 augments antitumoral activity of an ErbB2/HER2 cancer vaccine targeted to professional antigen-presenting cells. Cancer Immunol Immunother 2012; 61:1473-84. [PMID: 22331080 PMCID: PMC11029045 DOI: 10.1007/s00262-012-1215-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2011] [Accepted: 01/27/2012] [Indexed: 01/01/2023]
Abstract
Targeted delivery of tumor-associated antigens to professional antigen-presenting cells (APC) is being explored as a strategy to enhance the antitumoral activity of cancer vaccines. Here, we generated a cell-based system for continuous in vivo production of a CTLA-4-ErbB2 fusion protein as a therapeutic vaccine. The chimeric CTLA-4-ErbB2 molecule contains the extracellular domain of CTLA-4 for specific targeting to costimulatory B7 molecules on the surface of APC, genetically fused to residues 1-222 of human ErbB2 (HER2) as an antigenic determinant. In wild-type BALB/c mice, inoculation of syngeneic epithelial cells continuously secreting the CTLA-4-ErbB2 fusion vaccine in the vicinity of subcutaneously growing ErbB2-expressing renal cell carcinomas resulted in the rejection of established tumors, accompanied by the induction of ErbB2-specific antibodies and cytotoxic T cells. In contrast, treatment with CTLA-4-ErbB2 vaccine-secreting producer cells alone was insufficient to induce tumor rejection in ErbB2-transgenic WAP-Her-2 F1 mice, which are characterized by pronounced immunological tolerance to the human self-antigen. When CTLA-4-ErbB2 producer cells were modified to additionally secrete interleukin (IL)-15, antigen-specific antitumoral activity of the vaccine in WAP-Her-2 F1 mice was restored, documented by an increase in survival, and marked inhibition of the growth of established ErbB2-expressing, but not antigen-negative tumors. Our results demonstrate that continuous in vivo expression of an APC-targeted ErbB2 fusion protein results in antigen-specific immune responses and antitumoral activity in tumor-bearing hosts, which is augmented by the pleiotropic cytokine IL-15. This provides a rationale for further development of this approach for specific cancer immunotherapy.
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Affiliation(s)
- Ute E. Burkhardt
- Chemotherapeutisches Forschungsinstitut Georg-Speyer-Haus, Paul-Ehrlich-Straße 42-44, 60596 Frankfurt am Main, Germany
| | - Arjen Sloots
- Chemotherapeutisches Forschungsinstitut Georg-Speyer-Haus, Paul-Ehrlich-Straße 42-44, 60596 Frankfurt am Main, Germany
| | - Vera Jakobi
- Chemotherapeutisches Forschungsinstitut Georg-Speyer-Haus, Paul-Ehrlich-Straße 42-44, 60596 Frankfurt am Main, Germany
| | - Wei-Zen Wei
- Karmanos Cancer Institute, Wayne State University, Detroit, MI 48201 USA
| | - Federica Cavallo
- Department of Clinical and Biological Sciences, Molecular Biotechnology Center, University of Turin, 10126 Turin, Italy
| | - Björn-Philipp Kloke
- Chemotherapeutisches Forschungsinstitut Georg-Speyer-Haus, Paul-Ehrlich-Straße 42-44, 60596 Frankfurt am Main, Germany
| | - Winfried S. Wels
- Chemotherapeutisches Forschungsinstitut Georg-Speyer-Haus, Paul-Ehrlich-Straße 42-44, 60596 Frankfurt am Main, Germany
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19
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Matković B, Juretić A, Spagnoli GC, Separović V, Gamulin M, Separović R, Sarić N, Basić-Koretić M, Novosel I, Kruslin B. Expression of MAGE-A and NY-ESO-1 cancer/testis antigens in medullary breast cancer: retrospective immunohistochemical study. Croat Med J 2011; 52:171-7. [PMID: 21495200 PMCID: PMC3081216 DOI: 10.3325/cmj.2011.52.171] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Aim To immunohistochemically evaluate the expression of MAGE-A1, MAGE-A, and NY-ESO-1 cancer/testis (C/T) tumor antigens in medullary breast cancer (MBC) tumor samples and to analyze it in relation to the clinicopathological features. Methods This retrospective study included samples from 49 patients: 40 with typical MBC and 9 with atypical MBC. Tumor specimens were obtained from patients operated on in the University Hospital for Tumors and the Sisters of Mercy University Hospital, Zagreb, Croatia, from 1999 to 2005. Standard immunohistochemistry was used on archival paraffin-embedded MBC tissues. Results MAGE-A1, MAGE-A, and NY-ESO-1 antigens were expressed in 33% (16/49), 33% (16/49), and 22% (11/49) of patients, respectively. No difference between the groups with and without C/T tumor antigen expression in age at diagnosis, tumor size, axillary lymph node metastasis, adjuvant therapy, and HER-2 expression was identified. Significantly more patients died in the MAGE-A-positive group than in the MAGE-A-negative group (P = 0.010), whereas a borderline significance was found between MAGE-A1-positive and the MAGE-A1-negative group (P = 0.079) and between NY-ESO-1-positive and NY-ESO-1-negative group (P = 0.117). Overall survival, as evaluated by the Kaplan-Meier curves, was lower in MAGE-A1- (P = 0.031), MAGE-A- (P = 0.004), NY-ESO-1-positive groups (P = 0.077). Conclusion Expression of C/T antigens may represent a marker of potential prognostic relevance in MBC.
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Affiliation(s)
- Bozica Matković
- Zagreb University Hospital Center, Department of Oncology, Kispatićeva 12, Zagreb, Croatia
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Bujas T, Marusic Z, Peric Balja M, Mijic A, Kruslin B, Tomas D. MAGE-A3/4 and NY-ESO-1 antigens expression in metastatic esophageal squamous cell carcinoma. Eur J Histochem 2011; 55:e7. [PMID: 21556122 PMCID: PMC3167346 DOI: 10.4081/ejh.2011.e7] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2011] [Revised: 02/09/2011] [Accepted: 02/15/2011] [Indexed: 11/23/2022] Open
Abstract
In the present study we analyzed immunohistochemical expression of MAGE-A 3/4 and NY-ESO-1 in 55 samples of esophageal squamous cell carcinomas (ESCC) and their respective lymph node metastases. To our knowledge this is the first study to assess and compare the expression of these antigens in ESCC lymph node metastases. Fifty (90.9%) primary ESCC were positive for MAGE-A 3/4 and 53 (96.6%) were positive for NY-ESO-1. MAGE-A 3/4 was expressed in all lymph node metastases and the intensity of expression was high in a majority of cases. NY-ESO-1 was negative in 2 (7.1%) lymph nodes metastases, while the reaction was predominantly moderate in the positive group. In primary tumors MAGE-A 3/4 showed a significantly higher intensity of expression compared to NY-ESO-1 (P=0.047), while in lymph node metastases the intensity of expression was not significantly different (P=0.387). Primary tumors with and without lymph node metastases showed no significant differences in MAGE-A 3/4 (P=0.672) and NY-ESO-1 (P=0.444) expression. Intensity of MAGE-A 3/4 (P=0.461) and NY-ESO-1 (P=0.414) expression in primary tumors was not significantly different compared to the expression in their respective lymph nodes metastases. Expression of MAGE-A 3/4 in primary tumors showed significant positive correlation with primary tumor expression of NY-ESO-1 (P=0.021) but no significant correlation with the expression of MAGE-A 3/4 in lymph node metastases (P=0.056). Expression of NY-ESO-1 in primary tumors showed significant positive correlation with the expression of NY-ESO-1 in lymph node metastases (P=0.001) and significant negative correlation with patients' age (P<0.001). Expression of MAGE-A 3/4 and NY-ESO-1 in primary tumors and lymph node metastases showed no significant correlation with prognostic parameters such as tumor grade and TNM stage (P>0.05). We have shown different levels of MAGE-A 3/4 and NY-ESO-1 expression in almost all specimens of primary tumor and lymph node metastases, suggesting that ESCC may be possible target of immunotherapy and anti-tumor vaccination. High levels of expression in lymph node metastases indicate possible clinical benefit of postoperative vaccine with MAGE-A3 and NY-ESO-1 in advanced stage of disease.
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Affiliation(s)
- T Bujas
- Department of Pathology, GeneralHospital Karlovac, University Hospital, Zagreb, Croatia.
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21
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Schultz-Thater E, Piscuoglio S, Iezzi G, Le Magnen C, Zajac P, Carafa V, Terracciano L, Tornillo L, Spagnoli GC. MAGE-A10 is a nuclear protein frequently expressed in high percentages of tumor cells in lung, skin and urothelial malignancies. Int J Cancer 2011; 129:1137-48. [PMID: 21710496 DOI: 10.1002/ijc.25777] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2010] [Accepted: 10/14/2010] [Indexed: 12/24/2022]
Abstract
MAGE-A10 is a highly immunogenic member of the MAGE-A family of cancer/testis tumor-associated antigens (C/T TAAs). Studies performed with broadly reactive antibodies have helped to initially characterize this TAA. However, no specific reagents have been developed so far, thus preventing a thorough analysis of its expression in healthy and tumoral tissues. We have produced MAGE-A10 gene product in soluble recombinant form, and we have used it to generate specific monoclonal antibodies (mAbs). One of these reagents, recognizing an epitope located at the COOH terminus of the MAGE-A10 gene product, was used to stain a multitumor tissue microarray comprising more than 2,500 paraffin-embedded specimens including healthy tissues, benign tumors and malignancies of different histological origin. MAGE-A10 protein was identified as an intranuclear protein of an apparent molecular weight of 70 kDa, expressed in normal spermatogonia and spermatocytes but in no other healthy tissue. Most importantly, this C/T TAA appears to be expressed in high (>50%) percentages of cancer cells from a number of malignancies, including lung, skin and urothelial tumors. Unexpectedly, high expression of MAGE-A10 TAA at the protein level was also detectable in gynecological malignancies and stomach and gall bladder cancers. The characterization of MAGE-A10-specific reagents might set the stage for the development of targeted active immunotherapy by clarifying potential indications and by allowing the selection of patients eligible for treatment and the monitoring of its effectiveness.
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Affiliation(s)
- Elke Schultz-Thater
- Institute for Surgical Research and Hospital Management and Department of Biomedicine, University of Basel, Basel, Switzerland
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Pastorcic-Grgic M, Sarcevic B, Dosen D, Juretic A, Spagnoli GC, Grgic M. Prognostic value of MAGE-A and NY-ESO-1 expression in pharyngeal cancer. Head Neck 2010; 32:1178-84. [PMID: 20029985 DOI: 10.1002/hed.21314] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
BACKGROUND The prognostic value of cancer testis antigens in pharyngeal cancer is understudied. METHODS We recruited 90 patients who were treated for pharyngeal cancer. Monoclonal antibodies 57B and B9.8.1.1 were used for detection of MAGE-A and NY-ESO-1 genes. RESULTS MAGE-A and NY-ESO-1 gene products were detectable in 70.0% and 33.3% of pharyngeal tumors, respectively. No correlation was established between MAGE-A and NY-ESO-1 expression and TNM staging at presentation. Survival analysis showed a trend toward a shorter 5-year disease-free survival in the group of patients with MAGE-A-positive tumors (log-rank test, p = .122). In contrast, a trend toward a prolonged 5-year disease-free survival was observed in the group of patients with NY-ESO-1-positive tumors (log-rank test, p = .219). CONCLUSION In a large population of patients with pharyngeal cancer and available 5-year survival data, prognosis tended to be poorer with MAGE-A expression and better with NY-ESO-1 expression, but the correlations did not reach statistical significance.
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Cuffel C, Rivals JP, Zaugg Y, Salvi S, Seelentag W, Speiser DE, Liénard D, Monnier P, Romero P, Bron L, Rimoldi D. Pattern and clinical significance of cancer-testis gene expression in head and neck squamous cell carcinoma. Int J Cancer 2010; 128:2625-34. [DOI: 10.1002/ijc.25607] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2010] [Accepted: 06/22/2010] [Indexed: 12/17/2022]
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Demirović A, Džombeta T, Tomas D, Spajić B, Pavić I, Hudolin T, Milošević M, Cupić H, Krušlin B. Immunohistochemical expression of tumor antigens MAGE-A3/4 and NY-ESO-1 in renal oncocytoma and chromophobe renal cell carcinoma. Pathol Res Pract 2010; 206:695-9. [PMID: 20591578 DOI: 10.1016/j.prp.2010.05.013] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2010] [Revised: 05/19/2010] [Accepted: 05/27/2010] [Indexed: 10/19/2022]
Abstract
The distinction between renal oncocytoma (RO) and chromophobe renal cell carcinoma (ChRCC), especially the eosinophilic variant, can often be difficult. Our study has documented for the first time the expression of MAGE-A3/4 and NY-ESO-1 cancer testis antigens (CTAs) in these tumors. A total of 35 patients (17 ROs and 18 ChRCCs) were included in the study. Two antibodies were used for immunohistochemical staining: 57B recognizing multiple MAGE-A and D8.38 recognizing NY-ESO-1 CTAs. Fifteen (88.2%) samples of RO stained positively for both MAGE-A3/4 and NY-ESO-1 antigens. Regarding ChRCC, seven (38.9%) stained positively for MAGE-A3/4 and six (33.3%) for NY-ESO-1 antigens. Median MAGE-A3/4 expression was moderately positive in RO and negative in ChRCC. The difference in MAGE-A3/4 expression between two tumor groups was significant (P=0.0013). Median NY-ESO-1 expression was strongly positive in RO and negative in ChRCC. The difference in NY-ESO-1 expression between two tumor groups was also significant (P=0.0008). Our study has shown that RO had a significantly higher expression of both CTAs. However, additional research is needed to clarify their potential diagnostic implications.
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Affiliation(s)
- Alma Demirović
- Ljudevit Jurak University Department of Pathology, Sestre Milosrdnice University Hospital, Zagreb, Croatia.
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Schatton T, Schütte U, Frank NY, Zhan Q, Hoerning A, Robles SC, Zhou J, Hodi FS, Spagnoli GC, Murphy GF, Frank MH. Modulation of T-cell activation by malignant melanoma initiating cells. Cancer Res 2010; 70:697-708. [PMID: 20068175 DOI: 10.1158/0008-5472.can-09-1592] [Citation(s) in RCA: 212] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Highly immunogenic cancers such as malignant melanoma are capable of inexorable tumor growth despite the presence of antitumor immunity. Thus, only a restricted minority of tumorigenic malignant cells may possess the phenotypic and functional characteristics needed to modulate tumor-directed immune activation. Here we provide evidence supporting this hypothesis. Tumorigenic ABCB5(+) malignant melanoma initiating cells (MMICs) possessed the capacity to preferentially inhibit IL-2-dependent T-cell activation and to support, in a B7.2-dependent manner, induction of CD4(+)CD25(+)FoxP3(+) regulatory T cells (Tregs). Compared with melanoma bulk cell populations, ABCB5(+) MMICs displayed lower levels of MHC class I, aberrant positivity for MHC class II, and lower expression levels of the melanoma-associated antigens MART-1, ML-IAP, NY-ESO-1, and MAGE-A. Additionally, these tumorigenic ABCB5(+) subpopulations preferentially expressed the costimulatory molecules B7.2 and PD-1, both in established melanoma xenografts and in clinical tumor specimens. In immune activation assays, MMICs inhibited mitogen-dependent human peripheral blood mononuclear cell (PBMC) proliferation and IL-2 production more efficiently than ABCB5(-) melanoma cell populations. Moreover, coculture with ABCB5(+) MMICs increased the abundance of Tregs, in a B7.2 signaling-dependent manner, along with IL-10 production by mitogen-activated PBMCs. Consistent with these findings, MMICs also preferentially inhibited IL-2 production and induced IL-10 secretion by cocultured patient-derived, syngeneic PBMCs. Our findings identify novel T-cell modulatory functions of ABCB5(+) melanoma subpopulations and suggest specific roles for these MMICs in the evasion of antitumor immunity and in cancer immunotherapeutic resistance.
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Affiliation(s)
- Tobias Schatton
- Transplantation Research Center, Children's Hospital Boston, Boston, Massachusetts 02115, USA
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26
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Sloots A, Mastini C, Rohrbach F, Weth R, Curcio C, Burkhardt U, Jäger E, Forni G, Cavallo F, Wels WS. DNA vaccines targeting tumor antigens to B7 molecules on antigen-presenting cells induce protective antitumor immunity and delay onset of HER-2/Neu-driven mammary carcinoma. Clin Cancer Res 2008; 14:6933-43. [PMID: 18980988 DOI: 10.1158/1078-0432.ccr-08-1257] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
PURPOSE Presentation of tumor antigens by professional antigen-presenting cells (APC) is critical for the induction of tumor-specific T-cell responses. To facilitate targeted delivery of tumor antigens to APC, we generated DNA vaccines that encode secreted fusion proteins consisting of the extracellular domain of CTLA-4 for binding to costimulatory B7 molecules on APC, fused to residues 1 to 222 of human ErbB2 (HER-2) or a corresponding 224 residues fragment of its rat homologue Neu. EXPERIMENTAL DESIGN Induction of humoral and cellular immune responses and antitumoral activity of the DNA vaccines were tested in murine tumor models with transfected renal carcinoma cells expressing the respective antigens and in transgenic BALB-neuT mice developing spontaneous Neu-driven mammary carcinomas. RESULTS Vaccination of BALB/c mice with CTLA-4-ErbB2(222) plasmid DNA markedly improved tumor-free survival on challenge with ErbB2-expressing Renca cells in comparison with untargeted ErbB2(222), accompanied by induction of stronger ErbB2-specific antibody and CTL responses. Likewise, a CTLA-4 vaccine carrying the unrelated NY-ESO-1 cancer-germline antigen was more effective than untargeted NY-ESO-1 in the protection of mice from challenge with NY-ESO-1-expressing tumor cells. Importantly, antitumoral activity of such a CTLA-4 fusion vaccine could be reproduced in immunotolerant BALB-neuT mice, where a corresponding CTLA-4-Neu(224) DNA vaccine markedly delayed the onset of spontaneous Neu-driven mammary carcinomas. CONCLUSIONS Our results show that plasmid DNA vaccines for in vivo expression of tumor antigens targeted to APC induce potent immune responses and antitumoral activities, providing a rationale for further development of this approach for specific cancer immunotherapy.
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Affiliation(s)
- Arjen Sloots
- Chemotherapeutisches Forschungsinstitut Georg-Speyer-Haus, Frankfurt am Main, Germany
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27
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Jungbluth AA, Silva WA, Iversen K, Frosina D, Zaidi B, Coplan K, Eastlake-Wade SK, Castelli SB, Spagnoli GC, Old LJ, Vogel M. Expression of cancer-testis (CT) antigens in placenta. CANCER IMMUNITY 2007; 7:15. [PMID: 17715884 PMCID: PMC2935757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 05/23/2007] [Accepted: 06/25/2007] [Indexed: 05/16/2023]
Abstract
Besides their variable presence in fetal and adult germ cells, CT antigens have occasionally been detected in placental tissue. However, these data are scarce and solely based on mRNA analyses; nothing is known about their presence at the protein level. Here, we analyzed the expression of various CT antigens in placental tissues from gestational age week 5 to week 42 using monoclonal antibodies to various antigens of the MAGE-A and -C families, NY-ESO-1, as well as GAGE. We show that CT antigen expression in placenta varies widely for the various antigens, ranging from completely negative to abundant. Since little is known about the function and biology of CT antigens, interpretation of this highly variable expression pattern is purely speculative. However, our data indicate that the various CT antigens have different functions during placental development.
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Affiliation(s)
- Achim A Jungbluth
- New York Branch, Ludwig Institute for Cancer Research, New York, NY 10021, USA.
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28
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Velazquez EF, Jungbluth AA, Yancovitz M, Gnjatic S, Adams S, O'Neill D, Zavilevich K, Albukh T, Christos P, Mazumdar M, Pavlick A, Polsky D, Shapiro R, Berman R, Spira J, Busam K, Osman I, Bhardwaj N. Expression of the cancer/testis antigen NY-ESO-1 in primary and metastatic malignant melanoma (MM)--correlation with prognostic factors. CANCER IMMUNITY 2007; 7:11. [PMID: 17625806 PMCID: PMC2935749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Received: 03/13/2007] [Accepted: 04/23/2007] [Indexed: 05/16/2023]
Abstract
Cancer/testis (CT) antigens are potential targets for cancer immunotherapy, with NY-ESO-1 being among the most immunogenic. In several clinical trials in malignant melanoma (MM) patients, NY-ESO-1 protein/peptides showed clear evidence of inducing specific immunity. However, little is known about NY-ESO-1 expression in primary and metastatic MM and its relationship to disease progression. We analyzed NY-ESO-1 expression immunohistochemically in a series of primary and metastatic MMs and its relation to prognostic parameters and survival. We studied 61 primary and 63 metastatic MM specimens (from 61 and 56 patients, respectively). The prevalence of NY-ESO-1 expression was significantly higher in metastatic versus primary tumors [18/56 (32%) versus 8/61 (13%), P = 0.015]. There was a significant association between initial stage at presentation and NY-ESO-1 expression [stage I (3.45%), stage II (9.52%) and stage III (45.45%), P = 0.0014]. Primary MMs expressing NY-ESO-1 were significantly thicker than NY-ESO-1 negative cases (median thickness 4.7 mm versus 1.53 mm respectively, P = 0.03). No significant difference was seen in overall survival. In conclusion, NY-ESO-1 is more frequently expressed in metastatic than in primary MM and its expression is associated with thicker primary lesions and a higher frequency of metastatic disease, indicative of a worse prognosis. Our study suggests that patients with metastatic MM who express NY-ESO-1 may benefit from NY-ESO-1-based immunotherapy.
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Affiliation(s)
- Elsa F. Velazquez
- Ronald O. Perelman Department of Dermatology,
New York University School of MedicineNew
York, NYUSA
- Department of Pathology, New York University
School of MedicineNew York, NYUSA
- Department of Pathology, Brigham and
Women's Hospital, Harvard Medical SchoolBoston,
MAUSA
| | | | - Molly Yancovitz
- Ronald O. Perelman Department of Dermatology,
New York University School of MedicineNew
York, NYUSA
| | | | - Sylvia Adams
- Department of Medicine, New York University
School of MedicineNew York, NYUSA
| | - David O'Neill
- Department of Medicine, New York University
School of MedicineNew York, NYUSA
| | - Kira Zavilevich
- Department of Medicine, New York University
School of MedicineNew York, NYUSA
| | - Tatyana Albukh
- Department of Medicine, New York University
School of MedicineNew York, NYUSA
| | - Paul Christos
- Department of Public Health, Weill Medical
College of Cornell UniversityNew York,
NYUSA
| | - Madhu Mazumdar
- Department of Public Health, Weill Medical
College of Cornell UniversityNew York,
NYUSA
| | - Anna Pavlick
- Ronald O. Perelman Department of Dermatology,
New York University School of MedicineNew
York, NYUSA
- Department of Surgery, New York University
School of MedicineNew York, NYUSA
| | - David Polsky
- Ronald O. Perelman Department of Dermatology,
New York University School of MedicineNew
York, NYUSA
| | - Richard Shapiro
- Department of Surgery, New York University
School of MedicineNew York, NYUSA
| | - Russell Berman
- Department of Surgery, New York University
School of MedicineNew York, NYUSA
| | - Joanna Spira
- Ronald O. Perelman Department of Dermatology,
New York University School of MedicineNew
York, NYUSA
| | - Klaus Busam
- Department of Pathology, Memorial Sloan-Kettering
Cancer CenterNew York, NYUSA
| | - Iman Osman
- Ronald O. Perelman Department of Dermatology,
New York University School of MedicineNew
York, NYUSA
- Department of Medicine, New York University
School of MedicineNew York, NYUSA
| | - Nina Bhardwaj
- Ronald O. Perelman Department of Dermatology,
New York University School of MedicineNew
York, NYUSA
- Department of Pathology, New York University
School of MedicineNew York, NYUSA
- Department of Medicine, New York University
School of MedicineNew York, NYUSA
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Alves PMS, Lévy N, Bouzourene H, Viatte S, Bricard G, Ayyoub M, Vuilleumier H, Givel JCR, Halkic N, Speiser DE, Romero P, Lévy F. Molecular and immunological evaluation of the expression of cancer/testis gene products in human colorectal cancer. Cancer Immunol Immunother 2007; 56:839-47. [PMID: 16960690 PMCID: PMC11030638 DOI: 10.1007/s00262-006-0228-5] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2006] [Accepted: 08/08/2006] [Indexed: 01/07/2023]
Abstract
Tumor-specific gene products, such as cancer/testis (CT) antigens, constitute promising targets for the development of T cell vaccines. Whereas CT antigens are frequently expressed in melanoma, their expression in colorectal cancers (CRC) remains poorly characterized. Here, we have studied the expression of the CT antigens MAGE-A3, MAGE-A4, MAGE-A10, NY-ESO-1 and SSX2 in CRC because of the presence of well-described HLA-A2-restricted epitopes in their sequences. Our analyses of 41 primary CRC and 14 metastatic liver lesions confirmed the low frequency of expression of these CT antigens. No increased expression frequencies were observed in metastatic tumors compared to primary tumors. Histological analyses of CRC samples revealed heterogeneous expression of individual CT antigens. Finally, evidence of a naturally acquired CT antigen-specific CD8(+) T cell response could be demonstrated. These results show that the expression of CT antigens in a subset of CRC patients induces readily detectable T cell responses.
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Affiliation(s)
- Pedro M. S. Alves
- NCCR, Molecular Oncology, ISREC, Ch. des Boveresses 155, 1066 Epalinges, Switzerland
- Ludwig Institute for Cancer Research, Lausanne Branch, University of Lausanne, Ch. des Boveresses 155, 1066 Epalinges, Switzerland
- Division of Clinical Onco-Immunology, Ludwig Institute for Cancer Research, Lausanne Branch, University Hospital (CHUV), 1005 Lausanne, Switzerland
| | - Nicole Lévy
- Department of Biochemistry, University of Lausanne, Ch. des Boveresses 155, 1066 Epalinges, Switzerland
| | - Hanifa Bouzourene
- Institute of Pathology, University of Lausanne, rue du Bugnon 25, 1011 Lausanne, Switzerland
| | - Sébastien Viatte
- NCCR, Molecular Oncology, ISREC, Ch. des Boveresses 155, 1066 Epalinges, Switzerland
- Ludwig Institute for Cancer Research, Lausanne Branch, University of Lausanne, Ch. des Boveresses 155, 1066 Epalinges, Switzerland
| | - Gabriel Bricard
- Division of Clinical Onco-Immunology, Ludwig Institute for Cancer Research, Lausanne Branch, University Hospital (CHUV), 1005 Lausanne, Switzerland
| | - Maha Ayyoub
- Division of Clinical Onco-Immunology, Ludwig Institute for Cancer Research, Lausanne Branch, University Hospital (CHUV), 1005 Lausanne, Switzerland
| | - Henri Vuilleumier
- Department of Visceral Surgery, University Hospital (CHUV), 1011 Lausanne, Switzerland
| | - Jean-Claude R. Givel
- Department of Visceral Surgery, University Hospital (CHUV), 1011 Lausanne, Switzerland
| | - Nermin Halkic
- Department of Visceral Surgery, University Hospital (CHUV), 1011 Lausanne, Switzerland
| | - Daniel E. Speiser
- Division of Clinical Onco-Immunology, Ludwig Institute for Cancer Research, Lausanne Branch, University Hospital (CHUV), 1005 Lausanne, Switzerland
| | - Pedro Romero
- NCCR, Molecular Oncology, ISREC, Ch. des Boveresses 155, 1066 Epalinges, Switzerland
- Division of Clinical Onco-Immunology, Ludwig Institute for Cancer Research, Lausanne Branch, University Hospital (CHUV), 1005 Lausanne, Switzerland
| | - Frédéric Lévy
- NCCR, Molecular Oncology, ISREC, Ch. des Boveresses 155, 1066 Epalinges, Switzerland
- Ludwig Institute for Cancer Research, Lausanne Branch, University of Lausanne, Ch. des Boveresses 155, 1066 Epalinges, Switzerland
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30
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Groeper C, Gambazzi F, Zajac P, Bubendorf L, Adamina M, Rosenthal R, Zerkowski HR, Heberer M, Spagnoli GC. Cancer/testis antigen expression and specific cytotoxic T lymphocyte responses in non small cell lung cancer. Int J Cancer 2007; 120:337-43. [PMID: 17066423 DOI: 10.1002/ijc.22309] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Non small cell lung cancers (NSCLC) express cancer/testis antigens (CTA) genes and MAGE-A expression correlates with poor prognosis in squamous cell carcinomas. We addressed cytotoxic T lymphocytes (CTL) responses to HLA class I restricted CTA epitopes in TIL from NSCLC in an unselected group of 33 patients consecutively undergoing surgery. Expression of MAGE-A1, -A2, -A3, -A4, -A10, -A12 and NY-ESO-1 CTA genes was tested by quantitative RT-PCR. Monoclonal antibodies (MAb) recognizing MAGE-A and NY-ESO-1 CTA were used to detect CTA by immunohistochemistry. CD8(+) TIL obtained from tumors upon culture with anti CD3 and anti CD28 mAb and IL-2 were stimulated with autologous mature DC (mDC) and HLA-A*0101 restricted MAGE-A1(161-169) or MAGE-A3(168-176) peptides or HLA-A*0201 restricted MAGE-A4(230-239), MAGE-A10(254-262), NY-ESO-1(157-165) or multi-MAGE-A (YLEYRQVPV) peptides or a recombinant vaccinia virus (rVV) encoding MAGE-A and NY-ESO-1 HLA-A*0201 restricted epitopes and CD80 co-stimulatory molecule. Specificity was assessed by (51)Cr release and multimer staining. At least one CTA gene was expressed in tumors from 15/33 patients. In 10 specimens, at least 4 CTA genes were concomitantly expressed. These data were largely confirmed by immunohistochemistry. TIL were expanded from 26/33 specimens and CTA-specific CTL activity was detectable in 7/26 TIL. In 6, however, specific cytotoxicity was weak, (<40% lysis at a 50:1 E:T ratio) and multimer staining was undetectable. In one case, high (>60% lysis at 50:1 E:T ratio) MAGE-A10(254-262) specific, HLA-A*0201 restricted response was observed. Supportive evidence was provided by corresponding multimer staining. Although CTA genes are frequently expressed in NSCLC, detection of CTL reactivity against CTA epitopes in TIL from nonimmunized NSCLC patients represents a rare event.
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Affiliation(s)
- Célia Groeper
- Institute for Surgical Research and Hospital Management, Department of Research, University Hospital, Basel, Switzerland
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Abstract
Most patients with poor-prognosis myeloma (abnormal metaphase cytogenetics) achieve excellent responses with tandem transplants, but the remissions are not durable. Novel interventions such as immunotherapy may eradicate the residual chemotherapy-resistant disease. Immunotherapy targeting weak antigens such as myeloma idiotype or tumor lysate has failed to produce clinically meaningful responses. We previously reported that the NY-ESO-1 antigen is expressed in >60% of poor-prognosis myeloma at diagnosis. Since NY-ESO-1 is highly immunogenic and is not expressed in most normal tissues, it is an ideal target for anti-myeloma immunotherapy. NY-ESO-1 based therapies are already being tested in clinical trials for a multitude of tumors. This review discusses the potential of NY-ESO-1 immunotherapy to improve outcome for myeloma.
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Affiliation(s)
- Susann Szmania
- Myeloma Institute for Research and Therapy, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
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32
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Buckanovich RJ. Ovarian cancer vaccine trials and tribulations. Expert Opin Biol Ther 2006; 7:103-12. [PMID: 17150022 DOI: 10.1517/14712598.7.1.103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Solid tumor vaccine therapy is coming of age. After years of failures, setbacks and negative trials, the first positive trials of antitumor vaccines in humans are being seen. Antitumor vaccine trials have reported an improvement in progression-free survival in breast cancer and an overall survival advantage in prostate cancer. Although, to date no positive Phase III antitumor vaccines trials in ovarian cancer have been reported, recent great strides have been made in improving tumor vaccine target antigens, improving antigen presentation and understanding the mechanisms of immunosuppression associated with tumors. In addition, biological therapies are now being identified that may enhance the efficacy of tumor vaccines. This review summarizes recent trials of ovarian cancer vaccines and addresses future directions to improve vaccine efficacy.
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Affiliation(s)
- Ronald J Buckanovich
- University of Michigan Comprehensive Cancer Center, Division of Hematology-Oncology and Division of Gynecologic Oncology, 1500 East Medical Center Drive, Ann Arbor, Michigan 48109, 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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Voo KS, Zeng G, Mu JB, Zhou J, Su XZ, Wang RF. CD4+ T-cell response to mitochondrial cytochrome B in human melanoma. Cancer Res 2006; 66:5919-26. [PMID: 16740732 DOI: 10.1158/0008-5472.can-05-4574] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Mitochondrial DNA (mtDNA) is highly susceptible to mutations due to the low level of DNA repair and the presence of a high level of reactive oxygen species in the organelle. Although mtDNA mutations have been implicated in degenerating diseases, aging, and cancer, very little is known about the role of T cells in immunosurveillance for mtDNA aberrations. Here, we describe T-cell recognition of a peptide translated from an alternative open reading frame of the mitochondrial cytochrome b (cyt b) gene in melanoma cells established from a patient. To understand how the cyt b gene is transcribed and translated in tumor cells, we found that cyt b-specific CD4(+) T cells only recognized protein fractions derived from cytoplasm and not from mitochondria. However, T-cell recognition of tumor cells could be inhibited by treatment of tumor cells with rhodamine 6G inhibitor, which depletes mitochondria. These findings suggest that cyt b mRNA is leaked out of the mitochondria and then translated in the cytoplasm for presentation to CD4(+) T cells. The cyt b cDNAs from this patient contain highly heteroplasmic transition mutations compared with control cell lines, suggesting a compromise of mitochondrial integrity that may have contributed to melanoma induction or progression. These findings provide the first example of a mitochondrial immune target for CD4(+) T cells and therefore have implications for the immunosurveillance of mitochondrial aberrations in cancer patients.
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Affiliation(s)
- Kui Shin Voo
- The Center for Cell and Gene Therapy and Department of Immunology, Baylor College of Medicine, Houston, Texas, USA
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Hudolin T, Juretic A, Pasini J, Tomas D, Spagnoli GC, Heberer M, Dimanovski J, Kruslin B. Immunohistochemical expression of tumor antigens MAGE-A1, MAGE-A3/4, and NY-ESO-1 in squamous cell carcinoma of the penis. Urology 2006; 68:205-7. [PMID: 16806422 DOI: 10.1016/j.urology.2006.01.033] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2005] [Revised: 12/09/2005] [Accepted: 01/11/2006] [Indexed: 10/24/2022]
Abstract
OBJECTIVES To investigate by immunohistochemistry the expression of MAGE-A and NY-ESO-1/LAGE-1, cancer testis antigens (CTAs), in squamous cell carcinoma of the penis. METHODS A total of 30 penile carcinoma samples from patients undergoing penile amputation at the Urology Clinics at the Zagreb Clinical Hospital Center and University Hospital "Sestre milosrdnice" from 1997 to 2004 were investigated in this study. Three monoclonal antibodies were used for immunohistochemical staining: 77B specific for MAGE-A1, 57B recognizing multiple MAGE-A CTAs, and D8.38, specific for NY-ESO-1 antigen. RESULTS The expression of MAGE-A1 was not observed in the carcinoma samples, but both multi-MAGE-A and NY-ESO-1-specific reagents stained 29 (97%) of 30 samples. Immunohistochemical staining was prevailingly detected in the cytoplasm. A significant heterogeneity was observed within the same specimen, in which areas with strong positivity coexisted with CTA-negative areas. The extent of CTA expression did not correlate significantly with tumor grade. CONCLUSIONS The results of this study have documented for the first time the expression of CTAs in squamous cell carcinoma of the penis. Additional research is warranted to explore the potential implications regarding both diagnosis and therapy.
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Affiliation(s)
- Tvrtko Hudolin
- Department of Urology, Zagreb University Hospital Center, KBC Zagreb, Klinika za urologiju, Zagreb, Croatia.
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Bandić D, Juretić A, Šarčević B, Šeparović V, Kujundžić Tiljak M, Hudolin T, Spagnoli GC, Čović D, Šamija M. Expression and possible prognostic role of MAGE-A4, NY-ESO-1, and HER-2 antigens in women with relapsing invasive ductal breast cancer: retrospective immunohistochemical study. Croat Med J 2006; 47:32-41. [PMID: 16489695 PMCID: PMC2080373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/06/2023] Open
Abstract
AIM To evaluate the possible prognostic role of the expression of MAGE-A4 and NY-ESO-1 cancer/testis antigens in women diagnosed with invasive ductal breast cancer and determine the expression of HER-2 antigen. METHODS The expression of MAGE-A4, NY-ESO-1, and HER-2 antigens was evaluated immunohistochemically on archival paraffin-embedded samples of breast cancer tissue from 81 patients. All patients had T1 to T3, N0 to N1, M0 tumors and underwent postoperative radiotherapy and, if indicated, systemic therapy (chemotherapy and hormonal therapy). The antigen expression in women who were disease-free for 5 years of follow up (n=23) was compared with that in women with either locoregional relapse (n=30) or bone metastases (n=28). Patient survival after 10 years of follow up was assessed. RESULTS The three groups of women were comparable in terms of age, type of operation, tumor size, tumor grade, number of metastatically involved axillary lymph nodes, Nottingham prognostic index (NPI), progesterone receptor (PR) status, and adjuvant hormonal therapy. Estrogen receptors (ER) were positive in 13 women in the 5-year relapse-free group vs 8 in locoregional relapse and 7 in bone metastases group (P=0.032). There were significantly fewer women who received adjuvant chemotherapy in the 5-year relapse-free group than in other two groups (7 vs 23 with locoregional relapse and 25 with bone metastases; P<0.001). This group also had a significantly better 10-year survival (14 women vs 1 with locoregional relapse and 1 with bone metastases; P<0.001). The three groups did not differ in the NY-ESO-1 or HER-2 expression, but the number of patients expressing MAGE-A4 antigen was significantly lower in the group with locoregional relapse (P=0.014). In all groups, MAGE-A4 antigen expression was associated with the NY-ESO-1 antigen expression (P=0.006), but not with tumor size and grade, number of metastatically involved axillary lymph nodes, or the ER and PR status. MAGE-A4-positive patients had a significantly longer survival than the MAGE-A4-negative patients (P=0.046). This was not observed with NY-ESO-1 and HER-2 antigens. CONCLUSION Our results suggest that the MAGE-A4 antigen may be used as a tumor marker of potential prognostic relevance.
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MESH Headings
- Adult
- Aged
- Aged, 80 and over
- Antigens, Neoplasm/analysis
- Biomarkers, Tumor/analysis
- Breast Neoplasms/metabolism
- Breast Neoplasms/mortality
- Breast Neoplasms/pathology
- Breast Neoplasms/therapy
- Carcinoma, Ductal, Breast/metabolism
- Carcinoma, Ductal, Breast/mortality
- Carcinoma, Ductal, Breast/pathology
- Carcinoma, Ductal, Breast/therapy
- Female
- Humans
- Immunohistochemistry
- Membrane Proteins/analysis
- Middle Aged
- Neoplasm Proteins/analysis
- Neoplasm Recurrence, Local/metabolism
- Prognosis
- Receptor, ErbB-2/analysis
- Survival Rate
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Affiliation(s)
- Daniela Bandić
- Department of Anesthesiology, University Hospital for Tumors, Zagreb, Croatia
| | - Antonio Juretić
- Department of Oncology, Zagreb University Hospital Center, Zagreb, Croatia
| | - Božena Šarčević
- Department of Pathology, University Hospital for Tumors, Zagreb, Croatia
| | - Viktor Šeparović
- Department of Pathology, University Hospital for Tumors, Zagreb, Croatia
| | - Mirjana Kujundžić Tiljak
- Department of Medical Statistics, Epidemiology and Medical Informatics, Andrija Štampar School of Public Health, Zagreb University School of Medicine, Zagreb, Croatia
| | - Tvrtko Hudolin
- Department of Urology, Zagreb University Hospital Center, Zagreb, Croatia
| | - Giulio C. Spagnoli
- Department of Surgery, Research Laboratory, University Hospital Basel, Basel, Switzerland
| | - Dinko Čović
- Department of Anesthesiology, University Hospital for Tumors, Zagreb, Croatia
| | - Mirko Šamija
- Department of Anesthesiology, University Hospital for Tumors, Zagreb, Croatia
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Hudolin T, Juretic A, Spagnoli GC, Pasini J, Bandic D, Heberer M, Kosicek M, Cacic M. Immunohistochemical expression of tumor antigens MAGE-A1, MAGE-A3/4, and NY-ESO-1 in cancerous and benign prostatic tissue. Prostate 2006; 66:13-8. [PMID: 16114059 DOI: 10.1002/pros.20312] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECTIVE To investigate immunohistochemical expression of MAGE-A and NY-ESO-1/LAGE-1, cancer testis antigens in prostate tissues showing evidence of malignant transformation or benign hyperplasia. METHODS 112 prostate samples from patients undergoing surgery at the Urology Clinic at the Zagreb Clinical Hospital Center from 1995 to 2003 were investigated in this study. Of these, 92 carcinoma samples were obtained by radical prostatectomy, and 20 benign prostatic hyperplasia samples by transvesical prostatectomy. Three monoclonal antibodies were used for immunohistochemical staining: 77B for MAGE-A1, 57B for multi-MAGE-A and D8.38 for NY-ESO-1 expression. RESULTS Expression of MAGE-A1 was observed in 10.8% of carcinoma samples, whereas multi-MAGE-A and NY-ESO-1/LAGE-1 stained 85.9% and 84.8% of samples. Immunohistochemical staining was only detectable in the cytoplasm. A significant heterogeneity could be observed within a same tissue sample where areas with strong positivities coexisted with cancer testis antigens negative areas. Interestingly, a majority of 57B positive cases were also found to be D8.38 positive (correlation coefficient r=0.727 (P<0.01)). Cancer testis antigens expression was neither significantly correlated with PSA values nor with Gleason score. In benign prostatic hyperplasia tissues MAGE-A1 expression was detected in 5%, while 57B and D8.38 staining was observed in 15% samples, and in all cases percentages of positive cells were always <10%. CONCLUSION Our data underline the peculiar relevance of cancer testis antigens expression in prostate cancers, with potential implications regarding both diagnosis and therapy.
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Affiliation(s)
- Tvrtko Hudolin
- Department of Urology, Zagreb University Hospital Center, Zagreb, Croatia.
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38
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Batchu RB, Moreno AM, Szmania SM, Bennett G, Spagnoli GC, Ponnazhagan S, Barlogie B, Tricot G, van Rhee F. Protein transduction of dendritic cells for NY-ESO-1-based immunotherapy of myeloma. Cancer Res 2005; 65:10041-9. [PMID: 16267030 DOI: 10.1158/0008-5472.can-05-1383] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Myeloma vaccines, based on dendritic cells pulsed with idiotype or tumor lysate, have been met with limited success, probably in part due to insufficient cross-priming of myeloma antigens. A powerful method to introduce myeloma-associated antigens into the cytosol of dendritic cells is protein transduction, a process by which proteins fused with a protein transduction domain (PTD) freely traverse membrane barriers. NY-ESO-1, an immunogenic antigen by itself highly expressed in 60% of high-risk myeloma patients, was purified to near homogeneity both alone and as a recombinant fusion protein with a PTD, derived from HIV-Tat. Efficient entry of PTD-NY-ESO-1 into dendritic cells, confirmed by microscopy, Western blotting, and intracellular flow cytometry, was achieved without affecting dendritic cell phenotype. Experiments with amiloride, which inhibits endocytosis, and N-acetyl-l-leucinyl-l-norleucinal, a proteasome inhibitor, confirmed that PTD-NY-ESO-1 entered dendritic cells by protein transduction and was degraded by the proteasome. Tetramer analysis indicated superior generation of HLA-A2.1, CD8+ T lymphocytes specific for NY-ESO-1(157-165) with PTD-NY-ESO-1 compared with NY-ESO-1 control protein (44% versus 2%, respectively). NY-ESO-1-specific T lymphocytes generated with PTD-NY-ESO-1 secreted IFN-gamma indicative of a Tc1-type cytokine response. Thus, PTD-NY-ESO-1 accesses the cytoplasm by protein transduction, is processed by the proteasome, and NY-ESO-1 peptides presented by HLA class I elicit NY-ESO-1-specific T lymphocytes.
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Affiliation(s)
- Ramesh B Batchu
- Myeloma Institute for Research and Therapy, Section for Gene and Immunotherapy, University of Arkansas for Medical Sciences, Little Rock, Arkansas 72205, USA
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39
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Bolli M, Schultz-Thater E, Zajac P, Guller U, Feder C, Sanguedolce F, Carafa V, Terracciano L, Hudolin T, Spagnoli GC, Tornillo L. NY-ESO-1/LAGE-1 coexpression with MAGE-A cancer/testis antigens: a tissue microarray study. Int J Cancer 2005; 115:960-6. [PMID: 15751033 DOI: 10.1002/ijc.20953] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
The characterization of the expression pattern of different families of cancer/testis (C/T) antigens in different tumors, at the protein level, might be of relevance in the development of multiantigen vaccine preparations for active specific immunotherapy. We have used tissue microarray (TMA) technology to explore in large numbers of tumor specimens the expression of NY-ESO-1/LAGE-1 C/T antigens and its correlation with MAGE-A expression by using D8.38 and 57B monoclonal antibodies (MAb). The epitopes recognized by these reagents in C/T antigens were identified by molecular mapping by using a bacterial expression system. Out of 2,052 samples, 119 (5.8%) scored positive upon staining with D8.38 NY-ESO-1/LAGE-1-specific MAb. Expression in >10% of cases was detectable in melanoma and basalioma (31.6 and 18.2%, respectively), large cell carcinomas and adenocarcinomas of the lung (17.8 and 10.5%, respectively), stomach adenocarcinomas of the intestinal type (13.2%), pT2-4 bladder TCC (18.2%), nonseminomatous carcinomas of the testis (10.4%) and liposarcomas (15.4%). Simultaneous expression of NY-ESO-1/LAGE-1 and MAGE-A C/T antigens was then addressed in a TMA where 101/845 and 73/845 samples (12 and 8.6%, respectively) showed evidence of MAGE-A or NY-ESO-1/LAGE-1 specific staining, respectively. In 35/845 specimens (4.1%) concomitant expression of MAGE-A and NY-ESO-1/LAGE-1 was observed (p = 0.0002). Discrepancies in the expression of NY-ESO-1/LAGE-1 and MAGE-A were conspicuously detectable in squamous cell carcinomas of the skin (MAGE-A positive but NY-ESO-1/LAGE-1 negative) and in liposarcomas (NY-ESO-1/LAGE-1 positive, but MAGE-A negative). Taken together, these data suggest novel areas of application of C/T antigens targeted active specific immunotherapy possibly based on multiantigen vaccine preparations.
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Affiliation(s)
- Martin Bolli
- Institut Chirurgische Forschung und Spitalmanagement, Department Forschung, University of Basel, Switzerland
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40
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Cronwright G, Le Blanc K, Götherström C, Darcy P, Ehnman M, Brodin B. Cancer/testis antigen expression in human mesenchymal stem cells: down-regulation of SSX impairs cell migration and matrix metalloproteinase 2 expression. Cancer Res 2005; 65:2207-15. [PMID: 15781633 DOI: 10.1158/0008-5472.can-04-1882] [Citation(s) in RCA: 106] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Several families of genes by and large located on the X chromosome encode proteins of unspecified function. Commonly known as cancer/testis (CT) antigens, they are considered, under normal conditions, only to be expressed in cells of the germ line and placenta. CT genes are also often expressed in cancer cells, hence their classification. Here we report that their expression in normal cells is wider spread and can be observed in cells with the potential for self-renewal and pleuripotency, namely, stem cells. Several CT genes and their products, CT antigens, including SSX, NY-ESO-1, and N-RAGE, were expressed in undifferentiated mesenchymal stem cells (MSCs) and down-regulated after osteocyte and adipocyte differentiation. To elucidate the possible overlapping function played by these genes in cancer and stem cells, a comparative analysis of the localization of their proteins was made. In addition, localization relative to other MSC markers was examined. This revealed that SSX localizes in the cytoplasm and overlap occurs in regions where matrix metalloproteinase 2 (MMP2) and vimentin accumulate. Nevertheless, it was found that no protein interactions between these molecules occur. Further investigation revealed that the migration of a melanoma cell line (DFW), which expresses SSX, MMP2, and vimentin, decreases when SSX is down-regulated. This decrease in cell migration was paralleled by a reduction in MMP2 levels. Analogous to this, SSX expression is down-regulated in MSCs after differentiation; concomitantly a reduction in MMP2 levels occurs. In addition, E-cadherin expression increases, mimicking a mesenchymal epithelial transition. These results afford SSX a functional role in normal stem cell migration and suggest a potentially similar function in cancer cell metastases.
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Affiliation(s)
- Garth Cronwright
- Department of Oncology and Pathology, Karolinska Institutet, Sweden
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41
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Yang XA, Dong XY, Qiao H, Wang YD, Peng JR, Li Y, Pang XW, Tian C, Chen WF. Immunohistochemical analysis of the expression of FATE/BJ-HCC-2 antigen in normal and malignant tissues. J Transl Med 2005; 85:205-13. [PMID: 15580283 DOI: 10.1038/labinvest.3700220] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
FATE/BJ-HCC-2 is a newly identified cancer/testis (CT) antigen, which was detected in tumor tissues and testis. As previous studies of FATE/BJ-HCC-2 expression pattern were mainly based on messenger RNA (mRNA) analysis, it is necessary to investigate its actual protein expression pattern in tumor tissues for the evaluation of its application value. In this study, we produced specific polyclonal antibody (pAb) to the recombinant FATE/BJ-HCC-2 protein and analyzed the FATE/BJ-HCC-2 antigen expression in normal and malignant tissues by the immunohistochemical approach. The results showed that there was no detectable FATE/BJ-HCC-2 antigen expressed in normal tissues except testis. In hepatocellular carcinoma (HCC) tissues, the FATE/BJ-HCC-2 antigen was detected in 20% (7/35) specimens. All samples that expressed the FATE/BJ-HCC-2 antigen were of poorly or moderately differentiated HCC. The stained antigen was located in the cytoplasm and the staining pattern showed heterogeneity from focal to more than 40% of the tumor cells. The FATE/BJ-HCC-2 antigen was also expressed in other tumor tissues. The results of [3H]thymidine incorporation showed that FATE/BJ-HCC-2 protein enhanced tumor cell proliferation after transfection of FATE/BJ-HCC-2 gene in HCC cell line (P<0.01). This effect could be specifically blocked by anti-FATE/BJ-HCC-2 pAb. Serological screening showed that the antibody specific to the FATE/BJ-HCC-2 antigen was detected in 7.7% (4/52) patients. Notably, the four positive patients bore poorly or moderately differentiated HCC. FATE/BJ-HCC-2 mRNA transcript was detected in the peripheral blood mononuclear cells (PBMCs) of 46.67% patients whose resected HCC tissue samples were positive for FATE/BJ-HCC-2 mRNA, which implicated tumor cell dissemination in blood circulation and may relate to the metastasis of HCC. Thus, FATE/BJ-HCC-2 may be a valuable candidate CT antigen for polyvalent vaccines in tumor immunotherapy and an assisting diagnostic marker for prognosis of the disease.
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Affiliation(s)
- Xiao Ang Yang
- Department of Immunology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
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42
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van Rhee F, Szmania SM, Zhan F, Gupta SK, Pomtree M, Lin P, Batchu RB, Moreno A, Spagnoli G, Shaughnessy J, Tricot G. NY-ESO-1 is highly expressed in poor-prognosis multiple myeloma and induces spontaneous humoral and cellular immune responses. Blood 2005; 105:3939-44. [PMID: 15671442 PMCID: PMC1895070 DOI: 10.1182/blood-2004-09-3707] [Citation(s) in RCA: 160] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
The presence of a metaphase cytogenetic abnormality (CA) is the key negative predictor of outcome in patients with multiple myeloma (MM). Gene expression profiling (GEP) of such patients showed increased expression of NY-ESO-1 compared to patients with normal cytogenetics (60% versus 31%; P = .004). NY-ESO-1 was also highly expressed in relapsing MM especially patients with CA (100% versus 60.7%; P < .001). GEP findings were confirmed at the protein level by immunostaining of marrow biopsies for NY-ESO-1. We detected spontaneous NY-ESO-1-specific antibodies by enzyme-linked immunosorbent assay in 33% of patients with NY-ESO-1+ MM, especially in CA patients (9 of 13; 70%), but in none of the NY-ESO-1- patients with MM (n = 27) or healthy donors (n = 21). Spontaneous NY-ESO-1(157-165)-specific T cells (0.2%-0.6% of CD8+ T cells) were found in the peripheral blood of NY-ESO-1+ MM with HLA-A*0201/NY-ESO-1(157-165) tetramers. These NY-ESO-1-specific T cells, when expanded, killed primary MM cells (50% lysis, effector-target [E/T] ratio, 10:1). Our data demonstrate that NY-ESO-1 is frequently expressed in MM with CA and is capable of eliciting spontaneous humoral and T-cell immunity. The pool of NY-ESO-1-specific cytotoxic T cells expands easily on NY-ESO-1 peptide stimulation and is functionally active. NY-ESO-1 should therefore be an ideal tumor target antigen for immunotherapy of patients with poor-prognosis MM.
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Affiliation(s)
- Frits van Rhee
- University of Arkansas for Medical Sciences, Myeloma Institute for Research and Therapy, 4301 West Markham, no. 776, Little Rock, AR 72205, USA.
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43
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Vaughan HA, Svobodova S, Macgregor D, Sturrock S, Jungbluth AA, Browning J, Davis ID, Parente P, Chen YT, Stockert E, St Clair F, Old LJ, Cebon J. Immunohistochemical and Molecular Analysis of Human Melanomas for Expression of the Human Cancer-Testis Antigens NY-ESO-1 and LAGE-1. Clin Cancer Res 2004; 10:8396-404. [PMID: 15623618 DOI: 10.1158/1078-0432.ccr-04-0809] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
PURPOSE NY-ESO-1 and LAGE-1 are homologous cancer-testis antigens, which are expressed in many different cancers. It is essential to type tumors accurately to assess patient suitability for clinical trials which target these. This study evaluates typing strategies used to distinguish these two homologous but distinct antigens and to characterize and quantitate expression of each in clinical samples. EXPERIMENTAL DESIGN We typed 120 malignant melanomas for the expression of NY-ESO-1 and LAGE-1 with immunohistochemistry, reverse transcription-PCR (RT-PCR), and quantitative real-time (qRT-PCR), which was also used to explore the relationship between NY-ESO-1 and LAGE expression. RESULTS The two monoclonal antibodies ES121 and E978 had very similar immunohistochemistry reactivities. Both were specific for NY-ESO-1 because neither bound to homologous LAGE-1 peptides despite 84% overall amino acid homology. Of 120 melanomas tested by immunohistochemistry, NY-ESO-1 was expressed in >50% of cells in 23 melanomas (19%), between 11 and 50% cells in 15 (12.5%), <11% cells in 16 (13.5%), and negative in 66 (55%). Although specific for both antigens, the PCR methods did not provide this information about microheterogeneity. Polymorphisms in the LAGE-1 gene resulted in false negative LAGE-1 typing by qRT-PCR by inhibiting binding of oligonucleotide primers, thereby showing the exquisite specificity of qRT-PCR as a typing method. CONCLUSIONS For NY-ESO-1 typing, immunohistochemistry compared favorably with the RT-PCR, with the added advantage of being able to characterize heterogeneity of antigen expression. Because neither mAb bound LAGE and because there was no coordinate expression LAGE and NY-ESO-1, separate typing for each is required.
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44
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Sigalotti L, Fratta E, Coral S, Tanzarella S, Danielli R, Colizzi F, Fonsatti E, Traversari C, Altomonte M, Maio M. Intratumor Heterogeneity of Cancer/Testis Antigens Expression in Human Cutaneous Melanoma Is Methylation-Regulated and Functionally Reverted by 5-Aza-2′-deoxycytidine. Cancer Res 2004; 64:9167-71. [PMID: 15604288 DOI: 10.1158/0008-5472.can-04-1442] [Citation(s) in RCA: 155] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Cancer/testis antigens (CTA) are suitable targets for immunotherapy of human malignancies, and clinical trials are mainly focusing on MAGE-A3. However, the heterogeneous intratumor expression of CTA may hamper the effectiveness of CTA-directed vaccination through the emergence of CTA-negative neoplastic clones. We investigated the intratumor heterogeneity of CTA in human melanoma and the underlying molecular mechanism(s) at clonal level using 14 single cell clones generated from the melanoma lesion Mel 313. Reverse transcription-PCR revealed a highly heterogeneous expression of MAGE-A1, -A2, -A3, -A4, -A6, GAGE 1-6, SSX 1-5, and PRAME among melanoma clones. Only nine clones expressed MAGE-A3 and competitive reverse transcription-PCR identified relative differences in the number of mRNA molecules of up to 130-fold between clones 5 and 14. This clonal heterogeneity of MAGE-A3 expression correlated with the methylation status of specific CpG dinucleotides in MAGE-A3 promoter: i.e., hypomethylated CpG dinucleotides at positions -321, -151, -19, -16, -5, -2, +21, and +42 were found in clones expressing high but not low levels of MAGE-A3. Supporting the role of DNA methylation in generating the intratumor heterogeneity of CTA, the DNA hypomethylating agent 5-aza-2'-deoxycytidine (5-AZA-dCyd) invariably induced their expression in all CTA-negative clones. Furthermore, 5-AZA-dCyd-treatment reduced to 6 folds the differential expression of MAGE-A3 between clones 5 and 14, which became recognized to a similar extent by T cells specific for a MAGE-A-encoded peptide. These findings identify promoter methylation as directly responsible for the intratumoral heterogeneity of therapeutic CTA in melanoma and foresee the use of 5-AZA-dCyd to overcome the limitations set by their intratumor heterogeneous expression to CTA-based vaccine therapy.
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Affiliation(s)
- Luca Sigalotti
- Cancer Bioimmunotherapy Unit, Department of Medical Oncology, Centro di Riferimento Oncologico, Istituto di Ricovero e Cura a Carattere Scientifico, Aviano, Italy
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45
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Maraskovsky E, Sjölander S, Drane DP, Schnurr M, Le TTT, Mateo L, Luft T, Masterman KA, Tai TY, Chen Q, Green S, Sjölander A, Pearse MJ, Lemonnier FA, Chen W, Cebon J, Suhrbier A. NY-ESO-1 protein formulated in ISCOMATRIX adjuvant is a potent anticancer vaccine inducing both humoral and CD8+ t-cell-mediated immunity and protection against NY-ESO-1+ tumors. Clin Cancer Res 2004; 10:2879-90. [PMID: 15102697 DOI: 10.1158/1078-0432.ccr-03-0245] [Citation(s) in RCA: 76] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
NY-ESO-1 is a 180 amino-acid human tumor antigen expressed by many different tumor types and belongs to the family of "cancer-testis" antigens. In humans, NY-ESO-1 is one of the most immunogenic tumor antigens and NY-ESO-1 peptides have been shown to induce NY-ESO-1-specific CD8(+) CTLs capable of altering the natural course of NY-ESO-1-expressing tumors in cancer patients. Here we describe the preclinical immunogenicity and efficacy of NY-ESO-1 protein formulated with the ISCOMATRIX adjuvant (NY-ESO-1 vaccine). In vitro, the NY-ESO-1 vaccine was readily taken up by human monocyte-derived dendritic cells, and on maturation, these human monocyte-derived dendritic cells efficiently cross-presented HLA-A2-restricted epitopes to NY-ESO-1-specific CD8(+) T cells. In addition, epitopes of NY-ESO-1 protein were also presented on MHC class II molecules to NY-ESO-1-specific CD4(+) T cells. The NY-ESO-1 vaccine induced strong NY-ESO-1-specific IFN-gamma and IgG2a responses in C57BL/6 mice. Furthermore, the NY-ESO-1 vaccine induced NY-ESO-1-specific CD8(+) CTLs in HLA-A2 transgenic mice that were capable of lysing human HLA-A2(+) NY-ESO-1(+) tumor cells. Finally, C57BL/6 mice, immunized with the NY-ESO-1 vaccine, were protected against challenge with a B16 melanoma cell line expressing NY-ESO-1. These data illustrate that the NY-ESO-1 vaccine represents a potent therapeutic anticancer vaccine.
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MESH Headings
- Adjuvants, Immunologic
- Animals
- Antigens, Neoplasm/chemistry
- Antineoplastic Agents/pharmacology
- CD4 Antigens/biosynthesis
- CD8-Positive T-Lymphocytes/immunology
- CD8-Positive T-Lymphocytes/metabolism
- Cancer Vaccines
- Cell Line, Tumor
- Disease Progression
- Dose-Response Relationship, Drug
- Enzyme-Linked Immunosorbent Assay
- Epitopes/chemistry
- Escherichia coli/metabolism
- HLA-A2 Antigen/chemistry
- Immunity, Cellular
- Immunoglobulin G/chemistry
- Immunohistochemistry
- Melanoma, Experimental
- Membrane Proteins/chemistry
- Mice
- Mice, Inbred BALB C
- Mice, Inbred C57BL
- Mice, Transgenic
- Monocytes/metabolism
- Peptides/chemistry
- Phenotype
- Plasmids/metabolism
- RNA, Messenger/metabolism
- Recombinant Proteins/chemistry
- Reverse Transcriptase Polymerase Chain Reaction
- Time Factors
- Transfection
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Affiliation(s)
- Eugene Maraskovsky
- Ludwig Institute for Cancer Research, Austin and Repatriation Medical Centre, Melbourne, Victoria, Australia.
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46
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Abstract
Melanoma incidence is rising worldwide. Early diagnosis is very important, as the most effective treatment for melanoma still consists of excision of the tumour before onset of the metastatic growth phase. Immunohistochemistry is a valuable tool for (dermato)pathologists to aid establishing diagnosis. Melanoma markers can be classified into two main categories: melanocytic differentiation markers and melanoma progression markers. Melanocytic differentiation markers are mostly used to distinguish poorly differentiated melanomas from non-melanocytic tumours and for staging of melanocytic proliferative lesions. Melanoma progression markers are most suitable to determine the level of malignancy and/or aggressiveness of tumour cells. This review describes the classification of melanoma markers, including commonly used and recently identified antigens with potential marker function. We characterize their expression profile in melanocytic proliferative lesions and their potential usefulness for diagnosis, prognosis, microstaging, immunotherapeutic purposes and evaluation of therapies.
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Affiliation(s)
- N J W de Wit
- Department of Pathology, University Medical Centre St Radboud, Nijmegen, The Netherlands.
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47
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Fosså A, Berner A, Fosså SD, Hernes E, Gaudernack G, Smeland EB. NY-ESO-1 protein expression and humoral immune responses in prostate cancer. Prostate 2004; 59:440-7. [PMID: 15065093 DOI: 10.1002/pros.20025] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
BACKGROUND Due to restricted expression in normal tissues cancer/testis (C/T) antigens represent candidate molecules for immunotherapy of cancer. NY-ESO-1 is a well-studied C/T antigen with unknown expression and immunogenicity in prostate cancer (PC) patients. METHODS NY-ESO-1 expression was determined by immunohistochemistry and humoral immune responses against NY-ESO-1 assessed by enzyme-linked immuno-sorbent assay (ELISA) and Western blotting. Protein expression and serological responses were correlated with clinical findings and survival. RESULTS NY-ESO-1 expression was found in biopsies from 2 of 66 localized PC and 7/48 hormone refractory prostate cancer (HRPC) patients, respectively. Anti-NY-ESO-1 antibodies were detected in sera from 1 of 112 localized PC and 18 of 95 HRPC patients. Two of four HRPC patients with NY-ESO-1 positive biopsies had mounted a serological response. Positive anti-NY-ESO-1 titers were correlated with poor survival in HRPC patients. CONCLUSIONS NY-ESO-1 is expressed in a subset of HRPC patients and, together with other C/T antigens, may serve as a target antigen for development of immunotherapy of PC. Spontaneous serological responses against NY-ESO-1 may be associated with poor survival.
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Affiliation(s)
- Alexander Fosså
- Department of Immunology, The Norwegian Radium Hospital, Montebello, Oslo, Norway.
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48
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Batchu RB, Moreno AM, Szmania S, Gupta SK, Zhan F, Rosen N, Kozlowski M, Spencer T, Spagnoli GC, Shaughnessy J, Barlogie B, Tricot G, van Rhee F. High-level expression of cancer/testis antigen NY-ESO-1 and human granulocyte-macrophage colony-stimulating factor in dendritic cells with a bicistronic retroviral vector. Hum Gene Ther 2004; 14:1333-45. [PMID: 14503968 DOI: 10.1089/104303403322319417] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Tumor-specific genes delivered to dendritic cells (DCs) have been used for the generation of cytotoxic T cells (CTLs), but their application has been limited on the one hand by low viral titers resulting in low transduction efficiency and poor protein production, and on the other hand by immunogenicity of the selectable marker and poor viability of the DCs. We addressed these limitations by creating a multipurpose master vector (pMV) and cloning the tumor gene NY-ESO-1, which is highly expressed in more than 50% of advanced myeloma patients. pMV was constructed from a Moloney murine leukemia virus (Mo-MuLV)-based retroviral backbone with the following features: (1) an extended packaging signal to achieve high viral titers, (2) a splice acceptor region to facilitate protein production, (3) a nonimmunogenic selectable marker, dihydrofolate reductase-L22Y (DHFR(L22Y)), to exclude the generation of CTLs against the selectable marker, (4) an internal ribosomal entry site between the tumor-specific gene (NY-ESO-1) and the selectable marker DHFR(L22Y) for coexpression of two heterologous gene products from a single bicistronic mRNA, minimizing the possibility of differential expression of these two genes, and (5) human granulocyte-macrophage colony-stimulating factor (hGM-CSF) cDNA driven by the human T-lymphotropic virus promoter to enhance DC function and viability. Recombinant virus of pMV-NY-ESO-1 was generated with vesicular stomatitis virus G envelope protein (VSV-G) in the GP2-293 cell line for efficient transduction. We present evidence that the DC phenotype is unaltered after transduction and that more than 85% of DCs express NY-ESO-1, which secrete approximately 40 ng of GM-CSF per 10(6) DCs.
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Affiliation(s)
- R B Batchu
- Myeloma Institute for Research and Therapy, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
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49
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Fosså A, Alsøe L, Crameri R, Funderud S, Gaudernack G, Smeland EB. Serological cloning of cancer/testis antigens expressed in prostate cancer using cDNA phage surface display. Cancer Immunol Immunother 2004; 53:431-8. [PMID: 14747957 PMCID: PMC11032770 DOI: 10.1007/s00262-003-0458-8] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2003] [Accepted: 09/09/2003] [Indexed: 10/26/2022]
Abstract
Serological cloning of tumor-associated antigens (TAAs) using patient autoantibodies and tumor cDNA expression libraries (SEREX) has identified a wide array of tumor proteins eliciting B-cell responses in patients. However, alternative cloning strategies with the possibility of high throughput analysis of patient sera and tumor libraries may be of interest. We explored the pJuFo phage surface display system, allowing display of recombinant tumor proteins on the surface of M13 filamentous phage, for cloning of TAAs in prostate cancer (PC). Control experiments established that after a few rounds of selection on immobilized specific IgG, a high degree of enrichment of seroreactive clones was achieved. With an increasing number of selection rounds, a higher yield of positive clones was offset by an apparent loss of diversity in the repertoire of selected clones. Using autologous patient serum IgG in a combined biopanning and immunoscreening approach, we identified 13 different TAAs. Three of these (NY-ESO-1, Lage-1, and Xage-1) were known members of the cancer/testis family of TAAs, and one other protein had previously been isolated by SEREX in cancer types other than PC. Specific IgG responses against NY-ESO-1 were found in sera from 4/20 patients with hormone refractory PC, against Lage-1 in 3/20, and Xage-1 in 1/20. No reactivity against the remaining proteins was detected in other PC patients, and none of the TAAs reacted with serum from healthy subjects. The results demonstrate that phage surface display combined with postselection immunoscreening is suitable for cloning a diverse repertoire of TAAs from tumor tissue cDNA libraries. Furthermore, candidate TAAs for vaccine development of PC were identified.
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Affiliation(s)
- Alexander Fosså
- Department of Immunology, Norwegian Radium Hospital, Montebello, 0310 Oslo, Norway.
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Westbrook VA, Schoppee PD, Diekman AB, Klotz KL, Allietta M, Hogan KT, Slingluff CL, Patterson JW, Frierson HF, Irvin WP, Flickinger CJ, Coppola MA, Herr JC. Genomic Organization, Incidence, and Localization of the SPAN-X Family of Cancer-Testis Antigens in Melanoma Tumors and Cell Lines. Clin Cancer Res 2004; 10:101-12. [PMID: 14734458 DOI: 10.1158/1078-0432.ccr-0647-3] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
PURPOSE Members of the SPAN-X (sperm protein associated with the nucleus mapped to the X chromosome) family of cancer-testis antigens are promising targets for tumor immunotherapy because they are normally expressed exclusively during spermiogenesis on the adluminal side of the blood-testis barrier, an immune privileged compartment. EXPERIMENTAL DESIGN AND RESULTS This study analyzed the human SPANX genomic organization, as well as SPAN-X mRNA and protein expression in somatic and cancer cells. The SPANX family consists of five genes, one of which is duplicated, all located in a gene cluster at Xq27.1. From the centromere, the arrangement of the five SPANX genes mapped on one contiguous sequence is SPANXB, -C, -A1, -A2, and -D. Reverse transcription-PCR analyses demonstrated expression of SPAN-X mRNA in melanoma and ovarian cell lines, and virtual Northern analysis established SPANX gene expression in numerous cancer cell lines. Immunoblot analysis using polyclonal antisera raised against recombinant SPAN-X confirmed the translation of SPAN-X proteins in melanoma and ovarian tumor cell lines. The immunoreactive proteins migrated between M(r) 15,000 and M(r) 20,000 similar to those observed in spermatozoa. Immunoperoxidase labeling of melanoma cells and tissue sections demonstrated SPAN-X protein localization in the nucleus, cytoplasm, or both. Ultrastructurally, in melanoma cells with nuclear SPAN-X, the protein was associated with the nuclear envelope, a localization similar to that observed in human spermatids and spermatozoa. Significantly, the incidence of SPAN-X-positive immunostaining was greatest in the more aggressive skin tumors, particularly in distant, nonlymphatic metastatic melanomas. CONCLUSIONS The data herein suggest that the SPAN-X protein may be a useful target in cancer immunotherapy.
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Affiliation(s)
- V Anne Westbrook
- Department of Cell Biology, Center for Research in Contraceptive and Reproductive Health, University of Virginia, Charlottesville, Virginia, USA
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