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Anastasio MK, Shuey S, Davidson BA. Antibody-Drug Conjugates in Gynecologic Cancers. Curr Treat Options Oncol 2024; 25:1-19. [PMID: 38172449 DOI: 10.1007/s11864-023-01166-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/13/2023] [Indexed: 01/05/2024]
Abstract
OPINION STATEMENT Antibody-drug conjugates (ADCs) are a novel class of targeted cancer therapies with the ability to selectively deliver a cytotoxic drug to a tumor cell using a monoclonal antibody linked to a cytotoxic payload. The technology of ADCs allows for tumor-specificity, improved efficacy, and decreased toxicity compared to standard chemotherapy. Common toxicities associated with ADC use include ocular, pulmonary, hematologic, and neurologic toxicities. Several ADCs have been approved by the United States Food and Drug Administration (FDA) for the management of patients with recurrent or metastatic gynecologic cancers, a population with poor outcomes and limited effective treatment options. The first FDA-approved ADC for recurrent or metastatic cervical cancer was tisotumab vedotin, a tissue factor-targeting agent, after demonstrating response in the innovaTV 204 trial. Mirvetuximab soravtansine targets folate receptor alpha and is approved for use in patients with folate receptor alpha-positive, platinum-resistant, epithelial ovarian cancer based on results from the SORAYA trial. While there are no FDA-approved ADCs for the treatment of uterine cancer, trastuzumab deruxtecan, an anti-human epidermal growth factor receptor 2 (HER2) agent, is actively being investigated. In this review, we will describe the structure and mechanism of action of ADCs, discuss their toxicity profiles, review ADCs both approved and under investigation for the management of gynecologic cancers, and discuss mechanisms of ADC resistance.
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Affiliation(s)
- Mary Katherine Anastasio
- Department of Obstetrics and Gynecology, Division of Gynecologic Oncology, Duke University Medical Center, Durham, NC, 27705, USA.
| | - Stephanie Shuey
- Department of Pharmacy, Duke University Medical Center, Durham, NC, USA
| | - Brittany A Davidson
- Department of Obstetrics and Gynecology, Division of Gynecologic Oncology, Duke University Medical Center, Durham, NC, 27705, USA
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Koltai T, Fliegel L. The Relationship between Trop-2, Chemotherapeutic Drugs, and Chemoresistance. Int J Mol Sci 2023; 25:87. [PMID: 38203255 PMCID: PMC10779383 DOI: 10.3390/ijms25010087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Revised: 12/08/2023] [Accepted: 12/17/2023] [Indexed: 01/12/2024] Open
Abstract
Trop-2 is a highly conserved one-pass transmembrane mammalian glycoprotein that is normally expressed in tissues such as the lung, intestines, and kidney during embryonic development. It is overexpressed in many epithelial cancers but is absent in non-epithelial tumors. Trop-2 is an intracellular calcium signal transducer that participates in the promotion of cell proliferation, migration, invasion, metastasis, and probably stemness. It also has some tumor suppressor effects. The pro-tumoral actions have been thoroughly investigated and reported. However, Trop-2's activity in chemoresistance is less well known. We review a possible relationship between Trop-2, chemotherapy, and chemoresistance. We conclude that there is a clear role for Trop-2 in some specific chemoresistance events. On the other hand, there is no clear evidence for its participation in multidrug resistance through direct drug transport. The development of antibody conjugate drugs (ACD) centered on anti-Trop-2 monoclonal antibodies opened the gates for the treatment of some tumors resistant to classic chemotherapies. Advanced urothelial tumors and breast cancer were among the first malignancies for which these ACDs have been employed. However, there is a wide group of other tumors that may benefit from anti-Trop-2 therapy as soon as clinical trials are completed.
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Affiliation(s)
- Tomas Koltai
- Hospital del Centro Gallego de Buenos Aires, Buenos Aires 2199, Argentina;
| | - Larry Fliegel
- Department of Biochemistry, Faculty of Medicine, University of Alberta, 347 Medical Science Bldg., Edmonton, AB T6G 2H7, Canada
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McNamara B, Chang Y, Goreshnik A, Santin AD. Value of Antibody Drug Conjugates for Gynecological Cancers: A Modern Appraisal Following Recent FDA Approvals. Int J Womens Health 2023; 15:1353-1365. [PMID: 37663226 PMCID: PMC10474218 DOI: 10.2147/ijwh.s400537] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Accepted: 08/09/2023] [Indexed: 09/05/2023] Open
Abstract
Antibody drug conjugates (ADCs) are a new class of targeted anti-cancer therapies that combine a monoclonal tumor surface receptor-targeting antibody with a highly cytotoxic molecule payload. They enable delivery of cytotoxic therapy more directly to tumor cells and minimize delivery to healthy tissues. This review summarizes the existing literature about ADC therapies approved for use in gynecologic malignancies, relevant preclinical studies, as well as ongoing clinical trials.
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Affiliation(s)
- Blair McNamara
- Department of Obstetrics, Gynecology, and Reproductive Sciences Yale University School of Medicine, New Haven, CT, 06520, USA
| | - Yifan Chang
- Department of Obstetrics, Gynecology, and Reproductive Sciences Yale University School of Medicine, New Haven, CT, 06520, USA
| | - Ashley Goreshnik
- Department of Obstetrics, Gynecology, and Reproductive Sciences Yale University School of Medicine, New Haven, CT, 06520, USA
| | - Alessandro D Santin
- Department of Obstetrics, Gynecology, and Reproductive Sciences Yale University School of Medicine, New Haven, CT, 06520, USA
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Takeuchi H, Miyamoto T, Fuseya C, Asaka R, Ida K, Ono M, Tanaka Y, Shinagawa M, Ando H, Asaka S, Shiozawa T. PIM1 is a Poor Prognostic Factor for and Potential Therapeutic Target in Serous Carcinoma of the Endometrium. Int J Gynecol Pathol 2023; 42:282-292. [PMID: 35443252 DOI: 10.1097/pgp.0000000000000882] [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: 11/26/2022]
Abstract
Serous carcinoma (SC) is an aggressive histologic type of endometrial carcinoma (EMC) with a poor prognosis. The development of novel therapeutics for SC is an important issue. PIM1 is a serine/threonine kinase involved in various cellular functions, such as cell cycle progression, apoptosis, and transcriptional activation via the phosphorylation of many target proteins, including MYC. PIM1 is overexpressed in several cancers and has been associated with treatment-resistance. We investigated the expression and function of PIM1 in EMC, particularly SC. Immunohistochemical analysis in 133 EMC cases [103 endometrioid carcinomas (EC) and 30 SC] revealed the significantly stronger expression of PIM1 in SC than in EC and significantly shorter survival of patients with overexpression of PIM1 in all EMC cases, as well as in only SC cases. A multivariate analysis identified overexpression of PIM1 as an independent prognostic factor. The knockdown of PIM1 by siRNA in the SC cell line, ARK1, decreased the expression of phosphorylated MYC and reduced proliferation, migration, and invasion. The PIM1 inhibitor, SGI-1776, reduced cell viability in SC cell lines (ARK1, ARK2, and SPAC1L) with IC50 between 1 and 5 µM. SGI-1776 also reduced the migration and invasion of ARK1 cells. Moreover, the oral administration of SGI-1776 significantly suppressed subcutaneous ARK1 xenograft tumor growth in nude mice without impairing health. These results indicate that PIM1 is involved in the acquisition of aggressiveness and suggest the potential of PIM1 as a novel therapeutic target and SGI-1776 as a therapeutic agent for SC.
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Wen Y, Ouyang D, Zou Q, Chen Q, Luo N, He H, Anwar M, Yi W. A literature review of the promising future of TROP2: a potential drug therapy target. ANNALS OF TRANSLATIONAL MEDICINE 2022; 10:1403. [PMID: 36660684 PMCID: PMC9843409 DOI: 10.21037/atm-22-5976] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Accepted: 12/19/2022] [Indexed: 12/29/2022]
Abstract
Background and Objective Previous studies have demonstrated that the oncogene trophoblast cell surface antigen 2 (TROP2) has great application prospects as a therapeutic target. However, few literature reviews have systematically summarized and evaluated its role in cancer therapy. This study aims to summarize the molecular structure, functions, signal transduction pathways, and prognostic value of TROP2, and explore therapeutic agents that target TROP2. Methods A total of 1,376 published literatures from PubMed and 614 published literatures from EMBASE were retrieved by searching "TROP2" or "Trophoblast cell surface antigen 2". The search was conducted on December 12, 2020, and updated on November 20, 2022. The cBioportal and GEPIA (Gene Expression Profiling Interactive Analysis) databases were used to analyze the expression, mutation, and prognostic value of TROP2 in different types of cancer. Key Content and Findings TROP2 is overexpressed in different tumor tissues and plays roles in cell proliferation, invasion, migration, apoptosis, and treatment resistance by binding to or interacting with several molecules. As a therapeutic target, TROP2 is particularly suitable for antibody-based therapies. Monoclonal antibodies, bispecific antibodies, antibody-drug conjugates (ADCs), virus-like particles, and antibody drugs in combination with traditional chemotherapy, immunotherapy, radioimmunotherapy, photoimmunotherapy, and nanoparticles that target TROP2 have thus far been rapidly developed. For example, sacituzumab govitecan (IMMU-132), a TROP2-targeting ADC, was granted accelerated approval for the treatment of metastatic triple-negative breast cancer (TNBC). Anti-TROP2 antibody-conjugated nanoparticles (ST-NPs) are a promising vehicle for delivering doxorubicin in targeted TNBC therapy. Conclusions The availability of TROP2-targeting ADCs makes TROP2 an accessible and promising therapeutic target for advanced metastatic cancers. The present review describes the important role of TROP2 in tumorigenesis and its potential applications as a promising biomarker and therapeutic target that is capable of reversing resistance.
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Affiliation(s)
- Ying Wen
- Department of General Surgery, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Dengjie Ouyang
- Department of General Surgery, Xiangya Hospital, Central South University, Changsha, China
| | - Qiongyan Zou
- Department of General Surgery, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Qitong Chen
- Department of General Surgery, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Na Luo
- Department of General Surgery, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Hongye He
- Department of General Surgery, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Munawar Anwar
- Department of General Surgery, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Wenjun Yi
- Department of General Surgery, The Second Xiangya Hospital, Central South University, Changsha, China
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Zang Y, Li H, Liu S, Zhao R, Zhang K, Zang Y, Wang Y, Xue F. The roles and clinical applications of interleukins in endometrial carcinoma. Front Oncol 2022; 12:1001693. [PMID: 36531027 PMCID: PMC9748080 DOI: 10.3389/fonc.2022.1001693] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Accepted: 11/02/2022] [Indexed: 08/05/2023] Open
Abstract
As a common malignant tumor of the female reproductive system, endometrial carcinoma (EC) seriously endangers women's health with an increasing incidence. The oncogenesis and progression of cancer are closely linked with immune microenvironment, of which interleukins are the important components. In order to illustrate the roles and clinical applications of interleukins in EC, literature of interleukins and EC were reviewed. Based on the present studies, interleukins play crucial roles in the oncogenesis and development of EC via regulating the proliferation, migration, invasion, angiogenesis, apoptosis, pyroptosis and autophagy of EC as well as the immune function against EC. And some of the interleukins seems to have prospective clinical applications in EC, such as evaluating the risk of tumorigenesis, discriminating the malignancy from benign disorders or normal condition, indicating cancer aggressiveness, predicting the prognosis of patients and serving as the novel therapy. However, there is still a long way to go before the clinical applications of interleukins in EC come into reality. Nevertheless, it is certain that the exploration of interleukins will definitely be of great benefit to the screening, diagnosis and treatment of EC in the future.
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Affiliation(s)
- Yuqin Zang
- Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin, China
- Tianjin Key Laboratory of Female Reproductive Health and Eugenics, Tianjin Medical University General Hospital, Tianjin, China
| | - Huanrong Li
- Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin, China
- Tianjin Key Laboratory of Female Reproductive Health and Eugenics, Tianjin Medical University General Hospital, Tianjin, China
| | - Shiqi Liu
- Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin, China
- Tianjin Key Laboratory of Female Reproductive Health and Eugenics, Tianjin Medical University General Hospital, Tianjin, China
| | - Ruqian Zhao
- Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin, China
- Tianjin Key Laboratory of Female Reproductive Health and Eugenics, Tianjin Medical University General Hospital, Tianjin, China
| | - Kaiwen Zhang
- Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin, China
- Tianjin Key Laboratory of Female Reproductive Health and Eugenics, Tianjin Medical University General Hospital, Tianjin, China
| | - Yuqi Zang
- Hangzhou College of Preschool Teacher Education, Zhejiang Normal University, Hangzhou, China
| | - Yingmei Wang
- Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin, China
- Tianjin Key Laboratory of Female Reproductive Health and Eugenics, Tianjin Medical University General Hospital, Tianjin, China
| | - Fengxia Xue
- Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin, China
- Tianjin Key Laboratory of Female Reproductive Health and Eugenics, Tianjin Medical University General Hospital, Tianjin, China
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Wu Q, Qian W, Sun X, Jiang S. Small-molecule inhibitors, immune checkpoint inhibitors, and more: FDA-approved novel therapeutic drugs for solid tumors from 1991 to 2021. J Hematol Oncol 2022; 15:143. [PMID: 36209184 PMCID: PMC9548212 DOI: 10.1186/s13045-022-01362-9] [Citation(s) in RCA: 72] [Impact Index Per Article: 36.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 10/02/2022] [Indexed: 11/10/2022] Open
Abstract
The United States Food and Drug Administration (US FDA) has always been a forerunner in drug evaluation and supervision. Over the past 31 years, 1050 drugs (excluding vaccines, cell-based therapies, and gene therapy products) have been approved as new molecular entities (NMEs) or biologics license applications (BLAs). A total of 228 of these 1050 drugs were identified as cancer therapeutics or cancer-related drugs, and 120 of them were classified as therapeutic drugs for solid tumors according to their initial indications. These drugs have evolved from small molecules with broad-spectrum antitumor properties in the early stage to monoclonal antibodies (mAbs) and antibody‒drug conjugates (ADCs) with a more precise targeting effect during the most recent decade. These drugs have extended indications for other malignancies, constituting a cancer treatment system for monotherapy or combined therapy. However, the available targets are still mainly limited to receptor tyrosine kinases (RTKs), restricting the development of antitumor drugs. In this review, these 120 drugs are summarized and classified according to the initial indications, characteristics, or functions. Additionally, RTK-targeted therapies and immune checkpoint-based immunotherapies are also discussed. Our analysis of existing challenges and potential opportunities in drug development may advance solid tumor treatment in the future.
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Affiliation(s)
- Qing Wu
- School of Medical Imaging, Hangzhou Medical College, Hangzhou, 310053 Zhejiang China
| | - Wei Qian
- Department of Radiology, School of Medicine, The Second Affiliated Hospital, Zhejiang University, Hangzhou, 310009 Zhejiang China
| | - Xiaoli Sun
- Department of Radiation Oncology, School of Medicine, The First Affiliated Hospital, Zhejiang University, Hangzhou, 310003 Zhejiang China
| | - Shaojie Jiang
- School of Medical Imaging, Hangzhou Medical College, Hangzhou, 310053 Zhejiang China
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Liao S, Wang B, Zeng R, Bao H, Chen X, Dixit R, Xing X. Recent advances in trophoblast cell-surface antigen 2 targeted therapy for solid tumors. Drug Dev Res 2021; 82:1096-1110. [PMID: 34462935 DOI: 10.1002/ddr.21870] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 04/27/2021] [Accepted: 05/02/2021] [Indexed: 12/27/2022]
Abstract
Trophoblast cell-surface antigen 2 (Trop 2) is a transmembrane glycoprotein that is highly expressed in various cancer types with relatively low or no baseline expression in most normal tissues. Its overexpression is associated with tumor growth and poor prognosis; Trop 2 is, therefore, an ideal therapeutic target for epithelial cancers. Several Trop 2 targeted therapeutics have recently been developed for the treatment of cancers, such as anti-Trop 2 antibodies and antibody-drug conjugates (ADCs), as well as Trop 2-specific cell therapy. In particular, the safety and clinical benefit of Trop 2-based ADCs have been demonstrated in clinical trials across multiple tumor types, including those with limited treatment options, such as triple-negative breast cancer, platinum-resistant urothelial cancer, and heavily pretreated non-small cell lung cancer. In this review, we elaborate on recent advances in Trop 2 targeted modalities and provide an overview of novel insights for future developments in this field.
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Affiliation(s)
- Shutan Liao
- Department of Consultation, Amador Bioscience Ltd, Hangzhou, China
| | - Bing Wang
- Department of Consultation, Amador Bioscience Ltd, Hangzhou, China
| | - Rong Zeng
- Department of Consultation, Amador Bioscience Ltd, Hangzhou, China
| | - Haifeng Bao
- Department of Consultation, Amador Bioscience Ltd, Hangzhou, China
| | - Xiaomin Chen
- Department of Consultation, Amador Bioscience Ltd, Hangzhou, China
| | - Rakesh Dixit
- Department of Consultation, Bionavigen LLC, Gaithersburg, Maryland, USA
| | - Xiaoyan Xing
- Department of Consultation, Amador Bioscience Ltd, Hangzhou, China
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Celik SY, Çelik Öİ. Can TROP2 be used as a prognostic marker in endometrioid endometrial carcinoma? INDIAN J PATHOL MICR 2021; 63:418-422. [PMID: 32769331 DOI: 10.4103/ijpm.ijpm_783_19] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Background Endometrioid-type endometrial carcinoma is the most common malignancy of the female genital tract in developed countries. The prognosis greatly depends on the grade and stage of the disease. Aims In some patients, the disease recurs in a short time after the surgical/medical therapy. Hence, it is important to predict the patients who will have worse prognosis at the beginning, to choose the appropriate treatment; resuming the search of new prognostic markers. Therefore, our study aimed to detect trophoblast cell surface antigen 2 (TROP2) as a new prognostic marker. Settings and Design The patients who underwent a hysterectomy and diagnosed with endometrioid-type endometrial carcinoma were evaluated retrospectively and TROP2 immunostain was performed to their tumoral slides. Materials and Methods We evaluated TROP2 expressions in 102 patients immunohistochemically who underwent hysterectomy with the diagnosis of endometrioid-type endometrial carcinoma histopathologically and correlated them with the other generally accepted prognostic parameters. Statistical Analysis The Kolmogorov-Smirnov test and Q-Q plot test were used to verify the normality of the distribution of continuous variables. The Chi-square/Fisher's exact tests were used for categorical variables. Analyses were performed with SPSS Statistics for Windows, Version 20. Results High overexpression of TROP2 was seen in larger, higher-grade, deeper-invasive tumors, tumors with vascular invasion, and pelvic-lymph-node metastasis. These results were statistically significant (P ≤ 0.05). Conclusion Overexpression of TROP2 in endometrioid-type endometrial carcinoma seems to be a poor prognostic factor; it may be useful in determining the biologically more aggressive tumors before the treatment. This early determination is very important to choose the appropriate surgery, adjuvant-treatments, and follow-up.
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Affiliation(s)
- Serkan Y Celik
- Department of Pathology, Faculty of Medicine, Sıtkı Kocman University, Muğla, Turkey
| | - Özgür İlhan Çelik
- Department of Pathology, Faculty of Medicine, Sıtkı Kocman University, Muğla, Turkey
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Lenárt S, Lenárt P, Šmarda J, Remšík J, Souček K, Beneš P. Trop2: Jack of All Trades, Master of None. Cancers (Basel) 2020; 12:E3328. [PMID: 33187148 PMCID: PMC7696911 DOI: 10.3390/cancers12113328] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 11/04/2020] [Accepted: 11/09/2020] [Indexed: 12/20/2022] Open
Abstract
Trophoblast cell surface antigen 2 (Trop2) is a widely expressed glycoprotein and an epithelial cell adhesion molecule (EpCAM) family member. Although initially identified as a transmembrane protein, other subcellular localizations and processed forms were described. Its congenital mutations cause a gelatinous drop-like corneal dystrophy, a disease characterized by loss of barrier function in corneal epithelial cells. Trop2 is considered a stem cell marker and its expression associates with regenerative capacity in various tissues. Trop2 overexpression was described in tumors of different origins; however, functional studies revealed both oncogenic and tumor suppressor roles. Nevertheless, therapeutic potential of Trop2 was recognized and clinical studies with drug-antibody conjugates have been initiated in various cancer types. One of these agents, sacituzumab govitecan, has been recently granted an accelerated approval for therapy of metastatic triple-negative breast cancer. In this article, we review the current knowledge about the yet controversial function of Trop2 in homeostasis and pathology.
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Affiliation(s)
- Sára Lenárt
- Department of Experimental Biology, Faculty of Science, Masaryk University, 625 00 Brno, Czech Republic; (S.L.); (P.L.); (J.Š.); (K.S.)
| | - Peter Lenárt
- Department of Experimental Biology, Faculty of Science, Masaryk University, 625 00 Brno, Czech Republic; (S.L.); (P.L.); (J.Š.); (K.S.)
- Research Centre for Toxic Compounds in the Environment, Faculty of Science, Masaryk University, 625 00 Brno, Czech Republic
| | - Jan Šmarda
- Department of Experimental Biology, Faculty of Science, Masaryk University, 625 00 Brno, Czech Republic; (S.L.); (P.L.); (J.Š.); (K.S.)
| | - Ján Remšík
- Human Oncology & Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA;
| | - Karel Souček
- Department of Experimental Biology, Faculty of Science, Masaryk University, 625 00 Brno, Czech Republic; (S.L.); (P.L.); (J.Š.); (K.S.)
- Department of Cytokinetics, Institute of Biophysics of the Czech Academy of Sciences, 612 65 Brno, Czech Republic
- Center of Biomolecular and Cellular Engineering, International Clinical Research Center, St. Anne’s University Hospital, 656 91 Brno, Czech Republic
| | - Petr Beneš
- Department of Experimental Biology, Faculty of Science, Masaryk University, 625 00 Brno, Czech Republic; (S.L.); (P.L.); (J.Š.); (K.S.)
- Center of Biomolecular and Cellular Engineering, International Clinical Research Center, St. Anne’s University Hospital, 656 91 Brno, Czech Republic
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Zhan L, Liu X, Zhang J, Cao Y, Wei B. Immune disorder in endometrial cancer: Immunosuppressive microenvironment, mechanisms of immune evasion and immunotherapy. Oncol Lett 2020; 20:2075-2090. [PMID: 32782525 PMCID: PMC7400772 DOI: 10.3892/ol.2020.11774] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Accepted: 05/20/2020] [Indexed: 12/14/2022] Open
Abstract
Immunotherapy is an emerging clinical approach that has gained traction over the past decade as a novel treatment option for lung cancer and melanoma. Notably, researchers have made marked improvements in the treatment of endometrial cancer (EC), and potential immune responses have been identified in patients with EC, thereby offering the possibility of exploring immunotherapy for EC. Nevertheless, various needs remain unmet, and immunotherapy applications in EC have yielded limited success, as only a minority of patients exhibited a clinical response. Therefore, further understanding of immune dysfunction associated with EC is still required. The present review describes recent findings regarding the immunosuppressive microenvironment of EC, with emphasis on immune evasion mechanisms and immunotherapy in EC.
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Affiliation(s)
- Lei Zhan
- Department of Obstetrics and Gynecology, Reproductive Medicine Center, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230022, P.R. China.,Department of Gynecology and Obstetrics, The Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230601, P.R. China
| | - Xiaojing Liu
- Department of Gynecology and Obstetrics, The Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230601, P.R. China
| | - Jing Zhang
- Department of Gynecology and Obstetrics, The Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230601, P.R. China
| | - Yunxia Cao
- Department of Obstetrics and Gynecology, Reproductive Medicine Center, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230022, P.R. China
| | - Bing Wei
- Department of Gynecology and Obstetrics, The Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230601, P.R. China
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Goldenberg DM, Sharkey RM. Sacituzumab govitecan, a novel, third-generation, antibody-drug conjugate (ADC) for cancer therapy. Expert Opin Biol Ther 2020; 20:871-885. [PMID: 32301634 DOI: 10.1080/14712598.2020.1757067] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
INTRODUCTION We describe a new, third-generation of antibody-drug conjugates (ADCs) having a high drug payload against topoisomerase I, important for DNA function, and targeting selective tumor antigens, predominantly TROP-2. AREAS COVERED The historical development of ADCs is reviewed before presenting the current line of improved, third-generation ADCs targeting topoisomerase I, thus affecting DNA and causing double-stranded DNA breaks. Emphasis is given to explaining why sacituzumab govitecan represents a paradigm change in ADCs by achieving a high therapeutic index due to its novel target, TROP-2, an internalizing antigen/antibody, proprietary linker chemistry, and high drug payload, resulting in a high tumor concentration of the drug given in repeated doses with acceptable tolerability, particularly evidencing a lower percentage of 'late' diarrhea than its prodrug, irinotecan. PubMed was used for the primary search conducted. EXPERT OPINION The properties and clinical results of third-generation ADCs, based on sacituzumab govitecan, are discussed, including prospects for future applications, particularly combination therapies with PARP inhibitors and immune checkpoint inhibitors. Since one topoisomerase I ADC has just received regulatory approval for HER2+ breast cancer, and sacituzumab govitecan is under FDA review for accelerated approval in the therapy of triple-negative breast cancer, the prospects for these novel ADCs are discussed.
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Affiliation(s)
| | - Robert M Sharkey
- Center for Molecular Medicine and Immunology , Mendham, New Jersey, USA
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13
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Lopez S, Perrone E, Bellone S, Bonazzoli E, Zeybek B, Han C, Tymon-Rosario J, Altwerger G, Menderes G, Bianchi A, Zammataro L, Manzano A, Manara P, Ratner E, Silasi DA, Huang GS, Azodi M, Schwartz PE, Raspagliesi F, Angioli R, Buza N, Hui P, Bond HM, Santin AD. Preclinical activity of sacituzumab govitecan (IMMU-132) in uterine and ovarian carcinosarcomas. Oncotarget 2020; 11:560-570. [PMID: 32082489 PMCID: PMC7007291 DOI: 10.18632/oncotarget.27342] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Accepted: 10/26/2019] [Indexed: 12/27/2022] Open
Abstract
Background Uterine and ovarian carcinosarcomas (CS) are rare cancers with poor prognosis. Sacituzumab-govitecan (SG) is a new class of antibody-drug-conjugate (ADC) targeting the human-trophoblast-cell-surface marker (Trop-2) conjugated with the active metabolite of irinotecan (SN-38). We evaluated the efficacy of SG against biologically aggressive CS. Methods Trop-2 expression was evaluated in 10 formalin-fixed-paraffined-embedded (FFPE) CS by immunohistochemistry and 9 primary CS cell-lines by flow-cytometry. One Trop-2 low/negative (SARARK14) and two Trop-2 positive (SARARK4, SARARK9) cell-lines were tested in cell-viability assays . The in vivo antitumor activity of SG was tested in xenografts models (ie, SARARK9) with strong Trop-2 expression. Results Strong/diffuse staining was seen in 30% (3/10) of FFPE tumors and 33% (3/9) of primary CS cell lines. Trop-2 positive cell-lines (SARARK4, SARARK9) showed higher sensitivity to SG in vitro when compared to Trop-2 low/negative (SARARK14) cell lines. In xenografts, twice-weekly intravenous administration of SG for three weeks showed a significant tumor growth inhibition when compared to control, to ADC control and to the naked AB (p=0.004, p=0.007 and p=0.0007, respectively). SG significantly improved overall survival at 90 days when compared to control groups (p<0.0001). Conclusion SG may represent a novel class of active drugs for carcinosarcomas patients overexpressing Trop-2.
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Affiliation(s)
- Salvatore Lopez
- Department of Obstetrics, Gynecology and Reproductive Sciences, Yale University School of Medicine, New Haven, CT, USA.,Department of Experimental and Clinical Medicine, Magna Graecia University, Catanzaro, Italy.,Department of Gynecologic Oncology, IRCCS National Cancer Institute, Milan, Italy
| | - Emanuele Perrone
- Department of Obstetrics, Gynecology and Reproductive Sciences, Yale University School of Medicine, New Haven, CT, USA
| | - Stefania Bellone
- Department of Obstetrics, Gynecology and Reproductive Sciences, Yale University School of Medicine, New Haven, CT, USA
| | - Elena Bonazzoli
- Department of Obstetrics, Gynecology and Reproductive Sciences, Yale University School of Medicine, New Haven, CT, USA
| | - Burak Zeybek
- Department of Obstetrics, Gynecology and Reproductive Sciences, Yale University School of Medicine, New Haven, CT, USA
| | - Chanhee Han
- Department of Obstetrics, Gynecology and Reproductive Sciences, Yale University School of Medicine, New Haven, CT, USA
| | - Joan Tymon-Rosario
- Department of Obstetrics, Gynecology and Reproductive Sciences, Yale University School of Medicine, New Haven, CT, USA
| | - Gary Altwerger
- Department of Obstetrics, Gynecology and Reproductive Sciences, Yale University School of Medicine, New Haven, CT, USA
| | - Gulden Menderes
- Department of Obstetrics, Gynecology and Reproductive Sciences, Yale University School of Medicine, New Haven, CT, USA
| | - Anna Bianchi
- Department of Obstetrics, Gynecology and Reproductive Sciences, Yale University School of Medicine, New Haven, CT, USA
| | - Luca Zammataro
- Department of Obstetrics, Gynecology and Reproductive Sciences, Yale University School of Medicine, New Haven, CT, USA
| | - Aranzazu Manzano
- Department of Obstetrics, Gynecology and Reproductive Sciences, Yale University School of Medicine, New Haven, CT, USA
| | - Paola Manara
- Department of Obstetrics, Gynecology and Reproductive Sciences, Yale University School of Medicine, New Haven, CT, USA
| | - Elena Ratner
- Department of Obstetrics, Gynecology and Reproductive Sciences, Yale University School of Medicine, New Haven, CT, USA
| | - Dan-Arin Silasi
- Department of Obstetrics, Gynecology and Reproductive Sciences, Yale University School of Medicine, New Haven, CT, USA
| | - Gloria S Huang
- Department of Obstetrics, Gynecology and Reproductive Sciences, Yale University School of Medicine, New Haven, CT, USA
| | - Masoud Azodi
- Department of Obstetrics, Gynecology and Reproductive Sciences, Yale University School of Medicine, New Haven, CT, USA
| | - Peter E Schwartz
- Department of Obstetrics, Gynecology and Reproductive Sciences, Yale University School of Medicine, New Haven, CT, USA
| | | | - Roberto Angioli
- University Campus Bio Medico of Rome, Department of Obstetrics and Gynecology, Rome, Italy
| | - Natalia Buza
- Department of Pathology, Yale University School of Medicine, New Haven, CT, USA
| | - Pei Hui
- Department of Pathology, Yale University School of Medicine, New Haven, CT, USA
| | - Heather M Bond
- Department of Clinical and Experimental Medicine, Laboratory of Molecular Haematopoiesis and Stem Cell Biology, University "Magna Græcia", Catanzaro, Italy
| | - Alessandro D Santin
- Department of Obstetrics, Gynecology and Reproductive Sciences, Yale University School of Medicine, New Haven, CT, USA
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In vitro and in vivo activity of sacituzumab govitecan, an antibody-drug conjugate targeting trophoblast cell-surface antigen 2 (Trop-2) in uterine serous carcinoma. Gynecol Oncol 2019; 156:430-438. [PMID: 31839338 DOI: 10.1016/j.ygyno.2019.11.018] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Revised: 11/02/2019] [Accepted: 11/10/2019] [Indexed: 12/21/2022]
Abstract
OBJECTIVE Uterine serous carcinoma (USC) is an aggressive variant of endometrial cancer with poor prognosis. Sacituzumab govitecan (SG) is a novel antibody-drug-conjugate (ADC) targeting trophoblast cell-surface antigen 2 (Trop-2), a transmembrane-calcium-signal-transducer, to deliver SN-38, the active metabolite of irinotecan. The objective of this study was to evaluate the expression of Trop-2 in USC and the preclinical activity of SG against primary USC cell-lines and xenografts. METHODS We used immunohistochemistry (IHC) and flow-cytometry-based assays to evaluate Trop-2 expression and cell-viability in USC tissue and primary tumor-cell-lines after exposure to SG, non-targeting control ADC, and naked antibody hRS7-IgG. Antibody-dependent-cell-cytotoxicity (ADCC) against Trop-2+ and Trop-2- USC cell-lines was evaluated in vitro using 4-hr-Chromium-release-assays. In vivo activity of SG was tested against Trop-2+ USC xenografts by intravenous administration of SG, control ADC, and hRS7. RESULTS Trop-2 expression by IHC was detected in 95.1% of USC samples (99/104). Primary tumor cell-lines overexpressing Trop-2 were significantly more sensitive to SG when compared to control ADC (p <0.05). Both SG and hRS7 mediated ADCC in Trop2+ USC cell-lines while no cytotoxicity was detected against Trop-2- cells. SG induced significant bystander killing of Trop-2- tumors when admixed with Trop-2+ tumors. SG caused growth-inhibition and increased survival in SG treated mice harboring Trop-2+ xenografts when compared to controls (p <0.05). CONCLUSIONS SG is remarkably active against USC overexpressing Trop-2 in vitro and in vivo. Our results combined with SG clinical responses recently reported against multiple chemotherapy resistant human tumors further support clinical development of SG in USC patients with advanced/recurrent disease.
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15
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Zeng X, Baba T, Hamanishi J, Matsumura N, Kharma B, Mise Y, Abiko K, Yamaguchi K, Horikawa N, Hunstman DG, Mulati K, Kitamura S, Taki M, Murakami R, Hosoe Y, Mandai M. Phosphorylation of STAT1 serine 727 enhances platinum resistance in uterine serous carcinoma. Int J Cancer 2019; 145:1635-1647. [PMID: 31228268 DOI: 10.1002/ijc.32501] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2018] [Revised: 05/12/2019] [Accepted: 05/24/2019] [Indexed: 11/07/2022]
Abstract
Uterine serous carcinoma (USC) is a highly aggressive histological subtype of endometrial cancers harboring highly metastatic and chemoresistant features. Our previous study showed that STAT1 is highly expressed in USC and acts as a key molecule that is positively correlated with tumor progression, but it remains unclear whether STAT1 is relevant to the malicious chemorefractory nature of USC. In the present study, we investigated the regulatory role of STAT1 toward platinum-cytotoxicity in USC. STAT1 suppression sensitized USC cells to increase cisplatin-mediated apoptosis (p < 0.001). Furthermore, phosphorylation of STAT1 was prominently observed on serine-727 (pSTAT1-Ser727), but not on tyrosine-701, in the nucleus of USC cells treated with cisplatin. Mechanistically, the inhibition of pSTAT1-Ser727 by dominant-negative plasmid elevated cisplatin-mediated apoptosis by increasing intracellular accumulation of cisplatin through upregulation of CTR1 expression. TBB has an inhibitory effect on casein kinase 2 (CK2), which phosphorylate STAT1 at serine residues. Sequential treatment with TBB and cisplatin on USC cells greatly reduced nuclear pSTAT1-Ser727, enhanced intracellular accumulation of cisplatin, and subsequently increased apoptosis. Tumor load was significantly reduced by combination therapy of TBB and cisplatin in in vivo xenograft models (p < 0.001). Our results collectively suggest that pSTAT1-Ser727 may play a key role in platinum resistance as well as tumor progression in USC. Thus, targeting the STAT1 pathway via CK2 inhibitor can be a novel method for attenuating the chemorefractory nature of USC.
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Affiliation(s)
- Xiang Zeng
- Department of Gynecology and Obstetrics, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Tsukasa Baba
- Department of Gynecology and Obstetrics, Kyoto University Graduate School of Medicine, Kyoto, Japan.,Department of Obstetrics and Gynecology, Iwate Medical University School of Medicine, Iwate, Japan
| | - Junzo Hamanishi
- Department of Gynecology and Obstetrics, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Noriomi Matsumura
- Department of Obstetrics and Gynecology, Kindai University Faculty of Medicine, Osaka, Japan
| | - Budiman Kharma
- Department of Gynecology and Obstetrics, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Yuka Mise
- Department of Gynecology and Obstetrics, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Kaoru Abiko
- Department of Gynecology and Obstetrics, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Ken Yamaguchi
- Department of Gynecology and Obstetrics, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Naoki Horikawa
- Department of Gynecology and Obstetrics, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - David G Hunstman
- Department of Pathology and Laboratory Medicine, University of British Columbia, British Columbia Cancer Agency, Vancouver, BC, Canada.,Genetic Pathology Evaluation Centre, Vancouver General Hospital, Vancouver, BC, Canada
| | - Kumuluzi Mulati
- Department of Gynecology and Obstetrics, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Sachiko Kitamura
- Department of Gynecology and Obstetrics, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Mana Taki
- Department of Gynecology and Obstetrics, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Ryusuke Murakami
- Department of Gynecology and Obstetrics, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Yuko Hosoe
- Department of Gynecology and Obstetrics, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Masaki Mandai
- Department of Gynecology and Obstetrics, Kyoto University Graduate School of Medicine, Kyoto, Japan
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16
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Liu J, Yang D, Yin Z, Gao M, Tong H, Su Y, Zhu J, Ye C, Zhang H. A novel human monoclonal Trop2-IgG antibody inhibits ovarian cancer growth in vitro and in vivo. Biochem Biophys Res Commun 2019; 512:276-282. [PMID: 30879767 DOI: 10.1016/j.bbrc.2019.03.028] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2019] [Accepted: 03/05/2019] [Indexed: 12/30/2022]
Abstract
Trop2 is a tumor-related antigen closely related to the development of a variety of tumors and has been identified as a promising target for cancer immunotherapy. In this study, a Trop2-IgG antibody was constructed by a eukaryotic expression system based on our previously constructed Trop2-Fab antibody. SDS-PAGE, cell ELISA, affinity assays, fluorescence staining and FACS analyses were performed to characterize Trop2-IgG. Then, CCK-8, wound healing, Transwell and annexin V-PI assays were employed to evaluate the tumor inhibitory effects of Trop2-IgG on OC in vitro, while tumor-bearing mice were constructed to examine the tumor inhibitory effects of Trop2-IgG on OC in vivo. Trop2-IgG was successfully constructed by a eukaryotic expression system and maintained recognition characteristics to Trop2 antigen. In vitro, Trop2-IgG could inhibited tumor cell growth, migration, and invasion compared to those of control cells and induced tumor cell apoptosis. In vivo, Trop2-IgG exerted critical tumor inhibitory effects in OC xenografts. Our data suggest that the use of Trop2-IgG provides a potential therapeutic strategy for the immunotherapy of Trop2-expressing OC.
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Affiliation(s)
- Jinrong Liu
- Department of Obstetrics and Gynecology, Nanjing Maternity and Child Health Care Hospital, Obstetrics and Gynecology Hospital Affiliated to Nanjing Medical University, Nanjing, Jiangsu, China; Department of Obstetrics and Gynecology, Weihai Central Hospital, Weihai, Shandong, China
| | - Dazhen Yang
- Department of Obstetrics and Gynecology, Nanjing Maternity and Child Health Care Hospital, Obstetrics and Gynecology Hospital Affiliated to Nanjing Medical University, Nanjing, Jiangsu, China
| | - Zhengna Yin
- Department of Obstetrics and Gynecology, Nanjing Maternity and Child Health Care Hospital, Obstetrics and Gynecology Hospital Affiliated to Nanjing Medical University, Nanjing, Jiangsu, China
| | - Mengyun Gao
- Department of Obstetrics and Gynecology, Nanjing Maternity and Child Health Care Hospital, Obstetrics and Gynecology Hospital Affiliated to Nanjing Medical University, Nanjing, Jiangsu, China
| | - Hua Tong
- Department of Obstetrics and Gynecology, Nanjing Maternity and Child Health Care Hospital, Obstetrics and Gynecology Hospital Affiliated to Nanjing Medical University, Nanjing, Jiangsu, China
| | - Yiping Su
- Department of Obstetrics and Gynecology, Nanjing Maternity and Child Health Care Hospital, Obstetrics and Gynecology Hospital Affiliated to Nanjing Medical University, Nanjing, Jiangsu, China
| | - Jin Zhu
- Department of Pathology, Key Laboratory of Antibody Technique of the Ministry of Health, Nanjing Medical University, Nanjing, Jiangsu, China; Huadong Medical Institute of Biotechniques, Nanjing, Jiangsu, China
| | - Chunping Ye
- Department of Obstetrics and Gynecology, Nanjing Maternity and Child Health Care Hospital, Obstetrics and Gynecology Hospital Affiliated to Nanjing Medical University, Nanjing, Jiangsu, China.
| | - Huilin Zhang
- Department of Obstetrics and Gynecology, Nanjing Maternity and Child Health Care Hospital, Obstetrics and Gynecology Hospital Affiliated to Nanjing Medical University, Nanjing, Jiangsu, China.
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17
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Goldenberg DM, Stein R, Sharkey RM. The emergence of trophoblast cell-surface antigen 2 (TROP-2) as a novel cancer target. Oncotarget 2018; 9:28989-29006. [PMID: 29989029 PMCID: PMC6034748 DOI: 10.18632/oncotarget.25615] [Citation(s) in RCA: 160] [Impact Index Per Article: 26.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Accepted: 05/31/2018] [Indexed: 12/31/2022] Open
Abstract
TROP-2 is a glycoprotein first described as a surface marker of trophoblast cells, but subsequently shown to be increased in many solid cancers, with lower expression in certain normal tissues. It regulates cancer growth, invasion and spread by several signaling pathways, and has a role in stem cell biology and other diseases. This review summarizes TROP-2's properties, especially in cancer, and particularly its role as a target for antibody-drug conjugates (ADC) or immunotherapy. When the irinotecan metabolite, SN-38, is conjugated to a humanized anti-TROP-2 antibody (sacituzumab govitecan), it shows potent broad anticancer activity in human cancer xenografts and in patients with advanced triple-negative breast, non-small cell and small-cell lung, as well as urothelial cancers.
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Affiliation(s)
- David M. Goldenberg
- Center for Molecular Medicine and Immunology, Belleville, NJ, USA
- IBC Pharmaceuticals, Inc., Morris Plains, NJ, USA
| | - Rhona Stein
- Center for Molecular Medicine and Immunology, Belleville, NJ, USA
| | - Robert M. Sharkey
- Center for Molecular Medicine and Immunology, Belleville, NJ, USA
- Immunomedics, Inc., Morris Plains, NJ, USA
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18
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Zhang L, Yang G, Zhang R, Dong L, Chen H, Bo J, Xue W, Huang Y. Curcumin inhibits cell proliferation and motility via suppression of TROP2 in bladder cancer cells. Int J Oncol 2018; 53:515-526. [PMID: 29901071 PMCID: PMC6017220 DOI: 10.3892/ijo.2018.4423] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Accepted: 04/20/2018] [Indexed: 12/22/2022] Open
Abstract
Bladder cancer (BC) has become a serious health prob-lem and represents the second most commonly diagnosed urological tumor. Curcumin is a principal active natural component of turmeric and has long been used in Asia as a traditional herbal medicine. Curcumin suppresses cell growth in various types of cancer, including BC, by regulating numerous molecular signaling pathways. The human trophoblast cell surface antigen 2 (Trop2) belongs to the tumor-associated calcium signal transducer gene family. Trop2 has been described as a cancer driver and is deregulated in various types of cancer. However, whether Trop2 is involved in curcumin-induced BC cell inhibition remains to be elucidated. The present study hypothesized that Trop2 may be a promising target of curcumin in BC cells. It was found that Trop2 was closely involved in curcumin-induced cell proliferation suppression, mobility inhibition, apoptosis, and cell cycle arrest in BC cells. Curcumin decreased the expression of Trop2 and its downstream target cyclin E1, and increased the level of p27. The overexpression of Trop2 enhanced the oncogenic activity of BC cells, whereas downregulation of the expression of Trop2 suppressed cell proliferation and mobility, increased apoptosis, and sensitized BC cells to curcumin treatment. Therefore, Trop2 may be a promising target of curcumin in BC cells and the inhibition of Trop2 may be an important method for the therapeutic management of patients with BC.
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Affiliation(s)
- Lianhua Zhang
- Department of Urology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, P.R. China
| | - Guoliang Yang
- Department of Urology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, P.R. China
| | - Ruiyun Zhang
- Department of Urology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, P.R. China
| | - Liang Dong
- Department of Urology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, P.R. China
| | - Haige Chen
- Department of Urology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, P.R. China
| | - Juanjie Bo
- Department of Urology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, P.R. China
| | - Wei Xue
- Department of Urology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, P.R. China
| | - Yiran Huang
- Department of Urology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, P.R. China
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19
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Han C, Bellone S, Schwartz PE, Govindan SV, Sharkey RM, Goldenberg DM, Santin AD. Sacituzumab Govitecan (IMMU-132) in treatment-resistant uterine serous carcinoma: A case report. Gynecol Oncol Rep 2018; 25:37-40. [PMID: 29977989 PMCID: PMC6030029 DOI: 10.1016/j.gore.2018.05.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2018] [Revised: 05/11/2018] [Accepted: 05/20/2018] [Indexed: 01/05/2023] Open
Abstract
Background Uterine serous carcinoma (USC) is a biologically aggressive variant of uterine cancer. Effective treatment options for recurrent, chemotherapy-resistant USC are extremely limited. Case We describe a 74-year-old woman with recurrent and widespread treatment-resistant disease, who experienced a dramatic response to sacituzumab govitecan, a novel antibody-drug conjugate (ADC) targeting human trophoblast-cell-surface antigen (TROP-2), after failing multiple chemotherapy and immunotherapy. The impressive clinical response (66% reduction of target lesions by RECIST 1.1 with a duration response of over 10 months) was confirmed with serial CT scans in the absence of significant adverse events. Conclusion Sacituzumab govitecan may present a new treatment option for recurrent USC patients harboring Trop-2+ tumors resistant to chemotherapy. Clinical trials with sacituzumab govitecan are warranted. Uterine serous carcinoma (USC) is a rare but aggressive variant of uterine cancer. Sacituzumab-govitecan (IMMU-132) is an antibody-drug conjugate targeting TROP-2. IMMU-132 may represent a new treatment option for USC overexpressing TROP-2.
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Affiliation(s)
- Chanhee Han
- Department of Obstetrics, Gynecology, and Reproductive Sciences, Yale University School of Medicine, New Haven, CT 06520, United States
| | - Stefania Bellone
- Department of Obstetrics, Gynecology, and Reproductive Sciences, Yale University School of Medicine, New Haven, CT 06520, United States
| | - Peter E Schwartz
- Department of Obstetrics, Gynecology, and Reproductive Sciences, Yale University School of Medicine, New Haven, CT 06520, United States
| | | | - Robert M Sharkey
- Immunomedics, Inc., 300 The American Road, Morris Plains, NJ 07950, United States
| | - David M Goldenberg
- Immunomedics, Inc., 300 The American Road, Morris Plains, NJ 07950, United States
| | - Alessandro D Santin
- Department of Obstetrics, Gynecology, and Reproductive Sciences, Yale University School of Medicine, New Haven, CT 06520, United States
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20
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Abstract
Objectives: Human trophoblast cell-surface marker (TROP-2) has been reported to be overexpressed in various human carcinomas (CAs) and suggested to be a prognostic marker for some CAs. The diagnostic utility of TROP-2 in CAs has not been explored. Methods: Immunohistochemical evaluation of TROP-2 expression on tissue microarray sections of 136 thyroid neoplasms, surgical specimens of 61 atypical thyroid follicular-patterned lesions [including 33 papillary thyroid carcinomas (PTCs), 17 atypical follicular neoplasms (AFNs), and 11 adenomatoid nodules with focal nuclear atypia (ANFNA)], and 20 benign thyroid lesions, as well as 10 cytology specimens of PTCs was performed. For comparison, immunoassay for Hector Battifora mesothelial-1 (HBME-1), galectin-3, and cytokeratin 19 was performed on the 61 atypical thyroid follicular-patterned lesions. Results: Strong membranous staining with TROP-2 was seen in 94% (33/35) of classic PTCs and 81% (30/37) of confirmed follicular variant PTCs on tissue microarray and routine surgical sections, as well as 100% (10/10) of PTCs on cytology specimens; it was not observed in follicular adenomas (n=51) or CAs (n=37), AFNs or ANFNA (n=28), benign (n=20) or normal (n=15) thyroid tissue. In contrast, the expression of HBME-1 and galectin-3 was identified in 100% (33/33) of surgical cases of PTCs and in 57% (16/28) and 50% (14/28) of AFNs and ANFNA, respectively. Conclusions: Our findings demonstrate that a membranous TROP-2 staining pattern is highly specific for PTC, which may serve as a potential diagnostic marker aiding in the accurate classification of morphologically equivocal thyroid follicular-patterned lesions.
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21
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Xu N, Zhang Z, Zhu J, Xu L, Li Y, Duan L, Mao Y, Li H. Overexpression of trophoblast cell surface antigen 2 as an independent marker for a poor prognosis and as a potential therapeutic target in epithelial ovarian carcinoma. Int J Exp Pathol 2016; 97:150-8. [PMID: 27127000 DOI: 10.1111/iep.12174] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2015] [Accepted: 01/25/2016] [Indexed: 12/26/2022] Open
Abstract
Most patients with epithelial ovarian cancer (EOC) are diagnosed at an advanced stage, and therapeutic options for these patients are limited. The identification of suitable biomarkers could be helpful for patients with EOC, who might benefit from targeted therapies even in advanced stages of the disease. Trophoblast cell surface antigen 2 (TROP2) is highly expressed in various human malignant tumours; however, this has not been demonstrated clearly in EOC. In this study, we further evaluated whether TROP2 is a promising marker for EOC, and thus also a potential target for EOC immunotherapy. Quantitative real-time polymerase chain reaction (qPCR) and fluorescence-activated cell sorting (FACS) analysis were employed to determine TROP2 mRNA and protein expression in both human EOC and normal ovarian cell lines. Additionally, TROP2 protein expression was measured by immunohistochemistry in 128 EOC tissue samples, 21 normal ovarian tissues and 18 normal fallopian tubes. The correlations between TROP2 protein expression and patients' clinicopathological features were investigated, and survival outcomes were analysed. TROP2 mRNA and protein levels were upregulated significantly in EOC cell lines compared with normal cell lines. The protein of TROP2 was expressed in the majority of EOC tissue samples (90.6%) and overexpressed in 75 (58.6%) of the 128 tumour samples. TROP2 overexpression was correlated with relevant clinicopathological characteristics and was associated with significantly shortened overall survival and disease-free survival. Furthermore, TROP2 was an independent prognostic marker for EOCs as analysed by Cox regression. TROP2 was a potential biomarker for targeted therapy in patients with TROP2-overexpressing EOC.
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Affiliation(s)
- Ning Xu
- Nanjing Medical University, Nanjing, Jiangsu, China
| | - Zhihong Zhang
- The First Affiliated Hospital with Nanjing Medical University, Nanjing, Jiangsu, China
| | - Jin Zhu
- Huadong Medical Insitute of Biotechniques, Nanjing, Jiangsu, China
| | - Lu Xu
- Nanjing Medical University, Nanjing, Jiangsu, China
| | - Yuhua Li
- Nanjing Medical University, Nanjing, Jiangsu, China
| | - Lei Duan
- Nanjing Medical University, Nanjing, Jiangsu, China
| | - Yuan Mao
- Jiangsu Provincial Hospital, Nanjing, Jiangsu, China
| | - Hongxia Li
- The First Affiliated Hospital with Nanjing Medical University, Nanjing, Jiangsu, China
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22
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Zamarin D, Jazaeri AA. Leveraging immunotherapy for the treatment of gynecologic cancers in the era of precision medicine. Gynecol Oncol 2016; 141:86-94. [PMID: 27016233 PMCID: PMC5007873 DOI: 10.1016/j.ygyno.2015.12.030] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Revised: 11/25/2015] [Accepted: 12/30/2015] [Indexed: 12/14/2022]
Abstract
During the past decade significant progress in the understanding of stimulatory and inhibitory signaling pathways in immune cells has reinvigorated the field of immuno-oncology. In this review we outline the current immunotherapy based approaches for the treatment of gynecological cancers, and focus on the emerging clinical data on immune checkpoint inhibitors, adoptive cell therapies, and vaccines. It is anticipated that in the coming years biomarker-guided clinical trials, will provide for a better understanding of the mechanisms of response and resistance to immunotherapy, and guide combination treatment strategies that will extend the benefit from immunotherapy to patients with gynecologic cancers.
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Affiliation(s)
- Dmitriy Zamarin
- Department of Medicine, Gynecologic Medical Oncology Service, Memorial Sloan Kettering Cancer Center, United States
| | - Amir A Jazaeri
- Department of Gynecologic Oncology and Reproductive Medicine, University of Texas, MD Anderson Cancer Center, United States.
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Zhao P, Yu HZ, Cai JH. Clinical investigation of TROP-2 as an independent biomarker and potential therapeutic target in colon cancer. Mol Med Rep 2015; 12:4364-4369. [PMID: 26059528 DOI: 10.3892/mmr.2015.3900] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2014] [Accepted: 05/06/2015] [Indexed: 11/10/2022] Open
Abstract
Colon cancer is associated with a severe demographic and economic burden worldwide. The pathogenesis of colon cancer is highly complex and involves sequential genetic and epigenetic mechanisms. Despite extensive investigation, the pathogenesis of colon cancer remains to be elucidated. As the third most common type of cancer worldwide, the treatment options for colon cancer are currently limited. Human trophoblast cell‑surface marker (TROP‑2), is a cell‑surface transmembrane glycoprotein overexpressed by several types of epithelial carcinoma. In addition, TROP‑2 has been demonstrated to be associated with tumorigenesis and invasiveness in solid types of tumor. The aim of the present study was to investigate the protein expression of TROP‑2 in colon cancer tissues, and further explore the association between the expression of TROP‑2 and clinicopathological features of patients with colon cancer. The expression and localization of the TROP‑2 protein was examined using western blot analysis and immunofluorescence staining. Finally, the expression of TROP‑2 expression was correlated to conventional clinicopathological features of colon cancer using a χ2 test. The results revealed that TROP‑2 protein was expressed at high levels in the colon cancer tissues, which was associated with the development and pathological process of colon cancer. Therefore, TROP‑2 may be used as a biomarker to determine the clinical prognosis, and as a potential therapeutic target in colon cancer.
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Affiliation(s)
- Peng Zhao
- Department of Surgery, Hebei Medical University, Shijiazhuang, Hebei 050017, P.R. China
| | - Hai-Zheng Yu
- Department of Social Sciences, Hebei United University, Tangshan, Hebei 063000, P.R. China
| | - Jian-Hui Cai
- Department of Surgery, Hebei Medical University, Shijiazhuang, Hebei 050017, P.R. China
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Cardillo TM, Govindan SV, Sharkey RM, Trisal P, Arrojo R, Liu D, Rossi EA, Chang CH, Goldenberg DM. Sacituzumab Govitecan (IMMU-132), an Anti-Trop-2/SN-38 Antibody-Drug Conjugate: Characterization and Efficacy in Pancreatic, Gastric, and Other Cancers. Bioconjug Chem 2015; 26:919-31. [PMID: 25915780 DOI: 10.1021/acs.bioconjchem.5b00223] [Citation(s) in RCA: 165] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Sacituzumab govitecan (IMMU-132) is an antibody-drug conjugate (ADC) made from a humanized anti-Trop-2 monoclonal antibody (hRS7) conjugated with the active metabolite of irinotecan, SN-38. In addition to its further characterization, as the clinical utility of IMMU-132 expands to an ever-widening range of Trop-2-expressing solid tumor types, its efficacy in new disease models needs to be explored in a nonclinical setting. Unlike most ADCs that use ultratoxic drugs and stable linkers, IMMU-132 uses a moderately toxic drug with a moderately stable carbonate bond between SN-38 and the linker. Flow cytometry and immunohistochemistry disclosed that Trop-2 is expressed in a wide range of tumor types, including gastric, pancreatic, triple-negative breast (TNBC), colonic, prostate, and lung. While cell-binding experiments reveal no significant differences between IMMU-132 and parental hRS7 antibody, surface plasmon resonance analysis using a Trop-2 CM5 chip shows a significant binding advantage for IMMU-132 over hRS7. The conjugate retained binding to the neonatal receptor, but it lost greater than 60% of the antibody-dependent cell-mediated cytotoxicity activity compared to that of hRS7. Exposure of tumor cells to either free SN-38 or IMMU-132 demonstrated the same signaling pathways, with pJNK1/2 and p21(WAF1/Cip1) upregulation followed by cleavage of caspases 9, 7, and 3, ultimately leading to poly-ADP-ribose polymerase cleavage and double-stranded DNA breaks. Pharmacokinetics of the intact ADC in mice reveals a mean residence time (MRT) of 15.4 h, while the carrier hRS7 antibody cleared at a similar rate as that of the unconjugated antibody (MRT ∼ 300 h). IMMU-132 treatment of mice bearing human gastric cancer xenografts (17.5 mg/kg; twice weekly × 4 weeks) resulted in significant antitumor effects compared to that of mice treated with a nonspecific control. Clinically relevant dosing schemes of IMMU-132 administered either every other week, weekly, or twice weekly in mice bearing human pancreatic or gastric cancer xenografts demonstrate similar, significant antitumor effects in both models. Current Phase I/II clinical trials ( ClinicalTrials.gov , NCT01631552) confirm anticancer activity of IMMU-132 in cancers expressing Trop-2, including gastric and pancreatic cancer patients.
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Affiliation(s)
| | | | - Robert M Sharkey
- †Immunomedics, Inc., Morris Plains, New Jersey 07950, United States
| | - Preeti Trisal
- †Immunomedics, Inc., Morris Plains, New Jersey 07950, United States
| | - Roberto Arrojo
- †Immunomedics, Inc., Morris Plains, New Jersey 07950, United States
| | - Donglin Liu
- †Immunomedics, Inc., Morris Plains, New Jersey 07950, United States
| | - Edmund A Rossi
- †Immunomedics, Inc., Morris Plains, New Jersey 07950, United States.,‡IBC Pharmaceuticals, Inc., Morris Plains, New Jersey 07950, United States
| | - Chien-Hsing Chang
- †Immunomedics, Inc., Morris Plains, New Jersey 07950, United States.,‡IBC Pharmaceuticals, Inc., Morris Plains, New Jersey 07950, United States
| | - David M Goldenberg
- †Immunomedics, Inc., Morris Plains, New Jersey 07950, United States.,‡IBC Pharmaceuticals, Inc., Morris Plains, New Jersey 07950, United States.,§Center of Molecular Medicine and Immunology, Garden State Cancer Center, Morris Plains, New Jersey 07950, United States
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McDougall ARA, Tolcos M, Hooper SB, Cole TJ, Wallace MJ. Trop2: from development to disease. Dev Dyn 2015; 244:99-109. [PMID: 25523132 DOI: 10.1002/dvdy.24242] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2014] [Revised: 12/08/2014] [Accepted: 12/11/2014] [Indexed: 11/08/2022] Open
Abstract
BACKGROUND Trop2 was first discovered as a biomarker of invasive trophoblast cells. Since then most research has focused on its role in tumourigenesis because it is highly expressed in the vast majority of human tumours and animal models of cancer. It is also highly expressed in stem cells and in many organs during development. RESULTS We review the multifaceted role of Trop2 during development and tumourigenesis, including its role in regulating cell proliferation and migration, self-renewal, and maintenance of basement membrane integrity. We discuss the evolution of Trop2 and its related protein Epcam (Trop1), including their distinct roles. Mutation of Trop2 leads to gelatinous drop-like corneal dystrophy, whereas over-expression of Trop2 in human tumours promotes tumour aggressiveness and increases mortality. Although Trop2 expression is sufficient to promote tumour growth, the surprising discovery that Trop2-null mice have an increased risk of tumour development has highlighted the complexity of Trop2 signaling. Recently, studies have begun to identify the mechanisms underlying TROP2’s functions, including regulated intramembrane proteolysis or specific interactions with integrin b1 and claudin proteins. CONCLUSIONS Understanding the mechanisms underlying TROP2 signaling will clarify its role during development, aid in the development of better cancer treatments and unlock a promising new direction in regenerative medicine.
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Amadio G, Masciullo V, Ferrandina MG, Scambia G. Emerging drugs for endometrial cancer. Expert Opin Emerg Drugs 2014; 19:497-509. [PMID: 25330855 DOI: 10.1517/14728214.2014.971752] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
INTRODUCTION From the dualistic classification that divides endometrial cancer (EC) into two types with distinct underlying molecular profiling, histopathology and clinical behavior, arises a deeper understanding of the carcinogenesis pathways. EC treatment comprises different and multimodal therapeutic approaches, such as chemotherapy, radiation therapy or combinations of novel drugs; however, few of these regimens have truly improved progression-free or survival rates in advanced and metastatic settings. AREAS COVERED We reviewed the main molecular pathways involved in EC carcinogenesis through a wide literature search of novel compounds that alone or in combination with traditional drugs have been investigated or are currently under investigation in randomized clinical trials. EXPERT OPINION The molecular therapies mainly discussed in this review are potential therapeutic candidates for more effective and specific treatments. In the genomic era, a deeper knowledge about molecular characteristics of cancer provides the hope for the development of better therapeutic approaches. Targeting both genetic and epigenetic alterations, attacking tumor cells using cell-surface markers overexpressed in tumor tissue, reactivating antitumor immune responses and identifying predictive biomarkers represent the emerging strategies and the major challenges.
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Affiliation(s)
- Giulia Amadio
- Catholic University of the Sacred Heart, Division of Gynecologic Oncology, Department of Gynecology and Obstetrics , Largo Agostino Gemelli 8, IT-00168 Rome , Italy +39 0630154979 ; +39 063051160 ;
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27
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Xia Y, Li B, Gao N, Xia H, Men Y, Liu Y, Liu Z, Chen Q, Li L. Expression of tumor-associated calcium signal transducer 2 in patients with salivary adenoid cystic carcinoma: Correlation with clinicopathological features and prognosis. Oncol Lett 2014; 8:1670-1674. [PMID: 25202389 PMCID: PMC4156178 DOI: 10.3892/ol.2014.2400] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2013] [Accepted: 07/01/2014] [Indexed: 11/28/2022] Open
Abstract
Salivary adenoid cystic carcinoma (SACC) is a common salivary malignancy. The current treatment option for SACC is complete surgical excision with postoperative radiotherapy. The prognosis remains unsatisfactory, due to frequent local recurrence and distant metastases that directly reduce the overall survival time. Previous studies have shown that overexpression of tumor-associated calcium signal transducer 2 (TACSTD2) is associated with poor prognosis in various human epithelial cancers. The expression of TACSTD2 in SACC is currently unknown. The present study therefore aimed to retrospectively investigate TACSTD2 protein expression by immunohistochemistry on paraffin-embedded primary tumor tissue samples from a series of consecutive SACC patients (n=81). The correlation of TACSTD2 expression with clinicopathological variables was evaluated using either the Kruskal-Wallis or Mann-Whitney statistical tests. The survival curves were plotted using the Kaplan-Meier method. The parameters of prognostic significance found by univariate analysis were verified in a multivariate Cox regression model. Overexpression of TACSTD2 was detected in 35/81 (44%) SACC patients and was significantly associated with a decreased overall survival (P<0.01). Univariate analysis showed that TACSTD2 overexpression was correlated with TNM stage (P=0.020), local recurrence (P=0.002) and distant metastasis (P=0.001). Multivariate analyses further revealed that TACSTD2 may be an independent prognostic indicator. In conclusion, TACTSD2 could be recognized as an independent prognostic indicator for SACC. Gene therapy targeting TACSTD2 may be a possible treatment approach for patients with SACC overexpressing this cell-surface marker.
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Affiliation(s)
- Yichao Xia
- Department of Head and Neck Oncology Surgery, West China College of Stomatology, Sichuan University, Chengdu, Sichuan 610041, P.R. China ; Department of Pathology, State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Bo Li
- Department of Head and Neck Oncology Surgery, West China College of Stomatology, Sichuan University, Chengdu, Sichuan 610041, P.R. China ; Department of Pathology, State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Ning Gao
- Department of Head and Neck Oncology Surgery, West China College of Stomatology, Sichuan University, Chengdu, Sichuan 610041, P.R. China ; Department of Pathology, State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Hui Xia
- Department of Head and Neck Oncology Surgery, West China College of Stomatology, Sichuan University, Chengdu, Sichuan 610041, P.R. China ; Department of Pathology, State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Yi Men
- Department of Head and Neck Oncology Surgery, West China College of Stomatology, Sichuan University, Chengdu, Sichuan 610041, P.R. China ; Department of Pathology, State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Ying Liu
- Department of Head and Neck Oncology Surgery, West China College of Stomatology, Sichuan University, Chengdu, Sichuan 610041, P.R. China ; Department of Pathology, State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Zhe Liu
- Department of Head and Neck Oncology Surgery, West China College of Stomatology, Sichuan University, Chengdu, Sichuan 610041, P.R. China ; Department of Pathology, State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Qianming Chen
- Department of Pathology, State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Longjiang Li
- Department of Head and Neck Oncology Surgery, West China College of Stomatology, Sichuan University, Chengdu, Sichuan 610041, P.R. China ; Department of Pathology, State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, Sichuan 610041, P.R. China
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Wang X, Long M, Dong K, Lin F, Weng Y, Ouyang Y, Liu L, Wei J, Chen X, He T, Zhang HZ. Chemotherapy agents-induced immunoresistance in lung cancer cells could be reversed by trop-2 inhibition in vitro and in vivo by interaction with MAPK signaling pathway. Cancer Biol Ther 2013; 14:1123-32. [PMID: 24025415 DOI: 10.4161/cbt.26341] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Chemotherapy has been widely used in cancer treatment, but the prognosis of the cancer patients following chemotherapy has not been substantially improved. Alternative strategies such as immunotherapy and their combinations with chemotherapy are now being considered; however, the effects of chemotherapy on the immune responses of cancer cells are not fully understood. In the present studies, we reveal a potential link between chemotherapy and cancer immunoresistance, we first examined the effects of chemopreventive agent DDP on the expression of a cell surface glycopreotein Trop-2 in lung cancer cells, and found that DDP not only induce Trop-2 surface expression in human lung cancer cells, but also induce T-cell apoptosis effectively. In order to investigate the relationship between DDP-induced Trop-2 expression and T-cell apoptosis, we stably transfected A549 and PC14 lung cancer cells with Trop-2 shRNA, the DDP-induced Trop-2 surface expression was effectively decreased in stably transfected cell lines, but chemotherapeutic reagent-induced cell proliferation inhibition and apoptosis were increased through inhibition of the MAPK signaling pathway. In vivo animal experiments showed that Trop-2 knockdown tumors displayed a slower growth rate than the control xenografts. Importantly, DDP treatment exhibited a strong antitumor activity in the mice with Trop-2 knockdown tumors, but only a marginal effect in the control group. Taken together, our data show that DDP resistance in lung cancer cells could be induced through increased surface expression of Trop-2, which at least partially by interfering with MAPK pathway. These results provide novel insight into the function of Trop-2 and encourage the design and testing of approaches targeting this protein and its partners.
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Affiliation(s)
- Xi Wang
- Department of Clinical Diagnosis; Tangdu Hospital; Fourth Military Medical University; Xi'an, PR China
| | - Min Long
- Department of Clinical Diagnosis; Tangdu Hospital; Fourth Military Medical University; Xi'an, PR China
| | - Ke Dong
- Department of Clinical Diagnosis; Tangdu Hospital; Fourth Military Medical University; Xi'an, PR China
| | - Fang Lin
- Department of Clinical Diagnosis; Tangdu Hospital; Fourth Military Medical University; Xi'an, PR China
| | - Yuanyuan Weng
- Department of Clinical Diagnosis; Tangdu Hospital; Fourth Military Medical University; Xi'an, PR China
| | - Yongri Ouyang
- Department of Clinical Diagnosis; Tangdu Hospital; Fourth Military Medical University; Xi'an, PR China
| | - Li Liu
- Department of Clinical Diagnosis; Tangdu Hospital; Fourth Military Medical University; Xi'an, PR China
| | - Junxia Wei
- Department of Clinical Diagnosis; Tangdu Hospital; Fourth Military Medical University; Xi'an, PR China
| | - Xi Chen
- Department of Clinical Diagnosis; Tangdu Hospital; Fourth Military Medical University; Xi'an, PR China
| | - Ting He
- Department of Clinical Diagnosis; Tangdu Hospital; Fourth Military Medical University; Xi'an, PR China
| | - Hui-Zhong Zhang
- Department of Clinical Diagnosis; Tangdu Hospital; Fourth Military Medical University; Xi'an, PR China
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Dong P, Kaneuchi M, Konno Y, Watari H, Sudo S, Sakuragi N. Emerging therapeutic biomarkers in endometrial cancer. BIOMED RESEARCH INTERNATIONAL 2013; 2013:130362. [PMID: 23819113 PMCID: PMC3693108 DOI: 10.1155/2013/130362] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/14/2013] [Accepted: 05/28/2013] [Indexed: 01/10/2023]
Abstract
Although clinical trials of molecular therapies targeting critical biomarkers (mTOR, epidermal growth factor receptor/epidermal growth factor receptor 2, and vascular endothelial growth factor) in endometrial cancer show modest effects, there are still challenges that might remain regarding primary/acquired drug resistance and unexpected side effects on normal tissues. New studies that aim to target both genetic and epigenetic alterations (noncoding microRNA) underlying malignant properties of tumor cells and to specifically attack tumor cells using cell surface markers overexpressed in tumor tissue are emerging. More importantly, strategies that disrupt the cancer stem cell/epithelial-mesenchymal transition-dependent signals and reactivate antitumor immune responses would bring new hope for complete elimination of all cell compartments in endometrial cancer. We briefly review the current status of molecular therapies tested in clinical trials and mainly discuss the potential therapeutic candidates that are possibly used to develop more effective and specific therapies against endometrial cancer progression and metastasis.
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Affiliation(s)
- Peixin Dong
- Department of Women's Health Educational System, Hokkaido University School of Medicine, Hokkaido University, N15, W7, Sapporo 060-8638, Japan
| | - Masanori Kaneuchi
- Department of Women's Health Educational System, Hokkaido University School of Medicine, Hokkaido University, N15, W7, Sapporo 060-8638, Japan
| | - Yosuke Konno
- Department of Gynecology, Hokkaido University School of Medicine, Hokkaido University, N15, W7, Sapporo 060-8638, Japan
| | - Hidemichi Watari
- Department of Gynecology, Hokkaido University School of Medicine, Hokkaido University, N15, W7, Sapporo 060-8638, Japan
| | - Satoko Sudo
- Department of Gynecology, Hokkaido University School of Medicine, Hokkaido University, N15, W7, Sapporo 060-8638, Japan
| | - Noriaki Sakuragi
- Department of Gynecology, Hokkaido University School of Medicine, Hokkaido University, N15, W7, Sapporo 060-8638, Japan
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TROP2 expression and its correlation with tumor proliferation and angiogenesis in human gliomas. Neurol Sci 2013; 34:1745-50. [PMID: 23397225 DOI: 10.1007/s10072-013-1326-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2012] [Accepted: 01/09/2013] [Indexed: 01/01/2023]
Abstract
Trophoblast cell surface antigen 2 (TROP2) is a transmembrane glycoprotein which is associated with tumor development and progression in a variety of epithelial carcinomas, while its expression and role in gliomas have not been considered. The aim of the study was to investigate TROP2 expression in malignant gliomas with different World Health Organization (WHO) classification and its correlation with tumor proliferation and angiogenesis. Immuohistochemistry was used to determine TROP2 and Ki-67 expression and microvessel density (MVD) in tumor specimens and normal brain tissues from 69 glioma patients and the relationship between TROP2 and Ki-67 and MVD was investigated. Immunohistochemistry results showed that the TROP2 expression was found in 59 (85.5 %) of the 69 tumor specimens, but no expression in normal brain tissues. Furthermore, TROP2 expression is significantly higher in WHO grade III (P = 0.025) and WHO grade IV (P = 0.011) gliomas than in WHO grade II gliomas. TROP2 expression correlates with Ki-67 (r = 0.676, P = 0.012) and MVD (r = 0.365, P = 0.035), but not with gender or age in human gliomas. These results suggested that the TROP2 correlated with malignancy, proliferation and angiogenesis in human gliomas. This is the first study describing TROP2 expression in gliomas and its proliferation and angiogenesis-related characteristic may serve as a potential therapeutic target for glioma treatment.
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Ning S, Guo S, Xie J, Xu Y, Lu X, Chen Y. TROP2 correlates with microvessel density and poor prognosis in hilar cholangiocarcinoma. J Gastrointest Surg 2013. [PMID: 23207686 DOI: 10.1007/s11605-012-2105-1] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND Trophoblast cell surface antigen 2 (TROP2) was found to be associated with tumor progression and poor prognosis in a variety of epithelial carcinomas. The aim of the study was to investigate TROP2 expression and its prognostic impact in hilar cholangiocarcinoma. METHODS Immunohistochemistry and quantitative real-time PCR were used to determine TROP2 expression in surgical specimens from 70 hilar cholangiocarcinoma patients receiving radical resection. The relationship between TROP2 expression and microvessel density was investigated and standard statistical analysis was used to evaluate TROP2 prognosis significance in hilar cholangiocarcinoma. RESULTS High TROP2 expression by immunohistochemistry was found in 43 (61.4 %) of the 70 tumor specimens. Quantitative real-time PCR confirmed that TROP2 level in tumor was significantly higher than in non-tumoral biliary tissues (P = 0.001). Significant correlations were found between TROP2 expression and histological differentiation (P = 0.016) and tumor T stage (P = 0.031) in hilar cholangiocarcinoma. TROP2 expression correlated with microvessel density in hilar cholangiocarcinoma (P = 0.026). High TROP2 expression patients had a significantly poorer overall survival rate than those with low TROP2 expression (30 vs. 68.5 %, P = 0.001), and multivariate Cox regression analysis indicated TROP2 as an independent prognostic factor for hilar cholangiocarcinoma (P = 0.004). CONCLUSION TROP2 expression correlates with microvessel density significantly and is an independent prognostic factor in human hilar cholangiocarcinoma.
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Affiliation(s)
- Shanglei Ning
- Department of Hepatobiliary Surgery, Qilu Hospital, Shandong University, 250012, Jinan, China
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Bignotti E, Zanotti L, Calza S, Falchetti M, Lonardi S, Ravaggi A, Romani C, Todeschini P, Bandiera E, Tassi RA, Facchetti F, Sartori E, Pecorelli S, Roque DM, Santin AD. Trop-2 protein overexpression is an independent marker for predicting disease recurrence in endometrioid endometrial carcinoma. BMC Clin Pathol 2012; 12:22. [PMID: 23151048 PMCID: PMC3534488 DOI: 10.1186/1472-6890-12-22] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2012] [Accepted: 11/07/2012] [Indexed: 01/16/2023] Open
Abstract
Background Endometrial cancer is the most common gynecologic malignancy in developed countries. Trop-2 is a glycoprotein involved in cellular signal transduction and is differentially overexpressed relative to normal tissue in a variety of human adenocarcinomas, including endometrioid endometrial carcinomas (EEC). Trop-2 overexpression has been proposed as a marker for biologically aggressive tumor phenotypes. Methods Trop-2 protein expression was quantified using tissue microarrays consisting of formalin-fixed paraffin-embedded specimens from 118 patients who underwent surgical staging from 2001–9 by laparotomy for EEC. Clinicopathologic characteristics including age, stage, grade, lymphovascular space invasion, and medical comorbidities were correlated with immunostaining score. Univariate and multivariate analyses were performed for overall survival, disease-free survival, and progression-free survival in relation to clinical parameters and Trop-2 protein expression. Results Clinical outcome data were available for 103 patients. Strong Trop-2 immunostaining was significantly associated with higher tumor grade (p=0.02) and cervical involvement (p<0.01). Univariate analyses showed a significant association with reduced disease-free survival (DFS) (p=0.01), and a trend towards significance for overall and progression-free survival (p=0.06 and p=0.05, respectively). Multivariate analyses revealed Trop-2 overexpression and advanced FIGO stage to be independent prognostic factors for poor DFS (p=0.04 and p <0.001, respectively). Conclusions Trop-2 protein overexpression is significantly associated with higher tumor grade and serves as an independent prognostic factor for DFS in endometrioid endometrial cancer.
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Affiliation(s)
- Eliana Bignotti
- "Angelo Nocivelli" Institute of Molecular Medicine, Division of Gynecologic Oncology, University of Brescia, Viale Europa 11, 25123, Brescia, Italy.
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Guerra E, Trerotola M, Aloisi AL, Tripaldi R, Vacca G, La Sorda R, Lattanzio R, Piantelli M, Alberti S. The Trop-2 signalling network in cancer growth. Oncogene 2012; 32:1594-600. [PMID: 22562244 DOI: 10.1038/onc.2012.151] [Citation(s) in RCA: 91] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Our findings show that upregulation of a wild-type Trop-2 has a key controlling role in human cancer growth, and that tumour development is quantitatively driven by Trop-2 expression levels. However, little is known about the regulation of expression of the TROP2 gene. Hence, we investigated the TROP2 transcription control network. TROP2 expression was shown to depend on a highly interconnected web of transcription factors: TP63/TP53L, ERG, GRHL1/Get-1 (grainyhead-like epithelial transactivator), HNF1A/TCF-1 (T-cell factor), SPI1/PU.1, WT (Wilms' tumour)1, GLIS2, AIRE (autoimmune regulator), FOXM1 (forkhead box M1) and FOXP3, with HNF4A as the major network hub. TROP2 upregulation was shown to subsequently drive the expression and activation of CREB1 (cyclic AMP-responsive-element binding protein), Jun, NF-κB, Rb, STAT1 and STAT3 through induction of the cyclin D1 and ERK (extracellular signal regulated kinase)/MEK (MAPK/ERK kinase) pathways. Growth-stimulatory signalling through NF-κB, cyclin D1 and ERK was shown to require an intact Trop-2 cytoplasmic tail. Network hubs and interacting partners are co-expressed with Trop-2 in primary human tumours, supporting a role of this signalling network in cancer growth.
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Affiliation(s)
- E Guerra
- Unit of Cancer Pathology, Department of Oncology and Experimental Medicine and CeSI, Foundation University 'G. d'Annunzio', Chieti, Italy
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El-Sahwi KS, Schwartz PE, Santin AD. Development of targeted therapy in uterine serous carcinoma, a biologically aggressive variant of endometrial cancer. Expert Rev Anticancer Ther 2012; 12:41-9. [PMID: 22149431 DOI: 10.1586/era.11.192] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Endometrial cancer (EC) is the most common female genital malignancy in the USA. Most carcinomas arising from the uterus are estrogen dependent and are associated with obesity and hypertension. They are designated type I ECs and typically, due to their early diagnosis secondary to postmenopausal bleeding, have a good prognosis. By contrast, type II ECs develop in older patients, are not hormone dependent and are responsible for most recurrences and deaths from EC. Uterine serous cancer constitutes up to 10% of all endometrial tumors, and represents the most biologically aggressive variant of type II EC. This article will describe the most salient molecular markers that have been identified in uterine serous cancer, thus far with emphasis on the use of erbB2 (HER2/neu) as the first of a series of therapeutic markers for the treatment of this highly-aggressive subset of ECs.
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Affiliation(s)
- Karim S El-Sahwi
- Department of Obstetrics, Gynecology and Reproductive Sciences, Yale University School of Medicine, CT, USA
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Trop-2 overexpression in poorly differentiated endometrial endometrioid carcinoma: implications for immunotherapy with hRS7, a humanized anti-trop-2 monoclonal antibody. Int J Gynecol Cancer 2012; 21:1613-21. [PMID: 21892093 DOI: 10.1097/igc.0b013e318228f6da] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
OBJECTIVE We evaluated the expression of human trophoblast cell surface marker (Trop-2) in endometrial endometrioid carcinoma (EEC) and the potential application of hRS7, a humanized monoclonal anti-Trop-2 antibody, as a therapeutic agent against poorly differentiated EEC. METHODS Trop-2 expression was evaluated by immunohistochemistry in 131 EEC with different degrees of differentiation and 32 normal endometrial controls (NEC). Trop-2 expression was also evaluated by quantitative real-time polymerase chain reaction and flow cytometry in 3 primary EEC cell lines derived from patients harboring poorly differentiated EEC. Finally, the sensitivity of grade 3 EEC cell lines to hRS7 antibody-dependent cellular cytotoxicity was tested in standard 5-hour Cr release assays. RESULTS Trop-2 expression was detected in 126 (96.2%) of 131 EEC samples. Tumor tissues showed markedly increased Trop-2 positivity compared with NEC (P = 0.001). Trop-2 expression was significantly higher in all grades of EEC versus NEC. Grade 3 tumors displayed significantly stronger Trop-2 immunostaining compared with grade 1 EEC (P = 0.01). High Trop-2 expression by quantitative real-time polymerase chain reaction and flow cytometry was found in 1 grade 3 EEC primary cell line (EEC-ARK-1). Unlike Trop-2-negative EEC cell lines, EEC-ARK-1 was found highly sensitive to hRS7-mediated antibody-dependent cellular cytotoxicity in vitro (range of killing, 33.9%-50.6%; P = 0.004). Human serum did not significantly inhibit hRS7-mediated cytotoxicity against EEC-ARK-1 (P = 0.773). CONCLUSIONS Trop-2 is highly expressed in EEC, and its expression is significantly higher in poorly differentiated EEC when compared with well-differentiated EEC. Primary grade 3 EECs overexpressing Trop-2 are highly sensitive to hRS7-mediated cytotoxicity in vitro. hRS7 may represent a novel therapeutic agent for the treatment of high-grade EEC refractory to standard treatment modalities.
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Trerotola M, Cantanelli P, Guerra E, Tripaldi R, Aloisi AL, Bonasera V, Lattanzio R, Lange RD, Weidle UH, Piantelli M, Alberti S. Upregulation of Trop-2 quantitatively stimulates human cancer growth. Oncogene 2012; 32:222-33. [DOI: 10.1038/onc.2012.36] [Citation(s) in RCA: 143] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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38
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Li JJ, Zhang RL, Fu YC, Wu WP, Chen MX, Geng YJ, Huang DN, Ai L, Yang F, Hu Z. Monoclonal antibody 12D5 inhibits eosinophil infiltration in the brain of Angiostrongylus cantonensis-infected BALB/c mice. Acta Trop 2012; 121:118-24. [PMID: 22074686 DOI: 10.1016/j.actatropica.2011.10.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2011] [Revised: 10/08/2011] [Accepted: 10/23/2011] [Indexed: 01/06/2023]
Abstract
Each of BALB/c mice was infected with 50 Angiostrongylus cantonensis larvae. One group of mice received an intraperitoneal injection of 50 μg 12D5 monoclonal antibody (mAb) against a 98 kDa antigen of adult worms at 10 days post-infection (dpi), with a booster injection of 25 μg at 12 dpi. Five mice from each group were sacrificed at 14 dpi for pathological examination and RNA extraction. The infiltration of eosinophils and severity of eosinophilic meningitis were reduced in 12D5 mAb-treated mice compared with the infected mice without 12D5 treatment. The levels of eotaxin mRNA expression in spleen significantly increased and the expression of the Th2-type cytokine IL-5 significantly decreased. However, the expression of IL-4 was not changed. 12D5 mAb can observably enhance the survival rate of infected mice and reduce symptoms of angiostrongyliasis. A. cantonensis infection is a major cause of eosinophilic meningoencephalitis. The results of this study could be helpful for the development of treatment of human angiostrongylosis.
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Affiliation(s)
- Jun-Jian Li
- Shenzhen Center for Disease Control and Prevention, Shenzhen, Guangdong Province, China
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Varughese J, Cocco E, Bellone S, Ratner E, Silasi DA, Azodi M, Schwartz PE, Rutherford TJ, Buza N, Pecorelli S, Santin AD. Cervical carcinomas overexpress human trophoblast cell-surface marker (Trop-2) and are highly sensitive to immunotherapy with hRS7, a humanized monoclonal anti-Trop-2 antibody. Am J Obstet Gynecol 2011; 205:567.e1-7. [PMID: 21889762 PMCID: PMC3224189 DOI: 10.1016/j.ajog.2011.06.093] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2011] [Revised: 06/09/2011] [Accepted: 06/29/2011] [Indexed: 01/12/2023]
Abstract
OBJECTIVE We evaluated the expression of human trophoblast cell-surface marker (Trop-2) and the potential of hRS7, a humanized monoclonal anti-Trop-2 antibody, against treatment-refractory cervical cancer. STUDY DESIGN Trop-2 expression was evaluated by immunohistochemistry, real-time polymerase chain reaction, and flow cytometry. Sensitivity to hRS7 antibody-dependent cell-mediated cytotoxicity (ADCC) and complement-dependent cytotoxicity was tested in 5-hour chromium release assays. The effect of interleukin (IL)-2 on hRS7 ADCC was also investigated. RESULTS Membrane Trop-2 expression was observed in 8 of 8 (100%) of the cancer samples tested by immunohistochemistry, but not in normal cervix. High messenger RNA expression by real-time polymerase chain reaction and high Trop-2 surface expression by flow cytometry were detected in 80% of cervical cancers (4 of 5 cell lines). Although these tumors were resistant to natural killer cell-dependent cytotoxicity in vitro (mean killing, 6.0%), Trop-2-positive cell lines showed high sensitivity to hRS7 ADCC (range of killing, 30.6-73.2%). Incubation with IL-2 further increased the level of cytotoxicity against Trop-2-positive tumors. CONCLUSION hRS7 may represent a novel treatment option for patients with cervical cancer refractory to conventional treatment modalities.
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MESH Headings
- Adenocarcinoma/drug therapy
- Adenocarcinoma/immunology
- Adenocarcinoma/pathology
- Adult
- Antibodies, Monoclonal/pharmacology
- Antigens, Neoplasm/genetics
- Antigens, Neoplasm/immunology
- Antigens, Neoplasm/metabolism
- Biomarkers, Tumor/genetics
- Carcinoma, Squamous Cell/drug therapy
- Carcinoma, Squamous Cell/genetics
- Carcinoma, Squamous Cell/pathology
- Cell Adhesion Molecules/genetics
- Cell Adhesion Molecules/immunology
- Cell Adhesion Molecules/metabolism
- Cell Line, Tumor
- Complement System Proteins/immunology
- Complement System Proteins/metabolism
- Drug Resistance, Neoplasm/immunology
- Drug Synergism
- Female
- Flow Cytometry
- Gene Expression Regulation, Neoplastic
- Humans
- Immunoglobulin G/blood
- Immunoglobulin G/immunology
- Interleukin-2/pharmacology
- Killer Cells, Natural/immunology
- Real-Time Polymerase Chain Reaction
- Uterine Cervical Neoplasms/drug therapy
- Uterine Cervical Neoplasms/genetics
- Uterine Cervical Neoplasms/pathology
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Affiliation(s)
- Joyce Varughese
- Division of Gynecologic Oncology, Department of Obstetrics, Gynecology & Reproductive Sciences, New Haven, CT, USA
| | - Emiliano Cocco
- Division of Gynecologic Oncology, Department of Obstetrics, Gynecology & Reproductive Sciences, New Haven, CT, USA
| | - Stefania Bellone
- Division of Gynecologic Oncology, Department of Obstetrics, Gynecology & Reproductive Sciences, New Haven, CT, USA
| | - Elena Ratner
- Division of Gynecologic Oncology, Department of Obstetrics, Gynecology & Reproductive Sciences, New Haven, CT, USA
| | - Dan-Arin Silasi
- Division of Gynecologic Oncology, Department of Obstetrics, Gynecology & Reproductive Sciences, New Haven, CT, USA
| | - Masoud Azodi
- Division of Gynecologic Oncology, Department of Obstetrics, Gynecology & Reproductive Sciences, New Haven, CT, USA
| | - Peter E. Schwartz
- Division of Gynecologic Oncology, Department of Obstetrics, Gynecology & Reproductive Sciences, New Haven, CT, USA
| | - Thomas J. Rutherford
- Division of Gynecologic Oncology, Department of Obstetrics, Gynecology & Reproductive Sciences, New Haven, CT, USA
| | - Natalia Buza
- Pathology, Yale University School of Medicine, New Haven, CT, USA
| | - Sergio Pecorelli
- Division of Gynecologic Oncology, University of Brescia, Brescia, Italy
| | - Alessandro D. Santin
- Division of Gynecologic Oncology, Department of Obstetrics, Gynecology & Reproductive Sciences, New Haven, CT, USA
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Raji R, Guzzo F, Carrara L, Varughese J, Cocco E, Bellone S, Betti M, Todeschini P, Gasparrini S, Ratner E, Silasi DA, Azodi M, Schwartz P, Rutherford TJ, Buza N, Pecorelli S, Santin AD. Uterine and ovarian carcinosarcomas overexpressing Trop-2 are sensitive to hRS7, a humanized anti-Trop-2 antibody. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2011; 30:106. [PMID: 22075385 PMCID: PMC3224774 DOI: 10.1186/1756-9966-30-106] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/23/2011] [Accepted: 11/10/2011] [Indexed: 11/30/2022]
Abstract
Background We evaluated the expression of human trophoblastic cell-surface marker (Trop-2) and the potential of hRS7 - a humanized monoclonal anti-Trop-2 antibody - as a therapeutic strategy against treatment-refractory human uterine (UMMT) and ovarian (OMMT) carcinosarcoma cell lines. Materials and methods Trop-2 expression was evaluated by immunohistochemistry (IHC) in paraffin-embedded tumor tissues, by real-time polymerase-chain-reaction (RT-PCR) and flow-cytometry in cell lines. Sensitivity to hRS7 antibody-dependent cellular cytotoxicity (ADCC) and complement-dependent cytotoxicity was tested using 5-hour chromium-release assays against UMMT and OMMT cells. Results Trop-2 expression was elevated in 9 of 26 (35%) UMMT and 8 of 14 (57%) OMMT tissues tested by IHC. Positivity for Trop-2 mRNA by RT-PCR and surface expression by flow cytometry were detected in 2 of 4 cell lines, with high positivity noted in OMMT-ARK-2. OMMT-ARK-2 was highly sensitive to hRS7 ADCC (range: 34.7-41.0%; P < 0.001) with negligible cytotoxicity seen in the absence of hRS7 or in the presence of control antibody (range: 1.1-2.5%). Human IgG did not significantly inhibit ADCC while human complement increased, hRS7-mediated-cytotoxicity against OMMT-ARK-2. Conclusion Trop-2 is overexpressed in a proportion of UMMT and OMMT, and hRS7 may represent a novel, potentially highly effective treatment option for patients with treatment-refractory carcinosarcomas overexpressing Trop-2.
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Affiliation(s)
- Rhoda Raji
- Department of Obstetrics, Gynecology & Reproductive Sciences, Yale University School of Medicine, New Haven, CT, USA
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Wang J, Zhang K, Grabowska D, Li A, Dong Y, Day R, Humphrey P, Lewis J, Kladney RD, Arbeit JM, Weber JD, Chung CH, Michel LS. Loss of Trop2 promotes carcinogenesis and features of epithelial to mesenchymal transition in squamous cell carcinoma. Mol Cancer Res 2011; 9:1686-95. [PMID: 21970857 DOI: 10.1158/1541-7786.mcr-11-0241] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Trop2, an oncogenic cell surface protein under investigation as a therapeutic target, is commonly overexpressed in several epithelial tumor types yet its function in tumor biology remains relatively unexplored. To investigate the role of Trop2 in epithelial carcinogenesis, we generated Trop2(-/-) mice, which are viable and possess a normal lifespan. Contrary to expectations, Trop2 loss fails to suppress keratinocyte transformation. Instead, ras-transformed Trop2(-/-) keratinocytes preferentially pass through an epithelial to mesenchymal transition (EMT) and form tumors with spindle cell histology. Furthermore, Trop2 loss renders Arf-null mice susceptible to the formation of biphasic sarcomatoid carcinomas containing both squamous and spindle cell components upon carcinogen exposure in an otherwise skin cancer-resistant strain (C57BL/6). Immortalized keratinocytes derived from Trop2(-/-)Arf(-/-) mice exhibit enhanced proliferative and migratory capacity as well as increased activation of mitogen-activated protein kinase and Src prior to transformation. The clinical relevance of these findings was supported by studying the molecular epidemiology of Trop2 in primary head and neck squamous cell carcinomas. This analysis revealed that Trop2 mRNA levels are decreased in a subset of tumors with features of EMT, and total loss of Trop2 protein expression is observed in the spindle cell component of sarcomatoid carcinomas. Therefore, while previous studies have emphasized the potential importance of Trop2 gain of function, these results uncover a role for Trop2 loss in tumorigenesis and the mesenchymal transdifferentiation observed in a subset of squamous cell carcinomas.
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Affiliation(s)
- Jianbo Wang
- Division of Oncology, Department of Internal Medicine, Washington University School of Medicine, Saint Louis, Missouri 63110, USA
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Varughese J, Cocco E, Bellone S, Bellone M, Todeschini P, Carrara L, Schwartz PE, Rutherford TJ, Pecorelli S, Santin AD. High-grade, chemotherapy-resistant primary ovarian carcinoma cell lines overexpress human trophoblast cell-surface marker (Trop-2) and are highly sensitive to immunotherapy with hRS7, a humanized monoclonal anti-Trop-2 antibody. Gynecol Oncol 2011; 122:171-7. [PMID: 21453957 DOI: 10.1016/j.ygyno.2011.03.002] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2010] [Revised: 02/07/2011] [Accepted: 03/03/2011] [Indexed: 11/25/2022]
Abstract
OBJECTIVE We evaluated the expression of human trophoblast cell-surface marker (Trop-2) and the potential of hRS7, a humanized monoclonal anti-Trop-2 antibody, as a therapeutic agent against chemotherapy-resistant ovarian disease. METHODS Trop-2 expression was evaluated by immunohistochemistry (IHC) in 50 ovarian serous papillary carcinoma specimens. Trop-2 expression was also evaluated by real-time PCR (qRT-PCR) and flow cytometry in a total of 6 primary ovarian cancer cell lines derived from patients with chemotherapy-resistant disease. Sensitivity to hRS7 antibody-dependent cellular cytotoxicity (ADCC) was tested in standard 5-hour ⁵¹Cr-release assays. The effect of serum and interleukin-2 (IL-2) on hRS7-mediated ADCC was also studied. RESULTS Trop-2 expression was found in 41 of 50 (82%) tumor tissues tested by IHC. 83% (5 of 6) of the ovarian cancer cell lines tested by qRT-PCR and flow cytometry demonstrated high Trop-2 expression. All primary ovarian cancer cell lines expressing Trop-2 were highly sensitive to hRS7-mediated ADCC in vitro (range of killing: 19.3% to 40.8%) (p<0.001). Negligible cytotoxicity against chemotherapy-resistant ovarian cancers was seen in the absence of hRS7 or in the presence of rituximab control antibody (range of killing: 1.1% to 8.9%). Human serum did not significantly inhibit hRS7-mediated cytotoxicity while incubation with IL-2 in addition to hRS7 further increased the cytotoxic activity (p=0.04). CONCLUSIONS Trop-2 is highly expressed in chemotherapy-resistant ovarian cancer cell lines at mRNA and protein levels. Primary ovarian carcinoma cell lines are highly sensitive to hRS7-mediated cytotoxicity in vitro. hRS7 may represent a novel therapeutic agent for the treatment of high-grade, chemotherapy-resistant ovarian cancer.
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Affiliation(s)
- Joyce Varughese
- Yale University School of Medicine Department of Obstetrics, Gynecology, & Reproductive Sciences, New Haven, CT 06520-8063, USA
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