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Ritu, Chandra P, Das A. Immune checkpoint targeting antibodies hold promise for combinatorial cancer therapeutics. Clin Exp Med 2023; 23:4297-4322. [PMID: 37804358 DOI: 10.1007/s10238-023-01201-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2023] [Accepted: 09/19/2023] [Indexed: 10/09/2023]
Abstract
Through improving the immune system's ability to recognize and combat tumor cells as well as its receptivity to changes in the tumor microenvironment, immunotherapy has emerged as a highly successful addition to the treatment of cancer. However, tumor heterogeneity poses a significant challenge in cancer therapy as it can undermine the anti-tumor immune response through the manipulation of the extracellular matrix. To address these challenges and improve targeted therapies and combination treatments, the food and drug administration has approved several immunomodulatory antibodies to suppress immunological checkpoints. Combinatorial therapies necessitate the identification of multiple targets that regulate the intricate communication between immune cells, cytokines, chemokines, and cellular responses within the tumor microenvironment. The purpose of this study is to provide a comprehensive overview of the ongoing clinical trials involving immunomodulatory antibodies in various cancer types. It explores the potential of these antibodies to modulate the immune system and enhance anti-tumor responses. Additionally, it discusses the perspectives and prospects of immunomodulatory therapeutics in cancer treatment. Although immunotherapy shows great promise in cancer treatment, it is not exempt from side effects that can arise due to hyperactivity of the immune system. Therefore, understanding the intricate balance between immune activation and regulation is crucial for minimizing these adverse effects and optimizing treatment outcomes. This study aims to contribute to the growing body of knowledge surrounding immunomodulatory antibodies and their potential as effective therapeutic options in cancer treatment, ultimately paving the way for improved patient outcomes and deepening our perception of the intricate interactivity between the immune system and tumors.
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Affiliation(s)
- Ritu
- Department of Biotechnology, Delhi Technological University, Main Bawana Road, New Delhi, 110042, India
| | - Prakash Chandra
- Department of Biotechnology, Delhi Technological University, Main Bawana Road, New Delhi, 110042, India
| | - Asmita Das
- Department of Biotechnology, Delhi Technological University, Main Bawana Road, New Delhi, 110042, India.
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2
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Ratan C, Arian AM, Rajendran R, Jayakumar R, Masson M, Mangalathillam S. Nano-based formulations of curcumin: elucidating the potential benefits and future prospects in skin cancer. Biomed Mater 2023; 18:052008. [PMID: 37582394 DOI: 10.1088/1748-605x/acf0af] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Accepted: 08/15/2023] [Indexed: 08/17/2023]
Abstract
Skin cancer refers to any malignant lesions that occur in the skin and are observed predominantly in populations of European descent. Conventional treatment modalities such as excision biopsy, chemotherapy, radiotherapy, immunotherapy, electrodesiccation, and photodynamic therapy (PDT) induce several unintended side effects which affect a patient's quality of life and physical well-being. Therefore, spice-derived nutraceuticals like curcumin, which are well tolerated, less expensive, and relatively safe, have been considered a promising agent for skin cancer treatment. Curcumin, a chemical constituent extracted from the Indian spice, turmeric, and its analogues has been used in various mammalian cancers including skin cancer. Curcumin has anti-neoplastic activity by triggering the process of apoptosis and preventing the multiplication and infiltration of the cancer cells by inhibiting some signaling pathways and thus subsequently preventing the process of carcinogenesis. Curcumin is also a photosensitizer and has been used in PDT. The major limitations associated with curcumin are poor bioavailability, instability, limited permeation into the skin, and lack of solubility in water. This will constrain the use of curcumin in clinical settings. Hence, developing a proper formulation that can ideally release curcumin to its targeted site is important. So, several nanoformulations based on curcumin have been established such as nanogels, nanoemulsions, nanofibers, nanopatterned films, nanoliposomes and nanoniosomes, nanodisks, and cyclodextrins. The present review mainly focuses on curcumin and its analogues as therapeutic agents for treating different types of skin cancers. The significance of using various nanoformulations as well non-nanoformulations loaded with curcumin as an effective treatment modality for skin cancer is also emphasized.
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Affiliation(s)
- Chameli Ratan
- Amrita School of Pharmacy, Amrita Institute of Medical Sciences and Research Centre, Amrita Vishwa Vidyapeetham, Kochi, 682041 Kerala, India
| | - Arya Mangalath Arian
- Amrita School of Pharmacy, Amrita Institute of Medical Sciences and Research Centre, Amrita Vishwa Vidyapeetham, Kochi, 682041 Kerala, India
| | - Rajalakshmi Rajendran
- Amrita School of Pharmacy, Amrita Institute of Medical Sciences and Research Centre, Amrita Vishwa Vidyapeetham, Kochi, 682041 Kerala, India
| | - Rangasamy Jayakumar
- Polymeric Biomaterials Lab, School of Nanosciences and Molecular Medicine, Amrita Vishwa Vidyapeetham, Kochi, 682041 Kerala, India
| | - Mar Masson
- Faculty of Pharmaceutical Sciences, School of Health Sciences, University of Iceland, Hofsvallagata 53, IS-107, Reykjavík, Iceland
| | - Sabitha Mangalathillam
- Amrita School of Pharmacy, Amrita Institute of Medical Sciences and Research Centre, Amrita Vishwa Vidyapeetham, Kochi, 682041 Kerala, India
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3
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Silva-Pilipich N, Covo-Vergara Á, Vanrell L, Smerdou C. Checkpoint blockade meets gene therapy: Opportunities to improve response and reduce toxicity. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2023; 379:43-86. [PMID: 37541727 DOI: 10.1016/bs.ircmb.2023.05.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/06/2023]
Abstract
Immune checkpoint inhibitors (ICIs) based on monoclonal antibodies represent a breakthrough for the treatment of cancer. However, their efficacy varies among tumor types and patients, and they can lead to adverse effects due to on-target/off-tumor activity, since they are administered systemically at high doses. An alternative and attractive approach for the delivery of ICIs is the use of gene therapy vectors able to express them in vivo. This review focuses on the most recent studies using viral vectors able to express ICIs locally or systemically in preclinical models of cancer. These vectors include non-replicating viruses, oncolytic viruses able to propagate specifically in tumor cells and destroy them, and self-amplifying RNA vectors, armed with different formats of antibodies against immune checkpoints. Non-replicating vectors usually lead to long-term ICI expression, potentially eliminating the need for repeated administration. Vectors with replication capacity, although they have a shorter window of expression, can induce inflammation which enhances the antitumor effect. Finally, these engineered vectors can be used in combination with other immunostimulatory molecules or with CAR-T cells, further boosting the antitumor immune responses.
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Affiliation(s)
- Noelia Silva-Pilipich
- Division of Gene Therapy and Regulation of Gene Expression, Cima Universidad de Navarra, Instituto de Investigación Sanitaria de Navarra (IdISNA), and CCUN, Pamplona, Spain.
| | - Ángela Covo-Vergara
- Division of Gene Therapy and Regulation of Gene Expression, Cima Universidad de Navarra, Instituto de Investigación Sanitaria de Navarra (IdISNA), and CCUN, Pamplona, Spain
| | - Lucía Vanrell
- Facultad de Ingeniería, Universidad ORT Uruguay, Montevideo, Uruguay; Nanogrow Biotech, Montevideo, Uruguay
| | - Cristian Smerdou
- Division of Gene Therapy and Regulation of Gene Expression, Cima Universidad de Navarra, Instituto de Investigación Sanitaria de Navarra (IdISNA), and CCUN, Pamplona, Spain.
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Expression and Prognostic Value of CD80 and CD86 in the Tumor Microenvironment of Newly Diagnosed Glioblastoma. Can J Neurol Sci 2023; 50:234-242. [PMID: 35022089 DOI: 10.1017/cjn.2022.5] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND Strategies to modulate the tumor microenvironment (TME) have opened new therapeutic avenues with dramatic yet heterogeneous intertumoral efficacy in multiple cancers, including glioblastomas (GBMs). Therefore, investigating molecular actors of TME may help understand the interactions between tumor cells and TME. Immune checkpoint proteins such as a Cluster of Differentiation 80 (CD80) and CD86 are expressed on the surface of tumor cells and infiltrative tumor lymphocytes. However, their expression and prognostic value in GBM microenvironment are still unclear. METHODS In this study, we investigated, in a retrospective local discovery cohort and a validation TCGA dataset, expression of CD80 and CD86 at mRNA level and their prognostic significance in response to standard of care. Furthermore, CD80 and CD86 at the protein level were investigated in the discovery cohort. RESULTS Both CD80 and CD86 are expressed heterogeneously in the TME at mRNA and protein levels. In a univariate analysis, the mRNA expression of CD80 and CD86 was not significantly correlated with OS in both local OncoNeuroTek dataset and TCGA datasets. CD80 and CD86 mRNA high expression was significantly associated with shorter progression free survival (PFS) (p < 0.05). These findings were validated using the TCGA cohort; higher CD80 and CD86 expressions were correlated with shorter PFS (p < 0.05). In multivariate analysis, CD86 mRNA expression was an independent prognostic factor for PFS in the TCGA dataset only (p < 0.05). CONCLUSION CD86 could be used as a potential biomarker for the prognosis of GBM patients treated with immunotherapy; however, additional studies are needed to validate these findings.
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Zou H, Mou X, Zhu B. Combining of Oncolytic Virotherapy and Other Immunotherapeutic Approaches in Cancer: A Powerful Functionalization Tactic. GLOBAL CHALLENGES (HOBOKEN, NJ) 2023; 7:2200094. [PMID: 36618103 PMCID: PMC9818137 DOI: 10.1002/gch2.202200094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Revised: 09/04/2022] [Indexed: 06/17/2023]
Abstract
Oncolytic viruses have found a good place in the treatment of cancer. Administering oncolytic viruses directly or by applying genetic changes can be effective in cancer treatment through the lysis of tumor cells and, in some cases, by inducing immune system responses. Moreover, oncolytic viruses induce antitumor immune responses via releasing tumor antigens in the tumor microenvironment (TME) and affect tumor cell growth and metabolism. Despite the success of virotherapy in cancer therapies, there are several challenges and limitations, such as immunosuppressive TME, lack of effective penetration into tumor tissue, low efficiency in hypoxia, antiviral immune responses, and off-targeting. Evidence suggests that oncolytic viruses combined with cancer immunotherapy-based methods such as immune checkpoint inhibitors and adoptive cell therapies can effectively overcome these challenges. This review summarizes the latest data on the use of oncolytic viruses for the treatment of cancer and the challenges of this method. Additionally, the effectiveness of mono, dual, and triple therapies using oncolytic viruses and other anticancer agents has been discussed based on the latest findings.
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Affiliation(s)
- Hai Zou
- Department of Critical CareFudan University Shanghai Cancer CenterShanghai200032China
- Department of OncologyShanghai Medical CollegeFudan UniversityShanghai200032China
| | - Xiao‐Zhou Mou
- General SurgeryCancer CenterDepartment of Hepatobiliary and Pancreatic Surgery and Minimally Invasive SurgeryZhejiang Provincial People's Hospital (Affiliated People's Hospital of Hangzhou Medical College)Hangzhou310014China
- Key Laboratory of Cancer Molecular Diagnosis and Individualized Therapy of Zhejiang ProvinceZhejiang Provincial People's HospitalAffiliated People's Hospital of Hangzhou Medical CollegeHangzhou310014China
| | - Biao Zhu
- Department of Critical CareFudan University Shanghai Cancer CenterShanghai200032China
- Department of OncologyShanghai Medical CollegeFudan UniversityShanghai200032China
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6
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Koukourakis IM, Tiniakos D, Kouloulias V, Zygogianni A. The molecular basis of immuno-radiotherapy. Int J Radiat Biol 2022; 99:715-736. [PMID: 36383201 DOI: 10.1080/09553002.2023.2144960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
PURPOSE Radiotherapy (RT) and immunotherapy are powerful anti-tumor treatment modalities. Experimental research has demonstrated an important interplay between the cytotoxic effects of RT and the immune system. This systematic review provides an overview of the basics of anti-tumor immunity and focuses on the mechanisms underlying the interplay between RT and immune anti-tumor response that set the molecular basis of immuno-RT. CONCLUSIONS An 'immunity acquired equilibrium' mimicking tumor dormancy can be achieved post-irradiation treatment, with the balance shifted toward tumor eradication or regrowth when immune cells' cytotoxic effects or cancer proliferation rate prevail, respectively. RT has both immunosuppressive and immune-enhancing properties. The latter effect is also known as radio-vaccination. Its mechanisms involve up- or down-regulation of membrane molecules, such as PD-L1, HLA-class-I, CD80/86, CD47, and Fas/CD95, that play a vital role in immune checkpoint pathways and increased cytokine expression (e.g. INFα,β,γ, IL1,2, and TNFα) by cancer or immune cells. Moreover, the interactions of radiation with the tumor microenvironment (fibroblasts, tumor-infiltrating lymphocytes, monocytes, and dendritic cells are also an important component of radio-vaccination. Thus, RT may have anti-tumor vaccine properties, whose sequels can be exploited by immunotherapy agents to treat different cancer subtypes effectively.
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Affiliation(s)
- Ioannis M. Koukourakis
- Radiation Oncology Unit, First Department of Radiology, Medical School, Aretaieion Hospital, National and Kapodistrian University of Athens (NKUOA), Athens, Greece
| | - Dina Tiniakos
- Department of Pathology, Aretaieion University Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
- Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle Upon Tyne, UK
| | - Vassilis Kouloulias
- Radiation Oncology Unit, Second Department of Radiology, School of Medicine, Rimini 1, National and Kapodistrian University of Athens, Athens, Greece
| | - Anna Zygogianni
- Radiation Oncology Unit, First Department of Radiology, Medical School, Aretaieion Hospital, National and Kapodistrian University of Athens (NKUOA), Athens, Greece
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7
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Zaman R, Islam RA, Chowdhury EH. Evolving therapeutic proteins to precisely kill cancer cells. J Control Release 2022; 351:779-804. [DOI: 10.1016/j.jconrel.2022.09.066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Revised: 09/27/2022] [Accepted: 09/29/2022] [Indexed: 10/31/2022]
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8
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de Castria TB, Khalil DN, Harding JJ, O'Reilly EM, Abou-Alfa GK. Tremelimumab and durvalumab in the treatment of unresectable, advanced hepatocellular carcinoma. Future Oncol 2022; 18:3769-3782. [PMID: 36399155 DOI: 10.2217/fon-2022-0652] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Liver cancer is the third most common cause of cancer-related mortality worldwide, with over 780,000 deaths in 2018. About 90% of liver cancer cases are hepatocellular carcinoma (HCC), a prototype of inflammation-driven cancer, leading to a robust rationale for the exploration of immune therapy. Previously approved agents for first-line therapy, such as sorafenib, lenvatinib and bevacizumab combined with atezolizumab, have focused on angiogenesis. HIMALAYA was the first trial to demonstrate the benefit of dual immune checkpoint inhibitors, representing a new treatment option in this scenario.
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Affiliation(s)
| | - Danny N Khalil
- Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA.,Weill Medical College at Cornell University, New York, NY 10021, USA
| | - James J Harding
- Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA.,Weill Medical College at Cornell University, New York, NY 10021, USA
| | - Eileen M O'Reilly
- Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA.,Weill Medical College at Cornell University, New York, NY 10021, USA
| | - Ghassan K Abou-Alfa
- Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA.,Weill Medical College at Cornell University, New York, NY 10021, USA
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9
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Ding J, Zheng Y, Wang G, Zheng J, Chai D. The performance and perspectives of dendritic cell vaccines modified by immune checkpoint inhibitors or stimulants. Biochim Biophys Acta Rev Cancer 2022; 1877:188763. [PMID: 35872287 DOI: 10.1016/j.bbcan.2022.188763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Revised: 07/05/2022] [Accepted: 07/18/2022] [Indexed: 11/30/2022]
Abstract
Therapeutic dendritic cell (DC) vaccines stimulate the elimination of tumor cells by the immune system. However, while antigen-specific T cell responses induced by DC vaccines are commonly observed, the clinical response rate is relatively poor, necessitating vaccine optimization. There is evidence that the suppression of DC function by immune checkpoints hinders the anti-tumor immune responses mediated by DC vaccines, ultimately leading to the immune escape of the tumor cells. The use of immune checkpoint inhibitors (ICIs) and immune checkpoint activators (ICAs) has extended the immunotherapeutic range. It is known that both inhibitory and stimulatory checkpoint molecules are expressed by most DC subsets and can thus be used to manipulate the effectiveness of DC vaccines. Such manipulation has been investigated using strategies such as chemotherapy, agonistic or antagonistic antibodies, siRNA, shRNA, CRISPR-Cas9, soluble antibodies, lentiviruses, and adenoviruses to maximize the efficacy of DC vaccines. Thus, a deeper understanding of immune checkpoints may assist in the development of improved DC vaccines. Here, we review the actions of various ICIs or ICAs shown by preclinical studies, as well as their potential application in DC vaccines. New therapeutic interventional strategies for blocking and stimulating immune checkpoint molecules in DCs are also described in detail.
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Affiliation(s)
- Jiage Ding
- Cancer Institute, Xuzhou Medical University, Xuzhou, Jiangsu 221002, PR China; Center of Clinical Oncology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221002, PR China
| | - Yanyan Zheng
- Cancer Institute, Xuzhou Medical University, Xuzhou, Jiangsu 221002, PR China; Center of Clinical Oncology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221002, PR China
| | - Gang Wang
- Cancer Institute, Xuzhou Medical University, Xuzhou, Jiangsu 221002, PR China; Center of Clinical Oncology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221002, PR China; Jiangsu Center for the Collaboration and Innovation of Cancer Biotherapy, Cancer Institute, Xuzhou Medical University, Xuzhou, Jiangsu 221002, PR China.
| | - Junnian Zheng
- Center of Clinical Oncology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221002, PR China; Jiangsu Center for the Collaboration and Innovation of Cancer Biotherapy, Cancer Institute, Xuzhou Medical University, Xuzhou, Jiangsu 221002, PR China.
| | - Dafei Chai
- Cancer Institute, Xuzhou Medical University, Xuzhou, Jiangsu 221002, PR China; Center of Clinical Oncology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221002, PR China; Jiangsu Center for the Collaboration and Innovation of Cancer Biotherapy, Cancer Institute, Xuzhou Medical University, Xuzhou, Jiangsu 221002, PR China.
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10
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Liu Y, Geng Y, Yue B, Lo PC, Huang J, Jin H. Injectable Hydrogel as a Unique Platform for Antitumor Therapy Targeting Immunosuppressive Tumor Microenvironment. Front Immunol 2022; 12:832942. [PMID: 35111169 PMCID: PMC8801935 DOI: 10.3389/fimmu.2021.832942] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Accepted: 12/27/2021] [Indexed: 12/19/2022] Open
Abstract
Cancer immunotherapy can boost the immune response of patients to eliminate tumor cells and suppress tumor metastasis and recurrence. However, immunotherapy resistance and the occurrence of severe immune-related adverse effects are clinical challenges that remain to be addressed. The tumor microenvironment plays a crucial role in the therapeutic efficacy of cancer immunotherapy. Injectable hydrogels have emerged as powerful drug delivery platforms offering good biocompatibility and biodegradability, minimal invasion, convenient synthesis, versatility, high drug-loading capacity, controlled drug release, and low toxicity. In this review, we summarize the application of injectable hydrogels as a unique platform for targeting the immunosuppressive tumor microenvironment.
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Affiliation(s)
- Yushuai Liu
- Department of Ophthalmology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yuanyuan Geng
- College of Biomedicine and Health and College of Life Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Beilei Yue
- College of Biomedicine and Health and College of Life Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Pui-Chi Lo
- Department of Biomedical Sciences, City University of Hong Kong, Kowloon, Hong Kong, SAR China
| | - Jing Huang
- College of Biomedicine and Health and College of Life Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Honglin Jin
- College of Biomedicine and Health and College of Life Science and Technology, Huazhong Agricultural University, Wuhan, China
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11
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Puhr HC, Ilhan-Mutlu A. Immunotherapy for Gastroesophageal Tumors: Is There Still Hope for Efficacy? Curr Cancer Drug Targets 2022; 22:651-666. [DOI: 10.2174/1568009622666220117101105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 01/11/2021] [Accepted: 01/25/2021] [Indexed: 11/22/2022]
Abstract
Abstract:
Immunotherapy represents one of the biggest break-throughs of the 21st century and redefined modern cancer treatment. Despite this new approach changed the treatment paradigm in various cancer entities including lung and head-and-neck cancer, the efficacy of these treatment regimens varies in different patient subgroups and so far, failed to meet these high expectations in gastroesophageal cancer patients. This review discusses new treatment approaches concerning immunotherapy in gastroesophageal cancer patients and sheds some light on ongoing trials and new treatment combinations.
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Affiliation(s)
| | - Aysegul Ilhan-Mutlu
- Department of Medicine I, Division of Oncology, Medical University of Vienna
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12
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Yang H, Kuo YH, Smith ZI, Spangler J. Targeting cancer metastasis with antibody therapeutics. WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY 2021; 13:e1698. [PMID: 33463090 DOI: 10.1002/wnan.1698] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 12/23/2020] [Accepted: 12/28/2020] [Indexed: 12/12/2022]
Abstract
Cancer metastasis, the spread of disease from a primary to a distal site through the circulatory or lymphatic systems, accounts for over 90% of all cancer related deaths. Despite significant progress in the field of cancer therapy in recent years, mortality rates remain dramatically higher for patients with metastatic disease versus those with local or regional disease. Although there is clearly an urgent need to develop drugs that inhibit cancer spread, the overwhelming majority of anticancer therapies that have been developed to date are designed to inhibit tumor growth but fail to address the key stages of the metastatic process: invasion, intravasation, circulation, extravasation, and colonization. There is growing interest in engineering targeted therapeutics, such as antibody drugs, that inhibit various steps in the metastatic cascade. We present an overview of antibody therapeutic approaches, both in the pipeline and in the clinic, that disrupt the essential mechanisms that underlie cancer metastasis. These therapies include classes of antibodies that indirectly target metastasis, including anti-integrin, anticadherin, and immune checkpoint blocking antibodies, as well as monoclonal and bispecific antibodies that are specifically designed to interrupt disease dissemination. Although few antimetastatic antibodies have achieved clinical success to date, there are many promising candidates in various stages of development, and novel targets and approaches are constantly emerging. Collectively, these efforts will enrich our understanding of the molecular drivers of metastasis, and the new strategies that arise promise to have a profound impact on the future of cancer therapeutic development. This article is categorized under: Therapeutic Approaches and Drug Discovery > Nanomedicine for Oncologic Disease.
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Affiliation(s)
- Huilin Yang
- Department of Chemical & Biomolecular Engineering, Johns Hopkins University, Baltimore, Maryland, USA
| | - Yun-Huai Kuo
- Department of Chemical & Biomolecular Engineering, Johns Hopkins University, Baltimore, Maryland, USA
| | - Zion I Smith
- Department of Chemical & Biomolecular Engineering, Johns Hopkins University, Baltimore, Maryland, USA
| | - Jamie Spangler
- Department of Chemical & Biomolecular Engineering, Johns Hopkins University, Baltimore, Maryland, USA.,Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.,Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.,Bloomberg-Kimmel Institute for Cancer Immunotherapy, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.,Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.,Oncology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
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13
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Antibody-Based Immunotherapy: Alternative Approaches for the Treatment of Metastatic Melanoma. Biomedicines 2020; 8:biomedicines8090327. [PMID: 32899183 PMCID: PMC7555584 DOI: 10.3390/biomedicines8090327] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 08/28/2020] [Accepted: 09/01/2020] [Indexed: 12/13/2022] Open
Abstract
Melanoma is the least common form of skin cancer and is associated with the highest mortality. Where melanoma is mostly unresponsive to conventional therapies (e.g., chemotherapy), BRAF inhibitor treatment has shown improved therapeutic outcomes. Photodynamic therapy (PDT) relies on a light-activated compound to produce death-inducing amounts of reactive oxygen species (ROS). Their capacity to selectively accumulate in tumor cells has been confirmed in melanoma treatment with some encouraging results. However, this treatment approach has not reached clinical fruition for melanoma due to major limitations associated with the development of resistance and subsequent side effects. These adverse effects might be bypassed by immunotherapy in the form of antibody–drug conjugates (ADCs) relying on the ability of monoclonal antibodies (mAbs) to target specific tumor-associated antigens (TAAs) and to be used as carriers to specifically deliver cytotoxic warheads into corresponding tumor cells. Of late, the continued refinement of ADC therapeutic efficacy has given rise to photoimmunotherapy (PIT) (a light-sensitive compound conjugated to mAbs), which by virtue of requiring light activation only exerts its toxic effect on light-irradiated cells. As such, this review aims to highlight the potential clinical benefits of various armed antibody-based immunotherapies, including PDT, as alternative approaches for the treatment of metastatic melanoma.
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14
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Glisson BS, Leidner RS, Ferris RL, Powderly J, Rizvi NA, Keam B, Schneider R, Goel S, Ohr JP, Burton J, Zheng Y, Eck S, Gribbin M, Streicher K, Townsley DM, Patel SP. Safety and Clinical Activity of MEDI0562, a Humanized OX40 Agonist Monoclonal Antibody, in Adult Patients with Advanced Solid Tumors. Clin Cancer Res 2020; 26:5358-5367. [PMID: 32816951 DOI: 10.1158/1078-0432.ccr-19-3070] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 03/06/2020] [Accepted: 07/30/2020] [Indexed: 11/16/2022]
Abstract
PURPOSE Immune checkpoint blockade has demonstrated clinical benefits across multiple solid tumor types; however, resistance and relapse often occur. New immunomodulatory targets, which are highly expressed in activated immune cells, are needed. MEDI0562, an agonistic humanized mAb, specifically binds to the costimulatory molecule OX40. This first-in-human study evaluated MEDI0562 in adults with advanced solid tumors. PATIENTS AND METHODS In this phase I, multicenter, open-label, single-arm, dose-escalation (3+3 design) study, patients received 0.03, 0.1, 0.3, 1.0, 3.0, or 10 mg/kg MEDI0562 through intravenous infusion every 2 weeks, until confirmed disease progression or unacceptable toxicity. The primary objective evaluated safety and tolerability. Secondary endpoints included antitumor activity, pharmacokinetics, immunogenicity, and pharmacodynamics. RESULTS In total, 55 patients received ≥1 dose of MEDI0562 and were included in the analysis. The most common tumor type was squamous cell carcinoma of the head and neck (47%). Median duration of treatment was 10 weeks (range, 2-48 weeks). Treatment-related adverse events (TRAEs) occurred in 67% of patients, most commonly fatigue (31%) and infusion-related reactions (14%). Grade 3 TRAEs occurred in 14% of patients with no apparent dose relationship; no TRAEs resulted in death. Two patients had immune-related partial responses per protocol and 44% had stable disease. MEDI0562 induced increased Ki67+ CD4+ and CD8+ memory T-cell proliferation in the periphery and decreased intratumoral OX40+ FOXP3+ cells. CONCLUSIONS MEDI0562 was safely administered at doses up to 10 mg/kg in heavily pretreated patients. On-target pharmacodynamic effects were suggested in this setting. Further evaluation with immune checkpoint inhibitors is ongoing.
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Affiliation(s)
- Bonnie S Glisson
- The University of Texas MD Anderson Cancer Center, Houston, Texas, USA.
| | - Rom S Leidner
- EACRI - Providence Cancer Center, Portland, Oregon, USA
| | | | - John Powderly
- Carolina BioOncology Institute, Huntersville, North Carolina, USA
| | - Naiyer A Rizvi
- Columbia University Medical Center, New York, New York, USA
| | - Bhumsuk Keam
- Seoul National University Hospital, Seoul, South Korea
| | - Reva Schneider
- Mary Crowley Cancer Research - Medical City Dallas, Dallas, Texas, USA
| | - Sanjay Goel
- Montefiore Einstein Cancer Center, Bronx, New York, USA
| | - James P Ohr
- UPMC Hillman Cancer Center, Pittsburgh, Pennsylvania, USA
| | | | | | - Steven Eck
- AstraZeneca, Gaithersburg, Maryland, USA
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15
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Chung CK, Fransen MF, van der Maaden K, Campos Y, García-Couce J, Kralisch D, Chan A, Ossendorp F, Cruz LJ. Thermosensitive hydrogels as sustained drug delivery system for CTLA-4 checkpoint blocking antibodies. J Control Release 2020; 323:1-11. [DOI: 10.1016/j.jconrel.2020.03.050] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 03/23/2020] [Accepted: 03/31/2020] [Indexed: 12/15/2022]
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16
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Sýkora D, Jindřich J, Král V, Jakubek M, Tatar A, Kejík Z, Martásek P, Zakharov S. Formaldehyde Reacts with Amino Acids and Peptides with a Potential Role in Acute Methanol Intoxication. J Anal Toxicol 2020; 44:880-885. [DOI: 10.1093/jat/bkaa039] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2019] [Revised: 03/09/2020] [Accepted: 04/07/2020] [Indexed: 12/12/2022] Open
Abstract
Abstract
Methanol, an aliphatic alcohol widely used in the industry, causes acute and chronic intoxications associated with severe long-term health damage, including permanent visual impairment, brain damage, mainly necrosis of the basal ganglia and high mortality due to cancer. However, the role of formaldehyde, an intermediate metabolite of methanol oxidation, in methanol toxicity remains unclear. Thus, we studied the reactivity of several amino acids and peptides in the presence of formaldehyde by identifying products by direct infusion electrospray high-resolution mass spectrometry (MS) and matrix-assisted laser desorption-ionization MS. Cysteine, homocysteine and two peptides, CG and CGAG, provided cyclic products with a +12 amu mass shift with respect to the original compounds. The proposed structures of the products were confirmed by high-resolution tandem MS. Moreover, the formation of the products with +12 amu mass shift was also shown for two biologically relevant peptides, fragments of ipilimumab, which is a human IgG1 monoclonal antibody against cytotoxic T-lymphocyte-associated protein 4. Overall, our experimental results indicate that formaldehyde reacts with some amino acids and peptides, yielding covalently modified structures. Such chemical modifications may induce undesirable changes in the properties and function of vital biomolecules (e.g., hormones, enzymes) and consequently pathogenesis.
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Affiliation(s)
- David Sýkora
- University of Chemistry and Technology Prague, Department of Analytical Chemistry, Technicka 5, 166 28 Prague, Czech Republic
| | - Jindřich Jindřich
- Charles University, Faculty of Science, Department of Organic Chemistry, Hlavova 8, 128 43 Prague, Czech Republic
| | - Vladimír Král
- University of Chemistry and Technology Prague, Department of Analytical Chemistry, Technicka 5, 166 28 Prague, Czech Republic
- BIOCEV, Charles University, First Faculty of Medicine, Katerinská 32, 121 08 Prague, Czech Republic
| | - Milan Jakubek
- University of Chemistry and Technology Prague, Department of Analytical Chemistry, Technicka 5, 166 28 Prague, Czech Republic
- BIOCEV, Charles University, First Faculty of Medicine, Katerinská 32, 121 08 Prague, Czech Republic
- Charles University, First Faculty of Medicine and General University Hospital, Department of Pediatrics and Adolescent Medicine, Katerinská 32, 121 08 Prague, Czech Republic
| | - Ameneh Tatar
- University of Chemistry and Technology Prague, Department of Analytical Chemistry, Technicka 5, 166 28 Prague, Czech Republic
- Charles University, First Faculty of Medicine and General University Hospital, Department of Pediatrics and Adolescent Medicine, Katerinská 32, 121 08 Prague, Czech Republic
| | - Zdeněk Kejík
- University of Chemistry and Technology Prague, Department of Analytical Chemistry, Technicka 5, 166 28 Prague, Czech Republic
- BIOCEV, Charles University, First Faculty of Medicine, Katerinská 32, 121 08 Prague, Czech Republic
- Charles University, First Faculty of Medicine and General University Hospital, Department of Pediatrics and Adolescent Medicine, Katerinská 32, 121 08 Prague, Czech Republic
| | - Pavel Martásek
- Charles University, First Faculty of Medicine and General University Hospital, Department of Pediatrics and Adolescent Medicine, Katerinská 32, 121 08 Prague, Czech Republic
| | - Sergey Zakharov
- Charles University, First Faculty of Medicine and General University Hospital, Department of Occupational Medicine, Na Bojisti 1, 120 00 Prague, Czech Republic
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17
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Development of oncolytic virotherapy: from genetic modification to combination therapy. Front Med 2020; 14:160-184. [PMID: 32146606 PMCID: PMC7101593 DOI: 10.1007/s11684-020-0750-4] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Accepted: 01/14/2020] [Indexed: 12/17/2022]
Abstract
Oncolytic virotherapy (OVT) is a novel form of immunotherapy using natural or genetically modified viruses to selectively replicate in and kill malignant cells. Many genetically modified oncolytic viruses (OVs) with enhanced tumor targeting, antitumor efficacy, and safety have been generated, and some of which have been assessed in clinical trials. Combining OVT with other immunotherapies can remarkably enhance the antitumor efficacy. In this work, we review the use of wild-type viruses in OVT and the strategies for OV genetic modification. We also review and discuss the combinations of OVT with other immunotherapies.
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18
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Yip H, Haupt C, Maresh G, Zhang X, Li L. Humanized mice for immune checkpoint blockade in human solid tumors. AMERICAN JOURNAL OF CLINICAL AND EXPERIMENTAL UROLOGY 2019; 7:313-320. [PMID: 31763362 PMCID: PMC6872471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Accepted: 10/13/2019] [Indexed: 06/10/2023]
Abstract
Immunotherapy, specifically research involving immune checkpoint blockers (ICBs), has become a popular trend in anticancer research over the last three years. Due to the difficulties and often poor translation of results from in-vitro models, in-vivo models have become more relevant than ever. With the discovery of NOD, Prkdcscid , and Il2rγ-/- mutations, patient-derived xenograft (PDX) mouse models were developed, providing an ideal environment for ICBs testing. By implanting a PDX with either CD34+ or peripheral blood mononuclear cells, we can create a human immune system capable of mounting a response against tumor burden. These animal models are currently being used to study molecular mechanisms, test drug efficacy, and trial drug combinations. Others have found use for these humanized mouse models as surrogates to represent otherwise uncommon diseases. Limitations remain with regards to what the models are capable of, but in the short amount of time between the development of these models and heightened interest in ICBs, these mice have already shown utility for future developments in the field of immunotherapy.
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Affiliation(s)
- Henry Yip
- UQ-Ochsner Clinical School, Institute for Translational Research, Ochsner Clinic Foundation New Orleans, LA, USA
| | - Carl Haupt
- UQ-Ochsner Clinical School, Institute for Translational Research, Ochsner Clinic Foundation New Orleans, LA, USA
| | - Grace Maresh
- UQ-Ochsner Clinical School, Institute for Translational Research, Ochsner Clinic Foundation New Orleans, LA, USA
| | - Xin Zhang
- UQ-Ochsner Clinical School, Institute for Translational Research, Ochsner Clinic Foundation New Orleans, LA, USA
| | - Li Li
- UQ-Ochsner Clinical School, Institute for Translational Research, Ochsner Clinic Foundation New Orleans, LA, USA
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19
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Sabharwal SS, Rosen DB, Grein J, Tedesco D, Joyce-Shaikh B, Ueda R, Semana M, Bauer M, Bang K, Stevenson C, Cua DJ, Zúñiga LA. GITR Agonism Enhances Cellular Metabolism to Support CD8+ T-cell Proliferation and Effector Cytokine Production in a Mouse Tumor Model. Cancer Immunol Res 2018; 6:1199-1211. [DOI: 10.1158/2326-6066.cir-17-0632] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Revised: 05/11/2018] [Accepted: 08/23/2018] [Indexed: 11/16/2022]
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20
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Olver IN. Improved relative survival of patients with B-cell non-Hodgkin lymphoma in Queensland, 1993-2012. Med J Aust 2018; 209:157-158. [PMID: 30107771 DOI: 10.5694/mja18.00626] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Accepted: 06/27/2018] [Indexed: 12/15/2022]
Affiliation(s)
- Ian N Olver
- Cancer Research Institute, University of South Australia, Adelaide, SA
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21
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Zhu HF, Li Y. Small-Molecule Targets in Tumor Immunotherapy. NATURAL PRODUCTS AND BIOPROSPECTING 2018; 8:297-301. [PMID: 29974338 PMCID: PMC6102179 DOI: 10.1007/s13659-018-0177-7] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Accepted: 07/02/2018] [Indexed: 06/08/2023]
Abstract
Cancer immunotherapy has been widely recognized as a powerful approach to fight cancers. To date, over 50 phase III trials in cancer immunotherapy are in progress. Among the many immunotherapy approaches, immune checkpoint therapy has attracted considerable attention. The reported clinical success of targeting the T cell immune checkpoint receptors PD-1 or CTLA4 by antibodies blockade in advanced stages of cancers has demonstrated the importance of immune modulation. But antibodies-based immunotherapy confronted with some disadvantages, such as immunogenicity, stability, membrane permeability, and production cost. Therefore, alternative approaches including small-molecule-regulated immune response are being introduced. In this review, we focused on some of the key intracellular pathways where small-molecule therapeutic is potential and attractive, which highlights the great potential of natural products in this field.
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Affiliation(s)
- Hui-Fang Zhu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, 132# Lanhei Road, Kunming, 650201, Yunnan, People's Republic of China
- University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China
| | - Yan Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, 132# Lanhei Road, Kunming, 650201, Yunnan, People's Republic of China.
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22
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Corraliza-Gorjón I, Somovilla-Crespo B, Santamaria S, Garcia-Sanz JA, Kremer L. New Strategies Using Antibody Combinations to Increase Cancer Treatment Effectiveness. Front Immunol 2017; 8:1804. [PMID: 29312320 PMCID: PMC5742572 DOI: 10.3389/fimmu.2017.01804] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Accepted: 11/30/2017] [Indexed: 12/14/2022] Open
Abstract
Antibodies have proven their high value in antitumor therapy over the last two decades. They are currently being used as the first-choice to treat some of the most frequent metastatic cancers, like HER2+ breast cancers or colorectal cancers, currently treated with trastuzumab (Herceptin) and bevacizumab (Avastin), respectively. The impressive therapeutic success of antibodies inhibiting immune checkpoints has extended the use of therapeutic antibodies to previously unanticipated tumor types. These anti-immune checkpoint antibodies allowed the cure of patients devoid of other therapeutic options, through the recovery of the patient’s own immune response against the tumor. In this review, we describe how the antibody-based therapies will evolve, including the use of antibodies in combinations, their main characteristics, advantages, and how they could contribute to significantly increase the chances of success in cancer therapy. Indeed, novel combinations will consist of mixtures of antibodies against either different epitopes of the same molecule or different targets on the same tumor cell; bispecific or multispecific antibodies able of simultaneously binding tumor cells, immune cells or extracellular molecules; immunomodulatory antibodies; antibody-based molecules, including fusion proteins between a ligand or a receptor domain and the IgG Fab or Fc fragments; autologous or heterologous cells; and different formats of vaccines. Through complementary mechanisms of action, these combinations could contribute to elude the current limitations of a single antibody which recognizes only one particular epitope. These combinations may allow the simultaneous attack of the cancer cells by using the help of the own immune cells and exerting wider therapeutic effects, based on a more specific, fast, and robust response, trying to mimic the action of the immune system.
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Affiliation(s)
- Isabel Corraliza-Gorjón
- Department of Immunology and Oncology, Centro Nacional de Biotecnologia (CNB-CSIC), Madrid, Spain
| | - Beatriz Somovilla-Crespo
- Department of Immunology and Oncology, Centro Nacional de Biotecnologia (CNB-CSIC), Madrid, Spain
| | - Silvia Santamaria
- Department of Cellular and Molecular Medicine, Centro de Investigaciones Biologicas (CIB-CSIC), Madrid, Spain
| | - Jose A Garcia-Sanz
- Department of Cellular and Molecular Medicine, Centro de Investigaciones Biologicas (CIB-CSIC), Madrid, Spain
| | - Leonor Kremer
- Department of Immunology and Oncology, Centro Nacional de Biotecnologia (CNB-CSIC), Madrid, Spain
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23
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Gambichler T, Brown V, Steuke AK, Schmitz L, Stockfleth E, Susok L. Baseline laboratory parameters predicting clinical outcome in melanoma patients treated with ipilimumab: a single-centre analysis. J Eur Acad Dermatol Venereol 2017; 32:972-977. [DOI: 10.1111/jdv.14629] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Accepted: 09/22/2017] [Indexed: 12/19/2022]
Affiliation(s)
- T. Gambichler
- Skin Cancer Center of the Department of Dermatology; Ruhr-University Bochum; Bochum Germany
| | - V. Brown
- Skin Cancer Center of the Department of Dermatology; Ruhr-University Bochum; Bochum Germany
| | - A.-K. Steuke
- Skin Cancer Center of the Department of Dermatology; Ruhr-University Bochum; Bochum Germany
| | - L. Schmitz
- Skin Cancer Center of the Department of Dermatology; Ruhr-University Bochum; Bochum Germany
| | - E. Stockfleth
- Skin Cancer Center of the Department of Dermatology; Ruhr-University Bochum; Bochum Germany
| | - L. Susok
- Skin Cancer Center of the Department of Dermatology; Ruhr-University Bochum; Bochum Germany
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24
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Kikuchi T, Shimizu H, Akiyama Y, Taniguchi S. In situ delivery and production system of trastuzumab scFv with Bifidobacterium. Biochem Biophys Res Commun 2017; 493:306-312. [PMID: 28890351 DOI: 10.1016/j.bbrc.2017.09.026] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Accepted: 09/06/2017] [Indexed: 02/02/2023]
Abstract
A monoclonal antibody targeting human epidermal growth factor receptor-2 (HER2), trastuzumab has become a standard treatment for HER2-positive breast cancer. Recent advancements in antibody engineering have enabled the efficient generation of the trastuzumab single-chain variable fragment (scFv). In this study, we genetically engineered Bifidobacterium, a bacterial strain shown to accumulate safely and selectively in hypoxic tumor sites by intravenous (iv) injection, to express and secrete the trastuzumab scFv. The recombinant scFv bound to cell surface HER2 and inhibited in vitro growth of HER2-positive human cancer cells. Moreover, iv-injected recombinant bacteria specifically localized and secreted trastuzumab scFv in xenografted human HER2-positive tumors and consequently inhibited tumor growth. The development and results of this novel in situ delivery and production system for trastuzumab scFv with Bifidobacterium represents a promising avenue for future application in cancer treatment.
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Affiliation(s)
- Takeshi Kikuchi
- Dept. of Molecular Oncology, Shinshu University Graduate School of Medicine, Matsumoto, Japan
| | - Hitomi Shimizu
- Dept. of Molecular Oncology, Shinshu University Graduate School of Medicine, Matsumoto, Japan
| | - Yasuto Akiyama
- Shizuoka Cancer Center, Research Institute, Nagaizumi-cho, Japan
| | - Shun'ichiro Taniguchi
- Dept. of Molecular Oncology, Shinshu University Graduate School of Medicine, Matsumoto, Japan; Institute of Biomedical Sciences, Shinshu University, Matsumoto, Japan; Dept. of Comprehensive Cancer Therapy, Shinshu University School of Medicine, Matsumoto, Japan.
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