1
|
Anti-Gr-1 Antibody Provides Short-Term Depletion of MDSC in Lymphodepleted Mice with Active-Specific Melanoma Therapy. Vaccines (Basel) 2022; 10:vaccines10040560. [PMID: 35455309 PMCID: PMC9032646 DOI: 10.3390/vaccines10040560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Revised: 03/24/2022] [Accepted: 03/26/2022] [Indexed: 11/28/2022] Open
Abstract
Lymphodepletion, reconstitution and active-specific tumor cell vaccination (LRAST) enhances the induction of tumor-specific T cells in a murine melanoma model. Myeloid-derived suppressor cells (MDSC) may counteract the induction of tumor-reactive T cells and their therapeutic efficacy. Thus, the aim of the study was to evaluate a possible benefit of MDSC depletion using anti-Gr-1 antibodies (Ab) in combination with LRAST. Female C57BL/6 mice with 3 days established subcutaneous (s.c.) D5 melanoma were lymphodepleted with cyclophosphamide and reconstituted with naive splenocytes. Vaccination was performed with irradiated syngeneic mGM-CSF-secreting D5G6 melanoma cells. MDSC depletion was performed using anti-Gr-1 Ab (clone RB6-8C5). Induction of tumor-specific T cells derived from tumor vaccine draining lymph nodes (TVDLN) was evaluated by the amount of tumor-specific interferon (IFN)-γ release. LRAST combined with anti-Gr-1 mAb administration enhanced the induction of tumor-specific T cells in TVDLN capable of releasing IFN-γ in a tumor-specific manner. Additional anti-Gr-1 mAb administration in LRAST-treated mice delayed growth of D5 melanomas by two weeks. Furthermore, we elucidate the impact of anti-Gr-1-depleting antibodies on the memory T cell compartment. Our data indicate that standard of care treatment regimens against cancer can be improved by implementing agents, e.g., depleting antibodies, which target and eliminate MDSC.
Collapse
|
2
|
Robinson BW, Redwood AJ, Creaney J. How Our Continuing Studies of the Pre-clinical Inbred Mouse Models of Mesothelioma Have Influenced the Development of New Therapies. Front Pharmacol 2022; 13:858557. [PMID: 35431929 PMCID: PMC9008447 DOI: 10.3389/fphar.2022.858557] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Accepted: 02/24/2022] [Indexed: 11/17/2022] Open
Abstract
Asbestos-induced preclinical mouse models of mesothelioma produce tumors that are very similar to those that develop in humans and thus represent an ideal platform to study this rare, universally fatal tumor type. Our team and a number of other research groups have established such models as a stepping stone to new treatments, including chemotherapy, immunotherapy and other approaches that have been/are being translated into clinical trials. In some cases this work has led to changes in mesothelioma treatment practice and over the last 30 years these models and studies have led to trials which have improved the response rate in mesothelioma from less than 10% to over 50%. Mouse models have had a vital role in that improvement and will continue to play a key role in the future success of mesothelioma immunotherapy. In this review we focus only on these original inbred mouse models, the large number of preclinical studies conducted using them and their contribution to current and future clinical therapy for mesothelioma.
Collapse
Affiliation(s)
- Bruce W.S. Robinson
- Medicine, University of Western Australia, Perth, WA, Australia
- Institute for Respiratory Health, University of Western Australia, Perth, WA, Australia
- *Correspondence: Bruce W.S. Robinson,
| | - Alec J. Redwood
- Institute for Respiratory Health, University of Western Australia, Perth, WA, Australia
- Biomedical Science, University of Western Australia, Perth, WA, Australia
| | - Jenette Creaney
- Institute for Respiratory Health, University of Western Australia, Perth, WA, Australia
- Biomedical Science, University of Western Australia, Perth, WA, Australia
| |
Collapse
|
3
|
Gold Nanopeanuts as Prospective Support for Cisplatin in Glioblastoma Nano-Chemo-Radiotherapy. Int J Mol Sci 2020; 21:ijms21239082. [PMID: 33260340 PMCID: PMC7730046 DOI: 10.3390/ijms21239082] [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: 09/30/2020] [Revised: 11/16/2020] [Accepted: 11/25/2020] [Indexed: 02/07/2023] Open
Abstract
Herein, we propose newly designed and synthesized gold nanopeanuts (Au NPes) as supports for cisplatin (cPt) immobilization, dedicated to combined glioblastoma nano-chemo-radiotherapy. Au NPes offer a large active surface, which can be used for drugs immobilization. Transmission electron microscopy (TEM) revealed that the size of the synthesized Au NPes along the longitudinal axis is ~60 nm, while along the transverse axis ~20 nm. Raman, thermogravimetric analysis (TGA) and differential scanning calorimetry (DCS) measurements showed, that the created nanosystem is stable up to a temperature of 110 °C. MTT assay revealed, that the highest cell mortality was observed for cell lines subjected to nano-chemo-radiotherapy (20–55%). Hence, Au NPes with immobilized cPt (cPt@AuNPes) are a promising nanosystem to improve the therapeutic efficiency of combined nano-chemo-radiotherapy.
Collapse
|
4
|
Engineering anti-cancer nanovaccine based on antigen cross-presentation. Biosci Rep 2020; 39:220729. [PMID: 31652460 PMCID: PMC6822533 DOI: 10.1042/bsr20193220] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 09/27/2019] [Accepted: 10/01/2019] [Indexed: 01/16/2023] Open
Abstract
Dendritic cells (DCs) present exogenous antigens on major histocompatibility complex (MHC) class I molecules, thereby activating CD8+ T cells, contributing to tumor elimination through a mechanism known as antigen cross-presentation. A variety of factors such as maturation state of DCs, co-stimulatory signals, T-cell microenvironment, antigen internalization routes and adjuvants regulate the process of DC-mediated antigen cross-presentation. Recently, the development of successful cancer immunotherapies may be attributed to the ability of DCs to cross-present tumor antigens. In this review article, we focus on the underlying mechanism of antigen cross-presentation and ways to improve antigen cross-presentation in different DC subsets. We have critically summarized the recent developments in the generation of novel nanovaccines for robust CD8+ T-cell response in cancer. In this context, we have reviewed nanocarriers that have been used for cancer immunotherapeutics based on antigen cross-presentation mechanism. Additionally, we have also expressed our views on the future applications of this mechanism in curing cancer.
Collapse
|
5
|
Mukherjee S, Sonanini D, Maurer A, Daldrup-Link HE. The yin and yang of imaging tumor associated macrophages with PET and MRI. Am J Cancer Res 2019; 9:7730-7748. [PMID: 31695797 PMCID: PMC6831464 DOI: 10.7150/thno.37306] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Accepted: 08/27/2019] [Indexed: 12/14/2022] Open
Abstract
Tumor associated macrophages (TAM) are key players in the cancer microenvironment. Molecular imaging modalities such as MRI and PET can be used to track and monitor TAM dynamics in tumors non-invasively, based on specific uptake and quantification of MRI-detectable nanoparticles or PET-detectable radiotracers. Particular molecular signatures can be leveraged to target anti-inflammatory TAM, which support tumor growth, and pro-inflammatory TAM, which suppress tumor growth. In addition, TAM-directed imaging probes can be designed to include immune modulating properties, thereby leading to combined diagnostic and therapeutic (theranostic) effects. In this review, we will discuss the complementary role of TAM-directed radiotracers and iron oxide nanoparticles for monitoring cancer immunotherapies with PET and MRI technologies. In addition, we will outline how TAM-directed imaging and therapy is interdependent and can be connected towards improved clinical outcomes
Collapse
|
6
|
Mohanty S, Aghighi M, Yerneni K, Theruvath JL, Daldrup-Link HE. Improving the efficacy of osteosarcoma therapy: combining drugs that turn cancer cell 'don't eat me' signals off and 'eat me' signals on. Mol Oncol 2019; 13:2049-2061. [PMID: 31376208 PMCID: PMC6763764 DOI: 10.1002/1878-0261.12556] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Revised: 06/19/2019] [Accepted: 08/02/2019] [Indexed: 01/01/2023] Open
Abstract
The long‐term survival of osteosarcoma patients with metastatic or recurrent disease remains dismal, and new therapeutic options are urgently needed. The purpose of our study was to compare the efficacy of CD47 mAb plus doxorubicin combination therapy in mouse models of osteosarcoma with CD47 mAb and doxorubicin monotherapy. Forty‐eight NOD scid gamma (NSG) mice with intratibial MNNG/HOS tumors received CD47 mAb, doxorubicin, combination therapy, or control IgG treatment. Twenty‐four mice (n = 6 per group) underwent pre‐ and post‐treatment magnetic resonance imaging (MRI) scans with the macrophage marker ferumoxytol, bioluminescence imaging, and histological analysis. Tumor ferumoxytol enhancement, tumor flux, and tumor‐associated macrophages (TAM) density were compared between different groups using a one‐way ANOVA. Twenty‐four additional NSG mice underwent survival analyses with Kaplan–Meier curves and a log‐rank (Mantel–Cox) test. Intratibial osteosarcomas demonstrated significantly stronger ferumoxytol enhancement and significantly increased TAM quantities after CD47 mAb plus doxorubicin combination therapy compared to CD47 mAb (P = 0.02) and doxorubicin monotherapy (P = 0.001). Tumor‐bearing mice treated with CD47 mAb plus doxorubicin combination therapy demonstrated significantly reduced tumor size and prolonged survival compared to control groups that received CD47 mAb (P = 0.03), doxorubicin monotherapy (P = 0.01), and control IgG (P = 0.001). In conclusion, CD47 mAb plus doxorubicin therapy demonstrates an additive therapeutic effect in mouse models of osteosarcomas, which can be monitored with an immediately clinically applicable MRI technique.
Collapse
Affiliation(s)
- Suchismita Mohanty
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University, CA, USA
| | - Maryam Aghighi
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University, CA, USA
| | - Ketan Yerneni
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University, CA, USA
| | | | - Heike E Daldrup-Link
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University, CA, USA
| |
Collapse
|
7
|
Ho YJ, Wang TC, Fan CH, Yeh CK. Spatially Uniform Tumor Treatment and Drug Penetration by Regulating Ultrasound with Microbubbles. ACS APPLIED MATERIALS & INTERFACES 2018; 10:17784-17791. [PMID: 29727168 DOI: 10.1021/acsami.8b05508] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Tumor microenvironment has different morphologies of vessels in the core and rim regions, which influences the efficacy of tumor therapy. Our study proposed to improve the spatial uniformity of the antivascular effect and drug penetration within the tumor core and rim in combination therapies by regulating ultrasound-stimulated microbubble destruction (USMD). Focused ultrasound at 2 MHz and lipid-shell microbubbles (1.12 ± 0.08 μm, mean ± standard deviation) were used to perform USMD. The efficiency of the antivascular effect was evaluated by intravital imaging to determine the optimal USMD parameters. Tumor perfusion and histological alterations in the tumor core and rim were used to analyze the spatial uniformity of the antivascular effect and liposomal-doxorubicin (5 mg/kg) penetration in the combination therapy. Tumor vessels of specific sizes were disrupted by regulating USMD: vessels with sizes of 11 ± 3, 14 ± 5, 19 ± 7, and 23 ± 10 μm were disrupted by stimulation at acoustic pressures of 3, 5, 7, and 9 MPa, respectively (each p < 0.05). The effective treatment time of USMD (at 2 × 107 microbubbles/mouse, 7 MPa, and three cycles) was 60-120 min, which resulted in the disruption of 21-44% of vessels smaller than 50 μm. The reductions in perfusion and vascular density after combination therapy did not differ significantly between the tumor core and rim. This study found that regulating USMD can result in homogeneous antivascular effects and drug penetration within tumors and thereby improve the efficacy of combination therapies.
Collapse
Affiliation(s)
- Yi-Ju Ho
- Department of Biomedical Engineering and Environmental Sciences , National Tsing Hua University , No. 101, Section 2, Kuang-Fu Road , Hsinchu 30013 , Taiwan
| | - Tzu-Chia Wang
- Department of Biomedical Engineering and Environmental Sciences , National Tsing Hua University , No. 101, Section 2, Kuang-Fu Road , Hsinchu 30013 , Taiwan
| | - Ching-Hsiang Fan
- Department of Biomedical Engineering and Environmental Sciences , National Tsing Hua University , No. 101, Section 2, Kuang-Fu Road , Hsinchu 30013 , Taiwan
| | - Chih-Kuang Yeh
- Department of Biomedical Engineering and Environmental Sciences , National Tsing Hua University , No. 101, Section 2, Kuang-Fu Road , Hsinchu 30013 , Taiwan
| |
Collapse
|
8
|
Mikyskova R, Indrova M, Stepanek I, Kanchev I, Bieblova J, Vosahlikova S, Moserova I, Truxova I, Fucikova J, Bartunkova J, Spisek R, Sedlacek R, Reinis M. Dendritic cells pulsed with tumor cells killed by high hydrostatic pressure inhibit prostate tumor growth in TRAMP mice. Oncoimmunology 2017; 6:e1362528. [PMID: 29209567 DOI: 10.1080/2162402x.2017.1362528] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Revised: 07/27/2017] [Accepted: 07/28/2017] [Indexed: 10/19/2022] Open
Abstract
Dendritic cell (DC)-based vaccines pulsed with high hydrostatic pressure (HHP)-inactivated tumor cells have recently been shown to be a promising tool for prostate cancer chemoimmunotherapy. In this study, DC-based vaccines, both pulsed and unpulsed, were as effective as docetaxel (DTX) in reducing prostate tumors in the orthotopic transgenic adenocarcinoma of the mouse prostate (TRAMP) model. However, we did not observe any additive or synergic effects of chemoimmunotherapy on the tumor growth, while only the combination of DTX and pulsed dendritic cells resulted in significantly lower proliferation detected by Ki67 staining in histological samples. The DC-based vaccine pulsed with HHP-treated tumor cells was also combined with another type of cytostatic, cyclophosphamide, with similar results. In another clinically relevant setting, minimal residual tumor disease after surgery, administration of DC-based vaccines after the surgery of poorly immunogenic transplanted TRAMP-C2, as well as in immunogenic TC-1 tumors, reduced the growth of tumor recurrences. To identify the effector cell populations after DC vaccine application, mice were twice immunized with both pulsed and unpulsed DC vaccine, and the cytotoxicity of the spleen cells populations was tested. The effector cell subpopulations were defined as CD4+ and NK1.1+, which suggests rather unspecific therapeutic effects of the DC-based vaccines in our settings. Taken together, our data demonstrate that DC-based vaccines represent a rational tool for the treatment of human prostate cancer.
Collapse
Affiliation(s)
- Romana Mikyskova
- Department of Transgenic Models of Diseases, Institute of Molecular Genetics of the AS CR, v.v.i., Prague, Czech Republic.,Czech Centre for Phenogenomics, Institute of Molecular Genetics of the ASCR, Prague, Czech Republic
| | - Marie Indrova
- Department of Transgenic Models of Diseases, Institute of Molecular Genetics of the AS CR, v.v.i., Prague, Czech Republic.,Czech Centre for Phenogenomics, Institute of Molecular Genetics of the ASCR, Prague, Czech Republic
| | - Ivan Stepanek
- Department of Transgenic Models of Diseases, Institute of Molecular Genetics of the AS CR, v.v.i., Prague, Czech Republic.,Czech Centre for Phenogenomics, Institute of Molecular Genetics of the ASCR, Prague, Czech Republic
| | - Ivan Kanchev
- Department of Transgenic Models of Diseases, Institute of Molecular Genetics of the AS CR, v.v.i., Prague, Czech Republic.,Czech Centre for Phenogenomics, Institute of Molecular Genetics of the ASCR, Prague, Czech Republic
| | - Jana Bieblova
- Czech Centre for Phenogenomics, Institute of Molecular Genetics of the ASCR, Prague, Czech Republic
| | | | | | | | - Jitka Fucikova
- Department of Immunology, Charles University, 2nd Faculty of Medicine and University Hospital Motol, Prague, Czech Republic.,SOTIO, a.s., Prague, Czech Republic
| | - Jirina Bartunkova
- Department of Immunology, Charles University, 2nd Faculty of Medicine and University Hospital Motol, Prague, Czech Republic.,SOTIO, a.s., Prague, Czech Republic
| | - Radek Spisek
- Department of Immunology, Charles University, 2nd Faculty of Medicine and University Hospital Motol, Prague, Czech Republic.,SOTIO, a.s., Prague, Czech Republic
| | - Radislav Sedlacek
- Department of Transgenic Models of Diseases, Institute of Molecular Genetics of the AS CR, v.v.i., Prague, Czech Republic.,Czech Centre for Phenogenomics, Institute of Molecular Genetics of the ASCR, Prague, Czech Republic
| | - Milan Reinis
- Department of Transgenic Models of Diseases, Institute of Molecular Genetics of the AS CR, v.v.i., Prague, Czech Republic.,Czech Centre for Phenogenomics, Institute of Molecular Genetics of the ASCR, Prague, Czech Republic
| |
Collapse
|
9
|
Zhao H, Zhao X, Du P, Qi G. Construction of random tumor transcriptome expression library for creating and selecting novel tumor antigens. Tumour Biol 2016; 37:12877-12887. [PMID: 27449040 DOI: 10.1007/s13277-016-5201-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2015] [Accepted: 07/13/2016] [Indexed: 12/29/2022] Open
Abstract
Novel tumor antigens are necessary for the development of efficient tumor vaccines for overcoming the immunotolerance and immunosuppression induced by tumors. Here, we developed a novel strategy to create tumor antigens by construction of random tumor transcriptome expression library (RTTEL). The complementary DNA (cDNA) from S180 sarcoma was used as template for arbitrarily amplifying gene fragments with random primers by PCR, then ligated to the C-terminal of HSP65 in a plasmid pET28a-HSP for constructing RTTEL in Escherichia coli. A novel antigen of A5 was selected from RTTEL with the strongest immunotherapeutic effects on S180 sarcoma. Adoptive immunotherapy with anti-A5 sera also inhibited tumor growth, further confirming the key antitumor roles of A5-specific antibodies in mice. A5 contains a sequence similar to protein-L-isoaspartate (D-aspartate) O-methyltransferase (PCMT1). The antisera of A5 were verified to cross-react with PCMT1 by Western blotting assay and vice versa. Both anti-A5 sera and anti-PCMT1 sera could induce antibody-dependent cell-mediated cytotoxicity and complement-dependent cytotoxicity toward S180 cells by in vitro assay. Further assay with fluorescent staining showed that PCMT1 is detectable on the surface of S180 cells. Summary, the strategy to construct RTTEL is potential for creating and screening novel tumor antigens to develop efficient tumor vaccines. By RTTEL, we successfully created a protein antigen of A5 with significant immunotherapeutic effects on S180 sarcoma by induction of antibodies targeting for PCMT1.
Collapse
Affiliation(s)
- Huizhun Zhao
- College of Life Science and Technology, Huazhong Agricultural University, No. 1 Shizishan Street, Hongshan District, Wuhan, 430070, HuBei Province, China
| | - Xiuyun Zhao
- College of Life Science and Technology, Huazhong Agricultural University, No. 1 Shizishan Street, Hongshan District, Wuhan, 430070, HuBei Province, China
| | - Peng Du
- College of Life Science, Hubei University, 430062, Wuhan, China
| | - Gaofu Qi
- College of Life Science and Technology, Huazhong Agricultural University, No. 1 Shizishan Street, Hongshan District, Wuhan, 430070, HuBei Province, China.
| |
Collapse
|
10
|
Co-delivery of chemotherapeutics and proteins for synergistic therapy. Adv Drug Deliv Rev 2016; 98:64-76. [PMID: 26546464 DOI: 10.1016/j.addr.2015.10.021] [Citation(s) in RCA: 151] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Revised: 10/23/2015] [Accepted: 10/26/2015] [Indexed: 01/15/2023]
Abstract
Combination therapy with chemotherapeutics and protein therapeutics, typically cytokines and antibodies, has been a type of crucial approaches for synergistic cancer treatment. However, conventional approaches by simultaneous administration of free chemotherapeutic drugs and proteins lead to limitations for further optimizing the synergistic effects, due to the distinct in vivo pharmacokinetics and distribution of small drugs and proteins, insufficient tumor selectivity and tumor accumulation, unpredictable drug/protein ratios at tumor sites, short half-lives, and serious systemic adverse effects. Consequently, to obtain optimal synergistic anti-tumor efficacy, considerable efforts have been devoted to develop the co-delivery systems for co-incorporating chemotherapeutics and proteins into a single carrier system and subsequently releasing the dual or multiple payloads at desired target sites in a more controllable manner. The co-delivery systems result in markedly enhanced blood stability and in vivo half-lives of the small drugs and proteins, elevated tumor accumulation, as well as the capability of delivering the multiple agents to the same target sites with rational drug/protein ratios, which may facilitate maximizing the synergistic effects and therefore lead to optimal antitumor efficacy. This review emphasizes the recent advances in the co-delivery systems for chemotherapeutics and proteins, typically cytokines and antibodies, for systemic or localized synergistic cancer treatment. Moreover, the proposed mechanisms responsible for the synergy of chemotherapeutic drugs and proteins are discussed.
Collapse
|
11
|
Kawano M, Tanaka K, Itonaga I, Iwasaki T, Miyazaki M, Ikeda S, Tsumura H. Dendritic cells combined with doxorubicin induces immunogenic cell death and exhibits antitumor effects for osteosarcoma. Oncol Lett 2016; 11:2169-2175. [PMID: 26998143 DOI: 10.3892/ol.2016.4175] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2014] [Accepted: 01/13/2016] [Indexed: 12/26/2022] Open
Abstract
The effects of dendritic cells (DCs) with low dose doxorubicin on the enhancement of the systemic immune response, including the effects on calreticulin (CRT) expression, heat shock protein 70 (HSP70) on the cell surface expression, and the enhancement of high mobility group box 1 (HMGB1) release from cancer cells, remain unclear. The present study investigated whether the combination of DCs and doxorubicin (ADM) induces immune cell death, and leads to tumor growth inhibition in a murine osteosarcoma model. To evaluate immune response activation in vivo, 4 groups of mice were established: i) untreated mice, ii) DC-treated mice, iii) ADM-treated mice, and iv) DC and ADM-treated mice. Immunological cell death and CRT, HSP70, and HMGB1 expression levels were higher in doxorubicin-treated cells than those in untreated or those treated with DCs alone. NF-κB expression was higher in the DCs after ligand activation using CRT, HSP70, or HMGB1 in vitro. Mice treated with DCs and ADM displayed an increased number of CD8+ T-lymphocytes within metastatic tumors and inhibition of metastatic growth. The expression of CRT and the release of HMGB1 from tumor tissues were increased in the ADM-treated groups. Treatment with DCs and ADM resulted in the highest serum interferon-γ levels. Combining ADM, which can induce immunogenic cell death, with DCs enhanced the systemic immune response. The findings of the present study provide further support for the continued development of antitumor agents that induce cell death and the immune response to target osteosarcoma.
Collapse
Affiliation(s)
- Masanori Kawano
- Department of Orthopaedic Surgery, Faculty of Medicine, Oita University, Yufu, Oita 879-5593, Japan
| | - Kazuhiro Tanaka
- Department of Orthopaedic Surgery, Faculty of Medicine, Oita University, Yufu, Oita 879-5593, Japan
| | - Ichiro Itonaga
- Department of Orthopaedic Surgery, Faculty of Medicine, Oita University, Yufu, Oita 879-5593, Japan
| | - Tatsuya Iwasaki
- Department of Orthopaedic Surgery, Faculty of Medicine, Oita University, Yufu, Oita 879-5593, Japan
| | - Masashi Miyazaki
- Department of Orthopaedic Surgery, Faculty of Medicine, Oita University, Yufu, Oita 879-5593, Japan
| | - Shinichi Ikeda
- Department of Orthopaedic Surgery, Faculty of Medicine, Oita University, Yufu, Oita 879-5593, Japan
| | - Hiroshi Tsumura
- Department of Orthopaedic Surgery, Faculty of Medicine, Oita University, Yufu, Oita 879-5593, Japan
| |
Collapse
|
12
|
Nishida S, Sugiyama H. Immunotherapy Targeting WT1: Designing a Protocol for WT1 Peptide-Based Cancer Vaccine. Methods Mol Biol 2016; 1467:221-232. [PMID: 27417973 DOI: 10.1007/978-1-4939-4023-3_19] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
There is much current excitement about the potential of cancer immunotherapy. WT1 is high on the National Cancer Institute's list of priority antigens for immune therapy. In this chapter we describe a protocol for a clinical trial using a WT1 peptide-based cancer vaccine.
Collapse
Affiliation(s)
- Sumiyuki Nishida
- Department of Respiratory Medicine, Allergy and Rheumatic Disease, Graduate School of Medicine, Osaka University, 2-2, Yamada-Oka, Suita-City, Osaka, 565-0871, Japan.
| | - Haruo Sugiyama
- Department of Functional Diagnostic Science, Graduate School of Medicine, Osaka University, Osaka, Japan
| |
Collapse
|
13
|
Mikyšková R, Štěpánek I, Indrová M, Bieblová J, Šímová J, Truxová I, Moserová I, Fučíková J, Bartůňková J, Špíšek R, Reiniš M. Dendritic cells pulsed with tumor cells killed by high hydrostatic pressure induce strong immune responses and display therapeutic effects both in murine TC-1 and TRAMP-C2 tumors when combined with docetaxel chemotherapy. Int J Oncol 2015; 48:953-64. [PMID: 26718011 PMCID: PMC4750542 DOI: 10.3892/ijo.2015.3314] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2015] [Accepted: 12/02/2015] [Indexed: 12/14/2022] Open
Abstract
High hydrostatic pressure (HHP) has been shown to induce immunogenic cell death of cancer cells, facilitating their uptake by dendritic cells (DC) and subsequent presentation of tumor antigens. In the present study, we demonstrated immunogenicity of the HHP-treated tumor cells in mice. HHP was able to induce immunogenic cell death of both TC-1 and TRAMP-C2 tumor cells, representing murine models for human papilloma virus-associated tumors and prostate cancer, respectively. HHP-treated cells induced stronger immune responses in mice immunized with these tumor cells, documented by higher spleen cell cytotoxicity and increased IFNγ production as compared to irradiated tumor cells, accompanied by suppression of tumor growth in vivo in the case of TC-1 tumors, but not TRAMP-C2 tumors. Furthermore, HHP-treated cells were used for DC-based vaccine antigen pulsing. DC co-cultured with HHP-treated tumor cells and matured by a TLR 9 agonist exhibited higher cell surface expression of maturation markers and production of IL-12 and other cytokines, as compared to the DC pulsed with irradiated tumor cells. Immunization with DC cell-based vaccines pulsed with HHP-treated tumor cells induced high immune responses, detected by increased spleen cell cytotoxicity and elevated IFNγ production. The DC-based vaccine pulsed with HHP-treated tumor cells combined with docetaxel chemotherapy significantly inhibited growth of both TC-1 and TRAMP-C2 tumors. Our results indicate that DC-based vaccines pulsed with HHP-inactivated tumor cells can be a suitable tool for chemoimmunotherapy, particularly with regard to the findings that poorly immunogenic TRAMP-C2 tumors were susceptible to this treatment modality.
Collapse
Affiliation(s)
- Romana Mikyšková
- Department of Transgenic Models of Diseases, Institute of Molecular Genetics of the ASCR, v.v.i., Prague, Czech Republic
| | - Ivan Štěpánek
- Department of Transgenic Models of Diseases, Institute of Molecular Genetics of the ASCR, v.v.i., Prague, Czech Republic
| | - Marie Indrová
- Department of Transgenic Models of Diseases, Institute of Molecular Genetics of the ASCR, v.v.i., Prague, Czech Republic
| | - Jana Bieblová
- Department of Transgenic Models of Diseases, Institute of Molecular Genetics of the ASCR, v.v.i., Prague, Czech Republic
| | - Jana Šímová
- Department of Transgenic Models of Diseases, Institute of Molecular Genetics of the ASCR, v.v.i., Prague, Czech Republic
| | | | | | - Jitka Fučíková
- Department of Immunology, Charles University, 2nd Faculty of Medicine and University Hospital Motol, Prague, Czech Republic
| | - Jiřina Bartůňková
- Department of Immunology, Charles University, 2nd Faculty of Medicine and University Hospital Motol, Prague, Czech Republic
| | - Radek Špíšek
- Department of Immunology, Charles University, 2nd Faculty of Medicine and University Hospital Motol, Prague, Czech Republic
| | - Milan Reiniš
- Department of Transgenic Models of Diseases, Institute of Molecular Genetics of the ASCR, v.v.i., Prague, Czech Republic
| |
Collapse
|
14
|
Rébé C, Ghiringhelli F. Cytotoxic effects of chemotherapy on cancer and immune cells: how can it be modulated to generate novel therapeutic strategies? Future Oncol 2015; 11:2645-2654. [PMID: 26376787 DOI: 10.2217/fon.15.198] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The first objective to use chemotherapy is to kill cancer cells. However, it is common knowledge that these drugs can also damage healthy host cells, especially immune cells, and thus impair the endogenous antitumor response. Here, we focus on the cytotoxic effects of chemotherapy on tumor cells and immune cells. It is not enough to simply kill cancer cells, and causing immunogenic cell death will impair the adaptive immune system's ability to fight the remaining cancer cells. On the other hand, the killing of immune cells can also enhance tumor growth. A study of the repercussions of the cytotoxic effects of chemotherapy is of great importance to evaluate the antitumor response. Strategies can be proposed to promote the 'good way' for cancer cells to die and to avoid the adverse side effects of chemotherapy on immune cells in order to strengthen the role of the immune system in the antitumor response.
Collapse
Affiliation(s)
- Cédric Rébé
- Institut National de la Santé et de la Recherche Médicale (INSERM) UMR 866, Dijon, 21079, France.,Centre Georges François Leclerc, Dijon, 21000, France
| | - François Ghiringhelli
- Institut National de la Santé et de la Recherche Médicale (INSERM) UMR 866, Dijon, 21079, France.,Centre Georges François Leclerc, Dijon, 21000, France.,Faculté de Médecine et de Pharmacie, Université de Bourgogne, Dijon, 21000, France
| |
Collapse
|
15
|
Gao F, Jing P, Liu J, Lu Y, Zhang P, Han W, Liu G, Ru N, Cui G, Sun C, Che Y, Zhang H, Hu Q, Wang HY, Wu Y, Guan C, Fu Q, Ma Z, Yu B. Hapten-enhanced overall survival time in advanced hepatocellular carcinoma by ultro-minimum incision personalized intratumoral chemoimmunotherapy. J Hepatocell Carcinoma 2015; 2:57-68. [PMID: 27508195 PMCID: PMC4918285 DOI: 10.2147/jhc.s80756] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
PURPOSE To compare the therapeutic effects of ultra-minimum incision personalized intratumoral chemoimmunotherapy (UMIPIC) with intratumoral chemotherapy (ITCT) in the treatment of advanced hepatocellular carcinomas and to analyze the effect of hapten as an immune booster. MATERIALS AND METHODS Patients with advanced hepatocellular carcinomas were treated with UMIPIC or ITCT with the same therapeutic procedure; the UMIPIC method had a proprietary regimen including an oxidant, a cytotoxic drug, and hapten, while ITCT delivered the same drug excluding hapten. Of 339 patients in total, 119 of the UMIPIC patients (n=214) had response data and 214 had survival data, and of the ITCT patients (n=125), 61 had response data and 125 had survival data. Tumor response was assessed with a computed tomography scan 6-8 weeks after the initial treatment; the survival rate was evaluated by follow-up visits. Tumor size was classified as small (<5 cm), large (5-10 cm), or very large (>10 cm); tumor sizes with liver function categorized using Child-Pugh class (A and B) were analyzed by correlation with overall survival. RESULTS The response rates (complete response + partial response + stable disease) were 78.68% and 81.52% in the UMIPIC and ITCT groups, respectively, with no statistically significant difference; however, the median overall survival was 7 months for UMIPIC (test) and 4 months for ITCT (control), respectively (P<0.01). The 6-month and 1-year survival rates for UMIPIC and ITCT were 58.88% vs 32.3% and 30.37% vs 13.6%, respectively (P<0.01). Single and multiple UMIPIC revealed significant improvement in overall survival compared to that of ITCT. Child-Pugh class A patients had a longer duration of survival compared to Child-Pugh class B patients in UMIPIC therapy. CONCLUSION Hapten had enhanced therapeutic effect with improvement in the survival duration in UMIPIC compared to ITCT. After reexamination, the response rate was not different due to inflammation caused by hapten. Hapten has been found to play an important role in immunotherapy to improve patient survival.
Collapse
Affiliation(s)
- Feng Gao
- TaiMei Baofa Cancer Hospital, Dongping, People's Republic of China
| | - Peng Jing
- TaiMei Baofa Cancer Hospital, Dongping, People's Republic of China
| | - Jian Liu
- TaiMei Baofa Cancer Hospital, Dongping, People's Republic of China
| | - Yuanfei Lu
- Jinan Baofa Cancer Hospital, Jinan, People's Republic of China
| | - Peicheng Zhang
- TaiMei Baofa Cancer Hospital, Dongping, People's Republic of China
| | - Wei Han
- Jinan Baofa Cancer Hospital, Jinan, People's Republic of China
| | - Guoliang Liu
- Jinan Baofa Cancer Hospital, Jinan, People's Republic of China
| | - Ning Ru
- TaiMei Baofa Cancer Hospital, Dongping, People's Republic of China
| | - Guanghui Cui
- TaiMei Baofa Cancer Hospital, Dongping, People's Republic of China
| | - Chenglin Sun
- Jinan Baofa Cancer Hospital, Jinan, People's Republic of China
| | - Yebing Che
- Jinan Baofa Cancer Hospital, Jinan, People's Republic of China
| | - Huaming Zhang
- Jinan Baofa Cancer Hospital, Jinan, People's Republic of China
| | - Qnglong Hu
- Beijing Baofa Cancer Hospital, Beijing, People's Republic of China
| | - Huan-You Wang
- Department of Pathology, UCSD School of Medicine, La Jolla, CA, USA
| | - Yingli Wu
- TaiMei Baofa Cancer Hospital, Dongping, People's Republic of China
| | - Changjiang Guan
- TaiMei Baofa Cancer Hospital, Dongping, People's Republic of China
| | - Qiang Fu
- Jinan Baofa Cancer Hospital, Jinan, People's Republic of China
| | - Zhenlu Ma
- TaiMei Baofa Cancer Hospital, Dongping, People's Republic of China
| | - Baofa Yu
- Jinan Baofa Cancer Hospital, Jinan, People's Republic of China; TaiMei Baofa Cancer Hospital, Dongping, People's Republic of China; Beijing Baofa Cancer Hospital, Beijing, People's Republic of China
| |
Collapse
|
16
|
Hernández-Gil J, Cobaleda-Siles M, Zabaleta A, Salassa L, Calvo J, Mareque-Rivas JC. An Iron Oxide Nanocarrier Loaded with a Pt(IV) Prodrug and Immunostimulatory dsRNA for Combining Complementary Cancer Killing Effects. Adv Healthc Mater 2015; 4:1034-42. [PMID: 25846677 DOI: 10.1002/adhm.201500080] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2015] [Revised: 03/08/2015] [Indexed: 01/10/2023]
Abstract
There is major current interest in harnessing the immune system against cancer and in developing drugs that provide complementary cancer killing mechanisms. Although the recent advent of nanoparticle-based drug delivery systems has improved the efficacy of platinum drugs for chemotherapy, one of the fundamental paradigms in their design and use is evading surveillance by the immune system to enhance anticancer efficacy. However, new studies are showing that chemotherapy can profit from actively targeting stimulation of the immune system and that suitably functionalized nanomaterials might be ideal for overcoming some key challenges in immunotherapy. Pt(IV) prodrug-modified PEGylated phospholipid micelles that encapsulate biocompatible iron oxide nanoparticles (IONPs) as a new delivery system for cisplatin are reported. The Pt(IV)-IONPs are functionalized with polyinosinic-polycytidylic acid (poly (I:C))--a double stranded RNA (dsRNA) analog widely used as an adjuvant in clinical trials of cancer immunotherapy. The Pt(IV)-IONPs and poly (I:C)--Pt(IV)-IONPs enhance by more than an order of magnitude the prodrug cytotoxicity in different tumor cells, while greatly increasing the ability of cisplatin and poly (I:C) to activate dendritic cells--the key cellular players in immunotherapy. The results suggest that these constructs hold promise for targeted chemoimmunotherapy.
Collapse
Affiliation(s)
- Javier Hernández-Gil
- Theranostic Nanomedicine Laboratory; CIC biomaGUNE; Paseo Miramón 182 20009 San Sebastián Spain
| | - Macarena Cobaleda-Siles
- Theranostic Nanomedicine Laboratory; CIC biomaGUNE; Paseo Miramón 182 20009 San Sebastián Spain
| | - Aintzane Zabaleta
- Theranostic Nanomedicine Laboratory; CIC biomaGUNE; Paseo Miramón 182 20009 San Sebastián Spain
| | - Luca Salassa
- Theranostic Nanomedicine Laboratory; CIC biomaGUNE; Paseo Miramón 182 20009 San Sebastián Spain
| | - Javier Calvo
- Theranostic Nanomedicine Laboratory; CIC biomaGUNE; Paseo Miramón 182 20009 San Sebastián Spain
| | - Juan C. Mareque-Rivas
- Theranostic Nanomedicine Laboratory; CIC biomaGUNE; Paseo Miramón 182 20009 San Sebastián Spain
- IKERBASQUE; Basque Foundation for Science; 48011 Bilbao Spain
| |
Collapse
|
17
|
Yu B, Lu Y, Gao F, Jing P, Wei H, Zhang P, Liu G, Ru N, Cui G, Xu X, Sun C, Guan C, Che Y, Wu Y, Ma Z, Fu Q, Liu J, Wang HY. Hapten-enhanced therapeutic effect in advanced stages of lung cancer by ultra-minimum incision personalized intratumoral chemoimmunotherapy therapy. LUNG CANCER-TARGETS AND THERAPY 2015; 6:1-11. [PMID: 28210146 PMCID: PMC5217516 DOI: 10.2147/lctt.s70679] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Aim The objective of the study reported here was to evaluate the therapeutic effects of hapten-enhanced chemoimmunotherapy in the treatment of advanced lung cancer by ultra-minimum incision personalized intratumoral chemoimmunotherapy (UMIPIC) and to analyze the effect of this immune booster. Materials and methods A total of 97 patients with advanced lung cancer were treated with UMIPIC or intratumoral chemotherapy (ITCT). UMIPIC was delivered intratumorally in combination with a proprietary therapeutic regimen composed of three components – an oxidant, a cytotoxic drug, and hapten. ITCT applied using the same procedures and regimen, only without hapten. All data from the two groups were reviewed and analyzed. A total of 55 patients were treated with UMIPIC and 42 with ITCT. Patient responses were assessed with computed tomography scan 4–6 weeks after treatment, and all of the patients were followed until their deaths. Results Median overall survival was 11.23 months in the UMIPIC (test) group and 5.62 months in the ITCT (control) group (P<0.01). The 6-month and 1-year survival rates of the UMIPIC and ITCT groups were 76.36% versus 45.23% (P<0.01) and 45.45% versus 23.81% (P<0.05), respectively. Two cycles of UMIPIC treatment (n=19) conferred a significant survival benefit compared with two cycles of ITCT (n=29); significant benefits in survival time were also found with UMIPIC (n=20) compared with ITCT (n=13) when both were utilized without adjuvant treatment. Conclusion The hapten-enhanced clinical effect of UMIPIC conferred a superior survival time in patients with advanced lung cancer compared with ITCT. The addition of the hapten in UMIPIC demonstrates a significant advantage in terms of prolonged survival time.
Collapse
Affiliation(s)
- Baofa Yu
- Jinan Baofa Cancer Hospital, Jinan; TaiMei Baofa Cancer Hospital, Dongping; Beijing Baofa Cancer Hospital, Beijing, People's Republic of China
| | | | - Feng Gao
- TaiMei Baofa Cancer Hospital, Dongping
| | - Peng Jing
- TaiMei Baofa Cancer Hospital, Dongping
| | - Han Wei
- Jinan Baofa Cancer Hospital, Jinan
| | | | | | - Ning Ru
- TaiMei Baofa Cancer Hospital, Dongping
| | | | | | | | | | | | - Yingli Wu
- TaiMei Baofa Cancer Hospital, Dongping
| | - Zhenlu Ma
- TaiMei Baofa Cancer Hospital, Dongping
| | - Qiang Fu
- Jinan Baofa Cancer Hospital, Jinan
| | - Jian Liu
- TaiMei Baofa Cancer Hospital, Dongping
| | - Huan-You Wang
- Department of Pathology, University of California, San Diego, CA, USA
| |
Collapse
|
18
|
Wilms tumor gene (WT1) peptide-based cancer vaccine combined with gemcitabine for patients with advanced pancreatic cancer. J Immunother 2014; 37:105-14. [PMID: 24509173 PMCID: PMC4229357 DOI: 10.1097/cji.0000000000000020] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Wilms tumor gene (WT1) protein is an attractive target for cancer immunotherapy. We aimed to investigate the feasibility of a combination therapy consisting of gemcitabine and WT1 peptide-based vaccine for patients with advanced pancreatic cancer and to make initial assessments of its clinical efficacy and immunologic response. Thirty-two HLA-A*24:02 patients with advanced pancreatic cancer were enrolled. Patients received HLA-A*24:02-restricted, modified 9-mer WT1 peptide (3 mg/body) emulsified with Montanide ISA51 adjuvant (WT1 vaccine) intradermally biweekly and gemcitabine (1000 mg/m) on days 1, 8, and 15 of a 28-day cycle. This combination therapy was well tolerated. The frequencies of grade 3-4 adverse events for this combination therapy were similar to those for gemcitabine alone. Objective response rate was 20.0% (6/30 evaluable patients). Median survival time and 1-year survival rate were 8.1 months and 29%, respectively. The association between longer survival and positive delayed-type hypersensitivity to WT1 peptide was statistically significant, and longer survivors featured a higher frequency of memory-phenotype WT1-specific cytotoxic T lymphocytes both before and after treatment. WT1 vaccine in combination with gemcitabine was well tolerated for patients with advanced pancreatic cancer. Delayed-type hypersensitivity-positivity to WT1 peptide and a higher frequency of memory-phenotype WT1-specific cytotoxic T lymphocytes could be useful prognostic markers for survival in the combination therapy with gemcitabine and WT1 vaccine. Further clinical investigation is warranted to determine the effectiveness of this combination therapy.
Collapse
|
19
|
Wang Y, Yi S, Sun L, Huang Y, Zhang M. Charge-selective fractions of naturally occurring nanoparticles as bioactive nanocarriers for cancer therapy. Acta Biomater 2014; 10:4269-84. [PMID: 24952072 DOI: 10.1016/j.actbio.2014.06.020] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2014] [Revised: 05/28/2014] [Accepted: 06/12/2014] [Indexed: 01/30/2023]
Abstract
A carnivorous fungus, Arthrobotrys oligospora, has been shown to secrete nanoparticles. In the present work, the potential of two charge-selective fractions of fungal nanoparticles (FNPs) as bioactive nanocarriers in cancer therapy is explored by investigating their immunostimulatory activities, cytotoxic mechanisms and in vitro immunochemotherapeutic effects. A surface charge-selective fractionation procedure to purify crude FNPs has been established, and two FNP fractions (i.e. FNP1 and FNP2), with different surface charges and similarly reduced diameters of 100-200nm, are obtained. Both FNP fractions enhance the secretion of multiple proinflammatory cytokines and chemokines from macrophages and splenocytes. However, FNP2 has stronger cytotoxicity than FNP1. It is FNP2 not FNP1 that could clearly inhibit cell proliferation by inducing apoptosis and arresting cells at the sub G0/G1 phase. Both the FNP fractions can form pH-responsive nanocomplexes with doxorubicin (DOX) via electrostatic interactions. For direct cytotoxicity, DOX-FNP2 complexes demonstrate higher activity than DOX against multiple tumor cells, while DOX-FNP1 complexes show weaker activity than DOX. Interestingly, in a co-culture experiment where splenocytes are co-cultured with tumor cells, both DOX-FNP complexes demonstrate higher cytotoxicity than DOX. In conclusion, this work proposes a combined therapeutics for cancer treatment using charge-selective fractions of FNPs as bioactive nanocarriers.
Collapse
Affiliation(s)
- Yongzhong Wang
- Department of Biomedical Engineering, Dorothy M. Davis Heart & Lung Research Institute, The Ohio State University, Columbus, OH 43210, USA; Department of Mechanical, Aerospace and Biomedical Engineering, The University of Tennessee, Knoxville, TN 37996, USA
| | - Sijia Yi
- Department of Mechanical, Aerospace and Biomedical Engineering, The University of Tennessee, Knoxville, TN 37996, USA
| | - Leming Sun
- Department of Biomedical Engineering, Dorothy M. Davis Heart & Lung Research Institute, The Ohio State University, Columbus, OH 43210, USA; Department of Mechanical, Aerospace and Biomedical Engineering, The University of Tennessee, Knoxville, TN 37996, USA
| | - Yujian Huang
- Department of Biomedical Engineering, Dorothy M. Davis Heart & Lung Research Institute, The Ohio State University, Columbus, OH 43210, USA; Department of Mechanical, Aerospace and Biomedical Engineering, The University of Tennessee, Knoxville, TN 37996, USA
| | - Mingjun Zhang
- Department of Biomedical Engineering, Dorothy M. Davis Heart & Lung Research Institute, The Ohio State University, Columbus, OH 43210, USA; Department of Mechanical, Aerospace and Biomedical Engineering, The University of Tennessee, Knoxville, TN 37996, USA.
| |
Collapse
|
20
|
Abstract
Advances in our understanding of the complex mechanisms of immune regulation and the interactions between tumor cells and the immune system have provided a solid foundation for advancing cancer immunotherapy and have inspired novel therapeutic strategies. Optimizing the effectiveness of immunotherapy will require targeting the antitumor immune response at multiple levels, and this may be achieved through synergistic combinations. Examples include combining two cancer vaccines to achieve a "prime and boost" effect, combining two immune checkpoint inhibitors, combining immunotherapy with targeted agents, or combining immunotherapy with low-dose chemotherapy or radiation. Immune checkpoint inhibitors, such as ipilimumab and nivolumab, will likely play an important role in the future of immunotherapy. The ability to block key pathways by which tumor cells seek to evade or suppress the immune response is critical to realizing the potential of cancer immunotherapy. Other exciting advances include recombinant oncolytic viruses and adoptive transfer of chimeric antigen receptor T cells. However, many challenges remain if durable tumor eradication with minimal toxicity is to be achieved in a broader population of cancer patients.
Collapse
|
21
|
Xu Y, Wang M. [Progress in immunotherapy for non-small cell lung cancer]. ZHONGGUO FEI AI ZA ZHI = CHINESE JOURNAL OF LUNG CANCER 2014; 17:34-41. [PMID: 24398312 PMCID: PMC6000202 DOI: 10.3779/j.issn.1009-3419.2014.01.06] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
In recent years, the five-year survival rate of patients with advanced stage non-small cell lung cancer (NSCLC) remains low despite recent advances in surgery, irradiation, chemotherapy, and targeted therapy. Immunotherapy which utilizes the immune system to control and eradicate cancer is a viable treatment approach for malignancy. Immunotherapy in patients with lung cancer has made breakthrough progress recently. Novel immunotherapeutic agents, such as antigen-specific tumour vaccines, checkpoint inhibitors, etc, have all been evaluated in lung cancer, and some have shown prolonged survival time in phase II trials and III trails. The immune-related response criteria for the evaluation of antitumor responses with immunotherapeutic agents have been made. Now, immunotherapy will likely be a fundamentally new concept for the treatment of NSCLC.
Collapse
Affiliation(s)
- Yan Xu
- Department of Respiratory Disease, Peking Union Medical College Hospital, Chinese Academy of Medical Science
and Peking Union Medical College, Beijing 100730, China
| | - Mengzhao Wang
- Department of Respiratory Disease, Peking Union Medical College Hospital, Chinese Academy of Medical Science
and Peking Union Medical College, Beijing 100730, China
| |
Collapse
|
22
|
Moschella F, Torelli GF, Valentini M, Urbani F, Buccione C, Petrucci MT, Natalino F, Belardelli F, Foà R, Proietti E. Cyclophosphamide induces a type I interferon-associated sterile inflammatory response signature in cancer patients' blood cells: implications for cancer chemoimmunotherapy. Clin Cancer Res 2013; 19:4249-61. [PMID: 23759676 DOI: 10.1158/1078-0432.ccr-12-3666] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
PURPOSE Certain chemotherapeutics, particularly cyclophosphamide, can enhance the antitumor efficacy of immunotherapy. A better understanding of the cellular and molecular basis of cyclophosphamide-mediated immunomodulation is needed to improve the efficacy of chemoimmunotherapy. EXPERIMENTAL DESIGN Transcript profiling and flow cytometry were used to explore cyclophosphamide-induced immunoadjuvanticity in patients with hematologic malignancies. RESULTS A single high-dose treatment rapidly (1-2 days) induced peripheral blood mononuclear cell (PBMC) transcriptional modulation, leading to reduction of cell-cycle and biosynthetic/metabolic processes and augmentation of DNA damage and cell death pathways (p53 signaling pathway), death-related scavenger receptors, antigen processing/presentation mediators, T-cell activation markers and, noticeably, a type I IFN (IFN-I) signature (OAS1, CXCL10, BAFF, IFITM2, IFI6, IRF5, IRF7, STAT2, UBE2L6, UNC93B1, ISG20L1, TYK2). Moreover, IFN-I-induced proinflammatory mediators (CXCL10, CCL2, IL-8, and BAFF) were increased in patients' plasma. Accordingly, cyclophosphamide induced the expansion/activation of CD14(+)CD16(+) monocytes, of HLA-DR(+), IL-8RA(+), and MARCO(+) monocytes/dendritic cells, and of CD69(+), OX40(+), and IL-8RA(+) lymphocytes. CONCLUSIONS Altogether, these data identify the cyclophosphamide-induced immunomodulatory factors in humans and indicate that preconditioning chemotherapy may stimulate immunity as a consequence of danger perception associated with blood cell death, through p53 and IFN-I-related mechanisms.
Collapse
Affiliation(s)
- Federica Moschella
- Department of Hematology Oncology and Molecular Medicine, Istituto Superiore di Sanità, Viale Regina Elena 299, Rome 00161, Italy.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
23
|
The combination of a low-dose chemotherapeutic agent, 5-fluorouracil, and an adenoviral tumor vaccine has a synergistic benefit on survival in a tumor model system. PLoS One 2013; 8:e67904. [PMID: 23840786 PMCID: PMC3695864 DOI: 10.1371/journal.pone.0067904] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2012] [Accepted: 05/23/2013] [Indexed: 12/13/2022] Open
Abstract
Standard cancer therapies, particularly those involving chemotherapy, are in need of modifications that both reduce short-term and long-term side effects as well as improve the overall survival of cancer patients. Here we show that combining low-dose chemotherapy with a therapeutic vaccination using an adenovirus encoding a model tumor-associated antigen, ovalbumin (Ad5-OVA), had a synergistic impact on survival in tumor-challenged mice. Mice that received the combinatorial treatment of Ad5-OVA plus low-dose 5-fluorouracil (5-FU) had a 95% survival rate compared to 7% and 30% survival rates for Ad5-OVA alone and 5-FU alone respectively. The presence of 5-FU enhanced the levels of OVA-specific CD8+ T lymphocytes in the spleens and draining lymph nodes of Ad5-OVA-treated mice, a phenomenon that was dependent on the mice having been tumor-challenged. Thus 5-FU may have enhanced survival of Ad5-OVA-treated mice by enhancing the tumor-specific immune response combined with eliminating tumor bulk. We also investigated the possibility that the observed therapeutic benefit may have been derived from the capacity of 5-FU to deplete MDSC populations. The findings presented here promote the concept of combining adenoviral cancer vaccines with low-dose chemotherapy.
Collapse
|
24
|
Vaccination for the prevention and treatment of breast cancer with special focus on Her-2/neu peptide vaccines. Breast Cancer Res Treat 2013; 138:1-12. [PMID: 23340862 DOI: 10.1007/s10549-013-2410-8] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2012] [Accepted: 01/07/2013] [Indexed: 01/18/2023]
Abstract
Immunologic interventions in a subset of breast cancer patients represent a well-established therapeutic approach reflecting individualized treatment modalities. Thus, the therapeutic administration of monoclonal antibodies targeting tumor-associated antigens (TAA), such as Her-2/neu, represents a milestone in cancer treatment. However, passive antibody administration suffers from several drawbacks, including frequency and long duration of treatment. These undesirables may be avoidable in an approach based on generating active immune responses against these same targets. Only recently has the significance of tumors in relation to their microenvironments been understood as essential for creating an effective cancer vaccine. In particular, the immune system plays an important role in suppressing or promoting tumor formation and growth. Therefore, activation of appropriate triggers (such as induction of Th1 cells, CD8+ T cells, and suppression of regulatory cells in combination with generation of antibodies with anti-tumor activity) is a desirable goal. Current vaccination approaches have concentrated on therapeutic vaccines using certain TAA. Many cancer antigens, including breast cancer antigens, have been described and also given priority ranking for use as vaccine antigens by the US National Cancer Institute. One of the TAA antigens which has been thoroughly examined in numerous trials is Her-2/neu. This review will discuss delivery systems for this antigen with special focus on T and B cell peptide vaccines. Attention will be given to their advantages and limitations, as well as the use of certain adjuvants to improve anti-cancer responses.
Collapse
|
25
|
Nars MS, Kaneno R. Immunomodulatory effects of low dose chemotherapy and perspectives of its combination with immunotherapy. Int J Cancer 2012; 132:2471-8. [PMID: 22927096 DOI: 10.1002/ijc.27801] [Citation(s) in RCA: 89] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Revised: 06/29/2012] [Accepted: 08/16/2012] [Indexed: 02/06/2023]
Abstract
Given that cancer is one of the main causes of death worldwide, many efforts have been directed toward discovering new treatments and approaches to cure or control this group of diseases. Chemotherapy is the main treatment for cancer; however, a conventional schedule based on maximum tolerated dose (MTD) shows several side effects and frequently allows the development of drug resistance. On the other side, low dose chemotherapy involves antiangiogenic and immunomodulatory processes that help host to fight against tumor cells, with lower grade of side effects. In this review, we present evidence that metronomic chemotherapy, based on the frequent administration of low or intermediate doses of chemotherapeutics, can be better than or as efficient as MTD. Finally, we present some data indicating that noncytotoxic concentrations of antineoplastic agents are able to both up-regulate the immune system and increase the susceptibility of tumor cells to cytotoxic T lymphocytes. Taken together, data from the literature provides us with sufficient evidence that low concentrations of selected chemotherapeutic agents, rather than conventional high doses, should be evaluated in combination with immunotherapy.
Collapse
Affiliation(s)
- Mariana S Nars
- Department of Microbiology and Immunology, Institute of Biosciences, UNESP-Univ Estadual Paulista, Botucatu, São Paulo, Brazil
| | | |
Collapse
|
26
|
Ireland DJ, Kissick HT, Beilharz MW. The Role of Regulatory T Cells in Mesothelioma. CANCER MICROENVIRONMENT 2012; 5:165-72. [PMID: 22302659 DOI: 10.1007/s12307-012-0100-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2011] [Accepted: 01/18/2012] [Indexed: 12/13/2022]
Abstract
Malignant mesothelioma (MM) appears to be responsive to immunotherapy. The lack of complete tumour cure as a result of many immunotherapies tested to date suggests that the immune response to MM is complex and multi-parametric. Regulatory T (Treg) cells are prevalent within murine and human mesotheliomas with their removal shown to result in tumour growth inhibition and the release of anti-tumour effector T cells from immunosuppression. The targeting of immune checkpoints as treatments for various solid tumours has recently shown promise in clinical settings. In addition, synergy between chemotherapy and immunotherapy has been demonstrated for many cancers, including mesothelioma. Here we demonstrate Treg cells as critical mediators of the anti-tumour immune response to MM and potential targets for anti-tumour immunotherapy; though the timing and dosage of Treg cell manipulating immunotherapies need to be optimised.
Collapse
Affiliation(s)
- Demelza J Ireland
- School of Pathology and Laboratory Medicine (M502), Faculty of Medicine, Dentistry and Health Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, WA, 6009, Australia.
| | - Haydn T Kissick
- Department of Surgery, Beth Israel Deaconess Medical Centre, Harvard Medical School, 3 Blackfan Circle, CLS 4/430, Boston, MA, 02215, USA
| | - Manfred W Beilharz
- School of Pathology and Laboratory Medicine (M502), Faculty of Medicine, Dentistry and Health Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, WA, 6009, Australia
| |
Collapse
|
27
|
Umansky V, Sevko A. Overcoming immunosuppression in the melanoma microenvironment induced by chronic inflammation. Cancer Immunol Immunother 2012; 61:275-282. [PMID: 22120757 PMCID: PMC11028817 DOI: 10.1007/s00262-011-1164-6] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2011] [Accepted: 11/12/2011] [Indexed: 02/07/2023]
Abstract
Malignant melanoma is known by its rapid progression and poor response to currently applied treatments. Despite the well-documented melanoma immunogenicity, the results of immunotherapeutic clinical trials are not satisfactory. This poor antitumor reactivity is due to the development of chronic inflammation in the tumor microenvironment characterized by infiltrating leukocytes and soluble mediators, which lead to an immunosuppression associated with cancer progression. Using the ret transgenic mouse melanoma model that closely resembles human melanoma, we demonstrated increased levels of chronic inflammatory factors in skin tumors and metastatic lymph nodes, which correlated with tumor progression. Furthermore, Gr1(+)CD11b(+) myeloid-derived suppressor cells (MDSC), known to block tumor-reactive T cells, were enriched in melanoma lesions and showed an enhanced immunosuppressive capacity. This MDSC accumulation was associated with a strong TCR ζ-chain downregulation in T cells suggesting that the tumor inflammatory microenvironment supports MDSC recruitment and immunosuppressive activity. Indeed, upon administration of phosphodiesterase-5 inhibitor sildenafil or paclitaxel in non-cytotoxic doses, we observed reduced levels of chronic inflammatory mediators in association with decreased MDSC amounts and immunosuppressive function. This led to a partial restoration of ζ-chain expression in T cells and to a significantly increased survival of tumor-bearing mice. CD8 T-cell depletion resulted in an abrogation of beneficial outcome of both drugs, suggesting the involvement of MDSC and CD8 T cells in the observed therapeutic effects. Our data imply that inhibition of chronic inflammation in the tumor microenvironment should be applied in conjunction with melanoma immunotherapies to increase their efficacy.
Collapse
Affiliation(s)
- Viktor Umansky
- Skin Cancer Unit (G300), German Cancer Research Center and University Hospital Mannheim, Im Neuenheimer Feld 280, 69120, Heidelberg, Germany.
| | - Alexandra Sevko
- Skin Cancer Unit (G300), German Cancer Research Center and University Hospital Mannheim, Im Neuenheimer Feld 280, 69120, Heidelberg, Germany
| |
Collapse
|
28
|
Tucker ZCG, Laguna BA, Moon E, Singhal S. Adjuvant immunotherapy for non-small cell lung cancer. Cancer Treat Rev 2012; 38:650-61. [PMID: 22226940 DOI: 10.1016/j.ctrv.2011.11.008] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2011] [Revised: 11/28/2011] [Accepted: 11/30/2011] [Indexed: 01/20/2023]
Abstract
Non-small cell lung cancer (NSCLC) is the biggest cancer killer in the United States and worldwide. In 2011, there are estimated to be 221,130 new cases of lung cancer in the United States. Over a million people will die of lung cancer worldwide this year alone. When possible, surgery to remove the tumor is the best treatment strategy for patients with NSCLC. However, even with adjuvant (postoperative) chemotherapy and radiation, more than 40% of patients will develop recurrences locally or systemically and ultimately succumb to their disease. Thus, there is an urgent need for developing superior approaches to treat patients who undergo surgery for NSCLC to eliminate residual disease that is likely responsible for these recurrences. Our group and others have been interested in using immunotherapy to augment the efficacy of current treatment strategies. Immunotherapy is very effective against minimal disease burden and small deposits of tumor cells that are accessible by the circulating immune cells. Therefore, this strategy may be ideally suited as an adjunct to surgery to seek and destroy microscopic tumor deposits that remain after surgery. This review describes the mechanistic underpinnings of immunotherapy and how it is currently being used to target residual disease and prevent postoperative recurrences after pulmonary resection in NSCLC.
Collapse
Affiliation(s)
- Zachary C G Tucker
- Division of Thoracic Surgery, University of Pennsylvania School of Medicine, 6 White, 3400 Spruce Street, Philadelphia, Pennsylvania 19104, USA.
| | | | | | | |
Collapse
|
29
|
Quakkelaar ED, Melief CJM. Experience with synthetic vaccines for cancer and persistent virus infections in nonhuman primates and patients. Adv Immunol 2012; 114:77-106. [PMID: 22449779 DOI: 10.1016/b978-0-12-396548-6.00004-4] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Synthetic vaccines, in particular long synthetic peptides of approximately 25-50 amino acids in length, are attractive for HIV vaccine development and for induction of therapeutic immune responses in patients with (pre-)malignant disorders. In the case of preventive vaccine development against HIV, no major success has been achieved, but the possibilities are by no means exhausted. A long peptide vaccine consisting of 13 overlapping peptides, which together cover the entire length of the two oncogenic proteins E6 and E7 of high-risk human papilloma virus type 16 (HPV16), caused complete regression of all lesions and eradication of virus in 9 out of 20 women with high-grade vulvar intraepithelial neoplasia, a therapy-resistant preneoplastic disorder. The nature and strength of the vaccine-prompted T cell responses were significantly correlated with the clinical response. Synthetic peptide vaccines are attractive, because they allow rational improvement of vaccine design and detailed pharmacokinetic and pharmacodynamic studies not possible with conventional vaccines. Improvements are possible by addition or conjugation of adjuvants, notably TLR ligands, to the synthetic peptides.
Collapse
Affiliation(s)
- Esther D Quakkelaar
- Department of Immunohematology, Leiden University Medical Center, Leiden, The Netherlands
| | | |
Collapse
|
30
|
Leibovici J, Itzhaki O, Huszar M, Sinai J. Targeting the tumor microenvironment by immunotherapy: part 2. Immunotherapy 2011; 3:1385-408. [DOI: 10.2217/imt.11.112] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Cancer therapy was traditionally centered on the neoplastic cells. This included mainly surgery, radiation, and chemotherapy, in some cases hormone therapy and to a lesser extent immunotherapy – all traditionally targeted to the highly proliferating mutated tumor cells. In view of our present understanding of the powerfull influence of the tumor microenvironment (TME) on cancer behavior and response – and lack of response – to treatment, this previously ignored constituent of cancer now has to be considered as an important, even indispensable target for therapy. The TME may be targeted both to its immune and to its nonimmune components. The various immune evasion elements of the TME should be targeted as well.
Collapse
Affiliation(s)
| | - Orit Itzhaki
- Department of Pathology, Sackler Faculty of Medicine, Tel-Aviv University, 69978 Tel-Aviv, Israel
| | - Monica Huszar
- Department of Pathology, Sackler Faculty of Medicine, Tel-Aviv University, 69978 Tel-Aviv, Israel
| | - Judith Sinai
- Department of Pathology, Sackler Faculty of Medicine, Tel-Aviv University, 69978 Tel-Aviv, Israel
| |
Collapse
|
31
|
In silico synergism and antagonism of an anti-tumour system intervened by coupling immunotherapy and chemotherapy: a mathematical modelling approach. Bull Math Biol 2011; 74:434-52. [PMID: 21972030 DOI: 10.1007/s11538-011-9693-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2010] [Accepted: 09/01/2011] [Indexed: 10/17/2022]
Abstract
Based on the logistic growth law for a tumour derived from enzymatic dynamics, we address from a physical point of view the phenomena of synergism, additivity and antagonism in an avascular anti-tumour system regulated externally by dual coupling periodic interventions, and propose a theoretical model to simulate the combinational administration of chemotherapy and immunotherapy. The in silico results of our modelling approach reveal that the tumour population density of an anti-tumour system, which is subject to the combinational attack of chemotherapeutical as well as immune intervention, depends on four parameters as below: the therapy intensities D, the coupling intensity I, the coupling coherence R and the phase-shifts Φ between two combinational interventions. In relation to the intensity and nature (synergism, additivity and antagonism) of coupling as well as the phase-shift between two therapeutic interventions, the administration sequence of two periodic interventions makes a difference to the curative efficacy of an anti-tumour system. The isobologram established from our model maintains a considerable consistency with that of the well-established Loewe Additivity model (Tallarida, Pharmacology 319(1):1-7, 2006). Our study discloses the general dynamic feature of an anti-tumour system regulated by two periodic coupling interventions, and the results may serve as a supplement to previous models of drug administration in combination and provide a type of heuristic approach for preclinical pharmacokinetic investigation.
Collapse
|
32
|
Brunsvig PF, Kyte JA, Kersten C, Sundstrøm S, Møller M, Nyakas M, Hansen GL, Gaudernack G, Aamdal S. Telomerase peptide vaccination in NSCLC: a phase II trial in stage III patients vaccinated after chemoradiotherapy and an 8-year update on a phase I/II trial. Clin Cancer Res 2011; 17:6847-57. [PMID: 21918169 DOI: 10.1158/1078-0432.ccr-11-1385] [Citation(s) in RCA: 131] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
PURPOSE We report two clinical trials in non-small cell lung cancer (NSCLC) patients evaluating immune response, toxicity, and clinical outcome after vaccination with the telomerase peptide GV1001: a phase II trial (CTN-2006) in patients vaccinated after chemoradiotherapy and an 8-year update on a previously reported phase I/II trial (CTN-2000). EXPERIMENTAL DESIGN CTN-2006: 23 inoperable stage III patients received radiotherapy (2 Gy × 30) and weekly docetaxel (20 mg/m(2)), followed by GV1001 vaccination. CTN-2000: 26 patients were vaccinated with two telomerase peptides (GV1001 and I540). The immune responses were evaluated by T-cell proliferation and cytokine assays. RESULTS CTN-2006 trial: a GV1001-specific immune response developed in 16/20 evaluable patients. Long-term immunomonitoring showed persisting responses in 13 subjects. Serious adverse events were not observed. Immune responders recorded a median PFS of 371 days, compared with 182 days for nonresponders (P = 0.20). CTN-2000 trial update: 13/24 evaluable subjects developed a GV1001 response. The immune responders achieved increased survival compared with nonresponders (median 19 months vs. 3.5 months; P < 0.001). Follow-up of four long-time survivors showed that they all harbored durable GV1001-specific T-cell memory responses and IFNγ(high)/IL-10(low)/IL-4(low) cytokine profiles. Two patients are free of disease after 108 and 93 months, respectively. CONCLUSIONS Vaccination with GV1001 is well tolerated, immunizes the majority of NSCLC patients and establishes durable T-cell memory. The considerable immune response rate and low toxicity in the phase II trial support the concept of combining chemoradiotherapy with vaccination. The survival advantage observed for immune responders warrants a randomized trial.
Collapse
Affiliation(s)
- Paal Fr Brunsvig
- Department of Clinical Cancer Research, Oslo University Hospital, Radiumhospitalet, Oslo, Norway
| | | | | | | | | | | | | | | | | |
Collapse
|
33
|
Rowswell-Turner RB, Harden JL, Nair RE, Gu T, Kilinc MO, Egilmez NK. Chronic chemoimmunotherapy achieves cure of spontaneous murine mammary tumors via persistent blockade of posttherapy counter-regulation. THE JOURNAL OF IMMUNOLOGY 2011; 187:4109-18. [PMID: 21908736 DOI: 10.4049/jimmunol.1101136] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Intratumoral delivery of IL-12 and GM-CSF induces local and systemic antitumor CD8(+) T cell activation and tumor kill. However, the effector response is transient and is rapidly countered by CD4(+) Foxp3(+) T suppressor cell expansion. To determine whether depletion of the pre-existing T suppressor cell pool prior to treatment could diminish posttherapy regulatory cell resurgence, FVBneuN mice bearing advanced spontaneous mammary tumors were treated with cyclophosphamide (CY) 1 d before IL-12/GM-CSF therapy. Administration of CY mediated a significant delay in the post-IL-12/GM-CSF T suppressor cell rebound, resulting in a 7-fold increase in the CD8(+) CTL/T suppressor cell ratio, a 3-fold enhancement of CTL cytotoxicity, and an extension of the effector window from 3 to 7 d. In long-term therapy studies, chronic chemoimmunotherapy promoted a dramatic enhancement of tumor regression, resulting in complete cure in 44% of the mice receiving CY plus IL-12/GM-CSF. Tumor eradication in the chronic therapy setting was associated with the ability to repeatedly rescue and maintain cytotoxic CD8(+) T cell activity. These findings demonstrated that chronic administration of CY in conjunction with immune therapy enhances the initial induction of antitumor T effector cells and, more importantly, sustains their cytotoxic activity over the long-term via persistent blockade of homeostatic counter-regulation.
Collapse
Affiliation(s)
- Rachael B Rowswell-Turner
- Department of Microbiology and Immunology, School of Medicine and Biomedical Sciences, University at Buffalo, The State University of New York, Buffalo, NY 14214,USA
| | | | | | | | | | | |
Collapse
|
34
|
Molinari P, Crespo MI, Gravisaco MJ, Taboga O, Morón G. Baculovirus capsid display potentiates OVA cytotoxic and innate immune responses. PLoS One 2011; 6:e24108. [PMID: 21918683 PMCID: PMC3168877 DOI: 10.1371/journal.pone.0024108] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2010] [Accepted: 08/04/2011] [Indexed: 01/08/2023] Open
Abstract
Baculoviruses (BV) are DNA viruses that are pathogenic for insects. Although BV infect a range of mammalian cell types, they do not replicate in these cells. Indeed, the potential effects of these insect viruses on the immune responses of mammals are only just beginning to be studied. We show in this paper that a recombinant Autographa californica multiple nuclear polyhedrosis virus carrying a fragment of ovalbumin (OVA) on the VP39 capsid protein (BV-OVA) has the capacity to act as an adjuvant and vector of antigens in mice, thereby promoting specific CD4 and cytotoxic T cell responses against OVA. BV also induced in vivo maturation of dendritic cells and the production of inflammatory cytokines, thus promoting innate and adaptive immune responses. The OVA-specific response induced by BV-OVA was strong enough to reject a challenge with OVA-expressing melanoma cells (MO5 cells) and effectively prolonged survival of MO5 bearing mice. All these findings, together with the absence of pre-existing immunity to BV in humans and the lack of viral gene expression in mammalian cells, make BV a candidate for vaccination.
Collapse
Affiliation(s)
- Paula Molinari
- Instituto de Biotecnología, Centro Nacional de Investigaciones Agropecuarias (CNIA), INTA Castelar, Buenos Aires, Argentina
| | - María I. Crespo
- Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI-CONICET), Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - María J. Gravisaco
- Instituto de Biotecnología, Centro Nacional de Investigaciones Agropecuarias (CNIA), INTA Castelar, Buenos Aires, Argentina
| | - Oscar Taboga
- Instituto de Biotecnología, Centro Nacional de Investigaciones Agropecuarias (CNIA), INTA Castelar, Buenos Aires, Argentina
| | - Gabriel Morón
- Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI-CONICET), Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina
- * E-mail:
| |
Collapse
|
35
|
Pellicciotta I, Yang CPH, Goldberg GL, Shahabi S. Epothilone B enhances Class I HLA and HLA-A2 surface molecule expression in ovarian cancer cells. Gynecol Oncol 2011; 122:625-31. [PMID: 21621254 DOI: 10.1016/j.ygyno.2011.05.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2011] [Accepted: 05/04/2011] [Indexed: 12/01/2022]
Abstract
OBJECTIVE Ovarian cancer is the leading cause of death from gynecologic cancers in the United States. Epothilone B (EpoB), Taxol and vinblastine are anti-neoplastic agents that interfere with microtubules and arrest the cell cycle in the G2/M phase. EpoB is being evaluated in phase III clinical trials, and its analogs are currently being used in the treatment of taxane-resistant metastatic breast cancer. Little is known about the effect of these drugs on the immune response to tumors. Cancer cells evade immune recognition by down-regulating HLA Class I expression, allowing escape from immune surveillance and destruction. Our data illustrates the effect of microtubule-interacting agents on HLA Class I and HLA-A2 expression as well as the modulation of cytokine expression in ovarian cancer cells. METHODS Ovarian cancer cells were treated with different concentrations of drugs. Cell surface expression and mRNA transcription of HLA Class I molecules and HLA-A2 was examined. IFNα, IL1β, IL12 and IL6 mRNA expression was also evaluated upon EpoB treatment. RESULTS Low-dose EpoB, Taxol and vinblastine greatly increased expression of HLA Class I and HLA-A2 molecules in Hey ovarian cancer cells. EpoB does not modulate HLA expression in drug-resistant ovarian cancer cells. The expression of IFNα, IL1β, IL12 and IL6 is also markedly increased upon EpoB treatment. CONCLUSIONS Nanomolar concentrations of microtubule-interacting agents enhance immune-visibility of ovarian cancer cells by increasing HLA Class I and pro-inflammatory cytokine expression. Immune recognition of tumor cells may be improved.
Collapse
Affiliation(s)
- Ilenia Pellicciotta
- Division of Gynecologic Oncology, Department of Obstetrics & Gynecology and Women's Health, Montefiore Medical Center, the Albert Einstein College of Medicine and the Albert Einstein Cancer Center, Bronx, New York, NY 10461, USA.
| | | | | | | |
Collapse
|
36
|
Lee IH, An S, Yu MK, Kwon HK, Im SH, Jon S. Targeted chemoimmunotherapy using drug-loaded aptamer-dendrimer bioconjugates. J Control Release 2011; 155:435-41. [PMID: 21641946 DOI: 10.1016/j.jconrel.2011.05.025] [Citation(s) in RCA: 79] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2011] [Accepted: 05/22/2011] [Indexed: 12/21/2022]
Abstract
We reported an innovative, targeted chemoimmuno drug-delivery system. Although chemoimmunotherapy, as an alternative to or in combination with conventional therapeutic systems, has been in the forefront of recent oncological research, as presently configured, such systems face several major obstacles for efficient clinical application. Here, we establish a novel nano-platform for effective chemoimmunotherapy designed to overcome the drawbacks of conventional cancer therapies, describing a delivery system based on a dendrimer and a single-strand DNA-A9 PSMA (prostate-specific membrane antigen) RNA aptamer hybrid. Employing these vehicles, we demonstrate the promising possibility of this chemoimmuno therapeutic system against prostate cancer in in vivo and in vitro models.
Collapse
Affiliation(s)
- In-Hyun Lee
- Cell Dynamics Research Center, School of Life Sciences, Gwang ju Institute of Science and Technology, Buk-gu, Gwang ju, Republic of Korea
| | | | | | | | | | | |
Collapse
|
37
|
Moschella F, Valentini M, Aricò E, Macchia I, Sestili P, D'Urso MT, Alessandri C, Belardelli F, Proietti E. Unraveling cancer chemoimmunotherapy mechanisms by gene and protein expression profiling of responses to cyclophosphamide. Cancer Res 2011; 71:3528-39. [PMID: 21444678 DOI: 10.1158/0008-5472.can-10-4523] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Certain chemotherapeutic drugs, such as cyclophosphamide (CTX), can enhance the antitumor efficacy of immunotherapy because of their capacity to modulate innate and adaptive immunity. Indeed, it has been argued that this capacity may be more significant to chemotherapeutic efficacy in general than is currently appreciated. To gain insights into the core mechanisms of chemoimmunotherapy, we methodically profiled the effects of CTX on gene expression in bone marrow, spleen, and peripheral blood, and on cytokine expression in plasma and bone marrow of tumor-bearing mice. Gene and protein expression were modulated early and transiently by CTX, leading to upregulation of a variety of immunomodulatory factors, including danger signals, pattern recognition receptors, inflammatory mediators, growth factors, cytokines, chemokines, and chemokine receptors. These factors are involved in sensing CTX myelotoxicity and activating repair mechanisms, which, in turn, stimulate immunoactivation events that promote efficacy. In particular, CTX induced a T-helper 17 (Th17)-related gene signature associated with an increase in Th17, Th1, and activated CD25(+)CD4(+)Foxp3(-) T lymphocytes and a slight recovery of regulatory T cells. By analyzing gene and protein expression kinetics and their relationship to the antitumor efficacy of different therapeutic schedules of combination, we determined that optimal timing for performing adoptive immunotherapy is approximately 1 day after CTX treatment. Together, our findings highlight factors that may propel the efficacy of chemoimmunotherapy, offering a mechanistic glimpse of the important immune modulatory effects of CTX.
Collapse
Affiliation(s)
- Federica Moschella
- Department of Cell Biology and Neurosciences, Istituto Superiore di Sanità, Rome, Italy.
| | | | | | | | | | | | | | | | | |
Collapse
|
38
|
Guo QY, Yuan M, Peng J, Cui XM, Song G, Sui X, Lu SB. Antitumor activity of mixed heat shock protein/peptide vaccine and cyclophosphamide plus interleukin-12 in mice sarcoma. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2011; 30:24. [PMID: 21352555 PMCID: PMC3056821 DOI: 10.1186/1756-9966-30-24] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/23/2010] [Accepted: 02/26/2011] [Indexed: 01/08/2023]
Abstract
Background The immune factors heat shock protein (HSP)/peptides (HSP/Ps) can induce both adaptive and innate immune responses. Treatment with HSP/Ps in cancer cell-bearing mice and cancer patients revealed antitumor immune activity. We aimed to develop immunotherapy strategies by vaccination with a mixture of HSP/Ps (mHSP/Ps, HSP60, HSP70, Gp96 and HSP110) enhanced with cyclophosphamide (CY) and interleukin-12 (IL-12). Methods We extracted mHSP/Ps from the mouse sarcoma cell line S180 using chromatography. The identity of proteins in this mHSP/Ps was assayed using SDS-PAGE and Western blot analysis with antibodies specific to various HSPs. BALB/C mice bearing S180 cells were vaccinated with mHSP/Ps ×3, then were injected intraperitoneally with low-dose CY and subcutaneously with IL-12, 100 μg/day, ×5. After vaccination, T lymphocytes in the peripheral blood were analyzed using FACScan and Cytotoxicity (CTL) was analyzed using lactate dehydrogenase assay. ELISPOT assay was used to evaluate interferon γ (IFN-γ), and immune cell infiltration in tumors was examined in the sections of tumor specimen. Results In mice vaccinated with enhanced vaccine (mHSP/Ps and CY plus IL-12), 80% showed tumor regression and long-term survival, and tumor growth inhibition rate was 82.3% (30 days), all controls died within 40 days. After vaccination, lymphocytes and polymorphonuclear leukocytes infiltrated into the tumors of treated animals, but no leukocytes infiltrated into the tumors of control mice. The proportions of natural killer cells, CD8+, and interferon-γ-secreting cells were all increased in the immune group, and tumor-specific cytotoxic T lymphocyte activity was increased. Conclusions In this mice tumor model, vaccination with mHSP/Ps combined with low-dose CY plus IL-12 induced an immunologic response and a marked antitumor response to autologous tumors. The regimen may be a promising therapeutic agent against tumors.
Collapse
Affiliation(s)
- Quan-Yi Guo
- Institute of Orthopedic Research, General Hospital of the People's Liberation Army, Beijing 100853, China
| | | | | | | | | | | | | |
Collapse
|
39
|
Koido S, Hara E, Homma S, Ohkusa T, Gong J, Tajiri H. Cancer immunotherapy by fusions of dendritic cells and tumor cells. Immunotherapy 2011; 1:49-62. [PMID: 20635973 DOI: 10.2217/1750743x.1.1.49] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Dendritic cells (DCs) are potent professional antigen-presenting cells and play a critical role in the induction of primary immune responses. DC-based vaccination represents a potentially powerful strategy for cancer immunotherapy. Thus, the use of cancer vaccines to eliminate residual tumor cells is a promising area of investigation. The immunotherapy of tumor antigen-loaded DCs has now been demonstrated in cancer patients and some clinical responses without any significant toxicity. Fusions of DCs and tumor cells represent an alternative but promising approach to overcome the inability of tumor antigens to induce a sustainable T-cell response. This review deals with recent progress in the immunotherapy of cancer with fusions of DCs and tumor cells.
Collapse
Affiliation(s)
- Shigeo Koido
- Department of Internal Medicine, The Jikei University, Tokyo, Japan.
| | | | | | | | | | | |
Collapse
|
40
|
Immunotherapy for lung cancers. J Biomed Biotechnol 2011; 2011:250860. [PMID: 21318107 PMCID: PMC3035001 DOI: 10.1155/2011/250860] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2010] [Revised: 11/15/2010] [Accepted: 12/23/2010] [Indexed: 11/21/2022] Open
Abstract
Lung cancer is the leading cause of cancer-related deaths worldwide. Although treatment methods in surgery, irradiation, and chemotherapy have improved, prognosis remains unsatisfactory and developing new therapeutic strategies is still an urgent demand. Immunotherapy is a novel therapeutic approach wherein activated immune cells can specifically kill tumor cells by recognition of tumor-associated antigens without damage to normal cells. Several lung cancer vaccines have demonstrated prolonged survival time in phase II and phase III trials, and several clinical trials are under investigation. However, many clinical trials involving cancer vaccination with defined tumor antigens work in only a small number of patients. Cancer immunotherapy is not completely effective in eradicating tumor cells because tumor cells escape from host immune scrutiny. Understanding of the mechanism of immune evasion regulated by tumor cells is required for the development of more effective immunotherapeutic approaches against lung cancer. This paper discusses the identification of tumor antigens in lung cancer, tumor immune escape mechanisms, and clinical vaccine trials in lung cancer.
Collapse
|
41
|
Kaneno R, Shurin GV, Kaneno FM, Naiditch H, Luo J, Shurin MR. Chemotherapeutic agents in low noncytotoxic concentrations increase immunogenicity of human colon cancer cells. Cell Oncol (Dordr) 2011; 34:97-106. [PMID: 21290210 DOI: 10.1007/s13402-010-0005-5] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/11/2010] [Indexed: 11/28/2022] Open
Abstract
BACKGROUND We have recently reported that chemotherapeutic agents in ultra low noncytotoxic concentrations may block the ability of tumor cells to suppress functional activation of dendritic cells (DCs). METHODS HCT-116 human colon cancer cells were treated with 0.5 nM paclitaxel (PAC) or 2 nM doxorubicin (DOX) with the aim of defining the immunogenic changes induced by ultra low noncytotoxic concentrations of antineoplastic chemotherapeutic agents. Genetic alterations were screened by DNA microarray that revealed increased expression of genes involved in antigen processing and presentation, including the heat-shock protein, calmodulin, and proteasome 26 genes. As the proteins encoded by these genes are involved in the cytosolic route of antigen processing machinery, we next evaluated whether PAC and DOX in noncytotoxic concentrations changed expression of MHC class I antigen processing machinery (APM) components in three different colon cancer cell lines. RESULTS Our results showed that PAC and DOX increased the intracellular expression of APM proteins, including calmodulin, LMP2, LMP7, TAP1 and tapasin. The biological significance of modulation of antigen processing and presentation proteins in tumor cells by ultra low nontoxic concentrations of chemotherapeutic drugs was revealed when non-treated and treated tumor cells were used as a source of tumor antigens for the generation of tumor-specific cytotoxic T cells (CTLs) in vitro. We demonstrated that (i) DCs that engulf tumor cells pretreated with noncytotoxic concentrations of chemotherapeutic agents induced CTLs with a higher cytotoxic potential than DCs loaded with nontreated tumor cells, and (ii) CTLs induced by tumor lysate-pulsed DCs killed live tumor cells more efficiently if these tumor cells were pretreated with noncytotoxic concentrations of chemotherapeutic drugs. CONCLUSIONS These results demonstrate that chemomodulation of human tumor cells with noncytotoxic concentrations of chemotherapeutic agents increases tumor immunogenicity and results in the generation of more efficient DC vaccines and CTLs, which can be used for cell-based anticancer immunotherapies.
Collapse
Affiliation(s)
- Ramon Kaneno
- Department of Microbiology and Immunology, Institute of Biosciences, São Paulo State University, Botucatu, SP, Brazil
| | | | | | | | | | | |
Collapse
|
42
|
Schiavoni G, Sistigu A, Valentini M, Mattei F, Sestili P, Spadaro F, Sanchez M, Lorenzi S, D'Urso MT, Belardelli F, Gabriele L, Proietti E, Bracci L. Cyclophosphamide synergizes with type I interferons through systemic dendritic cell reactivation and induction of immunogenic tumor apoptosis. Cancer Res 2010; 71:768-78. [PMID: 21156650 DOI: 10.1158/0008-5472.can-10-2788] [Citation(s) in RCA: 271] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Successful chemotherapy accounts for both tumor-related factors and host immune response. Compelling evidence suggests that some chemotherapeutic agents can induce an immunogenic type of cell death stimulating tumor-specific immunity. Here, we show that cyclophosphamide (CTX) exerts two types of actions relevant for the induction of antitumor immunity in vivo: (i) effect on dendritic cell (DC) homeostasis, mediated by endogenous type I interferons (IFN-I), leading to the preferential expansion of CD8α(+) DC, the main subset involved in the cross-presentation of cell-derived antigens; and (ii) induction of tumor cell death with clear-cut immunogenic features capable of stimulating tumor infiltration, engulfment of tumor apoptotic material, and CD8 T-cell cross-priming by CD8α(+) DC. Notably, the antitumor effects of CTX were efficiently amplified by IFN-I, the former providing a source of antigen and a "resetting" of the DC compartment and the latter supplying optimal costimulation for T-cell cross-priming, resulting in the induction of a strong antitumor response and tumor rejection. These results disclose new perspectives for the development of targeted and more effective chemoimmunotherapy treatments of cancer patients.
Collapse
Affiliation(s)
- Giovanna Schiavoni
- Department of Cell Biology and Neurosciences, Istituto Superiore di Sanità, Rome, Italy
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
43
|
Steer HJ, Lake RA, Nowak AK, Robinson BWS. Harnessing the immune response to treat cancer. Oncogene 2010; 29:6301-13. [PMID: 20856204 DOI: 10.1038/onc.2010.437] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
It is well established that the immune system has the capacity to attack malignant cells. During malignant transformation cells acquire numerous molecular and biochemical changes that render them potentially vulnerable to immune cells. Yet it is self-evident that a growing tumour has managed to evade these host defence mechanisms. The exact ways in which the immune system interacts with tumour cells and how cancers are able to escape immunological eradication have only recently started to be fully elucidated. Understanding the relationship between the tumour and the anti-tumour immune response and how this can be altered with conventional treatments and immune-targeted therapies is crucial to developing new treatments for patients with cancer. In this review, focusing on the anti-tumour T-cell response, we summarize our understanding of how tumours, cancer treatments and the immune system interact, how tumours evade the immune response and how this process could be manipulated for the benefit of patients with cancer.
Collapse
Affiliation(s)
- H J Steer
- School of Medicine and Pharmacology, University of Western Australia, Perth, Western Australia, Australia.
| | | | | | | |
Collapse
|
44
|
Moschella F, Proietti E, Capone I, Belardelli F. Combination strategies for enhancing the efficacy of immunotherapy in cancer patients. Ann N Y Acad Sci 2010; 1194:169-78. [PMID: 20536466 DOI: 10.1111/j.1749-6632.2010.05464.x] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A major challenge in cancer immunotherapy is the identification of effective strategies for enhancing its clinical efficacy. One approach is based on adjuvants capable of breaking tolerance against tumor-associated antigens. Interferon-alpha(IFN-alpha), an antiviral cytokine with a long record of clinical use, has recently been shown to act as an effective adjuvant in cancer patients. Notably, a special interest is currently focused on the use of dendritic cells (DC) generated in the presence of IFN-alpha (IFN-DC) for the preparation of anticancer vaccines. An additional approach for enhancing the response to immunotherapy relies on its combination with chemotherapy. In fact, an ensemble of results from both studies in animal models and pilot clinical trials suggest that certain chemotherapeutic agents can act, under defined conditions, as strong adjuvants for enhancing the efficacy of immunotherapy. These results open new opportunities for designing mechanism-based combination therapies involving both chemotherapy and new-generation cancer vaccines, including IFN-DC-based vaccines.
Collapse
Affiliation(s)
- Federica Moschella
- Department of Cell Biology and Neurosciences, Istituto Superiore di Sanità, Rome, Italy
| | | | | | | |
Collapse
|
45
|
Ladjemi MZ, Jacot W, Chardès T, Pèlegrin A, Navarro-Teulon I. Anti-HER2 vaccines: new prospects for breast cancer therapy. Cancer Immunol Immunother 2010; 59:1295-312. [PMID: 20532501 DOI: 10.1007/s00262-010-0869-2] [Citation(s) in RCA: 104] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2009] [Accepted: 05/11/2010] [Indexed: 12/24/2022]
Abstract
Each year, breast cancer accounts for more than 400,000 new cancer cases and more than 130,000 cancer deaths in Europe. Prognosis of nonmetastatic breast cancer patients is directly related to the extent of the disease, mainly nodal spreading and tumor size, and to the molecular profile, particularly HER2 over-expression. In patients with HER2-over-expressing tumors, different studies have shown cellular and/or humoral immune responses against HER2 associated with a lower tumor development at early stages of the disease. These findings have led to the hypothesis that the generation of an anti-HER2 immune response should protect patients from HER2-over-expressing tumor growth. Taken together with the clinical efficiency of trastuzumab-based anti-HER2 passive immunotherapy, these observations allowed to envisage various vaccine strategies against HER2. The induction of a stable and strong immunity by cancer vaccines is expected to lead to establishment of immune memory, thereby preventing tumor recurrence. However, an immunological tolerance against HER2 antigen exists representing a barrier to effective vaccination against this oncoprotein. As a consequence, the current challenge for vaccines is to find the best conditions to break this immunological tolerance. In this review, we will discuss the different anti-HER2 vaccine strategies currently developed; considering the strategies having reached the clinical phases as well as those still in preclinical development. The used antigen can be either composed of tumoral allogenic cells or autologous cells, or specific to HER2. It can be delivered by dendritic cells or in a DNA, peptidic or proteic form. Another area of research concerns the use of anti-idiotypic antibodies mimicking HER2.
Collapse
Affiliation(s)
- Maha Zohra Ladjemi
- IRCM, Institut de Recherche en Cancérologie de Montpellier, INSERM U896, Université Montpellier1, Montpellier, France
| | | | | | | | | |
Collapse
|
46
|
Empowering malaria vaccination by drug administration. Curr Opin Immunol 2010; 22:367-73. [DOI: 10.1016/j.coi.2010.04.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2010] [Revised: 03/23/2010] [Accepted: 04/06/2010] [Indexed: 11/18/2022]
|
47
|
Low-dose cyclophosphamide synergizes with dendritic cell-based immunotherapy in antitumor activity. J Biomed Biotechnol 2010; 2010:798467. [PMID: 20508851 PMCID: PMC2874992 DOI: 10.1155/2010/798467] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2009] [Revised: 02/05/2010] [Accepted: 03/07/2010] [Indexed: 11/30/2022] Open
Abstract
Clinical immunotherapy trials like dendritic cell-based vaccinations are hampered by the tumor's offensive repertoire that suppresses the incoming effector cells. Regulatory T cells are instrumental in suppressing the function of cytotoxic T cells. We studied the effect of low-dose cyclophosphamide on the suppressive function of regulatory T cells and investigated if the success rate of dendritic cell immunotherapy could be improved.
For this, mesothelioma tumor-bearing mice were treated with dendritic cell-based immunotherapy alone or in combination with low-dose of cyclophosphamide. Proportions of regulatory T cells and the cytotoxic T cell functions at different stages of disease were analyzed. We found that low-dose cyclophosphamide induced beneficial immunomodulatory effects by preventing the induction of Tregs, and as a consequence, cytotoxic T cell function was no longer affected. Addition of cyclophosphamide improved immunotherapy leading to an increased median and overall survival. Future studies are needed to address the usefulness of this combination treatment for mesothelioma patients.
Collapse
|
48
|
Pfannenstiel LW, Lam SSK, Emens LA, Jaffee EM, Armstrong TD. Paclitaxel enhances early dendritic cell maturation and function through TLR4 signaling in mice. Cell Immunol 2010; 263:79-87. [PMID: 20346445 DOI: 10.1016/j.cellimm.2010.03.001] [Citation(s) in RCA: 124] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2009] [Revised: 02/24/2010] [Accepted: 03/01/2010] [Indexed: 12/19/2022]
Abstract
Subclinical doses of Paclitaxel (PTX) given 1day prior to a HER-2/neu (neu)-targeted, granulocyte-macrophage colony stimulating factor (GM-CSF)-secreting whole-cell vaccine enhances neu-specific T cell responses and slows neu(+) tumor growth in tolerized HER-2/neu (neu-N) mice. We demonstrate that co-administration of PTX and Cyclophosphamide (CY) synergizes to slow tumor growth, and that in vitro, DC precursors exposed to PTX before LPS maturation results in greater co-stimulatory molecule expression, IL-12 production, and the ability to induce CD8(+) T cells with enhanced lytic activity against neu(+) tumors. PTX treatment also enhances maturation marker expression on CD11c(+) DCs isolated from vaccine-draining lymph nodes. Ex vivo, these DCs activate CD8(+) T cells with greater lytic capability than DC's from vaccine alone-treated neu-N mice. Finally, PTX treatment results in enhanced antigen-specific, IFN-gamma-secreting CD8(+) T cells in vivo. Thus, administration of PTX with a tumor vaccine improves T cell priming through enhanced maturation of DC.
Collapse
Affiliation(s)
- Lukas W Pfannenstiel
- Department of Oncology, Sidney Kimmel Cancer Center, Division of Immunology, Johns Hopkins University, USA
| | | | | | | | | |
Collapse
|
49
|
Karanikas V, Zamanakou M, Soukou F, Kerenidi T, Gourgoulianis KI, Germenis AE. Naturally occurring tumor‐specific CD8
+
T‐cell precursors in individuals with and without cancer. Immunol Cell Biol 2010; 88:575-85. [DOI: 10.1038/icb.2010.8] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Vaios Karanikas
- Cancer Immunology Unit, Department of Immunology & Histocompatibility, School of Medicine, University of Thessaly Larissa Greece
| | - Maria Zamanakou
- Cancer Immunology Unit, Department of Immunology & Histocompatibility, School of Medicine, University of Thessaly Larissa Greece
| | - Faye Soukou
- Cancer Immunology Unit, Department of Immunology & Histocompatibility, School of Medicine, University of Thessaly Larissa Greece
| | - Theodora Kerenidi
- Department of Respiratory Medicine, School of Medicine, University of Thessaly, University Hospital of Larissa Larissa Greece
| | - Konstantinos I Gourgoulianis
- Department of Respiratory Medicine, School of Medicine, University of Thessaly, University Hospital of Larissa Larissa Greece
| | - Anastasios E Germenis
- Cancer Immunology Unit, Department of Immunology & Histocompatibility, School of Medicine, University of Thessaly Larissa Greece
| |
Collapse
|
50
|
Melief C. Migration or evasion. Nat Med 2010; 16:35-6. [PMID: 20057423 DOI: 10.1038/nm0110-35] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|