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Qiu Y, Yun MM, Dong X, Xu M, Zhao R, Han X, Zhou E, Yun F, Su W, Liu C, Zhao H, Tong X, Gao J, Ouyang X, Yun S. Combination of cytokine-induced killer and dendritic cells pulsed with antigenic α-1,3-galactosyl epitope-enhanced lymphoma cell membrane for effective B-cell lymphoma immunotherapy. Cytotherapy 2016; 18:91-8. [PMID: 26549382 DOI: 10.1016/j.jcyt.2015.09.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2015] [Revised: 09/14/2015] [Accepted: 09/21/2015] [Indexed: 01/01/2023]
Abstract
BACKGROUND AIMS Refractory B-cell lymphomas are difficult to successfully treat with current chemotherapeutic regimens; however, immunotherapy may be an effective form of treatment for these patients. METHODS Fourteen refractory lymphoma patients (age, 29-74 y) were enrolled in the trial. α-1,3-galactosyl (α-Gal) epitopes were synthesized on lymphoma cell membranes with the use of bovine recombinant α-1,3-galactosyltransferase (α-GT) and neuraminidase to enhance tumor immunogenicity. Subsequent incubation of processed cell membranes with autologous dendritic cells (DCs) in the presence of human serum containing abundant natural anti-α-Gal immunoglobulin G led to the effective phagocytosis of tumor membranes by DCs. The pulsed DCs and autologous cytokine-induced killer cells were then co-cultured to promote maximum cytotoxicity to lymphoma cells and were infused back into the donor lymphoma patients. Therapeutic responses were assessed by clinical observation, laboratory tests and a computed tomography scan at 6 months after treatment. RESULTS Complete and partial remission occurred in four and three patients, respectively. The disease status remained unchanged in five patients, and disease progression was observed in two patients. No serious side effects or autoimmune diseases were observed in any participants. Serum lactate dehydrogenase and β2-macroglobulin decreased in 11 and 14 patients, respectively. All patients showed robust systemic cytotoxicity in response to tumor lysate as measured by interferon-γ expression in peripheral blood mononuclear cells after treatment (P < 0.001). The number of peripheral immune effector cells (CD3(+)/CD4(+), CD8(+)/CD28(+) and CD16(+)/CD56(+) cells) increased significantly (P < 0.05) 3 months after treatment. CONCLUSIONS Lymphoma cell-specific α-Gal immunotherapy is safe, effective and has great potential for the treatment of refractory B-cell lymphoma.
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Affiliation(s)
- Ying Qiu
- Affiliated Hospital of Inner Mongolia Medical University, Hohhot, China
| | - Mark M Yun
- Heart of England National Health Service Foundation Trust, Bordesley Green, East Birmingham, UK
| | - Xuebin Dong
- Guy's and St Thomas' Hospital National Health Service Foundation Trust, London, UK
| | - Mingbao Xu
- Beijing Armed Police General Hospital, Beijing, China
| | - Ruidong Zhao
- Affiliated Hospital of Inner Mongolia Medical University, Hohhot, China
| | - Xia Han
- Affiliated Hospital of Inner Mongolia Medical University, Hohhot, China
| | - Erxia Zhou
- Affiliated Hospital of Inner Mongolia Medical University, Hohhot, China
| | - Feiyu Yun
- Affiliated Hospital of Inner Mongolia Medical University, Hohhot, China
| | - Wuyun Su
- Affiliated Hospital of Inner Mongolia Medical University, Hohhot, China
| | - Caixia Liu
- Affiliated Hospital of Inner Mongolia Medical University, Hohhot, China
| | - Haiyan Zhao
- Affiliated Hospital of Inner Mongolia Medical University, Hohhot, China
| | - Xin Tong
- Second Hospital of Lanzhou University, Lanzhou, China
| | - Jin Gao
- Jing-Meng Stem Cell Company, Beijing, China
| | - Xiaohui Ouyang
- Affiliated Hospital of Inner Mongolia Medical University, Hohhot, China
| | - Sheng Yun
- Affiliated Hospital of Inner Mongolia Medical University, Hohhot, China.
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Ogawa H, Galili U. Profiling terminal N-acetyllactosamines of glycans on mammalian cells by an immuno-enzymatic assay. Glycoconj J 2006; 23:663-74. [PMID: 17115279 DOI: 10.1007/s10719-006-9005-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2006] [Revised: 05/07/2006] [Accepted: 07/19/2006] [Indexed: 11/26/2022]
Abstract
Profiling of carbohydrate structures on cell membranes has been difficult to perform because of the complexity and the variations of such structures on cell surface glycans. This study presents a novel method for rapid profiling of cell surface glycans for terminal N-acetyllactosamines (Galbeta1-(3)4GlcNAc-R) that are uncapped, capped with sialic acid as SA-Galbeta1-(3)4GlcNAc-R, or with alpha1,3galactosyls as the alpha-gal epitope- Galalpha1-3Galbeta1-(3)4GlcNAc-R. This method includes two enzymatic reactions: (1) Terminal sialic acid is removed by neuraminidase, and (2) alpha-gal epitopes are synthesized on the exposed N-acetyllactosamines by alpha1,3galactosyltransferase. Existing and de novo synthesized alpha-gal epitopes on cells are quantified by a modification of radioimmunoassay designated as "ELISA inhibition assay," which measures binding of the monoclonal anti-Gal antibody M86 to alpha-gal epitopes. This binding is proportional to the number of cell surface alpha-gal epitopes. The amount of free M86 antibody molecules remaining in the solution is determined by ELISA using synthetic alpha-gal epitopes linked to albumin as solid phase antigen. The number of alpha-gal epitopes on cells is estimated by comparing binding curves of M86 incubated with the assayed cells, at various concentrations of the cells, with the binding of M86 to rabbit red cells expressing 2 x 10(6) alpha-gal epitopes/cell. We could demonstrate large variations in the number of sialic acid capped N-acetyllactosamines, alpha-gal epitopes and uncapped N-acetyllactosamines on different mammalian red blood cells, and on nucleated cells originating from a given tissue in various species. This method may be useful for rapid identification of changes in glycosylation patterns in cells subjected to various treatments, or in various states of differentiation.
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Affiliation(s)
- Haruko Ogawa
- Division of Hematology/Oncology, Department of Medicine, University of Massachusetts Medical School, Worcester, MA 01605, USA
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Litjens REJN, Hoogerhout P, Filippov DV, Codée JDC, van den Bos LJ, van den Berg RJBHN, Overkleeft HS, van der Marel GA. Synthesis of an α‐Gal epitope α‐D‐Galp‐(1→3)‐β‐D‐Galp‐(1→4)‐β‐D‐Glcp NAc–lipid conjugate. J Carbohydr Chem 2006. [DOI: 10.1080/07328300500308113] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
| | - Peter Hoogerhout
- b Unit Research and Development , The Netherlands Vaccine Institute , Bilthoven, The Netherlands
| | - Dmitri V. Filippov
- a Leiden Institute of Chemistry , Leiden University , Leiden, The Netherlands
| | - Jeroen D. C. Codée
- a Leiden Institute of Chemistry , Leiden University , Leiden, The Netherlands
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Galili U. The alpha-gal epitope and the anti-Gal antibody in xenotransplantation and in cancer immunotherapy. Immunol Cell Biol 2005; 83:674-86. [PMID: 16266320 DOI: 10.1111/j.1440-1711.2005.01366.x] [Citation(s) in RCA: 248] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The alpha-gal epitope (Galalpha1-3Galbeta1-(3)4GlcNAc-R) is abundantly synthesized on glycolipids and glycoproteins of non-primate mammals and New World monkeys by the glycosylation enzyme alpha1,3galactosyltransferase (alpha1,3GT). In humans, apes and Old World monkeys, this epitope is absent because the alpha1,3GT gene was inactivated in ancestral Old World primates. Instead, humans, apes and Old World monkeys produce the anti-Gal antibody, which specifically interacts with alpha-gal epitopes and which constitutes approximately 1% of circulating immunoglobulins. Anti-Gal has functioned as an immunological barrier, preventing the transplantation of pig organs into humans, because anti-Gal binds to the alpha-gal epitopes expressed on pig cells. The recent generation of alpha1,3GT knockout pigs that lack alpha-gal epitopes has resulted in the elimination of this immunological barrier. Anti-Gal can be exploited for clinical use in cancer immunotherapy by targeting autologous tumour vaccines to APC, thereby increasing their immunogenicity. Autologous intact tumour cells from haematological malignancies, or autologous tumour cell membranes from solid tumours are processed to express alpha-gal epitopes by incubation with neuraminidase, recombinant alpha1,3GT and with uridine diphosphate galactose. Subsequent immunization with such autologous tumour vaccines results in in vivo opsonization by anti-Gal IgG binding to these alpha-gal epitopes. The interaction of the Fc portion of the vaccine-bound anti-Gal with Fcgamma receptors of APC induces effective uptake of the vaccinating tumour cell membranes by the APC, followed by effective transport of the vaccinating tumour membranes to the regional lymph nodes, and processing and presentation of the tumour-associated antigen (TAA) peptides. Activation of tumour-specific T cells within the lymph nodes by autologous TAA peptides may elicit an immune response that in some patients will be potent enough to eradicate the residual tumour cells that remain after completion of standard therapy. A similar expression of alpha-gal epitopes can be achieved by transduction of tumour cells with an adenovirus vector (or other vectors) containing the alpha1,3GT gene, thus enabling anti-Gal-mediated targeting of the vaccinating transduced cells to APC. Intratumoral delivery of the alpha1,3GT gene by various vectors results in the expression of alpha-gal epitopes. Such expression of the xenograft carbohydrate phenotype is likely to induce anti-Gal-mediated destruction of the tumour lesion, similar to rejection of xenografts by this antibody. Opsonization of the destroyed tumour cell membranes by anti-Gal IgG further targets them to APC, thus converting the tumour lesion, treated by the alpha1,3GT gene, into an in situ autologous tumour vaccine.
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Affiliation(s)
- Uri Galili
- Division of Hematology/Oncology, Department of Medicine, University of Massachusetts Medical School, Worcester, Massachusetts 01605, USA.
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Rapoport AP. Immunity for tumors and microbes after autotransplantation: if you build it, they will (not) come. Bone Marrow Transplant 2005; 37:239-47. [PMID: 16327812 DOI: 10.1038/sj.bmt.1705242] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Relapses after autologous stem cell transplants for hematopoietic malignancies are frequent and post-transplant infections continue to cause significant post-transplant morbidity and even mortality. The post-transplant period is typically characterized by low lymphocyte counts and impaired immune cell function. Early restoration of immune function may contribute to better disease control and enhance protection from infections. Indeed the attainment of a 'minimal residual disease' status following high-dose therapy makes the early post-transplant period ideal for the introduction of antitumor immunotherapy. Attempts to generate immunity against tumor and microbial antigens after autotransplantation have included vaccinations, T cell infusions (both resting and activated) and combinations of vaccinations and adoptive T cell infusions. One successful strategy for generating robust immune responses against microbial antigens was the combination of pre and post-transplant immunizations along with an early (post-transplant) infusion of in vivo vaccine-primed and ex vivo co-stimulated autologous T cells. Whether this or similar strategies will lead to the generation of effective antitumor immunity is unknown. The lessons gained from efforts to rebuild immune system function in the setting of autotransplantation may also be applicable to the problem of restoring immunity in other immunodeficient groups such as patients with cancer or HIV disease and the elderly.
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Affiliation(s)
- A P Rapoport
- University of Maryland Marlene and Stewart Greenebaum Cancer Center, Baltimore, MD 21201, USA.
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Deriy L, Ogawa H, Gao GP, Galili U. In vivo targeting of vaccinating tumor cells to antigen-presenting cells by a gene therapy method with adenovirus containing the α1,3galactosyltransferase gene. Cancer Gene Ther 2005; 12:528-39. [PMID: 15818383 DOI: 10.1038/sj.cgt.7700812] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Poor uptake by antigen-presenting cells (APC) is a major reason for low immunogenicity of autologous tumor vaccines. This immunogenicity may be increased by exploiting the natural anti-Gal antibody that is present in humans as approximately 1% of circulating IgG. Anti-Gal binds to alpha-gal epitopes (Galalpha1-3Galbeta1-4GlcNAc-R) on vaccinating tumor cells and opsonizes them for effective uptake by APC. This epitope is synthesized in human tumor cells by transduction with AdalphaGT- a replication deficient adenovirus containing the alpha1,3galactosyltransferase (alpha1,3GT) gene. Protection against tumors by immunization with AdalphaGT-transduced tumor cells was studied in alpha1,3GT knockout (KO) mice, challenged with the highly tumorigenic BL6 melanoma cells. These mice lack alpha-gal epitopes and can produce anti-Gal. Immunization of KO mice with AdalphaGT-transduced BL6 cells protects many of the mice against challenge with live BL6 cells lacking alpha-gal epitopes. Immunization with AdalphaGT transduced autologous tumor cells may serve as adjuvant immunotherapy delivered after completion of standard therapy. This method may complement another gene therapy method in which GM-CSF-secreting vaccinating tumor cells recruit APC to vaccination sites. Anti-Gal-opsonized vaccinating tumor cells will be effectively internalized by GM-CSF recruited APC and transported to draining lymph nodes for processing and presentation of tumor antigens. Alternatively, injection of AdalphaGT directly into solid tumor masses of cancer patients may result in anti-Gal-mediated destruction of the transduced tumor cells in a manner similar to xenograft rejection. The subsequent uptake of anti-Gal-opsonized tumor membranes by APC results in their effective transportation to lymph nodes where processed tumor antigens may elicit a protective antitumor immune response.
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Affiliation(s)
- Lucy Deriy
- Department of Neurobiology, Physiology and Pharmacology, University of Chicago, Chicago, IL, USA
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Wang D, Lu J. Glycan arrays lead to the discovery of autoimmunogenic activity of SARS-CoV. Physiol Genomics 2004; 18:245-8. [PMID: 15161967 PMCID: PMC7191399 DOI: 10.1152/physiolgenomics.00102.2004] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2004] [Accepted: 05/13/2004] [Indexed: 11/22/2022] Open
Abstract
Using carbohydrate microarrays, we characterized the carbohydrate binding activity of SARS-CoV neutralizing antibodies elicited by an inactivated SARS-CoV vaccine. In these antibodies, we detected undesired autoantibody reactivity specific for the carbohydrate moieties of an abundant human serum glycoprotein asialo-orosomucoid (ASOR). This observation provides important clues for the selection of specific immunologic probes to examine whether SARS-CoV expresses antigenic structures that mimic the host glycan. We found that lectin PHA-L (Phaseolus vulgaris L.), which is specific for a defined complex carbohydrate of ASOR, stained the SARS-CoV-infected cells specifically and intensively. Taken together, we present immunologic evidence that a carbohydrate structure of SARS-CoV shares antigenic similarity with host glycan complex carbohydrates. The experimental approaches we applied in this study are likely applicable for the identification of immunologic targets of other viral pathogens.
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Affiliation(s)
- Denong Wang
- Columbia Genome Center, College of Physicians and Surgeons, Columbia University, New York, New York 10032, USA
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Galili U, Chen ZC, DeGeest K. Expression of alpha-gal epitopes on ovarian carcinoma membranes to be used as a novel autologous tumor vaccine. Gynecol Oncol 2003; 90:100-8. [PMID: 12821349 DOI: 10.1016/s0090-8258(03)00148-3] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
OBJECTIVE Poor presentation of tumor-associated antigens (TAA) to the immune system remains a major obstacle to effective anti-tumor vaccine therapy. The aim of this study is to demonstrate the feasibility of producing a novel autologous tumor vaccine from ovarian carcinoma that is expected to have increased immunogenicity. The strategy is based on the ability of the anti-Gal IgG antibody (a natural antibody comprising 1% of IgG in humans) to target tumor membranes expressing alpha-gal epitopes (Galalpha1-3Galbeta1-4GlcNAc-R) to antigen-presenting cells (APC). STUDY DESIGN Freshly obtained ovarian carcinoma tumors are homogenized, washed, and incubated with a mixture of neuraminidase, recombinant alpha1,3 galactosyltransferase (ralpha1,3GT) and uridine diphosphate galactose (UDP-Gal) to synthesize alpha-gal epitopes on carbohydrate chains of glycoproteins of these membranes. Subsequently, the processed membranes are analyzed for expression of alpha-gal epitopes and for the binding of anti-Gal. RESULTS Incubation of 3 g of ovarian carcinoma membranes, from five different patients, at 100 mg/ml, mixed together with ralpha1,3GT (50 microg/ml), neuraminidase (1 mU/ml), and UDP-Gal (2 mM), resulted in the effective synthesis of alpha-gal epitopes to the extent of approximately 2 x 10(11) epitopes/mg of tumor membranes. As a result of this de novo expression of alpha-gal epitopes, the tumor membranes readily bound purified anti-Gal antibody, as well as anti-Gal in autologous serum. CONCLUSIONS The method described in this study is very effective in the synthesis of many alpha-gal epitopes on tumor membranes obtained from ovarian carcinoma. These novel epitopes readily bind the naturally occurring anti-Gal antibody. This technique of opsonization of alpha-gal-modified autologous tumor membranes carrying TAA is expected to increase effective uptake of the vaccine by APC, which is key to successful anti-tumor vaccination.
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Affiliation(s)
- Uri Galili
- Department of Cardiovascular Thoracic Surgery, Rush University, Chicago, IL 60612, USA
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Abstract
Reports of novel developments in tumor vaccines that have appeared in the year ending May 1, 2002 are reviewed here. Antigenic moieties were revealed for tumors previously considered nonimmunogenic. The use of peptides spanning mutations detected exclusively in tumor tissue avoids the common concern for autoimmune responses. Carbohydrate biology is revealing novel antigenic moieties. The search for helper epitopes from tumor antigens has come into full swing. Humoral immunity is regaining terrain, particularly through the development of antiidiotypic antibodies. Major steps forward have been made in optimizing modes and routes of antigen delivery and in the use of immune adjuvants. In the clinic, phase I/II trials support the notion that tumor vaccines are safe. Because these trials are conducted in patients in whom tumor remission is not a realistic endpoint, patient responses were established by immune monitoring strategies to detect subtle changes in antitumor reactivity. Both clinical and laboratory data stress the vast potential of tumor vaccines for the treatment of cancer.
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Affiliation(s)
- I Caroline Le Poole
- Cardinal Bernardin Cancer Center, Cancer Immunology Program, Loyola University, Chicago, Illinois, USA
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