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Segú-Vergés C, Caño S, Calderón-Gómez E, Bartra H, Sardon T, Kaveri S, Terencio J. Systems biology and artificial intelligence analysis highlights the pleiotropic effect of IVIg therapy in autoimmune diseases with a predominant role on B cells and complement system. Front Immunol 2022; 13:901872. [PMID: 36248801 PMCID: PMC9563374 DOI: 10.3389/fimmu.2022.901872] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Accepted: 08/31/2022] [Indexed: 11/26/2022] Open
Abstract
Intravenous immunoglobulin (IVIg) is used as treatment for several autoimmune and inflammatory conditions, but its specific mechanisms are not fully understood. Herein, we aimed to evaluate, using systems biology and artificial intelligence techniques, the differences in the pathophysiological pathways of autoimmune and inflammatory conditions that show diverse responses to IVIg treatment. We also intended to determine the targets of IVIg involved in the best treatment response of the evaluated diseases. Our selection and classification of diseases was based on a previously published systematic review, and we performed the disease characterization through manual curation of the literature. Furthermore, we undertook the mechanistic evaluation with artificial neural networks and pathway enrichment analyses. A set of 26 diseases was selected, classified, and compared. Our results indicated that diseases clearly benefiting from IVIg treatment were mainly characterized by deregulated processes in B cells and the complement system. Indeed, our results show that proteins related to B-cell and complement system pathways, which are targeted by IVIg, are involved in the clinical response. In addition, targets related to other immune processes may also play an important role in the IVIg response, supporting its wide range of actions through several mechanisms. Although B-cell responses and complement system have a key role in diseases benefiting from IVIg, protein targets involved in such processes are not necessarily the same in those diseases. Therefore, IVIg appeared to have a pleiotropic effect that may involve the collaborative participation of several proteins. This broad spectrum of targets and 'non-specificity' of IVIg could be key to its efficacy in very different diseases.
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Affiliation(s)
| | - Silvia Caño
- Grifols Innovation and New Technologies (GIANT) Ltd., Dublin, Ireland
| | | | - Helena Bartra
- Health Department, Anaxomics Biotech, Barcelona, Spain
| | - Teresa Sardon
- Health Department, Anaxomics Biotech, Barcelona, Spain
| | - Srini Kaveri
- Institut National de la Santé et de la Recherche Médicale, Centre de Recherche des Cordeliers, Sorbonne Université, Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - José Terencio
- Grifols Innovation and New Technologies (GIANT) Ltd., Dublin, Ireland
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Simón-Fuentes M, Sánchez-Ramón S, Fernández-Paredes L, Alonso B, Guevara-Hoyer K, Vega MA, Corbí AL, Domínguez-Soto Á. Intravenous Immunoglobulins Promote an Expansion of Monocytic Myeloid-Derived Suppressor Cells (MDSC) in CVID Patients. J Clin Immunol 2022; 42:1093-1105. [PMID: 35486340 PMCID: PMC9053130 DOI: 10.1007/s10875-022-01277-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Accepted: 04/18/2022] [Indexed: 11/30/2022]
Abstract
Common variable immunodeficiency disorders (CVID), the most common primary immune deficiency, includes heterogeneous syndromes characterized by hypogammaglobulinemia and impaired antibody responses. CVID patients frequently suffer from recurrent infections and inflammatory conditions. Currently, immunoglobulin replacement therapy (IgRT) is the first-line treatment to prevent infections and aminorate immune alterations in CVID patients. Intravenous Immunoglobulin (IVIg), a preparation of highly purified poly-specific IgG, is used for treatment of immunodeficiencies as well as for autoimmune and inflammatory disorders, as IVIg exerts immunoregulatory and anti-inflammatory actions on innate and adaptive immune cells. To determine the mechanism of action of IVIg in CVID in vivo, we determined the effect of IVIg infusion on the transcriptome of peripheral blood mononuclear cells from CVID patients, and found that peripheral blood monocytes are primary targets of IVIg in vivo, and that IVIg triggers the acquisition of an anti-inflammatory gene profile in human monocytes. Moreover, IVIg altered the relative proportions of peripheral blood monocyte subsets and enhanced the proportion of CD14+ cells with a transcriptional, phenotypic, and functional profile that resembles that of monocytic myeloid-derived suppressor cells (MDSC). Therefore, our results indicate that CD14 + MDSC-like cells might contribute to the immunoregulatory effects of IVIg in CVID and other inflammatory disorders.
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Affiliation(s)
- Miriam Simón-Fuentes
- Myeloid Cell Laboratory, Centro de Investigaciones Biológicas, CSIC, Ramiro de Maeztu, 9, 28040, Madrid, Spain
| | | | | | - Bárbara Alonso
- Myeloid Cell Laboratory, Centro de Investigaciones Biológicas, CSIC, Ramiro de Maeztu, 9, 28040, Madrid, Spain.,Hospital Universitario Clínico San Carlos, IML and IdSSC, Madrid, Spain
| | | | - Miguel A Vega
- Myeloid Cell Laboratory, Centro de Investigaciones Biológicas, CSIC, Ramiro de Maeztu, 9, 28040, Madrid, Spain
| | - Angel L Corbí
- Myeloid Cell Laboratory, Centro de Investigaciones Biológicas, CSIC, Ramiro de Maeztu, 9, 28040, Madrid, Spain.
| | - Ángeles Domínguez-Soto
- Myeloid Cell Laboratory, Centro de Investigaciones Biológicas, CSIC, Ramiro de Maeztu, 9, 28040, Madrid, Spain.
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Danieli MG, Verga JU, Mezzanotte C, Terrenato I, Svegliati S, Bilo MB, Moroncini G. Replacement and Immunomodulatory Activities of 20% Subcutaneous Immunoglobulin Treatment: A Single-Center Retrospective Study in Autoimmune Myositis and CVID Patients. Front Immunol 2022; 12:805705. [PMID: 35111165 PMCID: PMC8801806 DOI: 10.3389/fimmu.2021.805705] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Accepted: 12/27/2021] [Indexed: 12/27/2022] Open
Abstract
Background Immunoglobulin (Ig) replacement therapy represents a life-saving treatment in primary antibody deficiencies. The introduction of subcutaneous Ig (SCIg) administration brings a major improvement in quality of life for patients, compared to the traditional intravenous administration. In recent years, an additional role has been proposed for Ig therapy for various inflammatory and immune-mediated diseases. Consequently, the use of SCIg has expanded from immunodeficiencies to immune-mediated diseases, such as polymyositis (PM) and dermatomyositis (DM). Given the rarity of these conditions, it is still difficult to evaluate the real impact of SCIg treatment on PM and DM, and additional data are constantly required on this topic, particularly for long-term treatments in real-life settings. Aim This study aimed to increase the knowledge about the anti-inflammatory and immunomodulatory effects of SCIg treatment for myositis. To this aim, a long-term evaluation of the effectiveness of 20% human SCIg treatment (20% SCIg, Hizentra®, CSL Behring) was carried out in patients with PM/DM in care at our Center. In addition, an evaluation of the 20% SCIg therapy in CVID patients was provided. This analysis, beside adding knowledge about the use of SCIg therapy in this real-life setting, was intended as a term of comparison, regarding the safety profile. Results Results support the beneficial effect and tolerability of long-term 20% SCIg therapy in PM/DM patients, reporting a significant improvement in creatine kinase levels, muscle strength, skin conditions, dysphagia, disease activity (MITAX score) and disability (HAQ-DI score). None of the patients reported systemic reactions. The duration of the reported local reactions was a few hours in 80% of the patients, and all resolved spontaneously. CVID patients reported an improvement in all the considered effectiveness parameters at the end of 20% SCIg therapy. The frequency of the adverse events reported by PM/DM patients was not different from what reported in CVID patients, where the use of SCIg therapy is more consolidated Conclusions This study suggests that 20% SCIg treatment represents a viable and safe treatment for PM/DM patients and a valid therapeutic alternative to IVIg, with important advantages for patients’ quality of life.
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Affiliation(s)
- Maria Giovanna Danieli
- Department of Clinical and Molecular Sciences, Marche Polytechnic University, Ancona, Italy.,Clinica Medica, Department of Internal Medicine, Ospedali Riuniti, Ancona, Italy
| | - Jacopo Umberto Verga
- Department of Life and Environmental Sciences, Polytechnic University of Marche, Ancona, Italy.,The Science Foundation Ireland (SFI) Centre for Research Training in Genomics Data Science, National University of Ireland, Galway, Ireland
| | - Cristina Mezzanotte
- Internal Medicine Residency Program, Marche Polytechnic University, Ancona, Italy
| | - Irene Terrenato
- Biostatistics and Bioinformatic Unit, Scientific Direction, IRCCS Regina Elena Cancer Institute, Rome, Italy
| | - Silvia Svegliati
- Department of Clinical and Molecular Sciences, Marche Polytechnic University, Ancona, Italy
| | - Maria Beatrice Bilo
- Department of Clinical and Molecular Sciences, Marche Polytechnic University, Ancona, Italy.,Allergy Unit, Department of Internal Medicine, Ospedali Riuniti, Ancona, Italy
| | - Gianluca Moroncini
- Department of Clinical and Molecular Sciences, Marche Polytechnic University, Ancona, Italy.,Clinica Medica, Department of Internal Medicine, Ospedali Riuniti, Ancona, Italy
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Liu X, He Z, Qu Y, Meng Q, Qin L, Hu Y. Circulating Natural Autoantibodies to HER2-Derived Peptides Performed Antitumor Effects on Oral Squamous Cell Carcinoma. Front Pharmacol 2021; 12:693989. [PMID: 34803666 PMCID: PMC8602057 DOI: 10.3389/fphar.2021.693989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Accepted: 10/19/2021] [Indexed: 11/13/2022] Open
Abstract
Natural autoantibodies play a crucial role in destruction of malignant tumors due to immune surveillance function. Epidermal growth factor receptor 2 (HER2) has been found to be highly expressed in a variety of epithelial tumors including oral squamous cell carcinoma (OSCC). The present study was thus undertaken to investigate the effect of anti-HER2 natural autoantibodies on OSCC. Compared with cancer-adjacent tissues, cancer tissues from OSCC patients exhibited higher HER2 expression especially in those with middle & advanced stage OSCC. Plasma anti-HER2 IgG levels examined with an enzyme-linked immunosorbent assay (ELISA) developed in-house showed differences between control subjects, individuals with oral benign tumor and patients with OSCC. In addition, anti-HER2 IgG-abundant plasma was screened from healthy donors to treat OSCC cells and to prepare for anti-HER2 intravenous immunoglobulin (IVIg). Both anti-HER2 IgG-abundant plasma and anti-HER2 IVIg could significantly inhibit proliferation and invasion of OSCC cells by inducing the apoptosis, and also regulate apoptosis-associated factors and epithelial-mesenchymal transition (EMT), respectively. Besides, the complement-dependent cytotoxicity (CDC) pathway was likely to contribute to the anti-HER2 IgG mediated inhibition of OSCC cells. After the HER2 gene was knocked down with HER2-specific siRNAs, the inhibitory effects on OSCC cell proliferation and apoptotic induction faded away. In conclusion, human plasma IgG, or IVIg against HER2 may be a promising agent for anti-OSCC therapy.
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Affiliation(s)
- Xiu Liu
- Beijing Institute of Dental Research, Beijing Stomatological Hospital, Capital Medical University, Beijing, China
| | - Ziyi He
- Department of Transfusion Research, Dongguan Blood Center, Dongguan, China
| | - Yi Qu
- Department of Oral and Maxillofacial and Head and Neck Oncology, Beijing Stomatological Hospital, Capital Medical University, Beijing, China
| | - Qingyong Meng
- Laboratory for Nursing Science and Institute of Laboratory Medicine, Guangdong Medical University, Dongguan, China
| | - Lizheng Qin
- Department of Oral and Maxillofacial and Head and Neck Oncology, Beijing Stomatological Hospital, Capital Medical University, Beijing, China
| | - Ying Hu
- Beijing Institute of Dental Research, Beijing Stomatological Hospital, Capital Medical University, Beijing, China
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Nakamura H, Hanafusa N, Kitamura K, Nakamura H, Sekihara H, Shimizu K, Anayama M, Makino Y, Tamura K, Nagasawa M. Biochemical evaluation of processed ascites in patients undergoing cell-free and concentrated ascites reinfusion therapy. Ther Apher Dial 2020; 24:516-523. [PMID: 32524759 DOI: 10.1111/1744-9987.13541] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The biochemical composition of processed ascites is not well researched and may differ among institutions. This prospective study was conducted to evaluate the biochemical characteristics of processed ascites of 11 patients with liver cirrhosis and carcinoma who underwent cell-free and concentrated ascites reinfusion therapy. The ascites due to carcinoma were more acidic and had higher lactate dehydrogenase activity than those due to liver cirrhosis. The ascites due to liver cirrhosis contained a higher amount of immunoglobulin than those due to carcinoma. Immunoglobulin preparations were approximately 2.95% IgG in liver cirrhosis ascites and 2.25% IgG in carcinoma ascites. Moreover, the concern about IgA infusion in the patient with IgA deficiency made it important to identify the source of the ascites. The present study provided fundamental information regarding the safety of cell-free and concentrated ascites reinfusion therapy.
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Affiliation(s)
| | - Norio Hanafusa
- Department of Blood Purification, Kidney Center, Tokyo Women's Medical Hospital, Tokyo, Japan
| | - Kentaro Kitamura
- Department of Clinical engineering, Shinonoi General Hospital, Nagano, Japan
| | - Hiroaki Nakamura
- Department of Clinical engineering, Shinonoi General Hospital, Nagano, Japan
| | - Hiroyuki Sekihara
- Department of Clinical engineering, Shinonoi General Hospital, Nagano, Japan
| | - Kazuaki Shimizu
- Department of Clinical engineering, Shinonoi General Hospital, Nagano, Japan
| | - Mariko Anayama
- Department of Nephrology, Shinonoi General Hospital, Nagano, Japan
| | - Yasushi Makino
- Department of Nephrology, Shinonoi General Hospital, Nagano, Japan
| | - Katsuhiko Tamura
- Department of Nephrology, Shinonoi General Hospital, Nagano, Japan
| | - Masaki Nagasawa
- Department of Nephrology, Shinonoi General Hospital, Nagano, Japan
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Jiang Z, Albanese J, Kesterson J, Warrick J, Karabakhtsian R, Dadachova E, Phaëton R. Monoclonal Antibodies Against Human Papillomavirus E6 and E7 Oncoproteins Inhibit Tumor Growth in Experimental Cervical Cancer. Transl Oncol 2019; 12:1289-1295. [PMID: 31325765 PMCID: PMC6642219 DOI: 10.1016/j.tranon.2019.06.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Revised: 06/13/2019] [Accepted: 06/17/2019] [Indexed: 12/09/2022] Open
Abstract
Nearly all cases of cervical cancer are initiated by persistent infection with high-risk strains of human papillomavirus (hr-HPV). When hr-HPV integrates into the host genome, the constitutive expression of oncogenic HPV proteins E6 and E7 function to disrupt p53 and retinoblastoma regulation of cell cycle, respectively, to favor malignant transformation. HPV E6 and E7 are oncogenes found in over 99% of cervical cancer, they are also expressed in pre-neoplastic stages making these viral oncoproteins attractive therapeutic targets. Monoclonal antibodies (mAbs) represent a novel potential approach against the actions of hr-HPV E6 and E7 oncoproteins. In this report, we describe the utilization of anti-HPV E6 and HPV E7 mAbs in an experimental murine model of human cervical cancer tumors. We used differential dosing strategies of mAbs C1P5 (anti-HPV 16 E6) and TVG701Y (anti-HPV E7) administered via intraperitoneal or intratumoral injections. We compared mAbs to the action of chemotherapeutic agent Cisplatin and demonstrated the capacity of mAbs to significantly inhibit tumor growth. Furthermore, we investigated the contribution of the immune system and found increased complement deposition in both C1P5 and TVG701Y treated tumors compared to irrelevant mAb therapy. Taken together, the results suggest that anti-HPV E6 and E7 mAbs exert inhibition of tumor growth in a viral-specific manner and stimulate an immune response that could be exploited for an additional treatment options for patients.
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Affiliation(s)
- Zewei Jiang
- Albert Einstein College of Medicine, Montefiore Medical Center, Department of Radiology, 1300 Morris Park Avenue, Bronx, NY 10461, United States.
| | - Joseph Albanese
- Albert Einstein College of Medicine, Montefiore Medical Center, 111 East 210(th) Street Avenue, Bronx, NY 10467, United States.
| | - Joshua Kesterson
- Penn State College of Medicine, Milton S. Hershey Medical Center, Department of Obstetrics and Gynecology, Division of Gynecologic Oncology, 500 University Avenue, Mail Code H103, Hershey, PA 17033.
| | - Joshua Warrick
- Penn State College of Medicine, Milton S. Hershey Medical Center, Department of Pathology, 500 University Avenue, Hershey, PA 17033, United States.
| | - Rouzan Karabakhtsian
- Albert Einstein College of Medicine, Montefiore Medical Center, 1300 Morris Park Avenue, Bronx, NY 10461, United States.
| | - Ekaterina Dadachova
- University of Saskatchewan, College of Pharmacy and Nutrition, 107 Wiggins Rd, Health Sciences Blvd, Box 3D01-11, Saskatoon, Saskatchewan, S7N 5E5, Canada.
| | - Rébécca Phaëton
- Penn State College of Medicine, Departments of Obstetrics and Gynecology and Microbiology and Immunology, Division of Gynecologic Oncology, 500 University Drive, Mail Code H103, Hershey, PA 17033.
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Domínguez-Soto Á, Simón-Fuentes M, de Las Casas-Engel M, Cuevas VD, López-Bravo M, Domínguez-Andrés J, Saz-Leal P, Sancho D, Ardavín C, Ochoa-Grullón J, Sánchez-Ramón S, Vega MA, Corbí AL. IVIg Promote Cross-Tolerance against Inflammatory Stimuli In Vitro and In Vivo. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2018; 201:41-52. [PMID: 29743313 DOI: 10.4049/jimmunol.1701093] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Accepted: 04/18/2018] [Indexed: 01/25/2023]
Abstract
IVIg is an approved therapy for immunodeficiency and for several autoimmune and inflammatory diseases. However, the molecular basis for the IVIg anti-inflammatory activity remains to be fully explained and cannot be extrapolated from studies on animal models of disease. We now report that IVIg impairs the generation of human monocyte-derived anti-inflammatory macrophages by inducing JNK activation and activin A production and limits proinflammatory macrophage differentiation by inhibiting GM-CSF-driven STAT5 activation. In vivo, IVIg provokes a rapid increase in peripheral blood activin A, CCL2, and IL-6 levels, an effect that can be recapitulated in vitro on human monocytes. On differentiating monocytes, IVIg promotes the acquisition of altered transcriptional and cytokine profiles, reduces TLR expression and signaling, and upregulates negative regulators of TLR-initiated intracellular signaling. In line with these effects, in vivo IVIg infusion induces a state tolerant toward subsequent stimuli that results in reduced inflammatory cytokine production after LPS challenge in human peripheral blood and significant protection from LPS-induced death in mice. Therefore, IVIg conditions human macrophages toward the acquisition of a state of cross-tolerance against inflammatory stimuli, an effect that correlates with the net anti-inflammatory action of IVIg in vivo.
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Affiliation(s)
- Ángeles Domínguez-Soto
- Departamento de Biología Celular, Centro de Investigaciones Biológicas, Consejo Superior de Investigaciones Cientificas, 28040 Madrid, Spain;
| | - Miriam Simón-Fuentes
- Departamento de Biología Celular, Centro de Investigaciones Biológicas, Consejo Superior de Investigaciones Cientificas, 28040 Madrid, Spain
| | - Mateo de Las Casas-Engel
- Departamento de Biología Celular, Centro de Investigaciones Biológicas, Consejo Superior de Investigaciones Cientificas, 28040 Madrid, Spain
| | - Víctor D Cuevas
- Departamento de Biología Celular, Centro de Investigaciones Biológicas, Consejo Superior de Investigaciones Cientificas, 28040 Madrid, Spain
| | - María López-Bravo
- Departamento de Inmunología y Oncología, Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Cientificas, 28049 Madrid, Spain
| | - Jorge Domínguez-Andrés
- Departamento de Inmunología y Oncología, Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Cientificas, 28049 Madrid, Spain
| | - Paula Saz-Leal
- Fundación Centro Nacional de Investigaciones Cardiovasculares, Centro Nacional de Investigaciones Cardiovasculares, 28029 Madrid, Spain; and
| | - David Sancho
- Fundación Centro Nacional de Investigaciones Cardiovasculares, Centro Nacional de Investigaciones Cardiovasculares, 28029 Madrid, Spain; and
| | - Carlos Ardavín
- Departamento de Inmunología y Oncología, Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Cientificas, 28049 Madrid, Spain
| | - Juliana Ochoa-Grullón
- Departamento de Inmunología Clínica, Hospital Universitario Clínico San Carlos, 28040 Madrid, Spain
| | - Silvia Sánchez-Ramón
- Departamento de Inmunología Clínica, Hospital Universitario Clínico San Carlos, 28040 Madrid, Spain
| | - Miguel A Vega
- Departamento de Biología Celular, Centro de Investigaciones Biológicas, Consejo Superior de Investigaciones Cientificas, 28040 Madrid, Spain
| | - Angel L Corbí
- Departamento de Biología Celular, Centro de Investigaciones Biológicas, Consejo Superior de Investigaciones Cientificas, 28040 Madrid, Spain;
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Sánchez-Ramón S, Dhalla F, Chapel H. Challenges in the Role of Gammaglobulin Replacement Therapy and Vaccination Strategies for Hematological Malignancy. Front Immunol 2016; 7:317. [PMID: 27597852 PMCID: PMC4993076 DOI: 10.3389/fimmu.2016.00317] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Accepted: 08/05/2016] [Indexed: 12/13/2022] Open
Abstract
Patients with chronic lymphocytic leukemia (CLL) and multiple myeloma (MM) are prone to present with antibody production deficits associated with recurrent or severe bacterial infections that might benefit from human immunoglobulin (Ig) (IVIg/SCIg) replacement therapy. However, the original IVIg trial data were done before modern therapies were available, and the current indications do not take into account the shift in the immune situation of current treatment combinations and changes in the spectrum of infections. Besides, patients affected by other B cell malignancies present with similar immunodeficiency and manifestations while they are not covered by the current IVIg indications. A potential beneficial strategy could be to vaccinate patients at monoclonal B lymphocytosis and monoclonal gammopathy of undetermined significance stages (for CLL and MM, respectively) or at B-cell malignancy diagnosis, when better antibody responses are attained. We have to re-emphasize the need for assessing and monitoring specific antibody responses; these are warranted to select adequately those patients for whom early intervention with prophylactic anti-infective therapy and/or IVIg is preferred. This review provides an overview of the current scenario, with a focus on prevention of infection in patients with hematological malignancies and the role of Ig replacement therapy.
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Affiliation(s)
- Silvia Sánchez-Ramón
- Department of Clinical Immunology and IdISSC, Hospital Clínico San Carlos, Madrid, Spain; Department of Microbiology I, Complutense University School of Medicine, Madrid, Spain
| | - Fatima Dhalla
- Nuffield Department of Medicine, University of Oxford, Oxford, UK; Department of Clinical Immunology, John Radcliffe Hospital, Headington, Oxford, UK
| | - Helen Chapel
- Nuffield Department of Medicine, University of Oxford, Oxford, UK; Department of Clinical Immunology, John Radcliffe Hospital, Headington, Oxford, UK
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