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Immune reactivity after adenoviral‐mediated aquaporin‐1 cDNA transfer to human parotid glands
Author(s) -
Alevizos I,
Zheng C,
Cotrim AP,
Goldsmith CM,
McCullagh L,
Berkowitz T,
Strobl SL,
Malyguine A,
Kopp WC,
Chiorini JA,
Nikolov NP,
Neely M,
Illei GG,
Baum BJ
Publication year - 2017
Publication title -
oral diseases
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.953
H-Index - 87
eISSN - 1601-0825
pISSN - 1354-523X
DOI - 10.1111/odi.12614
Subject(s) - immune system , peripheral blood mononuclear cell , immunology , antibody , lymphocyte , cytokine , cytotoxic t cell , neutralizing antibody , parotid gland , medicine , biology , in vitro , pathology , biochemistry
Objectives The purpose of this study was to examine the humoral and cellular immune reactivity to adenoviral vector (Adh AQP 1) administration in the human parotid gland over the first 42 days of a clinical gene therapy trial. Methods Of eleven treated subjects, five were considered as positive responders (Baum et al , 2012). Herein, we measured serum neutralizing antibody titers, circulating cytotoxic lymphocytes, and lymphocyte proliferation in peripheral blood mononuclear cells. Additionally, after adenoviral vector stimulation of lymphocyte proliferation, we quantified secreted cytokine levels. Results Responders showed little to modest immune reactivity during the first 42 days following gene transfer. Additionally, baseline serum neutralizing antibody titers to serotype 5‐adenovirus generally were not predictive of a subject's response to parotid gland administration of Adh AQP 1. Cytokine profiling from activated peripheral blood mononuclear cells could not distinguish responders and non‐responders. Conclusions The data are the first to describe immune responses after adenoviral vector administration in a human parotid gland. Importantly, we found that modest (2–3 fold) changes in systemic cell‐mediated immune reactivity did not preclude positive subject responses to gene transfer. However, changes beyond that level likely impeded the efficacy of gene transfer.