Abstract
Nitric oxide (NO) has been proven to be a key regulator in the mammalian immune response, such as the innate and adaptive immune responses to tumors. The messenger NO involves T helper cell differentiation and lymphocyte biofunctions. In this study, we employed N,N’-di-sec-butyl-N,N’-dinitroso-1,4-phenylenediamine as NO donor and released NO around tumor infiltrating lymphocytes in vitro by short-time blue light irradiation. The interferon-γ secretion of tumor infiltrating lymphocytes was investigated to study the functional changes caused by the accurate spatio-temporal delivery of NO. The downregulation of interferon-γ in tumor infiltrating lymphocytes after NO treatment indicates promising biological applications to potentially play a role in the treatment of autoimmune diseases. The study was approved by the Medical Ethics Committee of the Shenzhen Second People’s Hospital, the First Affiliated Hospital of Shenzhen University, China (approved No. 065) on February 12, 2018.
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