Preparation of neopterin imprinted nanofilm coated surface plasmon resonance sensors for detection of neopterin from human serum

Neopterin (Neo) is produced by induction of macrophages by T-lymphocytes that activate interferon-gamma (IFN-ϒ) from guanosine triphosphate (GTP). Neo is synthesized only in activated macrophages of humans and primates, and from there it passes to plasma. Neopterin is present in serum and urine at pronounced constant rates. For this reason, it can be a useful marker for monitoring infectious disease activity during treatment and for estimating the extent of the disease and prognosis. Our aim in this study is to selectively detect Neo from body fluids by synthesizing Neopterin-imprinted nanofilms on the gold SPR chip surface. First, after cleaning the gold-coated chip surface with piranha solution, the surface will be modified by dropping allyl mercaptan. Then, using HEMA-EGDMA and AIBN, a molecularly imprinted polymer solution will be prepared and the SPR will be poured onto the chip surface to obtain a nanofilm surface under appropriate conditions. In addition, initial Neo concentration, interaction time and selectivity for chip surfaces will be investigated. SPR studies will be carried out using gold chips with a Neopterin imprinted nanofilm surface. For this, Neopterin imprinted SPR chips will be prepared and then the selective recognition of Neo will be tested using the SPR sensor. Keywords: Nanofilm, Molecular Imprinted Nanofilms, Neopterin.