Design and evaluation of scFv-RTX-A as a novel immunotoxin for breast cancer treatment: an in silico approach.

Design and evaluation of scFv-RTX-A as a novel immunotoxin for breast cancer treatment: an in silico approach. J Immunoassay Immunochem. 2020 Aug 26;:1-15 Authors: Samavarchi Tehrani S, Gharibi S, Movahedpour A, Goodarzi G, Jamali Z, Khatami SH, Maniati M, Ranjbar M, Shabaninejad Z, Savardashtaki A, Taheri-Anganeh M Abstract Human epidermal growth factor receptor 2 (HER2) is overexpressed in breast cancer (BC) patients. Hence, immunotherapy is a proper treatment option for HER2-positive BC patients. Accumulating evidence has indicated that immunotoxin therapy is a novel approach to improve the potency of targeted therapy. Immunotoxins are antibodies or antibody fragments coupled with a toxin. We designed an immunotoxin. The physicochemical properties were evaluated using ProtParam servers and secondary structure was examined by PROSO II and GORV. Using I-TASSER, a 3D model was built and refined by GalaxyRefine. The model was validated using PROCHECK and RAMPAGE. To predict immunotoxin allergenicity and mRNA stability, AlgPred server and RNAfold were used. Furthermore, the immunotoxin and HER2 were docked by ZDOCK. The scFv+RTX-A could be a non-allergenic and stable chimeric protein, and the secondary structure of its components did not alter, and this protein had a proper 3D structure that might have stable mRNA structure which could bind to HER2. Given the fact that the designed immunotoxin was a non-allergenic and stable chim...
Source: Journal of Immunoassay and Immunochemistry - Category: Biochemistry Tags: J Immunoassay Immunochem Source Type: research