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Chemoinformatic Study and In vitro Bioevaluation of Tc-99m-Labeled N-Acetyl Neuraminic Acid in C6 Glioma Cells: Potential Role as a Radionuclide Imaging Probe

BACKGROUND: To date, the use of sialic acid that are reported to be elevated during malignancy has been largely unexplored for tumor imaging. The purpose of the present study was to study the modeled stable conformers of n-acetyl neuraminic acid (Neu5Ac) and its radiolabeled conjugate (Tc-99m-Neu5Ac...

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Detalles Bibliográficos
Autores principales: Kumar, Ravi Ranjan, Jaswal, Radhika Rani, Saini, Avneet, Dhawan, Devinder Kumar, Chadha, Vijayta Dani
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Medknow Publications & Media Pvt Ltd 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8481855/
https://www.ncbi.nlm.nih.gov/pubmed/34658550
http://dx.doi.org/10.4103/ijnm.ijnm_5_21
Descripción
Sumario:BACKGROUND: To date, the use of sialic acid that are reported to be elevated during malignancy has been largely unexplored for tumor imaging. The purpose of the present study was to study the modeled stable conformers of n-acetyl neuraminic acid (Neu5Ac) and its radiolabeled conjugate (Tc-99m-Neu5Ac) through computational chemistry approach and its in-vitro bioevaluation in rat C6 cell lines. MATERIALS AND METHODS: The Neu5Ac was radiolabeled with Tc-99m using stannous reduction method and the radiochemical purity of Tc-99m-Neu5Ac was determined by instant thin layer chromatography. A Cheminformatic study of Tc-99m-Neu5Ac was performed by using Marvin application of ChemAxon. Glioma cancer cells were taken to evaluate the cytotoxicity and binding efficacy of Tc-99m-Neu5Ac. RESULTS: Cheminformatic studies exhibited that the most stable conformer of Tc-99m-Neu5Ac is 15 kcal/mol more stable energetically over least stable conformer. The radiochemical yield of Tc-99m labeled Neu5Ac was observed to be greater than 90%. Further, the radiolabeled complex (Tc-99m-Neu5Ac)exhibited specificity for C6 glioma with time and concentration dependent cytotoxicity. CONCLUSION: In conclusion, Tc-99m-Neu5Ac has the potential to be exploited as an in-vivo radionuclide probe for tumor imaging.