PMID- 37139547 OWN - NLM STAT- MEDLINE DCOM- 20240311 LR - 20240328 IS - 1538-0254 (Electronic) IS - 0739-1102 (Linking) VI - 42 IP - 5 DP - 2024 Mar TI - In-silico identification of novel DDI2 inhibitor in glioblastoma via repurposing FDA approved drugs using molecular docking and MD simulation study. PG - 2270-2281 LID - 10.1080/07391102.2023.2204371 [doi] AB - Glioblastoma, the most severe form of brain tumor and a leading cause of death within a year of diagnosis, is characterized by excessive protein synthesis and folding in the lumen of the endoplasmic reticulum (ER), leading to increased ER stress in the cells of GBM tissues. To mitigate this stress the cancer cells have intelligently adopted a plethora of response mechanisms and Unfolded Protein Response (UPR) is one of those. To bear with this exhaustive situation cells upregulate a strong protein degradation system in form of 26S proteasome and blocking of proteasomal gene synthesis may be a potential therapeutic action against GBM. Proteasomal gene synthesis is exclusively dependent on the transcription factor Nuclear respiratory factor 1 (NRF1) and its activating enzyme DNA damage inducible 1 homolog 2 (DDI2). Here in this study, we performed molecular docking against DDI2 with the 20 FDA-approved drugs and identified Alvimopan and Levocabastine as the top two compounds with the best binding score along with the standard drug Nelfinavir. MD simulation (100 ns) of these protein-ligand docked complexes reveals that the stability and compactness of Alvimopan are high in comparison with Nelfinavir. Our in-silico (Molecular docking and Molecular dynamics simulation) studies pointed out that Alvimopan may be repurposed as a DDI2 inhibitor and can be used as a potential anticancer agent for the treatment of brain tumors.Communicated by Ramaswamy H. Sarma. FAU - Roy, Pritam Kumar AU - Roy PK AD - School of Medical Science and Technology, Indian Institute of Technology, Kharagpur, West Bengal, India. FAU - Majumder, Ranabir AU - Majumder R AUID- ORCID: 0000-0003-3585-3276 AD - School of Medical Science and Technology, Indian Institute of Technology, Kharagpur, West Bengal, India. FAU - Mandal, Mahitosh AU - Mandal M AD - School of Medical Science and Technology, Indian Institute of Technology, Kharagpur, West Bengal, India. LA - eng PT - Journal Article DEP - 20230503 PL - England TA - J Biomol Struct Dyn JT - Journal of biomolecular structure & dynamics JID - 8404176 RN - 0 (Antineoplastic Agents) RN - HO3OGH5D7I (Nelfinavir) RN - EC 3.4.- (DDI2 protein, human) RN - EC 3.4.- (Aspartic Acid Proteases) SB - IM MH - Humans MH - *Antineoplastic Agents/pharmacology/therapeutic use MH - Drug Repositioning MH - *Glioblastoma/drug therapy MH - Molecular Docking Simulation MH - Molecular Dynamics Simulation MH - Nelfinavir/pharmacology MH - *Aspartic Acid Proteases/antagonists & inhibitors OTO - NOTNLM OT - Aspartyl protease OT - DDI2 OT - NRF1 OT - glioblastoma (GBM) OT - molecular docking and MD simulation OT - proteasome EDAT- 2023/05/04 06:42 MHDA- 2024/03/11 06:43 CRDT- 2023/05/04 02:22 PHST- 2024/03/11 06:43 [medline] PHST- 2023/05/04 06:42 [pubmed] PHST- 2023/05/04 02:22 [entrez] AID - 10.1080/07391102.2023.2204371 [doi] PST - ppublish SO - J Biomol Struct Dyn. 2024 Mar;42(5):2270-2281. doi: 10.1080/07391102.2023.2204371. Epub 2023 May 3.