Title:In silico Identification of HDAC Inhibitors for Multiple Myeloma: A
Structure-based Virtual Screening, Drug Likeness, ADMET Profiling,
Molecular Docking, and Molecular Dynamics Simulation Study
Volume: 21
Issue: 5
Author(s): Abhijit Debnath*, Rupa Mazumder, Avijit Mazumder, Rajesh Singh and Shikha Srivastava
Affiliation:
- Department of Pharmacy Institute, Noida Institute of Engineering and Technology, Greater Noida-201306, Uttar
Pradesh, India
Keywords:
Multiple myeloma, HDAC, HDAC6, HDAC inhibitors, germinal center, IGH translocations, somatic hypermutation.
Abstract:
Background: Multiple myeloma (MM) is a hematological malignancy of plasma cells that
produce a monoclonal immunoglobulin protein. Despite significant advances in the treatment of MM,
currently available therapies are associated with toxicity and resistance. As a result, there is an increasing
demand for novel, effective therapeutics. Inhibition of histone deacetylases (HDACs) is emerging as a
potential method for treating cancer. HDAC6 is one of 18 different HDAC isoforms that regulate tubulin
lysine 40 and function in the microtubule network. HDAC6 participates in tumorigenesis and metastasis
through protein ubiquitination, tubulin, and Hsp90. Several studies have found that inhibiting HDAC6
causes AKT and ERK dephosphorylation, which leads to decreased cell proliferation and promotes cancer
cell death via the PI3K/AKT and MAPK/ERK signaling pathways.
Objective: The objective of this study is to target HDAC6 and identify potent inhibitors for the treatment
of multiple myeloma by employing computer-aided drug design.
Materials and Methods: A total of 199,611,439 molecules from five different chemical databases, such
as CHEMBL25, ChemSpace, Mcule, MolPort, and ZINC, have been screened against HDAC6 by structure-
based virtual screening, followed by filtering for various drug-likeness, ADME, toxicity, consensus
molecular docking, and 100 ns MD simulation.
Results: Our research work resulted in three molecules that have shown strong binding affinity
(CHEMBL2425964 -9.99 kcal/mol, CHEMBL2425966 -9.89 kcal/mol, and CSC067477144 -9.86
kcal/mol) at the active site HDAC6, along with effective ADME properties, low toxicity, and high stability.
Inhibiting HDAC6 with these identified molecules will induce AKT and ERK dephosphorylation
linked to reduced cell proliferation and promote cancer cell death.
Conclusion: CHEMBL2425964, CHEMBL2425966, and CSC067477144 could be effective against multiple
myeloma.