Volume 7 • Issue 1 • 1000149
J Nanomedine Biotherapeutic Discov, an open access journal
ISSN: 2155-983X
Research Article Open Access
Journal of Nanomedicine &
Biotherapeutic Discovery
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ISSN: 2155-983X
Kumar et al., J Nanomedine Biotherapeutic Discov 2017, 7:1
DOI: 10.4172/2155-983X.1000149
Keywords: iGemdock; Insulin; Gemini surfactants; Aggregation
Introduction
Insulin is a very popular protein and it is known as metabolic
hormone. It has been synthesized and secreted from beta cells of
pancreas of human being. Insulin plays an important role in opening
of the cell in the body and permits the glucose to be used as an energy
source. With increases in the glucose levels in the plasma of the blood,
an increase in the uptake and metabolism by the pancreas beta cells
has been observed and it leads the insulin secretion. Many diabetic
patients are advised to take insulin so they can the level of sugar and
can avoid complications caused [1-8]. Insulin is stored as granules
and it consists of six units. They are loosely connected by various
forces e.g. hydrophobic interaction. Different modifications in the
structure of insulin have been made to affect insulin [9-21]. Insulin
has the tendency to undergo for the structural transformation and
results in aggregation and formation of insoluble insulin fibrils. It
has been the most motivating and thoroughly studied problem. The
absolute mechanism of the formation of the fibril is still unclear.
Therefore, most popular methods for the stabilization of the insulin
against fibrillation contribute to counteract associated insulin from
being disassembled [2,9-13,22]. It is evident that the stabilization
mechanism is consistent with the destabilising role attributed to
hydrophobic surfaces [14-26].
In view of this, surfactants have interesting properties like their
interfacial and bulkiness and used to stabilize various biomolecules.
Conventional surfactant has a single hydrophobic tail connected
to an ionic or polar head group, whereas a Gemini surfactant has
in sequence a long hydrocarbon chain, an ionic group, a spacer, a
second ionic group and another hydrocarbon tail. Gemini surfactants
are considerably more surface-active than conventional surfactants.
Terefore, insulin can be stabilized by using diferent types of Gemini
surfactant. In the present work, authors hypothesized that addition
of Gemini surfactants to insulin can suppressed the self-aggregation
tendency by decreasing the hydrophobic interactions. In this study,
authors studied the efects of Gemini surfactants on structural stability
of the insulin using computational tools.
Experimental Methodology
Molecular interactions are useful for identifying lead compounds
and understanding ligand binding mechanisms for a therapeutic target.
Tese interactions are ofen inferred from a set of active compounds
that were acquired experimentally. Docking program is most likely
coupled the stages of structure based docking/screening and post-
analyzing modules contain several components to make the screening/
analyzing procedure. Te iGEMDOCK is computational tools useful
generates for protein compound interaction profles of electrostatic
(E), hydrogen bonding (H), and Van der Waals interaction. It can
sequentially be applied to four computational phases and it includes
target and database preparation, molecular docking and post-docking
analysis. If protein-ligand interactions have low energy (negative
energy) indicates a stable system and thus a likely binding interaction
[27-32].
Docking
It is a powerful approach for structure based drug design and
structural hypotheses, how the ligands interact with the target? Te
ligand-protein docking is to predict the predominant binding modes
of a ligand with a protein of known three-dimensional structure.
Ligand preparation
Gemini Surfactants (GS) were drawn using ChemDraw Ultra 12.0
and a library of 100 GS has been made as in Table 1 based on Figure
1. Tese iGEMDOCK do not accept 2D structures and takes only
in MDL MOL, SYBYL MOL2 and PDB format. It is recommended
Impact of Gemini Surfactants on the Stability of Insulin using
Computational Tools
Durgesh Kumar
1
, Prashant Singh
1
*, Ramesh Chandra
2
, Kamlesh Kumari
3
and Mukesh Kumar
4
, Mahendra Kumar Meena
5
1
Department of Chemistry, ARSD College, Delhi University, Delhi, India
2
Department of Chemistry, Delhi University, Delhi, India
3
Department of Zoology, DDU College, Delhi, India
4
Department of Chemistry, Sri Aurobindo College, Delhi University, Delhi, India
5
Department of Chemistry, Shivaji College, Delhi University, Delhi, India
Abstract
Herein, a theoretical model has been designed to study the aggregation behaviour of native bovine insulin using
computational tools. Herein, self-association and aggregation of insulin in the presence of Gemini surfactant was
investigated. The data showed the noteworthy interaction and stabilization of insulin due to the Gemini surfactants.
Using Gemini surfactants having spacer of two carbons i.e., ethylene group, it was found that Gemini surfactant, 71
found to be best for the stabilization of insulin. This conclusion is based on the energy contributed due to hydrogen
bonding, electrostatic interaction and Van der Waals interactions. Further, Gemini surfactant, 71 has been proven a
better stabilizer when the results were compared with the reported ligands as in PDB fles (1ZNI, 2HR7 and 2OLY).
Further, its comparison was done with conventional surfactants. It was found that Gemini surfactant, 71 is more
potent than the conventional surfactants.
*Corresponding author: Prashant Singh, Department of Chemistry, ARSD College,
Delhi University, Delhi, India, Tel: +911124113436; E-mail: psingh@arsd.du.ac.in
Received June 02, 2017; Accepted June 28, 2017; Published July 03, 2017
Citation: Kumar D, Singh P, Chandra R, Kumari K, Kumar M, et al. (2017) Impact of
Gemini Surfactants on the Stability of Insulin using Computational Tools. J Nanomedine
Biotherapeutic Discov 7: 149. doi: 10.4172/2155-983X.1000149
Copyright: © 2017 Kumar D, et al. This is an open-access article distributed under
the terms of the Creative Commons Attribution License, which permits unrestricted
use, distribution, and reproduction in any medium, provided the original author and
source are credited.