Structural bioinformatics uses computational techniques to aid in drug discovery. Bioinformatics analyzes gene and protein sequence data to identify potential drug targets. Molecular docking then simulates how candidate drug compounds interact with these targets at the atomic level. This provides insight into how well a compound may bind to and affect the target. The results can help optimize drug candidates prior to further testing.
INTRODUCTION
A PERFECT THERAPEUTIC DRUG
DRUG DISCOVERY- HISTORY
MODERN DRUG DISCOVERY
BIOINFORATICS IN DRUG DISCOVERY
DRUG DISCOVERY BASED ON BIOINFORMATIC TOOLS
BIOINFORMATICS IN COMPUTER-AIDED DRUG DISCOVERY
ECONOMICS OF DRUG DISCOVERY
CONCLUSION
REFERENCES
INTRODUCTION
A PERFECT THERAPEUTIC DRUG
DRUG DISCOVERY- HISTORY
MODERN DRUG DISCOVERY
BIOINFORATICS IN DRUG DISCOVERY
DRUG DISCOVERY BASED ON BIOINFORMATIC TOOLS
BIOINFORMATICS IN COMPUTER-AIDED DRUG DISCOVERY
ECONOMICS OF DRUG DISCOVERY
CONCLUSION
REFERENCES
The Role of Bioinformatics in The Drug Discovery ProcessAdebowale Qazeem
The Role of Bioinformatics in The Drug Discovery Process, is an undergraduate seminar presentation in the department of Biochemistry, Faculty of life Sciences, University of Ilorin, Ilorin.
Prediction of the three dimensional structure of a given protein sequence i.e. target protein from the amino acid sequence of a homologous (template) protein for which an X-ray or NMR structure is available based on an alignment to one or more known protein structures
The Role of Bioinformatics in The Drug Discovery ProcessAdebowale Qazeem
The Role of Bioinformatics in The Drug Discovery Process, is an undergraduate seminar presentation in the department of Biochemistry, Faculty of life Sciences, University of Ilorin, Ilorin.
Prediction of the three dimensional structure of a given protein sequence i.e. target protein from the amino acid sequence of a homologous (template) protein for which an X-ray or NMR structure is available based on an alignment to one or more known protein structures
DRUG DESIGN BASED ON BIOINFORMATICS TOOLSNIPER MOHALI
Drug design is a very complex process it takes many more times but using the these specific tools we can reduce complex process and save the time and produce a effective new drug that will be helpful in heath environment.
Presented online as part of the NASM series in Advancing Drug Discovery see https://www.nationalacademies.org/event/40883_09-2023_advancing-drug-discovery-data-science-meets-drug-discovery
In spite of extensive effort by industry and academia to develop new drugs, there are still several diseases that are in need of therapeutic agents and have yet to be developed.
10 years the identification rate of disease-associated targets has been higher than the therapeutics identification rate.
Nevertheless, it is apparent that computational tools provide high hopes that many of the diseases under investigation can be brought under control.
Computer Added Drug Design is one of the latest technology of medicine world. This short slide will help you to know a little about CADD.If you want to know a vast plz go throw the reference book.
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3. Structural bioinformatics
Bioinformatics is the discipline that has
grown up with the task of panning the
streams of sequence data for
pharmaceutical gold dust.
It is an art in which the best results have
been achieved by seasoned experts who
know when and how to deploy
ultrasensitive data-mining tools.
3
5. How is bioinformatics work?
The preceding figure illustrates the different phases in
sequence analysis :
Here sequence data have been collated and analyzed in
advance using Genome Threader
http://www.genomethreader.org/ and other techniques to
create a specialized facility for target discovery.
data collation(collect and combined) many range of
databases provides information on primary gene and
protein sequences, 3-D protein structure, and the results of
basic sequence analysis
5
6. bioinformatics in drug discovery
History of Drug Development :
Plants or natural products are source for
medical substance.
For example: Foxgloves used to treat
heart failure
6
9. Bioinformatics in drug discovery
The Improved Method :
• Drug discovery process begins
with a disease (rather than a treatment)
Use disease model to pinpoint
relevant genetic/biological
components (i.e. possible drug targets)
9
13. Drug discovery-Drug work
How does a drug act anyway?
How does Aspirin relieve headaches?
Why do β-blockers lower blood pressure?
Where does a calcium channel blocker
act?
How does cocaine work?
13
14. Drug discovery-Drug work
An active substance must bind to a very special target
molecule in the body to exert its pharmacological action.
Usually this is a protein, but nucleic acids in the form of
RNA and DNA can also be target structures for active
molecules. An important prerequisite for the binding is
that the active substance has the correct size and shape
to fit into a cavity on the surface of the protein, a binding
pocket, as well as possible. Furthermore, it is also
necessary that the surface properties of ligand and
protein fit together so that the specific interactions can
form. …
14
15. Drug discovery-Target
15
• Target-based drug discovery starts with a
thorough understanding of the disease
mechanisms and the role of enzymes,
receptors or proteins within the disease
pathology.
18. Drug discovery-Receptor
• Receptor is any functional macromolecule
in a cell which a drug binds to produce its
effect.
….So what exactly dose this mean?
18
19. Drug discovery-Receptor
A receptor is like a light switch…
It has two functions : ON and OFF
What is an
In pharmacology, an agonist is a drug
that stimulates a cell receptor that would
normally be stimulated by naturally
occurring substances in a person’s body
19
21. In order to increase the patient’s cardiac
output …We would give the patient
Dobutamine, a drug that directly mirrors
the effects of norepinephrine , a chemical
made by the body.
21
Drug discovery-Receptor
22. • What is an In pharmacology,
an antagonist is a drug that interferes with
the physiological action of another
substance, especially by combining with
and blocking its receptor
22
Drug discovery-Receptor
23. Drug discovery-Receptor
• Example on If a patient arrived
in the Emergency Room with an opioid
overdose of hydrocodone, we would need
to prevent the medication from taking
effect…
23
24. Drug discovery-Receptor
To prevent the Hydrocodone from taking
effect…
We would give him Naloxone to block the
receptors in the body, thereby preventing
the Hydrocodone from binding and
causing an overdose
24
27. Bioinformatics and drug discovery:
By bioinformatics companies can
generate more and more drugs in a short
period of time with low risk.
Drugs are usually only developed when
the particular drug target for those drugs’
actions have been identified and studied.
27
28. Bioinformatics and drug discovery:
Insilico Methods in Drug Discovery
In silico methods can help in identifying drug
targets via bioinformatics tools.
Analyze the target structures for possible
binding/active sites.
Generate candidate molecules, check for their
drug likeness.
Dock these molecules with the target, rank them
according to their binding affinities, further
optimize the molecules to improve binding
characteristics.
28
29. Bioinformatics and drug discovery:
Insilico Methods in Drug Discovery
The use of computers and computational
methods permeates all aspects of drug
discovery today and forms the core of structure-
based drug design.
High-performance computing, data
management software and internet are
facilitating the access of huge amount of data
generated and transforming the massive
complex biological data into workable knowledge
in modern day drug discovery process.
29
30. Bioinformatics and drug discovery:
Insilico Methods in Drug Discovery
The use of complementary experimental
and informatics techniques increases the
chance of success in many stages of the
discovery process, from the identification
of novel targets and elucidation of their
functions to the discovery and
development of lead compounds with
desired properties.
30
31. Bioinformatics and drug discovery:
Insilico Methods in Drug Discovery
Computational tools offer the advantage of
delivering new drug candidates more
quickly and at a lower cost.
31
32. Bioinformatics and drug discovery:
Insilico Methods in Drug Discovery
There are five Insilico methods in drug
discovery.
In my presentation I use this one:-
Starting with an Image to clarify the idea….
32
34. Bioinformatics and drug discovery:
Molecular dockingMolecular docking
Docking is the computational
determination of binding affinity between
molecules (protein structure and ligand).
Given a protein and a ligand find out the
binding free energy of the complex formed
by docking them. Following figure shows
the stages of High throughput docking for
protein –ligand complex binding...
34
35. Bioinformatics and drug discovery:
Molecular dockingMolecular docking
35
Stages of High throughput docking for
protein –ligand complex binding...
36. Bioinformatics and drug discovery:
Molecular dockingMolecular docking
• Docking or Computer aided drug
designing: can be broadly classified as
“Receptor based methods” which make
use of the structure of the target protein
and “Ligand based methods” which is
based on the known inhibitors.
36
37. Molecular docking-Step by StepMolecular docking-Step by Step
What program installation you need to
start docking?
• Discovery Studio 4.1 Client
• AutoDockTools Vina
• AutoDockTools-1.5.6
• Python 3.4
• PyMol Molecular graphic system.
• Cygwin Terminal https://www.cygwin.com/ : a
large collection of GNU and Open Source tools
which provide functionality similar to a
Linux distribution on Windows. 37
38. Molecular docking-Step by StepMolecular docking-Step by Step
Download 1 HSG from RCSB protein database
http://www.rcsb.org/pdb/home/home.do
1HSG saved as 3D structure:
By x-ray we get
38
39. Molecular docking-Step by StepMolecular docking-Step by Step
Open this file from Discovery Studio 4.1
View protein-ligand interaction.
Separate crystalized ligand from protein.
Go to Scripts-Ligand Interaction-Show
ligand Binding SiteAtoms to show lablel
residues.
Scripts-Selection-Select Water Molecules
Edit-Delete.
Scripts-Selection-Select protein chains
39
40. Molecular docking-Step by StepMolecular docking-Step by Step
Edit-delete.
Then save the ligand as ligand.pdb in the
folder for MGL tools.
Then open 1hsg again go to Script –
Selection-Ligand
Edit-delete.
Script-Select-Select Water Molecules
Edit-delete.
Save as 1hsg.pdb at MGLTool folder.
40
41. Molecular docking-Step by StepMolecular docking-Step by Step
Exit Discovery Studio.
Now run MGLTool from autodock but you
must ensure the two files are inside
MGLTool and run autodock from adt batch
file only.
Then open read molecule and read 1hsg
file Edit-Add-hydrogens-only polar.
Grid-macromolecule-choose-1hsg-select
molecule.
41
42. Molecular docking-Step by StepMolecular docking-Step by Step
• Then the molecule will initialized save it as
1hsg.pdbqt
• Grid-gridbox-then set the values as
• No. of points in x-direction=26
• No. of point in y-direction=26
• No. of points in z-direction=26
• Spacing =1.000
• X-center=16.072
• Y-center=26.5007
42
44. Molecular docking-Step by StepMolecular docking-Step by Step
• Z-center= 3.7748
• File close current saving.
• Then hide this molecule and open ligand
• Ligand –input- open and choose your
ligand file.
• Ligand – TorsionTree –Set Number of
Torsions.
• Put No. 6 and press dismiss
• Ligand-Output-Save as .pdbqt
44
45. Molecular docking-Step by StepMolecular docking-Step by Step
• File –Exit
• Go to MGLTool folder and
copy(1hsg.pdbqt & ligand.pdbqt) and
paste them in Vina folder in your
computer.
• In vina folder create text document name it
as conf. and write in it :
45
receptor=1hsg.pdbqt
ligand=ligand.pdbqt
out=out.pdbqt
center_x=16.072
center_y=26.5007
center_z=3.7748
size_x=26
size_y=26
size_z=26
exhaustiveness=8
46. Molecular docking-Step by StepMolecular docking-Step by Step
• Save and close conf.
• Run cmd prompt .
• Change the directory to vina folder in my
computer C:Program FilesThe Scripps
Research Institutevina
• Write on this folder
• Vina --config conf.txt--log log.txt
• After the execution
• Write vina-split- -input out.pdbqt
46
47. Molecular docking-Step by StepMolecular docking-Step by Step
• Open vina folder and see the nine
out_ligand file.
• You can check each of them.
• Now open Pymol and open 1hsg that you
download from RCSB and ligand that
produced to check the best docking
parameters.
47
50. References:-
Role of bioinformatics and
pharmacogenomics in drug discovery and
development process – Springer
projectPersonalized Medicine - NIH News
in Health, December 2013.html
Target discovery using bioinformatics.html
Identifying targets for drug discovery using
bioinformatics. - PubMed - NCBI.html
Drug and target protein structures in the
PDB.html
50
51. References:-
• AutoDock4.2.6_UserGuide.pdf
• How to prepare the environment to run
Autodock in Windows Operating
System.pdf
• Turning Docking and Virtual Screening as
simple as it can get....html
• drug discovery.pdf
• drug dock.pdf
51