Name
Aafaq Ali,Asad
Noman
Class
M.Phil 1st Sem
Topic
Human Genome Project
Presented To
Sir Umair Malick
Department Of Botany
University Of Lahore(Sargodha Campus)
The Human Genome Project
Introduction
Until the early 1970’s, DNA was the most difficult
cellular molecule for biochemists to analyze.
DNA is now the easiest molecule to analyze – we can
now isolate a specific region of the genome, produce
a virtually unlimited number of copies of it, and
determine its nucleotide sequence overnight.
What is a genome?
A genome is an organism’s complete set
of DNA, including all of its genes. Each
genome contains all of the information
needed to build and maintain that
organism. In humans, a copy of the entire
genome—more than 3 billion DNA base
pairs—is contained in all cells that have a
nucleus.
History Of Human Genome
project
In 1984-86
DOE(Department of Energy) was interested in
genetic research regarding health effects from
radiation and chemical exposure.
NIH(National Institutes of Health) was interested
in gene sequencing / mutations and their
biomedical implications of genetic variation.
Human Genome Project,
1988
Reports from NRC(NuclearRegulatory
Commission)Committee on Complex Genomes.
All reports supported the development of the
Human Genome Project, with parallel projects
for other model organisms
Congress agreed to appropriate funds to
support research to determine
History of Human Genome Project,
1983 Los Alamos Labs and Lawrence Livermore National Labs,
both under the DOE(Department Of Energy), begin production
of DNA cosmid libraries for single chromosomes
1986 DOE announces HUMAN GENOME PROJECT
1987 DOE advisory committee recommends a 15-year multi-
disciplinary undertaking to map and sequence the human
genome. NIH(National Institutes of Health) begins funding of
genome projects
1988 Recognition of need for concerted effort. HUGO founded
(Human Genome Organization) to coordinate international
efforts DOE and NIH sign the Memorandum of Understanding
outlining plans for co-operation
1990 DOE and NIH present joint 5-year Human
Genome Project to Congress. The 15 year project
formally begins
1991 Genome Database (GDB) established
1992 Low resolution genetic linkage map of entire
human genome published, High resolution map of Y and
chromosome 21 published
1993 DOE and NIH revise 5-year goals
IMAGE consortium established to co-ordinate efficient mapping and
sequencing of gene-representing cDNAs (Integrated Molecular Analysis of
Genomes and their Expression)
1994 Genetic-mapping 5-year goal achieved 1 year
ahead of schedule
Genetic Privacy Act proposed to regulate collection, analysis, storage and use of
DNA samples (endorsed by ELSI)
1994-98 Tons of stuff happens that continues to
advance the project
1998 Celera* Genomics formed
New 5-year plan by DOE and NIH
1999 First chromosome completely sequenced
(Chromosome 22)
2000 June 6, HGP and Celera announce they had
completed ~ 97% of the human genome.
2003 April 25, HGP finally completed
*Celera is a subsidiary of which focuses on genetic sequencing and related
technologies
•James Watson
•Original Head of HGP
Francis Collins
Director of NIH
Craig Venter
Sequence Human Genome
People of Human Genome Project
Brief History Of Human Genome
project
1984 to 1986 – first proposed at US DOE meetings
1988 – endorsed by US National Research Council
(Funded by NIH and US DOE $3 billion set aside)
1990 – Human Genome Project started (NHGRI)
Later – UK, US,France, Japan, Germany, China
1998. Celera announces a 3-year plan to complete the
project years early
First draft published in Science and Nature in February,
2001
Finished Human Genome sequence published in Nature
2003.
The Human Genome Project
- Timelines -
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
1st Human
Chromosome
Sequenced
Congress
Recommends
15 year HGP
Project
HGP
Officially
Begins
Low
Resolution
Linkage
Map of HG
Published
High Resolution
Maps of
Specific
Chromosomes
Announced
E.coli
Genome
Completed
Celera
Genomics
Formed
Conference
on HGP
Feasibility
S. cerevisiae
Genome
Completed
C. elegans
Genome
Completed
Fly
Genome
Completed
Human
Genome
Published
President announces
genome working
draft completed
Science (Feb. 16, 2001) - Celera
Nature (Feb. 15, 2001) - HGP
Human Genome Project
Goals
Identify all the approximate 30,000 genes in human DNA,
Determine the sequences of the 3 billion chemical base pairs that make up human
DNA
Store this information in databases,
Improve tools for data analysis,
Transfer related technologies to the private sector, and
Address the ethical, legal, and social issues (ELSI) that may arise from the project.
The first reference genome is a composite
genome from several different people.
Generated from 10-20 primary samples taken
from numerous anonymous() donors across racial()
and ethnic() groups.
What does the draft human genome
sequence tell us?
By the Numbers
The human genome contains 3 billion chemical nucleotide bases (A, C, T,
and G).
The average gene consists of 3000 bases, but sizes vary greatly, with the
largest known human gene being dystrophin at 2.4 million bases.
The total number of genes is estimated at around 30,000--much lower
than previous estimates of 80,000 to 140,000.
Almost all (99.9%) nucleotide bases are exactly the same in all people.
The functions are unknown for over 50% of discovered genes.
Chromosome no. 1 has the most genes (2968), and the Y chromosome
has the fewest (231).
How It's Arranged
The human genome's gene-dense "urban centers" are
predominantly composed of the DNA building blocks G and C.
In contrast, the gene-poor "deserts" are rich in the DNA building
blocks A and T. GC- and AT-rich regions usually can be seen
through a microscope as light and dark bands on chromosomes.
Genes appear to be concentrated in random areas along the
genome, with vast expanses of noncoding DNA between.
Less than 2% of the genome codes for proteins.
Repeated sequences that do not code for proteins ("junk DNA")
make up at least 50% of the human genome.
Repetitive sequences are thought to have no direct functions, but
they shed light on chromosome structure and dynamics. Over time,
these repeats reshape the genome by rearranging it, creating entirely
new genes, and modifying and reshuffling existing genes.
The human genome has a much greater portion (50%) of repeat
sequences than the mustard weed (11%)the worm (7%)and the fly
(3%).
How the Human Compares with Other
Organisms• Unlike the human's seemingly random distribution of gene-rich
areas, many other organisms' genomes are more uniform, with genes evenly spaced
throughout.
Humans have on average three times as many kinds of proteins as the fly or worm
because of mRNA transcript "alternative splicing" and chemical modifications to the
proteins. This process can yield different protein products from the same gene.
Humans share most of the same protein families with worms, flies, and plants; but
the number of gene family members has expanded in humans, especially in proteins
involved in development and immunity.
Although humans appear to have stopped accumulating repeated DNA over 50
million years ago, there seems to be no such decline in rodents. This may account for
some of the fundamental differences between hominids and rodents(), although gene
estimates are similar in these species. Scientists have proposed many theories to explain
evolutionary contrasts between humans and other organisms, including those of life
span, litter sizes, inbreeding, and genetic drift.
Variations and Mutations
Scientists have identified about 3 million locations where single-base
DNA differences (SNPs) occur in humans. This information promises to
revolutionize the processes of finding chromosomal locations for
disease-associated sequences and tracing human history.
The ratio of germline (sperm or egg cell) mutations is 2:1 in males vs
females. Researchers point to several reasons for the higher mutation
rate in the male germline, including the greater number of cell divisions
required for sperm formation than for eggs.
How does the human genome
stack up?
Organism Genome Size (Bases)Estimated Genes
Human (Homo sapiens) 3 billion 30,000
Laboratory mouse (M. musculus) 2.6 billion 30,000
Mustard weed (A. thaliana) 100 million 25,000
Roundworm (C. elegans) 97 million 19,000
Fruit fly (D. melanogaster) 137 million 13,000
Yeast (S. cerevisiae) 12.1 million 6,000
Bacterium (E. coli) 4.6 million 3,200
Human immunodeficiency virus (HIV) 9700 9
Medicine
Bioinformatics
Biotechnology
DNA chip
technology
Gene therapy
applications
Diagnostic &
therapeutic
applications
Medicine &
pharmaceutical industries
Agriculture &
Bioremediation
Industries
Microarray
Technology
Proteomics
Pharmacogenomics
Preventative
measures
Developmental
Biology
Evolutionary &
Comparative
Biologists
Benefits of Human Genome
Project
Gene number, exact locations, and functions
Gene regulation
DNA sequence organization
Chromosomal structure and organization
Noncoding DNA types, amount, distribution, information content, and functions
Coordination of gene expression, protein synthesis, and post-translational events
Interaction of proteins in complex molecular machines
Predicted vs experimentally determined gene function
Evolutionary conservation among organisms
Protein conservation (structure and function)
Proteomes (total protein content and function) in organisms
Correlation of SNPs (single-base DNA variations among individuals) with health and
disease
Disease-susceptibility prediction based on gene sequence variation
Genes involved in complex traits and multigene diseases
Complex systems biology including microbial consortia useful for environmental
restoration
Developmental genetics, genomics
Future Challenges:
What We Still Don’t Know
Anticipated() Benefits of Genome
Research
Molecular Medicine
Improve diagnosis of disease
Create drugs based on molecular information
Use gene therapy and control systems as drugs
Design “custom drugs” (pharmacogenomics) based on individual genetic profiles
Microbial Genomics
Rapidly detect and treat pathogens (disease-causing microbes) in clinical practice
Develop new energy sources (biofuels)
Donitor environments to detect pollutants
Protect citizenry from biological and chemical warfare
Clean up toxic waste safely and efficiently
Risk Assessment
Evaluate the health risks faced by individuals who may be exposed to radiation
(including low levels in industrial areas) and to cancer-causing chemicals and
toxins
Bioarchaeology, Anthropology, Evolution,
and Human Migration
Study evolution through germline mutations in lineages
Study migration of different population groups based on maternal inheritance
Study mutations on the Y chromosome to trace lineage and migration of males
Compare breakpoints in the evolution of mutations with ages of populations and
historical events
DNA Identification (Forensics)
Identify potential suspects whose DNA may match evidence left at crime scenes
Exonerate persons wrongly accused of crimes
Identify crime and catastrophe victims
Establish paternity and other family relationships
Identify endangered and protected species as an aid to wildlife officials (could
be used for prosecuting poachers)
Detect bacteria and other organisms that may pollute air, water, soil, and food
Match organ donors with recipients in transplant programs
Determine pedigree for seed or livestock breeds
Authenticate consumables such as caviar and wine
Agriculture, Livestock Breeding, and
Bioprocessing
Grow disease-, insect-, and drought-resistant crops
Breed healthier, more productive, disease-resistant farm
animals
Grow more nutritious produce
Develop biopesticides
Incorporate edible vaccines incorporated into food products
Develop new environmental cleanup uses for plants like
tobacco
ELSI: Ethical, Legal,
and Social Issues
Privacy and confidentiality of genetic information.
Fairness in the use of genetic information by insurers, employers, courts, schools,
adoption agencies, and the military, among others.
Psychological impact, stigmatization, and discrimination due to an individual’s
genetic differences.
Reproductive issues including adequate and informed consent and use of genetic
information in reproductive decision making.
Clinical issues including the education of doctors and other health-service providers,
people identified with genetic conditions, and the general public about capabilities,
limitations, and social risks; and implementation of standards and quality control
‑
measures.
Uncertainties associated with gene tests for susceptibilities and complex
conditions (e.g., heart disease, diabetes, and Alzheimer’s disease).
Fairness in access to advanced genomic technologies.
Conceptual and philosophical implications regarding human responsibility, free will
vs genetic determinism, and concepts of health and disease.
Health and environmental issues concerning genetically modified (GM) foods and
microbes.
Commercialization of products including property rights (patents, copyrights, and
trade secrets) and accessibility of data and materials.
Beyond the HGP: What’s
Next?
HapMap Systems Biology
Exploring Microbial Genomes for
Energy and the Environment
Chart genetic variation
within the human genome
Genomes to Life:
A DOE Systems
Biology Program
Exploring Microbial Genomes for Energy and the
Environment
Goals
Identify the protein machines that carry out critical life functions
characterize the gene regulatory networks that control these machines
characterize the functional repertoire of complex microbial communities in their
natural environments
develop the computational capabilities to integrate and understand these data and
begin to model complex biological systems
HapMap
An NIH program to chart genetic variation
within the human genome
Begun in 2002, the project is a 3-year effort to
construct a map of the patterns of SNPs (single
nucleotide polymorphisms) that occur across
populations in Africa, Asia, and the United States.
Consortium of researchers from six countries
Researchers hope that dramatically decreasing the
number of individual SNPs to be scanned will
provide a shortcut for identifying the DNA regions
associated with common complex diseases
Map may also be useful in understanding how
genetic variation contributes to responses in
environmental factors
Map of Chromosome 16
Costs of Human Genomic Sequencing
Clone by clone
$0.30 per finished base
$130 million per year for 7 years
Total $900 million spent by end of 2003
Shotgun
$0.01 per raw base
$130 million for 3 years would provide
10× coverage/redundancy plus an additional $90
million for informatics
Human Genome Projects Progress
Human Chromosome
Map
Contains over
3000 genes
Contains over
240 million
base pairs, of
which ~90%
have been
determined
Chromosome #1
Contains over
2500 genes
Contains over
240 million
base pairs, of
which ~95%
have been
determined
Chromosome #2
Contains
approximatel
y 1900 genes
Contains
approximatel
y 200 million
base pairs, of
which ~95%
have been
determined
Chromosome# 3
Contains
approximatel
y 1600 genes
Contains
approximatel
y 190 million
base pairs, of
which ~95%
have been
determined
Chromosome #4
Contains
approximatel
y 1700 genes
Contains
approximatel
y 180 million
base pairs, of
which over
95% have
been
determined
Chromosome #5
Contains
approximatel
y 1900 genes
Contains
approximatel
y 170 million
base pairs, of
which over
95% have
been
determined
Chromosome #6
Contains
approximatel
y 1800 genes
Contains over
150 million
base pairs, of
which over
95% have
been
determined
Chromosome# 7
Contains over
1400 genes
Contains over
140 million
base pairs, of
which over
95% have
been
determined
Chromosome #8
Contains over
1400 genes
Contains over
130 million
base pairs, of
which over
85% have
been
determined
Chromosome# 9
Contains over
1400 genes
Contains over
130 million
base pairs, of
which over
95% have
been
determined
Chromosome# 10
Contains
approximatel
y 2000 genes
Contains over
130 million
base pairs, of
which over
95% have
been
determined
Chromosome# 11
Contains over
1600 genes
Contains over
130 million
base pairs, of
which over
95% have
been
determined
Chromosome# 12
Contains
approximatel
y 800 genes
Contains over
110 million
base pairs, of
which over
80% have
been
determined
Chromosome# 13
Contains
approximatel
y 1200 genes
Contains over
100 million
base pairs, of
which over
80% have
been
determined
Chromosome #14
Contains
approximatel
y 1200 genes
Contains
approximatel
y 100 million
base pairs, of
which over
80% have
been
determined
Chromosome# 15
Contains
approximatel
y 1300 genes
Contains
approximatel
y 90 million
base pairs, of
which over
85% have
been
determined
Chromosome #16
Contains over
1600 genes
Contains
approximatel
y 80 million
base pairs, of
which over
95% have
been
determined
Chromosome# 17
Contains over
600 genes
Contains over
70 million
base pairs, of
which over
95% have
been
determined
Chromosome #18
Contains
over 1700
genes
Contains
over 60
million base
pairs, of
which over
85% have
been
determined
Chromosome# 19
Contains over
900 genes
Contains over
60 million
base pairs, of
which over
90% have
been
determined
Chromosome #20
Contains over
400 genes
Contains over
40 million
base pairs, of
which over
70% have
been
determined
Chromosome# 21
Contains over
800 genes
Contains over
40 million
base pairs, of
which
approximately
70% have
been
determined
Chromosome# 22
•Contains over
1400 genes
•Contains over
150 million
base pairs, of
which
approximately
95% have
been
determined
X Chromosome
Contains over
200 genes
Contains over
50 million
base pairs, of
which
approximatel
y 50% have
been
determined
Y Chromosome
http://www.ncbi.nlm.nih.gov/books/NBK22
266/#A273
National Center for Biotechnology
Information (US)
Refrences
http://www.bioperl.org/GetStarted/tpj_ls_bio.html
Lincoln Stein’s classic article on “How Perl Saved The
Human Genome Project”
http://www.eecs.berkeley.edu/~gene/Papers/greedy.pat
h.merging.pdf
Celera Assembler Algorithm
http://doegenomes.org
http://www-
management.wharton.upenn.edu/pennings/coursedocuments/e
xecutive_education_courses/557/genome%20Paper%201.doc
http://www.ornl.gov/sci/techresources/Human_Genome
/education/images.shtml