Recombinant DNA technology involves intentionally modifying organisms' genomes for practical purposes such as eliminating undesirable traits, combining beneficial traits from different organisms, or creating organisms that synthesize useful products. The key steps involve isolating a gene of interest, inserting it into a plasmid, introducing the plasmid into bacteria, and harvesting copies of the gene or its protein products. Common tools used include mutagens, reverse transcriptase to synthesize cDNA, synthetic nucleic acids, restriction enzymes to cut DNA at specific sites, vectors to deliver genes into cells, and gene libraries containing collections of cloned genes.
Objectives:
After the end of the presentation we’ll know -
What is cloning vector?
Why cloning vector?
History
Features of a cloning vector
Types of cloning vector
Plasmid
Bacteriophage
Cosmid
Bacterial Artificial Chromosome (BAC)
Yeast Artificial Chromosome (BAC)
Human Artificial Chromosome (HAC)
Retroviral Vectors
What determines choice of vector?
Vector in molecular gene cloning
Cloning vector - The molecular analysis of DNA has been made possible by the cloning of DNA. The two molecules that are required for cloning are the DNA to be cloned and a cloning vector.
A cloning vector is a small piece of DNA taken from a virus, a plasmid or the cell of a higher organism, that can be stably maintained in an organism and into which a foreign DNA fragment can be inserted for cloning purposes.
Most vectors are genetically engineered.
The cloning vector is chosen according to the size and type of DNA to be cloned.
The vector therefore contains features that allow for the convenient insertion or removal of DNA fragment in or out of the vector, for example by treating the vector and the foreign DNA with a restriction enzyme and then ligating the fragments together.
After a DNA fragment has been cloned into a cloning vector, it may be further subcloned into another vector designed for more specific use.
To modifying the structure of a specific gene.
Gene targeting vector introduced into the cell.
Vector modifies the normal chromosomal gene through homologous recombination.
Useful in treating some human genetic disorders – Hemophilia, Duchenne Muscular Dystrophy.
Treating human diseases by genetic approaches – Gene Therapy.
Gene Therapy – Replacing the defective gene by normal copy of the gene.
Expressed sequence tag/EST is a short partial sequence, typically 200-400 bp long, of a complimentary DNA/Cdna.
EST is a short sub-sequence of a cDNA sequence.
Used to identify gene transcripts, and are instrumental in gene discovery and in gene-sequence determination.
Approximately 74.2 million ESTs are available in public databases.
EST results from one-short sequencing of a cloned cDNA.
Low-quality fragments.
Length is approximately 500 to 800 nucleotides.
This presentation covers a general introduction to expression vector, its components, types, and its application. Then it covers some of the expression system with examples.
Objectives:
After the end of the presentation we’ll know -
What is cloning vector?
Why cloning vector?
History
Features of a cloning vector
Types of cloning vector
Plasmid
Bacteriophage
Cosmid
Bacterial Artificial Chromosome (BAC)
Yeast Artificial Chromosome (BAC)
Human Artificial Chromosome (HAC)
Retroviral Vectors
What determines choice of vector?
Vector in molecular gene cloning
Cloning vector - The molecular analysis of DNA has been made possible by the cloning of DNA. The two molecules that are required for cloning are the DNA to be cloned and a cloning vector.
A cloning vector is a small piece of DNA taken from a virus, a plasmid or the cell of a higher organism, that can be stably maintained in an organism and into which a foreign DNA fragment can be inserted for cloning purposes.
Most vectors are genetically engineered.
The cloning vector is chosen according to the size and type of DNA to be cloned.
The vector therefore contains features that allow for the convenient insertion or removal of DNA fragment in or out of the vector, for example by treating the vector and the foreign DNA with a restriction enzyme and then ligating the fragments together.
After a DNA fragment has been cloned into a cloning vector, it may be further subcloned into another vector designed for more specific use.
To modifying the structure of a specific gene.
Gene targeting vector introduced into the cell.
Vector modifies the normal chromosomal gene through homologous recombination.
Useful in treating some human genetic disorders – Hemophilia, Duchenne Muscular Dystrophy.
Treating human diseases by genetic approaches – Gene Therapy.
Gene Therapy – Replacing the defective gene by normal copy of the gene.
Expressed sequence tag/EST is a short partial sequence, typically 200-400 bp long, of a complimentary DNA/Cdna.
EST is a short sub-sequence of a cDNA sequence.
Used to identify gene transcripts, and are instrumental in gene discovery and in gene-sequence determination.
Approximately 74.2 million ESTs are available in public databases.
EST results from one-short sequencing of a cloned cDNA.
Low-quality fragments.
Length is approximately 500 to 800 nucleotides.
This presentation covers a general introduction to expression vector, its components, types, and its application. Then it covers some of the expression system with examples.
Recombinant DNA Technology - A Perforated Insight By Rxvichu !!RxVichuZ
Hello friends................................this is me....Vishnu,back after a gap of almost three weeks, with another powerpoint presentation on RECOMBINANT DNA TECHNOLOGY....
Prepared as per Pharmacology syllabus for thrird year Pharm.D students, this 40-slide ppt involves precise details on the following aspects:
1. DEFINITION
2. PRINCIPLES INVOLVED
3. ENZYMES AND VECTORS USED
4. METHODS OF GENE TRANSFER
5. APPLICATIONS OF RECOMBINANT DNA TECHNOLOGY
Not just for Pharm.D , i do sincerely hope that it will be useful for others, on a study or reference cum reading basis too...............
Do post ur feedbacks....
Suggestions for further improvement will be gratefully acknowledged..........
For further details, connect to me in :
Facebook : Rx Vishnu
Gmail: rxvichu623@gmail.com
watsapp and hike: 8086948729
communication: the same number as above.
Keep reading well....study well.................keep rocking!!!
@rxvichu-live 4 more!!!!
:) :)
This presentation is all about biotechnology. It is about the basic aspects of Biotechnology and covers a lot of topics under biotechnology, recombinant DNA technology. This is specifically for the HSC students of Mumbai. I hope that it helps.
This is part two of the diabetes presentation aimed for pharmacists and allied health professional who are interested in tailoring special pharmaceutical care plans for diabetic patients.
Many have troubles choosing the proper insulin type and dosing for their patients.. Here is a quick presentation that introduce you to different studies in that matter.
This presentation is intended for healthcare prfessionals
NVBDCP.pptx Nation vector borne disease control programSapna Thakur
NVBDCP was launched in 2003-2004 . Vector-Borne Disease: Disease that results from an infection transmitted to humans and other animals by blood-feeding arthropods, such as mosquitoes, ticks, and fleas. Examples of vector-borne diseases include Dengue fever, West Nile Virus, Lyme disease, and malaria.
Recomendações da OMS sobre cuidados maternos e neonatais para uma experiência pós-natal positiva.
Em consonância com os ODS – Objetivos do Desenvolvimento Sustentável e a Estratégia Global para a Saúde das Mulheres, Crianças e Adolescentes, e aplicando uma abordagem baseada nos direitos humanos, os esforços de cuidados pós-natais devem expandir-se para além da cobertura e da simples sobrevivência, de modo a incluir cuidados de qualidade.
Estas diretrizes visam melhorar a qualidade dos cuidados pós-natais essenciais e de rotina prestados às mulheres e aos recém-nascidos, com o objetivo final de melhorar a saúde e o bem-estar materno e neonatal.
Uma “experiência pós-natal positiva” é um resultado importante para todas as mulheres que dão à luz e para os seus recém-nascidos, estabelecendo as bases para a melhoria da saúde e do bem-estar a curto e longo prazo. Uma experiência pós-natal positiva é definida como aquela em que as mulheres, pessoas que gestam, os recém-nascidos, os casais, os pais, os cuidadores e as famílias recebem informação consistente, garantia e apoio de profissionais de saúde motivados; e onde um sistema de saúde flexível e com recursos reconheça as necessidades das mulheres e dos bebês e respeite o seu contexto cultural.
Estas diretrizes consolidadas apresentam algumas recomendações novas e já bem fundamentadas sobre cuidados pós-natais de rotina para mulheres e neonatos que recebem cuidados no pós-parto em unidades de saúde ou na comunidade, independentemente dos recursos disponíveis.
É fornecido um conjunto abrangente de recomendações para cuidados durante o período puerperal, com ênfase nos cuidados essenciais que todas as mulheres e recém-nascidos devem receber, e com a devida atenção à qualidade dos cuidados; isto é, a entrega e a experiência do cuidado recebido. Estas diretrizes atualizam e ampliam as recomendações da OMS de 2014 sobre cuidados pós-natais da mãe e do recém-nascido e complementam as atuais diretrizes da OMS sobre a gestão de complicações pós-natais.
O estabelecimento da amamentação e o manejo das principais intercorrências é contemplada.
Recomendamos muito.
Vamos discutir essas recomendações no nosso curso de pós-graduação em Aleitamento no Instituto Ciclos.
Esta publicação só está disponível em inglês até o momento.
Prof. Marcus Renato de Carvalho
www.agostodourado.com
Ozempic: Preoperative Management of Patients on GLP-1 Receptor Agonists Saeid Safari
Preoperative Management of Patients on GLP-1 Receptor Agonists like Ozempic and Semiglutide
ASA GUIDELINE
NYSORA Guideline
2 Case Reports of Gastric Ultrasound
TEST BANK for Operations Management, 14th Edition by William J. Stevenson, Ve...kevinkariuki227
TEST BANK for Operations Management, 14th Edition by William J. Stevenson, Verified Chapters 1 - 19, Complete Newest Version.pdf
TEST BANK for Operations Management, 14th Edition by William J. Stevenson, Verified Chapters 1 - 19, Complete Newest Version.pdf
The Gram stain is a fundamental technique in microbiology used to classify bacteria based on their cell wall structure. It provides a quick and simple method to distinguish between Gram-positive and Gram-negative bacteria, which have different susceptibilities to antibiotics
Flu Vaccine Alert in Bangalore Karnatakaaddon Scans
As flu season approaches, health officials in Bangalore, Karnataka, are urging residents to get their flu vaccinations. The seasonal flu, while common, can lead to severe health complications, particularly for vulnerable populations such as young children, the elderly, and those with underlying health conditions.
Dr. Vidisha Kumari, a leading epidemiologist in Bangalore, emphasizes the importance of getting vaccinated. "The flu vaccine is our best defense against the influenza virus. It not only protects individuals but also helps prevent the spread of the virus in our communities," he says.
This year, the flu season is expected to coincide with a potential increase in other respiratory illnesses. The Karnataka Health Department has launched an awareness campaign highlighting the significance of flu vaccinations. They have set up multiple vaccination centers across Bangalore, making it convenient for residents to receive their shots.
To encourage widespread vaccination, the government is also collaborating with local schools, workplaces, and community centers to facilitate vaccination drives. Special attention is being given to ensuring that the vaccine is accessible to all, including marginalized communities who may have limited access to healthcare.
Residents are reminded that the flu vaccine is safe and effective. Common side effects are mild and may include soreness at the injection site, mild fever, or muscle aches. These side effects are generally short-lived and far less severe than the flu itself.
Healthcare providers are also stressing the importance of continuing COVID-19 precautions. Wearing masks, practicing good hand hygiene, and maintaining social distancing are still crucial, especially in crowded places.
Protect yourself and your loved ones by getting vaccinated. Together, we can help keep Bangalore healthy and safe this flu season. For more information on vaccination centers and schedules, residents can visit the Karnataka Health Department’s official website or follow their social media pages.
Stay informed, stay safe, and get your flu shot today!
These simplified slides by Dr. Sidra Arshad present an overview of the non-respiratory functions of the respiratory tract.
Learning objectives:
1. Enlist the non-respiratory functions of the respiratory tract
2. Briefly explain how these functions are carried out
3. Discuss the significance of dead space
4. Differentiate between minute ventilation and alveolar ventilation
5. Describe the cough and sneeze reflexes
Study Resources:
1. Chapter 39, Guyton and Hall Textbook of Medical Physiology, 14th edition
2. Chapter 34, Ganong’s Review of Medical Physiology, 26th edition
3. Chapter 17, Human Physiology by Lauralee Sherwood, 9th edition
4. Non-respiratory functions of the lungs https://academic.oup.com/bjaed/article/13/3/98/278874
ARTIFICIAL INTELLIGENCE IN HEALTHCARE.pdfAnujkumaranit
Artificial intelligence (AI) refers to the simulation of human intelligence processes by machines, especially computer systems. It encompasses tasks such as learning, reasoning, problem-solving, perception, and language understanding. AI technologies are revolutionizing various fields, from healthcare to finance, by enabling machines to perform tasks that typically require human intelligence.
Adv. biopharm. APPLICATION OF PHARMACOKINETICS : TARGETED DRUG DELIVERY SYSTEMSAkankshaAshtankar
MIP 201T & MPH 202T
ADVANCED BIOPHARMACEUTICS & PHARMACOKINETICS : UNIT 5
APPLICATION OF PHARMACOKINETICS : TARGETED DRUG DELIVERY SYSTEMS By - AKANKSHA ASHTANKAR
2. The Role of Recombinant DNA
Technology in Biotechnology
• Recombinant DNA Technology
– Intentional modification of organisms’ genomes for
practical purposes
– Three goals
• Eliminate undesirable phenotypic traits
• Combine beneficial traits of two or more organisms
• Create organisms that synthesize products humans need
3. Bacterial cell
DNA containing
gene of interest
Bacterial Plasmid
chromosome
Isolate plasmid. Gene of interest
Enzymatically cleave
DNA into fragments.
Isolate fragment
with the gene of
interest.
Overview of Insert gene into plasmid.
recombinant
Insert plasmid and gene into
DNA bacterium.
technology
Culture bacteria.
Harvest copies of
gene to insert into Harvest proteins
coded by gene
plants or animals
Eliminate Create Produce vaccines,
undesirable beneficial antibiotics,
phenotypic combination hormones, or
traits of traits enzymes
4. The Tools of Recombinant DNA
Technology
• Mutagens
– Physical and chemical agents that produce
mutations
– Scientists utilize mutagens to
• Create changes in microbes’ genomes to change
phenotypes
• Select for and culture cells with beneficial
characteristics
– Mutated genes alone can be isolated
5. The Tools of Recombinant DNA
Technology
• The Use of Reverse Transcriptase to Synthesize
cDNA
– Isolated from retroviruses
– Uses RNA template to transcribe molecule
of cDNA
– Easier to isolate mRNA molecule for desired protein
first
– mRNA of eukaryotes has introns removed
• Allows cloning in prokaryotic cells
6. The Tools of Recombinant DNA
Technology
• Synthetic Nucleic Acids
– Molecules of DNA and RNA produced in cell-free
solutions
– Uses of synthetic nucleic acids
• Elucidating the genetic code
• Creating genes for specific proteins
• Synthesizing DNA and RNA probes to locate specific
sequences of nucleotides
• Synthesizing antisense nucleic acid molecules
7. The Tools of Recombinant DNA
Technology
• Restriction Enzymes
– Bacterial enzymes that cut DNA molecules only at
restriction sites
– Categorized into two groups based on type of cut
• Cuts with sticky ends
• Cuts with blunt ends
9. Origin and function
• Bacterial origin = enzymes that cleave foreign DNA
• Named after the organism from which they were
derived
– EcoRI from Escherichia coli
– BamHI from Bacillus amyloliquefaciens
• Protect bacteria from bacteriophage infection
– Restricts viral replication
• Bacterium protects it’s own DNA by methylating
those specific sequence motifs
10. Availability
• Over 200 enzymes identified, many available
commercially from biotechnology companies
11. Classes
• Type I
– Cuts the DNA on both strands but at a non-
specific location at varying distances from the
particular sequence that is recognized by the
restriction enzyme
– Therefore random/imprecise cuts
– Not very useful for rDNA applications
12. Classes
• Type II
– Cuts both strands of DNA within the particular sequence
recognized by the restriction enzyme
– Used widely for molecular biology procedures
– DNA sequence = symmetrical
13. Classes
• Reads the same in the 5’ 3’ direction on both
strands = Palindromic Sequence
• Some enzymes generate “blunt ends” (cut in
middle)
• Others generate “sticky ends” (staggered cuts)
– H-bonding possible with complementary tails
– DNA ligase covalently links the two fragments together by
forming phosphodiester bonds of the phosphate-sugar
backbones
14. The Tools of Recombinant DNA
Technology
• Vectors
– Nucleic acid molecules that deliver a gene into
a cell
– Useful properties
• Small enough to manipulate in a lab
• Survive inside cells
• Contain recognizable genetic marker
• Ensure genetic expression of gene
– Include viral genomes, transposons, and plasmids
15. mRNA for human
growth hormone (HGH)
Antibiotic Restriction
resistance site
gene
Reverse
transcription
cDNA for HGH
Plasmid (vector)
Restriction Restriction
enzyme enzyme
Sticky ends
Gene for human
growth hormone
Producing a
recombinant
Ligase
vector
Recombinant plasmid
Introduce recombinant
plasmid into bacteria.
Bacterial Recombinant
chromosome plasmid
Inoculate bacteria
on media containing
antibiotic.
Bacteria containing
the plasmid with
HGH gene survive
because they also
have resistance gene.
16. Requirements of a vector to serve as
a carrier molecule
• The choice of a vector depends on the design of the
experimental system and how the cloned gene will
be screened or utilized subsequently
• Most vectors contain a prokaryotic origin of
replication allowing maintenance in bacterial cells.
17. Requirements of a vector to serve as
a carrier molecule
• Some vectors contain an additional eukaryotic
origin of replication allowing autonomous,
episomal replication in eukaryotic cells.
• Multiple unique cloning sites are often
included for versatility and easier library
construction.
18. Requirements of a vector to serve as
a carrier molecule
• Antibiotic resistance genes and/or other selectable
markers enable identification of cells that have
acquired the vector construct.
• Some vectors contain inducible or tissue-specific
promoters permitting controlled expression of
introduced genes in transfected cells or transgenic
animals.
19. Requirements of a vector to serve as
a carrier molecule
• Modern vectors contain multi-functional
elements designed to permit a combination of
cloning, DNA sequencing, in vitro mutagenesis
and transcription and episomal replication.
21. Choice of vector
• Depends on nature of protocol or experiment
• Type of host cell to accommodate rDNA
– Prokaryotic
– Eukaryotic
22. Plasmid vector
• Covalently closed, circular, double stranded DNA molecules
that occur naturally and replicate extrachromosomally in
bacteria
• Many confer drug resistance to bacterial strains
• Origin of replication present (ORI)
23. The Tools of Recombinant DNA
Technology
• Gene Libraries
– A collection of bacterial or phage clones
• Each clone in library often contains one gene of an
organism’s genome
– Library may contain all genes of a single
chromosome
– Library may contain set of cDNA complementary to
mRNA
24. Genome
Isolate genome
or organism.
Generate fragments using
restriction enzymes.
Production of a Insert each fragment
into a vector.
gene library-
overview Introduce vectors
into cells.
Culture recombinant cells;
descendants are clones.
25. Definition of recombinant DNA
• Production of a unique DNA molecule by
joining together two or more DNA fragments
not normally associated with each other
• DNA fragments are usually derived from
different biological sources
26. Steps involved in isolating a particular
DNA fragment from a complex
mixture of DNA fragments or
molecules
1. DNA molecules are digested with enzymes
called restriction endonucleases which
reduces the size of the fragments Renders
them more manageable for cloning purposes
27. Steps involved in isolating a particular
DNA fragment from a complex
mixture of DNA fragments or
molecules
2. These products of digestion are inserted into
a DNA molecule called a vector Enables
desired fragment to be replicated in cell
culture to very high levels in a given cell
(copy #)
28. Steps involved in isolating a particular
DNA fragment from a complex
mixture of DNA fragments or
molecules
3. Introduction of recombinant DNA molecule into an
appropriate host cell
– Transformation or transfection
– Each cell receiving rDNA = CLONE
– May have thousands of copies of rDNA molecules/cell
after DNA replication
– As host cell divides, rDNA partitioned into daughter cells
29. Steps involved in isolating a particular
DNA fragment from a complex
mixture of DNA fragments or
molecules
4. Population of cells of a given clone is expanded, and therefore so
is the rDNA.
– Amplification
– DNA can be extracted, purified and used for molecular analyses
• Investigate organization of genes
• Structure/function
• Activation
• Processing
– Gene product encoded by that rDNA can be characterized or modified
through mutational experiments