Scope of Biotechnology What is Biotechnology? Definition
Any technique that uses living organisms or substances from those organisms to make or modify a product, to improve plants or animals…. Or to develop microorganisms for specific uses.
Biotechnology in Brief
Biotechnology helps to meet our basic needs like food, clothing, shelter, health and safety Improvements by using science Science helps in production plants, animals and other organisms Also used in maintaining a good environment that promotes our well being Using scientific processes to get new organisms or new products from organisms. Includes many approaches and methods in science and technology
Why Biotechnology?
Knowledge-based approach Offers unique solutions Integrates technology delivery Scale-neutral Does not displace traditional methods Environment-friendly Portable - across crops Versatile - impact on all facets of food chain from producers to consumers
Agricultural View
All of the applied science based operations in producing food, fiber, shelter, and other products Milk production New horticultural and ornamental plants Wildlife, aquaculture, natural resources and environmental management
Organismic Biotech
Goal – improve organisms and the conditions in which they grow Working with complete, intact organisms or their cells Organisms are not genetically changed with artificial means Help the organism live better or be more productive Study and use natural genetic variations
Cloning is an example of organismic biotech
Cloning
Process of producing a new organism from cells or tissues of existing organism. 1997 cloned sheep – “Dolly” in Edinburgh Scotland
Molecular Biotech
Changing the genetic make-up of an organism Altering the structure and parts of cells Complex! Uses genetic engineering, molecular mapping and similar processes
Biotech fields
Medicine Agriculture Environment Forestry Food and beverage processing
Medicine
Some Some new develo developme pments nts delve delve into into the heredi hereditar tary y materi material al of humans humans known known as gene gene therapy Therapeutant - product used to to maintain health or or prevent disease Biopharmaceuticals – drug or vaccine developed through biotechnology Called designer drugs
Environment
Any biotechnological process that may promote a good environment. Organisms developed during the gulf war to “eat” oil. Prob Proble lems ms natu natura rally lly solv solved ed by micr microo oorg rgan anis isms ms such such as bact bacter eria ia,, fung fungii brea break k down down contaminant into a form less harmful or not harmful.
Plant biotech
Improve plants and the products produced from them Insect and disease resistance Engineered to have desired characteristics
Animal Biotech
Improve animals or the products they produce
Animals may be used to produce products that promote human health Increase productivity
Food and Beverages
Use of technology in producing and processing Yeast in baking bread Genetically altered crops rBGH milk
Biotechnology in India: Biotechnology In India has grown by manifolds. India has proved itself as an ideal setting to manufacture and allow high-level research programmes in biotechnology. Several initiatives has been taken up by the Government of India. In the year 1986, the Department of Biotechnology (DBT) was set up under the Ministry of Science and Technology. This set up was a true boost to the developmental phase of biotechnology in India. Since then many Centres of Excellence were set up by the DBT in India to generate skilled manpower and to support the R&D sector of several private companies. Several biosafety guidelines have been laid by the Government of India to help with the patent rules, participate in the international collaborations. A decent regulatory framework has been set for approval of GM crops and all r-DNA products. All ethical guidelines are also considered with all types of biotechnological research including the stem cell research . But have you ever given a thought as to what has made India so popular and eligible to be established as an ideal Biotechnological Center ? There are various reasons like•
Skilled manpower
•
Trained knowledge base
•
Well-established network of research laboratories
•
Richness in Biodiversity (example availability of a variety of gene pools allowing better genomic study)
•
Well developed base industries (including seeds or pharmaceuticals industry)
•
Easy access to intellectual resources of Non-Resident Indians
•
Extensive clinical trials and research
•
Access to diverse diseases
•
Agriculture being the prime occupation in India, a steady growth may be observed with the Agribiotech sector
Biotechnology may be as old as human civilization but modern biotechnology is less than three decades old. Traditional Biotechnology that led to the development of processes for producing products like yogurt, Vinegar, alcohol and cheese was entirely empirical and bereft of any
understanding of the mechanisms that led to the product. There was no possibility of a deliberate design to produce a desired new product.
Consumption of Biotechnological Products In India Biotech Products
Actual Consumption in 1999
Estimated
Future Consumption
Consumption for 2005 estimated for the year 2010
Human & Animal Healthcare Products
32240 (37.5)*
35320 (37.6)*
93540 (40.0)*
Agricultural Products
25670 (29.8)*
28880 (30.7)*
78720 (33.7)*
Industrial Products
27090 (31.5)*
28500 (30.3)*
53590 (22.9)*
Other Biotechnology products
1040 (1.2)*
1300 (1.4)*
7940 (3.4)*
Total
86040 (100)*
94000 (100)*
233790 (100)*
In Million US Dollars
1789
2186
4270
(* contributions in percentage (%) of the total)
Biotech Industry Exports of different sectors during FY 2009-10 Segment
BioPharma
2008-09
2009-10
Exports Rs Crore (US$ Million)
Percentage Share (%)
Exports Rs Crore (US$ Million)
Percentage Share (%)
7883
62
8829
54
(1,740.78)
(1,949.58)
BioServices
2062 (454.75)
95
2639 (582.88)
95
BioAgri
1413 (311.94)
4
1936 (427.61)
3
BioIndustrial
478 (105.56)
11
564 (124.56)
22
Bioinformati cs
220 (48.58)
23
231 (51.02)
32
12137 (2,680.63)
59
14199 (3,132.38)
53.04
Total
Source: Association of Biotechnology led Enterprises (Able)
Indian Players in Biotechnology :
MNCs Scripting Success in India
Indian Advantage
In modern biotechnology, we use the in- depth understanding we have gained in the last five decades. The mechanisms that underlie the variety of functions performed by living organisms, to produce a desired new or old product. In the case of an established product, the new biotechnological process is cheaper and better in many respects than the earlier processes. Modern biotechnology has been, infact, an historical imperative. Its emergence on the world scene was predicted at least four decades ago. The term, genetic engineering, was coined independently in 1973 by the author of an article in The Guardian in the UK, and in a syndicated article by the present author in India. Today’s biotechnology consists of at least twenty-five areas each area being characterized by the use of a different set of technologies. At fresh, there can be investments of Rs. 7-8 billion over the next five years in India in biotechnology. This investment is expected to result in a turnover of Rs. 9-10 billion over the next 5-7 years. The expected growth of Biotechnology in India can be followed in the following industries – Industry Type
Agribiotech
Expected Growth in %
60
Diagnostic And therapeutics 25
Vaccines
15
Genetic engineering: Genetic Engineering of microbes, plants and animals (including marine
animals). Genetic engineering implies conferring new capabilities on an organism by Transferring into an organism the appropriate DNA (De oxyribo Nucleic Acid, the genetic material) of another having these capabilities does this. Then ensures that these capabilities are converted into abilities. Thus the common yeast, Sacchromyces cerevisciae cannot make the protein, human insulin, but we can make it to do so by introducing in it the gene for human insulin (that is, the appropriate DNA fragment coding for this protein). After integrating the insulin gene in yeast DNA, creates condition for the insulin to express itself to produce insulin through the normal process of transfer of information from DNA to protein. Genetically engineered microbes are today widely used for producing drugs and vaccines in large scale at low costs that are of great importance (human insulin, erythropoietin, and hepatitis-B vaccine). For example genetically engineered plants that make their own pesticides or are resistant to weedicides- are already in the market. Thus, over 60 percent of the acreage under soyabean in the United States have now genetically engineered soyabean that is resistant to the weedicides, Roundup. The total acreage under genetically engineered crops (for good or for bad) around the world exceeds 100 million acres today. Genetically engineering plants are also poised to produce vaccines. A few hundred acres of genetically engineered banana plantation can provide enough vaccine to immunize 120 million children every year that need to be protected against four common diseases. One of the future sources of cheap protein-drugs in the coming years, would be genetically engineered animals who would secrete these drugs in abundance (1-15 mg/ml) in their milk. They will be available at a cost of three or more times lower than the current cost. Thrust Areas For Biotechnology In India Area Of Investment
Estimated Investment (in millions)
Vaccines
300-400 *
Diagnostics
500 *
Bioactive Therapeutic Proteins
1000 *
Seeds (GM and hybrids)
1500 *
Biopesticides
800 *
Biofertilizers
200 *
Amino Acid Production
700 *
Production of speciality biochemicals and peels 1000 * (* denotes the estimated investment over next 5 years)
Gene Therapy: This is in a way, genetic engineering of humans, which would allow a person
suffering from a disabling genetic disorder to lead a normal life. Besides genetic diseases, gene therapy has tremendous scope for treatment of several disorders such as cancer, cardiovascular and neurological disorders. To initiate gene therapy the functional studies should be focused on (i) design of newer vectors for gene delivery, newer approaches to systemic delivery, (ii) targeting to specific tissues and cells, (iii) stability and duration of expression of gene introduced, (iv) the statutes of the introduced genes in vivo, (v) design of appropriate animal models, (vi) assessment of risk-benefit states, and (vii) an understanding of molecular basis of cellular humoral immune response in case of DNA vaccines Immunotechnologies: Such as monoclonal antibodies (MABs) for diagnosis and therapy.
Antibodies, special sets of proteins present in humans that enable them to fight incursion of their bodies by harmful chemicals or micro organisms. Monoclonal antibodies are single chemical species of antibodies produced in the laboratory by a special technique. Nobel Prize was awarded for this in the 1980’s to Cesar Milstein and Georges Kashler. Mouse MAB’s can be used for the diagnosis of human diseases. As human MABs are difficult to produce in the laboratory, genetically engineered plants are likely to find wide application in the production of human MABs. Tissue culture: Tissue culture of both plant and animal cells. These are used for Micro
propagation of elite or exotic materials (Such as orchids), production of useful compounds such as taxol (the widely used anti-cancer drug) and vanillin, and preparation in the laboratory of “natural” tissues such as arteries for arterial graft or skin for burn victims. (Modern tissue culture technologies allow the multiplication in the laboratory of cells isolated from plants and animals. In the case of plants, one can grow in the lab a whole plant from a single cell.) Stem cell techniques: Which would involve purification and isolation of stem cells from various
tissues and develop into the desired tissue which could then be used, for example, for transplantation. Stem cells can be either totipotent (have the capability to produce any desired cell type or organ of the body under specific conditions) or they could be pluripotent (able to develop into several though not all cell types or organs). As embryonic stem cells are more likely totipotency than stem cells from adult tissues, the immediate emphasis in the area of stem cells is going to be first in the direction of establishing cell lines derived from early human embryos,
from
which
stem
cells
could
be
isolated.
Enzyme engineering and technology: Involves immobilized or stabilized enzymes, new
classes of enzymes (ribozymes) or new enzymatic routes that produce important organic compounds. Enzymes are biological catalysts (Generally proteins) poised to replace inorganic catalysts, which are used in chemical industry. (Proteins are abundant biological entities made up of twenty amino acids strung together like pearls in a necklace, by a special type of thread- a chemical bond called the peptide bond. One protein differs from another in the total number of amino acids and their sequence in the chain.) Photosynthetic efficiency: Increasing photosynthetic efficiency for biomass production in the
plant with the same amount of light and other inputs.
New DNA technologies: These include DNA fingerprinting, sequencing of genomes,
development and use of new molecular markers for plant identification and characterization. Also the development of DNA- based probes for diagnosis of inherited disorders, antisense technologies that are aimed at blockage of the function of a particular stretch of DNA and computing using DNA. Plant-based drugs: Use of modern biological techniques for validation, standardization and
manufacture of indigenous plant-based drug formulations. Peptide synthesis: Synthasis to make new drugs or other materials of industrial and
commercial importance, such as salmon GnRH analogue (Ovaprim) to induce ovulation in fish. (Peptides are small proteins, generally containing less than 50 amino acid moieties.) Rational drug design: Until a decade or so ago, the only way to discover a new drug was to
synthesize a large number of compounds hoping that one of them will be effective against a particular disease. And it cost something between half a billion to a billion dollars for bringing a new drug to the market. As a result we have not added more than ten new drugs per year to the repertoire of medicines already available. In rational drug design, we first identify the molecular target we wish to attack. To do so, it becomes necessary to understand the mechanism of causation of the disease. Once we understand this mechanism and identify the molecular target lead effective computerized programs to design a molecule, which would hit the target. This approach of designing a drug on a rational basis cuts the cost of discovery of a new and reduces the time required (Now 12-15 years) by half. Nutraceuticals: That helps recovery after surgery or an episode of a major disease, or helps
protect one against certain medical and health problems. For example, a Swedish company, Probi, has isolated a strain of Lactobacillus planetarum, which is apparently present in the digestive tract of Europeans and Amercians. (Indians have not yet been tested for its presence). The presence of this organism has been correlated with the ability of the person to recover after major surgery or after chemotherapy of cancer; this organism also seems to protect people against a vast range of stomach disorders including stomach ulcerts, irritable bowel syndrome
and constipation. Probi is, therefore, marketing this organism in various forms, including a delicious soft drink! Assisted reproductive technologies: Such as artificial insemination (Using husband’s or donor
semen), invitro fertilization, intra cytoplasmic sperm injection and techniques involving egg donation, surrogate motherhood or embryo transfer.New cloning technologies: - Cloning of genetically engineered animals that would produce useful products. Organ transplantation: Xenotransplantation that is transplantation into humans of organs from
other animals. It appears that pig may be the most suitable for this biochemically, anatomically and immunologically. The major problem in xenotransplantation is the hyper-acute immunological rejection of the “ foreign organ” which occurs in a matter of minutes in enotrans plantation. This problem has been recently overcome by identifying the molecular basis of the hyper-acute rejection and then genetically engineering a pig to avoid it. But in the case of a kidney transplant from one human donor to another human recipient (homotransplantation) this does not occur.
New drug-delivery systems: Such as lipsomes and electrical patches, and the use of circadian
rhythms to optimize the effectiveness of the drug. Thus the drug may depending on the circadian rhythm of the individual will be effective when taken at noon and midnight, than if taken at 6 AM and 6 PM. Production of useful materials: Existing (for example, polyunsaturated fatty acids or beta-
carotene, both of which are essential for normal vision) or new, from so far unutilized or under utilized but widely available resources such as marine organisms. Production of new materials using new ideas: Observations or research findings, such as
bacterial ropes or biodegradable polymers. For example, bacterial ropes that essentially consist of certain mutant bacteria that have the ability to grow into spagetti-like structures, when impregnated with certain metal ions can be stronger than steel but much lighter and biodegradable. DNA vaccines: Which would be much cheaper than protein antigen-based vaccines that are
generally used today. New medical diagnostic technologies: - such as combination of MRI and Pet-SCAN for correlation of structure and function in normal and diseased individuals. Biosensor: For example, optical sensors using special thin films for detection of bacteria. Use of microbes: Microbes selected or genetically engineered for effecting chemically difficult
transformations, for example in the field of steroids that are widely used as drugs. Bioremediadtion: For example of effluents or waste, using biological systems. A septic tank
and an oxidation pond are simple examples of such bioremediation. Production of biogas is value-added bioremediation!
Processing of low-grade ores using microorganisms: Commercially viable bio processes are
available today for processing such ores of over a dozen metals. Bioinformatics, including genomics and proteomics: This newly emerging area makes use
of the enormous amount of data on biological systems that are becoming available. There are several million species known. The sequence of the building blocks of DNA of just one human being alone will fill nearly 700 books (typed single space) of 500 pages each. Nanobiotechnology: In which the operating or useful unit is of the scale of, say, a nanometre
(millionth of a millimeter). Biological warfare: This is defined as the ’employment of biological agents to produce
casualties in man or animals or damage to plants. While a biological attack could result in a made-made epidemic of unprecedented scale, the classical principles of clinical medicine and epidemiology would apply. Prompt diagnosis and early interventions could reduce morbidity and mortality, and mitigate the effects of a biological attack.
Advantages of biotechnologies
Biotechnologies are always non-polluting and, often, labour intensive. They make use of replenishable natural resources and help their conservation. They help, directly or indirectly, in saving energy. The cost of products produced through a biotechnological process is almost always less than that of the same product product produced, say, through a chemical synthetic route. Biotechnologies are less accident-prone. In spite of their high level of intellectual sophistication, it is easier to train people to handle biotechnologies than other technologies. Above all, they are interesting and exciting for all those involved with them.
