Biotechnology-Genetic-Human Cells

Multiple sclerosis: autologous stem cell hope

A U.S. team has achieved encouraging results in the fight against multiple sclerosis (MS), using a new technique of autologous stem cells taken from bone marrow of the patient. The results of this trial was conducted in 21 patients in the first phase of the disease were published in the online version of Lancet Neurology.

This technique of autologous hematopoietic stem cells from their own bone marrow cells of the patient. The cells are harvested from bone marrow and the patient receives a cocktail of immunosuppressive drugs "anti-rejection." The injection of stem cells is then performed intravenously. This somehow "reset" the immune system.

In this study, 37 months after transplantation, 21 patients had no worsening of their condition, and 17 of them have seen a significant reduction in their handicaps.

Approximately 80,000 people in France suffer from multiple sclerosis, the forms and patterns vary widely from patient to patient. Multiple sclerosis is characterized by destruction of myelin, the protective coating around nerve fibers that transmit nerve impulses (see illustration below). Coordination problems, vision problems, dizziness, problems with the engine are some of the symptoms of the disease.

It is an autoimmune disease, ie, an attack of the immune system through the cells become aggressive, attack the body itself (in this case, myelin). Therefore, researchers are trying to "reset" the immune system by transplanting hematopoietic stem cells derived from bone marrow precursors of red blood cells and white cells (including lymphocytes).

Biotechnology

Biotechnology

Biotechnology is a set of methods and techniques used by genetic and physiological capabilities of living organisms to develop new products.

Advances in biotechnology to integrate various disciplines such as microbiology, biochemistry, genetics, molecular biology and computer science, and generate a variety of tools to break many industries and change the environment.

Biotechnology Applications

Pharmaceutical Research (Health)

Health is the first application of biotechnology. They bring new life to pharmaceutical research. Because many drugs are created through a better understanding of microorganisms and DNA research, biotechnology and pharmaceuticals can not get to the other.

Antibiotics

Some infectious diseases have been controlled since the 1940's by antibiotics, partly or wholly obtained by fermentation and vaccines through genetic engineering.

Chain reaction

The new diagnostic biotechnology emerged in the years 1980-1990: the art of molecular probes and chain reaction of polymerase. In a sequence combined with inherited ins, these probes may indicate the presence of a defective gene or genes of an intruder, due to an invasion of microbes in the body. Similarly, antibodies are able to accurately identify cells that do not meet (cancer) or foreign to the body, such as bacteria. Thus was born the field of rapid diagnostic kits based on the use of antibodies. In the case of pregnancy tests that detect the presence of a specific hormone of the fetus in the urine of women.

The sequencing of the human Genoni (proteomics / genomics)

Sequencing the human genome heralds a new era in pharmaceutical research. More effective drugs can now be seen as knowledge of the genome provides the ability to direct one or a few genes directly related to the disease. Proteomics is in charge of genomics to determine the role of the proteins produced by each gene.

Gene Therapy

Some conditions are associated with an abnormality or defect in the synthesis in the body of one or more molecules, as in the case of diabetes or hemophilia. It is now possible to produce large amounts of therapeutic substances similar to those produced by the body from bacteria, yeast, insect or mammalian cells genetically modified to be injected into the patient. You can also transfer the gene responsible for production of the active molecule of the missing person is in need of gene therapy.

Agriculture and Agri-Food (Plant Biotechnology)

The second important application of biotechnology in agricultural research in which there are three application areas: agriculture, food and the environment. Transgenic varieties (GMOs) was created to increase resistance to pests and diseases or to improve the nutritional quality of products. Many plant varieties are being tested, such as those held by natives secrete their own insecticides or genes that control the quality of growth and conservation. When all the genes are identified, transgenic plants may be resistant to cold, frost, drought and saline soils.

Transgenic animals (Animal Biotechnology)

Transgenic animals in which gene pools were introduced one or more foreign genes, working in research laboratories to study the mechanisms of the genesis of cancer, cardiovascular diseases, diseases of bacterial or viral.

ANTAGONIZING ATHEROSCLEROSIS

Antagonize atherosclerosis

France - Atherosclerosis or fatty plaque accumulates in the arterial wall is the source of most cardiovascular diseases. While B cells of the immune system were considered as elements of protection against the formation of these plaques, the researchers from Inserm now refute this hypothesis. These results were published in the Journal of Experimental Medicine.

Atherosclerosis is an inflammatory disease of the arteries caused by several factors, including increased cholesterol and is characterized by an accumulation of lipids (fats) in the arterial wall in the form of plates. The rupture of these plaques is responsible for most cardiovascular diseases such as myocardial infarction or stroke. These diseases are the leading cause of death in industrialized countries. It is therefore essential to identify patients at risk and to understand the progression of the disease, to prevent and treat it.

The immune response (macrophages, B cells, T cells) ranging from

people plays an important role in the progression of these plaques and therefore in the development of cardiovascular disease complications. To date, the role assigned to all B cells seems protective of atherosclerosis.

However, the work of Ziad Mallat now clearly refute this hypothesis. The researcher has actually shown that using an antibody against B cells and cause the disappearance of 96%

provides significant protection against the development of atherosclerosis. This antibody is

very effectively in humans for the treatment of certain inflammatory diseases. The protective effect is due to decreased production of an immune system hormone, interferon gamma, which promotes atherosclerosis and increased interleukin-17 a protective hormone.

These findings have important clinical implications. They suggest that therapies directed against B cells present in patients suffering from inflammatory diseases such as

lupus or rheumatoid arthritis, may reduce cardiovascular risk. Clinical trials have been made in this direction for the team and to evaluate the extent of atherosclerosis before and after treatment.

SIRNA Synthesis

Small interfering RNA (siRNA), sometimes known as small interfering RNA or silencing RNA, are a class of 20-25 nucleotide-long double-stranded RNA molecules that play a variety of roles in biology. More specifically, the siRNA is involved in RNA interference (RNAi) pathway where the siRNA interferes with the expression of a specific gene. Besides its role in the process of RNAi, siRNAs also act in RNAi-related pathways, such as a viral mechanism or in shaping the chromatin structure of a genome, the complexity of these pathways is only to be understood.

siRNA

siRNA were discovered by David Baulcombe's group in Norwich, England, as part of post-transcriptional gene silencing (PTGS) in plants, and published their findings in Science in an article entitled "A species of small antisense RNA post-transcriptional gene silencing in plants. "Soon after, in 2001, synthetic siRNAs are shown below, be able to induce RNAi in mammalian cells by Thomas Tuschl and colleagues in a paper published in the journal Nature. This discovery has led to renewed interest in the exploitation of RNAi for biomedical research and drug development.

RNA Genetics

With over 20 years of experience in custom synthesis for the biomedical research community, the BSI has developed the experience to offer synthesized RNA with a quality that meets all your RNAi, siRNA, shRNA and other projects RNA.

Ribonucleic acid (RNA)

Ribonucleic acid (RNA) is a nucleic acid and consists of a long chain of nucleotide units. Each nucleotide consists of a nitrogenous base, a ribose sugar and phosphate. RNA is very similar to DNA, but differs in some structural details important in cell-stranded RNA is usually single, while DNA is usually double stranded.

Unmodified RNA

Over 100 different types of chemical modifications have been identified in thousands of sites in the tRNA, rRNA, mRNA, small nuclear RNA and other RNA. Some modifications are highly conserved, while others are more specialized.

genetic

Genetics (from Ancient Greek γενετικός Genetik, "genitive" and that from γένεσις genesis, "origin"), a discipline of biology is the science of heredity and variation in living organisms. The fact that living things inherit traits from their parents has been used since prehistoric times for improving crop plants and animals of selective breeding. However, modern science of genetics, which seeks to understand the succession process has begun with the work of Gregor Mendel in the mid-nineteenth century.

Biotechnology -rna Genes

Messenger RNA (mRNA) is generated to be translated into proteins, many kinds of "noncoding" RNA also exist and these complex molecules share the property of being nontranslatable. The traditional categories of non-coding RNA is ribosomal RNA and transfer RNA, which are involved in the translation process.

uring the past decade, RNA interference (RNAi) has emerged as a natural mechanism for silencing gene expression. This ancient cellular antiviral response can be exploited to allow specific inhibition of gene function chosen destination. RNAi is proving to be a valuable research tool, allowing much faster characterization of the function of known genes. More importantly, RNAi technology considerably strengthens functional genomics to help in identifying new genes involved in disease processes. This review describes the basic principles of molecular biology of RNAi phenomenon and examines the main technical issues regarding optimization of RNAi experimental design.

RNAi is a mechanism in molecular biology where the presence of certain fragments of double-stranded RNA (dsRNA) interferes with the expression of a particular gene that share a similar sequence with the dsRNA.

This study defines the dollar volume of sales, both worldwide and in the U.S., and analyzes the factors that influence market size and growth for RNAi testing. The main objectives of this study are:

1) understand the different sectors of RNAi testing market and a description of the instruments, reagents and supplies marketed by major companies in each segment;

2) to obtain a complete understanding of the individual RNAi-testing platforms, the basic principles of clinical applications;

3) discovering the potential market opportunities by identifying high-growth applications in different fields of diagnostic tests, with a focus on major markets and expansion;

4) focus on industry developments and global trends through an in-depth analysis of major markets in the world of RNAi measurement technology, including forecasts for growth and

5) Current market figures regarding the current value of RNAi testing, market projections, market share, key players and sector growth rates.

Biotechnology

Biotechnology is a field of applied biology that involves the use of living organisms and bio-engineering, technology, medicine and other biological products. Biotechnology is also used to manufacture these products. The conditions include similar use modern genetic engineering and cell culture technologies and fabrics. The concept covers a wide range of procedures (and history) in exchange for living organisms according to the needs of man - dating back to the domestication of animals, cultivation of plants, and "improvements" to these programs through improvement that the use of artificial selection and hybridization. Compared with biotechnology, bioengineering is generally considered a field related to their greater emphasis on systemic approaches to high (not necessarily change or use of biological materials directly) to interact with and use of living things. The United Nations Convention on Biological Diversity defines biotechnology as: [1]

"Any technological application that uses biological systems, living organisms or derivatives thereof to make or modify products or processes for specific use."

In other words "the application of scientific and technical advances in life sciences to develop commercial products," is biotechnology.

Biotechnology is based on pure biological science (genetics, microbiology, animal cell culture, molecular biology, biochemistry, embryology, cell biology) and in many cases depends on the knowledge and methods from outside the field of biology (chemical engineering, bioengineering, information technology, Biorobotics). By contrast, the modern biological sciences (including concepts such as ecology, even molecular) are closely linked and dependent on the methods developed by biotechnology and what is commonly regarded as the industry life sciences.