Bruce Lipton - The New Biology - Where Mind and Matter Meet 1of 2.avi.
Genetics, Epigenetics, and Destiny. Interview with Dr. Bruce Lipton Author: Danielle Graham Bruce Lipton, scientist, researcher, teacher, and author, is driven by a passion to bring scientific evidence directly to the people his information could best assist: everyone. His journey of discovery began as a cell biologist cloning stem cells to understand their control mechanism.
This research was undertaken while teaching cell anatomy to medical school students at the University of Wisconsin. Further research conducted at Stanford’s School of Medicine revealed that genes were turned on and off, not by the genes themselves, but through external, environmental stimuli. Scientific theorems are slow to evolve and these new concepts have not yet been fully integrated into the mainstream of academia, partly due to the fact that the training of health professionals is deeply vested by the pharmaceutical industry and the even greater promise of lucrative gene therapies. We asked Dr. Epigenetics is a new model of gene expression. Control of Gene Expression. Return to The Medical Biochemistry Page © 1996–2013 themedicalbiochemistrypage.org, LLC | info @ themedicalbiochemistrypage.org The controls that act on gene expression (i.e., the ability of a gene to produce a biologically active protein) are much more complex in eukaryotes than in prokaryotes.
A major difference is the presence in eukaryotes of a nuclear membrane, which prevents the simultaneous transcription and translation that occurs in prokaryotes. Whereas, in prokaryotes, control of transcriptional initiation is the major point of regulation, in eukaryotes the regulation of gene expression is controlled nearly equivalently from many different points. back to the top In bacteria, genes are clustered into operons: gene clusters that encode the proteins necessary to perform coordinated function, such as biosynthesis of a given amino acid. RNA that is transcribed from prokaryotic operons is polycistronic a term implying that multiple proteins are encoded in a single transcript. 1. 2. 3. Two Papers Broaden Understanding of Epigenetic Control. Epigenetic control. [J Cell Physiol. 2009. Epigenetics. One example of an epigenetic change in eukaryotic biology is the process of cellular differentiation.
During morphogenesis, totipotent stem cells become the various pluripotent cell lines of the embryo, which in turn become fully differentiated cells. In other words, as a single fertilized egg cell – the zygote – continues to divide, the resulting daughter cells change into all the different cell types in an organism, including neurons, muscle cells, epithelium, endothelium of blood vessels, etc., by activating some genes while inhibiting the expression of others.[5] Historical usage of "epigenetics"[edit] The term "epigenetics" has also been used in developmental psychology to describe psychological development as the result of an ongoing, bi-directional interchange between heredity and the environment.[13] Interactivist ideas of development have been discussed in various forms and under various names throughout the 19th and 20th centuries.
Contemporary usage of "epigenetics"[edit]