Month: September 2022

ATP INDEPENDENT. "A first implication of this idea is that through mechanisms that are as yet unclear, mitochondria may play a key role in somatic stem cell maintenance that is not dependent on ATP production. Indeed, loss of quiescence is typically associated with stem cell depletion and a shift toward OXPHOS and may be mediated at least to some extent by increased selection and attrition." (OXPHOS = oxidative phosphorylation). http://www.sciencedirect.com/science/article/pii/S193459091500209X View in LinkedIn

THE QUIET EXECUTIONER. "A second implication is that mitochondria may be both the driving force and one of the executioners of the aging process. Aging is associated with mitochondrial dysfunction and bioenergetic failure. mtDNA is highly susceptible to mutation and deletion." http://www.sciencedirect.com/science/article/pii/S193459091500209X View in LinkedIn

INFLAMMATORY AGING THEORY. "Aging is characterized by a state of inflammation that may set in motion or perpetuate aging in other tissues. The aging hematopoietic system may itself be a source of inflammatory mediators, produced by senescent memory lymphoid cells, which predominate in the immune system of aged individuals." http://www.sciencedirect.com/science/article/pii/S193459091500209X View in LinkedIn

THE CRUX. "If there were no regeneration, there could be no life. If everything regenerated there would be no death." (R. J. Goss, Principles of Regeneration,1969). https://lnkd.in/g4Nz9Kh View in LinkedIn

PLANT REGENERATION (due to modular and decentralized design). "Plants can regenerate all body parts from precursor cells. Many trees, for example, can be cut off at the ground and, in due course, sprouts appear at the margins of the stump. These go on to develop new stems, leaves, and flowers. In the laboratory, entire plants can develop from a mass of undifferentiated cells growing in culture." https://lnkd.in/gqsdWf4 View in LinkedIn

DIFFERENTIATION. "During the early development of an organism, a certain cell type divides, and then its descendants gradually form stable differences in morphology, structure, and function, finally producing numerous different cell phenotypes. This process, differentiation, is the fundamental basis for development.” https://lnkd.in/gxtx9hi View in LinkedIn

DEVELOPMENT LIMITS. "During animal development, cells become progressively constrained to a certain cell type, and the capacity to respond to a variety of differentiation signals declines after each generation. In other words, the process of differentiation gradually reduces the potential of a cell. In the final stage of differentiation, the cell is thought to stop dividing permanently." https://lnkd.in/gxtx9hi View in LinkedIn

FATE REVERSAL. "It has long been thought that once mammalian cells are committed to a specific lineage, they can no longer change their fate, and thus they become so-called terminally differentiated cells. But recent studies suggest that differentiated mammalian cells can be induced to assume new fates under appropriate conditions, a phenomenon termed dedifferentiation." https://lnkd.in/gxtx9hi View in LinkedIn

DEDIFFERENTIATION. "During limb regeneration adult tissue is converted into a zone of undifferentiated progenitors called the blastema that reforms the diverse tissues of the limb. Previous experiments have led to wide acceptance that limb tissues dedifferentiate to form pluripotent cells." https://lnkd.in/gcYRVjY View in LinkedIn

REGRESSION TO SIMPLICITY. "Dedifferentiation is an important biological phenomenon whereby cells regress from a specialized function to a simpler state reminiscent of stem cells." http://bioscience.oxfordjournals.org/content/57/8/655.full View in LinkedIn