A theoretic modeling of the specific features of self-regulation of an organism's cell growth has shown that specialized cell populations should exist to carry out intercellular regulation of the growth of various types somatic tissues. Based on the data of immunology and cell biology, it is suggested that such a system should be represented by specialized T-lymphoid cells. The age-related decrease in the function of such regulatory cells may be the main mechanism of aging of the organism's selfrenewing somatic tissues and may determine an age-related decrease in the growth potential of tissues of an aged organism.
Keywords: aging, theory of aging, immunity
Advances in Tissue Engineering and Regenerative MedicineReview Article Open Access
The interstitial mechanisms of regulation of cell growth and the role of the immune system: a new immune theory of aging 214Copyright: ©2017 Dontsov Citation: Dontsov VI. The interstitial mechanisms of regulation of cell growth and the role of the immune system: a new immune theory of aging. Adv Tissue Eng Regen Med Open Access. 2017;2(4):213-217. DOI: 10.15406/atroa.2017.02.00036 equal to three: two populations stimulate each other (Ga and Gh) and one of them inhibits the growth of the others (Gi): This cellular hypercycle is described by its features as follows: self-renewal, self-regulation, self-recovery (which is the same for the present consideration).Subsequent trends in the evolution of this hypercycle are clear: first, an increase in the number cell populations; second, specialization:A. Indirection of special functions (the formation of the e.g., liver, kidneys, and skin: Ga, Gb....Gn):B. In direction of cell growth regulation by isolation of stimulating (Gh) and inhibiting (Gi) populations of regulatory cells into a special system (let us call it a "system of cellular regulation of proliferation (SRP)".In terms of immunology and theories of "regulatory nets," this can be presented as a positive selectiol specific clones, e.g., lymphocytes, during idiotoip-organ interactions. In its final form, the SRP should also take into account the appearance the evolution of the deep rest phase (Go) for the cells functional organs and tissues, because tissue function is of great importance for the organism as a whole; however, the appearance of such a phase only complicate the function of regulatory cells of the CRP-system. It should be emphasized that such a system as a whole is stable and possesses properties of selfformation, self-recovery, and conversion into the stable state under any disturbance -external influence.
T-lymphocytes as regulators of somatic cell growthThe main issue from the above is: what cells are crucial for the regulation of somatic cell growth in contemporary humans and mammals? Both theoretical concepts and experimental data clearly indicate that the main role in these processes belongs to T-lymphocytes-regulators (helpers and suppressors), namely, to their nearest precursors (presumably, nonspecific CRP) and to T-cells, which participate in the ...