For decades, the development of dermatology relied predominantly on morphological observation and the clinical interpretation of symptoms. However, the growing understanding of the skin as an active immune organ, together with advances in modern technologies, has enabled investigation of the cellular mechanisms underlying clinical manifestations and has brought dermatology closer to the paradigm of precision medicine.
The present work substantiates the transition from morphological description of skin conditions to phenotypic analysis of its cellular subpopulations. It is demonstrated that the phenotype of skin-cell subpopulations may be regarded as a conceptual “unit” for explaining the diversity of skin states. Such an approach bridges the gap between observable symptoms and the underlying cellular processes that generate them.
The solution to this problem became possible through the development and patenting of methods for obtaining viable heterogeneous populations of skin cells and determining their subpopulation composition through the generation of a Skin Cytoimmunogram (SCIG). For the first time, it became possible to perform quantitative and functional assessment of cells within the local immune compartment of the skin during life. This opened the way to monitoring the dynamics of cellular phenotypes in both health and disease and established the foundations of precision diagnostics for immune-mediated dermatoses.
Experimental studies confirmed that changes in cellular subpopulation phenotypes can be instrumentally detected and correlate with both the clinical manifestations of disease and wound-healing processes.
It was established that quantitative changes in cell-surface molecules reflect membrane events that ultimately lead to the formation of morphological skin lesions. Thus, for the first time, a direct relationship between the cellular level of skin organization and its clinical manifestations has been demonstrated.
Based on these findings, the biotechnological product Cellgel was developed and implemented. Its mechanism of action is associated with the selective activation of cells expressing the CD34⁺CD45^dim phenotype. Its reparative, proliferative, and bacteriostatic effects, as well as its safety profile, were confirmed experimentally. Methods for its production, wound treatment applications, and industrial manufacturing specifications were subsequently developed.
The practical implementation of this work has been confirmed through patents, laboratory testing protocols, and industrial-scale production. In addition, a utility model device for the selective activation of the reparative potential of skin cells—the Amplifier of Reparative Potentials—was created, opening prospects for targeted intervention in phenotypically distinguishable cellular subpopulations. This work therefore demonstrates the possibility of controlled modulation of skin-cell states.
The synthesis of experimental dermatology, immunology, and conceptual analysis enabled the construction of a systematic model of the phenotypic diversity of skin cells. Conceptualization revealed classes of potential cellular states previously indistinguishable within dermatology and established a foundation for the development of new research programs.
the use of skin-cell subpopulation phenotypes as a conceptual “unit” for the analysis of skin states has been substantiated;
a methodological framework for modeling phenotypic diversity of skin cells has been developed through the synthesis of experimental and conceptual approaches;
the possibility of quantitative and functional assessment of viable skin cells by flow cytometry has been experimentally confirmed;
methods for obtaining viable heterogeneous populations of skin cells and determining their subpopulation composition through the generation of a Skin Cytoimmunogram have been developed and patented;
a diagnostic marker panel enabling precision assessment of the dynamics of cellular subpopulation states has been created;
the biotechnological product Cellgel, together with its manufacturing process and methods for treating wounds of various etiologies, has been developed;
a utility model of the Amplifier of Reparative Potentials for selective in vitro activation of skin cells has been created;
the productivity of interdisciplinary synthesis as a methodological basis for the future development of dermatology has been demonstrated.
The principal outcome of this work lies in the fact that dermatology has, for the first time, acquired an instrumental means of resolving the contradiction between observable clinical manifestations and the cellular mechanisms responsible for their formation. Dermatology is therefore now capable of operating not only with symptoms but also with calculated characteristics of skin states.
The transition from symptomatic to phenotypic analysis opens the prospect of predicting the development of pathological processes and exerting controlled influence upon them.
This transition represents not merely the introduction of a new method, but a change in the level of understanding of the discipline itself—from the description of external manifestations to the calculation and prediction of skin states on the basis of instrumentally measurable phenotypes of cellular subpopulations.
Phenotypic Dermatology is emerging as a new type of discipline: a theory and practice capable of operating with measurable characteristics of cellular skin states and integrating experimental data into clinical decision-making.
