Simulation and Modeling of Telocytes Behavior in Signaling and Intercellular Communication Processes

• Main Authors: Dragos Cretoiu, Simona Roatesi, Ion Bica, Cezar Plesca, Amado Stefan, Oana Bajenaru, Carmen Elena Condrat, Sanda Maria Cretoiu
• Format: Article
• Language: English
• Published: MDPI AG 2020-04-01
• Series: International Journal of Molecular Sciences
• Subjects: telocytes; telocyte network tracking and indexing; content-based image retrieval; image indexation; modeling of living cell behavior; viscoelastic constitutive laws
• Online Access: https://www.mdpi.com/1422-0067/21/7/2615

Background: Telocytes (TCs) are unique interstitial or stromal cells of mesodermal origin, defined by long cellular extensions called telopodes (Tps) which form a network, connecting them to surrounding cells. TCs were previously found around stem and progenitor cells, and were thought to be most likely involved in local tissue metabolic equilibrium and regeneration. The roles of telocytes are still under scientific scrutiny, with existing studies suggesting they possess various functions depending on their location. Methods: Human myometrium biopsies were collected from pregnant and non-pregnant women, telocytes were then investigated in myometrial interstitial cell cultures based on morphological criteria and later prepared for time-lapse microscopy. Semi-analytical and numerical solutions were developed to highlight the geometric characteristics and the behavior of telocytes. Results: Results were gathered in a database which would further allow efficient telocyte tracking and indexing in a content-based image retrieval (CBIR) of digital medical images. Mathematical analysis revealed pivotal information regarding the homogeneity, hardness and resistance of telocytes’ structure. Cellular activity models were monitored in vitro, therefore supporting the creation of databases of telocyte images. Conclusions: The obtained images were analyzed, using segmentation techniques and mathematical models in conjunction with computer simulation, in order to depict TCs behavior in relation to surrounding cells. This paper brings an important contribution to the development of bioinformatics systems by creating software-based telocyte models that could be used both for diagnostic and educational purposes.