The General Growth Logistics of Cell Populations
| Autor: | Dieter Kaufmann, D. Bartkowiak, H. G. Kilian, Ralf Kemkemer |
|---|---|
| Jazyk: | angličtina |
| Předmět: |
Cell type
Relaxation Cell Biophysics CHO Cells Saccharomyces cerevisiae Biology Models Biological Biochemistry Quantitative Biology::Cell Behavior Colonies Mice Cricetulus Cell Line Tumor Cricetinae medicine Escherichia coli Animals Humans Structure and dynamics Cell Proliferation Genetics Growth logistics Original Paper Cell growth Large cell Cell Cycle Populations General Medicine Cell Biology Cell cycle Culture Media medicine.anatomical_structure Distribution (mathematics) Transmission (telecommunications) Melanocytes Cell multiplication Relaxation (approximation) Biological system |
| Zdroj: | Cell Biochemistry and Biophysics |
| ISSN: | 1085-9195 |
| DOI: | 10.1007/s12013-008-9012-9 |
| Popis: | An increment model based on thermodynamics lays bare that the cell size distributions of archaea, prokaryotes and eukaryotes are optimized and belong to the same universal class. Yet, when a cell absorbs mass or signals are processed, these conditions are disturbed. Relaxation re-installs ideal growth conditions via an exponential process with a rate that slows down with the cell size. In a growing ensemble, a distribution of relaxation modes comes in existence, exactly defined by the universal cell size distribution. The discovery of nano-mechanic acoustic activities in cells led us to assume that in a growing ensemble acoustic signals may contribute significantly to the transmission of essential information about growth-induced disturbances to all cells, initiating that way coordinated relaxation. The frequency increases with the cell number shortening the period between successive signals. The completion of rearrangements occurring at a constant rate is thus progressively impaired, until cellular growth stops, totally. Due to this phenomenon, the so-called "relaxation-frequency-dispersion" cell colonies should exhibit a maximum cell number. In populations with large cell numbers, subsystems, behaving similar-like colonies, should form network-like patterns. Based on these ideas, we formulate equations that describe the growth curves of all cell types, verifying that way the general nature of the growth logistics. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|