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AuthorMacken, Catherine A. author
TitleStem Cell Proliferation and Differentiation [electronic resource] : A Multitype Branching Process Model / by Catherine A. Macken, Alan S. Perelson
ImprintBerlin, Heidelberg : Springer Berlin Heidelberg, 1988
Connect tohttp://dx.doi.org/10.1007/978-3-642-93396-7
Descript VIII, 113 p. online resource

SUMMARY

The body contains many cellular systems that require the continuous production of new, fully functional, differentiated cells to replace cells lacking or having limited self-renewal capabilities that die or are damaged during the lifetime of an individual. Such systems include the epidermis, the epithelial lining of the gut, and the blood. For example, erythrocytes (red blood cells) lack nuclei and thus are incapable of self-replication. They have a life span in the circulation of about 120 days. Mature granulocytes, which also lack proliferative capacity, have a much shorter life span - typically 12 hours, though this may be reduced to only two or three hours in times of serious tissue infection. Perhaps a more familiar example is the outermost layer of the skin. This layer is composed of fully mature, dead epidermal cells that must be replaced by the descendants of stem cells lodged in lower layers of the epidermis (cf. Alberts et al. , 1983). In total, to supply the normal steady-state demands of cells, an average human must produce approximately 3. 7 x 1011 cells a day throughout life (Dexter and Spooncer, 1987). Common to each of these cellular systems is a primitive (undifferentiated) stem cell which replenishes cells through the production of offspring, some of which proliferate and gradually differentiate until mature, fully functional cells are produced


CONTENT

1. Introduction -- 2. A Multitype Branching Process Model -- 2.1 Probability Generating Functions -- 2.2 Moments -- 2.3 Modeling Unknown Types of Colony Initiating Cells -- 3. Characterization of Colony Growth with Time -- 3.1 Total Colony Size After n Generations -- 3.2 Probability of Completion of Growth -- 3.3 Stem Cell Growth -- 4. Colonies Reaching Completion -- 4.1 Number of Generations to Completion -- 4.2 Colony Size at Completion -- 5. Colonies Growing without Bound -- 5.1 Asymptotic Proportions of Cell Types in Colonies with an M-Cell Parent -- 5.2 Asymptotic Proportions of Cell Types in Colonies with an S-Cell Parent -- 6. Critical Processes -- 7. Results -- 7.1 Parameter Estimation -- 7.2 Total Colony Size After n Generations -- 7.3 Completion of Growth -- 7.4 Size at Completion of Growth -- 7.5 Asymptotic Proportion of Each Cell Type -- 8. Conclusions and Extensions -- Appendices -- B. Estimation of Branching Probabilities -- References


Mathematics Immunology Zoology Biomathematics Statistics Mathematics Mathematical and Computational Biology Statistics for Life Sciences Medicine Health Sciences Immunology Zoology



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