Elsevier

Mathematical Biosciences

Volume 143, Issue 2, 15 July 1997, Pages 103-121
Mathematical Biosciences

Estimating clonal heterogeneity and interexperiment variability with the bifurcating autoregressive model for cell lineage data

https://doi.org/10.1016/S0025-5564(97)00006-0Get rights and content

Abstract

We utilize an extension of the variance-components models for cell lineage data in Huggins and Staudte [1] (R. M. Huggins and R. G. Staudte, Variance components models for dependent cell populations. J. Am. Stat. Assoc. 89:19–29 (1994)) to analyze NIH3T3 cells grown in two different media. This modeling approach has the advantage of a simple built-in correlation structure between familial members and allows for estimating experimental effects, rather than treating them as random effects. In addition, this methodology gives robust estimates of model parameters together with standard errors required for statistical inference. The importance of clonal heterogeneity and interexperiment variability in modeling eukaryotic cell cycles was previously pointed out by Kuczek and Axelrod [2] (T. Kuczek and D. E. Axelrod, The importance of clonal heterogeneity and interexperimental variability in modeling the eukaryotic cell cycle. Math. Biosci. 79:87–96 (1986)). This analysis confirms significantly positive sister-sister correlation when cells are grown in rich or poor medium and negative mother-daughter correlation when cells are grown in poor medium. However, for cells grown in rich medium, Kuczek and Axelrod's analysis gives negative mother-daughter correlations, whereas this analysis gives significant positive mother-daughter correlations.

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This research was supported by a grant from the Australian Research Council in 1994.

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