Gene expression analysis reveals the tipping points during infant brain development for human and chimpanzee

BMC Genomics
Hui TangLuonan Chen

Abstract

Postpartum developmental delay has been proposed as an important phenotype of human evolution which contributes to many human-specific features including the increase in brain size and the advanced human-specific cognitive traits. However, the biological processes and molecular functions underlying early brain development still remain poorly understood, especially in human and primates. In this paper, we comparatively and extensively studied dorsolarteral prefrontal cortex expression data in human and chimpanzee to investigate the critical processes or biological events during early brain development at a molecular level. By using the dynamic network biomarker (DNB) model, we found that there are tipping points around 3 months and 1 month, which are crucial periods in infant human and chimpanzee brain development, respectively. In particular, we shown that the human postnatal development and the corresponding expression changes are delayed 3 times relative to chimpanzee, and we also revealed that many common biological processes are highly involved in those critical periods for both human and chimpanzee, e.g., physiological system development functions, nervous system development, organismal development and tissue morphology. T...Continue Reading

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Datasets Mentioned

BETA
GSE11512

Methods Mentioned

BETA
PCA

Software Mentioned

Ingenuity Pathway Analysis )
MATLAB Library
clustergram
Matlab package of DNB
IPA

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