Metabolic changes in schizophrenia and human brain evolution

Khaitovich, Philipp
Lockstone, Helen E.
Wayland, Matthew T.
Tsang, Tsz M.
Jayatilaka, Samantha D.
Guo, Arfu J.
Zhou, Jie
Somel, Mehmet
Harris, Laura W.
Holmes, Elaine
Paeaebo, Svante
Bahn, Sabine
Background: Despite decades of research, the molecular changes responsible for the evolution of human cognitive abilities remain unknown. Comparative evolutionary studies provide detailed information about DNA sequence and mRNA expression differences between humans and other primates but, in the absence of other information, it has proved very difficult to identify molecular pathways relevant to human cognition.


Transcriptomic insights into human brain evolution: acceleration, neutrality, heterochrony
Somel, Mehmet; Liu, Xiling (Elsevier BV, 2014-12-01)
Primate brain transcriptome comparisons within the last 12 years have yielded interesting but contradictory observations on how the transcriptome evolves, and its adaptive role in human cognitive evolution. Since the human-chimpanzee common ancestor, the human prefrontal cortex transcriptome seems to have evolved more than that of the chimpanzee. But at the same time, most expression differences among species, especially those observed in adults, appear as consequences of neutral evolution at cis-regulatory...
Meta analysis of alzheimer’s disease at the gene expression level
İzgi, Hamit; Somel, Mehmet; Department of Biology (2017)
In this study, publicly available microarray gene expression datasets are used to investigate common gene expression changes in different postmortem brain regions in Alzheimer’s Disease (AD) patients compared to control subjects, and to find possible functional associations related to these changes. The hypothesis is that pathogenesis of the disease converges into common patterns of dysregulation/alteration or dysfunction in molecular pathways across different brain regions in AD. In total, I studied 13 dat...
MicroRNA-Driven Developmental Remodeling in the Brain Distinguishes Humans from Other Primates
Somel, Mehmet; Tang, Lin; Yan, Zheng; Hu, Haiyang; Guo, Song; Jiang, Xi; Zhang, Xiaoyu; Xu, Guohua; Xie, Gangcai; Li, Na; Hu, Yuhui; Chen, Wei; Paeaebo, Svante; Khaitovich, Philipp (2011-12-01)
While multiple studies have reported the accelerated evolution of brain gene expression in the human lineage, the mechanisms underlying such changes are unknown. Here, we address this issue from a developmental perspective, by analyzing mRNA and microRNA (miRNA) expression in two brain regions within macaques, chimpanzees, and humans throughout their lifespan. We find that constitutive gene expression divergence (species differences independent of age) is comparable between humans and chimpanzees. However, ...
Mitochondrial DNA Diversity of Modern, Ancient and Wild Sheep (Ovis gmelinii anatolica) from Turkey: New Insights on the Evolutionary History of Sheep
Demirci, Sevgin; Bastanlar, Evren Koban; Dagtas, Nihan Dilsad; Pişkin, Evangelia; ENGİN, ATİLLA; Ozer, Fusun; Yuncu, Eren; Dogan, Sukru Anil; TOGAN, İNCİ ZEHRA (2013-12-11)
In the present study, to contribute to the understanding of the evolutionary history of sheep, the mitochondrial (mt) DNA polymorphisms occurring in modern Turkish native domestic (n = 628), modern wild (Ovis gmelinii anatolica) (n = 30) and ancient domestic sheep from Oylum Hoyuk in Kilis (n = 33) were examined comparatively with the accumulated data in the literature. The lengths (75 bp/76 bp) of the second and subsequent repeat units of the mtDNA control region (CR) sequences differentiated the five hapl...
Variable Selection and Classification for Longitudinal Binary Data Through Three-Step Sparse Boosting
Emer, Deniz Esin; İlk Dağ, Özlem; Department of Statistics (2022-6)
With the rapid evolution of technology, it is now possible to obtain the gene expression levels of thousands of genes in a single experiment. In these experiments, the sample size is relatively small but the number of covariates under consideration is extremely large, whereas only a small number of expressions may be related to the outcome of interest. Hence, the selection of causal features is much-needed along with the model estimation. In this thesis, we propose a three-step sparse boosting model for det...
Citation Formats
P. Khaitovich et al., “Metabolic changes in schizophrenia and human brain evolution,” GENOME BIOLOGY, pp. 0–0, 2008, Accessed: 00, 2020. [Online]. Available: