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Addressing the genetic/nongenetic duality in cancer with systems biology

https://doi.org/10.1016/j.trecan.2022.12.004

Kulkarni, Prakash ; Wiley, H. Steven ; Levine, Herbert ; Sauro, Herbert ; Anderson, Alexander ; Wong, Stephen T.C. ; Meyer, Aaron S. ; Iyengar, Puneeth ; Corlette, Kevin ; Swanson, Kristin ; et al ( March 2023 , Trends in Cancer)

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Transcriptomic and proteomic signatures of stemness and differentiation in the colon crypt

https://doi.org/10.1038/s42003-020-01181-z

Habowski, Amber N. ; Flesher, Jessica L. ; Bates, Jennifer M. ; Tsai, Chia-Feng ; Martin, Kendall ; Zhao, Rui ; Ganesan, Anand K. ; Edwards, Robert A. ; Shi, Tujin ; Wiley, H. Steven ; et al ( August 2020 , Communications Biology)

Abstract
Intestinal stem cells are non-quiescent, dividing epithelial cells that rapidly differentiate into progenitor cells of the absorptive and secretory cell lineages. The kinetics of this process is rapid such that the epithelium is replaced weekly. To determine how the transcriptome and proteome keep pace with rapid differentiation, we developed a new cell sorting method to purify mouse colon epithelial cells. Here we show that alternative mRNA splicing and polyadenylation dominate changes in the transcriptome as stem cells differentiate into progenitors. In contrast, as progenitors differentiate into mature cell types, changes in mRNA levels dominate the transcriptome. RNA processing targets regulators of cell cycle, RNA, cell adhesion, SUMOylation, and Wnt and Notch signaling. Additionally, global proteome profiling detected >2,800 proteins and revealed RNA:protein patterns of abundance and correlation. Paired together, these data highlight new potentials for autocrine and feedback regulation and provide new insights into cell state transitions in the crypt.

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