carrier-assisted-one-pot-sample-preparation-for-targeted-proteomics

Carrier-assisted One-pot Sample Preparation for Targeted Proteomics Analysis of Small Numbers of Human Cells

Protein analysis of small numbers of human cells is primarily achieved by targeted proteomics with antibody-based immunoassays, which have inherent ...

Pacific Northwest National Laboratory

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.

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

An amendment to this paper has been published and can be accessed via a link at the top of the paper.

Article	Year
Transcriptomic and proteomic signatures of stemness and differentiation in the colon crypt. Communications biology\| PubMed ID: 32814826	2020
Publisher Correction: Transcriptomic and proteomic signatures of stemness and differentiation in the colon crypt. Communications biology\| PubMed ID: 32884070	2020

Kendall Martin

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