What question did this study set out to answer?

To identify the signaling pathways that halt type II alveolar epithelial cell (AEC2) proliferation and trigger transdifferentiation into AEC1s during lung regeneration.

March 26, 2019JCI InsightOpen Access

Single-cell RNA sequencing identifies TGF-β as a key regenerative cue following LPS-induced lung injury

View Full Paper

Ask AI

Bookmark

Authors

KRKent RiemondyUniversity of Colorado Anschutz Medical Campus NJNicole L. JansingUniversity of Michigan PJPeng JiangChinese Academy of Medical Sciences & Peking Union Medical College

Discussion

Member takes

Implication

Preclinical study demonstrates biphasic TGF-beta signaling controls alveolar regeneration in injured mice, indicating timely inactivation is required for repair.

Key Points

To identify the signaling pathways that halt type II alveolar epithelial cell (AEC2) proliferation and trigger transdifferentiation into AEC1s during lung regeneration.
Conducted single-cell RNA sequencing on AEC2s during lung regeneration in an intratracheal lipopolysaccharide-induced mouse injury model.
Performed unsupervised clustering and gene expression analysis on regenerating AEC2 subpopulations.
Tested the functional role of TGF-β signaling on proliferation arrest and transdifferentiation in cultured AEC2 assays.
Single-cell transcriptomics revealed distinct transitional AEC2 subpopulations: proliferating, cell cycle arrest, and transdifferentiating cells.
TGF-β pathway genes were highly upregulated in cell cycle-arrested AEC2s but relatively downregulated in transdifferentiating AEC2s.
In cultured AEC2s, TGF-β signaling was required for cell cycle arrest but actively impeded transdifferentiation into AEC1s.

Cite This Study

Riemondy et al. (2019) studied this question.

synapsesocial.com/papers/69da9ad1a6045d71bfa3d2c4 https://doi.org/10.1172/jci.insight.123637

View Full Paper

Ask AI

Bookmark

Implication

Preclinical study demonstrates biphasic TGF-beta signaling controls alveolar regeneration in injured mice, indicating timely inactivation is required for repair.

Single-cell RNA sequencing identifies TGF-β as a key regenerative cue following LPS-induced lung injury

Discussion

Member takes

Implication

Key Points

Cite This Study

Single-cell RNA sequencing identifies TGF-β as a key regenerative cue following LPS-induced lung injury

Discussion

Member takes

Implication

Key Points

Cite This Study

Also Consider

Also Consider