ArticleLife science alliance2022
Visualized procollagen Iα1 demonstrates the intracellular processing of propeptides.
Article in Life science alliance, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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10 citing papers in PubMed, 11 citations in OpenAlex.
- Prenatal and Postnatal Determinants of Outcome in Neonates with Omphalocele: A 25-Year Single-Center Cohort Study.Journal of clinical medicine · 2026Article
- Senescence in Normal Human Dermal Fibroblasts Induces Heterogeneous Fibril Orientation of Type I Collagen Through Downregulation of BMP-1.Genes to cells : devoted to molecular & cellular mechanisms · 2026Article
- FAM134B controls collagen I dynamics in hepatic stellate cell-driven fibrosis.American journal of physiology. Gastrointestinal and liver physiology · 2026Article
- A facile method for fluorescent visualization of newly synthesized fibrous collagen by capturing the allysine aldehyde groups serving as cross-link precursors.bioRxiv : the preprint server for biology · 2025Article
- New imaging tools reveal live cellular collagen secretion, fibril dynamics and network organisation.Scientific reports · 2025Article
- Non-genetic diagnostic investigations in monogenic Ehlers-Danlos syndromes.Medizinische Genetik : Mitteilungsblatt des Berufsverbandes Medizinische Genetik e.V · 2024Article
- Stem-Cell-Regenerative and Protective Effects of Squid (Marine drugs · 2024Article
- The proprotein convertase BLI-4 promotes collagen secretion prior to assembly of the Caenorhabditis elegans cuticle.PLoS genetics · 2023Article
- The proprotein convertase BLI-4 promotes collagen secretion during assembly of thebioRxiv : the preprint server for biology · 2023Article
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Authors and funding
10 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The processing of type I procollagen is essential for fibril formation; however, the steps involved remain controversial. We constructed a live cell imaging system by inserting fluorescent proteins into type I pre-procollagen α1. Based on live imaging and immunostaining, the C-propeptide is intracellularly cleaved at the perinuclear region, including the endoplasmic reticulum, and subsequently accumulates at the upside of the cell. The N-propeptide is also intracellularly cleaved, but is transported with the repeating structure domain of collagen into the extracellular region. This system makes it possible to detect relative increases and decreases in collagen secretion in a high-throughput manner by assaying fluorescence in the culture medium, and revealed that the rate-limiting step for collagen secretion occurs after the synthesis of procollagen. In the present study, we identified a defect in procollagen processing in activated hepatic stellate cells, which secrete aberrant collagen fibrils. The results obtained demonstrated the intracellular processing of type I procollagen, and revealed a link between dysfunctional processing and diseases such as hepatic fibrosis.
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