Spatiotemporal analysis of Crohn’s disease reveals PECAM2 signaling at the basis of the inflammation-to-fibrosis transition - Summary - MDSpire

Spatiotemporal analysis of Crohn’s disease reveals PECAM2 signaling at the basis of the inflammation-to-fibrosis transition

  • By

  • Luca Massimino

  • Tommaso Lorenzo Parigi

  • Matteo Riva

  • Sabrina Nicolò

  • Carmela Errico

  • Salvatore Spanò

  • Sara Mino

  • Mattia Bugatti

  • Alice Frontali

  • Federico Scarfò

  • Andrea Vignali

  • Andrea Municchi

  • Vincenzo Villanacci

  • Luca Albarello

  • Maurilio Ponzoni

  • Virginia Solitano

  • Alberto Malesci

  • Vipul Jairath

  • Laurent Peyrin-Biroulet

  • Pierpaolo Sileri

  • Silvio Danese

  • Federica Ungaro

  • July 18, 2025

  • 0 min

Share

Objective:

To unravel the pathogenesis of Crohn's disease (CD) and identify mechanisms underlying the transition from inflammation to fibrosis, which is crucial for developing effective treatments.

Key Findings:
  • Intestinal cytoarchitecture rearranged during chronic inflammation, indicating structural changes.
  • CD-associated fibrosis evolved within the mesenchymal compartment, driven by PECAM2 signaling, suggesting a pivotal role in disease progression.
  • ApoA signaling, particularly the APOA1–ABCA interaction, is crucial for maintaining epithelial and stromal homeostasis, with implications for treatment.
  • Inhibition of CD38 signaling reduced colitis symptoms and colon thickening in the experimental model, supporting its therapeutic potential.
Interpretation:

PECAM2 signaling is a key factor in the transition from inflammation to fibrosis in Crohn's disease, suggesting it as a potential therapeutic target that could be explored in future treatments.

Limitations:
  • Study based on surgical specimens, which may not fully represent the disease's progression in all patients, potentially limiting generalizability.
  • Findings from mouse models may not completely translate to human disease, necessitating further validation in clinical settings.
Conclusion:

Blockade of PECAM2 signaling could reduce the development of strictures in Crohn's disease patients, offering a new treatment target that warrants further investigation.

Original Source(s)

Spatiotemporal analysis of Crohn’s disease reveals PECAM2 signaling at the basis of the inflammation-to-fibrosis transition

  • by Luca Massimino, Tommaso Lorenzo Parigi, Matteo Riva, Sabrina Nicolò, Carmela Errico, Salvatore Spanò, Sara Mino, Mattia Bugatti, Alice Frontali, Federico Scarfò, Andrea Vignali, Andrea Municchi, Vincenzo Villanacci, Luca Albarello, Maurilio Ponzoni, Virginia Solitano, Alberto Malesci, Vipul Jairath, Laurent Peyrin-Biroulet, Pierpaolo Sileri, Silvio Danese, Federica Ungaro

  • July 18, 2025

Related Content

Evaluation of 5-Aminosalicylic Acid Utilization in Crohn’s Disease Management: Insights from a Nationwide Survey of Inflammatory Bowel Disease Specialists

Distinct phenotype of primary sclerosing cholangitis-associated inflammatory bowel disease

Urologic malignancy risk with chronic tumor necrosis factor-alpha inhibitor (TNF-I) exposure: a multicenter, retrospective cohort study