In vivo fluorescent labeling and tracking of extracellular matrix

Area of Science:

• Biochemistry
• Cell Biology
• Regenerative Medicine

Background:

• Connective tissues and their extracellular matrix (ECM) are crucial for organ structure and function.
• Understanding ECM dynamics is vital for organ development, repair, and regeneration, but current methods are limited.

Purpose of the Study:

• To develop and present a novel in vivo method for fate mapping the organ extracellular matrix (ECM).
• To enable robust labeling and visualization of ECM proteins for studying connective tissue dynamics.

Main Methods:

• Utilizes a chemical crosslinking reaction between amine groups and N-hydroxysuccinimide esters for ECM protein labeling.
• A rapid labeling protocol (5-10 minutes) suitable for entry-level scientists.

Main Results:

• Successfully demonstrates a robust method for in vivo ECM tagging with fluorophores.
• Enables visualization of spatial modifications within the ECM.

Conclusions:

• The developed N-hydroxysuccinimide ester-based method provides a versatile tool for studying ECM dynamics across various biological processes.
• Complements existing cellular fate-mapping techniques and is applicable to cross-species comparative studies.