In vivo imaging of extracellular matrix remodeling by tumor-associated fibroblasts.

Perentes, Jean Y; McKee, Trevor D; Ley, Carsten D; Mathiew, Hannah; Dawson, Michelle; Padera, Timothy P; Munn, Lance L; Jain, Rakesh K et al. · Nat Methods · 2009

basic_science · Level V

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Abstract

Here we integrated multiphoton laser scanning microscopy and the registration of second harmonic generation images of collagen fibers to overcome difficulties in tracking stromal cell-matrix interactions for several days in live mice. We show that the matrix-modifying hormone relaxin increased tumor-associated fibroblast (TAF) interaction with collagen fibers by stimulating beta1-integrin activity, which is necessary for fiber remodeling by matrix metalloproteinases.

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