Confining TGFbeta to the extracellular matrix (ECM) such that it is separated from other components of the signaling pathway, including its cell surface receptor. TGFbeta is secreted as part of a latent complex that is targeted to the extracellular matrix through latent-TGFbeta-binding protein (LTBP)-mediated association with matrix proteins.
negative regulation of transforming growth factor beta receptor signaling pathway by extracellular matrix sequestering of TGFbeta