The Hyaluronan Receptor for Endocytosis (HARE) Activates NF-κB-mediated Gene Expression in Response to 40–400-kDa, but Not Smaller or Larger, Hyaluronans

Abstract

Background: HARE mediates systemic clearance of hyaluronan (HA), which turns over continuously in tissues. Results: HARE uptake of 40–400-kDa, but not larger or smaller, HA stimulated NF-κB activation. Conclusion: HA-HARE signal complexes activate NF-κB and gene transcription only with optimally sized HA. Significance: HARE responsiveness to a narrow size range ofHAdegradation products may be a sensing system to detect tissue ECM stress

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