Related Experiment Video
Updated: Apr 17, 2026
Bacterial Expression and Purification of Human Matrix Metalloproteinase-3 using Affinity Chromatography
Published on: March 30, 2022
Extracellular regulation of metalloproteinases
Kazuhiro Yamamoto1, Gillian Murphy2, Linda Troeberg1
1Kennedy Institute of Rheumatology, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Roosevelt Drive, Oxford OX37FY, UK.
Abstract:
Matrix metalloproteinases (MMPs) and adamalysin-like metalloproteinase with thrombospondin motifs (ADAMTSs) belong to the metzincin superfamily of metalloproteinases and they play key roles in extracellular matrix catabolism, activation and inactivation of cytokines, chemokines, growth factors, and other proteinases at the cell surface and within the extracellular matrix. Their activities are tightly regulated in a number of ways, such as transcriptional regulation, proteolytic activation and interaction with tissue inhibitors of metalloproteinases (TIMPs). Here, we highlight recent studies that have illustrated novel mechanisms regulating the extracellular activity of these enzymes. These include allosteric activation of metalloproteinases by molecules that bind outside the active site, modulation of location and activity by interaction with cell surface and extracellular matrix molecules, and endocytic clearance from the extracellular milieu by low-density lipoprotein receptor-related protein 1 (LRP1).
Insights
Matrix metalloproteinases (MMPs) and ADAMTSs are key enzymes regulated by novel extracellular mechanisms. Recent studies reveal allosteric activation, cell interactions, and clearance by LRP1, offering new insights into metalloproteinase activity control.
Area of Science:
- Biochemistry
- Molecular Biology
- Cell Biology
Background:
- Matrix metalloproteinases (MMPs) and ADAMTSs are crucial metzincin enzymes involved in extracellular matrix remodeling and signaling.
- Their activity is tightly controlled through transcriptional regulation, proteolytic activation, and inhibition by TIMPs.
Purpose of the Study:
- To highlight recent discoveries in the regulation of extracellular metalloproteinase activity.
- To elucidate novel mechanisms controlling MMP and ADAMTS function.
Main Methods:
- Review of recent scientific literature focusing on metalloproteinase regulation.
- Analysis of studies investigating allosteric activation, cell-matrix interactions, and receptor-mediated clearance.
Main Results:
- Identified novel allosteric activators that bind outside the active site of metalloproteinases.
- Demonstrated that cell surface and extracellular matrix interactions modulate enzyme location and activity.
- Highlighted the role of low-density lipoprotein receptor-related protein 1 (LRP1) in the endocytic clearance of metalloproteinases.
Conclusions:
- Extracellular mechanisms, including allosteric regulation and LRP1-mediated clearance, provide sophisticated control over metalloproteinase activity.
- These findings expand our understanding of how MMPs and ADAMTSs function in physiological and pathological contexts.
Related Concept Videos
01:23Role of Matrix Metalloproteases in Degradation of ECM
01:42The Extracellular Matrix
01:29The Extracellular Matrix
In order to maintain tissue organization, many animal cells are surrounded by structural molecules that make up the extracellular matrix (ECM). Together, the molecules in the ECM maintain the structural integrity of tissue as well as the remarkable specific properties of certain tissues.
Composition of the Extracellular Matrix
The extracellular matrix (ECM) is commonly composed of ground substance, a gel-like fluid, fibrous components, and many structurally and functionally diverse...
01:26Extracellular Matrix
01:13Cell-matrix's Response to Mechanical Forces
Anchoring junctions mechanically attach a cell to the...
01:24Overview of Cell-Matrix Interactions