Extracellular proteases as targets for drug development

Mare Cudic1, Gregg B Fields

  • 1Department of Biochemistry, University of Texas Health Science Center, 7703 Floyd Curl Drive, San Antonio, TX 78229, USA.

Insights

Extracellular proteases (ECPs) are key drug targets for diseases like cancer and inflammation. New therapies inhibiting ECPs or using them for targeted drug delivery are emerging.

Area of Science:

  • Biochemistry
  • Pharmacology
  • Drug Discovery

Background:

  • Proteases are crucial targets in drug discovery.
  • Extracellular proteases (ECPs) are differentially expressed in various pathophysiological conditions, including cancer, cardiovascular, inflammatory, pulmonary, and periodontal diseases.
  • This differential expression offers opportunities for targeted therapies and diagnostics.

Purpose of the Study:

  • To review recent advancements in targeted drug development for extracellular proteases.
  • To highlight the potential of ECP inhibitors and targeted delivery systems.

Main Methods:

  • Review of current literature on extracellular proteases.
  • Focus on metalloproteases, serine proteases, and cysteine proteases.
  • Discussion of recent studies in targeted drug development.

Main Results:

  • Numerous ECP inhibitors are in clinical trials.
  • Significant growth in protease inhibition therapies is anticipated.
  • Strategies include direct activity blockade and targeted delivery of agents.

Conclusions:

  • Extracellular proteases represent a promising area for therapeutic intervention.
  • Targeted drug development for ECPs is advancing rapidly.
  • Future therapies will likely leverage ECP inhibition and targeted delivery for various diseases.

Related Concept Videos

Transducer Mechanism: Enzyme-Linked Receptors01:27

Transducer Mechanism: Enzyme-Linked Receptors

Enzyme-linked receptors are cell-surface receptors acting as an enzyme or associating with an enzyme intracellularly. They make excellent drug targets. Drugs can bind to the extracellular ligand-binding domain or directly affect their enzymatic domain and alter their activity.
Major types that are helpful drug targets include:
Targets for Drug Action: Overview01:26

Targets for Drug Action: Overview

Drugs target macromolecules to modify ongoing cellular processes. Primary drug targets include receptors, ion channels, transporters, and enzymes.
Receptors are either membrane-spanning or intracellular proteins, which upon binding a ligand, get activated and transmit the signal downstream to elicit a response. Drugs bind receptors, either mimicking the action of endogenous ligands or blocking the receptor activity to bring about a modified response. Nearly 35% of approved drugs target the G...
Role of Matrix Metalloproteases in Degradation of ECM01:23

Role of Matrix Metalloproteases in Degradation of ECM

Matrix metalloproteases (MMPs) are enzymes involved in the hydrolysis of proteins and glycoproteins of the extracellular matrix. MMPs are essential for the migration and proliferation of cells through the dense matrix network, throughout embryonic development, and throughout morphogenesis. The first MMP activity discovered was a collagenase in a tadpole's tail undergoing metamorphosis. The active collagen deposition and modifications lead to the morphogenesis of tadpoles into the adult body.
A...
The Proteasome02:18

The Proteasome

Eukaryotic cells can degrade proteins through several pathways. One of the most important amongst these is the ubiquitin-proteasome pathway. It helps the cell eliminate the misfolded, damaged, or unwarranted cytoplasmic proteins in a highly specific manner.
In this pathway, the target proteins are first tagged with small proteins called ubiquitin. A series of enzymes carry out the ubiquitination of the target proteins - E1 (ubiquitin-activating enzyme), E2 (ubiquitin-conjugating enzyme), and E3...
The Proteasome01:13

The Proteasome

Eukaryotic cells can degrade proteins through several pathways. One of the most important among these is the ubiquitin-proteasome pathway. It helps the cell eliminate the misfolded, damaged, or unwarranted cytoplasmic proteins in a highly specific manner.
In this pathway, the target proteins are first tagged with small proteins called ubiquitin. This involves participation of a series of enzymes including— E1 (ubiquitin-activating enzyme), E2 (ubiquitin-conjugating enzyme), and E3 (ubiquitin...
Caspases01:24

Caspases

Caspase, a family of cysteine proteases, serve as effectors in apoptosis. The ced3 gene in C.elegans was first identified to be involved in apoptosis. This gene encodes the ced-3 caspase that is similar to the interleukin-1-beta converting enzyme or ICE in mammals. In addition to apoptosis, caspases also function in the inflammatory response. Inflammatory caspases are essential in activating pro-inflammatory cytokines that recruit immune cells and block the replication of pathogens inside cells.