CD44 - a new cardiovascular drug target or merely an innocent bystander?

Alexandra Krettek1, Sara Sjöberg

  • 1Nordic School of Public Health, Box 12133, 402 42 Gothenburg, Sweden. alexandra.krettek@nhv.se

Insights

Cluster of differentiation 44 (CD44) is an adhesion molecule implicated in cancer and cardiovascular diseases like atherosclerosis. Its role in cardiovascular drug therapy warrants further investigation to determine if it

Area of Science:

  • Cardiovascular Biology
  • Molecular Cell Biology
  • Immunology

Background:

  • Cluster of differentiation 44 (CD44) is a cell surface adhesion molecule and hyaluronate receptor.
  • It interacts with extracellular matrix components and is expressed on most vertebrate cells.
  • CD44 plays roles in cell adhesion, migration, leukocyte homing, and apoptosis.

Purpose of the Study:

  • To review the role of CD44 in cardiovascular diseases, including atherosclerosis and abdominal aortic aneurysms.
  • To evaluate CD44 as a potential cardiovascular drug target.
  • To synthesize findings from human and animal studies on CD44's involvement in cardiovascular pathology.

Main Methods:

  • Review of existing human and animal studies.
  • Analysis of CD44's function in cancer and its implications for cardiovascular disease.
  • Examination of CD44's role in inflammatory processes relevant to cardiovascular conditions.

Main Results:

  • CD44 is implicated in inflammatory diseases such as atherosclerosis and abdominal aortic aneurysms.
  • Animal studies show variable roles for CD44 in atherogenesis depending on the experimental model.
  • CD44's functions extend beyond adhesion to include leukocyte recruitment and matrix remodeling.

Conclusions:

  • CD44 is a molecule of interest for cardiovascular drug therapy.
  • Further research is needed to clarify CD44's precise role in cardiovascular diseases.
  • Determining whether CD44 is a therapeutic target or an innocent bystander in cardiovascular pathology is crucial.

Related Concept Videos

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...
Pharmacogenomics: Identification of New Drug Targets01:29

Pharmacogenomics: Identification of New Drug Targets

Advances in genomics have profoundly influenced drug discovery by increasing both the speed and accuracy of pharmaceutical development. Pharmacogenomics, which examines how genetic variation influences drug response, facilitates the identification of novel therapeutic targets and enables patient stratification for personalized treatment. These strategies contribute to improved drug efficacy, minimized adverse effects, and more efficient clinical trial design.Mapping genetic differences...
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:
Antiplatelet Drugs: Prostaglandin Synthesis, P2Y12 and Glycoprotein IIb/IIIa Inhibitors01:20

Antiplatelet Drugs: Prostaglandin Synthesis, P2Y12 and Glycoprotein IIb/IIIa Inhibitors

Antiplatelet drugs emerge as frontline defenders against the insidious threat of thromboembolic diseases, where abnormal clots obstruct vital blood vessels. These drugs stand as bulwarks, inhibiting platelet aggregation and clot formation, thereby mitigating the risk of life-threatening conditions like myocardial infarction, coronary artery disease, and thrombotic strokes.
Prostaglandin synthesis inhibitors, exemplified by the widely known aspirin, wield their power by irreversibly acetylating...
Drug Binding to Blood Components01:30

Drug Binding to Blood Components

When drugs enter systemic circulation, they interact with various components of the blood, including proteins such as human serum albumin (HSA), α1-acid glycoprotein (AAG), lipoproteins, globulins, and red blood cells (RBCs).
HSA is the most abundant plasma protein and is vital in drug binding. It contains distinct drug-binding sites, with different drugs exhibiting affinity for specific sites. There are three main drug-binding domains for HSA: sites I, II, and III. These domains are further...
Receptor-mediated Endocytosis01:38

Receptor-mediated Endocytosis

Overview