CaMK II in Cardiovascular Diseases, Especially CaMK II-δ: Friends or Enemies

Yu-Qing Tan1, Wang Zhang2, Zi-Cong Xie1

  • 1Department of Cardiology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, 100053, People's Republic of China.

Insights

Calcium/calmodulin-dependent kinase II (CaMK II) is crucial in cardiovascular diseases (CVDs). Targeting CaMK II isoforms may offer new therapeutic strategies for complex heart conditions.

Area of Science:

  • Biochemistry
  • Cardiology
  • Molecular Biology

Background:

  • Cardiovascular diseases (CVDs) present a significant societal and economic challenge, often affecting younger populations.
  • The underlying physiological and pathological mechanisms of CVDs are intricate and not fully understood.
  • Calcium/calmodulin-dependent kinase II (CaMK II) is a key protein kinase implicated in various biological functions and pathological processes.

Purpose of the Study:

  • To analyze the structural characteristics and distribution of CaMK II.
  • To elucidate the mechanism of action of CaMK II in cardiovascular health and disease.
  • To explore the multifaceted relationship between CaMK II and various CVDs.

Main Methods:

  • Literature review and analysis of existing research on CaMK II.
  • Examination of CaMK II's role in ion channel function.
  • Investigation of CaMK II's involvement in ischemia-reperfusion injury, arrhythmias, myocardial hypertrophy, cardiotoxicity, hypertension, and dilated cardiomyopathy.

Main Results:

  • CaMK II plays a central role in the pathogenesis of numerous cardiovascular conditions.
  • The protein kinase influences diverse cardiovascular processes, including electrical signaling and structural remodeling.
  • Different isoforms of CaMK II exhibit distinct regulatory mechanisms.

Conclusions:

  • CaMK II is a critical mediator in the development and progression of cardiovascular diseases.
  • Understanding CaMK II's specific roles and isoform regulation is essential for therapeutic development.
  • Future research should focus on targeted inhibitors and novel compounds for CaMK II to establish new treatment directions for CVDs.

Related Concept Videos

Calmodulin-dependent Signaling01:16

Calmodulin-dependent Signaling

Calmodulin (CaM) is a calcium-binding protein in eukaryotes that controls various calcium-regulated cellular processes. It has four calcium-binding sites that bind calcium to form the calcium-calmodulin ( Ca2+-CaM) complex. GPCR stimulation increases the calcium levels in the cells that bind to CaM and induces a conformational change.
The Ca2+-CaM complex does not have enzymatic activity by itself. Instead, the complex binds downstream target proteins, including membrane proteins or enzymes,...
5.1K
Antianginal Drugs: Calcium Channel Blockers and Ranolazine01:25

Antianginal Drugs: Calcium Channel Blockers and Ranolazine

Angina pectoris, a primary symptom of ischemic heart disease, requires careful pharmacological interventions. In this context, calcium channel blockers (CCBs) and ranolazine have emerged as crucial pharmacotherapeutic agents, providing deep insights into the complexities of angina management.
CCBs, a diverse class that includes dihydropyridines (nifedipine) and diphenylalkylamines (verapamil and diltiazem), exert their effect by blocking calcium channels in cardiac and smooth muscle cells. This...
474
Antihypertensive Drugs: Action of Calcium Channel Blockers01:18

Antihypertensive Drugs: Action of Calcium Channel Blockers

Calcium ions are essential to contract smooth muscle cells in blood vessels. They enter these cells through voltage-dependent calcium channels, specifically L-type calcium channels in the cell membrane. These L-type calcium channels are integral to the excitation-contraction coupling process in smooth muscle. When a stimulus is received by smooth muscle cells, their membrane depolarizes. This alteration in membrane potential instigates the opening of L-type calcium channels. As a result,...
481
cAMP-dependent Protein Kinase Pathways01:25

cAMP-dependent Protein Kinase Pathways

Cyclic Adenosine Monophosphate (cAMP) is an essential second messenger that activates protein kinase A (PKA) and regulates various biological processes. A single epinephrine molecule binds to GPCR and activates several heterotrimeric G proteins, each stimulating multiple adenylyl cyclase, amplifying the signal, and synthesizing large numbers of cAMP molecules. Small changes in cAMP concentration affect PKA activity. The binding of four cAMP molecules induces a conformational change in PKA,...
6.2K
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:
2.4K
Immunoglobulin-like Cell Adhesion Molecules01:31

Immunoglobulin-like Cell Adhesion Molecules

Immunoglobulin-like cell adhesion molecules or Ig-CAMs are a versatile group of cell surface glycoproteins belonging to the immunoglobulin protein superfamily. Ig-CAMs possess the characteristic immunoglobulin protein domains and other domains such as the fibronectin type III domain. The Ig domains are glycosylated to varying degrees in different Ig-CAMs.
Ig-CAMs exhibit either homophilic binding (to other Ig-CAMs) or heterophilic binding (to other ligands such as integrins). While most Ig-CAMs...
3.2K