Role of PI3K/Akt signaling pathway in cardiac fibrosis

Area of Science:

• Cardiovascular Biology
• Molecular Cardiology
• Pathophysiology

Background:

• Heart failure (HF) is a global health crisis, with cardiac fibrosis significantly contributing to its progression.
• Cardiac fibrosis is characterized by extracellular matrix (ECM) deposition, altering cardiac structure and function.
• It is a common pathological feature in advanced cardiovascular diseases like ischemic heart disease and hypertension.

Purpose of the Study:

• To review the role of the phosphoinositol-3 kinase (PI3K)/Akt signaling pathway in cardiac fibrosis.
• To elucidate the molecular mechanisms by which PI3K/Akt influences fibrotic processes.
• To provide insights for future research and potential therapeutic strategies targeting cardiac fibrosis.

Main Methods:

• Literature review focusing on studies investigating the PI3K/Akt pathway in cardiac fibrosis.
• Analysis of molecular mechanisms involving key regulators downstream of PI3K/Akt.
• Synthesis of current understanding of PI3K/Akt's involvement in fibrotic responses.

Main Results:

• The PI3K/Akt pathway is intricately involved in regulating cardiac fibrosis.
• This pathway influences cell survival, apoptosis, growth, and gene transcription related to fibrosis.
• Key downstream molecules like mTOR, GSK-3, FoxO1/3, and NOS are modulated by PI3K/Akt.

Conclusions:

• The PI3K/Akt signaling pathway is a critical regulator of cardiac fibrosis.
• Understanding this pathway is vital for developing novel treatments for cardiac fibrosis and heart failure.
• Targeting PI3K/Akt may offer a promising therapeutic avenue for mitigating cardiac fibrotic responses.