Current understanding of klotho.

Area of Science:

• Gerontology
• Molecular Biology
• Genetics

Background:

• Klotho is identified as a key gene influencing aging processes.
• Genetic variations in klotho are linked to premature aging phenotypes and reduced lifespan.
• Klotho's role in regulating aging is a significant area of current research.

Purpose of the Study:

• To review recent advancements in klotho research.
• To explore the multifaceted functions and signaling pathways of klotho.
• To outline future directions for klotho-related aging studies.

Main Methods:

• Literature review of klotho gene functions and associated pathways.
• Analysis of studies on klotho's impact on aging phenotypes and lifespan in model organisms.
• Examination of klotho's role in regulating FGF23, ion channels, and intracellular signaling.

Main Results:

• Klotho gene mutation leads to premature aging and shortened lifespan.
• Klotho overexpression in mice suppresses aging and extends lifespan.
• Klotho regulates multiple pathways, including FGF23 signaling, ion transport (TRPV5), nitric oxide production, and intracellular cascades (p53/p21, cAMP, PKC, Wnt).

Conclusions:

• Klotho is a crucial regulator of aging, impacting lifespan and age-related phenotypes.
• Understanding klotho's diverse functions and signaling mechanisms is vital for aging research.
• Further investigation into klotho holds promise for developing anti-aging interventions.