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Published on: January 25, 2018
Klotho is a substrate for alpha-, beta- and gamma-secretase
Laura Bloch1, Olga Sineshchekova, Daniela Reichenbach
1Leibniz Institut für Altersforschung-Fritz Lipmann Institut, Beutenbergstr. 11, 07745 Jena, Germany.
FEBS Letters
|September 10, 2009
Summary
Klotho, an anti-aging protein, is processed by secretase enzymes. Therapeutic targeting of these enzymes requires careful consideration of Klotho
Area of Science:
- Biochemistry
- Molecular Biology
- Aging Research
Background:
- Klotho is a key anti-aging protein.
- It exists in full-length membrane-bound and secreted forms with distinct functions.
- Understanding Klotho processing is crucial for aging research.
Purpose of the Study:
- To investigate the proteolytic processing of Klotho.
- To identify the specific secretase enzymes involved in Klotho shedding and intramembrane proteolysis.
- To evaluate the implications for therapeutic strategies targeting secretases.
Main Methods:
- Overexpression and knock-down of Klotho.
- Analysis of embryonic fibroblasts from Klotho knock-out mice.
- Identification of secretase enzymes (ADAM10, ADAM17, BACE1, gamma-secretase).
Main Results:
- Klotho is shed by alpha-secretases (ADAM10, ADAM17) and beta-secretase (BACE1).
- The remaining membrane-bound fragment undergoes intramembrane proteolysis by gamma-secretase.
- These findings elucidate the molecular mechanisms of Klotho processing.
Conclusions:
- Klotho processing involves sequential action of multiple secretases.
- Therapeutic interventions targeting secretases must consider potential effects on Klotho.
- Further research is needed to fully understand Klotho's role in aging and disease.
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