Storage Stability
Mechanism of Action
FGF23 Co-receptor
Membrane Klotho forms a complex with FGFR1 to serve as the obligate co-receptor for FGF23, a bone-derived hormone that regulates phosphate and vitamin D metabolism. Without Klotho, FGF23 cannot signal effectively, leading to hyperphosphatemia and vascular calcification.Wnt Signaling Suppression
Soluble Klotho suppresses canonical Wnt signaling, which is pro-aging in many tissues. Excess Wnt drives cellular senescence, fibrosis, and cancer; Klotho's Wnt suppression is a key mechanism of its anti-aging, anti-fibrotic effects.Oxidative Stress Reduction
Klotho activates FOXO transcription factors and suppresses IGF-1/PI3K/AKT signaling, increasing resistance to oxidative stress and extending cellular lifespan.Ion Channel Regulation
Klotho regulates TRPV5 calcium channels (kidney calcium reabsorption) and ROMK potassium channels, maintaining mineral homeostasis.Research Summary
Lifespan Extension in Mice
Kuro-o et al. showed transgenic mice overexpressing Klotho live 20–30% longer than controls, with delayed age-related pathologies including atherosclerosis, sarcopenia, and skin atrophy.Cognitive Function
Elevated circulating Klotho is associated with better cognitive performance in humans across multiple population studies. A single IV dose of Klotho protein acutely improved cognitive performance in aged mice and young mice with Alzheimer's-like pathology.Kidney Protection
Klotho is dramatically depleted in chronic kidney disease (CKD). Animal models show Klotho supplementation reduces renal fibrosis, suppresses TGF-β signaling, and slows CKD progression.Human Epidemiology
Higher serum Klotho levels (measured by ELISA) correlate with lower all-cause mortality, reduced cardiovascular events, and better renal function across multiple large cohort studies.Calculate your Klotho dose Vial strength, BAC water, exact syringe draw in IU. Free, no signup. Open Calc →
Research Protocols
Note: Recombinant Klotho protein is expensive and requires cold chain. No established human dosing protocol exists.
Animal Models
IV or IP injection of recombinant soluble Klotho protein (0.01–0.1 mg/kg) in mouse models. Some protocols use adeno-associated virus (AAV) vectors for sustained Klotho expression.Indirect Approaches
Exercise, caloric restriction, magnesium supplementation, and rapamycin have been shown to raise endogenous Klotho levels, more practical approaches than recombinant protein administration.Storage & Handling
Store recombinant Klotho protein at -80°C for long-term; -20°C for short-term. At 2–8°C stable for days only. Avoid freeze-thaw cycles, aliquot upon receipt. Highly sensitive protein; use carrier proteins (BSA) to prevent adsorption to tubes.
References
- [1]Kuro-o M, et al. "Mutation of the mouse klotho gene leads to a syndrome resembling ageing." Nature, 1997.
- [2]Dubal DB, et al. "Life extension factor klotho enhances cognition." Cell Rep, 2014.
- [3]Hu MC, et al. "Klotho deficiency causes vascular calcification in CKD." J Am Soc Nephrol, 2011.
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