Klotho was discovered in 1997 by a team of Japanese researchers led by Dr. Makoto Kuro-o at the National Institute of Neuroscience in Tokyo. It is named after one of the three Fates in Greek mythology, Klotho, who is associated with spinning the thread of life.
The discovery stemmed from their study of genetically modified mice that exhibited a range of aging-related symptoms, such as arteriosclerosis, osteoporosis, and skin atrophy. These mice had a mutation in a gene they named "KLOTHO," after the Greek goddess who spins the thread of life.
The researchers found that the Klotho protein encoded by this gene acts as a hormone that can extend lifespan when overexpressed. Conversely, a deficiency in Klotho leads to accelerated aging and a shortened lifespan. The discovery of Klotho opened new avenues in aging research, highlighting the protein's role in regulating aging processes and its potential implications for age-related diseases.
After the discovery of Klotho in 1997, the subsequent research and developments unfolded in several significant ways:
Researchers delved into understanding the structure and function of the Klotho protein. They discovered that Klotho functions as a co-receptor for fibroblast growth factor 23 (FGF23), a hormone involved in phosphate and vitamin D metabolism. This established Klotho's critical role in regulating mineral homeostasis.
Studies confirmed that Klotho levels decline with age, and its deficiency is linked to various age-related diseases. Research demonstrated that Klotho has antioxidative properties, modulates insulin signalling, and influences pathways related to longevity and health span.
Efforts were made to develop therapies aimed at increasing Klotho levels or mimicking its effects. This included gene therapy, Klotho protein supplementation, and small molecules that could upregulate Klotho expression.
Lower levels of Klotho were associated with several conditions, including chronic kidney diseases (CKD), cardiovascular diseases, osteoporosis, and neurodegenerative diseases like Alzheimer's. These associations prompted extensive research into Klotho as a potential biomarker and therapeutic target for these diseases.
Clinical studies investigated the correlation between circulating Klotho levels and diseases outcomes in humans. These studies aimed to validate Klotho as a biomarker for aging and various diseases.
Researchers explored genetic variations in the Klotho gene and their associations with health and longevity in human populations. Some polymorphisms were linked to increased lifespan and reduced risk of certain diseases.
Mouse models with altered Klotho expression were used to study its effects on aging and diseases processes. These models provided insights into the molecular mechanisms by which Klotho influences health and aging.
The discovery of Klotho attracted attention beyond the scientific community, with public interest in anti-aging research and potential longevity interventions growing.
Overall, the discovery of Klotho has had a profound impact on the fields of aging research, nephrology, endocrinology, and beyond, spurring
ongoing investigations into its therapeutic potential and role in human health
KLOTHO: THE SECRET TO LONGEVITY, ANTI-AGING, AND TRANSFORMATIVE HEALTH.
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