Inhibition of PDK1 Can Reverse Cell Aging

Inhibition of PDK1 Can Reverse Cell Aging

Posted by Valerie Walters on Dec 4, 2020 1:47 pm

Recent studies showed that cellular senescence, previously considered an irreversible biological phenomenon, may represent a reversible state, but the mechanism for the reversion is not well elucidated. Last month, Research findings by a Korean team provide insight into the complex mechanism of cellular senescence and present a potential therapeutic strategy for reducing age-related diseases associated with the accumulation of senescent cells.

To identify targets the inhibition of which would convert senescent cells into quiescent cells, the researchers constructed a molecular regulatory network model of cellular senescence. From ensemble analysis of network models, they identified 3-phosphoinositide–dependent protein kinase 1 (PDK1) as a promising target for inhibitors to convert the senescent state to the quiescent state. The researchers validated this prediction in experiments with human dermal fibroblasts, which showed that PDK1 inhibition eradicates senescence hallmarks by suppressing both nuclear factor κB and mTOR signaling through the inactivation of a positive feedback loop composed of PDK1, AKT, IKBKB, and PTEN, resulting in restored skin regeneration capacity. The findings were published in the Proceedings of the National Academy of Sciences.

PDPK1 is a master kinase, which is crucial for the activation of AKT/PKB and many other AGC kinases including PKC, S6K, SGK. An important role for PDPK1 is in the signaling pathways activated by several growth factors and hormones including insulin signaling.

"Our research opens the door for a new generation that perceives aging as a reversible biological phenomenon," says Professor Kwang-Hyun Cho of the Department of Bio and Brain Engineering at the Korea Advanced Institute of Science and Technology (KAIST), who led the research with colleagues from KAIST and Amorepacific Corporation in Korea. The scientists recommend investigations are next done in organs and organisms to determine the full effect of PDK1 inhibition. Since the gene that codes for PDK1 is overexpressed in some cancers, the scientists expect that inhibiting it will have both anti-aging and anti-cancer effects.

"The study showed the potential for reverse the aging process, which has been recognized as an irreversible phenomenon in life," Professor Cho said. "This research marked the beginning of a new era that can prevent diseases related to aging and prolong life span."

PDK1 inhibitors that are currently available

Compound More information
BX795 https://www.vulcanchem.com/product/inhibitors/VC1096301
BX912 https://www.vulcanchem.com/product/inhibitors/VC1096719
OSU-03012 https://www.vulcanchem.com/product/inhibitors/VC1096819
PHT-427 https://www.vulcanchem.com/product/inhibitors/VC1096825
GSK2334470 https://www.vulcanchem.com/product/inhibitors/VC1096761
KRX-0601 https://www.vulcanchem.com/product/inhibitors/VC1096777

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Posted by Calvin Dalton on Sep 16, 2021 5:43 am

Awesome! We also have students from Atlanta doing the same research. An important role for PDPK1 is in the signaling pathways activated by several growth factors and hormones including insulin signaling. Keep it up! 

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Re: Inhibition of PDK1 Can Reverse Cell Aging

Posted by Kean Sargent on Nov 2, 2021 11:18 am

My deepest respect and compliments to Professor Kwang-Hyun Cho of the Bioengineering and Brain Engineering Department of the Korea Advanced Institute of Science and Technology (KAIST). The problem of aging is of concern to humanity, including because of the fear of death. While we all understand that we will not live forever, we all want this event to happen as late as possible.
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