Dehydroacteoside rejuvenates senescence via TVP23C-CDRT4 regulation
Yoo Jin Lee1, Eun Seon Song1, Yun Haeng Lee1
1Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, Incheon 22012, Republic of Korea.
Abstract:
One of the major factors inducing senescence is reactive oxygen species (ROS) produced from dysfunctional mitochondria. Therapeutic strategies that reduce mitochondrial ROS generation are considered essential for rejuvenating senescence, but effective methods have not yet been established. Here, we screened phenylpropanoids (PPs), secondary metabolites produced in response to oxidative stress in plants, and identified dehydroacteoside as a potential candidate. Dehydroacteoside restored mitochondrial function, thereby reducing mitochondrial ROS generated by inefficient electron transport. Furthermore, senescence-associated phenotypes were restored by dehydroacteoside-mediated ROS reduction. Using RNA sequencing, we identified TVP23C-CDRT4 as a gene that plays a critical role in dehydroacteoside-mediated senescence rejuvenation. Knockdown of TVP23C-CDRT4 showed similar effects to dehydroacteoside, reducing ROS and subsequently restoring senescence-associated phenotypes. Taken together, our study uncovered a novel mechanism by which dehydroacteoside reduces mitochondrial ROS generation, thereby restoring senescence. Our findings open the way to a new field of anti-aging therapy aimed at controlling senescence by modulating ROS production in mitochondria.
Insights
This study identifies dehydroacteoside as a compound that rejuvenates senescence by reducing mitochondrial reactive oxygen species (ROS). It also uncovered a gene, TVP23C-CDRT4, involved in this anti-aging process.
Area of Science:
- Biochemistry
- Cell Biology
- Aging Research
Background:
- Mitochondrial dysfunction and reactive oxygen species (ROS) are key drivers of cellular senescence.
- Current therapeutic strategies for senescence rejuvenation are limited, highlighting the need for novel approaches.
Purpose of the Study:
- To identify natural compounds that can mitigate senescence by targeting mitochondrial ROS.
- To elucidate the molecular mechanisms underlying dehydroacteoside-mediated senescence reversal.
Main Methods:
- Screening of plant-derived phenylpropanoids (PPs) for anti-senescence activity.
- Assessment of mitochondrial function and ROS levels in response to dehydroacteoside treatment.
- RNA sequencing to identify genes involved in the dehydroacteoside pathway.
Main Results:
- Dehydroacteoside was identified as a potent agent that restores mitochondrial function and reduces ROS production.
- Dehydroacteoside treatment reversed senescence-associated phenotypes.
- The gene TVP23C-CDRT4 was found to be critical for dehydroacteoside's effects on ROS reduction and senescence rejuvenation.
Conclusions:
- Dehydroacteoside offers a novel therapeutic strategy for combating senescence by targeting mitochondrial ROS.
- Modulating mitochondrial ROS production presents a promising avenue for developing new anti-aging therapies.
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