Bitter herbs, which supplied by XI’AN SPRINGJIA BIO–TECHNIQUE CO.,LTD, bring therapeutic benefits. As one of the most famous bitter cooling botanicals in traditional herbal system, Coptis chinensis is widely recognized for heat-clearing and detoxifying properties. Now modern science uncovers its hidden anti-aging potential.
Researchers from Kumamoto University and other institutes published impactful findings in npj Aging, a Nature-partner journal. They identified mitochondria-targeting anti-aging molecules derived from Coptis chinensis and Phellodendron chinense. After structural optimization, the novel mitochondrial activator Mitorubin was generated. In animal studies, Mitorubin repaired age-damaged hearts and delivered a 32% maximum-lifespan extension under high-fat-diet metabolic stress.
The lifespan limit of heart: cardiac aging rooted in cardiomyocyte mitochondria.
The human heart beats roughly 2.5-3.0 billion times across a lifetime. Starting from the 4th week of embryonic development, the heart beats around 100 000 times every day, delivering oxygen and nutrients throughout the body.
If every heart beat consumes a limited “lifetime quota”, improving beating efficiency represents a promising strategy to delay cardiac aging and preserve vitality.
The heart is one of the most energy-demanding organs. Cardiomyocyte mitochondrial quality largely determines cardiac health. Healthy mitochondria do not exist as isolated sausage-shaped units. To meet extreme energy demand during heart contraction, mitochondria interconnect and form long, dynamically-communicating energy networks.
This network maintains continuous renewal: functional mitochondria sustain elongated network architecture; worn-out damaged mitochondria fragment and get cleared and renovated to keep the mitochondrial pool vigorous.
MITOL protein acts as the core quality-control regulator, monitoring mitochondrial morphology and facilitating removal of impaired mitochondria. Studies show that cardiac-specific MITOL silencing in young mice rapidly triggers hallmarks of age-related heart failure: cardiac hypertrophy, ventricular dilation and weakened contraction. Furthermore, MITOL expression drops sharply after birth and keeps declining with age, accelerating organ deterioration.
Boosting MITOL expression becomes an attractive target against cardiac aging.
XI’AN SPRINGJIA BIO-TECHNIQUE CO.,LTD continuously tracks pharmacological advances of botanically-derived bioactive compounds. Plant extracts constitute a valuable reservoir for functional-ingredient innovation.
The bitter truth: Berberrubine, rather than berberine, drives MITOL activation.
The research team screened a large panel of herbal plant extracts with reputed longevity-promoting effects in cellular assays.
Strikingly, extracts from Coptis chinensis and Phellodendron chinensis raised cellular MITOL protein level by 3-fold. In-vivo mouse tests also confirmed significant MITOL up-regulation in heart and other organs.
Berberine is the signature marker compound of coptis and phellodendron. Researchers initially hypothesized berberine to be the active agent.
But, there is no effect on MITOL abundance showed by direct berberine treatment. The true effect appeared to be berberrubine which is the endogenous metabolite of berberrine.
Berberrubine robustly elevated MITOL, alongside multiple key mitochondrial proteins: Tom20 for mitochondrial protein import, Mfn2 governing mitochondrial fusion, and ATP5a critical for ATP synthesis.
Nevertheless, berberrubine suffers from severe poor water-solubility. After oral intake, most molecules cannot dissolve and penetrate cells and are excreted, resulting in very low bioavailability.
Through chemical modification by reacting berberrubine with acetic acid, researchers obtained Mitorubin, a yellow solid with greatly improved water solubility comparable to table sugar, solving the solubility bottleneck. Its name combines “mitochondria” and “berberrubine”, reflecting its purpose as a mitochondria-activating agent.
Mitorubin in-vivo trials: 12-week intervention rejuvenates aged heart and unlocks lifespan benefit
24-month-old mice (equivalent to human 70-80 years old) received 0.5 mg/mL Mitorubin in drinking water for 12 weeks. Three major outcomes were observed.
- Reversing age-related cardiac damageEchocardiography demonstrated reduced ventricular dilation and hypertrophy, with improved systolic and diastolic performance. Anatomical examination showed alleviated compensatory cardiac enlargement and pulmonary congestion caused by heart failure. Expression of heart-failure-and-fibrosis-related genes including Nppa, Nppb and Collagen1a1 was markedly down-regulated.
- Restoring full mitochondrial renewal machineryMitochondrial basal respiration, ATP-linked respiration and maximal respiratory capacity were all enhanced in Mitorubin-treated hearts. Three core mitochondrial pathways were activated: mitochondrial biogenesis (Pgc1α, Tfam), mitochondrial fusion-fission dynamics (Mfn1, Opa1), and autophagic clearance of damaged mitochondria.
Notably, Mitorubin induces mild physiological oxidative stress, a similar hormetic effect triggered by exercise or caloric restriction. Moderate stress further boosts cellular repair capacity and strengthens mitochondrial fitness.
- Approximately 32% maximum-lifespan extension under metabolic pressureNatural-aging mice die from various causes including tumor development; Mitorubin cannot counteract tumor-driven mortality. Under high-fat-diet-induced metabolic stress, mice develop accelerated cardiac aging, lipid accumulation, mitochondrial dysfunction and myocardial hypertrophy. Mitorubin-treated animals maintained better cardiac health and achieved ~32% longer maximum lifespan versus control groups.
This result proves that Mitorubin delivers tangible anti-aging and lifespan-extending effects when metabolic damage and cardiac deterioration constitute main aging drivers. The research team has founded a startup to push forward commercial translation.
Research insight: Mitochondrial renewal goes beyond simply supplying metabolic fuel.
Mitorubin follows a distinct working mechanism compared with NAD+ precursors such as NMN and NR. NAD+ precursors mainly supply metabolic substrates; Mitorubin prioritizes boosting the full mitochondrial fusion-fission-autophagy renewal cycle to continuously refresh mitochondrial networks. This suggests sustaining organelle turnover can be more vital than merely providing energy-related substrates.
Unlocking modern scientific value from traditional botanicals remains a promising direction for functional raw-material innovation.