# Anti-aging effect of Hedgehog signaling

## TL;DR

The Hedgehog signaling pathway helps maintain tissue function and may slow aging by enhancing regeneration and reducing age-related decline.

## Contribution

This review highlights the novel role of Hedgehog signaling in counteracting aging across multiple tissues.

## Key findings

- Hh signaling activation improves tissue regeneration and progenitor cell function in preclinical models.
- Modulating Hh signaling reduces chronic inflammation and stem cell exhaustion associated with aging.
- Therapeutic strategies targeting Hh show potential for mitigating age-related decline and extending healthspan.

## Abstract

Aging is characterized by the progressive loss of physiological integrity, leading to impaired tissue function and increased vulnerability to chronic diseases. Although the Hedgehog (Hh) signaling pathway is well established as a key regulator of embryonic development and tumorigenesis, emerging evidence suggests it also plays vital roles in adult tissue maintenance, regeneration and immune modulation—processes that are intimately linked to aging. Here we synthesize recent findings demonstrating that the controlled activation of Hh signaling across diverse tissues, including the brain, liver, heart, lung, bone, skin and adipose tissue, can counteract hallmark features of aging such as stem cell exhaustion, mitochondrial dysfunction and chronic inflammation. In preclinical models, Hh pathway modulation enhances tissue regeneration, supports progenitor cell function and suppresses senescence-associated secretory phenotypes. Promising therapeutic strategies—ranging from gene delivery to pharmacological agonists—have shown efficacy in mitigating age-related decline, though challenges remain regarding tissue specificity, long-term safety and tumorigenic risk. By integrating insights from developmental biology, regenerative medicine and geroscience, this Review positions Hh signaling as a compelling target for anti-aging interventions aimed at preserving organ function and extending healthspan.

Aging weakens the body’s ability to maintain balance and repair damage, increasing vulnerability to disease. This study reveals that the Hedgehog (Hh) signaling pathway plays a crucial role in preserving tissue integrity and regenerative capacity. Using animal models, researchers found that activating Hh signaling in multiple tissues such as the liver and brain enhances tissue repair and mitigates age-related functional decline. These findings suggest that targeting Hh signaling could be a promising strategy to promote healthy aging by enhancing regeneration and alleviating age-related dysfunction.

This summary was initially drafted using artificial intelligence, then revised and fact-checked by the author.