Resolutive Treatment of Actinic Keratosis through Peptides Extracted from Zebrafish Conveyed Across Laser-assisted Transcutaneous Delivery (Cryopass Therapy)
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Updated: Jul 7, 2026

Screening for Melanoma Modifiers using a Zebrafish Autochthonous Tumor Model
Published on: November 13, 2012
Pier Mario Biava1, Stefano Ciaurelli2, Andrea Nicolini3
1Turati Medical Center, Piazza Cavour 1, Milano, Italy.
Introduction:
Actinic keratoses (AKs) are humans' most common keratinocyte- derived precancerous lesions. They can be observed predominantly in fair-skinned individuals on sun-exposed surfaces. Another name for AKs is solar keratosis. The primary risk factor for AKs is cumulative UV exposure from sunlight and/or tanning salons. AKs may present on a patient as a few detectable lesions. Clinically, they present as scaly erythema lesions with various pigmentations. Surgery treatment is the only approach that can definitively resolve the illness.
Methods:
The research aims to demonstrate the effectiveness of treating relapsing AKs through the use of factors present during organogenesis extracted from zebrafish caviar conveyed through a cryopass therapy device (cryolaser phoresis). These factors are peptides present during specific phases of organogenesis and have shown the capacity to reverse cancer and neurodegeneration processes through gene, transcriptional, translational, and post-translational regulation.
Results:
We found that 90% of patients responded. The percentage of responding patients was 100% among females and 80% among men.
Conclusion:
Our results confirm previous findings about the effectiveness of stem cell differentiation stage factors (SCDFs) in cancer and open new ways to integrate treatment.
Insights
This study shows that zebrafish caviar-derived factors effectively treat actinic keratoses (AKs), with 90% of patients responding. This novel therapy offers a promising alternative for precancerous skin lesion treatment.
Area of Science:
- Dermatology
- Regenerative Medicine
- Oncology
Background:
- Actinic keratoses (AKs), or solar keratoses, are common precancerous skin lesions originating from keratinocytes.
- Cumulative UV exposure is the primary risk factor, predominantly affecting fair-skinned individuals on sun-exposed areas.
- Current definitive treatment for AKs is surgical.
Purpose of the Study:
- To evaluate the efficacy of a novel therapy for relapsing AKs.
- To investigate the use of organogenesis-derived factors from zebrafish caviar.
- To assess treatment delivery via a cryolaser phoresis device.
Main Methods:
- Utilized cryolaser phoresis to deliver specific organogenesis-stage peptides extracted from zebrafish caviar.
- These peptides are known to regulate gene expression at multiple levels (transcriptional, translational, post-translational).
- The therapy aimed to reverse cancerous and neurodegenerative processes.
Main Results:
- A significant 90% overall patient response rate was observed.
- Treatment efficacy was higher in females (100% response) compared to males (80% response).
Conclusions:
- Results support previous findings on the efficacy of stem cell differentiation stage factors (SCDFs) in cancer treatment.
- This approach presents a new avenue for integrating regenerative factors into cancer therapy.
- The study highlights the potential of zebrafish-derived factors in managing precancerous lesions.
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