Collagen & Skin: Keratinocytes vs. Fibroblasts – New Research
- Okayama, Japan—For decades, the prevailing view in dermatology has been that fibroblasts, specialized cells in the dermis, are solely responsible for producing skin collagen.
- the study, published in Nature Communications, reveals that keratinocytes produce collagen, which is then transferred to the dermis.
- Researchers tracked collagen advancement in axolotls of varying sizes, using advanced microscopy.
Scientists are reshaping skincare as research reveals keratinocytes, not fibroblasts, are key to skin collagen production. The long-held belief about fibroblasts’ role is challenged by Okayama University‘s groundbreaking findings published in Nature Communications, which highlight how keratinocytes create this vital protein. This discovery, examined across species, promises to reshape dermatology. See how keratinocytes produce dermal collagen,and how fibroblasts modify it.News Directory 3 can bring you more on this. Could this be the future of anti-aging skincare and regenerative medicine? Discover what’s next …
Keratinocytes’ Role in Skin Collagen Production Challenged
Updated June 17, 2025
Okayama, Japan—For decades, the prevailing view in dermatology has been that fibroblasts, specialized cells in the dermis, are solely responsible for producing skin collagen. Though, scientists at okayama University are challenging this long-held belief, identifying a key role for keratinocytes in collagen formation. Their research, focused on the ‘glass-skinned’ axolotl and other vertebrates, suggests that keratinocytes, the surface cells of the skin, are the primary source of collagen, a critical protein for skin strength and texture.
the study, published in Nature Communications, reveals that keratinocytes produce collagen, which is then transferred to the dermis. Fibroblasts afterward migrate into this collagen layer,modifying and reinforcing its structure. This discovery significantly alters our understanding of how skin maintains its integrity and could lead to new approaches in skincare and regenerative medicine.
Researchers tracked collagen advancement in axolotls of varying sizes, using advanced microscopy. They observed that a collagen layer formed before fibroblasts appeared. Using a novel labeling technique, they pinpointed keratinocytes as the source of this initial collagen production.
“So far, fibroblasts have been thought to be the major contributors to skin collagen,” said Ayaka Ohashi, a Ph.D. student at Okayama University. ”But the present study demands a change in mindset. We clarified that keratinocytes are primarily responsible for dermal collagen formation.”
To confirm these findings, the team examined zebrafish, chick embryos, and mouse embryos. The results consistently showed that keratinocytes drive collagen production, indicating an evolutionarily conserved mechanism across vertebrates. This new understanding of the keratinocytes’ role in skin collagen production could revolutionize cosmetic science.
What’s next
The research team, led by Professor Akira Satoh, believes that understanding how axolotls maintain collagen production in keratinocytes throughout their lives could unlock secrets to combating skin aging in humans. Future research will focus on clarifying the mechanisms that allow axolotls to maintain youthful skin, potentially leading to new treatments for collagen-related conditions and innovative cosmetic formulations.