226 citations
,
May 2004 in “Journal of Biological Chemistry” This study identified collagen XXII as a novel extracellular matrix protein specifically present at tissue junctions, where it functions as a cell adhesion ligand for skin epithelial cells and fibroblasts.
109 citations
,
December 2003 in “American Journal of Pathology” This study observed that the ontogenetic transition from scarless repair in early fetal rat wounds to scar-forming repair in late gestation is associated with differential TGF-β ligand and receptor expression patterns.
63 citations
,
March 2018 in “Experimental Dermatology” This review explores the physiological roles of collagen XVII in the epidermis, its involvement in stem cell maintenance, and its connections with signaling pathways, but it reports no new results.
38 citations
,
June 2005 in “Matrix Biology” Minoxidil affects collagen-related genes, potentially helping treat fibrosis.
36 citations
,
January 2007 in “Archives of Histology and Cytology” This study suggests that the absence of alpha5(IV)/alpha6(IV) chains in certain subepidermal basement membrane spots may relate to interactions with melanocytes in human skin.
32 citations
,
May 2015 in “Journal of Investigative Dermatology” This study found that collagen VI influences hair follicle growth and wound-induced regrowth by activating the Wnt/β-catenin signaling pathway in mice, suggesting potential therapeutic targets for hair loss.
31 citations
,
December 2021 in “Materials” In a study using a mouse model of diabetes, chitosan-based hydrogels increased healing markers and improved wound closure and tissue repair compared to untreated wounds, but human efficacy needs further validation.
28 citations
,
April 1988 in “Archives of Dermatological Research” 18 citations
,
February 2023 in “Plants” This study found that PES1CMU-defatted rice bran (DFRB) showed effective skin whitening and anti-aging properties comparable to standard treatments in cell models, suggesting its potential use in dermatocosmetics.
12 citations
,
September 2023 in “Polymers” This study reported that a newly developed hydrogel composed of recombinant type I collagen and chitosan, incorporating a metal–polyphenol structure, demonstrated strong mechanical and healing properties, effectively promoting wound healing in a full-thickness skin defect model.
11 citations
,
August 2021 in “Aging” This study found that TGF-β2 may enhance collagen expression and spheroid formation in human dermal papilla cells, which could improve their hair inductivity and maintenance.
11 citations
,
January 2015 in “Skin pharmacology and physiology” In this study, oral collagen peptides increased certain gene expressions related to epidermis development and the hair cycle in hairless mice skin, suggesting potential links to hair health.
10 citations
,
May 2020 in “Clinical and Experimental Health Sciences” This study found that Tideglusib at 50nM stimulated Type-I collagen production in human gingival fibroblasts and osteoblasts, suggesting potential benefits for bone regeneration.
9 citations
,
March 2019 in “Molecular & cellular proteomics” In this study, around 1% of proteins in skin fibroblasts significantly changed in response to reductive stress, affecting collagens and MAPK signaling pathways.
7 citations
,
April 2020 in “Applied Sciences” In this study, ultrasound was found to alter the distribution of fibronectin in collagen hydrogels, leading to enhanced microtissue formation, suggesting potential applications in tissue engineering.
6 citations
,
May 2023 in “International journal of molecular sciences” This study supports using mesenchymal stem cells cultured with collagen to accelerate skin wound healing in mice and canines, by enhancing epidermal repair and promoting factors essential for skin recovery.
6 citations
,
March 2023 in “Materials” In this study, researchers developed an acellular bioscaffold made from ovine tendon collagen with an antibacterial coating for treating skin wounds. They found that genipin crosslinking improves the scaffold's properties, and with plasma polymerisation, it enhances antibacterial activity, potentially benefiting wound healing.
3 citations
,
November 2020 in “Planta medica international open” This study reported that plant-produced basic fibroblast growth factor effectively promoted cell proliferation and collagen production in vitro, suggesting potential applications in cosmetics for antiaging and hair growth.
2 citations
,
August 2023 in “Marine drugs” In this study, fish-derived collagen hydrolysate from tilapia scales improved hair growth and skin health in both cellular and mouse models, reducing oxidative stress and inflammation while enhancing hair quality and promoting beneficial gene expression.
2 citations
,
January 2014 in “The Korea Journal of Herbology” This study found that Polygoni Multiflori Radix (PMR) reduced collagenase and elastase activity after UVB damage in fibroblasts, suggesting potential anti-aging properties for cosmetic use.
1 citations
,
December 2025 in “International Journal of Molecular Sciences” This study reported that atelocollagen enhances collagen synthesis and reduces oxidative stress in aged skin by increasing glycine uptake through GlyT1, resulting in improved skin elasticity and collagen density in aged mice, with effects superior to glycine alone.
1 citations
,
May 2023 in “Frontiers in endocrinology” The researchers reported that the novel MBTPS2 variant p.Glu172Asp found in a male proband is likely pathogenic, consistent with osteogenesis imperfecta symptoms and molecular signatures, including disrupted fatty acid metabolism and collagen production.
1 citations
,
March 2022 in “IntechOpen eBooks” This chapter discusses various aspects of collagen, proposing "extended collagen carential disease" as a new concept tied to nutritional deficiencies, notably Vitamin C's role in maintaining collagen health.
1 citations
,
June 2018 in “Ukrainian Journal of Dermatology Venerology Cosmetology” Oral collagen improves skin, nails, hair, and reduces cellulite.
This review reports that oral collagen peptide supplements may improve skin elasticity, hydration, and wrinkle appearance while also supporting hair and nail health and wound healing, but emphasizes the need for longer, high-quality studies due to current research limitations and variability in findings.
May 2026 in “Frontiers in Cell and Developmental Biology” In this study, researchers suggest that hair follicle miniaturization in conditions like androgenetic alopecia may result from impaired conversion of quiescent stem cells to progenitor cells, influenced by the follicular niche, its collagen network, and various mechanical constraints.
March 2026 in “Food, Nutrition and Health.” This review highlights research reporting that oral collagen peptide supplements are effective in enhancing skin elasticity, hydration, and reducing wrinkles, although results vary across studies. Oral supplementation was generally well-tolerated, and further investigation is needed to optimize formulations and explore topical application challenges.
January 2026 in “Bioengineering” In this review, various expression systems for synthesizing recombinant collagen are compared, highlighting their efficiency, modification capabilities, and cost. Key purification techniques are also analyzed, and challenges like reducing R&D costs and improving safety protocols are identified.
December 2025 in “Frontiers in Nutrition” This review suggests that although hydrolyzed collagen peptides with certain supplements may improve skin elasticity and joint function, evidence for collagen's anti-aging and regenerative benefits remains inconsistent.
July 2025 in “Advanced Science” In this study, researchers discovered two new signaling pathways that regulate how melanocytes establish pigment patterns in reconstituted hair-bearing skin, offering insights that could inform strategies to prevent hair greying.