Article ; Online: Innovative Approaches and Advances for Hair Follicle Regeneration.
ACS biomaterials science & engineering
2023 Volume 9, Issue 5, Page(s) 2251–2276
Abstract: Pathological hair loss (also known as alopecia) and shortage of hair follicle (HF) donors have posed an urgent requirement for HF regeneration. With the revelation of mechanisms in tissue engineering, the proliferation of HFs in vitro has achieved more ... ...
| Abstract | Pathological hair loss (also known as alopecia) and shortage of hair follicle (HF) donors have posed an urgent requirement for HF regeneration. With the revelation of mechanisms in tissue engineering, the proliferation of HFs in vitro has achieved more promising trust for the treatments of alopecia and other skin impairments. Theoretically, HF organoids have great potential to develop into native HFs and attachments such as sweat glands after transplantation. However, since the rich extracellular matrix (ECM) deficiency, the induction characteristics of skin-derived cells gradually fade away along with their trichogenic capacity after continuous cell passaging in vitro. Therefore, ECM-mimicking support is an essential prelude before HF transplantation is implemented. This review summarizes the status of providing various epidermal and dermal cells with a three-dimensional (3D) scaffold to support the cell homeostasis and better mimic in vivo environments for the sake of HF regeneration. HF-relevant cells including dermal papilla cells (DPCs), hair follicle stem cells (HFSCs), and mesenchymal stem cells (MSCs) are able to be induced to form HF organoids in the vitro culture system. The niche microenvironment simulated by different forms of biomaterial scaffold can offer the cells a network of ordered growth environment to alleviate inductivity loss and promote the expression of functional proteins. The scaffolds often play the role of ECM substrates and bring about epithelial-mesenchymal interaction (EMI) through coculture to ensure the functional preservation of HF cells during in vitro passage. Functional HF organoids can be formed either before or after transplantation into the dermis layer. Here, we review and emphasize the importance of 3D culture in HF regeneration in vitro. Finally, the latest progress in treatment trials and critical analysis of the properties and benefits of different emerging biomaterials for HF regeneration along with the main challenges and prospects of HF regenerative approaches are discussed. |
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| MeSH term(s) | Humans ; Hair Follicle/pathology ; Dermis/metabolism ; Dermis/pathology ; Regeneration ; Alopecia/metabolism ; Alopecia/pathology ; Alopecia/therapy ; Tissue Engineering |
| Language | English |
| Publishing date | 2023-04-10 |
| Publishing country | United States |
| Document type | Journal Article ; Review |
| ISSN | 2373-9878 |
| ISSN (online) | 2373-9878 |
| DOI | 10.1021/acsbiomaterials.3c00028 |
| Database | MEDical Literature Analysis and Retrieval System OnLINE |
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