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In this study, the researchers developed a biomimetic multilayer composite scaffold combining a decellularized amniotic membrane, fibroblast-laden collagen gel, and epidermal stem cells, which healed full-thickness skin wounds more quickly and effectively by regenerating hair follicles without scarring compared to Moropicin ointment.

In this study, Exosome Hypoxia Mesenchymal Stem Cells significantly reduced inflammation and promoted hair follicle regeneration by normalizing IL-1Beta and IGF-1 levels in fluconazole-induced alopecia-like Wistar rats.

In this study, researchers developed a programmable system using engineered nanovesicles from hair follicle stem cells to modulate immune responses, which showed promise in precisely controlling inflammation, promoting immune balance, and accelerating wound healing, particularly for infected wounds.

In this study, the authors reported that combining PMSC-secretome and Wnt10b in a GelMA hydrogel scaffold promoted effective hair follicle biofabrication and hair growth in a small in vivo experiment. They emphasized the need for larger studies to confirm these results.

This literature review highlights recent advancements in hair follicle regeneration techniques, noting the potential of combining stem cell technology, 3D bioprinting, and epigenetic modulation to create precision therapies. However, it emphasizes ongoing challenges such as achieving long-term viability and scalability for clinical application.

This case study suggests that rose stem cell-derived exosomes, administered via noninvasive electroporation, may promote hair regeneration in androgenetic alopecia; larger studies are needed to confirm these findings.

This review discussed the potential of induced pluripotent stem cells (iPSCs) for hair follicle regeneration, covering current approaches and challenges, iPSC differentiation, and their possible future clinical applications in hair restoration.

This study suggests that early-stage dermal papilla cell-derived exosomes may enhance adipose stem cells' hair inductive abilities through specific miRNAs.

The researchers reported that treatment with adipose-derived stem cell conditioned medium significantly increased hair count in the study participants, suggesting it is an effective therapy for hair regeneration.

In this study, keratin hydrogels derived from human hair were found to significantly enhance nerve regeneration in a mouse model, acting effectively as scaffolds by influencing Schwann cell behavior.

In this study, murine fetal epidermal stem cells successfully formed new hair follicle structures when cografted with folliculus pili cells in nude mice.

This review discusses the potential of using human pluripotent stem cells to generate new hair follicles, though practical challenges remain before it can be applied for hair restoration.

In this study, a transgenic mouse model was used to demonstrate that targeted cell loss in different tissues led to varying degrees of regenerative outcomes, including reversible impaired glucose tolerance, irreversible hair loss, and permanent moderate deafness.

This review highlights that T cells are crucial in regulating hair follicle regeneration and their disruption can lead to alopecia, providing insights into hair disorders related to T cell immune balance and hair follicle regeneration.

In this study, researchers found that disrupting desmoglein 3 signaling in a mouse model of pemphigus vulgaris activates normally quiescent hair follicle stem cells, compromising their multipotency but prompting a regenerative response that restores stem cell function and structures.

In this laboratory study, the researchers found that combining dermal papilla cell-derived exosomes with collagenous sequences significantly enhanced hair follicle stem cell migration and proliferation, highlighting a potential strategy for hair regeneration through modulation of the hsa-novel-238a-CASP9 axis.

This study reported that depleting the pro-apoptotic protein Bax in hair follicle stem cells enables these cells to kill nearby viable cells by sequestering TNFα, which increases the stem cell pool and accelerates tissue regeneration, suggesting potential implications for therapies targeting tissue repair and cancer.

This study found that inhibiting DPP4 during a critical period post-wounding increases hair follicle regeneration and Wnt signaling in large skin wounds.

This study found that delivering math1 via an adenovector led to vestibular hair cell regeneration and improved balance function in ototoxin-treated adult mice.

Aging causes hair loss and graying due to stem cell decline and changes in cell behavior and communication.

In this study, the RADA-PRG hydrogel enhanced SKP proliferation, survival, and gene expression, effectively supporting hair follicle regeneration in mice.

This review discusses manipulating the stem cell niche as a strategy in regenerative medicine to repair damaged tissues, highlighting the potential benefits and challenges but reporting no new results.

This study reports that hair regeneration in live mice involves spatially regulated stem cell divisions and requires mesenchymal interactions, observed in real-time using a novel non-invasive imaging method.

This study found that a new "bead-jet" printing system for mesenchymal stem cells in Matrigel beads improved skeletal muscle regeneration and skin healing in a high-density, sparse pattern.

This study found that intradermal administration of adipose-derived stem cell–conditioned medium significantly increased hair density and dermal thickness, suggesting potential regenerative effects on both hair follicles and the interfollicular scalp in patients with alopecia.

This study found that using uniform poly(lactic-co-glycolic) acid microspheres to deliver insulin-like growth factor 1 stabilizes the protein and enhances its sustained delivery, supporting stem cell functions comparably to traditional methods, and showing potential for tissue and organ regeneration.

This review discusses advances in 3D bioengineering technologies for regenerating complex oral organs and suggests they could play a key role in future organ replacement therapy.

This study suggests that human dermal fibroblasts can be converted into dermal papilla cell-like cells using microencapsulation, which may facilitate hair follicle regeneration in mice without chemical or genetic reprogramming.

This study found that human umbilical cord-derived mesenchymal stromal cell-conditioned media was safe and positively affected hair regeneration in 86.6% of participants in a pilot study.

In this study, researchers explored how hair follicle neural crest stem cell-derived exosomes, particularly those carrying miR-214-3p, promote neurite outgrowth and aid peripheral nerve regeneration, supported by detailed in vitro and in vivo data on nerve repair and functional recovery in rat models.