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This study observed that human hair follicles with a completely destroyed bulb can regenerate after being grafted onto immunodeficient mice, entering a shortened dystrophic telogen followed by anagen phase.

Mesenchymal stem cells from bone marrow and umbilical cord can help regenerate hair follicles.

Ashwagandha nanoparticles help hair grow by increasing a growth factor.

This study found that epimorphin is closely linked to developing hair follicles in human fetuses, suggesting it plays a significant role in hair follicle morphogenesis.

This study reports two cases of trichoblastic neoplasms with histologic features suggesting they may be distinct, locally aggressive trichoblastic carcinomas separate from basal cell carcinoma.

In this study, researchers found two distinct stem cell reservoirs in human hair follicles that require mesenchymal cells for stem cell proliferation.

This research observed that dermal papilla cells have the potential to regenerate hair bulbs under preferred environmental conditions when associated with dermal sheath cells or exposed to specific growth factors.

Tanshinone Capsule may help regrow hair by boosting specific cell signals.

This study found that testosterone and dihydrotestosterone significantly decreased the proliferation of papilla cells compared to dermal fibroblasts and outer root sheath keratinocytes in cultured hair follicle cells.

This review discusses the various stem cell populations associated with hair follicles and their potential in regenerative medicine, highlighting differences between murine and human hair follicles but reports no new clinical results.

This study developed a 3D engineered hair follicle model that mimics the native hair bulb and may aid in drug screening for hair growth therapies.

This study found that Runx3 deficiency in mice affects hair type and shape, suggesting it may regulate hair formation through interactions between dermal and epidermal layers.

In this study, researchers detailed how hair follicles regenerate after microsurgical amputation, observing a wound reaction involving dynamic dermal-epidermal interactions and changes in extracellular matrix components.

In this study, researchers found that ex vivo and in vivo administration of the TYK2 inhibitor BMS-986202 prevented immune privilege collapse and promoted hair regrowth in models of alopecia areata, suggesting this approach may offer a new therapeutic avenue deserving of clinical investigation.

This article reviews the autonomous functioning and complex interactions within hair follicles, emphasizing their unique composition and differentiation pathways, but does not report new research findings.

Targeting immune pathways like JAK/STAT may help treat frontal fibrosing alopecia.

This study found that CD90+ stem cells with fibroblast-like morphology are present in the lower part of the anagen hair follicle in dogs.

This study developed molecular signatures for dermal papilla cells and their niche, uncovering novel signaling regulators and genes linked to hair disorders, which may inform future hair development research.

This article reviews the role of epithelial-mesenchymal interactions in hair follicle morphogenesis and the hair cycle, suggesting potential paths for developing treatments for hair growth disorders but providing no new clinical findings.

This review discusses the development and advances in studying trichogenic dermal cells for hair follicle morphogenesis, summarizing methods, bioassays, and molecular markers, but reports no new research findings.

The TGF-β family helps control how cells change and move, affecting skin, hair, and organ development.

This article reviews methods to enhance epithelial–mesenchymal interactions for hair follicle bioengineering but does not present new experimental results; it emphasizes optimizing combinations for successful regeneration.

This study found that epidermal and fibroblast growth factors increased proliferation of human hair bulb papilla cells and root sheath fibroblasts in vitro, while hydrocortisone decreased it and minoxidil had no effect.

This study suggests that mesenchymal stem cell-induced dermal papilla-like tissues can generate new hair follicles in mice, indicating potential for developing hair cell therapy using stem cells.

This study found that the dermal papilla of the hair follicle regulates stem cell quiescence and regeneration by modulating Shh and Wnt signaling pathways, highlighting the importance of signaling cross talk in regeneration.

This review discusses mesenchymal–epithelial interactions in hair follicle development and cycling, highlighting recent insights without reporting new experimental results.

This speculative review discusses hair cycle-dependent fibroblast dynamics and possible impacts on human hair growth, synthesizing current literature without presenting new clinical findings.

In this study, researchers differentiated induced pluripotent stem cells into cells with dermal papilla-like properties, demonstrating their potential role in hair follicle bioengineering and drug testing for hair growth.

In this study, androgen receptors were found only in the mane follicles of red deer stags during the breeding season, suggesting their expression is induced by seasonal hormone changes.

In this study, researchers found that synchronization between expanding epithelial cells and background mesenchymal cells in the mouse hair cycle may be maintained by inhibitory regulation, with potential mediators of this regulation identified.