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This study found that in psoriasis patients, the K17 protein probably functions as an autoantigen, with the HLA-Cw*06:02 risk genotype strongly linked to the T cell response size.

This study found that interleukin-1α and interleukin-7 secreted by keratinocytes enhance the proliferation of γδT-cells and epidermal stem cells, revealing mechanisms of stem cell activation during wound healing in mice.

In this study, IL-1α and IL-7 were found to work together to activate epidermal γδ T-cells, which in turn promote hair follicle stem cell proliferation during mouse wound healing.

This study found that IL-1α and IL-7 secreted from keratinocytes in a genetically engineered mouse model can stimulate the expansion of γδT-cells, aiding in the proliferation of epidermal stem cells for wound healing.

This study found that antroquinonol inhibited CD8+ T cell proliferation and reduced proinflammatory cytokine secretion in vitro, while also ameliorating H2O2-induced depigmentation and resisting reductions in hair follicle length, skin thickness, and tyrosinase expression in mice.

This study found distinct gene expression profiles in alopecia areata-affected skin, suggesting T-cell mediated immune responses and unique gene profiles between different stages of the disease.

This study demonstrated that stress inhibited hair growth in mice, likely through substance P-dependent activation of immune cells, highlighting a brain-hair follicle connection.

This study identified Th22 cells as key effectors in hair regeneration driven by thymosin beta 15, suggesting they could be potential targets for hair regrowth therapies.

This study found that intradermal injections of plant-derived exosomes in adults with early-stage alopecia increased stem cell activity, activated Wnt signaling pathways, and reduced certain immune cell populations, providing insights into their role in hair follicle regeneration and suggesting potential for hair restoration therapy.

This article reviews the emerging non-inflammatory roles of regulatory T cells in the skin and reports no new clinical findings, suggesting broad biological influence beyond traditional immune functions.

This study found that dendritic epidermal T cells and their exosomes enhance epidermal stem cell proliferation, accelerating wound re-epithelialization in the skin.

This study found that sterile fucoidan promotes T cell proliferation but reduces differentiation at higher concentrations and suppresses osteogenic differentiation in co-cultured environments.

In this study, the researchers used a human hair follicle model to demonstrate that T cell stimulation can induce an alopecia areata–like phenotype, with cell proliferation and immune privilege collapse; however, the DHODH inhibitor farudodstat partially mitigated these effects by reducing T cell proliferation.

In vivo using the C3H mouse model, this study observed that BST2 expression occurs before hair loss in alopecia areata and is followed by an increase in epidermal γδ T cell numbers.

This study found that human skin grafted onto certain immunodeficient mice resulted in proliferative scars with characteristics similar to human hypertrophic scars, suggesting these models may better represent the condition's natural history.

Farudodstat may effectively treat alopecia areata without harmful side effects.

In this abstract, the issue of "microinflammation" in hair follicles, central to androgenetic alopecia, is described as involving an inflammatory process with Langerhans cells and keratinocytes presenting antigens to T lymphocytes, leading to an immune response with macrophages or natural killer cells destroying these antigens.

This study found that in an ex vivo model simulating alopecia areata, the DHODH inhibitor farudodstat reduced T-cell proliferation and MHC protein expression in hair follicles, suggesting it may protect against immune privilege collapse without cytotoxic effects.

In this study, miR-218-5p was found to enhance hair shaft growth and positively regulate the Wnt signaling pathway by targeting SFRP2 during skin and hair follicle development.

This study found that Wnt secretion is important for maintaining skin homeostasis in mice, as Evi-deficient mice developed psoriasis-like skin lesions and had an imbalance in immune cell populations.

This article reviews sebaceous immunobiology and highlights the complex role of sebaceous glands and sebocytes in skin barrier function and inflammation, particularly in acne pathogenesis, but reports no new results.

Farudodstat may help treat alopecia areata by protecting hair follicles.

This study suggests that IL-33 promotes hair follicle changes and T cell infiltration in psoriatic mice and humans, contributing to psoriatic alopecia.

This study found that 363 genes were differentially expressed in alopecia areata skin compared to non-lesional skin, suggesting T-cell mediated immune responses and distinct gene profiles related to the disease's stage.

This study found that UV radiation-induced fibroblast depletion in the skin is primarily due to a deregulated inflammatory response, with T cells aiding fibroblast survival under stress.

This study found that SM04755, a novel topical drug, inhibited inflammation, keratinocyte proliferation, and fibrosis in vitro and improved skin health in a mouse model of psoriasis, indicating potential as a topical psoriasis treatment.

This study reports a novel mutation in the TP63 gene associated with T and B cell lymphopenia in an EEC patient, suggesting that EEC diagnosis should include TREC assay and evaluation for immunodeficiency.

In this study, hair follicle-derived mesenchymal stromal cells showed potential for immunomodulation, with equivalent or superior responses compared to those from adipose tissue, suggesting a promising alternative cell source.

This study developed immortalized human hair follicle-derived mesenchymal-like stromal cells (iHF-MSCs) as a consistent source of therapeutic secretome, reporting their superior immunomodulatory and regenerative performance, potentially advancing cell-free therapies for inflammation and tissue repair.

This study found that extracts from Cirsium japonicum var. spinossimum seeds are rich in polyphenols and flavonoids, demonstrating significant anti-inflammatory and cell proliferation effects in specific cell models, suggesting potential as a source for anti-inflammatory and anticancer agents.