Advancements In 3D Skin Bioprinting: Processes, Bioinks, Applications And Sensor Integration

In this study, researchers used 3D bioprinting to successfully create engineered skin tissues with hair follicle-like structures, potentially enhancing skin grafts and safety testing for chemical compounds by more closely mimicking natural skin complexity.

This review highlights that skin organoids, advanced three-dimensional models mimicking human skin, are emerging as effective alternatives to traditional culture models and human skin, overcoming limitations of two-dimensional systems and ethical concerns, and are being increasingly used in areas like developmental biology and disease modeling.

This review discusses recent advancements in 3D bioprinting for skin regeneration and describes potential improvements for clinical applications, but it reports no new experimental results.

This review discusses the development of hair-on-a-chip technology for hair follicle research and alopecia treatment, reporting no new clinical results but highlighting future research directions.

This study used 3D bioprinting to implant epidermal stem cells, skin-derived precursors, and Matrigel into mouse wounds, successfully regenerating hair follicles and skin components within four weeks, with minimal impact on stem cell viability and stemness.

This study presents a bioprinter-based method for creating scalable, automated hair-inductive tissue grafts that showed improved hair shaft sprouting in mice by using suture guides to control orientation.

This study describes a protocol for generating hair-bearing skin organoids from human pluripotent stem cells, achieving full complexity resembling fetal skin tissue by day 130 in vitro.

This study demonstrated that a 3D bioprinting technique using a gelatin/alginate hydrogel scaffold can regenerate entire hair follicles in mice, offering potential advancements in hair loss treatment.

The skin is essential for protection, temperature control, and immune defense.

This study developed an in vitro model revealing that hair follicle spheroids enhanced both sweat gland and hair follicle differentiation within bioprinted scaffolds, while microenvironmental cues supported persistent regeneration.

This review discusses recent advancements in the study and application of epidermal stem cells for wound healing and tissue engineering, without presenting new experimental findings.

This review discusses the protective roles of skin-resident immune cells in maintaining tissue homeostasis and facilitating wound healing, but reports no new experimental findings.

This study demonstrated that enhancing human skin constructs with hair follicles through engineered cell organization and vascularization improved hair growth in immunodeficient mice, suggesting potential advances for treating alopecia and chronic wounds.

This review discusses the potential of single cell technologies to improve understanding and treatment of impaired wound healing and reports no new clinical results.

This review discusses the use of Dermal Papilla cells as in vitro models for studying hair growth modulators, emphasizing their role in aiding the development of new hair treatments, but reports no new clinical results.

In this study, researchers successfully derived skin organoids from mouse pluripotent stem cells that spontaneously produce hair follicles, potentially aiding in hair growth research and in vitro drug testing.

This review discusses strategies and advances in bioprinting for skin wound healing, concluding that bioprinting could offer promising solutions for skin regeneration despite existing challenges.

This study found that 5% activated platelet-rich plasma significantly improved cell proliferation and hair-inductive ability of dermal papilla cells in vitro, and promoted hair follicle formation in mice.

This article discusses the potential of induced pluripotent stem cells (iPSCs) for generating skin components, particularly for genetic skin disorder modeling and gene-corrected regenerative therapies, but reports no new clinical results.

This review discusses the biology and development of skin melanocytes, but reports no new clinical findings.

This review discusses the potential of bioprinting technology in cosmetology, particularly for improving skin functions like pigmentation restoration and hair follicle development, but reports no new clinical findings.

In this study, mixing mouse epithelial and dermal cells was the most successful method for reconstituting hair follicles in mice, with the hair patch assay providing the quickest results.

This research highlights the use of 3D human skin model reconstructs as a promising method to study human skin biology, showing that these models replicate natural melanocyte and melanoma behaviors accurately.

The skin's layers protect, sense, and regulate the body's internal balance, but can be prone to cancer.

This study found that epidermal melanocytes can regenerate hair follicles, whereas non-cutaneous or dermal melanocytes cannot, suggesting two distinct melanocyte lineages with potential implications for melanocyte-related diseases.

This study demonstrates that stem cells from human foreskins, which lack hair follicles, can differentiate into melanocytes and migrate to the epidermis, potentially altering our understanding of pigmentation disorders.

This review discusses the development of human skin with a focus on desmosomes, noting the challenges of translating animal model findings to humans due to species differences and limited human sample access.

This review summarizes recent advances in understanding the molecular mechanisms of hair follicle formation and discusses potential future clinical applications for treating hair loss and skin tumors, but it reports no new clinical results.