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Different types of stem cells exist within individual skin layers, and they can adapt to damage, transplantation, or tumor growth. These cells are regulated by their environment and genetic factors. Tumor growth is driven by expanding, genetically altered cells, not long-lived mutant stem cells. There's evidence of cancer stem cells in skin tumors. Other cells, bacteria, and genetic factors help maintain balance and contribute to disease progression. A method for growing mini organs from single cells has been developed.

New single-cell analysis techniques are improving our understanding of stem cells and could help in treating diseases.

SHISA6 helps maintain certain stem cells in mouse testes by blocking signals that would otherwise cause them to differentiate.

Deleting the p63 gene in certain cells causes problems in thymus development and severe hair loss in mice.

YAP and TAZ are crucial for skin cell growth and repair.

Adult mice with CBS deficiency show minimal health issues and normal lifespan despite high homocysteine levels.

Eggshells can be used to sustainably and cheaply produce important compounds like glycosaminoglycans.

A DNA aptamer helps promote hair growth by enhancing a key cell growth signal in hair follicle cells.

Targeting amphiregulin may improve treatment for fibrotic diseases and cancer.

Free fatty acids in sebum boost skin's defense against acne by increasing antimicrobial peptides.