Mitochondrial function in keratinocytes

Mitochondrial function in keratinocytes refers to the collective bioenergetic and metabolic activities of mitochondria within the primary cells of the epidermis, which are fundamental for maintaining skin integrity and barrier function (Sreedhar et al., 2020, Cell Death & Disease). These organelles are not only responsible for ATP production via oxidative phosphorylation but also play a decisive role in regulating keratinocyte differentiation, calcium signaling, and apoptosis (Eckhart and Mildner, 2018, Journal of Investigative Dermatology). Mitochondrial dysfunction, often resulting from UV-induced DNA damage and oxidative stress, is a hallmark of skin aging and is implicated in the pathophysiology of chronic inflammatory skin diseases like psoriasis and atopic dermatitis (Biedermann et al., 2019, Nutrients). While not a single molecular target, pharmacological modulation of mitochondrial pathways—using agents like Coenzyme Q10 or Niacinamide—aims to restore metabolic efficiency and reduce the accumulation of harmful reactive oxygen species (Prahl et al., 2008, Journal of Investigative Dermatology). Consequently, this target represents a broad physiological process involving a multitude of enzymes and transporters rather than a discrete, druggable protein.

Other names

Keratinocyte mitochondrial bioenergeticsMitochondrial respiration in skinEpidermal mitochondrial functionMitochondrial activity in keratinocytes

Pharmacological agents typically act by enhancing electron transport chain efficiency, scavenging mitochondrial reactive oxygen species, or stimulating mitochondrial biogenesis through pathways such as AMPK and SIRT1 activation.