Posts

The breakthrough in protein misfolding disorders [2/11/25]

  Protein misfolding underlies  numerous  genetic disorders, including Alzheimer’s disease, Parkinson’s disease, and various others. Often, a single amino acid substitution can destabili s e a protein, disrupt its normal function, and compromise intracellular quality control systems. Consequently, correcting such misfolding errors constitutes a central  objective  in contemporary molecular medicine.   A promising therapeutic approach involves pharmacological chaperones small molecules that bind to misfolded or unstable proteins,  facilitating  proper folding and restoring functional activity. Unlike broad-spectrum chemical chaperones, pharmacological chaperones  exhibit  specificity,  frequently  targeting the protein’s active site or ligand-binding domain.   Recently, a significant advancement was reported in Nature Communications, where researchers  identified  a small-molecule compound functioning as a near-un...

The science behind hyperpigmentation [02/11/25]

Skin pigmentation is a complex biological  process  governed by specialised cells know as  melanocytes ,  located  in the basal layer of the epidermis. These cells synthesise melanin, the pigment responsible for the skin,  hair  and e ye colour, and distribute it the surrounding keratinocytes. Melanin serves a protective role by absorbing ultraviolet radiation  whilst  also  neutralising  reactive oxygen species  such as hydrogen peroxide, together both  reducing the chances of skin cancer.   However, when this usually tightly regulated system is dysregulated, hyperpigmentation can occur, characterised with darkened patches of skin. This phenomenon can result in UV exposure, inf lammation, hormonal changes, or skin injury, which all trigger melanocytes to overproduce or unevenly distribute melanin.   The biological basis of Hyperpigmentation   Melanogenesis (melanin synthesis) begins with the amino acid tyro...