Rare Diseases, Aging, Adolescent, Adult, Aged, Aging, Amino Acid Sequence, Cells, Cultured, Culture Media, Fibroblasts, Glucosephosphate Dehydrogenase, Humans, Hypoxanthine Phosphoribosyltransferase, Middle Aged, Models, Molecular, Phosphogluconate Dehydrogenase, Progeria, Protein Conformation, Proteins, Triose-Phosphate Isomerase, Werner Syndrome