New Antibody Drugs Target Disease From Within

InnovationHealthcareNew Antibody Drugs Target Disease From WithinByWilliam A. Haseltine,Contributor.Forbes contributors publish independent expert analyses and insights. William A. Haseltine, Ph.D., covers genomics and regenerative medicineFollow AuthorApr 24, 2026, 09:56am EDT--:-- / --:--This voice experience is generated by AI. Learn more.This voice experience is generated by AI. Learn more.Antibodies can now be re-engineered to work inside cells, not just on their surface, using AI-guided redesign of their binding fragments so they remain stable in the intracellular environment and can directly bind disease-driving proteins such as those involved in neurodegenerative disorders.ACCESS Health InternationalAntibody-based drugs are among the backbone of many drugs available today. Until now, the inside of the cell has been off limits; that barrier is beginning to crack. This is the first of several stories describing how the power of antibodies can be harnessed to treat diseases both inside and outside the cell. These proteins recognize specific structures on the surface of cells, viruses and bacteria, enabling highly precise targeting of disease. Yet their reach has long been limited to the outside of cells. A longstanding goal has been to bring that same precision inside the cell, where many diseases begin. A new study introduces a way to do exactly that, opening the door to therapies aimed at conditions such as Alzheimer’s, Parkinson’s and motor neuron disease. Antibodies are built from combinations of protein components that form a structure capable of recognizing highly specific targets. They are produced inside cells and then transported out, where they bind to structures on the surface of pathogens or affected cells. This natural design makes them highly effective at targeting threats in the bloodstream or surrounding tissues, but not within cells. Many disease-driving processes occur within cells, including the buildup of harmful proteins in neurodegenerativ...