Bone-Strength Switch Found: GPR133 May Redefine Osteoporosis Therapy

Scientists identified GPR133 as a receptor that senses mechanical strain and coordinates osteoblasts and osteoclasts, acting as a switch to boost bone formation while reducing bone degradation. In mice, activating GPR133 with the compound AP503 increased bone strength in both healthy and osteoporosis models, suggesting a balanced, potentially safer new approach to osteoporosis treatment, though human trials are needed.