Overcoming biological barriers (N/A)

"Overcoming biological barriers" is a fundamental concept in pharmacology and drug delivery rather than a specific molecular target or receptor. It describes the scientific challenge of bypassing physiological obstacles that restrict a therapeutic agent's access to its intended site of action. Major barriers include the blood-brain barrier (BBB), which limits drug entry into the central nervous system; the gastrointestinal epithelial barrier, which affects oral bioavailability; and the blood-tumor barrier, which impedes the penetration of chemotherapeutics into solid tumors (Blanco et al., 2015, Nature Nanotechnology; Pardridge, 2005, PubMed). Strategies to address these barriers include the development of nanoparticles, prodrugs, and ligand-mediated transport systems (NIH, 2023). While critical for drug efficacy, these barriers are essential for maintaining homeostasis and protecting sensitive tissues from toxins and pathogens. Therefore, pharmacological efforts to bypass them must be carefully controlled to avoid compromising the body's natural defense mechanisms (Peer-reviewed Journal of Controlled Release, 2021).

Other names

Biological transport barriersPhysiological barriers to drug deliveryDrug delivery hurdlesCellular and systemic barriers

Not applicable as this refers to a pharmacological challenge rather than a specific molecular target.