PMID- 37514031 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20230801 IS - 1999-4923 (Print) IS - 1999-4923 (Electronic) IS - 1999-4923 (Linking) VI - 15 IP - 7 DP - 2023 Jun 28 TI - Localized Drug Delivery Systems: An Update on Treatment Options for Head and Neck Squamous Cell Carcinomas. LID - 10.3390/pharmaceutics15071844 [doi] LID - 1844 AB - Head and neck squamous cell carcinoma (HNSCC) is one of the most common cancers in the world, with surgery, radiotherapy, chemotherapy, and immunotherapy being the primary treatment modalities. The treatment for HNSCC has evolved over time, due to which the prognosis has improved drastically. Despite the varied treatment options, major challenges persist. HNSCC chemotherapeutic and immunotherapeutic drugs are usually administered systemically, which could affect the patient's quality of life due to the associated side effects. Moreover, the systemic administration of salivary stimulating agents for the treatment of radiation-induced xerostomia is associated with toxicities. Localized drug delivery systems (LDDS) are gaining importance, as they have the potential to provide non-invasive, patient-friendly alternatives to cancer therapy with reduced dose-limiting toxicities. LDDSs involve directly delivering a drug to the tissue or organ affected by the disease. Some of the common localized routes of administration include the transdermal and transmucosal drug delivery system (DDSs). This review will attempt to explore the different treatment options using LDDSs for the treatment of HNSCC and radiotherapy-induced damage and their potential to provide a better experience for patients, as well as the obstacles that need to be addressed to render them successful. FAU - Hariharan, Arvind AU - Hariharan A AUID- ORCID: 0000-0003-2204-2618 AD - McGill Craniofacial Tissue Engineering and Stem Cells Laboratory, Faculty of Dental Medicine and Oral Health Sciences, McGill University, 3640 University Street, Montreal, QC H3A 0C7, Canada. FAU - Tran, Simon D AU - Tran SD AUID- ORCID: 0000-0001-5594-359X AD - McGill Craniofacial Tissue Engineering and Stem Cells Laboratory, Faculty of Dental Medicine and Oral Health Sciences, McGill University, 3640 University Street, Montreal, QC H3A 0C7, Canada. LA - eng PT - Journal Article PT - Review DEP - 20230628 PL - Switzerland TA - Pharmaceutics JT - Pharmaceutics JID - 101534003 PMC - PMC10385385 OTO - NOTNLM OT - head and neck squamous cell carcinoma OT - localized drug delivery OT - nanoparticles OT - penetration enhancers OT - transdermal OT - transmucosal COIS- The authors declare no conflict of interest. EDAT- 2023/07/29 11:44 MHDA- 2023/07/29 11:45 PMCR- 2023/06/28 CRDT- 2023/07/29 01:39 PHST- 2023/04/13 00:00 [received] PHST- 2023/06/12 00:00 [revised] PHST- 2023/06/26 00:00 [accepted] PHST- 2023/07/29 11:45 [medline] PHST- 2023/07/29 11:44 [pubmed] PHST- 2023/07/29 01:39 [entrez] PHST- 2023/06/28 00:00 [pmc-release] AID - pharmaceutics15071844 [pii] AID - pharmaceutics-15-01844 [pii] AID - 10.3390/pharmaceutics15071844 [doi] PST - epublish SO - Pharmaceutics. 2023 Jun 28;15(7):1844. doi: 10.3390/pharmaceutics15071844.