PMID- 35162988 OWN - NLM STAT- MEDLINE DCOM- 20220408 LR - 20220408 IS - 1422-0067 (Electronic) IS - 1422-0067 (Linking) VI - 23 IP - 3 DP - 2022 Jan 19 TI - GILT Expression in Human Melanoma Cells Enhances Generation of Antigenic Peptides for HLA Class II-Mediated Immune Recognition. LID - 10.3390/ijms23031066 [doi] LID - 1066 AB - Melanoma is an aggressive skin cancer that has become increasingly prevalent in western populations. Current treatments such as surgery, chemotherapy, and high-dose radiation have had limited success, often failing to treat late stage, metastatic melanoma. Alternative strategies such as immunotherapies have been successful in treating a small percentage of patients with metastatic disease, although these treatments to date have not been proven to enhance overall survival. Several melanoma antigens (Ags) proposed as targets for immunotherapeutics include tyrosinase, NY-ESO-1, gp-100, and Mart-1, all of which contain both human leukocyte antigen (HLA) class I and class II-restricted epitopes necessary for immune recognition. We have previously shown that an enzyme, gamma-IFN-inducible lysosomal thiol-reductase (GILT), is abundantly expressed in professional Ag presenting cells (APCs), but absent or expressed at greatly reduced levels in many human melanomas. In the current study, we report that increased GILT expression generates a greater pool of antigenic peptides in melanoma cells for enhanced CD4+ T cell recognition. Our results suggest that the induction of GILT in human melanoma cells could aid in the development of a novel whole-cell vaccine for the enhancement of immune recognition of metastatic melanoma. FAU - Hathaway-Schrader, Jessica D AU - Hathaway-Schrader JD AD - Department of Microbiology and Immunology, Hollings Cancer Center, Children's Research Institute, Medical University of South Carolina, 173 Ashley Avenue, Charleston, SC 29425, USA. FAU - Norton, Duncan AU - Norton D AD - Department of Microbiology and Immunology, Hollings Cancer Center, Children's Research Institute, Medical University of South Carolina, 173 Ashley Avenue, Charleston, SC 29425, USA. FAU - Hastings, Katherine AU - Hastings K AD - Department of Microbiology and Immunology, Hollings Cancer Center, Children's Research Institute, Medical University of South Carolina, 173 Ashley Avenue, Charleston, SC 29425, USA. FAU - Doonan, Bently P AU - Doonan BP AD - Department of Microbiology and Immunology, Hollings Cancer Center, Children's Research Institute, Medical University of South Carolina, 173 Ashley Avenue, Charleston, SC 29425, USA. AD - UF Brain Tumor Immunotherapy Program, Department of Oncology, University of Florida, Gainesville, FL 3260, USA. FAU - Fritz, Shaun Tompkins AU - Fritz ST AD - Department of Microbiology and Immunology, Hollings Cancer Center, Children's Research Institute, Medical University of South Carolina, 173 Ashley Avenue, Charleston, SC 29425, USA. FAU - Bethard, Jennifer R AU - Bethard JR AD - Department of Cell and Molecular Pharmacology and Experimental Therapeutics, Medical University of South Carolina, 173 Ashley Avenue, Charleston, SC 29425, USA. FAU - Blum, Janice S AU - Blum JS AD - Department of Microbiology and Immunology, School of Medicine, Indiana University, Indianapolis, IN 46202, USA. FAU - Haque, Azizul AU - Haque A AUID- ORCID: 0000-0002-6386-9390 AD - Department of Microbiology and Immunology, Hollings Cancer Center, Children's Research Institute, Medical University of South Carolina, 173 Ashley Avenue, Charleston, SC 29425, USA. LA - eng GR - R01 CA129560 and R01 CA129560-S1 to A. Haque/NH/NIH HHS/United States PT - Journal Article DEP - 20220119 PL - Switzerland TA - Int J Mol Sci JT - International journal of molecular sciences JID - 101092791 RN - 0 (Antigens, Neoplasm) RN - 0 (HLA Antigens) RN - 0 (Peptides) RN - 0 (Sulfhydryl Compounds) RN - EC 1.8.- (Oxidoreductases Acting on Sulfur Group Donors) SB - IM MH - Antigen Presentation MH - Antigens, Neoplasm MH - HLA Antigens MH - Humans MH - Lysosomes/metabolism MH - *Melanoma MH - Oxidoreductases Acting on Sulfur Group Donors/metabolism MH - Peptides MH - *Sulfhydryl Compounds PMC - PMC8835040 OTO - NOTNLM OT - Ag presenting cells (APCs) OT - CD4+ T cells OT - cathepsins OT - gamma-IFN-inducible lysosomal thiol-reductase (GILT) OT - human leukocyte antigen (HLA) class II OT - melanoma COIS- The authors have no financial conflict of interest. EDAT- 2022/02/16 06:00 MHDA- 2022/04/09 06:00 PMCR- 2022/01/19 CRDT- 2022/02/15 01:16 PHST- 2021/12/31 00:00 [received] PHST- 2022/01/11 00:00 [accepted] PHST- 2022/02/15 01:16 [entrez] PHST- 2022/02/16 06:00 [pubmed] PHST- 2022/04/09 06:00 [medline] PHST- 2022/01/19 00:00 [pmc-release] AID - ijms23031066 [pii] AID - ijms-23-01066 [pii] AID - 10.3390/ijms23031066 [doi] PST - epublish SO - Int J Mol Sci. 2022 Jan 19;23(3):1066. doi: 10.3390/ijms23031066.