PMID- 30968715 OWN - NLM STAT- MEDLINE DCOM- 20190729 LR - 20200225 IS - 2058-7384 (Electronic) IS - 0394-6320 (Print) IS - 0394-6320 (Linking) VI - 33 DP - 2019 Jan-Dec TI - PCC0208018 exerts antitumor effects by activating effector T cells. PG - 2058738419843366 LID - 10.1177/2058738419843366 [doi] LID - 2058738419843366 AB - Poor prognosis is associated with melanoma due to immunosuppression profiles, suggesting that immune alterations have an important role in the occurrence, growth, and metastasis of melanoma. Here, we found that PCC0208018, a small-molecule compound, enhanced T cell proliferation and activation to release interferon gamma (IFN-gamma) and interleukin-2 (IL-2) without blocking the programmed cell death 1 (PD-1)/programmed cell death-ligand 1 (PD-L1) binding and did not directly affect tumor cell viability in vitro. Furthermore, PCC0208018 increased the phosphorylation of protein kinase B (PKB/AKT) as well as extracellular regulated protein kinases (ERK) in human peripheral blood mononuclear cells (PBMCs) in vitro. The secretion of cytokines induced by PCC0208018 was significantly suppressed by the PI3K inhibitor GDC-0941. In B16-F10 melanoma-harboring mice, PCC0208018 significantly inhibited tumor growth as well as increasing CD3(+), CD3(+)CD4(+), and CD3(+)CD8(+) T cell abundance in tumors without affecting PD-L1 expression. This study showed that PCC0208018 potentially increased PBMCs proliferation and function by activating the phosphatidylinositol 3 kinase (PI3K)/AKT and mitogen-activated protein kinase (MEK)/ERK pathways to exert antitumor effects. FAU - Ge, Minmin AU - Ge M AD - 1 School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, China. FAU - Hu, Zhengping AU - Hu Z AD - 2 School of Public Health and Management, Institute of Toxicology, Binzhou Medical University, Yantai, China. FAU - Chen, Xiao AU - Chen X AUID- ORCID: 0000-0003-4506-0544 AD - 1 School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, China. FAU - Du, Guangying AU - Du G AD - 1 School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, China. FAU - Wang, Hongbo AU - Wang H AD - 1 School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, China. FAU - Liu, Rumeng AU - Liu R AD - 1 School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, China. FAU - Ye, Liang AU - Ye L AD - 2 School of Public Health and Management, Institute of Toxicology, Binzhou Medical University, Yantai, China. FAU - Tian, Jingwei AU - Tian J AUID- ORCID: 0000-0002-3877-0903 AD - 1 School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, China. LA - eng PT - Journal Article PL - England TA - Int J Immunopathol Pharmacol JT - International journal of immunopathology and pharmacology JID - 8911335 RN - 0 (Antineoplastic Agents) MH - Animals MH - Antineoplastic Agents/chemistry/*pharmacology/therapeutic use MH - CHO Cells MH - Cell Proliferation/drug effects/physiology MH - Cells, Cultured MH - Cricetinae MH - Cricetulus MH - Humans MH - Male MH - Melanoma, Experimental/drug therapy/*metabolism MH - Mice MH - Mice, Inbred C57BL MH - Skin Neoplasms/drug therapy/*metabolism MH - T-Lymphocytes/*metabolism MH - Xenograft Model Antitumor Assays PMC - PMC6458668 OTO - NOTNLM OT - PCC0208018 OT - PI3K/AKT pathway OT - cancer immunotherapy OT - melanoma COIS- Declaration of conflicting interests: The author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article. EDAT- 2019/04/11 06:00 MHDA- 2019/07/30 06:00 PMCR- 2019/04/10 CRDT- 2019/04/11 06:00 PHST- 2019/04/11 06:00 [entrez] PHST- 2019/04/11 06:00 [pubmed] PHST- 2019/07/30 06:00 [medline] PHST- 2019/04/10 00:00 [pmc-release] AID - 10.1177_2058738419843366 [pii] AID - 10.1177/2058738419843366 [doi] PST - ppublish SO - Int J Immunopathol Pharmacol. 2019 Jan-Dec;33:2058738419843366. doi: 10.1177/2058738419843366.