PMID- 35400284 OWN - NLM STAT- MEDLINE DCOM- 20220412 LR - 20221207 IS - 2165-5987 (Electronic) IS - 2165-5979 (Print) IS - 2165-5979 (Linking) VI - 13 IP - 4 DP - 2022 Apr TI - Matrine Combined with Mammalian Target of Rapamycin Inhibitor Enhances Anti-Tumor Efficacy of dendritic cell Vaccines in hepatocellular carcinoma. PG - 9274-9283 LID - 10.1080/21655979.2022.2037855 [doi] AB - Dendritic cells (DCs), as the most important antigen-presenting cells, play a crucial role in T cell activation. The latest research showed that inhibition of the mammalian target of rapamycin (mTOR) could enhance DCs maturation, promoting antigen presentation. Matrine has been identified as one of the key alkaloids isolated from the roots of Sophora flavescens. In present study, we combined matrine and mTOR inhibitor KU0063794 to observe the DCs functions, especially the antigen presentation ability. DCs were activated by phosphate-buffered saline (PBS), lipopolysaccharide (LPS), LPS+KU0063794, LPS+Matrine, and LPS+KU0063794+Matrine. The surface markers in DCs, proliferation of T cells and cytokines were detected by flow cytometry, cell counting kit-8 (CCK-8) and enzyme-linked immunosorbent assay (ELISA), respectively. The lactate dehydrogenase (LDH) release test was used to detect the antitumor efficacy. The tumor growth curves were plotted by calculating tumor volume. The apoptosis was detected by Terminal-deoxynucleoitidyl Transferase-Mediated Nick End Labeling (TUNEL) method. Matrine combined with KU0063794 could enhance the maturity of DCs, T cells proliferation and cytokines secretion (P < 0.05). The cytotoxic T lymphocytes (CTL) killing efficacy of LPS+KU0063794+Matrine group was higher than other groups (P < 0.05). In vivo, the tumor weights and volumes in LPS+KU0063794+Matrine group were lower than other groups. The detections of tumor apoptosis were increased in LPS+KU0063794+Matrine group (P < 0.05). DC vaccine with mTOR inhibitor and matrine could significantly improve the efficacy of antitumor immunity in vitro and vivo. These findings illustrated that mTOR inhibitor and matrine, as two immunomodulators, could enhance DC activation and differentiation. FAU - Zhou, Ning AU - Zhou N AD - Department of Gastroenterology, The First People's Hospital of Lanzhou City, Lanzhou Gansu, China. AD - Key Laboratory of Digestive System Tumors of Gansu Province, Lanzhou Gansu, China. FAU - Li, Sheng AU - Li S AD - Department of Gastroenterology, The First People's Hospital of Lanzhou City, Lanzhou Gansu, China. FAU - Zhang, Fan AU - Zhang F AD - Key Laboratory of Digestive System Tumors of Gansu Province, Lanzhou Gansu, China. FAU - Chen, Cong AU - Chen C AD - Key Laboratory of Digestive System Tumors of Gansu Province, Lanzhou Gansu, China. FAU - Li, Yumin AU - Li Y AD - Key Laboratory of Digestive System Tumors of Gansu Province, Lanzhou Gansu, China. LA - eng PT - Journal Article PL - United States TA - Bioengineered JT - Bioengineered JID - 101581063 RN - 0 (Alkaloids) RN - 0 (Cytokines) RN - 0 (Lipopolysaccharides) RN - 0 (Quinolizines) RN - EC 2.7.11.1 (TOR Serine-Threonine Kinases) RN - W36ZG6FT64 (Sirolimus) RN - 0 (Matrines) SB - IM MH - *Alkaloids/pharmacology MH - *Carcinoma, Hepatocellular/drug therapy/pathology MH - Cytokines MH - Dendritic Cells MH - Humans MH - Lipopolysaccharides MH - *Liver Neoplasms/drug therapy/pathology MH - Quinolizines MH - Sirolimus MH - TOR Serine-Threonine Kinases MH - Matrines PMC - PMC9161910 OTO - NOTNLM OT - CTL OT - Huh7 cells OT - Matrine OT - dendritic cells OT - mTOR inhibitor OT - nude mice OT - vaccine COIS- No potential conflict of interest was reported by the authors. EDAT- 2022/04/12 06:00 MHDA- 2022/04/13 06:00 PMCR- 2022/04/10 CRDT- 2022/04/11 05:23 PHST- 2022/04/11 05:23 [entrez] PHST- 2022/04/12 06:00 [pubmed] PHST- 2022/04/13 06:00 [medline] PHST- 2022/04/10 00:00 [pmc-release] AID - 2037855 [pii] AID - 10.1080/21655979.2022.2037855 [doi] PST - ppublish SO - Bioengineered. 2022 Apr;13(4):9274-9283. doi: 10.1080/21655979.2022.2037855.