Kaempferol 7 o rhamnoside

Oseltamivir carboxylate was purchased from AOBIOUS Inc. (Gloucester, MA, USA). Gallic and protocatechuic acids were purchased from Sigma-Aldrich (St. Louis, MO, USA). Corilagin, GN, ellagic acid, kaempferitrin, kaempferol-7-O-rhamnoside, quercetin, and kaempferol were purchased from ChemFaces (Wuhan, China), and antibodies targeting influenza proteins (PA, HA, NA, NP, PB1, PB2, M1, M2, NS-1, and NS-2) were procured from GeneTex (San Antonio, TX, USA). Anti-β-actin was purchased from Cell Signaling Technology (Cell Signaling Technology, Boston, MA, USA).

RPMI 1640 medium (#SH30027.01), Dulbecco’s Modified Eagle’s Medium (DMEM, #SH30243.01), F-12 Kaighn’s Modification (#SH30526.01) medium, fetal bovine serum (FBS, #SH30084.3), 0.25% trypsin-EDTA, and penicillin-streptomycin (#SV30010) were purchased from Hyclone (South Logan, UT, USA). The human PD-1/PD-L1 Inhibitor Screening Assay Kit (#72005), human PD-1 (hPD-1) neutralizing antibody (#71120), and human PD-L1 (hPD-L1) neutralizing antibody (#71213) were purchased from BPS Bioscience (San Diego, CA, USA). Kaempferitrin (KI), kaempferol (KO), and kaempferol 7-O-rhamnoside (KR) were purchased from ChemFaces (Wuhan, Hubei, China). PD-1/PD-L1 Inhibitor C1 (M60312-2s) was purchased from Xcess Biosciences Inc. (San Diego, CA, USA). The PD-1/PD-L1 Blockade Bioassay Kit was purchased from Promega (Fitchburg, WI, USA).