PMID- 34066403 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20210605 IS - 2072-6694 (Print) IS - 2072-6694 (Electronic) IS - 2072-6694 (Linking) VI - 13 IP - 9 DP - 2021 May 6 TI - Anti-Angiogenic Properties of Ginsenoside Rg3 Epimers: In Vitro Assessment of Single and Combination Treatments. LID - 10.3390/cancers13092223 [doi] LID - 2223 AB - Tumour angiogenesis plays a key role in tumour growth and progression. The application of current anti-angiogenic drugs is accompanied by adverse effects and drug resistance. Therefore, finding safer effective treatments is needed. Ginsenoside Rg3 (Rg3) has two epimers, 20(S)-Rg3 (SRg3) and 20(R)-Rg3 (RRg3), with stereoselective activities. Using response surface methodology, we optimised a combination of these two epimers for the loop formation of human umbilical vein endothelial cell (HUVEC). The optimised combination (C3) was tested on HUVEC and two murine endothelial cell lines. C3 significantly inhibited the loop formation, migration, and proliferation of these cells, inducing apoptosis in HUVEC and cell cycle arrest in all of the cell lines tested. Using molecular docking and vascular endothelial growth factor (VEGF) bioassay, we showed that Rg3 has an allosteric modulatory effect on vascular endothelial growth factor receptor 2 (VEGFR2). C3 also decreased the VEGF expression in hypoxic conditions, decreased the expression of aquaporin 1 and affected AKT signaling. The proteins that were mostly affected after C3 treatment were those related to mammalian target of rapamycin (mTOR). Eukaryotic translation initiation factor 4E (eIF4E)-binding protein 1 (4E-BP1) was one of the important targets of C3, which was affected in both hypoxic and normoxic conditions. In conclusion, these results show the potential of C3 as a novel anti-angiogenic drug. FAU - Nakhjavani, Maryam AU - Nakhjavani M AUID- ORCID: 0000-0002-5357-7167 AD - Molecular Oncology, Basil Hetzel Institute, The Queen Elizabeth Hospital, Woodville South, SA 5011, Australia. AD - Adelaide Medical School, University of Adelaide, Adelaide, SA 5005, Australia. FAU - Smith, Eric AU - Smith E AUID- ORCID: 0000-0003-2958-3492 AD - Molecular Oncology, Basil Hetzel Institute, The Queen Elizabeth Hospital, Woodville South, SA 5011, Australia. AD - Adelaide Medical School, University of Adelaide, Adelaide, SA 5005, Australia. FAU - Yeo, Kenny AU - Yeo K AUID- ORCID: 0000-0001-5733-0463 AD - Molecular Oncology, Basil Hetzel Institute, The Queen Elizabeth Hospital, Woodville South, SA 5011, Australia. AD - Adelaide Medical School, University of Adelaide, Adelaide, SA 5005, Australia. FAU - Palethorpe, Helen M AU - Palethorpe HM AUID- ORCID: 0000-0003-3803-5113 AD - Centre for Cancer Biology, University of South Australia and SA Pathology, Adelaide, SA 5000, Australia. FAU - Tomita, Yoko AU - Tomita Y AUID- ORCID: 0000-0001-7934-2203 AD - Molecular Oncology, Basil Hetzel Institute, The Queen Elizabeth Hospital, Woodville South, SA 5011, Australia. AD - Adelaide Medical School, University of Adelaide, Adelaide, SA 5005, Australia. AD - Oncology Unit, The Queen Elizabeth Hospital, Woodville South, SA 5011, Australia. FAU - Price, Tim J AU - Price TJ AD - Adelaide Medical School, University of Adelaide, Adelaide, SA 5005, Australia. AD - Oncology Unit, The Queen Elizabeth Hospital, Woodville South, SA 5011, Australia. FAU - Townsend, Amanda R AU - Townsend AR AD - Adelaide Medical School, University of Adelaide, Adelaide, SA 5005, Australia. AD - Oncology Unit, The Queen Elizabeth Hospital, Woodville South, SA 5011, Australia. FAU - Hardingham, Jennifer E AU - Hardingham JE AUID- ORCID: 0000-0001-8277-1199 AD - Molecular Oncology, Basil Hetzel Institute, The Queen Elizabeth Hospital, Woodville South, SA 5011, Australia. AD - Adelaide Medical School, University of Adelaide, Adelaide, SA 5005, Australia. LA - eng GR - Margaret Elcombe/Hospital Research Foundation/ PT - Journal Article DEP - 20210506 PL - Switzerland TA - Cancers (Basel) JT - Cancers JID - 101526829 PMC - PMC8125638 OTO - NOTNLM OT - angiogenesis OT - epimer OT - ginsenoside Rg3 OT - optimisation OT - response surface methodology COIS- The authors declare no conflict of interest. EDAT- 2021/06/03 06:00 MHDA- 2021/06/03 06:01 PMCR- 2021/05/06 CRDT- 2021/06/02 01:16 PHST- 2021/03/11 00:00 [received] PHST- 2021/04/28 00:00 [revised] PHST- 2021/05/04 00:00 [accepted] PHST- 2021/06/02 01:16 [entrez] PHST- 2021/06/03 06:00 [pubmed] PHST- 2021/06/03 06:01 [medline] PHST- 2021/05/06 00:00 [pmc-release] AID - cancers13092223 [pii] AID - cancers-13-02223 [pii] AID - 10.3390/cancers13092223 [doi] PST - epublish SO - Cancers (Basel). 2021 May 6;13(9):2223. doi: 10.3390/cancers13092223.