ABSTRACT
OBJECTIVE: To investigate the potential anticancer effect of combretastatin A4 liposomes (SSL-CA4) in destruction of vascular mimicry (VM) in MDA-MB-231 breast cancer cells in vitro. METHODS: The in vitro inhibitory effect and blocking woundhealing effect of SSL-CA4 were investigated. The VM destruction of SSL-CA4 was evaluated in three dimensional matrigel culture model in MDA-MB-231 cells. The in vitro inhibitory test showed that the maxium inhibition ratio of SSL-CA4 on MDA-MB-231 cells was close to 50%. SSL-CA4 blocked the wound-healing of MDA-MB-231 cells, which was similar to free CA4. RESULTS: SSL-CA4 could inhibit the formation of VM in vitro via inhibition on the VM channel indicators including hypoxia-inducible factor (HIF-α), vascular endothelial- cadherin (VE-Cad), and matrix metallopeptidases (MMP-2). The inhibition on indicators of SSL-CA4 was significantly higher than CA4 treatment groups (P <0.05). CONCLUSION: SSL-CA4 has significant anticancer activity via inhibition of VM in MDA-MB-231 cell line.
ABSTRACT
The therapeutic potential of curcumin (Cur) is hampered by its poor aqueous solubility and low bioavailability.The aim of this study was to determine whether Cur nanoemulsions enhance the efficacy of Cur against prostate cancer cells and increase the oral absorption of Cur.Cur nanoemulsions were developed using the self-microemulsifying method and characterized by their morphology,droplet size and zeta potential.The results showed that the cytotoxicity and cell uptake were considerably increased with Cur nanoemulsions compared to free Cur.Cur nanoemulsions exhibited a significantly prolonged biological activity and demonstrated better therapeutic efficacy than free Cur,as assessed by apoptosis and cell cycle studies.In siru single-pass perfusion studies demonstrated higher effective permeability coefficient and absorption rate constant for Cur nanoemulsions than for free Cur.Our study suggested that Cur nanoemulsions can be used as an effective drug delivery system to enhance the anticancer effect and oral bioavailability of Cur.
ABSTRACT
Sixty - eight cancer patients were treated with tumor infiltrating lymphocytes transferred by local injection (local group) , in vein injecition (vein group) and in vein + local injection (vein + local group) respectively. We have analysed the anticancer efficacy and one year survival rate of patients with different transfer ways. It showed that the anticancer efficacy of the local group (85. 7%) was higher than that of vein group (48. 6%), but the one year survival rate of local group (66%) was lower than that of the vein group (80%). Comparative studies on circulating lymphocytes of cancer patients demonstrated that the increase of CD3+, CD8+, CD4+ T lymphocytes of vein group were higer than that of local group, but not different from that of vein + local group. These results suggest the possibility that in vein transfer of TILs could induce immuno -activation of cellular immunity to enhance the one year survial rate.