Abstract:
:Curcumin, a yellow pigment present in the spice turmeric (Curcuma longa), has been linked with multiple beneficial activities, but its optimum potential is limited by poor bioavailability, in part due to the lack of solubility in aqueous solvents. To overcome the solubility problem, we have recently developed a novel cyclodextrin complex of curcumin (CDC) and examined here this compound for anti-inflammatory and antiproliferative effects. Using the electrophoretic mobility shift assay, we found that CDC was more active than free curcumin in inhibiting TNF-induced activation of the inflammatory transcription factor NF-kappaB and in suppressing gene products regulated by NF-kappaB, including those involved in cell proliferation (cyclin D1), invasion (MMP-9), and angiogenesis (VEGF). CDC was also more active than free curcumin in inducing the death receptors DR4 and DR5. Annexin V staining, cleavage of caspase-3 and PARP, and DNA fragmentation showed that CDC was more potent than free curcumin in inducing apoptosis of leukemic cells. Antiproliferative assays also demonstrated that CDC was more active than free curcumin in suppressing proliferation of various cancer cell lines. The cyclodextrin vehicle had no effect in these assays. Compared with free curcumin, CDC had a greater cellular uptake and longer half-life in the cells. Overall we demonstrated that CDC had superior attributes compared with free curcumin for cellular uptake and for antiproliferative and anti-inflammatory activities.
journal_name
Biochem Pharmacoljournal_title
Biochemical pharmacologyauthors
Yadav VR,Prasad S,Kannappan R,Ravindran J,Chaturvedi MM,Vaahtera L,Parkkinen J,Aggarwal BBdoi
10.1016/j.bcp.2010.06.022subject
Has Abstractpub_date
2010-10-01 00:00:00pages
1021-32issue
7eissn
0006-2952issn
1873-2968pii
S0006-2952(10)00456-9journal_volume
80pub_type
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