American Association for Cancer Research
15357163mct160285-sup-166047_3_supp_3735569_hgcdh2.pdf (3.22 MB)

Supplemental Figure 5 from Nanoparticle-Based Celecoxib and Plumbagin for the Synergistic Treatment of Melanoma

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journal contribution
posted on 2023-04-03, 16:10 authored by Raghavendra Gowda, Gregory Kardos, Arati Sharma, Sanjay Singh, Gavin P. Robertson

Supplemental Figure 5. H&E Stained sections of organs from mice treated with CelePlum- 777



The Foreman Foundation for Melanoma

The Geltrude Foundation for Melanoma Research

Penn State Melanoma and Skin Cancer Center

J. Roland, Mary R and Elizabeth A Gilbert Memorial Trust

The James Paul Sutton Medical Research Fund

The Penn State Chocolate Tour Cancer Research Fund



Using multiple drugs to kill cancer cells can decrease drug resistance development. However, this approach is frequently limited by the bioavailability and toxicity of the combined agents and delivery at ratios to specific locations that synergistically kill cancer cells. Loading the individual agents into a nanoparticle that releases the drugs at synergizing ratios at a single location is one approach to resolve this concern. Celecoxib and plumbagin are two drugs that were identified from a screen to synergistically kill melanoma cells compared with normal cells. Combined use of these agents by traditional approaches was not possible due to poor bioavailability and toxicologic concerns. This study details the development of a nanoliposomal-based agent containing celecoxib and plumbagin, called CelePlum-777, which is stable and releases these drugs at an optimal ratio for maximal synergistic killing efficacy. CelePlum-777 was more effective at killing melanoma than normal cells and inhibited xenograft melanoma tumor growth by up to 72% without apparent toxicity. Mechanistically, the drug combination in CelePlum-777 led to enhanced inhibition of melanoma cell proliferation mediated by decreasing levels of key cyclins important for cancer cell proliferation and survival, which was not observed with the individual agents. Thus, a novel nanoparticle-based drug has been developed containing celecoxib and plumbagin that lacks toxicity and delivers the agents at a synergistically killing drug ratio to kill cancer cells. Mol Cancer Ther; 16(3); 440–52. ©2016 AACR.