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Single injection may revolutionize melanoma treatment

Date:
August 22, 2013
Source:
Moffitt Cancer Center
Summary:
A new study could offer hope to people with melanoma, the deadliest form of skin cancer. Researchers are investigating whether an injectable known as PV-10 can shrink tumors and reduce the spread of cancer. PV-10 is a solution developed from Rose Bengal, a water-soluble dye commonly used to stain damaged cells in the eye. Early clinical trials show PV-10 can boost immune response in melanoma tumors, as well as the blood stream.

A new study at Moffitt Cancer Center could offer hope to people with melanoma, the deadliest form of skin cancer. Researchers are investigating whether an injectable known as PV-10 can shrink tumors and reduce the spread of cancer. PV-10 is a solution developed from Rose Bengal, a water-soluble dye commonly used to stain damaged cells in the eye. Early clinical trials show PV-10 can boost immune response in melanoma tumors, as well as the blood stream.

"Various injection therapies for melanoma have been examined over the past 40 years, but few have shown the promising results we are seeing with PV-10," said Shari Pilon-Thomas, Ph.D., assistant member of Moffitt's Immunology Program.

In the initial study, researchers injected a single dose of PV-10 into mice with melanoma. The result was a significant reduction in the skin cancer lesions, as well as a sizable reduction in melanoma tumors that had spread to the lungs. The researchers said the dye solution appeared to produce a robust anti-tumor immune response and may be safer than existing immunological agents.

"We are currently in the middle of our first human clinical trial of PV-10 for advanced melanoma patients. In addition to monitoring the response of injected melanoma tumors, we are also measuring the boost in the anti-tumor immune cells of patients after injection," explained Amod A. Sarnaik, M.D., assistant member of Moffitt's Cutaneous Oncology Program.

The initial study appears in PLOS ONE. It was supported by a sponsored research agreement with Provectus Pharmaceuticals, Inc., developer of PV-10.


Story Source:

The above story is based on materials provided by Moffitt Cancer Center. Note: Materials may be edited for content and length.


Journal Reference:

  1. Paul Toomey, Krithika Kodumudi, Amy Weber, Lisa Kuhn, Ellen Moore, Amod A. Sarnaik, Shari Pilon-Thomas. Intralesional Injection of Rose Bengal Induces a Systemic Tumor-Specific Immune Response in Murine Models of Melanoma and Breast Cancer. PLoS ONE, 2013; 8 (7): e68561 DOI: 10.1371/journal.pone.0068561

Cite This Page:

Moffitt Cancer Center. "Single injection may revolutionize melanoma treatment." ScienceDaily. ScienceDaily, 22 August 2013. <www.sciencedaily.com/releases/2013/08/130822194145.htm>.
Moffitt Cancer Center. (2013, August 22). Single injection may revolutionize melanoma treatment. ScienceDaily. Retrieved July 22, 2014 from www.sciencedaily.com/releases/2013/08/130822194145.htm
Moffitt Cancer Center. "Single injection may revolutionize melanoma treatment." ScienceDaily. www.sciencedaily.com/releases/2013/08/130822194145.htm (accessed July 22, 2014).

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