In a new study led by Yale Cancer Center, researchers have advanced a tumor-targeting and cell penetrating antibody that can deliver payloads to stimulate an immune response to help treat melanoma. The study was presented today at the American Association of Cancer Research (AACR) virtual annual meeting.
"Most approaches rely on direct injection into tumors of ribonucleic acids (RNAs) or other molecules to boost the immune response, but this is not practical in the clinic, especially for patients with advanced cancer," said Peter M. Glazer, MD, PhD, Chair of the Department of Therapeutic Radiology at Yale, Chief of Radiation Oncology at Smilow Cancer Hospital, and senior author of the study. "In this study, we can deliver immune stimulatory RNA to tumors in vivo following systemic administration."
RNA is a nucleic acid present in all living cells. Its principal role is to act as a messenger to carry instructions from DNA to control the synthesis of proteins, although in some viruses RNA rather than DNA carry the genetic information. In this study, using mice with melanoma tumors, members of the Glazer lab at Yale achieved almost complete tumor suppression upon intravenous injection of antibody/RNA complexes.
"These results are very encouraging," added Glazer. "They highlight a novel approach for the systemic delivery of immunostimulatory RNAs in a targeted manner that may one day offer therapeutic advantages for difficult to treat cancers like melanoma, over current approaches."
The lead author of the study from Yale is Elias Quijano, and a co-author, also from Yale, is Yanfeng Liu, along with Bruce Turner and Stephen Squinto of Gennea Bio.
About Yale Cancer Center and Smilow Cancer Hospital
Yale Cancer Center (YCC) is one of only 51 National Cancer Institute-designated comprehensive cancer centers in the nation and the only such center in Connecticut. Cancer treatment for patients is available at Smilow Cancer Hospital through 13 multidisciplinary teams and at 15 Smilow Cancer Hospital Care Centers in Connecticut and Rhode Island. Comprehensive cancer centers play a vital role in the advancement of the NCI's goal of reducing morbidity and mortality from cancer through scientific research, cancer prevention, and innovative cancer treatment.