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  • Autologous peripheral blood mononuclear cells (PBMCs) transfected ex vivo with small-interfering ribonucleic acid (siRNA) directed against the E3 ubiquitin ligase casitas B-lineage lymphoma-b gene (Cbl-b), with potential immunoactivating and antineoplastic activities. The Cbl-b gene is silenced ex vivo through the binding of Cbl-b siRNA to Cbl-b mRNA, which prevents the translation of the Cbl-b protein in T-lymphocytes. Upon infusion, the activated, Cbl-b-silenced T-lymphocytes are able to increase the production of cytokines, proliferate and activate the immune system, which leads to cancer cell eradication. Cbl-b, a negative regulator of the immune system, is mutated in a variety of cancer cell types. Its expression is inversely correlated with activation of T-lymphocytes and tumor cell eradication. Check for \'https://www.cancer.gov/about-cancer/treatment/clinical-trials/intervention/C116353\' active clinical trials using this agent. (\'http://ncit.nci.nih.gov/ncitbrowser/ConceptReport.jsp?dictionary=NCI%20Thesaurus&code=C116353\' NCI Thesaurus)
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