We embarked on autologous dendric cells (DC) transplantation as an adjuvant therapy with chemotherapy in a pleomorphic lung carcinoma patient. DC were isolated from PBMC and primed with the autologous tumor lysate. No adverse event was noted in DC transplantation. DC administration also correlated with immunomodulation, as evidenced by an approximately 5-fold increase in serum interferon gamma after 2 months. The utility of autologous DC transplantation may offer a clinical benefit with virtually no adverse event.

Human ; Male ; Adult ; Interferon-gamma ; Leukocytes, Mononuclear ; Immunomodulation ; Neoplasms ; Transplantation, Autologous ; Combined Modality Therapy

The ongoing coronavirus disease (COVID-19) pandemic, caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), is causing major damages in health and economies worldwide. The development of safe and effective vaccines for COVID-19 is of utmost importance yet none have been licensed to date. One of the strategies for vaccine development utilizes dendritic cells which express class I and class II human leukocyte antigen (HLA) molecules. These HLA molecules present the antigenic peptides to T cells which mediate the immune response. Thus, the study aimed to identify SARS-CoV-2 peptides with potential binding to HLA class I and class II molecules using different bioinformatics tools. SYFPEITHI and IEDB were used to predict epitopes for the most common HLA class I and II alleles among Filipinos. The top predicted epitopes were subjected to de novo and template-based molecular docking. Then, binding energies of the generated peptide-HLA complexes to putative T cell receptors were predicted using a homology modeling approach. Several predicted epitopes showed promising MHC and TCR binding, although results varied considerably between the prediction methods used. In particular, the results of de novo and template-based docking methods did not coincide, the latter of which generated complexes that more closely resemble typical peptide-HLA complexes. The results of this study will be validated by the next stage of the vaccine development project which is the in vitro assessment of the T cell responses elicited by dendritic cells pulsed with the candidate peptides.
COVID-19 ; SARS-CoV-2 ; Vaccines ; Molecular Docking Simulation