Publications by authors named "Francesca N Raffa"

Dendritic cells (DC) are a promising cell type for cancer vaccines due to their high immunostimulatory capacity. However, improper maturation of DC prior to treatment may account for the limited efficacy of DC vaccine clinical trials. Latent Membrane Protein-1 (LMP1) of Epstein-Barr virus was examined for its ability to mature and activate DC as a gene-based molecular adjuvant for DC vaccines.

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Objective: To evaluate improvement of medical student knowledge of head and neck cancer (HNC) through participation in HNC screening fairs run by medical students.

Study Design: Prospective cohort study of surveys assessing medical students' knowledge of HNC before and after volunteering at screening fairs.

Setting: Four screening fairs held at the University of Miami Miller School of Medicine during Oral, Head and Neck Cancer Awareness Week.

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Article Synopsis
  • This study focuses on a new type of cancer vaccine that uses a specific protein (SPD-gp100-CD40L) to better target tumor-associated antigens to dendritic cells (DC), which play a crucial role in activating the immune response.
  • The SPD-gp100-CD40L protein combines the melanoma tumor antigen gp100 with CD40L, allowing for better aggregation of CD40 on the DC surface, which enhances activation and signaling.
  • In experiments with a melanoma model, the DNA vaccination combining SPD-gp100-CD40L with other plasmids (IL-12p70 and GM-CSF) led to improved survival rates and reduced tumor growth compared to separate expressions of the proteins.
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Adenoviral vectored vaccines have shown considerable promise but could be improved by molecular adjuvants. Ligands in the TNF superfamily (TNFSF) are potential adjuvants for adenoviral vector (Ad5) vaccines based on their central role in adaptive immunity. Many TNFSF ligands require aggregation beyond the trimeric state (multi-trimerization) for optimal biological function.

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CD40 ligand (CD40L, CD154) is a membrane protein that is important for the activation of dendritic cells (DCs) and DC-induced CD8(+) T cell responses. To be active, CD40L must cluster CD40 receptors on responding cells. To produce a soluble form of CD40L that clusters CD40 receptors necessitates the use of a multitrimer construct.

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