HOW FEMALE ONLINE BUSINESSES AND BRANDS ARE USING INSTAGRAM STORIES

Instagram is one of the newest forms of social media that impacts its audience on a visual level, since the content is centered on photos and videos. Their newest feature, Instagram stories, is temporary videos and/or photos strung together to form a gallery, which has been compared to Snapchat’s version of live stories. Instagram stories offer a unique opportunity for businesses to take advantage of the temporary, 24-hour platform that shows specific frame-by-frame analytics that help create efficient and compelling content to repost permanently that helps organic search engine optimization. As a cost-effective means of advertising, early adopter large and small brands alike have responded and are setting the tone in terms of how Instagram stories are used to attract their audiences. This paper studied 222 Instagram story posts made by 81 different female online business and brand accounts over a one-week time period in order to observe the common themes of posts as well as compare the structure of their posts to the Brand–Consumer Storytelling Theory. The observed results presented that there were 15 common themes; in addition, the general flow of events were presented as an episodic structure, characterized by several indices that can help a story be more relatable to the viewers when it comes to using their own past experiences to relate to the story. Adviser: Sriyani Tidbal

HOW FEMALE ONLINE BUSINESSES AND BRANDS ARE USING INSTAGRAM STORIES

Instagram is one of the newest forms of social media that impacts its audience on a visual level, since the content is centered on photos and videos. Their newest feature, Instagram stories, is temporary videos and/or photos strung together to form a gallery, which has been compared to Snapchat’s version of live stories. Instagram stories offer a unique opportunity for businesses to take advantage of the temporary, 24-hour platform that shows specific frame-by-frame analytics that help create efficient and compelling content to repost permanently that helps organic search engine optimization. As a cost-effective means of advertising, early adopter large and small brands alike have responded and are setting the tone in terms of how Instagram stories are used to attract their audiences. This paper studied 222 Instagram story posts made by 81 different female online business and brand accounts over a one-week time period in order to observe the common themes of posts as well as compare the structure of their posts to the Brand–Consumer Storytelling Theory. The observed results presented that there were 15 common themes; in addition, the general flow of events were presented as an episodic structure, characterized by several indices that can help a story be more relatable to the viewers when it comes to using their own past experiences to relate to the story. Adviser: Sriyani Tidbal

31st Annual Meeting and Associated Programs of the Society for Immunotherapy of Cancer (SITC 2016) : part two

Background The immunological escape of tumors represents one of the main ob- stacles to the treatment of malignancies. The blockade of PD-1 or CTLA-4 receptors represented a milestone in the history of immunotherapy. However, immune checkpoint inhibitors seem to be effective in specific cohorts of patients. It has been proposed that their efficacy relies on the presence of an immunological response. Thus, we hypothesized that disruption of the PD-L1/PD-1 axis would synergize with our oncolytic vaccine platform PeptiCRAd. Methods We used murine B16OVA in vivo tumor models and flow cytometry analysis to investigate the immunological background. Results First, we found that high-burden B16OVA tumors were refractory to combination immunotherapy. However, with a more aggressive schedule, tumors with a lower burden were more susceptible to the combination of PeptiCRAd and PD-L1 blockade. The therapy signifi- cantly increased the median survival of mice (Fig. 7). Interestingly, the reduced growth of contralaterally injected B16F10 cells sug- gested the presence of a long lasting immunological memory also against non-targeted antigens. Concerning the functional state of tumor infiltrating lymphocytes (TILs), we found that all the immune therapies would enhance the percentage of activated (PD-1pos TIM- 3neg) T lymphocytes and reduce the amount of exhausted (PD-1pos TIM-3pos) cells compared to placebo. As expected, we found that PeptiCRAd monotherapy could increase the number of antigen spe- cific CD8+ T cells compared to other treatments. However, only the combination with PD-L1 blockade could significantly increase the ra- tio between activated and exhausted pentamer positive cells (p= 0.0058), suggesting that by disrupting the PD-1/PD-L1 axis we could decrease the amount of dysfunctional antigen specific T cells. We ob- served that the anatomical location deeply influenced the state of CD4+ and CD8+ T lymphocytes. In fact, TIM-3 expression was in- creased by 2 fold on TILs compared to splenic and lymphoid T cells. In the CD8+ compartment, the expression of PD-1 on the surface seemed to be restricted to the tumor micro-environment, while CD4 + T cells had a high expression of PD-1 also in lymphoid organs. Interestingly, we found that the levels of PD-1 were significantly higher on CD8+ T cells than on CD4+ T cells into the tumor micro- environment (p < 0.0001). Conclusions In conclusion, we demonstrated that the efficacy of immune check- point inhibitors might be strongly enhanced by their combination with cancer vaccines. PeptiCRAd was able to increase the number of antigen-specific T cells and PD-L1 blockade prevented their exhaus- tion, resulting in long-lasting immunological memory and increased median survival