Publications by authors named "Alyssa N Obermayer"

Article Synopsis
  • Integrative analysis of expression data is tough due to varying factors like sample processing and RNA quality, making it hard to remove unwanted batch effects effectively.
  • The BatchFLEX Shiny app helps visualize and correct these batch effects using different methods, illustrating their impact on gene expression in immune cells.
  • The tool is accessible on GitHub and Shiny.io, with additional supplementary data available online for further reference.
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Penile squamous cell carcinoma (PSCC) is a rare malignancy in most parts of the world and the underlying mechanisms of this disease have not been fully investigated. About 30-50% of cases are associated with high-risk human papillomavirus (HPV) infection, which may have prognostic value. When PSCC becomes resistant to upfront therapies there are limited options, thus further research is needed in this venue.

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Pathway-level survival analysis offers the opportunity to examine molecular pathways and immune signatures that influence patient outcomes. However, available survival analysis algorithms are limited in pathway-level function and lack a streamlined analytical process. Here we present a comprehensive pathway-level survival analysis suite, PATH-SURVEYOR, which includes a Shiny user interface with extensive features for systematic exploration of pathways and covariates in a Cox proportional-hazard model.

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The networks of transcription factors (TFs) that control intestinal-resident memory CD8 T (T) cells, including multipotency and effector programs, are poorly understood. In this work, we investigated the role of the TF Bcl11b in T cells during infection with using mice with post-activation, conditional deletion of Bcl11b in CD8 T cells. Conditional deletion of Bcl11b resulted in increased numbers of intestinal T cells and their precursors as well as decreased splenic effector and circulating memory cells and precursors.

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Unlabelled: Myeloid sarcoma is a rare condition consisting of extramedullary myeloid blasts found in association with acute myeloid leukemia or, in the absence of bone marrow involvement. We identified an infant with isolated myeloid sarcoma whose bone marrow was negative for involvement by flow cytometry. Sequencing revealed the fusion oncogene CIC-NUTM2A and identified the sarcoma to be clonally evolved from the bone marrow, which carried the fusion despite the absence of pathology.

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Article Synopsis
  • Cancer cells can manage stress by activating a process called unfolded protein responses (UPRs), which helps them survive.
  • Researchers found that blocking a specific part of this process, called PERK, can help the immune system fight tumors better and slow down cancer growth.
  • When PERK is removed from stressed cancer cells, it causes a type of cell death that makes the immune system more active, suggesting that targeting PERK could be a new way to treat cancer.
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