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All Publications

  • When Gut Microbiota Creep into Fat, the Fat Creeps Back. Cell Spencer, S. P., Sonnenburg, J. L. 2020; 183 (3): 589?91


    Ha and colleagues describe a previously unappreciated diversity of microbes in the mesenteric adipose tissue (MAT) surrounding the GI tract. Viable bacteria that are mislocalized from the gut microbiota and metabolically adapted to the MAT contribute to the "creeping fat" of Crohn's disease.

    View details for DOI 10.1016/j.cell.2020.10.008

    View details for PubMedID 33125887

  • Colons or semi-colons: punctuating the regional variation of intestinal microbial-immune interactions. Nature reviews. Gastroenterology & hepatology Culver, R. N., Spencer, S. P., Huang, K. C. 2020

    View details for DOI 10.1038/s41575-020-0302-z

    View details for PubMedID 32322050

  • High Prevalence of Concurrent Gastrointestinal Manifestations in Patients with SARS-CoV-2: Early Experience from California. Gastroenterology Cholankeril, G., Podboy, A., Aivaliotis, V. I., Tarlow, B., Pham, E. A., Spencer, S., Kim, D., Hsing, A., Ahmed, A. 2020

    View details for DOI 10.1053/j.gastro.2020.04.008

    View details for PubMedID 32283101

  • Association of Digestive Symptoms and Hospitalization in Patients With SARS-CoV-2 Infection. The American journal of gastroenterology Cholankeril, G. n., Podboy, A. n., Aivaliotis, V. I., Pham, E. A., Spencer, S. P., Kim, D. n., Ahmed, A. n. 2020; 115 (7): 1129?32


    High rates of concurrent gastrointestinal manifestations have been noted in patients with corona virus disease 2019 (COVID-19); however, the association between these digestive manifestations and need for hospitalization has not been established.This is a retrospective review of consecutive patients diagnosed with COVID-19. A total of 207 patients were identified; 34.5% of patients noted concurrent gastrointestinal symptoms, with 90% of gastrointestinal symptoms being mild.In a multivariate regression model controlled for demographics and disease severity, an increased risk of hospitalization was noted in patients with any digestive symptom (adjusted odds ratio 4.84, 95% confidence interval: 1.68-13.94).The presence of digestive symptoms in COVID-19 is associated with a need for hospitalization.

    View details for DOI 10.14309/ajg.0000000000000712

    View details for PubMedID 32618665

    View details for PubMedCentralID PMC7302101

  • Pursuing Human-Relevant Gut Microbiota-Immune Interactions. Immunity Spencer, S. P., Fragiadakis, G. K., Sonnenburg, J. L. 2019; 51 (2): 225?39


    The gut microbiota is a complex and plastic network of diverse organisms intricately connected with human physiology. Recent advances in profiling approaches of both the microbiota and the immune system now enable a deeper exploration of immunity-microbiota connections. An important next step is to elucidate a human-relevant "map" of microbial-immune wiring while focusing on animal studies to probe a prioritized subset of interactions. Here, we provide an overview of this field's current status and discuss two approaches for establishing priorities for detailed investigation: (1) longitudinal intervention studies in humans probing the dynamics of both the microbiota and the immune system and (2) the study of traditional populations to assess lost features of human microbial identity whose absence may be contributing to the rise of immunological disorders. These human-centered approaches offer a judicious path forward to understand the impact of the microbiota in immune development and function.

    View details for DOI 10.1016/j.immuni.2019.08.002

    View details for PubMedID 31433970

  • The long noncoding RNA Morrbid regulates CD8 T cells in response to viral infection PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA Kotzin, J. J., Iseka, F., Wright, J., Basavappa, M. G., Clark, M. L., Ali, M., Abdel-Hakeem, M. S., Robertson, T. F., Mowel, W. K., Joannas, L., Neal, V. D., Spencer, S. P., Syrett, C. M., Anguera, M. C., Williams, A., Wherry, E., Henao-Mejia, J. 2019; 116 (24): 11916?25


    The transcriptional programs that regulate CD8 T-cell differentiation and function in the context of viral infections or tumor immune surveillance have been extensively studied; yet how long noncoding RNAs (lncRNAs) and the loci that transcribe them contribute to the regulation of CD8 T cells during viral infections remains largely unexplored. Here, we report that transcription of the lncRNA Morrbid is specifically induced by T-cell receptor (TCR) and type I IFN stimulation during the early stages of acute and chronic lymphocytic choriomeningitis virus (LCMV) infection. In response to type I IFN, the Morrbid RNA and its locus control CD8 T cell expansion, survival, and effector function by regulating the expression of the proapoptotic factor, Bcl2l11, and by modulating the strength of the PI3K-AKT signaling pathway. Thus, our results demonstrate that inflammatory cue-responsive lncRNA loci represent fundamental mechanisms by which CD8 T cells are regulated in response to pathogens and potentially cancer.

    View details for DOI 10.1073/pnas.1819457116

    View details for Web of Science ID 000471039700057

    View details for PubMedID 31138702

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