Author

Greg Poffenberger

Vanderbilt University Medical CenterORCID 0009-0006-6374-0091Unclaimed ORCID profile · follow to get notified of new preprints

Biology Disciplines

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Cell Biology· 1 Physiology· 1

Signature Assays, Organisms & Methods

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Research Focus:cell type annotation· 2 Approach:experimental assay· 2 Organism:human· 2 Organism:mouse· 2 Research Focus:cell signaling & trafficking· 1 Research Focus:development & morphogenesis· 1 Research Focus:differential expression· 1 Assay:proteomics· 1

Frequent Co-Authors

Alvin C. PowersiD· 2 shared Anna Marie R SchornackiD· 2 shared Chunhua DaiiD· 2 shared E. Danielle DeaniD· 2 shared Erick SpearsiD· 2 shared Jade E. StanleyiD· 2 shared Katelyn Sellick· 2 shared Katie Colbert CoateiD· 2 shared

Activity by Year

2024-2026 · peak 1/yr

Co-Author Collaboration Network

10 top collaborators · 45 mutual co-author links

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2 shared papersPhysiology

Alvin C. PowersORCID

Mutual co-authors in cluster

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2 papers

Recent·Most cited

PhysiologyJournal of Clinical InvestigationPeer-reviewedJun 14, 2026

Pancreatic islet α cell function and proliferation requires the arginine transporter SLC7A2

Erick Spears, Jade E. Stanley, Matthew Shou…·E. Danielle Dean

This study identifies SLC7A2 as essential for α cell proliferation and glucagon secretion, linking arginine transport to metabolic regulation and HbA1c variation.

17 citationstop 1%

mousehuman

𝕏 PostBluesky

Cell BiologyMolecular MetabolismPeer-reviewedOct 19, 2024

Interruption of glucagon signaling augments islet non-alpha cell proliferation in SLC7A2- and mTOR-dependent manners

Katie Colbert Coate, Chunhua Dai, A. K. Singh…·E. Danielle Dean

This study shows that blocking glucagon signaling increases non-alpha cell proliferation in islets, dependent on SLC7A2 and mTORC1, across multiple species and models.

6 citations

zebrafishmouse

𝕏 PostBluesky