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Stephen M. Hahn

Researcher at University of Pennsylvania

Publications -  226
Citations -  15832

Stephen M. Hahn is an academic researcher from University of Pennsylvania. The author has contributed to research in topics: Radiation therapy & Motexafin lutetium. The author has an hindex of 61, co-authored 225 publications receiving 14147 citations. Previous affiliations of Stephen M. Hahn include United States Department of Commerce.

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Radiation and dual checkpoint blockade activate non-redundant immune mechanisms in cancer

TL;DR: Major tumour regressions are reported in a subset of patients with metastatic melanoma treated with an anti-CTLA4 antibody and radiation and reproduced this effect in mouse models, showing that PD-L1 on melanoma cells allows tumours to escape anti- NCTLA4-based therapy, and the combination of radiation, anti- CTLA4 and anti-PD-L 1 promotes response and immunity through distinct mechanisms.
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Hypoxia is important in the biology and aggression of human glial brain tumors.

TL;DR: A correlation between more rapid tumor recurrence and hypoxia was demonstrated with EF5 binding, but this relationship was not predicted by Eppendorf measurements.
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Inhibition of oxygen-dependent radiation-induced damage by the nitroxide superoxide dismutase mimic, Tempol

TL;DR: Tempol represents a new class of non-thiol-containing radiation protectors, which may be useful in elucidating the mechanism(s) of radiation-induced cellular damage and may have broad applications in protecting against oxidative stress.