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Effects of clinically relevant radionuclides on the activation of a type I interferon response by radiopharmaceuticals in syngeneic murine tumor models

by Kim, KyungMann , Kerr, Caroline P , Bates, Amber M , Jagodinsky, Justin C , Engle, Jonathan W , Morris, Zachary S , Sheehan-Klenk, Julia , Hernandez, Reinier , Powers, Maria , Zangl, Luke M , Jin, Won Jong , Clark, Paul A , Choi, Cynthia , Massey, Christopher F , Weichert, Jamey P , Nguyen, Thanh Phuong T , Sriramaneni, Raghava N , Ferreira, Carolina A , Adam, David P , Olson, Aeli P , Grudzinski, Joseph J , Pinchuk, Anatoly N , Shea, Amanda G , Aluicio-Sarduy, Eduardo , Lin, Wilson , Hyun, Meredith , Rojas, Hansel Comas , Bednarz, Bryan P , Kwon, Ohyun

in Cancer Biology

2024

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Effects of clinically relevant radionuclides on the activation of a type I interferon response by radiopharmaceuticals in syngeneic murine tumor models

in Cancer Biology

2024

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Effects of clinically relevant radionuclides on the activation of a type I interferon response by radiopharmaceuticals in syngeneic murine tumor models

in Cancer Biology

2024

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Journal Article

Effects of clinically relevant radionuclides on the activation of a type I interferon response by radiopharmaceuticals in syngeneic murine tumor models

Kim, KyungMann,

Kerr, Caroline P,

Bates, Amber M,

Jagodinsky, Justin C,

Engle, Jonathan W,

Morris, Zachary S,

Sheehan-Klenk, Julia,

Hernandez, Reinier,

Powers, Maria,

Zangl, Luke M,

Jin, Won Jong,

Clark, Paul A,

Choi, Cynthia,

Massey, Christopher F,

Weichert, Jamey P,

Nguyen, Thanh Phuong T,

Sriramaneni, Raghava N,

Ferreira, Carolina A,

Adam, David P,

Olson, Aeli P,

Grudzinski, Joseph J,

Pinchuk, Anatoly N,

Shea, Amanda G,

Aluicio-Sarduy, Eduardo,

Lin, Wilson,

Hyun, Meredith,

Rojas, Hansel Comas,

Bednarz, Bryan P,

Kwon, Ohyun

2024

Overview

Radiopharmaceutical therapies (RPT) activate a type I interferon (IFN1) response in tumor cells. We hypothesized that the timing and amplitude of this response varies by isotope. We compared equal doses delivered by Y, Lu, and Ac as unbound radionuclides and when chelated to NM600, a tumor-selective alkylphosphocholine. Response in murine MOC2 head and neck carcinoma and B78 melanoma was evaluated by qPCR and flow cytometry. Therapeutic response to Ac-NM600+anti-CTLA4+anti-PD-L1 immune checkpoint inhibition (ICI) was evaluated in wild-type and stimulator of interferon genes knockout (STING KO) B78. The timing and magnitude of IFN1 response correlated with radionuclide half-life and linear energy transfer. CD8 /Treg ratios increased in tumors 7 days after Y- and Lu-NM600 and day 21 after Ac-NM600. Ac-NM600+ICI improved survival in mice with WT but not with STING KO tumors, relative to monotherapies. Immunomodulatory effects of RPT vary with radioisotope and promote STING-dependent enhanced response to ICIs in murine models. This study describes the time course and nature of tumor immunomodulation by radiopharmaceuticals with differing physical properties.

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Publisher

Cold Spring Harbor Laboratory

Subject

Cancer Biology