Evidence map›Paper›PMID 40446642›Full record

ArticleRedox biology2025

PRPS activity tunes redox homeostasis in Myc-driven lymphoma.

Austin C MacMillan, Bibek Karki, Juechen Yang, Karmela R Gertz, Samantha Zumwalde, Jay G Patel, Maria F Czyzyk-Krzeska, Jarek Meller, John T Cunningham

Abstract read
In one paragraph

Article in Redox biology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

8 citing papers in PubMed.

  1. Divergent evolution of the PRPS enzymes across the tree of life.bioRxiv : the preprint server for biology · 2026
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

9 authors.

Austin C MacMillanDepartment of Cancer Biology, University of Cincinnati College of Medicine, Cincinnati, OH, 45267, USA.
Bibek KarkiDepartment of Cancer Biology, University of Cincinnati College of Medicine, Cincinnati, OH, 45267, USA.
Juechen YangDepartment of Biostatistics, Health Informatics and Data Sciences, University of Cincinnati College of Medicine, Cincinnati, OH, 45267, USA; Division of Biomedical Informatics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, USA.
Karmela R GertzDepartment of Cancer Biology, University of Cincinnati College of Medicine, Cincinnati, OH, 45267, USA.
Samantha ZumwaldeDepartment of Cancer Biology, University of Cincinnati College of Medicine, Cincinnati, OH, 45267, USA.
Jay G PatelDepartment of Cancer Biology, University of Cincinnati College of Medicine, Cincinnati, OH, 45267, USA.
Maria F Czyzyk-KrzeskaDepartment of Cancer Biology, University of Cincinnati College of Medicine, Cincinnati, OH, 45267, USA; Veteran Affairs Medical Center, Department of Veterans Affairs, Cincinnati, OH, 45220, USA; Department of Pharmacology and System Biology, University of Cincinnati College of Medicine, Cincinnati, OH, 45267, USA.
Jarek MellerDepartment of Biostatistics, Health Informatics and Data Sciences, University of Cincinnati College of Medicine, Cincinnati, OH, 45267, USA; Division of Biomedical Informatics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, USA; Institute of Engineering and Technology, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University, Torun, 87-100, Poland.
John T CunninghamDepartment of Cancer Biology, University of Cincinnati College of Medicine, Cincinnati, OH, 45267, USA. Electronic address: cunnijn@ucmail.uc.edu.

Funding

ENVIRONMETAL CARCINOGENESIS AND MUTAGENESIST32ES007250 · NIEHS · UNIVERSITY OF CINCINNATI · PI MILLER, WILLIAM E · 1988 to 2024
$11.9M
Metabolic effects of cooper in renal cancerR01CA287260 · NCI · UNIVERSITY OF CINCINNATI · PI Maria F Czyzyk-Krzeska · 2023 to 2026
$2.2M
Defining the biological roles of PRPS isozymes in normal and diseased settingsR35GM133561 · NIGMS · UNIVERSITY OF CINCINNATI · PI CUNNINGHAM, TOM · 2019 to 2023
$2.1M
Investigating Mechanisms of Deregulated Nucleotide Metabolism in CancerR01CA230904 · NCI · UNIVERSITY OF CINCINNATI · PI CUNNINGHAM, TOM · 2019 to 2023
$1.8M
The Cancer Research Scholars Program (CRSP): Exploring Research Across the Cancer Continuum and into Underserved CommunitiesR25CA261610 · NCI · UNIVERSITY OF CINCINNATI · PI BUTSCHKOVACIC, MELINDA SUE · 2021 to 2025
$1.3M
Training Program in Basic and Translational OncologyT32CA298951 · NCI · UNIVERSITY OF CINCINNATI · PI Vinita Takiar, Susan E Waltz · 2025 to 2026
$776k
BLRD VA I01 BX001110NCI NIH HHS R01 CA230904NCI NIH HHS R01 CA287260NCI NIH HHS R25 CA261610NCI NIH HHS T32 CA298951NIEHS NIH HHS T32 ES007250NIGMS NIH HHS R35 GM133561NIH 5T32ES007250-34
6 · The paper itself

Abstract

Myc hyperactivation coordinately regulates numerous metabolic processes to drive lymphomagenesis. Here, we elucidate the temporal and functional relationships between the medley of pathways, factors, and mechanisms that cooperate to control redox homeostasis in Myc-overexpressing B cell lymphomas. We find that Myc overexpression rapidly stimulates the oxidative pentose phosphate pathway (oxPPP), nucleotide synthesis, and mitochondrial respiration, which collectively steers cellular equilibrium to a more oxidative state. We identify Myc-dependent hyperactivation of the phosphoribosyl pyrophosphate synthetase (PRPS) enzyme as a primary regulator of redox status in lymphoma cells. Mechanistically, we show that genetic inactivation of the PRPS2 isozyme, but not PRPS1, in Myc-driven lymphoma cells leads to elevated NADPH levels and reductive stress-mediated death. Employing a pharmacological screen, we demonstrate how targeting PRPS1 or PRPS2 elicits opposing sensitivity or resistance, respectively, to chemotherapeutic agents affecting the thioredoxin and glutathione network, thus providing a therapeutic blueprint for treating Myc-driven lymphomas.

Indexed as

HomeostasisLymphomaProto-Oncogene Proteins c-mycRibose-Phosphate PyrophosphokinaseAnimalsCell Line, TumorGene Expression Regulation, NeoplasticHumansMiceMitochondriaOxidation-ReductionPentose Phosphate PathwayMYC protein, humanProto-Oncogene Proteins c-mycRibose-Phosphate PyrophosphokinaseEnzymatic regulationMitochondrial respirationOxidative/reductive stressPentose phosphate pathwayPurine metabolismRedox metabolism

Identifiers

PMID40446642
PMCPMC12166406

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.