Evidence map›Paper›PMID 41851305›Full record

ArticleNature biotechnology2026

Sustained nitric oxide production by engineered E. coli remodels the tumor microenvironment and potentiates immunotherapy.

Shuyu Xu, Tianjiao Zhang, Yang Song, Mengxin Wang, Ruiqi Wu, Mofan Li, Haonan Wang, Xinxin Xie, Qingfeng Chen, Xiaotu Ma and 1 more

Erratum issuedAbstract read
PubMed Publisher
In one paragraph

Article in Nature biotechnology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. 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. Article
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  4. Review
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  8. Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

11 authors.

Shuyu Xu *State Key Laboratory of Vascular Homeostasis and Remodeling, Department of Ultrasound, Peking University Third Hospital, Beijing, China.
Tianjiao Zhang *State Key Laboratory of Vascular Homeostasis and Remodeling, Department of Ultrasound, Peking University Third Hospital, Beijing, China.
Yang SongDepartment of Ultrasound Medicine, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China.
Mengxin WangState Key Laboratory of Vascular Homeostasis and Remodeling, Department of Ultrasound, Peking University Third Hospital, Beijing, China.
Ruiqi WuState Key Laboratory of Vascular Homeostasis and Remodeling, Department of Ultrasound, Peking University Third Hospital, Beijing, China.
Mofan LiState Key Laboratory of Vascular Homeostasis and Remodeling, Department of Ultrasound, Peking University Third Hospital, Beijing, China.
Haonan WangState Key Laboratory of Vascular Homeostasis and Remodeling, Department of Ultrasound, Peking University Third Hospital, Beijing, China.
Xinxin XieState Key Laboratory of Vascular Homeostasis and Remodeling, Department of Ultrasound, Peking University Third Hospital, Beijing, China.
Qingfeng ChenInstitute of Molecular and Cell Biology, Agency for Science, Technology and Research, Singapore, Singapore.ORCID http://orcid.org/0000-0001-6437-1271
Xiaotu MaState Key Laboratory of Vascular Homeostasis and Remodeling, Department of Ultrasound, Peking University Third Hospital, Beijing, China. maxiaotu@bjmu.edu.cn.ORCID http://orcid.org/0009-0005-0188-6119
Xiaolong LiangState Key Laboratory of Vascular Homeostasis and Remodeling, Department of Ultrasound, Peking University Third Hospital, Beijing, China. xiaolong_liang@bjmu.edu.cn.ORCID http://orcid.org/0000-0001-7299-3329

Funding

Natural Science Foundation of Beijing Municipality (Beijing Natural Science Foundation) JQ22024Natural Science Foundation of Beijing Municipality (Beijing Natural Science Foundation) L232087Peking University Third Hospital (PUTH) BYSYZD2019018, jyzc2018-02, BYSY2015023
6 · The paper itself

Abstract

Tumor immunotherapy is often compromised by an immunosuppressive tumor microenvironment (TME) characterized by abnormal vasculature and exhausted T cells. Here, given the role of nitric oxide (NO) in favorably remodeling the TME, we engineered Escherichia coli Nissle 1917 (ECN) with a synthetic arginine-NO circuit (ECN-NO) that modifies the arginine synthesis pathway to constitutively synthesize arginine and enable sustained NO production. Specifically, deletion of the arginine repressor ArgR relieved feedback inhibition of arginine biosynthesis, whereas co-expression of argininosuccinate synthase and lyase (ArgG/ArgH), together with Bacillus subtilis nitric oxide synthase (BsNOS), enabled sustained NO production through enhanced arginine regeneration. Intratumoral colonization of ECN-NO significantly enhanced the antitumor efficacy of anti-programmed cell death ligand 1 (αPD-L1) immunotherapy, resulting in durable tumor regression across multiple solid tumor mouse models. Mechanistically, ECN-NO induced vascular normalization and dendritic cell recruitment, alleviated tumor immunosuppression and synergized with αPD-L1 to expand functional CD8

Identifiers

What Socratic holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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 Socratic graph.