Evidence map›Paper›PMID 27246354›Full record

ArticleBMC cancer2016

L-Arginine supplementation inhibits the growth of breast cancer by enhancing innate and adaptive immune responses mediated by suppression of MDSCs in vivo.

Yu Cao, Yonghui Feng, Yanjun Zhang, Xiaotong Zhu, Feng Jin

Open access · goldAbstract read
In one paragraph

Article in BMC cancer, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 54 papers.

0numbers the graph read from it
0cells of the map it votes in
54citing papers in PubMed
3.6field-weighted citation impact, top 7% of its field
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

54 citing papers in PubMed, 131 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 2 institutions in 1 country.

Yu CaoDepartment of Surgical Oncology and Breast Surgery, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, 110001, China.
Yonghui FengDepartment of Laboratory Medicine, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, 110001, China.
Yanjun ZhangDepartment of Medical Examination Center, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, 110001, China.
Xiaotong ZhuDepartment of Immunology, College of Basic Medical Sciences, China Medical University, Shenyang, Liaoning, 110122, China.
Feng JinDepartment of Surgical Oncology and Breast Surgery, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, 110001, China. jinfeng66cn@hotmail.com.
First Hospital of China Medical University · CNChina Medical University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundL-Arg is involved in many biological activities, including the activation of T cells. In breast cancer patients, L-Arg is depleted by nitric oxide synthase 2 (NOS2) and arginase 1 (ARG-1) produced by myeloid-derived suppressor cells (MDSCs). Our aim was to test whether L-Arg supplementation could enhance antitumor immune response and improve survivorship in a rodent model of mammary tumor.

methodsTumor volumes in control and L-Arg treated 4 T1 tumor bearing (TB) BALB/c mice were measured and survival rates were recorded. The percentages of MDSCs, dendritic cells (DCs), regulatory T cells (Tregs), macrophages, CD4(+) T cells, and CD8(+) T cells were examined by flow cytometry. Additionally, levels of IL-10, TNF-α, and IFN-γ were measured by enzyme-linked immunosorbent assay (ELISA) and nitric oxide (NO) levels were measured by the Griess reaction. IFN-γ, T-bet, Granzyme B, ARG-1 and iNOS mRNA levels were examined by real-time RT-PCR.

resultsL-Arg treatment inhibited tumor growth and prolonged the survival time of 4 T1 TB mice. The frequency of MDSCs was significantly suppressed in L-Arg treated TB mice. In contrast, the numbers and function of macrophages, CD4(+) T cells, and CD8(+) T cells were significantly enhanced. The IFN-γ, TNF-α, NO levels in splenocytes supernatant, as well as iNOS, IFN-γ, Granzyme B mRNA levels in splenocytes and tumor blocks were significantly increased. The ARG-1 mRNA level in tumor blocks, the frequency of Tregs, and IL-10 level were not affected.

conclusionL-Arg supplementation significantly inhibited tumor growth and prolonged the survival time of 4 T1 TB mice, which was associated with the reduction of MDSCs, and enhanced innate and adaptive immune responses.

Indexed as

Adaptive ImmunityAnimalsArginineDisease Models, AnimalEnzyme-Linked Immunosorbent AssayFemaleFlow CytometryImmunity, InnateMammary Neoplasms, ExperimentalMiceMice, Inbred BALB CMyeloid-Derived Suppressor CellsReal-Time Polymerase Chain ReactionArginineBreast cancerL-ArginineMDSCsTumor immunity

Identifiers

PMID27246354
PMCPMC4888479
OpenAlexW2410618438

What OpenQuestion holds

Textmetadata
LicenceCC BY
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 OpenQuestion graph.