Evidence map›Paper›PMID 33468130›Full record

ArticleMicrobial cell factories2021

Production of biologically active human interleukin-10 by Bifidobacterium bifidum BGN4.

Nayoun Hong, Seockmo Ku, Kyungjin Yuk, Tony V Johnston, Geun Eog Ji, Myeong Soo Park

Open access · goldAbstract read
In one paragraph

Article in Microbial cell factories, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 1 pooled it
4.3field-weighted citation impact, top 6% 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

14 citing papers in PubMed, 1 synthesis or guideline pooled it, 29 citations in OpenAlex.

  1. Pooled it
  2. Review
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  5. Role ofCurrent developments in nutrition · 2023
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  6. Rheumatoid Arthritis and Reactive Oxygen Species: A Review.Current issues in molecular biology · 2023
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  11. RecombinantFrontiers in microbiology · 2022
    Article
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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

6 authors at 4 institutions in 5 countries.

Nayoun HongDepartment of Food and Nutrition, Research Institute of Ecology, SeoulNationalUniversity, Seoul, 08826, Korea.
Seockmo KuFermentation Science Program, School of Agriculture, College of Basic and Applied Sciences, Middle Tennessee State University, Murfreesboro, TN, 37132, USA.
Kyungjin YukResearch Center, BIFIDO Co., Ltd, Hongcheon, 25117, Korea.
Tony V JohnstonFermentation Science Program, School of Agriculture, College of Basic and Applied Sciences, Middle Tennessee State University, Murfreesboro, TN, 37132, USA.
Geun Eog JiDepartment of Food and Nutrition, Research Institute of Ecology, SeoulNationalUniversity, Seoul, 08826, Korea. geji@snu.ac.kr.
Myeong Soo ParkResearch Center, BIFIDO Co., Ltd, Hongcheon, 25117, Korea. bifidopark@bifido.com.ORCID http://orcid.org/0000-0003-4334-1457
Middle Tennessee State University · USBial (Portugal) · PTNational Institute of Ecology · INSeoul National University · KR

Funding

Faculty Research and Creative Activity Committee, MTSU (US) 221745Ministry of SMEs and Startups (KR) S2848321
6 · The paper itself

Abstract

backgroundBifidobacterium spp. are representative probiotics that play an important role in the health of their hosts. Among various Bifidobacterium spp., B. bifidum BGN4 exhibits relatively high cell adhesion to colonic cells and has been reported to have various in vivo and in vitro bio functionalities (e.g., anti-allergic effect, anti-cancer effect, and modulatory effects on immune cells). Interleukin-10 (IL-10) has emerged as a major suppressor of immune response in macrophages and other antigen presenting cells and plays an essential role in the regulation and resolution of inflammation. In this study, recombinant B. bifidum BGN4 [pBESIL10] was developed to deliver human IL-10 effectively to the intestines.

resultsThe vector pBESIL10 was constructed by cloning the human IL-10 gene under a gap promoter and signal peptide from Bifidobacterium spp. into the E. coli-Bifidobacterium shuttle vector pBES2. The secreted human IL-10 from B. bifidum BGN4 [pBESIL10] was analyzed by sodium dodecyl sulphate-polyacrylamide gel electrophoresis (SDS-PAGE), Western Blotting, and enzyme-linked immunosorbent assay (ELISA). More than 1,473 ± 300 ng/mL (n = 4) of human IL-10 was obtained in the cell free culture supernatant of B. bifidum BGN4 [pBESIL10]. This productivity is significantly higher than other previously reported human IL-10 level from food grade bacteria. In vitro functional evaluation of the cell free culture supernatant of B. bifidum BGN4 [pBESIL10] revealed significantly inhibited interleukin-6 (IL-6) production in lipopolysaccharide (LPS)-induced Raw 264.7 cells (n = 6, p < 0.0001) and interleukin-8 (IL-8) production in LPS-induced HT-29 cells (n = 6, p < 0.01) or TNFα-induced HT-29 cells (n = 6, p < 0.001).

conclusionB. bifidum BGN4 [pBESIL10] efficiently produces and secretes significant amounts of biologically active human IL-10. The human IL-10 production level in this study is the highest of all human IL-10 production reported to date. Further research should be pursued to evaluate B. bifidum BGN4 [pBESIL10] producing IL-10 as a treatment for various inflammation-related diseases, including inflammatory bowel disease, rheumatoid arthritis, allergic asthma, and cancer immunotherapy.

Indexed as

AnimalsBase SequenceBifidobacterium bifidumBlotting, WesternEscherichia coliGene Expression Regulation, BacterialHT29 CellsHumansInterleukin-10MicePlasmidsPromoter Regions, GeneticRAW 264.7 CellsRecombinant ProteinsSequence Homology, Nucleic AcidIL10 protein, humanInterleukin-10Recombinant ProteinsBifidobacterium bifidumBioactiveExpression vectorHuman interleukin-10RecombinantSecretion

Identifiers

PMID33468130
PMCPMC7814708
OpenAlexW3125839824

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.