Evidence map›Paper›PMID 33770127›Full record

ArticlePloS one2021

Mycobacterium leprae promotes triacylglycerol de novo synthesis through induction of GPAT3 expression in human premonocytic THP-1 cells.

Kazunari Tanigawa, Yasuhiro Hayashi, Kotaro Hama, Atsushi Yamashita, Kazuaki Yokoyama, Yuqian Luo, Akira Kawashima, Yumi Maeda, Yasuhiro Nakamura, Ayako Harada and 3 more

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
0.5field-weighted citation impact, top 39% 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

6 citing papers in PubMed, 9 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Review
  5. Review
  6. Essential Roles of PPARs in Lipid Metabolism during Mycobacterial Infection.International journal of molecular sciences · 2021
    Review
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

13 authors at 2 institutions in 1 country.

Kazunari TanigawaDepartment of Molecular Pharmaceutics, Faculty of Pharma-Science, Teikyo University, Itabashi-ku, Tokyo, Japan.
Yasuhiro HayashiDepartment of Biological Chemistry, Faculty of Pharma-Science, Teikyo University, Itabashi-ku, Tokyo, Japan.
Kotaro HamaDepartment of Physical Pharmaceutics, Faculty of Pharma-Science, Teikyo University, Itabashi-ku, Tokyo, Japan.
Atsushi YamashitaDepartment of Biological Chemistry, Faculty of Pharma-Science, Teikyo University, Itabashi-ku, Tokyo, Japan.ORCID 0000-0002-2544-2134
Kazuaki YokoyamaDepartment of Physical Pharmaceutics, Faculty of Pharma-Science, Teikyo University, Itabashi-ku, Tokyo, Japan.ORCID 0000-0003-2407-5368
Yuqian LuoDepartment of Clinical Laboratory Science, Faculty of Medical Technology, Teikyo University, Itabashi-ku, Tokyo, Japan.
Akira KawashimaDepartment of Clinical Laboratory Science, Faculty of Medical Technology, Teikyo University, Itabashi-ku, Tokyo, Japan.
Yumi MaedaDepartment of Mycobacteriology, Leprosy Research Center, National Institute of Infectious Diseases, Higashimurayama-shi, Tokyo, Japan.
Yasuhiro NakamuraDepartment of Molecular Pharmaceutics, Faculty of Pharma-Science, Teikyo University, Itabashi-ku, Tokyo, Japan.ORCID 0000-0003-2167-9182
Ayako HaradaDepartment of Molecular Pharmaceutics, Faculty of Pharma-Science, Teikyo University, Itabashi-ku, Tokyo, Japan.
Mitsuo KiriyaDepartment of Clinical Laboratory Science, Faculty of Medical Technology, Teikyo University, Itabashi-ku, Tokyo, Japan.ORCID 0000-0002-8896-0764
Ken KarasawaDepartment of Molecular Pharmaceutics, Faculty of Pharma-Science, Teikyo University, Itabashi-ku, Tokyo, Japan.
Koichi SuzukiDepartment of Clinical Laboratory Science, Faculty of Medical Technology, Teikyo University, Itabashi-ku, Tokyo, Japan.ORCID 0000-0001-8659-4660
Teikyo University · JPNational Institute of Infectious Diseases · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Mycobacterium leprae (M. leprae) is the etiological agent of leprosy, and the skin lesions of lepromatous leprosy are filled with numerous foamy or xanthomatous histiocytes that are parasitized by M. leprae. Lipids are an important nutrient for the intracellular survival of M. leprae. In this study, we attempted to determine the intracellular lipid composition and underlying mechanisms for changes in host cell lipid metabolism induced by M. leprae infection. Using high-performance thin-layer chromatography (HPTLC), we demonstrated specific induction of triacylglycerol (TAG) production in human macrophage THP-1 cells following M. leprae infection. We then used [14C] stearic acid tracing to show incorporation of this newly synthesized host cell TAG into M. leprae. In parallel with TAG accumulation, expression of host glycerol-3-phosphate acyltransferase 3 (GPAT3), a key enzyme in de novo TAG synthesis, was significantly increased in M. leprae-infected cells. CRISPR/Cas9 genome editing of GPAT3 in THP-1 cells (GPAT3 KO) dramatically reduced accumulation of TAG following M. leprae infection, intracellular mycobacterial load, and bacteria viability. These results together suggest that M. leprae induces host GPAT3 expression to facilitate TAG accumulation within macrophages to maintain a suitable environment that is crucial for intracellular survival of these bacilli.

Indexed as

Mycobacterium lepraeTriglycerides1-Acylglycerol-3-Phosphate O-AcyltransferaseHumansLeprosyLipid MetabolismMacrophagesTHP-1 Cells1-Acylglycerol-3-Phosphate O-AcyltransferaseGPAT3 protein, humanTriglycerides

Identifiers

PMID33770127
PMCPMC7997041
OpenAlexW3137970099

What Socratic 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 Socratic graph.