Evidence map›Paper›PMID 36576228›Full record

ArticleCancer science2023

ABCA9, an ER cholesterol transporter, inhibits breast cancer cell proliferation via SREBP-2 signaling.

Hyeon-Ji Hwang, Kang-Hoon Lee, Je-Yoel Cho

Open access · goldAbstract read
In one paragraph

Article in Cancer science, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
4.4field-weighted citation impact, top 5% 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

17 citing papers in PubMed, 21 citations in OpenAlex.

  1. Article
  2. DAPL1 is activated by Np63 and GRα and regulates lipid metabolism.Journal of molecular medicine (Berlin, Germany) · 2026
    Article
  3. Review
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  6. Dysregulation of cholesterol homeostasis in cancer pathogenesis.Cellular and molecular life sciences : CMLS · 2025
    Review
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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

3 authors at 1 institution in 2 countries.

Hyeon-Ji HwangDepartment of Biochemistry, BK21 Plus and Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, Korea.
Kang-Hoon LeeDepartment of Biochemistry, BK21 Plus and Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, Korea.
Je-Yoel ChoDepartment of Biochemistry, BK21 Plus and Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, Korea.ORCID https://orcid.org/0000-0003-1030-3577
Seoul National University · KR

Funding

the Ministry of Science and ICT and the National Research Foundation of Korea (NRF) SRC program: Comparative medicine Disease Research Center (CDRC) 2021R1A5A1033157
6 · The paper itself

Abstract

The association between cholesterol metabolism and cancer development and progression has been recently highlighted. However, the role and function of many cholesterol transporters remain largely unknown. Here, we focused on the ATP-binding cassette subfamily A member 9 (ABCA9) transporter given that its expression is significantly downregulated in both canine mammary tumors and human breast cancers, which in breast cancer patients correlates with poor prognosis. We found that ABCA9 is mainly present in the endoplasmic reticulum (ER) and is responsible for promoting cholesterol accumulation in this structure. Accordingly, ABCA9 inhibited sterol-regulatory element binding protein-2 (SREBP-2) translocation from the ER to the nucleus, a crucial step for cholesterol synthesis, resulting in the downregulation of cholesterol synthesis gene expression. ABCA9 expression in breast cancer cells attenuated cell proliferation and reduced their colony-forming abilities. We identified ABCA9 expression to be regulated by Forkhead box O1 (FOXO1). Inhibition of PI3K induced enhanced ABCA9 expression through the activation of the PI3K-Akt-FOXO1 pathway in breast cancer cells. Altogether, our study suggests that ABCA9 functions as an ER cholesterol transporter that suppresses cholesterol synthesis via the inhibition of SREBP-2 signaling and that its restoration halts breast cancer cell proliferation. Our findings provide novel insight into the vital role of ABCA9 in breast cancer progression.

Indexed as

Breast NeoplasmsAnimalsATP-Binding Cassette TransportersCell ProliferationCholesterolDogsEndoplasmic ReticulumFemaleHumansMembrane Transport ProteinsPhosphatidylinositol 3-KinasesSterol Regulatory Element Binding Protein 1Sterol Regulatory Element Binding Protein 2ABCA9 protein, humanATP-Binding Cassette TransportersCholesterolMembrane Transport ProteinsPhosphatidylinositol 3-KinasesSterol Regulatory Element Binding Protein 1Sterol Regulatory Element Binding Protein 2ABCA9breast cancercholesterol metabolismFOXOSREBP-2

Identifiers

PMID36576228
PMCPMC10067411
OpenAlexW4313237736

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.