Evidence map›Paper›PMID 21937694›Full record

ArticleBlood2012

Inducible knockout of GRP78/BiP in the hematopoietic system suppresses Pten-null leukemogenesis and AKT oncogenic signaling.

Shiuan Wey, Biquan Luo, Chun-Chih Tseng, Min Ni, Hui Zhou, Yong Fu, Deepa Bhojwani, William L Carroll, Amy S Lee

Open access · bronzeAbstract read
In one paragraph

Article in Blood, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 56 papers.

0numbers the graph read from it
0cells of the map it votes in
56citing papers in PubMed
5.8field-weighted citation impact, top 4% 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

56 citing papers in PubMed, 92 citations in OpenAlex.

  1. Review
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  3. Stress-induced translocation of the endoplasmic reticulum chaperone GRP78/BiP and its impact on human disease and therapy.Proceedings of the National Academy of Sciences of the United States of America · 2025
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

9 authors at 3 institutions in 1 country.

Shiuan WeyDepartment of Biochemistry and Molecular Biology, University of Southern California Keck School of Medicine, University of Southern California Norris Comprehensive Cancer Center, Los Angeles, USA.
Biquan Luo
Chun-Chih Tseng
Min Ni
Hui Zhou
Yong Fu
Deepa Bhojwani
William L Carroll
Amy S Lee
University of Southern California · USNew York University · USSt. Jude Children's Research Hospital · US

Funding

USC/NORRIS COMPREHENSIVE CANCER CENTER (CORE) SUPPORTP30CA014089 · NCI · UNIVERSITY OF SOUTHERN CALIFORNIA · PI Saul Priceman · 1985 to 2026
$181.4M
USC RESEARCH CENTER FOR LIVER DISEASES: PILOT PROGRAMSP30DK048522 · NIDDK · UNIVERSITY OF SOUTHERN CALIFORNIA · PI GOLDEN, LUCY MARY · 1995 to 2020
$21.8M
STRESS INDUCTION OF THE GLUCOSE REGULATED PROTEINSR01CA027607 · NCI · UNIVERSITY OF SOUTHERN CALIFORNIA · PI LEE, AMY S · 1985 to 2021
$11.1M
COORDINATED GENE EXPRESSION IN MAMMALIAN CELLSR37CA027607 · NCI · UNIVERSITY OF SOUTHERN CALIFORNIA · PI LEE, AMY S · 1988 to 1995
–
NCI NIH HHS CA027607NCI NIH HHS P30 CA014089NCI NIH HHS R01 CA027607NIDDK NIH HHS P30 DK048522
6 · The paper itself

Abstract

Traditionally, GRP78 is regarded as protective against hypoxia and nutrient starvation prevalent in the microenvironment of solid tumors; thus, its role in the development of hematologic malignancies remains to be determined. To directly elucidate the requirement of GRP78 in leukemogenesis, we created a biallelic conditional knockout mouse model of GRP78 and PTEN in the hematopoietic system. Strikingly, heterozygous knockdown of GRP78 in PTEN null mice is sufficient to restore the hematopoietic stem cell population back to the normal percentage and suppress leukemic blast cell expansion. AKT/mTOR activation in PTEN null BM cells is potently inhibited by Grp78 heterozygosity, corresponding with suppression of the PI3K/AKT pathway by GRP78 knockdown in leukemia cell lines. This is the first demonstration that GRP78 is a critical effector of leukemia progression, at least in part through regulation of oncogenic PI3K/AKT signaling. In agreement with PI3K/AKT as an effector for cytosine arabinoside resistance in acute myeloid leukemia, overexpression of GRP78 renders human leukemic cells more resistant to cytosine arabinoside-induced apoptosis, whereas knockdown of GRP78 sensitizes them. These, coupled with the emerging association of elevated GRP78 expression in leukemic blasts of adult patients and early relapse in childhood leukemia, suggest that GRP78 is a novel therapeutic target for leukemia.

Indexed as

AnimalsApoptosisBiomarkers, TumorBlotting, WesternCell CycleCell ProliferationEndoplasmic Reticulum Chaperone BiPFlow CytometryFluorescent Antibody TechniqueGene Expression ProfilingHeat-Shock ProteinsHematopoietic SystemIntegrasesLeukemiaMiceMice, Inbred C57BLBiomarkers, TumorCre recombinaseEndoplasmic Reticulum Chaperone BiPHeat-Shock ProteinsHSPA5 protein, humanHspa5 protein, mouseIntegrasesPhosphatidylinositol 3-KinasesProto-Oncogene Proteins c-aktPTEN PhosphohydrolasePten protein, mouseRNA, Messenger

Identifiers

PMID21937694
PMCPMC3265205
OpenAlexW2094754879

What OpenQuestion 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 OpenQuestion graph.