Evidence map›Paper›PMID 28659174›Full record

ArticleJournal of experimental & clinical cancer research : CR2017

CRISPR/Cas9 targeting of GPRC6A suppresses prostate cancer tumorigenesis in a human xenograft model.

Ruisong Ye, Min Pi, John V Cox, Satoru K Nishimoto, L Darryl Quarles

Open access · goldAbstract read
In one paragraph

Article in Journal of experimental & clinical cancer research : CR, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 45 papers.

0numbers the graph read from it
0cells of the map it votes in
45citing papers in PubMed
5.0field-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

45 citing papers in PubMed, 69 citations in OpenAlex.

  1. Review
  2. Review
  3. Article
  4. Review
  5. Article
  6. Article
  7. Review
  8. Review
  9. Review
  10. Article
  11. Review
  12. Article
  13. Article
  14. Review
  15. Review
  16. Review
  17. Article
  18. Review
  19. Review
  20. Article
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 1 institution in 1 country.

Ruisong YeDepartment of Medicine, University of Tennessee Health Science Center, 19 S Manassas St., Memphis, TN, 38163, USA.
Min PiDepartment of Medicine, University of Tennessee Health Science Center, 19 S Manassas St., Memphis, TN, 38163, USA. mpi@uthsc.edu.
John V CoxDepartment of Microbiology, Immunology and Biochemistry, University of Tennessee Health Science Center, 19 S Manassas St., Memphis, TN, 38163, USA.
Satoru K NishimotoDepartment of Microbiology, Immunology and Biochemistry, University of Tennessee Health Science Center, 19 S Manassas St., Memphis, TN, 38163, USA.
L Darryl QuarlesDepartment of Medicine, University of Tennessee Health Science Center, 19 S Manassas St., Memphis, TN, 38163, USA. dquarles@uthsc.edu.
University of Tennessee Health Science Center · US

Funding

PHARMACOLOGICALLY INDUCED NEO-OSTEOGENESISR01AR037308 · NIAMS · UNIVERSITY OF TENNESSEE HEALTH SCI CTR · PI QUARLES, L DARRYL · 1991 to 2009
$3.3M
REGULATION OF LIPOPROTEIN LIPASE IN HUMAN ADIPOCYTESR01DK039176 · NIDDK · UNIVERSITY OF ARKANSAS MED SCIS LTL ROCK · PI KERN, PHILIP A · 1993 to 2005
$1.6M
Discovery of an Osteocalcin Sensing GPCR Regulating Beta-Cell FunctionR01DK095812 · NIDDK · UNIVERSITY OF TENNESSEE HEALTH SCI CTR · PI QUARLES, L DARRYL · 2013 to 2016
$1.4M
NIAMS NIH HHS R01 AR037308NIDDK NIH HHS R01 DK039176NIDDK NIH HHS R01 DK095812
6 · The paper itself

Abstract

backgroundGPRC6A is implicated in the pathogenesis of prostate cancer, but its role remains uncertain because of a purported tolerant gene variant created by substitution of a K..Y polymorphism in the 3rd intracellular loop (IL) that evolved in the majority of humans and replaces the ancestral RKLP present in 40% of humans of African descent and all other species.

methodsWe determined whether the K..Y polymorphism is present in human-derived prostate cancer cell lines by sequencing the region of the 3rd IL and assessed the cellular localization of a "humanized" mouse GPRC6A containing the K..Y sequence by immunofluorescence. We assessed functions of GPRC6A in PC-3 cells expressing endogenous GPRC6A and in GPRC6A-deficient PC-3 cells created using CRISPR/Cas9 technology. The effect of GPRC6A on basal and ligand stimulated cell proliferation and migration was evaluated in vitro in wild-type and PC-3-deficient cell lines. The effect of editing GPRC6A on prostate cancer growth and progression in vivo was assessed in a Xenograft mouse model implanted with wild-type and PC-3 deficient cells and treated with the GPRC6A ligand osteocalcin.

resultsWe found that all of the human prostate cancer cell lines tested endogenously express the "K..Y" polymorphism in the 3rd IL. Comparison of mouse wild-type GPRC6A with a "humanized" mouse GPRC6A construct created by replacing the "RKLP" with the "K..Y" sequence, found that both receptors were predominantly expressed on the cell surface. The transfected "humanized" GPRC6A receptor, however, preferentially activated mTOR compared to ERK signaling in HEK-293 cells. In contrast, in PC-3 cells expressing the endogenous GPRC6A with the "K..Y" polymorphism, the ligand osteocalcin stimulated ERK, AKT and mTOR phosphorylation, promoted cell proliferation and migration, and upregulated genes regulating testosterone biosynthesis. Targeting GPRC6A in PC-3 cells by CRISPR/Cas9 significantly blocked these responses in vitro. In addition, GPRC6A deficient PC-3 xenografts exhibited significantly less growth and were resistant to osteocalcin-induced prostate cancer progression compared to control PC-3 cells expressing GPRC6A.

conclusionsHuman GPRC6A is a functional osteocalcin and testosterone sensing receptor that promotes prostate cancer progression. GPRC6A may contribute to racial disparities in prostate cancer, and is a potential therapeutic target to develop antagonists to treat prostate cancer.

Indexed as

CRISPR-Cas SystemsGene TargetingAnimalsCell Line, TumorCell MovementCell ProliferationCell Transformation, NeoplasticDisease Models, AnimalGene EditingGene OrderGenetic VectorsHEK293 CellsHumansLigandsMaleMiceGPRC6A protein, humanLigandsReceptors, G-Protein-CoupledCRISPR/Cas9GPRC6AOsteocalcinProstate cancer

Identifiers

PMID28659174
PMCPMC5490090
OpenAlexW2733906300

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.