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Enhancing Progestin Therapy with a Glucagon-Like Peptide 1 Agonist for the Conservative Management of Endometrial Cancer
Journal article   Open access   Peer reviewed

Enhancing Progestin Therapy with a Glucagon-Like Peptide 1 Agonist for the Conservative Management of Endometrial Cancer

Andrea R. Hagemann, Ian S Hagemann, David G. Mutch, Eric J. Devor, Paige K. Malmrose, Yuping Zhang, Abigail M. Morrison, Kristina W. Thiel and Kimberly K. Leslie
Cancers, Vol.17(4), 598
02/10/2025
DOI: 10.3390/cancers17040598
PMCID: PMC11853405
PMID: 40002193
url
https://doi.org/10.3390/cancers17040598View
Published (Version of record) Open Access

Abstract

Objective: Obesity is a major risk factor for endometrial cancer. In addition to hormone therapy with progestins, glucagon like peptide-1 receptor (GLP-1R) agonists such as semaglutide may be helpful to achieve weight loss during conservative treatment of endometrial hyperplasia or cancer. Methods: We theorized that the combination of semaglutide and the progestin levonorgestrel would be useful as a novel treatment or prevention regimen and tested this hypothesis using endometrial cancer cell lines and patient-derived organoids (PDOs). Results: Hec50, KLE, and Ishikawa endometrial cancer cells express GLP-1R, as determined by both qPCR and Western blotting, and GLP-1R agonist treatment induces GLP-1R mRNA transcription through positive feedback mechanisms in cell models. PDOs from six individuals with grade 1 endometrial carcinomas were treated with progesterone, levonorgestrel, semaglutide, or levonorgestrel + semaglutide. Multiple models demonstrated a significant reduction in viability in response to combinatorial treatment, and the effect was noted in models from both PR high- and PR low-expressing tumors. Most interesting was the induction not only of the membrane GLP-1R with treatment, but also the significant upregulation of nuclear and membrane progesterone receptors—PR and PGRMC1/2, respectively—indicating a potential positive feedback loop between semaglutide and progestins such as levonorgestrel. Conclusion: In summary, we identify synergistic molecular cross-talk between the GLP-1R and steroid hormone receptor pathways, with the potential to enhance the anticancer activity of levonorgestrel when combined with semaglutide.
endometrial cancer hormone therapy glucagon-like peptide 1 receptor agonists conservative management progesterone

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