Inhibition of Tumor Microenvironment Cytokine Signaling Sensitizes Ovarian Cancer Cells to Antiestrogen Therapy

Antiestrogen therapy (AET) is an alternative to cytotoxic chemotherapy for recurrent ovarian cancer, yet the often short duration of response suggests mechanisms of resistance. We previously demonstrated that tumor microenvironment interleukin-6/leukemia inhibitory factor (IL6/LIF) cytokines induce...

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Main Authors: Lijun Tan, Katelyn Tondo-Steele, Caroline Foster, Carrie McIlwain, Danielle E. Bolland, Howard C. Crawford, Andrew Sciallis, Karen McLean
Format: Article
Language:English
Published: MDPI AG 2022-09-01
Series:Cancers
Subjects:
Online Access:https://www.mdpi.com/2072-6694/14/19/4675
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author Lijun Tan
Katelyn Tondo-Steele
Caroline Foster
Carrie McIlwain
Danielle E. Bolland
Howard C. Crawford
Andrew Sciallis
Karen McLean
author_facet Lijun Tan
Katelyn Tondo-Steele
Caroline Foster
Carrie McIlwain
Danielle E. Bolland
Howard C. Crawford
Andrew Sciallis
Karen McLean
author_sort Lijun Tan
collection DOAJ
description Antiestrogen therapy (AET) is an alternative to cytotoxic chemotherapy for recurrent ovarian cancer, yet the often short duration of response suggests mechanisms of resistance. We previously demonstrated that tumor microenvironment interleukin-6/leukemia inhibitory factor (IL6/LIF) cytokines induce tumor cell JAK-STAT signaling to promote cancer growth. Crosstalk between estrogen signaling and cytokine signaling has been reported. Therefore, we sought to characterize the impact of IL6/LIF signaling on estrogen signaling in epithelial ovarian cancer and investigate the efficacy of combination therapy. We first assessed patient tumors for cytokine expression and compared it with response to AET to determine clinical relevance. In vitro, we determined the effect of IL6/LIF on estrogen receptor expression and signaling. Cell viability assays were used to determine the efficacy and potential synergy of cytokine blockade and AET. We then extended studies to animal models, incorporating patient-derived stromal cells. Our results demonstrated shorter progression-free interval on AET in patients with stromal IL6/LIF expression. In vitro, IL6/LIF increased tumor cell estrogen receptor expression and signaling, and combination cytokine blockade and AET resulted in synergistic inhibition of tumor cell growth. The anticancer effect was verified in a mouse model. In conclusion, due to crosstalk between IL6/LIF cytokine signaling and estrogen signaling, dual blockade is a potential new treatment approach for ovarian cancer.
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spelling doaj.art-d5eca5c87b274408a21398e310e910402023-11-23T19:54:44ZengMDPI AGCancers2072-66942022-09-011419467510.3390/cancers14194675Inhibition of Tumor Microenvironment Cytokine Signaling Sensitizes Ovarian Cancer Cells to Antiestrogen TherapyLijun Tan0Katelyn Tondo-Steele1Caroline Foster2Carrie McIlwain3Danielle E. Bolland4Howard C. Crawford5Andrew Sciallis6Karen McLean7Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, University of Michigan, 1500 E. Medical Center Dr, Ann Arbor, MI 48109, USADivision of Gynecologic Oncology, Department of Obstetrics and Gynecology, University of Michigan, 1500 E. Medical Center Dr, Ann Arbor, MI 48109, USADivision of Gynecologic Oncology, Department of Obstetrics and Gynecology, University of Michigan, 1500 E. Medical Center Dr, Ann Arbor, MI 48109, USACancer Institute of Chicago, 6700 West 95th Street, Suite 330, Oak Lawn, IL 60453, USAScience and Math Division, University of Minnesota, 600 East 4th Street, Morris, MN 56267, USAHenry Ford Pancreatic Cancer Center, Henry Ford Hospital, 2799 W. Grand Blvd, Detroit, MI 48202, USAPathology and Laboratory Medicine Institute, Cleveland Clinic Foundation, 9500 Euclid Ave., Cleveland, OH 44195, USADivision of Gynecologic Oncology, Department of Obstetrics and Gynecology, University of Michigan, 1500 E. Medical Center Dr, Ann Arbor, MI 48109, USAAntiestrogen therapy (AET) is an alternative to cytotoxic chemotherapy for recurrent ovarian cancer, yet the often short duration of response suggests mechanisms of resistance. We previously demonstrated that tumor microenvironment interleukin-6/leukemia inhibitory factor (IL6/LIF) cytokines induce tumor cell JAK-STAT signaling to promote cancer growth. Crosstalk between estrogen signaling and cytokine signaling has been reported. Therefore, we sought to characterize the impact of IL6/LIF signaling on estrogen signaling in epithelial ovarian cancer and investigate the efficacy of combination therapy. We first assessed patient tumors for cytokine expression and compared it with response to AET to determine clinical relevance. In vitro, we determined the effect of IL6/LIF on estrogen receptor expression and signaling. Cell viability assays were used to determine the efficacy and potential synergy of cytokine blockade and AET. We then extended studies to animal models, incorporating patient-derived stromal cells. Our results demonstrated shorter progression-free interval on AET in patients with stromal IL6/LIF expression. In vitro, IL6/LIF increased tumor cell estrogen receptor expression and signaling, and combination cytokine blockade and AET resulted in synergistic inhibition of tumor cell growth. The anticancer effect was verified in a mouse model. In conclusion, due to crosstalk between IL6/LIF cytokine signaling and estrogen signaling, dual blockade is a potential new treatment approach for ovarian cancer.https://www.mdpi.com/2072-6694/14/19/4675mesenchymal stem cellsovarian cancerleukemia inhibitory factor (LIF)interleukin-6 (IL6)STAT3JAK2 inhibition
spellingShingle Lijun Tan
Katelyn Tondo-Steele
Caroline Foster
Carrie McIlwain
Danielle E. Bolland
Howard C. Crawford
Andrew Sciallis
Karen McLean
Inhibition of Tumor Microenvironment Cytokine Signaling Sensitizes Ovarian Cancer Cells to Antiestrogen Therapy
Cancers
mesenchymal stem cells
ovarian cancer
leukemia inhibitory factor (LIF)
interleukin-6 (IL6)
STAT3
JAK2 inhibition
title Inhibition of Tumor Microenvironment Cytokine Signaling Sensitizes Ovarian Cancer Cells to Antiestrogen Therapy
title_full Inhibition of Tumor Microenvironment Cytokine Signaling Sensitizes Ovarian Cancer Cells to Antiestrogen Therapy
title_fullStr Inhibition of Tumor Microenvironment Cytokine Signaling Sensitizes Ovarian Cancer Cells to Antiestrogen Therapy
title_full_unstemmed Inhibition of Tumor Microenvironment Cytokine Signaling Sensitizes Ovarian Cancer Cells to Antiestrogen Therapy
title_short Inhibition of Tumor Microenvironment Cytokine Signaling Sensitizes Ovarian Cancer Cells to Antiestrogen Therapy
title_sort inhibition of tumor microenvironment cytokine signaling sensitizes ovarian cancer cells to antiestrogen therapy
topic mesenchymal stem cells
ovarian cancer
leukemia inhibitory factor (LIF)
interleukin-6 (IL6)
STAT3
JAK2 inhibition
url https://www.mdpi.com/2072-6694/14/19/4675
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