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Pierini S, Tanyi JL, Simpkins F, George E, Uribe-Herranz M, Drapkin R, Burger R, Morgan MA, Facciabene A. Ovarian granulosa cell tumor characterization identifies FOXL2 as an immunotherapeutic target. JCI Insight 2020; 5:136773. [PMID: 32814714 PMCID: PMC7455139 DOI: 10.1172/jci.insight.136773] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Accepted: 07/02/2020] [Indexed: 12/13/2022] Open
Abstract
Granulosa cell tumors (GCT) are rare ovarian malignancies. Due to the lack of effective treatment in late relapse, there is a clear unmet need for novel therapies. Forkhead Box L2 (FOXL2) is a protein mainly expressed in granulosa cells (GC) and therefore is a rational therapeutic target. Since we identified tumor infiltrating lymphocytes (TILs) as the main immune population within GCT, TILs from 11 GCT patients were expanded, and their phenotypes were interrogated to determine that T cells acquired late antigen-experienced phenotypes and lower levels of PD1 expression. Importantly, TILs maintained their functionality after ex vivo expansion as they vigorously reacted against autologous tumors (100% of patients) and against FOXL2 peptides (57.1% of patients). To validate the relevance of FOXL2 as a target for immune therapy, we developed a plasmid DNA vaccine (FoxL2–tetanus toxin; FoxL2-TT) by fusing Foxl2 cDNA with the immune-enhancing domain of TT. Mice immunization with FoxL2-TT controlled growth of FOXL2-expressing ovarian (BR5) and breast (4T1) cancers in a T cell–mediated manner. Combination of anti–PD-L1 with FoxL2-TT vaccination further reduced tumor progression and improved mouse survival without affecting the female reproductive system and pregnancy. Together, our results suggest that FOXL2 immune targeting can produce substantial long-term clinical benefits. Our study can serve as a foundation for trials testing immunotherapeutic approaches in patients with ovarian GCT. FOXL2 may serve as a immunotherapeutic target for tumor infiltrating lymphocytes in ovarian granulosa cell tumors.
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Affiliation(s)
- Stefano Pierini
- Department of Radiation Oncology and.,Ovarian Cancer Research Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Janos L Tanyi
- Ovarian Cancer Research Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Fiona Simpkins
- Ovarian Cancer Research Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Erin George
- Ovarian Cancer Research Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Mireia Uribe-Herranz
- Department of Radiation Oncology and.,Ovarian Cancer Research Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Ronny Drapkin
- Ovarian Cancer Research Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Robert Burger
- Ovarian Cancer Research Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Mark A Morgan
- Ovarian Cancer Research Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Andrea Facciabene
- Department of Radiation Oncology and.,Ovarian Cancer Research Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
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Eozenou C, Lesage-Padilla A, Mauffré V, Healey GD, Camous S, Bolifraud P, Giraud-Delville C, Vaiman D, Shimizu T, Miyamoto A, Sheldon IM, Constant F, Pannetier M, Sandra O. FOXL2 is a Progesterone Target Gene in the Endometrium of Ruminants. Int J Mol Sci 2020; 21:ijms21041478. [PMID: 32098259 PMCID: PMC7073057 DOI: 10.3390/ijms21041478] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 02/13/2020] [Accepted: 02/19/2020] [Indexed: 02/08/2023] Open
Abstract
Forkhead Box L2 (FOXL2) is a member of the FOXL class of transcription factors, which are essential for ovarian differentiation and function. In the endometrium, FOXL2 is also thought to be important in cattle; however, it is not clear how its expression is regulated. The maternal recognition of pregnancy signal in cattle, interferon-Tau, does not regulate FOXL2 expression. Therefore, in the present study, we examined whether the ovarian steroid hormones that orchestrate implantation regulate FOXL2 gene expression in ruminants. In sheep, we confirmed that FOXL2 mRNA and protein was expressed in the endometrium across the oestrous cycle (day 4 to day 15 post-oestrus). Similar to the bovine endometrium, ovine FOXL2 endometrial expression was low during the luteal phase of the oestrous cycle (4 to 12 days post-oestrus) and at implantation (15 days post-oestrus) while mRNA and protein expression significantly increased during the luteolytic phase (day 15 post-oestrus in cycle). In pregnant ewes, inhibition of progesterone production by trilostane during the day 5 to 16 period prevented the rise in progesterone concentrations and led to a significant increase of FOXL2 expression in caruncles compared with the control group (1.4-fold, p < 0.05). Ovariectomized ewes or cows that were supplemented with exogenous progesterone for 12 days or 6 days, respectively, had lower endometrial FOXL2 expression compared with control ovariectomized females (sheep, mRNA, 1.8-fold; protein, 2.4-fold; cattle; mRNA, 2.2-fold; p < 0.05). Exogenous oestradiol treatments for 12 days in sheep or 2 days in cattle did not affect FOXL2 endometrial expression compared with control ovariectomized females, except at the protein level in both endometrial areas in the sheep. Moreover, treating bovine endometrial explants with exogenous progesterone for 48h reduced FOXL2 expression. Using in vitro assays with COS7 cells we also demonstrated that progesterone regulates the FOXL2 promoter activity through the progesterone receptor. Collectively, our findings imply that endometrial FOXL2 is, as a direct target of progesterone, involved in early pregnancy and implantation.
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Affiliation(s)
- Caroline Eozenou
- Université Paris-Saclay, INRAE, ENVA, UVSQ, BREED, 78350 Jouy-en-Josas, France; (A.L.-P.); (V.M.); (S.C.); (P.B.); (C.G.-D.); (F.C.); (M.P.)
- Institut Pasteur, UMR 3738, Biologie du Développement et Cellules Souches, Laboratoire de Génétique du Développement Humain, 25 rue du docteur roux, F75015 Paris, France
- Correspondence: (C.E.); (O.S.); Tel.: +33-144389136 (C.E.); +33-134642343 (O.S.)
| | - Audrey Lesage-Padilla
- Université Paris-Saclay, INRAE, ENVA, UVSQ, BREED, 78350 Jouy-en-Josas, France; (A.L.-P.); (V.M.); (S.C.); (P.B.); (C.G.-D.); (F.C.); (M.P.)
| | - Vincent Mauffré
- Université Paris-Saclay, INRAE, ENVA, UVSQ, BREED, 78350 Jouy-en-Josas, France; (A.L.-P.); (V.M.); (S.C.); (P.B.); (C.G.-D.); (F.C.); (M.P.)
| | - Gareth D. Healey
- Swansea University Medical School, Swansea University, Singleton Park, Swansea SA2 8PP, UK; (G.D.H.); (I.M.S.)
| | - Sylvaine Camous
- Université Paris-Saclay, INRAE, ENVA, UVSQ, BREED, 78350 Jouy-en-Josas, France; (A.L.-P.); (V.M.); (S.C.); (P.B.); (C.G.-D.); (F.C.); (M.P.)
| | - Philippe Bolifraud
- Université Paris-Saclay, INRAE, ENVA, UVSQ, BREED, 78350 Jouy-en-Josas, France; (A.L.-P.); (V.M.); (S.C.); (P.B.); (C.G.-D.); (F.C.); (M.P.)
| | - Corinne Giraud-Delville
- Université Paris-Saclay, INRAE, ENVA, UVSQ, BREED, 78350 Jouy-en-Josas, France; (A.L.-P.); (V.M.); (S.C.); (P.B.); (C.G.-D.); (F.C.); (M.P.)
| | - Daniel Vaiman
- Institut Cochin, INSERM U1016, UMR 8104 CNRS, Faculté René Descartes, 24 rue du Faubourg St Jacques, 75014 Paris, France;
| | - Takashi Shimizu
- Obihiro University of Agriculture and Veterinary Medicine, Obihiro 080-8555, Japan; (T.S.); (A.M.)
| | - Akio Miyamoto
- Obihiro University of Agriculture and Veterinary Medicine, Obihiro 080-8555, Japan; (T.S.); (A.M.)
| | - Iain Martin Sheldon
- Swansea University Medical School, Swansea University, Singleton Park, Swansea SA2 8PP, UK; (G.D.H.); (I.M.S.)
| | - Fabienne Constant
- Université Paris-Saclay, INRAE, ENVA, UVSQ, BREED, 78350 Jouy-en-Josas, France; (A.L.-P.); (V.M.); (S.C.); (P.B.); (C.G.-D.); (F.C.); (M.P.)
| | - Maëlle Pannetier
- Université Paris-Saclay, INRAE, ENVA, UVSQ, BREED, 78350 Jouy-en-Josas, France; (A.L.-P.); (V.M.); (S.C.); (P.B.); (C.G.-D.); (F.C.); (M.P.)
| | - Olivier Sandra
- Université Paris-Saclay, INRAE, ENVA, UVSQ, BREED, 78350 Jouy-en-Josas, France; (A.L.-P.); (V.M.); (S.C.); (P.B.); (C.G.-D.); (F.C.); (M.P.)
- Correspondence: (C.E.); (O.S.); Tel.: +33-144389136 (C.E.); +33-134642343 (O.S.)
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