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Collier AB, Viswanadhapalli S, Gopalam R, Lee TK, Kassees K, Parra K, Sharma G, Reese TC, Liu X, Yang X, Ebrahimi B, Pratap UP, Mahajan M, Arnold WC, Baker A, Chen CY, Elmore ST, Subbarayalu P, Sareddy GR, Valente PT, Kost ER, Ahn JM, Vadlamudi RK. Novel LIPA-Targeted Therapy for Treating Ovarian Cancer. Cancers (Basel) 2024; 16:500. [PMID: 38339252 PMCID: PMC10854701 DOI: 10.3390/cancers16030500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Revised: 01/18/2024] [Accepted: 01/19/2024] [Indexed: 02/12/2024] Open
Abstract
Ovarian cancer (OCa) is the most lethal form of gynecologic cancer, and the tumor heterogeneities at the molecular, cellular, and tissue levels fuel tumor resistance to standard therapies and pose a substantial clinical challenge. Here, we tested the hypothesis that the heightened basal endoplasmic reticulum stress (ERS) observed in OCa represents an exploitable vulnerability and may overcome tumor heterogeneity. Our recent studies identified LIPA as a novel target to induce ERS in cancer cells using the small molecule ERX-41. However, the role of LIPA and theutility of ERX-41 to treat OCa remain unknown. Expression analysis using the TNMplot web tool, TCGA data sets, and immunohistochemistry analysis using a tumor tissue array showed that LIPA is highly expressed in OCa tissues, compared to normal tissues. ERX-41 treatment significantly reduced the cell viability and colony formation ability and promoted the apoptosis of OCa cells. Mechanistic studies revealed a robust and consistent induction of ERS markers, including CHOP, elF2α, PERK, and ATF4, upon ERX-41 treatment. In xenograft and PDX studies, ERX-41 treatment resulted in a significant reduction in tumor growth. Collectively, our results suggest that ERX-41 is a novel therapeutic agent that targets the LIPA with a unique mechanism of ERS induction, which could be exploited to treat heterogeneity in OCa.
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Affiliation(s)
- Alexia B. Collier
- Department of Obstetrics and Gynecology, University of Texas Health San Antonio, San Antonio, TX 78229, USA; (A.B.C.); (S.V.); (R.G.); (X.Y.); (B.E.); (U.P.P.); (M.M.); (W.C.A.); (A.B.); (G.R.S.); (P.T.V.); (E.R.K.)
| | - Suryavathi Viswanadhapalli
- Department of Obstetrics and Gynecology, University of Texas Health San Antonio, San Antonio, TX 78229, USA; (A.B.C.); (S.V.); (R.G.); (X.Y.); (B.E.); (U.P.P.); (M.M.); (W.C.A.); (A.B.); (G.R.S.); (P.T.V.); (E.R.K.)
- Mays Cancer Center, University of Texas Health San Antonio, San Antonio, TX 78229, USA
| | - Rahul Gopalam
- Department of Obstetrics and Gynecology, University of Texas Health San Antonio, San Antonio, TX 78229, USA; (A.B.C.); (S.V.); (R.G.); (X.Y.); (B.E.); (U.P.P.); (M.M.); (W.C.A.); (A.B.); (G.R.S.); (P.T.V.); (E.R.K.)
| | - Tae-Kyung Lee
- Department of Chemistry and Biochemistry, University of Texas at Dallas, Richardson, TX 75080, USA; (T.-K.L.); (K.K.); (C.-Y.C.); (S.T.E.); (J.-M.A.)
| | - Kara Kassees
- Department of Chemistry and Biochemistry, University of Texas at Dallas, Richardson, TX 75080, USA; (T.-K.L.); (K.K.); (C.-Y.C.); (S.T.E.); (J.-M.A.)
| | - Karla Parra
- Department of Urology, University of Texas Southwestern Medical Center at Dallas, Dallas, TX 75390, USA; (K.P.); (G.S.); (T.C.R.); (X.L.)
| | - Gaurav Sharma
- Department of Urology, University of Texas Southwestern Medical Center at Dallas, Dallas, TX 75390, USA; (K.P.); (G.S.); (T.C.R.); (X.L.)
| | - Tanner C. Reese
- Department of Urology, University of Texas Southwestern Medical Center at Dallas, Dallas, TX 75390, USA; (K.P.); (G.S.); (T.C.R.); (X.L.)
| | - Xihui Liu
- Department of Urology, University of Texas Southwestern Medical Center at Dallas, Dallas, TX 75390, USA; (K.P.); (G.S.); (T.C.R.); (X.L.)
| | - Xue Yang
- Department of Obstetrics and Gynecology, University of Texas Health San Antonio, San Antonio, TX 78229, USA; (A.B.C.); (S.V.); (R.G.); (X.Y.); (B.E.); (U.P.P.); (M.M.); (W.C.A.); (A.B.); (G.R.S.); (P.T.V.); (E.R.K.)
| | - Behnam Ebrahimi
- Department of Obstetrics and Gynecology, University of Texas Health San Antonio, San Antonio, TX 78229, USA; (A.B.C.); (S.V.); (R.G.); (X.Y.); (B.E.); (U.P.P.); (M.M.); (W.C.A.); (A.B.); (G.R.S.); (P.T.V.); (E.R.K.)
| | - Uday P. Pratap
- Department of Obstetrics and Gynecology, University of Texas Health San Antonio, San Antonio, TX 78229, USA; (A.B.C.); (S.V.); (R.G.); (X.Y.); (B.E.); (U.P.P.); (M.M.); (W.C.A.); (A.B.); (G.R.S.); (P.T.V.); (E.R.K.)
| | - Megharani Mahajan
- Department of Obstetrics and Gynecology, University of Texas Health San Antonio, San Antonio, TX 78229, USA; (A.B.C.); (S.V.); (R.G.); (X.Y.); (B.E.); (U.P.P.); (M.M.); (W.C.A.); (A.B.); (G.R.S.); (P.T.V.); (E.R.K.)
| | - William C. Arnold
- Department of Obstetrics and Gynecology, University of Texas Health San Antonio, San Antonio, TX 78229, USA; (A.B.C.); (S.V.); (R.G.); (X.Y.); (B.E.); (U.P.P.); (M.M.); (W.C.A.); (A.B.); (G.R.S.); (P.T.V.); (E.R.K.)
| | - Adriana Baker
- Department of Obstetrics and Gynecology, University of Texas Health San Antonio, San Antonio, TX 78229, USA; (A.B.C.); (S.V.); (R.G.); (X.Y.); (B.E.); (U.P.P.); (M.M.); (W.C.A.); (A.B.); (G.R.S.); (P.T.V.); (E.R.K.)
| | - Chia-Yuan Chen
- Department of Chemistry and Biochemistry, University of Texas at Dallas, Richardson, TX 75080, USA; (T.-K.L.); (K.K.); (C.-Y.C.); (S.T.E.); (J.-M.A.)
| | - Scott Terry Elmore
- Department of Chemistry and Biochemistry, University of Texas at Dallas, Richardson, TX 75080, USA; (T.-K.L.); (K.K.); (C.-Y.C.); (S.T.E.); (J.-M.A.)
| | - Panneerdoss Subbarayalu
- Greehey Children’s Cancer Research Institute, Department of Cell Systems & Anatomy, University of Texas Health San Antonio, San Antonio, TX 78229, USA;
| | - Gangadhara R. Sareddy
- Department of Obstetrics and Gynecology, University of Texas Health San Antonio, San Antonio, TX 78229, USA; (A.B.C.); (S.V.); (R.G.); (X.Y.); (B.E.); (U.P.P.); (M.M.); (W.C.A.); (A.B.); (G.R.S.); (P.T.V.); (E.R.K.)
- Mays Cancer Center, University of Texas Health San Antonio, San Antonio, TX 78229, USA
| | - Philip T. Valente
- Department of Obstetrics and Gynecology, University of Texas Health San Antonio, San Antonio, TX 78229, USA; (A.B.C.); (S.V.); (R.G.); (X.Y.); (B.E.); (U.P.P.); (M.M.); (W.C.A.); (A.B.); (G.R.S.); (P.T.V.); (E.R.K.)
| | - Edward R. Kost
- Department of Obstetrics and Gynecology, University of Texas Health San Antonio, San Antonio, TX 78229, USA; (A.B.C.); (S.V.); (R.G.); (X.Y.); (B.E.); (U.P.P.); (M.M.); (W.C.A.); (A.B.); (G.R.S.); (P.T.V.); (E.R.K.)
| | - Jung-Mo Ahn
- Department of Chemistry and Biochemistry, University of Texas at Dallas, Richardson, TX 75080, USA; (T.-K.L.); (K.K.); (C.-Y.C.); (S.T.E.); (J.-M.A.)
| | - Ratna K. Vadlamudi
- Department of Obstetrics and Gynecology, University of Texas Health San Antonio, San Antonio, TX 78229, USA; (A.B.C.); (S.V.); (R.G.); (X.Y.); (B.E.); (U.P.P.); (M.M.); (W.C.A.); (A.B.); (G.R.S.); (P.T.V.); (E.R.K.)
- Mays Cancer Center, University of Texas Health San Antonio, San Antonio, TX 78229, USA
- Audie L. Murphy Division, South Texas Veterans Health Care System, San Antonio, TX 78229, USA
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