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Romero-Trejo D, Aguiñiga-Sanchez I, Ledesma-Martínez E, Weiss-Steider B, Sierra-Mondragón E, Santiago-Osorio E. Anti-cancer potential of casein and its derivatives: novel strategies for cancer treatment. Med Oncol 2024; 41:200. [PMID: 38990440 PMCID: PMC11239739 DOI: 10.1007/s12032-024-02403-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Accepted: 05/02/2024] [Indexed: 07/12/2024]
Abstract
Cancer is one of the leading causes of death worldwide, with over 10 million fatalities annually. While tumors can be surgically removed and treated with chemotherapy, radiotherapy, immunotherapy, hormonal therapy, or combined therapies, current treatments often result in toxic side effects in normal tissue. Therefore, researchers are actively seeking ways to selectively eliminate cancerous cells, minimizing the toxic side effects in normal tissue. Caseins and its derivatives have shown promising anti-cancer potential, demonstrating antitumor and cytotoxic effects on cells from various tumor types without causing harm to normal cells. Collectively, these data reveals advancements in the study of caseins and their derivative peptides, particularly providing a comprehensive understanding of the molecular mechanism of action in cancer therapy. These mechanisms occur through various signaling pathways, including (i) the increase of interferon-associated STAT1 signaling, (ii) the suppression of stemness-related markers such as CD44, (iii) the attenuation of the STAT3/HIF1-α signaling, (iv) the down-expression of uPAR and PAI-1, (v) the loss of mitochondrial membrane potential and reduced intracellular ATP production, (vi) the increase of caspase-3 activity, and (vii) the suppression of TLR4/NF-кB signaling. Therefore, we conclude that casein could be an effective adjuvant for cancer treatment.
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Affiliation(s)
- Daniel Romero-Trejo
- Hematopoiesis and Leukemia Laboratory, Research Unit on Cell Differentiation and Cancer, Faculty of High Studies Zaragoza, National Autonomous University of Mexico, 09230, Mexico City, Mexico
| | - Itzen Aguiñiga-Sanchez
- Hematopoiesis and Leukemia Laboratory, Research Unit on Cell Differentiation and Cancer, Faculty of High Studies Zaragoza, National Autonomous University of Mexico, 09230, Mexico City, Mexico
- Department of Biomedical Sciences, School of Medicine, Faculty of High Studies Zaragoza, National Autonomous University of Mexico, 56410, Mexico City, Mexico
| | - Edgar Ledesma-Martínez
- Hematopoiesis and Leukemia Laboratory, Research Unit on Cell Differentiation and Cancer, Faculty of High Studies Zaragoza, National Autonomous University of Mexico, 09230, Mexico City, Mexico
| | - Benny Weiss-Steider
- Hematopoiesis and Leukemia Laboratory, Research Unit on Cell Differentiation and Cancer, Faculty of High Studies Zaragoza, National Autonomous University of Mexico, 09230, Mexico City, Mexico
| | - Edith Sierra-Mondragón
- Department of Physiology, Biophysics, and Neurosciences, Center for Research and Advanced Studies of the National Polytechnic Institute, 07360, Mexico City, DF, Mexico
| | - Edelmiro Santiago-Osorio
- Hematopoiesis and Leukemia Laboratory, Research Unit on Cell Differentiation and Cancer, Faculty of High Studies Zaragoza, National Autonomous University of Mexico, 09230, Mexico City, Mexico.
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He Z, Song B, Zhu M, Liu J. Comprehensive pan-cancer analysis of STAT3 as a prognostic and immunological biomarker. Sci Rep 2023; 13:5069. [PMID: 36977736 PMCID: PMC10050087 DOI: 10.1038/s41598-023-31226-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Accepted: 03/08/2023] [Indexed: 03/30/2023] Open
Abstract
Numerous studies have indicated that STAT3 plays a key role in promoting oncogenesis and it is considered a potential therapeutic target for cancer treatment; however, there are no reports on STAT3 using pan-cancer analysis. Therefore, it is important to investigate the role of STAT3 in different types of tumors using pan-cancer analysis. In the present study, we used multiple databases to comprehensively analyze the relationship between STAT3 expression and prognosis, different stages of patients with cancer, investigate the clinical value of STAT3 in predicting prognosis, and the relationship between STAT3 genetic alteration and prognosis, drug sensitivity, and STAT3 expression, to determine whether STAT3 participates in tumor immunity, to provide a rationale for STAT3 as a treatment target for a broad-spectrum malignancies. Our results indicate that STAT3 can serve as a prognostic, sensitivity prediction biomarker and a target for immunotherapy, which has been of great value for pan-cancer treatment. Overall, we found that STAT3 significantly predicted cancer prognosis, drug resistance, and immunotherapy, providing a rationale for further experimental studies.
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Affiliation(s)
- Zhibo He
- The School of Foreign Languages, Jiujiang University, Jiujiang, China
| | - Biao Song
- Medical School, Jiujiang University, Jiujiang, China
| | - Manling Zhu
- Medical School, Jiujiang University, Jiujiang, China
| | - Jun Liu
- Medical School, Jiujiang University, Jiujiang, China.
- Laboratory of Precision Preventive Medicine, Jiujiang University, Jiujiang, China.
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Jung YY, Um JY, Nasif O, Alharbi SA, Sethi G, Ahn KS. Blockage of the JAK/STAT3 signaling pathway in multiple myeloma by leelamine. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2021; 87:153574. [PMID: 34006448 DOI: 10.1016/j.phymed.2021.153574] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 03/30/2021] [Accepted: 04/12/2021] [Indexed: 06/12/2023]
Abstract
BACKGROUND Leelamine (LEE) is a lipophilic diterpene amine phytochemical, which can be naturally extracted from pine's bark trees. It has been extensively studied recently for its promising chemopreventive and anti-cancer effects against various cancers such as that of prostate and breast. HYPOTHESIS We examined the potential impact of LEE in affecting the activation of signal transducer and activator of transcription 3 (STAT3) and promoting apoptosis in human multiple myeloma (MM) cells. METHODS We evaluated the effect of LEE on STAT3 signaling pathway in MM cells by using Western blot analysis and reverse transcription polymerase chain reaction (RT-PCR). Thereafter, apoptosis was evaluated using cell cycle analysis and Annexin V assay. RESULTS We noted that LEE could attenuate the phosphorylation of STAT3 and other up-stream signaling molecules such as JAK1, JAK2, and Src activation in U266 and MM.1S cells. It also diminished STAT3 translocation into the nucleus and enhanced the expression of protein-tyrosine phosphatase epsilon (PTPε). Additionally, LEE caused cell cycle arrest and synergistically augmented the apoptotic actions of bortezomib against MM cells. CONCLUSIONS Our data indicates that LEE could block STAT3 signaling cascade linked to tumorigenesis and can be used in combination with approved anti-cancer agents in attenuating MM growth and survival.
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Affiliation(s)
- Young Yun Jung
- Department of Science in Korean Medicine, Kyung Hee University, 24 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Jae-Young Um
- Department of Science in Korean Medicine, Kyung Hee University, 24 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Omaima Nasif
- Department of Physiology, College of Medicine, King Saud University, [Medical City], King Khalid University Hospital, PO Box-2925, Riyadh -11461, Saudi Arabia
| | - Sulaiman Ali Alharbi
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh -11451, Saudi Arabia
| | - Gautam Sethi
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117600, Singapore.
| | - Kwang Seok Ahn
- Department of Science in Korean Medicine, Kyung Hee University, 24 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea.
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Morshedi K, Borran S, Ebrahimi MS, Masoud Khooy MJ, Seyedi ZS, Amiri A, Abbasi-Kolli M, Fallah M, Khan H, Sahebkar A, Mirzaei H. Therapeutic effect of curcumin in gastrointestinal cancers: A comprehensive review. Phytother Res 2021; 35:4834-4897. [PMID: 34173992 DOI: 10.1002/ptr.7119] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 02/18/2021] [Accepted: 03/26/2021] [Indexed: 12/11/2022]
Abstract
Gastrointestinal (GI) cancers with a high global prevalence are a leading cause of morbidity and mortality. Accordingly, there is a great need to develop efficient therapeutic approaches. Curcumin, a naturally occurring agent, is a promising compound with documented safety and anticancer activities. Recent studies have demonstrated the activity of curcumin in the prevention and treatment of different cancers. According to systematic studies on curcumin use in various diseases, it can be particularly effective in GI cancers because of its high bioavailability in the gastrointestinal tract. Nevertheless, the clinical applications of curcumin are largely limited because of its low solubility and low chemical stability in water. These limitations may be addressed by the use of relevant analogues or novel delivery systems. Herein, we summarize the pharmacological effects of curcumin against GI cancers. Moreover, we highlight the application of curcumin's analogues and novel delivery systems in the treatment of GI cancers.
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Affiliation(s)
- Korosh Morshedi
- School of Medicine, Kashan University of Medical Sciences, Kashan, Iran
| | - Sarina Borran
- School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | | | | | - Zeynab Sadat Seyedi
- Department of Cell and Molecular Biology, Faculty of Chemistry, University of Kashan, Kashan, Iran
| | - Atefeh Amiri
- Department of Medical Biotechnology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mohammad Abbasi-Kolli
- Department of Medical Genetics, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Maryam Fallah
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Iran
| | - Haroon Khan
- Department of Pharmacy, Abdul Wali Khan University, Mardan, Pakistan
| | - Amirhossein Sahebkar
- Applied Biomedical Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.,Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Hamed Mirzaei
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Iran
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Xu S, Yu C, Ma X, Li Y, Shen Y, Chen Y, Huang S, Zhang T, Deng W, Wang Y. IL-6 promotes nuclear translocation of HIF-1α to aggravate chemoresistance of ovarian cancer cells. Eur J Pharmacol 2021; 894:173817. [PMID: 33345849 DOI: 10.1016/j.ejphar.2020.173817] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 11/28/2020] [Accepted: 12/07/2020] [Indexed: 12/19/2022]
Abstract
The inflammatory milieu in tumor modulates the resistance to the conventional antitumoral therapies. Interleukin-6 (IL-6), a pleiotropic pro-inflammatory cytokine and a crucial mediator of tumor development, has been targeted as a therapeutic strategy to overcome chemoresistance in the treatment of tumors. The protein levels and nuclear translocation of HIFs (hypoxia-inducible factors), such as HIF-1α, are linked to the drug resistance of tumor cells. However, whether IL-6 promotes the nuclear translocation of HIF-1α and the related mechanism remain to be investigated. We applied two ovarian cancer (OvCa) cell lines, A2780 cells and SKOV3 cells for the in vivo and in vitro studies. We found that IL-6 up-regulates the HIF-1α expression via the signal transducer and activator of transcription 3 (STAT3) signaling under hypoxia in either endogenous or exogenous way, and then we proved that IL-6 enhances the transcriptional activity of HIF-1α via the STAT3 signaling. Further mechanism research revealed that IL-6 promotes the nuclear translocation of HIF-1α through the STAT3 signaling under hypoxia. Proliferation assay and apoptosis assay were applied and proved that IL-6 enhances the chemoresistance of OvCa cells against cisplatin through the upregulation of HIF-1α via the STAT3 signaling in vitro. The In vivo studies confirmed the effect of IL-6 in increasing the chemoresistance of OvCa cells against cisplatin through the IL-6/STAT3/HIF-1α loop in the animal models. Our data elucidates the explicit mechanism of IL-6/STAT3/HIF-1α loop in OvCa and also provides new insights into the development of different approaches for the inflammation-induced and hypoxia-induced resistance in tumor therapies.
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Affiliation(s)
- Shiwen Xu
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China; Tianjin Niusai Biotechnology Co., Ltd, Tianjin, 300381, China
| | - Chunyan Yu
- Department of Immunology, Tianjin Key Laboratory of Cellular and Molecular Immunology, Key Laboratory of Diseases and Microenvironment of Ministry of Education of China, Tianjin Medical University, Tianjin, 300070, China
| | - Xiaoxia Ma
- Tianjin Medical University General Hospital Airport Hospital, Tianjin, 300308, China
| | - Yan Li
- Department of Immunology, Tianjin Key Laboratory of Cellular and Molecular Immunology, Key Laboratory of Diseases and Microenvironment of Ministry of Education of China, Tianjin Medical University, Tianjin, 300070, China
| | - Yangyang Shen
- Department of Immunology, Tianjin Key Laboratory of Cellular and Molecular Immunology, Key Laboratory of Diseases and Microenvironment of Ministry of Education of China, Tianjin Medical University, Tianjin, 300070, China
| | - Yan Chen
- Ningbo Hangzhou Bay Hospital, Ningbo, Zhejiang Province, 315336, China
| | - Suhui Huang
- Department of Pathogenic Biology and Immunology, Logistics University of Chinese People's Armed Police Forces, Tianjin, 300309, China
| | - Tongshuo Zhang
- Department of Pathogenic Biology and Immunology, Logistics University of Chinese People's Armed Police Forces, Tianjin, 300309, China
| | - Weimin Deng
- Department of Immunology, Tianjin Key Laboratory of Cellular and Molecular Immunology, Key Laboratory of Diseases and Microenvironment of Ministry of Education of China, Tianjin Medical University, Tianjin, 300070, China.
| | - Yue Wang
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China.
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Pawlonka J, Rak B, Ambroziak U. The regulation of cyclin D promoters - review. Cancer Treat Res Commun 2021; 27:100338. [PMID: 33618151 DOI: 10.1016/j.ctarc.2021.100338] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 02/06/2021] [Accepted: 02/15/2021] [Indexed: 11/25/2022]
Abstract
Cyclins are key regulators of cell cycle progression and survival. Particularly cyclins D (cyclin D1, D2, and D3) act in response to the mitogenic stimulation and are pivotal mediators between proliferative pathways and the nuclear cell cycle machinery. Dysregulation of cyclins expression results in impaired development, abnormal cell growth or tumorigenesis. In this review we summarize current knowledge about regulatory role of the cyclin D promoters, transcriptional factors: regulators, co-activators and adaptor proteins necessary to their activation. We focused on the intracellular signaling pathways vital to cell growth, differentiation and apoptosis including transcription factor families: activator protein 1 (AP1), nuclear factor (NFκB), signal transducer and activator of transcription (STAT), cAMP response element-binding protein (CREB) and Sp/NF-Y, with a special insight into the tissue specific cyclin representation.
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Affiliation(s)
- Jan Pawlonka
- Department of Internal Medicine and Endocrinology, Medical University of Warsaw, Warsaw
| | - Beata Rak
- Department of Internal Medicine and Endocrinology, Medical University of Warsaw, Warsaw; Department of Genomic Medicine, Medical University of Warsaw, Warsaw.
| | - Urszula Ambroziak
- Department of Internal Medicine and Endocrinology, Medical University of Warsaw, Warsaw
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7
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Jung YY, Ko JH, Um JY, Chinnathambi A, Alharbi SA, Sethi G, Ahn KS. LDL cholesterol promotes the proliferation of prostate and pancreatic cancer cells by activating the STAT3 pathway. J Cell Physiol 2020; 236:5253-5264. [PMID: 33368314 DOI: 10.1002/jcp.30229] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2019] [Revised: 12/04/2020] [Accepted: 12/08/2020] [Indexed: 12/11/2022]
Abstract
Hypercholesterolemia has been found to be closely linked with a significant increase in both cancer incidence and mortality. However, the exact correlation between serum cholesterol levels and cancer has not been completely deciphered. Here we analyzed the effect of low-density lipoprotein (LDL) cholesterol on prostate and pancreatic cancer cells. We noted that LDL induced a substantial STAT3 activation and JAK1, JAK2, Src activation in diverse prostate and pancreatic tumor cells. Moreover, LDL promoted cancer cell proliferation, migration, and invasion as well as upregulated the expression of diverse oncogenic gene products. However, deletion of LDL-activated STAT3 in LNCaP and PANC-1 cells and reduced LDL-induced cell viability. Simvastatin (SV) treatment also alleviated LDL-induced cell viability and migration ability in both the prostate and pancreatic tumor cells. These results demonstrate that LDL-induced STAT3 activation may exert a profound effect on the proliferation and survival of tumor cells.
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Affiliation(s)
- Young Yun Jung
- Department of Science in Korean Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Jeong-Hyeon Ko
- Department of Science in Korean Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Jae-Young Um
- Department of Science in Korean Medicine, Kyung Hee University, Seoul, Republic of Korea
| | | | - Sulaiman Ali Alharbi
- Department of Botany and Microbiology, King Saud University, Riyadh, Kingdom of Saudi Arabia
| | - Gautam Sethi
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Kwang Seok Ahn
- Department of Science in Korean Medicine, Kyung Hee University, Seoul, Republic of Korea
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8
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Anti-Tumor Effects of Astaxanthin by Inhibition of the Expression of STAT3 in Prostate Cancer. Mar Drugs 2020; 18:md18080415. [PMID: 32784629 PMCID: PMC7459748 DOI: 10.3390/md18080415] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 07/25/2020] [Accepted: 07/29/2020] [Indexed: 12/16/2022] Open
Abstract
Astaxanthin is a natural product gaining increasing attention due to its safety and anti-cancer properties. In this study, we investigated the mechanisms of the anti-cancer effects of astaxanthin on prostate cancer (PCa) cell lines using aggressive PCa DU145 cells. Also an instantaneous silenced cell line (si-STAT3) derived from DU145 and a control cell line (si-NK) were used for the MTT and colony formation assays to determine the role of astaxanthin in proliferation and colony formation abilities. Flow cytometry assays were used to detect the apoptosis of tumor cells. Migration and invasion assays detected the weakening of the respective abilities. Western blot and RT-PCR tests detected the levels of STAT3 protein and mRNA. Astaxanthin resulted in suppression of the proliferation of DU145 cells and the level of STAT3. The treatment of DU145 cells with astaxanthin decreased the cloning ability, increased the apoptosis percentage and weakened the abilities of migration and invasion of the cells. Furthermore, astaxanthin reduced the expression of STAT3 at protein and mRNA levels. The effects were enhanced when astaxanthin and si-STAT3 were combined. The results of animal experiments were consistent with the results in cells. Thus, astaxanthin inhibits the proliferation of DU145 cells by reducing the expression of STAT3.
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Gong K, Dong Y, Wang L, Duan Y, Yu J, Sun Y, Bai M, Duan Y. Nanoparticle BAF312@CaP-NP Overcomes Sphingosine-1-Phosphate Receptor-1-Mediated Chemoresistance Through Inhibiting S1PR1/P-STAT3 Axis in Ovarian Carcinoma. Int J Nanomedicine 2020; 15:5561-5571. [PMID: 32801704 PMCID: PMC7414939 DOI: 10.2147/ijn.s248667] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Accepted: 06/10/2020] [Indexed: 12/21/2022] Open
Abstract
Purpose Platinum/paclitaxel-based chemotherapy is the strategy for ovarian cancer, but chemoresistance, inherent or acquired, occurs and hinders therapy. Therefore, further understanding of the mechanisms of drug resistance and adoption of novel therapeutic strategies are urgently needed. Methods In this study, we report that sphingosine-1-phosphate receptor-1 (S1PR1)-mediated chemoresistance for ovarian cancer. Then we developed nanoparticles with a hydrophilic PEG2000 chain and a hydrophobic DSPE and biodegradable CaP (calcium ions and phosphate ions) shell with pH sensitivity as a delivery system (CaP-NPs) to carry BAF312, a selective antagonist of S1PR1 (BAF312@CaP-NPs), to overcome the cisplatin (DDP) resistance of the ovarian cancer cell line SKOV3DR. Results We found that S1PR1 affected acquired chemoresistance in ovarian cancer by increasing the phosphorylated-signal transduction and activators of transcription 3 (P-STAT3) level. The mean size and zeta potential of BAF312@CaP-NPs were 116 ± 4.341 nm and −9.67 ± 0.935 mV, respectively. The incorporation efficiency for BAF312 in the CaP-NPs was 76.1%. The small size of the nanoparticles elevated their enrichment in the tumor, and the degradable CaP shell with smart pH sensitivity of the BAF312@CaP-NPs ensured the release of BAF312 in the acidic tumor niche. BAF312@CaP-NPs caused substantial cytotoxicity in DDP-resistant ovarian cancer cells by downregulating S1PR1 and P-STAT3 levels. Conclusion We found that BAF312@CaP-NPs act as an effective and selective delivery system for overcoming S1PR1-mediated chemoresistance in ovarian carcinoma by inhibiting S1PR1 and P-STAT3.
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Affiliation(s)
- Ke Gong
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200032, People's Republic of China
| | - Yang Dong
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200032, People's Republic of China
| | - Liting Wang
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200032, People's Republic of China
| | - Yi Duan
- Department of Clinical Medicine, North Sichuan Medical College, Sichuan 637100, People's Republic of China
| | - Jian Yu
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200032, People's Republic of China
| | - Ying Sun
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200032, People's Republic of China
| | - Min Bai
- Department of Ultrasound, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200080, People's Republic of China
| | - Yourong Duan
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200032, People's Republic of China
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Abstract
Sphingosine-1-phosphate (S1P) can regulate several physiological and pathological processes. S1P signaling via its cell surface receptor S1PR1 has been shown to enhance tumorigenesis and stimulate growth, expansion, angiogenesis, metastasis, and survival of cancer cells. S1PR1-mediated tumorigenesis is supported and amplified by activation of downstream effectors including STAT3, interleukin-6, and NF-κB networks. S1PR1 signaling can also trigger various other signaling pathways involved in carcinogenesis including activation of PI3K/AKT, MAPK/ERK1/2, Rac, and PKC/Ca, as well as suppression of cyclic adenosine monophosphate (cAMP). It also induces immunological tolerance in the tumor microenvironment, while the immunosuppressive function of S1PR1 can also lead to the generation of pre-metastatic niches. Some tumor cells upregulate S1PR1 signaling pathways, which leads to drug resistant cancer cells, mainly through activation of STAT3. This signaling pathway is also implicated in some inflammatory conditions leading to the instigation of inflammation-driven cancers. Furthermore, it can also increase survival via induction of anti-apoptotic pathways, for instance, in breast cancer cells. Therefore, S1PR1 and its signaling pathways can be considered as potential anti-tumor therapeutic targets, alone or in combination therapies. Given the oncogenic nature of S1PR1 and its distribution in a variety of cancer cell types along with its targeting advantages over other molecules of this family, S1PR1 should be considered a favorable target in therapeutic approaches to cancer. This review describes the role of S1PR1 in cancer development and progression, specifically addressing breast cancer, glioma, and hematopoietic malignancies. We also discuss the potential use of S1P signaling modulators as therapeutic targets in cancer therapy.
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Liang R, Chen X, Chen L, Wan F, Chen K, Sun Y, Zhu X. STAT3 signaling in ovarian cancer: a potential therapeutic target. J Cancer 2020; 11:837-848. [PMID: 31949487 PMCID: PMC6959025 DOI: 10.7150/jca.35011] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Accepted: 09/08/2019] [Indexed: 02/06/2023] Open
Abstract
Accumulating evidence has shown that Signal Transducer and Activator of Transcription 3 (STAT3) is thought to be a promising target for cancer therapy as STAT3 is frequently overexpressed in a wide range of cancer cells as well as clinical specimens, promoting tumor progression. It is widely accepted that STAT3 regulates a variety of cellular processes, such as tumor cell growth, survival, invasion, cancer stem cell-like characteristic, angiogenesis and drug-resistance. In this review, we focus on the role of STAT3 in tumorigenesis in ovarian cancer and discuss the existing inhibitors of STAT3 signaling that can be promisingly developed as the strategies for ovarian cancer therapy.
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Affiliation(s)
- Renba Liang
- Department of Radiation Oncology, Guangxi Medical University Cancer Hospital and Cancer Institute of Guangxi Zhuang Autonomous Region, Nanning, Guangxi, P.R. China
| | - Xishan Chen
- Department of Radiation Oncology, Guangxi Medical University Cancer Hospital and Cancer Institute of Guangxi Zhuang Autonomous Region, Nanning, Guangxi, P.R. China
| | - Li Chen
- Department of Radiation Oncology, Guangxi Medical University Cancer Hospital and Cancer Institute of Guangxi Zhuang Autonomous Region, Nanning, Guangxi, P.R. China
| | - Fangzhu Wan
- Department of Radiation Oncology, Guangxi Medical University Cancer Hospital and Cancer Institute of Guangxi Zhuang Autonomous Region, Nanning, Guangxi, P.R. China
| | - Kaihua Chen
- Department of Radiation Oncology, Guangxi Medical University Cancer Hospital and Cancer Institute of Guangxi Zhuang Autonomous Region, Nanning, Guangxi, P.R. China
| | - Yongchu Sun
- Department of Radiation Oncology, Guangxi Medical University Cancer Hospital and Cancer Institute of Guangxi Zhuang Autonomous Region, Nanning, Guangxi, P.R. China
| | - Xiaodong Zhu
- Department of Radiation Oncology, Guangxi Medical University Cancer Hospital and Cancer Institute of Guangxi Zhuang Autonomous Region, Nanning, Guangxi, P.R. China
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12
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Wu CJ, Sundararajan V, Sheu BC, Huang RYJ, Wei LH. Activation of STAT3 and STAT5 Signaling in Epithelial Ovarian Cancer Progression: Mechanism and Therapeutic Opportunity. Cancers (Basel) 2019; 12:cancers12010024. [PMID: 31861720 PMCID: PMC7017004 DOI: 10.3390/cancers12010024] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2019] [Revised: 12/13/2019] [Accepted: 12/17/2019] [Indexed: 12/12/2022] Open
Abstract
Epithelial ovarian cancer (EOC) is the most lethal of all gynecologic malignancies. Despite advances in surgical and chemotherapeutic options, most patients with advanced EOC have a relapse within three years of diagnosis. Unfortunately, recurrent disease is generally not curable. Recent advances in maintenance therapy with anti-angiogenic agents or Poly ADP-ribose polymerase (PARP) inhibitors provided a substantial benefit concerning progression-free survival among certain women with advanced EOC. However, effective treatment options remain limited in most recurrent cases. Therefore, validated novel molecular therapeutic targets remain urgently needed in the management of EOC. Signal transducer and activator of transcription-3 (STAT3) and STAT5 are aberrantly activated through tyrosine phosphorylation in a wide variety of cancer types, including EOC. Extrinsic tumor microenvironmental factors in EOC, such as inflammatory cytokines, growth factors, hormones, and oxidative stress, can activate STAT3 and STAT5 through different mechanisms. Persistently activated STAT3 and, to some extent, STAT5 increase EOC tumor cell proliferation, survival, self-renewal, angiogenesis, metastasis, and chemoresistance while suppressing anti-tumor immunity. By doing so, the STAT3 and STAT5 activation in EOC controls properties of both tumor cells and their microenvironment, driving multiple distinct functions during EOC progression. Clinically, increasing evidence indicates that the activation of the STAT3/STAT5 pathway has significant correlation with reduced survival of recurrent EOC, suggesting the importance of STAT3/STAT5 as potential therapeutic targets for cancer therapy. This review summarizes the distinct role of STAT3 and STAT5 activities in the progression of EOC and discusses the emerging therapies specifically targeting STAT3 and STAT5 signaling in this disease setting.
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Affiliation(s)
- Chin-Jui Wu
- Department of Obstetrics & Gynecology, National Taiwan University Hospital, College of Medicine, National Taiwan University, Taipei 10002, Taiwan; (C.-J.W.); (B.-C.S.)
| | - Vignesh Sundararajan
- Cancer Science Institute of Singapore, National University of Singapore, Center for Translational Medicine, Singapore 117599, Singapore;
| | - Bor-Ching Sheu
- Department of Obstetrics & Gynecology, National Taiwan University Hospital, College of Medicine, National Taiwan University, Taipei 10002, Taiwan; (C.-J.W.); (B.-C.S.)
| | - Ruby Yun-Ju Huang
- Department of Obstetrics and Gynaecology, National University of Singapore, Singapore 119077, Singapore;
- School of Medicine, College of Medicine, National Taiwan University, Taipei 10051, Taiwan
| | - Lin-Hung Wei
- Department of Obstetrics & Gynecology, National Taiwan University Hospital, College of Medicine, National Taiwan University, Taipei 10002, Taiwan; (C.-J.W.); (B.-C.S.)
- Correspondence: ; Tel.: +886-2-2312-3456 (ext. 71570); Fax: +886-2-2311-4965
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13
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Aotsuka A, Matsumoto Y, Arimoto T, Kawata A, Ogishima J, Taguchi A, Tanikawa M, Sone K, Mori-Uchino M, Tsuruga T, Oda K, Kawana K, Osuga Y, Fujii T. Interleukin-17 is associated with expression of programmed cell death 1 ligand 1 in ovarian carcinoma. Cancer Sci 2019; 110:3068-3078. [PMID: 31432577 PMCID: PMC6778630 DOI: 10.1111/cas.14174] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2019] [Revised: 07/27/2019] [Accepted: 08/14/2019] [Indexed: 12/28/2022] Open
Abstract
The programmed cell death 1/programmed cell death 1 ligand 1 pathway was successfully targeted in cancer immunotherapy. Elevated interleukin-17 (IL-17), which is known in autoimmune diseases, has recently been recognized in cancer patients. We investigated the role of IL-17 in the regulation of expression of programmed cell death 1 ligand 1 in ovarian cancer by evaluating changes in the number of IL-17-producing cluster of differentiation 4 helper T cells (Th17) and γδT cells (γδT17) in PBMC of 52 gynecological cancer patients (including 30 ovarian cancer patients) and 18 healthy controls. The occupancy ratio of Th17 and γδT17 was higher in ovarian cancer and endometrial cancer patients than in controls, determined by multi-color flow cytometry (Th17: P < 0.0001 and P = 0.0002, respectively; γδT17: P = 0.0020 and P = 0.0084, respectively). IL-17 mRNA level was elevated in PBMC of ovarian cancer patients (P = 0.0029), as measured by RT-PCR. The neutrophil-to-lymphocyte ratio, which is a prognostic biomarker of ovarian cancer, correlated with Th17 occupancy ratio in patients (P = 0.0068). We found that programmed cell death 1 ligand 1 expression and its associated factors (IL-6 and phospho-signal transducer and activator of transcription 3) were induced by IL-17 in an ovarian cancer cell line. These results suggest that increased Th17 counts and IL-17 level, which correlated with high neutrophil-to-lymphocyte ratio and programmed cell death 1 ligand 1 expression, are potential biomarkers for poor prognosis in ovarian cancer and likely indications for application of programmed cell death 1 ligand 1 pathway inhibitors.
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Affiliation(s)
- Aeri Aotsuka
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Yoko Matsumoto
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | | | - Akira Kawata
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Juri Ogishima
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Ayumi Taguchi
- Tokyo Metropolitan Cancer and Infectious Diseases Center, Komagome Hospital, Bunkyo-ku, Tokyo, Japan
| | - Michihiro Tanikawa
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Kenbun Sone
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Mayuyo Mori-Uchino
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Tetsushi Tsuruga
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Katsutoshi Oda
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Kei Kawana
- Nihon University School of Medicine, Itabashi-ku, Tokyo, Japan
| | - Yutaka Osuga
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Tomoyuki Fujii
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
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14
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Nakayama K, Kataoka N. Regulation of Gene Expression under Hypoxic Conditions. Int J Mol Sci 2019; 20:ijms20133278. [PMID: 31277312 PMCID: PMC6651685 DOI: 10.3390/ijms20133278] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 06/28/2019] [Accepted: 07/02/2019] [Indexed: 02/07/2023] Open
Abstract
Eukaryotes are often subjected to different kinds of stress. In order to adjust to such circumstances, eukaryotes activate stress–response pathways and regulate gene expression. Eukaryotic gene expression consists of many different steps, including transcription, RNA processing, RNA transport, and translation. In this review article, we focus on both transcriptional and post-transcriptional regulations of gene expression under hypoxic conditions. In the first part of the review, transcriptional regulations mediated by various transcription factors including Hypoxia-Inducible Factors (HIFs) are described. In the second part, we present RNA splicing regulations under hypoxic conditions, which are mediated by splicing factors and their kinases. This work summarizes and discusses the emerging studies of those two gene expression machineries under hypoxic conditions.
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Affiliation(s)
- Koh Nakayama
- Oxygen Biology Laboratory, Medical Research Institute, Tokyo Medical and Dental University (TMDU), Tokyo 113-8510, Japan.
| | - Naoyuki Kataoka
- Laboratory of Cell Regulation, Departments of Applied Animal Sciences and Applied Biological Chemistry, Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan.
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15
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Mortezaee K, Najafi M, Farhood B, Ahmadi A, Potes Y, Shabeeb D, Musa AE. Modulation of apoptosis by melatonin for improving cancer treatment efficiency: An updated review. Life Sci 2019; 228:228-241. [DOI: 10.1016/j.lfs.2019.05.009] [Citation(s) in RCA: 62] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Revised: 04/29/2019] [Accepted: 05/06/2019] [Indexed: 12/14/2022]
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16
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Liu Y, Wang X, Zeng S, Zhang X, Zhao J, Zhang X, Chen X, Yang W, Yang Y, Dong Z, Zhu J, Xu X, Tian F. The natural polyphenol curcumin induces apoptosis by suppressing STAT3 signaling in esophageal squamous cell carcinoma. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2018; 37:303. [PMID: 30518397 PMCID: PMC6280482 DOI: 10.1186/s13046-018-0959-0] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Accepted: 11/13/2018] [Indexed: 12/12/2022]
Abstract
Background We and others have previously shown that the STAT3 signaling pathway is activated in some esophageal squamous cell carcinoma (ESCC) cells and is required for the survival and growth of these primary ESCC-derived xenografts. It has also been shown that the natural polyphenol curcumin is an effective anti-tumor agent. Methods Luciferase assay and immunoblotting were performed to examine whether curcumin suppressed STAT3 signaling. CCK-8 assay and xenografts were utilized for analyzing ESCC cell growth in culture and mice. Soft agar assay was carried out to determine the colony formation ability of ESCC cells in the presence or absence of curcumin. Cell death and cell cycle were assessed by In CELL Analyzer 2000. Immunohistochemistry and TUNEL assay were used for detecting apoptosis in ESCC tisuses. Molecular docking was performed to evaluate the interaction of curcumin with JAK2. JAK2 activity was assessed using an in vitro cell-free system. HE staining was used to evaluate the ESCC tissues. Results The natural polyphenol curcumin inhibited STAT3 phosphorylation rapidly and blocked STAT3-mediated signaling in ESCC cells. It also induced growth arrest and apoptosis in cultured ESCC cells, which were attenuated by enforced expression of STAT3. Furthermore, curcumin preferentially blocked the growth of primary ESCC-derived xenografts that harbored activated STAT3. Conclusions Curcumin is able to exert anti-tumor action through inhibiting the STAT3 signaling pathway. Giving its wide use in traditional medicines with low toxicity and few adverse reactions, it is conceivable that curcumin might be further explored as a unique STAT3 inhibitor for anti-cancer therapies.
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Affiliation(s)
- Ying Liu
- Department of Pathophysiology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan, 450001, People's Republic of China.,Henan Provincial Cooperative Innovation Center for Cancer Chemoprevention, Zhengzhou, Henan, 450001, People's Republic of China.,Clinical Research Center, People's Hospital of Zhengzhou, Zhengzhou, Henan, 450001, People's Republic of China
| | - Xinhua Wang
- Department of Histology and Embryology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan, 450001, People's Republic of China
| | - Shuang Zeng
- Department of Pathophysiology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan, 450001, People's Republic of China.,Henan Provincial Cooperative Innovation Center for Cancer Chemoprevention, Zhengzhou, Henan, 450001, People's Republic of China
| | - Xiane Zhang
- Department of Pathophysiology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan, 450001, People's Republic of China.,Henan Provincial Cooperative Innovation Center for Cancer Chemoprevention, Zhengzhou, Henan, 450001, People's Republic of China
| | - Jimin Zhao
- Department of Pathophysiology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan, 450001, People's Republic of China.,Henan Provincial Cooperative Innovation Center for Cancer Chemoprevention, Zhengzhou, Henan, 450001, People's Republic of China
| | - Xiaoyan Zhang
- Department of Pathophysiology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan, 450001, People's Republic of China.,Henan Provincial Cooperative Innovation Center for Cancer Chemoprevention, Zhengzhou, Henan, 450001, People's Republic of China
| | - Xinhuan Chen
- Department of Pathophysiology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan, 450001, People's Republic of China.,Henan Provincial Cooperative Innovation Center for Cancer Chemoprevention, Zhengzhou, Henan, 450001, People's Republic of China
| | - Wanjing Yang
- Department of Pathophysiology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan, 450001, People's Republic of China.,Henan Provincial Cooperative Innovation Center for Cancer Chemoprevention, Zhengzhou, Henan, 450001, People's Republic of China
| | - Yili Yang
- Suzhou Institute of Systems Medicine, Center for Systems Medicine, Chinese Academy of Medical Sciences, Suzhou, Jiangsu, 215123, People's Republic of China
| | - Ziming Dong
- Department of Pathophysiology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan, 450001, People's Republic of China.,Henan Provincial Cooperative Innovation Center for Cancer Chemoprevention, Zhengzhou, Henan, 450001, People's Republic of China
| | - Jingyu Zhu
- School of Medicine and Pharmaceutics, Jiangnan University, Wuxi, Jiangsu, 214000, People's Republic of China
| | - Xin Xu
- Department of Pathophysiology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan, 450001, People's Republic of China. .,Suzhou Institute of Systems Medicine, Center for Systems Medicine, Chinese Academy of Medical Sciences, Suzhou, Jiangsu, 215123, People's Republic of China.
| | - Fang Tian
- Department of Pathophysiology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan, 450001, People's Republic of China. .,Henan Provincial Cooperative Innovation Center for Cancer Chemoprevention, Zhengzhou, Henan, 450001, People's Republic of China.
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17
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Reilley MJ, McCoon P, Cook C, Lyne P, Kurzrock R, Kim Y, Woessner R, Younes A, Nemunaitis J, Fowler N, Curran M, Liu Q, Zhou T, Schmidt J, Jo M, Lee SJ, Yamashita M, Hughes SG, Fayad L, Piha-Paul S, Nadella MVP, Xiao X, Hsu J, Revenko A, Monia BP, MacLeod AR, Hong DS. STAT3 antisense oligonucleotide AZD9150 in a subset of patients with heavily pretreated lymphoma: results of a phase 1b trial. J Immunother Cancer 2018; 6:119. [PMID: 30446007 PMCID: PMC6240242 DOI: 10.1186/s40425-018-0436-5] [Citation(s) in RCA: 166] [Impact Index Per Article: 27.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Accepted: 10/28/2018] [Indexed: 01/05/2023] Open
Abstract
Background The Janus kinase (JAK) and signal transduction and activation of transcription (STAT) signaling pathway is an attractive target in multiple cancers. Activation of the JAK-STAT pathway is important in both tumorigenesis and activation of immune responses. In diffuse large B-cell lymphoma (DLBCL), the transcription factor STAT3 has been associated with aggressive disease phenotype and worse overall survival. While multiple therapies inhibit upstream signaling, there has been limited success in selectively targeting STAT3 in patients. Antisense oligonucleotides (ASOs) represent a compelling therapeutic approach to target difficult to drug proteins such as STAT3 through of mRNA targeting. We report the evaluation of a next generation STAT3 ASO (AZD9150) in a non-Hodgkin’s lymphoma population, primarily consisting of patients with DLBCL. Methods Patients with relapsed or treatment refractory lymphoma were enrolled in this expansion cohort. AZD9150 was administered at 2 mg/kg and the 3 mg/kg (MTD determined by escalation cohort) dose levels with initial loading doses in the first week on days 1, 3, and 5 followed by weekly dosing. Patients were eligible to remain on therapy until unacceptable toxicity or progression. Blood was collected pre- and post-treatment for analysis of peripheral immune cells. Results Thirty patients were enrolled, 10 at 2 mg/kg and 20 at 3 mg/kg dose levels. Twenty-seven patients had DLBCL. AZD9150 was safe and well tolerated at both doses. Common drug-related adverse events included transaminitis, fatigue, and thrombocytopenia. The 3 mg/kg dose level is the recommended phase 2 dose. All responses were seen among DLBCL patients, including 2 complete responses with median duration of response 10.7 months and 2 partial responses. Peripheral blood cell analysis of three patients without a clinical response to therapy revealed a relative increase in proportion of macrophages, CD4+, and CD8+ T cells; this trend did not reach statistical significance. Conclusions AZD9150 was well tolerated and demonstrated efficacy in a subset of heavily pretreated patients with DLBCL. Studies in combination with checkpoint immunotherapies are ongoing. Trial registration Registered at ClinicalTrials.gov: NCT01563302. First submitted 2/13/2012. Electronic supplementary material The online version of this article (10.1186/s40425-018-0436-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Matthew J Reilley
- Division of Hematology/Oncology, University of Virginia Health System, Charlottesville, VA, USA
| | - Patricia McCoon
- Oncology, IMED Biotech Unit, AstraZeneca Pharmaceuticals, Waltham, MA, USA
| | - Carl Cook
- Oncology, IMED Biotech Unit, AstraZeneca Pharmaceuticals, Waltham, MA, USA
| | - Paul Lyne
- Oncology, IMED Biotech Unit, AstraZeneca Pharmaceuticals, Waltham, MA, USA
| | | | - Youngsoo Kim
- Department of Antisense Drug Discovery, Ionis Pharmaceuticals, Inc., Carlsbad, CA, USA
| | - Richard Woessner
- Oncology, IMED Biotech Unit, AstraZeneca Pharmaceuticals, Waltham, MA, USA
| | - Anas Younes
- Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | | | - Nathan Fowler
- Department of Investigational Cancer Therapeutics, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd., Unit 0455, Houston, TX, 77030, USA
| | - Michael Curran
- Department of Investigational Cancer Therapeutics, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd., Unit 0455, Houston, TX, 77030, USA
| | - Qinying Liu
- Department of Investigational Cancer Therapeutics, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd., Unit 0455, Houston, TX, 77030, USA
| | - Tianyuan Zhou
- Department of Antisense Drug Discovery, Ionis Pharmaceuticals, Inc., Carlsbad, CA, USA
| | - Joanna Schmidt
- Department of Antisense Drug Discovery, Ionis Pharmaceuticals, Inc., Carlsbad, CA, USA
| | - Minji Jo
- Department of Antisense Drug Discovery, Ionis Pharmaceuticals, Inc., Carlsbad, CA, USA
| | - Samantha J Lee
- Department of Antisense Drug Discovery, Ionis Pharmaceuticals, Inc., Carlsbad, CA, USA
| | - Mason Yamashita
- Department of Antisense Drug Discovery, Ionis Pharmaceuticals, Inc., Carlsbad, CA, USA
| | - Steven G Hughes
- Department of Antisense Drug Discovery, Ionis Pharmaceuticals, Inc., Carlsbad, CA, USA
| | - Luis Fayad
- Department of Investigational Cancer Therapeutics, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd., Unit 0455, Houston, TX, 77030, USA
| | - Sarina Piha-Paul
- Department of Investigational Cancer Therapeutics, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd., Unit 0455, Houston, TX, 77030, USA
| | - Murali V P Nadella
- Drug Safety and Metabolism, IMED Biotech Unit, AstraZeneca Pharmaceuticals, Waltham, MA, USA
| | - Xiaokun Xiao
- Department of Antisense Drug Discovery, Ionis Pharmaceuticals, Inc., Carlsbad, CA, USA
| | - Jeff Hsu
- Department of Antisense Drug Discovery, Ionis Pharmaceuticals, Inc., Carlsbad, CA, USA
| | - Alexey Revenko
- Department of Antisense Drug Discovery, Ionis Pharmaceuticals, Inc., Carlsbad, CA, USA
| | - Brett P Monia
- Department of Antisense Drug Discovery, Ionis Pharmaceuticals, Inc., Carlsbad, CA, USA
| | - A Robert MacLeod
- Department of Antisense Drug Discovery, Ionis Pharmaceuticals, Inc., Carlsbad, CA, USA
| | - David S Hong
- Department of Investigational Cancer Therapeutics, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd., Unit 0455, Houston, TX, 77030, USA.
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18
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Dorayappan KDP, Wanner R, Wallbillich JJ, Saini U, Zingarelli R, Suarez AA, Cohn DE, Selvendiran K. Hypoxia-induced exosomes contribute to a more aggressive and chemoresistant ovarian cancer phenotype: a novel mechanism linking STAT3/Rab proteins. Oncogene 2018; 37:3806-3821. [PMID: 29636548 PMCID: PMC6043362 DOI: 10.1038/s41388-018-0189-0] [Citation(s) in RCA: 183] [Impact Index Per Article: 30.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Revised: 12/13/2017] [Accepted: 02/07/2018] [Indexed: 12/21/2022]
Abstract
Hypoxia-mediated tumor progression, metastasis, and drug resistance are major clinical challenges in ovarian cancer. Exosomes released in the hypoxic tumor microenvironment may contribute to these challenges by transferring signaling proteins between cancer cells and normal cells. We observed that ovarian cancer cells exposed to hypoxia significantly increased their exosome release by upregulating Rab27a, downregulating Rab7, LAMP1/2, NEU-1, and also by promoting a more secretory lysosomal phenotype. STAT3 knockdown in ovarian cancer cells reduced exosome release by altering the Rab family proteins Rab7 and Rab27a under hypoxic conditions. We also found that exosomes from patient-derived ascites ovarian cancer cell lines cultured under hypoxic conditions carried more potent oncogenic proteins-STAT3 and FAS that are capable of significantly increasing cell migration/invasion and chemo-resistance in vitro and tumor progression/metastasis in vivo. Hypoxic ovarian cancer cells derived exosomes (HEx) are proficient in re-programming the immortalized fallopian tube secretory epithelial cells (FT) to become pro-tumorigenic in mouse fallopian tubes. In addition, cisplatin efflux via exosomes was significantly increased in ovarian cancer cells under hypoxic conditions. Co-culture of HEx with tumor cells led to significantly decreased dsDNA damage and increased cell survival in response to cisplatin treatment. Blocking exosome release by known inhibitor Amiloride or STAT3 inhibitor and treating with cisplatin resulted in a significant increase in apoptosis, decreased colony formation, and proliferation. Our results demonstrate that HEx are more potent in augmenting metastasis/chemotherapy resistance in ovarian cancer and may serve as a novel mechanism for tumor metastasis, chemo-resistance, and a point of intervention for improving clinical outcomes.
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Affiliation(s)
- Kalpana Deepa Priya Dorayappan
- Division of Gynecologic Oncology, Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Ross Wanner
- Division of Gynecologic Oncology, Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - John J Wallbillich
- Department of OB/GYN, Division of Gynecologic Oncology, Georgia Cancer Center, Augusta University, Augusta, GA, USA
| | - Uksha Saini
- Division of Gynecologic Oncology, Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Roman Zingarelli
- Division of Gynecologic Oncology, Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Adrian A Suarez
- Department of Pathology, Gynecologic Oncology, Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - David E Cohn
- Division of Gynecologic Oncology, Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Karuppaiyah Selvendiran
- Division of Gynecologic Oncology, Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH, USA.
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19
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Saini U, Suarez AA, Naidu S, Wallbillich JJ, Bixel K, Wanner RA, Bice J, Kladney RD, Lester J, Karlan BY, Goodfellow PJ, Cohn DE, Selvendiran K. STAT3/PIAS3 Levels Serve as "Early Signature" Genes in the Development of High-Grade Serous Carcinoma from the Fallopian Tube. Cancer Res 2018; 78:1739-1750. [PMID: 29339537 DOI: 10.1158/0008-5472.can-17-1671] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Revised: 11/13/2017] [Accepted: 01/10/2018] [Indexed: 01/23/2023]
Abstract
The initial molecular events that lead to malignant transformation of the fimbria of the fallopian tube (FT) through high-grade serous ovarian carcinoma (HGSC) remain poorly understood. In this study, we report that increased expression of signal transducer and activator of transcription 3 (pSTAT3 Tyr705) and suppression or loss of protein inhibitor of activated STAT3 (PIAS3) in FT likely drive HGSC. We evaluated human tissues-benign normal FT, tubal-peritoneal junction (TPJ), p53 signature FT tissue, tubal intraepithelial lesion in transition (TILT), serous tubal intraepithelial carcinoma (STIC) without ovarian cancer, and HGSC for expression of STAT3/PIAS3 (compared with their known TP53 signature) and their target proliferation genes. We observed constitutive activation of STAT3 and low levels or loss of PIAS3 in the TPJ, p53 signature, TILT, and STIC through advanced stage IV (HGSC) tissues. Elevated expression of pSTAT3 Tyr705 and decreased levels of PIAS3 appeared as early as TPJ and the trend continued until very advanced stage HGSC (compared with high PIAS3 and low pSTAT3 expression in normal benign FT). Exogenous expression of STAT3 in FT cells mediated translocation of pSTAT3 and c-Myc into the nucleus. In vivo experiments demonstrated that overexpression of STAT3 in FT secretory epithelial cells promoted tumor progression and metastasis, mimicking the clinical disease observed in patients with HGSC. Thus, we conclude that the STAT3 pathway plays a role in the development and progression of HGSC from its earliest premalignant states.Significance: Concomitant gain of pSTAT3 Tyr705 and loss of PIAS3 appear critical for initiation and development of high-grade serous carcinoma. Cancer Res; 78(7); 1739-50. ©2018 AACR.
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Affiliation(s)
- Uksha Saini
- Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, Comprehensive Cancer Center, the Ohio State University Wexner Medical Center, Columbus, Ohio
| | - Adrian A Suarez
- Department of Pathology, Gynecological Pathology and Cytopathology Unit, the Ohio State University Wexner Medical Center, Columbus, Ohio
| | - Shan Naidu
- Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, Comprehensive Cancer Center, the Ohio State University Wexner Medical Center, Columbus, Ohio
| | - John J Wallbillich
- Division of Gynecologic Oncology, Department of OB/GYN, Georgia Cancer Center, Augusta University, Augusta, Georgia
| | - Kristin Bixel
- Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, Comprehensive Cancer Center, the Ohio State University Wexner Medical Center, Columbus, Ohio
| | - Ross A Wanner
- Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, Comprehensive Cancer Center, the Ohio State University Wexner Medical Center, Columbus, Ohio
| | - Jason Bice
- Pathology Core Lab, Comprehensive Cancer Center, the Ohio State University Wexner Medical Center, Columbus, Ohio
| | - Raleigh D Kladney
- Pathology Core Lab, Comprehensive Cancer Center, the Ohio State University Wexner Medical Center, Columbus, Ohio
| | - Jenny Lester
- Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, Cedars Sinai Medical Center, Los Angeles, California
| | - Beth Y Karlan
- Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, Cedars Sinai Medical Center, Los Angeles, California
| | - Paul J Goodfellow
- Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, Comprehensive Cancer Center, the Ohio State University Wexner Medical Center, Columbus, Ohio
| | - David E Cohn
- Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, Comprehensive Cancer Center, the Ohio State University Wexner Medical Center, Columbus, Ohio
| | - Karuppaiyah Selvendiran
- Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, Comprehensive Cancer Center, the Ohio State University Wexner Medical Center, Columbus, Ohio.
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20
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Guo Q, Lu L, Liao Y, Wang X, Zhang Y, Liu Y, Huang S, Sun H, Li Z, Zhao L. Influence of c-Src on hypoxic resistance to paclitaxel in human ovarian cancer cells and reversal of FV-429. Cell Death Dis 2018; 8:e3178. [PMID: 29324735 PMCID: PMC5827169 DOI: 10.1038/cddis.2017.367] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Revised: 06/15/2017] [Accepted: 07/04/2017] [Indexed: 12/15/2022]
Abstract
SRC family kinase was documented to have vital roles in adjusting cancer cell malignant behaviors. To date, the role of c-Src, a member of SRC family kinase, in resistance to paclitaxel in human ovarian cancer cells under hypoxia has not been investigated. In the present study, we discovered that hypoxic environment suppressed paclitaxel-induced G2/M phase arrest and blockade of c-Src improved ovarian cancer cells’ sensitivity to paclitaxel. FV-429, a derivative of natural flavonoid wogonin, could suppress gene expression and activation of c-Src, followed by deteriorated Stat3 nuclear translocation and its binding to HIF-1α, resulting in paclitaxel resistance reversal through G2/M arrest potentiation. Our study demonstrated that c-Src contributed to hypoxic microenvironment-rendered paclitaxel resistance in human epithelial ovarian cancer cells by G2/M phase arrest deterioration, and through c-Src suppression, FV-429 was capable of reversing the resistance by blocking c-Src/Stat3/HIF-1α pathway.
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Affiliation(s)
- Qinglong Guo
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, People's Republic of China
| | - Lu Lu
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, People's Republic of China
| | - Yan Liao
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, People's Republic of China
| | - Xiaoping Wang
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, People's Republic of China
| | - Yi Zhang
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, People's Republic of China
| | - Yicheng Liu
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, People's Republic of China
| | - Shaoliang Huang
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, People's Republic of China
| | - Haopeng Sun
- Jiangsu Key Laboratory of Drug Design and Optimization, Department of Medicinal Chemistry, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, People's Republic of China
| | - Zhiyu Li
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, People's Republic of China
| | - Li Zhao
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, People's Republic of China
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21
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Zhu L, Ding X. Molecular design of Stat3-derived peptide selectivity between BET proteins Brd2 and Brd4 in ovarian cancer. J Mol Recognit 2017; 31. [PMID: 28983974 DOI: 10.1002/jmr.2679] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Revised: 09/14/2017] [Accepted: 09/14/2017] [Indexed: 12/11/2022]
Abstract
Stat3 signaling has been recognized as a potential therapeutic target of human ovarian cancer. The signaling is transducted through the peptide-medicated interaction of Stat3 with BET family members Brd2 and Brd4 -- 2 highly homologous proteins involved in differential downstream pathways. Here, we reported a successful design of peptide selectivity between the Brd2 and Brd4. The design resulted in 3 linear peptides SMSLQCXYLGVA, QSKVLTXSYWGA, and RQCNLGXLYMNY with high or moderate selectivity for Brd2 over Brd4 (S = 3.3-fold, 6.8-fold, and 4.2-fold, respectively) as compared with the native Stat3 peptide 281 HNLLRIXQFLQS292 (S = 2.5-fold). Structural analysis revealed that peptide N-terminus and hydrogen bonds play important roles in the peptide interaction stability and specificity with Brd2 and Brd4. This study would help to establish an integrated in silico-in vitro method for rational molecular design of peptide ligand selectivity between homologous protein receptors.
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Affiliation(s)
- Lixia Zhu
- Department of Gynaecology and Obstetrics, the First People's Hospital of Kunshan, Kunshan, China
| | - Xi Ding
- Department of Pharmacy, the Affiliated Hospital of Nantong University, Dongtai, China
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22
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Bixel K, Saini U, Kumar Bid H, Fowler J, Riley M, Wanner R, Deepa Priya Dorayappan K, Rajendran S, Konishi I, Matsumura N, Cohn DE, Selvendiran K. Targeting STAT3 by HO3867 induces apoptosis in ovarian clear cell carcinoma. Int J Cancer 2017. [PMID: 28646535 DOI: 10.1002/ijc.30847] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Advanced ovarian clear cell carcinoma (OCCC) carries a very poor prognosis in large part secondary to the extremely high rate of resistance to standard platinum and taxane chemotherapy. Signal transducer and activator of transcription 3(STAT3) expression and activation has been shown to regulate tumor progression in various human cancers, though has not been well studied in OCCC. Preliminary work in our lab has demonstrated constitutive activation of STAT3 (pSTAT3Tyr705 or pSTAT3727) in OCCC cell lines as well as human OCCC tumor tissue samples. Significantly, pSTAT3 is expressed in the absence of other forms of activated STAT (pSTAT1, 2, 6). Therefore, this work was planned to investigate the role of STAT3 and examine the efficacy of a novel anti-cancer compound -HO-3867, which is an inhibitor of STAT3, using known OCCC cell lines. Results demonstrate that treatment with HO-3867 decreased expression of pSTAT3 Tyr705 as well pSTAT3 Ser727, while total STAT3 remained constant. STAT3 overexpression increased the migration capability in OVTOKO cells in vitro and led to an increased tumor size when injected in vivo. The inhibitory effect of HO-3867 on cell proliferation and cell survival was accompanied by increased apoptosis, within 24 h post treatment. Treatment with HO-3867 resulted in a decrease in Bcl-2 and increase of cleavage of caspase 3, caspase 7, and PARP, confirming induction of apoptosis after treatment with HO-3867. In addition, HO-3867 significantly inhibited formation of human umbilical vein endothelial cells capillary-like structures and invasion at both 5 and 10 µM concentrations. STAT3 expression plays an important role in the spread of OCCC in vitro as well as in vivo. Thus, we can exploit the STAT3 pathway for targeted drug therapy. Inhibition of pSTAT3 using HO-3867in OCCC cell lines appears to be a promising therapy. This is of utmost importance given the poor response of OCCC to standard chemotherapy regimens.
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Affiliation(s)
- Kristin Bixel
- Division of Gynecologic Oncology, Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH
| | - Uksha Saini
- Division of Gynecologic Oncology, Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH
| | - Hemant Kumar Bid
- Cancer Therapeutics, Life Sciences Institute University of Michigan campus, Ann Arbor, MI
| | - John Fowler
- Division of Gynecologic Oncology, Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH
| | - Maria Riley
- Division of Gynecologic Oncology, Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH
| | - Ross Wanner
- Division of Gynecologic Oncology, Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH
| | - Kalpana Deepa Priya Dorayappan
- Division of Gynecologic Oncology, Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH
| | - Sneha Rajendran
- Division of Gynecologic Oncology, Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH
| | - Ikuo Konishi
- Division of GYN/ONC, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Noriomi Matsumura
- Division of GYN/ONC, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - David E Cohn
- Division of Gynecologic Oncology, Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH
| | - Karuppaiyah Selvendiran
- Division of Gynecologic Oncology, Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH
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23
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ElNaggar AC, Saini U, Naidu S, Wanner R, Sudhakar M, Fowler J, Nagane M, Kuppusamy P, Cohn DE, Selvendiran K. Anticancer potential of diarylidenyl piperidone derivatives, HO-4200 and H-4318, in cisplatin resistant primary ovarian cancer. Cancer Biol Ther 2017; 17:1107-1115. [PMID: 27415751 DOI: 10.1080/15384047.2016.1210733] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
We have previously developed a novel class of bi-functional compounds based on a diarylidenyl-piperidone (DAP) backbone conjugated to an N-hydroxypyrroline (-NOH; a nitroxide precursor) group capable of selectively inhibiting STAT3 activation, translocation, and DNA binding activity. HO-4200 and H-4318 are 2 such derivatives capable of inducing apoptosis in ovarian cancer cells through this mechanism and demonstrated efficacy in platinum resistant primary ovarian cancer cell populations and tumor tissues. The improved absorption and cellular uptake of HO-4200 by cancer cells was determined using optical and electron paramagnetic resonance spectrometry. Treatment of ovarian cancer cells with HO-4200 and H-4318 resulted in cleavage of caspase proteins 3, 7, and 9, as well as PARP and inhibition of the pro-survival protein, Bcl-xL, resulting in significantly decreased cell survival and increased apoptosis. HO-4200 and H-4318 significantly inhibit fatty acid synthase (FAS) and pSTAT3 and decreased the expression of STAT3 target proteins: Survivin, c-myc, Bcl-xl, Bcl-2, cyclin D1/D2, and VEGF were suppressed as analyzed using quantitative real time PCR. In addition, HO-4200 and H-4318 significantly inhibited migration/invasion, in primary ovarian cancer cell populations isolated from primary and recurrent ovarian cancer patients. Treatment of freshly collected human ovarian tumor sections with HO-4200 demonstrated significant suppression of pSTAT3 Tyr 705, angiogenesis (VEFG), and markers of proliferation (Ki-67) in ex vivo models. We have shown, for the first time, that the DAP compounds, HO-4200 and H-4318, inhibit cell migration/invasion and induce apoptosis by targeting FAS/STAT3 in human ovarian cancer cells, including primary ovarian cancer cell populations and tumor tissues. Therefore, our results highlight the clinical anti-cancer potential of HO-4200 and H-4318.
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Affiliation(s)
- Adam C ElNaggar
- a Division of Gynecologic Oncology , The Ohio State University Comprehensive Cancer Center- Arthur G. James Cancer Hospital and Richard J. Solve Research Institute , Columbus , OH , USA
| | - Uksha Saini
- b Division of Gynecologic Oncology , Comprehensive Cancer Center and Solid Tumor Biology Program, The Ohio State University Wexner Medical Center , Columbus , OH , USA
| | - Shan Naidu
- b Division of Gynecologic Oncology , Comprehensive Cancer Center and Solid Tumor Biology Program, The Ohio State University Wexner Medical Center , Columbus , OH , USA
| | - Ross Wanner
- b Division of Gynecologic Oncology , Comprehensive Cancer Center and Solid Tumor Biology Program, The Ohio State University Wexner Medical Center , Columbus , OH , USA
| | - Millie Sudhakar
- b Division of Gynecologic Oncology , Comprehensive Cancer Center and Solid Tumor Biology Program, The Ohio State University Wexner Medical Center , Columbus , OH , USA
| | | | - Masaki Nagane
- c Department of Radiology , Dartmouth College Geisel School of Medicine , Hanover , NH , USA
| | - Periannan Kuppusamy
- c Department of Radiology , Dartmouth College Geisel School of Medicine , Hanover , NH , USA
| | - David E Cohn
- a Division of Gynecologic Oncology , The Ohio State University Comprehensive Cancer Center- Arthur G. James Cancer Hospital and Richard J. Solve Research Institute , Columbus , OH , USA
| | - Karuppaiyah Selvendiran
- b Division of Gynecologic Oncology , Comprehensive Cancer Center and Solid Tumor Biology Program, The Ohio State University Wexner Medical Center , Columbus , OH , USA
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24
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Shang AQ, Wu J, Bi F, Zhang YJ, Xu LR, Li LL, Chen FF, Wang WW, Zhu JJ, Liu YY. Relationship between HER2 and JAK/STAT-SOCS3 signaling pathway and clinicopathological features and prognosis of ovarian cancer. Cancer Biol Ther 2017; 18:314-322. [PMID: 28448787 DOI: 10.1080/15384047.2017.1310343] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Abstract
OBJECTIVE The study aims to explore the relationship between expressions of HER2 and JAK/STAT3-SOCS3 signaling pathway and clinicopathological features and prognosis of ovarian cancer (OC). METHODS A total of 136 OC patients were collected. Immunohistochemistry was applied to measure the expressions of STAT3, p-STAT3, SOCS3, HER2 and p-HER2 in the tumor tissues and adjacent normal tissues. Quantitative real-time polymerase chain reaction (qRT-PCR) was used to detect the mRNA expressions of HER2, SOCS3 and STAT3 and western blotting was applied for protein expressions of HER2, p-HER2, SOCS3, STAT3 and p-STAT3 in the tumor tissues and adjacent normal tissues. Flow cytometry was used for the cell apoptosis in the blank, afatinib (A), ruxolitinib (R) and afatinib + ruxolitinib (A + R) groups. Follow-up was performed to explore relationship of HER2, SOCS3, and STAT3 expressions with survival time of OC patients. RESULTS HER2, p-HER2, STAT3, and p-STAT3 expressions were higher while SOCS3 expression was lower in the tumor tissues. The positive expressions of STAT3, HER2, p-HER2 and p-STAT3 were lower while the positive expression of SOCS3 was higher in the adjacent normal tissues. The expressions of HER2, SOCS3, and p-STAT3 were associated with clinical stage and lymph node metastasis (LNM), and STAT3 expression has correlation with histological grade and LNM. The mRNA and protein expressions of HER2, STAT3 and p-STAT3 in the tumor tissues were higher than those in the adjacent normal tissues, but SOCS3 expression was significantly decreased. The positive expressions of HER2, p-HER2 and STAT3, the negative expression of SOCS3 and pathological stages were important risk factors for the prognosis of patients with OC. CONCLUSION Our study showed that the expressions of HER2, STAT3, and SOCS3 are associated with the progression of OC, and higher expressions of HER2 and STAT3 and lower expression of SOCS3 predict poor prognosis of OC.
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Affiliation(s)
- An-Quan Shang
- a Clinical Medicine School , Ningxia Medical University , Yinchuan , P.R. China.,b Department of Laboratory Medicine , The Sixth People's Hospital of Yancheng City , Yancheng , P.R. China
| | - Jian Wu
- c Department of Oncology , The Sixth People's Hospital of Yancheng City , Yancheng , P.R. China
| | - Feng Bi
- d Department of Obstetrics and Gynecology , The Sixth People's Hospital of Yancheng City , Yancheng , P.R. China
| | - Yu-Jie Zhang
- a Clinical Medicine School , Ningxia Medical University , Yinchuan , P.R. China
| | - Lei-Rong Xu
- c Department of Oncology , The Sixth People's Hospital of Yancheng City , Yancheng , P.R. China
| | - Ling-Ling Li
- c Department of Oncology , The Sixth People's Hospital of Yancheng City , Yancheng , P.R. China
| | - Fei-Fei Chen
- c Department of Oncology , The Sixth People's Hospital of Yancheng City , Yancheng , P.R. China
| | - Wei-Wei Wang
- e Department of Pathology , The First People's Hospital of Yancheng City , Yancheng , P.R. China.,f Department of Pathology , The Sixth People's Hospital of Yancheng City , Yancheng , P.R. China
| | - Jian-Jun Zhu
- c Department of Oncology , The Sixth People's Hospital of Yancheng City , Yancheng , P.R. China
| | - You-Yi Liu
- g Department of Gynecology and Obstetrics , Fifth Hospital in Wuhan , Wuhan , Hubei Province , P.R. China
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25
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Cha HJ, Choi JH, Park IC, Kim CH, An SK, Kim TJ, Lee JH. Selective FGFR inhibitor BGJ398 inhibits phosphorylation of AKT and STAT3 and induces cytotoxicity in sphere-cultured ovarian cancer cells. Int J Oncol 2017; 50:1279-1288. [DOI: 10.3892/ijo.2017.3913] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2016] [Accepted: 03/03/2017] [Indexed: 11/06/2022] Open
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26
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Elevated STAT3 expression in ovarian cancer ascites promotes invasion and metastasis: a potential therapeutic target. Oncogene 2016; 36:168-181. [PMID: 27292260 DOI: 10.1038/onc.2016.197] [Citation(s) in RCA: 88] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Revised: 04/06/2016] [Accepted: 04/18/2016] [Indexed: 12/12/2022]
Abstract
Although activation of the STAT3 pathway has been associated with tumor progression in a wide variety of cancer types (including ovarian cancer), the precise mechanism of invasion and metastasis due to STAT3 are not fully delineated in ovarian cancer. We found that pSTAT3 Tyr705 is constitutively activated in patient ascites and ascites-derived ovarian cancer cells (ADOCCs), and the range of STAT3 expression could be very high to low. In vivo transplantation of ADOCCs with high pSTAT3 expression into the ovarian bursa of mice resulted in a large primary tumor and widespread peritoneal metastases. In contrast, ADOCCs with low STAT3 expression or ADOCCs with STAT3 expression knockdown, led to reduced tumor growth and an absence of metastases in vivo. Cytokines derived from the ADOCC culture medium activate the interleukin (IL)-6/STAT pathway in the STAT3 knockout (KO) cells, compensating for the absence of inherent STAT3 in the cells. Treatment with HO-3867 (a novel STAT3 inhibitor at 100 p.p.m. in an orthotopic murine model) significantly suppressed ovarian tumor growth, angiogenesis and metastasis by targeting STAT3 and its downstream proteins. HO-3867 was found to have cytotoxic effects in ex vivo cultures of freshly collected human ovarian cancers, including those resistant to platinum-based chemotherapy. Our results show that STAT3 is necessary for ovarian tumor progression/metastasis and highlight the potential for targeting STAT3 by HO-3867 as a therapeutic strategy for ovarian cancer.
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27
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Dorayappan KDP, Wallbillich JJ, Cohn DE, Selvendiran K. The biological significance and clinical applications of exosomes in ovarian cancer. Gynecol Oncol 2016; 142:199-205. [PMID: 27058839 DOI: 10.1016/j.ygyno.2016.03.036] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Revised: 03/25/2016] [Accepted: 03/29/2016] [Indexed: 12/21/2022]
Abstract
Exosomes are nano-sized (20-100nm) vesicles released by a variety of cells and are generated within the endosomal system or at the plasma membrane. There is emerging evidence that exosomes play a key role in intercellular communication in ovarian and other cancers. The protein and microRNA content of exosomes has been implicated in various intracellular processes that mediate oncogenesis, tumor spread, and drug resistance. Exosomes may prime distant tissue sites for reception of future metastases and their release can be mediated by the tumor microenvironment (e.g., hypoxia). Ovarian cancer-derived exosomes have unique features that could be leveraged for use as biomarkers to facilitate improved detection and treatment of the disease. Further, exosomes have the potential to serve as targets and/or drug delivery vehicles in the treatment of ovarian cancer. In this review we discuss the biological and clinical significance of exosomes relevant to the progression, detection, and treatment of ovarian cancer.
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Affiliation(s)
- Kalpana Deepa Priya Dorayappan
- Division of Gynecologic Oncology, Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH, United States
| | - John J Wallbillich
- Division of Gynecologic Oncology, Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH, United States
| | - David E Cohn
- Division of Gynecologic Oncology, Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH, United States
| | - Karuppaiyah Selvendiran
- Division of Gynecologic Oncology, Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH, United States.
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28
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Wang H, Sun Q, Wu Y, Wang L, Zhou C, Ma W, Zhang Y, Wang S, Zhang S. Granzyme M expressed by tumor cells promotes chemoresistance and EMT in vitro and metastasis in vivo associated with STAT3 activation. Oncotarget 2016; 6:5818-31. [PMID: 25788270 PMCID: PMC4467404 DOI: 10.18632/oncotarget.3461] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2014] [Accepted: 01/22/2015] [Indexed: 11/25/2022] Open
Abstract
Granzyme M is a serine protease known to be often expressed by natural killer cells and induce target cells apoptosis in combination with perforin. However, we detected granzyme M expression in murine and human cancer cell lines and human tumor samples in our study. Granzyme M increased chemoresistance, colony-formation, cytokine secretion and invasiveness in vitro. Most importantly, granzyme M facilitated tumor growth and metastasis in vivo. Granzyme M induced the epithelial-mesenchymal transition (EMT) in cancer cells associated with STAT3 activation. Our study revealed the role of granzyme M expressed by tumor in chemoresistance, invasion, metastasis and EMT.
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Affiliation(s)
- Huiru Wang
- Department of Immunology, Cancer Hospital & Cancer Institute, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, China
| | - Qing Sun
- Department of Parasitology, Capital Medical University, Beijing, China
| | - Yanhong Wu
- Department of Immunology, Cancer Hospital & Cancer Institute, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, China
| | - Lin Wang
- Department of Pathology, Cancer Hospital & Cancer Institute, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, China
| | - Chunxia Zhou
- Department of Immunology, Cancer Hospital & Cancer Institute, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, China
| | - Wenbo Ma
- Department of Immunology, Cancer Hospital & Cancer Institute, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, China
| | - Youhui Zhang
- Department of Immunology, Cancer Hospital & Cancer Institute, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, China
| | - Shengdian Wang
- Center of Infection and Immunity, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Shuren Zhang
- Department of Immunology, Cancer Hospital & Cancer Institute, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, China
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29
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Brassinin inhibits STAT3 signaling pathway through modulation of PIAS-3 and SOCS-3 expression and sensitizes human lung cancer xenograft in nude mice to paclitaxel. Oncotarget 2016; 6:6386-405. [PMID: 25788267 PMCID: PMC4467444 DOI: 10.18632/oncotarget.3443] [Citation(s) in RCA: 122] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Accepted: 01/21/2015] [Indexed: 12/14/2022] Open
Abstract
Persistent phosphorylation of signal transducers and activators of transcription 3 (STAT3) is frequently observed in tumor cells. We found that brassinin (BSN) suppressed both constitutive and IL-6-inducible STAT3 activation in lung cancer cells. Moreover, BSN induced PIAS-3 protein and mRNA, whereas the expression of SOCS-3 was reduced. Knockdown of PIAS-3 by small interfering RNA prevented inhibition of STAT3 and cytotoxicity by BSN. Overexpression of SOCS-3 in BSN-treated cells increased STAT3 phosphorylation and cell viability. BSN down-regulated STAT3-regulated gene products, inhibited proliferation, invasion, as well as induced apoptosis. Most importantly, when administered intraperitoneally, combination of BSN and paclitaxel significantly decreased the tumor development in a xenograft lung cancer mouse model associated with down-modulation of phospho-STAT3, Ki-67 and CD31. We suggest that BSN inhibits STAT3 signaling through modulation of PIAS-3 and SOCS-3, thereby attenuating tumor growth and increasing sensitivity to paclitaxel.
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30
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Han Z, Wang X, Ma L, Chen L, Xiao M, Huang L, Cao Y, Bai J, Ma D, Zhou J, Hong Z. Inhibition of STAT3 signaling targets both tumor-initiating and differentiated cell populations in prostate cancer. Oncotarget 2015; 5:8416-28. [PMID: 25261365 PMCID: PMC4226693 DOI: 10.18632/oncotarget.2314] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Despite of tremendous research efforts to profile prostate cancer, the genetic alterations and biological processes that correlate with disease progression remain partially elusive. In this study we show that the STAT3 small molecule inhibitor Stattic caused S-phase accumulation at low-dose levels and led to massive apoptosis at a relatively high-dose level in prostate cancer cells. STAT3 knockdown led to the disruption of the microvascular niche which tumor-initiating cells (TICs) and non-tumor initiating cells (non-TICs)depend on. Primary human prostate cancer cells and prostate cancer cell line contained high aldehyde dehydrogenase activity (ALDHhigh) subpopulations with stem cell-like characteristics, which expressed higher levels of the active phosphorylated form of STAT3 (pSTAT3) than that of non-ALDHhigh subpopulations. Stattic could singnificantly decreas the population of ALDHhigh prostate cancer cells even at low-dose levels. IL-6 can convert non-ALDHhigh cells to ALDHhigh cells in prostate cancer cell line as well as from cells derived from human prostate tumors, the conversion mediated by IL-6 was abrogated in the presence of STAT3 inhibitor or upon STAT3 knockdown. STAT3 knockdown significantly impaired the ability of prostate cancer cells to initiate development of prostate adenocarcinoma. Moreover, blockade of STAT3 signaling was significantly effective in eradicating the tumor-initiating and bulk tumor cancer cell populations in both prostate cancer cell-line xenograft model and patient-derived tumor xenograft (PDTX) models. This data suggests that targeting both tumor initiating and differentiated cell populations by STAT3 inhibition is predicted to have greater efficacy for prostate cancer treatment.
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Affiliation(s)
- Zhiqiang Han
- Cancer Biology Research Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China. These authors contributed equally to this work
| | - Xiaoli Wang
- Cancer Biology Research Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China. These authors contributed equally to this work
| | - Liang Ma
- Department of Urology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Lijuan Chen
- Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | | | - Liang Huang
- Cancer Biology Research Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Yang Cao
- Cancer Biology Research Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Jian Bai
- Cancer Biology Research Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Ding Ma
- Cancer Biology Research Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Jianfeng Zhou
- Cancer Biology Research Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Zhenya Hong
- Cancer Biology Research Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China. Department of Hematology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
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31
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Network-based survival-associated module biomarker and its crosstalk with cell death genes in ovarian cancer. Sci Rep 2015; 5:11566. [PMID: 26099452 PMCID: PMC4477367 DOI: 10.1038/srep11566] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Accepted: 05/28/2015] [Indexed: 12/27/2022] Open
Abstract
Ovarian cancer remains a dismal disease with diagnosing in the late, metastatic stages, therefore, there is a growing realization of the critical need to develop effective biomarkers for understanding underlying mechanisms. Although existing evidences demonstrate the important role of the single genetic abnormality in pathogenesis, the perturbations of interactors in the complex network are often ignored. Moreover, ovarian cancer diagnosis and treatment still exist a large gap that need to be bridged. In this work, we adopted a network-based survival-associated approach to capture a 12-gene network module based on differential co-expression PPI network in the advanced-stage, high-grade ovarian serous cystadenocarcinoma. Then, regulatory genes (protein-coding genes and non-coding genes) direct interacting with the module were found to be significantly overlapped with cell death genes. More importantly, these overlapping genes tightly clustered together pointing to the module, deciphering the crosstalk between network-based survival-associated module and cell death in ovarian cancer.
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32
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Vasiliauskas J, Nashu MA, Pathrose P, Starnes SL, Waltz SE. Hepatocyte growth factor-like protein is required for prostate tumor growth in the TRAMP mouse model. Oncotarget 2015; 5:5547-58. [PMID: 24980820 PMCID: PMC4170603 DOI: 10.18632/oncotarget.2139] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
The Ron receptor is deregulated in a variety of cancers. Hepatocyte growth factor-like protein (HGFL) is the ligand for Ron and is constitutively secreted from hepatocytes into the circulation. While a few recent reports have emerged analyzing ectopic HGFL overexpression in cancer cells, no studies have examined the effect of host-produced HGFL in tumorigenesis. To examine HGFL function in prostate cancer, the TRAMP mouse model, which is predisposed to develop prostate tumors, was utilized. Prostate tumors from TRAMP mice exhibit elevated levels of HGFL, which correlated with upregulation in human prostate cancer. To directly implicate HGFL in prostate tumorigenesis, TRAMP mice deficient in HGFL (HGFL-/-TRAMP+) were generated. HGFL-/- TRAMP+ mice developed significantly smaller prostate tumors compared to controls. Analysis of HGFL-/- tumors revealed reduced tumor vascularization. No differences in cancer cell proliferation were detected between HGFL-/- TRAMP+ and HGFL+/+ TRAMP+ mice. However, a significant increase in cancer cell death was detected in HGFL-/- TRAMP+ prostates which correlated with decreased pro-survival targets. In vitro analysis demonstrated robust STAT3 activation resulting in Bcl2-dependent survival following treatment of prostate cancer cells with HGFL. These data document a novel function for endogenous HGFL in prostate cancer by imparting a critical survival signal to tumor cells.
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Affiliation(s)
- Juozas Vasiliauskas
- Departments of Cancer Biology , Cincinnati Veterans Affairs Medical Center, Cincinnati, Ohio
| | - Madison A Nashu
- Departments of Cancer Biology , Cincinnati Veterans Affairs Medical Center, Cincinnati, Ohio
| | - Peterson Pathrose
- Department of Surgery, University of Cincinnati College of Medicine, Cincinnati Veterans Affairs Medical Center, Cincinnati, Ohio
| | - Sandra L Starnes
- Department of Surgery, University of Cincinnati College of Medicine, Cincinnati Veterans Affairs Medical Center, Cincinnati, Ohio
| | - Susan E Waltz
- Departments of Cancer Biology , Cincinnati Veterans Affairs Medical Center, Cincinnati, Ohio. Research Service, Cincinnati Veterans Affairs Medical Center, Cincinnati, Ohio
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Huang Y, Zhao M, Xu H, Wang K, Fu Z, Jiang Y, Yao Z. RASAL2 down-regulation in ovarian cancer promotes epithelial-mesenchymal transition and metastasis. Oncotarget 2015; 5:6734-45. [PMID: 25216515 PMCID: PMC4196159 DOI: 10.18632/oncotarget.2244] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Ovarian cancer is the most lethal gynecologic malignancy, and transcoelomic metastasis is responsible for the greatest disease mortality. Although intensive efforts have been made, the mechanism behind this process remains unclear. RASAL2 is a GTPase activating proteins (GAPs) which was recently reported as a tumor suppressor in breast cancer. In this study, we identified RASAL2 as a regulator of epithelial-mesenchymal transition (EMT) and metastasis in ovarian cancer. RASAL2 was down-regulated in ovarian cancer samples compared with normal tissue samples, especially in advanced stages and grades. RASAL2 knockdown in ovarian cancer cell lines promoted in vitro anchorage-independent growth, cell migration and invasion and in vivo tumor formation. Moreover, we observed EMT in RASAL2-depleted cells. E-cadherin-mediated cell-cell adhesion was attenuated, and mesenchymal markers were up-regulated. Further investigation revealed that the oncogenic role of RASAL2 down-regulation was mediated by the Ras-ERK pathway. RASAL2 knockdown activated the Ras-ERK pathway, and inhibition of the pathway reversed the functional effects of RASAL2 depletion. Together, our results implicate RASAL2 as an EMT regulator and tumor suppressor in ovarian cancer, and down-regulation of RASAL2 promotes ovarian cancer progression.
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Affiliation(s)
- Yuting Huang
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center of Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, P.R. China. Department of Immunology, Tianjin Key Laboratory of Cellular and Molecular Immunology, Key Laboratory of Educational Ministry of China, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, P.R. China. These authors contributed equally to this work
| | - Meng Zhao
- Department of Immunology, Tianjin Key Laboratory of Cellular and Molecular Immunology, Key Laboratory of Educational Ministry of China, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, P.R. China. These authors contributed equally to this work
| | - Haixu Xu
- Department of Immunology, Tianjin Key Laboratory of Cellular and Molecular Immunology, Key Laboratory of Educational Ministry of China, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, P.R. China
| | - Ke Wang
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center of Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, P.R. China
| | - Zheng Fu
- Department of Immunology, Tianjin Key Laboratory of Cellular and Molecular Immunology, Key Laboratory of Educational Ministry of China, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, P.R. China
| | - Yuan Jiang
- Department of Immunology, Tianjin Key Laboratory of Cellular and Molecular Immunology, Key Laboratory of Educational Ministry of China, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, P.R. China
| | - Zhi Yao
- Department of Immunology, Tianjin Key Laboratory of Cellular and Molecular Immunology, Key Laboratory of Educational Ministry of China, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, P.R. China
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