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OWAKI K, MURAKAMI M, KATO K, HIRATA A, SAKAI H. Reduction of phosphorylated signal transducer and activator of transcription-5 expression in feline mammary carcinoma. J Vet Med Sci 2024; 86:816-823. [PMID: 38777776 PMCID: PMC11251807 DOI: 10.1292/jvms.23-0470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Accepted: 04/02/2024] [Indexed: 05/25/2024] Open
Abstract
Signal transducers and activators of transcription (STATs) are a family of transcription factors involved in various normal physiological cellular processes. Moreover, STATs have been recently identified as novel therapeutic targets for various human tumors. STAT3, STAT5a, and STAT6 have been suggested to be involved in tumorigenesis in human breast cancer. Owing to the similarity between feline mammary carcinomas (FMCs) and human breast cancers, these factors may play an important role in FMCs. However, studies on the expression of STATs in animal tumors are limited. Therefore, in this study, we aimed to characterize the expression of total STAT5 (tSTAT5) and phosphorylated STAT5 (pSTAT5) in FMCs, feline mammary adenomas, non-neoplastic proliferative mammary gland lesions, and normal feline mammary glands using immunohistochemistry. High expression of tSTAT5 was observed in the cytoplasm of all the samples assessed in this study. Moreover, high expression of tSTAT5 was observed in the nucleus; however, its levels varied depending on the lesion. The percentage of pSTAT5-nuclear positive cells varied among normal feline mammary glands (40.1 ± 25.1%), and non-neoplastic lesions, including mammary hyperplasia (43.2 ± 28.6%) and fibroadenomatous changes (18.0 ± 13.6%). Moreover, the percentage of pSTAT5-nuclear-positive cells in feline mammary adenomas was 24.5 ± 19.2%, which was significantly reduced in feline mammary carcinomas (2.4 ± 5.6%), regardless of histopathological subtype. This study suggests that decreased STAT5 activity may be involved in the development and malignant progression of feline mammary carcinomas.
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Affiliation(s)
- Keishi OWAKI
- Laboratory of Veterinary Pathology, Joint Graduate School of Veterinary Sciences, Gifu University, Gifu, Japan
| | - Mami MURAKAMI
- Laboratory of Veterinary Clinical Pathology, Joint Department of Veterinary Medicine, Faculty of Applied Biological Sciences, Gifu University, Gifu, Japan
| | - Kana KATO
- Laboratory of Veterinary Pathology, Joint Department of Veterinary Medicine, Faculty of Applied Biological Sciences, Gifu University, Gifu, Japan
| | - Akihiro HIRATA
- Laboratory of Veterinary Pathology, Joint Graduate School of Veterinary Sciences, Gifu University, Gifu, Japan
- Laboratory of Veterinary Pathology, Joint Department of Veterinary Medicine, Faculty of Applied Biological Sciences, Gifu University, Gifu, Japan
- Center for One Medicine Innovative Translational Research (COMIT), Gifu University, Gifu, Japan
| | - Hiroki SAKAI
- Laboratory of Veterinary Pathology, Joint Graduate School of Veterinary Sciences, Gifu University, Gifu, Japan
- Laboratory of Veterinary Pathology, Joint Department of Veterinary Medicine, Faculty of Applied Biological Sciences, Gifu University, Gifu, Japan
- Center for One Medicine Innovative Translational Research (COMIT), Gifu University, Gifu, Japan
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2
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Wehbe N, Badran A, Baydoun S, Al-Sawalmih A, Maresca M, Baydoun E, Mesmar JE. The Antioxidant Potential and Anticancer Activity of Halodule uninervis Ethanolic Extract against Triple-Negative Breast Cancer Cells. Antioxidants (Basel) 2024; 13:726. [PMID: 38929164 PMCID: PMC11200955 DOI: 10.3390/antiox13060726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2024] [Revised: 06/07/2024] [Accepted: 06/09/2024] [Indexed: 06/28/2024] Open
Abstract
Natural remedies have been indispensable to traditional medicine practices for generations, offering therapeutic solutions for various ailments. In modern times, these natural products continue to play a pivotal role in the discovery of new drugs, especially for cancer treatment. The marine ecosystem offers a wide range of plants with potential anticancer activities due to their distinct biochemical diversity and adaptation to extreme situations. The seagrass Halodule uninervis is rich in diverse bioactive metabolites that bestow the plant with various pharmacological properties. However, its anticancer activity against invasive triple-negative breast cancer (TNBC) is still poorly investigated. In the present study, the phytochemical composition of an ethanolic extract of H. uninervis (HUE) was screened, and its antioxidant potential was evaluated. Moreover, the anticancer potential of HUE against MDA-MB-231 cells was investigated along with the possible underlying mechanisms of action. Our results showed that HUE is rich in diverse phytochemicals that are known for their antioxidant and anticancer effects. In MDA-MB-231 cells, HUE targeted the hallmarks of cancer, including cell proliferation, adhesion, migration, invasion, and angiogenesis. The HUE-mediated anti-proliferative and anti-metastatic effects were associated with the downregulation of the proto-oncogenic STAT3 signaling pathway. Taken together, H. uninervis could serve as a valuable source for developing novel drugs targeting TNBC.
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Affiliation(s)
- Nadine Wehbe
- Department of Biology, Faculty of Arts and Sciences, American University of Beirut, Riad El Solh, Beirut 1107 2020, Lebanon; (N.W.); (E.B.)
| | - Adnan Badran
- Department of Nutrition, Faculty of Pharmacy and Medical Sciences, University of Petra, Amman 11196, Jordan;
| | - Serine Baydoun
- Breast Imaging Section, Imaging Institute, Cleveland Clinic Foundation, Cleveland, OH 44195, USA;
| | - Ali Al-Sawalmih
- Marine Science Station, University of Jordan, Aqaba 11942, Jordan;
| | - Marc Maresca
- Aix-Marseille Univ, CNRS, Centrale Marseille, iSM2, 13013 Marseille, France
| | - Elias Baydoun
- Department of Biology, Faculty of Arts and Sciences, American University of Beirut, Riad El Solh, Beirut 1107 2020, Lebanon; (N.W.); (E.B.)
| | - Joelle Edward Mesmar
- Department of Biology, Faculty of Arts and Sciences, American University of Beirut, Riad El Solh, Beirut 1107 2020, Lebanon; (N.W.); (E.B.)
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Hu M, Xu M, Chen Y, Ye Z, Zhu S, Cai J, Zhang M, Zhang C, Huang R, Ye Q, Ao H. Therapeutic potential of toosendanin: Novel applications of an old ascaris repellent as a drug candidate. Biomed Pharmacother 2023; 167:115541. [PMID: 37738795 DOI: 10.1016/j.biopha.2023.115541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 09/13/2023] [Accepted: 09/17/2023] [Indexed: 09/24/2023] Open
Abstract
Toosendanin (TSN), extracted from Melia. toosendan Sieb.et Zucc. and Melia. azedarach L., has been developed into an ascaris repellent in China. However, with the improvement of public health protection, the incidence of ascariasis has been reduced considerably, resulting in limited medical application of TSN. Therefore, it is questionable whether this old ascaris repellent can develop into a drug candidate. Modern studies have shown that TSN has strong pharmacological activities, including anti-tumor, anti-botulinum, anti-viral and anti-parasitic potentials. It also can regulate fat formation and improve inflammation. These researches indicate that TSN has great potential to be developed into a corresponding medical product. In order to better development and application of TSN, the availability, pharmacodynamics, pharmacokinetics and toxicology of TSN are summarized systematically. In addition, this review discusses shortcomings in the current researches and provides useful suggestions about how TSN developed into a drug candidate. Therefore, this paper illustrates the possibility of developing TSN as a medical product, aimed to provide directions for the clinical application and further research of TSN.
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Affiliation(s)
- Minghao Hu
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, Sichuan, China; School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, Sichuan, China
| | - Min Xu
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, Sichuan, China
| | - Yuchen Chen
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, Sichuan, China; School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, Sichuan, China
| | - Zhangkai Ye
- Xinjiang Normal University, Urumqi 830017, Xinjiang, China
| | - Shunpeng Zhu
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, Sichuan, China; School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, Sichuan, China
| | - Jia Cai
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, Sichuan, China; School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, Sichuan, China
| | - Mengxue Zhang
- First School of Clinical Medicine, Beijing University of Chinese Medicine, Beijing 100029, China
| | - Chi Zhang
- School of health and Rehabilitation, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, Sichuan, China
| | - Ruizhen Huang
- Affiliated Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu 610072, China.
| | - Qiang Ye
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, Sichuan, China; School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, Sichuan, China.
| | - Hui Ao
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, Sichuan, China; Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, Sichuan, China.
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Park YR, Jee W, Park SM, Kim SW, Bae H, Jung JH, Kim H, Kim S, Chung JS, Jang HJ. Viscum album Induces Apoptosis by Regulating STAT3 Signaling Pathway in Breast Cancer Cells. Int J Mol Sci 2023; 24:11988. [PMID: 37569363 PMCID: PMC10418465 DOI: 10.3390/ijms241511988] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 07/24/2023] [Accepted: 07/25/2023] [Indexed: 08/13/2023] Open
Abstract
In this study, we investigated the potential anticancer effects of Viscum album, a parasitic plant that grows on Malus domestica (VaM) on breast cancer cells, and explored the underlying mechanisms. VaM significantly inhibited cell viability and proliferation and induced apoptosis in a dose-dependent manner. VaM also regulated cell cycle progression and effectively inhibited activation of the STAT3 signaling pathway through SHP-1. Combining VaM with low-dose doxorubicin produced a synergistic effect, highlighting its potential as a promising therapeutic. In vivo, VaM administration inhibited tumor growth and modulated key molecular markers associated with breast cancer progression. Overall, our findings provide strong evidence for the therapeutic potential of VaM in breast cancer treatment and support further studies exploring clinical applications.
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Affiliation(s)
- Ye-Rin Park
- College of Korean Medicine, Kyung Hee University, 24, Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea; (Y.-R.P.); (W.J.); (S.-M.P.); (S.W.K.); (H.B.); (J.H.J.); (H.K.)
- Department of Science in Korean Medicine, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Wona Jee
- College of Korean Medicine, Kyung Hee University, 24, Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea; (Y.-R.P.); (W.J.); (S.-M.P.); (S.W.K.); (H.B.); (J.H.J.); (H.K.)
- Department of Science in Korean Medicine, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
| | - So-Mi Park
- College of Korean Medicine, Kyung Hee University, 24, Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea; (Y.-R.P.); (W.J.); (S.-M.P.); (S.W.K.); (H.B.); (J.H.J.); (H.K.)
- Department of Science in Korean Medicine, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Seok Woo Kim
- College of Korean Medicine, Kyung Hee University, 24, Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea; (Y.-R.P.); (W.J.); (S.-M.P.); (S.W.K.); (H.B.); (J.H.J.); (H.K.)
- Department of Science in Korean Medicine, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Hanbit Bae
- College of Korean Medicine, Kyung Hee University, 24, Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea; (Y.-R.P.); (W.J.); (S.-M.P.); (S.W.K.); (H.B.); (J.H.J.); (H.K.)
- Department of Science in Korean Medicine, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Ji Hoon Jung
- College of Korean Medicine, Kyung Hee University, 24, Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea; (Y.-R.P.); (W.J.); (S.-M.P.); (S.W.K.); (H.B.); (J.H.J.); (H.K.)
- Department of Science in Korean Medicine, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Hyungsuk Kim
- College of Korean Medicine, Kyung Hee University, 24, Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea; (Y.-R.P.); (W.J.); (S.-M.P.); (S.W.K.); (H.B.); (J.H.J.); (H.K.)
- Department of Korean Rehabilitation Medicine, Kyung Hee University Medical Center, Seoul 02447, Republic of Korea
| | - Sangki Kim
- Dalim Biotech, 33 Sinpyeong-ro, Jijeong-myeon, Wonju-si 26348, Republic of Korea; (S.K.); (J.S.C.)
| | - Jong Sup Chung
- Dalim Biotech, 33 Sinpyeong-ro, Jijeong-myeon, Wonju-si 26348, Republic of Korea; (S.K.); (J.S.C.)
| | - Hyeung-Jin Jang
- College of Korean Medicine, Kyung Hee University, 24, Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea; (Y.-R.P.); (W.J.); (S.-M.P.); (S.W.K.); (H.B.); (J.H.J.); (H.K.)
- Department of Science in Korean Medicine, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
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Yellapu NK, Pei D, Nissen E, Thompson JA, Koestler DC. Comprehensive exploration of JQ1 and GSK2801 targets in breast cancer using network pharmacology and molecular modeling approaches. Comput Struct Biotechnol J 2023; 21:3224-3233. [PMID: 38213901 PMCID: PMC10781883 DOI: 10.1016/j.csbj.2023.06.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Revised: 06/02/2023] [Accepted: 06/02/2023] [Indexed: 01/13/2024] Open
Abstract
JQ1 and GSK2801 are bromo domain inhibitors (BDI) known to exhibit enhanced anti-cancer activity when combined with other agents. However, the underlying molecular mechanisms behind such enhanced activity remain unclear. We used network-pharmacology approaches to understand the shared molecular mechanisms behind the enhanced activity of JQ1 and GSK2801 when used together to treat breast cancer (BC). The gene targets of JQ1 and GSK2801 were intersected with known BC-targets and their putative targets against BC were derived. The key genes were explored through gene-ontology-enrichment, Protein-Protein-Interaction (PPI) networking, survival analysis, and molecular modeling simulations. The genes, CTSB, MAPK14, MET, PSEN2 and STAT3, were found to be common targets for both drugs. In total, 49 biological processes, five molecular functions and 61 metabolic pathways were similarly enriched for JQ1 and GSK2801 BC targets among which several terms are related to cancer: IL-17, TNF and JAK-STAT signaling pathways. Survival analyses revealed that all five putative synergistic targets are significantly associated with survival in BC (log-rank p < 0.05). Molecular modeling studies showed stable binding of JQ1 and GSK2801 against their targets. In conclusion, this study explored and illuminated the possible molecular mechanisms behind the enhanced activity of JQ1 and GSK2801 against BC and suggests synergistic action through their similar BC-targets and gene-ontologies.
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Affiliation(s)
- Nanda Kumar Yellapu
- Department of Biostatistics & Data Science, University of Kansas, Medical Center, Kansas City, KS, USA
| | - Dong Pei
- Department of Biostatistics & Data Science, University of Kansas, Medical Center, Kansas City, KS, USA
| | - Emily Nissen
- Department of Biostatistics & Data Science, University of Kansas, Medical Center, Kansas City, KS, USA
| | - Jeffrey A. Thompson
- Department of Biostatistics & Data Science, University of Kansas, Medical Center, Kansas City, KS, USA
| | - Devin C. Koestler
- Department of Biostatistics & Data Science, University of Kansas, Medical Center, Kansas City, KS, USA
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Dinakar YH, Kumar H, Mudavath SL, Jain R, Ajmeer R, Jain V. Role of STAT3 in the initiation, progression, proliferation and metastasis of breast cancer and strategies to deliver JAK and STAT3 inhibitors. Life Sci 2022; 309:120996. [PMID: 36170890 DOI: 10.1016/j.lfs.2022.120996] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 09/13/2022] [Accepted: 09/21/2022] [Indexed: 11/16/2022]
Abstract
INTRODUCTION Breast cancer (BC) accounts for the majority of cancers among the female population. Anomalous activation of various signaling pathways has become an issue of concern. The JAK-STAT signaling pathway is activated in numerous cancers, including BC. STAT3 is widely involved in BCs, as 40 % of BCs display phosphorylated STAT3. JAK-STAT signaling is crucial for proliferation, survival, metastasis and other cellular events associated with the tumor microenvironment. Hence, targeting this pathway has become an area of interest among researchers. KEY FINDINGS This review article focuses on the role of STAT3 in the initiation, proliferation, progression and metastasis of BC. The roles of various phytochemicals, synthetic molecules and biologicals against JAK-STAT and STAT3 in various cancers have been discussed, with special emphasis on BC. SIGNIFICANCE JAK and STAT3 are involved in various phases from initiation to metastasis, and targeting this pathway is a promising approach to inhibit the various stages of BC development and to prevent metastasis. A number of phytochemicals and synthetic and biological molecules have demonstrated potential inhibitory effects on JAK and STAT3, thereby paving the way for the development of better therapeutics against BC.
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Affiliation(s)
- Yirivinti Hayagreeva Dinakar
- Department of Pharmaceutics, JSS College of Pharmacy, JSS Academy of Higher Education and Research, Mysuru 570015, Karnataka, India
| | - Hitesh Kumar
- Department of Pharmaceutics, JSS College of Pharmacy, JSS Academy of Higher Education and Research, Mysuru 570015, Karnataka, India
| | - Shyam Lal Mudavath
- Infectious Disease Biology Laboratory, Chemical Biology Unit, Institute of Nano Science and Technology, Mohali 140306, Punjab, India
| | - Rupshee Jain
- Department of Pharmaceutical Chemistry, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Mysuru 570015, India
| | - Ramkishan Ajmeer
- Central Drugs Standard Control Organization, East Zone, Kolkata 700020, West Bengal, India
| | - Vikas Jain
- Department of Pharmaceutics, JSS College of Pharmacy, JSS Academy of Higher Education and Research, Mysuru 570015, Karnataka, India.
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Pan L, Chen X, Rassool FV, Li C, Lin J. LLL12B, a Novel Small-Molecule STAT3 Inhibitor, Induces Apoptosis and Suppresses Cell Migration and Tumor Growth in Triple-Negative Breast Cancer Cells. Biomedicines 2022; 10:biomedicines10082003. [PMID: 36009550 PMCID: PMC9405793 DOI: 10.3390/biomedicines10082003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 08/12/2022] [Accepted: 08/14/2022] [Indexed: 11/16/2022] Open
Abstract
Persistent STAT3 signaling plays a pivotal role in human tumor malignancy, including triple-negative breast cancer (TNBC). There are few treatment options currently available for TNBC; thus, given its importance to cancer, STAT3 is a potential cancer therapeutic target and is the focus of drug discovery efforts. In this study, we tested a novel orally bioavailable small-molecule STAT3 inhibitor, LLL12B, in human MDA-MB-231, SUM159, and murine 4T1 TNBC cell lines. TNBC cells frequently expressed persistent STAT3 phosphorylation and their cell viability was sensitive to STAT3 knockdown by siRNA. LLL12B selectively inhibited the IL-6-mediated induction of STAT3 phosphorylation, but had little effect on the IFN-γ-mediated induction of STAT1 phosphorylation nor the EGF-mediated induction of ERK phosphorylation. In addition, targeting STAT3 with LLL12B induced apoptosis, reduced colony formation ability, and inhibited cell migration in TNBC cells. Furthermore, LLL12B suppressed the tumor growth of the MDA-MB-231 TNBC cells in a mammary fat pad mouse tumor model in vivo. Together, our findings support the concept that targeting persistent STAT3 signaling using the novel small-molecule LLL12B is a potential approach for TNBC therapy.
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Affiliation(s)
- Li Pan
- Department of Biochemistry and Molecular Biology, School of Medicine, University of Maryland, Baltimore, MD 21201, USA
| | - Xiang Chen
- Department of Biochemistry and Molecular Biology, School of Medicine, University of Maryland, Baltimore, MD 21201, USA
| | - Feyruz Virgilia Rassool
- Department of Radiation Oncology, School of Medicine, University of Maryland, Baltimore, MD 21201, USA
| | - Chenglong Li
- Department of Medicinal Chemistry, College of Pharmacy, University of Florida, Gainesville, FL 32610, USA
| | - Jiayuh Lin
- Department of Biochemistry and Molecular Biology, School of Medicine, University of Maryland, Baltimore, MD 21201, USA
- Correspondence:
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Stenckova M, Nenutil R, Vojtesek B, Coates PJ. Stat3 Tyrosine 705 and Serine 727 Phosphorylation Associate With Clinicopathological Characteristics and Distinct Tumor Cell Phenotypes in Triple-Negative Breast Cancer. Pathol Oncol Res 2022; 28:1610592. [PMID: 36017196 PMCID: PMC9395589 DOI: 10.3389/pore.2022.1610592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Accepted: 07/11/2022] [Indexed: 11/13/2022]
Abstract
Signal transducer and activator of transcription 3 (Stat3) is responsible for many aspects of normal development and contributes to the development and progression of cancer through regulating epithelial cell identity and cancer stem cells. In breast cancer, Stat3 is associated with triple-negative breast cancers (TNBC) and its function has been related to the activation of p63, itself a marker of basal-like TNBC and a master regulator of stem cell activities. Stat3 activation is controlled by dual phosphorylation at tyrosine 705 (pTyr705) and serine 727 (pSer727), although it is unclear whether these have equivalent effects, and whether they are related or independent events. To address these issues, we investigated Stat3 phosphorylation at the two sites by immunohistochemistry in 173 patients with TNBC. Stat3 phosphorylation was assessed by automated quantitative measurements of digitized scanned images and classified into four categories based on histoscore. The results were analyzed for associations with multiple markers of tumor phenotype, proliferation, BRCA status, and clinicopathological characteristics. We show that the levels of pTyr705- and pSer727-Stat3 were independent in 34% of tumors. High pTyr705-Stat3 levels were associated with the luminal differentiation markers ERβ/AR and MUC1, whereas tumors with high levels of pSer727-Stat3 were more likely to be positive for the basal marker CK5/6, but were independent of p63 and were EGFR negative. Combined high pSer727- and low Tyr705-Stat3 phosphorylation associated with basal-like cancer. Although high Stat3 phosphorylation levels were associated with less aggressive tumor characteristics, they did not associate with improved survival, indicating that Stat3 phosphorylation is an unfavorable indicator for tumors with an otherwise good prognosis according to clinicopathological characteristics. These findings also show that pTyr705-Stat3 and pSer727-Stat3 associate with specific breast tumor phenotypes, implying that they exert distinct functional activities in breast cancer.
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Affiliation(s)
- Michaela Stenckova
- Masaryk Memorial Cancer Institute, Research Center for Applied Molecular Oncology (RECAMO), Brno, Czechia
- Department of Experimental Biology, Faculty of Science, Masaryk University, Brno, Czechia
- *Correspondence: Michaela Stenckova, ; Philip J. Coates,
| | - Rudolf Nenutil
- Masaryk Memorial Cancer Institute, Research Center for Applied Molecular Oncology (RECAMO), Brno, Czechia
| | - Borivoj Vojtesek
- Masaryk Memorial Cancer Institute, Research Center for Applied Molecular Oncology (RECAMO), Brno, Czechia
| | - Philip J. Coates
- Masaryk Memorial Cancer Institute, Research Center for Applied Molecular Oncology (RECAMO), Brno, Czechia
- *Correspondence: Michaela Stenckova, ; Philip J. Coates,
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Iliev P, Hanke D, Page BDG. STAT Protein Thermal Shift Assays to Monitor Protein-Inhibitor Interactions. Chembiochem 2022; 23:e202200039. [PMID: 35698729 DOI: 10.1002/cbic.202200039] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 06/09/2022] [Indexed: 11/06/2022]
Abstract
STAT3 protein is a sought-after drug target as it plays a key role in the progression of cancer. Many STAT3 inhibitors (STAT3i) have been reported, but accumulating evidence suggests many of these act as off-target/indirect inhibitors of STAT signaling. Herein, we describe the STAT protein thermal shift assay (PTSA) as a novel target engagement tool, which we used to test the binding of known STAT3i to STAT3 and STAT1. This revealed STATTIC, BP-1-102, and Cpd188 destabilized both STATs and produced unique migratory patterns on SDS-PAGE gels, suggesting covalent protein modifications. Mass spectrometry experiments confirmed these compounds are nonspecifically alkylating STATs, as well as an unrelated protein, NUDT5. These experiments have highlighted the benefits of PTSA to investigate interactions with STAT proteins and helped reveal novel reactivity of Cpd188. The described PTSA represents a promising chemical biology tool that could be applied to an array of other protein targets.
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Affiliation(s)
- Petar Iliev
- The University of British Columbia, Pharmaceutical Sciences, CANADA
| | - Danielle Hanke
- The University of British Columbia, Pharmaceutical Sciences, CANADA
| | - Brent D G Page
- The University of British Columbia, Faculty of Pharmaceutical Sciences, 2405 Wesbrook Mall, V6T1Z3, Vancouver, CANADA
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IL-27 promotes decidualization via the STAT3-ESR/PGR regulatory axis. J Reprod Immunol 2022; 151:103623. [DOI: 10.1016/j.jri.2022.103623] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 03/15/2022] [Accepted: 04/08/2022] [Indexed: 01/18/2023]
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Manore SG, Doheny DL, Wong GL, Lo HW. IL-6/JAK/STAT3 Signaling in Breast Cancer Metastasis: Biology and Treatment. Front Oncol 2022; 12:866014. [PMID: 35371975 PMCID: PMC8964978 DOI: 10.3389/fonc.2022.866014] [Citation(s) in RCA: 85] [Impact Index Per Article: 42.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Accepted: 02/16/2022] [Indexed: 12/12/2022] Open
Abstract
Breast cancer is the most commonly diagnosed cancer in women. Metastasis is the primary cause of mortality for breast cancer patients. Multiple mechanisms underlie breast cancer metastatic dissemination, including the interleukin-6 (IL-6)-mediated signaling pathway. IL-6 is a pleiotropic cytokine that plays an important role in multiple physiological processes including cell proliferation, immune surveillance, acute inflammation, metabolism, and bone remodeling. IL-6 binds to the IL-6 receptor (IL-6Rα) which subsequently binds to the glycoprotein 130 (gp130) receptor creating a signal transducing hexameric receptor complex. Janus kinases (JAKs) are recruited and activated; activated JAKs, in turn, phosphorylate signal transducer and activator of transcription 3 (STAT3) for activation, leading to gene regulation. Constitutively active IL-6/JAK/STAT3 signaling drives cancer cell proliferation and invasiveness while suppressing apoptosis, and STAT3 enhances IL-6 signaling to promote a vicious inflammatory loop. Aberrant expression of IL-6 occurs in multiple cancer types and is associated with poor clinical prognosis and metastasis. In breast cancer, the IL-6 pathway is frequently activated, which can promote breast cancer metastasis while simultaneously suppressing the anti-tumor immune response. Given these important roles in human cancers, multiple components of the IL-6 pathway are promising targets for cancer therapeutics and are currently being evaluated preclinically and clinically for breast cancer. This review covers the current biological understanding of the IL-6 signaling pathway and its impact on breast cancer metastasis, as well as, therapeutic interventions that target components of the IL-6 pathway including: IL-6, IL-6Rα, gp130 receptor, JAKs, and STAT3.
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Affiliation(s)
- Sara G Manore
- Department of Cancer Biology, Wake Forest University School of Medicine, Winston-Salem, NC, United States
| | - Daniel L Doheny
- Department of Cancer Biology, Wake Forest University School of Medicine, Winston-Salem, NC, United States
| | - Grace L Wong
- Department of Cancer Biology, Wake Forest University School of Medicine, Winston-Salem, NC, United States
| | - Hui-Wen Lo
- Department of Cancer Biology, Wake Forest University School of Medicine, Winston-Salem, NC, United States.,Wake Forest Baptist Comprehensive Cancer Center, Wake Forest University School of Medicine, Winston-Salem, NC, United States
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12
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Nakagawa T, Oda G, Kawachi H, Ishikawa T, Okamoto K, Uetake H. Nuclear Expression of p-STAT3 Is Associated with Poor Prognosis in ER(−) Breast Cancer. Clin Pract 2022; 12:157-167. [PMID: 35314590 PMCID: PMC8938801 DOI: 10.3390/clinpract12020020] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 02/22/2022] [Accepted: 02/24/2022] [Indexed: 12/30/2022] Open
Abstract
The activation of signal transducer and activator of transcription 3 (STAT3) has been reported in several types of cancer, where it acts as an oncogene. However, in breast cancer, the clinical role of STAT3 remains unclear. In the present study, the association between phosphorylated-STAT3 (p-STAT3) expression and clinicopathological/biological factors was examined in each subtype. p-STAT3 expression was examined in 135 cases of breast cancer by immunohistochemistry. p-STAT3 expression was not associated with clinicopathological/biological factors and prognosis in a complete cohort of breast cancer cases. However, in patients with estrogen receptor-negative (ER(−)) breast cancer and triple-negative breast cancer (TNBC), multivariate analysis showed that higher p-STAT3 expression was significantly associated with a short relapse-free survival (p = 0.029, HR 5.37, 95%CI 1.19–24.29). TNBC patients with p-STAT3 overexpression were found to have a poor prognosis (p = 0.029, HR 5.37, 95%CI 1.19–24.29). On the other hand, in ER(+) breast cancer, p-STAT3 overexpression was associated with a favorable prognosis (p = 0.034, HR 9.48, 95%CI 1.18–76.21). The present results suggested that STAT3 expression may play a different role in ER(−) and ER(+) breast cancer. In the future, the pharmacological inhibition of STAT3 expression may serve as an effective therapeutic strategy for ER(−) breast cancer, particularly TNBC.
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Affiliation(s)
- Tsuyoshi Nakagawa
- Department of Specialized Surgeries, Graduate School, Tokyo Medical and Dental University, Bunkyou-ku, Tokyo 113-8519, Japan; (G.O.); (T.I.); (K.O.); (H.U.)
- Correspondence: ; Tel.: +81-3-5803-5261
| | - Goshi Oda
- Department of Specialized Surgeries, Graduate School, Tokyo Medical and Dental University, Bunkyou-ku, Tokyo 113-8519, Japan; (G.O.); (T.I.); (K.O.); (H.U.)
| | - Hiroshi Kawachi
- Department of Pathology, Tokyo Medical and Dental University, Bunkyou-ku, Tokyo 113-8519, Japan;
| | - Toshiaki Ishikawa
- Department of Specialized Surgeries, Graduate School, Tokyo Medical and Dental University, Bunkyou-ku, Tokyo 113-8519, Japan; (G.O.); (T.I.); (K.O.); (H.U.)
| | - Kentaro Okamoto
- Department of Specialized Surgeries, Graduate School, Tokyo Medical and Dental University, Bunkyou-ku, Tokyo 113-8519, Japan; (G.O.); (T.I.); (K.O.); (H.U.)
| | - Hiroyuki Uetake
- Department of Specialized Surgeries, Graduate School, Tokyo Medical and Dental University, Bunkyou-ku, Tokyo 113-8519, Japan; (G.O.); (T.I.); (K.O.); (H.U.)
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13
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Keeratichamroen S, Lirdprapamongkol K, Thongnest S, Boonsombat J, Chawengrum P, Sornprachum T, Sirirak J, Verathamjamras C, Ornnork N, Ruchirawat S, Svasti J. JAK2/STAT3‑mediated dose‑dependent cytostatic and cytotoxic effects of sesquiterpene lactones from Gymnanthemum extensum on A549 human lung carcinoma cells. Oncol Rep 2021; 47:6. [PMID: 34738622 PMCID: PMC8600427 DOI: 10.3892/or.2021.8217] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Accepted: 10/04/2021] [Indexed: 12/19/2022] Open
Abstract
Due to drug resistance and disease recurrence, lung cancer remains one of the primary cancer-related causes of death in both men and women worldwide. In addition, lung cancer is clinically silent and thus most patients are at an advanced stage at the time of diagnosis. The limited efficiency of current conventional chemotherapies necessitates the search for novel effective anticancer agents. The present study demonstrated the anti-proliferative effect and apoptosis-inducing activity of three sesquiterpene lactones isolated from Gymnanthemum extensum, vernodalin (VDa), vernolepin (VLe) and vernolide (VLi), on A549 human lung cancer cells. Treatment with sub-cytotoxic doses (cell viability remaining >75%) of VDa, VLe and VLi, arrested progression of the A549 cell cycle at the G0/G1 phase, while cytotoxic doses of the three compounds induced G2/M phase arrest and apoptosis. Mechanistic studies revealed that VDa, VLe and VLi may exert their anti-tumor activity through the JAK2/STAT3 pathway. Molecular docking analysis confirmed that VDa, VLe and VLi formed hydrogen bonds with the FERM domain of JAK2 protein. Overall, the present study highlighted the potential therapeutic value of VDa, VLe and VLi to be further developed as anticancer agents for the treatment of lung cancer.
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Affiliation(s)
| | | | - Sanit Thongnest
- Laboratory of Natural Products, Chulabhorn Research Institute, Bangkok 10210, Thailand
| | - Jutatip Boonsombat
- Laboratory of Natural Products, Chulabhorn Research Institute, Bangkok 10210, Thailand
| | - Pornsuda Chawengrum
- Program in Chemical Sciences, Chulabhorn Graduate Institute, Chulabhorn Royal Academy, Bangkok 10210, Thailand
| | - Thiwaree Sornprachum
- Laboratory of Biochemistry, Chulabhorn Research Institute, Bangkok 10210, Thailand
| | - Jitnapa Sirirak
- Department of Chemistry, Faculty of Science, Silpakorn University, Nakhon Pathom 73000, Thailand
| | - Chris Verathamjamras
- Laboratory of Biochemistry, Chulabhorn Research Institute, Bangkok 10210, Thailand
| | - Narittira Ornnork
- Laboratory of Biochemistry, Chulabhorn Research Institute, Bangkok 10210, Thailand
| | - Somsak Ruchirawat
- Center of Excellence on Environmental Health and Toxicology, Ministry of Education, Bangkok 10400, Thailand
| | - Jisnuson Svasti
- Laboratory of Biochemistry, Chulabhorn Research Institute, Bangkok 10210, Thailand
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14
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Discovery of Novel Polycyclic Polyprenylated Acylphloroglucinols from the Fruits of Garcinia xanthochymus as Antitumor Agents by Suppressing the STAT3 Signaling. Int J Mol Sci 2021; 22:ijms221910365. [PMID: 34638708 PMCID: PMC8508737 DOI: 10.3390/ijms221910365] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 09/20/2021] [Accepted: 09/22/2021] [Indexed: 12/18/2022] Open
Abstract
Pharmacologic studies have revealed that polycyclic polyprenylated acylphloroglucinols (PPAPs) collectively exhibit a broad range of biological activities, including antineoplastic potential. Here, six new PPAPs, named garcixanthochymones F–K (3, 5, 7, 8, 11, and 15), together with nine known analogues were isolated from the fruits of Garcinia xanthochymus. Their structures were elucidated based on the spectroscopic data, including UV, HRESIMS, and NMR, and quantum chemical calculations. All the isolated PPAPs were tested for anti-proliferative activity against four human tumor cell lines, including SGC7901, A549, HepG2, and MCF-7. Most of the PPAPs possessed high anti-proliferative activity with IC50 values in the range of 0.89 to 36.98 μM, and significant apoptosis was observed in MCF-7 cells exposed to compounds 2 and 5. Besides, docking results showed that compounds 2 and 5 could strongly combine with the Src homology 2 (SH2) domain of STAT3 via hydrogen bond and hydrophobic interaction, which is one of the key oncogenes and crucial therapeutic targets. Furthermore, compounds 2 and 5 efficiently downregulated the expression of p-STAT3Tyr705 and pivotal effector proteins involved in oncogenic signaling pathways of MCF-7 cells.
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15
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Ziadi W, Boussetta S, Elkamel S, Pakstis AJ, Kidd KK, Medimegh I, Ben Ammar Elgaaied A, Cherni L. STAT3 polymorphisms in North Africa and its implication in breast cancer. Mol Genet Genomic Med 2021; 9:e1744. [PMID: 34251094 PMCID: PMC8404238 DOI: 10.1002/mgg3.1744] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 05/28/2021] [Accepted: 06/22/2021] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Only a few studies have investigated the association of single nucleotide polymorphisms in STAT3 gene with the susceptibility to cancer and response to chemotherapy. Our aim was to determine the allele frequencies of rs3869550, rs957971, and rs7211777 at the STAT3 gene in North African populations and compare them to 1000 genomes populations, and to investigate their relation with cancer. METHODS The targeted SNPs have been analyzed in six Tunisian populations and a sample of Libyans using TaqMan® Assay. The results were compared to 1000 Genomes Project population samples. Targeting of the regions encompassing the three SNPs by micro-ARN was assessed using miR databases. RESULTS The analysis of the 3 SNPs showed that North African populations were close to South Asians. As expected, African populations presented a significant frequency of the ancestral CCG haplotype in contrast to other populations where the fully derived TGA haplotype was more frequent. The presence and diversity of rare haplotypes at STAT3 in North African populations could have been generated by recombination between the two major haplotypes. A screening of the micro-RNA databases showed that the STAT3 region with the mutated allele of rs7211777 (G>A) could be targeted by miR hsa-miR-3606-5p, which also targets genes involved in breast cancer.
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Affiliation(s)
- Wafa Ziadi
- Laboratory of Genetics, Immunology and Human Pathology, Faculty of Science of Tunis, University of Tunis El Manar, Tunis, Tunisia
| | - Sami Boussetta
- Laboratory of Genetics, Immunology and Human Pathology, Faculty of Science of Tunis, University of Tunis El Manar, Tunis, Tunisia
| | - Sarra Elkamel
- Laboratory of Genetics, Immunology and Human Pathology, Faculty of Science of Tunis, University of Tunis El Manar, Tunis, Tunisia
| | - Andrew J Pakstis
- Department of Genetics, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Kenneth K Kidd
- Department of Genetics, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Imen Medimegh
- Laboratory of Genetics, Immunology and Human Pathology, Faculty of Science of Tunis, University of Tunis El Manar, Tunis, Tunisia
| | - Amel Ben Ammar Elgaaied
- Laboratory of Genetics, Immunology and Human Pathology, Faculty of Science of Tunis, University of Tunis El Manar, Tunis, Tunisia
| | - Lotfi Cherni
- Laboratory of Genetics, Immunology and Human Pathology, Faculty of Science of Tunis, University of Tunis El Manar, Tunis, Tunisia.,High Institute of Biotechnology, University of Monastir, Monastir, Tunisia
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16
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Novel STAT3 small-molecule inhibitors identified by structure-based virtual ligand screening incorporating SH2 domain flexibility. Pharmacol Res 2021; 169:105637. [PMID: 33932608 DOI: 10.1016/j.phrs.2021.105637] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 04/20/2021] [Accepted: 04/21/2021] [Indexed: 01/05/2023]
Abstract
Efforts to develop STAT3 inhibitors have focused on its SH2 domain starting with short phosphotyrosylated peptides based on STAT3 binding motifs, e.g. pY905LPQTV within gp130. Despite binding to STAT3 with high affinity, issues regarding stability, bioavailability, and membrane permeability of these peptides, as well as peptidomimetics such as CJ-887, have limited their further clinical development and led to interest in small-molecule inhibitors. Some small molecule STAT3 inhibitors, identified using structure-based virtual ligand screening (SB-VLS); while having favorable drug-like properties, suffer from weak binding affinities, possibly due to the high flexibility of the target domain. We conducted molecular dynamic (MD) simulations of the SH2 domain in complex with CJ-887, and used an averaged structure from this MD trajectory as an "induced-active site" receptor model for SB-VLS of 110,000 compounds within the SPEC database. Screening was followed by re-docking and re-scoring of the top 30% of hits, selection for hit compounds that directly interact with pY + 0 binding pocket residues R609 and S613, and testing for STAT3 targeting in vitro, which identified two lead hits with good activity and favorable drug-like properties. Unlike most small-molecule STAT3 inhibitors previously identified, which contain negatively-charged moieties that mediate binding to the pY + 0 binding pocket, these compounds are uncharged and likely will serve as better candidates for anti-STAT3 drug development. IMPLICATIONS: SB-VLS, using an averaged structure from molecular dynamics (MD) simulations of STAT3 SH2 domain in a complex with CJ-887, a known peptidomimetic binder, identify two highly potent, neutral, low-molecular weight STAT3-inhibitors with favorable drug-like properties.
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17
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Zhai W, Ye X, Wang Y, Feng Y, Wang Y, Lin Y, Ding L, Yang L, Wang X, Kuang Y, Fu X, Eugene Chin Y, Jia B, Zhu B, Ren F, Chang Z. CREPT/RPRD1B promotes tumorigenesis through STAT3-driven gene transcription in a p300-dependent manner. Br J Cancer 2021; 124:1437-1448. [PMID: 33531691 PMCID: PMC8039031 DOI: 10.1038/s41416-021-01269-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2019] [Revised: 11/14/2020] [Accepted: 01/05/2021] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Signal transducer and activator of transcription 3 (STAT3) has been shown to upregulate gene transcription during tumorigenesis. However, how STAT3 initiates transcription remains to be exploited. This study is to reveal the role of CREPT (cell cycle-related and elevated-expression protein in tumours, or RPRD1B) in promoting STAT3 transcriptional activity. METHODS BALB/c nude mice, CREPT overexpression or deletion cells were employed for the assay of tumour formation, chromatin immunoprecipitation, assay for transposase-accessible chromatin using sequencing. RESULTS We demonstrate that CREPT, a recently identified oncoprotein, enhances STAT3 transcriptional activity to promote tumorigenesis. CREPT expression is positively correlated with activation of STAT3 signalling in tumours. Deletion of CREPT led to a decrease, but overexpression of CREPT resulted in an increase, in STAT3-initiated tumour cell proliferation, colony formation and tumour growth. Mechanistically, CREPT interacts with phosphorylated STAT3 (p-STAT3) and facilitates p-STAT3 to recruit p300 to occupy at the promoters of STAT3-targeted genes. Therefore, CREPT and STAT3 coordinately facilitate p300-mediated acetylation of histone 3 (H3K18ac and H3K27ac), further augmenting RNA polymerase II recruitment. Accordingly, depletion of p300 abolished CREPT-enhanced STAT3 transcriptional activity. CONCLUSIONS We propose that CREPT is a co-activator of STAT3 for recruiting p300. Our study provides an alternative strategy for the therapy of cancers related to STAT3.
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Affiliation(s)
- Wanli Zhai
- State Key Laboratory of Membrane Biology, School of Medicine, Tsinghua University, Beijing, China.,Tsinghua-Peking Joint Center for Life Sciences, School of Life Science, Tsinghua University, Beijing, China
| | - Xiongjun Ye
- Urology and Lithotripsy Center, Peking University People's Hospital, Beijing, China
| | - Yinyin Wang
- State Key Laboratory of Membrane Biology, School of Medicine, Tsinghua University, Beijing, China
| | - Yarui Feng
- State Key Laboratory of Membrane Biology, School of Medicine, Tsinghua University, Beijing, China
| | - Ying Wang
- State Key Laboratory of Membrane Biology, School of Medicine, Tsinghua University, Beijing, China
| | - Yuting Lin
- State Key Laboratory of Membrane Biology, School of Medicine, Tsinghua University, Beijing, China.,Tsinghua-Peking Joint Center for Life Sciences, School of Life Science, Tsinghua University, Beijing, China
| | - Lidan Ding
- State Key Laboratory of Membrane Biology, School of Medicine, Tsinghua University, Beijing, China
| | - Liu Yang
- State Key Laboratory of Membrane Biology, School of Medicine, Tsinghua University, Beijing, China
| | - Xuning Wang
- Department of General Surgery, Chinese PLA General Hospital, Beijing, China
| | - Yanshen Kuang
- Department of General Surgery, Chinese PLA General Hospital, Beijing, China
| | - Xinyuan Fu
- Laboratory of Human Diseases and Immunotherapies, West China Hospital, Sichuan University, Beijing, China
| | - Y Eugene Chin
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou, China
| | - Baoqing Jia
- Department of General Surgery, Chinese PLA General Hospital, Beijing, China
| | - Bingtao Zhu
- State Key Laboratory of Membrane Biology, School of Medicine, Tsinghua University, Beijing, China.
| | - Fangli Ren
- State Key Laboratory of Membrane Biology, School of Medicine, Tsinghua University, Beijing, China.
| | - Zhijie Chang
- State Key Laboratory of Membrane Biology, School of Medicine, Tsinghua University, Beijing, China.
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18
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Mosca A, Restif O, Dobson J, Hughes K. Expression of Phosphorylated Signal Transducer and Activator of Transcription 3 and its Prognostic Significance in Canine Anal Sac Adenocarcinoma. J Comp Pathol 2020; 182:15-21. [PMID: 33494902 DOI: 10.1016/j.jcpa.2020.11.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 08/30/2020] [Accepted: 11/03/2020] [Indexed: 12/12/2022]
Abstract
Prognostication in canine anal sac adenocarcinomas (ASACs) is difficult due to conflicting evidence regarding metastatic rates and median survival times (MSTs). The transcription factor signal transducer and activator of transcription 3 (STAT3) is a prognostic predictor in several human cancers. The aim of this retrospective study was to assess STAT3 expression in ASACs and to explore its association with clinical presentation and outcome. We hypothesized that STAT3 expression would distinguish tumours with early versus late metastasis. Records from The Queen's Veterinary School Hospital, Cambridge, UK, were searched for dogs diagnosed with ASAC from 2008 to 2019. Immunohistochemical expression of phosphorylated STAT3 (pSTAT3) was assessed in primary tumours (n = 57) and metastatic lymph nodes (n = 30) and MSTs were calculated for cases with low and high pSTAT3 expression. Of the 57 cases assessed, 27 presented with primary tumours but no metastasis and 30 with both primary and local metastatic disease. Most cases (50/57) expressed nuclear pSTAT3 within neoplastic cells in both primary tumour and metastatic lymph nodes. pSTAT3 expression was predominantly observed in neoplastic cells at the edges of neoplastic lobules, suggesting a potential role in invasion. There was no significant difference in pSTAT3 expression between cases metastatic at presentation and those that did not have detectable metastasis at presentation. There was no significant difference between the MSTs in cases with high and low pSTAT3 expression. Cases that presented with metastatic disease had shorter MSTs (395 days) than those with primary tumours alone (623 days). Although pSTAT3 is variably expressed in primary and metastatic ASAC cells, pSTAT3 did not provide prognostic information for canine ASAC.
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Affiliation(s)
- Andrea Mosca
- The Queen's Veterinary School Hospital, Cambridge University Veterinary School, Cambridge, UK.
| | - Olivier Restif
- The Queen's Veterinary School Hospital, Cambridge University Veterinary School, Cambridge, UK
| | - Jane Dobson
- The Queen's Veterinary School Hospital, Cambridge University Veterinary School, Cambridge, UK
| | - Katherine Hughes
- The Queen's Veterinary School Hospital, Cambridge University Veterinary School, Cambridge, UK
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19
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van Pul KM, Vuylsteke RJCLM, de Beijer MTA, van de Ven R, van den Tol MP, Stockmann HBAC, de Gruijl TD. Breast cancer-induced immune suppression in the sentinel lymph node is effectively countered by CpG-B in conjunction with inhibition of the JAK2/STAT3 pathway. J Immunother Cancer 2020; 8:jitc-2020-000761. [PMID: 33046620 PMCID: PMC7552844 DOI: 10.1136/jitc-2020-000761] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/07/2020] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND We previously showed selectively hampered activation of lymph node-resident (LNR) dendritic cell (DC) subsets in the breast cancer (BrC) sentinel lymph node (SLN) to precede a state of profound T cell anergy. Reactivating these DC subsets by intratumoral delivery of the Toll-like receptor-9 (TLR9) agonist CpG-B could potentially offer a promising immune therapeutic strategy to combat this immune suppression and prevent disease spread. Unfortunately, CpG-B can limit its own immune stimulatory activity through direct TLR9-mediated activation of signal transducer and activator of transcription 3 (STAT3), pinpointed as a key regulator of immune suppression in the tumor microenvironment. Here, we have investigated whether in vitro exposure to CpG-B, with or without simultaneous inhibition of STAT3 signaling, could overcome immune suppression in BrC SLN. METHODS Immune modulatory effects of CpG-B (CPG7909) with or without the JAK2/STAT3 inhibitor (STAT3i) AG490 were assessed in ex vivo cultured BrC SLN-derived single-cell suspensions (N=29). Multiparameter flow cytometric analyses were conducted for DC and T cell subset characterization and assessment of (intracellular) cytokine profiles. T cell reactivity against the BrC-associated antigen Mammaglobin-A was determined by means of interferon-γ ELISPOT assay. RESULTS Although CpG-B alone induced activation of all DC subsets, combined inhibition of the JAK2/STAT3 pathway resulted in superior DC maturation (ie, increased CD83 expression), with most profound activation and maturation of LNR DC subsets. Furthermore, combined CpG-B and JAK2/STAT3 inhibition promoted Th1 skewing by counterbalancing the CpG-induced Th2/regulatory T cell response and significantly enhanced Mammaglobin-A specific T cell reactivity. CONCLUSION Ex vivo immune modulation of the SLN by CpG-B and simultaneous JAK2/STAT3 inhibition can effectively overcome BrC-induced immune suppression by preferential activation of LNR DC, ultimately restoring type 1-mediated antitumor immunity, thereby securing a BrC-specific T cell response. These findings provide a clear rationale for clinical exploration of SLN-immune potentiation through local CpG/STAT3i administration in patients with BrC.
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Affiliation(s)
- Kim M van Pul
- Medical Oncology-Cancer Center Amsterdam, Amsterdam UMC-VUMC location, Amsterdam, The Netherlands.,Surgical Oncology, Amsterdam UMC-VUMC location, Amsterdam, The Netherlands
| | | | - Monique T A de Beijer
- Medical Oncology-Cancer Center Amsterdam, Amsterdam UMC-VUMC location, Amsterdam, The Netherlands
| | - Rieneke van de Ven
- Medical Oncology and Otolaryngology-Head and Neck Surgery-Cancer Center Amsterdam, Amsterdam UMC-VUMC location, Amsterdam, The Netherlands
| | | | | | - Tanja D de Gruijl
- Medical Oncology-Cancer Center Amsterdam, Amsterdam UMC-VUMC location, Amsterdam, The Netherlands
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20
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Nilsson L, Sandén E, Khazaei S, Tryggvadottir H, Nodin B, Jirström K, Borgquist S, Isaksson K, Jernström H. Patient Characteristics Influence Activated Signal Transducer and Activator of Transcription 3 (STAT3) Levels in Primary Breast Cancer-Impact on Prognosis. Front Oncol 2020; 10:1278. [PMID: 32850390 PMCID: PMC7403202 DOI: 10.3389/fonc.2020.01278] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Accepted: 06/19/2020] [Indexed: 12/23/2022] Open
Abstract
Background: Activated signal transducer and activator of transcription 3 (pSTAT3) is often present in breast cancer, but its prognostic impact is still unclear. We investigated how breast tumor-specific pSTAT3Y705 levels are associated with patient and tumor characteristics and risk of recurrence. Materials and Methods: Primary breast cancer patients without preoperative treatment were included preoperatively. The patients were treated in Lund, Sweden, in 2002–2012 and followed until 2016. Levels of pSTAT3Y705 were evaluated in 867 tumors using tissue microarrays with immunohistochemistry and categorized according to the H-score as negative (0–9; 24.2%), intermediate (10–150; 69.9%), and high (160–300; 5.9%). Results: Patients were followed for up to 13 years, and 137 recurrences (88 distant) were recorded. Higher pSTAT3Y705 levels were associated with patient characteristics including younger age, any alcohol consumption, higher age at first child birth, and smaller body size, as well as tumor characteristics including smaller tumor size, lower histological grade, lymph node negativity, progesterone receptor positivity, and HER2 negativity (all Ptrends ≤ 0.04). Higher pSTAT3Y705 levels were associated with lower risk of early recurrences (LogRank Ptrend = 0.10; 5-year LogRank Ptrend = 0.004) and distant metastases (LogRank Ptrend = 0.045; 5-year LogRank Ptrend = 0.0007), but this was not significant in the multivariable models. There was significant effect modification between tamoxifen treatment and pSTAT3Y705 negativity on the recurrence risk in chemonaïve patients with estrogen receptor positive tumors [adjusted hazard ratio (HR) 0.38; Pinteraction = 0.046]. Conclusion: Higher pSTAT3Y705 levels were associated with several patient and tumor characteristics that are mainly associated with good prognosis and a tendency toward lower risk for early recurrences. In the future, these results may help guide the selection of patients for trials with drugs targeting the STAT3 pathway.
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Affiliation(s)
- Linn Nilsson
- Department of Clinical Sciences in Lund, Oncology, Lund University and Skåne University Hospital, Lund, Sweden.,Department of Medical Physics and Engineering, Växjö Central Hospital, Växjö, Sweden.,Department of Research and Development, Region Kronoberg, Växjö, Sweden
| | - Emma Sandén
- Department of Clinical Sciences in Lund, Oncology, Lund University and Skåne University Hospital, Lund, Sweden
| | - Somayeh Khazaei
- Department of Clinical Sciences in Lund, Oncology, Lund University and Skåne University Hospital, Lund, Sweden
| | - Helga Tryggvadottir
- Department of Clinical Sciences in Lund, Oncology, Lund University and Skåne University Hospital, Lund, Sweden
| | - Björn Nodin
- Department of Clinical Sciences in Lund, Oncology, Lund University and Skåne University Hospital, Lund, Sweden
| | - Karin Jirström
- Department of Clinical Sciences in Lund, Oncology, Lund University and Skåne University Hospital, Lund, Sweden
| | - Signe Borgquist
- Department of Clinical Sciences in Lund, Oncology, Lund University and Skåne University Hospital, Lund, Sweden.,Department of Oncology, Aarhus University and Aarhus University Hospital, Aarhus, Denmark
| | - Karolin Isaksson
- Department of Clinical Sciences in Lund, Surgery, Lund University, Lund, Sweden.,Department of Surgery, Central Hospital Kristianstad, Kristianstad, Sweden
| | - Helena Jernström
- Department of Clinical Sciences in Lund, Oncology, Lund University and Skåne University Hospital, Lund, Sweden
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Kwong AJ, Scheidt KA. Non-'classical' MEKs: A review of MEK3-7 inhibitors. Bioorg Med Chem Lett 2020; 30:127203. [PMID: 32389527 PMCID: PMC7299838 DOI: 10.1016/j.bmcl.2020.127203] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 04/16/2020] [Accepted: 04/17/2020] [Indexed: 02/06/2023]
Abstract
The MAPK pathways are an enduring area of interest due to their essential roles in cell processes. Increased expression and activity can lead to a multitude of diseases, sparking research efforts in developing inhibitors against these kinases. Though great strides have been made in developing MEK1/2 inhibitors, there is a notable lack of chemical probes for MEK3-7, given their central role in stimuli response, cell growth, and development. This review summarizes the progress that has been made on developing small molecule probes for MEK3-7, the specific disease states in which they have been studied, and their potential to become novel therapeutics.
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Affiliation(s)
- Ada J Kwong
- Department of Chemistry, Center for Molecular Innovation and Drug Discovery, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208, United States
| | - Karl A Scheidt
- Department of Chemistry, Center for Molecular Innovation and Drug Discovery, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208, United States.
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Jin X, Wang C, wang L. Costunolide inhibits osteosarcoma growth and metastasis via suppressing STAT3 signal pathway. Biomed Pharmacother 2020; 121:109659. [DOI: 10.1016/j.biopha.2019.109659] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 10/30/2019] [Accepted: 11/06/2019] [Indexed: 01/05/2023] Open
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Fathi Maroufi N, Rashidi MR, Vahedian V, Akbarzadeh M, Fattahi A, Nouri M. Therapeutic potentials of Apatinib in cancer treatment: Possible mechanisms and clinical relevance. Life Sci 2020; 241:117106. [DOI: 10.1016/j.lfs.2019.117106] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 11/15/2019] [Accepted: 11/25/2019] [Indexed: 02/07/2023]
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Wang Z, Liang Y, Zhang D, Wu X, Yu J, Zhang Z, Li Y, Sun C, Tang Z, Liu L. Protective Effects of Polysaccharide Extracted from Portulacae oleracea L. on Colitis Induced by Dextran Sulfate Sodium. J Med Food 2019; 23:125-131. [PMID: 31770044 DOI: 10.1089/jmf.2019.4414] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Polysaccharide from Ma-chi-xian (Portulacae oleracea L., POLP) was prepared and the therapeutic effect on dextran sodium sulfate-induced colitis mice was investigated in this study. The results of clinical activity score and H&E staining confirmed the therapeutic effect of POLP. POLP could diminished the symptoms of colitis and improve colon histopathological structure of the colitis mice. The expression levels of four cytokines were determined. The concentrations of PGE2 and IL-6 were downregulated by POLP treatment. The COX-2 protein expression levels and the STAT3 phosphorylation levels were detected. The results showed that these two protein levels were all increased in colitis and decreased after POLP treatment, indicating that these two proteins were closely related with the protective effect of POLP. Because the synthesis of PGE2 is catalyzed by COX-2 and phosphorylation of STAT3 can induce the expression of COX-2, it was concluded that STAT3 was a key protein related to the POLP exerting its activity in colitis.
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Affiliation(s)
- Zheng Wang
- Shaanxi Collaborative Innovation Center of Chinese Medicine Resources Industrialization, Shaanxi University of Chinese Medicine, Xian Yang, China
| | - Yanni Liang
- Shaanxi Collaborative Innovation Center of Chinese Medicine Resources Industrialization, Shaanxi University of Chinese Medicine, Xian Yang, China
| | - Dongbo Zhang
- Shaanxi Collaborative Innovation Center of Chinese Medicine Resources Industrialization, Shaanxi University of Chinese Medicine, Xian Yang, China
| | - Xue Wu
- Shaanxi Collaborative Innovation Center of Chinese Medicine Resources Industrialization, Shaanxi University of Chinese Medicine, Xian Yang, China
| | - Jingao Yu
- Shaanxi Collaborative Innovation Center of Chinese Medicine Resources Industrialization, Shaanxi University of Chinese Medicine, Xian Yang, China
| | - Zhen Zhang
- Shaanxi Collaborative Innovation Center of Chinese Medicine Resources Industrialization, Shaanxi University of Chinese Medicine, Xian Yang, China
| | - Yi Li
- Shaanxi Collaborative Innovation Center of Chinese Medicine Resources Industrialization, Shaanxi University of Chinese Medicine, Xian Yang, China
| | - Chen Sun
- Shaanxi Collaborative Innovation Center of Chinese Medicine Resources Industrialization, Shaanxi University of Chinese Medicine, Xian Yang, China
| | - Zhishu Tang
- Shaanxi Collaborative Innovation Center of Chinese Medicine Resources Industrialization, Shaanxi University of Chinese Medicine, Xian Yang, China
| | - Li Liu
- Shaanxi Collaborative Innovation Center of Chinese Medicine Resources Industrialization, Shaanxi University of Chinese Medicine, Xian Yang, China
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Natural Sesquiterpene Lactones Enhance Chemosensitivity of Tumor Cells through Redox Regulation of STAT3 Signaling. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:4568964. [PMID: 31781335 PMCID: PMC6855087 DOI: 10.1155/2019/4568964] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Revised: 08/07/2019] [Accepted: 09/05/2019] [Indexed: 12/18/2022]
Abstract
STAT3 is a nuclear transcription factor that regulates genes involved in cell cycle, cell survival, and immune response. Although STAT3 activation drives cells to physiological response, its deregulation is often associated with the development and progression of many solid and hematological tumors as well as with drug resistance. STAT3 is a redox-sensitive protein, and its activation state is related to intracellular GSH levels. Under oxidative conditions, STAT3 activity is regulated by S-glutathionylation, a reversible posttranslational modification of cysteine residues. Compounds able to suppress STAT3 activation and, on the other hand, to modulate intracellular redox homeostasis may potentially improve cancer treatment outcome. Nowadays, about 35% of commercial drugs are natural compounds that derive from plant extracts used in phytotherapy and traditional medicine. Sesquiterpene lactones are an interesting chemical group of plant-derived compounds often employed in traditional medicine against inflammation and cancer. This review focuses on sesquiterpene lactones able to downmodulate STAT3 signaling leading to an antitumor effect and correlates the anti-STAT3 activity with their ability to decrease GSH levels in cancer cells. These properties make them lead compounds for the development of a new therapeutic strategy for cancer treatment.
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Yang R, Wang L, Sheng J, Huang Q, Pan D, Xu Y, Yan J, Wang X, Dong Z, Yang M. Combinatory effects of vaccinia virus VG9 and the STAT3 inhibitor Stattic on cancer therapy. Arch Virol 2019; 164:1805-1814. [PMID: 31087190 DOI: 10.1007/s00705-019-04257-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Accepted: 03/22/2019] [Indexed: 01/08/2023]
Abstract
The recombinant vaccinia virus VG9 and the STAT3 inhibitor Stattic were combined to kill cancer cells via both oncolytic activity and inhibition of STAT3 phosphorylation in cells. The combinatory anti-tumour activity of these compounds was superior to the activity of VG9 or Stattic alone in vivo. The inhibition of tumour growth occurred via increased apoptosis and autophagy pathways. Furthermore, the combinatory anti-tumour activity was more efficient than that of VG9 or Stattic alone on xenografts, especially in nude mice.
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Affiliation(s)
- Runlin Yang
- Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, No. 20, Qianrong Road, Wuxi, 214063, China.
| | - Lizhen Wang
- Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, No. 20, Qianrong Road, Wuxi, 214063, China
| | - Jie Sheng
- The First School of Clinical Medicine, Nanjing Medical University, Nanjing, 210029, China
| | - Qianhuan Huang
- The First School of Clinical Medicine, Nanjing Medical University, Nanjing, 210029, China
| | - Donghui Pan
- Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, No. 20, Qianrong Road, Wuxi, 214063, China
| | - Yuping Xu
- Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, No. 20, Qianrong Road, Wuxi, 214063, China
| | - Junjie Yan
- Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, No. 20, Qianrong Road, Wuxi, 214063, China
| | - Xinyu Wang
- Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, No. 20, Qianrong Road, Wuxi, 214063, China
| | - Ziyue Dong
- Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, No. 20, Qianrong Road, Wuxi, 214063, China
| | - Min Yang
- Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, No. 20, Qianrong Road, Wuxi, 214063, China. .,The First School of Clinical Medicine, Nanjing Medical University, Nanjing, 210029, China. .,School of Pharmaceutical Science, Zhengzhou University, Zhengzhou, 450000, China.
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Lee EJ, Kim SJ, Hahn YI, Yoon HJ, Han B, Kim K, Lee S, Kim KP, Suh YG, Na HK, Surh YJ. 15-Keto prostaglandin E 2 suppresses STAT3 signaling and inhibits breast cancer cell growth and progression. Redox Biol 2019; 23:101175. [PMID: 31129031 PMCID: PMC6859578 DOI: 10.1016/j.redox.2019.101175] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2018] [Revised: 03/19/2019] [Accepted: 03/20/2019] [Indexed: 12/20/2022] Open
Abstract
Overproduction of prostaglandin E2 (PGE2) has been linked to enhanced tumor cell proliferation, invasiveness and metastasis as well as resistance to apoptosis. 15-Keto prostaglandin E2 (15-keto PGE2), a product formed from 15-hydroxyprostaglandin dehydrogenase-catalyzed oxidation of PGE2, has recently been shown to have anti-inflammatory and anticarcinogenic activities. In this study, we observed that 15-keto PGE2 suppressed the phosphorylation, dimerization and nuclear translocation of signal transducer and activator of transcription 3 (STAT3) in human mammary epithelial cells transfected with H-ras (MCF10A-ras). 15-Keto PGE2 inhibited the migration and clonogenicity of MCF10A-ras cells. In addition, subcutaneous injection of 15-keto PGE2 attenuated xenograft tumor growth and phosphorylation of STAT3 induced by breast cancer MDA-MB-231 cells. However, a non-electrophilic analogue, 13,14-dihydro-15-keto PGE2 failed to inhibit STAT3 signaling and was unable to suppress the growth and transformation of MCF10A-ras cells. These findings suggest that the α,β-unsaturated carbonyl moiety of 15-keto PGE2 is essential for its suppression of STAT3 signaling. We observed that the thiol reducing agent, dithiothreitol abrogated 15-keto PGE2-induced STAT3 inactivation and disrupted the direct interaction between 15-keto PGE2 and STAT3. Furthermore, a molecular docking analysis suggested that Cys251 and Cys259 residues of STAT3 could be preferential binding sites for this lipid mediator. Mass spectral analysis revealed the covalent modification of recombinant STAT3 by 15-keto PGE2 at Cys259. Taken together, thiol modification of STAT3 by 15-keto PGE2 inactivates STAT3 which may account for its suppression of breast cancer cell proliferation and progression.
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Affiliation(s)
- Eun Ji Lee
- Department of Molecular Medicine and Biopharmaceutical Science, Seoul National University, Seoul 08826, South Korea; Tumor Microenvironment Global Core Research Center, College of Pharmacy, Seoul National University, Seoul 08826, South Korea
| | - Su-Jung Kim
- Tumor Microenvironment Global Core Research Center, College of Pharmacy, Seoul National University, Seoul 08826, South Korea
| | - Young-Il Hahn
- Department of Molecular Medicine and Biopharmaceutical Science, Seoul National University, Seoul 08826, South Korea; Tumor Microenvironment Global Core Research Center, College of Pharmacy, Seoul National University, Seoul 08826, South Korea
| | - Hyo-Jin Yoon
- Tumor Microenvironment Global Core Research Center, College of Pharmacy, Seoul National University, Seoul 08826, South Korea
| | - Bitnara Han
- Department of Applied Chemistry, Institute of Natural Science, Global Center for Pharmaceutical Ingredient Materials, Kyung Hee University, Yongin 17104, South Korea
| | - Kyeojin Kim
- College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Seungbeom Lee
- College of Pharmacy, CHA University, Gyeonggi-do 11160, South Korea
| | - Kwang Pyo Kim
- Department of Applied Chemistry, Institute of Natural Science, Global Center for Pharmaceutical Ingredient Materials, Kyung Hee University, Yongin 17104, South Korea; Department of Biomedical Science and Technology, Kyung Hee Medical Science Research Institute, Kyung Hee University, Seoul 02453, South Korea
| | - Young Ger Suh
- College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea; College of Pharmacy, CHA University, Gyeonggi-do 11160, South Korea
| | - Hye-Kyung Na
- Department of Food Science and Biotechnology, Sungshin Women's University, College of Knowledge-Based Services Engineering, Seoul 01133, South Korea.
| | - Young-Joon Surh
- Department of Molecular Medicine and Biopharmaceutical Science, Seoul National University, Seoul 08826, South Korea; Tumor Microenvironment Global Core Research Center, College of Pharmacy, Seoul National University, Seoul 08826, South Korea; Cancer Research Institute, Seoul National University, Seoul 03080, South Korea.
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Simon N, Antignani A, Hewitt SM, Gadina M, Alewine C, FitzGerald D. Tofacitinib enhances delivery of antibody-based therapeutics to tumor cells through modulation of inflammatory cells. JCI Insight 2019; 4:123281. [PMID: 30720466 DOI: 10.1172/jci.insight.123281] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Accepted: 01/29/2019] [Indexed: 12/14/2022] Open
Abstract
The routes by which antibody-based therapeutics reach malignant cells are poorly defined. Tofacitinib, an FDA-approved JAK inhibitor, reduced tumor-associated inflammatory cells and allowed increased delivery of antibody-based agents to malignant cells. Alone, tofacitinib exhibited no antitumor activity, but combinations with immunotoxins or an antibody-drug conjugate resulted in increased antitumor responses. Quantification using flow cytometry revealed that antibody-based agents accumulated in malignant cells at higher percentages following tofacitinib treatment. Profiling of tofacitinib-treated tumor-bearing mice indicated that cytokine transcripts and various proteins involved in chemotaxis were reduced compared with vehicle-treated mice. Histological analysis revealed significant changes to the composition of the tumor microenvironment, with reductions in monocytes, macrophages, and neutrophils. Tumor-associated inflammatory cells contributed to non-target uptake of antibody-based therapeutics, with mice treated with tofacitinib showing decreased accumulation of therapeutics in intratumoral inflammatory cells and increased delivery to malignant cells. The present findings serve as a rationale for conducting trials where short-term treatments with tofacitinib could be administered in combination with antibody-based therapies.
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Affiliation(s)
- Nathan Simon
- Center for Cancer Research, National Cancer Institute, NIH, Bethesda, Maryland, USA
| | - Antonella Antignani
- Center for Cancer Research, National Cancer Institute, NIH, Bethesda, Maryland, USA
| | - Stephen M Hewitt
- Center for Cancer Research, National Cancer Institute, NIH, Bethesda, Maryland, USA
| | - Massimo Gadina
- National Institute of Arthritis and Musculoskeletal and Skin Diseases, NIH, Bethesda, Maryland, USA
| | - Christine Alewine
- Center for Cancer Research, National Cancer Institute, NIH, Bethesda, Maryland, USA
| | - David FitzGerald
- Center for Cancer Research, National Cancer Institute, NIH, Bethesda, Maryland, USA
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Razak S, Afsar T, Almajwal A, Alam I, Jahan S. Growth inhibition and apoptosis in colorectal cancer cells induced by Vitamin D-Nanoemulsion (NVD): involvement of Wnt/β-catenin and other signal transduction pathways. Cell Biosci 2019; 9:15. [PMID: 30733856 PMCID: PMC6359839 DOI: 10.1186/s13578-019-0277-z] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2018] [Accepted: 01/23/2019] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND More than the two decades, the question of whether vitamin D has a role in cancer frequency, development, and death has been premeditated in detail. Colorectal, breast, and prostate cancers have been a scrupulous spot of center, altogether, these three malignancies report for approximately 35% of cancer cases and 20% of cancer demises in the United States, and as such are a chief public health apprehension. The aim was to evaluate antitumor activity of Vitamin D-Nanoemulsion (NVD) in colorectal cancer cell lines and HCT116 xenograft model in a comprehensive approach. METHODS Two human colorectal cancer cell lines HCT116 and HT29 (gained from College of Pharmacy, King Saud University, KSA were grown. 3-(4, 5-dimethylthiazol-2-yl)-2, 5-diphenyl tetrazoliumbromide protocol were performed to show the impact of NVD and β-catenin inhibitor (FH535) on the viability of HCT116 and HT29 cell lines. Apoptosis/cell cycle assay was performed. Analysis was done with a FACScan (Becton-Dickinson, NJ). About 10,000 cells per sample were harvested and Histograms of DNA were analyzed with ModiFitLT software (verity Software House, ME, USA). Western blotting and RT-PCR were performed for protein and gene expression respectively in in vitro and in vivo. RESULTS We found that NVD induced cytotoxicity in colorectal cells in a dose-dependent manner and time dependent approach. Further, our data validated that NVD administration of human colorectal cancer HCT116 and HT29 cells resulted in cell growth arrest, alteration in molecules regulating cell cycle operative in the G2 phase of the cell cycle and apoptosis in a dose dependent approach. Further our results concluded that NVD administration decreases expression of β-catenin gene, AKT gene and Survivin gene and protein expression in in vitro and in vivo. CONCLUSION Our findings suggest that targeting β-catenin gene may encourage the alterations of cell cycle and cell cycle regulators. Wnt/β-catenin signaling pathway possibly takes part in the genesis and progression of colorectal cancer cells through regulating cell cycle and the expression of cell cycle regulators.
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Affiliation(s)
- Suhail Razak
- Department of Animal Sciences, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
- Department of Community Health Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Kingdom of Saudi Arabia
| | - Tayyaba Afsar
- Department of Community Health Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Kingdom of Saudi Arabia
| | - Ali Almajwal
- Department of Community Health Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Kingdom of Saudi Arabia
| | - Iftikhar Alam
- Department of Community Health Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Kingdom of Saudi Arabia
| | - Sarwat Jahan
- Department of Animal Sciences, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
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Ding J, Cheng XY, Liu S, Ji HY, Lin M, Ma R, Meng FL. Apatinib exerts anti-tumour effects on ovarian cancer cells. Gynecol Oncol 2019; 153:165-174. [PMID: 30651189 DOI: 10.1016/j.ygyno.2019.01.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Revised: 01/02/2019] [Accepted: 01/08/2019] [Indexed: 12/31/2022]
Abstract
OBJECTIVE Apatinib, a small molecule inhibitor of VEGFR-2 tyrosine kinase, shows strong anti-tumour activity against various tumours. The function of apatinib in ovarian cancer, however, remains unclear. This study was conducted to investigate the effects and potential mechanisms by which apatinib modulates the biological function of ovarian cancer cells in vitro and in vivo. METHODS The effects of apatinib on ovarian cancer cells were determined by assessing cell viability, migration and invasion. The cell cycle distribution and apoptosis of ovarian cancer cells were analysed using flow cytometry. Western blotting was performed to determine the levels of signalling pathway markers. A mouse xenograft model was used to evaluate the efficacy of apatinib in preventing tumour growth. RESULTS Apatinib did not appreciably affect ovarian cancer cell proliferation and vitality, but did inhibit ovarian cancer cell migration. Apatinib suppressed the epithelial-mesenchymal transition in ovarian cancer cells by inhibiting the JAK/STAT3, PI3K/AKT and Notch signalling pathways. Apatinib effectively inhibited tumour growth in vivo. CONCLUSION Based on our findings, apatinib is a highly potent, orally active anti-angiogenic and anti-ovarian cancer agent.
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Affiliation(s)
- Jing Ding
- Department of Gynecology, Harbin Medical University Cancer Hospital, No. 150 Haping Road, Nangang District, Harbin 150040, Heilongjiang Province, China
| | - Xiao-Yan Cheng
- Beijing Center for Physical and Chemical Analysis, No. 7 Fengxianzhong Road, Haidian District, Beijing 100094, China
| | - Shuang Liu
- Department of Gynecology, Harbin Medical University Cancer Hospital, No. 150 Haping Road, Nangang District, Harbin 150040, Heilongjiang Province, China
| | - Hong-Ying Ji
- Department of Gynecology, Harbin Medical University Cancer Hospital, No. 150 Haping Road, Nangang District, Harbin 150040, Heilongjiang Province, China
| | - Mu Lin
- Department of Gynecology, Harbin Medical University Cancer Hospital, No. 150 Haping Road, Nangang District, Harbin 150040, Heilongjiang Province, China
| | - Rong Ma
- Department of Gynecology, Harbin Medical University Cancer Hospital, No. 150 Haping Road, Nangang District, Harbin 150040, Heilongjiang Province, China.
| | - Fan-Ling Meng
- Department of Gynecology, Harbin Medical University Cancer Hospital, No. 150 Haping Road, Nangang District, Harbin 150040, Heilongjiang Province, China.
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Chong SJF, Lai JXH, Eu JQ, Bellot GL, Pervaiz S. Reactive Oxygen Species and Oncoprotein Signaling-A Dangerous Liaison. Antioxid Redox Signal 2018; 29:1553-1588. [PMID: 29186971 DOI: 10.1089/ars.2017.7441] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
SIGNIFICANCE There is evidence to implicate reactive oxygen species (ROS) in tumorigenesis and its progression. This has been associated with the interplay between ROS and oncoproteins, resulting in enhanced cellular proliferation and survival. Recent Advances: To date, studies have investigated specific contributions of the crosstalk between ROS and signaling networks in cancer initiation and progression. These investigations have challenged the established dogma of ROS as agents of cell death by demonstrating a secondary function that fuels cell proliferation and survival. Studies have thus identified (onco)proteins (Bcl-2, STAT3/5, RAS, Rac1, and Myc) in manipulating ROS level as well as exploiting an altered redox environment to create a milieu conducive for cancer formation and progression. CRITICAL ISSUES Despite these advances, drug resistance and its association with an altered redox metabolism continue to pose a challenge at the mechanistic and clinical levels. Therefore, identifying specific signatures, altered protein expressions, and modifications as well as protein-protein interplay/function could not only enhance our understanding of the redox networks during cancer initiation and progression but will also provide novel targets for designing specific therapeutic strategies. FUTURE DIRECTIONS Not only a heightened realization is required to unravel various gene/protein networks associated with cancer formation and progression, particularly from the redox standpoint, but there is also a need for developing more sensitive tools for assessing cancer redox metabolism in clinical settings. This review attempts to summarize our current knowledge of the crosstalk between oncoproteins and ROS in promoting cancer cell survival and proliferation and treatment strategies employed against these oncoproteins. Antioxid. Redox Signal.
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Affiliation(s)
- Stephen Jun Fei Chong
- 1 Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore , Singapore, Singapore
| | - Jolin Xiao Hui Lai
- 1 Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore , Singapore, Singapore
| | - Jie Qing Eu
- 2 Cancer Science Institute , Singapore, Singapore
| | - Gregory Lucien Bellot
- 1 Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore , Singapore, Singapore .,3 Department of Hand and Reconstructive Microsurgery, National University Health System , Singapore, Singapore
| | - Shazib Pervaiz
- 1 Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore , Singapore, Singapore .,4 NUS Graduate School for Integrative Sciences and Engineering, National University of Singapore , Singapore, Singapore .,5 National University Cancer Institute, National University Health System , Singapore, Singapore .,6 School of Biomedical Sciences, Curtin University , Perth, Australia
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Subcutaneously administered adrenomedullin exerts a potent therapeutic effect in a murine model of ulcerative colitis. Hum Cell 2018; 32:12-21. [PMID: 30306504 DOI: 10.1007/s13577-018-0219-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Accepted: 09/30/2018] [Indexed: 01/01/2023]
Abstract
Adrenomedullin (AM) exerts a potent anti-inflammatory effect. Intrarectal or consecutive intravenous administrations of AM reduce pathological manifestations in rodent colitis models. However, in clinical applications, a safer administration route that provides stronger alleviation of patient burden is preferred. We investigated whether subcutaneously administered AM is effective against dextran sulfate sodium (DSS)-induced colitis. C57BL/6J mice were administered 1% DSS in drinking water and received AM at 8, 40 or 80 nmol/kg subcutaneously once a day for 7 consecutive days. Subcutaneously administered AM significantly and dose-dependently ameliorated body weight loss, diarrhea, and histological severity of colonic inflammation in DSS-treated mice. The AM therapeutic effect was associated with the upregulation of the production of autocrine AM, and expression of cAMP, c-fos, KLF4, and downregulation of STAT3 and NF-κB p65 phosphorylation, as well as a decrease in proinflammatory cytokine expression in the colon. Subcutaneous AM treatment potently attenuated DSS-induced colitis, which suggests that AM administered subcutaneously in ulcerative colitis (UC) patients may decrease diseases burden and improve quality of life.
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STAT3 in Breast Cancer Onset and Progression: A Matter of Time and Context. Int J Mol Sci 2018; 19:ijms19092818. [PMID: 30231553 PMCID: PMC6163512 DOI: 10.3390/ijms19092818] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Revised: 09/13/2018] [Accepted: 09/16/2018] [Indexed: 01/05/2023] Open
Abstract
Signal transducer and activator of transcription 3 (STAT3) is responsible for mediating the transcriptional programs downstream of several cytokine, growth factor, and oncogenic stimuli. Its expression and activity are consistently linked to cellular transformation, as well as tumor initiation and progression. Due to this central role, STAT3 is widely considered a good target for anti-cancer therapy; however, the success of these approaches has been, so far, very limited. Notably, on one side, STAT3 is aberrantly active in many breast cancers, on the other, at the physiological level, it is the main mediator of epithelial cell death during post-lactation mammary-gland involution, thus strongly suggesting that its biological functions are highly context-specific. One of the most peculiar features of STAT3 is that it can act both in cell-autonomous and non-cell-autonomous manners, simultaneously modulating the phenotypes of the tumor cells and their microenvironment. Here, we focus on the role of STAT3 in breast cancer progression, discussing the potential contrasting roles of STAT3 activation in the establishment of locally recurrent and distant metastatic disease. Based on the most recent literature, depending on the tumor cell type, the local microenvironment status, and the stage of the disease, either STAT3 activation or inactivation can support disease progression. Accordingly, cancer cells dynamically exploit STAT3 activity to carry out transcriptional programs somehow contrasting and complementary, such as supporting survival and growth, dormancy and awakening, stem cell-like features, and inflammation, immune response, and immune evasion. As a consequence, to achieve clinical efficacy, the conception and testing of anti-STAT3 targeted therapies will need a very careful evaluation of these opposing roles and of the most appropriate tumor context, disease stage and patient population to treat.
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Structure activity relationships of anthranilic acid-based compounds on cellular and in vivo mitogen activated protein kinase-5 signaling pathways. Bioorg Med Chem Lett 2018; 28:2294-2301. [DOI: 10.1016/j.bmcl.2018.05.029] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Revised: 05/11/2018] [Accepted: 05/12/2018] [Indexed: 11/15/2022]
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Matson BC, Quinn KE, Lessey BA, Young SL, Caron KM. Elevated levels of adrenomedullin in eutopic endometrium and plasma from women with endometriosis. Fertil Steril 2018; 109:1072-1078. [PMID: 29871794 DOI: 10.1016/j.fertnstert.2018.02.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Revised: 01/22/2018] [Accepted: 02/02/2018] [Indexed: 02/07/2023]
Abstract
OBJECTIVE To test adrenomedullin (Adm, ADM) as a downstream target of signal transducer and activator of transcription 3 (STAT3) in endometrial cells and to test midregional proadrenomedullin (MR-proADM) as a biomarker of endometriosis. DESIGN Cross-sectional analysis of Adm expression in eutopic endometrium and of MR-proADM in plasma from women with and without endometriosis; and prospective study of MR-proADM levels in women with endometriosis undergoing surgical resection of ectopic lesions. SETTING Academic medical centers. PATIENT(S) Fifteen patients with endometriosis and 11 healthy control subjects who donated eutopic endometrial biopsies; and 28 patients with endometriosis and 19 healthy control subjects who donated plasma for MR-proADM analysis. INTERVENTION(S) None. MAIN OUTCOME MEASURE(S) Adm mRNA levels according to quantitative real-time polymerase chain reaction after activation of STAT3 by interleukin-6 (IL-6) in Ishikawa cells; immunohistochemistry for ADM in eutopic endometrial biopsies from women with endometriosis compared with healthy donors; and MR-proADM levels measured by commercial immunoassay in plasma from healthy women and women with endometriosis who subsequently underwent surgical resection of ectopic lesions. RESULT(S) Activation of STAT3 by IL-6 up-regulated Adm mRNA expression in Ishikawa cells. ADM protein levels were elevated in the eutopic endometrium of women with endometriosis. MR-proADM concentrations were higher in women with endometriosis but were not correlated with disease stage, corrected by surgery, or predictive of fertility outcome. CONCLUSION(S) MR-proADM may be able to serve as a biomarker of endometriosis, but it is unknown whether elevated MR-proADM levels are secondary to the estrogenic and inflammatory properties of endometriosis or an inciting pathogenic factor.
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Affiliation(s)
- Brooke C Matson
- Department of Cell Biology and Physiology, University of North Carolina, Chapel Hill, North Carolina
| | - Kelsey E Quinn
- Department of Cell Biology and Physiology, University of North Carolina, Chapel Hill, North Carolina
| | - Bruce A Lessey
- Obstetrics and Gynecology, Greenville Health System, Greenville, South Carolina
| | - Steven L Young
- Department of Cell Biology and Physiology, University of North Carolina, Chapel Hill, North Carolina; Department of Obstetrics and Gynecology, University of North Carolina, Chapel Hill, North Carolina
| | - Kathleen M Caron
- Department of Cell Biology and Physiology, University of North Carolina, Chapel Hill, North Carolina.
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Abstract
Signal transducer and activator of transcription (STAT) 3 is a key signalling protein engaged by a multitude of growth factors and cytokines to elicit diverse biological outcomes including cellular growth, differentiation, and survival. The complete loss of STAT3 is not compatible with life and even partial loss of function mutations lead to debilitating pathologies like hyper IgE syndrome. Conversely, augmented STAT3 activity has been reported in as many as 50% of all human tumours. The dogma of STAT3 activity posits that it is a tyrosine phosphorylated transcription factor which modulates the expression of hundreds of genes. However, the regulation and biological consequences of STAT3 activation are far more complex. In addition to tyrosine phosphorylation, STAT3 is decorated with a plethora of post-translational modifications which regulate STAT3's nuclear function in addition to its non-genomic activities. In addition to these emerging complexities in the biochemical regulation of STAT3 activity, recent studies reveal that STAT3 is either oncogenic or a tumour suppressor. This review will explore these complexities.
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Affiliation(s)
- Aleks C Guanizo
- a Centre for Cancer Research , Hudson Institute of Medical Research , Clayton , VIC , Australia
- b Department of Molecular and Translational Science , Monash University , Clayton , VIC , Australia
| | - Chamira Dilanka Fernando
- a Centre for Cancer Research , Hudson Institute of Medical Research , Clayton , VIC , Australia
- b Department of Molecular and Translational Science , Monash University , Clayton , VIC , Australia
| | - Daniel J Garama
- a Centre for Cancer Research , Hudson Institute of Medical Research , Clayton , VIC , Australia
- b Department of Molecular and Translational Science , Monash University , Clayton , VIC , Australia
| | - Daniel J Gough
- a Centre for Cancer Research , Hudson Institute of Medical Research , Clayton , VIC , Australia
- b Department of Molecular and Translational Science , Monash University , Clayton , VIC , Australia
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37
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Ogunbolude Y, Dai C, Bagu ET, Goel RK, Miah S, MacAusland-Berg J, Ng CY, Chibbar R, Napper S, Raptis L, Vizeacoumar F, Vizeacoumar F, Bonham K, Lukong KE. FRK inhibits breast cancer cell migration and invasion by suppressing epithelial-mesenchymal transition. Oncotarget 2017; 8:113034-113065. [PMID: 29348886 PMCID: PMC5762571 DOI: 10.18632/oncotarget.22958] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Accepted: 11/16/2017] [Indexed: 12/31/2022] Open
Abstract
The human fyn-related kinase (FRK) is a non-receptor tyrosine kinase known to have tumor suppressor activity in breast cancer cells. However, its mechanism of action has not been fully characterized. We generated FRK-stable MDA-MB-231 breast cancer cell lines and analyzed the effect on cell proliferation, migration, and invasiveness. We also used kinome analysis to identify potential FRK-regulated signaling pathways. We employed both immunoblotting and RT-PCR to identify/validate FRK-regulated targets (proteins and genes) in these cells. Finally, we interrogated the TCGA and GENT gene expression databases to determine the correlation between the expression of FRK and epithelial/mesenchymal markers. We observed that FRK overexpression suppressed cell proliferation, migration, and invasiveness, inhibited various JAK/STAT, MAPK and Akt signaling pathways, and suppressed the expression of some STAT3 target genes. Also, FRK overexpression increased the expression of epithelial markers including E-cadherin mRNA and down-regulated the transcript levels of vimentin, fibronectin, and slug. Finally, we observed an inverse correlation between FRK expression and mesenchymal markers in a large cohort of breast cancer cells. Our data, therefore, suggests that FRK represses cell proliferation, migration and invasiveness by suppressing epithelial to mesenchymal transition.
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Affiliation(s)
- Yetunde Ogunbolude
- Department of Biochemistry, College of Medicine, University of Saskatchewan, Saskatoon, Canada
| | - Chenlu Dai
- Department of Biochemistry, College of Medicine, University of Saskatchewan, Saskatoon, Canada
| | - Edward T Bagu
- Department of Biochemistry, College of Medicine, University of Saskatchewan, Saskatoon, Canada.,Cancer Research Unit, Health Research Division, Saskatchewan Cancer Agency, and Division of Oncology, College of Medicine, University of Saskatchewan, Saskatoon, Canada
| | - Raghuveera Kumar Goel
- Department of Biochemistry, College of Medicine, University of Saskatchewan, Saskatoon, Canada
| | - Sayem Miah
- Department of Biochemistry, College of Medicine, University of Saskatchewan, Saskatoon, Canada.,Departments of Pathology & Laboratory Medicine, University of Kansas Medical Center, Kansas City, MO, USA
| | - Joshua MacAusland-Berg
- Department of Biochemistry, College of Medicine, University of Saskatchewan, Saskatoon, Canada
| | - Chi Ying Ng
- Department of Biochemistry, College of Medicine, University of Saskatchewan, Saskatoon, Canada
| | - Rajni Chibbar
- Department of Pathology Royal University Hospital Saskatchewan, Saskatoon, Canada
| | - Scott Napper
- Department of Biochemistry, College of Medicine, University of Saskatchewan, Saskatoon, Canada.,Vaccine and Infectious Disease Organization, University of Saskatchewan, Saskatoon, Canada
| | - Leda Raptis
- Departments of Microbiology and Immunology and Pathology, Queen's University, Kingston, Canada
| | - Frederick Vizeacoumar
- Cancer Research Unit, Health Research Division, Saskatchewan Cancer Agency, and Division of Oncology, College of Medicine, University of Saskatchewan, Saskatoon, Canada
| | - Franco Vizeacoumar
- Cancer Research Unit, Health Research Division, Saskatchewan Cancer Agency, and Division of Oncology, College of Medicine, University of Saskatchewan, Saskatoon, Canada
| | - Keith Bonham
- Department of Biochemistry, College of Medicine, University of Saskatchewan, Saskatoon, Canada.,Cancer Research Unit, Health Research Division, Saskatchewan Cancer Agency, and Division of Oncology, College of Medicine, University of Saskatchewan, Saskatoon, Canada
| | - Kiven Erique Lukong
- Department of Biochemistry, College of Medicine, University of Saskatchewan, Saskatoon, Canada
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38
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EZH2 promotes neoplastic transformation through VAV interaction-dependent extranuclear mechanisms. Oncogene 2017; 37:461-477. [PMID: 28967906 DOI: 10.1038/onc.2017.309] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Revised: 07/10/2017] [Accepted: 07/11/2017] [Indexed: 11/08/2022]
Abstract
Recently, we reported that the histone methyltransferase, EZH2, controls leukocyte migration through interaction with the cytoskeleton remodeling effector, VAV, and direct methylation of the cytoskeletal regulatory protein, Talin. However, it is unclear whether this extranuclear, epigenetic-independent function of EZH2 has a profound impact on the initiation of cellular transformation and metastasis. Here, we show that EZH2 increases Talin1 methylation and cleavage, thereby enhancing adhesion turnover and promoting accelerated tumorigenesis. This transforming capacity is abolished by targeted disruption of EZH2 interaction with VAV. Furthermore, our studies demonstrate that EZH2 in the cytoplasm is closely associated with cancer stem cell properties, and that overexpression of EZH2, a mutant EZH2 lacking its nuclear localization signal (EZH2ΔNLS), or a methyl-mimicking Talin1 mutant substantially promotes JAK2-dependent STAT3 activation and cellular transformation. Taken together, our results suggest a critical role for the VAV interaction-dependent, extranuclear action of EZH2 in neoplastic transformation.
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39
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Jia ZY, Shen TY, Jiang W, Qin HL. Identification of molecular mechanisms of glutamine in pancreatic cancer. Oncol Lett 2017; 14:6395-6402. [PMID: 29163679 PMCID: PMC5688798 DOI: 10.3892/ol.2017.7068] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2015] [Accepted: 03/21/2017] [Indexed: 11/21/2022] Open
Abstract
The aim of the present study was to explore the critical genes and molecular mechanisms in pancreatic cancer (PC) cells with glutamine. By analyzing microarray data GSE17632 from the Gene Expression Omnibus database, the DEGs between PC cells treated with glutamine and without glutamine were evaluated. Additionally, function enrichment analyses and protein-protein interaction (PPI) network construction of DEGs were performed. Network module and literature mining analyses were performed to analyze the critical DEGs in PC cells. In total, 495 genes were selected as DEGs between control and glutamine cells in PC. These DEGs were mainly enriched in several Gene Ontology (GO) terms in biological process, cellular components and molecular function. Additionally, they were also enriched in certain pathways, including metabolic pathways and the Janus kinase-signal transducer and activator of transcription (JAK-STAT) signaling pathway. MYC, heat shock 70kDa protein 5 (HSPA5), interleukin 8 (IL8), and chemokine (C-X-C motif) receptor 4 (CXCR4) were hub genes in the PPI network. Furthermore, two sub-network modules of PPI network and two co-occurrence networks were obtained. The DEGs of MYC, HSPA5, IL18 and CXCR4 may exert important roles in molecular mechanisms of PC cells with glutamine.
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Affiliation(s)
- Zhen-Yi Jia
- Department of Gastrointestinal Surgery, Shanghai Tenth People's Hospital Affiliated to Tongji University, Shanghai 200072, P.R. China
| | - Tong-Yi Shen
- Department of Gastrointestinal Surgery, Shanghai Tenth People's Hospital Affiliated to Tongji University, Shanghai 200072, P.R. China
| | - Wei Jiang
- Intensive Care Unit, Shanghai Tenth People's Hospital Affiliated to Tongji University, Shanghai 200072, P.R. China
| | - Huan-Long Qin
- Department of Gastrointestinal Surgery, Shanghai Tenth People's Hospital Affiliated to Tongji University, Shanghai 200072, P.R. China
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40
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Toosendanin demonstrates promising antitumor efficacy in osteosarcoma by targeting STAT3. Oncogene 2017; 36:6627-6639. [PMID: 28783167 PMCID: PMC5702716 DOI: 10.1038/onc.2017.270] [Citation(s) in RCA: 87] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Revised: 06/15/2017] [Accepted: 07/03/2017] [Indexed: 12/13/2022]
Abstract
Signal transducer and activator of transcription 3(STAT3) is an emerging target for cancer therapy. In this study, we identify Toosendanin (TSN) is an effective inhibitor of STAT3, leading to the impediment of various oncogenic processes in osteosarcoma. TSN selectively inactivates phospho-STAT3 (Tyr-705); subsequent molecular docking and in vitro SPR analysis uncover TSN directly binds to the SH2 domain of STAT3. Consequently, TSN blocks STAT3 dimerization and impairs the complex formation of STAT3 and epidermal growth factor receptor (EGFR). In an animal tumor model study, TSN is well tolerated, inhibits osteosarcoma growth and metastasis. In another osteosarcoma patient-derived xenografts (PDX) model, we find TSN triggers strong inhibitory effects on patient-derived tumors. Further studies show that TSN also displays activity against other solid tumors. Our preclinical work therefore supports that TSN acts as a novel inhibitor of STAT3 that blocks tumorigenesis in ostoesarcoma.
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41
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Zhao T, Jia H, Cheng Q, Xiao Y, Li M, Ren W, Li C, Feng Y, Feng Z, Wang H, Zheng J. Nifuroxazide prompts antitumor immune response of TCL-loaded DC in mice with orthotopically-implanted hepatocarcinoma. Oncol Rep 2017; 37:3405-3414. [PMID: 28498414 DOI: 10.3892/or.2017.5629] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Accepted: 04/13/2017] [Indexed: 01/10/2023] Open
Abstract
Hepatocellular carcinoma (HCC) is a highly aggressive malignancy with a poor prognosis and high mortality. At present, vaccination with tumor cell lysate (TCL) loaded dendritic cells (DC) has been shown to be an effective therapy against HCC. However, the ability of promoting the specific T cell immune response is rather weak, influencing the antitumor response. Thus, it is necessary to find a strategy to improve the antitumor effect of TCL-loaded DC. Activation of signal transducer and activator of transcription 3 (STAT3) significantly inhibits antitumor immune response and DC maturity. Nifuroxazide, an antidiarrheal agent, has been proved to directly inhibit STAT3 activation. Thus, we investigated whether nifuroxazide could improve the antitumor immune response in mice vaccinated with TCL-loaded DC. The study provides the theoretical and experimental basis for developing an effective adjuvant for DC vaccine to treat HCC. Our results showed that the administration of nifuroxazide and DC-loaded TCL could significantly improve the survival rate, inhibit the tumor growth, and prompt the antitumor immune responses in mice with orthotopically implanted hepatocarcinomas, thus, possibly providing a new combination strategy to treat HCC.
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Affiliation(s)
- Tiesuo Zhao
- Department of Immunology, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China
| | - Huijie Jia
- Department of Pathology, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China
| | - Qian Cheng
- Jiangsu Key Laboratory of Biological Cancer Therapy, Xuzhou Medical College, Xuzhou, Jiangsu 221002, P.R. China
| | - Yali Xiao
- Department of Immunology, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China
| | - Minming Li
- Department of Immunology, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China
| | - Wenjing Ren
- Department of Dermatology, The First Affiliated Hospital of Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China
| | - Chen Li
- Department of Immunology, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China
| | - Yuchen Feng
- Department of Immunology, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China
| | - Zhiwei Feng
- Department of Immunology, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China
| | - Hui Wang
- Research Center for Immunology, School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China
| | - Junnian Zheng
- Jiangsu Key Laboratory of Biological Cancer Therapy, Xuzhou Medical College, Xuzhou, Jiangsu 221002, P.R. China
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42
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Furtek SL, Matheson CJ, Backos DS, Reigan P. Evaluation of quantitative assays for the identification of direct signal transducer and activator of transcription 3 (STAT3) inhibitors. Oncotarget 2016; 7:77998-78008. [PMID: 27793003 PMCID: PMC5363639 DOI: 10.18632/oncotarget.12868] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Accepted: 10/13/2016] [Indexed: 12/22/2022] Open
Abstract
In many forms of cancer the signal transducer and activator of transcription 3 (STAT3) transcription factor remains constitutively active, driving cancer survival and progression. The critical role of STAT3 in tumorigenesis has prompted a campaign of drug discovery programs to identify small molecules that disrupt the function of STAT3, with more recent efforts focusing on direct STAT3 inhibition. There are two target binding sites for direct STAT3 inhibitors: the SH2 dimerization domain and the DNA-binding domain. An in vitro fluorescence polarization assay, using recombinant STAT3 protein, has successfully identified compounds that target the SH2 domain; however, no assay has been reported to identify inhibitors that bind the DNA-binding domain. The lack of such a quantitative assay has limited the identification and development of STAT3 DNA-binding domain inhibitors. Here, we report a modified DNA-binding ELISA to incorporate recombinant STAT3 protein to evaluate small molecules that prevent STAT3-DNA binding. The concomitant use of the ELISA and fluorescence polarization assay enables the classification of direct STAT3 inhibitors by their site of action. Our data provide further support that niclosamide inhibits STAT3 through interaction with the DNA-binding domain. Furthermore, the ELISA can support medicinal chemistry efforts by identifying DNA-binding domain inhibitors and allowing the determination of an IC50 value, supporting the ranking of inhibitors and development of structure-activity relationships. Therefore, we propose a tandem evaluation approach to identify small molecules that target the SH2 domain or the DNA-binding domain of STAT3, which allows for quantitative evaluation of candidate STAT3 inhibitors.
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Affiliation(s)
- Steffanie L. Furtek
- Department of Pharmaceutical Sciences, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, USA
| | - Christopher J. Matheson
- Department of Pharmaceutical Sciences, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, USA
| | - Donald S. Backos
- Department of Pharmaceutical Sciences, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, USA
| | - Philip Reigan
- Department of Pharmaceutical Sciences, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, USA
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43
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Li JT, Jia LT, Liu NN, Zhu XS, Liu QQ, Wang XL, Yu F, Liu YL, Yang AG, Gao CF. MiRNA-101 inhibits breast cancer growth and metastasis by targeting CX chemokine receptor 7. Oncotarget 2016; 6:30818-30. [PMID: 26360780 PMCID: PMC4741570 DOI: 10.18632/oncotarget.5067] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2015] [Accepted: 08/21/2015] [Indexed: 12/17/2022] Open
Abstract
Whereas miR-101 is involved in the development and progression of breast cancer, the underlying molecular mechanisms remain to be elucidated. Here, we report that miR-101 expression is inversely correlated with the clinical stage, lymph node metastasis and prognosis in breast cancers. Introduction of miR-101 inhibited breast cancer cell proliferation and invasion in vitro and suppressed tumor growth and lung metastasis of in vivo. CX chemokine receptor 7 (CXCR7) is a direct target of miR-101, positively correlating with the histological grade and the incidence of lymph node metastasis in breast cancer patients. The effects of miR-101 were mimicked and counteracted by CXCR7 depletion and overexpression, respectively. STAT3 signaling downstream of CXCR7 is involved in miR-101 regulation of breast cancer cell behaviors. These findings have implications for the potential application of miR-101 in breast cancer treatment.
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Affiliation(s)
- Jun-Tang Li
- Centre of Inflammation and Cancer Research, 150th Central Hospital of PLA, Luoyang, Henan 471031, China.,State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, Shaanxi 710032, China.,State Key Laboratory of Cancer Biology, Department of Biochemistry and Molecular Biology, Fourth Military Medical University, Xi'an, Shaanxi 710032, China
| | - Lin-Tao Jia
- State Key Laboratory of Cancer Biology, Department of Biochemistry and Molecular Biology, Fourth Military Medical University, Xi'an, Shaanxi 710032, China
| | - Ning-Ning Liu
- Centre of Inflammation and Cancer Research, 150th Central Hospital of PLA, Luoyang, Henan 471031, China
| | - Xiao-Shan Zhu
- Centre of Inflammation and Cancer Research, 150th Central Hospital of PLA, Luoyang, Henan 471031, China
| | - Qin-Qin Liu
- Centre of Inflammation and Cancer Research, 150th Central Hospital of PLA, Luoyang, Henan 471031, China
| | - Xiu-Li Wang
- Centre of Inflammation and Cancer Research, 150th Central Hospital of PLA, Luoyang, Henan 471031, China
| | - Feng Yu
- Centre of Inflammation and Cancer Research, 150th Central Hospital of PLA, Luoyang, Henan 471031, China
| | - Yan-Li Liu
- Centre of Inflammation and Cancer Research, 150th Central Hospital of PLA, Luoyang, Henan 471031, China
| | - An-Gang Yang
- State Key Laboratory of Cancer Biology, Department of Immunology, Fourth Military Medical University, Xi'an, Shaanxi 710032, China
| | - Chun-Fang Gao
- Centre of Inflammation and Cancer Research, 150th Central Hospital of PLA, Luoyang, Henan 471031, China
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44
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miR-124 Acts as a Tumor Suppressor in Glioblastoma via the Inhibition of Signal Transducer and Activator of Transcription 3. Mol Neurobiol 2016; 54:2555-2561. [PMID: 26993295 DOI: 10.1007/s12035-016-9852-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2016] [Accepted: 03/09/2016] [Indexed: 12/31/2022]
Abstract
MicroRNAs are important regulators of multiple cellular processes, and aberrant miRNA expression has been observed in human glioblastoma (GBM). The present study was to evaluate the level of miR-124 and signal transducer and activator of transcription 3 (STAT3) in GBM tissues and cells. We further investigated the molecular mechanisms of miR-124 and STAT3 in GBM cell lines U87 and U251. Here, we found that miR-124 expression was downregulated in GBM tissues and U87 and U251 cells (all p < 0.001) but not associated with blood routine (RBC, WBC count, etc.) and liver and renal function indicators (all p > 0.05). By contrast, STAT3 was upregulated. Furthermore, the expression of miR-124 was inversely proportional to that of STAT3 mRNA or protein (p = 0.013, p = 0.015, respectively). In vitro studies demonstrated that the overexpression of miR-124 played a suppressor role in the proliferation of U87 and U251 cells and promoted cell apoptosis. Luciferase reporter assays confirmed that miR-124 binding to the 3'-UTR regions of STAT3 inhibited the expression of STAT3 in U87 and U251 cells. However, the inhibitor of miR-124 promoted the expression of STAT3 and cell proliferation. In conclusion, our data suggest that miR-124 may have a potential role in treatment of GBM patients and that miR-124 is a novel regulator of invasiveness and tumorigenicity in GBM cells by targeting STAT3. The miR-124/STAT3 pathway may be a useful therapeutic agent in GBM patients.
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45
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Yang F, Ye T, Liu Z, Fang A, Luo Y, wei W, Li Y, Li Y, Zeng A, Deng Y, Gou H, Xie Y, Zhang Y, Wei Y. Niclosamide induces colorectal cancer apoptosis, impairs metastasis and reduces immunosuppressive cells in vivo. RSC Adv 2016. [DOI: 10.1039/c6ra21533e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Colorectal cancer (CRC) is one of the most common malignancies with considerable metastatic potential, explaining the need for new candidates that inhibit tumor growth and metastasis.
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46
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Jones LM, Broz ML, Ranger JJ, Ozcelik J, Ahn R, Zuo D, Ursini-Siegel J, Hallett MT, Krummel M, Muller WJ. STAT3 Establishes an Immunosuppressive Microenvironment during the Early Stages of Breast Carcinogenesis to Promote Tumor Growth and Metastasis. Cancer Res 2015; 76:1416-28. [PMID: 26719528 DOI: 10.1158/0008-5472.can-15-2770] [Citation(s) in RCA: 76] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2015] [Accepted: 12/21/2015] [Indexed: 02/07/2023]
Abstract
Immunosurveillance constitutes the first step of cancer immunoediting in which developing malignant lesions are eliminated by antitumorigenic immune cells. However, the mechanisms by which neoplastic cells induce an immunosuppressive state to evade the immune response are still unclear. The transcription factor STAT3 has been implicated in breast carcinogenesis and tumor immunosuppression in advanced disease, but its involvement in early disease development has not been established. Here, we genetically ablated Stat3 in the tumor epithelia of the inducible PyVmT mammary tumor model and found that Stat3-deficient mice recapitulated the three phases of immunoediting: elimination, equilibrium, and escape. Pathologic analyses revealed that Stat3-deficient mice initially formed hyperplastic and early adenoma-like lesions that later completely regressed, thereby preventing the emergence of mammary tumors in the majority of animals. Furthermore, tumor regression was correlated with massive immune infiltration into the Stat3-deficient lesions, leading to their elimination. In a minority of animals, focal, nonmetastatic Stat3-deficient mammary tumors escaped immune surveillance after a long latency or equilibrium period. Taken together, our findings suggest that tumor epithelial expression of Stat3 plays a critical role in promoting an immunosuppressive tumor microenvironment during breast tumor initiation and progression, and prompt further investigation of Stat3-inhibitory strategies that may reactivate the immunosurveillance program.
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Affiliation(s)
- Laura M Jones
- Goodman Cancer Centre, McGill University, Montreal, Quebec, Canada. Departments of Biochemistry, McGill University, Montreal, Quebec, Canada
| | - Miranda L Broz
- Department of Pathology, University of California San Francisco, San Francisco, California
| | - Jill J Ranger
- Goodman Cancer Centre, McGill University, Montreal, Quebec, Canada. Departments of Biochemistry, McGill University, Montreal, Quebec, Canada
| | - John Ozcelik
- Departments of Biochemistry, McGill University, Montreal, Quebec, Canada
| | - Ryuhjin Ahn
- Department of Oncology, McGill University, Montreal, Quebec, Canada. Lady Davis Institute, Jewish General Hospital, McGill University, Montreal, Quebec, Canada
| | - Dongmei Zuo
- Goodman Cancer Centre, McGill University, Montreal, Quebec, Canada. Departments of Biochemistry, McGill University, Montreal, Quebec, Canada
| | - Josie Ursini-Siegel
- Department of Oncology, McGill University, Montreal, Quebec, Canada. Lady Davis Institute, Jewish General Hospital, McGill University, Montreal, Quebec, Canada
| | - Michael T Hallett
- Departments of Biochemistry, McGill University, Montreal, Quebec, Canada
| | - Matthew Krummel
- Department of Pathology, University of California San Francisco, San Francisco, California
| | - William J Muller
- Goodman Cancer Centre, McGill University, Montreal, Quebec, Canada. Departments of Biochemistry, McGill University, Montreal, Quebec, Canada.
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47
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Chang L, Gong F, Cai H, Li Z, Cui Y. Combined RNAi targeting human Stat3 and ADAM9 as gene therapy for non-small cell lung cancer. Oncol Lett 2015; 11:1242-1250. [PMID: 26893726 DOI: 10.3892/ol.2015.4018] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2014] [Accepted: 10/23/2015] [Indexed: 01/28/2023] Open
Abstract
Previous studies have demonstrated that human signal transducer and activator of transcription 3 (Stat3) and disintegrin and metalloproteinase 9 (ADAM9) are promising targets for RNA interference (RNAi)-based gene therapy for human non-small cell lung cancer (NSCLC). Thus, in the present study, the recombinant lentiviral (Lv) small hairpin (sh)RNA expression plasmids Lv/sh-Stat3 and Lv/sh-ADAM9, which targeted Stat3 and ADAM9, respectively, were constructed and subsequently infected into the A549 human NSCLC cell line. Cell proliferation, migration, invasion and apoptosis were determined in vitro in A549 cells following treatment with Lv/sh-Stat3 or Lv/sh-ADAM9 alone or in combination. In addition, the combined effect of Lv/sh-Stat3 and Lv/sh-ADAM9 gene therapy was evaluated in vivo using A549 xenograft models in nude mice. The in vitro experiments demonstrated that A549 cells treated with a combination of Lv/sh-Stat3 and Lv/sh-ADAM9 exhibited a significant additive effect in their cell proliferation, migration, invasion and apoptosis abilities, compared with A549 cells treated with Lv/sh-Stat3 or Lv/sh-ADAM9 alone. The in vivo experiments conducted in A549 xenograft tumor mouse models revealed that the combined treatment with Lv/sh-Stat3 and Lv/sh-ADAM9 exerted an additive effect on tumor growth inhibition, compared with the treatment with Lv/sh-Stat3 or Lv/sh-ADAM9 alone. These results suggested that combined RNAi gene therapy targeting human Stat3 and ADAM9 may be a novel and promising strategy for the treatment of NSCLC.
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Affiliation(s)
- Liang Chang
- Department of Thoracic Surgery, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Fangchao Gong
- Department of Thoracic Surgery, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Hongfei Cai
- Department of Thoracic Surgery, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Zhihong Li
- Department of Thoracic Surgery, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Youbin Cui
- Department of Thoracic Surgery, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
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Lin A, Wang G, Zhao H, Zhang Y, Han Q, Zhang C, Tian Z, Zhang J. TLR4 signaling promotes a COX-2/PGE 2/STAT3 positive feedback loop in hepatocellular carcinoma (HCC) cells. Oncoimmunology 2015; 5:e1074376. [PMID: 27057441 PMCID: PMC4801438 DOI: 10.1080/2162402x.2015.1074376] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Revised: 07/12/2015] [Accepted: 07/15/2015] [Indexed: 12/12/2022] Open
Abstract
Toll-like receptors (TLRs) can be expressed by tumor cells, and each TLR exhibits different biological functions. Evidences showed the activation of some certain TLRs could promote tumor progression. One of which TLR4 has been found to promote hepatocellular carcinoma (HCC) cells proliferation, but the detailed mechanism is still unknown. In the present study, we verified that TLR4 was functionally expressed on HCC cells, and TLR4 agonist lipopolysaccharide (LPS) could stimulate the proliferation and clone formation of HCC cells. Most importantly, we found a COX-2/PGE2/STAT3 positive feedback loop exists in HCC cells, which could be provoked by TLR4 activation. Consistently, the expression of TLR4, COX-2 and p-STAT3Y705 was positively correlated with each other in liver tumor tissues from patients with primary HCC. Further investigation demonstrated this loop played a dominant role in TLR4-induced HCC cell proliferation and multidrug resistance (MDR) to chemotherapy. Inhibition of TLR4 or COX-2/PGE2/STAT3 loop would attenuate LPS-induced inflammation and proliferation of HCC cells, and enhance the sensitivity of HCC cells to chemotherapeutics in vitro. By using a primary HCC model, we observed COX-2/PGE2/STAT3 loop was significantly blocked in TLR4−/− mice compared to wild type mice, and there was no obvious tumorgenesis sign in TLR4−/− mice. Therefore, these findings provided the precise molecular mechanism of TLR4 signaling pathway involved in HCC progress, and suggested that TLR4 may be a promising target for HCC treatment.
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Affiliation(s)
- Ang Lin
- Institute of Immunopharmaceutical Sciences, School of Pharmaceutical Sciences, Shandong University , Jinan, China
| | - Guan Wang
- Institute of Immunopharmaceutical Sciences, School of Pharmaceutical Sciences, Shandong University , Jinan, China
| | - Huajun Zhao
- Institute of Immunopharmaceutical Sciences, School of Pharmaceutical Sciences, Shandong University , Jinan, China
| | - Yuyi Zhang
- Institute of Immunopharmaceutical Sciences, School of Pharmaceutical Sciences, Shandong University , Jinan, China
| | - Qiuju Han
- Institute of Immunopharmaceutical Sciences, School of Pharmaceutical Sciences, Shandong University , Jinan, China
| | - Cai Zhang
- Institute of Immunopharmaceutical Sciences, School of Pharmaceutical Sciences, Shandong University , Jinan, China
| | - Zhigang Tian
- Institute of Immunopharmaceutical Sciences, School of Pharmaceutical Sciences, Shandong University, Jinan, China; School of Life Sciences, University of Science and Technology of China, Hefei, China
| | - Jian Zhang
- Institute of Immunopharmaceutical Sciences, School of Pharmaceutical Sciences, Shandong University , Jinan, China
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RNAi-mediated silencing of Anxa2 inhibits breast cancer cell proliferation by downregulating cyclin D1 in STAT3-dependent pathway. Breast Cancer Res Treat 2015; 153:263-75. [PMID: 26253946 DOI: 10.1007/s10549-015-3529-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2015] [Accepted: 08/05/2015] [Indexed: 12/22/2022]
Abstract
Although the upregulated expression of Anxa2 has been implicated in carcinogenesis, cancer progression, and poor prognosis of cancer patients, the detailed molecular mechanisms involved in these processes remain unclear. In this study, we investigated the effect of Anxa2 downregulation with small interference RNA on breast cancer proliferation. To explore molecular mechanisms underlying Anxa2-mediated cancer cell proliferation. We analyzed cell cycle distribution and signaling pathways using semi-quantitative real-time PCR and Western blotting. Anxa2 depletion in breast cancer cells significantly inhibited cell proliferation by decelerating cell cycle progression. The retarded G1-to-S phase transition in Anxa2-silenced cells was attributed to the decreased levels of cyclin D1, which is a crucial promoting factor for cell proliferation because it regulates G1-to-S phase transition during cell cycle progression. We provided evidence that Anxa2 regulates epidermal growth factor-induced phosphorylation of STAT3. The reduced expression of phosphorylated STAT3 is the main factor responsible for decreased cyclin D1 levels in Anxa2-silenced breast cancer cells. Our results revealed the direct relationship between Anxa2 and activation of STAT3, a key transcription factor that plays a pivotal role in regulating breast cancer proliferation and survival. This study provides novel insights into the functions of Anxa2 as a critical molecule in cellular signal transduction and significantly improves our understanding of the mechanism through which Anxa2 regulates cell cycle and cancer cell proliferation.
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Zhang J, Du J, Liu Q, Zhang Y. Down-regulation of STAT3 expression using vector-based RNA interference promotes apoptosis in Hepatocarcinoma cells. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2015; 44:1201-5. [PMID: 26134753 DOI: 10.3109/21691401.2015.1029628] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
In this study, we followed a DNA vector-based RNAi approach to silence the signal transducer and activator of transcription 3 (STAT3) expression in Bel-7402 cells, to explore how the Janus kinase (JAK)/STAT3 signaling pathway influences the apoptosis of hepatocarcinoma cells. According to GenBank's STAT3 cDNA, the plasmid pGCsi.U6/neoRFP STAT3, which was designed for expression of STAT3 small interfering RNA (siRNA), was constructed and synthesized, and then transfected into Bel-7402 cells using Lipofectamine 2000. Cells with or without siRNA transfection were treated in wells. The apoptotic rate was detected by flow cytometry (FCM) and by staining with the Annexin V/propidium iodide (PI) apoptosis detection kit. Simultaneously, the mitochondrial membrane potential (ΔΨm) was visualized by JC-1 fluorescence staining and observed using the inverted fluorescence microscope. Furthermore, the expression of caspase-3 protein was analyzed by Western blotting. The results showed that treatment with STAT3 siRNA displayed effects in the Bel-7402 cells, causing a significantly increased apoptotic ratio (P < 0.05). The mitochondrial membrane potential of the STAT3 siRNA group, observed by the JC-1 fluorescence staining, decreased significantly. The protein expression of active caspase-3 increased with STAT3 siRNA treatment, and was significantly higher than that of the control group (P < 0.05). STAT3 gene-silencing significantly improves the apoptotic effect against Bel-7402 cells.
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Affiliation(s)
- Junwei Zhang
- a Institute of Oncology, Provincial Hospital Affiliated to Shandong University, Shandong University , Jinan , P.R. China.,b Department of Oncology , The Central Hospital of Panjin , Panjin , P.R. China
| | - Jiajun Du
- c Department of thoracic surgery , Provincial Hospital Affiliated to Shandong University, Shandong University , Jinan , P.R. China
| | - Qi Liu
- a Institute of Oncology, Provincial Hospital Affiliated to Shandong University, Shandong University , Jinan , P.R. China
| | - Yi Zhang
- d Department of General Surgery , The Central Hospital of Panjin , Panjin , P.R. China
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