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Yuan D, Guo T, Qian H, Ge H, Zhao Y, Huang A, Wang X, Cao X, Zhu D, He C, Yu H. Icariside II suppresses the tumorigenesis and development of ovarian cancer by regulating miR-144-3p/IGF2R axis. Drug Dev Res 2022; 83:1383-1393. [PMID: 35808943 DOI: 10.1002/ddr.21967] [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: 03/24/2022] [Revised: 05/18/2022] [Accepted: 06/06/2022] [Indexed: 11/10/2022]
Abstract
Ovarian cancer is one of the three major gynecological malignancies. It has been reported that Icariside II was able to block the occurrence and development of ovarian cancer. However, the detailed mechanism by which Icariside II regulates the development of ovarian cancer is widely unknown. EdU staining and transwell assays were applied to detect the proliferation, migration, and invasion of ovarian cancer cells. Next, the relationship between miR-144-3p and IGF2R was verified by the dual-luciferase reporter assay. Moreover, in vivo animal model was constructed to verify the effect of Icariside II on the development of ovarian cancer. Icariside II notably inhibited the proliferation, migration, and invasion and induced the apoptosis of ovarian cancer cells. Additionally, Icariside II markedly increased the level of miR-144-3p in ovarian cancer cells. Moreover, IGF2R was targeted by miR-144-3p directly. Icariside II significantly decreased the expression of IGF2R and the phosphorylation level of AKT and mTOR in ovarian cancer cells, which were partially reversed by miR-144-3p inhibitor. Meanwhile, Icariside II remarkably promoted the autophagy of ovarian cancer cells, as confirmed by the increased expression of Beclin-1 and ATG-5 and decreased expression of p62; however, co-treatment with miR-144-3p inhibitor notably decreased autophagy. Furthermore, the result of animal study suggested Icariside II notably inhibited ovarian tumor growth as well. Collectively, Icariside II could suppress the tumorigenesis and development of ovarian cancer by promoting autophagy via miR-144-3p/IGF2R axis. These results may be beneficial for future studies on the use of Icariside II to treat ovarian cancer.
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Affiliation(s)
- Donglan Yuan
- Department of Obstetrics and Gynecology, Taizhou People's Hospital, Affiliated Hospital of NanJing Medical University, Taizhou, Jiangsu, China
| | - Ting Guo
- Center for Molecular Medicine, Taizhou People's Hospital, Affiliated Hospital of NanJing Medical University, Taizhou, Jiangsu, China
| | - Hua Qian
- Department of Obstetrics and Gynecology, Taizhou People's Hospital, Affiliated Hospital of NanJing Medical University, Taizhou, Jiangsu, China
| | - Hongshan Ge
- Department of Obstetrics and Gynecology, Taizhou People's Hospital, Affiliated Hospital of NanJing Medical University, Taizhou, Jiangsu, China
| | - Yinling Zhao
- Department of Obstetrics and Gynecology, Taizhou People's Hospital, Affiliated Hospital of NanJing Medical University, Taizhou, Jiangsu, China
| | - Aihua Huang
- Department of Obstetrics and Gynecology, Taizhou People's Hospital, Affiliated Hospital of NanJing Medical University, Taizhou, Jiangsu, China
| | - Xiaosu Wang
- Department of Obstetrics and Gynecology, Taizhou People's Hospital, Affiliated Hospital of NanJing Medical University, Taizhou, Jiangsu, China
| | - Xiuhong Cao
- Department of Operation, Taizhou People's Hospital, Affiliated Hospital of NanJing Medical University, Taizhou, Jiangsu, China
| | - DanDan Zhu
- Department of Obstetrics and Gynecology, Taizhou People's Hospital, Affiliated Hospital of NanJing Medical University, Taizhou, Jiangsu, China
| | - CuiQin He
- Department of Obstetrics and Gynecology, Taizhou People's Hospital, Affiliated Hospital of NanJing Medical University, Taizhou, Jiangsu, China
| | - Hong Yu
- Department of Pathology, Taizhou People's Hospital, Affiliated Hospital of NanJing Medical University, Taizhou, Jiangsu, China
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2
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Cannabidiol Antiproliferative Effect in Triple-Negative Breast Cancer MDA-MB-231 Cells Is Modulated by Its Physical State and by IGF-1. Int J Mol Sci 2022; 23:ijms23137145. [PMID: 35806150 PMCID: PMC9266539 DOI: 10.3390/ijms23137145] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 06/15/2022] [Accepted: 06/23/2022] [Indexed: 12/10/2022] Open
Abstract
Cannabidiol (CBD) is a non-psychoactive phytocannabinoid that has been discussed for its safety and efficacy in cancer treatments. For this reason, we have inquired into its use on triple-negative human breast cancer. Analyzing the biological effects of CBD on MDA-MB-231, we have demonstrated that both CBD dosage and serum concentrations in the culture medium influence its outcomes; furthermore, light scattering studies demonstrated that serum impacts the CBD aggregation state by acting as a surfactant agent. Pharmacological studies on CBD in combination with chemotherapeutic agents reveal that CBD possesses a protective action against the cytotoxic effect exerted by cisplatin on MDA-MB-231 grown in standard conditions. Furthermore, in a low serum condition (0.5%), starting from a threshold concentration (5 µM), CBD forms aggregates, exerts cytostatic antiproliferative outcomes, and promotes cell cycle arrest activating autophagy. At doses above the threshold, CBD exerts a highly cytotoxic effect inducing bubbling cell death. Finally, IGF-1 and EGF antagonize the antiproliferative effect of CBD protecting cells from harmful consequences of CBD aggregates. In conclusion, CBD effect is strongly associated with the physical state and concentration that reaches the treated cells, parameters not taken into account in most of the research papers.
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Liao M, Qin R, Huang W, Zhu HP, Peng F, Han B, Liu B. Targeting regulated cell death (RCD) with small-molecule compounds in triple-negative breast cancer: a revisited perspective from molecular mechanisms to targeted therapies. J Hematol Oncol 2022; 15:44. [PMID: 35414025 PMCID: PMC9006445 DOI: 10.1186/s13045-022-01260-0] [Citation(s) in RCA: 46] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Accepted: 03/28/2022] [Indexed: 02/08/2023] Open
Abstract
Triple-negative breast cancer (TNBC) is a subtype of human breast cancer with one of the worst prognoses, with no targeted therapeutic strategies currently available. Regulated cell death (RCD), also known as programmed cell death (PCD), has been widely reported to have numerous links to the progression and therapy of many types of human cancer. Of note, RCD can be divided into numerous different subroutines, including autophagy-dependent cell death, apoptosis, mitotic catastrophe, necroptosis, ferroptosis, pyroptosis and anoikis. More recently, targeting the subroutines of RCD with small-molecule compounds has been emerging as a promising therapeutic strategy, which has rapidly progressed in the treatment of TNBC. Therefore, in this review, we focus on summarizing the molecular mechanisms of the above-mentioned seven major RCD subroutines related to TNBC and the latest progress of small-molecule compounds targeting different RCD subroutines. Moreover, we further discuss the combined strategies of one drug (e.g., narciclasine) or more drugs (e.g., torin-1 combined with chloroquine) to achieve the therapeutic potential on TNBC by regulating RCD subroutines. More importantly, we demonstrate several small-molecule compounds (e.g., ONC201 and NCT03733119) by targeting the subroutines of RCD in TNBC clinical trials. Taken together, these findings will provide a clue on illuminating more actionable low-hanging-fruit druggable targets and candidate small-molecule drugs for potential RCD-related TNBC therapies.
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Affiliation(s)
- Minru Liao
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, and West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Rui Qin
- State Key Laboratory of Southwestern Chinese Medicine Resources, Hospital of Chengdu University of Traditional Chinese Medicine, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
| | - Wei Huang
- State Key Laboratory of Southwestern Chinese Medicine Resources, Hospital of Chengdu University of Traditional Chinese Medicine, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
| | - Hong-Ping Zhu
- State Key Laboratory of Southwestern Chinese Medicine Resources, Hospital of Chengdu University of Traditional Chinese Medicine, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China.,Antibiotics Research and Re-Evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, Chengdu University, Chengdu, China
| | - Fu Peng
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, and West China School of Pharmacy, Sichuan University, Chengdu, 610041, China.
| | - Bo Han
- State Key Laboratory of Southwestern Chinese Medicine Resources, Hospital of Chengdu University of Traditional Chinese Medicine, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China.
| | - Bo Liu
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, and West China School of Pharmacy, Sichuan University, Chengdu, 610041, China.
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4
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Qin WJ, Su YG, Ding XL, Zhao R, Zhao ZJ, Wang YY. CDK4/6 inhibitor enhances the radiosensitization of esophageal squamous cell carcinoma (ESCC) by activating autophagy signaling via the suppression of mTOR. Am J Transl Res 2022; 14:1616-1627. [PMID: 35422963 PMCID: PMC8991149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Accepted: 01/27/2022] [Indexed: 06/14/2023]
Abstract
OBJECTIVE To investigate the radiosensitizing effect of cyclin D-cyclin dependent kinase (CDK) 4/6 inhibitor palbociclib on esophageal squamous cell carcinoma (ESCC) and its underlying mechanisms. METHODS The effect of palbociclib on ESCC cell radiosensitivity was detected by cell counting kit-8 (CCK-8) and clonogenic assay. γH2AX immunofluorescent staining was used to assess the repair of DNA damage induced by radiation. The expression of DNA repair proteins were examined by western blotting. Subsequently, immunoblotting and autophagy inhibitors were used to evaluate the underlying mechanisms of palbociclib triggered radiosensitization. Finally, the xenografts of ESCC were established to study the radiosensitizing effect of palbociclib in vivo. RESULTS Palbociclib combined with irradiation significantly inhibited the cell viability of ESCC in vitro. The expression level of γH2AX showed that radiation induced DNA damage repair was inhibited by palbociclib treatment. Palbociclib also suppressed the expression of RAD51 and phosphorylated DNA-dependent protein kinase catalytic subunit (p-DNA-PKcs) after irradiation. Mechanically, palbociclib enhanced the radiosensitization of ESCC by activating autophagy via suppression of mammalian target of rapamycin (mTOR). Inhibition of autophagy using chloroquine could partially reverse the radiation enhancing effect of palbociclib. Lastly, the xenografted tumor experiment confirmed the radiosensitizing effect of palbociclib in ESCC in vivo. CONCLUSION Our results showed that palbociclib improved the radiosensitivity of ESCC in vivo and in vitro, and thus it may be a promising radiosensitization agent for the treatment of ESCC.
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Affiliation(s)
- Wen-Jun Qin
- Department of Radiation Oncology, General Hospital of Ningxia Medical UniversityYinchuan 750004, Ningxia, China
- Graduate School, Ningxia Medical UniversityYinchuan 750004, Ningxia, China
- Cancer Institute, Ningxia Medical UniversityYinchuan 750004, Ningxia, China
| | - Yi-Ge Su
- Graduate School, Ningxia Medical UniversityYinchuan 750004, Ningxia, China
| | - Xiao-Long Ding
- Graduate School, Ningxia Medical UniversityYinchuan 750004, Ningxia, China
| | - Ren Zhao
- Department of Radiation Oncology, General Hospital of Ningxia Medical UniversityYinchuan 750004, Ningxia, China
- Cancer Institute, Ningxia Medical UniversityYinchuan 750004, Ningxia, China
| | - Zhi-Jun Zhao
- Department of Laboratory Medicine, General Hospital of Ningxia Medical UniversityYinchuan 750004, Ningxia, China
| | - Yan-Yang Wang
- Department of Radiation Oncology, General Hospital of Ningxia Medical UniversityYinchuan 750004, Ningxia, China
- Graduate School, Ningxia Medical UniversityYinchuan 750004, Ningxia, China
- Cancer Institute, Ningxia Medical UniversityYinchuan 750004, Ningxia, China
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5
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Sipos F, Bohusné Barta B, Simon Á, Nagy L, Dankó T, Raffay RE, Petővári G, Zsiros V, Wichmann B, Sebestyén A, Műzes G. Survival of HT29 Cancer Cells Is Affected by IGF1R Inhibition via Modulation of Self-DNA-Triggered TLR9 Signaling and the Autophagy Response. Pathol Oncol Res 2022; 28:1610322. [PMID: 35651701 PMCID: PMC9148969 DOI: 10.3389/pore.2022.1610322] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Accepted: 04/27/2022] [Indexed: 02/05/2023]
Abstract
Purpose: In HT29 colon cancer cells, a close interplay between self-DNA-induced TLR9 signaling and autophagy response was found, with remarkable effects on cell survival and differentiation. IGF1R activation drives the development and malignant progression of colorectal cancer. IGF1R inhibition displays a controversial effect on autophagy. The interrelated roles of IGF1R inhibition and TLR9/autophagy signaling in HT29 cancer cells have not yet been clarified. In our study, we aimed to investigate the complex interplay of IGF1R inhibition and TLR9/autophagy signaling in HT29 cells. Methods: HT29 cells were incubated with tumor-originated self-DNA with or without inhibitors of IGF1R (picropodophyllin), autophagy (chloroquine), and TLR9 (ODN2088), respectively. Cell proliferation and metabolic activity measurements, direct cell counting, NanoString and Taqman gene expression analyses, immunocytochemistry, WES Simple Western blot, and transmission electron microscopy investigations were performed. Results: The concomitant use of tumor-derived self-DNA and IGF1R inhibitors displays anti-proliferative potential, which can be reversed by parallel TLR9 signaling inhibition. The distinct effects of picropodophyllin, ODN2088, and chloroquine per se or in combination on HT29 cell proliferation and autophagy suggest that either the IGF1R-associated or non-associated autophagy machinery is "Janus-faced" regarding its actions on cell proliferation. Autophagy, induced by different combinations of self-DNA and inhibitors is not sufficient to rescue HT29 cells from death but results in the survival of some CD133-positive stem-like HT29 cells. Conclusion: The creation of new types of combined IGF1R, autophagy, and/or TLR9 signaling inhibitors would play a significant role in the development of more personalized anti-tumor therapies for colorectal cancer.
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Affiliation(s)
- Ferenc Sipos
- Department of Internal Medicine and Hematology, Semmelweis University, Budapest, Hungary
- *Correspondence: Ferenc Sipos,
| | - Bettina Bohusné Barta
- Department of Internal Medicine and Hematology, Semmelweis University, Budapest, Hungary
| | - Ágnes Simon
- Department of Internal Medicine and Hematology, Semmelweis University, Budapest, Hungary
| | - Lőrinc Nagy
- Department of Internal Medicine and Hematology, Semmelweis University, Budapest, Hungary
| | - Titanilla Dankó
- Department of Pathology and Experimental Cancer Research, Semmelweis University, Budapest, Hungary
| | - Regina Eszter Raffay
- Department of Pathology and Experimental Cancer Research, Semmelweis University, Budapest, Hungary
| | - Gábor Petővári
- Department of Pathology and Experimental Cancer Research, Semmelweis University, Budapest, Hungary
| | - Viktória Zsiros
- Department of Anatomy, Histology and Embryology, Semmelweis University, Budapest, Hungary
| | | | - Anna Sebestyén
- Department of Pathology and Experimental Cancer Research, Semmelweis University, Budapest, Hungary
| | - Györgyi Műzes
- Department of Internal Medicine and Hematology, Semmelweis University, Budapest, Hungary
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6
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Singh S, Utreja D, Kumar V. Pyrrolo[2,1-f][1,2,4]triazine: a promising fused heterocycle to target kinases in cancer therapy. Med Chem Res 2021; 31:1-25. [PMID: 34803342 PMCID: PMC8590428 DOI: 10.1007/s00044-021-02819-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2021] [Accepted: 10/29/2021] [Indexed: 12/21/2022]
Abstract
Cancer is the second leading cause of death worldwide responsible for about 10 million deaths per year. To date several approaches have been developed to treat this deadly disease including surgery, chemotherapy, radiation therapy, hormonal therapy, targeted therapy, and synthetic lethality. The targeted therapy refers to targeting only specific proteins or enzymes that are dysregulated in cancer rather than killing all rapidly dividing cells, has gained much attention in the recent past. Kinase inhibition is one of the most successful approaches in targeted therapy. As of 30 March 2021, FDA has approved 65 small molecule protein kinase inhibitors and most of them are for cancer therapy. Interestingly, several kinase inhibitors contain one or more fused heterocycles as part of their structures. Pyrrolo[2,1-f][1,2,4]triazine is one the most interesting fused heterocycle that is an integral part of several kinase inhibitors and nucleoside drugs viz. avapritinib and remdesivir. This review articles focus on the recent advances made in the development of kinase inhibitors containing pyrrolo[2,1-f][1,2,4]triazine scaffold. ![]()
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Affiliation(s)
- Sarbjit Singh
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, NE 68198 USA
| | - Divya Utreja
- Department of Chemistry, Punjab Agricultural University, Ludhiana, 141004 Punjab India
| | - Vimal Kumar
- Department of Chemistry, Dr B. R. Ambedkar National Institute of Technology (NIT), Jalandhar, 144011 Punjab India
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7
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Ghafouri-Fard S, Abak A, Mohaqiq M, Shoorei H, Taheri M. The Interplay Between Non-coding RNAs and Insulin-Like Growth Factor Signaling in the Pathogenesis of Neoplasia. Front Cell Dev Biol 2021; 9:634512. [PMID: 33768092 PMCID: PMC7985092 DOI: 10.3389/fcell.2021.634512] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Accepted: 02/02/2021] [Indexed: 12/11/2022] Open
Abstract
The insulin-like growth factors (IGFs) are polypeptides with similar sequences with insulin. These factors regulate cell growth, development, maturation, and aging via different processes including the interplay with MAPK, Akt, and PI3K. IGF signaling participates in the pathogenesis of neoplasia, insulin resistance, diabetes mellitus, polycystic ovarian syndrome, cerebral ischemic injury, fatty liver disease, and several other conditions. Recent investigations have demonstrated the interplay between non-coding RNAs and IGF signaling. This interplay has fundamental roles in the development of the mentioned disorders. We designed the current study to search the available data about the role of IGF-associated non-coding RNAs in the evolution of neoplasia and other conditions. As novel therapeutic strategies have been designed for modification of IGF signaling, identification of the impact of non-coding RNAs in this pathway is necessary for the prediction of response to these modalities.
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Affiliation(s)
- Soudeh Ghafouri-Fard
- Department of Medical Genetics, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Atefe Abak
- Department of Medical Genetics, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mahdi Mohaqiq
- School of Advancement, Centennial College, Ashtonbee Campus, Toronto, ON, Canada
- Wake Forest Institute for Regenerative Medicine, School of Medicine, Wake Forest University, Winston-Salem, NC, United States
| | - Hamed Shoorei
- Department of Anatomical Sciences, Faculty of Medicine, Biranjd University of Medical Sciences, Birjand, Iran
| | - Mohammad Taheri
- Urology and Nephrology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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8
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Xiao M, Benoit A, Hasmim M, Duhem C, Vogin G, Berchem G, Noman MZ, Janji B. Targeting Cytoprotective Autophagy to Enhance Anticancer Therapies. Front Oncol 2021; 11:626309. [PMID: 33718194 PMCID: PMC7951055 DOI: 10.3389/fonc.2021.626309] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Accepted: 01/15/2021] [Indexed: 12/21/2022] Open
Abstract
Autophagy is a highly regulated multi-step process that occurs at the basal level in almost all cells. Although the deregulation of the autophagy process has been described in several pathologies, the role of autophagy in cancer as a cytoprotective mechanism is currently well established and supported by experimental and clinical evidence. Our understanding of the molecular mechanism of the autophagy process has largely contributed to defining how we can harness this process to improve the benefit of cancer therapies. While the role of autophagy in tumor resistance to chemotherapy is extensively documented, emerging data point toward autophagy as a mechanism of cancer resistance to radiotherapy, targeted therapy, and immunotherapy. Therefore, manipulating autophagy has emerged as a promising strategy to overcome tumor resistance to various anti-cancer therapies, and autophagy modulators are currently evaluated in combination therapies in several clinical trials. In this review, we will summarize our current knowledge of the impact of genetically and pharmacologically modulating autophagy genes and proteins, involved in the different steps of the autophagy process, on the therapeutic benefit of various cancer therapies. We will also briefly discuss the challenges and limitations to developing potent and selective autophagy inhibitors that could be used in ongoing clinical trials.
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Affiliation(s)
- Malina Xiao
- Tumor Immunotherapy and Microenvironment (TIME) Group, Department of Oncology, Luxembourg Institute of Health (LIH), Luxembourg City, Luxembourg
| | - Alice Benoit
- Tumor Immunotherapy and Microenvironment (TIME) Group, Department of Oncology, Luxembourg Institute of Health (LIH), Luxembourg City, Luxembourg
| | - Meriem Hasmim
- Tumor Immunotherapy and Microenvironment (TIME) Group, Department of Oncology, Luxembourg Institute of Health (LIH), Luxembourg City, Luxembourg
| | - Caroline Duhem
- Department of Hemato-oncology, Centre Hospitalier du Luxembourg, Luxembourg City, Luxembourg
| | - Guillaume Vogin
- Université de Lorraine - UMR 7365, Ingénierie Moléculaire et Physiopathologie Articulaire (IMoPA), Vandoeuvre-lès-Nancy, France.,Centre François Baclesse, Esch-sur-Alzette, Luxembourg
| | - Guy Berchem
- Tumor Immunotherapy and Microenvironment (TIME) Group, Department of Oncology, Luxembourg Institute of Health (LIH), Luxembourg City, Luxembourg.,Department of Hemato-oncology, Centre Hospitalier du Luxembourg, Luxembourg City, Luxembourg
| | - Muhammad Zaeem Noman
- Tumor Immunotherapy and Microenvironment (TIME) Group, Department of Oncology, Luxembourg Institute of Health (LIH), Luxembourg City, Luxembourg
| | - Bassam Janji
- Tumor Immunotherapy and Microenvironment (TIME) Group, Department of Oncology, Luxembourg Institute of Health (LIH), Luxembourg City, Luxembourg
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9
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He Z, Khatib AM, Creemers JWM. Loss of Proprotein Convertase Furin in Mammary Gland Impairs proIGF1R and proIR Processing and Suppresses Tumorigenesis in Triple Negative Breast Cancer. Cancers (Basel) 2020; 12:cancers12092686. [PMID: 32962246 PMCID: PMC7563341 DOI: 10.3390/cancers12092686] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 08/27/2020] [Accepted: 09/17/2020] [Indexed: 12/31/2022] Open
Abstract
Simple Summary Triple-negative breast cancer (TNBC) is known to have a poor prognosis and limited treatment options. The aim of the current study is to evaluate the role of Furin, a proprotein convertase involved in the activation of wide range of protein precursors in TNBC progression. The generation of a TNBC mouse model lacking Furin specifically in the mammary gland confirmed that Furin is implicated in TNBC tumor progression and the derived lung metastasis. Further analysis revealed that the proteolytic activation of proIGF1R and proIR receptors, two substrates of Furin involved in TNBC were inhibited in these mice and was associated with reduced AKT and ERK1/2 expression and phosphorylation. In addition, Furin is frequently overexpressed in TNBC tumors and correlates with poor patient prognosis, suggesting the use of Furin inhibition as a potential adjunct therapy in TNBC. Abstract In triple negative breast cancer (TNBC) cell lines, the proprotein convertase Furin cleaves and then activates several protein precursors involved in oncogenesis. However, the in vivo role of Furin in the mammary gland and how mammary gland-specific Furin knockout specifically influences tumor initiation and progression of TNBC is unknown. Here, we report that Furin is frequently overexpressed in TNBC tumors and this correlates with poor prognosis in patients with TNBC tumors. In a whey acidic protein (WAP)-induced mammary epithelial cell-specific Furin knockout mouse model, mice show normal mammary development. However, loss of Furin in mammary glands inhibits primary tumor growth and lung metastasis in an oncogene-induced TNBC mouse model. Further analysis of TNBC mice lacking Furin revealed repressed maturation of the Furin substrates proIGF1R and proIR that are associated with reduced expression and activation of their downstream effectors PI3K/AKT and MAPK/ERK1/2. In addition, these tissues showed enhanced apoptotic signaling. In conclusion, our findings reveal that upregulated Furin expression reflects the poor prognosis of TNBC patients and highlights the therapeutic potential of inhibiting Furin in TNBC tumors.
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Affiliation(s)
- Zongsheng He
- Laboratory of Biochemical Neuroendocrinology, Department of Human Genetics, KU Leuven (Katholieke Universiteit Leuven), 3000 Leuven, Belgium;
| | - Abdel-Majid Khatib
- INSERM, LAMC, UMR 1029, Allée Geoffroy St Hilaire, 33615 Pessac, France
- Digestive group, Institut Bergonié, 33000 Bordeaux, France
- Correspondence: (A.-M.K.); (J.W.M.C.)
| | - John W. M. Creemers
- Laboratory of Biochemical Neuroendocrinology, Department of Human Genetics, KU Leuven (Katholieke Universiteit Leuven), 3000 Leuven, Belgium;
- Correspondence: (A.-M.K.); (J.W.M.C.)
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10
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Amani N, Shaki F, Shokrzadeh M. Contribution of Autophagy in Acquired Drug Resistance of Human Breast Cancer Cells MCF7 to Doxorubicin. ACTA ACUST UNITED AC 2019. [DOI: 10.1089/aivt.2019.0007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Nahid Amani
- Pharmaceutical Sciences Research Center, Faculty of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran
- Department of Toxicology and Pharmacology, Faculty of Pharmacy, Mazandaran University of Medical Science, Sari, Iran
| | - Fatemeh Shaki
- Pharmaceutical Sciences Research Center, Faculty of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran
- Department of Toxicology and Pharmacology, Faculty of Pharmacy, Mazandaran University of Medical Science, Sari, Iran
| | - Mohammad Shokrzadeh
- Pharmaceutical Sciences Research Center, Faculty of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran
- Department of Toxicology and Pharmacology, Faculty of Pharmacy, Mazandaran University of Medical Science, Sari, Iran
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11
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Li M, Liu J, Li S, Feng Y, Yi F, Wang L, Wei S, Cao L. Autophagy-related 7 modulates tumor progression in triple-negative breast cancer. J Transl Med 2019; 99:1266-1274. [PMID: 30988371 DOI: 10.1038/s41374-019-0249-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Revised: 02/11/2019] [Accepted: 02/14/2019] [Indexed: 12/30/2022] Open
Abstract
The exact role of autophagy in breast cancers remains elusive. In this study, we explored the potential functions of autophagy-related 7 (Atg7) in breast cancer cell lines and tissues. Compared to normal breast tissue, a significantly lower expression of Atg7 was observed in triple-negative breast cancer (TNBC), but not other subtypes. A higher Atg7 expression was significantly associated with favorable clinicopathologic factors and better prognostic outcomes in patients with TNBC. Reflecting the clinical and pathologic observations, Atg7 was found to inhibit proliferation and migration, but promotes apoptosis in TNBC cell lines. Furthermore, Atg7 suppressed epithelial-mesenchymal transition through inhibiting aerobic glycolysis metabolism of TNBC cells. These findings provided novel molecular and clinical evidence of Atg7 in modulating the biological behavior of TNBC, thus warranting further investigation.
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Affiliation(s)
- Mingyang Li
- Key Laboratory of Medical Cell Biology, Ministry of Education; Institute of Translational Medicine, China Medical University;, Liaoning Province Collaborative Innovation Center of Aging Related Disease Diagnosis and Treatment and Prevention, Shenyang, Liaoning Province, China
| | - Jingwei Liu
- Key Laboratory of Medical Cell Biology, Ministry of Education; Institute of Translational Medicine, China Medical University;, Liaoning Province Collaborative Innovation Center of Aging Related Disease Diagnosis and Treatment and Prevention, Shenyang, Liaoning Province, China
| | - Sihui Li
- Key Laboratory of Medical Cell Biology, Ministry of Education; Institute of Translational Medicine, China Medical University;, Liaoning Province Collaborative Innovation Center of Aging Related Disease Diagnosis and Treatment and Prevention, Shenyang, Liaoning Province, China
| | - Yanling Feng
- Key Laboratory of Medical Cell Biology, Ministry of Education; Institute of Translational Medicine, China Medical University;, Liaoning Province Collaborative Innovation Center of Aging Related Disease Diagnosis and Treatment and Prevention, Shenyang, Liaoning Province, China
| | - Fei Yi
- Key Laboratory of Medical Cell Biology, Ministry of Education; Institute of Translational Medicine, China Medical University;, Liaoning Province Collaborative Innovation Center of Aging Related Disease Diagnosis and Treatment and Prevention, Shenyang, Liaoning Province, China
| | - Liang Wang
- Department of pathology, The College of Basic Medical Science, China Medical University, Shenyang, Liaoning Province, China.
| | - Shi Wei
- Section of Surgical Pathology, Comprehensive Cancer Center, The University of Alabama at Birmingham, Birmingham, AL, USA.
| | - Liu Cao
- Key Laboratory of Medical Cell Biology, Ministry of Education; Institute of Translational Medicine, China Medical University;, Liaoning Province Collaborative Innovation Center of Aging Related Disease Diagnosis and Treatment and Prevention, Shenyang, Liaoning Province, China.
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12
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Abstract
Autophagy is a highly conserved catabolic process induced under various conditions of cellular stress, which prevents cell damage and promotes survival in the event of energy or nutrient shortage and responds to various cytotoxic insults. Thus, autophagy has primarily cytoprotective functions and needs to be tightly regulated to respond correctly to the different stimuli that cells experience, thereby conferring adaptation to the ever-changing environment. It is now apparent that autophagy is deregulated in the context of various human pathologies, including cancer and neurodegeneration, and its modulation has considerable potential as a therapeutic approach.
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Affiliation(s)
- Ivan Dikic
- Institute of Biochemistry II, School of Medicine, Goethe University, Frankfurt am Main, Germany. .,Buchmann Institute for Molecular Life Sciences, Goethe University, Frankfurt am Main, Germany.
| | - Zvulun Elazar
- Department of Biomolecular Sciences, Weizmann Institute of Science, Rehovot, Israel.
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13
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Li J, Halfter K, Zhang M, Saad C, Xu K, Bauer B, Huang Y, Shi L, Mansmann UR. Computational analysis of receptor tyrosine kinase inhibitors and cancer metabolism: implications for treatment and discovery of potential therapeutic signatures. BMC Cancer 2019; 19:600. [PMID: 31208363 PMCID: PMC6580552 DOI: 10.1186/s12885-019-5804-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Accepted: 06/06/2019] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND Receptor tyrosine kinase (RTK) inhibitors are frequently used to treat cancers and the results have been mixed, some of these small molecule drugs are highly successful while others show a more modest response. A high number of studies have been conducted to investigate the signaling mechanisms and corresponding therapeutic influence of RTK inhibitors in order to explore the therapeutic potential of RTK inhibitors. However, most of these studies neglected the potential metabolic impact of RTK inhibitors, which could be highly associated with drug efficacy and adverse effects during treatment. METHODS In order to fill these knowledge gaps and improve the therapeutic utilization of RTK inhibitors a large-scale computational simulation/analysis over multiple types of cancers with the treatment responses of RTK inhibitors was performed. The pharmacological data of all eight RTK inhibitor and gene expression profiles of 479 cell lines from The Cancer Cell Line Encyclopedia were used. RESULTS The potential metabolic impact of RTK inhibitors on different types of cancers were analyzed resulting in cancer-specific (breast, liver, pancreas, central nervous system) metabolic signatures. Many of these are in line with results from different independent studies, thereby providing indirect verification of the obtained results. CONCLUSIONS Our study demonstrates the potential of using a computational approach on signature-based-analysis over multiple cancer types. The results reveal the strength of multiple-cancer analysis over conventional signature-based analysis on a single cancer type.
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Affiliation(s)
- Jian Li
- Institute for Medical Informatics, Biometry and Epidemiology, Ludwig-Maximilians-University München, Munich, Germany
- German Cancer Consortium (DKTK), Heidelberg, Germany
- German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Kathrin Halfter
- Institute for Medical Informatics, Biometry and Epidemiology, Ludwig-Maximilians-University München, Munich, Germany
| | - Mengying Zhang
- Institute for Medical Informatics, Biometry and Epidemiology, Ludwig-Maximilians-University München, Munich, Germany
| | - Christian Saad
- Department of Computational Science, University of Augsburg, Augsburg, Germany
| | - Kai Xu
- Department of Orthopaedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
| | - Bernhard Bauer
- Department of Computational Science, University of Augsburg, Augsburg, Germany
| | - Yijiang Huang
- Department of Orthopaedics, Physical Medicine and Rehabilitation, University Hospital, LMU, Munich, Germany
| | - Lei Shi
- Institute of Photomedicine, Shanghai Skin Disease Hospital, Tongji University School of Medicine, Shanghai, People’s Republic of China
| | - Ulrich R. Mansmann
- Institute for Medical Informatics, Biometry and Epidemiology, Ludwig-Maximilians-University München, Munich, Germany
- German Cancer Consortium (DKTK), Heidelberg, Germany
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14
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Teoh PL, Liau M, Cheong BE. Phyla nodiflora L. Extracts Induce Apoptosis and Cell Cycle Arrest in Human Breast Cancer Cell Line, MCF-7. Nutr Cancer 2019; 71:668-675. [PMID: 30663402 DOI: 10.1080/01635581.2018.1559942] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Phyla nodiflora L. has been used as medicinal remedies for various ailments due to its antioxidant, anti-inflammatory, anti-bacterial, anti-tumor activity. Previously, we found that the plant extracts induced DNA fragmentation in MCF-7. This study was to investigate the modes of action of P. nodiflora in inhibiting breast cancer cells using leaf ethyl acetate (EA leaf), stem ethyl acetate (EA stem) and stem methanol (Met stem) extracts. The MTT assay showed that the anti-proliferative effects of P. nodiflora extracts were selective towards MCF-7 with a minimal effect on MCF10A. Morphological changes such as cell shrinkage and nuclear condensation were observed in treated cells. We found that induction of apoptosis by EA leaf and EA stem was mitochondrial-dependent while loss of mitochondrial membrane potential was not found in Met stem-treated cells. In addition, the expression levels of AIFM1, CASP9, CFLAR, and IGF1R were altered after treatment. Decreased BCL-2 expression was found in treated cells while BAX and caspases' expression was upregulated or maintained. All extracts caused perturbation of cell cycle at S phase by dysregulating the expression of cell cycle regulators such as CDKs and cyclins. Our findings indicate that P. nodiflora inhibits MCF-7 cells by inducing apoptosis and perturbing cell cycle.
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Affiliation(s)
- Peik Lin Teoh
- a Biotechnology Research Institute, Universiti Malaysia Sabah , Kota Kinabalu , Sabah , Malaysia
| | - Monica Liau
- a Biotechnology Research Institute, Universiti Malaysia Sabah , Kota Kinabalu , Sabah , Malaysia
| | - Bo Eng Cheong
- a Biotechnology Research Institute, Universiti Malaysia Sabah , Kota Kinabalu , Sabah , Malaysia
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15
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Estrogen receptor-beta is a potential target for triple negative breast cancer treatment. Oncotarget 2018; 9:33912-33930. [PMID: 30338035 PMCID: PMC6188058 DOI: 10.18632/oncotarget.26089] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Accepted: 07/12/2018] [Indexed: 12/31/2022] Open
Abstract
Triple Negative breast cancer (TNBC) is a subtype of breast cancer that lacks the expression of estrogen receptor (ER), progesterone receptor, and human epidermal growth factor receptor 2. TNBC accounts for 15-20% of all breast cancer cases but accounts for over 50% of mortality. We propose that Estrogen receptor-beta (ERβ) and IGF2 play a significant role in the pathogenesis of TNBCs, and could be important targets for future therapy. Tissue microarrays (TMAs) from over 250 TNBC patients' were analyzed for ERβ and IGF2 expression by immunohistochemistry. Expression was correlated with clinical outcomes. In addition, TNBC cell lines Caucasians (CA): MB-231/BT549 and African Americans (AAs): MB-468/HCC70/HCC1806 were used to investigate the effect of hormonal and growth factor regulation on cell proliferation. TMAs from AAs had higher expression of ERβ and IGF2 expression when compared to CA. ERβ and IGF2 were found to be upregulated in our TNBC cell lines when compared to other cell types. TNBC cells treated with ERβ agonist displayed significant increase in cell proliferation and migration when compared to controls. AA tissue samples from TNBC patients had higher expression of ERβ. African-American breast cancer TNBC tissue samples from TNBC patients have higher expression of ERβ. In addition, TNBC cell lines were also found to express high levels of ERβ. IGF2 increased transcription of ERβ in TNBC cells. Understanding the mechanisms of IGF2/ERβ axis in TNBC tumors could provide an opportunity to target this aggressive subtype of breast cancer.
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16
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IGF1R upregulation confers resistance to isoform-specific inhibitors of PI3K in PIK3CA-driven ovarian cancer. Cell Death Dis 2018; 9:944. [PMID: 30237504 PMCID: PMC6148236 DOI: 10.1038/s41419-018-1025-8] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Revised: 08/06/2018] [Accepted: 09/03/2018] [Indexed: 12/14/2022]
Abstract
Genomic alterations (GA) in PIK3CA leads to the hyper-activation of the phosphatidylinositol-4, 5-bisphosphate 3-kinase (PI3K) pathway in more than 20% of ovarian cancer (OC) patients. Therefore, PI3K therapies are under clinical evaluation for this subset of patients. Evidently, in clinical trials testing the efficacy of isoform-specific inhibitors of PI3K (PI3Ki), patients having a stable disease eventually relapse, as tumors become resistant to treatment. Hence, there is an urgent clinical need to develop new therapeutic combinations to improve the efficacy of PI3Ki in PIK3CA-driven OC patients. Here we identified the molecular mechanism that limits the efficacy of the beta-sparing PI3Ki, Taselisib (GDC0032), in PIK3CA-mutated OC cell lines (IGROV1 and OAW42) that acquired resistance to GDC0032. By comparing the molecular profile of GDC0032-sensitve and -resistant OC cell lines, we found that AKT/mTOR inhibition is required for GDC0032 efficacy. In resistant cells, the sustained activation of AKT/mTOR was regulated by the upregulation of the insulin growth factor 1 receptor (IGF1R). Knockdown of IGF1R re-sensitized cells to GDC0032 in vitro, and the combination of AEW541, an IGF1R inhibitor, with GDC0032 exhibited potent anti-tumor activity in vitro and in vivo. We further demonstrated that IGF1R regulates tumor cell proliferation in IGROV1 cells, whereas in OAW42, it determines autophagy as well. Overall, our findings suggest that the dual inhibition of PI3K and IGF1R may be considered as a new therapeutic strategy in PIK3CA-driven OC.
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17
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Han Y, Fan S, Qin T, Yang J, Sun Y, Lu Y, Mao J, Li L. Role of autophagy in breast cancer and breast cancer stem cells (Review). Int J Oncol 2018; 52:1057-1070. [PMID: 29436618 DOI: 10.3892/ijo.2018.4270] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Accepted: 01/09/2018] [Indexed: 11/05/2022] Open
Abstract
Autophagy is a key catabolic process, in which cytosolic cargo is engulfed by the formation of a double membrane and then degraded through the fusing of autophagosomes with lysosomes. Autophagy is a constitutively active, evolutionarily conserved, catabolic process important for the maintenance of homeostasis in cellular stress responses and cell survival. Although the mechanisms of autophagy have not yet been fully elucidated, emerging evidence suggests that it plays a dual role in breast cancer and in maintaining the activity of breast cancer stem cells (CSCs). However, it may play a complex role in breast CSC therapy. Breast CSCs, a population of cells with the ability to self-renew, differentiate, and initiate and sustain tumor growth, play an essential role in cancer recurrence, anticancer resistance and metastasis. In addition, the elucidation of the association between autophagy and apoptosis in the tumor context is crucial in order to better address appropriate therapy strategies. In the present review, a summary of the mechanisms and roles of autophagy in breast cancer and CSCs is presented. The potential value of such autophagy modulators in the development of novel breast cancer therapies is discussed.
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Affiliation(s)
- Yanyan Han
- Department of Pathology, Dalian Medical University, Liaoning 116044, P.R. China
| | - Shujun Fan
- Department of Pathology, Dalian Medical University, Liaoning 116044, P.R. China
| | - Tao Qin
- Department of Pathology, Dalian Medical University, Liaoning 116044, P.R. China
| | - Jinfeng Yang
- Department of Pathology, Dalian Medical University, Liaoning 116044, P.R. China
| | - Yan Sun
- Department of Pathology, Dalian Medical University, Liaoning 116044, P.R. China
| | - Ying Lu
- Department of Pathology, Dalian Medical University, Liaoning 116044, P.R. China
| | - Jun Mao
- Department of Pathology, Dalian Medical University, Liaoning 116044, P.R. China
| | - Lianhong Li
- Department of Pathology, Dalian Medical University, Liaoning 116044, P.R. China
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18
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Sipos F, Székely H, Kis ID, Tulassay Z, Műzes G. Relation of the IGF/IGF1R system to autophagy in colitis and colorectal cancer. World J Gastroenterol 2017; 23:8109-8119. [PMID: 29290648 PMCID: PMC5739918 DOI: 10.3748/wjg.v23.i46.8109] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Revised: 10/28/2017] [Accepted: 12/04/2017] [Indexed: 02/06/2023] Open
Abstract
Metabolic syndrome (MetS), as a chronic inflammatory disorder has a potential role in the development of inflammatory and cancerous complications of the colonic tissue. The interaction of DNA damage and inflammation is affected by the insulin-like growth factor 1 receptor (IGF1R) signaling pathway. The IGF1R pathway has been reported to regulate autophagy, as well, but sometimes through a bidirectional context. Targeting the IGF1R-autophagy crosstalk could represent a promising strategy for the development of new antiinflammatory and anticancer therapies, and may help for subjects suffering from MetS who are at increased risk of colorectal cancer. However, therapeutic responses to targeted therapies are often shortlived, since a signaling crosstalk of IGF1R with other receptor tyrosine kinases or autophagy exists, leading to acquired cellular resistance to therapy. From a pharmacological point of view, it is attractive to speculate that synergistic benefits could be achieved by inhibition of one of the key effectors of the IGF1R pathway, in parallel with the pharmacological stimulation of the autophagy machinery, but cautiousness is also required, because pharmacologic IGF1R modulation can initiate additional, sometimes unfavorable biologic effects.
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Affiliation(s)
- Ferenc Sipos
- 2nd Department of Internal Medicine, Semmelweis University, Budapest 1088, Hungary
| | - Hajnal Székely
- 2nd Department of Internal Medicine, Semmelweis University, Budapest 1088, Hungary
| | - Imre Dániel Kis
- Faculty of Medicine, Semmelweis University, Budapest 1088, Hungary
| | - Zsolt Tulassay
- Molecular Medicine Research Group, Hungarian Academy of Sciences, Budapest 1088, Hungary
| | - Györgyi Műzes
- 2nd Department of Internal Medicine, Semmelweis University, Budapest 1088, Hungary
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19
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Hamilton N, Austin D, Márquez-Garbán D, Sanchez R, Chau B, Foos K, Wu Y, Vadgama J, Pietras R. Receptors for Insulin-Like Growth Factor-2 and Androgens as Therapeutic Targets in Triple-Negative Breast Cancer. Int J Mol Sci 2017; 18:E2305. [PMID: 29099049 PMCID: PMC5713274 DOI: 10.3390/ijms18112305] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Revised: 10/25/2017] [Accepted: 10/25/2017] [Indexed: 12/30/2022] Open
Abstract
Triple-negative breast cancer (TNBC) occurs in 10-15% of all breast cancer patients, yet it accounts for about half of all breast cancer deaths. There is an urgent need to identify new antitumor targets to provide additional treatment options for patients afflicted with this aggressive disease. Preclinical evidence suggests a critical role for insulin-like growth factor-2 (IGF2) and androgen receptor (AR) in regulating TNBC progression. To advance this work, a panel of TNBC cell lines was investigated with all cell lines showing significant expression of IGF2. Treatment with IGF2 stimulated cell proliferation in vitro (p < 0.05). Importantly, combination treatments with IGF1R inhibitors BMS-754807 and NVP-AEW541 elicited significant inhibition of TNBC cell proliferation (p < 0.001). Based on Annexin-V binding assays, BMS-754807, NVP-AEW541 and enzalutamide induced TNBC cell death (p < 0.005). Additionally, combination of enzalutamide with BMS-754807 or NVP-AEW541 exerted significant reductions in TNBC proliferation even in cells with low AR expression (p < 0.001). Notably, NVP-AEW541 and BMS-754807 reduced AR levels in BT549 TNBC cells. These results provide evidence that IGF2 promotes TNBC cell viability and proliferation, while inhibition of IGF1R/IR and AR pathways contribute to blockade of TNBC proliferation and promotion of apoptosis in vitro.
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Affiliation(s)
- Nalo Hamilton
- UCLA School of Nursing, University of California at Los Angeles, Los Angeles, CA 90095, USA.
- UCLA Jonsson Comprehensive Cancer Center, University of California at Los Angeles, Los Angeles, CA 90095, USA.
| | - David Austin
- Department of Medicine, Division of Cancer Research and Training, Charles Drew University School of Medicine and Science, Los Angeles, CA 90059, USA.
| | - Diana Márquez-Garbán
- UCLA Jonsson Comprehensive Cancer Center, University of California at Los Angeles, Los Angeles, CA 90095, USA.
- UCLA David Geffen School of Medicine, Department of Medicine, Division of Hematology-Oncology, University of California at Los Angeles, Los Angeles, CA 90095, USA.
| | - Rudy Sanchez
- Department of Biology, California State University Channel Islands, Camarillo, CA 93012, USA.
| | - Brittney Chau
- Department of Integrative Ecology and Evolutionary Biology and Physiology, UCLA College of Life Sciences, University of California at Los Angeles, Los Angeles, CA 90095, USA.
| | - Kay Foos
- Department Physiological, UCLA College of Life Sciences, University of California at Los Angeles, Los Angeles, CA 90095, USA.
| | - Yanyuan Wu
- Department of Medicine, Division of Cancer Research and Training, Charles Drew University School of Medicine and Science, Los Angeles, CA 90059, USA.
| | - Jaydutt Vadgama
- UCLA Jonsson Comprehensive Cancer Center, University of California at Los Angeles, Los Angeles, CA 90095, USA.
- Department of Medicine, Division of Cancer Research and Training, Charles Drew University School of Medicine and Science, Los Angeles, CA 90059, USA.
- UCLA David Geffen School of Medicine, Department of Medicine, Division of Hematology-Oncology, University of California at Los Angeles, Los Angeles, CA 90095, USA.
| | - Richard Pietras
- Department of Medicine, Division of Cancer Research and Training, Charles Drew University School of Medicine and Science, Los Angeles, CA 90059, USA.
- UCLA David Geffen School of Medicine, Department of Medicine, Division of Hematology-Oncology, University of California at Los Angeles, Los Angeles, CA 90095, USA.
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