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Zhao H, Ling Y, He J, Dong J, Mo Q, Wang Y, Zhang Y, Yu H, Tang C. Potential targets and therapeutics for cancer stem cell-based therapy against drug resistance in hepatocellular carcinoma. Drug Resist Updat 2024; 74:101084. [PMID: 38640592 DOI: 10.1016/j.drup.2024.101084] [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: 02/26/2024] [Revised: 03/22/2024] [Accepted: 04/06/2024] [Indexed: 04/21/2024]
Abstract
Hepatocellular carcinoma (HCC) is the most common digestive malignancyin the world, which is frequently diagnosed at late stage with a poor prognosis. For most patients with advanced HCC, the therapeutic options arelimiteddue to cancer occurrence of drug resistance. Hepatic cancer stem cells (CSCs) account for a small subset of tumor cells with the ability of self-renewal and differentiationin HCC. It is widely recognized that the presence of CSCs contributes to primary and acquired drug resistance. Therefore, hepatic CSCs-targeted therapy is considered as a promising strategy to overcome drug resistance and improve therapeutic outcome in HCC. In this article, we review drug resistance in HCC and provide a summary of potential targets for CSCs-based therapy. In addition, the development of CSCs-targeted therapeuticsagainst drug resistance in HCC is summarized in both preclinical and clinical trials. The in-depth understanding of CSCs-related drug resistance in HCC will favor optimization of the current therapeutic strategies and gain encouraging therapeutic outcomes.
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Affiliation(s)
- Hongxing Zhao
- Department of Radiology, First affiliated Hospital of Huzhou University, Huzhou, Zhejiang Province, China
| | - Yuhang Ling
- Central Laboratory, First affiliated Hospital of Huzhou University, Huzhou, Zhejiang Province, China; Huzhou Key Laboratory of Translational Medicine, First affiliated Hospital of Huzhou University, Huzhou, Zhejiang Province, China
| | - Jie He
- Department of Hepatology, First affiliated Hospital of Huzhou University, Huzhou, Zhejiang Province, China
| | - Jinling Dong
- Department of Hepatology, First affiliated Hospital of Huzhou University, Huzhou, Zhejiang Province, China
| | - Qinliang Mo
- Department of Hepatopancreatobiliary Surgery, First affiliated Hospital of Huzhou University, Huzhou, Zhejiang Province, China
| | - Yao Wang
- Department of Hepatopancreatobiliary Surgery, First affiliated Hospital of Huzhou University, Huzhou, Zhejiang Province, China
| | - Ying Zhang
- Central Laboratory, First affiliated Hospital of Huzhou University, Huzhou, Zhejiang Province, China; Department of Hepatology, First affiliated Hospital of Huzhou University, Huzhou, Zhejiang Province, China
| | - Hongbin Yu
- Department of General Surgery, First affiliated Hospital of Huzhou University, Huzhou, Zhejiang Province, China
| | - Chengwu Tang
- Huzhou Key Laboratory of Translational Medicine, First affiliated Hospital of Huzhou University, Huzhou, Zhejiang Province, China; Department of Hepatopancreatobiliary Surgery, First affiliated Hospital of Huzhou University, Huzhou, Zhejiang Province, China.
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Jin D, Li C, Chen X, Byerly A, Stover NA, Zhang T, Shao C, Wang Y. Comparative genome analysis of three euplotid protists provides insights into the evolution of nanochromosomes in unicellular eukaryotic organisms. MARINE LIFE SCIENCE & TECHNOLOGY 2023; 5:300-315. [PMID: 37637252 PMCID: PMC10449743 DOI: 10.1007/s42995-023-00175-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Accepted: 04/12/2023] [Indexed: 08/29/2023]
Abstract
One of the most diverse clades of ciliated protozoa, the class Spirotrichea, displays a series of unique characters in terms of eukaryotic macronuclear (MAC) genome, including high fragmentation that produces nanochromosomes. However, the genomic diversity and evolution of nanochromosomes and gene families for spirotrich MAC genomes are poorly understood. In this study, we assemble the MAC genome of a representative euplotid (a new model organism in Spirotrichea) species, Euplotes aediculatus. Our results indicate that: (a) the MAC genome includes 35,465 contigs with a total length of 97.3 Mb and a contig N50 of 3.4 kb, and contains 13,145 complete nanochromosomes and 43,194 predicted genes, with the majority of these nanochromosomes containing tiny introns and harboring only one gene; (b) genomic comparisons between E. aediculatus and other reported spirotrichs indicate that average GC content and genome fragmentation levels exhibit interspecific variation, and chromosome breaking sites (CBSs) might be lost during evolution, resulting in the increase of multi-gene nanochromosome; (c) gene families associated with chitin metabolism and FoxO signaling pathway are expanded in E. aediculatus, suggesting their potential roles in environment adaptation and survival strategies of E. aediculatus; and (d) a programmed ribosomal frameshift (PRF) with a conservative motif 5'-AAATAR-3' tends to occur in longer genes with more exons, and PRF genes play an important role in many cellular regulation processes. Supplementary Information The online version contains supplementary material available at 10.1007/s42995-023-00175-0.
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Affiliation(s)
- Didi Jin
- Laboratory of Protozoological Biodiversity and Evolution in Wetland, College of Life Sciences, Shaanxi Normal University, Xi’an, 710119 China
| | - Chao Li
- Institute of Evolution and Marine Biodiversity, Ocean University of China, Qingdao, 266003 China
| | - Xiao Chen
- Laboratory of Marine Protozoan Biodiversity and Evolution, Marine College, Shandong University, Weihai, 264209 China
| | - Adam Byerly
- Department of Computer Science and Information Systems, Bradley University, Peoria, 61625 USA
| | - Naomi A. Stover
- Department of Biology, Bradley University, Peoria, 61625 USA
| | - Tengteng Zhang
- Laboratory of Protozoological Biodiversity and Evolution in Wetland, College of Life Sciences, Shaanxi Normal University, Xi’an, 710119 China
| | - Chen Shao
- Laboratory of Protozoological Biodiversity and Evolution in Wetland, College of Life Sciences, Shaanxi Normal University, Xi’an, 710119 China
| | - Yurui Wang
- Laboratory of Protozoological Biodiversity and Evolution in Wetland, College of Life Sciences, Shaanxi Normal University, Xi’an, 710119 China
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Single B Cell Gene Co-Expression Networks Implicated in Prognosis, Proliferation, and Therapeutic Responses in Non-Small Cell Lung Cancer Bulk Tumors. Cancers (Basel) 2022; 14:cancers14133123. [PMID: 35804895 PMCID: PMC9265014 DOI: 10.3390/cancers14133123] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Revised: 05/14/2022] [Accepted: 06/23/2022] [Indexed: 02/06/2023] Open
Abstract
Simple Summary This study presents novel insights on dysregulated B cell proliferation networks in non-small cell lung cancer (NSCLC). Within this network, a nine-gene signature demonstrated prognostic and predictive indications in more than 1400 NSCLC patients using their gene and protein expression profiles in bulk tumors. Furthermore, novel therapeutic candidates are identified to improve NSCLC treatment outcomes. Abstract In NSCLC, there is a pressing need for immunotherapy predictive biomarkers. The processes underlying B-cell dysfunction, as well as their prognostic importance in NSCLC, are unknown. Tumor-specific B-cell gene co-expression networks were constructed by comparing the Boolean implication modeling of single-cell RNA sequencing of NSCLC tumor B cells and normal B cells. Proliferation genes were selected from the networks using in vitro CRISPR-Cas9/RNA interfering (RNAi) screening data in more than 92 human NSCLC epithelial cell lines. The prognostic and predictive evaluation was performed using public NSCLC transcriptome and proteome profiles. A B cell proliferation and prognostic gene co-expression network was present only in normal lung B cells and missing in NSCLC tumor B cells. A nine-gene signature was identified from this B cell network that provided accurate prognostic stratification using bulk NSCLC tumor transcriptome (n = 1313) and proteome profiles (n = 103). Multiple genes (HLA-DRA, HLA-DRB1, OAS1, and CD74) differentially expressed in NSCLC B cells, peripheral blood lymphocytes, and tumor T cells had concordant prognostic indications at the mRNA and protein expression levels. The selected genes were associated with drug sensitivity/resistance to 10 commonly used NSCLC therapeutic regimens. Lestaurtinib was discovered as a potential repositioning drug for treating NSCLC.
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Alam M, Ali S, Mohammad T, Hasan GM, Yadav DK, Hassan MI. B Cell Lymphoma 2: A Potential Therapeutic Target for Cancer Therapy. Int J Mol Sci 2021; 22:ijms221910442. [PMID: 34638779 PMCID: PMC8509036 DOI: 10.3390/ijms221910442] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Revised: 09/15/2021] [Accepted: 09/23/2021] [Indexed: 12/13/2022] Open
Abstract
Defects in the apoptosis mechanism stimulate cancer cell growth and survival. B cell lymphoma 2 (Bcl-2) is an anti-apoptotic molecule that plays a central role in apoptosis. Bcl-2 is the founding constituent of the Bcl-2 protein family of apoptosis controllers, the primary apoptosis regulators linked with cancer. Bcl-2 has been identified as being over-expressed in several cancers. Bcl-2 is induced by protein kinases and several signaling molecules which stimulate cancer development. Identifying the important function played by Bcl-2 in cancer progression and development, and treatment made it a target related to therapy for multiple cancers. Among the various strategies that have been proposed to block Bcl-2, BH3-mimetics have appeared as a novel group of compounds thanks to their favorable effects on many cancers within several clinical settings. Because of the fundamental function of Bcl-2 in the regulation of apoptosis, the Bcl-2 protein is a potent target for the development of novel anti-tumor treatments. Bcl-2 inhibitors have been used against several cancers and provide a pre-clinical platform for testing novel therapeutic drugs. Clinical trials of multiple investigational agents targeting Bcl-2 are ongoing. This review discusses the role of Bcl-2 in cancer development; it could be exploited as a potential target for developing novel therapeutic strategies to combat various types of cancers. We further highlight the therapeutic activity of Bcl-2 inhibitors and their implications for the therapeutic management of cancer.
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Affiliation(s)
- Manzar Alam
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, Jamia Nagar, New Delhi 110025, India; (M.A.); (S.A.); (T.M.)
| | - Sabeeha Ali
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, Jamia Nagar, New Delhi 110025, India; (M.A.); (S.A.); (T.M.)
| | - Taj Mohammad
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, Jamia Nagar, New Delhi 110025, India; (M.A.); (S.A.); (T.M.)
| | - Gulam Mustafa Hasan
- Department of Biochemistry, College of Medicine, Prince Sattam Bin Abdulaziz University, Al-Kharj 11942, Saudi Arabia;
| | - Dharmendra Kumar Yadav
- Department of Pharmacy and Gachon Institute of Pharmaceutical Science, College of Pharmacy, Gachon University, Hambakmoeiro 191, Yeonsu-gu, Incheon 21924, Korea
- Correspondence: (D.K.Y.); (M.I.H.)
| | - Md. Imtaiyaz Hassan
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, Jamia Nagar, New Delhi 110025, India; (M.A.); (S.A.); (T.M.)
- Correspondence: (D.K.Y.); (M.I.H.)
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Qiu K, Ma C, Lu L, Wang J, Chen B, Mao H, Wang Y, Wang H. DAPT suppresses proliferation and migration of hepatocellular carcinoma by regulating the extracellular matrix and inhibiting the Hes1/PTEN/AKT/mTOR signaling pathway. J Gastrointest Oncol 2021; 12:1101-1116. [PMID: 34295560 DOI: 10.21037/jgo-21-235] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Accepted: 05/28/2021] [Indexed: 11/06/2022] Open
Abstract
Background The aim of the present study was to investigate the antitumor properties of N-(N-[3,5-difluorophenacetyl]-1-alanyl)-S-phenylglycine t-butyl ester (DAPT) against hepatocellular carcinoma (HCC), as well as the underlying mechanism. Methods Immunohistochemistry and quantitative reverse transcription polymerase chain reaction (qRT-PCR) assay were used to determine the expression of Notch1 in HCC tissues. The expression of Notch1 in 3 HCC cell lines was evaluated by qRT-PCR and Western blot. The proliferation ability of cells was detected by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide and colony formation assays. Flow cytometry and Transwell assay were used to check the apoptosis and migration of HepG2 cells, respectively. Western blot was used to determine the expression level of Notch1, Hes1, Phosphatase and tensin homolog (PTEN), protein kinase B1 (AKT1), phosphorylated AKT1, mammalian target of rapamycin (mTOR), phosphorylated mTOR, intracellular adhesion molecule-1, vascular cell adhesion protein 1, matrix metalloproteinase (MMP)-2, MMP-9, and focal adhesion kinase in cells and tumor tissues. A HepG2 xenograft experiment was conducted to evaluate the in vivo antitumor properties of DAPT. Results Notch1 was found to be significantly upregulated in both HCC tissues and cell lines. DAPT significantly inhibited the proliferation and migration of HepG2 cells in a dose-dependent manner, accompanied by the suppression of Notch1/Hes1 signaling, inactivation of AKT/mTOR signaling, downregulation of MMPs, and decreased expression of adhesion molecules. The activation of Notch1/Hes1 or AKT/mTOR signaling removed the inhibitory effect of DAPT on the proliferation and migration of HepG2 cells, as well as the inhibitory properties of DAPT on the expression of MMPs and adhesion molecules. The antitumor properties and regulatory effect of DAPT against the extracellular matrix (ECM) and Hes1/PTEN/AKT/mTOR signaling were verified by the HepG2 xenograft experiments. Conclusions DAPT could suppress the proliferation and migration of HCC by regulating the ECM and inhibiting the Hes1/PTEN/AKT/mTOR signaling pathway.
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Affiliation(s)
- Kaijie Qiu
- Department of Hepatobiliary and Pancreatic Surgery, Ningbo Medical Center Lihuili Hospital, Ningbo, China
| | - Chenyang Ma
- Department of Hepatobiliary and Pancreatic Surgery, Ningbo Medical Center Lihuili Hospital, Ningbo, China
| | - Lingchao Lu
- Department of Common Surgery, Yuyao Fourth People's Hospital, Ningbo, China
| | - Jie Wang
- Department of Hepatobiliary and Pancreatic Surgery, Ningbo Medical Center Lihuili Hospital, Ningbo, China
| | - Baiwen Chen
- Department of Hepatobiliary and Pancreatic Surgery, Ningbo Medical Center Lihuili Hospital, Ningbo, China
| | - Haixiang Mao
- Department of Hepatobiliary and Pancreatic Surgery, Ningbo Medical Center Lihuili Hospital, Ningbo, China
| | - Yanmin Wang
- Department of operation room, Ningbo Medical Center Lihuili Hospital, Ningbo, China
| | - Haibiao Wang
- Department of Hepatobiliary and Pancreatic Surgery, Ningbo Medical Center Lihuili Hospital, Ningbo, China
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Yu R, Lu Y, Yu R, Xie J, Zhou S. Synergistic Effects of TW-37 and ABT-263 on Renal Cell Carcinoma Cells. Cancer Manag Res 2021; 13:953-963. [PMID: 33568941 PMCID: PMC7868206 DOI: 10.2147/cmar.s265788] [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: 07/06/2020] [Accepted: 01/08/2021] [Indexed: 12/13/2022] Open
Abstract
Background Renal cell carcinoma (RCC) is a common urological system malignancy lack of effective therapeutic options. Upregulation of the Bcl-2 proteins was correlated with poor prognosis of RCC, suggesting that BH-3 mimetics may be a promising treatment option. ABT-263 is a BH3 mimetic that possesses anti-tumor effects. TW-37 is another inhibitor of Bcl-2 family protein with potential anti-tumor activities. However, since their effect as single agent is limited, combination treatment represents a strategy to improve the efficiency. We studied the ABT-263 in combination with TW-37 and analyzed the molecular mechanisms of action in RCC cells. Methods MTT and colony formation assays were used to measure the proliferation of RCC cells. Transwell assay was used to assay the migration and invasion of RCC cells. Cell cycle distribution and apoptosis were measured using the flow cytometry and apoptotic nucleosome assay, respectively. Western blotting was performed to measure the change of proteins. The anti-tumor effects of ABT-263, TW-37 and their combination were also evaluated in vivo. Results Cotreatment of TW-37 and ABT-263 synergistically repressed the proliferation of RCC cells. TW-37 and ABT-263 also synergistically inhibited the migration and invasion of RCC cells It was also showed that TW-37 and ABT-263 synergistically induced cell cycle arrest at the G2/M phase. Furthermore, increased apoptosis was observed after exposure to TW-37 and ABT-263. Mechanism investigation showed that TW-37 and ABT-263 synergistically induced apoptosis via the mitochondrial pathway and relied on the activation of Bax and caspases. Furthermore, ERK signaling pathway activation was detected after treated with TW-37 and ABT-263. Finally, TW-37 and ABT-263 also synergistically repressed the growth of RCC cells in xenograft mice. Conclusion In summary, our data demonstrated that combined treatment with TW-37 and ABT-263 exhibited synergistic RCC cell death and this combination may be applied as an effective therapeutic strategy against RCC.
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Affiliation(s)
- Rui Yu
- Department of Biochemistry and Molecular Biology, Zhejiang Key Laboratory of Pathophysiology, Medical School of Ningbo University, Ningbo, People's Republic of China
| | - Yefen Lu
- Department of Neurology, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui, People's Republic of China
| | - Ren Yu
- Department of Urology, Ningbo Urology and Nephrology Hospital, Ningbo, People's Republic of China
| | - Jianjun Xie
- Suzhou Science & Technology Town Hospital, The Affiliated Suzhou Science & Technology Town Hospital of Nanjing Medical University, Suzhou, People's Republic of China
| | - Shoujun Zhou
- Suzhou Science & Technology Town Hospital, The Affiliated Suzhou Science & Technology Town Hospital of Nanjing Medical University, Suzhou, People's Republic of China
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Cryptotanshinone chemosensitivity potentiation by TW-37 in human oral cancer cell lines by targeting STAT3-Mcl-1 signaling. Cancer Cell Int 2020; 20:405. [PMID: 32863764 PMCID: PMC7448991 DOI: 10.1186/s12935-020-01495-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Accepted: 08/12/2020] [Indexed: 02/07/2023] Open
Abstract
Background Despite being one of the leading cancer types in the world, the diagnosis of oral cancer and its suitable therapeutic options remain limited. This study aims to investigate the single and chemosensitizing effects of TW-37, a BH3 mimetic in oral cancer, on human oral cancer cell lines. Methods We assessed the single and chemosensitizing effects of TW-37 in vitro using trypan blue exclusion assay, Western blotting, DAPI staining, Annexin V–FITC/PI double staining, and quantitative real-time PCR. Mcl-1 overexpression models were established by transforming vector and transient transfection was performed to test for apoptosis Results TW-37 enhanced the cytotoxicity of human oral cancer cell lines by inducing caspase-dependent apoptosis, which correlates with the reduction of the myeloid cell leukemia-1 (Mcl-1) expression via transcriptional and post-translational regulation. The ectopic expression of Mcl-1 partially attenuated the apoptosis-inducing capacity of TW-37 in human oral cancer cell lines. Besides, TW-37 decreased the phosphorylation of signal transducer and activator of transcription 3 (STAT3) at Tyr705 and nuclear translocation in human oral cancer cell lines at the early time points. Furthermore, TW-37 potentiated chemosusceptibility of cryptotanshinone in human oral cancer cell lines by suppressing STAT3–Mcl-1 signaling compared with either TW-37 or cryptotanshinone alone, resulting in potent apoptosis. Conclusions This study not only unravels the single and chemosensitizing effects of TW-37 for treatment of human oral cancer but also highlights the likelihood of TW-37 as a good therapeutic strategy to enhance the prognosis of patients with oral cancer in the future.
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Sun J, Russell CC, Scarlett CJ, McCluskey A. Small molecule inhibitors in pancreatic cancer. RSC Med Chem 2020; 11:164-183. [PMID: 33479626 PMCID: PMC7433757 DOI: 10.1039/c9md00447e] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Accepted: 12/09/2019] [Indexed: 12/17/2022] Open
Abstract
Pancreatic cancer (PC), with a 5 year survival of <7%, is one of the most fatal of all human cancers. The highly aggressive and metastatic character of this disease poses a challenge that current therapies are failing, despite significant efforts, to meet. This review examines the current status of the 35 small molecule inhibitors targeting pancreatic cancer in clinical trials and the >50 currently under investigation. These compounds inhibit biological targets spanning protein kinases, STAT3, BET, HDACs and Bcl-2 family proteins. Unsurprisingly, protein kinase inhibitors are overrepresented. Some trials show promise; a phase I combination trial of vorinostat 11 and capecitabine 17 gave a median overall survival (MoS) of 13 months and a phase II study of pazopanib 15 showed a MoS of 25 months. The current standard of care for metastatic pancreatic ductal adenocarcinoma, fluorouracil/folic acid (5-FU, Adrucil®), and gemcitabine (GEMZAR®) afforded a MoS of 23 and 23.6 months (EPAC-3 study), respectively. In patients who can tolerate the FOLFIRINOX regime, this is becoming the standard of treatment with a MoS of 11.1 months. Clinical study progress has been slow with limited improvement in patient survival relative to gemcitabine 1 monotherapy. A major cause of low PC survival is the late stage of diagnosis, occurring in patients who consider typical early stage warning signs of aches and pains normal. The selection of patients with specific disease phenotypes, the use of improved efficient drug combinations, the identification of biomarkers to specific cancer subtypes and more effective designs of investigation have improved outcomes. To move beyond the current dire condition and paucity of PC treatment options, determination of the best regimes and new treatment options is a challenge that must be met. The reasons for poor PC prognosis have remained largely unchanged for 20 years. This is arguably a consequence of significant changes in the drug discovery landscape, and the increasing pressure on academia to deliver short term 'media' friendly short-term news 'bites'. PC research sits at a pivotal point. Perhaps the greatest challenge is enacting a culture change that recognises that major breakthroughs are a result of blue sky, truly innovative and curiosity driven research.
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Affiliation(s)
- Jufeng Sun
- Chemistry , School of Environmental & Life Sciences , The University of Newcastle , Newcastle , Callaghan , NSW 2308 , Australia . ; ; Tel: +61 249216486
- Medicinal Chemistry , School of Pharmacy , Binzhou Medical University , Yantai , 264003 , China
| | - Cecilia C Russell
- Chemistry , School of Environmental & Life Sciences , The University of Newcastle , Newcastle , Callaghan , NSW 2308 , Australia . ; ; Tel: +61 249216486
| | - Christopher J Scarlett
- Applied Sciences , School of Environmental & Life Sciences , The University of Newcastle , Ourimbah NSW 2258 , Australia
| | - Adam McCluskey
- Chemistry , School of Environmental & Life Sciences , The University of Newcastle , Newcastle , Callaghan , NSW 2308 , Australia . ; ; Tel: +61 249216486
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Ahn CH, Lee WW, Jung YC, Shin JA, Hong KO, Choi S, Swarup N, Kim J, Ahn MH, Jung M, Cho SD, Jin B. Antitumor effect of TW-37, a BH3 mimetic in human oral cancer. Lab Anim Res 2019; 35:27. [PMID: 32257914 PMCID: PMC7081630 DOI: 10.1186/s42826-019-0028-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Accepted: 11/19/2019] [Indexed: 12/15/2022] Open
Abstract
TW-37 is a small molecule B cell lymphoma-2 (Bcl-2) homology 3 mimetic with potential anticancer activities. However, the in vivo anti-cancer effect of TW-37 in human oral cancer has not been properly studied yet. Here, we attempted to confirm antitumor activity of TW37 in human oral cancer. TW-37 significantly inhibited cell proliferation and increased the number of dead cells in MC-3 and HSC-3 human oral cancer cell lines. TW-37 enhanced apoptosis of both cell lines evidenced by annexin V/propidium iodide double staining, sub-G1 population analysis and the detection of cleaved poly (ADP-ribose) polymerase and caspase-3. In addition, TW-37 markedly downregulated the expression of Bcl-2 protein, while not affecting Bcl-xL or myeloid cell leukemia-1. In vivo, TW-37 inhibited tumor growth in a nude mice xenograft model without any significant liver and kidney toxicities. Collectively, these data reveal that TW-37 may be a promising small molecule to inhibit human oral cancer.
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Affiliation(s)
- Chi-Hyun Ahn
- 1Department of Oral Pathology, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, 03080 Republic of Korea
| | - Won Woo Lee
- 2Laboratory Animal Center, CHA University, CHA Biocomplex, Sampyeong-dong, Seongnam, 13488 Republic of Korea
| | - Yun Chan Jung
- Chaon, 301-3, 240, Pangyoyeok-ro, Bundang-gu, Seongnam, 13493 Republic of Korea
| | - Ji-Ae Shin
- 1Department of Oral Pathology, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, 03080 Republic of Korea
| | - Kyoung-Ok Hong
- 1Department of Oral Pathology, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, 03080 Republic of Korea
| | - Sujung Choi
- 1Department of Oral Pathology, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, 03080 Republic of Korea
| | - Neeti Swarup
- 1Department of Oral Pathology, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, 03080 Republic of Korea
| | - Jihoon Kim
- 1Department of Oral Pathology, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, 03080 Republic of Korea
| | - Min-Hye Ahn
- 1Department of Oral Pathology, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, 03080 Republic of Korea
| | - Minjung Jung
- 1Department of Oral Pathology, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, 03080 Republic of Korea
| | - Sung-Dae Cho
- 1Department of Oral Pathology, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, 03080 Republic of Korea
| | - Bohwan Jin
- 2Laboratory Animal Center, CHA University, CHA Biocomplex, Sampyeong-dong, Seongnam, 13488 Republic of Korea
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Heme Oxygenase-1 is a Key Molecule Underlying Differential Response of TW-37-Induced Apoptosis in Human Mucoepidermoid Carcinoma Cells. Molecules 2019; 24:molecules24091700. [PMID: 31052354 PMCID: PMC6539960 DOI: 10.3390/molecules24091700] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Revised: 04/22/2019] [Accepted: 04/27/2019] [Indexed: 12/25/2022] Open
Abstract
TW-37 is a small-molecule inhibitor of Bcl-2 family proteins, which can induce anti-cancer activities in various types of cancer. In the current study, we investigated the potential molecular mechanism underlying the differential response to TW-37-induced apoptosis in two human mucoepidermoid carcinoma (MEC) cell lines. The differential response and underlying molecular mechanism of human MEC cells to TW-37 was evaluated by trypan blue exclusion assay, western blotting, 4’, 6-diamidino-2-phenylindole staining, annexin V/propidium iodide double staining, analysis of the sub-G1 population, human apoptosis array, and measurements of intracellular reactive oxygen species (ROS). TW-37 decreased cell viability and induced apoptosis in YD-15 cells, but not in MC3 cells. Proteome profiling using a human apoptosis array revealed four candidate proteins and of these, heme oxygenase-1 (HO-1) was mainly related to the differential response to TW-37 of YD-15 and MC3 cells. TW-37 also led to a significant increase in intracellular levels of ROS in YD-15 cells, which is associated with apoptosis induction. The ectopic expression of HO-1 recovered YD-15 cells from TW-37-induced apoptosis by reducing intracellular levels of ROS. The expression of HO-1 was reduced through both transcriptional and post-translational modification during TW-37-mediated apoptosis. We conclude that HO-1 is a potential indicator to estimate response to TW37-induced apoptosis in human MEC.
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Klenke S, Akdeli N, Stelmach P, Heukamp L, Schulte JH, Bachmann HS. The small molecule Bcl-2/Mcl-1 inhibitor TW-37 shows single-agent cytotoxicity in neuroblastoma cell lines. BMC Cancer 2019; 19:243. [PMID: 30885150 PMCID: PMC6423774 DOI: 10.1186/s12885-019-5439-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Accepted: 03/06/2019] [Indexed: 11/22/2022] Open
Abstract
Background High-risk neuroblastoma with N-Myc amplification remains a therapeutic challenge in paediatric oncology. Antagonism of pro-death Bcl-2 homology (BH) proteins to pro-survival BH members such as Mcl-1 and Bcl-2 has become a treatment approach, but previous studies suggest that a combined inhibition of Bcl-2 and Mcl-1 is necessary. TW-37 inhibits Mcl-1 and Bcl-2 with almost the same affinity. However, single-agent cytotoxicity of TW-37 in neuroblastoma cell lines has not been investigated. Methods Cell viability, apoptosis, proliferation and changes in growth properties were determined in SKNAS, IMR-5, SY5Y and Kelly cells after treatment with TW-37. After transfection with Mcl-1 or Bcl-2 siRNA, apoptosis and proliferation were investigated in Kelly cells. Mice with Kelly cell line xenografts were treated with TW-37 and tumor growth, survival and apoptosis were determined. Results Cell lines with N-Myc amplification were more sensitive to TW-37 treatment, IC50 values for IMR-5 and Kelly cells being 0.28 μM and 0.22 μM, compared to SY5Y cells and SKNAS cells (IC50 0.96 μM and 0.83 μM). Treatment with TW-37 resulted in increased apoptosis and reduced proliferation rates, especially in IMR5 and Kelly cells. Bcl-2 as well as Mcl-1 knockdown induced apoptosis in Kelly cells. TW-37 led to a decrease in tumor growth and a favorable survival (p = 0.0379) in a Kelly neuroblastoma xenografts mouse model. Conclusion TW-37 has strong single-agent cytotoxicity in vitro and in vivo. Therefore, combined inhibition of Bcl-2/Mcl-1 by TW-37 in N-Myc amplified neuroblastoma may represent an interesting therapeutic strategy. Electronic supplementary material The online version of this article (10.1186/s12885-019-5439-1) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Stefanie Klenke
- Institute of Pharmacogenetics, University Hospital Essen, Essen, Germany.,Department of Anesthesiology and Intensive Care, University Hospital Essen, Essen, Germany
| | - Neval Akdeli
- Institute of Pharmacogenetics, University Hospital Essen, Essen, Germany
| | - Patrick Stelmach
- Institute of Pharmacogenetics, University Hospital Essen, Essen, Germany
| | - Lukas Heukamp
- NEO New Oncology AG, Cologne, Germany.,Institute of Hematopathology Hamburg, Hamburg, Germany
| | - Johannes H Schulte
- Department of Pediatric Oncology and Hematology, Charité Berlin, Berlin, Germany
| | - Hagen S Bachmann
- Institute of Pharmacogenetics, University Hospital Essen, Essen, Germany. .,Institute of Pharmacology and Toxicology, Center for Biomedical Education and Research (ZBAF), School of Medicine, Faculty of Health, Witten/Herdecke University, Stockumer Str 10, 58453, Witten, Germany.
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12
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Russo M, Milito A, Spagnuolo C, Carbone V, Rosén A, Minasi P, Lauria F, Russo GL. CK2 and PI3K are direct molecular targets of quercetin in chronic lymphocytic leukaemia. Oncotarget 2018; 8:42571-42587. [PMID: 28489572 PMCID: PMC5522089 DOI: 10.18632/oncotarget.17246] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Accepted: 04/05/2017] [Indexed: 11/25/2022] Open
Abstract
Despite the encouraging results of the innovative therapeutic treatments, complete remission is uncommon in patients affected by chronic lymphocytic leukaemia, which remains an essentially incurable disease. Recently, clinical trials based on BH3-mimetic drugs showed positive outcomes in subjects with poor prognostic features. However, resistance to treatments occurs in a significant number of patients. We previously reported that the multi-kinase inhibitor quercetin, a natural flavonol, restores sensitivity to ABT-737, a BH3-mimetic compound, in both leukemic cell lines and B-cells isolated from patients. To identify the molecular target of quercetin, we employed a new cell line, HG3, obtained by immortalization of B-cells from a chronic lymphocytic leukaemia patient at the later stage of disease. We confirmed that quercetin in association with ABT-737 synergistically enhances apoptosis in HG3 (combination index < 1 for all fractions affected). We also reported that the cellular uptake of quercetin is extremely rapid, with an intracellular concentration of about 38.5 ng/106 cells, after treatment with 25 μM for 5 min. We demonstrated that the activity of protein kinase CK2, which positively triggers PI3K/Akt pathway by inactivating PTEN phosphatase, is inhibited by quercetin immediately after its addition to HG3 cells (0–2 min). PI3K activity was also inhibited by quercetin within 60 min from the treatment. The combined inhibition of CK2 and PI3K kinase activities by quercetin restored ABT-737 sensitivity and increased lethality in human leukemia cells.
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Affiliation(s)
- Maria Russo
- Institute of Food Sciences, National Research Council, Avellino, Italy
| | - Alfonsina Milito
- Institute of Food Sciences, National Research Council, Avellino, Italy.,Current address: Stazione Zoologica "Anton Dohrn", Villa Comunale, Napoli, Italy
| | - Carmela Spagnuolo
- Institute of Food Sciences, National Research Council, Avellino, Italy
| | - Virginia Carbone
- Institute of Food Sciences, National Research Council, Avellino, Italy
| | - Anders Rosén
- Department of Clinical and Experimental Medicine, Division of Cell Biology, Linköping University, Linköping, Sweden
| | - Paola Minasi
- Institute of Food Sciences, National Research Council, Avellino, Italy
| | - Fabio Lauria
- Institute of Food Sciences, National Research Council, Avellino, Italy
| | - Gian Luigi Russo
- Institute of Food Sciences, National Research Council, Avellino, Italy
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13
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Effect of TW37 on the growth of H1975 EGFR‑TKI‑resistant lung cancer cells and its underlying mechanisms. Mol Med Rep 2017; 17:2509-2514. [PMID: 29207200 DOI: 10.3892/mmr.2017.8181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Accepted: 04/05/2017] [Indexed: 11/05/2022] Open
Abstract
Previous studies have suggested that the B‑cell lymphoma 2 (Bcl‑2) inhibitor, TW37, may induce apoptosis of the non‑small cell lung cancer cell line, H1975/epidermal growth factor receptor‑tyrosine kinase inhibitor (EGFR‑TKI), which exhibits secondary resistance to EGFR‑TKI. However, the effects of TW37 on H1975/EGFR‑TKI cells remain unclear. The aim of the present study was to investigate the effects of TW37 on the growth of H1975/EGFR‑TKI cells and explore the underlying mechanisms. An in vitro study was performed, whereby H1975/EGFR‑TKI cells were treated with serially increasing concentrations of TW37. MTT, flow cytometry, migration and transwell invasion assays were preformed to investigate the proliferation, apoptosis, migration and invasion of H1975/EGFR‑TKI cells, respectively. In addition, reverse transcription‑polymerase chain reaction and western blot analyses were performed to detect the mRNA and protein expression levels of apoptosis‑associated factors, respectively. An enzyme‑linked immunosorbent assay was performed to detect phosphatidylinositol [3,4,5] tris‑phosphate (PIP3) expression. The results suggested that the mRNA and protein expression levels of Bcl‑2 were significantly decreased in TW37‑treated cells when compared with the untreated control group. Following treatment with TW37, the proliferation, migration and invasion ability of H1975/EGFR‑TKI cells decreased in a dose‑dependent manner, while the percentage of apoptotic cells increased. In addition, the results demonstrated that TW37 reduced the expression of PIP3 and the phosphorylation of AKT serine/threonine kinase 1 (AKT) in H1975/EGFR‑TKI cells in a dose‑dependent manner. In conclusion, TW37 inhibited H1975/EGFR‑TKI cell growth and induced cell apoptosis potentially via suppression of AKT signaling pathway activation.
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14
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Recent advances in gossypol derivatives and analogs: a chemistry and biology view. Future Med Chem 2017; 9:1243-1275. [PMID: 28722469 DOI: 10.4155/fmc-2017-0046] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Gossypol as a natural occurring polyphenol has been studied in a wide range of therapeutic contexts for a long time. The chemical modifications on gossypol were limited due to the unique chemical properties of polyphenols. The design and synthesis of gossypol derivatives and the exploration of their biological activities are the interest of the synthetic chemists, medicinal chemists and pharmacologists. Thus, the progress of diverse gossypol derivatives and analogs' synthesis, biological activities, mechanism elucidation and drug discovery based on gossypol scaffold is summarized.
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15
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Lu Y, Huang H, Yang H, Chen D, Wu S, Jiang Z, Wang R. Small molecule inhibitor TW-37 is tolerable and synergistic with chemotherapy in nasopharyngeal carcinoma. Cell Cycle 2017; 16:1376-1383. [PMID: 28696828 DOI: 10.1080/15384101.2017.1329066] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Chemotherapy is a crucial adjuvant therapy of advanced nasopharyngeal carcinoma (NPC). However, enhancing sensitivity and tolerance of chemotherapeutics in NPC treatment have been challenging. Both Bcl-2 and Mcl-1, 2 pro-survival proteins of Bcl-2 family, play essential roles on the chemotherapy tolerance of numerous cancers. In the present study, we explored the influences of TW-37, a small molecule inhibitor of Bcl-2 and Mcl-1, on the efficiency of chemotherapy for NPC. Oncomine cancer database shows that NPC tissues have higher expression of Bcl-2 and Mcl-1 than those of normal nasopharyngeal epithelial (NPE) tissues. And our results reveal that chemotherapeutics, Cisplatin (CDDP) and 5-Fluoracil (5-FU), result in the greater decrease of protein level of Bcl-2 and Mcl-1 in NPC cells than those in NPE cells. TW-37 does not have significant impact on the chemotherapeutics-treated NPE cell viability at a dosage that efficiently reduces chemotherapeutics-treated NPC cell viability. Moreover, impacts of TW-37 on the cell viability of chemotherapeutics-treated NPC cells are dependent on the expression of Bcl-2 and Mcl-1 in NPC cells. Further explorations suggest that TW-37 prominently promotes apoptosis in NPC cells under chemotherapeutics treatments but not in NPE cells. Meanwhile, TW-37 also remarkably reduces colony formation ability of chemotherapeutics-treated NPC cells. Importantly, in vivo models, TW-37 observably increases chemosensitivity of NPC tumors but has not markedly influence on the normal tissues in mice. In conclusion, our results point to TW-37 as a promising ancillary drug for the chemotherapy of NPC.
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Affiliation(s)
- Ying Lu
- a Department of Radiation Oncology , First Affiliated Hospital of Guangxi Medical University , Nanning , China.,b Department of Oncology , Fourth Affiliated Hospital of Guangxi Medical University , Liuzhou , China
| | - Haixin Huang
- b Department of Oncology , Fourth Affiliated Hospital of Guangxi Medical University , Liuzhou , China
| | - Hui Yang
- b Department of Oncology , Fourth Affiliated Hospital of Guangxi Medical University , Liuzhou , China
| | - Dagui Chen
- b Department of Oncology , Fourth Affiliated Hospital of Guangxi Medical University , Liuzhou , China
| | - Sibei Wu
- b Department of Oncology , Fourth Affiliated Hospital of Guangxi Medical University , Liuzhou , China
| | - Zhou Jiang
- b Department of Oncology , Fourth Affiliated Hospital of Guangxi Medical University , Liuzhou , China
| | - Rensheng Wang
- a Department of Radiation Oncology , First Affiliated Hospital of Guangxi Medical University , Nanning , China
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16
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Gao J, Long B, Wang Z. Role of Notch signaling pathway in pancreatic cancer. Am J Cancer Res 2017; 7:173-186. [PMID: 28337369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Accepted: 10/12/2016] [Indexed: 09/28/2022] Open
Abstract
Pancreatic cancer (PC) is one of the highly aggressive malignancies in the United States. It has been shown that multiple signaling pathways are involved in the pathogenesis of PC, such as JNK, PI3K/AKT, Rho GTPase, Hedgehog (Hh) and Skp2. In recent years, accumulated evidence has demonstrated that Notch signaling pathway plays critical roles in the development and progression of PC. Therefore, in this review we discuss the recent literature regarding the function and regulation of Notch in the pathogenesis of PC. Moreover, we describe that Notch signaling pathway could be down-regulated by its inhibitors or natural compounds, which could be a novel approach for the treatment of PC patients.
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Affiliation(s)
- Jiankun Gao
- Sichuan College of Tranditional Chinese Medicine Mianyang, Sichuan, China
| | - Bo Long
- Department of Infectious Diseases, Mianyang 404 Hospital Mianyang, Sichuan, China
| | - Zhiwei Wang
- The Cyrus Tang Hematology Center, Jiangsu Institute of Hematology, The First Affiliated Hospital, Soochow UniversitySuzhou 215123, China; Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical SchoolMA 02215, USA
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17
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Obatoclax, a Pan-BCL-2 Inhibitor, Targets Cyclin D1 for Degradation to Induce Antiproliferation in Human Colorectal Carcinoma Cells. Int J Mol Sci 2016; 18:ijms18010044. [PMID: 28035994 PMCID: PMC5297679 DOI: 10.3390/ijms18010044] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Revised: 12/19/2016] [Accepted: 12/21/2016] [Indexed: 12/20/2022] Open
Abstract
Colorectal cancer is the third most common cancer worldwide. Aberrant overexpression of antiapoptotic BCL-2 (B-cell lymphoma 2) family proteins is closely linked to tumorigenesis and poor prognosis in colorectal cancer. Obatoclax is an inhibitor targeting all antiapoptotic BCL-2 proteins. A previous study has described the antiproliferative action of obatoclax in one human colorectal cancer cell line without elucidating the underlying mechanisms. We herein reported that, in a panel of human colorectal cancer cell lines, obatoclax inhibits cell proliferation, suppresses clonogenicity, and induces G1-phase cell cycle arrest, along with cyclin D1 downregulation. Notably, ectopic cyclin D1 overexpression abrogated clonogenicity suppression but also G1-phase arrest elicited by obatoclax. Mechanistically, pre-treatment with the proteasome inhibitor MG-132 restored cyclin D1 levels in all obatoclax-treated cell lines. Cycloheximide chase analyses further revealed an evident reduction in the half-life of cyclin D1 protein by obatoclax, confirming that obatoclax downregulates cyclin D1 through induction of cyclin D1 proteasomal degradation. Lastly, threonine 286 phosphorylation of cyclin D1, which is essential for initiating cyclin D1 proteasomal degradation, was induced by obatoclax in one cell line but not others. Collectively, we reveal a novel anticancer mechanism of obatoclax by validating that obatoclax targets cyclin D1 for proteasomal degradation to downregulate cyclin D1 for inducing antiproliferation.
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18
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Iyer D, Vartak SV, Mishra A, Goldsmith G, Kumar S, Srivastava M, Hegde M, Gopalakrishnan V, Glenn M, Velusamy M, Choudhary B, Kalakonda N, Karki SS, Surolia A, Raghavan SC. Identification of a novel BCL2-specific inhibitor that binds predominantly to the BH1 domain. FEBS J 2016; 283:3408-37. [DOI: 10.1111/febs.13815] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Revised: 07/15/2016] [Accepted: 07/19/2016] [Indexed: 12/19/2022]
Affiliation(s)
- Divyaanka Iyer
- Department of Biochemistry; Indian Institute of Science; Bangalore India
| | - Supriya V. Vartak
- Department of Biochemistry; Indian Institute of Science; Bangalore India
| | - Archita Mishra
- Molecular Biophysics Unit; Indian Institute of Science; Bangalore India
| | - Gunaseelan Goldsmith
- Institute of Bioinformatics and Applied Biotechnology, Electronics City; Bangalore India
| | - Sujeet Kumar
- Department of Pharmaceutical Chemistry; KLE University's College of Pharmacy; Bangalore India
| | - Mrinal Srivastava
- Department of Biochemistry; Indian Institute of Science; Bangalore India
| | - Mahesh Hegde
- Department of Biochemistry; Indian Institute of Science; Bangalore India
| | - Vidya Gopalakrishnan
- Department of Biochemistry; Indian Institute of Science; Bangalore India
- Institute of Bioinformatics and Applied Biotechnology, Electronics City; Bangalore India
| | - Mark Glenn
- Haematology; Department of Molecular and Clinical Cancer Medicine University of Liverpool; UK
| | - Mahesh Velusamy
- Institute of Bioinformatics and Applied Biotechnology, Electronics City; Bangalore India
| | - Bibha Choudhary
- Institute of Bioinformatics and Applied Biotechnology, Electronics City; Bangalore India
| | - Nagesh Kalakonda
- Haematology; Department of Molecular and Clinical Cancer Medicine University of Liverpool; UK
| | - Subhas S. Karki
- Department of Pharmaceutical Chemistry; KLE University's College of Pharmacy; Bangalore India
| | - Avadhesha Surolia
- Molecular Biophysics Unit; Indian Institute of Science; Bangalore India
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19
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Liu TE, Wang S, Zhang L, Guo L, Yu Z, Chen C, Zheng J. Growth hormone treatment of premature ovarian failure in a mouse model via stimulation of the Notch-1 signaling pathway. Exp Ther Med 2016; 12:215-221. [PMID: 27347041 PMCID: PMC4906989 DOI: 10.3892/etm.2016.3326] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Accepted: 03/03/2016] [Indexed: 12/27/2022] Open
Abstract
Premature ovarian failure (POF) is a condition affecting 1% of women in the general population, causing amenorrhea, hypergonadotropism and hypoestrogenism before the age of 40. Currently, POF cannot be reversed and, although treatments are available, there is an urgent need for improved treatment strategies. Growth hormone (GH) is a pleiotropic hormone that affects a broad spectrum of physiological functions, from carbohydrate and lipid metabolism to the immune response. GH has previously been used to treat POF in non-transgenic preclinical trials, but the biochemical mechanism underlying these effects are unclear. In the present study, a mouse model of POF was generated using cyclophosphamide. Treatment of POF mice with recombinant mouse growth hormone (rmGH) was revealed to markedly reduce POF histopathology in ovarian tissue, relieve ovarian granulosa cell injury, reduce the number of atretic follicles and significantly increase the number of mature oocytes. Furthermore, an enzyme-linked immunosorbent assay revealed that plasma estradiol levels increased and plasma follicle stimulating hormone levels decreased with time in a group of mice treated with a medium dose of rmGH (0.8 mg/kg) when compared with the POF model group (P<0.05). In addition, reverse transcription-quantitative polymerase chain reaction and immunohistochemical analysis demonstrated elevated levels of Notch-1 signaling pathway factors (Notch1, CBF1, and HES1) in wild-type mice and those treated with medium and high doses of rmGH, but not in those treated with low doses of rmGH. In conclusion, GH may promote ovarian tissue repair, estrogen release and oocyte maturation via activation of the Notch-1 signaling pathway in ovarian tissue.
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Affiliation(s)
- T E Liu
- Department of Gynecology, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200031, P.R. China; Shanghai Geriatric Institute of Chinese Medicine, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200031, P.R. China
| | - Suwei Wang
- Shanghai Geriatric Institute of Chinese Medicine, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200031, P.R. China
| | - Lina Zhang
- Department of Gynecology, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200031, P.R. China
| | - Lihe Guo
- Institute of Biochemistry and Cell Biology, Shanghai Institute for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, P.R. China
| | - Zhihua Yu
- Shanghai Geriatric Institute of Chinese Medicine, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200031, P.R. China
| | - Chuan Chen
- Shanghai Geriatric Institute of Chinese Medicine, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200031, P.R. China
| | - Jin Zheng
- Department of Gynecology, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200031, P.R. China
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20
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Zhang P, Hong H, Sun X, Jiang H, Ma S, Zhao S, Zhang M, Wang Z, Jiang C, Liu H. MicroRNA-10b regulates epithelial-mesenchymal transition by modulating KLF4/Notch1/E-cadherin in cisplatin-resistant nasopharyngeal carcinoma cells. Am J Cancer Res 2016; 6:141-156. [PMID: 27186392 PMCID: PMC4859649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Accepted: 12/21/2015] [Indexed: 06/05/2023] Open
Abstract
Epithelial-mesenchymal transition (EMT) is an initiating event in tumor cell invasion and metastasis that contributes to therapeutic resistance to compounds including cisplatin. MicroRNAs (miRNAs) have been associated with EMT as well as resistance to standard therapies. However, the underlying mechanisms by which miRNAs control the development of resistance to cisplatin (DDP), and the accompanying EMT-like properties are required to elucidate. Here we show that microRNA-10b (miR-10b) is up-regulated in HNE1/DDP cells, and inhibition of miR-10b expression reversed the EMT phenotype. However, over-expression of miR-10b was able to promote the acquisition of an EMT phenotype in HNE1 cells. Additionally, we identified that miR-10b expression inversely correlates with KLF4, which then controls expression of Notch1. Knock-down of Notch1 inhibited cell migration, invasion, and reversed EMT in HNE1/DDP cells, which was dependent on miR-10b. In summary, our results reveal that miR-10b regulates EMT by modulating KLF4/Notch1/E-cadherin expression, which promotes invasion and migration of nasal pharyngeal carcinoma cells.
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Affiliation(s)
- Pei Zhang
- Faculty of Pharmacy, Bengbu Medical College, Anhui Engineering Technology Research Center of Biochemical PharmaceuticalsBengbu 233030, Anhui, P. R. China
| | - Haiyu Hong
- Department of Otolaryngology, The Fifth Affiliated Hospital of Sun Yat-sen UniversityZhuhai 519000, China
| | - Xiaojin Sun
- Faculty of Pharmacy, Bengbu Medical College, Anhui Engineering Technology Research Center of Biochemical PharmaceuticalsBengbu 233030, Anhui, P. R. China
| | - Hao Jiang
- Department of Radiotherapy, The First Affiliated Hospital of Bengbu Medical CollegeNo 287, Chang-Huai Road, Bengbu 233000, Anhui, P. R. China
| | - Shiyin Ma
- Department of ENT, The First Affiliated Hospital of Bengbu Medical CollegeNo 287, Chang-Huai Road, Bengbu 233000, Anhui, P. R. China
| | - Surong Zhao
- Faculty of Pharmacy, Bengbu Medical College, Anhui Engineering Technology Research Center of Biochemical PharmaceuticalsBengbu 233030, Anhui, P. R. China
| | - Mengxiao Zhang
- Faculty of Pharmacy, Bengbu Medical College, Anhui Engineering Technology Research Center of Biochemical PharmaceuticalsBengbu 233030, Anhui, P. R. China
| | - Zhiwei Wang
- Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical SchoolBoston, MA 02215, USA
- The Cyrus Tang Hematology Center and Collaborative Innovation Center of Hematology, Jiangsu Institute of Hematology, The First Affiliated Hospital, Soochow UniversitySuzhou, China
| | - Chenchen Jiang
- Faculty of Pharmacy, Bengbu Medical College, Anhui Engineering Technology Research Center of Biochemical PharmaceuticalsBengbu 233030, Anhui, P. R. China
- Priority Research Center for Cancer Research, University of NewcastleNewcastle, NSW 2308, Australia
| | - Hao Liu
- Faculty of Pharmacy, Bengbu Medical College, Anhui Engineering Technology Research Center of Biochemical PharmaceuticalsBengbu 233030, Anhui, P. R. China
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Qingyihuaji Formula Inhibits Pancreatic Cancer and Prolongs Survival by Downregulating Hes-1 and Hey-1. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2015; 2015:145016. [PMID: 26783407 PMCID: PMC4691523 DOI: 10.1155/2015/145016] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Revised: 10/28/2015] [Accepted: 11/26/2015] [Indexed: 12/12/2022]
Abstract
The dire prognosis of pancreatic cancer has not markedly improved during past decades. The present study was carried out to explore the effect of Qingyihuaji formula (QYHJ) on inhibiting pancreatic cancer and prolonging survival in related Notch signaling pathway. Proliferation of pancreatic cancer cells (SW1990 and PANC-1) was detected by MTT assay at 24, 48, and 72 h with exposure to various concentrations (0.08-50 mg/mL) of QYHJ water extract. Pancreatic tumor models of nude mice were divided into three groups randomly (control, QYHJ, and gemcitabine). mRNA and protein expression of Notch target genes (Hes-1, Hey-1, Hey-2, and Hey-L) in dissected tumor tissue were detected. Results showed that proliferation of SW1990 cells and PANC-1 cells was inhibited by QYHJ water extract in a dose-dependent and time-dependent manner. QYHJ effectively inhibited tumor growth and prolonged survival time in nude mice. Expression of both Hes-1 and Hey-1 was decreased significantly in QYHJ group, suggesting that Hes-1 and Hey-1 in Notch signaling pathway might be potential targets for QYHJ treatment. This research could help explain the clinical effectiveness of QYHJ and may provide advanced pancreatic cancer patients with a new therapeutic option.
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22
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Mohammad RM, Muqbil I, Lowe L, Yedjou C, Hsu HY, Lin LT, Siegelin MD, Fimognari C, Kumar NB, Dou QP, Yang H, Samadi AK, Russo GL, Spagnuolo C, Ray SK, Chakrabarti M, Morre JD, Coley HM, Honoki K, Fujii H, Georgakilas AG, Amedei A, Niccolai E, Amin A, Ashraf SS, Helferich WG, Yang X, Boosani CS, Guha G, Bhakta D, Ciriolo MR, Aquilano K, Chen S, Mohammed SI, Keith WN, Bilsland A, Halicka D, Nowsheen S, Azmi AS. Broad targeting of resistance to apoptosis in cancer. Semin Cancer Biol 2015; 35 Suppl:S78-S103. [PMID: 25936818 PMCID: PMC4720504 DOI: 10.1016/j.semcancer.2015.03.001] [Citation(s) in RCA: 496] [Impact Index Per Article: 55.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2014] [Revised: 03/04/2015] [Accepted: 03/04/2015] [Indexed: 12/15/2022]
Abstract
Apoptosis or programmed cell death is natural way of removing aged cells from the body. Most of the anti-cancer therapies trigger apoptosis induction and related cell death networks to eliminate malignant cells. However, in cancer, de-regulated apoptotic signaling, particularly the activation of an anti-apoptotic systems, allows cancer cells to escape this program leading to uncontrolled proliferation resulting in tumor survival, therapeutic resistance and recurrence of cancer. This resistance is a complicated phenomenon that emanates from the interactions of various molecules and signaling pathways. In this comprehensive review we discuss the various factors contributing to apoptosis resistance in cancers. The key resistance targets that are discussed include (1) Bcl-2 and Mcl-1 proteins; (2) autophagy processes; (3) necrosis and necroptosis; (4) heat shock protein signaling; (5) the proteasome pathway; (6) epigenetic mechanisms; and (7) aberrant nuclear export signaling. The shortcomings of current therapeutic modalities are highlighted and a broad spectrum strategy using approaches including (a) gossypol; (b) epigallocatechin-3-gallate; (c) UMI-77 (d) triptolide and (e) selinexor that can be used to overcome cell death resistance is presented. This review provides a roadmap for the design of successful anti-cancer strategies that overcome resistance to apoptosis for better therapeutic outcome in patients with cancer.
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Affiliation(s)
- Ramzi M Mohammad
- Department of Oncology, Karmanos Cancer Institute, Wayne State University, Detroit, MI, United States; Interim translational Research Institute, Hamad Medical Corporation, Doha, Qatar.
| | - Irfana Muqbil
- Department of Oncology, Karmanos Cancer Institute, Wayne State University, Detroit, MI, United States
| | - Leroy Lowe
- Getting to Know Cancer, Truro, Nova Scotia, Canada
| | - Clement Yedjou
- C-SET, [Jackson, #229] State University, Jackson, MS, United States
| | - Hsue-Yin Hsu
- Department of Life Sciences, Tzu-Chi University, Hualien, Taiwan
| | - Liang-Tzung Lin
- Department of Microbiology and Immunology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Markus David Siegelin
- Department of Pathology and Cell Biology, Columbia University, New York City, NY, United States
| | - Carmela Fimognari
- Dipartimento di Scienze per la Qualità della Vita Alma Mater Studiorum-Università di Bologna, Italy
| | - Nagi B Kumar
- Moffit Cancer Center, University of South Florida College of Medicine, Tampa, FL, United States
| | - Q Ping Dou
- Department of Oncology, Karmanos Cancer Institute, Wayne State University, Detroit, MI, United States; Departments of Pharmacology and Pathology, Karmanos Cancer Institute, Detroit MI, United States
| | - Huanjie Yang
- The School of Life Science and Technology, Harbin Institute of Technology, Harbin, Heilongjiang, China
| | | | - Gian Luigi Russo
- Institute of Food Sciences National Research Council, Avellino, Italy
| | - Carmela Spagnuolo
- Institute of Food Sciences National Research Council, Avellino, Italy
| | - Swapan K Ray
- Department of Pathology, Microbiology, and Immunology, University of South Carolina School of Medicine, Columbia, SC, United States
| | - Mrinmay Chakrabarti
- Department of Pathology, Microbiology, and Immunology, University of South Carolina School of Medicine, Columbia, SC, United States
| | - James D Morre
- Mor-NuCo, Inc, Purdue Research Park, West Lafayette, IN, United States
| | - Helen M Coley
- Faculty of Health and Medical Sciences, University of Surrey, Guildford, Surrey, United Kingdom
| | - Kanya Honoki
- Department of Orthopedic Surgery, Nara Medical University, Kashihara, Japan
| | - Hiromasa Fujii
- Department of Orthopedic Surgery, Nara Medical University, Kashihara, Japan
| | - Alexandros G Georgakilas
- Department of Physics, School of Applied Mathematical and Physical Sciences, National Technical University of Athens, Zografou 15780, Athens, Greece
| | - Amedeo Amedei
- Department of Experimental and Clinical Medicine, university of florence, Italy
| | - Elena Niccolai
- Department of Experimental and Clinical Medicine, university of florence, Italy
| | - Amr Amin
- Department of Biology, College of Science, UAE University, United Arab Emirates; Faculty of Science, Cairo University, Egypt
| | - S Salman Ashraf
- Department of Chemistry, College of Science, UAE University, United Arab Emirates
| | - William G Helferich
- Department of Food Science and Human Nutrition, University of Illinois at Urbana-Champaign, Urbana, IL, United States
| | - Xujuan Yang
- Department of Food Science and Human Nutrition, University of Illinois at Urbana-Champaign, Urbana, IL, United States
| | - Chandra S Boosani
- Department of BioMedical Sciences, School of Medicine Creighton University, Omaha NE, United States
| | - Gunjan Guha
- School of Chemical and Bio Technology, SASTRA University, Thanjavur, India
| | - Dipita Bhakta
- School of Chemical and Bio Technology, SASTRA University, Thanjavur, India
| | | | - Katia Aquilano
- Department of Biology, University of Rome "Tor Vergata", Italy
| | - Sophie Chen
- Ovarian and Prostate Cancer Research Trust Laboratory, Guildford, Surrey, United Kingdom
| | - Sulma I Mohammed
- Department of Comparative Pathobiology and Purdue University Center for Cancer Research, Purdue, West Lafayette, IN, United States
| | - W Nicol Keith
- Institute of Cancer Sciences, University of Glasgow, Glasgow, Ireland
| | - Alan Bilsland
- Institute of Cancer Sciences, University of Glasgow, Glasgow, Ireland
| | - Dorota Halicka
- Department of Pathology, New York Medical College, Valhalla, NY, United States
| | - Somaira Nowsheen
- Mayo Graduate School, Mayo Medical School, Mayo Clinic Medical Scientist Training Program, Rochester, MN, United States
| | - Asfar S Azmi
- Department of Oncology, Karmanos Cancer Institute, Wayne State University, Detroit, MI, United States
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Wang S, Yang Z, Gao Y, Li Q, Su Y, Wang Y, Zhang Y, Man H, Liu H. Pyruvate kinase, muscle isoform 2 promotes proliferation and insulin secretion of pancreatic β-cells via activating Wnt/CTNNB1 signaling. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY 2015; 8:14441-8. [PMID: 26823761 PMCID: PMC4713547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Accepted: 10/25/2015] [Indexed: 06/05/2023]
Abstract
Failure of pancreatic β-cells is closely associated with type 2 diabetes mellitus (T2DM), an intractable disease affecting numerous patients. Pyruvate kinase, muscle isoform 2 (PKM2) is a potential modulator of insulin secretion in β-cells. This study aims at revealing roles and possible mechanisms of PKM2 in pancreatic β-cells. Mouse pancreatic β-cell line NIT-1 was used for high glucose treatment and PKM2 overexpression by its specific expression vector. Cell proliferation by Thiazolyl blue assay, cell apoptosis by annexin V-fluorescein isothiocyanate/prodium iodide staining and insulin secretion assay by ELISA were performed in each group. The mRNA and protein levels of related factors were analyzed by real-time quantitative PCR and western blot. Results showed that Pkm2 was inhibited under high glucose conditions compared to the untreated cells (P < 0.01). Its overexpression significantly suppressed NIT-1 cell apoptosis (P < 0.01), and induced cell proliferation (P < 0.05) and insulin secretion (P < 0.05). Related factors showed consistent mRNA expression changes. Protein levels of β-catenin (CTNNB1), insulin receptor substrate 1 (IRS1) and IRS2 were all promoted by PKM2 overexpression (P < 0.01), indicating the activated Wnt/CTNNB1 signaling. These results indicated the inductive roles of PKM2 in pancreatic β-cell NIT-1, including promoting cell proliferation and insulin secretion, and inhibiting cell apoptosis, which might be achieved via activating the Wnt/CTNNB1 signaling and downstream factors. This study offers basic information on the role and mechanism of PKM2 in pancreatic β-cells, and lays the foundation for using PKM2 as a potential therapeutic target in T2DM.
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Affiliation(s)
- Suijun Wang
- Department of Endocrinology and Metabolism, Henan Provincial People’s Hospital, Zhengzhou UniversityZhengzhou 450003, P. R. China
| | - Zhen Yang
- Department of Endocrinology and Metabolism, Xinhua Hospital, Shanghai Jiaotong University School of MedicineShanghai 200092, P. R. China
| | - Ying Gao
- Neonatal Intensive Care Unit, Henan Provincial People’s Hospital, Zhengzhou UniversityZhengzhou 450003, P. R. China
| | - Quanzhong Li
- Department of Endocrinology and Metabolism, Henan Provincial People’s Hospital, Zhengzhou UniversityZhengzhou 450003, P. R. China
| | - Yong Su
- Department of Endocrinology and Metabolism, Henan Provincial People’s Hospital, Zhengzhou UniversityZhengzhou 450003, P. R. China
| | - Yanfang Wang
- Department of Endocrinology and Metabolism, Henan Provincial People’s Hospital, Zhengzhou UniversityZhengzhou 450003, P. R. China
| | - Yun Zhang
- Department of Endocrinology and Metabolism, Henan Provincial People’s Hospital, Zhengzhou UniversityZhengzhou 450003, P. R. China
| | - Hua Man
- Department of Endocrinology and Metabolism, Henan Provincial People’s Hospital, Zhengzhou UniversityZhengzhou 450003, P. R. China
| | - Hongxia Liu
- Department of Endocrinology and Metabolism, Henan Provincial People’s Hospital, Zhengzhou UniversityZhengzhou 450003, P. R. China
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Zeng C, Xing R, Liu J, Xing F. Role of CSL-dependent and independent Notch signaling pathways in cell apoptosis. Apoptosis 2015; 21:1-12. [DOI: 10.1007/s10495-015-1188-z] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Sionov RV, Vlahopoulos SA, Granot Z. Regulation of Bim in Health and Disease. Oncotarget 2015; 6:23058-134. [PMID: 26405162 PMCID: PMC4695108 DOI: 10.18632/oncotarget.5492] [Citation(s) in RCA: 136] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Accepted: 08/08/2015] [Indexed: 11/25/2022] Open
Abstract
The BH3-only Bim protein is a major determinant for initiating the intrinsic apoptotic pathway under both physiological and pathophysiological conditions. Tight regulation of its expression and activity at the transcriptional, translational and post-translational levels together with the induction of alternatively spliced isoforms with different pro-apoptotic potential, ensure timely activation of Bim. Under physiological conditions, Bim is essential for shaping immune responses where its absence promotes autoimmunity, while too early Bim induction eliminates cytotoxic T cells prematurely, resulting in chronic inflammation and tumor progression. Enhanced Bim induction in neurons causes neurodegenerative disorders including Alzheimer's, Parkinson's and Huntington's diseases. Moreover, type I diabetes is promoted by genetically predisposed elevation of Bim in β-cells. On the contrary, cancer cells have developed mechanisms that suppress Bim expression necessary for tumor progression and metastasis. This review focuses on the intricate network regulating Bim activity and its involvement in physiological and pathophysiological processes.
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Affiliation(s)
- Ronit Vogt Sionov
- Department of Developmental Biology and Cancer Research, Institute for Medical Research Israel Canada, Hebrew University, Hadassah Medical School, Jerusalem, Israel
| | - Spiros A. Vlahopoulos
- First Department of Pediatrics, University of Athens, Horemeio Research Laboratory, Thivon and Levadias, Goudi, Athens, Greece
| | - Zvi Granot
- Department of Developmental Biology and Cancer Research, Institute for Medical Research Israel Canada, Hebrew University, Hadassah Medical School, Jerusalem, Israel
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Inhibition of Bcl-2 or IAP proteins does not provoke mutations in surviving cells. Mutat Res 2015; 777:23-32. [PMID: 25916945 DOI: 10.1016/j.mrfmmm.2015.04.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2015] [Revised: 03/31/2015] [Accepted: 04/07/2015] [Indexed: 11/21/2022]
Abstract
Chemotherapy and radiotherapy can cause permanent damage to the genomes of surviving cells, provoking severe side effects such as second malignancies in some cancer survivors. Drugs that mimic the activity of death ligands, or antagonise pro-survival proteins of the Bcl-2 or IAP families have yielded encouraging results in animal experiments and early phase clinical trials. Because these agents directly engage apoptosis pathways, rather than damaging DNA to indirectly provoke tumour cell death, we reasoned that they may offer another important advantage over conventional therapies: minimisation or elimination of side effects such as second cancers that result from mutation of surviving normal cells. Disappointingly, however, we previously found that concentrations of death receptor agonists like TRAIL that would be present in vivo in clinical settings provoked DNA damage in surviving cells. In this study, we used cell line model systems to investigate the mutagenic capacity of drugs from two other classes of direct apoptosis-inducing agents: the BH3-mimetic ABT-737 and the IAP antagonists LCL161 and AT-406. Encouragingly, our data suggest that IAP antagonists possess negligible genotoxic activity. Doses of ABT-737 that were required to damage DNA stimulated Bax/Bak-independent signalling and exceeded concentrations detected in the plasma of animals treated with this drug. These findings provide hope that cancer patients treated by BH3-mimetics or IAP antagonists may avoid mutation-related illnesses that afflict some cancer survivors treated with conventional DNA-damaging anti-cancer therapies.
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Evasion of anti-growth signaling: A key step in tumorigenesis and potential target for treatment and prophylaxis by natural compounds. Semin Cancer Biol 2015; 35 Suppl:S55-S77. [PMID: 25749195 DOI: 10.1016/j.semcancer.2015.02.005] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2014] [Revised: 02/11/2015] [Accepted: 02/13/2015] [Indexed: 12/14/2022]
Abstract
The evasion of anti-growth signaling is an important characteristic of cancer cells. In order to continue to proliferate, cancer cells must somehow uncouple themselves from the many signals that exist to slow down cell growth. Here, we define the anti-growth signaling process, and review several important pathways involved in growth signaling: p53, phosphatase and tensin homolog (PTEN), retinoblastoma protein (Rb), Hippo, growth differentiation factor 15 (GDF15), AT-rich interactive domain 1A (ARID1A), Notch, insulin-like growth factor (IGF), and Krüppel-like factor 5 (KLF5) pathways. Aberrations in these processes in cancer cells involve mutations and thus the suppression of genes that prevent growth, as well as mutation and activation of genes involved in driving cell growth. Using these pathways as examples, we prioritize molecular targets that might be leveraged to promote anti-growth signaling in cancer cells. Interestingly, naturally occurring phytochemicals found in human diets (either singly or as mixtures) may promote anti-growth signaling, and do so without the potentially adverse effects associated with synthetic chemicals. We review examples of naturally occurring phytochemicals that may be applied to prevent cancer by antagonizing growth signaling, and propose one phytochemical for each pathway. These are: epigallocatechin-3-gallate (EGCG) for the Rb pathway, luteolin for p53, curcumin for PTEN, porphyrins for Hippo, genistein for GDF15, resveratrol for ARID1A, withaferin A for Notch and diguelin for the IGF1-receptor pathway. The coordination of anti-growth signaling and natural compound studies will provide insight into the future application of these compounds in the clinical setting.
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Wang H, Zhang Z, Wei X, Dai R. Small-molecule inhibitor of Bcl-2 (TW-37) suppresses growth and enhances cisplatin-induced apoptosis in ovarian cancer cells. J Ovarian Res 2015; 8:3. [PMID: 25823945 PMCID: PMC4351907 DOI: 10.1186/s13048-015-0130-x] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2014] [Accepted: 02/07/2015] [Indexed: 11/17/2022] Open
Abstract
Background Bcl-2 plays a major role in the pathobiology and drug resistance of ovarian cancer, and inhibition of bcl-2 was useful for OC therapy. It has previously reported that TW-37, a small-molecule inhibitor of Bcl-2 family proteins, inhibited cell growth and induced apoptosis in many cancer cells. In the present study,we investigate the effect of TW-37 or / and in combination with cisplain on several ovarian cancer (OC) cell lines with high bcl-2 expression. Methods The bcl-2 mRNA and protein expression, and the cisplain (DDP) sensitivity of OC cell lines SKOV3, OVCAR3, OV-90 and 3AO and SKOV3DDP were determined by Quantitative real-time RT-PCR,Western blot, and 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide and fluorescence-activated cell sorting (MTT) assays. The effects of TW-37 alone or combined with cisplain on growth and apoptosis in bcl-2 overexpressed OVCAR3, OV-90 and SKOV3DDP cells was detected by MTT,clonogenic assay, ELISA and terminal deoxynucleotidyl transferase-mediated nick end labeling (TUNEL) assay. Results The cell lines SKOV3 and 3AO were sensitive, whereas OVCAR3, OV-90 and SKOV3DDP were resistant to cisplain. Significant positive correlation was observed between basal bcl-2 mRNA and protein and cisplain sensitivity. Cisplain treatment did not activate bcl-2 in vitro. Treatment with TW-37 inhibited bcl-2 expression in bcl-2 overexpressed OVCAR3, OV-90 and SKOV3DDP cells , and inhibited growth and induced apoptosis ,and increased cisplain killing of the bcl-2 overexpressed cells in a does and time-dependant manner in vitro. Conclusion Bcl-2 level positively correlated with sensitivity to cisplain. Treatment with TW-37 was effective alone and in combination with cisplain in bcl-2 overexpressed OC cell lines in vitro. Thus, TW-37 may be a useful therapeutic agent for OCs.
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Yan B, Liu L, Zhao Y, Xiu LJ, Sun DZ, Liu X, Lu Y, Shi J, Zhang YC, Li YJ, Wang XW, Zhou YQ, Feng SH, Lv C, Wei PK, Qin ZF. Xiaotan Sanjie decoction attenuates tumor angiogenesis by manipulating Notch-1-regulated proliferation of gastric cancer stem-like cells. World J Gastroenterol 2014; 20:13105-13118. [PMID: 25278704 PMCID: PMC4177489 DOI: 10.3748/wjg.v20.i36.13105] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2013] [Revised: 02/10/2014] [Accepted: 05/19/2014] [Indexed: 02/06/2023] Open
Abstract
AIM: To determine the underlying mechanisms of action and influence of Xiaotan Sanjie (XTSJ) decoction on gastric cancer stem-like cells (GCSCs).
METHODS: The gastric cancer cell line MKN-45 line was selected and sorted by FACS using the cancer stem cell marker CD44; the stemness of these cells was checked in our previous study. In an in vitro study, the expression of Notch-1, Hes1, Vascular endothelial growth factor (VEGF), and Ki-67 in both CD44-positive gastric cancer stem-like cells (GCSCs) and CD44-negative cells was measured by Western blot. The effect of XTSJ serum on cell viability and on the above markers was measured by MTT assay and Western blot, respectively. In an in vivo study, the ability to induce angiogenesis and maintenance of GCSCs in CD44-positive-MKN-45- and CD44-negative-engrafted mice were detected by immunohistochemical staining using markers for CD34 and CD44, respectively. The role of XTSJ decoction in regulating the expression of Notch-1, Hes1, VEGF and Ki-67 was measured by Western blot and real-time polymerase chain reaction.
RESULTS: CD44+ GCSCs showed more cell proliferation and VEGF secretion than CD44-negative cells in vitro, which were accompanied by the high expression of Notch-1 and Hes1 and positively associated with tumor growth (GCSCs vs CD44-negative cells, 2.72 ± 0.25 vs 1.46 ± 0.16, P < 0.05) and microvessel density (MVD) (GCSCs vs CD44-negative cells, 8.15 ± 0.42 vs 3.83 ± 0.49, P < 0.001) in vivo. XTSJ decoction inhibited the viability of both cell types in a dose-dependent manner in vitro. Specifically, a significant difference in the medium- (82.87% ± 6.53%) and high-dose XTSJ groups (77.43% ± 7.34%) was detected at 24 h in the CD44+ GCSCs group compared with the saline group (95.42% ± 5.76%) and the low-dose XTSJ group (90.74% ± 6.57%) (P < 0.05). However, the efficacy of XTSJ decoction was reduced in the CD44- groups; significant differences were only detected in the high-dose XTSJ group at 48 h (78.57% ± 6.94%) and 72 h (72.12% ± 7.68%) when compared with the other CD44- groups (P < 0.05). Notably, these differences were highly consistent with the Notch-1, Hes1, VEGF and Ki-67 expression in these cells. Similarly, in vivo, XTSJ decoction inhibited tumor growth in a dose-dependent manner. A significant difference was observed in the medium- (1.76 ± 0.15) and high-dose XTSJ (1.33 ± 0.081) groups compared with the GCSCs control group (2.72 ± 0.25) and the low-dose XTSJ group (2.51 ± 0.25) (P < 0.05). We also detected a remarkable decrease of MVD in the medium- (7.10 ± 0.60) and high-dose XTSJ (5.99 ± 0.47) groups compared with the GCSC control group (8.15 ± 0.42) and the low-dose XTSJ group (8.14 ± 0.46) (P < 0.05). Additionally, CD44 expression was decreased in these groups [medium- (4.43 ± 0.45) and high-dose XTSJ groups (3.56 ± 0.31) vs the GCSC control (5.96 ± 0.46) and low dose XTSJ groups (5.91 ± 0.38)] (P < 0.05). The significant differences in Notch-1, Hes1, VEGF and Ki-67 expression highly mirrored the results of XTSJ decoction in inhibiting tumor growth, MVD and CD44 expression.
CONCLUSION: Notch-1 may play an important role in regulating the proliferation of GCSCs; XTSJ decoction could attenuate tumor angiogenesis, at least partially, by inhibiting Notch-1.
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MESH Headings
- Angiogenesis Inhibitors/pharmacology
- Animals
- Antineoplastic Agents, Phytogenic/pharmacology
- Basic Helix-Loop-Helix Transcription Factors/genetics
- Basic Helix-Loop-Helix Transcription Factors/metabolism
- Cell Line, Tumor
- Cell Proliferation/drug effects
- Dose-Response Relationship, Drug
- Drugs, Chinese Herbal/pharmacology
- Gene Expression Regulation, Neoplastic
- Homeodomain Proteins/genetics
- Homeodomain Proteins/metabolism
- Humans
- Hyaluronan Receptors/genetics
- Hyaluronan Receptors/metabolism
- Ki-67 Antigen/genetics
- Ki-67 Antigen/metabolism
- Male
- Mice, Nude
- Neoplastic Stem Cells/drug effects
- Neoplastic Stem Cells/metabolism
- Neoplastic Stem Cells/pathology
- Neovascularization, Pathologic
- Rats, Sprague-Dawley
- Receptor, Notch1/antagonists & inhibitors
- Receptor, Notch1/genetics
- Receptor, Notch1/metabolism
- Signal Transduction/drug effects
- Stomach Neoplasms/blood supply
- Stomach Neoplasms/drug therapy
- Stomach Neoplasms/genetics
- Stomach Neoplasms/metabolism
- Stomach Neoplasms/pathology
- Time Factors
- Transcription Factor HES-1
- Vascular Endothelial Growth Factor A/genetics
- Vascular Endothelial Growth Factor A/metabolism
- Xenograft Model Antitumor Assays
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De Jesus-Acosta A, Laheru D, Maitra A, Arcaroli J, Rudek MA, Dasari A, Blatchford PJ, Quackenbush K, Messersmith W. A phase II study of the gamma secretase inhibitor RO4929097 in patients with previously treated metastatic pancreatic adenocarcinoma. Invest New Drugs 2014; 32:739-45. [PMID: 24668033 PMCID: PMC4292847 DOI: 10.1007/s10637-014-0083-8] [Citation(s) in RCA: 86] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2014] [Accepted: 02/28/2014] [Indexed: 12/18/2022]
Abstract
PURPOSE The notch pathway is overexpressed in pancreatic adenocarcinoma. RO4929097, an oral inhibitor of the γ-secretase enzyme has been safely given as a single agent in patients with advanced solid tumors. We aimed to evaluate the efficacy of RO4929097 in patients with pancreatic adenocarcinoma (PDA). METHODS A two-stage, single-arm Phase II trial was conducted in patients with previously treated metastatic PDA. RO4929097 was administered at a dose of 20 mg daily on days 1-3, 8-10 and 15-17 of 21-day cycles. The primary endpoint was survival at 6 months. Secondary endpoints included overall survival (OS), response rate, toxicities, pharmacokinetic and pharmacodynamic analyses. RESULTS Eighteen patients were recruited, 17 in the first stage and one in the 2nd stage. It was decided to stop further enrollment after RO4929097 was discontinued by the sponsor and was no longer a development candidate. Three (25 %) of 12 evaluable patients achieved stable disease. The 6-month survival rate was 27.8 % (95 % CI 9.7-53.5). The median OS was 4.1 months (95 % CI 2.7-5.8 months) and median progression-free survival was 1.5 months (95 % CI 1.3-1.6 months). Pharmacokinetic properties of RO4929097 in patients (n = 5) with PDA was similar to that previously reported in other patient populations. There was a trend towards a decrease in HeyL (p = 0.08) gene expression in three patients following study drug administration. CONCLUSIONS RO4929097 was well-tolerated in patients with previously treated PDA. Development of RO4929097 has been discontinued, but development of other notch-targeting agents in pancreatic cancer is continuing.
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Affiliation(s)
- Ana De Jesus-Acosta
- Department of Oncology, The Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, 1650 Orleans St. CRB1-4M08, Baltimore, MD, 21287, USA,
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Li L, Leung PS. Use of herbal medicines and natural products: an alternative approach to overcoming the apoptotic resistance of pancreatic cancer. Int J Biochem Cell Biol 2014; 53:224-36. [PMID: 24875648 DOI: 10.1016/j.biocel.2014.05.021] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2014] [Revised: 05/08/2014] [Accepted: 05/16/2014] [Indexed: 02/07/2023]
Abstract
Pancreatic cancer has a poor prognosis with a 5-year survival rate of <5%. It does not respond well to either chemotherapy or radiotherapy, due partly to apoptotic resistance (AR) of the cancer cells. AR has been attributed to certain genetic abnormalities or defects in apoptotic signaling pathways. In pancreatic cancer, significant mutations of K-ras and p53, constitutive activation of NFκB, over-expression of heat shock proteins (Hsp90, Hsp70), histone deacetylase (HDACs) and the activities of other proteins (COX-2, Nrf2 and bcl-2 family members) are closely linked with resistance to apoptosis and invasion. AR has also been associated with aberrant signaling of MAPK, PI3K-AKT, JAK/STAT, SHH, Notch, and Wnt/β-catenin pathways. Strategies targeting these signaling molecules and pathways provide an alternative for overcoming AR in pancreatic cancer. The use of herbal medicines or natural products (HM/NPs) alone or in combination with conventional anti-cancer agents has been shown to produce beneficial effects through actions upon multiple molecular pathways involved in AR. The current standard first-line chemotherapeutic agents for pancreatic cancer are gemcitabine (Gem) or Gem-containing combinations; however, the efficacy is dissatisfied and this limitation is largely attributed to AR. Meanwhile, emerging data have pointed to a combination of HM/NPs that may augment the sensitivity of pancreatic cancer cells to Gem. Greater understanding of how these compounds affect the molecular mechanisms of apoptosis may propel development of HM/NPs as anti-cancer agents and/or adjuvant therapies forward. In this review, we give a critical appraisal of the use of HM/NPs alone and in combination with anti-cancer drugs. We also discuss the potential regulatory mechanisms whereby AR is involved in these protective pathways.
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Affiliation(s)
- Lin Li
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong
| | - Po Sing Leung
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong.
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Wang J, Li W. Discovery of novel second mitochondria-derived activator of caspase mimetics as selective inhibitor of apoptosis protein inhibitors. J Pharmacol Exp Ther 2014; 349:319-29. [PMID: 24623800 DOI: 10.1124/jpet.113.212019] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Inhibitor of apoptosis (IAP) proteins are widely considered as promising cancer drug targets, especially for drug-resistant tumors. Mimicking the IAP-binding motif of second mitochondria-derived activator of caspases (SMAC) is a rational strategy to design potential IAP inhibitors. In this report, we used the bioactive conformation of AVPI tetrapeptide in the N terminus of SMAC as a template and performed a shape-based virtual screening against a drug-like compound library to identify novel IAP inhibitors. Top hits were subsequently docked to available IAP crystal structures as a secondary screening followed by validation using in vitro biologic assays. Four novel hit compounds were identified to potently inhibit cell growth in two human melanoma (A375 and M14) and two human prostate (PC-3 and DU145) cancer cell lines. The best compound, UC-112 [5-((benzyloxy)methyl)-7-(pyrrolidin-1-ylmethyl)quinolin-8-ol], has IC50 values ranging from 0.7 to 3.4 µM. UC-112 also potently inhibits the growth of P-glycoprotein (P-gp)-overexpressed multidrug-resistant cancer cells, strongly activates caspase-3/7 and caspase-9 activities, and selectively downregulates survivin level at a concentration as low as 1 µM. Coincubation of UC-112 with a known proteasome inhibitor Z-Leu-Leu-Leu-CHO (MG-132) rescued survivin inhibition, consistent with the anticipated mechanism of action for UC-112. As a single agent, UC-112 strongly inhibits tumor growth and reduces both X chromosome-linked IAP and survivin levels in an A375 human melanoma xenograft model in vivo. Overall, our study identified novel scaffolds, especially UC-112, as new platforms on which potent and selective IAP antagonists can be developed.
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Affiliation(s)
- Jin Wang
- Department of Pharmaceutical Sciences, College of Pharmacy, The University of Tennessee Health Science Center, Memphis, Tennessee
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Kim PS, Jochems C, Grenga I, Donahue RN, Tsang KY, Gulley JL, Schlom J, Farsaci B. Pan-Bcl-2 inhibitor, GX15-070 (obatoclax), decreases human T regulatory lymphocytes while preserving effector T lymphocytes: a rationale for its use in combination immunotherapy. THE JOURNAL OF IMMUNOLOGY 2014; 192:2622-33. [PMID: 24516200 DOI: 10.4049/jimmunol.1301369] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Bcl-2 inhibitors are currently being evaluated in clinical studies for treatment of patients with solid tumors and hematopoietic malignancies. In this study we explored the potential for combining the pan-Bcl-2 inhibitor GX15-070 (GX15; obatoclax) with immunotherapeutic modalities. We evaluated the in vitro effects of GX15 on human T cell subsets obtained from PBMCs in terms of activation, memory, and suppressive function. Our results indicated that in healthy-donor PBMCs, mature-activated T cells were more resistant to GX15 than early-activated T cells, and that GX15 preserved memory but not non-memory T cell populations. Furthermore, GX15 increased the apoptosis of regulatory T cells (Tregs), profoundly downregulated FOXP3 and CTLA-4 in a dose-dependent manner, and decreased their suppressive function. Treating PBMCs obtained from ovarian cancer patients with GX15 also resulted in increased CD8(+):Treg and CD4(+):Treg ratios. These results support preclinical studies in which mice vaccinated before treatment with GX15 showed the greatest reduction in metastatic lung tumors as a result of increased apoptotic resistance of mature CD8(+) T cells and decreased Treg function brought about by GX15. Taken together, these findings suggest that when a Bcl-2 inhibitor is combined with active immunotherapy in humans, such as the use of a vaccine or immune checkpoint inhibitor, immunotherapy should precede administration of the Bcl-2 inhibitor to allow T cells to become mature, and thus resistant to the cytotoxic effects of the Bcl-2 inhibitor.
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Affiliation(s)
- Peter S Kim
- Laboratory of Tumor Immunology and Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892
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Yang Q, Zhang F, Ding Y, Huang J, Chen S, Wu Q, Wang Z, Wang Z, Chen C. Antitumour activity of the recombination polypeptide GST-NT21MP is mediated by inhibition of CXCR4 pathway in breast cancer. Br J Cancer 2014; 110:1288-97. [PMID: 24448360 PMCID: PMC3950870 DOI: 10.1038/bjc.2014.1] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2013] [Revised: 12/09/2013] [Accepted: 12/19/2013] [Indexed: 01/02/2023] Open
Abstract
BACKGROUND CXC chemokine receptor 4 (CXCR4) and its ligand stromal cell-derived factor-1α (SDF-1α, also known as CXCL12) have important roles in promoting tumour growth and metastasis. Therefore, targeting CXCR4 could be a promising strategy for treatment of human cancer. METHODS To achieve this goal, we developed a highly purified recombination polypeptide (GST-NT21MP), which is a synthetic 21-mer peptide antagonist of CXCR4 (NT21MP) derived from the viral macrophage inflammatory protein II by fermentation technology, affinity chromatography and fast protein liquid chromatography. In this study, we used multiple methods such as MTT assay, FACS, invasion assay, RT-PCR and western blot to explore the efficacy and mechanism by which GST-NT21MP inhibits cell growth, migration and invasion of breast cancer in vitro and in vivo. RESULTS We found that blockade of CXCR4 pathway by GST-NT21MP decreased SDF-1-induced cell growth, adhesion and migration capacities in breast cancer cells. Moreover, GST-NT21MP significantly retarded pulmonary metastasis in vivo. Furthermore, GST-NT21MP-mediated antitumour activity was found to be associated with reduced phosphorylated Src, Akt, FAK and ERK1/2 as well as decreased Bcl-2. CONCLUSIONS Our results suggest that GST-NT21MP could be a potential anticancer agent for the treatment of breast cancer.
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Affiliation(s)
- Q Yang
- Department of Biochemistry and Molecular Biology, Bengbu Medical College, Anhui 233030, China
| | - F Zhang
- Clinical Testing and Diagnose Experimental Center of Bengbu Medical College, Anhui 233000, China
| | - Y Ding
- Branch of Tumour of the Center Hospital of Bengbu, Anhui 233000, China
| | - J Huang
- Clinical Testing and Diagnose Experimental Center of Bengbu Medical College, Anhui 233000, China
| | - S Chen
- Department of Biochemistry and Molecular Biology, Bengbu Medical College, Anhui 233030, China
| | - Q Wu
- Department of Medical Oncology, First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui 233004, China
| | - Z Wang
- Clinical Testing and Diagnose Experimental Center of Bengbu Medical College, Anhui 233000, China
| | - Z Wang
- 1] Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA [2] Cyrus Tang Hematology Center, Jiangsu Institute of Hematology, First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215123, China
| | - C Chen
- Department of Biochemistry and Molecular Biology, Bengbu Medical College, Anhui 233030, China
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Masood A, Azmi AS, Mohammad RM. Small molecule inhibitors of bcl-2 family proteins for pancreatic cancer therapy. Cancers (Basel) 2013; 3:1527-49. [PMID: 21760983 PMCID: PMC3134295 DOI: 10.3390/cancers3021527] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Pancreatic cancer (PC) has a complex etiology and displays a wide range of cellular escape pathways that allow it to resist different treatment modalities. Crucial signaling molecules that function downstream of the survival pathways, particularly at points where several of these pathways crosstalk, provide valuable targets for the development of novel anti-cancer drugs. Bcl-2 family member proteins are anti-apoptotic molecules that are known to be overexpressed in most cancers including PC. The anti-apoptotic machinery has been linked to the observed resistance developed to chemotherapy and radiation and therefore is important from the targeted drug development point of view. Over the past ten years, our group has extensively studied a series of small molecule inhibitors of Bcl-2 against PC and provide solid preclinical platform for testing such novel drugs in the clinic. This review examines the efficacy, potency, and function of several small molecule inhibitor drugs targeted to the Bcl-2 family of proteins and their preclinical progress against PC. This article further focuses on compounds that have been studied the most and also discusses the anti-cancer potential of newer class of Bcl-2 drugs.
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Affiliation(s)
- Ashiq Masood
- Department of Internal Medicine/Pathology, Karmanos Cancer Institute, Wayne State University, 4100 John R, HWCRC 732, Detroit, MI 48201, USA; E-Mail:
| | - Asfar S. Azmi
- Department of Pathology, Karmanos Cancer Institute, Wayne State University, 4100 John R, HWCRC 732, Detroit MI 48201, USA; E-Mail:
| | - Ramzi M. Mohammad
- Department of Internal Medicine/Pathology, Karmanos Cancer Institute, Wayne State University, 4100 John R, HWCRC 732, Detroit, MI 48201, USA; E-Mail:
- Department of Oncology, Karmanos Cancer Institute, 4100 John R, HWCRC 732, Detroit, MI 48201, USA
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +1-313-576-8329; Fax: +1-313-576-8389
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Abstract
Notch signaling is an evolutionarily conserved cell signaling pathway involved in cell fate during development, stem cell renewal and differentiation in postnatal tissues. Roles for Notch in carcinogenesis, in the biology of cancer stem cells and tumor angiogenesis have been reported. These features identify Notch as a potential therapeutic target in oncology. Based on the molecular structure of Notch receptor, Notch ligands and Notch activators, a set of Notch pathway inhibitors have been developed. Most of these inhibitors had shown anti-tumor effects in preclinical studies. At the same time, the combinatorial effect of these inhibitors with current chemotherapeutical drugs is still under study in different clinical trials. In this review, we describe the basics of Notch signaling and the role of Notch in normal and cancer stem cells as a logic way to develop different Notch inhibitors and their current stage of progress for cancer patient's treatment.
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Affiliation(s)
- Ingrid Espinoza
- University of Mississippi, Cancer Institute, Jackson, Mississippi
| | - Lucio Miele
- University of Mississippi, Cancer Institute, Jackson, Mississippi
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Takao S, Ding Q, Matsubara S. Pancreatic cancer stem cells: regulatory networks in the tumor microenvironment and targeted therapy. JOURNAL OF HEPATO-BILIARY-PANCREATIC SCIENCES 2013; 19:614-20. [PMID: 22878838 DOI: 10.1007/s00534-012-0547-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Recent evidence has demonstrated that the existence of a cancer stem cell (CSC) subset in a solid tumor is responsible for the progression and relapse of cancer as well as its resistance to current therapies. Over the past decade, CSC research on pancreatic cancer has progressed. A fundamental understanding of pancreatic CSCs may improve therapies and deepen insight into the role of cell-cell interactions within a tumor microenvironment in pancreatic cancer progression. This review focuses on the impact of pancreatic CSCs on the regulatory networks in the tumor microenvironment, and the implications of targeting CSCs to treat pancreatic cancer.
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Affiliation(s)
- Sonshin Takao
- Frontier Science Research Center, Faculty of Medicine, Kagoshima University, 8-35-1 Sakuragaoka, Kagoshima, Kagoshima, 890-8520, Japan.
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Sionov RV. MicroRNAs and Glucocorticoid-Induced Apoptosis in Lymphoid Malignancies. ISRN HEMATOLOGY 2013; 2013:348212. [PMID: 23431463 PMCID: PMC3569899 DOI: 10.1155/2013/348212] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2012] [Accepted: 11/14/2012] [Indexed: 12/20/2022]
Abstract
The initial response of lymphoid malignancies to glucocorticoids (GCs) is a critical parameter predicting successful treatment. Although being known as a strong inducer of apoptosis in lymphoid cells for almost a century, the signaling pathways regulating the susceptibility of the cells to GCs are only partly revealed. There is still a need to develop clinical tests that can predict the outcome of GC therapy. In this paper, I discuss important parameters modulating the pro-apoptotic effects of GCs, with a specific emphasis on the microRNA world comprised of small players with big impacts. The journey through the multifaceted complexity of GC-induced apoptosis brings forth explanations for the differential treatment response and raises potential strategies for overcoming drug resistance.
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Affiliation(s)
- Ronit Vogt Sionov
- The Department of Biochemistry and Molecular Biology, The Institute for Medical Research-Israel-Canada, Hadassah Medical School, The Hebrew University of Jerusalem, Ein-Kerem, 91120 Jerusalem, Israel
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Li D, Liu Z, Zhao W, Zheng X, Wang J, Wang E. A small-molecule induces apoptosis and suppresses metastasis in pancreatic cancer cells. Eur J Pharm Sci 2013; 48:658-67. [PMID: 23313624 DOI: 10.1016/j.ejps.2012.12.023] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2012] [Revised: 12/09/2012] [Accepted: 12/28/2012] [Indexed: 12/11/2022]
Abstract
Pancreatic cancer is one of the most malignant tumor diseases with the characters of aggressive growth and metastasis. With the inefficiency of the current therapeutics, new potential targets and new therapeutic agents for healing of pancreatic cancer are critically needed. We have previously found a small molecule, named 4-tert-butyl-2-[(cyclohexylamino) methyl]-6-methylphenol (TBMMP, NSC number: 48160), which can freeze the intermediate of Ras-GTP hydrolysis in the open non-signaling conformation with high affinity and high specificity in silico. In this work, we studied the effect and mechanism of TBMMP on two pancreatic cancer cell lines, CFPAC-1 and BxPC-3. The results showed that TBMMP could restrain the growth of the pancreatic cancer cells with IC(50) value 84.3 μM for CPFAC-1 and 94.5 μM for BxPC-3, respectively. Additionally, TBMMP increased cytochrome c release, reduced mitochondrial membrane potential, activated caspase-3, -9, elevated ROS and increased expression of the Bax in the pancreatic cancer cell lines. The results indicated that TBMMP induced the apoptosis of pancreatic cancer cells through the mitochondrial pathway. Further, we also found that TBMMP could suppress the metastasis of both pancreatic cancer cells in vitro. Taken together, we proposed that TBMMP might be a therapeutic potential lead for treating patients with pancreatic cancer.
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Affiliation(s)
- Dan Li
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, China
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A review of the role of Puma, Noxa and Bim in the tumorigenesis, therapy and drug resistance of chronic lymphocytic leukemia. Cancer Gene Ther 2012; 20:1-7. [DOI: 10.1038/cgt.2012.84] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Syed F, Bayat A. Notch signaling pathway in keloid disease: Enhanced fibroblast activity in a Jagged-1 peptide-dependent manner in lesional vs. extralesional fibroblasts. Wound Repair Regen 2012; 20:688-706. [DOI: 10.1111/j.1524-475x.2012.00823.x] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Xia J, Li Y, Yang Q, Mei C, Chen Z, Bao B, Ahmad A, Miele L, Sarkar FH, Wang Z. Arsenic trioxide inhibits cell growth and induces apoptosis through inactivation of notch signaling pathway in breast cancer. Int J Mol Sci 2012; 13:9627-9641. [PMID: 22949821 PMCID: PMC3431819 DOI: 10.3390/ijms13089627] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Revised: 07/15/2012] [Accepted: 07/25/2012] [Indexed: 01/09/2023] Open
Abstract
Arsenic trioxide has been reported to inhibit cell growth and induce apoptotic cell death in many human cancer cells including breast cancer. However, the precise molecular mechanisms underlying the anti-tumor activity of arsenic trioxide are still largely unknown. In the present study, we assessed the effects of arsenic trioxide on cell viability and apoptosis in breast cancer cells. For mechanistic studies, we used multiple cellular and molecular approaches such as MTT assay, apoptosis ELISA assay, gene transfection, RT-PCR, Western blotting, and invasion assays. For the first time, we found a significant reduction in cell viability in arsenic trioxide-treated cells in a dose-dependent manner, which was consistent with induction of apoptosis and also associated with down-regulation of Notch-1 and its target genes. Taken together, our findings provide evidence showing that the down-regulation of Notch-1 by arsenic trioxide could be an effective approach, to cause down-regulation of Bcl-2, and NF-κB, resulting in the inhibition of cell growth and invasion as well as induction of apoptosis. These results suggest that the anti-tumor activity of arsenic trioxide is in part mediated through a novel mechanism involving inactivation of Notch-1 and its target genes. We also suggest that arsenic trioxide could be further developed as a potential therapeutic agent for the treatment of breast cancer.
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Affiliation(s)
- Jun Xia
- Department of Biochemistry and Molecular Biology, Bengbu Medical College, Bengbu 233030, China; E-Mails: (J.X.); (C.M.); (Z.C.)
| | - Youjian Li
- Laboratory Medicine, Taixing People’s Hospital, Taizhou 225400, China; E-Mail:
| | - Qingling Yang
- Research Center of Clinical Laboratory Science, Bengbu Medical College, Bengbu 233030, China; E-Mail:
| | - Chuanzhong Mei
- Department of Biochemistry and Molecular Biology, Bengbu Medical College, Bengbu 233030, China; E-Mails: (J.X.); (C.M.); (Z.C.)
| | - Zhiwen Chen
- Department of Biochemistry and Molecular Biology, Bengbu Medical College, Bengbu 233030, China; E-Mails: (J.X.); (C.M.); (Z.C.)
| | - Bin Bao
- Department of Pathology and Oncology, Karmanos Cancer Institute, Wayne State University, Detroit, MI 48201, USA; E-Mails: (B.B.); (A.A.); (F.H.S.)
| | - Aamir Ahmad
- Department of Pathology and Oncology, Karmanos Cancer Institute, Wayne State University, Detroit, MI 48201, USA; E-Mails: (B.B.); (A.A.); (F.H.S.)
| | - Lucio Miele
- University of Mississippi Cancer Institute, 2500 N State St, Jackson, MS 39216, USA; E-Mail:
| | - Fazlul H Sarkar
- Department of Pathology and Oncology, Karmanos Cancer Institute, Wayne State University, Detroit, MI 48201, USA; E-Mails: (B.B.); (A.A.); (F.H.S.)
| | - Zhiwei Wang
- Department of Biochemistry and Molecular Biology, Bengbu Medical College, Bengbu 233030, China; E-Mails: (J.X.); (C.M.); (Z.C.)
- Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, 330 Brookline Avenue, Boston, MA 02215, USA
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +1-617-735-2474; Fax: +1-617-735-2480
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Mitsuhashi Y, Horiuchi A, Miyamoto T, Kashima H, Suzuki A, Shiozawa T. Prognostic significance of Notch signalling molecules and their involvement in the invasiveness of endometrial carcinoma cells. Histopathology 2012; 60:826-37. [PMID: 22348356 DOI: 10.1111/j.1365-2559.2011.04158.x] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
AIMS The aim of this study was to investigate the significance of the expression of Notch-related molecules in endometrial carcinoma. METHODS AND RESULTS The expression of Notch receptors (Notch1 and 3) and Notch ligands [Jagged (JAG) 1 and Delta-like (DLL) 4] was examined immunohistochemically in 37 normal and 76 malignant endometrial tissue samples. For each section, immunohistochemical staining was scored using a positivity index (PI, full score; 200). The effects of a Notch inhibitor, DAPT, on cell proliferation, invasion and motility were investigated using endometrial carcinoma cell lines. The PIs for Notch1 (mean±SD 90.4±15.3), Notch3 (95.6 ± 20.4), JAG1 (95.5±10.0) and DLL4 (88.2±9.6), were significantly higher in endometrial carcinoma than normal endometrium. The PI for Notch1 was associated significantly with advanced International Federation of Gynecologists & Obstetricians (FIGO) stage. In addition, patients with tumours showing high expression of both Notch1 and JAG1 had a poor prognosis compared with those having double-negative carcinomas (P=0.015). DAPT suppressed invasiveness of cells derived from the endometrial carcinoma cell line KLE. CONCLUSIONS The Notch1-JAG1 axis may enhance the invasive properties of endometrial carcinomas, which suggests the Notch pathway may be a promising target for the treatment of this malignancy.
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Affiliation(s)
- Yuko Mitsuhashi
- Department of Obstetrics and Gynecology, Shinshu University School of Medicine, Matsumoto, Japan
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Subramaniam D, Ponnurangam S, Ramamoorthy P, Standing D, Battafarano RJ, Anant S, Sharma P. Curcumin induces cell death in esophageal cancer cells through modulating Notch signaling. PLoS One 2012; 7:e30590. [PMID: 22363450 PMCID: PMC3281833 DOI: 10.1371/journal.pone.0030590] [Citation(s) in RCA: 179] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2011] [Accepted: 12/19/2011] [Indexed: 12/21/2022] Open
Abstract
Background Curcumin inhibits the growth of esophageal cancer cell lines; however, the mechanism of action is not well understood. It is becoming increasingly clear that aberrant activation of Notch signaling has been associated with the development of esophageal cancer. Here, we have determined that curcumin inhibits esophageal cancer growth via a mechanism mediated through the Notch signaling pathway. Methodology/Principal Findings In this study, we show that curcumin treatment resulted in a dose and time dependent inhibition of proliferation and colony formation in esophageal cancer cell lines. Furthermore, curcumin treatment induced apoptosis through caspase 3 activation, confirmed by an increase in the ratio of Bax to Bcl2. Cell cycle analysis demonstrated that curcumin treatment induced cell death and down regulated cyclin D1 levels. Curcumin treatment also resulted in reduced number and size of esophagospheres. Furthermore, curcumin treatment led to reduced Notch-1 activation, expression of Jagged-1 and its downstream target Hes-1. This reduction in Notch-1 activation was determined to be due to the down-regulation of critical components of the γ-secretase complex proteins such as Presenilin 1 and Nicastrin. The combination of a known γ-secretase inhibitor DAPT and curcumin further decreased proliferation and induced apoptosis in esophageal cancer cells. Finally, curcumin treatment down-regulate the expressions of Notch-1 specific microRNAs miR-21 and miR-34a, and upregulated tumor suppressor let-7a miRNA. Conclusion/Significance Curcumin is a potent inhibitor of esophageal cancer growth that targets the Notch-1 activating γ-secretase complex proteins. These data suggest that Notch signaling inhibition is a novel mechanism of action for curcumin during therapeutic intervention in esophageal cancers.
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Affiliation(s)
- Dharmalingam Subramaniam
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center, Kansas City, Kansas, United States of America
- The University of Kansas Cancer Center, University of Kansas Medical Center, Kansas City, Kansas, United States of America
- * (D. Subramaniam); (PS)
| | - Sivapriya Ponnurangam
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center, Kansas City, Kansas, United States of America
| | - Prabhu Ramamoorthy
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center, Kansas City, Kansas, United States of America
| | - David Standing
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center, Kansas City, Kansas, United States of America
| | - Richard J. Battafarano
- Department of Surgery, University of Maryland School of Medicine, Baltimore, Maryland, United States of America
| | - Shrikant Anant
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center, Kansas City, Kansas, United States of America
- The University of Kansas Cancer Center, University of Kansas Medical Center, Kansas City, Kansas, United States of America
| | - Prateek Sharma
- Division of Gastroenterology and Hepatology, University of Kansas Medical Center, Kansas City, Kansas, United States of America
- The University of Kansas Cancer Center, University of Kansas Medical Center, Kansas City, Kansas, United States of America
- * (D. Subramaniam); (PS)
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A role for bcl-2 in notch1-dependent transcription in thymic lymphoma cells. Adv Hematol 2012; 2012:435241. [PMID: 22319533 PMCID: PMC3272787 DOI: 10.1155/2012/435241] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2011] [Revised: 10/19/2011] [Accepted: 10/21/2011] [Indexed: 12/24/2022] Open
Abstract
Notch1 is a transcription factor important for T-cell development. Notch1 is active in double negative (DN) thymocytes, while being depressed in double positive (DP) thymocytes. Synchronously, the expression of Bcl-2 becomes downregulated during the transition from DN to DP thymocytes. We previously observed that overexpression of an intracellular active Notch1 (ICN) in Bcl-2-positive 2B4 T cells leads to the transcription of Notch1-regulated genes. However, these genes were not induced in Bcl-2-negative DP PD1.6 thymic lymphoma cells overexpressing ICN. Here we show that, when Bcl-2 is simultaneously introduced into these cells, Notch-regulated genes are transcribed. Only in the presence of both Bcl-2 and ICN, PD1.6 thymic lymphoma cells become resistant to glucocorticoid (GC)-induced apoptosis. Our data suggest that Bcl-2 plays a role in modulating Notch1 function in T cells.
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Targeting Notch signaling for cancer therapeutic intervention. ADVANCES IN PHARMACOLOGY (SAN DIEGO, CALIF.) 2012; 65:191-234. [PMID: 22959027 DOI: 10.1016/b978-0-12-397927-8.00007-5] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The Notch signaling pathway is an evolutionarily conserved, intercellular signaling cascade. The Notch proteins are single-pass receptors that are activated upon interaction with the Delta (or Delta-like) and Jagged/Serrate families of membrane-bound ligands. Association of ligand-receptor leads to proteolytic cleavages that liberate the Notch intracellular domain (NICD) from the plasma membrane. The NICD translocates to the nucleus, where it forms a complex with the DNA-binding protein CSL, displacing a histone deacetylase (HDAc)-corepressor (CoR) complex from CSL. Components of a transcriptional complex, such as MAML1 and histone acetyltransferases (HATs), are recruited to the NICD-CSL complex, leading to the transcriptional activation of Notch target genes. The Notch signaling pathway plays a critical role in cell fate decision, tissue patterning, morphogenesis, and is hence regarded as a developmental pathway. However, if this pathway goes awry, it contributes to cellular transformation and tumorigenesis. There is mounting evidence that this pathway is dysregulated in a variety of malignancies, and can behave as either an oncogene or a tumor suppressor depending upon cell context. This chapter highlights the current evidence for aberration of the Notch signaling pathway in a wide range of tumors from hematological cancers, such as leukemia and lymphoma, through to lung, skin, breast, pancreas, colon, prostate, ovarian, brain, and liver tumors. It proposes that the Notch signaling pathway may represent novel target for cancer therapeutic intervention.
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Shi S, Yao W, Xu J, Long J, Liu C, Yu X. Combinational therapy: new hope for pancreatic cancer? Cancer Lett 2011; 317:127-35. [PMID: 22138436 DOI: 10.1016/j.canlet.2011.11.029] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2011] [Revised: 11/22/2011] [Accepted: 11/23/2011] [Indexed: 02/06/2023]
Abstract
Pancreatic cancer is a devastating disease with a low overall survival rate. Chemotherapy is the most common treatment for patients presenting with advanced pancreatic cancer. Gemcitabine achieves a modest improvement in overall survival and is the gold standard for advanced pancreatic cancer treatment. Capecitabine and S-1, derivatives of 5-fluorouracil (5-FU), offers minimal clinical benefits. Folfirinox represents a new and aggressive regimen that might benefit patients of metastatic pancreatic cancer with good performance status. Other chemotherapy drugs such as platinums and irinotecan do not provide significant improvement in overall survival, but have been used as part of combinational therapies. Comparing to systemically delivered chemotherapy, regional intra-arterial chemotherapy achieves higher local drug concentration in tumors with lower systemic drug toxicity, and may serve as a better treatment regimen. Although there have been progress made in chemotherapeutic strategies against pancreatic cancer, the overall survival is not significantly improved in the last decade. Recently, development of chemotherapy in combination with molecular targeted therapies holds great promise in pancreatic cancer treatment, especially in patients with metastatic disease. Growing bodies of preclinical and clinical evidences indicate that the combination of conventional modalities with specific molecular targeted therapy increase the efficacy of the monotherapy without an increase in toxicity. In this review, we summarized the current regimens of chemotherapy and molecular targeted therapy for advanced pancreatic cancer and highlighted the novel combinational treatments tested in recent clinical trials.
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Affiliation(s)
- Si Shi
- Department of Pancreatic and Hepatobiliary Surgery, Fudan University, Shanghai Cancer Center, Shanghai 200032, China
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Network modeling of MDM2 inhibitor-oxaliplatin combination reveals biological synergy in wt-p53 solid tumors. Oncotarget 2011; 2:378-92. [PMID: 21623005 PMCID: PMC3248191 DOI: 10.18632/oncotarget.269] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Earlier we had shown that the MDM2 inhibitor (MI-219) belonging to the spiro-oxindole family can synergistically enhance the efficacy of platinum chemotherapeutics leading to 50% tumor free survival in a genetically complex pancreatic ductal adenocarcinoma (PDAC) xenograft model. In this report, we have taken a systems and network modeling approach in order to understand central mechanisms behind MI219-oxaliplatin synergy with validation in PDAC, colon and breast cancer cell lines. Microarray profiling of drug treatments (MI-219, oxaliplatin or their combination) in capan-2 cells reveal a similar unique set of gene alterations that is duplicated in other solid tumor cells. As single agent, MI-219 or oxaliplatin induced alterations in 48 and 761 genes respectively. The combination treatment resulted in 767 gene alterations with emergence of 286 synergy unique genes. Ingenuity network modeling of combination and synergy unique genes showed the crucial role of five key local networks CREB, CARF, EGR1, NF-kB and E Cadherin. The network signatures were validated at the protein level in all three cell lines. Individually silencing central nodes in these five hubs resulted in abrogation of MI-219-oxaliplatin activity confirming their critical role in aiding p53 mediated apoptotic response. We anticipate that our MI219-oxaliplatin network blueprints can be clinically translated in the rationale design and application of this unique therapeutic combination in a genetically pre-defined subset of patients.
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Small molecular anticancer agent SKLB703 induces apoptosis in human hepatocellular carcinoma cells via the mitochondrial apoptotic pathway invitro and inhibits tumor growth invivo. Cancer Lett 2011; 313:44-53. [PMID: 21944661 DOI: 10.1016/j.canlet.2011.08.025] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2011] [Revised: 08/21/2011] [Accepted: 08/22/2011] [Indexed: 02/05/2023]
Abstract
Inducing apoptosis is a promising therapeutic approach to overcome cancer. Here we described that a novel synthesized compound, 3-amino-N-(4-chlorobenzyl)-6-(3-methoxyphenyl)thieno[2,3-b]pyridine-2-carboxamide (SKLB703), exhibits antitumor activity via inducing apoptosis both invitro and invivo. Our results showed that SKLB703 inhibited the proliferation of a panel of human cancer cell lines, and human hepatocellular carcinoma cell line HepG2 was the most sensitive. The proliferation inhibitory effect of SKLB703 was associated with its apoptosis-inducing effect by activating caspase-3 and caspase-9 rather than caspase 8. Exposure of HepG2 to SKLB703 also resulted in Bax upregulation, Bcl-2 downregulation, cytochrome c release and mitochondrial transmembrane potential change in mitochondrial apoptotic pathway. Moreover, the decrease of phosphorylated p 44/42 mitogen-activated protein kinase and phosphorylated Akt was observed. SKLB703 suppressed the growth of established tumors in xenograft models in mice, whereas no toxicity was exhibited. TUNAL analysis showed that SKLB703 induced HepG2 tumor apoptosis. Taken together, the present study demonstrates that SKLB730 exhibits its antitumor activity through inducing apoptosis via mitochondrial apoptotic pathway. Its potential to be a candidate of anticancer agent is worth being further investigated.
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Subramaniam D, Nicholes ND, Dhar A, Umar S, Awasthi V, Welch DR, Jensen RA, Anant S. 3,5-bis(2,4-difluorobenzylidene)-4-piperidone, a novel compound that affects pancreatic cancer growth and angiogenesis. Mol Cancer Ther 2011; 10:2146-56. [PMID: 21890747 DOI: 10.1158/1535-7163.mct-11-0399] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Dysregulated Notch signaling plays an important role in the progression of cancer. Notch signaling affects tumor growth and angiogenesis through the actions of its ligand Jagged-1. In this study, we developed a novel compound 3,5-bis(2,4-difluorobenzylidene)-4-piperidone (DiFiD) and determined that it inhibits cancer cell growth and its effects on Notch signaling. Intraperitoneal administration of DiFiD significantly suppressed growth of pancreatic cancer tumor xenografts. There was a reduction in CD31-positive blood vessels, suggesting that there was an effect on angiogenesis. In vitro, DiFiD inhibited the proliferation of various human and mouse pancreatic cancer cells while increasing activated caspase-3. Cell-cycle analyses showed that DiFiD induced G(2)-M arrest and decreased the expression of cell-cycle-related proteins cyclin A1 and D1 while upregulating cyclin-dependent kinase inhibitor p21WAF1. We next determined the mechanism of action. DiFiD reduced Notch-1 activation, resulting in reduced expression of its downstream target protein Hes-1. We further determined that the reduced Notch-1 activation was due to reduction in the ligand Jagged-1 and two critical components of the γ-secretase enzyme complex presenilin-1 and nicastrin. Ectopic expression of the Notch intracellular domain rescued the cells from DiFiD-mediated growth suppression. DiFiD-treated tumor xenografts also showed reduced levels of Jagged-1 and the γ-secretase complex proteins presenilin-1 and nicastrin. Taken together, these data suggest that DiFiD is a novel potent therapeutic agent that can target different aspects of the Notch signaling pathway to inhibit both tumor growth and angiogenesis.
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Affiliation(s)
- Dharmalingam Subramaniam
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center, Kansas City, KS 66160, USA.
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