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Zhang Y, Li L, Ma X, Liu C, Liu G, Bie Z, Yang Z, Liu P. Quantitative proteomics identified a novel invasion biomarker associated with EMT in pituitary adenomas. Front Endocrinol (Lausanne) 2023; 14:1137648. [PMID: 36936141 PMCID: PMC10020714 DOI: 10.3389/fendo.2023.1137648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Accepted: 02/20/2023] [Indexed: 03/06/2023] Open
Abstract
BACKGROUND Complete resection of invasive pituitary adenoma is usually difficult, resulting in a high recurrence rate. Therefore, it is needed to find potential diagnostic markers and therapeutic targets for invasive pituitary adenoma. METHODS We collected samples from patients with invasive and non-invasive pituitary adenomas from Beijing Tiantan Hospital for protein extraction and quantitative analysis. We identified differential proteins (DEPs) by differential analysis of the two groups. The intersection of differential proteins related to invasion and epithelial-mesenchymal transition (EMT) in the GeneCards database was identified as EMT-DEPs. The protein network of EMT-DEPs was analyzed using the STRING database and Cytoscape software, and the hub EMT-DEPs were obtained by the MCC algorithm of the cytoHubba plugin. Correlation analysis was used to obtain the interpairing proteins among EMT-DEPs, and core EMT-DEPs were identified based on the number of paired proteins. The Venn program was used to identify the intersection of hub EMT-DEPs and core EMT-DEPs as key EMT-DEPs. Finally, a series of analyses plus experiments were used to verify the correlation of the target protein with invasion and EMT in pituitary adenoma. RESULTS Quantitative comparison of proteins between invasive and non-invasive pituitary adenomas indicated 833 differential proteins. The overlaps of EMT-related proteins and differential proteins consisted of 46 EMT-DEPs. There were 6 intersections between the hub EMT-DEPs and core EMT-DEPs. Using quantitative protein data and GSE169498 chip, we found that solute carrier family 2 member 1 (SLC2A1) was our target protein. SLC2A1 was significantly correlated with the invasiveness of pituitary adenoma, and the ROC curve was satisfactory. The functions and pathways of SLC2A1 and paired protein enrichment were closely linked to the EMT. Consistently, SLC2A1 expression was significantly and positively correlated with the expression of classical markers of EMT. The final experiment revealed that SLC2A1 was significantly upregulated in invasive pituitary adenoma. CONCLUSION SLC2A1 is significantly upregulated in invasive pituitary adenoma with satisfactory predictive value. It may regulate EMT. It may be a potential diagnostic marker for invasive pituitary adenoma.
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Affiliation(s)
- Yu Zhang
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Lei Li
- Central Laboratory, Capital Medical University, Beijing, China
| | - Xin Ma
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Chenan Liu
- Department of Gastrointestinal Surgery, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
| | - Gemingtian Liu
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Zhixu Bie
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Zhijun Yang
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
- *Correspondence: Zhijun Yang, ; Pinan Liu,
| | - Pinan Liu
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
- Department of Neural Reconstruction, Beijing Key Laboratory of Central Nervous System Injury, Beijing Neurosurgical Institute, Capital Medical University, Beijing, China
- *Correspondence: Zhijun Yang, ; Pinan Liu,
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Yilmaz D, Tuzer M, Unlu MB. Assessing the therapeutic response of tumors to hypoxia-targeted prodrugs with an in silico approach. MATHEMATICAL BIOSCIENCES AND ENGINEERING : MBE 2022; 19:10941-10962. [PMID: 36124576 DOI: 10.3934/mbe.2022511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Tumor hypoxia is commonly recognized as a condition stimulating the progress of the aggressive phenotype of tumor cells. Hypoxic tumor cells inhibit the delivery of cytotoxic drugs, causing hypoxic areas to receive insufficient amounts of anticancer agents, which results in adverse treatment responses. Being such an obstruction to conventional therapies for cancer, hypoxia might be considered a target to facilitate the efficacy of treatments in the resistive environment of tumor sites. In this regard, benefiting from prodrugs that selectively target hypoxic regions remains an effective approach. Additionally, combining hypoxia-activated prodrugs (HAPs) with conventional chemotherapeutic drugs has been used as a promising strategy to eradicate hypoxic cells. However, determining the appropriate sequencing and scheduling of the combination therapy is also of great importance in obtaining favorable results in anticancer therapy. Here, benefiting from a modeling approach, we study the efficacy of HAPs in combination with chemotherapeutic drugs on tumor growth and the treatment response. Different treatment schedules have been investigated to see the importance of determining the optimal schedule in combination therapy. The effectiveness of HAPs in varying hypoxic conditions has also been explored in the study. The model provides qualitative conclusions about the treatment response, as the maximal benefit is obtained from combination therapy with greater cell death for highly hypoxic tumors. It has also been observed that the antitumor effects of HAPs show a hypoxia-dependent profile.
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Affiliation(s)
- Defne Yilmaz
- Department of Physics, Bogazici University, Istanbul 34342, Turkey
- Center for Life Sciences and Technologies, Bogazici University, Istanbul 34342, Turkey
| | - Mert Tuzer
- Department of Physics, Bogazici University, Istanbul 34342, Turkey
- Center for Life Sciences and Technologies, Bogazici University, Istanbul 34342, Turkey
| | - Mehmet Burcin Unlu
- Department of Physics, Bogazici University, Istanbul 34342, Turkey
- Center for Life Sciences and Technologies, Bogazici University, Istanbul 34342, Turkey
- Global Station for Quantum Medical Science and Engineering, Global Institution for Collaborative Research and Education (GI-CoRE), Hokkaido University, Sapporo 060-8648, Japan
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Tao J, Yang G, Zhou W, Qiu J, Chen G, Luo W, Zhao F, You L, Zheng L, Zhang T, Zhao Y. Targeting hypoxic tumor microenvironment in pancreatic cancer. J Hematol Oncol 2021; 14:14. [PMID: 33436044 PMCID: PMC7805044 DOI: 10.1186/s13045-020-01030-w] [Citation(s) in RCA: 190] [Impact Index Per Article: 63.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Accepted: 12/25/2020] [Indexed: 12/13/2022] Open
Abstract
Attributable to its late diagnosis, early metastasis, and poor prognosis, pancreatic cancer remains one of the most lethal diseases worldwide. Unlike other solid tumors, pancreatic cancer harbors ample stromal cells and abundant extracellular matrix but lacks vascularization, resulting in persistent and severe hypoxia within the tumor. Hypoxic microenvironment has extensive effects on biological behaviors or malignant phenotypes of pancreatic cancer, including metabolic reprogramming, cancer stemness, invasion and metastasis, and pathological angiogenesis, which synergistically contribute to development and therapeutic resistance of pancreatic cancer. Through various mechanisms including but not confined to maintenance of redox homeostasis, activation of autophagy, epigenetic regulation, and those induced by hypoxia-inducible factors, intratumoral hypoxia drives the above biological processes in pancreatic cancer. Recognizing the pivotal roles of hypoxia in pancreatic cancer progression and therapies, hypoxia-based antitumoral strategies have been continuously developed over the recent years, some of which have been applied in clinical trials to evaluate their efficacy and safety in combinatory therapies for patients with pancreatic cancer. In this review, we discuss the molecular mechanisms underlying hypoxia-induced aggressive and therapeutically resistant phenotypes in both pancreatic cancerous and stromal cells. Additionally, we focus more on innovative therapies targeting the tumor hypoxic microenvironment itself, which hold great potential to overcome the resistance to chemotherapy and radiotherapy and to enhance antitumor efficacy and reduce toxicity to normal tissues.
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Affiliation(s)
- Jinxin Tao
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 1 Shuaifuyuan, Wangfujing Street, Beijing, 100730, China
| | - Gang Yang
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 1 Shuaifuyuan, Wangfujing Street, Beijing, 100730, China
| | - Wenchuan Zhou
- Department of Ophthalmology, Xinhua Hospital Affiliated to Shanghai JiaoTong University School of Medicine, Shanghai, 200092, China
| | - Jiangdong Qiu
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 1 Shuaifuyuan, Wangfujing Street, Beijing, 100730, China
| | - Guangyu Chen
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 1 Shuaifuyuan, Wangfujing Street, Beijing, 100730, China
| | - Wenhao Luo
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 1 Shuaifuyuan, Wangfujing Street, Beijing, 100730, China
| | - Fangyu Zhao
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 1 Shuaifuyuan, Wangfujing Street, Beijing, 100730, China
| | - Lei You
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 1 Shuaifuyuan, Wangfujing Street, Beijing, 100730, China
| | - Lianfang Zheng
- Department of Nuclear Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
| | - Taiping Zhang
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 1 Shuaifuyuan, Wangfujing Street, Beijing, 100730, China. .,Clinical Immunology Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China.
| | - Yupei Zhao
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 1 Shuaifuyuan, Wangfujing Street, Beijing, 100730, China.
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Abdel Hafez SMN, Allam FAFA, Elbassuoni E. Sex differences impact the pancreatic response to chronic immobilization stress in rats. Cell Stress Chaperones 2021; 26:199-215. [PMID: 32986228 PMCID: PMC7736456 DOI: 10.1007/s12192-020-01169-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Revised: 09/21/2020] [Accepted: 09/24/2020] [Indexed: 12/27/2022] Open
Abstract
Chronic stress has been related to multiple diseases. Inflammation is proposed strongly to link stress to stress-related diseases in different organs, such as small intestine, colon, and brain. However, stress cellular effect on the pancreatic tissue, especially the exocrine one, had received relatively little attention. This work aimed to evaluate the cellular effect of chronic immobilization stress on the pancreatic tissue function and structure along with evaluating the sex role in this type of pancreatic injury. Thirty rats were equally divided into 5 groups: control male, control female, stressed male, stressed female, and stressed female with bilateral ovariectomy. Stressed rats were exposed to immobilization for 1 h/day, 6 days/week, for 3 weeks. Rats were then decapitated for further biochemical, histological, histo-morphometric, and immunohistochemical study. The results showed that, in male and female rats, chronic immobilization stress produced hypoinsulinemia and hyperglycemia, with increasing exocrine pancreatic injury markers by increasing oxidative and inflammatory status of the pancreatic tissue, and exhibited a degenerative effect on the pancreatic tissue. However, the stress-induced pancreatic effects were more obvious in male rats and female rats with bilateral ovariectomy than that in female rats. It could be concluded that male animals were more susceptible to stress-induced pancreatic damage than females. The ovarian hormones are responsible, at least partly, for pancreatic tissue protection since the stress-induced pancreatic injury in females was exacerbated by ovariectomy. In this study, inflammatory and oxidative stress differences in both sexes could provide a plausible explanation for sex differences.
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Affiliation(s)
| | | | - Eman Elbassuoni
- Physiology Department, Faculty of Medicine, Minia University, Minia, Egypt
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Lu Q, Wang X, Zhu J, Fei X, Chen H, Li C. Hypoxic Tumor-Derived Exosomal Circ0048117 Facilitates M2 Macrophage Polarization Acting as miR-140 Sponge in Esophageal Squamous Cell Carcinoma. Onco Targets Ther 2020; 13:11883-11897. [PMID: 33239890 PMCID: PMC7682796 DOI: 10.2147/ott.s284192] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2020] [Accepted: 10/29/2020] [Indexed: 12/21/2022] Open
Abstract
Introduction Hypoxia and tumor-associated macrophage (TAM) are key regulators in remodeling the microenvironment of esophageal squamous cell carcinoma (ESCC). Hypoxia could stimulate tumor cells to secrete more exosomes and activate TAMs to M2 type. Here, we investigated the function and the underlying mechanism of tumor-derived exosomal hsa-circ-0048117 in TAM polarization in ESCC. Collectively, these data indicate that PC cells generate miR-301a-3p-rich exosomes in a hypoxic microenvironment, which then polarize macrophages to promote malignant behaviors of PC cells. Methods Transmission electron microscopy (TEM) and nanoparticle tracking analysis (NTA) were used to analyze the physical characteristics of exosomes. High-throughput sequencing and bioinformatic analysis were performed to screen the potential exosomal circRNA. FISH, Ago2 RIP, pull-down and dual-luciferase reporter assay were conducted to figure out the correlation among hsa-circ-0048117, miR-140 and toll-like receptor 4 (TLR4). Flow cytometry and Western blot were used to evaluate their joint effect in macrophages polarization. Then, the invasion and migration ability were evaluated by transwell experiment. At last, serum exo-hsa-circ-0048117 in ESCC patients was compared and the correlation between its expression and T stage, N stage and TNM grades was analyzed. Results Hsa-circ-0048117 was significantly upregulated and enriched in exosomes secreted by hypoxia pre-challenged tumor cells and contributed to M2 macrophage polarization. Hsa-circ-0048117 depletion in macrophage led to inhibition of M2 polarization while restoration of hsa-circ-0048117 could rescue the process. Moreover, hsa-circ-0048117 could act as sponge of miR-140 by competing with TLR4 to facilitate the M2 macrophage polarization. Exo-hsa-circ-0048117 could be transmitted to macrophages to promote M2 polarization and M2 macrophages could enhance the ability of invasion and migration of tumor cells by secreting Arg1, IL-10 and TGF-β. Higher serum exo-hsa-circ-0048117 predicted an advanced T and N stage and positively correlated with TNM grade. Conclusion Our findings indicated that ESCC cells generate hsa-circ-0048117-rich exosomes in a hypoxic microenvironment; hsa-circ-0048117 was believed to promote M2 macrophage polarization which favors the malignant behaviors of ESCC cells. These results reminded us that exosomal hsa-circ-0048117 may play a key role in remodeling the microenvironment and modulating progression in ESCC.
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Affiliation(s)
- Qijue Lu
- Department of Thoracic Surgery, Changhai Hospital, The Second Military Medical University, Shanghai, People's Republic of China
| | - Xinyu Wang
- Department of Thoracic Surgery, Changhai Hospital, The Second Military Medical University, Shanghai, People's Republic of China
| | - Ji Zhu
- Department of Thoracic Surgery, Changhai Hospital, The Second Military Medical University, Shanghai, People's Republic of China
| | - Xiang Fei
- Department of Thoracic Surgery, Changhai Hospital, The Second Military Medical University, Shanghai, People's Republic of China
| | - Hezhong Chen
- Department of Thoracic Surgery, Changhai Hospital, The Second Military Medical University, Shanghai, People's Republic of China
| | - Chunguang Li
- Department of Thoracic Surgery, Changhai Hospital, The Second Military Medical University, Shanghai, People's Republic of China
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Ma TT, Wang L, Wang JL, Liu YJ, Chen YC, He HJ, Song Y. Hypoxia-Induced Cleavage Of Soluble ephrinA1 From Cancer Cells Is Mediated By MMP-2 And Associates With Angiogenesis In Oral Squamous Cell Carcinoma. Onco Targets Ther 2019; 12:8491-8499. [PMID: 31686863 PMCID: PMC6799903 DOI: 10.2147/ott.s213252] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Accepted: 09/18/2019] [Indexed: 01/07/2023] Open
Abstract
INTRODUCTION ephrinA1 plays important roles in tumor angiogenesis. Matrix metalloproteases (MMPs) can cleave ephrinA1 from the cell membrane into extracellular environment. However, how soluble ephrinA1 is modulated by hypoxia and whether MMPs participate in this hypoxic process remains to be investigated in detail. METHODS Thirty-seven patients with oral squamous cell carcinoma (OSCC) were included in the present study for HIF-1α, MMP-2, MMP-9 and ephrinA1 detection by immunohistochemistry. Serum samples from 35 patients were collected both preoperatively and postoperatively to confirm the existence of soluble ephrinA1 by ELISA. Block assay and Western blot analysis were further carried out to elucidate the proteolysis mechanism of ephrinA1 under hypoxic condition in vitro. RESULTS Our data demonstrated that HIF-1α, MMP-2, MMP-9 and ephrinA1 expressed positively, and correlated with microvessel density in OSCCs, except for MMP-9. The serum expression level of ephrinA1 in OSCC patients decreased significantly after surgical removal of the solid tumors. In vitro experiments indicated that GM6001, a MMP-specific inhibitor, could reduce hypoxia-induced soluble ephrinA1 secretion from SCC cells. Further Western blot analysis confirmed that both HIF-1α and MMP-2 were up-regulated by hypoxia in a similar time-dependent manner, with the MMP-9 expression unchanged during this course. CONCLUSION These results suggested a possible novel mechanism that ephrinA1 secretion is mediated by HIF-1α/MMP-2 signaling cascade which may play pivotal roles in OSCC neovascularization in a paracrine manner.
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Affiliation(s)
- Ting-Ting Ma
- Department of Stomatology, Liuzhou People’s Hospital, Guangxi, People’s Republic of China
| | - Lin Wang
- Department of Oral and Maxillofacial-Head and Neck Oncology, School and Hospital of Stomatology, Wuhan University, Wuhan, People’s Republic of China
| | - Jun-Lin Wang
- Department of Stomatology, Liuzhou People’s Hospital, Guangxi, People’s Republic of China
| | - Yan-Jie Liu
- Department of Stomatology, Liuzhou People’s Hospital, Guangxi, People’s Republic of China
| | - Yu-Cong Chen
- Department of Stomatology, Liuzhou People’s Hospital, Guangxi, People’s Republic of China
| | - Hu-Jie He
- Department of Stomatology, Liuzhou People’s Hospital, Guangxi, People’s Republic of China
| | - Yong Song
- Department of Stomatology, Liuzhou People’s Hospital, Guangxi, People’s Republic of China
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Kagawa Y, Umaru BA, Ariful I, Shil SK, Miyazaki H, Yamamoto Y, Ogata M, Owada Y. Role of FABP7 in tumor cell signaling. Adv Biol Regul 2019; 71:206-218. [PMID: 30245263 DOI: 10.1016/j.jbior.2018.09.006] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Revised: 09/13/2018] [Accepted: 09/13/2018] [Indexed: 06/08/2023]
Abstract
Lipids are major molecules for the function of organisms and are involved in the pathophysiology of various diseases. Fatty acids (FAs) signaling and their metabolism are some of the most important pathways in tumor development, as lipids serve as energetic sources during carcinogenesis. Fatty acid binding proteins (FABPs) facilitate FAs transport to different cell organelles, modulating their metabolism along with mediating other physiological activities. FABP7, brain-typed FABP, is thought to be an important molecule for cell proliferation in healthy as well as diseased organisms. Several studies on human tumors and tumor-derived cell lines put FABP7 in the center of tumorigenesis, and its high expression level has been reported to correlate with poor prognosis in different tumor types. Several types of FABP7-expressing tumors have shown an up-regulation of cell signaling activity, but molecular mechanisms of FABP7 involvement in tumorigenesis still remain elusive. In this review, we focus on the expression and function of FABP7 in different tumors, and possible mechanisms of FABP7 in tumor proliferation and migration.
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Affiliation(s)
- Yoshiteru Kagawa
- Department of Organ Anatomy, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Banlanjo A Umaru
- Department of Organ Anatomy, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Islam Ariful
- Department of Organ Anatomy, Tohoku University Graduate School of Medicine, Sendai, Japan; Department of Pharmacy, University of Rajshahi, Rajshahi, Bangladesh
| | - Subrata Kumar Shil
- Department of Organ Anatomy, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Hirofumi Miyazaki
- Department of Organ Anatomy, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Yui Yamamoto
- Department of Organ Anatomy, Tohoku University Graduate School of Medicine, Sendai, Japan; Department of Anatomy, Tohoku Medical and Pharmaceutical University, Sendai, Japan
| | - Masaki Ogata
- Department of Organ Anatomy, Tohoku University Graduate School of Medicine, Sendai, Japan; Department of Anatomy, Tohoku Medical and Pharmaceutical University, Sendai, Japan
| | - Yuji Owada
- Department of Organ Anatomy, Tohoku University Graduate School of Medicine, Sendai, Japan.
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Xu H, Yuan Y, Wu W, Zhou M, Jiang Q, Niu L, Ji J, Liu N, Zhang L, Wang X. Hypoxia stimulates invasion and migration of human cervical cancer cell lines HeLa/SiHa through the Rab11 trafficking of integrin αvβ3/FAK/PI3K pathway-mediated Rac1 activation. J Biosci 2018; 42:491-499. [PMID: 29358562 DOI: 10.1007/s12038-017-9699-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Hypoxia plays a key role in tumour cell survival, invasion, and metastasis. An increasing number of studies have attempted to characterize the tumour response to hypoxia and to identify predictive markers of disease. Here we show that hypoxia increases tumour cell invasion and migration by the modulation of Rab11, an important molecule for vesicular trafficking. In our study, we found that Rab11, together with the activation of Rac1, could stimulate invasion and migration of cervical cancer cell lines HeLa/SiHa in hypoxia. Activation of Rac1 activity by hypoxia seems to be central to carcinoma invasion. We also found that these effects could be related to the integrin αvβ3. In addition, we studied the molecular pathway for this process. Our results showed that in cervical cancer cell lines HeLa/SiHa, Rac1 activation in hypoxia could stimulate invasion and migration, and this process was mediated by integrin αvβ3-mediated FAK and PI3K phosphorylation. Furthermore, hypoxia induced a dramatic increase in αvβ3 integrin surface expression, and this increase is dependent on Rab11. In conclusion, our study might provide a new mechanism for the effect of hypoxia on stimulating cervical carcinoma invasion.
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Affiliation(s)
- Hao Xu
- Department of Radiotherapy, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
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Xu J, Chen L, Li L. Pannexin hemichannels: A novel promising therapy target for oxidative stress related diseases. J Cell Physiol 2017; 233:2075-2090. [PMID: 28295275 DOI: 10.1002/jcp.25906] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Accepted: 03/09/2017] [Indexed: 12/16/2022]
Abstract
Pannexins, which contain three subtypes: pannexin-1, -2, and -3, are vertebrate glycoproteins that form non-junctional plasma membrane intracellular hemichannels via oligomerization. Oxidative stress refers to an imbalance of the generation and elimination of reactive oxygen species (ROS). Studies have shown that elevated ROS levels are pivotal in the development of a variety of diseases. Recent studies indicate that the occurrence of these oxidative stress related diseases is associated with pannexin hemichannels. It is also reported that pannexins regulate the production of ROS which in turn may increase the opening of pannexin hemichannels. In this paper, we review recent researches about the important role of pannexin hemichannels in oxidative stress related diseases. Thus, pannexin hemichannels, novel therapeutic targets, hold promise in managing oxidative stress related diseases such as the tumor, inflammatory bowel diseases (IBD), pulmonary fibrosis, chronic obstructive pulmonary disease (COPD), cardiovascular disease, insulin resistance (IR), and neural degeneration diseases.
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Affiliation(s)
- Jin Xu
- Learning Key Laboratory for Pharmacoproteomics, Institute of Pharmacy and Pharmacology, University of South China, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Hengyang, P. R. China
| | - Linxi Chen
- Learning Key Laboratory for Pharmacoproteomics, Institute of Pharmacy and Pharmacology, University of South China, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Hengyang, P. R. China
| | - Lanfang Li
- Learning Key Laboratory for Pharmacoproteomics, Institute of Pharmacy and Pharmacology, University of South China, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Hengyang, P. R. China
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Lee JW, Ryu YK, Ji YH, Kang JH, Moon EY. Hypoxia/reoxygenation-experienced cancer cell migration and metastasis are regulated by Rap1- and Rac1-GTPase activation via the expression of thymosin beta-4. Oncotarget 2016; 6:9820-33. [PMID: 25888632 PMCID: PMC4496400 DOI: 10.18632/oncotarget.3218] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2014] [Accepted: 01/26/2015] [Indexed: 11/25/2022] Open
Abstract
Signaling by small guanosine triphosphatases (GTPase), Rap1/Rac1, is one of the major pathways controlling cancer cell migration and tumor metastasis. Thymosin beta-4 (Tβ4), an actin-sequestering protein, has been shown to increase migration of cancer cells. Episodes of hypoxia and re-oxygenation (H/R) are an important phenomenon in tumor microenvironment (TME). We investigated whether Tβ4 could play as an intermediary to crosstalk between Rac1- and Rap1- GTPase activation under hypoxia/reoxygenation (H/R) conditions. Inhibition of Tβ4 expression using transcription activator-like effector nucleases (TALEN) significantly decreased lung metastasis of B16F10 cells. Rac1 and Rap1 activity, as well as cancer cell migration, increased following induction of Tβ4 expression in normoxia- or H/R-experienced cells, but were barely detectable in Tβ4-depleted cells. Rap1-regulated Rac1 activity was decreased by a dominant negative Rap1 (Rap1N17), and increased by 8-(4-chloro-phenylthio)-2'-O-methyladenosine-3',5'-cyclic monophosphate (CPT), a Rap1 activator. In contrast, a Rac1-specific inhibitor, NSC23766, and dominant negative Rac1 (Rac1N17) enhanced Tβ4 expression and aberrant Rap1 activity. While NSC23766 and Rac1N17 incompletely inhibited tumor metastasis in vivo, and H/R-experienced cancer cell migration in vitro, more efficient attenuation of cancer cell migration was accomplished by simultaneous inactivation of Rap1 and Rac1 with Rap1N17 and Rac1N17, respectively. These data suggest that a combination therapy targeting both Rap1 and Rac1 activity may be an effective method of inhibiting tumor metastasis.
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Affiliation(s)
- Jae-Wook Lee
- Department of Bioscience and Biotechnology, Sejong University, Seoul 143-747, Korea
| | - Yun-Kyoung Ryu
- Department of Bioscience and Biotechnology, Sejong University, Seoul 143-747, Korea
| | - Young-Hoon Ji
- Research Center for Radiotherapy, Korea Institute of Radiological and Medical Science, Seoul 139-709, Korea
| | - Joo Hyun Kang
- Molecular Imaging Research Center, Korea Institute of Radiological and Medical Science, Seoul 139-709, Korea
| | - Eun-Yi Moon
- Department of Bioscience and Biotechnology, Sejong University, Seoul 143-747, Korea
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Brandi J, Dalla Pozza E, Dando I, Biondani G, Robotti E, Jenkins R, Elliott V, Park K, Marengo E, Costello E, Scarpa A, Palmieri M, Cecconi D. Secretome protein signature of human pancreatic cancer stem-like cells. J Proteomics 2016; 136:1-12. [PMID: 26850699 DOI: 10.1016/j.jprot.2016.01.017] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Revised: 01/04/2016] [Accepted: 01/25/2016] [Indexed: 02/08/2023]
Abstract
UNLABELLED Emerging research has demonstrated that pancreatic ductal adenocarcinoma (PDAC) contains a sub-population of cancer stem cells (CSCs) characterized by self-renewal, anchorage-independent-growth, long-term proliferation and chemoresistance. The secretome analysis of pancreatic CSCs has not yet been performed, although it may provide insight into tumour/microenvironment interactions and intracellular processes, as well as to identify potential biomarkers. To characterize the secreted proteins of pancreatic CSCs, we performed an iTRAQ-based proteomic analysis to compare the secretomes of Panc1 cancer stem-like cells (Panc1 CSCs) and parental cell line. A total of 72 proteins were found up-/down-regulated in the conditioned medium of Panc1 CSCs. The pathway analysis revealed modulation of vital physiological pathways including glycolysis, gluconeogenesis and pentose phosphate. Through ELISA immunoassays we analysed the presence of the three proteins most highly secreted by Panc1 CSCs (ceruloplasmin, galectin-3, and MARCKS) in sera of PDAC patient. ROC curve analysis suggests ceruloplasmin as promising marker for patients negative for CA19-9. Overall, our study provides a systemic secretome analysis of pancreatic CSCs revealing a number of secreted proteins which participate in pathological conditions including cancer differentiation, invasion and metastasis. They may serve as a valuable pool of proteins from which biomarkers and therapeutic targets can be identified. BIOLOGICAL SIGNIFICANCE The secretome of CSCs is a rich reservoir of biomarkers of cancer progression and molecular therapeutic targets, and thus is a topic of great interest for cancer research. The secretome analysis of pancreatic CSCs has not yet been performed. Recently, our group has demonstrated that Panc-1 CSCs isolated from parental cell line by using the CSC selective medium, represent a model of great importance to deepen the understanding of the biology of pancreatic adenocarcinoma. To our knowledge, this is the first proteomic study of pancreatic CSC secretome. We performed an iTRAQ-based analysis to compare the secretomes of Panc1 CSCs and Panc1 parental cell line and identified a total of 43 proteins secreted at higher level by pancreatic cancer stem cells. We found modulation of different vital physiological pathways (such as glycolysis and gluconeogenesis, pentose phosphate pathway) and the involvement of CSC secreted proteins (for example 72kDa type IV collagenase, galectin-3, alpha-actinin-4, and MARCKS) in pathological conditions including cancer differentiation, invasion and metastasis. By ELISA verification we found that MARCKS and ceruloplasmin discriminate between controls and PDAC patients; in addition ROC curve analyses indicate that MARCKS does not have diagnostic accuracy, while ceruloplasmin could be a promising marker only for patients negative for CA19-9. We think that the findings reported in our manuscript advance the understanding of the pathways implicated in tumourigenesis, metastasis and chemoresistance of pancreatic cancer, and also identify a pool of proteins from which novel candidate diagnostic and therapeutic biomarkers could be discovered.
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Affiliation(s)
- Jessica Brandi
- University of Verona, Department of Biotechnology, Proteomics and Mass Spectrometry Laboratory, Verona 37134, Italy
| | - Elisa Dalla Pozza
- University of Verona, Department of Life and Reproduction Sciences, Verona 37134, Italy
| | - Ilaria Dando
- University of Verona, Department of Life and Reproduction Sciences, Verona 37134, Italy
| | - Giulia Biondani
- University of Verona, Department of Life and Reproduction Sciences, Verona 37134, Italy
| | - Elisa Robotti
- University of Piemonte Orientale, Department of Sciences and Technological Innovation, Alessandria 15121, Italy
| | - Rosalind Jenkins
- University of Liverpool, MRC Centre for Drug Safety Science, Department of Molecular & Clinical Pharmacology, Liverpool L69 3GE, United Kingdom
| | - Victoria Elliott
- NIHR Liverpool Pancreas Biomedical Research Unit, Department of Molecular and Therapeutic Cancer Medicine, Liverpool L69 3GA, United Kingdom
| | - Kevin Park
- University of Liverpool, MRC Centre for Drug Safety Science, Department of Molecular & Clinical Pharmacology, Liverpool L69 3GE, United Kingdom
| | - Emilio Marengo
- University of Piemonte Orientale, Department of Sciences and Technological Innovation, Alessandria 15121, Italy
| | - Eithne Costello
- NIHR Liverpool Pancreas Biomedical Research Unit, Department of Molecular and Therapeutic Cancer Medicine, Liverpool L69 3GA, United Kingdom
| | - Aldo Scarpa
- University and Hospital Trust of Verona, Applied Research on Cancer Network (ARC-NET) and Department of Pathology and Diagnostics, Verona 37134, Italy
| | - Marta Palmieri
- University of Verona, Department of Life and Reproduction Sciences, Verona 37134, Italy.
| | - Daniela Cecconi
- University of Verona, Department of Biotechnology, Proteomics and Mass Spectrometry Laboratory, Verona 37134, Italy
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Zhao W, Lu M, Zhang Q. Chloride intracellular channel 1 regulates migration and invasion in gastric cancer by triggering the ROS-mediated p38 MAPK signaling pathway. Mol Med Rep 2015; 12:8041-7. [PMID: 26497050 PMCID: PMC4758331 DOI: 10.3892/mmr.2015.4459] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2014] [Accepted: 09/24/2015] [Indexed: 01/10/2023] Open
Abstract
Chloride intracellular channel 1 (CLIC1) has been demonstrated to be overexpressed in gastric cancer, and elevated CLIC1 expression levels are markedly associated with the processes of tumor cell migration and invasion. However, the regulatory mechanism and signaling pathway underlying these processes have remained to be elucidated. The present study examined the impact of N-acetyl cysteine (NAC), indanyloxyacetic acid (IAA)-94 and SB203580, inhibitors of reactive oxygen species (ROS), as well as CLIC1 and p38 mitogen-activated protein kinase (MAPK) on the migration and invasion of SGC-7901 gastric cancer cells in a hypoxia-reoxygenation (H-R) microenvironment. The results demonstrated that intracellular ROS and CLIC1 levels were increased under H-R conditions, and that functional inhibition of CLIC1 significantly decreased the H-R-elevated ROS generation and p-p38 MAPK levels in SGC-7901 cells, as well as inhibited the migration and invasion of SGC-7901 cells. In addition, the expression levels of MMP-2 and MMP-9 were inhibited by NAC, IAA-94 and SB203580. These results indicated that CLIC1 regulates gastric cancer-cell migration and invasion via the ROS-mediated p38 MAPK signaling pathway.
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Affiliation(s)
- Wei Zhao
- Department of General Surgery, People's Hospital of Laiwu, Laiwu, Shandong 271100, P.R. China
| | - Mingshu Lu
- Department of General Surgery, People's Hospital of Laiwu, Laiwu, Shandong 271100, P.R. China
| | - Qiwen Zhang
- Department of General Surgery, People's Hospital of Laiwu, Laiwu, Shandong 271100, P.R. China
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Abstract
Oxygen is the basic molecule which supports life and it truly is "god's gift to life." Despite its immense importance, research on "oxygen biology" has never received the light of the day and has been limited to physiological and biochemical studies. It seems that in modern day biology, oxygen research is summarized in one word "hypoxia." Scientists have focused on hypoxia-induced transcriptomics and molecular-cellular alterations exclusively in disease models. Interestingly, the potential of oxygen to control the basic principles of biology like homeostatic maintenance, transcription, replication, and protein folding among many others, at the molecular level, has been completely ignored. Here, we present a perspective on the crucial role played by oxygen in regulation of basic biological phenomena. Our conclusion highlights the importance of establishing novel research areas like oxygen biology, as there is great potential in this field for basic science discoveries and clinical benefits to the society.
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Li K, Pang J, Cheng H, Liu WP, Di JM, Xiao HJ, Luo Y, Zhang H, Huang WT, Chen MK, Li LY, Shao CK, Feng YH, Gao X. Manipulation of prostate cancer metastasis by locus-specific modification of the CRMP4 promoter region using chimeric TALE DNA methyltransferase and demethylase. Oncotarget 2015; 6:10030-44. [PMID: 25888628 PMCID: PMC4496338 DOI: 10.18632/oncotarget.3192] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Accepted: 01/25/2015] [Indexed: 01/08/2023] Open
Abstract
Prostate cancer is the most commonly diagnosed non-cutaneous cancer and one of the leading causes of cancer death for North American men. Whereas localized prostate cancer can be cured, there is currently no cure for metastatic prostate cancer. Here we report a novel approach that utilizes designed chimeric transcription activator-like effectors (dTALEs) to control prostate cancer metastasis. Transfection of dTALEs of DNA methyltransferase or demethylase induced artificial, yet active locus-specific CpG and subsequent histone modifications. These manipulations markedly altered expression of endogenous CRMP4, a metastasis suppressor gene. Remarkably, locus-specific CpG demethylation of the CRMP4 promoter in metastatic PC3 cells abolished metastasis, whereas locus-specific CpG methylation of the promoter in non-metastatic 22Rv1 cells induced metastasis. CRMP4-mediated metastasis suppression was found to require activation of Akt/Rac1 signaling and down-regulation of MMP-9 expression. This proof-of-concept study with dTALEs for locus-specific epigenomic manipulation validates the selected CpG methylation of CRMP4 gene as an independent biomarker for diagnosis and prognosis of prostate cancer metastasis and opens up a novel avenue for mechanistic research on cancer biology.
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Affiliation(s)
- Ke Li
- Department of Urology, the Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510630, China
| | - Jun Pang
- Department of Urology, the Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510630, China
| | - Huaiyan Cheng
- Department of Pharmacology, Uniformed Services University of the Health Sciences, Bethesda MD20814, USA
| | - Wei-Peng Liu
- Department of Urology, the First Affiliated Hospital of Nan Chang University, Nanchang 330006, China
| | - Jin-Ming Di
- Department of Urology, the Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510630, China
| | - Heng-Jun Xiao
- Department of Urology, the Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510630, China
| | - Yun Luo
- Department of Urology, the Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510630, China
| | - Hao Zhang
- Department of Urology, the Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510630, China
| | - Wen-Tao Huang
- Department of Urology, the Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510630, China
| | - Ming-Kun Chen
- Department of Urology, the Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510630, China
| | - Liao-Yuan Li
- Department of Urology, the Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510630, China
| | - Chun-Kui Shao
- Department of Pathology, the Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510630, China
| | - Ying-Hong Feng
- Department of Pharmacology, Uniformed Services University of the Health Sciences, Bethesda MD20814, USA
| | - Xin Gao
- Department of Urology, the Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510630, China
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15
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Delayed treatment with NSC23766 in streptozotocin-induced diabetic rats ameliorates post-ischemic neuronal apoptosis through suppression of mitochondrial p53 translocation. Neuropharmacology 2014; 85:508-16. [DOI: 10.1016/j.neuropharm.2014.06.008] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2014] [Revised: 06/03/2014] [Accepted: 06/05/2014] [Indexed: 11/19/2022]
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16
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Acosta MA, Jiang X, Huang PK, Cutler KB, Grant CS, Walker GM, Gamcsik MP. A microfluidic device to study cancer metastasis under chronic and intermittent hypoxia. BIOMICROFLUIDICS 2014; 8:054117. [PMID: 25584114 PMCID: PMC4290574 DOI: 10.1063/1.4898788] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2014] [Accepted: 10/08/2014] [Indexed: 05/12/2023]
Abstract
Metastatic cancer cells must traverse a microenvironment ranging from extremely hypoxic, within the tumor, to highly oxygenated, within the host's vasculature. Tumor hypoxia can be further characterized by regions of both chronic and intermittent hypoxia. We present the design and characterization of a microfluidic device that can simultaneously mimic the oxygenation conditions observed within the tumor and model the cell migration and intravasation processes. This device can generate spatial oxygen gradients of chronic hypoxia and produce dynamically changing hypoxic microenvironments in long-term culture of cancer cells.
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Affiliation(s)
- Miguel A Acosta
- UNC/NCSU Joint Department of Biomedical Engineering, North Carolina State University , 4206D Engineering Building III, 911 Oval Drive, Raleigh, North Carolina 27695-7115, USA
| | - Xiao Jiang
- UNC/NCSU Joint Department of Biomedical Engineering, North Carolina State University , 4206D Engineering Building III, 911 Oval Drive, Raleigh, North Carolina 27695-7115, USA
| | - Pin-Kang Huang
- Department of Chemical Engineering, National Taiwan University of Science and Technology , No. 43, Sec. 4, Keelung Road, Da'an District, Taipei City 106, Taiwan
| | - Kyle B Cutler
- Department of Biomedical Engineering, Beckman Laser Institute, University of California Irvine , 1002 Health Services Road, Irvine, California 92617, USA
| | - Christine S Grant
- UNC/NCSU Joint Department of Biomedical Engineering, North Carolina State University , 4206D Engineering Building III, 911 Oval Drive, Raleigh, North Carolina 27695-7115, USA
| | - Glenn M Walker
- UNC/NCSU Joint Department of Biomedical Engineering, North Carolina State University , 4206D Engineering Building III, 911 Oval Drive, Raleigh, North Carolina 27695-7115, USA
| | - Michael P Gamcsik
- Department of Chemical Engineering, National Taiwan University of Science and Technology , No. 43, Sec. 4, Keelung Road, Da'an District, Taipei City 106, Taiwan
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17
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Wang P, Zeng Y, Liu T, Zhang C, Yu PW, Hao YX, Luo HX, Liu G. Chloride intracellular channel 1 regulates colon cancer cell migration and invasion through ROS/ERK pathway. World J Gastroenterol 2014; 20:2071-2078. [PMID: 24587680 PMCID: PMC3934477 DOI: 10.3748/wjg.v20.i8.2071] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2013] [Accepted: 12/04/2013] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the mechanisms of chloride intracellular channel 1 (CLIC1) in the metastasis of colon cancer under hypoxia-reoxygenation (H-R) conditions.
METHODS: Fluorescent probes were used to detect reactive oxygen species (ROS) in LOVO cells. Wound healing assay and transwell assay were performed to examine the migration and invasion of LOVO cells. Expression of CLIC1 mRNA and protein, p-ERK, MMP-2 and MMP-9 proteins was analyzed by reverse transcription-polymerase chain reaction and Western blot.
METHODS: H-R treatment increased the intracellular ROS level in LOVO cells. The mRNA and protein expression of CLIC1 was elevated under H-R conditions. Functional inhibition of CLIC1 markedly decreased the H-R-enhanced ROS generation, cell migration, invasion and phosphorylation of ERK in treated LOVO cells. Additionally, the expression of MMP-2 and MMP-9 could be regulated by CLIC1-mediated ROS/ERK pathway.
CONCLUSION: Our results suggest that CLIC1 protein is involved in the metastasis of colon cancer LOVO cells via regulating the ROS/ERK pathway in the H-R process.
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18
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Shaverdashvili K, Wong P, Ma J, Zhang K, Osman I, Bedogni B. MT1-MMP modulates melanoma cell dissemination and metastasis through activation of MMP2 and RAC1. Pigment Cell Melanoma Res 2014; 27:287-96. [PMID: 24387669 DOI: 10.1111/pcmr.12201] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2013] [Accepted: 12/02/2013] [Indexed: 12/11/2022]
Abstract
Metastatic melanoma remains the deadliest of all skin cancers with a survival rate at five years of less than 15%. MT1-MMP is a membrane-associated matrix metalloproteinase that controls pericellular proteolysis and is an important, invasion-promoting, pro-tumorigenic MMP in cancer. We show that deregulation of MT1-MMP expression happens as early as the transition from nevus to primary melanoma and continues to increase during melanoma progression. Furthermore, MT1-MMP expression is associated with poor melanoma patient outcome, underscoring a pivotal role of MT1-MMP in melanoma pathogenesis. We demonstrate that MT1-MMP is directly required for melanoma cells to metastasize, as cells deprived of MT1-MMP fail to form distant metastasis in an orthotopic mouse melanoma model. We show that MT1-MMP affects cell invasion by activating its target MMP2. Importantly, we demonstrate, for the first time, that activation of MMP2 by MT1-MMP is required to sustain RAC1 activity and promote MT1-MMP-dependent cell motility. These data highlight a novel MT1-MMP/MMP2/RAC1 signaling axis in melanoma that may represent an intriguing molecular target for the treatment of invasive melanoma.
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Affiliation(s)
- Khvaramze Shaverdashvili
- Department of Biochemistry, Case Western Reserve University School of Medicine, Cleveland, OH, USA
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19
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Raza A, Ki CS, Lin CC. The influence of matrix properties on growth and morphogenesis of human pancreatic ductal epithelial cells in 3D. Biomaterials 2013; 34:5117-27. [PMID: 23602364 DOI: 10.1016/j.biomaterials.2013.03.086] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2013] [Accepted: 03/27/2013] [Indexed: 01/29/2023]
Abstract
A highly tunable synthetic biomimetic hydrogel platform was developed to study the growth and morphogenesis of pancreatic ductal epithelial cells (PDEC) under the influence of a myriad of instructive cues. A PDEC line, PANC-1, was used as a model system to illustrate the importance of matrix compositions on cell fate determination. PANC-1 is an immortalized ductal epithelial cell line widely used in the study of pancreatic tumor cell behaviors. PANC-1 cells are also increasingly explored as a potential cell source for endocrine differentiation. Thus far, most studies related to PANC-1, among other PDEC lines, are performed on 2D culture surfaces. Here, we evaluated the effect of matrix compositions on PANC-1 cell growth and morphogenesis in 3D. Specifically, PANC-1 cells were encapsulated in PEG-based hydrogels prepared by step-growth thiol-ene photopolymerization. It was found that thiol-ene hydrogels provided a cytocompatible environment for encapsulation and 3D culture of PANC-1 cells. In contrast to a monolayer morphology on 2D culture surfaces, PANC-1 cells formed clusters in 3D thiol-ene hydrogels within 4 days of culture. After culturing for 10 days, however, the growth and structures of these clusters were significantly impacted by gel matrix properties, including sensitivity of the matrix to proteases, stiffness of the matrix, and ECM-mimetic motifs. The use of matrix metalloproteinase (MMP) sensitive linker or the immobilization of fibronectin-derived RGDS ligand in the matrix promoted PANC-1 cell growth and encouraged them to adopt ductal cyst-like structures. On the other hand, the encapsulated cells formed smaller and more compact aggregates in non-MMP responsive gels. The incorporation of laminin-derived YIGSR peptide did not enhance cell growth and caused the cells to form compact aggregates. Immobilized YIGSR also enhanced the expression of epithelial cell markers including β-catenin and E-cadherin. These studies have established PEG-peptide hydrogels formed by thiol-ene photo-click reaction as a suitable platform for studying and manipulating pancreatic epithelial cell growth and morphogenesis in 3D.
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Affiliation(s)
- Asad Raza
- Department of Biomedical Engineering, Purdue School of Engineering and Technology, Indiana University-Purdue University at Indianapolis, Indianapolis, IN 46202, USA
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20
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Okajima M, Kokura S, Ishikawa T, Mizushima K, Tsuchiya R, Matsuyama T, Adachi S, Okayama T, Sakamoto N, Kamada K, Katada K, Uchiyama K, Handa O, Takagi T, Yagi N, Naito Y, Yoshikawa T. Anoxia/reoxygenation induces epithelial-mesenchymal transition in human colon cancer cell lines. Oncol Rep 2013; 29:2311-7. [PMID: 23589103 DOI: 10.3892/or.2013.2401] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2012] [Accepted: 11/07/2012] [Indexed: 12/13/2022] Open
Abstract
Epithelial-mesenchymal transition (EMT) is considered to be a crucial event in the development of cancer metastasis. Anoxia/reoxygenation (A/R) is known to occur in cancer tissues due to angiogenesis and changes in tissue pressure that occur during tumor growth. We investigated whether A/R induces EMT in the human colon cancer cell line HT-29. Colon cancer cells were exposed to anoxia (2 h) followed by reoxygenation (4-22 h) and evaluated for EMT changes using immunofluorescence and western blot analyses. We also investigated the expression of EMT-related transcription factors (Snail and ZEB1) using RT-PCR and evaluated the expression of NF-κB using ELISA. To determine whether NF-κB is involved in A/R-induced EMT, HT-29 cells were treated with proteasome inhibitors. Colon cancer cells exposed to A/R underwent EMT morphological changes; the cancer cells acquired a spindle-shaped phenotype. The expression of E-cadherin on the cell surface and the total amount of E-cadherin proteins were reduced after A/R. The expression of EMT-related transcription factors (Snail, ZEB1) was increased after A/R. Pretreatment with proteasome inhibitors significantly attenuated the downregulation of E-cadherin induced by A/R. These results indicate that A/R induces EMT in human colon cancer cells through an NF-κB-dependent transcriptional pathway.
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Affiliation(s)
- Manabu Okajima
- Department of Molecular Gastroenterology and Hepatology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
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Wu YJ, Tang Y, Li ZF, Li Z, Zhao Y, Wu ZJ, Su Q. Expression and significance of Rac1, Pak1 and Rock1 in gastric carcinoma. Asia Pac J Clin Oncol 2013; 10:e33-9. [PMID: 23298303 PMCID: PMC4153960 DOI: 10.1111/ajco.12052] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/18/2012] [Indexed: 12/15/2022]
Abstract
AIMS Rac1, Pak1 and Rock1 are indicators related to gastric cancer invasion and metastasis, but few reports discuss all three kinds of protein in research on gastric cancer invasion and metastasis. The aim of this study was to investigate the expression and clinical significance of Rac1, Pak1 and Rock1 in gastric carcinoma. METHODS Rac1, Pak1 and Rock1 expression in 158 cases of gastric carcinoma were investigated via immunohistochemical staining and clinical analysis. RESULTS The positive expression rates of Rac1, Pak1 and Rock1 in normal tissue, intraepithelial neoplastic tissues and gastric carcinoma showed an increasing trend (P < 0.05). Their expression in lymph node metastasis was significantly higher than in patients with lymph-node metastasis than in those without lymph nodes metastasis (P < 0.05). Their expression in tumor (TNM stages III and IV) were significantly higher than that in stages I and II (P < 0.05). Rac1, Pak1 and Rock1 expression did not differ significantly with patients' sex (P > 0.05). CONCLUSION Positive rates of Rac1, Pak1 and Rock1 expression in normal tissue, dysplasia and gastric carcinoma show an increasing trend and are correlated with tumor lymph node metastasis and TNM stage. Rac1, Pak1 and Rock1 may be important biomarkers of gastric carcinoma invasion and metastasis.
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Affiliation(s)
- Yong-jun Wu
- Xiangtan Affiliated Clinical Institute, University of South China, Xiangtan
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Xu YY, Bao YY, Zhou SH, Fan J. Effect on the expression of MMP-2, MT-MMP in laryngeal carcinoma Hep-2 cell line by antisense glucose transporter-1. Arch Med Res 2012; 43:395-401. [PMID: 22835601 DOI: 10.1016/j.arcmed.2012.07.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2012] [Accepted: 06/28/2012] [Indexed: 10/28/2022]
Abstract
BACKGROUND AND AIMS Glucose transporter protein-1 (Glut-1) is correlated with biological behaviors of malignant tumors. However, there was no evidence that overexpression of Glut-1 mechanistically lead to invasion or metastasis of cancer cells. We hypothesized that Glut-1 regulates the expression of membrane type 1-MMP (MT1-MMP) and matrix metalloproteinase-2 (MMP-2). METHODS Analysis of the expression of Glut-1, MMP-2, β-actin, and MT1-MMP was performed using RT-PCR. Expression of Glut-1 protein, MMP-2, and MT1-MMP was detected by Western blotting. RESULTS At mRNA and protein levels, Glut-1 and MMP-2 were co-expressed in the Hep-2 laryngeal carcinoma cell line. After transfection, Glut-1 antisense oligodeoxynucleotide (AS-ODN) decreased the expression of MMP-2 mRNA and protein as well as Glut-1 mRNA and protein. Glut-1 AS-ODN also decreased the expression of MT1-MMP mRNA. CONCLUSIONS Co-expression of Glut-1 and MMP-2 in Hep-2 laryngeal carcinoma cells and Glut-1 may regulate MMP-2 and MT1-MMP expression.
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Affiliation(s)
- Ying-Ying Xu
- Department of Otolaryngology, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
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23
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Caino MC, Lopez-Haber C, Kissil JL, Kazanietz MG. Non-small cell lung carcinoma cell motility, rac activation and metastatic dissemination are mediated by protein kinase C epsilon. PLoS One 2012; 7:e31714. [PMID: 22384062 PMCID: PMC3288050 DOI: 10.1371/journal.pone.0031714] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2011] [Accepted: 01/17/2012] [Indexed: 11/18/2022] Open
Abstract
Background Protein kinase C (PKC) ε, a key signaling transducer implicated in mitogenesis, survival, and cancer progression, is overexpressed in human primary non-small cell lung cancer (NSCLC). The role of PKCε in lung cancer metastasis has not yet been established. Principal Findings Here we show that RNAi-mediated knockdown of PKCε in H358, H1299, H322, and A549 NSCLC impairs activation of the small GTPase Rac1 in response to phorbol 12-myristate 13-acetate (PMA), serum, or epidermal growth factor (EGF). PKCε depletion markedly impaired the ability of NSCLC cells to form membrane ruffles and migrate. Similar results were observed by pharmacological inhibition of PKCε with εV1-2, a specific PKCε inhibitor. PKCε was also required for invasiveness of NSCLC cells and modulated the secretion of extracellular matrix proteases and protease inhibitors. Finally, we found that PKCε-depleted NSCLC cells fail to disseminate to lungs in a mouse model of metastasis. Conclusions Our results implicate PKCε as a key mediator of Rac signaling and motility of lung cancer cells, highlighting its potential as a therapeutic target.
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Affiliation(s)
- M Cecilia Caino
- Department of Pharmacology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
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Shen J, Bai XY, Qin Y, Jin WW, Zhou JY, Zhou JP, Yan YG, Wang Q, Bruce IC, Chen JH, Xia Q. Interrupted reperfusion reduces the activation of NADPH oxidase after cerebral I/R injury. Free Radic Biol Med 2011; 50:1780-6. [PMID: 21458562 DOI: 10.1016/j.freeradbiomed.2011.03.028] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/26/2010] [Revised: 03/23/2011] [Accepted: 03/24/2011] [Indexed: 12/14/2022]
Abstract
Interrupted reperfusion reduces ischemia/reperfusion (I/R) injury. This study was designed to determine whether NADPH oxidase participates in the neural protection against global I/R injury after interrupted reperfusion. Mice were randomly divided into five groups: sham (sham-operated), I/R (20-min global I/R), RR (I/R+interrupted reperfusion), Apo (I/R+apocynin administration), and RR+Apo. Behavioral tests (pole test, beam walking, and Morris water maze) and Nissl staining were undertaken in all five groups; superoxide levels, expression of gp91(phox) and p47(phox), p47(phox) translocation, and Rac1 activation were measured in the sham, I/R, and RR groups. The motor coordination, bradykinesia, and spatial learning and memory, as well as the neuron survival rates, were better in the RR, Apo, and RR+Apo groups than in the I/R group. The NADPH oxidase-dependent superoxide levels, p47(phox) and gp91(phox) expression, p47(phox) translocation, and Rac1 activation were lower in the RR group than in the I/R group. In conclusion, the neural protective effect of interrupted reperfusion is at least partly mediated by decreasing the expression and assembly of NADPH oxidase and the levels of NADPH oxidase-derived superoxide. The most striking reduction Rac1-GTP in the RR group suggests that interrupted reperfusion also acts on the activation of assembled NADPH oxidase by reducing the availability of Rac1-GTP.
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Affiliation(s)
- Jia Shen
- Department of Physiology, Zhejiang University School of Medicine, Hangzhou 310058, China
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Sun C, Rosendahl AH, Andersson R, Wu D, Wang X. The role of phosphatidylinositol 3-kinase signaling pathways in pancreatic cancer. Pancreatology 2011; 11:252-60. [PMID: 21625196 DOI: 10.1159/000327715] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BACKGROUND Pancreatic cancer is a highly malignant cancer and the fourth leading cause of cancer-related death. It is characterized by a rapid disease progression, a highly invasive tumor phenotype, and frequently resistance to chemotherapy. Despite significant advances in diagnosis, staging, and surgical management of the disease during the past decade, prognosis of pancreatic cancer is still dismal. METHODS AND RESULTS The phosphatidylinositol 3-kinase (PI3K) signaling pathways regulate cellular growth, metabolism, survival, and motility in pancreatic cancer. Pancreatic cancer is associated with a high degree of genetic alterations that can result in aberrant activation of the PI3K signaling pathway. Elucidating the role of the PI3K signaling pathway in pancreatic cancer may thus be both meaningful and necessary. CONCLUSION Improved knowledge of the PI3K signaling pathway in pancreatic cancer would furthermore be helpful in understanding mechanisms of tumor initiation and progression, and in identifying appropriate targeted anticancer treatment in pancreatic cancer. and IAP.
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Affiliation(s)
- Chen Sun
- Harbin Medical University, Harbin, China
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TGF-β1 increases invasiveness of SW1990 cells through Rac1/ROS/NF-κB/IL-6/MMP-2. Biochem Biophys Res Commun 2011; 405:140-5. [DOI: 10.1016/j.bbrc.2011.01.023] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2010] [Accepted: 01/05/2011] [Indexed: 12/20/2022]
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