201
|
Wang X, Sang X, Diorio C, Lin SX, Doillon CJ. In vitro interactions between mammary fibroblasts (Hs 578Bst) and cancer epithelial cells (MCF-7) modulate aromatase, steroid sulfatase and 17β-hydroxysteroid dehydrogenases. Mol Cell Endocrinol 2015; 412:339-48. [PMID: 26044867 DOI: 10.1016/j.mce.2015.05.032] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Revised: 05/16/2015] [Accepted: 05/26/2015] [Indexed: 12/21/2022]
Abstract
Our objectives were to investigate the interactions between mammary cancer epithelial cells (MCF-7) and stromal cells (Hs-578Bst) at the level of the expression and inhibition of steroidogenesis enzymes by using monolayer and three dimensional co-culture models. Expressions of steroidogenesis enzymes and E2/DHT conversions in co-cultured MCF-7 and Hs-578Bst cells as well as the effects of aromatase inhibitor combined to steroid sulfatase (STS) and 17β-hydroxysteroid dehydrogenases (17βHSDs) inhibitors were evaluated. 17β-HSD type 7 was mostly modulated in MCF-7 cells whereas aromatase was mostly regulated in Hs578Bst cells thereby increasing E2 conversion and MCF-7 cell growth. A combination of inhibitors toward aromatase, STS and 17β-HSD7, was found to be the most significant treatment in decreasing E2 and elevating DHT thus inhibiting MCF-7 cell proliferation and spheroid-like cancer cell aggregation in collagen gel. The interactions between those cells modulated E2 formation in paracrine/intracrine manners by synergistically regulating aromatase, 17β-HSD7 and STS. Among tumor-associated cells, stromal fibroblasts may participate in intratumoral E2 deposition; therefore promoting breast cancer cell growth.
Collapse
Affiliation(s)
- Xiaoqiang Wang
- Research Center of the CHU de Québec, CHUL, 2705, Boulevard Laurier, Quebec City, G1V 4G2, Canada; Department of Molecular Medicine, Faculty of Medicine, Laval University, 1050, Avenue de la Médecine, Quebec City, G1V OA6, Canada
| | - Xiaoye Sang
- Research Center of the CHU de Québec, CHUL, 2705, Boulevard Laurier, Quebec City, G1V 4G2, Canada; Department of Molecular Medicine, Faculty of Medicine, Laval University, 1050, Avenue de la Médecine, Quebec City, G1V OA6, Canada
| | - Caroline Diorio
- Centre des Maladie du Sein Deschênes-Fabia, Hôpital du Saint-Sacrement, 1050, Chemin Sainte-Foy, Quebec City, G1S 4L8, Canada; Department of Social and Preventive Medicine, Faculty of Medicine, Laval University, 1050, Avenue de la Médecine, Quebec City, G1V OA6, Canada
| | - Sheng-Xiang Lin
- Research Center of the CHU de Québec, CHUL, 2705, Boulevard Laurier, Quebec City, G1V 4G2, Canada; Department of Molecular Medicine, Faculty of Medicine, Laval University, 1050, Avenue de la Médecine, Quebec City, G1V OA6, Canada
| | - Charles J Doillon
- Research Center of the CHU de Québec, CHUL, 2705, Boulevard Laurier, Quebec City, G1V 4G2, Canada; Department of Surgery, Faculty of Medicine, Laval University, 1050, Avenue de la Médecine, Quebec City, G1V OA6, Canada.
| |
Collapse
|
202
|
Plaks V, Boldajipour B, Linnemann JR, Nguyen NH, Kersten K, Wolf Y, Casbon AJ, Kong N, van den Bijgaart RJE, Sheppard D, Melton AC, Krummel MF, Werb Z. Adaptive Immune Regulation of Mammary Postnatal Organogenesis. Dev Cell 2015; 34:493-504. [PMID: 26321127 DOI: 10.1016/j.devcel.2015.07.015] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2015] [Revised: 05/13/2015] [Accepted: 07/28/2015] [Indexed: 01/15/2023]
Abstract
Postnatal organogenesis occurs in an immune competent environment and is tightly controlled by interplay between positive and negative regulators. Innate immune cells have beneficial roles in postnatal tissue remodeling, but roles for the adaptive immune system are currently unexplored. Here we show that adaptive immune responses participate in the normal postnatal development of a non-lymphoid epithelial tissue. Since the mammary gland (MG) is the only organ developing predominantly after birth, we utilized it as a powerful system to study adaptive immune regulation of organogenesis. We found that antigen-mediated interactions between mammary antigen-presenting cells and interferon-γ (IFNγ)-producing CD4+ T helper 1 cells participate in MG postnatal organogenesis as negative regulators, locally orchestrating epithelial rearrangement. IFNγ then affects luminal lineage differentiation. This function of adaptive immune responses, regulating normal development, changes the paradigm for studying players of postnatal organogenesis and provides insights into immune surveillance and cancer transformation.
Collapse
Affiliation(s)
- Vicki Plaks
- Department of Anatomy, University of California, San Francisco, San Francisco, CA 94143, USA.
| | - Bijan Boldajipour
- Department of Pathology, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Jelena R Linnemann
- Department of Anatomy, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Nguyen H Nguyen
- Department of Anatomy, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Kelly Kersten
- Department of Anatomy, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Yochai Wolf
- Department of Immunology, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Amy-Jo Casbon
- Department of Anatomy, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Niwen Kong
- Department of Anatomy, University of California, San Francisco, San Francisco, CA 94143, USA
| | | | - Dean Sheppard
- Lung Biology Center, Department of Medicine, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Andrew C Melton
- Lung Biology Center, Department of Medicine, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Matthew F Krummel
- Department of Pathology, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Zena Werb
- Department of Anatomy, University of California, San Francisco, San Francisco, CA 94143, USA.
| |
Collapse
|
203
|
Sun W, Fang J, Yong Q, Li S, Xie Q, Yin J, Cui L. Subcutaneous Construction of Engineered Adipose Tissue with Fat Lobule-Like Structure Using Injectable Poly-Benzyl-L-Glutamate Microspheres Loaded with Adipose-Derived Stem Cells. PLoS One 2015; 10:e0135611. [PMID: 26274326 PMCID: PMC4537260 DOI: 10.1371/journal.pone.0135611] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2015] [Accepted: 07/24/2015] [Indexed: 11/18/2022] Open
Abstract
Porous microcarriers were fabricated from synthesized poly(γ-benzyl-L-glutamate) (PBLG) polymer to engineer adipose tissue with lobule-like structure via the injectable approach. The adipogenic differentiation of human adipose-derived stem cells (hASCs) seeded on porous PBLG microcarriers was determined by adipogenic gene expression and glycerol-3-phosphate dehydrogenase enzyme activity. In vitro adipogenic cultivation was performed for 7 days, and induced hASC/PBLG complex (Adi-ASC/PBLG group) was subcutaneously injected into nude mice. Injections of PBLG microcarriers alone (PBLG group) and non-induced hASC/PBLG complex (ASC/PBLG group) served as controls. Newly formed tissues were harvested after 4 and 8 weeks. Generation of subcutaneous adipose tissue with typical lobule-like structure separated by fibrous septa was observed upon injection of adipogenic-induced hASC/microsphere complex. Adipogenesis significantly increased in the Adi-ASC/PBLG group compared with the control groups. The angiogenesis in the engineered adipose tissue was comparable to that in normal tissue as determined by capillary density and luminal diameter. Cell tracking assay demonstrated that labeled hASCs remained detectable in the neo-generated tissues 8 weeks post-injection using green fluorescence protein-labeled hASCs. These results indicate that adipose tissue with typical lobule-like structure could be engineered using injectable porous PBLG microspheres loaded with adipogenic-induced hASCs.
Collapse
Affiliation(s)
- Wentao Sun
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Jianjun Fang
- Department of Polymer Materials, Shanghai University, Shanghai, People's Republic of China
| | - Qi Yong
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Sufang Li
- College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan, People's Republic of China
| | - Qingping Xie
- Department of Hand Surgery, Zhejiang Provincial People’s Hospital, Hangzhou, Zhejiang, People's Republic of China
| | - Jingbo Yin
- Department of Polymer Materials, Shanghai University, Shanghai, People's Republic of China
| | - Lei Cui
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| |
Collapse
|
204
|
Invasion process of induced deep nodular endometriosis in an experimental baboon model: similarities with collective cell migration? Fertil Steril 2015; 104:491-7.e2. [DOI: 10.1016/j.fertnstert.2015.05.011] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2015] [Revised: 05/06/2015] [Accepted: 05/11/2015] [Indexed: 11/21/2022]
|
205
|
Yu DD, Wu Y, Shen HY, Lv MM, Chen WX, Zhang XH, Zhong SL, Tang JH, Zhao JH. Exosomes in development, metastasis and drug resistance of breast cancer. Cancer Sci 2015; 106:959-64. [PMID: 26052865 PMCID: PMC4556383 DOI: 10.1111/cas.12715] [Citation(s) in RCA: 152] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Revised: 05/25/2015] [Accepted: 06/03/2015] [Indexed: 02/06/2023] Open
Abstract
Transport through the cell membrane can be divided into active, passive and vesicular types (exosomes). Exosomes are nano-sized vesicles released by a variety of cells. Emerging evidence shows that exosomes play a critical role in cancers. Exosomes mediate communication between stroma and cancer cells through the transfer of nucleic acid and proteins. It is demonstrated that the contents and the quantity of exosomes will change after occurrence of cancers. Over the last decade, growing attention has been paid to the role of exosomes in the development of breast cancer, the most life-threatening cancer in women. Breast cancer could induce salivary glands to secret specific exosomes, which could be used as biomarkers in the diagnosis of early breast cancer. Exosome-delivered nucleic acid and proteins partly facilitate the tumorigenesis, metastasis and resistance of breast cancer. Exosomes could also transmit anti-cancer drugs outside breast cancer cells, therefore leading to drug resistance. However, exosomes are effective tools for transportation of anti-cancer drugs with lower immunogenicity and toxicity. This is a promising way to establish a drug delivery system.
Collapse
Affiliation(s)
- Dan-dan Yu
- The First Clinical School of Nanjing Medical University, Nanjing, China.,Department of General Surgery, Nanjing Medical University Affiliated Cancer Hospital Cancer Institute of Jiangsu Province, Nanjing, China
| | - Ying Wu
- The First Clinical School of Nanjing Medical University, Nanjing, China.,Department of General Surgery, Nanjing Medical University Affiliated Cancer Hospital Cancer Institute of Jiangsu Province, Nanjing, China
| | - Hong-yu Shen
- Department of General Surgery, Nanjing Medical University Affiliated Cancer Hospital Cancer Institute of Jiangsu Province, Nanjing, China
| | - Meng-meng Lv
- The First Clinical School of Nanjing Medical University, Nanjing, China
| | - Wei-xian Chen
- The First Clinical School of Nanjing Medical University, Nanjing, China.,Department of General Surgery, Nanjing Medical University Affiliated Cancer Hospital Cancer Institute of Jiangsu Province, Nanjing, China
| | - Xiao-hui Zhang
- Center of Clinical Laboratory, Nanjing Medical University Affiliated Cancer Hospital Cancer Institute of Jiangsu Province, Nanjing, China
| | - Shan-liang Zhong
- Center of Clinical Laboratory, Nanjing Medical University Affiliated Cancer Hospital Cancer Institute of Jiangsu Province, Nanjing, China
| | - Jin-hai Tang
- Department of General Surgery, Nanjing Medical University Affiliated Cancer Hospital Cancer Institute of Jiangsu Province, Nanjing, China
| | - Jian-hua Zhao
- Center of Clinical Laboratory, Nanjing Medical University Affiliated Cancer Hospital Cancer Institute of Jiangsu Province, Nanjing, China
| |
Collapse
|
206
|
Yang YC, Chen PN, Wang SY, Liao CY, Lin YY, Sun SR, Chiu CL, Hsieh YS, Shieh JC, Chang JT. The differential roles of Slit2-exon 15 splicing variants in angiogenesis and HUVEC permeability. Angiogenesis 2015; 18:301-12. [PMID: 26021305 DOI: 10.1007/s10456-015-9467-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2014] [Accepted: 04/29/2015] [Indexed: 12/29/2022]
Abstract
Slit2, a secreted glycoprotein, is down-regulated in many cancers. Slit2/Robo signaling pathway plays an important, but controversial, role in angiogenesis. We identified splicing variants of Slit2 at exon 15, Slit2-WT and Slit2-ΔE15, with differential effects on proliferation and invasive capability of lung cancer cells. The aim of this study was to elucidate the differential roles of these exon 15 splicing variants in angiogenesis. Our results revealed that both Slit2-WT and Slit2-ΔE15 inhibit motility of human umbilical vein endothelial cells (HUVECs). The conditioned medium (CM) collected from CL1-5/VC or CL1-5/Slit2-WT lung adenocarcinoma cells blocked HUVEC tube formation and angiogenesis on chorioallantoic membrane (CAM) assay when compared with untreated HUVECs and CAM, respectively. However, CM of CL1-5/Slit2-ΔE15 restored the quality of tubes and the size of vessels. Although both Slit2-WT and Slit2-ΔE15 inhibited permeability induced by CM of cancer cells, Slit2-ΔE15 exhibited stronger effect. These results suggested that Slit2-ΔE15 plays important roles in normalization of blood vessels by enhancing tube quality and tightening endothelial cells, while Slit2-WT only enhances tightening of endothelial cells. It appears that Robo4 is responsible for Slit2 isoform-mediated inhibition of permeability, while neither Robo1 nor Robo4 is required for Slit2-ΔE15-enhanced tube quality. The results of this study suggest that Slit2-ΔE15 splicing form is a promising molecule for normalizing blood vessels around a tumor, which, in turn, may increase efficacy of chemotherapy and radiotherapy.
Collapse
Affiliation(s)
- Yun-Chiu Yang
- Department of Pulmonary Medicine, Tungs' Taichung MetroHarbor Hospital, Taichung, Taiwan, ROC
| | | | | | | | | | | | | | | | | | | |
Collapse
|
207
|
Yoshimura T, Liu M, Chen X, Li L, Wang JM. Crosstalk between Tumor Cells and Macrophages in Stroma Renders Tumor Cells as the Primary Source of MCP-1/CCL2 in Lewis Lung Carcinoma. Front Immunol 2015; 6:332. [PMID: 26167165 PMCID: PMC4481164 DOI: 10.3389/fimmu.2015.00332] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2015] [Accepted: 06/15/2015] [Indexed: 11/13/2022] Open
Abstract
The chemokine MCP-1/CCL2 is produced by a variety of tumors and plays an important role in cancer progression. We and others previously demonstrated that the primary source of MCP-1 in several mouse tumors, including 4T1 breast cancer, M5076 sarcoma, and B16 melanoma, was stromal cells. In the present study, we identified that tumor cells were the primary source of MCP-1 in Lewis lung carcinoma (LLC), because MCP-1 mRNA was highly expressed in tumors grown in both wild type (WT) and MCP-1(-/-) mice with elevated serum MCP-1 levels. Since LLC cells isolated from tumors expressed low levels of MCP-1 in vitro, it appeared that the tumor-stromal cell interaction in a tumor microenvironment increased MCP-1 expression in LLC cells. In fact, co-culture of LLC cells with normal mouse peritoneal macrophages or normal lung cells containing macrophages increased MCP-1 expression by LLC cells. Macrophages from TNFα(-/-) mice failed to activate LLC cells and anti-TNFα neutralizing antibody abolished the effect of WT macrophages on LLC cells. When LLC cells were transplanted into TNFα(-/-) mice, the levels of MCP-1 mRNA in tumors and serum MCP-1 levels were markedly lower as compared to WT mice, and importantly, tumors grew more slowly. Taken together, our results indicate that TNFα released by tumor cell-activated macrophages is critical for increased MCP-1 production by tumors cells. Thus, disruption of tumor-stromal cell interaction may inhibit tumor progression by reducing the production of tumor-promoting proinflammatory mediators, such as MCP-1.
Collapse
Affiliation(s)
- Teizo Yoshimura
- Laboratory of Molecular Immunoregulation, Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute, Frederick, MD, USA
| | - Mingyong Liu
- Laboratory of Molecular Immunoregulation, Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute, Frederick, MD, USA
- Department of Spine Surgery, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Xin Chen
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China
- Basic Science Program, Frederick National Laboratory for Cancer Research, Leidos Biomedical Research, Inc., Frederick, MD, USA
| | - Liangzhu Li
- Laboratory of Molecular Immunoregulation, Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute, Frederick, MD, USA
- Engineering Research Center for Cell and Therapeutic Antibody of Ministry of Education, School of Pharmacy, Shanghai Jiaotong University, Shanghai, China
| | - Ji Ming Wang
- Laboratory of Molecular Immunoregulation, Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute, Frederick, MD, USA
| |
Collapse
|
208
|
Nishikawa R, Chiyomaru T, Enokida H, Inoguchi S, Ishihara T, Matsushita R, Goto Y, Fukumoto I, Nakagawa M, Seki N. Tumour-suppressive microRNA-29s directly regulate LOXL2 expression and inhibit cancer cell migration and invasion in renal cell carcinoma. FEBS Lett 2015; 589:2136-45. [PMID: 26096783 DOI: 10.1016/j.febslet.2015.06.005] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2015] [Revised: 06/08/2015] [Accepted: 06/09/2015] [Indexed: 12/31/2022]
Abstract
Here, we found that members of the microRNA-29 family (miR-29a/b/c; "miR-29s") were significantly reduced in clear cell renal cell carcinoma (ccRCC) tissues, suggesting that they functioned as tumour suppressors. Restoration of all mature members of the miR-29 family inhibited cancer cell proliferation, migration and invasion. LOXL2 was a direct target gene of miR-29s, as shown by genome-wide gene expression analysis and luciferase reporter assay. Overexpressed LOXL2 was confirmed in ccRCC clinical specimens, and silencing of LOXL2 inhibited cancer cell migration and invasion in ccRCC cell lines. Our data demonstrated that the miR-29s-LOXL2 axis contributed to cancer cell migration and invasion in ccRCC.
Collapse
Affiliation(s)
- Rika Nishikawa
- Department of Functional Genomics, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan
| | - Takeshi Chiyomaru
- Department of Urology, Graduate School of Medical and Dental Sciences, Kagoshima University, 8-35-1 Sakuragaoka, Kagoshima 890-8520, Japan
| | - Hideki Enokida
- Department of Urology, Graduate School of Medical and Dental Sciences, Kagoshima University, 8-35-1 Sakuragaoka, Kagoshima 890-8520, Japan
| | - Satoru Inoguchi
- Department of Urology, Graduate School of Medical and Dental Sciences, Kagoshima University, 8-35-1 Sakuragaoka, Kagoshima 890-8520, Japan
| | - Tomoaki Ishihara
- Department of Urology, Graduate School of Medical and Dental Sciences, Kagoshima University, 8-35-1 Sakuragaoka, Kagoshima 890-8520, Japan
| | - Ryosuke Matsushita
- Department of Urology, Graduate School of Medical and Dental Sciences, Kagoshima University, 8-35-1 Sakuragaoka, Kagoshima 890-8520, Japan
| | - Yusuke Goto
- Department of Functional Genomics, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan
| | - Ichiro Fukumoto
- Department of Functional Genomics, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan
| | - Masayuki Nakagawa
- Department of Urology, Graduate School of Medical and Dental Sciences, Kagoshima University, 8-35-1 Sakuragaoka, Kagoshima 890-8520, Japan
| | - Naohiko Seki
- Department of Functional Genomics, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan.
| |
Collapse
|
209
|
Oh EY, Christensen SM, Ghanta S, Jeong JC, Bucur O, Glass B, Montaser-Kouhsari L, Knoblauch NW, Bertos N, Saleh SM, Haibe-Kains B, Park M, Beck AH. Extensive rewiring of epithelial-stromal co-expression networks in breast cancer. Genome Biol 2015; 16:128. [PMID: 26087699 PMCID: PMC4471934 DOI: 10.1186/s13059-015-0675-4] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2015] [Accepted: 05/13/2015] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Epithelial-stromal crosstalk plays a critical role in invasive breast cancer pathogenesis; however, little is known on a systems level about how epithelial-stromal interactions evolve during carcinogenesis. RESULTS We develop a framework for building genome-wide epithelial-stromal co-expression networks composed of pairwise co-expression relationships between mRNA levels of genes expressed in the epithelium and stroma across a population of patients. We apply this method to laser capture micro-dissection expression profiling datasets in the setting of breast carcinogenesis. Our analysis shows that epithelial-stromal co-expression networks undergo extensive rewiring during carcinogenesis, with the emergence of distinct network hubs in normal breast, and estrogen receptor-positive and estrogen receptor-negative invasive breast cancer, and the emergence of distinct patterns of functional network enrichment. In contrast to normal breast, the strongest epithelial-stromal co-expression relationships in invasive breast cancer mostly represent self-loops, in which the same gene is co-expressed in epithelial and stromal regions. We validate this observation using an independent laser capture micro-dissection dataset and confirm that self-loop interactions are significantly increased in cancer by performing computational image analysis of epithelial and stromal protein expression using images from the Human Protein Atlas. CONCLUSIONS Epithelial-stromal co-expression network analysis represents a new approach for systems-level analyses of spatially localized transcriptomic data. The analysis provides new biological insights into the rewiring of epithelial-stromal co-expression networks and the emergence of epithelial-stromal co-expression self-loops in breast cancer. The approach may facilitate the development of new diagnostics and therapeutics targeting epithelial-stromal interactions in cancer.
Collapse
Affiliation(s)
- Eun-Yeong Oh
- Cancer Research Institute, Beth Israel Deaconess Cancer Center, Boston, MA, 02215, USA. .,Department of Pathology, Beth Israel Deaconess Medical Center, Boston, MA, 02215, USA. .,Harvard Medical School, Boston, MA, 02215, USA.
| | - Stephen M Christensen
- Cancer Research Institute, Beth Israel Deaconess Cancer Center, Boston, MA, 02215, USA. .,Department of Pathology, Beth Israel Deaconess Medical Center, Boston, MA, 02215, USA. .,Harvard Medical School, Boston, MA, 02215, USA.
| | - Sindhu Ghanta
- Cancer Research Institute, Beth Israel Deaconess Cancer Center, Boston, MA, 02215, USA. .,Department of Pathology, Beth Israel Deaconess Medical Center, Boston, MA, 02215, USA. .,Harvard Medical School, Boston, MA, 02215, USA.
| | - Jong Cheol Jeong
- Cancer Research Institute, Beth Israel Deaconess Cancer Center, Boston, MA, 02215, USA. .,Department of Pathology, Beth Israel Deaconess Medical Center, Boston, MA, 02215, USA. .,Harvard Medical School, Boston, MA, 02215, USA.
| | - Octavian Bucur
- Cancer Research Institute, Beth Israel Deaconess Cancer Center, Boston, MA, 02215, USA. .,Department of Pathology, Beth Israel Deaconess Medical Center, Boston, MA, 02215, USA. .,Harvard Medical School, Boston, MA, 02215, USA.
| | - Benjamin Glass
- Cancer Research Institute, Beth Israel Deaconess Cancer Center, Boston, MA, 02215, USA. .,Department of Pathology, Beth Israel Deaconess Medical Center, Boston, MA, 02215, USA. .,Harvard Medical School, Boston, MA, 02215, USA.
| | - Laleh Montaser-Kouhsari
- Cancer Research Institute, Beth Israel Deaconess Cancer Center, Boston, MA, 02215, USA. .,Department of Pathology, Beth Israel Deaconess Medical Center, Boston, MA, 02215, USA. .,Harvard Medical School, Boston, MA, 02215, USA.
| | - Nicholas W Knoblauch
- Cancer Research Institute, Beth Israel Deaconess Cancer Center, Boston, MA, 02215, USA. .,Department of Pathology, Beth Israel Deaconess Medical Center, Boston, MA, 02215, USA. .,Harvard Medical School, Boston, MA, 02215, USA.
| | - Nicholas Bertos
- Goodman Cancer Research Centre, McGill University, Montreal, QC, Canada.
| | - Sadiq Mi Saleh
- Goodman Cancer Research Centre, McGill University, Montreal, QC, Canada.
| | - Benjamin Haibe-Kains
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, M5G 1L7, Canada. .,Department of Medical Biophysics, University of Toronto, Toronto, Ontario, M5G 1L7, Canada.
| | - Morag Park
- Goodman Cancer Research Centre, McGill University, Montreal, QC, Canada.
| | - Andrew H Beck
- Cancer Research Institute, Beth Israel Deaconess Cancer Center, Boston, MA, 02215, USA. .,Department of Pathology, Beth Israel Deaconess Medical Center, Boston, MA, 02215, USA. .,Harvard Medical School, Boston, MA, 02215, USA.
| |
Collapse
|
210
|
TAN TING, WANG LIE, WANG BING. Collagen and prostaglandin E2 regulate aromatase expression through the PI3K/AKT/IKK and the MAP kinase pathways in adipose stromal cells. Mol Med Rep 2015; 12:4766-4772. [DOI: 10.3892/mmr.2015.3901] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2013] [Accepted: 05/28/2014] [Indexed: 11/05/2022] Open
|
211
|
Abe H, Sakashita C, Kawada M, Nomoto A, Watanabe T, Shibasaki M. Synthesis and Structure-Activity Relationship Study of NBRI16716B, an Antitumor Natural Product. Chem Pharm Bull (Tokyo) 2015; 63:463-8. [PMID: 26027472 DOI: 10.1248/cpb.c15-00200] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The total synthesis of NBRI16716B (2), a naturally occurring modulator of tumor-stroma interactions, was successfully achieved. Using this synthetic route, a dehydroxy analogue (21) and a derivative lacking the 5-hydroxy-3-methylpentenoyl side chain (22) became accessible. A preliminary structure-activity relationship study to unveil the structural requirements for selective inhibition of tumor cells cocultured with stromal cells revealed that both of the hydroxamate structures of 2 are indispensable, whereas the 5-hydroxy-3-methylpentenoyl side chain is not essential.
Collapse
Affiliation(s)
- Hikaru Abe
- Institute of Microbial Chemistry (BIKAKEN), Tokyo
| | | | | | | | | | | |
Collapse
|
212
|
The role of adipose-derived stem cells in breast cancer progression and metastasis. Stem Cells Int 2015; 2015:120949. [PMID: 26000019 PMCID: PMC4427098 DOI: 10.1155/2015/120949] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Accepted: 12/26/2014] [Indexed: 12/15/2022] Open
Abstract
Conventional breast cancer extirpation involves resection of parts of or the whole gland, resulting in asymmetry and disfiguration. Given the unsatisfactory aesthetic outcomes, patients often desire postmastectomy reconstructive procedures. Autologous fat grafting has been proposed for reconstructive purposes for decades to restore form and anatomy after mastectomy. Fat has the inherent advantage of being autologous tissue and the most natural-appearing filler, but given its inconsistent engraftment and retention rates, it lacks reliability. Implementation of autologous fat grafts with cellular adjuncts, such as multipotent adipose-derived stem cells (ADSCs), has shown promising results. However, it is pertinent and critical to question whether these cells could promote any residual tumor cells to proliferate, differentiate, or metastasize or even induce de novo carcinogenesis. Thus far, preclinical and clinical study findings are discordant. A trend towards potential promotion of both breast cancer growth and invasion by ADSCs found in basic science studies was indeed not confirmed in clinical trials. Whether experimental findings eventually correlate with or will be predictive of clinical outcomes remains unclear. Herein, we aimed to concisely review current experimental findings on the interaction of mesenchymal stem cells and breast cancer, mainly focusing on ADSCs as a promising tool for regenerative medicine, and discuss the implications in clinical translation.
Collapse
|
213
|
Lee S, Hennigar SR, Alam S, Nishida K, Kelleher SL. Essential Role for Zinc Transporter 2 (ZnT2)-mediated Zinc Transport in Mammary Gland Development and Function during Lactation. J Biol Chem 2015; 290:13064-78. [PMID: 25851903 DOI: 10.1074/jbc.m115.637439] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2015] [Indexed: 01/28/2023] Open
Abstract
The zinc transporter ZnT2 (SLC30A2) imports zinc into vesicles in secreting mammary epithelial cells (MECs) and is critical for zinc efflux into milk during lactation. Recent studies show that ZnT2 also imports zinc into mitochondria and is expressed in the non-lactating mammary gland and non-secreting MECs, highlighting the importance of ZnT2 in general mammary gland biology. In this study we used nulliparous and lactating ZnT2-null mice and characterized the consequences on mammary gland development, function during lactation, and milk composition. We found that ZnT2 was primarily expressed in MECs and to a limited extent in macrophages in the nulliparous mammary gland and loss of ZnT2 impaired mammary expansion during development. Secondly, we found that lactating ZnT2-null mice had substantial defects in mammary gland architecture and MEC function during secretion, including fewer, condensed and disorganized alveoli, impaired Stat5 activation, and unpolarized MECs. Loss of ZnT2 led to reduced milk volume and milk containing less protein, fat, and lactose compared with wild-type littermates, implicating ZnT2 in the regulation of mammary differentiation and optimal milk production during lactation. Together, these results demonstrate that ZnT2-mediated zinc transport is critical for mammary gland function, suggesting that defects in ZnT2 not only reduce milk zinc concentration but may compromise breast health and increase the risk for lactation insufficiency in lactating women.
Collapse
Affiliation(s)
- Sooyeon Lee
- From the Interdisciplinary Graduate Physiology Program and Department of Nutritional Sciences, The Pennsylvania State University, University Park, Pennsylvania 16802, Departments of Cellular and Molecular Physiology
| | - Stephen R Hennigar
- Department of Nutritional Sciences, The Pennsylvania State University, University Park, Pennsylvania 16802
| | - Samina Alam
- Departments of Cellular and Molecular Physiology, Surgery, Penn State Hershey College of Medicine, Hershey, Pennsylvania 17033
| | - Keigo Nishida
- Laboratory for Homeostatic Network, RCAI, RIKEN Center for Integrative Medical Sciences (IMS-RCAI), Yokohama 230-0045, Japan, and Laboratory of Immune Regulation, Faculty of Pharmaceutical Sciences, Suzuka University of Medical Science, Suzuka 513-8670, Japan
| | - Shannon L Kelleher
- From the Interdisciplinary Graduate Physiology Program and Department of Nutritional Sciences, The Pennsylvania State University, University Park, Pennsylvania 16802, Departments of Cellular and Molecular Physiology, Surgery, Penn State Hershey College of Medicine, Hershey, Pennsylvania 17033, Pharmacology, and
| |
Collapse
|
214
|
Stromal cells positively and negatively modulate the growth of cancer cells: stimulation via the PGE2-TNFα-IL-6 pathway and inhibition via secreted GAPDH-E-cadherin interaction. PLoS One 2015; 10:e0119415. [PMID: 25785838 PMCID: PMC4364666 DOI: 10.1371/journal.pone.0119415] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2014] [Accepted: 01/13/2015] [Indexed: 02/04/2023] Open
Abstract
Fibroblast-like stromal cells modulate cancer cells through secreted factors and adhesion, but those factors are not fully understood. Here, we have identified critical stromal factors that modulate cancer growth positively and negatively. Using a cell co-culture system, we found that gastric stromal cells secreted IL-6 as a growth and survival factor for gastric cancer cells. Moreover, gastric cancer cells secreted PGE2 and TNFα that stimulated IL-6 secretion by the stromal cells. Furthermore, we found that stromal cells secreted glyceraldehyde 3-phosphate dehydrogenase (GAPDH). Extracellular GAPDH, or its N-terminal domain, inhibited gastric cancer cell growth, a finding confirmed in other cell systems. GAPDH bound to E-cadherin and downregulated the mTOR-p70S6 kinase pathway. These results demonstrate that stromal cells could regulate cancer cell growth through the balance of these secreted factors. We propose that negative regulation of cancer growth using GAPDH could be a new anti-cancer strategy.
Collapse
|
215
|
Inman JL, Robertson C, Mott JD, Bissell MJ. Mammary gland development: cell fate specification, stem cells and the microenvironment. Development 2015; 142:1028-42. [DOI: 10.1242/dev.087643] [Citation(s) in RCA: 279] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The development of the mammary gland is unique: the final stages of development occur postnatally at puberty under the influence of hormonal cues. Furthermore, during the life of the female, the mammary gland can undergo many rounds of expansion and proliferation. The mammary gland thus provides an excellent model for studying the ‘stem/progenitor’ cells that allow this repeated expansion and renewal. In this Review, we provide an overview of the different cell types that constitute the mammary gland, and discuss how these cell types arise and differentiate. As cellular differentiation cannot occur without proper signals, we also describe how the tissue microenvironment influences mammary gland development.
Collapse
Affiliation(s)
- Jamie L. Inman
- Life Sciences Division, Lawrence Berkeley National Laboratory, University of California, Berkeley, CA 94720, USA
| | - Claire Robertson
- Life Sciences Division, Lawrence Berkeley National Laboratory, University of California, Berkeley, CA 94720, USA
| | - Joni D. Mott
- Life Sciences Division, Lawrence Berkeley National Laboratory, University of California, Berkeley, CA 94720, USA
| | - Mina J. Bissell
- Life Sciences Division, Lawrence Berkeley National Laboratory, University of California, Berkeley, CA 94720, USA
| |
Collapse
|
216
|
Wang C, Gao C, Meng K, Qiao H, Wang Y. Human adipocytes stimulate invasion of breast cancer MCF-7 cells by secreting IGFBP-2. PLoS One 2015; 10:e0119348. [PMID: 25747684 PMCID: PMC4352027 DOI: 10.1371/journal.pone.0119348] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2014] [Accepted: 01/12/2015] [Indexed: 11/23/2022] Open
Abstract
Background and Aims A better understanding of the effects of human adipocytes on breast cancer cells may lead to the development of new treatment strategies. We explored the effects of adipocytes on the migration and invasion of breast cancer cells both in vitro and in vivo. Methods To study the reciprocal effects of adipocytes and cancer cells, we co-cultured human mature adipocytes and breast cancer cells in a system devoid of heterogeneous cell-cell contact. To analyze the factors that were secreted from adipocytes and that affected the invasive abilities of breast cancer cells, we detected different cytokines in various co-culture media. To study the communication of mature adipocytes and breast cancer cells in vivo, we chose 10 metastatic pathologic samples and 10 non-metastatic pathologic samples to do immunostaining. Results The co-culture media of human MCF-7 breast cancer cells and human mature adipocytes increased motility of MCF-7 cells. In addition, MMP-2 was remarkably up-regulated, whereas E-cadherin was down-regulated in these MCF-7 cells. Based on our co-culture medium chip results, we chose four candidate cytokines and tested their influence on metastasis individually. We found that IGFBP-2 enhanced the invasion ability of MCF-7 cells in vitro more prominently than did the other factors. In vivo, metastatic human breast tumors had higher levels of MMP-2 than did non-metastatic tumor tissue, whereas adipocytes around metastatic breast tumors had higher levels of IGFBP-2 than did adipocytes surrounding non-metastatic breast tumors. Conclusions IGFBP-2 secreted by mature adipocytes plays a key role in promoting the metastatic ability of MCF-7 breast cancer cells.
Collapse
Affiliation(s)
- Chen Wang
- State Key Laboratory of Chemistry for Life Science & Jiangsu Key Laboratory of Molecular Medicine, Medical School of Nanjing University, Nanjing 210093, China
| | - Chao Gao
- The Center for Clinical Reproductive Medicine, Jiangsu Province Hospital, Nanjing 210029, China
| | - Kui Meng
- The Gulou Hospital attached to Nanjing University, Nanjing 210008, China
| | - Haishi Qiao
- State Key Laboratory of Chemistry for Life Science & Jiangsu Key Laboratory of Molecular Medicine, Medical School of Nanjing University, Nanjing 210093, China
| | - Yong Wang
- State Key Laboratory of Chemistry for Life Science & Jiangsu Key Laboratory of Molecular Medicine, Medical School of Nanjing University, Nanjing 210093, China
- * E-mail:
| |
Collapse
|
217
|
Nienhuis H, Gaykema S, Timmer-Bosscha H, Jalving M, Brouwers A, Lub-de Hooge M, van der Vegt B, Overmoyer B, de Vries E, Schröder C. Targeting breast cancer through its microenvironment: Current status of preclinical and clinical research in finding relevant targets. Pharmacol Ther 2015; 147:63-79. [DOI: 10.1016/j.pharmthera.2014.11.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2014] [Accepted: 10/27/2014] [Indexed: 12/31/2022]
|
218
|
Epithelial Xbp1 is required for cellular proliferation and differentiation during mammary gland development. Mol Cell Biol 2015; 35:1543-56. [PMID: 25713103 DOI: 10.1128/mcb.00136-15] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Accepted: 02/11/2015] [Indexed: 12/12/2022] Open
Abstract
Xbp1, a key mediator of the unfolded protein response (UPR), is activated by IRE1α-mediated splicing, which results in a frameshift to encode a protein with transcriptional activity. However, the direct function of Xbp1 in epithelial cells during mammary gland development is unknown. Here we report that the loss of Xbp1 in the mammary epithelium through targeted deletion leads to poor branching morphogenesis, impaired terminal end bud formation, and spontaneous stromal fibrosis during the adult virgin period. Additionally, epithelial Xbp1 deletion induces endoplasmic reticulum (ER) stress in the epithelium and dramatically inhibits epithelial proliferation and differentiation during lactation. The synthesis of milk and its major components, α/β-casein and whey acidic protein (WAP), is significantly reduced due to decreased prolactin receptor (Prlr) and ErbB4 expression in Xbp1-deficient mammary epithelium. Reduction of Prlr and ErbB4 expression and their diminished availability at the cell surface lead to reduced phosphorylated Stat5, an essential regulator of cell proliferation and differentiation during lactation. As a result, lactating mammary glands in these mice produce less milk protein, leading to poor pup growth and postnatal death. These findings suggest that the loss of Xbp1 induces a terminal UPR which blocks proliferation and differentiation during mammary gland development.
Collapse
|
219
|
Guan H, Tan J, Zhang F, Gao L, Bai L, Qi D, Dong H, Zhu L, Li X, Liu T. Myofibroblasts from salivary gland adenoid cystic carcinomas promote cancer invasion by expressing MMP2 and CXCL12. Histopathology 2015; 66:781-90. [PMID: 25098606 DOI: 10.1111/his.12519] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2014] [Accepted: 07/28/2014] [Indexed: 12/28/2022]
Affiliation(s)
- Haijie Guan
- Section of Oral Pathology; College of Stomatology; Dalian Medical University; Dalian China
| | - Jie Tan
- Section of Oral Pathology; College of Stomatology; Dalian Medical University; Dalian China
| | - Fuyin Zhang
- Department of Oral Surgery; The Second Affiliated Hospital; Dalian Medical University; Dalian China
| | - Lu Gao
- Section of Oral Pathology; College of Stomatology; Dalian Medical University; Dalian China
| | - Liang Bai
- Department of Oral Surgery; The First Affiliated Hospital; Dalian Medical University; Dalian China
| | - Dongyuan Qi
- Department of Oral Surgery; The First Affiliated Hospital; Dalian Medical University; Dalian China
| | - Hui Dong
- Department of Oral Surgery; The First Affiliated Hospital; Dalian Medical University; Dalian China
| | - Lei Zhu
- Section of Oral Pathology; College of Stomatology; Dalian Medical University; Dalian China
| | - Xiaojie Li
- Section of Oral Pathology; College of Stomatology; Dalian Medical University; Dalian China
| | - Tingjiao Liu
- Section of Oral Pathology; College of Stomatology; Dalian Medical University; Dalian China
| |
Collapse
|
220
|
Yotsumoto F, You WK, Cejudo-Martin P, Kucharova K, Sakimura K, Stallcup WB. NG2 proteoglycan-dependent recruitment of tumor macrophages promotes pericyte-endothelial cell interactions required for brain tumor vascularization. Oncoimmunology 2015; 4:e1001204. [PMID: 26137396 PMCID: PMC4485789 DOI: 10.1080/2162402x.2014.1001204] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2014] [Revised: 12/15/2014] [Accepted: 12/17/2014] [Indexed: 11/03/2022] Open
Abstract
Early stage growth of intracranial B16F10 tumors is reduced by 87% in myeloid-specific NG2 null (Mac-NG2ko) mice and by 77% in pericyte-specific NG2 null (PC-NG2ko) mice, demonstrating the importance of the NG2 proteoglycan in each of these stromal compartments. In both genotypes, loss of pericyte-endothelial cell interaction results in numerous structural defects in tumor blood vessels, including decreased formation of endothelial cell junctions and decreased assembly of the vascular basal lamina. All vascular deficits are larger in Mac-NG2ko mice than in PC-NG2ko mice, correlating with the greater decrease in pericyte-endothelial cell interaction in Mac-NG2ko animals. Accordingly, tumor vessels in Mac-NG2ko mice have a smaller diameter, lower degree of patency, and higher degree of leakiness than tumor vessels in PC-NG2ko mice, leading to less efficient tumor blood flow and to increased intratumoral hypoxia. While reduced pericyte interaction with endothelial cells in PC-NG2ko mice is caused by loss of NG2-dependent pericyte activation of β1 integrin signaling in endothelial cells, reduced pericyte-endothelial cell interaction in Mac-NG2ko mice is due to a 90% reduction in NG2-dependent macrophage recruitment to tumors. The absence of a macrophage-derived signal(s) in Mac-NG2ko mice results in the loss of pericyte ability to associate with endothelial cells, possibly due to reduced expression of N-cadherin by both pericytes and endothelial cells.
Collapse
Affiliation(s)
- Fusanori Yotsumoto
- Sanford-Burnham Medical Research Institute; Cancer Center ; La Jolla, CA USA ; Department of Biochemistry; Faculty of Medicine ; Fukuoka University , Fukuoka, Japan
| | - Weon-Kyoo You
- Sanford-Burnham Medical Research Institute; Cancer Center ; La Jolla, CA USA ; Biologics Business; Research and Development Center ; Hanwha Chemical ; Daejeon, South Korea
| | - Pilar Cejudo-Martin
- Sanford-Burnham Medical Research Institute; Cancer Center ; La Jolla, CA USA
| | - Karolina Kucharova
- Sanford-Burnham Medical Research Institute; Cancer Center ; La Jolla, CA USA
| | - Kenji Sakimura
- Department of Cellular Neurobiology; Brain Research Institute ; Niigata University , Niigata, Japan
| | - William B Stallcup
- Sanford-Burnham Medical Research Institute; Cancer Center ; La Jolla, CA USA
| |
Collapse
|
221
|
Gouda ZA, Ahmed SM, Elghonaimy NM. Characterization of adult male albino rat mammary gland: a histological and serological study. ACTA ACUST UNITED AC 2015. [DOI: 10.7243/2055-091x-2-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
222
|
SUN GUOGUI, LIU QING, CHENG YUNJIE, HU WANNING. B cell translocation gene 1 reduces the biological outcome of kidney cancer through induction of cell proliferation, cell cycle arrest, cell apoptosis and cell metastasis. Int J Mol Med 2014; 35:777-83. [DOI: 10.3892/ijmm.2014.2058] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Accepted: 09/25/2014] [Indexed: 11/05/2022] Open
|
223
|
Kanapathipillai M, Brock A, Ingber DE. Nanoparticle targeting of anti-cancer drugs that alter intracellular signaling or influence the tumor microenvironment. Adv Drug Deliv Rev 2014; 79-80:107-18. [PMID: 24819216 DOI: 10.1016/j.addr.2014.05.005] [Citation(s) in RCA: 153] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2013] [Revised: 04/22/2014] [Accepted: 05/01/2014] [Indexed: 12/13/2022]
Abstract
Nanoparticle-based therapeutics are poised to become a leading delivery strategy for cancer treatment because they potentially offer higher selectivity, reduced toxicity, longer clearance times, and increased efficacy compared to conventional systemic therapeutic approaches. This article reviews existing nanoparticle technologies and methods that are used to target drugs to treat cancer by altering signal transduction or modulating the tumor microenvironment. We also consider the implications of recent advances in the nanotherapeutics field for the future of cancer therapy.
Collapse
|
224
|
3D tissue-engineered model of Ewing's sarcoma. Adv Drug Deliv Rev 2014; 79-80:155-71. [PMID: 25109853 DOI: 10.1016/j.addr.2014.07.012] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2014] [Revised: 06/28/2014] [Accepted: 07/24/2014] [Indexed: 12/30/2022]
Abstract
Despite longstanding reliance upon monolayer culture for studying cancer cells, and numerous advantages from both a practical and experimental standpoint, a growing body of evidence suggests that more complex three-dimensional (3D) models are necessary to properly mimic many of the critical hallmarks associated with the oncogenesis, maintenance and spread of Ewing's sarcoma (ES), the second most common pediatric bone tumor. And as clinicians increasingly turn to biologically-targeted therapies that exert their effects not only on the tumor cells themselves, but also on the surrounding extracellular matrix, it is especially important that preclinical models evolve in parallel to reliably measure antineoplastic effects and possible mechanisms of de novo and acquired drug resistance. Herein, we highlight a number of innovative methods used to fabricate biomimetic ES tumors, encompassing both the surrounding cellular milieu and the extracellular matrix (ECM), and suggest potential applications to advance our understanding of ES biology, preclinical drug testing, and personalized medicine.
Collapse
|
225
|
Lee E, Jeong KW, Shin A, Kim Y. Anti-inflammatory Activity of 3,6,3'-Trihydroxyflavone in Mouse Macrophages, In vitro. B KOREAN CHEM SOC 2014. [DOI: 10.5012/bkcs.2014.35.11.3169] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
226
|
Abstract
Cancer-associated fibroblasts (CAF) are key contributors to malignant progression, but their critical regulators remain largely unknown. In this study, we examined the role of Twist1, a central regulator of epithelial-mesenchymal transition in carcinoma cells, in the transdifferentiation of normal quiescent fibroblasts to CAF and we defined its upstream controls and downstream effectors. Primary human gastric fibroblast and CAF cultures were established from gastrectomy specimens and validated as nontumor cells by somatic mutation analyses. In these cultures, exposure to the proinflammatory cytokine IL6 commonly expressed in tumors was sufficient to induce Twist1 expression in normal fibroblasts and transdifferentiate them into CAFs via STAT3 phosphorylation. In xenograft models, tumor infiltration of Twist1-expressing CAFs was enhanced strongly by ectopic IL6 expression in gastric or breast cancer cells. We found that Twist1 expression was necessary and sufficient for CAF transdifferentiation. Enforced expression of Twist1 in normal fibroblasts was also sufficient to drive CAF marker expression and malignant character in gastric cancer cells both in vitro and in vivo. Conversely, silencing the expression of Twist1 in CAFs abrogated their tumor-promoting properties. Downstream of Twist1, we defined the chemokine CXCL12 as a transcriptional target. Clinically, CXCL12 and Twist1 expression were correlated in CAFs present in gastric tumor specimens. Finally, ectopic expression of Twist1 in normal fibroblasts suppressed premature senescence, whereas Twist1 attenuation accelerated senescence in CAFs. Our findings define Twist1 as a compelling target to deprogram the tumor-supporting features of the cancer microenvironment.
Collapse
Affiliation(s)
- Keun-Woo Lee
- Department of Pathology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea. Department of Health Science and Technology, Samsung Advanced Institute for Health Science and Technology, Sungkyunkwan University, Seoul, Republic of Korea
| | - So-Young Yeo
- Department of Pathology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea. Department of Health Science and Technology, Samsung Advanced Institute for Health Science and Technology, Sungkyunkwan University, Seoul, Republic of Korea
| | - Chang Ohk Sung
- Department of Pathology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Seok-Hyung Kim
- Department of Pathology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea. Department of Health Science and Technology, Samsung Advanced Institute for Health Science and Technology, Sungkyunkwan University, Seoul, Republic of Korea.
| |
Collapse
|
227
|
Patel R, Filer A, Barone F, Buckley CD. Stroma: fertile soil for inflammation. Best Pract Res Clin Rheumatol 2014; 28:565-76. [PMID: 25481550 DOI: 10.1016/j.berh.2014.10.022] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Biological therapies for the management of immune mediated inflammatory diseases such as rheumatoid arthritis have proven to be extremely successful in recent years. Despite these successes, even the most effective of therapies do not lead to cure. Why chronic inflammation persists indefinitely within the rheumatoid synovium despite an absence of continuous stimulation, and why some patients with early synovitis progress to persistent disease whilst others do not, has remained unexplained. In contrast to the paradigm that stromal cells are biochemically active but immunologically passive, there is now growing evidence that stromal components from the rheumatoid synovium play a crucial part in the immunopathology of rheumatoid arthritis. Stromal cells play a central role in the transformation of an acute, resolving to a chronic inflammatory process, and to the persistence of synovial inflammation and joint destruction through a variety of immune mechanisms. Therapeutic manipulation of the stroma is a largely unexplored, yet potentially vital area of research. Targeting pathogenic stromal cells has the potential to provide a cure for chronic inflammatory disorders such as rheumatoid arthritis.
Collapse
Affiliation(s)
- Rikesh Patel
- Rheumatology Research Group, Center for Translational Inflammation Research, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - Andrew Filer
- Rheumatology Research Group, Center for Translational Inflammation Research, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - Francesca Barone
- Rheumatology Research Group, Center for Translational Inflammation Research, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - Christopher D Buckley
- Rheumatology Research Group, Center for Translational Inflammation Research, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK.
| |
Collapse
|
228
|
Zou A, Lambert D, Yeh H, Yasukawa K, Behbod F, Fan F, Cheng N. Elevated CXCL1 expression in breast cancer stroma predicts poor prognosis and is inversely associated with expression of TGF-β signaling proteins. BMC Cancer 2014; 14:781. [PMID: 25344051 PMCID: PMC4221705 DOI: 10.1186/1471-2407-14-781] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2014] [Accepted: 10/14/2014] [Indexed: 12/30/2022] Open
Abstract
Background CXCL1 is a chemotactic cytokine shown to regulate breast cancer progression and chemo-resistance. However, the prognostic significance of CXCL1 expression in breast cancer has not been fully characterized. Fibroblasts are important cellular components of the breast tumor microenvironment, and recent studies indicate that this cell type is a potential source of CXCL1 expression in breast tumors. The goal of this study was to further characterize the expression patterns of CXCL1 in breast cancer stroma, determine the prognostic significance of stromal CXCL1 expression, and identify factors affecting stromal CXCL1 expression. Methods Stromal CXCL1 protein expression was analyzed in 54 normal and 83 breast carcinomas by immunohistochemistry staining. RNA expression of CXCL1 in breast cancer stroma was analyzed through data mining in http://www.Oncomine.org. The relationships between CXCL1 expression and prognostic factors were analyzed by univariate analysis. Co-immunofluorescence staining for CXCL1, α-Smooth Muscle Actin (α-SMA) and Fibroblast Specific Protein 1 (FSP1) expression was performed to analyze expression of CXCL1 in fibroblasts. By candidate profiling, the TGF-β signaling pathway was identified as a regulator of CXCL1 expression in fibroblasts. Expression of TGF-β and SMAD gene products were analyzed by immunohistochemistry and data mining analysis. The relationships between stromal CXCL1 and TGF-β signaling components were analyzed by univariate analysis. Carcinoma associated fibroblasts isolated from MMTV-PyVmT mammary tumors were treated with recombinant TGF-β and analyzed for CXCL1 promoter activity by luciferase assay, and protein secretion by ELISA. Results Elevated CXCL1 expression in breast cancer stroma correlated with tumor grade, disease recurrence and decreased patient survival. By co-immunofluorescence staining, CXCL1 expression overlapped with expression of α-SMA and FSP1 proteins. Expression of stromal CXCL1 protein expression inversely correlated with expression of TGF-β signaling components. Treatment of fibroblasts with TGF-β suppressed CXCL1 secretion and promoter activity. Conclusions Increased CXCL1 expression in breast cancer stroma correlates with poor patient prognosis. Furthermore, CXCL1 expression is localized to α-SMA and FSP1 positive fibroblasts, and is negatively regulated by TGF-β signaling. These studies indicate that decreased TGF-β signaling in carcinoma associated fibroblasts enhances CXCL1 expression in fibroblasts, which could contribute to breast cancer progression. Electronic supplementary material The online version of this article (doi:10.1186/1471-2407-14-781) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
| | | | | | | | | | | | - Nikki Cheng
- Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA.
| |
Collapse
|
229
|
Kotsuma M, Parashurama N, Smith BR, Wo J, Ito K, Gambhir SS. Nondestructive, serial in vivo imaging of a tissue-flap using a tissue adhesion barrier. INTRAVITAL 2014. [DOI: 10.4161/intv.21769] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
|
230
|
Mammary fat of breast cancer: gene expression profiling and functional characterization. PLoS One 2014; 9:e109742. [PMID: 25291184 PMCID: PMC4188628 DOI: 10.1371/journal.pone.0109742] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2014] [Accepted: 09/08/2014] [Indexed: 12/22/2022] Open
Abstract
Mammary fat is the main composition of breast, and is the most probable candidate to affect tumor behavior because the fat produces hormones, growth factors and adipokines, a heterogeneous group of signaling molecules. Gene expression profiling and functional characterization of mammary fat in Chinese women has not been reported. Thus, we collected the mammary fat tissues adjacent to breast tumors from 60 subjects, among which 30 subjects had breast cancer and 30 had benign lesions. We isolated and cultured the stromal vascular cell fraction from mammary fat. The expression of genes related to adipose function (including adipogenesis and secretion) was detected at both the tissue and the cellular level. We also studied mammary fat browning. The results indicated that fat tissue close to malignant and benign lesions exhibited distinctive gene expression profiles and functional characteristics. Although the mammary fat of breast tumors atrophied, it secreted tumor growth stimulatory factors. Browning of mammary fat was observed and browning activity of fat close to malignant breast tumors was greater than that close to benign lesions. Understanding the diversity between these two fat depots may possibly help us improve our understanding of breast cancer pathogenesis and find the key to unlock new anticancer therapies.
Collapse
|
231
|
Sun X, Sandhu R, Figueroa JD, Gierach GL, Sherman ME, Troester MA. Benign breast tissue composition in breast cancer patients: association with risk factors, clinical variables, and gene expression. Cancer Epidemiol Biomarkers Prev 2014; 23:2810-8. [PMID: 25249325 DOI: 10.1158/1055-9965.epi-14-0507] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
BACKGROUND Breast tissue composition (epithelium, non-fatty stroma, and adipose) changes qualitatively and quantitatively throughout the lifespan, and may mediate relationships between risk factors and breast cancer initiation. We sought to identify relationships between tissue composition, risk factors, tumor characteristics, and gene expression. METHODS Participants were 146 patients from the Polish Breast Cancer Study, with data on risk factor and clinicopathological characteristics. Benign breast tissue composition was evaluated using digital image analysis of histologic sections. Whole-genome microarrays were performed on the same tissue blocks. RESULTS Mean epithelial, non-fatty stromal, and adipose proportions were 8.4% (SD = 4.9%), 27.7% (SD = 24.0%), and 64.0% (SD = 24.0%), respectively. Among women <50 years old, stroma proportion decreased and adipose proportion increased with age, with approximately 2% difference per year (P < 0.01). The variation in epithelial proportion with age was modest (0.1% per year). Higher epithelial proportion was associated with obesity (7.6% in nonobese vs. 10.1% in obese; P = 0.02) and with poorly differentiated tumors (7.8% in well/moderate vs. 9.9% in poor; P = 0.05). Gene expression signatures associated with epithelial and stromal proportion were identified and validated. Stroma-associated genes were in metabolism and stem cell maintenance pathways, whereas epithelial genes were enriched for cytokine and immune response pathways. CONCLUSIONS Breast tissue composition was associated with age, body mass index, and tumor grade, with consequences for breast gene expression. IMPACT Breast tissue morphologic factors may influence breast cancer etiology. Composition and gene expression may act as biomarkers of breast cancer risk and progression.
Collapse
Affiliation(s)
| | - Rupninder Sandhu
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Jonine D Figueroa
- Hormonal and Reproductive Epidemiology Branch, Division of Cancer Epidemiology and Genetics, and
| | - Gretchen L Gierach
- Hormonal and Reproductive Epidemiology Branch, Division of Cancer Epidemiology and Genetics, and
| | - Mark E Sherman
- Hormonal and Reproductive Epidemiology Branch, Division of Cancer Epidemiology and Genetics, and Breast and Gynecologic Cancer Research Group, Division of Cancer Prevention, National Cancer Institute, Bethesda, Maryland
| | - Melissa A Troester
- Department of Epidemiology and Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.
| |
Collapse
|
232
|
Laamiri FZ, Bouayad A, Otmani A, Ahid S, Mrabet M, Barkat A. Dietery factor obesity microenvironnement and breast cancer. Gland Surg 2014; 3:165-73. [PMID: 25207209 DOI: 10.3978/j.issn.2227-684x.2014.06.01] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2014] [Accepted: 06/07/2014] [Indexed: 11/14/2022]
Abstract
BACKGROUND Breast cancer is a multifactorial disease. Factors most often mentioned risks are those related to the environment, genetics, hormones and individual behaviors. Among these include alcohol, smoking, sedentary lifestyle and eating habits. Identification of eating and the role of nutritional factors may be involved in cancer risk have been studied extensively since nearly 40 years. PURPOSE We conducted a study of breast cancer type case-control with food frequency questionnaire to assess the causal relationship between dietary factor, obesity and breast cancer risk. PATIENTS AND METHODS female patients with breast cancer were compared to healthy controls at the National Institute of Oncology of Rabat during 2008-2010 and were interviewed for epidemiological information and for their eating habits. RESULTS A total of 800 women were included in this study (400 cases and 400 controls). Result of univariate analysis showed that significant factors associated with the etiologie of breast cancer: high body mass index (BMI) [odds ratio (OR) =1.30; 95% confidence interval (CI), 1.25-1.37], red meat (OR =1.33; 95% CI, 1.27-1.40), processed meat (OR =1.44; 95% CI, 1.35-1.54), eggs (OR =1.20; 95% CI, 1.14-1.23), poultry (OR =0.70; 95% CI, 0.60-0.80), fish (OR =0.67; 95% CI, 0.61-0.73), fruit (OR =0.67; 95% CI, 0.62-0.72), and vegetable (OR=0.72; 95% CI, 0.67-0.78). Multivariate analysis indicated that a significantly elevated risk of contracting breast cancer was associated with higher BMI (OR =9.61; 95% CI, 6.1-15.15), red meat (OR =4.61; 95% CI, 2.26-9.44) and processed meat (OR =9.78; 95% CI, 4.73-20.24). In contrast consumption of fish (OR =0.07; 95% CI, 0.02-0.24), poultry (OR =0.61; 95% CI, 0.46-0.81), fruit (OR =0.001; 95% CI, 0.00-0.004), and vegetable (OR =0.82; 95% CI, 0.22-3.08) remained as significant beneficial factor associated with breast cancer. CONCLUSIONS This study is rather in favour of positive association between obesity, consumption of food rich in fatty matter and breast cancer, which is consistent with data from the literature using the same type of investigation. These results encourage increased cohort studies, case-control and experimentation in order to achieve a genuine code of cancer prevention, to define with precision the positive and negative.
Collapse
Affiliation(s)
- Fatima Zahra Laamiri
- 1 Research team in maternal/child health and nutrition, Faculty of Medicine and Pharmacy of Mohammed V-Souissi University, Rabat, Morocco ; 2 Laboratoire d'Immunologie, Institut Pasteur de Maroc, Casablanca, Médecin spécialiste en Immunologie; 3 the Faculty of Medicine and Pharmacy/Surgeon at the National Institute of Oncology, Rabat, Morocco ; 4 the Faculty of Medicine and Pharmacy and the Pharmacy Unit at the National Institute of Oncology, Rabat, Morocco
| | - Abdellatif Bouayad
- 1 Research team in maternal/child health and nutrition, Faculty of Medicine and Pharmacy of Mohammed V-Souissi University, Rabat, Morocco ; 2 Laboratoire d'Immunologie, Institut Pasteur de Maroc, Casablanca, Médecin spécialiste en Immunologie; 3 the Faculty of Medicine and Pharmacy/Surgeon at the National Institute of Oncology, Rabat, Morocco ; 4 the Faculty of Medicine and Pharmacy and the Pharmacy Unit at the National Institute of Oncology, Rabat, Morocco
| | - Azzedine Otmani
- 1 Research team in maternal/child health and nutrition, Faculty of Medicine and Pharmacy of Mohammed V-Souissi University, Rabat, Morocco ; 2 Laboratoire d'Immunologie, Institut Pasteur de Maroc, Casablanca, Médecin spécialiste en Immunologie; 3 the Faculty of Medicine and Pharmacy/Surgeon at the National Institute of Oncology, Rabat, Morocco ; 4 the Faculty of Medicine and Pharmacy and the Pharmacy Unit at the National Institute of Oncology, Rabat, Morocco
| | - Samir Ahid
- 1 Research team in maternal/child health and nutrition, Faculty of Medicine and Pharmacy of Mohammed V-Souissi University, Rabat, Morocco ; 2 Laboratoire d'Immunologie, Institut Pasteur de Maroc, Casablanca, Médecin spécialiste en Immunologie; 3 the Faculty of Medicine and Pharmacy/Surgeon at the National Institute of Oncology, Rabat, Morocco ; 4 the Faculty of Medicine and Pharmacy and the Pharmacy Unit at the National Institute of Oncology, Rabat, Morocco
| | - Mustapha Mrabet
- 1 Research team in maternal/child health and nutrition, Faculty of Medicine and Pharmacy of Mohammed V-Souissi University, Rabat, Morocco ; 2 Laboratoire d'Immunologie, Institut Pasteur de Maroc, Casablanca, Médecin spécialiste en Immunologie; 3 the Faculty of Medicine and Pharmacy/Surgeon at the National Institute of Oncology, Rabat, Morocco ; 4 the Faculty of Medicine and Pharmacy and the Pharmacy Unit at the National Institute of Oncology, Rabat, Morocco
| | - Amina Barkat
- 1 Research team in maternal/child health and nutrition, Faculty of Medicine and Pharmacy of Mohammed V-Souissi University, Rabat, Morocco ; 2 Laboratoire d'Immunologie, Institut Pasteur de Maroc, Casablanca, Médecin spécialiste en Immunologie; 3 the Faculty of Medicine and Pharmacy/Surgeon at the National Institute of Oncology, Rabat, Morocco ; 4 the Faculty of Medicine and Pharmacy and the Pharmacy Unit at the National Institute of Oncology, Rabat, Morocco
| |
Collapse
|
233
|
Song J, Xue K, She J, Ding F, Li S, Shangguan R, Dai Y, Du L, Li N. A mammary repopulating cell population characterized in mammary anlagen reveals essential mammary stroma for morphogenesis. Exp Cell Res 2014; 327:123-34. [DOI: 10.1016/j.yexcr.2014.06.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2014] [Revised: 04/30/2014] [Accepted: 06/12/2014] [Indexed: 11/29/2022]
|
234
|
Expression of BTG1 in hepatocellular carcinoma and its correlation with cell cycles, cell apoptosis, and cell metastasis. Tumour Biol 2014; 35:11771-9. [PMID: 25173640 DOI: 10.1007/s13277-014-2298-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2014] [Accepted: 06/30/2014] [Indexed: 01/22/2023] Open
Abstract
This study aimed to analyze the expression, clinical significance of B cell translocation gene 1 (BTG1) in hepatocellular carcinoma, and the biological effect in its cell line by BTG1 overexpression. Immunohistochemistry and Western blot were used to analyze BTG1 protein expression in 70 cases of hepatocellular cancer and 32 cases of normal tissues to study the relationship between BTG1 expression and clinical factors. Recombinant lentiviral vector was constructed to overexpress BTG1 and then infect hepatocellular cancer HepG2 cell line. The level of BTG1 protein expression was found to be significantly lower in hepatocellular cancer tissue than normal tissues (P < 0.05). Decreased expression of BTG1 was significantly correlated with tumor invasion, lymph node metastasis, clinic stage, and histological grade of patients with hepatocellular cancer (P < 0.05). Meanwhile, loss of BTG1 expression correlated significantly with poor overall survival time by Kaplan-Meier analysis (P < 0.05). The result of biological function has shown that HepG2 cell-transfected BTG1 had a lower survival fraction; higher percentage of the G0/G1 phases; higher cell apoptosis; significant decrease in migration and invasion; and lower Cyclin D1 (CND1), B cell lymphoma 2 (Bcl-2), and matrix metalloproteinases (MMP)-9 protein expression compared with HepG2 cell-untransfected BTG1 (P < 0.05). BTG1 expression decreased in hepatocellular cancer and correlated significantly with lymph node metastasis, clinic stage, histological grade, poor overall survival, proliferation, and metastasis in hepatocellular cancer cell by regulating CND1, Bcl-2, and MMP-9 protein expression, suggesting that BTG1 may play important roles as a negative regulator to hepatocellular cancer cell.
Collapse
|
235
|
Cytotoxic activity of 3,6-dihydroxyflavone in human cervical cancer cells and its therapeutic effect on c-Jun N-terminal kinase inhibition. Molecules 2014; 19:13200-11. [PMID: 25165860 PMCID: PMC6271811 DOI: 10.3390/molecules190913200] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Revised: 08/18/2014] [Accepted: 08/22/2014] [Indexed: 12/21/2022] Open
Abstract
Previously we have shown that 3,6-dihydroxyflavone (3,6-DHF) is a potent agonist of the human peroxisome proliferator-activated receptor (hPPAR) with cytotoxic effects on human cervical cancer cells. To date, the mechanisms by which 3,6-DHF exerts its antitumor effects on cervical cells have not been clearly defined. Here, we demonstrated that 3,6-DHF exhibits a novel antitumor activity against HeLa cells with IC50 values of 25 μM and 9.8 μM after 24 h and 48 h, respectively. We also showed that the anticancer effects of 3,6-DHF are mediated via the toll-like receptor (TLR) 4/CD14, p38 mitogen-activated protein kinase (MAPK), Jun-N terminal kinase (JNK), extracellular-signaling regulated kinase (ERK), and cyclooxygenase (COX)-2 pathways in lipopolysaccharide (LPS)-stimulated RAW264.7 cells. We found that 3,6-DHF showed a similar IC50 (113 nM) value to that of the JNK inhibitor, SP600125 (IC50 = 118 nM) in a JNK1 kinase assay. Binding studies revealed that 3,6-DHF had a strong binding affinity to JNK1 (1.996 × 105 M-1) and that the 6-OH and the carbonyl oxygen of the C ring of 3,6-DHF participated in hydrogen bonding interactions with the carbonyl oxygen and the amide proton of Met111, respectively. Therefore, 3,6-DHF may be a candidate inhibitor of JNKs, with potent anticancer effects.
Collapse
|
236
|
Cheung KJ, Ewald AJ. Illuminating breast cancer invasion: diverse roles for cell-cell interactions. Curr Opin Cell Biol 2014; 30:99-111. [PMID: 25137487 DOI: 10.1016/j.ceb.2014.07.003] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2014] [Revised: 07/26/2014] [Accepted: 07/28/2014] [Indexed: 02/08/2023]
Abstract
Metastasis begins when tumors invade into surrounding tissues. In breast cancer, the study of cell interactions has provided fundamental insights into this complex process. Powerful intravital and 3D organoid culture systems have emerged that enable biologists to model the complexity of cell interactions during cancer invasion in real-time. Recent studies utilizing these techniques reveal distinct mechanisms through which multiple cancer cell and stromal cell subpopulations interact, including paracrine signaling, direct cell-cell adhesion, and remodeling of the extracellular matrix. Three cell interaction mechanisms have emerged to explain how breast tumors become invasive: epithelial-mesenchymal transition, collective invasion, and the macrophage-tumor cell feedback loop. Future work is needed to distinguish whether these mechanisms are mutually exclusive or whether they cooperate to drive metastasis.
Collapse
Affiliation(s)
- Kevin J Cheung
- Department of Cell Biology, Center for Cell Dynamics, School of Medicine, Johns Hopkins University, 855 N. Wolfe St, 452 Rangos Bldg, Baltimore, MD 21205, USA; Department of Oncology, School of Medicine, Johns Hopkins University, 855 N. Wolfe St, 452 Rangos Bldg, Baltimore, MD 21205, USA.
| | - Andrew J Ewald
- Department of Cell Biology, Center for Cell Dynamics, School of Medicine, Johns Hopkins University, 855 N. Wolfe St, 452 Rangos Bldg, Baltimore, MD 21205, USA; Department of Oncology, School of Medicine, Johns Hopkins University, 855 N. Wolfe St, 452 Rangos Bldg, Baltimore, MD 21205, USA.
| |
Collapse
|
237
|
Okolicsanyi RK, Faure M, Jacinto JM, Chacon-Cortes D, Chambers S, Youl PH, Haupt LM, Griffiths LR. Association of the SNP rs2623047 in the HSPG modification enzyme SULF1 with an Australian Caucasian Breast Cancer Cohort. Gene 2014; 547:50-4. [DOI: 10.1016/j.gene.2014.06.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Revised: 05/25/2014] [Accepted: 06/05/2014] [Indexed: 11/16/2022]
|
238
|
Cheng Q, Chang JT, Gwin WR, Zhu J, Ambs S, Geradts J, Lyerly HK. A signature of epithelial-mesenchymal plasticity and stromal activation in primary tumor modulates late recurrence in breast cancer independent of disease subtype. Breast Cancer Res 2014; 16:407. [PMID: 25060555 PMCID: PMC4187325 DOI: 10.1186/s13058-014-0407-9] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2013] [Accepted: 07/04/2014] [Indexed: 01/08/2023] Open
Abstract
Introduction Despite improvements in adjuvant therapy, late systemic recurrences remain a lethal consequence of both early- and late-stage breast cancer. A delayed recurrence is thought to arise from a state of tumor dormancy, but the mechanisms that govern tumor dormancy remain poorly understood. Methods To address the features of breast tumors associated with late recurrence, but not confounded by variations in systemic treatment, we compiled breast tumor gene expression data from 4,767 patients and established a discovery cohort consisting of 743 lymph node-negative patients who did not receive systemic neoadjuvant or adjuvant therapy. We interrogated the gene expression profiles of the 743 tumors and identified gene expression patterns that were associated with early and late disease recurrence among these patients. We applied this classification to a subset of 46 patients for whom expression data from microdissected tumor epithelium and stroma was available, and identified a distinct gene signature in the stroma and also a corresponding tumor epithelium signature that predicted disease recurrence in the discovery cohort. This tumor epithelium signature was then validated as a predictor for late disease recurrence in the entire cohort of 4,767 patients. Results We identified a novel 51-gene signature from microdissected tumor epithelium associated with late disease recurrence in breast cancer independent of the molecular disease subtype. This signature correlated with gene expression alterations in the adjacent tumor stroma and describes a process of epithelial to mesenchymal transition (EMT) and tumor-stroma interactions. Conclusions Our findings suggest that an EMT-related gene signature in the tumor epithelium is related to both stromal activation and escape from disease dormancy in breast cancer. The presence of a late recurrence gene signature in the primary tumor also suggests that intrinsic features of this tumor regulate the transition of disseminated tumor cells into a dormant phenotype with the ability to outgrowth as recurrent disease. Electronic supplementary material The online version of this article (doi:10.1186/s13058-014-0407-9) contains supplementary material, which is available to authorized users.
Collapse
|
239
|
Gurusamy D, Ruiz-Torres SJ, Johnson AL, Smith DA, Waltz SE. Hepatocyte growth factor-like protein is a positive regulator of early mammary gland ductal morphogenesis. Mech Dev 2014; 133:11-22. [PMID: 25049204 DOI: 10.1016/j.mod.2014.07.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Revised: 05/15/2014] [Accepted: 07/08/2014] [Indexed: 12/15/2022]
Abstract
The Ron receptor tyrosine kinase regulates multiple cellular processes and is important during mammary gland development and tumor progression. Hepatocyte growth factor-like protein [HGFL] is the only known ligand for the Ron receptor and recent studies have identified major roles for HGFL during breast cancer metastasis. Understanding the functional importance HGFL during mammary gland development will provide significant insights onto its contribution during tumor development and metastasis. In this study, we assessed the role of HGFL during postnatal mammary gland development using mice that were either proficient [HGFL +/+] or deficient [HGFL-/-] for HGFL. Postnatal ductal morphology and stromal cell associations were analyzed at multiple time points through puberty until adulthood. HGFL deficiency resulted in several mammary gland developmental defects including smaller terminal end buds [TEBs], significantly fewer TEBs, and delayed ductal outgrowth during early puberty. Additionally, HGFL deficient animals exhibited significantly altered TEB epithelial cell turnover with decreased proliferation and increased apoptosis coupled with decreased TEB diameter. Macrophage recruitment to the TEBs was also significantly decreased in the HGFL-/- mice compared to controls. Moreover, the levels of STAT3 mRNA as well as the phosphorylation status of this protein were lower in the HGFL-/- mammary glands compared to controls. Taken together, our data provide the first evidence for HGFL as a positive regulator of mammary gland ductal morphogenesis by controlling overall epithelial cell turnover, macrophage recruitment, and STAT3 activation in the developing mammary gland. With a function in early mammary gland development, HGFL represents a potential target for the development of novel breast cancer therapies.
Collapse
Affiliation(s)
- Devikala Gurusamy
- Department of Cancer Biology, University of Cincinnati College of Medicine, Cincinnati, OH 45267-0521, USA
| | - Sasha J Ruiz-Torres
- Department of Cancer Biology, University of Cincinnati College of Medicine, Cincinnati, OH 45267-0521, USA
| | - Abby L Johnson
- Department of Environmental Health, University of Cincinnati College of Medicine, Cincinnati, OH 45267-0521, USA
| | - Dana A Smith
- Department of Cancer Biology, University of Cincinnati College of Medicine, Cincinnati, OH 45267-0521, USA
| | - Susan E Waltz
- Department of Cancer Biology, University of Cincinnati College of Medicine, Cincinnati, OH 45267-0521, USA; Research Service, Cincinnati Veterans Hospital Medical Center, Cincinnati, OH 45267-0521, USA.
| |
Collapse
|
240
|
Similarity of fibroglandular breast tissue content measured from magnetic resonance and mammographic images and by a mathematical algorithm. Int J Breast Cancer 2014; 2014:961679. [PMID: 25132995 PMCID: PMC4123610 DOI: 10.1155/2014/961679] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2014] [Revised: 06/02/2014] [Accepted: 06/03/2014] [Indexed: 01/16/2023] Open
Abstract
Women with high breast density (BD) have a 4- to 6-fold greater risk for breast cancer than women with low BD. We found that BD can be easily computed from a mathematical algorithm using routine mammographic imaging data or by a curve-fitting algorithm using fat and nonfat suppression magnetic resonance imaging (MRI) data. These BD measures in a strictly defined group of premenopausal women providing both mammographic and breast MRI images were predicted as well by the same set of strong predictor variables as were measures from a published laborious histogram segmentation method and a full field digital mammographic unit in multivariate regression models. We also found that the number of completed pregnancies, C-reactive protein, aspartate aminotransferase, and progesterone were more strongly associated with amounts of glandular tissue than adipose tissue, while fat body mass, alanine aminotransferase, and insulin like growth factor-II appear to be more associated with the amount of breast adipose tissue. Our results show that methods of breast imaging and modalities for estimating the amount of glandular tissue have no effects on the strength of these predictors of BD. Thus, the more convenient mathematical algorithm and the safer MRI protocols may facilitate prospective measurements of BD.
Collapse
|
241
|
Lu YF, Sun GG, Liu Q, Yang CR, Cheng YJ. BTG1 expression in thyroid carcinoma: diagnostic indicator and prognostic marker. Int J Oncol 2014; 45:1574-82. [PMID: 25017022 DOI: 10.3892/ijo.2014.2543] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2014] [Accepted: 05/21/2014] [Indexed: 11/05/2022] Open
Abstract
We determined the expression and function of B cell translocation gene 1 (BTG1) in thyroid carcinoma. Thyroid samples were obtained from cancer lesions (n=83) and adjacent normal tissue (n=35) in thyroid cancer patients immediately after endoscopic biopsy. BTG1 expression was determined by immunohistochemistry and western blotting. The effect of BTG1 overexpression was examined in vitro utilizing the human thyroid cancer cell line FTC-133, stably transfected with a recombinant lentivirus (LeBTG1 cells) and compared to empty vector transfected controls (LeEmpty). BTG1 overexpression was verified by reverse transcription quantitative polymerase chain reaction (RT-qPCR) and western blotting. The expression of proteins involved in cell cycle regulation (cyclin D1), apoptosis (Bcl-2) and cell migration (MMP-9) in LeBTG1 cells was analyzed by western blotting. The effect of BTG1 overexpression on cell viability and proliferation was assessed by MTT assay in LeBTG1 and LeEmpty cells. Flow cytometric analyses were used to evaluate the effect of BTG1 expression on cell cycle distribution and apoptosis. The migration and invasion potential of LeBTG1 cells was examined by plating cells in Matrigel-coated chambers. BTG1 protein expression was significantly lower in thyroid cancer tissue biopsies compared to normal tissue as measured by immunohistochemistry (36.1 vs. 80.0% of tissues; P<0.05) and western blotting (0.251±0.021 vs. 0.651±0.065; P<0.05). Decreased expression of BTG1 was significantly correlated with thyroid cancer lymph node metastasis, clinical stage and pathological differentiation (P<0.05), as well as with reduced overall 10‑year survival rates compared to patients with higher expression levels (30.2 vs. 66.7%; P<0.05). In vitro analyses revealed that LeBTG1 cells had a reduced survival fraction compared to control LeEmpty cells, with higher rates of apoptosis (11.6±2.1 vs. 2.1±0.4%; P<0.05). The proportion of LeBTG1 cells in G0/G1 stage and S phase was also significantly different from LeEmpty cells (81.8±6.3 and 10.2±1.0%, vs. 62.4±4.9 and 25.5±2.6%, respectively; P<0.05), and the migration and invasion of LeBTG1 cells was significantly impaired with respect to LeEmpty cells (72.0±8.0 and 55.0±7.0 vs. 113.0±16.0 and 89.0±9.0, respectively; P<0.05). These effects were accompanied by decreased protein expression of cyclin D1, Bcl-2 and MMP-9 in LeBTG1 cells (0.234±0.018, 0.209±0.021, 0.155±0.017, respectively) compared to control LeEmpty cells (0.551±0.065, 0.452±0.043, 0.609±0.072, respectively; P<0.05). Reduced BTG1 expression is associated with increased disease severity, suggesting it is a negative regulator of thyroid cancer and can serve as a prognostic indicator.
Collapse
Affiliation(s)
- Y F Lu
- Department of Endocrinology, Tangshan Workers Hospital, Tangshan 063000, P.R. China
| | - G G Sun
- Department of Chemoradiotherapy, Tangshan People's Hospital, Tangshan 063000, P.R. China
| | - Q Liu
- Department of Radiotherapy, The Fourth Hospital of Hebei Medical University, Shijiazhuang 050017, P.R. China
| | - C R Yang
- Department of Radiotherapy, The Fourth Hospital of Hebei Medical University, Shijiazhuang 050017, P.R. China
| | - Y J Cheng
- Department of Radiotherapy, The Fourth Hospital of Hebei Medical University, Shijiazhuang 050017, P.R. China
| |
Collapse
|
242
|
Boyd NF, Li Q, Melnichouk O, Huszti E, Martin LJ, Gunasekara A, Mawdsley G, Yaffe MJ, Minkin S. Evidence that breast tissue stiffness is associated with risk of breast cancer. PLoS One 2014; 9:e100937. [PMID: 25010427 PMCID: PMC4091939 DOI: 10.1371/journal.pone.0100937] [Citation(s) in RCA: 99] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2014] [Accepted: 06/02/2014] [Indexed: 11/18/2022] Open
Abstract
Background Evidence from animal models shows that tissue stiffness increases the invasion and progression of cancers, including mammary cancer. We here use measurements of the volume and the projected area of the compressed breast during mammography to derive estimates of breast tissue stiffness and examine the relationship of stiffness to risk of breast cancer. Methods Mammograms were used to measure the volume and projected areas of total and radiologically dense breast tissue in the unaffected breasts of 362 women with newly diagnosed breast cancer (cases) and 656 women of the same age who did not have breast cancer (controls). Measures of breast tissue volume and the projected area of the compressed breast during mammography were used to calculate the deformation of the breast during compression and, with the recorded compression force, to estimate the stiffness of breast tissue. Stiffness was compared in cases and controls, and associations with breast cancer risk examined after adjustment for other risk factors. Results After adjustment for percent mammographic density by area measurements, and other risk factors, our estimate of breast tissue stiffness was significantly associated with breast cancer (odds ratio = 1.21, 95% confidence interval = 1.03, 1.43, p = 0.02) and improved breast cancer risk prediction in models with percent mammographic density, by both area and volume measurements. Conclusion An estimate of breast tissue stiffness was associated with breast cancer risk and improved risk prediction based on mammographic measures and other risk factors. Stiffness may provide an additional mechanism by which breast tissue composition is associated with risk of breast cancer and merits examination using more direct methods of measurement.
Collapse
Affiliation(s)
- Norman F. Boyd
- Campbell Family Institute for Breast Cancer Research, Ontario Cancer Institute, Toronto, Ontario, Canada
- * E-mail:
| | - Qing Li
- Campbell Family Institute for Breast Cancer Research, Ontario Cancer Institute, Toronto, Ontario, Canada
| | - Olga Melnichouk
- Campbell Family Institute for Breast Cancer Research, Ontario Cancer Institute, Toronto, Ontario, Canada
| | - Ella Huszti
- Campbell Family Institute for Breast Cancer Research, Ontario Cancer Institute, Toronto, Ontario, Canada
| | - Lisa J. Martin
- Campbell Family Institute for Breast Cancer Research, Ontario Cancer Institute, Toronto, Ontario, Canada
| | - Anoma Gunasekara
- Imaging Research, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
| | - Gord Mawdsley
- Imaging Research, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
| | - Martin J. Yaffe
- Imaging Research, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
| | - Salomon Minkin
- Campbell Family Institute for Breast Cancer Research, Ontario Cancer Institute, Toronto, Ontario, Canada
| |
Collapse
|
243
|
Bielli A, Scioli MG, Gentile P, Agostinelli S, Tarquini C, Cervelli V, Orlandi A. Adult adipose-derived stem cells and breast cancer: a controversial relationship. SPRINGERPLUS 2014; 3:345. [PMID: 25089245 PMCID: PMC4117859 DOI: 10.1186/2193-1801-3-345] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/15/2014] [Accepted: 06/11/2014] [Indexed: 01/13/2023]
Abstract
Breast cancer is the most common cancer in women and autologous fat grafting is an important clinical application in treatment of post-surgical deformities. The simplicity of fat grafting procedures and the absence of subsequent visible scar prompted an increasing interest for this technique. The plasticity of adipose-derived stem cells (ASCs) obtained from stromal vascular fraction (SVF) of adult adipose tissue provided exciting perspectives for regenerative medicine and surgery. The recent discovery that SVF/ASC enrichment further ameliorates clinical efficacy of grafting ASCs suggest as ASC-mediated new adipogenesis and vasculogenesis. ASC adipogenic differentiation involves Akt activity and EGFRs, FGFRs, ERbB2 receptor-mediated pathways that also play a pivotal role in the regulation of breast cancer growth. Moreover, the finding that platelet-derived growth factors and hormones improved long-term maintenance of fat grafting raises new concerns for their use during breast reconstruction after cancer surgery. However, it remains unclear whether grafted or resident ASCs may increase the risk of de novo cancer development or recurrence. Preliminary follow-up studies seem to support the efficacy and safety of SVF/ASCs enrichment and the additional benefit from the combined use of autologous platelet-derived growth factors and hormones during breast reconstruction procedures. In the present review we highlighted the complex interplay between resident or grafted ASCs, mature adipocytes, dormant or active breast cancer cells and tumor microenvironment. Actually, data concerning the permissive role of ASCs on breast cancer progression are contrasting, although no clear evidence speaking against their use exists.
Collapse
Affiliation(s)
- Alessandra Bielli
- Anatomic Pathology, Tor Vergata University of Rome, Via Montpellier, 00133 Rome, Italy
| | - Maria Giovanna Scioli
- Anatomic Pathology, Tor Vergata University of Rome, Via Montpellier, 00133 Rome, Italy
| | - Pietro Gentile
- Plastic Surgery, Department of Biomedicine and Prevention, Tor Vergata University, Rome, Italy
| | - Sara Agostinelli
- Anatomic Pathology, Tor Vergata University of Rome, Via Montpellier, 00133 Rome, Italy
| | - Chiara Tarquini
- Anatomic Pathology, Tor Vergata University of Rome, Via Montpellier, 00133 Rome, Italy
| | - Valerio Cervelli
- Plastic Surgery, Department of Biomedicine and Prevention, Tor Vergata University, Rome, Italy
| | - Augusto Orlandi
- Anatomic Pathology, Tor Vergata University of Rome, Via Montpellier, 00133 Rome, Italy
| |
Collapse
|
244
|
Sun GG, Wang YD, Cheng YJ, Hu WN. The expression of BTG1 is downregulated in nasopharyngeal carcinoma and possibly associated with tumour metastasis. Mol Biol Rep 2014; 41:5979-88. [PMID: 24985971 DOI: 10.1007/s11033-014-3475-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Accepted: 06/14/2014] [Indexed: 01/09/2023]
Abstract
To determine the expression and function of B cell translocation gene 1 (BTG1) in nasopharyngeal carcinoma. Nasopharyngeal samples were taken from cancer lesions (n = 75) and adjacent normal tissue (n = 33) in nasopharyngeal cancer patients immediately after endoscopic biopsy. BTG1 expression was determined by immunohistochemistry and Western blotting. The effect of BTG1 overexpression was examined in vitro utilizing a human nasopharyngeal cancer cell line CNE2 stably transfected with a recombinant lentivirus (LeBTG1 cells) and compared to empty vector-transfected controls (LeEmpty). BTG1 overexpression was verified by real-time reverse transcriptase polymerase chain reaction and Western blot. The expression of proteins involved in cell cycle regulation (cyclin D1), apoptosis (Bcl-2) and cell migration (MMP-9) in LeBTG1 cells were analyzed by Western blot. The effect of BTG1 overexpression on cell viability and proliferation was assessed by an MTT assay in LeBTG1 and LeEmpty cells. Flow cytometric analyses were used to evaluate the effect of BTG1 expression on cell cycle distribution and apoptosis. The migration and invasion potential of LeBTG1 cells was examined by plating cells in Matrigel-coated chambers. BTG1 protein expression was significantly lower in nasopharyngeal cancer tissue biopsies than normal tissue as measured by immunohistochemistry (36.0 vs. 81.8 % of tissues; P < 0.05) and Western blotting (0.221 ± 0.019 vs. 0.652 ± 0.055; P < 0.05). Decreased expression of BTG1 was significantly correlated with nasopharyngeal cancer tumor stage, lymph node metastasis, clinical stage and pathologic differentiation (P < 0.05), as well as with reduced overall five-year survival rates compared to patients with higher expression levels (31.2 vs. 70.2 %; P < 0.05). In vitro analyses revealed that LeBTG1 cells had a reduced survival fraction compared to control LeEmpty cells, with higher rates of apoptosis (9.3 ± 0.7 vs. 2.3 ± 0.3 %; P < 0.05). The proportion of LeBTG1 cells in G0/G1 stage and S phase was also significantly different from LeEmpty cells (82.6 ± 3.8 and 10.1 ± 1.0 %, vs. 62.2 ± 2.4 and 28.9 ± 2.0 %, respectively; Ps < 0.05), and the migration and invasion of LeBTG1 cells was significantly impaired with respect to LeEmpty cells (96.0 ± 13.0 and 91.0 ± 11.0 vs. 158.0 ± 17.0 and 142.0 ± 15.0, respectively; Ps < 0.05). These effects were accompanied by decreased protein expression of cyclin D1, Bcl-2 and MMP-9 in LeBTG1 cells (0.231 ± 0.021, 0.413 ± 0.046, 0.131 ± 0.011, respectively) compared to control LeEmpty cells (0.636 ± 0.067, 0.821 ± 0.083, 0.451 ± 0.041, respectively; Ps < 0.05). Reduced BTG1 expression is associated with increased disease severity, suggesting it is a negative regulator of nasopharyngeal cancer and can serve as a prognostic indicator.
Collapse
Affiliation(s)
- G G Sun
- Department of Chemoradiotherapy, Tangshan People's Hospital, NO. 65, Shengli Road, Lunan District, Tangshan, 063000, Hebei province, China,
| | | | | | | |
Collapse
|
245
|
CMV-induced pathology: pathway and gene-gene interaction analysis. Exp Mol Pathol 2014; 97:154-65. [PMID: 24984270 DOI: 10.1016/j.yexmp.2014.06.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2014] [Accepted: 06/27/2014] [Indexed: 01/01/2023]
Abstract
Mucoepidermoid carcinoma (MEC) is the most prevalent malignant tumor in major and minor salivary glands (SGs). We have recently identified human cytomegalovirus (hCMV) as a principle component in the multifactorial causation of SG-MEC. This finding is corroborated by the ability of the purified mouse CMV (mCMV) to induce malignant transformation of SG cells in a three-dimensional in vitro mouse model, using a similar oncogenic signaling pathway. Our prior studies indicate that the core tumor microenvironment (TME) is a key regulator of pathologic progression, particularly the cancer-associated fibroblast (CAF) component. Studies of early CAFs immunodetect aberrant expression of ECM components, as well as multiple growth factors, cytokines and transcription factors. Here we present the mechanistic insight derived from a mathematical structure ("wiring diagram") used to model complex relationships between a highly relevant (p=9.43×10(-12)) global "cancer network" of 32 genes and their known links. Detailed characterization of the functional architecture of the examined "cancer network" exposes the critical crosstalk and compensatory pathways that limit the efficacy of targeted anti-kinase therapies.
Collapse
|
246
|
Sun GG, Wang YD, Cheng YJ, Hu WN. BTG1 underexpression is an independent prognostic marker in esophageal squamous cell carcinoma. Tumour Biol 2014; 35:9707-16. [PMID: 24969561 DOI: 10.1007/s13277-014-2245-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2014] [Accepted: 06/16/2014] [Indexed: 01/05/2023] Open
Abstract
To determine the expression and function of B cell translocation gene 1 (BTG1) in esophageal carcinoma, esophageal samples were taken from cancer lesions (n = 74) and adjacent normal tissue (n = 34) in esophageal cancer patients immediately after endoscopic biopsy. BTG1 expression was determined by immunohistochemistry and Western blotting. The effect of BTG1 overexpression was examined in vitro utilizing a human esophageal cancer cell line ECA-109 stably transfected with a recombinant lentivirus (LeBTG1 cells) and compared to empty vector-transfected controls (LeEmpty). BTG1 overexpression was verified by real-time reverse transcriptase polymerase chain reaction (RT-PCR) and Western blot. The expression of proteins involved in cell cycle regulation (cyclin D1) and apoptosis (Bcl-2) and cell migration (MMP-9) in LeBTG1 cells was analyzed by Western blot. The effect of BTG1 overexpression on cell viability and proliferation was assessed by an MTT assay in LeBTG1 and LeEmpty cells. Flow cytometric analyses were used to evaluate the effect of BTG1 expression on cell cycle distribution and apoptosis. The migration and invasion potential of LeBTG1 cells was examined by plating cells in Matrigel-coated chambers. The level of BTG1 protein expression was found to be significantly lower in esophageal cancer tissue than normal tissues (P < 0.05). Decreased expression of BTG1 was significantly correlated with lymph node metastasis, clinical stage, and histological grade of patients with esophageal cancer (P < 0.05). Meanwhile, loss of BTG1 expression correlated significantly with poor overall survival time by Kaplan-Meier analysis (P < 0.05). The result of biological function shown that Eca-109 cell-transfected BTG1 had a lower survival fraction, higher percentage of the G0/G1 phases, higher cell apoptosis, significant decrease in migration and invasion, and lower cylin D1, Bcl-2, and MMP-9 protein expression compared with Eca-109 cell-untransfected BTG1 (P < 0.05). Reduced BTG1 expression is associated with increased disease severity, suggesting it is a negative regulator of esophageal cancer and can serve as a prognostic indicator.
Collapse
Affiliation(s)
- G G Sun
- Department of Chemoradiotherapy, Tangshan People's Hospital, NO. 65, Shengli road, Lunan district, Tangshan, 063000, Hebei, China,
| | | | | | | |
Collapse
|
247
|
Hughes K, Watson CJ. The spectrum of STAT functions in mammary gland development. JAKSTAT 2014; 1:151-8. [PMID: 24058764 PMCID: PMC3670238 DOI: 10.4161/jkst.19691] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2011] [Revised: 02/08/2012] [Accepted: 02/13/2012] [Indexed: 12/21/2022] Open
Abstract
The signal transducer and activator of transcription (STAT) family of transcription factors have a spectrum of functions in mammary gland development. In some cases these roles parallel those of STATs in other organ systems, while in other instances the function of individual STATs in the mammary gland is specific to this tissue. In the immune system, STAT6 is associated with differentiation of T helper cells, while in the mammary gland, it has a fundamental role in the commitment of luminal epithelial cells to the alveolar lineage. STAT5A is required for the production of luminal progenitor cells from mammary stem cells and is essential for the differentiation of milk producing alveolar cells during pregnancy. By contrast, the initiation of regression following weaning heralds a dramatic and specific activation of STAT3, reflecting its pivotal role in the regulation of cell death and tissue remodeling during mammary involution. Although it has been demonstrated that STAT1 is regulated during a mammary developmental cycle, it is not yet determined whether it has a specific, non-redundant function. Thus, the mammary gland constitutes an unusual example of an adult organ in which different STATs are sequentially activated to orchestrate the processes of functional differentiation, cell death and tissue remodeling.
Collapse
|
248
|
Affiliation(s)
- Elisa Gomez Perdiguero
- Center for Molecular and Cellular Biology of Inflammation-CMCBI, Division of Immunology Infection & Inflammatory Diseases, King's College London, UK
| | - Frederic Geissmann
- Center for Molecular and Cellular Biology of Inflammation-CMCBI, Division of Immunology Infection & Inflammatory Diseases, King's College London, UK.
| |
Collapse
|
249
|
Knower KC, Chand AL, Eriksson N, Takagi K, Miki Y, Sasano H, Visvader JE, Lindeman GJ, Funder JW, Fuller PJ, Simpson ER, Tilley WD, Leedman PJ, Graham JD, Muscat GEO, Clarke CL, Clyne CD. Distinct nuclear receptor expression in stroma adjacent to breast tumors. Breast Cancer Res Treat 2014; 142:211-23. [PMID: 24122391 DOI: 10.1007/s10549-013-2716-6] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2013] [Accepted: 09/26/2013] [Indexed: 12/21/2022]
Abstract
The interaction between breast tumor epithelial and stromal cells is vital for initial and recurrent tumor growth. While breast cancer-associated stromal cells provide a favorable environment for proliferation and metastasis, the molecular mechanisms contributing to this process are not fully understood. Nuclear receptors (NRs) are intracellular transcription factors that directly regulate gene expression. Little is known about the status of NRs in cancer-associated stroma. Nuclear Receptor Low-Density Taqman Arrays were used to compare the gene expression profiles of all 48 NR family members in a collection of primary cultured cancer-associated fibroblasts (CAFs) obtained from estrogen receptor (ER)α positive breast cancers (n = 9) and normal breast adipose fibroblasts (NAFs) (n = 7). Thirty-three of 48 NRs were expressed in both the groups, while 11 NRs were not detected in either. Three NRs (dosage-sensitive sex reversal, adrenal hypoplasia critical region, on chromosome X, gene 1 (DAX-1); estrogen-related receptor beta (ERR-β); and RAR-related orphan receptor beta (ROR-β)) were only detected in NAFs, while one NR (liver receptor homolog-1 (LRH-1)) was unique to CAFs. Of the NRs co-expressed, four were significantly down-regulated in CAFs compared with NAFs (RAR-related orphan receptor-α (ROR-α); Thyroid hormone receptor-β (TR-β); vitamin D receptor (VDR); and peroxisome proliferator-activated receptor-γ (PPAR-γ)). Quantitative immunohistochemistry for LRH-1, TR-β, and PPAR-γ proteins in stromal fibroblasts from an independent panel of breast cancers (ER-positive (n = 15), ER-negative (n = 15), normal (n = 14)) positively correlated with mRNA expression profiles. The differentially expressed NRs identified in tumor stroma are key mediators in aromatase regulation and subsequent estrogen production. Our findings reveal a distinct pattern of NR expression that therefore fits with a sustained and increased local estrogen microenvironment in ER-positive tumors. NRs in CAFs may provide a new avenue for the development of intratumoral-targeted therapies in breast cancer.
Collapse
|
250
|
Casey TM, Crodian J, Erickson E, Kuropatwinski KK, Gleiberman AS, Antoch MP. Tissue-specific changes in molecular clocks during the transition from pregnancy to lactation in mice. Biol Reprod 2014; 90:127. [PMID: 24759789 PMCID: PMC4094001 DOI: 10.1095/biolreprod.113.116137] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2013] [Revised: 01/02/2014] [Accepted: 04/16/2014] [Indexed: 12/20/2022] Open
Abstract
Circadian clocks regulate homeostasis and mediate responses to stressors. Lactation is one of the most energetically demanding periods of an adult female's life. Peripartum changes occur in almost every organ so the dam can support neonatal growth through milk production while homeostasis is maintained. How circadian clocks are involved in adaptation to lactation is currently unknown. The abundance and temporal pattern of core clock genes' expression were measured in suprachiasmatic nucleus, liver, and mammary from late pregnant and early lactation mice. Tissue-specific changes in molecular clocks occurred between physiological states. Amplitude and robustness of rhythms increased in suprachiasmatic nucleus and liver. Mammary rhythms of core molecular clock genes were suppressed. Attenuated rhythms appeared to be a physiological adaptation of mammary to lactation, because manipulation of timing of suckling resulting in significant differences in plasma prolactin and corticosterone had no effect on amplitude. Analysis of core clock proteins revealed that the stoichiometric relationship between positive (CLOCK) and negative (PER2) components remained 1:1 in liver but was increased to 4:1 in mammary during physiological transition. Induction of differentiation of mammary epithelial cell line HC11 with dexamethasone, insulin, and prolactin resulted in similar stoichiometric changes among positive and negative clock regulators, and prolactin induced phase shifts in HC11 Arntl expression rhythm. Data support that distinct mechanisms drive periparturient changes in mammary clock. Stoichiometric change in clock regulators occurs with gland differentiation. Suppression of mammary clock gene expression rhythms represents a physiological adaptation to suckling cues. Adaptations in mammary clock are likely needed in part to support suckling demands of neonates.
Collapse
Affiliation(s)
- Theresa M Casey
- Department of Animal Science, Purdue University, West Lafayette, Indiana
| | - Jennifer Crodian
- Department of Animal Science, Purdue University, West Lafayette, Indiana
| | - Emily Erickson
- Department of Animal Science, Purdue University, West Lafayette, Indiana
| | - Karen K Kuropatwinski
- Department of Molecular and Cellular Biology, Roswell Park Cancer Institute, Buffalo, New York
| | | | - Marina P Antoch
- Department of Molecular and Cellular Biology, Roswell Park Cancer Institute, Buffalo, New York
| |
Collapse
|