1
|
Jia J, Wang Y, Li M, Wang F, Peng Y, Hu J, Li Z, Bian Z, Yang S. Neutrophils in the premetastatic niche: key functions and therapeutic directions. Mol Cancer 2024; 23:200. [PMID: 39277750 PMCID: PMC11401288 DOI: 10.1186/s12943-024-02107-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2024] [Accepted: 09/02/2024] [Indexed: 09/17/2024] Open
Abstract
Metastasis has been one of the primary reasons for the high mortality rates associated with tumours in recent years, rendering the treatment of current malignancies challenging and representing a significant cause of recurrence in patients who have undergone surgical tumour resection. Halting tumour metastasis has become an essential goal for achieving favourable prognoses following cancer treatment. In recent years, increasing clarity in understanding the mechanisms underlying metastasis has been achieved. The concept of premetastatic niches has gained widespread acceptance, which posits that tumour cells establish a unique microenvironment at distant sites prior to their migration, facilitating their settlement and growth at those locations. Neutrophils serve as crucial constituents of the premetastatic niche, actively shaping its microenvironmental characteristics, which include immunosuppression, inflammation, angiogenesis and extracellular matrix remodelling. These characteristics are intimately associated with the successful engraftment and subsequent progression of tumour cells. As our understanding of the role and significance of neutrophils in the premetastatic niche deepens, leveraging the presence of neutrophils within the premetastatic niche has gradually attracted the interest of researchers as a potential therapeutic target. The focal point of this review revolves around elucidating the involvement of neutrophils in the formation and shaping of the premetastatic niche (PMN), alongside the introduction of emerging therapeutic approaches aimed at impeding cancer metastasis.
Collapse
Affiliation(s)
- Jiachi Jia
- Zhengzhou University, Zhengzhou, 450000, China
| | - Yuhang Wang
- Department of Colorectal Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450000, China
| | - Mengjia Li
- Department of Haematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450000, China
| | - Fuqi Wang
- Department of Colorectal Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450000, China
| | - Yingnan Peng
- Department of Haematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450000, China
| | - Junhong Hu
- Department of Colorectal Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450000, China
| | - Zhen Li
- Department of Colorectal Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450000, China.
| | - Zhilei Bian
- Department of Haematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450000, China.
| | - Shuaixi Yang
- Department of Colorectal Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450000, China.
| |
Collapse
|
2
|
Sturgeon R, Goel P, Singh RK. Tumor-associated neutrophils in pancreatic cancer progression and metastasis. Am J Cancer Res 2023; 13:6176-6189. [PMID: 38187037 PMCID: PMC10767342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Accepted: 11/22/2023] [Indexed: 01/09/2024] Open
Abstract
Pancreatic cancer (PC) remains a challenge to modern-day cancer therapeutics, with a dismal five-year survival rate of 12%. Due to the pancreas's location and desmoplasia surrounding it, patients receive late diagnoses and fail to respond to chemotherapy regimens. Tumor-promoting inflammation, one of the emerging hallmarks of cancer, contributes to tumor cells' survival and proliferation. This inflammation often results from infiltrating leukocytes and pro-inflammatory cytokines released into the tumor microenvironment (TME). Neutrophils, one of our body's most prominent immune cells, are essential in sustaining the inflammation observed in the TME. Recent reports demonstrate that neutrophils are complicit in cancer progression and metastasis. Additionally, abundant data suggest that tumor-associated neutrophils (TANs) could be considered as one of the emerging targets for multiple cancer types, including PC. This review will focus on the most recent updates regarding neutrophil recruitments and functions in the cancer microenvironment and the potential development of neutrophils-targeted putative therapeutic strategies in PC.
Collapse
Affiliation(s)
- Reegan Sturgeon
- Department of Pathology and Microbiology, The University of Nebraska Medical Center985845 UNMC, Omaha, NE 68198-5845, USA
| | - Paran Goel
- The University of AlabamaBirmingham, AL 35294-1210, USA
| | - Rakesh K Singh
- Department of Pathology and Microbiology, The University of Nebraska Medical Center985845 UNMC, Omaha, NE 68198-5845, USA
- Department of Pathology and Microbiology, The University of Nebraska Medical Center, 985900 Nebraska Medical CenterOmaha, NE 68198-5900, USA
| |
Collapse
|
3
|
Chen WC, Wu CC, Liu YP, Zhuo GY, Wang YK, Chen YH, Chen CC, Wang YH, Wu MT, Wu IC. Elafin as a Prognostic Marker in Esophageal Squamous Cell Carcinoma: A Pilot Study Using Three-Dimensional Imaging and Genomic Profiling. Cancers (Basel) 2023; 15:3825. [PMID: 37568641 PMCID: PMC10417143 DOI: 10.3390/cancers15153825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 07/25/2023] [Accepted: 07/26/2023] [Indexed: 08/13/2023] Open
Abstract
Esophageal cancers are globally the sixth deadliest malignancy, with limited curative options. The association of high serum elafin levels, a molecule produced by epithelial cells, with esophageal squamous cell carcinoma (ESCC) risk is established, but its link to poor ESCC prognosis remains unclear. To explore this question, we first used three-dimensional confocal imaging to create a model of the spatial distribution of elafin inside locoregional ESCC tissues. Then, after analyzing data obtained from whole-genome microarrays for ESCC cell lines and their more invasive sublines, we performed in vitro experiments using RNA sequencing to identify possible elafin-related pathways. Three-dimensional tissue imaging showed elafin distributed as an interweaved-like fibrous structure in the stroma of tissue obtained from patients with high serum levels of elafin and poorer prognoses. By contrast, the signal was confined inside or around the tumor nest in patients who had lower serum levels and better survival. The analysis of a TCGA dataset revealed that higher levels of elafin mRNA in stage I-IIIA ESCC patients were associated with shorter survival. The in vitro studies revealed that elafin promoted ESCC cell proliferation, migration, and invasion via the epithelial-mesenchymal transition pathway. Thus, elafin inhibition could potentially be used therapeutically to improve survival in patients with locoregional ESCC.
Collapse
Affiliation(s)
- Wei-Chung Chen
- Ph.D. Program in Environmental and Occupational Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan; (W.-C.C.); (M.-T.W.)
| | - Chun-Chieh Wu
- Department of Medicine, Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan; (C.-C.W.); (Y.-K.W.)
- Department of Pathology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Yu-Peng Liu
- Graduate Institute of Clinical Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan;
| | - Guan-Yu Zhuo
- Institute of New Drug Development, China Medical University, Taichung 404, Taiwan;
| | - Yao-Kuang Wang
- Department of Medicine, Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan; (C.-C.W.); (Y.-K.W.)
- Division of Gastroenterology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan;
| | - Yi-Hsun Chen
- Division of Gastroenterology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan;
| | - Chu-Chih Chen
- Division of Biostatistics and Bioinformatics, Institute of Population Health Sciences, National Health Research Institutes, Miaoli 350, Taiwan; (C.-C.C.); (Y.-H.W.)
| | - Yin-Han Wang
- Division of Biostatistics and Bioinformatics, Institute of Population Health Sciences, National Health Research Institutes, Miaoli 350, Taiwan; (C.-C.C.); (Y.-H.W.)
| | - Ming-Tsang Wu
- Ph.D. Program in Environmental and Occupational Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan; (W.-C.C.); (M.-T.W.)
- Department of Family Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - I-Chen Wu
- Department of Medicine, Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan; (C.-C.W.); (Y.-K.W.)
- Division of Gastroenterology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan;
- Center for Cancer Research, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| |
Collapse
|
4
|
Low-molecular-weight cyclin E deregulates DNA replication and damage repair to promote genomic instability in breast cancer. Oncogene 2022; 41:5331-5346. [PMID: 36344674 PMCID: PMC9742291 DOI: 10.1038/s41388-022-02527-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 10/21/2022] [Accepted: 10/25/2022] [Indexed: 11/09/2022]
Abstract
Low-molecular-weight cyclin E (LMW-E) is an N-terminus deleted (40 amino acid) form of cyclin E detected in breast cancer, but not in normal cells or tissues. LMW-E overexpression predicts poor survival in breast cancer patients independent of tumor proliferation rate, but the oncogenic mechanism of LMW-E and its unique function(s) independent of full-length cyclin E (FL-cycE) remain unclear. In the current study, we found LMW-E was associated with genomic instability in early-stage breast tumors (n = 725) and promoted genomic instability in human mammary epithelial cells (hMECs). Mechanistically, FL-cycE overexpression inhibited the proliferation of hMECs by replication stress and DNA damage accumulation, but LMW-E facilitated replication stress tolerance by upregulating DNA replication and damage repair. Specifically, LMW-E interacted with chromatin and upregulated the loading of minichromosome maintenance complex proteins (MCMs) in a CDC6 dependent manner and promoted DNA repair in a RAD51- and C17orf53-dependent manner. Targeting the ATR-CHK1-RAD51 pathway with ATR inhibitor (ceralasertib), CHK1 inhibitor (rabusertib), or RAD51 inhibitor (B02) significantly decreased the viability of LMW-E-overexpressing hMECs and breast cancer cells. Collectively, our findings delineate a novel role for LMW-E in tumorigenesis mediated by replication stress tolerance and genomic instability, providing novel therapeutic strategies for LMW-E-overexpressing breast cancers.
Collapse
|
5
|
He X, Yao Q, Fan D, You Y, Lian W, Zhou Z, Duan L. Combination of levofloxacin and cisplatin enhances anticancer efficacy via co-regulation of eight cancer-associated genes. Discov Oncol 2022; 13:76. [PMID: 35984577 PMCID: PMC9391551 DOI: 10.1007/s12672-022-00541-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Accepted: 07/15/2022] [Indexed: 04/17/2023] Open
Abstract
Chemosensitizer or combined chemotherapy can sensitize cancer cells to therapy and minimize drug resistance. We reveal that levofloxacin has broad-spectrum anticancer activity. Here we report that combination of levofloxacin and cisplatin further enhanced cytotoxicity in cancer cells by further promotion of apoptosis. Levofloxacin concentration-dependently promoted the inhibition of clone formation in cancer cells treated by cisplatin, and their combination further suppressed the tumor growth in mice. Levofloxacin and cisplatin co-regulated genes in directions supporting the enhancement of anticancer efficacy, of which, THBS1, TNFAIP3, LAPTM5, PI3 and IL24 were further upregulated, NCOA5, SRSF6 and SFPQ were further downregulated. Out of the 24 apoptotic pathways significantly enriched in the combination group, TNFAIP3, THBS1, SRSF6 and SFPQ overlapped in 14, 13, 3 and 1 pathway respectively. Jak-STAT/Cytokine-cytokine receptor interaction pathway network and extrinsic apoptotic signaling pathway were significantly enriched in levofloxacin group, cisplatin group and combination group. Jak-STAT/Cytokine-cytokine receptor interaction/Focal adhesion/EMC-receptor interaction pathway network was significantly enriched in the combination group, and IL24 and THBS1 were the overlapped genes. In conclusion, enhancement of anticancer efficacy in combination group was associated with the further regulation of THBS1, TNFAIP3, LAPTM5, PI3, IL24 and NCOA5, SFPQ, SRSF6. Targeting of Jak-STAT/Cytokine-cytokine receptor interaction/Focal adhesion/EMC-receptor interaction pathway network was correlated to the enhancement. With additional benefit to cancer patients for treatment or prophylaxis of an infectious syndrome, levofloxacin can benefit cancer chemotherapy no matter it is used independently or used with other chemotherapeutic drugs.
Collapse
Affiliation(s)
- Xiaoqiong He
- School of Public Health, Kunming Medical University, Kunming, 650500, Yunnan Province, People's Republic of China.
| | - Qian Yao
- Institute of Yunnan Tumor, The Third Affiliated Hospital of Kunming Medical University, Kunming, 650118, Yunnan Province, People's Republic of China
| | - Dan Fan
- School of Public Health, Kunming Medical University, Kunming, 650500, Yunnan Province, People's Republic of China
| | - Yutong You
- School of Public Health, Kunming Medical University, Kunming, 650500, Yunnan Province, People's Republic of China
| | - Wenjing Lian
- School of Public Health, Kunming Medical University, Kunming, 650500, Yunnan Province, People's Republic of China
| | - Zhangping Zhou
- School of Public Health, Kunming Medical University, Kunming, 650500, Yunnan Province, People's Republic of China
| | - Ling Duan
- School of Public Health, Kunming Medical University, Kunming, 650500, Yunnan Province, People's Republic of China
| |
Collapse
|
6
|
Yin H, Lu H, Xiong Y, Ye L, Teng C, Cao X, Li S, Sun S, Liu W, Lv W, Xin H. Tumor-Associated Neutrophil Extracellular Traps Regulating Nanocarrier-Enhanced Inhibition of Malignant Tumor Growth and Distant Metastasis. ACS APPLIED MATERIALS & INTERFACES 2021; 13:59683-59694. [PMID: 34902970 DOI: 10.1021/acsami.1c18660] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Tumor-associated neutrophil extracellular traps (NETs) play a critical role in promoting tumor growth and assisting tumor metastasis. Herein, a smart nanocarrier (designated as mP-NPs-DNase/PTX) based on regulating tumor-associated NETs has been developed, which consists of a paclitaxel (PTX) prodrug nanoparticle core and a poly-l-lysine (PLL) conjugated with the matrix metalloproteinase 9 (MMP-9)-cleavable Tat-peptide-coupled deoxyribonuclease I (DNase I) shell. After accumulating at the site of the tumor tissue, the nanocarrier can release DNase I in response to MMP-9 to degrade the structure of NETs. Then, the remaining moiety can uptake the tumor cells via the mediation of exposed cell penetrating peptide, and the PTX prodrug nanoparticles will lyse in response to the high intracellular concentration of reduced glutathione to release PTX to exert a cytotoxic effect of tumor cells. Through in vitro and in vivo evaluations, it has been proven that mP-NPs-DNase/PTX could serve as potential NET-regulated nanocarrier for enhanced inhibition of malignant tumor growth and distant metastasis.
Collapse
Affiliation(s)
- Haoyuan Yin
- Department of Pharmaceutics, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
- Institute of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing 210042, China
| | - Hongdan Lu
- Department of Pharmaceutics, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Yaokun Xiong
- Department of Pharmaceutics, School of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang 330004, China
| | - Lu Ye
- Department of Pharmaceutics, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Chuanhui Teng
- Department of Pharmaceutics, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Xiang Cao
- Department of Pharmaceutics, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Shengnan Li
- Department of Pharmaceutics, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Shanbo Sun
- Department of Pharmaceutics, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Wentao Liu
- Department of Pharmacology, School of Basic Medicine, Nanjing Medical University, Nanjing 211166, China
| | - Wei Lv
- Department of Pharmacy, The Affiliated Jiangyin Hospital of Southeast University Medical College, Jiangyin 214400, China
| | - Hongliang Xin
- Department of Pharmaceutics, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| |
Collapse
|
7
|
Mittmann LA, Haring F, Schaubächer JB, Hennel R, Smiljanov B, Zuchtriegel G, Canis M, Gires O, Krombach F, Holdt L, Brandau S, Vogl T, Lauber K, Uhl B, Reichel CA. Uncoupled biological and chronological aging of neutrophils in cancer promotes tumor progression. J Immunother Cancer 2021; 9:jitc-2021-003495. [PMID: 34876407 PMCID: PMC8655594 DOI: 10.1136/jitc-2021-003495] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/04/2021] [Indexed: 01/13/2023] Open
Abstract
Background Beyond their fundamental role in homeostasis and host defense, neutrophilic granulocytes (neutrophils) are increasingly recognized to contribute to the pathogenesis of malignant tumors. Recently, aging of mature neutrophils in the systemic circulation has been identified to be critical for these immune cells to properly unfold their homeostatic and anti-infectious functional properties. The role of neutrophil aging in cancer remains largely obscure. Methods Employing advanced in vivo microscopy techniques in different animal models of cancer as well as utilizing pulse-labeling and cell transfer approaches, various ex vivo/in vitro assays, and human data, we sought to define the functional relevance of neutrophil aging in cancer. Results Here, we show that signals released during early tumor growth accelerate biological aging of circulating neutrophils, hence uncoupling biological from chronological aging of these immune cells. This facilitates the accumulation of highly reactive neutrophils in malignant lesions and endows them with potent protumorigenic functions, thus promoting tumor progression. Counteracting uncoupled biological aging of circulating neutrophils by blocking the chemokine receptor CXCR2 effectively suppressed tumor growth. Conclusions Our data uncover a self-sustaining mechanism of malignant neoplasms in fostering protumorigenic phenotypic and functional changes in circulating neutrophils. Interference with this aberrant process might therefore provide a novel, already pharmacologically targetable strategy for cancer immunotherapy.
Collapse
Affiliation(s)
- Laura A Mittmann
- Department of Otorhinolaryngology, LMU München, Munich, Germany.,Walter Brendel Centre of Experimental Medicine, LMU München, Munich, Germany
| | - Florian Haring
- Department of Otorhinolaryngology, LMU München, Munich, Germany.,Walter Brendel Centre of Experimental Medicine, LMU München, Munich, Germany
| | - Johanna B Schaubächer
- Department of Otorhinolaryngology, LMU München, Munich, Germany.,Walter Brendel Centre of Experimental Medicine, LMU München, Munich, Germany
| | - Roman Hennel
- Department of Radiotherapy and Radiation Oncology, LMU München, Munich, Germany
| | - Bojan Smiljanov
- Department of Otorhinolaryngology, LMU München, Munich, Germany.,Walter Brendel Centre of Experimental Medicine, LMU München, Munich, Germany
| | - Gabriele Zuchtriegel
- Department of Otorhinolaryngology, LMU München, Munich, Germany.,Walter Brendel Centre of Experimental Medicine, LMU München, Munich, Germany
| | - Martin Canis
- Department of Otorhinolaryngology, LMU München, Munich, Germany
| | - Olivier Gires
- Department of Otorhinolaryngology, LMU München, Munich, Germany
| | - Fritz Krombach
- Walter Brendel Centre of Experimental Medicine, LMU München, Munich, Germany
| | - Lesca Holdt
- Institute for Laboratory Medicine, LMU München, Munich, Germany
| | - Sven Brandau
- Department of Otorhinolaryngology, University Hospital Essen, Essen, Germany
| | - Thomas Vogl
- Institute for Immunology, University of Munster, Munster, Germany
| | - Kirsten Lauber
- Department of Radiotherapy and Radiation Oncology, LMU München, Munich, Germany
| | - Bernd Uhl
- Department of Otorhinolaryngology, LMU München, Munich, Germany.,Walter Brendel Centre of Experimental Medicine, LMU München, Munich, Germany
| | - Christoph A Reichel
- Department of Otorhinolaryngology, LMU München, Munich, Germany .,Walter Brendel Centre of Experimental Medicine, LMU München, Munich, Germany
| |
Collapse
|
8
|
Karakas C, Francis AM, Ha MJ, Wingate HF, Meena RA, Yi M, Rasaputra KS, Barrera AMG, Arun B, Do KA, Sahin A, Keyomarsi K, Hunt KK. Cytoplasmic Cyclin E Expression Predicts for Response to Neoadjuvant Chemotherapy in Breast Cancer. Ann Surg 2021; 274:e150-e159. [PMID: 31436549 PMCID: PMC7031042 DOI: 10.1097/sla.0000000000003551] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
BACKGROUND Pathologic complete response (pCR) has been shown to be associated with favorable outcomes in breast cancer. Predictors of pCR could be useful in guiding treatment decisions regarding neoadjuvant therapy. The objective of this study was to evaluate cyclin E as a predictor of response to neoadjuvant chemotherapy in breast cancer. METHODS Patients (n = 285) with stage II-III breast cancer were enrolled in a prospective study and received neoadjuvant chemotherapy with anthracyclines, taxanes, or combination of the two. Pretreatment biopsies from 190 patients and surgical specimens following chemotherapy from 192 patients were available for immunohistochemical analysis. Clinical and pathologic responses were recorded and associated with presence of tumor infiltrating lymphocytes, cyclin E, adipophilin, programmed cell death-ligand 1, and elastase staining and other patient, tumor and treatment characteristics. RESULTS The pCR rate was significantly lower in patients with cytoplasmic cyclin E staining compared with those who had no cyclin E expression (16.1% vs 38.9%, P = 0.0005). In multivariable logistic regression analysis, the odds of pCR for patients who had cytoplasmic negative tumors was 9.35 times (P value < 0.0001) that compared with patients with cytoplasmic positive tumors after adjusting for ER, PR, and HER2 status. Cytoplasmic cyclin E expression also predicts long-term outcome and is associated with reduced disease free, recurrence free, and overall survival rates, independent of increased pretreatment tumor infiltrating lymphocytes. CONCLUSIONS Cyclin E independently predicted response to neoadjuvant chemotherapy. Hence, its routine immunohistochemical analysis could be used clinically to identify those breast cancer patients expected to have a poor response to anthracycline/taxane-based chemotherapy.
Collapse
Affiliation(s)
- Cansu Karakas
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Ashleigh M Francis
- Department of Breast Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Min Jin Ha
- Department of Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Hannah F Wingate
- Department of Breast Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Richard A Meena
- Department of Breast Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Min Yi
- Department of Breast Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Komal S Rasaputra
- Department of Breast Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | | | - Banu Arun
- Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Kim-Anh Do
- Department of Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Aysegul Sahin
- Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Khandan Keyomarsi
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Kelly K Hunt
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
- Department of Breast Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| |
Collapse
|
9
|
Wang C, Liao Y, He W, Zhang H, Zuo D, Liu W, Yang Z, Qiu J, Yuan Y, Li K, Zhang Y, Wang Y, Shi Y, Qiu Y, Gao S, Yuan Y, Li B. Elafin promotes tumour metastasis and attenuates the anti-metastatic effects of erlotinib via binding to EGFR in hepatocellular carcinoma. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2021; 40:113. [PMID: 33771199 PMCID: PMC7995733 DOI: 10.1186/s13046-021-01904-y] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Accepted: 03/08/2021] [Indexed: 12/24/2022]
Abstract
Background Elafin is a serine protease inhibitor critical for host defence. We previously reported that Elafin was associated with the recurrence of early-stage hepatocellular carcinoma (HCC) after surgery. However, the exact role of Elafin in HCC remains obscure. Methods HCC tissue microarrays were used to investigate the correlation between Elafin expression and the prognosis of HCC patients. In vitro migration, invasion and wound healing assays and in vivo lung metastasis models were used to determine the role of Elafin in HCC metastasis. Mass spectrometry, co-immunoprecipitation, western blotting, and immunofluorescence staining assays were performed to uncover the mechanism of Elafin in HCC. Dual-luciferase reporter and chromatin immunoprecipitation assays were employed to observe the transcriptional regulation of Elafin. Results Elafin expression was frequently increased in HCC tissues compared to normal tissues, and high Elafin expression in HCC tissues was correlated with aggressive tumour phenotypes and a poor prognosis in HCC patients. Elafin dramatically enhanced the metastasis of HCC cells both in vitro and in vivo by interacting with EGFR and activating EGFR/AKT signalling. Moreover, Elafin attenuated the suppressive effects of erlotinib on HCC metastasis. Besides, Elafin was transcriptionally regulated by Sp1 in HCC cells. Clinically, Elafin expression was positively correlated with Sp1, Vimentin, and EGFR signalling in both our HCC tissue microarrays and TCGA database analysis. Conclusions Upregulation of Elafin by Sp1 enhanced HCC metastasis via EGFR/AKT pathway, and overexpression of Elafin attenuated the anti-metastatic effects of erlotinib, suggesting a valuable prognostic biomarker and therapeutic target for HCC. Supplementary Information The online version contains supplementary material available at 10.1186/s13046-021-01904-y.
Collapse
Affiliation(s)
- Chenwei Wang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, People's Republic of China.,Department of Liver Surgery, Sun Yat-sen University Cancer Center, 651 Dongfeng Road East, Guangzhou, 510060, People's Republic of China
| | - Yadi Liao
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, People's Republic of China
| | - Wei He
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, People's Republic of China.,Department of Liver Surgery, Sun Yat-sen University Cancer Center, 651 Dongfeng Road East, Guangzhou, 510060, People's Republic of China
| | - Hong Zhang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, People's Republic of China
| | - Dinglan Zuo
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, People's Republic of China
| | - Wenwu Liu
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, People's Republic of China.,Department of Liver Surgery, Sun Yat-sen University Cancer Center, 651 Dongfeng Road East, Guangzhou, 510060, People's Republic of China
| | - Zhiwen Yang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, People's Republic of China.,Department of Liver Surgery, Sun Yat-sen University Cancer Center, 651 Dongfeng Road East, Guangzhou, 510060, People's Republic of China
| | - Jiliang Qiu
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, People's Republic of China.,Department of Liver Surgery, Sun Yat-sen University Cancer Center, 651 Dongfeng Road East, Guangzhou, 510060, People's Republic of China
| | - Yichuan Yuan
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, People's Republic of China.,Department of Liver Surgery, Sun Yat-sen University Cancer Center, 651 Dongfeng Road East, Guangzhou, 510060, People's Republic of China
| | - Kai Li
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, People's Republic of China.,Department of Liver Surgery, Sun Yat-sen University Cancer Center, 651 Dongfeng Road East, Guangzhou, 510060, People's Republic of China
| | - Yuanping Zhang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, People's Republic of China.,Department of Liver Surgery, Sun Yat-sen University Cancer Center, 651 Dongfeng Road East, Guangzhou, 510060, People's Republic of China
| | - Yongjin Wang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, People's Republic of China.,Department of Liver Surgery, Sun Yat-sen University Cancer Center, 651 Dongfeng Road East, Guangzhou, 510060, People's Republic of China
| | - Yunxing Shi
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, People's Republic of China.,Department of Liver Surgery, Sun Yat-sen University Cancer Center, 651 Dongfeng Road East, Guangzhou, 510060, People's Republic of China
| | - Yuxiong Qiu
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, People's Republic of China.,Department of Liver Surgery, Sun Yat-sen University Cancer Center, 651 Dongfeng Road East, Guangzhou, 510060, People's Republic of China
| | - Song Gao
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, People's Republic of China
| | - Yunfei Yuan
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, People's Republic of China. .,Department of Liver Surgery, Sun Yat-sen University Cancer Center, 651 Dongfeng Road East, Guangzhou, 510060, People's Republic of China.
| | - Binkui Li
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, People's Republic of China. .,Department of Liver Surgery, Sun Yat-sen University Cancer Center, 651 Dongfeng Road East, Guangzhou, 510060, People's Republic of China.
| |
Collapse
|
10
|
Guo E, Wu C, Ming J, Zhang W, Zhang L, Hu G. The Clinical Significance of DNA Damage Repair Signatures in Clear Cell Renal Cell Carcinoma. Front Genet 2021; 11:593039. [PMID: 33488669 PMCID: PMC7820869 DOI: 10.3389/fgene.2020.593039] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Accepted: 12/04/2020] [Indexed: 12/16/2022] Open
Abstract
DNA damage repair plays an important role in cancer’s initiation and progression, and in therapeutic resistance. The prognostic potential of damage repair indicators was studied in the case of clear cell renal cell carcinoma (ccRCC). Gene expression profiles of the disease were downloaded from cancer genome databases and gene ontology was applied to the DNA repair-related genes. Twenty-six differentially expressed DNA repair genes were identified, and regression analysis was used to identify those with prognostic potential and to construct a risk model. The model accurately predicted patient outcomes and distinguished among patients with different expression levels of immune evasion genes. The data indicate that DNA repair genes can be valuable for predicting the progression of clear cell renal cell carcinoma and the clinical benefits of immunotherapy.
Collapse
Affiliation(s)
- Ergang Guo
- Department of Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei, Wuhan
| | - Cheng Wu
- Department of Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei, Wuhan
| | - Jun Ming
- Department of Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei, Wuhan
| | - Wei Zhang
- Department of Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei, Wuhan
| | - Linli Zhang
- Department of Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei, Wuhan
| | - Guoqing Hu
- Department of Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei, Wuhan
| |
Collapse
|
11
|
Longatto-Filho A, Fregnani JH, Mafra da Costa A, de Araujo-Souza PS, Scapulatempo-Neto C, Herbster S, Boccardo E, Termini L. Evaluation of Elafin Immunohistochemical Expression as Marker of Cervical Cancer Severity. Acta Cytol 2020; 65:165-174. [PMID: 33271565 DOI: 10.1159/000512010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Accepted: 09/29/2020] [Indexed: 12/23/2022]
Abstract
INTRODUCTION The main risk factor for the development of cervical cancer (CC) is persistent infection by human papillomavirus (HPV) oncogenic types. In order to persist, HPV exhibits a plethora of immune evasion mechanisms. PI3/Elafin (Peptidase Inhibitor 3) is an endogenous serine protease inhibitor involved in epithelial protection against pathogens. PI3/Elafin's role in CC is still poorly understood. MATERIALS AND METHODS In the present study, we addressed PI3/Elafin protein detection in 123 CC samples by immunohistochemistry and mRNA expression in several datasets available at Gene Expression Omnibus and The Cancer Genome Atlas platforms. RESULTS We observed that PI3/Elafin is consistently downregulated in CC samples when compared to normal tissue. Most of PI3/Elafin-positive samples exhibited this protein at the plasma membrane. Besides, high PI3/Elafin expression at the cellular membrane was more frequent in in situ stages I + II than in invasive cervical tumor stages III + IV. This indicates that PI3/Elafin expression is gradually lost during the CC progression. Of note, advanced stages of CC were more frequently associated with a more intense PI3/Elafin reaction in the nuclei and cytoplasm. CONCLUSION Our results suggest that PI3/Elafin levels and subcellular localization may be used as a biomarker for CC severity.
Collapse
Affiliation(s)
- Adhemar Longatto-Filho
- Laboratory of Medical Investigation (LIM) 14, Department of Pathology, School of Medicine, University of São Paulo, São Paulo, São Paulo, Brazil
- Life and Health Sciences Research Institute, School of Medicine, University of Minho, ICVS/3B's, Braga, Portugal
- Molecular Oncology Research Center, Barretos Cancer Hospital, Pio XII Foundation, Barretos, Brazil
| | | | - Allini Mafra da Costa
- Molecular Oncology Research Center, Barretos Cancer Hospital, Pio XII Foundation, Barretos, Brazil
- Cancer Surveillance Section, International Agency for Research on Cancer, Lyon, France
| | - Patricia Savio de Araujo-Souza
- Laboratory of Immunogenetics and Histocompatibility, Department of Genetics, Universidade Federal do Paraná, Curitiba, Brazil
| | - Cristovam Scapulatempo-Neto
- Molecular Oncology Research Center, Barretos Cancer Hospital, Pio XII Foundation, Barretos, Brazil
- Pathology and Molecular Diagnostics (GeneOne), DASA Laboratories, São Paulo, São Paulo, Brazil
| | - Suellen Herbster
- Department of Microbiology, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, São Paulo, Brazil
| | - Enrique Boccardo
- Department of Microbiology, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, São Paulo, Brazil
| | - Lara Termini
- Centro de Investigação Translacional em Oncologia, Instituto do Câncer do Estado de São Paulo, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, São Paulo, Brazil,
| |
Collapse
|
12
|
Wu L, Zhang XHF. Tumor-Associated Neutrophils and Macrophages-Heterogenous but Not Chaotic. Front Immunol 2020; 11:553967. [PMID: 33343560 PMCID: PMC7738476 DOI: 10.3389/fimmu.2020.553967] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 11/02/2020] [Indexed: 12/20/2022] Open
Abstract
Tumor-associated macrophages (TAMs) and tumor-associated neutrophils (TANs) have been extensively studied. Their pleotropic roles were observed in multiple steps of tumor progression and metastasis, and sometimes appeared to be inconsistent across different studies. In this review, we collectively discussed many lines of evidence supporting the mutual influence between cancer cells and TAMs/TANs. We focused on how direct interactions among these cells dictate co-evolution involving not only clonal competition of cancer cells, but also landscape shift of the entire tumor microenvironment (TME). This co-evolution may take distinct paths and contribute to the heterogeneity of cancer cells and immune cells across different tumors. A more in-depth understanding of the cancer-TAM/TAN co-evolution will shed light on the development of TME that mediates metastasis and therapeutic resistance.
Collapse
Affiliation(s)
- Ling Wu
- Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston, TX, United States
- Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston, TX, United States
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, United States
| | - Xiang H.-F. Zhang
- Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston, TX, United States
- Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston, TX, United States
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, United States
- McNair Medical Institute, Baylor College of Medicine, Houston, TX, United States
| |
Collapse
|
13
|
Jobichen C, Prabhakar MT, Loh SN, Sivaraman J. Structural Basis for the Inhibition Mechanism of Ecotin against Neutrophil Elastase by Targeting the Active Site and Secondary Binding Site. Biochemistry 2020; 59:2788-2795. [PMID: 32657577 DOI: 10.1021/acs.biochem.0c00493] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Human neutrophil elastase (hNE) is a serine protease that plays a major role in defending the bacterial infection. However, elevated expression of hNE is reported in lung and breast cancer, among others. Moreover, hNE is a target for the treatment of cardiopulmonary diseases. Ecotin (ET) is a serine protease inhibitor present in many Gram-negative bacteria, and it plays a physiological role in inhibiting host proteases, including hNE. Despite this known interaction, the structure of the hNE-ET complex has not been reported, and the mechanism of ecotin inhibition is not available. We determined the structure of the hNE-ET complex by molecular replacement method. The structure of the hNE-ET complex revealed the presence of six interface regions comprising 50s, 60s, and 80s loops, between the ET dimer and two independent hNE monomers, which explains the high affinity of ecotin for hNE (12 pM). Notably, we observed a secondary binding site of hNE located 24 Å from the primary binding site. Comparison of the closely related trypsin-ecotin complex with our hNE-ET complex shows movement of the backbone atoms of the 80s and 50s loops by 4.6 Å, suggesting the flexibility of these loops in inhibiting a range of proteases. Through a detailed structural analysis, we demonstrate the flexibility of the hNE subsites to dock various side chains concomitant with inhibition, indicating the broad specificity of hNE against various inhibitors. These findings will aid in the design of chimeric inhibitors that target both sites of hNE and in the development of therapeutics for controlling hNE-mediated pathogenesis.
Collapse
Affiliation(s)
- Chacko Jobichen
- Department of Biological Sciences, National University of Singapore, 14 Science Drive 4, Singapore 117543
| | | | - Su Ning Loh
- Department of Biological Sciences, National University of Singapore, 14 Science Drive 4, Singapore 117543
| | - J Sivaraman
- Department of Biological Sciences, National University of Singapore, 14 Science Drive 4, Singapore 117543
| |
Collapse
|
14
|
Wu L, Saxena S, Singh RK. Neutrophils in the Tumor Microenvironment. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2020; 1224:1-20. [PMID: 32036601 DOI: 10.1007/978-3-030-35723-8_1] [Citation(s) in RCA: 81] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Neutrophils are the first responders to inflammation, infection, and injury. As one of the most abundant leukocytes in the immune system, neutrophils play an essential role in cancer progression, through multiple mechanisms, including promoting angiogenesis, immunosuppression, and cancer metastasis. Recent studies demonstrating elevated neutrophil to lymphocyte ratios suggest neutrophil as a potential therapeutic target and biomarker for disease status in cancer. This chapter will discuss the phenotypic and functional changes in the neutrophil in the tumor microenvironment, the underlying mechanism(s) of neutrophil facilitated cancer metastasis, and clinical potential of neutrophils as a prognostic/diagnostic marker and therapeutic target.
Collapse
Affiliation(s)
- Lingyun Wu
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Sugandha Saxena
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Rakesh K Singh
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, NE, USA.
| |
Collapse
|
15
|
|
16
|
Tumor-Associated Neutrophils in Cancer: Going Pro. Cancers (Basel) 2019; 11:cancers11040564. [PMID: 31010242 PMCID: PMC6520693 DOI: 10.3390/cancers11040564] [Citation(s) in RCA: 221] [Impact Index Per Article: 44.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Revised: 04/09/2019] [Accepted: 04/17/2019] [Indexed: 02/07/2023] Open
Abstract
The progression of cancer is not only about the tumor cell itself, but also about other involved players including cancer cell recruited immune cells, their released pro-inflammatory factors, and the extracellular matrix. These players constitute the tumor microenvironment and play vital roles in the cancer progression. Neutrophils—the most abundant white blood cells in the circulation system—constitute a significant part of the tumor microenvironment. Neutrophils play major roles linking inflammation and cancer and are actively involved in progression and metastasis. Additionally, recent data suggest that neutrophils could be considered one of the emerging targets for multiple cancer types. This review summarizes the most recent updates regarding neutrophil recruitments and functions in the tumor microenvironment as well as potential development of neutrophils-targeted putative therapeutic strategies.
Collapse
|
17
|
Cxcr1 mediates recruitment of neutrophils and supports proliferation of tumor-initiating astrocytes in vivo. Sci Rep 2018; 8:13285. [PMID: 30185911 PMCID: PMC6125480 DOI: 10.1038/s41598-018-31675-0] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2018] [Accepted: 07/30/2018] [Indexed: 01/12/2023] Open
Abstract
Neutrophils are first-responders to sites of infection and tissue damage including the inflamed tumor microenvironment. Increasing evidence suggests that crosstalk between tumors and neutrophils can affect the progression of established tumors. However, there is a gap in our understanding of the early events that lead to neutrophil recruitment to oncogene-transformed cells and how these pathways alter tumor progression. Here, we use optically transparent zebrafish larvae to probe the early signals that mediate neutrophil recruitment to Kras-transformed astrocytes. We show that zebrafish larvae with impaired neutrophil function exhibit reduced proliferation of transformed astrocytes supporting a critical role for tumor-associated neutrophils in the early progression of tumorigenesis. Moreover, using mutants and pharmacological inhibition, we show that the chemokine receptor Cxcr1 promotes neutrophil recruitment, proliferation of tumor-initiating cells, and neoplastic mass formation. These findings highlight the power of the larval zebrafish system to image and probe early events in the tumor-initiating microenvironment and demonstrate the potential for neutrophil recruitment signaling pathways such as Cxcl8-Cxcr1 as targets for anti-cancer therapies.
Collapse
|
18
|
Chen Y, Huang L, Wang S, Liu T, Wu Y, Li JL, Li M. WAP four-disulfide core domain protein 2 promotes metastasis of human ovarian cancer by regulation of metastasis-associated genes. J Ovarian Res 2017; 10:40. [PMID: 28679402 PMCID: PMC5499000 DOI: 10.1186/s13048-017-0329-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Accepted: 04/24/2017] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND WAP four-disulfide core domain protein 2 (WFDC2) shows a tumor-restricted upregulated pattern of expression in ovarian cancer. METHODS In this study, we evaluated the role of WFCD2 in tumor mobility, invasion and metastasis of ovarian cancer in clinical tissue and in ovarian cancer cells, both in vitro and in vivo. RESULTS Our results revealed WFCD2 was overexpressed in ovarian tissues, and the expression level of WFCD2 was associated with metastasis and lymph node metastasis. Higher expression of WFCD2 was also observed in aggressive HO8910-PM cells than in HO8910 cells, and WFCD2 knockdown halted cell migration, invasion, tumorigenicity and metastasis in ovarian cancer cells, both in vitro and in vivo. Knockdown of WFDC2 induced the down-regulation of ICAM-1, CD44, and MMP2. CONCLUSION In summary, our work demonstrates that WFCD2 promotes metastasis in ovarian cancer. These findings suggest that WFCD2 plays a critical role in promoting metastasis and may constitute a potential therapeutic target of ovarian cancer.
Collapse
Affiliation(s)
- Yao Chen
- School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, 510515, China.,State Key Laboratory of Organ Failure, Guangdong Provincial Key Laboratory of Tropical Disease Research, Southern Medical University, Guangzhou, 510515, China.,Institute of Antibody Engineering, Southern Medical University, 1023 Shatainan Road, Guangzhou, 510515, China
| | - Liping Huang
- Obstetrics and Gynecology Center, Nanfang Hospital, Guangzhou, 510515, China
| | - Suihai Wang
- Institute of Antibody Engineering, Southern Medical University, 1023 Shatainan Road, Guangzhou, 510515, China
| | - Tiancai Liu
- Institute of Antibody Engineering, Southern Medical University, 1023 Shatainan Road, Guangzhou, 510515, China
| | - Yingsong Wu
- Institute of Antibody Engineering, Southern Medical University, 1023 Shatainan Road, Guangzhou, 510515, China.
| | - Ji-Liang Li
- Institute of Antibody Engineering, Southern Medical University, 1023 Shatainan Road, Guangzhou, 510515, China. .,Department of Oncology, Molecular Oncology Laboratories, Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, OX3 9DS, UK.
| | - Ming Li
- School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, 510515, China. .,State Key Laboratory of Organ Failure, Guangdong Provincial Key Laboratory of Tropical Disease Research, Southern Medical University, Guangzhou, 510515, China. .,Institute of Antibody Engineering, Southern Medical University, 1023 Shatainan Road, Guangzhou, 510515, China.
| |
Collapse
|
19
|
Caruso JA, Karakas C, Zhang J, Yi M, Albarracin C, Sahin A, Bondy M, Liu J, Hunt KK, Keyomarsi K. Elafin is downregulated during breast and ovarian tumorigenesis but its residual expression predicts recurrence. Breast Cancer Res 2015; 16:3417. [PMID: 25551582 PMCID: PMC4326485 DOI: 10.1186/s13058-014-0497-4] [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: 08/20/2014] [Indexed: 01/08/2023] Open
Abstract
INTRODUCTION Elafin is an endogenous serine protease inhibitor. The majority of breast cancer cell lines lack elafin expression compared to human mammary epithelial cells. In this study, we hypothesized that elafin is downregulated during breast and ovarian tumorigenesis. METHODS We examined elafin expression by immunohistochemistry (IHC) in specimens of normal breast tissue (n = 24), ductal carcinoma in situ (DCIS) (n = 54), and invasive breast cancer (n = 793). IHC analysis of elafin expression was also performed in normal fallopian tube tissue (n = 20), ovarian cystadenomas (n = 9), borderline ovarian tumors (n = 21), and invasive ovarian carcinomas (n = 216). To understand the significance of elafin in luminal breast cancer cell lines, wild-type or M25G elafin (lacking the protease inhibitory function) were exogenously expressed in MCF-7 and T47D cells. RESULTS Elafin expression was downregulated in 24% of DCIS and 83% of invasive breast tumors when compared to elafin expression in the normal mammary epithelium. However, the presence of elafin-positive cells in invasive breast tumors, even at low frequency, correlated with poor recurrence-free survival (RFS), reduced overall survival (OS), and clinicopathological markers of aggressive tumor behavior. Elafin-positive cells were an especially strong and independent prognostic marker of reduced RFS in IHC-defined luminal A-like tumors. Elafin was also downregulated in 33% of ovarian cystadenomas, 43% of borderline ovarian tumors, and 86% of invasive ovarian carcinomas when compared to elafin expression in the normal fallopian tube. In ovarian tumors, elafin-positive cells were correlated with reduced RFS, OS and disease-specific survival (DSS) only in stage I/II patients and not in stage III/IV patients. Notably, exogenous expression of elafin or elafin M25G in the luminal breast cancer cell lines MCF-7 and T47D significantly decreased cell proliferation in a protease inhibitory domain-independent manner. CONCLUSIONS Elafin predicts poor outcome in breast and ovarian cancer patients and delineates a subset of endocrine receptor-positive breast cancer patients susceptible to recurrence who could benefit from more aggressive intervention. Our in vitro results suggest that elafin arrests luminal breast cancer cells, perhaps suggesting a role in tumor dormancy.
Collapse
|
20
|
Caruso JA, Campana R, Wei C, Su CH, Hanks AM, Bornmann WG, Keyomarsi K. Indole-3-carbinol and its N-alkoxy derivatives preferentially target ERα-positive breast cancer cells. Cell Cycle 2015; 13:2587-99. [PMID: 25486199 DOI: 10.4161/15384101.2015.942210] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Indole-3-carbinol (I3C) is a natural anti-carcinogenic compound found at high concentrations in Brassica vegetables. I3C was recently reported to inhibit neutrophil elastase (NE) activity, while consequently limiting the proteolytic processing of full length cyclin E into pro-tumorigenic low molecular weight cyclin E (LMW-E). In this study, we hypothesized that inhibition of NE activity and resultant LMW-E generation is critical to the anti-tumor effects of I3C. LMW-E was predominately expressed by ERα-negative breast cancer cell lines. However, ERα-positive cell lines demonstrated the greatest sensitivity to the anti-tumor effects of I3C and its more potent N-alkoxy derivatives. We found that I3C was incapable of inhibiting NE activity or the generation of LMW-E. Therefore, this pathway did not contribute to the anti-tumor activity of I3C. Gene expression analyzes identified ligand-activated aryl hydrocarbon receptor (AhR), which mediated sensitivity to the anti-tumor effects of I3C in ERα-positive MCF-7 cells. In this model system, the reactive oxygen species (ROS)-induced upregulation of ATF-3 and pro-apoptotic BH3-only proteins (e.g. NOXA) contributed to the sensitivity of ERα-positive breast cancer cells to the anti-tumor effects of I3C. Overexpression of ERα in MDA-MB-231 cells, which normally lack ERα expression, increased sensitivity to the anti-tumor effects of I3C, demonstrating a direct role for ERα in mediating the sensitivity of breast cancer cell lines to I3C. Our results suggest that ERα signaling amplified the pro-apoptotic effect of I3C-induced AhR signaling in luminal breast cancer cell lines, which was mediated in part through oxidative stress induced upregulation of ATF-3 and downstream BH3-only proteins.
Collapse
Key Words
- AhR, aryl hydrocarbon receptor
- CYP, cytochrome p450 oxidases
- DIM, 3,3-diindoylmethane
- ERα, estrogen receptor α
- HMECs, human mammary epithelial cells
- I3C, indole-3-carbinol
- LMW-E, low molecular weight cyclin E
- NE, neutrophil elastase
- ROS, reactive oxygen species
- RPPA, reverse phase protein array
- TNBC, triple-receptor negative breast cancer
- aryl hydrocarbon receptor
- estrogen receptor α
- indole-3-carbinol
- neutrophil elastase
Collapse
Affiliation(s)
- Joseph A Caruso
- a Department of Experimental Radiation Oncology ; University of Texas MD Anderson Cancer Center ; Houston , TX USA
| | | | | | | | | | | | | |
Collapse
|
21
|
Labidi-Galy SI, Clauss A, Ng V, Duraisamy S, Elias KM, Piao HY, Bilal E, Davidowitz RA, Lu Y, Badalian-Very G, Györffy B, Kang UB, Ficarro SB, Ganesan S, Mills GB, Marto JA, Drapkin R. Elafin drives poor outcome in high-grade serous ovarian cancers and basal-like breast tumors. Oncogene 2015; 34:373-83. [PMID: 24469047 PMCID: PMC4112176 DOI: 10.1038/onc.2013.562] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2013] [Revised: 11/08/2013] [Accepted: 11/27/2013] [Indexed: 12/19/2022]
Abstract
High-grade serous ovarian carcinoma (HGSOC) and basal-like breast cancer (BLBC) share many features including TP53 mutations, genomic instability and poor prognosis. We recently reported that Elafin is overexpressed by HGSOC and is associated with poor overall survival. Here, we confirm that Elafin overexpression is associated with shorter survival in 1000 HGSOC patients. Elafin confers a proliferative advantage to tumor cells through the activation of the MAP kinase pathway. This mitogenic effect can be neutralized by RNA interference, specific antibodies and a MEK inhibitor. Elafin expression in patient-derived samples was also associated with chemoresistance and strongly correlates with bcl-xL expression. We extended these findings into the examination of 1100 primary breast tumors and six breast cancer cell lines. We observed that Elafin is overexpressed and secreted specifically by BLBC tumors and cell lines, leading to a similar mitogenic effect through activation of the MAP kinase pathway. Here too, Elafin overexpression is associated with poor overall survival, suggesting that it may serve as a biomarker and therapeutic target in this setting.
Collapse
Affiliation(s)
- S. Intidhar Labidi-Galy
- Dana-Farber Cancer Institute, Department of Medical Oncology, Boston, MA
- Harvard Medical School, Boston, MA
| | - Adam Clauss
- Dana-Farber Cancer Institute, Department of Medical Oncology, Boston, MA
- Harvard Medical School, Boston, MA
| | - Vivian Ng
- Dana-Farber Cancer Institute, Department of Medical Oncology, Boston, MA
| | - Sekhar Duraisamy
- Dana-Farber Cancer Institute, Department of Medical Oncology, Boston, MA
- Harvard Medical School, Boston, MA
| | - Kevin M. Elias
- Dana-Farber Cancer Institute, Department of Medical Oncology, Boston, MA
- Harvard Medical School, Boston, MA
- Brigham and Women’s Hospital, Division of Gynecologic Oncology, Boston, MA
| | - Hui-Ying Piao
- Dana-Farber Cancer Institute, Department of Medical Oncology, Boston, MA
| | - Erhan Bilal
- The Cancer Institute of New Jersey, Robert Wood Johnson Medical School-University of Medicine and Dentistry of New Jersey, New Brunswick, NJ
| | | | - Yiling Lu
- Department of Systems Biology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Gayane Badalian-Very
- Dana-Farber Cancer Institute, Department of Medical Oncology, Boston, MA
- Harvard Medical School, Boston, MA
| | - Balázs Györffy
- Research Laboratory of Pediatrics and Nephrology, Hungarian Academy of Sciences, Budapest, Hungary
| | - Un-Beom Kang
- Harvard Medical School, Boston, MA
- Dana-Farber Cancer Institute, Blais Proteomics Center, Boston, MA
| | - Scott B. Ficarro
- Harvard Medical School, Boston, MA
- Dana-Farber Cancer Institute, Blais Proteomics Center, Boston, MA
| | - Shridar Ganesan
- The Cancer Institute of New Jersey, Robert Wood Johnson Medical School-University of Medicine and Dentistry of New Jersey, New Brunswick, NJ
| | - Gordon B. Mills
- Department of Systems Biology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Jarrod A. Marto
- Harvard Medical School, Boston, MA
- Dana-Farber Cancer Institute, Blais Proteomics Center, Boston, MA
| | - Ronny Drapkin
- Dana-Farber Cancer Institute, Department of Medical Oncology, Boston, MA
- Harvard Medical School, Boston, MA
- Brigham and Women’s Hospital, Department of Pathology, Boston, MA
| |
Collapse
|
22
|
The serine protease inhibitor elafin maintains normal growth control by opposing the mitogenic effects of neutrophil elastase. Oncogene 2014; 34:3556-67. [PMID: 25195861 PMCID: PMC4362782 DOI: 10.1038/onc.2014.284] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2014] [Revised: 06/22/2014] [Accepted: 07/19/2014] [Indexed: 12/22/2022]
Abstract
The serine protease inhibitor, elafin, is a critical component of the epithelial barrier against neutrophil elastase (NE). Elafin is downregulated in the majority of breast cancer cell lines compared to normal human mammary epithelial cells (HMECs). Here, we evaluated the role of elafin and NE on proliferation and tumorigenesis. Elafin is induced in growth factor deprived HMECs as they enter a quiescent (G0) state, suggesting that elafin is a counterbalance against the mitogenic effects of NE in G0 HMECs. Stable knockdown of elafin compromises the ability of HMECs to maintain G0-arrest during long-term growth factor deprivation; this effect can be reversed by re-expression of wild-type elafin, but not elafin-M25G lacking protease inhibitory function. These results suggest that NE, which is largely contributed by activated neutrophils in the tumor microenvironment, may be negatively regulating the ability of elafin to arrest cells in G0. In fact when purified NE was added to elafin knockdown HMECs, these cells demonstrated greater sensitivity to the growth promoting effects of purified NE. Activation of ERK signaling, downstream of toll-like receptor 4, was essential to the mitogenic effect of NE on HMECs. These findings were next translated to patient samples, and immunohistochemical analysis of normal breast tissue revealed robust elafin expression in the mammary epithelium; however, elafin expression was dramatically downregulated in a significant proportion of human breast tumor specimens. The loss of elafin expression during breast cancer progression may promote tumor growth as a consequence of increased NE-activity. To address the role of NE in mammary tumorigenesis, we next examined if deregulated NE-activity enhances mammary tumor growth. NE knockout in the C3(1)TAg mouse model of mammary tumorigenesis suppressed proliferation and reduced the kinetics of tumor growth. Overall, the imbalance between NE and its inhibitors, such as elafin, presents an important therapeutic target in breast cancer.
Collapse
|
23
|
Marzoq AJ, Giese N, Hoheisel JD, Alhamdani MSS. Proteome variations in pancreatic stellate cells upon stimulation with proinflammatory factors. J Biol Chem 2013; 288:32517-32527. [PMID: 24089530 DOI: 10.1074/jbc.m113.488387] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Pancreatic stellate cells are key mediators in chronic pancreatitis and play a central role in the development of pancreatic fibrosis, stromal formation, and progression of pancreatic cancer. This study was aimed at investigating molecular changes at the level of the proteome that are associated with the activation of pancreatic stellate cells by proinflammatory factors, namely TNF-α, FGF2, IL6, and chemokine (C-C motif) ligand 4 (CCL4). They were added individually to cells growing in serum-free medium next to controls in medium supplemented with serum, thus containing a mixture of them all, or in serum-free medium alone. Variations were detected by means of a microarray of 810 antibodies targeting relevant proteins. All tested factors triggered increased proliferation and migration. Further analysis showed that TNF-α is the prime factor responsible for the activation of pancreatic stellate cells. CCL4 is associated with cellular neovascularization, whereas FGF2 and IL6 induction led to better cellular survival and decreased apoptotic activity of the stellate cells. The identified direct effects of individual cytokines on human pancreatic stellate cells provide new insights about their contribution to pancreatic cancer promotion.
Collapse
Affiliation(s)
- Aseel J Marzoq
- From the Division of Functional Genome Analysis, Deutsches Krebsforschungszentrum (DKFZ), Im Neuenheimer Feld 580, 69120 Heidelberg, Germany
| | - Nathalia Giese
- the Department of General, Visceral, and Transplantation Surgery, University Hospital Heidelberg, Im Neuenheimer Feld 110, 69120 Heidelberg, Germany
| | - Jörg D Hoheisel
- From the Division of Functional Genome Analysis, Deutsches Krebsforschungszentrum (DKFZ), Im Neuenheimer Feld 580, 69120 Heidelberg, Germany
| | - Mohamed Saiel Saeed Alhamdani
- From the Division of Functional Genome Analysis, Deutsches Krebsforschungszentrum (DKFZ), Im Neuenheimer Feld 580, 69120 Heidelberg, Germany.
| |
Collapse
|
24
|
Marzoq AJ, Giese N, Hoheisel JD, Alhamdani MSS. Proteome variations in pancreatic stellate cells upon stimulation with proinflammatory factors. J Biol Chem 2013. [PMID: 24089530 DOI: 10.074/jbc.m] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Pancreatic stellate cells are key mediators in chronic pancreatitis and play a central role in the development of pancreatic fibrosis, stromal formation, and progression of pancreatic cancer. This study was aimed at investigating molecular changes at the level of the proteome that are associated with the activation of pancreatic stellate cells by proinflammatory factors, namely TNF-α, FGF2, IL6, and chemokine (C-C motif) ligand 4 (CCL4). They were added individually to cells growing in serum-free medium next to controls in medium supplemented with serum, thus containing a mixture of them all, or in serum-free medium alone. Variations were detected by means of a microarray of 810 antibodies targeting relevant proteins. All tested factors triggered increased proliferation and migration. Further analysis showed that TNF-α is the prime factor responsible for the activation of pancreatic stellate cells. CCL4 is associated with cellular neovascularization, whereas FGF2 and IL6 induction led to better cellular survival and decreased apoptotic activity of the stellate cells. The identified direct effects of individual cytokines on human pancreatic stellate cells provide new insights about their contribution to pancreatic cancer promotion.
Collapse
Affiliation(s)
- Aseel J Marzoq
- From the Division of Functional Genome Analysis, Deutsches Krebsforschungszentrum (DKFZ), Im Neuenheimer Feld 580, 69120 Heidelberg, Germany
| | - Nathalia Giese
- the Department of General, Visceral, and Transplantation Surgery, University Hospital Heidelberg, Im Neuenheimer Feld 110, 69120 Heidelberg, Germany
| | - Jörg D Hoheisel
- From the Division of Functional Genome Analysis, Deutsches Krebsforschungszentrum (DKFZ), Im Neuenheimer Feld 580, 69120 Heidelberg, Germany
| | - Mohamed Saiel Saeed Alhamdani
- From the Division of Functional Genome Analysis, Deutsches Krebsforschungszentrum (DKFZ), Im Neuenheimer Feld 580, 69120 Heidelberg, Germany.
| |
Collapse
|
25
|
Hunt KK, Wingate H, Yokota T, Liu Y, Mills GB, Zhang F, Fang B, Su CH, Zhang M, Yi M, Keyomarsi K. Elafin, an inhibitor of elastase, is a prognostic indicator in breast cancer. Breast Cancer Res 2013; 15:R3. [PMID: 23320734 PMCID: PMC3672770 DOI: 10.1186/bcr3374] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2012] [Accepted: 01/03/2013] [Indexed: 12/23/2022] Open
Abstract
Introduction Elafin is an elastase-specific inhibitor with increased transcription in normal mammary epithelial cells compared to mammary carcinoma cells. In this report, we test the hypothesis that inhibition of elastase, through induction of elafin, leads to inhibition of human breast cancer cell viability and, therefore, predicts survival in breast cancer patients. Methods Panels of normal and immortalized breast epithelial cells, along with breast carcinoma cells, were used to examine the impact of adenoviral-mediated elafin expression or shRNA-mediated inhibition of elastase on the growth of cells and xenografts in nude mice. To determine the prognostic significance of decreased elafin in patients with invasive breast cancer, previously published gene array datasets were interrogated. Results Elafin expression had no effect on non-tumorigenic cells but resulted in marked inhibition of cell growth in breast cancer cell lines. Control-treated xenografts generated a tumor burden that necessitated sacrifice within one month of initial treatment, whereas xenograft-bearing mice treated with Ad-Elafin were alive at eight months with marked reduction in tumor growth. Elastase inhibition mimicked these results, showing decreased tumor cell growth in vitro and in vivo. Low expression of elafin gene correlated with significantly reduced time to relapse, and when combined with high expression of elastase gene was associated with decreased survival in breast cancer patients. Conclusion Our data suggest that elafin plays a direct role in the suppression of tumors through inhibition of elastase and thus serves as a prognostic indicator for breast cancer patients.
Collapse
|
26
|
Affiliation(s)
- Keith R Loeb
- Department of Laboratory Medicine, University of Washington School of Medicine, Seattle, Washington, United States of America.
| | | |
Collapse
|
27
|
Wei H, Hellström KE, Hellström I. Elafin selectively regulates the sensitivity of ovarian cancer cells to genotoxic drug-induced apoptosis. Gynecol Oncol 2012; 125:727-33. [PMID: 22430613 DOI: 10.1016/j.ygyno.2012.03.018] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2011] [Revised: 03/06/2012] [Accepted: 03/08/2012] [Indexed: 10/28/2022]
Abstract
OBJECTIVE Elafin has been reported to be abundantly expressed in human epithelial ovarian carcinoma (EOC), however, its functions are poorly understood. Here, we evaluated the role of elafin in modulating the sensitivity of human EOC cells to chemotherapeutic drugs. METHODS Elafin expression was determined by ELISA in 9 established human EOC cell lines. A lentivirus encoding elafin-specific shRNA was used to down-regulate elafin expression in OVCAR3 and OV433 cells, and a plasmid encoding elafin was used to ectopically express elafin in elafin-negative SKOV3 cells. Sensitivity to cisplatin and other genotoxic agents and to paclitaxel, an inhibitor of microtubule depolymerization, was examined in OVCAR3, OV433 and SKOV3 sublines. Cell viability was determined by the MTT assay, apoptosis by annexin V/7-AAD staining and caspase activation by fluorimetric assay. RESULTS Knockdown of the elafin gene decreases cisplatin IC50 by at least 2-folds in OVCAR3 and OVCAR433 cells (p<0.01) but does not affect paclitaxel IC50. The sensitivity to other genotoxic agents such as carboplatin, cyclophosphamide and 5-fluorouracil was also increased by silencing the expression of elafin. Apoptosis and caspase-3 activation were significantly augmented in cisplatin-treated OVCAR3 cells with silenced elafin. Overexpression of elafin in SKOV3 cells made them more resistant to cisplatin and decreased cisplatin-induced apoptosis and caspase activation (p<0.01). CONCLUSIONS Expression of elafin decreases the sensitivity of human EOC cells to several genotoxic agents, which may have an important implication in predicting the response of patients with EOC to chemotherapy in the clinic.
Collapse
Affiliation(s)
- Huafeng Wei
- Department of Pathology, Harborview Medical Center; University of Washington, Seattle, WA 98104, USA
| | | | | |
Collapse
|
28
|
Bucur O, Stancu AL, Khosravi-Far R, Almasan A. Analysis of apoptosis methods recently used in Cancer Research and Cell Death & Disease publications. Cell Death Dis 2012; 3:e263. [PMID: 22297295 PMCID: PMC3288344 DOI: 10.1038/cddis.2012.2] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|