1
|
Zhang WJ, Zhang LP, Lin SJ, Wang CY, Le YG. P2 purinergic receptors regulate the progression of colorectal cancer. Purinergic Signal 2023:10.1007/s11302-023-09983-6. [PMID: 38153612 DOI: 10.1007/s11302-023-09983-6] [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: 10/05/2023] [Accepted: 12/12/2023] [Indexed: 12/29/2023] Open
Abstract
More and more studies have revealed that P2 purinergic receptors play a key role in the progression of colorectal cancer (CRC). P2X and P2Y purinergic receptors can be used as promoters and regulators of CRC and play a dual role in the progression of CRC. CRC microenvironment is rich in ATP and its cleavage products (ADP, AMP, Ado), which act as activators of P2X and P2Y purinergic receptors. The activation of P2X and P2Y purinergic receptors regulates the progression of CRC mainly by regulating the function of immune cells and mediating different signal pathways. In this paper, we focus on the specific mechanisms and functional roles of P2X7, P2Y12, and P2Y2 receptors in the growth and progression of CRC. The antagonistic effects of these selective antagonists of P2X purinergic receptors on the growth, invasion, and metastasis of CRC were further discussed. Moreover, different studies have reported that P2X7 receptor can be used as an effective predictor of patients with CRC. All these indicate that P2 purinergic receptors are a key regulator of CRC. Therefore, antagonizing P2 purinergic receptors may be an innovative treatment for CRC.
Collapse
Affiliation(s)
- Wen-Jun Zhang
- Department of Rehabilitation Medicine, The Second Affiliated Hospital, Jiangxi Medical College, Nanchang City, 343000, Jiangxi Province, China
| | - Li-Peng Zhang
- Gastrointestinal Surgery, The Second Affiliated Hospital, Nanchang University, Nanchang City, 343000, Jiangxi Province, China
| | - Si-Jian Lin
- Department of Rehabilitation Medicine, The Second Affiliated Hospital, Jiangxi Medical College, Nanchang City, 343000, Jiangxi Province, China
| | - Cheng-Yi Wang
- Department of Rehabilitation Medicine, The Second Affiliated Hospital, Jiangxi Medical College, Nanchang City, 343000, Jiangxi Province, China
| | - Yi-Guan Le
- Gastrointestinal Surgery, The Second Affiliated Hospital, Nanchang University, Nanchang City, 343000, Jiangxi Province, China.
| |
Collapse
|
2
|
Effect of the pH on the Antibacterial Potential and Cytotoxicity of Different Plasma-Activated Liquids. Int J Mol Sci 2022; 23:ijms232213893. [PMID: 36430372 PMCID: PMC9693261 DOI: 10.3390/ijms232213893] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Revised: 11/06/2022] [Accepted: 11/08/2022] [Indexed: 11/16/2022] Open
Abstract
In this study, different plasma-activated liquids were evaluated for their antimicrobial effects against Escherichia coli, as well as for their cytotoxicity on mammalian cells. The PALs were prepared from distilled (DIS), deionized (DI), filtered (FIL), and tap (TAP) water. Additionally, 0.9% NaCl saline solution (SAL) was plasma-activated. These PALs were prepared using 5 L/min air gliding arc plasma jet for up to 60.0 min of exposure. Subsequently, the physicochemical properties, such as, the oxidation-reduction potential (ORP), the pH, the conductivity, and the total dissolved solids (TDS) were characterized by a water multiparameter. The PALs obtained showed a drastic decrease in the pH with increasing plasma exposure time, in contrast, the conductivity and TDS increased. In a general trend, the UV-vis analyses identified a higher production of the following reactive species of nitrogen and oxygen (RONS), HNO2, H2O2, NO3-, and NO2-. Except for the plasma-activated filtered water (PAW-FIL), where there was a change in the position of NO2- and NO3- at some pHs, The higher production of HNO2 and H2O2-reactive species was observed at a low pH. Finally, the standardized suspensions of Escherichia coli were exposed to PAL for up to 60.0 min. The plasma-activated deionized water (PAW-DI pH 2.5), plasma-activated distilled water (PAW-DIS pH 2.5 and 3), and plasma-activated tap water (PAW-TAP 3.5) showed the best antimicrobial effects at exposure times of 3.0, 10.0, and 30.0 min, respectively. The MTT analysis demonstrated low toxicity of all of the PAL samples. Our results indicate that the plasma activation of different liquids using the gliding arc system can generate specific physicochemical conditions that produce excellent antibacterial effects for E. coli with a safe application, thus bringing future contributions to creating new antimicrobial protocols.
Collapse
|
3
|
Honrado C, Salahi A, Adair SJ, Moore JH, Bauer TW, Swami NS. Automated biophysical classification of apoptotic pancreatic cancer cell subpopulations by using machine learning approaches with impedance cytometry. LAB ON A CHIP 2022; 22:3708-3720. [PMID: 35997278 PMCID: PMC9514012 DOI: 10.1039/d2lc00304j] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Unrestricted cell death can lead to an immunosuppressive tumor microenvironment, with dysregulated apoptotic signaling that causes resistance of pancreatic cancer cells to cytotoxic therapies. Hence, modulating cell death by distinguishing the progression of subpopulations under drug treatment from viable towards early apoptotic, late apoptotic, and necrotic states is of interest. While flow cytometry after fluorescent staining can monitor apoptosis with single-cell sensitivity, the background of non-viable cells within non-immortalized pancreatic tumors from xenografts can confound distinction of the intensity of each apoptotic state. Based on single-cell impedance cytometry of drug-treated pancreatic cancer cells that are obtained from tumor xenografts with differing levels of gemcitabine sensitivity, we identify the biophysical metrics that can distinguish and quantify cellular subpopulations at the early apoptotic versus late apoptotic and necrotic states, by using machine learning methods to train for the recognition of each phenotype. While supervised learning has previously been used for classification of datasets with known classes, our advancement is the utilization of optimal positive controls for each class, so that clustering by unsupervised learning and classification by supervised learning can occur on unknown datasets, without human interference or manual gating. In this manner, automated biophysical classification can be used to follow the progression of apoptotic states in each heterogeneous drug-treated sample, for developing drug treatments to modulate cancer cell death and advance longitudinal analysis to discern the emergence of drug resistant phenotypes.
Collapse
Affiliation(s)
- Carlos Honrado
- Electrical & Computer Engineering, University of Virginia, Charlottesville, USA.
| | - Armita Salahi
- Electrical & Computer Engineering, University of Virginia, Charlottesville, USA.
| | - Sara J Adair
- Surgery, School of Medicine, University of Virginia, Charlottesville, USA
| | - John H Moore
- Electrical & Computer Engineering, University of Virginia, Charlottesville, USA.
| | - Todd W Bauer
- Surgery, School of Medicine, University of Virginia, Charlottesville, USA
| | - Nathan S Swami
- Electrical & Computer Engineering, University of Virginia, Charlottesville, USA.
- Chemistry, University of Virginia, Charlottesville, USA
| |
Collapse
|
4
|
On the Biocompatibility and Teat Retention of In Situ Gelling Intramammary Formulations: Cattle Mastitis Prevention and Treatment. Pharmaceutics 2021; 13:pharmaceutics13101732. [PMID: 34684025 PMCID: PMC8539992 DOI: 10.3390/pharmaceutics13101732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 10/09/2021] [Accepted: 10/11/2021] [Indexed: 11/25/2022] Open
Abstract
Treatment and prevention of cattle mastitis remains a formidable challenge due to the anatomical and physiological constraints of the cow udder. In this study, we investigated polymeric excipients and solvents that can form, (when combined) novel, non-toxic and biocompatible in situ gelling formulations in the mammary gland of bovine cattle. We also report on a new approach to screen intramammary formulations using fresh excised cow teats. Fourteen hydrophilic polymers and six solvents were evaluated for in vitro cytotoxicity and biocompatibility towards cultured bovine mammary epithelial cells (MAC-T), microscopic and macroscopic examination upon contact with excised cow teats. No significant cytotoxicity (p > 0.05) was observed with polyethylene oxides, hydroxypropyl methylcellulose, carboxymethyl cellulose, sodium alginate and xanthan gum. Polycarbophil and carbopol polymers showed significantly higher cytotoxicity (p < 0.05). Concentration-dependent cytotoxicity was observed for glycerin, propylene glycol, polyethylene glycol 400, ethanol, N-methyl-2-pyrrolidone and 2-pyrrolidone, with the 2-pyrrolidone solvents showing higher cytotoxic effects (p < 0.05). In situ gelling formulations comprising hydroxypropyl methylcellulose or carboxymethyl cellulose and solvents in specific ratios were biocompatible at higher concentrations with MAC-T cells compared to alginates. All investigated formulations could undergo in situ sol-to-gel phase transformation, forming non-toxic gels with good biocompatibility in excised cow teats hence, showing potential for use as intramammary carriers for sustained drug delivery.
Collapse
|
5
|
Molnar TF, Drozgyik A. Narrative review of theoretical considerations regarding HITHOC between past and future. ANNALS OF TRANSLATIONAL MEDICINE 2021; 9:954. [PMID: 34350269 PMCID: PMC8263867 DOI: 10.21037/atm-20-5855] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Accepted: 02/26/2021] [Indexed: 01/10/2023]
Abstract
Hyppocrates constructed the medicines-surgery-energy triangle which includes all therapeutical modalities. Hyperthermic intraoperative chemotherapy (HITHOC) is a synergy-based single stage multimodality treatment encompassing the locoregional manifestation of the systemic malignant process. Pleural space, thermal effect, lavage/irrigation and chemotherapy represent the basic science ports of the network hub: HITHOC. The malignant transformation and process of the pleural surface (and underlying lung) challenges space management and tissue control. Thermotherapy without local chemotherapy is insufficient, similar to the normothermic local irrigation aligned with anticancer agents. The local administration of combined heat-transfer fluid and chemotherapy with or without subsequent surgical removal offers reasonable outcome in extensive primary pleural neoplasms (malignant mesothelioma), advanced (> Stage IIIA) NSCLC, functionally inoperable lung cancer and pleural carcinosis from extrathoracic malignancies. Measured by symptom-free survival and the quality of life, HITHOC in its present form, offers a modest yet fully substantiated solution. HITHOC in combination with the local application of targeted therapy and/or immunotherapy administered in the pleural space are currently under investigation. Additional development including new acting substances, their solvents and the means regarding surgical delivery and anesthesiology techniques are sign posts up ahead. Level 2 evidence are required in order to stepping up the recommendation levels, rewriting protocols and guidelines, in which HITHOC earns its revered position in the decision making process it deserves.
Collapse
Affiliation(s)
- Tamas F Molnar
- Department of Operational Medicine, Faculty of Medicine, University of Pécs, Pécs, Hungary.,Chair of Surgery, Faculty of Medicine, University of Pécs/Dept Surgery, Aladar Petz University Teaching Hospital, Győr, Hungary
| | - Andras Drozgyik
- Chair of Surgery, Faculty of Medicine, University of Pécs/Dept Surgery, Aladar Petz University Teaching Hospital, Győr, Hungary
| |
Collapse
|
6
|
Bhartiya P, Mumtaz S, Lim JS, Kaushik N, Lamichhane P, Nguyen LN, Jang JH, Yoon SH, Choi JJ, Kaushik NK, Choi EH. Pulsed 3.5 GHz high power microwaves irradiation on physiological solution and their biological evaluation on human cell lines. Sci Rep 2021; 11:8475. [PMID: 33875781 PMCID: PMC8055702 DOI: 10.1038/s41598-021-88078-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Accepted: 04/07/2021] [Indexed: 02/02/2023] Open
Abstract
Microwave (MW) radiation is increasingly being used for several biological applications. Many investigations have focused on understanding the potential influences of pulsed MW irradiation on biological solutions. The current study aimed to investigate the effects of 3.5 GHz pulsed MW radiation-irradiated liquid solutions on the survival of human cancer and normal cells. Different physiological solutions such as phosphate buffer saline, deionized water, and Dulbecco's modified Eagle medium (DMEM) for cell culture growth were irradiated with pulsed MW radiation (45 shots with the energy of 1 mJ/shot). We then evaluated physiological effects such as cell viability, metabolic activity, mitochondrial membrane potential, cell cycle, and cell death in cells treated with MW-irradiated biological solutions. As MW irradiation with power density ~ 12 kW/cm2 mainly induces reactive nitrogen oxygen species in deionized water, it altered the cell cycle, membrane potential, and cell death rates in U373MG cells due to its high electric field ~ 11 kV/cm in water. Interestingly, MW-irradiated cell culture medium and phosphate-buffered saline did not alter the cellular viability and metabolic energy of cancer and normal cells without affecting the expression of genes responsible for cell death. Taken together, MW-irradiated water can alter cellular physiology noticeably, whereas irradiated media and buffered saline solutions induce negligible or irrelevant changes that do not affect cellular health.
Collapse
Affiliation(s)
- Pradeep Bhartiya
- Plasma Bioscience Research Center/Applied Plasma Medicine Center, Department of Plasma Bio Display, Department of Electrical and Biological Physics, Kwangwoon University, Seoul, 01897, Korea
| | - Sohail Mumtaz
- Plasma Bioscience Research Center/Applied Plasma Medicine Center, Department of Plasma Bio Display, Department of Electrical and Biological Physics, Kwangwoon University, Seoul, 01897, Korea
| | - Jun Sup Lim
- Plasma Bioscience Research Center/Applied Plasma Medicine Center, Department of Plasma Bio Display, Department of Electrical and Biological Physics, Kwangwoon University, Seoul, 01897, Korea
| | - Neha Kaushik
- College of Engineering, Department of Biotechnology, University of Suwon, Hwaseong, 18323, Korea
| | - Pradeep Lamichhane
- Plasma Bioscience Research Center/Applied Plasma Medicine Center, Department of Plasma Bio Display, Department of Electrical and Biological Physics, Kwangwoon University, Seoul, 01897, Korea
| | - Linh Nhat Nguyen
- Plasma Bioscience Research Center/Applied Plasma Medicine Center, Department of Plasma Bio Display, Department of Electrical and Biological Physics, Kwangwoon University, Seoul, 01897, Korea
| | - Jung Hyun Jang
- Plasma Bioscience Research Center/Applied Plasma Medicine Center, Department of Plasma Bio Display, Department of Electrical and Biological Physics, Kwangwoon University, Seoul, 01897, Korea
| | - Sang Ho Yoon
- Plasma Bioscience Research Center/Applied Plasma Medicine Center, Department of Plasma Bio Display, Department of Electrical and Biological Physics, Kwangwoon University, Seoul, 01897, Korea
| | - Jin Joo Choi
- Plasma Bioscience Research Center/Applied Plasma Medicine Center, Department of Plasma Bio Display, Department of Electrical and Biological Physics, Kwangwoon University, Seoul, 01897, Korea
| | - Nagendra Kumar Kaushik
- Plasma Bioscience Research Center/Applied Plasma Medicine Center, Department of Plasma Bio Display, Department of Electrical and Biological Physics, Kwangwoon University, Seoul, 01897, Korea.
| | - Eun Ha Choi
- Plasma Bioscience Research Center/Applied Plasma Medicine Center, Department of Plasma Bio Display, Department of Electrical and Biological Physics, Kwangwoon University, Seoul, 01897, Korea.
| |
Collapse
|
7
|
Li Y, Su Z, Zhao W, Zhang X, Momin N, Zhang C, Wittrup KD, Dong Y, Irvine DJ, Weiss R. Multifunctional oncolytic nanoparticles deliver self-replicating IL-12 RNA to eliminate established tumors and prime systemic immunity. ACTA ACUST UNITED AC 2020; 1:882-893. [PMID: 34447945 DOI: 10.1038/s43018-020-0095-6] [Citation(s) in RCA: 127] [Impact Index Per Article: 31.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Therapies that synergistically stimulate immunogenic cancer cell death (ICD), inflammation, and immune priming are of great interest for cancer immunotherapy. However, even multi-agent therapies often fail to trigger all of the steps necessary for self-sustaining anti-tumor immunity. Here we describe self-replicating RNAs encapsulated in lipid nanoparticles (LNP-replicons), which combine three key elements: (1) an LNP composition that potently promotes ICD, (2) RNA that stimulates danger sensors in transfected cells, and (3) RNA-encoded IL-12 for modulation of immune cells. Intratumoral administration of LNP-replicons led to high-level expression of IL-12, stimulation of a type I interferon response, and cancer cell ICD, resulting in a highly inflamed tumor microenvironment and priming of systemic anti-tumor immunity. In several mouse models of cancer, a single intratumoral injection of replicon-LNPs eradicated large established tumors, induced protective immune memory, and enabled regression of distal uninjected tumors. LNP-replicons are thus a promising multifunctional single-agent immunotherapeutic.
Collapse
Affiliation(s)
- Yingzhong Li
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA.,Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - Zhijun Su
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - Weiyu Zhao
- Division of Pharmaceutics and Pharmacology, College of Pharmacy, The Ohio State University, Columbus, Ohio, USA
| | - Xinfu Zhang
- Division of Pharmaceutics and Pharmacology, College of Pharmacy, The Ohio State University, Columbus, Ohio, USA
| | - Noor Momin
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA.,Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - Chengxiang Zhang
- Division of Pharmaceutics and Pharmacology, College of Pharmacy, The Ohio State University, Columbus, Ohio, USA
| | - K Dane Wittrup
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA.,Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA.,Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - Yizhou Dong
- Division of Pharmaceutics and Pharmacology, College of Pharmacy, The Ohio State University, Columbus, Ohio, USA
| | - Darrell J Irvine
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA.,Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA.,Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA.,Ragon Institute of Massachusetts General Hospital, Massachusetts Institute of Technology and Harvard University, Cambridge, Massachusetts, USA.,Howard Hughes Medical Institute, Chevy Chase, Maryland, USA
| | - Ron Weiss
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA.,Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| |
Collapse
|
8
|
Abstract
Ca2+ is a ubiquitous and dynamic second messenger molecule that is induced by many factors including receptor activation, environmental factors, and voltage, leading to pleiotropic effects on cell function including changes in migration, metabolism and transcription. As such, it is not surprising that aberrant regulation of Ca2+ signals can lead to pathological phenotypes, including cancer progression. However, given the highly context-specific nature of Ca2+-dependent changes in cell function, delineation of its role in cancer has been a challenge. Herein, we discuss the distinct roles of Ca2+ signaling within and between each type of cancer, including consideration of the potential of therapeutic strategies targeting these signaling pathways.
Collapse
Affiliation(s)
- Scott Gross
- Fels Institute for Cancer Research and Molecular Biology, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States
| | - Pranava Mallu
- Fels Institute for Cancer Research and Molecular Biology, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States
| | - Hinal Joshi
- Fels Institute for Cancer Research and Molecular Biology, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States
| | - Bryant Schultz
- Fels Institute for Cancer Research and Molecular Biology, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States
| | - Christina Go
- Fels Institute for Cancer Research and Molecular Biology, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States
| | - Jonathan Soboloff
- Fels Institute for Cancer Research and Molecular Biology, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States; Department of Medical Genetics & Molecular Biochemistry, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States.
| |
Collapse
|
9
|
Tong Z, Rajeev G, Guo K, Ivask A, McCormick S, Lombi E, Priest C, Voelcker NH. Microfluidic Cell Microarray Platform for High Throughput Analysis of Particle–Cell Interactions. Anal Chem 2018; 90:4338-4347. [DOI: 10.1021/acs.analchem.7b03079] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Ziqiu Tong
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, Victoria 3052, Australia
- Future Industries Institute, University of South Australia, Mawson Lakes, South Australia 5095, Australia
| | - Gayathri Rajeev
- Future Industries Institute, University of South Australia, Mawson Lakes, South Australia 5095, Australia
| | - Keying Guo
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, Victoria 3052, Australia
- Future Industries Institute, University of South Australia, Mawson Lakes, South Australia 5095, Australia
| | - Angela Ivask
- Future Industries Institute, University of South Australia, Mawson Lakes, South Australia 5095, Australia
| | - Scott McCormick
- Future Industries Institute, University of South Australia, Mawson Lakes, South Australia 5095, Australia
| | - Enzo Lombi
- Future Industries Institute, University of South Australia, Mawson Lakes, South Australia 5095, Australia
| | - Craig Priest
- Future Industries Institute, University of South Australia, Mawson Lakes, South Australia 5095, Australia
| | - Nicolas H. Voelcker
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, Victoria 3052, Australia
- Future Industries Institute, University of South Australia, Mawson Lakes, South Australia 5095, Australia
- Commonwealth Scientific and Industrial Research Organisation (CSIRO), Clayton, Victoria 3168, Australia
- Melbourne Centre for Nanofabrication, Victorian Node of the Australian National Fabrication Facility, Clayton, Victoria 3168, Australia
- Monash Institute of Medical Engineering, Monash University, Clayton, Victoria 3168, Australia
| |
Collapse
|
10
|
Tong Z, Ivask A, Guo K, McCormick S, Lombi E, Priest C, Voelcker NH. Crossed flow microfluidics for high throughput screening of bioactive chemical-cell interactions. LAB ON A CHIP 2017; 17:501-510. [PMID: 28074962 DOI: 10.1039/c6lc01261b] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
This paper describes the use of crossed laminar flow microfluidics for the selective capture of multiple cell types on-chip aiming for high throughput screening of various cell treatment compounds. Parallel laminar streams containing different cell types were perfused and captured on a cell adhesion protein-functionalized reaction area. Thereafter, parallel streams containing cell treatment solutions were delivered orthogonally over the captured cells. Multiple cell types and a range of cell treatment conditions could therefore be assessed in a single experiment. We were also able to sort mixed cell populations via antibody array clusters, and to further deliver treatments to subpopulations of cells. Moreover, using solutions with different tonicities, we successfully demonstrated the incorporation of a live/dead cell viability assessment on-chip for a direct read out assay following the treatments. This crossed laminar flow microfluidics for generation of a cell-based assay could therefore offer an interesting platform for high throughput screening of potential drug candidates, nanoparticle toxicity testing, or other cellular and molecular interventions.
Collapse
Affiliation(s)
- Ziqiu Tong
- Future Industry Institute, University of South Australia, Mawson Lakes, SA 5095, Australia.
| | - Angela Ivask
- Future Industry Institute, University of South Australia, Mawson Lakes, SA 5095, Australia.
| | - Keying Guo
- Future Industry Institute, University of South Australia, Mawson Lakes, SA 5095, Australia.
| | - Scott McCormick
- Future Industry Institute, University of South Australia, Mawson Lakes, SA 5095, Australia.
| | - Enzo Lombi
- Future Industry Institute, University of South Australia, Mawson Lakes, SA 5095, Australia.
| | - Craig Priest
- Future Industry Institute, University of South Australia, Mawson Lakes, SA 5095, Australia.
| | - Nicolas H Voelcker
- Future Industry Institute, University of South Australia, Mawson Lakes, SA 5095, Australia.
| |
Collapse
|
11
|
Bu J, Cho YH, Han SW. Enhancement of isolation sensitivity for the viable heterogeneous circulating tumor cells swelled by hypo-osmotic pressure. RSC Adv 2017. [DOI: 10.1039/c7ra09212a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
We have applied a hypo-osmotic gradient for enhancing the isolation of viable heterogeneous circulating tumor cells.
Collapse
Affiliation(s)
- Jiyoon Bu
- Cell Bench Research Center
- Korea Advanced Institute of Science and Technology (KAIST)
- Daejeon 34141
- Republic of Korea
| | - Young-Ho Cho
- Cell Bench Research Center
- Korea Advanced Institute of Science and Technology (KAIST)
- Daejeon 34141
- Republic of Korea
| | - Sae-Won Han
- Department of Internal Medicine
- Seoul National University Hospital
- Seoul
- Republic of Korea
| |
Collapse
|
12
|
Xu H, He L, Liu C, Tang L, Xu Y, Xiong M, Yang M, Fan Y, Hu F, Liu X, Ding L, Gao Y, Xu C, Li G, Liu S, Wu B, Zou L, Liang S. LncRNA NONRATT021972 siRNA attenuates P2X7 receptor expression and inflammatory cytokine production induced by combined high glucose and free fatty acids in PC12 cells. Purinergic Signal 2016; 12:259-68. [PMID: 26865268 DOI: 10.1007/s11302-016-9500-0] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2015] [Accepted: 02/03/2016] [Indexed: 02/07/2023] Open
Abstract
Diabetic neuropathy (DNP) is a frequent chronic complication of diabetes mellitus with potentially life-threatening outcomes. High glucose and elevated free fatty acids (FFAs) have been recently recognized as major causes of nervous system damage in diabetes. Our previous study has indicated extracellular stimuli, such as high glucose and/or FFA stress, may activate the p38 mitogen-activated protein kinase (MAPK) signaling pathway and induce a p38 MAPK-dependent sensitization of the P2X7 receptor and release of inflammatory factors in PC12 cells, while the mechanisms underlying remain to be elucidated. Long noncoding RNAs (lncRNAs) play important roles in diverse biological processes, including activation of a series of pathway signalings. Here, we showed combined high D-glucose and FFAs (HGHF) induced an increment of lncRNA-NONRATT021972 (NONCODE ID, nc021972) in PC12 cells. Nc021972 small interference RNA (siRNA) alleviated HGHF-induced activation of p38 MAPK, expression of the P2X7 receptor, and [Ca(2+)]i increment upon P2X7 receptor activation. Further experiments showed that there existed a crosstalk between nc021972 and the p38 MAPK signaling pathway. Inhibition of p38 MAPK signaling decreased nc021972-induced expression of the P2X7 receptor and [Ca(2+)]i increment upon P2X7 receptor activation. Also, nc021972 siRNA inhibited HGHF-induced PC12 release of TNF-α and IL-6 and rescued decreased cell viability mediated by the P2X7 receptor. Therefore, inhibition of nc021972 may serve as a novel therapeutic strategy for diabetes complicated with nervous inflammatory diseases.
Collapse
Affiliation(s)
- Hong Xu
- Department of Physiology, Medical College of Nanchang University, Nanchang, Jiangxi, 330006, People's Republic of China
| | - Luling He
- Department of Physiology, Medical College of Nanchang University, Nanchang, Jiangxi, 330006, People's Republic of China
| | - Changle Liu
- Department of Physiology, Medical College of Nanchang University, Nanchang, Jiangxi, 330006, People's Republic of China
| | - Lan Tang
- Department of Physiology, Medical College of Nanchang University, Nanchang, Jiangxi, 330006, People's Republic of China
| | - Yonghu Xu
- Department of Physiology, Medical College of Nanchang University, Nanchang, Jiangxi, 330006, People's Republic of China
| | - Mengqi Xiong
- Department of Physiology, Medical College of Nanchang University, Nanchang, Jiangxi, 330006, People's Republic of China
| | - Mei Yang
- Department of Physiology, Medical College of Nanchang University, Nanchang, Jiangxi, 330006, People's Republic of China
| | - Yongfang Fan
- Department of Physiology, Medical College of Nanchang University, Nanchang, Jiangxi, 330006, People's Republic of China
| | - Fangfang Hu
- Department of Physiology, Medical College of Nanchang University, Nanchang, Jiangxi, 330006, People's Republic of China
| | - Xingzi Liu
- Department of Physiology, Medical College of Nanchang University, Nanchang, Jiangxi, 330006, People's Republic of China
| | - Lu Ding
- Department of Physiology, Medical College of Nanchang University, Nanchang, Jiangxi, 330006, People's Republic of China
| | - Yun Gao
- Department of Physiology, Medical College of Nanchang University, Nanchang, Jiangxi, 330006, People's Republic of China
| | - Changshui Xu
- Department of Physiology, Medical College of Nanchang University, Nanchang, Jiangxi, 330006, People's Republic of China
| | - Guilin Li
- Department of Physiology, Medical College of Nanchang University, Nanchang, Jiangxi, 330006, People's Republic of China
| | - Shuangmei Liu
- Department of Physiology, Medical College of Nanchang University, Nanchang, Jiangxi, 330006, People's Republic of China
| | - Bing Wu
- Department of Physiology, Medical College of Nanchang University, Nanchang, Jiangxi, 330006, People's Republic of China
| | - Lifang Zou
- Department of Physiology, Medical College of Nanchang University, Nanchang, Jiangxi, 330006, People's Republic of China
| | - Shangdong Liang
- Department of Physiology, Medical College of Nanchang University, Nanchang, Jiangxi, 330006, People's Republic of China.
| |
Collapse
|
13
|
Xue H, Lu J, Yuan R, Liu J, Liu Y, Wu K, Wu J, Du J, Shen B. Knockdown of CLIC4 enhances ATP-induced HN4 cell apoptosis through mitochondrial and endoplasmic reticulum pathways. Cell Biosci 2016; 6:5. [PMID: 26816615 PMCID: PMC4727302 DOI: 10.1186/s13578-016-0070-1] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2015] [Accepted: 01/11/2016] [Indexed: 02/06/2023] Open
Abstract
Background Human head and neck squamous carcinoma is the 6th most prevalent carcinoma worldwide. Although many novel therapies have been developed, the clinical treatment for patients remains non-ideal. Chloride intracellular channel 4 (CLIC4), one of the seven members of the CLIC family, is a newly found Cl− channel that participates in various biological processes, including cellular apoptosis and differentiation. Accumulating evidence has revealed the significant role of CLIC4 in regulating the apoptosis of different cancer cells. Here, we investigated the functional role of CLIC4 in the apoptosis of HN4 cells, a human head and neck squamous carcinoma cell line. Results In the present study, we used immunohistochemical staining to demonstrate that the expression level of CLIC4 is elevated in the tissue of human oral squamous carcinoma compared with healthy human gingival tissue. Specific CLIC4 small interfering RNA was used to knockdown the expression of CLIC4. The results showed that knockdown of CLIC4 with or without 100 μM adenosine triphosphate (ATP) treatment significantly increased the expression of Bax, active caspase 3, active caspase 4 and CHOP but suppressed Bcl-2 expression in HN4 cells. Moreover, the results from the TdT-mediated dUTP nick end labeling assay indicated that CLIC4 knockdown induced a higher apoptotic rate in HN4 cells under the induction of ATP. In addition, knockdown of CLIC4 dramatically enhanced ATP-induced mitochondrial membrane depolarization in HN4 cells. Moreover, intracellular Ca2+ measurement revealed that Ca2+ release induced by ATP and thapsigargin, a Ca2+-ATPase inhibitor of the endoplasmic reticulum, was significantly enhanced by the suppression of CLIC4 in HN4 cells. Conclusions Knockdown of CLIC4 enhanced ATP-induced apoptosis in HN4 cells. Both the pathways of mitochondria and endoplasmic reticulum stress were involved in CLIC4-mediated cell apoptosis. Based on our finding, CLIC4 may be a potential and valuable target for the clinical treatment of head and neck squamous carcinoma. Electronic supplementary material The online version of this article (doi:10.1186/s13578-016-0070-1) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Haowei Xue
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, 230022 Anhui China
| | - Jinsen Lu
- Department of Physiology, Anhui Medical University, 81 Meishan Road, Hefei, 230032 Anhui China
| | - Renxiang Yuan
- Department of Physiology, Anhui Medical University, 81 Meishan Road, Hefei, 230032 Anhui China
| | - Jinli Liu
- Department of Dermatology, Anhui Provincial Hospital, Hefei, 230001 Anhui China
| | - Yehai Liu
- Department of Otorhinolaryngology, Head and Neck Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, 230022 Anhui China
| | - Kaile Wu
- Department of Otorhinolaryngology, Head and Neck Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, 230022 Anhui China
| | - Jing Wu
- Department of Otorhinolaryngology, Head and Neck Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, 230022 Anhui China
| | - Juan Du
- Department of Physiology, Anhui Medical University, 81 Meishan Road, Hefei, 230032 Anhui China
| | - Bing Shen
- Department of Physiology, Anhui Medical University, 81 Meishan Road, Hefei, 230032 Anhui China
| |
Collapse
|
14
|
Modulation of P2X4/P2X7/Pannexin-1 sensitivity to extracellular ATP via Ivermectin induces a non-apoptotic and inflammatory form of cancer cell death. Sci Rep 2015; 5:16222. [PMID: 26552848 PMCID: PMC4639773 DOI: 10.1038/srep16222] [Citation(s) in RCA: 118] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2015] [Accepted: 10/12/2015] [Indexed: 12/22/2022] Open
Abstract
Overexpression of P2X7 receptors correlates with tumor growth and metastasis. Yet, release of ATP is associated with immunogenic cancer cell death as well as inflammatory responses caused by necrotic cell death at sites of trauma or ischemia-reperfusion injury. Using an FDA-approved anti-parasitic agent Ivermectin as a prototype agent to allosterically modulate P2X4 receptors, we can switch the balance between the dual pro-survival and cytotoxic functions of purinergic signaling in breast cancer cells. This is mediated through augmented opening of the P2X4/P2X7-gated Pannexin-1 channels that drives a mixed apoptotic and necrotic mode of cell death associated with activation of caspase-1 and is consistent with pyroptosis. We show that cancer cell death is dependent on ATP release and death signals downstream of P2X7 receptors that can be reversed by inhibition of NADPH oxidases-generated ROS, Ca2+/Calmodulin-dependent protein kinase II (CaMKII) or mitochondrial permeability transition pore (MPTP). Ivermectin induces autophagy and release of ATP and HMGB1, key mediators of inflammation. Potentiated P2X4/P2X7 signaling can be further linked to the ATP rich tumor microenvironment providing a mechanistic explanation for the tumor selectivity of purinergic receptors modulation and its potential to be used as a platform for integrated cancer immunotherapy.
Collapse
|
15
|
Burnstock G, Di Virgilio F. Purinergic signalling and cancer. Purinergic Signal 2014; 9:491-540. [PMID: 23797685 DOI: 10.1007/s11302-013-9372-5] [Citation(s) in RCA: 234] [Impact Index Per Article: 23.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2013] [Accepted: 06/06/2013] [Indexed: 01/24/2023] Open
Abstract
Receptors for extracellular nucleotides are widely expressed by mammalian cells. They mediate a large array of responses ranging from growth stimulation to apoptosis, from chemotaxis to cell differentiation and from nociception to cytokine release, as well as neurotransmission. Pharma industry is involved in the development and clinical testing of drugs selectively targeting the different P1 nucleoside and P2 nucleotide receptor subtypes. As described in detail in the present review, P2 receptors are expressed by all tumours, in some cases to a very high level. Activation or inhibition of selected P2 receptor subtypes brings about cancer cell death or growth inhibition. The field has been largely neglected by current research in oncology, yet the evidence presented in this review, most of which is based on in vitro studies, although with a limited amount from in vivo experiments and human studies, warrants further efforts to explore the therapeutic potential of purinoceptor targeting in cancer.
Collapse
|
16
|
Burnstock G. Purinergic signalling in the gastrointestinal tract and related organs in health and disease. Purinergic Signal 2014; 10:3-50. [PMID: 24307520 PMCID: PMC3944042 DOI: 10.1007/s11302-013-9397-9] [Citation(s) in RCA: 84] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2013] [Accepted: 10/24/2013] [Indexed: 01/04/2023] Open
Abstract
Purinergic signalling plays major roles in the physiology and pathophysiology of digestive organs. Adenosine 5'-triphosphate (ATP), together with nitric oxide and vasoactive intestinal peptide, is a cotransmitter in non-adrenergic, non-cholinergic inhibitory neuromuscular transmission. P2X and P2Y receptors are widely expressed in myenteric and submucous enteric plexuses and participate in sympathetic transmission and neuromodulation involved in enteric reflex activities, as well as influencing gastric and intestinal epithelial secretion and vascular activities. Involvement of purinergic signalling has been identified in a variety of diseases, including inflammatory bowel disease, ischaemia, diabetes and cancer. Purinergic mechanosensory transduction forms the basis of enteric nociception, where ATP released from mucosal epithelial cells by distension activates nociceptive subepithelial primary afferent sensory fibres expressing P2X3 receptors to send messages to the pain centres in the central nervous system via interneurons in the spinal cord. Purinergic signalling is also involved in salivary gland and bile duct secretion.
Collapse
Affiliation(s)
- Geoffrey Burnstock
- Autonomic Neuroscience Centre, University College Medical School, Rowland Hill Street, London, NW3 2PF, UK,
| |
Collapse
|
17
|
A novel model of intimal hyperplasia with graded hypoosmotic damage. Cardiovasc Pathol 2012; 21:490-8. [DOI: 10.1016/j.carpath.2012.02.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2011] [Revised: 02/19/2012] [Accepted: 02/20/2012] [Indexed: 11/24/2022] Open
|
18
|
Wu L, Guan G, Hou HW, Bhagat AAS, Han J. Separation of Leukocytes from Blood Using Spiral Channel with Trapezoid Cross-Section. Anal Chem 2012; 84:9324-31. [DOI: 10.1021/ac302085y] [Citation(s) in RCA: 160] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Lidan Wu
- Department of Biological Engineering, Massachusetts Institute of Technology, United States
- Research Laboratory of Electronics, Massachusetts Institute of Technology, United States
| | - Guofeng Guan
- Department of Mechanical Engineering, National University of Singapore, Singapore
- Biosystems and Micromechanics
IRG, Singapore-MIT Alliance for Research and Technology (SMART), Singapore
| | - Han Wei Hou
- Research Laboratory of Electronics, Massachusetts Institute of Technology, United States
| | - Ali Asgar. S. Bhagat
- Biosystems and Micromechanics
IRG, Singapore-MIT Alliance for Research and Technology (SMART), Singapore
| | - Jongyoon Han
- Department of Biological Engineering, Massachusetts Institute of Technology, United States
- Biosystems and Micromechanics
IRG, Singapore-MIT Alliance for Research and Technology (SMART), Singapore
- Research Laboratory of Electronics, Massachusetts Institute of Technology, United States
- Department of Electrical Engineering
and Computer Science, Massachusetts Institute of Technology, United States
| |
Collapse
|
19
|
Cathelicidins in inflammation and tissue repair: Potential therapeutic applications for gastrointestinal disorders. Acta Pharmacol Sin 2010; 31:1118-22. [PMID: 20676121 DOI: 10.1038/aps.2010.117] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Cathelicidins, a family of host defense peptides, are highly expressed during infection, inflammation and wound healing. These peptides not only have broad-spectrum antimicrobial activities, but also modulate inflammation by altering cytokine response and chemoattraction of inflammatory cells in diseased tissues. In this connection, a mouse cathelicidin has been demonstrated to prevent inflammation in the colon through enhancing mucus production and reducing production of pro-inflammatory cytokines. In addition, cathelicidins promote wound healing through stimulation of re-epithelialization and angiogenesis at injured tissues. In an animal model of gastric ulceration, the rat cathelicidin promotes ulcer healing by inducing proliferation of gastric epithelial cells both in vitro and in vivo. In conclusion, cathelicidins represent an important group of effector molecules in the innate immune system that operates a complex integration of inflammation and tissue repair in the gastrointestinal mucosa and other organs.
Collapse
|
20
|
Prevention of tumor cell reimplantation during transurethral resection: the in-vitro antiadhesive and cytotoxic properties of an irrigant containing polyethylene glycol 400. Anticancer Drugs 2010; 21:645-50. [DOI: 10.1097/cad.0b013e32833a148d] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
21
|
Jähn K, Braunstein V, Furlong PI, Simpson AE, Richards RG, Stoddart MJ. A rapid method for the generation of uniform acellular bone explants: a technical note. J Orthop Surg Res 2010; 5:32. [PMID: 20459728 PMCID: PMC2873550 DOI: 10.1186/1749-799x-5-32] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2009] [Accepted: 05/10/2010] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Bone graft studies lack standardized controls. We aim to present a quick and reliable method for the intra-operative generation of acellular bone explants. METHODS Therefore, ovine cancellous bone explants from the iliac crest were prepared and used to test several methods for the induction of cell death. Over night heat inactivation was used as positive treatment control, methods to be investigated included UV light, or X- ray exposure, incubation in a hypotonic solution (salt-free water) and a short cycle of repeated freezing and thawing. RESULTS Viability of treated and 2 days cultured bone explants was investigated by lactate dehydrogenase assay. Non-treated cultured control explants maintained around 50% osteocyte viability, while osteocyte survival after the positive treatment control was abolished. The most dramatic loss in cell viability, together with a low standard deviation, was a repeated cycle of freezing and thawing. CONCLUSIONS To summarize, we present a freeze-thaw method for the creation of acellular bone explants, which is easy to perform, not time-consuming and provides consistent results.
Collapse
Affiliation(s)
- Katharina Jähn
- AO Research Institute, Clavadelerstrasse 8, 7270 Davos, Switzerland.
| | | | | | | | | | | |
Collapse
|
22
|
Zhang Y, Gong LH, Zhang HQ, Du Q, You JF, Tian XX, Fang WG. Extracellular ATP enhances in vitro invasion of prostate cancer cells by activating Rho GTPase and upregulating MMPs expression. Cancer Lett 2010; 293:189-97. [PMID: 20202742 DOI: 10.1016/j.canlet.2010.01.010] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2009] [Revised: 01/04/2010] [Accepted: 01/11/2010] [Indexed: 01/22/2023]
Abstract
We previously found that in addition to anti-proliferation function, extracellular ATP had a pro-invasion effect on prostate cancer cells, and probably serves as an important regulator of invasion in local microenvironment. However, the underlying mechanism remains unclear. In this study, we demonstrated that ATP increased the motility of prostate cancer cells, and promoted formation of lamellipodia and filopodia. We also found that ATP induced activation of Rac1 and Cdc42, and promoted expression of MMP-3 and MMP-13. These data suggest that extracellular ATP enhances the invasion of prostate cancer cells by activating Rho GTPases Rac1 and Cdc42 and upregulating MMPs expression.
Collapse
Affiliation(s)
- Yang Zhang
- Department of Pathology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Health Science Center, Beijing 100191, PR China
| | | | | | | | | | | | | |
Collapse
|
23
|
Corriden R, Insel PA. Basal release of ATP: an autocrine-paracrine mechanism for cell regulation. Sci Signal 2010; 3:re1. [PMID: 20068232 DOI: 10.1126/scisignal.3104re1] [Citation(s) in RCA: 263] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Cells release adenosine triphosphate (ATP), which activates plasma membrane-localized P2X and P2Y receptors and thereby modulates cellular function in an autocrine or paracrine manner. Release of ATP and the subsequent activation of P2 receptors help establish the basal level of activation (sometimes termed "the set point") for signal transduction pathways and regulate a wide array of responses that include tissue blood flow, ion transport, cell volume regulation, neuronal signaling, and host-pathogen interactions. Basal release and autocrine or paracrine responses to ATP are multifunctional, evolutionarily conserved, and provide an economical means for the modulation of cell, tissue, and organismal biology.
Collapse
Affiliation(s)
- Ross Corriden
- Departments of Pharmacology and Medicine, University of California, San Diego, La Jolla, CA 92093, USA
| | | |
Collapse
|
24
|
Activation of the NLRP3 inflammasome in dendritic cells induces IL-1beta-dependent adaptive immunity against tumors. Nat Med 2009; 15:1170-8. [PMID: 19767732 DOI: 10.1038/nm.2028] [Citation(s) in RCA: 1433] [Impact Index Per Article: 95.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2009] [Accepted: 08/18/2009] [Indexed: 02/07/2023]
Abstract
The therapeutic efficacy of anticancer chemotherapies may depend on dendritic cells (DCs), which present antigens from dying cancer cells to prime tumor-specific interferon-gamma (IFN-gamma)-producing T lymphocytes. Here we show that dying tumor cells release ATP, which then acts on P2X(7) purinergic receptors from DCs and triggers the NOD-like receptor family, pyrin domain containing-3 protein (NLRP3)-dependent caspase-1 activation complex ('inflammasome'), allowing for the secretion of interleukin-1beta (IL-1beta). The priming of IFN-gamma-producing CD8+ T cells by dying tumor cells fails in the absence of a functional IL-1 receptor 1 and in Nlpr3-deficient (Nlrp3(-/-)) or caspase-1-deficient (Casp-1(-/-)) mice unless exogenous IL-1beta is provided. Accordingly, anticancer chemotherapy turned out to be inefficient against tumors established in purinergic receptor P2rx7(-/-) or Nlrp3(-/-) or Casp1(-/-) hosts. Anthracycline-treated individuals with breast cancer carrying a loss-of-function allele of P2RX7 developed metastatic disease more rapidly than individuals bearing the normal allele. These results indicate that the NLRP3 inflammasome links the innate and adaptive immune responses against dying tumor cells.
Collapse
|
25
|
van den Tillaart SAHM, Busard MPH, Trimbos JBMZ. The use of distilled water in the achievement of local hemostasis during surgery. ACTA ACUST UNITED AC 2009; 6:255-259. [PMID: 20234842 PMCID: PMC2837248 DOI: 10.1007/s10397-008-0464-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2008] [Accepted: 12/29/2008] [Indexed: 11/30/2022]
Abstract
Distilled water is used worldwide to check on hemostasis at the end of pelvic oncological operations. Nevertheless, reports about this method are lacking. The aim of this study was to explain the method and to discuss possible side effects. After the addition of distilled water to the surgically exposed pelvis, rapid lysis of erythrocytes results in a transparent fluid in which a small source of bleeding is easily recognizable. A possible side effect of the lavage might be contribution to the formation of peritoneal adhesions by confusing the abdominal defence system. Systemic side effects are not to be expected. Although tumour cells might suffer from hypotonic distilled water lavage, the current use of distilled water at the end of surgery is probably not effective to lyse tumour cells. Our findings support the ongoing use of distilled water lavage to achieve hemostasis after extensive pelvic surgery.
Collapse
Affiliation(s)
- S. A. H. M. van den Tillaart
- Department of Gynaecology K6-P, Leiden University Medical Center, P.O. Box 9600, 2300 RC Leiden, The Netherlands
| | - M. P. H. Busard
- Department of Gynaecology K6-P, Leiden University Medical Center, P.O. Box 9600, 2300 RC Leiden, The Netherlands
| | - J. B. M. Z. Trimbos
- Department of Gynaecology K6-P, Leiden University Medical Center, P.O. Box 9600, 2300 RC Leiden, The Netherlands
| |
Collapse
|
26
|
Ahmadian S, Abolghassemi Fakhree MA. Lipid based nanoparticles containing saturated solution of NaCl, may be used to targeted eradication of cancerous cells. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/j.bihy.2009.02.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
27
|
Deli T, Csernoch L. Extracellular ATP and cancer: an overview with special reference to P2 purinergic receptors. Pathol Oncol Res 2008; 14:219-31. [PMID: 18575829 DOI: 10.1007/s12253-008-9071-7] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2008] [Accepted: 05/22/2008] [Indexed: 12/12/2022]
Abstract
Purinergic signal transduction mechanisms have been appreciated as a complex intercellular signalling network that plays an important regulatory role in both short- and long-term processes in practically every living cell. One of the most intriguing aspects of the field is the participation of ATP and other purine nucleotides in the determination of cell fate and the way they direct cells towards proliferation, differentiation or apoptosis, thereby possibly taking part in promoting or preventing malignant transformation. In this review, following a very brief introduction to the historical aspects of purinergic signalling and a concise overview of the structure of and signal transduction pathways coupled to P2 purinergic receptors, the current theories concerning the possible ways how extracellular ATP can alter the function of tumour cells and the effectiveness of anticancer therapies are discussed, including pharmacological, nutritional, vasoactive and 'anti-antioxidant' actions of the nucleotide. The effects of ATP on animals inoculated with human tumours and on patients with cancer are looked over next, and then an overview of the literature regarding the expression and presumed functions of P2 purinoceptors on tumour cells in vitro is presented, sorted out according to the relevant special clinical fields. The article is closed by reviewing the latest developments in the diagnostic use of P2 purinergic receptors as tumour markers and prognostic factors, while discussing some of the difficulties and pitfalls of the therapeutic use of ATP analogues.
Collapse
Affiliation(s)
- Tamás Deli
- Department of Physiology, Research Centre for Molecular Medicine, Medical and Health Science Centre, University of Debrecen, Debrecen, Hungary
| | | |
Collapse
|
28
|
Franco R, Panayiotidis MI, de la Paz LDO. Autocrine signaling involved in cell volume regulation: the role of released transmitters and plasma membrane receptors. J Cell Physiol 2008; 216:14-28. [PMID: 18300263 DOI: 10.1002/jcp.21406] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Cell volume regulation is a basic homeostatic mechanism transcendental for the normal physiology and function of cells. It is mediated principally by the activation of osmolyte transport pathways that result in net changes in solute concentration that counteract cell volume challenges in its constancy. This process has been described to be regulated by a complex assortment of intracellular signal transduction cascades. Recently, several studies have demonstrated that alterations in cell volume induce the release of a wide variety of transmitters including hormones, ATP and neurotransmitters, which have been proposed to act as extracellular signals that regulate the activation of cell volume regulatory mechanisms. In addition, changes in cell volume have also been reported to activate plasma membrane receptors (including tyrosine kinase receptors, G-protein coupled receptors and integrins) that have been demonstrated to participate in the regulatory process of cell volume. In this review, we summarize recent studies about the role of changes in cell volume in the regulation of transmitter release as well as in the activation of plasma membrane receptors and their further implications in the regulation of the signaling machinery that regulates the activation of osmolyte flux pathways. We propose that the autocrine regulation of Ca2+-dependent and tyrosine phosphorylation-dependent signaling pathways by the activation of plasma membrane receptors and swelling-induced transmitter release is necessary for the activation/regulation of osmolyte efflux pathways and cell volume recovery. Furthermore, we emphasize the importance of studying these extrinsic signals because of their significance in the understanding of the physiology of cell volume regulation and its role in cell biology in vivo, where the constraint of the extracellular space might enhance the autocrine or even paracrine signaling induced by these released transmitters.
Collapse
Affiliation(s)
- Rodrigo Franco
- Laboratory of Cell Biology and Signal Transduction, Biomedical Research Unit, FES-Iztacala, UNAM, Mexico.
| | | | | |
Collapse
|
29
|
Hopfe M, Henrich B. OppA, the ecto-ATPase of Mycoplasma hominis induces ATP release and cell death in HeLa cells. BMC Microbiol 2008; 8:55. [PMID: 18394151 PMCID: PMC2323007 DOI: 10.1186/1471-2180-8-55] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2007] [Accepted: 04/04/2008] [Indexed: 12/21/2022] Open
Abstract
Background In the facultative human pathogen Mycoplasma hominis, which belongs to the cell wall-less Mollicutes, the surface-localised substrate-binding domain OppA of the oligopeptide permease was characterised as the main ecto-ATPase. Results With the idea that extra-cellular ATP could only be provided by the infected host cells we analysed the ATP release of HeLa cells after incubation with different preparations of Mycoplasma hominis: intact bacterial cells, the membrane fraction with or without OppA, recombinant OppA as well as an ATPase-deficient OppA mutant. Release of ATP into the supernatant of the HeLa cells was primarily determined in all samples lacking ecto-ATPase activity of OppA. In the presence of the ATPase inhibitor DIDS the amount of ATP in the OppA-containing samples increased. This increase was maximal after incubation with fractions containing OppA protein indicating that OppA is involved in ATP release and subsequent hydrolysis. Real-time PCR analyses revealed that the proliferation of HeLa cells is reduced after infection with M. hominis and flow cytometry experiments established that OppA induces greater apoptosis than necrosis of HeLa cells whereas the preservation of ecto-ATPase activity of OppA induces apoptosis. Conclusion The OppA induced ATP-release and -hydrolysis induced cell death of M. hominis infected HeLa cells was predominantly due to apoptosis rather than necrosis. Future work will elucidate whether the induction of apoptosis is indispensable for survival of these non-invasive pathogen.
Collapse
Affiliation(s)
- Miriam Hopfe
- Institute of Medical Microbiology and Center for Biological Medical Research, Heinrich-Heine-University, Moorenstrasse 5, 40225 Duesseldorf, Germany.
| | | |
Collapse
|
30
|
Abstract
The concept of a purinergic signaling system, using purine nucleotides and nucleosides as extracellular messengers, was first proposed over 30 years ago. After a brief introduction and update of purinoceptor subtypes, this article focuses on the diverse pathophysiological roles of purines and pyrimidines as signaling molecules. These molecules mediate short-term (acute) signaling functions in neurotransmission, mechanosensory transduction, secretion and vasodilatation, and long-term (chronic) signaling functions in cell proliferation, differentiation, and death involved in development and regeneration. Plasticity of purinoceptor expression in pathological conditions is frequently observed, including an increase in the purinergic component of autonomic cotransmission. Recent advances in therapies using purinergic-related drugs in a wide range of pathological conditions will be addressed with speculation on future developments in the field.
Collapse
Affiliation(s)
- Geoffrey Burnstock
- Autonomic Neuroscience Centre, Royal Free and University College Medical School, London NW3 2PF, UK.
| |
Collapse
|