|
1
|
DNA damage and repair measured by comet assay in cancer patients. MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2019; 843:95-110. [DOI: 10.1016/j.mrgentox.2019.05.009] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Revised: 05/14/2019] [Accepted: 05/18/2019] [Indexed: 02/08/2023]
|
|
2
|
Elias CDMV, Maia Filho ALM, Silva LRD, Amaral FPDMD, Webster TJ, Marciano FR, Lobo AO. In Vivo Evaluation of the Genotoxic Effects of Poly (Butylene adipate-co-terephthalate)/Polypyrrole with Nanohydroxyapatite Scaffolds for Bone Regeneration. MATERIALS (BASEL, SWITZERLAND) 2019; 12:E1330. [PMID: 31022828 PMCID: PMC6515421 DOI: 10.3390/ma12081330] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Revised: 04/11/2019] [Accepted: 04/13/2019] [Indexed: 12/11/2022]
Abstract
Here, butylene adipate-co-terephthalate/polypyrrole with nanohydroxyapatite (PBAT/PPy/nHAp) scaffolds were fabricated and characterized. The electrospinning process was carried out using 12 kV, a needle of 23 G, an infusion pump set at 0.3 mL/h, and 10 cm of distance. Afterwards, nHAp was directly electrodeposited onto PBAT/PPy scaffolds using a classical three-electrode apparatus. For in vivo assays (comet assay, acute and chronic micronucleus), 60 male albino Wistar rats with 4 groups were used in each test (n = 5): PBAT/PPy; PBAT/PPy/nHAp; positive control (cyclophosphamide); and the negative control (distilled water). Peripheral blood samples were collected from the animals to perform the comet test after 4 h (for damage) and 24 h (for repair). In the comet test, it was shown that the scaffolds did not induce damage to the % DNA tail and neither for tail length. After the end of 48 h (for acute micronucleus) and 72 h (for chronic micronucleus), bone marrow was collected from each rat to perform the micronucleus test. All of the produced scaffolds did not present genotoxic effects, providing strong evidence for the biological application of PBAT/PPy/nHAp scaffolds.
Collapse
Affiliation(s)
- Conceição de Maria Vaz Elias
- Biomedical Engineering graduate program, Scientific and Technological Institute, Brasil University, São Paulo, SP 08230-030, Brazil.
| | | | - Laryssa Roque da Silva
- Laboratory of Experimental Surgery and Mutagenicity, State University of Piauí, Teresina, PI 64001-280, Brazil.
| | | | - Thomas J Webster
- Department of Chemical Engineering, Northeastern University, Boston, MA 02115, USA.
| | | | - Anderson Oliveira Lobo
- LIMAV-Interdisciplinary Laboratory for Advanced Materials, UFPI-Federal University of Piauí, Teresina, PI 64049-550, Brazil.
| |
Collapse
|
|
3
|
Ru Y, Chen XJ, Guo WZ, Gao SG, Qi YJ, Chen P, Feng XS, Zhang SJ. NEAT1_2-SFPQ axis mediates cisplatin resistance in liver cancer cells in vitro. Onco Targets Ther 2018; 11:5695-5702. [PMID: 30254462 PMCID: PMC6140748 DOI: 10.2147/ott.s163774] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Background Liver cancer is a type of malignant tumor with high morbidity and mortality in People’s Republic of China. Its occurrence and development involve the variation and expression changes of multiple genes, and the pathogenesis and related regulatory networks are complex. Purpose In the present research, we investigate the involvement of NEAT1_2 and SFPQ in cisplatin resistance in liver cancer. The effects of LncRNA NEAT1 and SFPQ expression on the chemotherapeutic resistance of liver cancer cells were analyzed. Methods The expression level of NEAT1_2 and SFPQ mRNA in tissue specimens or cell lines were examined by RT-qPCR and western blotting. CCK-8 assay was performed to evaluate cell viability. Cell proliferation was performed using the EdU cell proliferation assay. Results Our data showed that increase NEAT1_2 and SFPQ expressions in liver cancer specimens were associated with the development of cisplatin resistance; high SFPQ expression level impaired patients’ survival from liver cancer. Gain-and loss-of function assay using NEAT1_2 knock-in and knock-out cells constructed using CRISPER/Cas9 system revealed that NEAT1_2 is essential for liver cancer cell survival and mediates cisplatin resistance in liver cancer cells at least partially through SFPQ. Artificial change in NEAT1_2 expression level didn’t significantly influence SFPQ transcription or translation level. Conclusion Our data revealed NEAT1_2—SFPQ axis as a novel cisplatin resistance mechanism in liver cancer cells in vitro.
Collapse
Affiliation(s)
- Yi Ru
- Henan Key Laboratory of Digestive Organ Transplantation, .,Open Laboratory of Key Disciplines of Hepatobiliary and Pancreatic Surgery and Digestive Organ Transplantation, .,Key Laboratory of Hepatobiliaryand Pancreatic Diseases and Organ Transplant Medicine, .,Department of Hepatobiliary and Pancreatic Surgery, First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, People's Republic of China,
| | - Xiao-Jie Chen
- Henan Key Laboratory of Cancer Epigenetics; Cancer Institute, The First Affiliated Hospital and College of Clinical Medicine of Henan University of Science and Technology, Luoyang, Henan Province, People's Republic of China,
| | - Wen-Zhi Guo
- Henan Key Laboratory of Digestive Organ Transplantation, .,Open Laboratory of Key Disciplines of Hepatobiliary and Pancreatic Surgery and Digestive Organ Transplantation, .,Key Laboratory of Hepatobiliaryand Pancreatic Diseases and Organ Transplant Medicine, .,Department of Hepatobiliary and Pancreatic Surgery, First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, People's Republic of China,
| | - She-Gan Gao
- Henan Key Laboratory of Cancer Epigenetics; Cancer Institute, The First Affiliated Hospital and College of Clinical Medicine of Henan University of Science and Technology, Luoyang, Henan Province, People's Republic of China,
| | - Yi-Jun Qi
- Henan Key Laboratory of Cancer Epigenetics; Cancer Institute, The First Affiliated Hospital and College of Clinical Medicine of Henan University of Science and Technology, Luoyang, Henan Province, People's Republic of China,
| | - Pan Chen
- Henan Key Laboratory of Cancer Epigenetics; Cancer Institute, The First Affiliated Hospital and College of Clinical Medicine of Henan University of Science and Technology, Luoyang, Henan Province, People's Republic of China,
| | - Xiao-Shan Feng
- Henan Key Laboratory of Cancer Epigenetics; Cancer Institute, The First Affiliated Hospital and College of Clinical Medicine of Henan University of Science and Technology, Luoyang, Henan Province, People's Republic of China,
| | - Shui-Jun Zhang
- Henan Key Laboratory of Digestive Organ Transplantation, .,Open Laboratory of Key Disciplines of Hepatobiliary and Pancreatic Surgery and Digestive Organ Transplantation, .,Key Laboratory of Hepatobiliaryand Pancreatic Diseases and Organ Transplant Medicine, .,Department of Hepatobiliary and Pancreatic Surgery, First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, People's Republic of China,
| |
Collapse
|