1
|
Ahn CH, Kim JH, Shim HW, Shin WJ, Cho YA, Yoon HJ. Biological and prognostic significance of NDRG2 downregulation in oral squamous cell carcinoma. Oral Dis 2024. [PMID: 38887830 DOI: 10.1111/odi.15045] [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: 03/19/2024] [Revised: 05/14/2024] [Accepted: 06/04/2024] [Indexed: 06/20/2024]
Abstract
OBJECTIVE Downregulation of N-myc downstream-regulated gene 2 (NDRG2), a tumor suppressor gene, has been associated with poor clinical outcomes in various cancers. However, the prognostic significance of NDRG2 in oral squamous cell carcinoma (OSCC) remains unknown. This study aimed to evaluate the prognostic value of NDRG2 downregulation in OSCC and to elucidate the mechanism by which NDRG2 is downregulated and the biological role of NDRG2 in tumor progression. METHODS Immunohistochemical and in silico analyses of NDRG2 expression were performed, and the correlation between NDRG2 expression and clinicopathological data was analyzed. The effect of NDRG2 knockdown on the biological behavior of OSCC cells was investigated and the effect of 5-aza-2'-deoxycytidine (5-aza-dC) on NDRG2 expression was determined. RESULTS NDRG2 expression was significantly downregulated and DNA hypermethylation of NDRG2 was frequently found in head and neck SCC, including OSCC. Low NDRG2 expression was significantly correlated with adverse clinicopathological features and worse survival in OSCC. NDRG2 knockdown could enhance the oncogenic properties of OSCC cells. NDRG2 mRNA levels in OSCC cells could be restored by 5-aza-dC. CONCLUSION Downregulation of NDRG2 promotes tumor progression and predicts poor prognosis in OSCC. Therefore, restoration of NDRG2 expression may be a potential therapeutic strategy in OSCC.
Collapse
Affiliation(s)
- Chi-Hyun Ahn
- Department of Oral Pathology, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, South Korea
| | - Ji-Hoon Kim
- Department of Oral Pathology, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, South Korea
| | - Hye-Won Shim
- Department of Oral Pathology, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, South Korea
- Department of Dentistry, Inje University Ilsan Paik Hospital, Goyang, South Korea
| | - Wui-Jung Shin
- Department of Oral Pathology, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, South Korea
| | - Young-Ah Cho
- Department of Oral Pathology, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, South Korea
| | - Hye-Jung Yoon
- Department of Oral Pathology, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, South Korea
- Department of Oral Pathology, Seoul National University Dental Hospital, Seoul, South Korea
| |
Collapse
|
2
|
Yang Y, Huang L, Gao J, Qian B. Salvianolic acid B inhibits the growth and metastasis of A549 lung cancer cells through the NDRG2/PTEN pathway by inducing oxidative stress. Med Oncol 2024; 41:170. [PMID: 38847902 DOI: 10.1007/s12032-024-02413-6] [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: 04/16/2024] [Accepted: 05/23/2024] [Indexed: 07/03/2024]
Abstract
Salvianolic acid B (Sal B) has demonstrated anticancer activity against various types of cancer. However, the underlying mechanism of Sal B-mediated anticancer effects remains incompletely understood. This study aims to investigate the impact of Sal B on the growth and metastasis of human A549 lung cells, as well as elucidate its potential mechanisms. In this study, different concentrations of Sal B were administered to A549 cells. The effects on migration and invasion abilities were assessed using MTT, wound healing, and transwell assays. Flow cytometry analysis was employed to evaluate Sal B-induced apoptosis in A549 cells. Western blotting and immunohistochemistry were conducted to measure the expression levels of cleaved caspase-3, cleaved PARP, and E-cadherin. Commercial kits were utilized for detecting intracellular reactive oxygen species (ROS) and NAD+. Additionally, a xenograft model with transplanted A549 tumors was employed to assess the anti-tumor effect of Sal B in vivo. The expression levels of NDRG2, p-PTEN, and p-AKT were determined through western blotting. Our findings demonstrate that Sal B effectively inhibits proliferation, migration, and invasion in A549 cells while inducing dose-dependent apoptosis. These apoptotic responses and inhibition of tumor cell metastasis are accompanied by alterations in intracellular ROS levels and NAD+/NADH ratio. Furthermore, our in vivo experiment reveals that Sal B significantly suppresses A549 tumor growth compared to an untreated control group while promoting increased cleavage of caspase-3 and PARP. Importantly, we observe that Sal B upregulates NDRG2 expression while downregulating p-PTEN and p-AKT expressions. Collectively, our results provide compelling evidence supporting the ability of Sal B to inhibit both growth and metastasis in A549 lung cancer cells through oxidative stress modulation as well as involvement of the NDRG2/PTEN/AKT pathway.
Collapse
Affiliation(s)
- Ye Yang
- Department of Pharmacology and Medicinal Chemistry, Jiangsu Vocational College of Medicine, Yancheng, 224005, Jiangsu, People's Republic of China
| | - Lei Huang
- Department of Pharmacology and Medicinal Chemistry, Jiangsu Vocational College of Medicine, Yancheng, 224005, Jiangsu, People's Republic of China
| | - Jie Gao
- Clinical Pharmacology Laboratory, Jiangsu Provincial Hospital of Traditional Chinese Medicine, Nanjing, 210004, Jiangsu, People's Republic of China
| | - Bingjun Qian
- Department of Pharmacology and Medicinal Chemistry, Jiangsu Vocational College of Medicine, Yancheng, 224005, Jiangsu, People's Republic of China.
| |
Collapse
|
3
|
Wu S, Zhang J, Chen S, Zhou X, Liu Y, Hua H, Qi X, Mao Y, Young KH, Lu T. Low NDRG2, regulated by the MYC/MIZ-1 complex and methylation, predicts poor outcomes in DLBCL patients. Ann Hematol 2024:10.1007/s00277-024-05829-2. [PMID: 38842567 DOI: 10.1007/s00277-024-05829-2] [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: 10/12/2023] [Accepted: 05/30/2024] [Indexed: 06/07/2024]
Abstract
Diffuse large B-cell lymphoma (DLBCL) represents the most common tumor in non-Hodgkin's lymphoma. N-Myc downstream-regulated gene 2 (NDRG2) is a tumor suppressor highly expressed in healthy tissues but downregulated in many cancers. Although cell proliferation-related metabolism rewiring has been well characterized, less is known about the mechanism of metabolic changes with DLBCL. Herein, we investigated the expressions of NDRG2, MYC and Myc-interacting zinc finger protein 1 (MIZ-1) in seven human lymphoma (mostly DLBCLs) cell lines. NDRG2 expression was inversely correlated with the expressions of MYC and MIZ-1. Further, we explored the regulatory mechanism and biological functions underlying the lymphomagenesis involving NDRG2, MYC and MIZ-1. MYC and MIZ-1 promoted DLBCL cell proliferation, while NDRG2 induced apoptosis in LY8 cells. Moreover, NDRG2 methylation was reversed by the 5-Aza-2'-deoxycytidine (5-Aza-CDR) treatment, triggering the downregulation of MYC and inhibiting DLBCL cell survival. MYC interacts with NDRG2 to regulate energy metabolism associated with mTOR. Remarkably, supporting the biological significance, the converse correlation between NDRG2 and MYC was observed in human DLBCL tumor tissues (R = -0.557). Bioinformatics analysis further validated the association among NDRG2, MYC, MIZ-1, mTOR, and related metabolism genes. Additionally, NDRG2 (P = 0.001) and MYC (P < 0.001) were identified as promising prognostic biomarkers in DLBCL patients through survival analysis. Together, our data demonstrate that the MYC/MIZ-1 complex interplays with NDRG2 to influence the proliferation and apoptosis of DLBCL cells and show the characterizations of NDRG2, MYC and MIZ-1 for metabolism features and prediction prognosis in DLBCL.
Collapse
Affiliation(s)
- Shuang Wu
- Department of Hematology, Affiliated Hospital of Jiangnan University, Wuxi, 214122, Jiangsu Province, China
| | - Jie Zhang
- Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, Jiangsu Province, China
- Department of Oncology, Affiliated Hospital of Jiangnan University, No.1000, Hefeng Road, Wuxi, 214122, Jiangsu Province, China
| | - Shan Chen
- Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, Jiangsu Province, China
- Department of Oncology, Affiliated Hospital of Jiangnan University, No.1000, Hefeng Road, Wuxi, 214122, Jiangsu Province, China
| | - Xinyi Zhou
- Department of Pathology, Affiliated Hospital of Jiangnan University, Wuxi, 214122, Jiangsu Province, China
| | - Yankui Liu
- Department of Pathology, Affiliated Hospital of Jiangnan University, Wuxi, 214122, Jiangsu Province, China
| | - Haiying Hua
- Department of Hematology, Affiliated Hospital of Jiangnan University, Wuxi, 214122, Jiangsu Province, China
| | - Xiaowei Qi
- Department of Pathology, Affiliated Hospital of Jiangnan University, Wuxi, 214122, Jiangsu Province, China
| | - Yong Mao
- Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, Jiangsu Province, China
- Department of Oncology, Affiliated Hospital of Jiangnan University, No.1000, Hefeng Road, Wuxi, 214122, Jiangsu Province, China
| | - Ken H Young
- Division of Hematopathology, Department of Pathology, Duke University School of Medicine, Durham, NC, 27710, USA
- Duke Cancer Institute, Durham, NC, 27710, USA
| | - Tingxun Lu
- Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, Jiangsu Province, China.
- Department of Oncology, Affiliated Hospital of Jiangnan University, No.1000, Hefeng Road, Wuxi, 214122, Jiangsu Province, China.
- Division of Hematopathology, Department of Pathology, Duke University School of Medicine, Durham, NC, 27710, USA.
| |
Collapse
|
4
|
Ma Z, Ma Y, Feng J, Xu Z, Cheng C, Qin J, Li S, Jiang J, Kong R. NDRG2 acts as a negative regulator of the progression of small-cell lung cancer through the modulation of the PTEN-AKT-mTOR signalling cascade. Toxicol Appl Pharmacol 2024; 485:116915. [PMID: 38537875 DOI: 10.1016/j.taap.2024.116915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2023] [Revised: 03/20/2024] [Accepted: 03/24/2024] [Indexed: 04/08/2024]
Abstract
N-myc downstream-regulated gene 2 (NDRG2) has been recognised as a negative regulator of the progression of numerous tumours, yet its specific role in small-cell lung carcinoma (SCLC) is not fully understood. The purpose of the current study was to investigate the biological role and mechanism of NDRG2 in SCLC. Initial investigation using the Gene Expression Omnibus (GEO) dataset revealed marked downregulation of NDRG2 transcripts in SCLC. The decreased abundance of NDRG2 in SCLC was verified by examining clinical specimens. Increasing NDRG2 expression in SCLC cell lines caused significant changes in cell proliferation, cell cycle progression, colony formation, and chemosensitivity. NDRG2 overexpression decreased the levels of phosphorylated PTEN, AKT and mTOR. In PTEN-depleted SCLC cells, the upregulation of NDRG2 did not result in any noticeable impact on AKT or mTOR activation. Additionally, the reactivation of AKT reversed the antitumour effects of NDRG2 in SCLC cells. Notably, increasing NDRG2 expression retarded the growth of SCLC cell-derived xenografts in vivo. In conclusion, NDRG2 serves as an inhibitor of SCLC, and its cancer-inhibiting effects are achieved through the suppression of AKT/mTOR via the activation of PTEN. This work suggests that NDRG2 is a potential druggable target for SCLC treatment.
Collapse
Affiliation(s)
- Zhenchuan Ma
- Department of Thoracic Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, China
| | - Yuefeng Ma
- Department of Thoracic Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, China
| | - Jie Feng
- Department of Nephrology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, China
| | - Zhengshui Xu
- Department of Thoracic Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, China
| | - Chuantao Cheng
- Department of Dermatology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, China
| | - Jie Qin
- Department of Orthopedics, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, China
| | - Shaomin Li
- Department of Thoracic Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, China
| | - Jiantao Jiang
- Department of Thoracic Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, China.
| | - Ranran Kong
- Department of Thoracic Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, China.
| |
Collapse
|
5
|
Chen T, Xiong Y, Deng C, Hu C, Li M, Quan R, Yu X. NDRG2 alleviates photoreceptor apoptosis by regulating the STAT3/TIMP3/MMP pathway in mice with retinal degenerative disease. FEBS J 2024; 291:986-1007. [PMID: 38037211 DOI: 10.1111/febs.17021] [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: 06/19/2023] [Revised: 10/05/2023] [Accepted: 10/29/2023] [Indexed: 12/02/2023]
Abstract
Photoreceptor apoptosis is the main pathological feature of retinal degenerative diseases; however, the underlying molecular mechanism has not been elucidated. Recent studies have shown that N-myc downstream regulated gene 2 (NDRG2) exerts a neuroprotective effect on the brain and spinal cord. In addition, our previous studies have confirmed that NDRG2 is expressed in mouse retinal photoreceptors and counteracts N-methyl-N-nitrosourea (MNU)-induced apoptosis. However, the underlying molecular mechanism remains unclear. In this study, we observed that the expression of NDRG2 was not only significantly inhibited in photoreceptors after MNU treatment but also after hydrogen peroxide treatment, and photoreceptor apoptosis was alleviated or aggravated after overexpression or knockdown of NDRG2 in the 661W photoreceptor cell line, respectively. The apoptosis inhibitor Z-VAD-FMK rescued photoreceptor apoptosis induced by MNU after NDRG2 knockdown. Next, we screened and identified tissue inhibitor of metalloproteinases 3 (TIMP3) as the downstream molecule of NDRG2 in 661W cells by using quantitative real-time polymerase chain reaction. TIMP3 exerts a neuroprotective effect by inhibiting the expression of matrix metalloproteinases (MMPs). Subsequently, we found that signal transducer and activator of transcription 3 (STAT3) mediated the NDRG2-associated regulation of TIMP3. Finally, we overexpressed NDRG2 in mouse retinal tissues by intravitreally injecting an adeno-associated virus with mouse NDRG2 in vivo. Results showed that NDRG2 upregulated the expression of phospho-STAT3 (p-STAT3) and TIMP3, while suppressing MNU-induced photoreceptor apoptosis and MMP expression. Our findings revealed how NDRG2 regulates the STAT3/TIMP3/MMP pathway and uncovered the molecular mechanism underlying its neuroprotective effect on mouse retinal photoreceptors.
Collapse
Affiliation(s)
- Tao Chen
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Institute of Molecular and Translational Medicine, Xi'an Jiaotong University, China
| | - Yecheng Xiong
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Institute of Molecular and Translational Medicine, Xi'an Jiaotong University, China
| | - Chunlei Deng
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Institute of Molecular and Translational Medicine, Xi'an Jiaotong University, China
| | - Chengbiao Hu
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Institute of Molecular and Translational Medicine, Xi'an Jiaotong University, China
| | - Mengxing Li
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Institute of Molecular and Translational Medicine, Xi'an Jiaotong University, China
| | - Rui Quan
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Institute of Molecular and Translational Medicine, Xi'an Jiaotong University, China
| | - Xiaorui Yu
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Institute of Molecular and Translational Medicine, Xi'an Jiaotong University, China
- Key Laboratory of Environment and Genes Related to Diseases, Xi'an Jiaotong University, Ministry of Education, China
| |
Collapse
|
6
|
Beltrame FL, Moysés THP, Coelho MP, Steinvascher MCR, de Oliveira SA, da Silva AAS, Cerri PS, Sasso-Cerri E. Role of serotonin, estrogen, and TNF-α in the paroxetine-impaired steroidogenesis and testicular macrophages polarization. Andrology 2024; 12:655-673. [PMID: 37675929 DOI: 10.1111/andr.13513] [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: 01/26/2023] [Revised: 07/19/2023] [Accepted: 08/08/2023] [Indexed: 09/08/2023]
Abstract
BACKGROUND Paroxetine, a selective serotonin reuptake inhibitor (SSRI) antidepressant, has caused male sexual dysfunction; however, the paroxetine mechanisms of action in testes are still unclear. OBJECTIVES Paroxetine serotonergic effects in testes were evaluated, focusing on steroidogenesis and the correlation between macrophages population and possible TNF-α-derived oxidative stress. We also verified whether the changes are reversible following treatment interruption. MATERIALS AND METHODS Adult rats received paroxetine (PG35 and PG65) or tap water (CG) for 35 days. PG65 was maintained without treatment for 30 more days. Intratesticular testosterone (IT), nitrite, and malondialdehyde concentrations were measured. To confirm serotonergic and estrogenic effects, Htr1b and Esr1 expressions were analyzed. The daily sperm production (DSP), frequency of abnormal seminiferous tubules (ST), SC number, ST area, and Leydig cells nuclear area (LCnu) were evaluated. TUNEL+ germ cells, M1 (CD68+ ), and M2 (Perls+ ) macrophages were quantified. 17β-HSD7, CYP19A1, NDRG2, oxytocin, TNF-α, and iNOS were evaluated by immunoreactions. Oxytocin and NDRG2 protein levels as well as Tnfa mRNA expression were also analyzed. RESULTS The Htr1b downregulation in testes confirmed the paroxetine serotonergic effect. The testicular sections showed abnormal ST frequency, ST atrophy and reduction of DSP, LCnu, SC number and Perls+ macrophages. TUNEL+ germ cells and LC were associated with strong NDRG2 immunoexpression. Paroxetine reduced IT levels and 17β-HSD7 immunoexpression in parallel to increased CYP19A1, oxytocin, TNF-α and iNOS. Esr1 and Tnfa overexpression and increased number of CD68+ macrophages were also observed together with high nitrite and malondialdehyde levels. Most parameters were not recovered in PG65. CONCLUSIONS Paroxetine serotonergic effect impairs LC steroidogenesis, via aromatization, increasing estrogen/testosterone ratio, which in turn upregulate NDRG2, promoting apoptosis, and impairing sperm production. Serotonin-estrogen pathways may be responsible for M2/M1 polarization, Tnfa upregulation, and induction of oxidative stress. The unrecovered testicular changes after treatment discontinuation are due to persistent paroxetine serotonin/estrogen effects.
Collapse
Affiliation(s)
- Flávia Luciana Beltrame
- Department of Morphology and Genetics, Federal University of São Paulo, São Paulo, Brazil
- Institute of Health Sciences, Paulista University (UNIP), São Paulo, Brazil
| | | | | | - Maria Clara Rossetto Steinvascher
- School of Dentistry, Department of Morphology, Genetics, Orthodontics and Pediatric Dentistry, São Paulo State University (Unesp), Araraquara, Brazil
| | | | | | - Paulo Sérgio Cerri
- School of Dentistry, Department of Morphology, Genetics, Orthodontics and Pediatric Dentistry, São Paulo State University (Unesp), Araraquara, Brazil
| | - Estela Sasso-Cerri
- School of Dentistry, Department of Morphology, Genetics, Orthodontics and Pediatric Dentistry, São Paulo State University (Unesp), Araraquara, Brazil
| |
Collapse
|
7
|
Ichikawa T, Suekane A, Nakahata S, Iha H, Shimoda K, Murakami T, Morishita K. Inhibition of PRMT5/MEP50 Arginine Methyltransferase Activity Causes Cancer Vulnerability in NDRG2 low Adult T-Cell Leukemia/Lymphoma. Int J Mol Sci 2024; 25:2842. [PMID: 38474089 DOI: 10.3390/ijms25052842] [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: 01/25/2024] [Revised: 02/21/2024] [Accepted: 02/27/2024] [Indexed: 03/14/2024] Open
Abstract
N-myc downstream-regulated gene 2 (NDRG2), which is a tumour suppressor, is frequently lost in many types of tumours, including adult T-cell leukaemia/lymphoma (ATL). The downregulation of NDRG2 expression is involved in tumour progression through the aberrant phosphorylation of several important signalling molecules. We observed that the downregulation of NDRG2 induced the translocation of protein arginine methyltransferase 5 (PRMT5) from the nucleus to the cytoplasm via the increased phosphorylation of PRMT5 at Serine 335. In NDRG2low ATL, cytoplasmic PRMT5 enhanced HSP90A chaperone activity via arginine methylation, leading to tumour progression and the maintenance of oncogenic client proteins. Therefore, we examined whether the inhibition of PRMT5 activity is a drug target in NDRG2low tumours. The knockdown of PRMT5 and binding partner methylsome protein 50 (MEP50) expression significantly demonstrated the suppression of cell proliferation via the degradation of AKT and NEMO in NDRG2low ATL cells, whereas NDRG2-expressing cells did not impair the stability of client proteins. We suggest that the relationship between PRMT5/MEP50 and the downregulation of NDRG2 may exhibit a novel vulnerability and a therapeutic target. Treatment with the PRMT5-specific inhibitors CMP5 and HLCL61 was more sensitive in NDRG2low cancer cells than in NDRG2-expressing cells via the inhibition of HSP90 arginine methylation, along with the degradation of client proteins. Thus, interference with PRMT5 activity has become a feasible and effective strategy for promoting cancer vulnerability in NDRG2low ATL.
Collapse
Affiliation(s)
- Tomonaga Ichikawa
- Division of Tumor and Cellular Biochemistry, Department of Medical Sciences, University of Miyazaki, Miyazaki 889-1692, Japan
- Department of Microbiology, Saitama Medical University, 38 Morohongo, Moroyama, Iruma-gun, Saitama 350-0495, Japan
| | - Akira Suekane
- Trauma and Acute Critical Care Center, Tokyo Medical and Dental University Hospital, Tokyo 113-8510, Japan
| | - Shingo Nakahata
- Division of Tumor and Cellular Biochemistry, Department of Medical Sciences, University of Miyazaki, Miyazaki 889-1692, Japan
- Division of HTLV-1/ATL Carcinogenesis and Therapeutics, Joint Research Center for Human Retrovirus Infection, Kagoshima University, Kagoshima 890-8544, Japan
| | - Hidekatsu Iha
- Division of Pathophysiology, The Research Center for GLOBAL and LOCAL Infectious Diseases (RCGLID), Oita University, Yufu 879-5503, Japan
| | - Kazuya Shimoda
- Division of Hematology, Diabetes, and Endocrinology, Department of Internal Medicine, Faculty of Medicine, University of Miyazaki, Miyazaki 889-1692, Japan
| | - Takashi Murakami
- Department of Microbiology, Saitama Medical University, 38 Morohongo, Moroyama, Iruma-gun, Saitama 350-0495, Japan
| | - Kazuhiro Morishita
- Division of Tumor and Cellular Biochemistry, Department of Medical Sciences, University of Miyazaki, Miyazaki 889-1692, Japan
- Project for Advanced Medical Research and Development, Project Research Division, Frontier Science Research Center, University of Miyazaki, Miyazaki 889-1692, Japan
| |
Collapse
|
8
|
Liu M, Chen J, Sun M, Zhang L, Yu Y, Mi W, Ma Y, Wang G. Protection of Ndrg2 deficiency on renal ischemia-reperfusion injury via activating PINK1/Parkin-mediated mitophagy. Chin Med J (Engl) 2024:00029330-990000000-00971. [PMID: 38407220 DOI: 10.1097/cm9.0000000000002957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2023] [Indexed: 02/27/2024] Open
Abstract
BACKGROUND Renal ischemia-reperfusion (R-I/R) injury is the most prevalent cause of acute kidney injury, with high mortality and poor prognosis. However, the underlying pathological mechanisms are not yet fully understood. Therefore, this study aimed to investigate the role of N-myc downstream-regulated gene 2 (Ndrg2) in R-I/R injury. METHODS We examined the expression of Ndrg2 in the kidney under normal physiological conditions and after R-I/R injury by immunofluorescence staining, real-time polymerase chain reaction, and western blotting. We then detected R-I/R injury in Ndrg2-deficient (Ndrg2-/-) mice and wild type (Ndrg2+/+) littermates in vivo, and detected oxygen and glucose deprivation and reperfusion injury (OGD-R) in HK-2 cells. We further conducted transcriptomic sequencing to investigate the role of Ndrg2 in R-I/R injury and detected levels of oxidative stress and mitochondrial damage by dihydroethidium staining, biochemical assays, and western blot. Finally, we measured the levels of mitophagy in Ndrg2+/+ and Ndrg2-/- mice after R-I/R injury or HK-2 cells in OGD-R injury. RESULTS We found that Ndrg2 was primarily expressed in renal proximal tubules and significantly decreased its expression 24 h after R-I/R injury. Ndrg2-/- mice exhibited significantly attenuated R-I/R injury compared to Ndrg2+/+ mice. Transcriptomics profiling showed that Ndrg2 deficiency induced perturbations of multiple signaling pathways, downregulated inflammatory responses and oxidative stress, and increased autophagy following R-I/R injury. Further studies revealed that Ndrg2 deficiency reduced oxidative stress and mitochondrial damage. Notably, Ndrg2 deficiency significantly activated phosphatase and tensin homologue on chromosome ten-induced putative kinase 1 (PINK1)/Parkin-mediated mitophagy. The downregulation of NDRG2 expression significantly increased cell viability after OGD-R injury, increased the expression of heme oxygenase-1, decreased the expression of nicotinamide adenine dinucleotide phosphate oxidase 4, and increased the expression of the PINK1/Parkin pathway. CONCLUSION Ndrg2 deficiency might become a therapy target for R-I/R injury by decreasing oxidative stress, maintaining mitochondrial homeostasis, and activating PINK1/Parkin-mediated mitophagy.
Collapse
Affiliation(s)
- Min Liu
- Department of Anesthesiology, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - Jianwen Chen
- Department of Nephrology, The First Medical Center of Chinese PLA General Hospital, Nephrology Institute of the Chinese People's Liberation Army, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing Key Laboratory of Kidney Disease Research, Beijing 100853, China
| | - Miao Sun
- Department of Anesthesiology, The First Affiliated Hospital, Jinzhou Medical University, Jinzhou, Liaoning 121000, China
| | - Lixia Zhang
- Department of Burn and Plastic Surgery, The Fourth Medical Center of Chinese PLA General Hospital, Beijing 100048, China
| | - Yao Yu
- Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, China
| | - Weidong Mi
- Department of Anesthesiology, Chinese PLA General Hospital, Beijing 100853, China
| | - Yulong Ma
- Department of Anesthesiology, The First Medical Center of Chinese PLA General Hospital, Beijing 100853, China
| | - Guyan Wang
- Department of Anesthesiology, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| |
Collapse
|
9
|
Furuhashi T, Matsumoto Y, Ishii R, Sugasawa T, Ota S. Hypoxia and lactate influence VOC production in A549 lung cancer cells. Front Mol Biosci 2023; 10:1274298. [PMID: 37808517 PMCID: PMC10552298 DOI: 10.3389/fmolb.2023.1274298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 09/11/2023] [Indexed: 10/10/2023] Open
Abstract
Introduction: Cancer cells emit characteristic volatile organic compounds (VOCs), which are potentially generated from ROS-based lipid peroxidation of polyunsaturated fatty acids. The metabolism of such VOCs and their regulation remain to be fully investigated. In fact, the enzymes involved in the synthesis of these VOCs have not been described yet. Methods: In this study, we firstly conducted in vitro enzyme assays and demonstrated that recombinant alcohol dehydrogenase (ADH) converted Trans 2-hexenal into Trans 2-hexenol. The latter has previously been reported as a cancer VOC. To study VOC metabolism, 14 different culture conditions were compared in view of Trans 2-hexenol production. Results and discussion: The data indicate that hypoxia and the addition of lactate positively influenced Trans 2-hexenol production in A549 cancer cells. The RNAseq data suggested certain gene expressions in the VOC pathway and in lactate signaling, parallel to VOC production. This implies that hypoxia and lactate signaling with a VOC production can be characteristic for cancer in vitro.
Collapse
Affiliation(s)
| | | | - Ryuga Ishii
- Anicom Specialty Medical Institute Inc., Tokyo, Japan
| | - Takehito Sugasawa
- Laboratory of Clinical Examination/Sports Medicine, Division of Clinical Medicine, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan
| | | |
Collapse
|
10
|
Wang C, Wang X, Zheng H, Yao J, Xiang Y, Liu D. The ndrg2 Gene Regulates Hair Cell Morphogenesis and Auditory Function during Zebrafish Development. Int J Mol Sci 2023; 24:10002. [PMID: 37373150 PMCID: PMC10297845 DOI: 10.3390/ijms241210002] [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: 04/27/2023] [Revised: 05/30/2023] [Accepted: 06/05/2023] [Indexed: 06/29/2023] Open
Abstract
Damages of sensory hair cells (HCs) are mainly responsible for sensorineural hearing loss, however, its pathological mechanism is not yet fully understood due to the fact that many potential deafness genes remain unidentified. N-myc downstream-regulated gene 2 (ndrg2) is commonly regarded as a tumor suppressor and a cell stress-responsive gene extensively involved in cell proliferation, differentiation, apoptosis and invasion, while its roles in zebrafish HC morphogenesis and hearing remains unclear. Results of this study suggested that ndrg2 was highly expressed in the HCs of the otic vesicle and neuromasts via in situ hybridization and single-cell RNA sequencing. Ndrg2 loss-of-function larvae showed decreased crista HCs, shortened cilia, and reduced neuromasts and functional HCs, which could be rescued by the microinjection of ndrg2 mRNA. Moreover, ndrg2 deficiency induced attenuated startle response behaviors to sound vibration stimuli. Mechanistically, there were no detectable HC apoptosis and supporting cell changes in the ndrg2 mutants, and HCs were capable of recovering by blocking the Notch signaling pathway, suggesting that ndrg2 was implicated in HC differentiation mediated by Notch. Overall, our study demonstrates that ndrg2 plays crucial roles in HC development and auditory sensory function utilizing the zebrafish model, which provides new insights into the identification of potential deafness genes and regulation mechanism of HC development.
Collapse
Affiliation(s)
- Cheng Wang
- Nantong Laboratory of Development and Diseases, School of Life Sciences, Co-Innovation Center of Neuroregeneration, Nantong University, Nantong 226001, China; (C.W.); (J.Y.); (Y.X.)
| | - Xin Wang
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Nantong University, Nantong 226001, China;
| | - Hao Zheng
- School of Medicine, Nantong University, Nantong 226001, China;
| | - Jia Yao
- Nantong Laboratory of Development and Diseases, School of Life Sciences, Co-Innovation Center of Neuroregeneration, Nantong University, Nantong 226001, China; (C.W.); (J.Y.); (Y.X.)
| | - Yuqing Xiang
- Nantong Laboratory of Development and Diseases, School of Life Sciences, Co-Innovation Center of Neuroregeneration, Nantong University, Nantong 226001, China; (C.W.); (J.Y.); (Y.X.)
| | - Dong Liu
- Nantong Laboratory of Development and Diseases, School of Life Sciences, Co-Innovation Center of Neuroregeneration, Nantong University, Nantong 226001, China; (C.W.); (J.Y.); (Y.X.)
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Nantong University, Nantong 226001, China;
| |
Collapse
|
11
|
Guan R, Mei J, Guo R. Analysis of the Prognosis Prediction Ability of a Necroptosis-Related Gene Signature and its Relationship With the Hepatocellular Carcinoma Immune Microenvironment Using Bioinformatics Analysis and Experimental Validation. Technol Cancer Res Treat 2023; 22:15330338231182208. [PMID: 37335078 DOI: 10.1177/15330338231182208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/21/2023] Open
Abstract
Background: Hepatocellular carcinoma (HCC) is one of the most malignant cancers and has a poor prognosis. The immune microenvironment is closely related to the drug sensitivity of a tumor. Necroptosis was reported to be a key factor for HCC. The prognostic value of necroptosis-related genes and their association with the tumor immune microenvironment are still unknown. Methods: Necroptosis-related genes that could comprise a signature for predicting the prognosis of HCC cases were identified using univariate analysis and least absolute shrinkage and selection operator Cox regression analysis. The association between this prognosis prediction signature and HCC immune microenvironment was analyzed. The immunological activities and drug sensitivities were compared between different risk score groups identified using the prognosis prediction signature. The expression levels of the five genes comprising the signature were validated using RT-qPCR. Results: A prognosis prediction signature consisting of five necroptosis-related genes was constructed and validated. Its risk score was = (0.1634 × PGAM5 expression) + (0.0134 × CXCL1 expression) - (0.1007 × ALDH2 expression) + (0.2351 × EZH2 expression) - (0.0564 × NDRG2 expression). The signature was found to be significantly associated with the infiltration of B cells, CD4+ T cells, neutrophils, macrophages, and myeloid dendritic cells into the HCC immune microenvironment. The number of infiltrating immune cells and the expression levels of immune checkpoints in the immune microenvironment of high-risk score patients were higher. Sorafenib and immune checkpoint blockade were determined to be ideally suited for treating high-risk score patients and low-risk score patients, respectively. Finally, RT-qPCR results confirmed that the expression levels of EZH2, NDRG2, and ALDH2 were significantly down-regulated in HuH7 and HepG2 cells compared to those in LO2 cells. Conclusion: The necroptosis-related gene signature developed herein can classify patients with HCC according to prognosis risk well and is associated with infiltration of immune cells into the tumor immune microenvironment.
Collapse
Affiliation(s)
- Renguo Guan
- Department of Liver Surgery, Sun Yat-sen University Cancer Center, Guangzhou, China
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Jie Mei
- Department of Liver Surgery, Sun Yat-sen University Cancer Center, Guangzhou, China
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Rongping Guo
- Department of Liver Surgery, Sun Yat-sen University Cancer Center, Guangzhou, China
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| |
Collapse
|
12
|
Xiang H, Shen X, Chen E, Chen W, Song Z. Construction and validation of a novel algorithm based on oncosis-related lncRNAs comprising the immune landscape and prediction of colorectal cancer prognosis. Oncol Lett 2022; 25:63. [PMID: 36644148 PMCID: PMC9827452 DOI: 10.3892/ol.2022.13650] [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: 07/20/2022] [Accepted: 12/01/2022] [Indexed: 12/25/2022] Open
Abstract
Colorectal cancer (CRC) has high morbidity and mortality, particularly if diagnosed at an advanced stage. Although there have been several studies on CRC, few have investigated the relationship between oncosis and CRC. Thus, the purpose of the present study was to identify oncosis-related long noncoding RNAs (lncRNAs) and to establish a clinical prognostic model. Original data were acquired from The Cancer Genome Atlas database and PubMed. Differentially expressed oncosis-related lncRNAs (DEorlncRNAs) were identified and were subsequently formed into pairs. Next, a series of tests and analyses, including both univariate and multivariate analyses, as well as Lasso and Cox regression analyses, were performed to establish a receiver operating characteristic curve. A cut-off point was subsequently used to divide the samples into groups labelled as high- or low-risk. Thus, a model was established and evaluated in several dimensions. Six pairs of DEorlncRNAs associated with prognosis according to the algorithm were screened out and the CRC cases were divided into high- and low-risk groups. Significant differences between patients in the different risk groups were observed for several traits, including survival outcomes, clinical pathology characteristics, immune cell infiltration status and drug sensitivity. In addition, PCR and flow cytometry were performed to further verify the model. In summary, a new risk model algorithm based on six pairs of DEorlncRNAs in CRC, which does not require specific data regarding the level of gene expression, was established and validated. This algorithm may be used to predict patient prognosis, immune cell infiltration and drug sensitivity.
Collapse
Affiliation(s)
- Haoyi Xiang
- Department of Colorectal Surgery, Sir Run Run Shaw Hospital of Zhejiang University, Hangzhou, Zhejiang 310016, P.R. China,Zhejiang University School of Medicine, Hangzhou, Zhejiang 310011, P.R. China
| | - Xuning Shen
- Department of Colorectal Surgery, Sir Run Run Shaw Hospital of Zhejiang University, Hangzhou, Zhejiang 310016, P.R. China,Zhejiang University School of Medicine, Hangzhou, Zhejiang 310011, P.R. China
| | - Engeng Chen
- Department of Colorectal Surgery, Sir Run Run Shaw Hospital of Zhejiang University, Hangzhou, Zhejiang 310016, P.R. China
| | - Wei Chen
- Cancer Institute of Integrated Traditional Chinese and Western Medicine, Zhejiang Academy of Traditional Chinese Medicine, Tongde Hospital of Zhejiang Province, Hangzhou, Zhejiang 310012, P.R. China,Professor Wei Chen, Cancer Institute of Integrated Traditional Chinese and Western Medicine, Zhejiang Academy of Traditional Chinese Medicine, Tongde Hospital of Zhejiang Province, 234 Gucui Road, Hangzhou, Zhejiang 310012, P.R. China, E-mail:
| | - Zhangfa Song
- Department of Colorectal Surgery, Sir Run Run Shaw Hospital of Zhejiang University, Hangzhou, Zhejiang 310016, P.R. China,Correspondence to: Professor Zhangfa Song, Department of Colorectal Surgery, Sir Run Run Shaw Hospital of Zhejiang University, 3 Qingchun East Road, Hangzhou, Zhejiang 310016, P.R. China, E-mail:
| |
Collapse
|
13
|
Astrocytes in Chronic Pain: Cellular and Molecular Mechanisms. Neurosci Bull 2022; 39:425-439. [PMID: 36376699 PMCID: PMC10043112 DOI: 10.1007/s12264-022-00961-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Accepted: 06/17/2022] [Indexed: 11/15/2022] Open
Abstract
AbstractChronic pain is challenging to treat due to the limited therapeutic options and adverse side-effects of therapies. Astrocytes are the most abundant glial cells in the central nervous system and play important roles in different pathological conditions, including chronic pain. Astrocytes regulate nociceptive synaptic transmission and network function via neuron–glia and glia–glia interactions to exaggerate pain signals under chronic pain conditions. It is also becoming clear that astrocytes play active roles in brain regions important for the emotional and memory-related aspects of chronic pain. Therefore, this review presents our current understanding of the roles of astrocytes in chronic pain, how they regulate nociceptive responses, and their cellular and molecular mechanisms of action.
Collapse
|
14
|
Xu C, Liu Z, Yan C, Xiao J. Application of apoptosis-related genes in a multiomics-related prognostic model study of gastric cancer. Front Genet 2022; 13:901200. [PMID: 35991578 PMCID: PMC9389051 DOI: 10.3389/fgene.2022.901200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Accepted: 07/12/2022] [Indexed: 12/24/2022] Open
Abstract
Gastric cancer (GC) is one of the most common tumors in the world, and apoptosis is closely associated with GC. A number of therapeutic methods have been implemented to increase the survival in GC patients, but the outcomes remain unsatisfactory. Apoptosis is a highly conserved form of cell death, but aberrant regulation of the process also leads to a variety of major human diseases. As variations of apoptotic genes may increase susceptibility to gastric cancer. Thus, it is critical to identify novel and potent tools to predict the overall survival (OS) and treatment efficacy of GC. The expression profiles and clinical characteristics of TCGA-STAD and GSE15459 cohorts were downloaded from TCGA and GEO. Apoptotic genes were extracted from the GeneCards database. Apoptosis risk scores were constructed by combining Cox regression and LASSO regression. The GSE15459 and TCGA internal validation sets were used for external validation. Moreover, we explored the relationship between the apoptosis risk score and clinical characteristics, drug sensitivity, tumor microenvironment (TME) and tumor mutational burden (TMB). Finally, we used GSVA to further explore the signaling pathways associated with apoptosis risk. By performing TCGA-STAD differential analysis, we obtained 839 differentially expressed genes, which were then analyzed by Cox regressions and LASSO regression to establish 23 genes associated with apoptosis risk scores. We used the test validation cohort from TCGA-STAD and the GSE15459 dataset for external validation. The AUC values of the ROC curve for 2-, 3-, and 5-years survival were 0.7, 0.71, and 0.71 in the internal validation cohort from TCGA-STAD and 0.77, 0.74, and 0.75 in the GSE15459 dataset, respectively. We constructed a nomogram by combining the apoptosis risk signature and some clinical characteristics from TCGA-STAD. Analysis of apoptosis risk scores and clinical characteristics demonstrated notable differences in apoptosis risk scores between survival status, sex, grade, stage, and T stage. Finally, the apoptosis risk score was correlated with TME characteristics, drug sensitivity, TMB, and TIDE scores.
Collapse
Affiliation(s)
- Chengfei Xu
- Chengdu Medical College, Chengdu, China
- School of Clinical Medicine, Chengdu Medical College, Chengdu, China
| | - Zilin Liu
- Chengdu Medical College, Chengdu, China
- School of Clinical Medicine, Chengdu Medical College, Chengdu, China
| | - Chuanjing Yan
- Chengdu Medical College, Chengdu, China
- School of Clinical Medicine, Chengdu Medical College, Chengdu, China
- *Correspondence: Chuanjing Yan, ; Jiangwei Xiao,
| | - Jiangwei Xiao
- Chengdu Medical College, Chengdu, China
- School of Clinical Medicine, Chengdu Medical College, Chengdu, China
- *Correspondence: Chuanjing Yan, ; Jiangwei Xiao,
| |
Collapse
|