1
|
Liu Y, Wang Q, Sun Z, Chen H, Yue L, Yang J, Li Z, Lv X, Zhou X. Investigating the Effects of AL049796.1 Silencing in Inhibiting High Glucose-Induced Colorectal Cancer Progression. DNA Cell Biol 2024; 43:401-413. [PMID: 38853745 DOI: 10.1089/dna.2024.0069] [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] [Indexed: 06/11/2024] Open
Abstract
Patients with colorectal cancer (CRC) and diabetes share many risk factors. Despite a strong association between diabetes and CRC being widely studied and confirmed, further genetic research is needed. This study found higher AL049796.1 and TEA domain transcription factor 1 (TEAD1) levels (both mRNA and protein) in CRC tissues of diabetic patients compared with nondiabetics, but no significant difference in miR-200b-3p levels. A positive correlation between AL049796.1 and TEAD1 protein existed regardless of diabetes status, whereas miR-200b-3p was only negatively correlated with TEAD1 protein in nondiabetic CRC tissues. In vitro experiments have shown that high glucose (HG) treatment increased AL049796.1 in CRC cells, and AL049796.1 silencing reduced HG-induced proliferation, migration and invasion, as well as connective tissue growth factor, cysteine-rich angiogenic inducer 61, and epidermal growth factor receptor protein expression. Mechanistic investigations indicated that AL049796.1 could mitigate suppression of miR-200b-3p on TEAD1 posttranscriptionally by acting as a competitive binder. In vivo, subcutaneous CRC tumors in streptozotocin (STZ)-induced mice grew significantly faster; AL049796.1 silencing did not affect the growth of subcutaneous CRC tumors but significantly reduced that of STZ-induced mice. Our study suggests that AL049796.1 independently contributes to the risk of CRC in diabetic patients, highlighting its potential as both a therapeutic target and a novel biomarker for CRC among individuals with diabetes.
Collapse
Affiliation(s)
- Yan Liu
- Department of General Surgery, First Affiliated Hospital of Soochow University, Suzhou, China
- Department of General Surgery, Affiliated Nantong Hospital of Shanghai University, The Sixth People's Hospital of Nantong, Nantong, China
| | - Qi Wang
- Department of General Surgery, Affiliated Nantong Hospital of Shanghai University, The Sixth People's Hospital of Nantong, Nantong, China
| | - Zicheng Sun
- Department of General Surgery, Affiliated Nantong Hospital of Shanghai University, The Sixth People's Hospital of Nantong, Nantong, China
| | - Haijun Chen
- Department of General Surgery, Affiliated Nantong Hospital of Shanghai University, The Sixth People's Hospital of Nantong, Nantong, China
| | - Luxiao Yue
- Department of Anatomy, Harbin Medical University, Harbin, China
| | - Jiachen Yang
- Department of Anatomy, Harbin Medical University, Harbin, China
| | - Zhe Li
- Department of Anatomy, Harbin Medical University, Harbin, China
| | - Xiaohong Lv
- Department of Anatomy, Harbin Medical University, Harbin, China
| | - Xiaojun Zhou
- Department of General Surgery, First Affiliated Hospital of Soochow University, Suzhou, China
| |
Collapse
|
2
|
Deng H, Wang Z, Zhu C, Chen Z. Prolyl hydroxylase domain enzyme PHD2 inhibits proliferation and metabolism in non-small cell lung cancer cells in HIF-dependent and HIF-independent manners. Front Oncol 2024; 14:1370393. [PMID: 39007099 PMCID: PMC11240288 DOI: 10.3389/fonc.2024.1370393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2024] [Accepted: 06/14/2024] [Indexed: 07/16/2024] Open
Abstract
Prolyl hydroxylase domain protein 2 (PHD2) is one of the intracellular oxygen sensors that mediates proteasomal degradation of hypoxia-inducible factor (HIF)-α via hydroxylation under normoxic conditions. Because of its canonical function in the hypoxia signaling pathway, PHD2 is generally regarded as a tumor suppressor. However, the effects of PHD2 in tumorigenesis are not entirely dependent on HIF-α. Based on analysis of data from the Cancer Genome Atlas (TCGA) database, we observed that the expression of PHD2 is upregulated in non-small cell lung cancer (NSCLC), which accounts for approximately 80-85% of lung cancers. This suggests that PHD2 may play an important role in NSCLC. However, the function of PHD2 in NSCLC remains largely unknown. In this study, we established PHD2-deficient H1299 cells and PHD2-knockdown A549 cells to investigate the function of PHD2 in NSCLC and found that PHD2 suppresses cell proliferation and metabolism but induces ROS levels in human NSCLC cells. Further results indicated that the function of PHD2 in NSCLC is dependent on its enzymatic activity and partially independent of HIF. Moreover, we performed RNA-sequencing and transcriptomic analysis to explore the underlying mechanisms and identified some potential targets and pathways regulated by PHD2, apart from the canonical HIF-mediated hypoxia signaling pathway. These results provide some clues to uncover novel roles of PHD2 in lung cancer progression.
Collapse
Affiliation(s)
- Hongyan Deng
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
- College of Life Science, Wuhan University, Wuhan, China
| | - Zixuan Wang
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
| | - Chunchun Zhu
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
| | - Zhu Chen
- Department of Reproduction, Maternal and Child Health Hospital of Hubei Province, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| |
Collapse
|
3
|
Sun W, Zhang X, Li N, He Y, Ji J, Zheng D. Genetic association of glycemic traits and antihyperglycemic agent target genes with the risk of lung cancer: A Mendelian randomization study. Diabetes Metab Syndr 2024; 18:103048. [PMID: 38850595 DOI: 10.1016/j.dsx.2024.103048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 05/18/2024] [Accepted: 05/29/2024] [Indexed: 06/10/2024]
Abstract
AIMS To evaluate the potential causal effect of glycemic traits on lung cancer and investigate the impact of antihyperglycemic agent-target genes on lung cancer risk. METHODS Genetic variants associated with glycemic traits, antihyperglycemic agent-target genes, and lung cancer were extracted from the Meta-Analyses of Glucose and Insulin-related traits Consortium (MAGIC), expression quantitative trait loci (eQTLs), protein quantitative trait loci (pQTLs), and the International Lung Cancer Consortium (ILCCO), respectively. Mendelian randomization (MR) analyses were performed to examine the associations of glycemic traits and antihyperglycemic agent-target genes with lung cancer. Mediation analysis was conducted to explore whether overweight operated as a mediator between antihyperglycemic agents and lung cancer outcomes. RESULTS Genetically determined glycated hemoglobin A1c levels were associated with squamous cell lung cancer (OR = 1.78; 95 % CI, 1.08-2.92; p = 0.023). The PRKAB1 gene (the target of metformin) was associated with a lower risk of developing lung adenocarcinoma (OR = 0.85; 95 % CI, 0.76-0.96; p = 0.006). Further mediation analyses did not support overweight as a mediator between PRKAB1 activation and lung adenocarcinoma. CONCLUSION Our analyses suggest an association of genetically determined abnormal glycemic traits with squamous cell lung cancer. The potential association between PRKAB1 activation and a reduced risk of developing lung adenocarcinoma appears to be independent of the anti-obesity effects of metformin, suggesting that PRKAB1 activation may have a direct protective effect on lung adenocarcinoma development.
Collapse
Affiliation(s)
- Wen Sun
- Department of Epidemiology and Health Statistics, School of Public Health, Capital Medical University, Beijing, China
| | - Xiaoyu Zhang
- Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong, China
| | - Ning Li
- Department of Epidemiology and Health Statistics, School of Public Health, Capital Medical University, Beijing, China
| | - Yan He
- Department of Epidemiology and Health Statistics, School of Public Health, Capital Medical University, Beijing, China.
| | - Jianguang Ji
- Center for Primary Health Care Research, Department of Clinical Sciences Malmö, Lund University, Sweden.
| | - Deqiang Zheng
- Department of Epidemiology and Health Statistics, School of Public Health, Capital Medical University, Beijing, China.
| |
Collapse
|
4
|
Biswas U, Roy R, Ghosh S, Chakrabarti G. The interplay between autophagy and apoptosis: its implication in lung cancer and therapeutics. Cancer Lett 2024; 585:216662. [PMID: 38309614 DOI: 10.1016/j.canlet.2024.216662] [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: 11/17/2023] [Revised: 01/02/2024] [Accepted: 01/17/2024] [Indexed: 02/05/2024]
Abstract
Maintaining cellular homeostasis relies on the interplay between apoptosis and autophagy, and disruption in either of these processes can contribute to the development of cancer. Autophagy can hinder the apoptotic process, and when autophagy is inhibited in such instances, it can enhance the rate of apoptosis. However, evidence suggests that excessive autophagy can also lead to apoptotic cell death. Also, excess autophagy can cause excessive digestion of cellular organelles, causing autophagic cell death. Targeting autophagy in non-small cell lung cancer (NSCLC), the most common form of lung cancer, can be very tricky due to the dual nature of autophagy. According to genetic analysis, various mutations in p53 and EGFR, G:C to A:T transversions seem responsible for the development of lung cancer in smokers and non-smokers. These events trigger cytoprotective autophagy or induce apoptotic cell death through different but interconnected signalling pathways. Lung cancer being the leading cause of death worldwide, calls for more attention to disease prognosis and new therapeutics in the market. However, molecules responsible for autophagy to apoptosis transition are yet to be studied elaborately. Also, the role of effector caspases during this shift needs to be elucidated in future. To comprehend how therapeutics operate through the modulation of autophagy and apoptosis and to target such pathways, it is crucial to emphasize these intricate connections. Many therapeutics discussed in this review targeting both apoptosis and autophagy have shown promising results in vitro and in vivo, however, few have crossed the hurdles of clinical trial. Nevertheless, the quest for safer and better efficacious agents is still alive, with the sole aim to develop novel cancer chemotherapeutic(s).
Collapse
Affiliation(s)
- Urmita Biswas
- Department of Biotechnology and Dr. B. C. Guha Centre for Genetic Engineering and Biotechnology, University of Calcutta, 35 Ballygunge Circular Road, Kolkata, West Bengal, India
| | - Ranita Roy
- Department of Biotechnology and Dr. B. C. Guha Centre for Genetic Engineering and Biotechnology, University of Calcutta, 35 Ballygunge Circular Road, Kolkata, West Bengal, India
| | - Swarnasree Ghosh
- Department of Biotechnology and Dr. B. C. Guha Centre for Genetic Engineering and Biotechnology, University of Calcutta, 35 Ballygunge Circular Road, Kolkata, West Bengal, India
| | - Gopal Chakrabarti
- Department of Biotechnology and Dr. B. C. Guha Centre for Genetic Engineering and Biotechnology, University of Calcutta, 35 Ballygunge Circular Road, Kolkata, West Bengal, India.
| |
Collapse
|
5
|
Raafat SN, El Wahed SA, Badawi NM, Saber MM, Abdollah MR. Enhancing the anticancer potential of metformin: fabrication of efficient nanospanlastics, in vitro cytotoxic studies on HEP-2 cells and reactome enhanced pathway analysis. Int J Pharm X 2023; 6:100215. [PMID: 38024451 PMCID: PMC10630776 DOI: 10.1016/j.ijpx.2023.100215] [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: 05/14/2023] [Revised: 10/17/2023] [Accepted: 10/21/2023] [Indexed: 12/01/2023] Open
Abstract
Metformin (MET), an oral antidiabetic drug, was reported to possess promising anticancer effects. We hypothesized that MET encapsulation in unique nanospanlastics would enhance its anticancer potential against HEP-2 cells. Our results showed the successful fabrication of Nano-MET spanlastics (d = 232.10 ± 0.20 nm; PDI = 0.25 ± 0.11; zeta potential = (-) 44.50 ± 0.96; drug content = 99.90 ± 0.11 and entrapment efficiency = 88.01 ± 2.50%). MTT assay revealed the enhanced Nano-MET cytotoxicity over MET with a calculated IC50 of 50 μg/mL and > 500 μg/mL, respectively. Annexin V/PI apoptosis assay showed that Nano-MET significantly decreased the percentage of live cells from 95.49 to 93.70 compared to MET and increased the percentage of cells arrested in the G0/G1 phase by 8.38%. Moreover, Nano-MET downregulated BCL-2 and upregulated BAX protein levels by 1.57 and 1.88 folds, respectively. RT-qPCR revealed that Nano-MET caused a significant 13.75, 4.15, and 2.23-fold increase in caspase-3, -8, and - 9 levels as well as a 100 and 43.47-fold decrease in cyclin D1 and mTOR levels, respectively. The proliferation marker Ki67 immunofluorescent staining revealed a 3-fold decrease in positive cells in Nano-MET compared to the control. Utilizing the combined Pathway-Enrichment Analysis (PEA) and Reactome analysis indicated high enrichment of certain pathways including nucleotides metabolism, Nudix-type hydrolase enzymes, carbon dioxide hydration, hemostasis, and the innate immune system. In summary, our results confirm MET cytotoxicity enhancement by its encapsulation in nanospanlastics. We also highlight, using PEA, that MET can modulate multiple pathways implicated in carcinogenesis.
Collapse
Affiliation(s)
- Shereen Nader Raafat
- Department of Pharmacology, Faculty of Dentistry, The British University in Egypt, Cairo, Egypt
- Stem Cells and Tissue Culture Hub (CIDS), Faculty of Dentistry, The British University in Egypt, Cairo, Egypt
| | - Sara Abd El Wahed
- Department of Oral Pathology, Faculty of Dentistry, The British University in Egypt, Cairo, Egypt
| | - Noha M. Badawi
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, The British University in Egypt, Cairo, Egypt
- Center for Drug Research and Development (CDRD), Faculty of Pharmacy, The British University in Egypt, El Sherouk City, Egypt
| | - Mona M. Saber
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Giza, Egypt
| | - Maha R.A. Abdollah
- Center for Drug Research and Development (CDRD), Faculty of Pharmacy, The British University in Egypt, El Sherouk City, Egypt
- Department of Pharmacology, Faculty of Pharmacy, The British University in Egypt, Cairo, Egypt
| |
Collapse
|
6
|
Khilar P, Sruthi KK, Parveen SMA, Natani S, Jadav SS, Ummanni R. AMPK targets a proto-oncogene TPD52 (isoform 3) expression and its interaction with LKB1 suppress AMPK-GSK3β signaling axis in prostate cancer. J Cell Commun Signal 2023; 17:957-974. [PMID: 37040029 PMCID: PMC10409946 DOI: 10.1007/s12079-023-00745-y] [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: 08/22/2022] [Accepted: 03/26/2023] [Indexed: 04/12/2023] Open
Abstract
Tumor protein D52 (TPD52) is a proto-oncogene overexpressed in prostate cancer (PCa) due to gene amplification and it is involved in the cancer progression of many cancers including PCa. However, the molecular mechanisms underlying the role of TPD52 in cancer progression are still under investigation. In this study, we report that the activation of AMP-activated protein kinase (AMPK) by AICAR (5-Aminoimidazole-4-carboxamide ribonucleotide) inhibited the LNCaP and VCaP cells growth by silencing TPD52 expression. Activation of AMPK inhibited the proliferation and migration of LNCaP and VCaP cells. Interestingly, AICAR treatment to LNCaP and VCaP cells led to the downregulation of TPD52 via activation of GSK3β by a decrease of inactive phosphorylation at Ser9. Moreover, in AICAR treated LNCaP cells, inhibition of GSK3β by LiCl attenuated downregulation of TPD52 indicating that AICAR acts via GSK3β. Furthermore, we found that TPD52 interacts with serine/threonine kinase 11 or Liver kinase B1 (LKB1) a known tumor suppressor and an upstream kinase for AMPK. The molecular modeling and MD simulations indicates that the interaction between TPD52 and LKB1 leads to inhibition of the kinase activity of LKB1 as its auto-phosphorylation sites were masked in the complex. Consequently, TPD52-LKB1 interaction may lead to inactivation of AMPK. Moreover, overexpression of TPD52 is found to be responsible for the reduction of pLKB1 (Ser428) and pAMPK (Thr172). Therefore, TPD52 may be playing its oncogenic role via suppressing the AMPK activation. Altogether, our results revealed a new mechanism of PCa progression in which TPD52 overexpression inhibits AMPK activation by interacting with LKB1. These results support that the use of AMPK activators and/or small molecules that could disrupt the TPD52-LKB1 interaction might be useful to suppress PCa cell growth. TPD52 interacts LKB1 and interfere with activation of AMPK in PCa cells.
Collapse
Affiliation(s)
- Priyanka Khilar
- Department of Applied Biology, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - K K Sruthi
- Department of Applied Biology, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Sakkarai Mohamed Asha Parveen
- Department of Applied Biology, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Sirisha Natani
- Department of Applied Biology, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Surender Singh Jadav
- Department of Applied Biology, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Ramesh Ummanni
- Department of Applied Biology, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India.
| |
Collapse
|
7
|
Deng Y, Cheng H, Li J, Han H, Qi M, Wang N, Tan B, Li J, Wang J. Effects of glutamine, glutamate, and aspartate on intestinal barrier integrity and amino acid pool of the small intestine in piglets with normal or low energy diet. Front Vet Sci 2023; 10:1202369. [PMID: 37576837 PMCID: PMC10414990 DOI: 10.3389/fvets.2023.1202369] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2023] [Accepted: 07/03/2023] [Indexed: 08/15/2023] Open
Abstract
Aspartate (asp), glutamate (glu), and glutamine (gln) are the major energy fuels for the small intestine, and it had been indicated in our previous study that the mix of these three amino acid supplementations could maintain intestinal energy homeostasis. This study aimed to further investigate whether the treatment of gln, glu, and asp in low energy diet affects the intestinal barrier integrity and amino acid pool in weaning piglets. A total of 198 weaned piglets were assigned to 3 treatments: control (basal diet + 1.59% L-Ala); T1 (basal diet + 1% L-Gln + 0.5% L-Glu + 0.1% L-Asp); and T2 (low energy diet + 1% L-Gln + 0.5% L-Glu + 0.1% L-Asp). The blood, jejunum, and ileum were obtained on day 5 or on day 21 post-weaning, respectively. Our results showed that T1 and T2 treatments increased the abundances of occludin, claudin-1, and claudin-3 in the small intestine while decreasing the serum diamine oxidase (DAO) and D-lactate levels in weaning piglets. Meanwhile, T1 and T2 treatments significantly increased the positive rate of proliferating cell nuclear antigen (PCNA) of the small intestine, promoting intestinal cell proliferation. We also found that supplementation with glu, gln, and asp improved the serum amino acid pool and promoted ileal amino acid transporter gene expression of slc3a2, slc6a14, and slc7a11 in weaned piglets. Additionally, on day 21 post-weaning, T1 and T2 treatments stimulated the phosphorylation of the mTOR-S6K1-4EBP1 signaling pathway in the small intestine, which may implicate the enhanced protein synthesis rate. In summary, dietary supplementation of gln, glu, and asp was beneficial to the intestinal barrier function and amino acid pool regulation, while the benefits of gln, glu, and asp treatment might be diminished by the low-energy diet. The results demonstrated that the supplementation of gln, glu, and asp under low energy levels was preferentially supplied as the energy fuel to restore the gut barrier function in piglets on day 5 post-weaning. With the increase in age and intestinal maturation (on day 21 post-weaning), gln, glu, and asp supplementation could also show an effect on the regulation of the amino acid pool and protein synthesis.
Collapse
Affiliation(s)
- Yuankun Deng
- College of Animal Science and Technology, Hunan Agricultural University, Changsha, Hunan, China
| | - Hao Cheng
- College of Animal Science and Technology, Hunan Agricultural University, Changsha, Hunan, China
| | - Junyao Li
- College of Animal Science and Technology, Hunan Agricultural University, Changsha, Hunan, China
| | - Hui Han
- Laboratory of Animal Nutritional Physiology and Metabolic Process, Key Laboratory of Agroecological Processes in Subtropical Region, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan, China
| | - Ming Qi
- Laboratory of Animal Nutritional Physiology and Metabolic Process, Key Laboratory of Agroecological Processes in Subtropical Region, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan, China
| | - Nan Wang
- College of Animal Science and Technology, Hunan Agricultural University, Changsha, Hunan, China
| | - Bi'e Tan
- College of Animal Science and Technology, Hunan Agricultural University, Changsha, Hunan, China
| | - Jianjun Li
- Laboratory of Animal Nutritional Physiology and Metabolic Process, Key Laboratory of Agroecological Processes in Subtropical Region, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan, China
| | - Jing Wang
- College of Animal Science and Technology, Hunan Agricultural University, Changsha, Hunan, China
| |
Collapse
|
8
|
Verma S, Chitikela S, Singh V, Khurana S, Pushpam D, Jain D, Kumar S, Gupta Y, Malik PS. A phase II study of metformin plus pemetrexed and carboplatin in patients with non-squamous non-small cell lung cancer (METALUNG). Med Oncol 2023; 40:192. [PMID: 37261532 DOI: 10.1007/s12032-023-02057-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Accepted: 05/16/2023] [Indexed: 06/02/2023]
Abstract
Immune checkpoint inhibitors (ICIs) ± chemotherapy is the standard treatment for driver mutation-negative non-small cell lung cancer (NSCLC). However, accessibility to ICIs in LMICs is limited due to high cost, and platinum-based chemotherapy remains the mainstay of treatment. Metformin has anticancer properties, and studies suggest synergism between metformin and pemetrexed. Based on preclinical evidence, this combination may be more beneficial for STK11-mutated NSCLC, a subgroup, inherently resistant to ICIs. In this Simon two-stage, single-arm phase 2 trial, we investigated metformin with pemetrexed-carboplatin (PC) in patients with treatment-naive stage IV non-squamous NSCLC. The primary outcome was 6-month progression-free survival (PFS) rate. Secondary outcomes were safety, overall survival (OS), overall response rate (ORR), proportion of STK11 mutation, and effect of STK11 mutation on 6-month PFS rate. The study was terminated for futility after interim analysis. The median follow-up was 34.1 months. The 6-month PFS rate was 28% (95% CI 12.4-0.46). The median PFS and OS were 4.5 (95% CI 2.2-6.1) and 7.4 months (95% CI 5.3-15.3), respectively. The ORR was 72%. Gastrointestinal toxicities were the most common. No grade 4/5 toxicities were reported. Targeted sequencing was possible in nine cases. Two patients had STK11 mutation and a poor outcome (PFS < 12 weeks). We could not demonstrate the benefit of metformin with CP in terms of improvement in 6-month PFS rate; however, the combination was safe (CTRI/2019/02/017815).
Collapse
Affiliation(s)
- S Verma
- Department of Medical Oncology, All India Institute of Medical Sciences, New Delhi, India
| | - S Chitikela
- Department of Medical Oncology, All India Institute of Medical Sciences, New Delhi, India
| | - V Singh
- Department of Pathology, All India Institute of Medical Sciences, New Delhi, India
| | - S Khurana
- Department of Medical Oncology, All India Institute of Medical Sciences, New Delhi, India
| | - D Pushpam
- Department of Medical Oncology, All India Institute of Medical Sciences, New Delhi, India
| | - D Jain
- Department of Pathology, All India Institute of Medical Sciences, New Delhi, India
| | - S Kumar
- Department of Medical Oncology, All India Institute of Medical Sciences, New Delhi, India
| | - Y Gupta
- Department of Endocrinology, All India Institute of Medical Sciences, New Delhi, India
| | - P S Malik
- Department of Medical Oncology, All India Institute of Medical Sciences, New Delhi, India.
- Department of Medical Oncology, Dr.B.R.A.I.R.C.H., All India Institute of Medical Sciences, Room 245, New Delhi, India.
| |
Collapse
|
9
|
Rohilla S, Singh M, Alzarea SI, Almalki WH, Al-Abbasi FA, Kazmi I, Afzal O, Altamimi ASA, Singh SK, Chellappan DK, Dua K, Gupta G. Recent Developments and Challenges in Molecular-Targeted Therapy of Non-Small-Cell Lung Cancer. J Environ Pathol Toxicol Oncol 2023; 42:27-50. [PMID: 36734951 DOI: 10.1615/jenvironpatholtoxicoloncol.2022042983] [Citation(s) in RCA: 23] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Treatment of lung cancer with conventional therapies, which include radiation, surgery, and chemotherapy results in multiple undesirable adverse or side effects. The major clinical challenge in developing new drug therapies for lung cancer is resistance, which involves mutations and disturbance in various signaling pathways. Molecular abnormalities related to epidermal growth factor receptor (EGFR), v-Raf murine sarcoma viral oncogene homolog B1 (B-RAF) Kirsten rat sarcoma virus (KRAS) mutations, translocation of the anaplastic lymphoma kinase (ALK) gene, mesenchymal-epithelial transition factor (MET) amplification have been studied to overcome the resistance and to develop new therapies for non-small cell lung cancer (NSCLC). But, inevitable development of resistance presents limits the clinical benefits of various new drugs. Here, we review current progress in the development of molecularly targeted therapies, concerning six clinical biomarkers: EGFR, ALK, MET, ROS-1, KRAS, and B-RAF for NSCLC treatment.
Collapse
Affiliation(s)
- Suman Rohilla
- SGT College of Pharmacy, Shree Guru Gobind Singh Tricentenary University, Gurugram, 122505, India
| | - Mahaveer Singh
- Swami Keshvanand Institute of Pharmacy (SKIP), Raiser, Bikaner, 334803, India
| | - Sami I Alzarea
- Department of Pharmacology, College of Pharmacy, Jouf University, Sakaka 72341, Al-Jouf, Saudi Arabia
| | - Waleed Hassan Almalki
- Department of Pharmacology and Toxicology, College of Pharmacy, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Fahad A Al-Abbasi
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Imran Kazmi
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Obaid Afzal
- Department of Pharmaceutical Chemistry, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al Kharj, 11942, Saudi Arabia
| | | | - Sachin Kumar Singh
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, Punjab, 144411, India; Faculty of Health, Australian Research Centre in Complementary and Integrative Medicine, University of Technology Sydney, Ultimo NSW 2007, Australia
| | - Dinesh Kumar Chellappan
- Department of Life Sciences, School of Pharmacy, International Medical University (IMU), Bukit Jalil, Kuala Lumpur, 57000, Malaysia
| | - Kamal Dua
- Faculty of Health, Australian Research Centre in Complementary and Integrative Medicine, University of Technology Sydney, Ultimo NSW 2007, Australia; Woolcock Institute of Medical Research, University of Sydney, Sydney, NSW, Australia; Discipline of Pharmacy, Graduate School of Health, University of Technology Sydney, NSW 2007, Australia
| | - Gaurav Gupta
- Department of Pharmacology, Suresh GyanVihar University, Jagatpura, Jaipur, India; Department of Pharmacology, Saveetha Dental College and Hospitals, Saveetha Institute of Medical Sciences, Saveetha University, Chennai, India; Uttaranchal Institute of Pharmaceutical Sciences, Uttaranchal University, Dehradun, India
| |
Collapse
|
10
|
Ha J. SMAP: Similarity-based matrix factorization framework for inferring miRNA-disease association. Knowl Based Syst 2023. [DOI: 10.1016/j.knosys.2023.110295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
|
11
|
Nokhostin F, Azadehrah M, Azadehrah M. The multifaced role and therapeutic regulation of autophagy in ovarian cancer. Clin Transl Oncol 2022; 25:1207-1217. [PMID: 36534371 DOI: 10.1007/s12094-022-03045-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Accepted: 12/07/2022] [Indexed: 12/23/2022]
Abstract
Ovarian cancer (OC) is one of the tumors that occurs most frequently in women. Autophagy is involved in cell homeostasis, biomolecule recycling, and survival, making it a potential target for anti-tumor drugs. It is worth noting that growing evidence reveals a close link between autophagy and OC. In the context of OC, autophagy demonstrates activity as both a tumor suppressor and a tumor promoter, depending on the context. Autophagy's exact function in OC is greatly reliant on the tumor microenvironment (TME) and other conditions, such as hypoxia, nutritional deficiency, chemotherapy, and so on. However, what can be concluded from different studies is that autophagy-related signaling pathways, especially PI3K/AKT/mTOR axis, increase in advanced stages and malignant phenotype of the disease reduces autophagy and ultimately leads to tumor progression. This study sought to present a thorough understanding of the role of autophagy-related signaling pathways in OC and existing therapies targeting these signaling pathways.
Collapse
Affiliation(s)
- Fahimeh Nokhostin
- Department of Obstetrics and Gynecology, Faculty of Medicine, Shahid Sadughi University of Medical Sciences, Yazd, Iran
| | - Mahboobeh Azadehrah
- Cancer Research Center, Golestan University of Medical Sciences, Gorgan, Iran
| | - Malihe Azadehrah
- Cancer Research Center, Golestan University of Medical Sciences, Gorgan, Iran.
| |
Collapse
|
12
|
Fazil WFWM, Amanah A, Abduraman MA, Sulaiman SF, Wahab HA, Tan ML. The Effects of Deoxyelephantopin on the Akt/mTOR/P70S6K Signaling Pathway in MCF-7 Breast Carcinoma Cells In Vitro. J Pharmacol Pharmacother 2022. [DOI: 10.1177/0976500x221114003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Objective To determine the effects of deoxyelephantopin on mTOR and its related target molecules (Akt/mTOR/P70S6K) in the ER-positive breast cancer cell line. Materials and Methods Primary in silico simulations were determined, and the effects of deoxyelephantopin on the phosphorylation of the Akt/mTOR/P70S6K molecules were evaluated using AlphaScreen-based assays and western blot analysis, respectively. Results Based on the estimated FEB and K i values, deoxyelephantopin appeared to have a stronger affinity toward P70S6K as compared with Akt and mTOR. Both deoxyelephantopin and control inhibitors were observed to form hydrogen bonds with the same key residue, Leu175 of the P70S6K molecule. Deoxyelephantopin downregulated the p-P70S6K protein expression significantly from 18 µM ( P < .05) and onward. Based on the AlphaScreen assay, deoxyelephantopin produced a concentration-dependent inhibition on the phosphorylation of P70S6K with an IC50 value of 7.13 µM. Conclusion Deoxyelephantopin induced cell death in MCF-7 cells, possibly via DNA fragmentation, inhibition of the phosphorylation of P70SK6, and downregulation of the relative p-p70S6K protein expression levels.
Collapse
Affiliation(s)
- Wan Failiza Wan Mohamad Fazil
- Malaysian Institute of Pharmaceuticals and Nutraceuticals (IPharm), National Institutes of Biotechnology Malaysia (NIBM), Pulau Pinang, Malaysia
| | - Azimah Amanah
- Malaysian Institute of Pharmaceuticals and Nutraceuticals (IPharm), National Institutes of Biotechnology Malaysia (NIBM), Pulau Pinang, Malaysia
| | - Muhammad Asyraf Abduraman
- Advanced Medical and Dental Institute, Universiti Sains Malaysia, SAINS@BERTAM, Kepala Batas, Pulau Pinang, Malaysia
| | - Shaida Fariza Sulaiman
- Discipline of Clinical Pharmacy, School of Pharmaceutical Sciences, Universiti Sains Malaysia, Minden, Pulau Pinang, Malaysia
| | - Habibah Abdul Wahab
- Discipline of Clinical Pharmacy, School of Pharmaceutical Sciences, Universiti Sains Malaysia, Minden, Pulau Pinang, Malaysia
| | - Mei Lan Tan
- Malaysian Institute of Pharmaceuticals and Nutraceuticals (IPharm), National Institutes of Biotechnology Malaysia (NIBM), Pulau Pinang, Malaysia
- Advanced Medical and Dental Institute, Universiti Sains Malaysia, SAINS@BERTAM, Kepala Batas, Pulau Pinang, Malaysia
- Discipline of Clinical Pharmacy, School of Pharmaceutical Sciences, Universiti Sains Malaysia, Minden, Pulau Pinang, Malaysia
| |
Collapse
|
13
|
Pandit M, Timilshina M, Gu Y, Acharya S, Chung Y, Seo SU, Chang JH. AMPK suppresses Th2 cell responses by repressing mTORC2. Exp Mol Med 2022; 54:1214-1224. [PMID: 35999454 PMCID: PMC9440126 DOI: 10.1038/s12276-022-00832-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 05/18/2022] [Accepted: 06/14/2022] [Indexed: 06/15/2023] Open
Abstract
Allergic inflammation is a T helper 2 (Th2) cell-driven pathophysiological phenomenon, but the mechanism by which the metabolic cascade affects Th2 cell differentiation remains unclear. In this study, we investigated the roles of AMP-activated protein kinase (AMPK) and intracellular energy sensors in Th2 cell differentiation and the pathogenesis of allergic inflammation. Accordingly, T-cell-specific AMPK or Sirtuin 1 (Sirt1)-knockout mice were subjected to allergic inflammation, and their Th2 cell responses were investigated. The results demonstrated that inducing allergic inflammation in AMPK- and Sirt1-knockout mice increased Th2 cell responses and exacerbated allergic phenotypes. Furthermore, treatment with 5-aminoimidazole-4-carboxamide ribonucleotide (AICAR), an activator of AMPK, ameliorated allergic inflammation in mice. Mechanistically, our findings revealed that AMPK repressed mechanistic target of rapamycin complex 2 (mTORC2), which downregulated the expression of suppressor of cytokine signaling 5 (SOCS5) in CD4+ T cells. In addition, the loss of AMPK signaling reduced SOCS5 expression and increased interleukin-4-STAT6-GATA3 axis-mediated Th2 cell differentiation. Finally, the T-cell-specific deletion of Rictor, a member of mTORC2, in Sirt1T-KO mice led to the reversal of allergic exacerbation to the level in control mice. Overall, our findings suggest that AMPK in CD4+ T cells inhibits the differentiation of Th2 cells by repressing mTORC2 and thus serves as a potential target for Th2 cell-associated diseases.
Collapse
Affiliation(s)
- Mahesh Pandit
- College of Pharmacy, Yeungnam University, Gyeongsan, 38541, Republic of Korea
| | | | - Ye Gu
- College of Pharmacy, Yeungnam University, Gyeongsan, 38541, Republic of Korea
| | - Suman Acharya
- College of Pharmacy, Yeungnam University, Gyeongsan, 38541, Republic of Korea
| | - Yeonseok Chung
- Laboratory of Immune Regulation, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, 08826, Republic of Korea
| | - Sang-Uk Seo
- Department of Microbiology, College of Medicine, The Catholic University of Korea, Seoul, 06591, Republic of Korea.
| | - Jae-Hoon Chang
- College of Pharmacy, Yeungnam University, Gyeongsan, 38541, Republic of Korea.
| |
Collapse
|
14
|
Huynh TYL, Oscilowska I, Szoka L, Piktel E, Baszanowska W, Bielawska K, Bucki R, Miltyk W, Palka J. Metformin Induces PRODH/POX-Dependent Apoptosis in Breast Cancer Cells. Front Mol Biosci 2022; 9:869413. [PMID: 35733940 PMCID: PMC9207455 DOI: 10.3389/fmolb.2022.869413] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Accepted: 04/20/2022] [Indexed: 11/16/2022] Open
Abstract
Although the antineoplastic activity of metformin (MET) is well established, the underlying mechanism of the activity is not understood. Since MET activates AMP kinase (AMPK) and proline dehydrogenase/proline oxidase (PRODH/POX) is stimulated by AMPK ligands (implicated in the regulation of cancer cell survival/apoptosis), the effect of MET on PRODH/POX-dependent apoptosis in wild-type MCF-7 cells (MCF-7WT) and POX knockdown MCF-7 cells (MCF-7crPOX cells) was studied. PRODH/POX catalyzes proline degradation generating ROS-induced apoptosis or autophagy. Availability of proline for PRODH/POX functions is regulated by the activity of prolidase (enzyme releasing proline from imidodipeptides), collagen biosynthesis (process consuming proline), and metabolism of proline, ornithine, and glutamic acid. We have found that MET is cytotoxic for MCF-7 cells (IC50∼17 mM), and to the lower extent for MCF-7crPOX cells (IC50∼28 mM). In MCF-7WT cells, the effect was accompanied by the inhibition of DNA biosynthesis, collagen biosynthesis, stimulation of ROS formation, AMPKα phosphorylation, and expression of prolidase, p53, caspase 8, caspase 9, and cleaved PARP. In MET-treated MCF-7crPOX cells, the processes were less affected than in MCF-7WT cells and the expression of caspase 9 was decreased, while cleaved caspase 8 and cleaved PARP were not detected. The effects were accompanied by an increase in the prolidase activity and proline concentration. The mechanism for MET-induced apoptosis involves the up-regulation of prolidase activity and a decrease in collagen biosynthesis contributing to an increase in the concentration of substrate (proline) for PRODH/POX-dependent ROS formation and activation of caspases −9 and −8. The data suggest that PRODH/POX participates in the MET-induced intrinsic and extrinsic apoptosis in MCF-7 cells.
Collapse
Affiliation(s)
- Thi Yen Ly Huynh
- Department of Medicinal Chemistry, Faculty of Pharmacy, Medical University of Bialystok, Bialystok, Poland
| | - Ilona Oscilowska
- Department of Pharmaceutical and Biopharmaceutical Analysis, Faculty of Pharmacy, Medical University of Bialystok, Bialystok, Poland
| | - Lukasz Szoka
- Department of Medicinal Chemistry, Faculty of Pharmacy, Medical University of Bialystok, Bialystok, Poland
| | - Ewelina Piktel
- Department of Medical Microbiology and Nanobiomedical Engineering, Medical University of Bialystok, Bialystok, Poland
| | - Weronika Baszanowska
- Department of Medicinal Chemistry, Faculty of Pharmacy, Medical University of Bialystok, Bialystok, Poland
| | - Katarzyna Bielawska
- Department of Pharmaceutical and Biopharmaceutical Analysis, Faculty of Pharmacy, Medical University of Bialystok, Bialystok, Poland
| | - Robert Bucki
- Department of Medical Microbiology and Nanobiomedical Engineering, Medical University of Bialystok, Bialystok, Poland
| | - Wojciech Miltyk
- Department of Pharmaceutical and Biopharmaceutical Analysis, Faculty of Pharmacy, Medical University of Bialystok, Bialystok, Poland
| | - Jerzy Palka
- Department of Medicinal Chemistry, Faculty of Pharmacy, Medical University of Bialystok, Bialystok, Poland
- *Correspondence: Jerzy Palka,
| |
Collapse
|
15
|
Schaffrin-Nabe D, Schuster S, Tannapfel A, Voigtmann R. Case Report: Extensive Tumor Profiling in Primary Neuroendocrine Breast Cancer Cases as a Role Model for Personalized Treatment in Rare and Aggressive Cancer Types. Front Med (Lausanne) 2022; 9:841441. [PMID: 35721079 PMCID: PMC9203716 DOI: 10.3389/fmed.2022.841441] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 04/25/2022] [Indexed: 12/17/2022] Open
Abstract
Neuroendocrine breast cancer (NEBC) is a rare entity accounting for <0.1% of all breast carcinomas and <0.1% of all neuroendocrine carcinomas. In most cases treatment strategies in NEBC are empirical in absence of prospective trial data on NEBC cohorts. Herein, we present two case reports diagnosed with anaplastic and small cell NEBC. After initial therapies failed, comprehensive tumor profiling was applied, leading to individualized treatment options for both patients. In both patients, targetable alterations of the PI3K/AKT/mTOR pathway were found, including a PIK3CA mutation itself and an STK11 mutation that negatively regulates the mTOR complex. The epicrisis of the two patients exemplifies how to manage rare and difficult to treat cancers and how new diagnostic tools contribute to medical management.
Collapse
Affiliation(s)
- Dörthe Schaffrin-Nabe
- Praxis für Hämatologie und Onkologie, Bochum, Germany
- *Correspondence: Dörthe Schaffrin-Nabe
| | | | | | | |
Collapse
|
16
|
NSAIDs Induce Proline Dehydrogenase/Proline Oxidase-Dependent and Independent Apoptosis in MCF7 Breast Cancer Cells. Int J Mol Sci 2022; 23:ijms23073813. [PMID: 35409177 PMCID: PMC8998922 DOI: 10.3390/ijms23073813] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 03/11/2022] [Accepted: 03/28/2022] [Indexed: 02/06/2023] Open
Abstract
Non-steroidal anti-inflammatory drugs (NSAIDs) are considered in cancer therapy for their inhibitory effect on cyclooxygenase-2 (COX-2), which is overexpressed in most cancers. However, we found that NSAIDs as ligands of peroxisome proliferator-activated receptor-γ (PPARγ)-induced apoptosis independent of the COX-2 inhibition, and the process was mediated through activation of proline dehydrogenase/proline oxidase (PRODH/POX)-dependent generation of reactive oxygen species (ROS). This mitochondrial enzyme converts proline to ∆1-pyrroline-5-carboxylate (P5C) during which ATP or ROS is generated. To confirm the role of PRODH/POX in the mechanism of NSAID-induced apoptosis we obtained an MCF7 CRISPR/Cas9 PRODH/POX knockout breast cancer cell model (MCF7POK-KO). Interestingly, the studied NSAIDs (indomethacin and diclofenac) in MCF7POK-KO cells contributed to a more pronounced pro-apoptotic phenotype of the cells than in PRODH/POX-expressing MCF7 cells. The observed effect was independent of ROS generation, but it was related to the energetic disturbances in the cells as shown by an increase in the expression of AMPKα (sensor of cell energy status), GLUD1/2 (proline producing enzyme from glutamate), prolidase (proline releasing enzyme), PPARδ (growth supporting transcription factor) and a decrease in the expression of proline cycle enzymes (PYCR1, PYCRL), mammalian target of rapamycin (mTOR), and collagen biosynthesis (the main proline utilizing process). The data provide evidence that the studied NSAIDs induce PRODH/POX-dependent and independent apoptosis in MCF7 breast cancer cells.
Collapse
|
17
|
Rapaka D, Bitra VR, Challa SR, Adiukwu PC. mTOR signaling as a molecular target for the alleviation of Alzheimer's disease pathogenesis. Neurochem Int 2022; 155:105311. [PMID: 35218870 DOI: 10.1016/j.neuint.2022.105311] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 01/12/2022] [Accepted: 02/20/2022] [Indexed: 10/19/2022]
Abstract
Mechanistic/mammalian target of rapamycin (mTOR) belongs to the phosphatidylinositol kinase-related kinase (PIKK) family. mTOR signaling is required for the commencement of essential cell functions including autophagy. mTOR primarily governs cell growth in response to favourable nutrients and other growth stimuli. However, it also influences aging and other aspects of nutrient-related physiology such as protein synthesis, ribosome biogenesis, and cell proliferation in adults with very limited growth. The major processes for survival such as synaptic plasticity, memory storage and neuronal recovery involve a significant mTOR activity. mTOR dysregulation is becoming a prevalent motif in a variety of human diseases, including cancer, neurological disorders, and other metabolic syndromes. The use of rapamycin to prolong life in different animal models may be attributable to the multiple roles played by mTOR signaling in various processes involved in ageing, protein translation, autophagy, stem cell pool turnover, inflammation, and cellular senescence. mTOR activity was found to be altered in AD brains and rodent models, supporting the notion that aberrant mTOR activity is one of the key events contributing to the onset and progression of AD hallmarks This review assesses the molecular association between the mTOR signaling pathway and pathogenesis of Alzheimer's disease. The research data supporting this theme are also reviewed.
Collapse
Affiliation(s)
- Deepthi Rapaka
- A.U. College of Pharmaceutical Sciences, Andhra University, Visakhapatnam, 530003, India.
| | | | - Siva Reddy Challa
- Department of Cancer Biology and Pharmacology, University of Illinois College of Medicine, Peoria, IL, 61614, USA.
| | - Paul C Adiukwu
- School of Pharmacy, University of Botswana, Gaborone, 0022, Botswana.
| |
Collapse
|
18
|
Proline Dehydrogenase/Proline Oxidase (PRODH/POX) Is Involved in the Mechanism of Metformin-Induced Apoptosis in C32 Melanoma Cell Line. Int J Mol Sci 2022; 23:ijms23042354. [PMID: 35216470 PMCID: PMC8876342 DOI: 10.3390/ijms23042354] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 02/18/2022] [Accepted: 02/19/2022] [Indexed: 12/15/2022] Open
Abstract
The role of proline dehydrogenase/proline oxidase (PRODH/POX) in the mechanism of antineoplastic activity of metformin (MET) was studied in C32 melanoma cells. PRODH/POX is a mitochondrial enzyme-degrading proline that is implicated in the regulation of cancer cell survival/apoptosis. The enzyme is activated by AMP kinase (AMPK). It has been found that MET induced a significant decrease in cell viability and DNA biosynthesis accompanied by an increase in the expressions of AMPK and PRODH/POX in C32 cells. The mechanism for MET-dependent cytotoxicity on C32 cells was found at the level of PRODH/POX-induced ROS generation and activation of Caspase-3 and Caspase-9 expressions in these cells. The effects were not observed in MET-treated PRODH/POX knock-out C32 cells. Of interest is an MET-dependent increase in the concentration of proline, which is a substrate for PRODH/POX. This phenomenon is due to the MET-dependent inhibition of collagen biosynthesis, which is the main proline-utilizing process. It has been found that the underlying mechanism of anticancer activity of MET involves the activation of AMPK, PRODH/POX, increase in the cytoplasmic concentration of proline, inhibition of collagen biosynthesis, and stimulation of PRODH/POX-dependent ROS generation, which initiate the apoptosis of melanoma cells.
Collapse
|
19
|
Wang J, Gong M, Fan X, Huang D, Zhang J, Huang C. Autophagy-related signaling pathways in non-small cell lung cancer. Mol Cell Biochem 2022; 477:385-393. [PMID: 34757567 DOI: 10.1007/s11010-021-04280-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 10/15/2021] [Indexed: 12/25/2022]
Abstract
Lung cancer is one of the most prevalent causes of morbidity and mortality in both men and women across the globe. The disease has a quiet phenotype at first, which leads to chronic tumor development. Non-small cell lung cancer (NSCLC) is the most common kind of lung cancer, accounting for 85 percent of all lung malignancies. Autophagy has been described as an intracellular "recycle bin" where damaged proteins and molecules are degraded. Autophagy regulation is mainly dependent on signaling pathways such as phosphoinositide 3-kinases (PI3K), AKT, and the mammalian target of rapamycin (mTOR). In the context of NSCLC, studies on these signaling pathways are inconsistent, but our literature review suggests that the inhibition of mTOR, PI3K/AKT, and epidermal growth factor receptor signaling pathways by different medications can active autophagy and inhibit NSCLC progression. In conclusion, signaling pathways related to autophagy are effective therapeutic approaches for the treatment of NSCLC.
Collapse
Affiliation(s)
- Jing Wang
- Department of Cancer Center, Fujian Medical University Xiamen Humanity Hospital, Xiamen City, 361006, Fujian Province, China
| | - Mei Gong
- Department of Cancer Center, Fujian Medical University Xiamen Humanity Hospital, Xiamen City, 361006, Fujian Province, China
| | - Xirong Fan
- Department of Cancer Center, Fujian Medical University Xiamen Humanity Hospital, Xiamen City, 361006, Fujian Province, China
| | - Dalu Huang
- Department of Cancer Center, Fujian Medical University Xiamen Humanity Hospital, Xiamen City, 361006, Fujian Province, China
| | - Jinshu Zhang
- Department of Cancer Center, Fujian Medical University Xiamen Humanity Hospital, Xiamen City, 361006, Fujian Province, China
| | - Cheng Huang
- Department of Cancer Center, Fujian Medical University Xiamen Humanity Hospital, Xiamen City, 361006, Fujian Province, China.
| |
Collapse
|
20
|
Li Y, Liu Y, Jin K, Dong R, Gao C, Si L, Feng Z, Zhang H, Tian H. Negatively Regulated by miR-29c-3p, MTFR1 Promotes the Progression and Glycolysis in Lung Adenocarcinoma via the AMPK/mTOR Signalling Pathway. Front Cell Dev Biol 2021; 9:771824. [PMID: 34926459 PMCID: PMC8672271 DOI: 10.3389/fcell.2021.771824] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Accepted: 11/18/2021] [Indexed: 12/25/2022] Open
Abstract
Background: Lung adenocarcinoma (LUAD) is the major form of lung cancer that presents a major peril to public health. Owing to the high rates of morbidity, mortality and chemoresistance, it is necessary to develop more effective therapeutic targets of LUAD. Mitochondrial fission regulator 1 (MTFR1) affects the occurrence and development of some diseases by regulating mitochondrial dynamics and is dysregulated in LUAD. However, the functions and molecular mechanisms of MTFR1 in LUAD have not been investigated. Methods: Immunohistochemical (IHC) analysis, real-time quantitative polymerase chain reaction (RT-qPCR), bioinformatic analysis and western blot (WB) were performed to assess the expression of MTFR1 at both protein and mRNA levels. The biological functions of MTFR1 in LUAD cells were assessed based on various in vivo and in vitro experiments. The dual-luciferase reporter assay and some rescue experiments were performed to evaluate the underlying mechanism of MTFR1 in LUAD. Results: MTFR1 was upregulated in LUAD cells and tissues and correlated with dismal clinicopathologic features and a worse prognosis of patients with LUAD. Functionally, MTFR1 overexpression stimulated the proliferation, invasion, migration and glycolytic capacity and impeded the apoptosis of LUAD cells; however, opposite results were obtained when MTFR1 expression was knocked down. MTFR1, which was directly targeted by miR-29c-3p, may exert its biological functions through the AMPK/mTOR signalling pathway. Conclusion: MTFR1 promotes the progression of LUAD. Therefore, targeting MTFR1 can offer an effective therapeutic strategy for LUAD treatment.
Collapse
Affiliation(s)
- Yongmeng Li
- Department of Thoracic Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Yanfei Liu
- Department of Anesthesiology, Qilu Children's Hospital of Shandong University, Jinan, China
| | - Kai Jin
- Department of Thoracic Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Rui Dong
- Department of Thoracic Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Cun Gao
- Department of Thoracic Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Libo Si
- Department of Thoracic Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Zitong Feng
- Department of Thoracic Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Huiying Zhang
- Department of Thoracic Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Hui Tian
- Department of Thoracic Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| |
Collapse
|
21
|
Metformin Treatment or PRODH/POX-Knock out Similarly Induces Apoptosis by Reprograming of Amino Acid Metabolism, TCA, Urea Cycle and Pentose Phosphate Pathway in MCF-7 Breast Cancer Cells. Biomolecules 2021; 11:biom11121888. [PMID: 34944532 PMCID: PMC8699520 DOI: 10.3390/biom11121888] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 12/13/2021] [Accepted: 12/13/2021] [Indexed: 12/17/2022] Open
Abstract
It has been considered that proline dehydrogenase/proline oxidase (PRODH/POX) is involved in antineoplastic activity of metformin (MET). The aim of this study is identification of key metabolites of glycolysis, pentose phosphate pathway (PPP), tricarboxylic acids (TCA), urea cycles (UC) and some amino acids in MET-treated MCF-7 cells and PRODH/POX-knocked out MCF-7 (MCF-7crPOX) cells. MCF-7crPOX cells were generated by using CRISPR-Cas9. Targeted metabolomics was performed by LC-MS/MS/QqQ. Expression of pro-apoptotic proteins was evaluated by Western blot. In the absence of glutamine, MET treatment or PRODH/POX-knock out of MCF-7 cells contributed to similar inhibition of glycolysis (drastic increase in intracellular glucose and pyruvate) and increase in the utilization of phospho-enol-pyruvic acid, glucose-6-phosphate and some metabolites of TCA and UC, contributing to apoptosis. However, in the presence of glutamine, MET treatment or PRODH/POX-knock out of MCF-7 cells contributed to utilization of some studied metabolites (except glucose), facilitating pro-survival phenotype of MCF-7 cells in these conditions. It suggests that MET treatment or PRODH/POX-knock out induce similar metabolic effects (glucose starvation) and glycolysis is tightly linked to glutamine metabolism in MCF-7 breast cancer cells. The data provide insight into mechanism of anticancer activity of MET as an approach to further studies on experimental breast cancer therapy.
Collapse
|
22
|
Kim JE, Kwon EY, Han Y. Allulose Attenuated Age-Associated Sarcopenia via Regulating IGF-1 and Myostatin in Aged Mice. Mol Nutr Food Res 2021; 66:e2100549. [PMID: 34710274 DOI: 10.1002/mnfr.202100549] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 09/29/2021] [Indexed: 12/25/2022]
Abstract
SCOPE Allulose is shown to increase the muscle weight in diet-induced obese mice. However, there are no studies on the effects of allulose in age-associated sarcopenia. This study aims to elucidate the mechanisms of action for allulose in age associated by analyzing the transcriptional patterns in aged mice. METHODS AND RESULTS The 48-week-old mice are fed with AIN-93diet containing allulose for 12 weeks. Allulose supplementation increases the muscle mass and grip strength in aged mice. Allulose increases the insulin-like growth factor 1 (IGF-1) and its downstream factor expressions which 40 are related protein synthesis, while inhibits the myostatin expression related protein degradation. In mRNA-seq analysis, allulose supplementation significantly decreases in Adiponectin, Adipsin, cell death inducing DFFA like effector (CIDEC), Haptoglobin, Neuroglobin, and stearoyl-CoA desaturase-1 (SCD1) and increases in cytokine-inducible SH2-containing protein (CISH) and ceramide synthase 1 (CerS1) that are regulate protein turn over in gastrocnemius. Also, allulose alleviates autophagy in muscle with regulated mammalian target of rapamycin (mTOR) signaling pathway and increases the anti-oxidant enzyme activity. CONCLUSION These findings suggest that allulose improves the age-associated sarcopenia with enhancing antioxidant properties by altering mRNA and protein expression.
Collapse
Affiliation(s)
- Ji-Eun Kim
- Department of Food Science and Nutrition, Kyungpook National University, 1370 San-Kyuk Dong, Puk-Ku, Daegu, 702-701, Republic of Korea.,Center for Food and Nutritional Genomics Research, Kyungpook National University, 1370 San-Kyuk Dong, Puk-Ku, Daegu, 702-701, Republic of Korea.,Center for Beautiful Aging, Kyungpook National University, 1370 San-Kyuk Dong, Puk-Ku, Daegu, 702-701, Republic of Korea
| | - Eun-Young Kwon
- Department of Food Science and Nutrition, Kyungpook National University, 1370 San-Kyuk Dong, Puk-Ku, Daegu, 702-701, Republic of Korea.,Center for Food and Nutritional Genomics Research, Kyungpook National University, 1370 San-Kyuk Dong, Puk-Ku, Daegu, 702-701, Republic of Korea.,Center for Beautiful Aging, Kyungpook National University, 1370 San-Kyuk Dong, Puk-Ku, Daegu, 702-701, Republic of Korea
| | - Youngji Han
- Department of Food Science and Nutrition, Kyungpook National University, 1370 San-Kyuk Dong, Puk-Ku, Daegu, 702-701, Republic of Korea.,Center for Food and Nutritional Genomics Research, Kyungpook National University, 1370 San-Kyuk Dong, Puk-Ku, Daegu, 702-701, Republic of Korea.,Center for Beautiful Aging, Kyungpook National University, 1370 San-Kyuk Dong, Puk-Ku, Daegu, 702-701, Republic of Korea
| |
Collapse
|
23
|
Wang Z, Zhou C, Yang S. The roles, controversies, and combination therapies of autophagy in lung cancer. Cell Biol Int 2021; 46:3-11. [PMID: 34546599 DOI: 10.1002/cbin.11704] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 08/29/2021] [Accepted: 09/18/2021] [Indexed: 12/13/2022]
Abstract
Lung cancer is one of the leading causes of death among men and women worldwide. The disease initially has a silent phenotype, which leads to the progression of the disease and ultimately the lack of proper response to routine treatments. Autophagy, known as an intracellular "recycle bin" for the degradation of defective proteins and molecules, is one of the mechanisms that has been considered in the context of cancer in recent years. This study aims to provide a comprehensive review of published articles on autophagy in the context of lung cancer to have a complete view of the role of autophagy in lung cancer and its possible treatments. PubMed, Scopus, and Google Scholar were searched until June 15 to find related articles. No specific search filters or restrictions were applied. The results were entered into reference management software for aggregation and management. The full text of all articles was screened and studied. In conclusion, studies on the exact function of autophagy in lung cancer are contradictory, but what can be concluded from a review of literature on lung cancer is that targeting autophagy combined with traditional routine therapies such as chemotherapy, especially in advanced stages of lung cancer, can be an effective anticancer approach.
Collapse
Affiliation(s)
- Zijian Wang
- Department of Oncology, Shandong First Medical University and Shandong Academy of Medical Sciences, Shandong Cancer Hospital and Institute, Jinan, Shandong, China
| | - Chunyang Zhou
- Department of Oncology, Shandong First Medical University and Shandong Academy of Medical Sciences, Shandong Cancer Hospital and Institute, Jinan, Shandong, China.,Department of Clinical Medicine, Shandong University, Cheeloo College of Medicine, Jinan, Shandong, China
| | - Shengjie Yang
- Department of Phase I Clinical Trial Center, Capital Medical University, Beijing Shijitan Hospital, Beijing, China
| |
Collapse
|
24
|
Koenig MJ, Agana BA, Kaufman JM, Sharpnack MF, Wang WZ, Weigel C, Navarro FCP, Amann JM, Cacciato N, Arasada RR, Gerstein MB, Wysocki VH, Oakes C, Carbone DP. STK11/LKB1 Loss of Function Is Associated with Global DNA Hypomethylation and S-Adenosyl-Methionine Depletion in Human Lung Adenocarcinoma. Cancer Res 2021; 81:4194-4204. [PMID: 34045189 DOI: 10.1158/0008-5472.can-20-3199] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 04/14/2021] [Accepted: 05/24/2021] [Indexed: 11/16/2022]
Abstract
STK11 (liver kinase B1, LKB1) is the fourth most frequently mutated gene in lung adenocarcinoma, with loss of function observed in up to 30% of all cases. Our previous work identified a 16-gene signature for LKB1 loss of function through mutational and nonmutational mechanisms. In this study, we applied this genetic signature to The Cancer Genome Atlas (TCGA) lung adenocarcinoma samples and discovered a novel association between LKB1 loss and widespread DNA demethylation. LKB1-deficient tumors showed depletion of S-adenosyl-methionine (SAM-e), which is the primary substrate for DNMT1 activity. Lower methylation following LKB1 loss involved repetitive elements (RE) and altered RE transcription, as well as decreased sensitivity to azacytidine. Demethylated CpGs were enriched for FOXA family consensus binding sites, and nuclear expression, localization, and turnover of FOXA was dependent upon LKB1. Overall, these findings demonstrate that a large number of lung adenocarcinomas exhibit global hypomethylation driven by LKB1 loss, which has implications for both epigenetic therapy and immunotherapy in these cancers. SIGNIFICANCE: Lung adenocarcinomas with LKB1 loss demonstrate global genomic hypomethylation associated with depletion of SAM-e, reduced expression of DNMT1, and increased transcription of repetitive elements.
Collapse
Affiliation(s)
- Michael J Koenig
- Department of Internal Medicine, The Ohio State University, Columbus, Ohio.
| | - Bernice A Agana
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio
| | - Jacob M Kaufman
- Department of Medicine, Duke University, Durham, North Carolina
| | | | - Walter Z Wang
- Department of Internal Medicine, The Ohio State University, Columbus, Ohio
| | - Christoph Weigel
- Department of Internal Medicine, The Ohio State University, Columbus, Ohio
| | - Fabio C P Navarro
- Program in Computational Biology and Bioinformatics, Yale University, New Haven, Connecticut.,Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, Connecticut
| | - Joseph M Amann
- Department of Internal Medicine, The Ohio State University, Columbus, Ohio
| | - Nicole Cacciato
- Department of Internal Medicine, The Ohio State University, Columbus, Ohio
| | | | - Mark B Gerstein
- Program in Computational Biology and Bioinformatics, Yale University, New Haven, Connecticut.,Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, Connecticut.,Department of Computer Science, Yale University, New Haven, Connecticut
| | - Vicki H Wysocki
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio
| | - Christopher Oakes
- Department of Internal Medicine, The Ohio State University, Columbus, Ohio
| | - David P Carbone
- Department of Internal Medicine, The Ohio State University, Columbus, Ohio.
| |
Collapse
|
25
|
Li W, Liu S, Su S, Chen Y, Sun G. Construction and validation of a novel prognostic signature of microRNAs in lung adenocarcinoma. PeerJ 2021; 9:e10470. [PMID: 33510968 PMCID: PMC7798616 DOI: 10.7717/peerj.10470] [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: 10/21/2019] [Accepted: 11/11/2020] [Indexed: 11/20/2022] Open
Abstract
MicroRNA (miRNA, miR) has been reported to be highly implicated in a wide range of biological processes in lung cancer (LC), and identification of differentially expressed miRNAs between normal and LC samples has been widely used in the discovery of prognostic factors for overall survival (OS) and response to therapy. The present study was designed to develop and evaluate a miRNA-based signature with prognostic value for the OS of lung adenocarcinoma (LUAD), a common histologic subtype of LC. In brief, the miRNA expression profiles and clinicopathological factors of 499 LUAD patients were collected from The Cancer Genome Atlas (TCGA) database. Kaplan-Meier (K-M) survival analysis showed significant correlations between differentially expressed miRNAs and LUAD survival outcomes. Afterward, 1,000 resample LUAD training matrices based on the training set was applied to identify the potential prognostic miRNAs. The least absolute shrinkage and selection operator (LASSO) cox regression analysis was used to constructed a six-miRNA based prognostic signature for LUAD patients. Samples with different risk scores displayed distinct OS in K-M analysis, indicating considerable predictive accuracy of this signature in both training and validation sets. Furthermore, time-dependent receiver operating characteristic (ROC) analysis demonstrated the nomogram achieved higher predictive accuracy than any other clinical variables after incorporating the clinical information (age, sex, stage, and recurrence). In the stratification analysis, the prognostic value of this classifier in LUAD patients was validated to be independent of other clinicopathological variables, such as age, gender, tumor recurrence, and early stage. Gene set annotation analyses were also conducted through the Hallmark gene set and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways, indicating target genes of the six miRNAs were positively related to various molecular pathways of cancer, such as hallmark UV response, Wnt signaling pathway and mTOR signaling pathway. In addition, fresh cancer tissue samples and matched adjacent tissue samples from 12 LUAD patients were collected to verify the expression of miR-582's target genes in the model, further revealing the potential relationship between SOX9, RASA1, CEP55, MAP4K4 and LUAD tumorigenesis, and validating the predictive value of the model. Taken together, the present study identified a robust signature for the OS prediction of LUAD patients, which could potentially aid in the individualized selection of therapeutic approaches for LUAD patients.
Collapse
Affiliation(s)
- Wanzhen Li
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Shiqing Liu
- Department of Respiratory Medicine, National Key Clinical Specialty, Branch of National Clinical Research Center for Respiratory Disease, Xiangya Hospital, Central South University, Changsha, China.,Key cite of National Clinical Research Center for Respiratory Disease, Xiangya Hospital, Central South University, Changsha, China.,Xiangya Lung Cancer Center, Xiangya Hospital, Central South University, Changsha, China
| | - Shihong Su
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Yang Chen
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Gengyun Sun
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| |
Collapse
|
26
|
LSR promotes epithelial ovarian cancer cell survival under energy stress through the LKB1-AMPK pathway. Biochem Biophys Res Commun 2020; 537:93-99. [PMID: 33388415 DOI: 10.1016/j.bbrc.2020.12.079] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Revised: 12/14/2020] [Accepted: 12/22/2020] [Indexed: 10/22/2022]
Abstract
Lipolysis-stimulated lipoprotein receptor (LSR), also known as a component of tricellular tight junctions, is highly expressing in epithelial ovarian cancer (EOC). However, the biological role of LSR in EOC cells remains unclear. In this study, we evaluated liver kinase B1 (LKB1) mediated AMP-activated protein kinase (AMPK) activity and investigated the effect of LSR on EOC cell survival under energy stress. LSR increased the levels of phospho-AMPKα at Thr172 and phospho-acetyl-CoA carboxylase (ACC) at Ser79 via LKB1-AMPK pathway in glucose deprivation in vitro. The increase of P-AMPKα (Thr172) and P-ACC (Ser79) was also detected in tumor microenvironment in vivo. Meanwhile, LSR promoted LKB1 localization at the cell membrane of EOC cells. By cell survival analysis, LSR attenuated glucose deprivation-induced cell death in EOC cells in vitro. Our results suggest that LSR promotes EOC cell survival and tumor growth through the LKB1-AMPK pathway.
Collapse
|
27
|
Qiu YL, Zheng H, Devos A, Selby H, Gevaert O. A meta-learning approach for genomic survival analysis. Nat Commun 2020; 11:6350. [PMID: 33311484 PMCID: PMC7733508 DOI: 10.1038/s41467-020-20167-3] [Citation(s) in RCA: 17] [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: 04/23/2020] [Accepted: 11/16/2020] [Indexed: 02/07/2023] Open
Abstract
RNA sequencing has emerged as a promising approach in cancer prognosis as sequencing data becomes more easily and affordably accessible. However, it remains challenging to build good predictive models especially when the sample size is limited and the number of features is high, which is a common situation in biomedical settings. To address these limitations, we propose a meta-learning framework based on neural networks for survival analysis and evaluate it in a genomic cancer research setting. We demonstrate that, compared to regular transfer-learning, meta-learning is a significantly more effective paradigm to leverage high-dimensional data that is relevant but not directly related to the problem of interest. Specifically, meta-learning explicitly constructs a model, from abundant data of relevant tasks, to learn a new task with few samples effectively. For the application of predicting cancer survival outcome, we also show that the meta-learning framework with a few samples is able to achieve competitive performance with learning from scratch with a significantly larger number of samples. Finally, we demonstrate that the meta-learning model implicitly prioritizes genes based on their contribution to survival prediction and allows us to identify important pathways in cancer.
Collapse
Affiliation(s)
- Yeping Lina Qiu
- Department of Electrical Engineering, Stanford University, Stanford, USA
- Department of Medicine, Stanford Center for Biomedical Informatics Research, Stanford University, Stanford, USA
| | - Hong Zheng
- Department of Medicine, Stanford Center for Biomedical Informatics Research, Stanford University, Stanford, USA
| | - Arnout Devos
- School of Computer and Communication Sciences, Swiss Federal Institute of Technology Lausanne (EPFL), Lausanne, Switzerland
| | - Heather Selby
- Department of Medicine, Stanford Center for Biomedical Informatics Research, Stanford University, Stanford, USA
| | - Olivier Gevaert
- Department of Medicine, Stanford Center for Biomedical Informatics Research, Stanford University, Stanford, USA.
- Department of Biomedical Data Science, Stanford University, Stanford, USA.
| |
Collapse
|
28
|
Cui X, Wang X, Zhou X, Jia J, Chen H, Zhao W. miR-106a Regulates Cell Proliferation and Autophagy by Targeting LKB1 in HPV-16-Associated Cervical Cancer. Mol Cancer Res 2020; 18:1129-1141. [PMID: 32345599 DOI: 10.1158/1541-7786.mcr-19-1114] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2019] [Revised: 03/31/2020] [Accepted: 04/22/2020] [Indexed: 11/16/2022]
Abstract
miR-106a is aberrantly regulated in various tumors and plays an important role in carcinogenesis. However, the biological role and molecular mechanism by which miR-106a contributes to cervical squamous cell carcinoma (CSCC) remains elusive. In this study, we verified that miR-106a was elevated in both human papilloma virus (HPV) 16-positive CSCC tissues and cell lines. ROC curve analysis showed that miR-106a could well distinguish HPV-16-positive CSCC tissues from normal cervical squamous epithelium tissues. High expression of miR-106a was associated with malignant clinicopathologic parameters in CSCC tissues. Exogenous expression of miR-106a greatly promoted cervical cancer cell proliferation while attenuated autophagy. Furthermore, a novel target of miR-106a, liver kinase B1 (LKB1), a proven tumor suppressor in cervical cancer was verified. Here we confirmed LKB1 was negatively correlated with malignant clinicopathologic parameters in CSCC tissues. Overexpression of LKB1 neutralized the effect of miR-106a on proliferation and autophagy in cervical cancer cell lines. In addition, the role of miR-106a in cell proliferation and autophagy was via LKB1 and its downstream pathway AMP-activated protein kinase-mammalian target of rapamycin. Of note, miR-106a was upregulated by HPV-16 E7 protein. The function of HPV-16 E7 to cell proliferation was suppressed when knockdown miR-106a in HPV-16 E7-expressing cells. IMPLICATIONS: Our study highlights the tumorigenic role and regulatory mechanism of miR-106a in CSCC. miR-106a may be a potential therapeutic target in HPV-associated cervical cancer.
Collapse
Affiliation(s)
- Xiujie Cui
- Department of Microbiology, Key Laboratory of Infection and Immunity of Shandong Province, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, P.R. China
| | - Xiao Wang
- Department of Pathology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, P.R. China
| | - Xiaoqing Zhou
- Department of Microbiology, Key Laboratory of Infection and Immunity of Shandong Province, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, P.R. China
| | - Jihui Jia
- Department of Microbiology, Key Laboratory of Infection and Immunity of Shandong Province, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, P.R. China
| | - Hanxiang Chen
- Department of Microbiology, Key Laboratory of Infection and Immunity of Shandong Province, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, P.R. China. .,Department of Clinical Laboratory, Shandong Provincial Qianfoshan Hospital, The First Affiliated Hospital of Shandong First Medical University, Jinan, Shandong, P.R. China
| | - Weiming Zhao
- Department of Microbiology, Key Laboratory of Infection and Immunity of Shandong Province, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, P.R. China.
| |
Collapse
|
29
|
Zhang YJ, Pan Q, Yu Y, Zhong XP. microRNA-519d Induces Autophagy and Apoptosis of Human Hepatocellular Carcinoma Cells Through Activation of the AMPK Signaling Pathway via Rab10. Cancer Manag Res 2020; 12:2589-2602. [PMID: 32346312 PMCID: PMC7167370 DOI: 10.2147/cmar.s207548] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Accepted: 12/09/2019] [Indexed: 12/11/2022] Open
Abstract
Background and Aim Hepatocellular carcinoma (HCC) is a type of cancer with high mortality rates. The overexpression of microRNA-519d (miR-519d) has been explored in different types of cancers, which could significantly help suppress cancer development. This study aimed to investigate the interaction of miR-519d with its target gene, Rab10, as well as its effects on cell proliferation and autophagy in HCC cells through modulation of the AMPK signaling pathway. Methods Microarray analysis was used to analyze the differentially expressed genes in HCC, and the target genes of the screened-out miRNA were predicted and verified. The expression of miR-519d and Rab10, AMPK signaling pathway-related proteins, apoptosis- and autophagy-related proteins was determined by RT-qPCR and Western blot analysis in HCC tissues and cell lines. Lastly, the effects of miR-519d and Rab10 in HCC cell proliferation, apoptosis, and mouse tumour xenograft in vivo were examined through gain- and loss-of-function experiments. Results MiR-519d was down-regulated and Rab10 was upregulated in HCC tissues and cell lines. Overexpression of miR-519d decreased the expression of Rab10, mTOR, and Bcl-2, but increased the expression of Bax, Beclin1, Atg5, and p53. Upregulated miR-519d and downregulated Rab10 expression suppressed cell proliferation and induced cell apoptosis and autophagy in HCC cells. Finally, upregulation of miR-519d inhibited tumour growth in vivo. Conclusion The result obtained in this study indicates that up-regulation of miR-519d inhibits proliferation and promotes apoptosis and autophagy of HCC cells through activation of the AMPK signaling pathway via downregulating Rab10, which provides a potential target for the treatment of HCC.
Collapse
Affiliation(s)
- Yi-Jie Zhang
- Department of Hepatobiliary and Organ Transplantation, The First Affiliated Hospital of China Medical University, Shenyang 110001, People's Republic of China.,The Key Laboratory of Organ Transplantation of Liaoning Province, The First Affiliated Hospital of China Medical University, Shenyang 110001, People's Republic of China
| | - Qi Pan
- Department of Hepatobiliary and Organ Transplantation, The First Affiliated Hospital of China Medical University, Shenyang 110001, People's Republic of China.,The Key Laboratory of Organ Transplantation of Liaoning Province, The First Affiliated Hospital of China Medical University, Shenyang 110001, People's Republic of China
| | - Yang Yu
- Department of Hepatobiliary and Organ Transplantation, The First Affiliated Hospital of China Medical University, Shenyang 110001, People's Republic of China.,The Key Laboratory of Organ Transplantation of Liaoning Province, The First Affiliated Hospital of China Medical University, Shenyang 110001, People's Republic of China
| | - Xin-Ping Zhong
- Department of Hepatobiliary and Organ Transplantation, The First Affiliated Hospital of China Medical University, Shenyang 110001, People's Republic of China.,The Key Laboratory of Organ Transplantation of Liaoning Province, The First Affiliated Hospital of China Medical University, Shenyang 110001, People's Republic of China
| |
Collapse
|
30
|
Wang C, Li L, Jiang J, Li L, Li J, Xu C, Jin S, Zhu L, Yan G. Pterostilbene Inhibits FcεRI Signaling through Activation of the LKB1/AMPK Pathway in Allergic Response. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:3456-3465. [PMID: 32096633 DOI: 10.1021/acs.jafc.9b07126] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
In this study, the role and mechanism of pterostilbene (Pts) in mast cell degranulation in vitro and in vivo were investigated. The results showed that Pts inhibited mast cell-mediated local passive allergic reactions in mice. In addition, treatment with Pts reduced both histamine release and calcium influx in rat peritoneal mast cells and RBL-2H3 cells and reduced IgE-mediated mast cell activation. Furthermore, the mechanism underlying Pts inhibition of mast cell signaling was probed via studying the effects of Pts on liver kinase B1 (LKB1), including the use of the LKB1 activator metformin and siRNA knockdown of LKB1. The data showed that Pts reduced the release of inflammatory mediators such as tumor necrosis factor-α, interleukin-6, leukotriene C4, and prostaglandin D2 in mast cells by activating the LKB1/adenosine monophosphate (AMP)-activated protein kinase (AMPK) signaling pathway. Furthermore, Pts inhibited phosphorylation of FcεRI and FcεRI-mediated degranulation in RBL-2H3 cells. These effects were attenuated after LKB1 knockdown. Taken together, Pts could inhibit FcεRI signaling through activation of the LKB1/AMPK signaling pathway in IgE-mediated mast cell activation. Thus, Pts might be an effective therapeutic agent for mast cell-mediated allergic diseases.
Collapse
Affiliation(s)
- Chongyang Wang
- Department of Anatomy, Histology and Embryology, Medical College, Yanbian University, Yanji 133002, P. R. China
- Jilin Key Laboratory of Anaphylactic Disease, Yanbian University, Yanji 133000, P. R. China
| | - Liangchang Li
- Department of Anatomy, Histology and Embryology, Medical College, Yanbian University, Yanji 133002, P. R. China
- Jilin Key Laboratory of Anaphylactic Disease, Yanbian University, Yanji 133000, P. R. China
| | - Jingzhi Jiang
- Department of Anatomy, Histology and Embryology, Medical College, Yanbian University, Yanji 133002, P. R. China
- Jilin Key Laboratory of Anaphylactic Disease, Yanbian University, Yanji 133000, P. R. China
| | - Li Li
- Department of Anatomy, Histology and Embryology, Medical College, Yanbian University, Yanji 133002, P. R. China
- Jilin Key Laboratory of Anaphylactic Disease, Yanbian University, Yanji 133000, P. R. China
| | - Junfeng Li
- Department of Anatomy, Histology and Embryology, Medical College, Yanbian University, Yanji 133002, P. R. China
- Jilin Key Laboratory of Anaphylactic Disease, Yanbian University, Yanji 133000, P. R. China
| | - Chang Xu
- Department of Anatomy, Histology and Embryology, Medical College, Yanbian University, Yanji 133002, P. R. China
- Jilin Key Laboratory of Anaphylactic Disease, Yanbian University, Yanji 133000, P. R. China
| | - Shan Jin
- Jilin Key Laboratory of Anaphylactic Disease, Yanbian University, Yanji 133000, P. R. China
- Department of Dermatology, Yanbian University Hospital, Yanji 133002, P. R. China
| | - Lianhua Zhu
- Jilin Key Laboratory of Anaphylactic Disease, Yanbian University, Yanji 133000, P. R. China
- Department of Dermatology, Yanbian University Hospital, Yanji 133002, P. R. China
| | - Guanghai Yan
- Department of Anatomy, Histology and Embryology, Medical College, Yanbian University, Yanji 133002, P. R. China
- Jilin Key Laboratory of Anaphylactic Disease, Yanbian University, Yanji 133000, P. R. China
| |
Collapse
|
31
|
4-hydroxyphenylpyruvate dioxygenase promotes lung cancer growth via pentose phosphate pathway (PPP) flux mediated by LKB1-AMPK/HDAC10/G6PD axis. Cell Death Dis 2019; 10:525. [PMID: 31285420 PMCID: PMC6614486 DOI: 10.1038/s41419-019-1756-1] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 06/17/2019] [Accepted: 06/18/2019] [Indexed: 02/06/2023]
Abstract
4-hydroxyphenylpyruvate dioxygenase (HPD) is an important modifier of tyrosine metabolism. However, the precise contribution of HPD to cancer metabolism and tumorigenesis remains unclear. In this study, we found that HPD was highly expressed in lung cancer and its higher expression correlated with poor prognosis in lung cancer patients. Suppressed HPD expression was sufficient to decrease oxidative pentose phosphate pathway (PPP) flux, leading to reduced RNA biosynthesis and enhanced reactive oxygen species (ROS) level, attenuated cancer cell proliferation, and tumor growth. Mechanistically, HPD not only promotes tyrosine catabolism leading to increased acetyl-CoA levels, the source of histone acetylation, but also stimulates histone deacetylase 10 (HDAC10) translocation from the nucleus into the cytoplasm mediated by tumor suppressor liver kinase B1 (LKB1)–AMP-activated protein kinase (AMPK) signaling. Both controlled histone acetylation modification, which enhanced transcription of the important PPP enzyme Glucose-6-Phosphate Dehydrogenase (G6PD). Thus, this study reveals HPD as a novel regulator of LKB1–AMPK signaling-mediated HDAC10 nuclear location, which contributes to G6PD expression in promoting tumor growth, which is a promising target for lung cancer treatment.
Collapse
|
32
|
Beljanski V, Grinnemo KH, Österholm C. Pleiotropic roles of autophagy in stem cell-based therapies. Cytotherapy 2019; 21:380-392. [PMID: 30876741 DOI: 10.1016/j.jcyt.2019.02.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Revised: 01/25/2019] [Accepted: 02/19/2019] [Indexed: 02/07/2023]
Abstract
Stem cells (SCs) have been proven to possess regenerative and immunomodulatory properties and can be used to treat diseases that involve loss of cells due to tissue damage or inflammation. For this approach to succeed, SCs or their derivatives should be able to engraft in the target tissue at least for a short period of time. Unfortunately, once injected, therapeutic SCs will encounter a hostile environment, including hypoxia, lack of nutrients and stromal support, and cells may also be targeted and rejected by the immune system. Therefore, SC's stress-response mechanisms likely play a significant role in survival of injected cells and possibly contribute to their therapeutic efficacy. Autphagy, a stress-response pathway, is involved in many different cellular processes, such as survival during hypoxia and nutrient deprivation, cellular differentiation and de-differentiation, and it can also contribute to their immunovisibility by regulating antigen presentation and cytokine secretion. Autophagy machinery interacts with many proteins and signaling pathways that regulate SC properties, including PI3K/Akt, mammalian target of rapamycin (mTOR), Wnt, Hedgehog and Notch, and it is also involved in regulating intracellular reactive oxygen species (ROS) levels. In this review, we contend that autophagy is an important therapeutic target that can be used to improve the outcome of SC-based tissue repair and regeneration. Further research should reveal whether inhibition or stimulation of autophagy increases the therapeutic utility of SCs and it should also identify appropriate therapeutic regimens that can be applied in the clinic.
Collapse
Affiliation(s)
- Vladimir Beljanski
- NSU Cell Therapy Institute, Nova Southeastern University, Fort Lauderdale, Florida, USA.
| | - Karl-Henrik Grinnemo
- Department of Molecular Medicine and Surgery, Division of Cardiothoracic Surgery and Anesthesiology, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden; Department of Surgical Sciences, Division of Cardiothoracic Surgery and Anesthesiology, Uppsala University, Akademiska University Hospital, Uppsala, Sweden
| | - Cecilia Österholm
- Department of Molecular Medicine and Surgery, Division of Cardiothoracic Surgery and Anesthesiology, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| |
Collapse
|
33
|
He W, Li J. Exendin-4 enhances radiation response of prostate cancer. Prostate 2018; 78:1125-1133. [PMID: 30009503 DOI: 10.1002/pros.23687] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Accepted: 06/22/2018] [Indexed: 12/27/2022]
Abstract
BACKGROUND Exendin-4, one of the most widely used antidiabetic drugs, has recently been reported to have potential antitumor effects in cancers. Prostate cancer (PC) is one of the most common cancers in male patients with type 2 diabetes mellitus, and radiotherapy plays a vital role in the therapy of PC. Whether exendin-4 has the potential to enhance PC response to ionizing radiation (IR) remains unknown. We aimed to explore whether exendin-4 radiosensitizes PC cells. METHODS GLP-1 receptor (GLP-1R) expression in PC tissue samples and cell lines were analyzed, Human prostate cancer cells (PC3 and LNCap) were treated with IR and exendin-4, and subjected to proliferation, clone formation, cell cycle, immunoblotting, and immunohistochemical analysis. An in situ prostate tumor of animal model was established. RESULTS We found that GLP-1R was expressed in human PC tissues and cell lines. 1-100 nM exendin-4 promoted the anti-proliferation effects of IR in vitro and in vivo, and enhanced radiation-induced G2/M cycle arrest in PC cells in a dose-dependent manner. Furthermore, Ex-4 increased AMPK phosphorylation, decrease the levels of p-mTOR, cyclin B, and p34cdc2 . CONCLUSIONS Our study suggested exendin-4 radiosensitizes PC cells via activation of AMPK A and subsequent inhibition of p-mTOR, cyclin B, and p34cdc2 activation.
Collapse
Affiliation(s)
- Wenjing He
- Institute of Urology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Junhe Li
- Department of Oncology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| |
Collapse
|
34
|
Luo S, Li Z, Mao L, Chen S, Sun S. Sodium butyrate induces autophagy in colorectal cancer cells through LKB1/AMPK signaling. J Physiol Biochem 2018; 75:53-63. [PMID: 30362049 DOI: 10.1007/s13105-018-0651-z] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Accepted: 10/08/2018] [Indexed: 02/06/2023]
Abstract
Butyrate is produced by the fermentation of undigested dietary fibers and acts as the promising candidate for cancer treatment. However, the mechanism underlying sodium butyrate (NaB)-induced autophagy in colorectal cancer is not yet completely understood. The expressions of LC3-II protein and mRNA were detected by western blot and quantitative RT-PCR in colorectal cancer (CRC) cell lines HCT-116 and HT-29, respectively. Autolysosome formation was observed by transmission electron microscope. AMPK and LKB1 were inhibited by chemical inhibitor or siRNAs and confirmed by western blot. NaB elevated the protein and mRNA expressions of LC3 in a dose-dependent manner. NaB treatment increased the formation of autolysosome and expression of phosphorylated liver kinase B1 (LKB1), AMP-activated protein kinase (AMPK), and acetyl-CoA carboxylase (ACC). Treatment with compound C (an inhibitor of AMPK) and siRNA-mediated knockdown of AMPK and LKB1 significantly attenuated NaB-induced autophagy in CRC cells. Collectively, these findings indicated that LKB1 and AMPK are critical for NaB-mediated autophagy and may act as the novel targets for colorectal cancer therapy in the future.
Collapse
Affiliation(s)
- Shunli Luo
- Department of Nutrition and Food Hygiene, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, No.1023 South Sha-Tai Rd, Guangzhou, 510515, People's Republic of China.,School of Laboratory Medicine, Hunan University of Medicine, Huaihua, 418000, People's Republic of China
| | - Ziyin Li
- Department of Nutrition and Food Hygiene, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, No.1023 South Sha-Tai Rd, Guangzhou, 510515, People's Republic of China
| | - Lianzhi Mao
- Department of Nutrition and Food Hygiene, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, No.1023 South Sha-Tai Rd, Guangzhou, 510515, People's Republic of China
| | - Siqiang Chen
- Guangzhou Customs District, No.66, Huacheng Avenue, Zhujiang Xincheng, Guangzhou, 510623, People's Republic of China
| | - Suxia Sun
- Department of Nutrition and Food Hygiene, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, No.1023 South Sha-Tai Rd, Guangzhou, 510515, People's Republic of China.
| |
Collapse
|
35
|
Liu M, Jiang L, Fu X, Wang W, Ma J, Tian T, Nan K, Liang X. Cytoplasmic liver kinase B1 promotes the growth of human lung adenocarcinoma by enhancing autophagy. Cancer Sci 2018; 109:3055-3067. [PMID: 30033530 PMCID: PMC6172065 DOI: 10.1111/cas.13746] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Revised: 07/14/2018] [Accepted: 07/17/2018] [Indexed: 12/15/2022] Open
Abstract
Liver kinase B1 (LKB1) as a tumor suppression gene that is associated with various kinds of cancers, including lung cancer. In this study, we found that the effect of LKB1 on tumor growth was dependent on its subcellular expression in A549 and HCC827 cells. Full‐length LKB1 decreased the proliferation and clonogenicity of A549‐LKB1 and HCC827‐LKB1 cells, but increased their apoptosis. Opposite effects were observed in A549‐LKB1s and HCC827‐LKB1S cells that overexpressed truncated LKB1 without the nuclear localization sequence. The truncated cytoplasmic LKB1 enhanced the growth of implanted tumors in vivo. The truncated cytoplasmic LKB1 promoted autophagy, which was independent of AMP‐activated protein kinase and mTOR signaling in A549 and HCC827 cells. Further characterization indicated that higher levels of cytoplasmic LKB1 expression were associated with advanced TNM stage and reduced overall survival (OS) in 190 patients with adenocarcinoma. In contrast, high nuclear expression of LKB1 is associated with early TNM stage and longer OS. The high level of cytoplasmic LKB1 expression was an independent risk factor for poor overall survival in patients with adenocarcinoma. Together, our results revealed that cytoplasmic LKB1 promotes the growth of lung adenocarcinoma and could be a prognostic marker for lung adenocarcinoma.
Collapse
Affiliation(s)
- Mengjie Liu
- Department of Medical Oncology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Lili Jiang
- Department of Medical Oncology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Xiao Fu
- Department of Medical Oncology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Wenjuan Wang
- Department of Medical Oncology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Jiequn Ma
- 1st Department of Medical Oncology, Shaanxi Provincial Cancer Hospital, Xi'an, China
| | - Tao Tian
- Department of Medical Oncology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Kejun Nan
- Department of Medical Oncology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Xuan Liang
- Department of Medical Oncology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| |
Collapse
|
36
|
He M, Shi X, Yang M, Yang T, Li T, Chen J. Mesenchymal stem cells-derived IL-6 activates AMPK/mTOR signaling to inhibit the proliferation of reactive astrocytes induced by hypoxic-ischemic brain damage. Exp Neurol 2018; 311:15-32. [PMID: 30213506 DOI: 10.1016/j.expneurol.2018.09.006] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Revised: 08/10/2018] [Accepted: 09/07/2018] [Indexed: 01/08/2023]
Abstract
Mesenchymal stem cells (MSCs) treatment is an effective strategy for the functional repair of central nervous system (CNS) insults through the production of bioactive molecules. We have previously demonstrated that the interleukin-6 (IL-6) secreted by MSCs plays an anti-apoptotic role in injured astrocytes and partly promotes functional recovery in neonatal rats with hypoxic-ischemic brain damage (HIBD). However, the mechanisms of IL-6 underlying the proliferation of injured astrocytes have not been fully elucidated. In this study, we investigated the therapeutic effects of MSCs on astrocyte proliferation in neonatal rats subjected to HIBD. A HIBD model was established in Sprague Dawley (SD) rats, and MSCs were administered by intracerebroventricular injection 5 days after HIBD. Rat primary astrocytes were cultured, subjected to oxygen glucose deprivation (OGD) injury and then immediately co-cultured with MSCs in vitro. Immunofluorescence staining, Cell Counting Kit (CCK)-8, flow cytometry, Ca2+ imaging, enzyme-linked immunosorbent assay (ELISA), western blotting, and co-immunoprecipitation (Co-IP) were performed. We found that MSCs transplantation not only promoted the recovery of learning and memory function in HIBD rats but also significantly reduced the number of Ki67+/glial fibrillary acidic protein (GFAP)+ cells in the hippocampi 7-14 days after HIBD. In addition to increasing IL-6 expression in both the hippocampi of HIBD rats and astrocyte culture medium, MSCs treatment in vitro significantly increased the expression levels of glycoprotein (gp) 130 and phosphorylated AMP-activated protein kinase α (p-AMPKα) and decreased the expression levels of p-mammalian target of rapamycin (mTOR) and its downstream targets. Furthermore, MSCs treatment induced a protein-protein interaction between gp130 and p-AMPKα. Suppression of IL-6 expression in MSCs reversed the above regulatory functions of MSCs in hippocampal astrocytes. The utilization of rapamycin further confirmed that mTOR participated in the proliferation of reactive astrocytes. These findings suggest that endogenous IL-6 produced by MSCs in the HIBD microenvironment provides therapeutic advantages by activating AMPK/mTOR signaling, thus reducing the proliferation of reactive astrocytes.
Collapse
Affiliation(s)
- Mulan He
- Children's Nutrition Research Center, Children's Hospital of Chongqing Medical University, Chongqing 400014, China; Ministry of Education Key Laboratory of Child Development and Disorders, Children's Hospital of Chongqing Medical University, Chongqing 400014, China; China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing 400014, China; Chongqing Stem Cell Therapy Engineering Technical Center, Children's Hospital of Chongqing Medical University, Chongqing 400014, China
| | - Xia Shi
- Children's Nutrition Research Center, Children's Hospital of Chongqing Medical University, Chongqing 400014, China; Ministry of Education Key Laboratory of Child Development and Disorders, Children's Hospital of Chongqing Medical University, Chongqing 400014, China; China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing 400014, China; Chongqing Stem Cell Therapy Engineering Technical Center, Children's Hospital of Chongqing Medical University, Chongqing 400014, China
| | - Miao Yang
- Children's Nutrition Research Center, Children's Hospital of Chongqing Medical University, Chongqing 400014, China; Ministry of Education Key Laboratory of Child Development and Disorders, Children's Hospital of Chongqing Medical University, Chongqing 400014, China; China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing 400014, China; Chongqing Stem Cell Therapy Engineering Technical Center, Children's Hospital of Chongqing Medical University, Chongqing 400014, China
| | - Ting Yang
- Children's Nutrition Research Center, Children's Hospital of Chongqing Medical University, Chongqing 400014, China; Ministry of Education Key Laboratory of Child Development and Disorders, Children's Hospital of Chongqing Medical University, Chongqing 400014, China; China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing 400014, China
| | - Tingyu Li
- Children's Nutrition Research Center, Children's Hospital of Chongqing Medical University, Chongqing 400014, China; Ministry of Education Key Laboratory of Child Development and Disorders, Children's Hospital of Chongqing Medical University, Chongqing 400014, China; China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing 400014, China
| | - Jie Chen
- Children's Nutrition Research Center, Children's Hospital of Chongqing Medical University, Chongqing 400014, China; Ministry of Education Key Laboratory of Child Development and Disorders, Children's Hospital of Chongqing Medical University, Chongqing 400014, China; China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing 400014, China; Chongqing Stem Cell Therapy Engineering Technical Center, Children's Hospital of Chongqing Medical University, Chongqing 400014, China.
| |
Collapse
|
37
|
Tan X, Liao Z, Liang H, Chen X, Zhang B, Chu L. Upregulation of liver kinase B1 predicts poor prognosis in hepatocellular carcinoma. Int J Oncol 2018; 53:1913-1926. [PMID: 30226588 PMCID: PMC6192789 DOI: 10.3892/ijo.2018.4556] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Accepted: 08/03/2018] [Indexed: 12/15/2022] Open
Abstract
The majority of studies report that liver kinase B1 (LKB1) acts as a tumor suppressor by inhibiting cell proliferation and metastasis. The present study investigated the expression pattern of LKB1 in 2 cohorts of paired hepatocellular carcinoma (HCC) and analogous non-cancerous tissues (ANT). The results indicated that LKB1 was upregulated in HCC vs. ANT tissues, and that high expression of LKB1 was associated with a higher number of tumor foci, larger tumor size, poorer tumor differentiation, Edmondson-Steiner grade, Barcelona Clinic Liver Cancer grade and tumor-node-metastasis stage. Furthermore, high LKB1 expression was associated with poor overall survival (OS), shorter disease-free survival and early recurrence. Univariate and multivariate analyses demonstrated that high LKB1 expression may serve as an independent prognostic marker for OS, but not for recurrence. In addition, knockdown of LKB1 expression in HCC cell lines inhibited cell proliferation and subcutaneous tumor growth by promoting cell apoptosis. Therefore, the findings of the present study suggest a protooncogenic role of LKB1 in HCC.
Collapse
Affiliation(s)
- Xiaolong Tan
- Hepatic Surgery Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, P.R. China
| | - Zhibin Liao
- Hepatic Surgery Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, P.R. China
| | - Huifang Liang
- Hepatic Surgery Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, P.R. China
| | - Xiaoping Chen
- Hepatic Surgery Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, P.R. China
| | - Bixiang Zhang
- Hepatic Surgery Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, P.R. China
| | - Liang Chu
- Hepatic Surgery Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, P.R. China
| |
Collapse
|
38
|
Lu J, Tang M, Liu Y, Wang J, Wu Z. Comparative Proteomics of Chromium-Transformed Beas-2B Cells by 2D-DIGE and MALDI-TOF/TOF MS. Biol Trace Elem Res 2018; 185:78-88. [PMID: 29340859 DOI: 10.1007/s12011-017-1222-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Accepted: 12/11/2017] [Indexed: 12/12/2022]
Abstract
Chromium (Cr) is a highly toxic, common heavy metal used in industrial production. There are two types of Cr in nature: hexavalent chromium (Cr(VI)) and chromium trichloride (Cr(III)). Cr(III) is involved in the metabolism of sugars and lipids, whereas Cr(VI) is absorbed through the respiratory tract and skin and generates free radicals that result in secondary toxicity. Cr(VI) leads to cancer in the occupational population and is therefore recognized as a human carcinogen by the International Agency for Research on Cancer. The specific mechanism underlying Cr-induced carcinogenesis is complex. In this study, two-dimensional fluorescence difference gel electrophoresis and matrix-assisted laser desorption ionization-time-of-flight/time-of-flight mass spectrometry-based techniques were performed to analyze differentially expressed proteins between Beas-2B human bronchial epithelial cells and Cr(VI)-transformed Beas-2B cells. Many differentially expressed proteins were identified in the cells after malignant transformation, including serine/threonine kinase 11, endothelial nitric oxide synthase 3, apolipoprotein A1, vinculin, and lamin A/C. These proteins are involved in many signaling and metabolic pathways, including apoptosis, autophagy, the PI3K/Akt signaling pathway, focal adhesion, cell motility, and actin cytoskeleton rearrangement.
Collapse
Affiliation(s)
- Jian Lu
- Institute of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu, 212013, China.
- School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, 212013, China.
| | - Miaomiao Tang
- Institute of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu, 212013, China
- School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, 212013, China
| | - Yi Liu
- Institute of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu, 212013, China
- School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, 212013, China
| | - Jin Wang
- Institute of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu, 212013, China
- School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, 212013, China
| | - Zhanao Wu
- Nanjing Military Region Stomatological Center, No. 359 Hospital, the People's Liberation Army, Zhenjiang, China.
| |
Collapse
|
39
|
Luo M, Mo J, Yu Q, Zhou S, Ning R, Zhang Y, Su C, Wang H, Cui J. Wogonoside induces apoptosis in human non-small cell lung cancer A549 cells by promoting mitochondria dysfunction. Biomed Pharmacother 2018; 106:593-598. [PMID: 29990847 DOI: 10.1016/j.biopha.2018.06.077] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Revised: 06/13/2018] [Accepted: 06/13/2018] [Indexed: 02/01/2023] Open
Abstract
Non-small cell lung cancer (NSCLC) is one of the most prevailing malignancies worldwide. It has been previously shown that wogonoside exerts anti-tumor activities in various kinds of human cancers. But its role in NSCLC remains elusive. In the present study, we determined the anti-tumor effect of wogonoside in human NSCLC A549 cells. We found that wogonoside effectively inhibits A549 cell viability through inducing cell cycle arrest and apoptosis. Moreover, administration of wogonoside by intraperitoneal injection inhibits the growth of A549 cell xenografts in athymic nude mice. Additionally, mitochondrial membrane potential was disrupted and cytochrome c was released to cytosol in the wogonoside-treated A549 cells. Finally, we found that AMPK/mTOR signaling might be implicated in the anti-NSCLC efficacy of wogonoside. Therefore, we may assume that wogonoside may be considered as a potential therapeutic agent for the treatment of NSCLC.
Collapse
Affiliation(s)
- Min Luo
- Department of Oncology, No. 303 Hospital of Chinese People's Liberation Army, Nanning, Guangxi 530021, China
| | - Juanmei Mo
- Department of Oncology, No. 303 Hospital of Chinese People's Liberation Army, Nanning, Guangxi 530021, China
| | - Qitao Yu
- Department of Medical Oncology, The Cancer Institute, Affiliated Tumor Hospital of Guangxi Medical University, Nanning, Guangxi 530021, China
| | - Shaozhang Zhou
- Department of Medical Oncology, The Cancer Institute, Affiliated Tumor Hospital of Guangxi Medical University, Nanning, Guangxi 530021, China
| | - Ruiling Ning
- Department of Medical Oncology, The Cancer Institute, Affiliated Tumor Hospital of Guangxi Medical University, Nanning, Guangxi 530021, China
| | - Yu Zhang
- Department of Oncology, No. 303 Hospital of Chinese People's Liberation Army, Nanning, Guangxi 530021, China
| | - Cuiyun Su
- Department of Medical Oncology, The Cancer Institute, Affiliated Tumor Hospital of Guangxi Medical University, Nanning, Guangxi 530021, China
| | - Hongzhi Wang
- Department of Oncology, No. 303 Hospital of Chinese People's Liberation Army, Nanning, Guangxi 530021, China
| | - Jiandong Cui
- Department of Oncology, No. 303 Hospital of Chinese People's Liberation Army, Nanning, Guangxi 530021, China.
| |
Collapse
|
40
|
Yang X, Zhu J, Wu J, Huang N, Cui Z, Luo Y, Sun F, Pan Q, Li Y, Yang Q. (-)-Guaiol regulates autophagic cell death depending on mTOR signaling in NSCLC. Cancer Biol Ther 2018; 19:706-714. [PMID: 29611762 DOI: 10.1080/15384047.2018.1451277] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
(-)-Guaiol, a sesquiterpene alcohol with the guaiane skeleton, has been found in many Chinese medicinal plants and been reported to comprise various guaiane natural products that are well known for their antibacterial activities. Previously, we have shown its antitumor activity by inducing autophagy in NSCLC cells. However, its potential mechanism in inducing autophagy is still under our investigation. Here, data from our western blotting assays showed that, in NSCLC cells, (-)-Guaiol significantly blocked the mTORC2-AKT signaling by suppressing mTOR phosphorylation at serine 2481 (S2481) to induce autophagy, illustrated by the increasing ratio of LC3II/I. Besides, it impaired the mTORC1 signaling by inhibiting the activity of its downstream factors, such as 4E-BP1 and p70 S6K, all of which could obviously rescued by the mTOR activator MHY1485. Afterwards, results from biofunctional assays, including cell survival analysis, colony formation assays and flow cytometry assays, suggested that (-)-Guaiol triggered autophagic cell death by targeting both mTORC1 and mTORC2 signaling pathways. In summary, our studies showed that (-)-Guaiol inhibited the proliferation of NSCLC cells by specifically targeting mTOR signaling pathways, including both mTORC1 and mTORC2 signaling, providing a better therapeutic option for substituting rapamycin in treating NSCLC patients.
Collapse
Affiliation(s)
- Xiaohui Yang
- b Department of oncology , Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine , Shanghai , China
| | - Jiabei Zhu
- c Department of laboratory medicine , Shanghai Children's Medical Center, Shanghai Jiaotong University School of Medicine , Shanghai , China
| | - Jianchun Wu
- b Department of oncology , Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine , Shanghai , China
| | - Nan Huang
- a Department of Clinical Laboratory Medicine , Tenth People's Hospital of Tongji University , Shanghai , China
| | - Zhongqi Cui
- a Department of Clinical Laboratory Medicine , Tenth People's Hospital of Tongji University , Shanghai , China
| | - Yingbin Luo
- b Department of oncology , Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine , Shanghai , China
| | - Fenyong Sun
- a Department of Clinical Laboratory Medicine , Tenth People's Hospital of Tongji University , Shanghai , China
| | - Qiuhui Pan
- c Department of laboratory medicine , Shanghai Children's Medical Center, Shanghai Jiaotong University School of Medicine , Shanghai , China
| | - Yan Li
- b Department of oncology , Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine , Shanghai , China
| | - Qingyuan Yang
- a Department of Clinical Laboratory Medicine , Tenth People's Hospital of Tongji University , Shanghai , China
| |
Collapse
|
41
|
Tseng CH. Metformin and lung cancer risk in patients with type 2 diabetes mellitus. Oncotarget 2018; 8:41132-41142. [PMID: 28456789 PMCID: PMC5522244 DOI: 10.18632/oncotarget.17066] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Accepted: 03/22/2017] [Indexed: 02/07/2023] Open
Abstract
This study evaluated whether metformin might reduce lung cancer risk. The reimbursement database of the Taiwan's National Health Insurance was used. A sample of 15414 never users and 280159 ever users of metformin (original sample) and a 1:1 matched-pairs of ever and never users (n=15414 in each group, matched sample) were recruited from patients with newly diagnosed type 2 diabetes mellitus during 1999-2005. They were followed until December 31, 2011. Cox regression incorporated with the inverse probability of treatment weighting using propensity score was used to estimate hazard ratios. Results showed that the respective incidence of lung cancer in ever and never users was 173.36 and 292.65 per 100000 person-years in the original sample; and was 211.71 and 292.65, respectively, in the matched sample. The overall hazard ratios (95% confidence intervals) of 0.586 (0.509-0.674) in the original sample and 0.717 (0.584-0.881) in the matched sample suggested a significantly lower risk among metformin users. Hazard ratios comparing the first (<22.60 months), second (22.60-46.67 months) and third (>46.67 months) tertile of cumulative duration of metformin use to never users was 1.163 (1.005-1.348), 0.612 (0.526-0.711) and 0.176 (0.148-0.210), respectively, in the original sample; and was 1.465 (1.131-1.897), 0.758 (0.566-1.016) and 0.228 (1.460-0.357) in the respective tertile of the matched sample. Sensitivity analyses after excluding patients with certain risk factors of cancer and subgroup analyses supported a favorable effect of metformin. In conclusion, metformin use may reduce lung cancer risk in patients with type 2 diabetes mellitus.
Collapse
Affiliation(s)
- Chin-Hsiao Tseng
- Department of Internal Medicine, National Taiwan University College of Medicine, Taipei, Taiwan.,Division of Endocrinology and Metabolism, Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan.,Division of Environmental Health and Occupational Medicine of the National Health Research Institutes, Zhunan, Taiwan
| |
Collapse
|
42
|
Wu P, Liu S, Su J, Chen J, Li L, Zhang R, Chen T. Apoptosis triggered by isoquercitrin in bladder cancer cells by activating the AMPK-activated protein kinase pathway. Food Funct 2018; 8:3707-3722. [PMID: 28948276 DOI: 10.1039/c7fo00778g] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Cancer cells are well known to require a constant supply of protein, lipid, RNA, and DNA via altered metabolism for accelerated cell proliferation. Targeting metabolic pathways is, therefore, a promising therapeutic strategy for cancers. Isoquercitrin (ISO) is widely distributed in dietary and medicinal plants and displays selective cytotoxicity to cancer cells, primarily by inducing apoptosis and cell cycle arrest. The aims of this study were to find out whether ISO could stabilize in a bladder-like acidic environment and inhibit bladder cancer cell proliferation by affecting their metabolism, and to investigate its molecular mechanism. In this study, the exposure of T24 bladder cancer cells to ISO (20-80 μM) decreased cell viability by causing ROS overproduction. This ROS change regulated the AMPK signaling pathway, and caused Caspase-dependent apoptosis as well as metabolism dysfunction. Metabolic alterations elevated metabolic pathway variation, which in turn destabilized lipid synthesis and altered anaerobic glycolysis. This linkage was proved by immunoblotting assay, and metabolomics as identified by UHPLC-QTOF-MS. Our findings provide comprehensive evidence that ISO influenced T24 bladder cancer cell metabolism, and that this process was mainly involved in activating the AMPK pathway. This study could lead to an understanding of how ISO suppresses bladder cancer cell growth, and whether the affected cancer metabolism is a common mechanism by which nutritional compounds suppress cancers.
Collapse
Affiliation(s)
- Ping Wu
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China.
| | | | | | | | | | | | | |
Collapse
|
43
|
Metformin therapy associated with survival benefit in lung cancer patients with diabetes. Oncotarget 2018; 7:35437-45. [PMID: 27105507 PMCID: PMC5085241 DOI: 10.18632/oncotarget.8881] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Accepted: 04/11/2016] [Indexed: 12/13/2022] Open
Abstract
The purpose of this study is to summarize the currently available evidence regarding the concerned issue by performing a comprehensive meta-analysis. Relevant publications reporting the association of metformin use with survival of lung cancer patients with diabetes were electronically searched to identify eligible studies. The meta-analysis was performed with hazard ratios (HRs) and 95% confidence intervals (95% CIs) as effect measures for disease-free survival(DFS) and overall survival(OS) estimates. A total of 17 individual studies from 10 publications were included in the meta-analysis. Overall, the results revealed a significant association of metformin use with a better survival of lung cancer patients with diabetes(for DFS: HR = 0.65, 95%CI = 0.52-0.83; for OS: HR = 0.78, 95%CI = 0.64-0.93). The subgroup analyses showed similar association in Asian region(for DFS:HR = 0.69, 95%CI = 0.59-0.80; for OS: HR = 0.55, 95%CI = 0.46-0.67) but not in Western region. Such association was also presented in small cell lung cancer (for DFS: HR = 0.54, 95%CI = 0.38-0.77; for OS: HR = 0.52, 95%CI = 0.39-0.69) and in non-small cell lung cancer(for DFS: HR = 0.70, 95%CI = 0.51-0.96; for OS: HR = 0.75, 95%CI = 0.58-0.97). Analyses stratified by treatment strategy showed a reduction in the risk of cancer-related mortality in patients receiving chemotherapy(for DFS: HR = 0.71, 95%CI = 0.64-0.83; for OS: HR = 0.58, 95%CI = 0.47-0.71) but not in patients receiving chemoradiotherapy. The meta-analysis demonstrated that metformin use was significantly associated with a favorable survival outcome of lung cancer patients with diabetes.
Collapse
|
44
|
Differential regulation of spermatogenic process by Lkb1 isoforms in mouse testis. Cell Death Dis 2017; 8:e3121. [PMID: 29022902 PMCID: PMC5682689 DOI: 10.1038/cddis.2017.527] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2017] [Revised: 07/28/2017] [Accepted: 09/04/2017] [Indexed: 01/27/2023]
Abstract
Liver serine/threonine kinase B1 (LKB1) is a tumor suppressor associated with the pathogenesis of Peutz-Jeghers syndrome. Affected males are at increased risk of developing Sertoli cell tumors and display defective spermatogenesis. Male mice lacking the short isoform (Lkb1S) of Lkb1 were sterile and exhibited abnormal spermiogenesis. In addition to the short isoform, the long isoform of Lkb1 (Lkb1L) is also expressed in testis; however, the requirement of the long isoform for fertility and the functional difference between the isoforms remain unknown. Herein, different from the spermiation failure reported in Lkb1S knockout mice, conditional deletion (cKO) of both isoforms of Lkb1 in germ cells resulted in male sterility stemming from defects in acrosome formation, as well as nuclear elongation and condensation during spermatid differentiation. Additionally, cKO mice showed a progressive germ cell loss that was never reported in mice with Lkb1S deletion. Further experiments revealed that the defect resulted from the failure of spermatogonial stem/progenitor cells (SPCs) maintenance. Although increased mTORC1 activity in postnatal cKO testes was consistent with a tendency toward germline stem cell differentiation, in vivo inhibition of the pathway by rapamycin treatment failed to rescue the phenotype. Concurrently, we detected a significant reduction of mitochondrial activity in Lkb1deficient SPCs. The results suggest that the regulation of LKB1 on SPCs' maintenance is associated with mitochondrial functions but not through the mTOR signaling pathway. In summary, our study supports different roles of Lkb1 isoforms in spermatogenesis with Lkb1L directing SPCs maintenance, and Lkb1L and Lkb1S coordinately regulating spermatid differentiation.
Collapse
|
45
|
Garland J. Unravelling the complexity of signalling networks in cancer: A review of the increasing role for computational modelling. Crit Rev Oncol Hematol 2017; 117:73-113. [PMID: 28807238 DOI: 10.1016/j.critrevonc.2017.06.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2016] [Revised: 06/01/2017] [Accepted: 06/08/2017] [Indexed: 02/06/2023] Open
Abstract
Cancer induction is a highly complex process involving hundreds of different inducers but whose eventual outcome is the same. Clearly, it is essential to understand how signalling pathways and networks generated by these inducers interact to regulate cell behaviour and create the cancer phenotype. While enormous strides have been made in identifying key networking profiles, the amount of data generated far exceeds our ability to understand how it all "fits together". The number of potential interactions is astronomically large and requires novel approaches and extreme computation methods to dissect them out. However, such methodologies have high intrinsic mathematical and conceptual content which is difficult to follow. This review explains how computation modelling is progressively finding solutions and also revealing unexpected and unpredictable nano-scale molecular behaviours extremely relevant to how signalling and networking are coherently integrated. It is divided into linked sections illustrated by numerous figures from the literature describing different approaches and offering visual portrayals of networking and major conceptual advances in the field. First, the problem of signalling complexity and data collection is illustrated for only a small selection of known oncogenes. Next, new concepts from biophysics, molecular behaviours, kinetics, organisation at the nano level and predictive models are presented. These areas include: visual representations of networking, Energy Landscapes and energy transfer/dissemination (entropy); diffusion, percolation; molecular crowding; protein allostery; quinary structure and fractal distributions; energy management, metabolism and re-examination of the Warburg effect. The importance of unravelling complex network interactions is then illustrated for some widely-used drugs in cancer therapy whose interactions are very extensive. Finally, use of computational modelling to develop micro- and nano- functional models ("bottom-up" research) is highlighted. The review concludes that computational modelling is an essential part of cancer research and is vital to understanding network formation and molecular behaviours that are associated with it. Its role is increasingly essential because it is unravelling the huge complexity of cancer induction otherwise unattainable by any other approach.
Collapse
Affiliation(s)
- John Garland
- Manchester Interdisciplinary Biocentre, Manchester University, Manchester, UK.
| |
Collapse
|
46
|
Metformin Has Positive Therapeutic Effects in Colon Cancer and Lung Cancer. Am J Med Sci 2017; 354:246-251. [PMID: 28918830 DOI: 10.1016/j.amjms.2017.05.006] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2016] [Revised: 04/13/2017] [Accepted: 05/17/2017] [Indexed: 02/01/2023]
Abstract
BACKGROUND Metformin (MF), a diabetic drug, has antineoplastic activity as adjuvant therapy for breast cancer and prostate cancer. MF is thought to work via inhibition of mammalian target of rapamycin and activation of p53 and liver kinase B1 via adenosine 5'-monophosphate-activated protein kinase. We investigated survival, recurrences and metastasis in patients with type 2 diabetes mellitus (DM2) along with colorectal cancer (CC) or lung cancer (LC) taking MF using the electronic medical record in Memphis Veterans Affairs Medical Center (colon, n = 202; lung, n = 180). MATERIALS AND METHODS Patients with CC or LC and DM2 on MF were compared to controls taking any medication except MF. Recurrences, metastases, secondary cancers, survival and carcinoembryonic antigen levels were compared using t test and chi-squared test. Inclusion criteria were based on MF use, CC or LC diagnosis and DM2. RESULTS For CC, the MF group noted fewer deaths (48% versus 76%, P < 0.001), recurrences (4% versus 19%, P = 0.002), metastases (23% versus 46%, P = 0.001), better 5-year survival rates (57% versus 37%, P = 0.004), overall survival years (5.7 versus 4.1, P = 0.007) and greater carcinoembryonic antigen decrease (72% versus 47%, P = 0.015). MF was associated with improved 5-year survival rates (29% versus 15%, P = 0.023) and overall survival years (3.4 versus 1.8, P < 0.001) in LC. CONCLUSIONS Our study shows that MF therapy is associated with significantly better prognosis in patients with CC and improved survival in LC. Patients with CC on MF had fewer recurrences and metastases. Differences in metabolic pathways between CC and LC likely account for the differences in the effect of MF.
Collapse
|
47
|
Yousef M, Tsiani E. Metformin in Lung Cancer: Review of in Vitro and in Vivo Animal Studies. Cancers (Basel) 2017; 9:cancers9050045. [PMID: 28481268 PMCID: PMC5447955 DOI: 10.3390/cancers9050045] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Revised: 05/02/2017] [Accepted: 05/03/2017] [Indexed: 12/19/2022] Open
Abstract
Cancer cells display enhanced growth rates and a resistance to apoptosis. The ability of cancer cells to evade homeostasis and proliferate uncontrollably while avoiding programmed cell death/apoptosis is acquired through mutations to key signaling molecules, which regulate pathways involved in cell proliferation and survival and these mutations allow them to develop resistance to many chemotherapeutic agents, highlighting the need for development of new potent anti-cancer agents. Metformin has long been used as a treatment for type 2 diabetes and has recently attracted attention as a potential agent to be used in the treatment of cancer. The present review summarizes the existing in vitro and in vivo animal studies focusing on the anti-lung cancer effects of metformin and its effects on key proliferative and anti-apoptotic signaling pathways.
Collapse
Affiliation(s)
- Michael Yousef
- Department of Health Sciences, Brock University, St. Catharines, ON L2S 3A1, Canada.
| | - Evangelia Tsiani
- Department of Health Sciences, Brock University, St. Catharines, ON L2S 3A1, Canada.
- Centre for Bone and Muscle Health, Brock University, St. Catharines, ON L2S 3A1, Canada.
| |
Collapse
|
48
|
Zeng H, Fu R, Yan L, Huang J. Lycorine Induces Apoptosis of A549 Cells via AMPK-Mammalian Target of Rapamycin (mTOR)-S6K Signaling Pathway. Med Sci Monit 2017; 23:2035-2041. [PMID: 28450693 PMCID: PMC5421746 DOI: 10.12659/msm.900742] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
BACKGROUND This study was designed to investigate the effect of lycorine (LY) on the AMPK-mTOR-S6K signaling pathway and to clarify its role in autophagy and apoptosis. MATERIAL AND METHODS Various concentrations of LY were used to treat non-small cell lung carcinoma A549 cells. The MTT assay was used to measure cell viability and acridine orange staining was used to detect cell morphology changes. Western blot analysis was used to test the effect of LY on the expression levels of LC3, caspase 3, and other proteins involved in the AMPK-mTOR-S6K signaling pathway. RESULTS The half maximal inhibitory concentration (IC50) of LY after 24-h treatment was 8.5 μM, with stronger inhibitory effect of 24-h LY treatment over 12-h LY treatment. Morphological observation showed that lower doses (4 μM and 8 μM) of LY treatment induced A549 cell death mainly caused by autophagy, whereas the higher dose (16 μM) of LY treatment induced A549 cell death, mainly caused by apoptosis. Furthermore, 8 μM LY caused the highest conversion of LC3-II from LC3-I. All LY treatments activated caspase-3. LY treatment also promoted AMPK phosphorylation (Thr172) and inhibited the phosphorylation of mTOR and S6K. CONCLUSIONS LY induced apoptosis of A549 cells by regulating the AMPK-mTOR-S6K signaling pathway. Lower levels (4~8 μM) of LY-induced autophagy contributed to LY-induced apoptosis.
Collapse
Affiliation(s)
- Hui Zeng
- Department of Medicine, Academy of Medical Sciences and Sichuan Provincial People's Hospital, Chengdu, Sichuan, China (mainland)
| | - Rong Fu
- Department of Plastic Surgery, Sichuan Provincial People's Hospital, Chengdu, Sichuan, China (mainland)
| | - Linxia Yan
- Chengdu Lilai Biotechnology Co., Ltd., Keyuan Nanlu High-Tech Zone, Chengdu, Sichuan, China (mainland)
| | - Jian Huang
- Department of Emergency Medicine, Academy of Medical Sciences and Sichuan Provincial People's Hospital, Chengdu, Sichuan, China (mainland)
| |
Collapse
|
49
|
Li C, Xue Y, Xi YR, Xie K. Progress in the application and mechanism of metformin in treating non-small cell lung cancer. Oncol Lett 2017; 13:2873-2880. [PMID: 28529553 PMCID: PMC5431600 DOI: 10.3892/ol.2017.5862] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2015] [Accepted: 01/04/2017] [Indexed: 12/17/2022] Open
Abstract
At present, the incidence and mortality of lung cancer demonstrate an increasing trend. Non-small cell lung cancer (NSCLC) accounts for ~80–85% of all lung cancer cases. Therefore, developing novel and more effective treatments is of great importance. The use of combination therapies, where several anticancer agents are used together, is a promising strategy. Recent studies demonstrate that metformin, which has been utilized for treating diabetes mellitus for >50 years, has antitumor effects in numerous types of cancer including NSCLC. Its antitumor effects can be direct and indirect, and it is able to synergize with other physical therapies including targeted anticancer therapy, chemotherapy and radiotherapy. The present review discusses how metformin affects cellular energy metabolism in NSCLC, the mechanism of its antitumor action and its synergy with other therapies. Information and analysis are provided in the present review to stimulate further studies on metformin as an adjunct anticancer treatment.
Collapse
Affiliation(s)
- Chan Li
- Department of Oncology, Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital, Chengdu, Sichuan 610072, P.R. China
| | - Yang Xue
- Department of Oncology, Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital, Chengdu, Sichuan 610072, P.R. China
| | - Yu-Rong Xi
- Department of Oncology, Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital, Chengdu, Sichuan 610072, P.R. China
| | - Ke Xie
- Department of Oncology, Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital, Chengdu, Sichuan 610072, P.R. China
| |
Collapse
|
50
|
Du C, Li DQ, Li N, Chen L, Li SS, Yang Y, Hou MX, Xie MJ, Zheng ZD. DDX5 promotes gastric cancer cell proliferation in vitro and in vivo through mTOR signaling pathway. Sci Rep 2017; 7:42876. [PMID: 28216662 PMCID: PMC5316961 DOI: 10.1038/srep42876] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Accepted: 01/16/2017] [Indexed: 12/11/2022] Open
Abstract
DEAD (Asp-Glu-Ala-Asp) box helicase 5 (DDX5) is an ATP-dependent RNA helicase that is overexpressed in various malignancies. Increasing evidence suggests that DDX5 participates in carcinogenesis and cancer progression via promoting cell proliferation and metastasis. However, the functional role of DDX5 in gastric cancer is largely unknown. In this study, we observed that DDX5 was significantly up-regulated in gastric cancer tissues compared with the paired adjacent normal tissues. The expression of DDX5 correlated strongly with Ki67 index and pathological stage of gastric cancer. In vitro and in vivo studies suggested that knockdown of DDX5 inhibited gastric cancer cell proliferation, colony formation and xenografts growth, whereas ectopic expression of DDX5 promoted these cellular functions. Mechanically, DDX5 induced gastric cancer cell growth by activating mTOR/S6K1. Treatment of everolimus, the specific mTOR inhibitor, significantly attenuated DDX5-mediated cell proliferation. Interestingly, the expression of DDX5 and p-mTOR in gastric cancer tissues demonstrated a positive correlation. Taken together, these results revealed a novel role of DDX5 in gastric cancer cell proliferation via the mTOR pathway. Therefore, DDX5 may serve as a therapeutic target in gastric cancer.
Collapse
Affiliation(s)
- Cheng Du
- Department of Oncology, General Hospital of Shenyang Military Area Command, Shenyang 110840, P. R. China
| | - Dan-Qi Li
- Institute of Functional Molecules, Shenyang University of Chemical Technology, Shenyang 110142, P. R. China
| | - Na Li
- Department of Gynaecology and Obstetrics, First Affiliated Hospital, Jilin University, Jilin 130021, P. R. China
| | - Li Chen
- Department of Aerospace Medicine, The Fourth Military Medical University, Xi'an 710032, P. R. China
| | - Shi-Sen Li
- Department of Digestive Surgery, Xijing Hospital of Digestive Diseases, The Fourth Military Medical University, Xi'an 710032, China
| | - Yang Yang
- Department of Oncology, Xijing Hospital, The Fourth Military Medical University, Xi'an 710032, P. R. China
| | - Ming-Xiao Hou
- Rescue Center of Severe Wound and Trauma of PLA, General Hospital of Shenyang Military Area Command, Shenyang 110840, P. R. China
| | - Man-Jiang Xie
- Department of Aerospace Medicine, The Fourth Military Medical University, Xi'an 710032, P. R. China
| | - Zhen-Dong Zheng
- Department of Oncology, General Hospital of Shenyang Military Area Command, Shenyang 110840, P. R. China
| |
Collapse
|