1
|
Choi B, Na Y, Whang MY, Ho JY, Han MR, Park SW, Song H, Hur SY, Choi YJ. MGMT Methylation Is Associated with Human Papillomavirus Infection in Cervical Dysplasia: A Longitudinal Study. J Clin Med 2023; 12:6188. [PMID: 37834832 PMCID: PMC10573962 DOI: 10.3390/jcm12196188] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2023] [Revised: 09/19/2023] [Accepted: 09/23/2023] [Indexed: 10/15/2023] Open
Abstract
Cervical premalignancy/malignancy, as detected by cervical cytology or biopsy, can develop as a result of human papillomavirus (HPV) infection. Meanwhile, DNA methylation is known to be associated with carcinogenesis. In this study, we thus attempted to identify the association between MGMT methylation and persistent HPV infection using an Epi-TOP MPP assay. Integrative analysis of DNA methylation was carried out here using longitudinal cervical cytology samples of seven patients with atypical squamous cells of undetermined significance/low-grade squamous intraepithelial lesion (ASC-US/LSIL). Then, a gene expression analysis using the longitudinal cervical cytology samples and a public database (The Cancer Genome Atlas (TCGA)) was performed. Upon comparing the ASC-US or LSIL samples at the 1st collection and the paired samples at the 2nd collection more than 6 months later, we found that they became hypermethylated over time. Then, using the longitudinal data, we found that the MGMT methylation was associated with HPV infection. Moreover, TCGA dataset revealed an association between downregulated MGMT mRNA expression and poor overall survival. This decreased MGMT mRNA expression was observed to have an inverse relationship with MGMT methylation levels. In this study, we found that the MGMT methylation level could potentially serve as a valuable prognostic indicator for the transition from ASC-US/LSIL to cervical cancer.
Collapse
Affiliation(s)
- Boram Choi
- Department of Obstetrics and Gynecology, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, 222, Banpo-daero, Seocho-gu, Seoul 06591, Republic of Korea; (B.C.); (Y.N.); (M.Y.W.); (J.Y.H.)
| | - Yoojin Na
- Department of Obstetrics and Gynecology, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, 222, Banpo-daero, Seocho-gu, Seoul 06591, Republic of Korea; (B.C.); (Y.N.); (M.Y.W.); (J.Y.H.)
| | - Min Yeop Whang
- Department of Obstetrics and Gynecology, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, 222, Banpo-daero, Seocho-gu, Seoul 06591, Republic of Korea; (B.C.); (Y.N.); (M.Y.W.); (J.Y.H.)
| | - Jung Yoon Ho
- Department of Obstetrics and Gynecology, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, 222, Banpo-daero, Seocho-gu, Seoul 06591, Republic of Korea; (B.C.); (Y.N.); (M.Y.W.); (J.Y.H.)
- Cancer Research Institute, College of Medicine, The Catholic University of Korea, 222, Banpo-daero, Seocho-gu, Seoul 06591, Republic of Korea
| | - Mi-Ryung Han
- Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, Incheon 22012, Republic of Korea; (M.-R.H.); (S.-W.P.)
| | - Seong-Woo Park
- Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, Incheon 22012, Republic of Korea; (M.-R.H.); (S.-W.P.)
| | - Heekyoung Song
- Department of Obstetrics and Gynecology, Incheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Incheon 21431, Republic of Korea;
| | - Soo Young Hur
- Department of Obstetrics and Gynecology, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, 222, Banpo-daero, Seocho-gu, Seoul 06591, Republic of Korea; (B.C.); (Y.N.); (M.Y.W.); (J.Y.H.)
- Cancer Research Institute, College of Medicine, The Catholic University of Korea, 222, Banpo-daero, Seocho-gu, Seoul 06591, Republic of Korea
| | - Youn Jin Choi
- Department of Obstetrics and Gynecology, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, 222, Banpo-daero, Seocho-gu, Seoul 06591, Republic of Korea; (B.C.); (Y.N.); (M.Y.W.); (J.Y.H.)
- Cancer Research Institute, College of Medicine, The Catholic University of Korea, 222, Banpo-daero, Seocho-gu, Seoul 06591, Republic of Korea
| |
Collapse
|
2
|
Ornos ED, Cando LF, Catral CD, Quebral EP, Tantengco OA, Arevalo MVP, Dee EC. Molecular basis of sex differences in cancer: Perspective from Asia. iScience 2023; 26:107101. [PMID: 37404373 PMCID: PMC10316661 DOI: 10.1016/j.isci.2023.107101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/06/2023] Open
Abstract
Cancer is a leading cause of mortality and morbidity globally. Sex differences in cancer are evident in death rates and treatment responses in several cancers. Asian patients have unique cancer epidemiology influenced by their genetic ancestry and sociocultural factors in the region. In this review, we show molecular associations that potentially mediate sex disparities observed in cancer in Asian populations. Differences in sex characteristics are evident at the cytogenetic, genetic, and epigenetic levels mediating processes that include cell cycle, oncogenesis, and metastasis. Larger clinical and in vitro studies that explore mechanisms can confirm the associations of these molecular markers. In-depth studies of these markers can reveal their importance as diagnostics, prognostics, and therapeutic efficacy markers. Sex differences should be considered in designing novel cancer therapeutics in this era of precision medicine.
Collapse
Affiliation(s)
- Eric David Ornos
- Department of Medical Microbiology, College of Public Health, University of the Philippines Manila, Manila 1000, Philippines
- College of Medicine, University of the Philippines Manila, Manila, 1000, Philippines
| | - Leslie Faye Cando
- College of Medicine, University of the Philippines Manila, Manila, 1000, Philippines
| | | | - Elgin Paul Quebral
- College of Medicine, University of the Philippines Manila, Manila, 1000, Philippines
- Virology Laboratory, Department of Medical Microbiology, College of Public Health, University of the Philippines Manila, Manila 1000, Philippines
- Hawaii Center for AIDS, John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, HI 96813, USA
| | - Ourlad Alzeus Tantengco
- College of Medicine, University of the Philippines Manila, Manila, 1000, Philippines
- Department of Physiology, College of Medicine, University of the Philippines Manila, Manila 1000, Philippines
- Department of Biology, College of Science, De La Salle University, Manila 0922, Philippines
| | | | - Edward Christopher Dee
- Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, NY 10028, USA
| |
Collapse
|
3
|
Chen ZX, Liang L, Huang HQ, Li JD, He RQ, Huang ZG, Song R, Chen G, Li JJ, Cai ZW, Huang JA. LPCAT1 enhances the invasion and migration in gastric cancer: Based on computational biology methods and in vitro experiments. Cancer Med 2023. [PMID: 37184260 DOI: 10.1002/cam4.5991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 04/10/2023] [Accepted: 04/15/2023] [Indexed: 05/16/2023] Open
Abstract
BACKGROUND AND AIM The biological functions and clinical implications of lysophosphatidylcholine acyltransferase 1 (LPCAT1) remain unclarified in gastric cancer (GC). The aim of the current study was to explore the possible clinicopathological significance of LPCAT1 and its perspective mechanism in GC tissues. MATERIALS AND METHODS The protein expression and mRNA levels of LPCAT1 were detected from in-house immunohistochemistry and public high-throughput RNA arrays and RNA sequencing. To have a comprehensive understanding of the clinical value of LPCAT1 in GC, all enrolled data were integrated to calculate the expression difference and standard mean difference (SMD). The biological mechanism of LPCAT1 in GC was confirmed by computational biology and in vitro experiments. Migration and invasion assays were also conducted to confirm the effect of LPCAT1 in GC. RESULTS Both protein and mRNA expression levels of LPCAT1 in GC were remarkably higher than those in noncancerous controls. Comprehensively, the SMD of LPCAT1 mRNA was 1.11 (95% CI = 0.86-1.36) in GC, and the summarized AUC was 0.85 based on 15 datasets containing 1727 cases of GC and 940 cases of non-GC controls. Moreover, LPCAT1 could accelerate the invasion and migration of GC by boosting the neutrophil degranulation pathway and disturbing the immune microenvironment. CONCLUSION An increased level of LPCAT1 may promote the progression of GC.
Collapse
Affiliation(s)
- Zu-Xuan Chen
- Department of Medical Oncology, The Second Affiliated Hospital of Guangxi Medical University, Nanning, People's Republic of China
| | - Liang Liang
- Department of General Surgery, The Second Affiliated Hospital of Guangxi Medical University, Nanning, People's Republic of China
| | - He-Qing Huang
- Department of Radiotherapy, The First Affiliated Hospital of Guangxi Medical University, Nanning, People's Republic of China
| | - Jian-Di Li
- Department of Pathology, The First Affiliated Hospital of Guangxi Medical University, Nanning, People's Republic of China
| | - Rong-Quan He
- Department of Medical Oncology, The First Affiliated Hospital of Guangxi Medical University, Nanning, People's Republic of China
| | - Zhi-Guang Huang
- Department of Pathology, The First Affiliated Hospital of Guangxi Medical University, Nanning, People's Republic of China
| | - Rui Song
- Department of Gastroenterology, The Second Affiliated Hospital of Guangxi Medical University, Nanning, People's Republic of China
| | - Gang Chen
- Department of Pathology, The First Affiliated Hospital of Guangxi Medical University, Nanning, People's Republic of China
| | - Jian-Jun Li
- Department of General Surgery, The Second Affiliated Hospital of Guangxi Medical University, Nanning, People's Republic of China
| | - Zheng-Wen Cai
- Department of Medical Oncology, The Second Affiliated Hospital of Guangxi Medical University, Nanning, People's Republic of China
| | - Jie-An Huang
- Department of Gastroenterology, The Second Affiliated Hospital of Guangxi Medical University, Nanning, People's Republic of China
| |
Collapse
|
4
|
A Multimodal Knowledge-Based Deep Learning Approach for MGMT Promoter Methylation Identification. J Imaging 2022; 8:jimaging8120321. [PMID: 36547486 PMCID: PMC9787930 DOI: 10.3390/jimaging8120321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2022] [Revised: 11/21/2022] [Accepted: 12/01/2022] [Indexed: 12/12/2022] Open
Abstract
Glioblastoma Multiforme (GBM) is considered one of the most aggressive malignant tumors, characterized by a tremendously low survival rate. Despite alkylating chemotherapy being typically adopted to fight this tumor, it is known that O(6)-methylguanine-DNA methyltransferase (MGMT) enzyme repair abilities can antagonize the cytotoxic effects of alkylating agents, strongly limiting tumor cell destruction. However, it has been observed that MGMT promoter regions may be subject to methylation, a biological process preventing MGMT enzymes from removing the alkyl agents. As a consequence, the presence of the methylation process in GBM patients can be considered a predictive biomarker of response to therapy and a prognosis factor. Unfortunately, identifying signs of methylation is a non-trivial matter, often requiring expensive, time-consuming, and invasive procedures. In this work, we propose to face MGMT promoter methylation identification analyzing Magnetic Resonance Imaging (MRI) data using a Deep Learning (DL) based approach. In particular, we propose a Convolutional Neural Network (CNN) operating on suspicious regions on the FLAIR series, pre-selected through an unsupervised Knowledge-Based filter leveraging both FLAIR and T1-weighted series. The experiments, run on two different publicly available datasets, show that the proposed approach can obtain results comparable to (and in some cases better than) the considered competitor approach while consisting of less than 0.29% of its parameters. Finally, we perform an eXplainable AI (XAI) analysis to take a little step further toward the clinical usability of a DL-based approach for MGMT promoter detection in brain MRI.
Collapse
|
5
|
Rezaei S, Hosseinpourfeizi MA, Moaddab Y, Safaralizadeh R. Contribution of DNA methylation and EZH2 in SRBC down-regulation in gastric cancer. Mol Biol Rep 2020; 47:5721-5727. [PMID: 32676814 DOI: 10.1007/s11033-020-05619-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Accepted: 06/22/2020] [Indexed: 12/16/2022]
Abstract
Gastric cancer (GC), a high mortality malignancy, is induced by genetic and epigenetic factors. DNA and histone methylation play critical roles in tumor suppressor genes inactivation. SRBC (serum deprivation response factor-related gene product that binds to the c-kinase), suggested as a tumor suppressor gene, participates in apoptosis, tumor chemoresistance and DNA damage response and is repressed in various cancers. Inspecting the mechanisms underlying SRBC suppression is important for cancer treatments. We investigated SRBC promoter DNA methylation status and expression of SRBC and EZH2 histone methyltrasferase in gastric cancer. Also, we surveyed SRBC expression after 5-azacitidine and UNC1999 treatments of AGS cell line. In current work, we used gastric adenocarcinoma tissues, marginal samples and normal gastric biopsies. DNA methylation was detected by Methylation- Specific PCR and mRNA expression was measured by Real-Time PCR. SRBC promoter methylation analysis, showed fully and partial methylated versions that were associated with patient's age (p = 0.001). SRBC expression significantly decreased in GC compare with marginal and normal samples (p-value < 0.001). EZH2 showed remarkable up-regulation in GC than controls and demonstrated a strong inverse correlation with SRBC expression (r = - 0.69). Restoration of SRBC expression was observed after 5-azacitidine and UNC1999 applications with a remarkable increase by combinational treatment. We showed that EZH2 plays role in SRBC silencing in addition to DNA methylation. Our study, suggests that DNA methylation and EZH2 are involved in SRBC silencing and their inhibitors can be considered in cancer treatment investigations to overcome chemoresistance induced by SRBC inactivation.
Collapse
Affiliation(s)
- Shiva Rezaei
- Department of Animal Biology, Faculty of Natural Sciences, University of Tabriz, Tabriz, Iran
| | | | - Yaghoub Moaddab
- Liver and Gastroenterology Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Reza Safaralizadeh
- Department of Animal Biology, Faculty of Natural Sciences, University of Tabriz, Tabriz, Iran.
| |
Collapse
|
6
|
Wang N, Dong Q, Zhou XN. LMO4 promotes the invasion and proliferation of gastric cancer by activating PI3K-Akt-mTOR signaling. Am J Transl Res 2019; 11:6534-6543. [PMID: 31737204 PMCID: PMC6834506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Accepted: 05/21/2019] [Indexed: 06/10/2023]
Abstract
This study assessed the biological functions of LIM-domain-only 4 (LMO4) in gastric cancer (GC) and investigated the underlying molecular mechanisms. It was found that the expression of LMO4 was significantly upregulated in GC tissues and closely associated with clinicopathological factors, overall survival and disease-free survival of patients. After knockdown of LMO4 in MGC-803 and SGC-7901 cells, invasion and proliferation were obviously suppressed. Furthermore, LMO4 knockdown suppressed the phosphorylation of phosphatidylinositol 3-kinase (PI3K), Akt and mammalian target of rapamycin (mTOR). Miltefosine, the inhibitor of PI3K/Akt, and dactolisib, the inhibitor of mTOR, abrogated recombinant LMO4-induced GC cell invasion and proliferation. These results suggest that LMO4 promotes GC cell invasion and proliferation mainly through PI3K-Akt-mTOR signaling. LMO4 may serve as a potential therapeutic target for GC in the future.
Collapse
Affiliation(s)
- Ning Wang
- Department of Gastroenterology, The First Ward, Shijiazhuang First HospitalShijiazhuang 050011, Hebei, P. R. China
| | - Qing Dong
- Department of Oncology, The Fifth Ward, Shijiazhuang First HospitalShijiazhuang 050011, Hebei, P. R. China
| | - Xiao-Na Zhou
- Department of Gastroenterology, The First Ward, Shijiazhuang First HospitalShijiazhuang 050011, Hebei, P. R. China
| |
Collapse
|
7
|
Huang J, Luo JY, Tan HZ. Associations of MGMT promoter hypermethylation with squamous intraepithelial lesion and cervical carcinoma: A meta-analysis. PLoS One 2019; 14:e0222772. [PMID: 31574102 PMCID: PMC6772039 DOI: 10.1371/journal.pone.0222772] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2019] [Accepted: 09/06/2019] [Indexed: 01/06/2023] Open
Abstract
Background In this research, an meta-analysis was performed for assessment of the associations between O6-methyguanine-DNA methyltransferase (MGMT) promoter hypermethylation possessing low-grade intraepithelial lesion (LSIL), high-grade intraepithelial lesion (HSIL), cervical cancer (CC), and clinicopathological characters of CC. Methods Literature selection were conducted through searching PubMed, Web of science, EMBASE, China National Knowledge Infrastructure and Wanfang databases (up to November 2018). An assessment of associations between MGMT methylation and LSIL, HSIL, CC risk and clinicopathological characteristics was performed through pooled odds ratios (ORs) with relevant 95% confidence intervals (CIs). Subgroup analyses, meta-regressions and Galbraith plots were conducted to conduct an exploration on the possible sources of heterogeneity. The genome-wide DNA methylation array studies were extracted from Gene Expression Omnibus (GEO) databases for validation of these outcomes. Results In this meta-analysis of 25 published articles, MGMT hypermethylation gradually elevated the rates among control group (12.16%), LSIL (20.92%), HSIL (36.33%) and CC (41.50%) specimens. MGMT promoter methylation was significant associated with the increased risk of LSIL by 1.74-fold (P<0.001), HSIL by 3.71-fold (P<0.001) and CC by 7.08-fold (P<0.001) compared with control. A significant association between MGMT promoter methylation with FIGO stage was also found (OR = 2.81, 95% CI: 1.79–4.41, p<0.001). The results of GEO datasets showed that 5 CpG sites in MGMT with a great diagnostic value for the screening of cervical cancer. Conclusion The meta-analysis indicated the association between MGMT promoter hypermethylation and squamous intraepithelial lesion and cervical cancer. MGMT methylation detection might have a potential value to be an epigenetic marker for the clinical diagnosis of cervical cancer.
Collapse
Affiliation(s)
- Jin Huang
- Department of Epidemiology and Health Statistics, School of Public Health, Central South University, Changsha, Hunan, China
| | - Jia-You Luo
- Department of Women and Children Health, School of Public Health, Central South University, Changsha, Hunan, China
| | - Hong-Zhuan Tan
- Department of Epidemiology and Health Statistics, School of Public Health, Central South University, Changsha, Hunan, China
- * E-mail:
| |
Collapse
|
8
|
Song J, Li P, Yuan GH, Jia Z, Zhang RL, Wang FB, Zhong GB, Li YN, Zhong DJ. Value of of ELMO1 gene methylation detection in early diagnosis of gastric cancer. Shijie Huaren Xiaohua Zazhi 2019; 27:1055-1061. [DOI: 10.11569/wcjd.v27.i17.1055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Gastric cancer (GC) is a malignant tumor that seriously endangers human health. Its morbidity and mortality rank second and first, respectively, among malignant tumors in China. It is difficult to diagnose early. Therefore, finding new markers for GC diagnosis is very important to improve the early detection rate and prognosis of GC. At present, there are few reports on the diagnostic value of engulfment and cell motility 1 (ELMO1) gene methylation in GC.
AIM To explore the relationship between the methylation of ELMO1 gene and GC in order to provide new ideas for early diagnosis of this malignancy.
METHODS From January 2017 to August 2018, 20 cases of chronic superficial gastritis, 20 cases of chronic atrophic gastritis, and 37 cases of GC (15 cases of early GC and 22 cases of advanced GC) were selected. The gastric juice and biopsy were collected at the same time. Methylation-specific polymerase chain reaction was used to detect the methylation level of ELMO1 gene in the three groups, and the correlation between ELMO1 gene methylation and the occurrence, stage, and metastasis of GC was analyzed.
RESULTS The methylation rate of ELMO1 gene in tissues and gastric juice of chronic superficial gastritis, chronic atrophic gastritis, and GC were 0%, 20.5%, and 93.3% (P < 0.01), and 0%, 12.3%, and 76.7% (P < 0.05), respectively. The methylation rate of ELMO1 gene in adjacent tissue DNA was 96.7%, which was not significantly different from that in the GC group (P > 0.05). The methylation rates of ELMO1 gene in gastric juice of patients with early GC and advanced GC were 73.3% and 80.0%, respectively. The methylation rates of ELMO1 gene in the two tissues were 86.7% and 100%, respectively. There was no significant difference between them in both gastric juice and tissues (P > 0.05).
CONCLUSION The promoter region of ELMO1 gene in gastric juice DNA and pathological tissues of patients with GC is hypermethylated, which has high consistency. ELMO1 gene methylation can be used as a molecular target for early diagnosis of GC, and gastric juice can be used as a good clinical sample for detection of ELMO1 gene methylation.
Collapse
Affiliation(s)
- Jian Song
- Department of Digestive Endoscopy, Hainan Cancer Hospital, Haikou 570123, Hainan Province, China
| | - Ping Li
- Department of Digestive Endoscopy, Hainan Cancer Hospital, Haikou 570123, Hainan Province, China
| | - Gui-Hong Yuan
- Department of Digestive Endoscopy, Hainan Cancer Hospital, Haikou 570123, Hainan Province, China
| | - Zhen Jia
- Department of Anesthesiology, Hainan Cancer Hospital, Haikou 570123, Hainan Province, China
| | - Rong-Lin Zhang
- Department of Digestive Endoscopy, Hainan Cancer Hospital, Haikou 570123, Hainan Province, China
| | - Fa-Bao Wang
- Department of Pathology, Hainan Cancer Hospital, Haikou 570123, Hainan Province, China
| | - Guo-Bing Zhong
- Central Laboratory of Hainan Cancer Hospital, Haikou 570123, Hainan Province, China
| | - Yi-Ni Li
- Department of Digestive Endoscopy, Hainan Cancer Hospital, Haikou 570123, Hainan Province, China
| | - Dun-Jing Zhong
- Department of Digestive Endoscopy, Hainan Cancer Hospital, Haikou 570123, Hainan Province, China
| |
Collapse
|
9
|
Sokolova O, Naumann M. Crosstalk Between DNA Damage and Inflammation in the Multiple Steps of Gastric Carcinogenesis. Curr Top Microbiol Immunol 2019; 421:107-137. [PMID: 31123887 DOI: 10.1007/978-3-030-15138-6_5] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Over the last years, intensive investigations in molecular biology and cell physiology extended tremendously the knowledge about the association of inflammation and cancer. In frame of this paradigm, the human pathogen Helicobacter pylori triggers gastritis and gastric ulcer disease, and contributes to the development of gastric cancer. Mechanisms, by which the bacteria-induced inflammation in gastric mucosa leads to intestinal metaplasia and carcinoma, are represented in this review. An altered cell-signaling response and increased production of free radicals by epithelial and immune cells account for the accumulation of DNA damage in gastric mucosa, if infection stays untreated. Host genetics and environmental factors, especially diet, can accelerate the process, which offers the opportunity of intervention based on a balanced nutrition. It is supposed that inflammation might influence stem- or progenitor cells in gastric tissue predisposing for metaplasia or tumor relapse. Herein, DNA is strongly mutated and labile, which restricts therapy options. Thus, the understanding of the mechanisms that underlie gastric carcinogenesis will be of preeminent importance for the development of strategies for screening and early detection. As most gastric cancer patients face late-stage disease with a poor overall survival, the development of multi-targeted therapeutic intervention strategies is a major challenge for the future.
Collapse
Affiliation(s)
- Olga Sokolova
- Institute of Experimental Internal Medicine, Otto von Guericke University, Leipziger Str. 44, 39120, Magdeburg, Germany.
| | - Michael Naumann
- Institute of Experimental Internal Medicine, Otto von Guericke University, Leipziger Str. 44, 39120, Magdeburg, Germany
| |
Collapse
|
10
|
Qiu YS, Liao GJ, Jiang NN. REG3A overexpression suppresses gastric cancer cell invasion, proliferation and promotes apoptosis through PI3K/Akt signaling pathway. Int J Mol Med 2018; 41:3167-3174. [PMID: 29512686 PMCID: PMC5881806 DOI: 10.3892/ijmm.2018.3520] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Accepted: 02/06/2018] [Indexed: 01/26/2023] Open
Abstract
Gastric cancer (GC) is the second most common cause of cancer-related deaths. In recent years some essential factors for resolution were identified, but the clinical trials still lack the effective methods to treat or monitor the disease progression. Regenerating islet-derived 3α (REG3A) is a member of REG protein family. Previous studies have investigated the altered expression of REG3A in various cancers. In this investigtion we aimed at the biological function and the underlying molecular mechanism of REG3A in GC. We found that REG3A was significantly downregulated in GC and closely related with patient prognoses. REG3A overexpression suppressed the invasion and proliferation promoting apoptosis of GC cells. While REG3A knockdown promoted the invasion, and proliferation suppressing apoptosis of GC cells. It was further found that REG3A performed its biological functions mainly through phosphatidylinositol 3 kinase (PI3K)/Akt-GSK3β signaling pathway axis. REG3A may be a promising therapeutic strategy for GC.
Collapse
Affiliation(s)
| | - Guang-Jun Liao
- Department of Bone Tumor, Yantai Shan Hospital, Yantai, Shandong 264000, P.R. China
| | - Ning-Ning Jiang
- Department of Bone Tumor, Yantai Shan Hospital, Yantai, Shandong 264000, P.R. China
| |
Collapse
|
11
|
Wong CC, Li W, Chan B, Yu J. Epigenomic biomarkers for prognostication and diagnosis of gastrointestinal cancers. Semin Cancer Biol 2018; 55:90-105. [PMID: 29665409 DOI: 10.1016/j.semcancer.2018.04.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Revised: 04/04/2018] [Accepted: 04/10/2018] [Indexed: 12/12/2022]
Abstract
Altered epigenetic regulation is central to many human diseases, including cancer. Over the past two decade, major advances have been made in our understanding of the role of epigenetic alterations in carcinogenesis, particularly for DNA methylation, histone modifications and non-coding RNAs. Aberrant hypermethylation of DNA at CpG islands is a well-established phenomenon that mediates transcriptional silencing of tumor suppressor genes, and it is an early event integral to gastrointestinal cancer development. As such, detection of aberrant DNA methylation is being developed as biomarkers for prognostic and diagnostic purposes in gastrointestinal cancers. Diverse tissue types are suitable for the analyses of methylated DNA, such as tumor tissues, blood, plasma, and stool, and some of these markers are already utilized in the clinical setting. Recent advances in the genome-wide epigenomic approaches are enabling the comprehensive mapping of the cancer methylome, thus providing new avenues for mining novel biomarkers for disease prognosis and diagnosis. Here, we review the current knowledge on DNA methylation biomarkers for the prognostication and non-invasive diagnosis of gastrointestinal cancers and highlight their clinical application.
Collapse
Affiliation(s)
- Chi Chun Wong
- Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, CUHK Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong.
| | - Weilin Li
- Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, CUHK Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong; Department of Surgery, The Chinese University of Hong Kong, Hong Kong
| | - Bertina Chan
- Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, CUHK Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong
| | - Jun Yu
- Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, CUHK Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong.
| |
Collapse
|
12
|
Gene methylation as a powerful biomarker for detection and screening of non-small cell lung cancer in blood. Oncotarget 2018; 8:31692-31704. [PMID: 28404957 PMCID: PMC5458240 DOI: 10.18632/oncotarget.15919] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2016] [Accepted: 01/10/2017] [Indexed: 11/25/2022] Open
Abstract
DNA methylation has been reported to become a potential powerful tool for cancer detection and diagnosis. However, the possibilities for the application of blood-based gene methylation as a biomarker for non-small cell lung cancer (NSCLC) detection and screening remain unclear. Hence, we performed this meta-analysis to evaluate the value of gene methylation detected in blood samples as a noninvasive biomarker in NSCLC. A total of 28 genes were analyzed from 37 case-control studies. In the genes with more than three studies, we found that the methylation of P16, RASSF1A, APC, RARβ, DAPK, CDH13, and MGMT was significantly associated with risks of NSCLC. The methylation statuses of P16, RASSF1A, APC, RARβ, DAPK, CDH13, and MGMT were not linked to age, gender, smoking behavior, and tumor stage and histology in NSCLC. Therefore, the use of the methylation status of P16, RASSF1A, APC, RARβ, DAPK, CDH13, and MGMT could become a promising and powerful biomarker for the detection and screening of NSCLC in blood in clinical settings. Further large-scale studies with large sample sizes are necessary to confirm our findings in the future.
Collapse
|
13
|
Qiu YS, Jiang NN, Zhou Y, Yu KY, Gong HY, Liao GJ. LMO3 promotes gastric cancer cell invasion and proliferation through Akt-mTOR and Akt-GSK3β signaling. Int J Mol Med 2018; 41:2755-2763. [PMID: 29436606 PMCID: PMC5846634 DOI: 10.3892/ijmm.2018.3476] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Accepted: 01/31/2018] [Indexed: 12/22/2022] Open
Abstract
The present study assessed the biological functions of LIM domain only 3 (LMO3) in gastric cancer (GC) investigated and the underlying molecular mechanisms. It was revealed that the expression of LMO3 was significantly upregulated in GC tissues. A GC tissue microarray (n=164) indicated that LMO3 expression was closely associated with clinicopathological factors, as well as overall survival and disease-free survival of patients. After knockdown of LMO3 in MGC-803 and SGC-7901 cells, the invasion and proliferation were obviously suppressed. Furthermore, LMO3 knockdown suppressed the phosphorylation of Akt, mammalian target of rapamycin (mTOR) and glycogen synthase kinase (GSK)3β signaling. An inhibitor of mTOR, dactolisib, abrogated recombinant LMO3 protein-induced GC cell invasion and proliferation, while an inhibitor of GSK3β, CHIR-98014, only abrogated rLMO3 protein-induced proliferation. These results suggested that LMO3 promotes GC cell invasion and proliferation mainly through Akt/mTOR and Akt/GSK3β signaling. LMO3 may serve as a potential therapeutic target for GC in the future.
Collapse
Affiliation(s)
- Yan-Song Qiu
- Department of General Surgery, Yantai Mountain Hospital, Yantai, Shandong 264000, P.R. China
| | - Ning-Ning Jiang
- Department of General Surgery, Yantai Mountain Hospital, Yantai, Shandong 264000, P.R. China
| | - Yan Zhou
- Department of General Surgery, Yantai Mountain Hospital, Yantai, Shandong 264000, P.R. China
| | - Kuai-Yun Yu
- Department of General Surgery, Yantai Mountain Hospital, Yantai, Shandong 264000, P.R. China
| | - Hong-Yan Gong
- Department of General Surgery, Yantai Mountain Hospital, Yantai, Shandong 264000, P.R. China
| | - Guang-Jun Liao
- Department of Bone Tumors, Yantai Mountain Hospital, Yantai, Shandong 264000, P.R. China
| |
Collapse
|
14
|
Qiu YS, Liao GJ, Jiang NN. DNA Methylation-Mediated Silencing of Regenerating Protein 1 Alpha (REG1A) Affects Gastric Cancer Prognosis. Med Sci Monit 2017; 23:5834-5843. [PMID: 29222406 PMCID: PMC5737223 DOI: 10.12659/msm.904706] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Background Gastric cancer (GC) is one of the most common cause of cancer-related deaths. The clinical trials still lack the effective methods to treat or monitor the disease progression. In this research, the biological function and the underlying molecular mechanism of regenerating protein 1 alpha (REG1A) in GC were investigated. Material/Methods Gene expression omnibus (GEO), KMplot datasets and GC tissue microarray (n=164) were used to analyze the expression of REG1A and related patient prognoses in GC. Transwell matrigel assay, flow cytometry analysis and CCK8 cell viability assay were performed to detect the biological functions of REG1A. Western blotting and real-time PCR were used to detect the REG1A expression and PI3K/Akt related signaling. Results It was found that the expression of REG1A was significantly downregulated in GC and closely related with clinicopathological findings or patient prognoses. REG1A overexpression could suppress the invasion, cell viability and promote the apoptosis of GC cells. Moreover, we found that the epigenetic methylation suppressed the expression level of REG1A in GC, and REG1A overexpression could suppress the phosphorylation of Akt or GSK3β signaling. Conclusions Taken together, REG1A regulates cell invasion, apoptosis and viability in GC through activating PI3K/Akt-GSK3β signaling. REG1A may serve as a promising therapeutic strategy for GC.
Collapse
Affiliation(s)
- Yan-Song Qiu
- Department of General Surgery, Yantai Mountain Hospital, Yantai, Shandong, China (mainland)
| | - Guang-Jun Liao
- Department of Bone Tumor, Yantai Mountain Hospital, Yantai, Shandong, China (mainland)
| | - Ning-Ning Jiang
- Department of Bone Tumor, Yantai Mountain Hospital, Yantai, Shandong, China (mainland)
| |
Collapse
|
15
|
Pan L, Liang W, Gu J, Zang X, Huang Z, Shi H, Chen J, Fu M, Zhang P, Xiao X, Qian H, Xu W, Jiang P, Zhang X. Long noncoding RNA DANCR is activated by SALL4 and promotes the proliferation and invasion of gastric cancer cells. Oncotarget 2017; 9:1915-1930. [PMID: 29416741 PMCID: PMC5788609 DOI: 10.18632/oncotarget.23019] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Accepted: 11/17/2017] [Indexed: 12/30/2022] Open
Abstract
Long noncoding RNAs (LncRNAs) play important roles in tumor development and progression. The expression of lncRNAs is frequently dysregulated in human cancer. DANCR (anti-differentiation noncoding RNA) is a newly identified lncRNA in human cancer, however, its functional roles and clinical value in gastric cancer (GC) remains unknown. In this study, we investigated the expression of DANCR in the tumor tissues and serum of GC patients and analyzed the correlation between DANCR expression levels and the clinicopathological characteristics. Our results showed that the expression of DANCR was higher in the tumor tissues than that in the adjacent non-cancerous tissues. The expression level of DANCR was also elevated in the serum of GC patients compared to that of healthy controls. The expression levels of DANCR were significantly associated with tumor size, TNM stage, lymphatic metastasis and invasion depth. DANCR knockdown inhibited the proliferation of GC cells by inducing cell cycle arrest and cell apoptosis. In addition, DANCR knockdown suppressed gastric cancer growth in vivo. Moreover, DANCR knockdown inhibited the migration and invasion of GC cells via the suppression of epithelial-mesenchymal transition (EMT). However, DANCR overexpression had the opposite effect. DANCR is activated by SALL4 in gastric cancer cells and exerted its oncogenic activities through the activation of β-catenin pathway. Taken together, our findings suggest that DANCR promotes the progression of gastric cancer and have the potential to serve as a novel diagnostic biomarker.
Collapse
Affiliation(s)
- Lei Pan
- Department of Breast Surgery, The Affiliated People's Hospital of Jiangsu University, Zhenjiang, Jiangsu 212002, China.,Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Wei Liang
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Jianmei Gu
- Department of Clinical Laboratory, Nantong Tumor Hospital, Nantong, Jiangsu 226361, China
| | - Xueyan Zang
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Zhenhua Huang
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu 212013, China.,Institute of Digestive Diseases, The Affiliated People's Hospital of Jiangsu University, Zhenjiang, Jiangsu 212002, China
| | - Hui Shi
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Jingyan Chen
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Min Fu
- Institute of Digestive Diseases, The Affiliated People's Hospital of Jiangsu University, Zhenjiang, Jiangsu 212002, China.,Department of General Surgery, The Affiliated People's Hospital of Jiangsu University, Zhenjiang, Jiangsu 212002, China
| | - Peng Zhang
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Xiudi Xiao
- Department of Breast Surgery, The Affiliated People's Hospital of Jiangsu University, Zhenjiang, Jiangsu 212002, China
| | - Hui Qian
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Wenrong Xu
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Pengcheng Jiang
- Institute of Digestive Diseases, The Affiliated People's Hospital of Jiangsu University, Zhenjiang, Jiangsu 212002, China.,Department of General Surgery, The Affiliated People's Hospital of Jiangsu University, Zhenjiang, Jiangsu 212002, China
| | - Xu Zhang
- Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu 212013, China.,Institute of Digestive Diseases, The Affiliated People's Hospital of Jiangsu University, Zhenjiang, Jiangsu 212002, China
| |
Collapse
|
16
|
Lu X, Yu Y, Tan S. p53 expression in patients with ulcerative colitis - associated with dysplasia and carcinoma: a systematic meta-analysis. BMC Gastroenterol 2017; 17:111. [PMID: 29070013 PMCID: PMC5655860 DOI: 10.1186/s12876-017-0665-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2017] [Accepted: 10/03/2017] [Indexed: 02/08/2023] Open
Abstract
Background Tumor suppressor gene p53 expression has been reported in patients with ulcerative colitis (UC). However, the correlation between p53 expression and UC remains controversial. The aim of this meta-analysis was to investigate the association between p53 expression and different pathological types of UC. Methods Publications were searched in the PubMed, Embase, EBSCO, Wangfang, and CNKI databases. The overall odds ratios (ORs) and their corresponding 95% confidence intervals (95% CIs) were summarized in this study. Results Final 19 papers were identified in this meta-analysis, including 1068 patients with UC and 130 normal tissue samples. Immunohistochemical p53 expression was significantly higher in UC without dysplasia and carcinoma (UC group) compared to normal tissue samples (OR = 3.14, P = 0.001), higher in UC with dysplasia than in UC group (OR = 10.76, P < 0.001), and higher in UC with colorectal cancer (CRC) than in UC with dysplasia (OR = 1.69, P = 0.035). Subgroup analysis of ethnicity (UC group vs. normal tissues) showed that p53 expression was correlated with UC in Asians, but not in Caucasians. When UC with dysplasia was compared to UC group, p53 expression was linked to UC with dysplasia among both Asians and Caucasians. When UC-CRC was compared to UC with dysplasia, p53 expression was not associated with UC-CRC in both Caucasians and Asians. Conclusions p53 expression was closely associated with UC-CRC development. p53 expression showed different ethnic characteristics among different pathological types of UC. Electronic supplementary material The online version of this article (10.1186/s12876-017-0665-y) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Xiaohong Lu
- Departmemt of gastroenterology, Renmin Hospital of Wuhan University, Jiefang Road 238, Wuhan, 430060, China.
| | - Yuanjie Yu
- Departmemt of gastroenterology, Renmin Hospital of Wuhan University, Jiefang Road 238, Wuhan, 430060, China
| | - Shiyun Tan
- Departmemt of gastroenterology, Renmin Hospital of Wuhan University, Jiefang Road 238, Wuhan, 430060, China
| |
Collapse
|