1
|
Cui Y, Chen F, Gao J, Lei M, Wang D, Jin X, Guo Y, Shan L, Chen X. Comprehensive landscape of the renin-angiotensin system in Pan-cancer: a potential downstream mediated mechanism of SARS-CoV-2. Int J Biol Sci 2021; 17:3795-3817. [PMID: 34671200 PMCID: PMC8495399 DOI: 10.7150/ijbs.53312] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Accepted: 08/06/2021] [Indexed: 11/23/2022] Open
Abstract
Background: SARS-CoV-2, the cause of the worldwide COVID-19 pandemic, utilizes the mechanism of binding to ACE2 (a crucial component of the renin-angiotensin system [RAS]), subsequently mediating a secondary imbalance of the RAS family and leading to severe injury to the host. However, very few studies have been conducted to reveal the mechanism behind the effect of SARS-CoV-2 on tumors. Methods: Demographic data extracted from 33 cancer types and over 10,000 samples were employed to determine the comprehensive landscape of the RAS. Expression distribution, pretranscriptional and posttranscriptional regulation and posttranslational modifications (PTMs) as well as genomic alterations, DNA methylation and m6A modification were analyzed in both tissue and cell lines. The clinical phenotype, prognostic value and significance of the RAS during immune infiltration were identified. Results: Low expression of AGTR1 was common in tumors compared to normal tissues, while very low expression of AGTR2 and MAS1 was detected in both tissues and cell lines. Differential expression patterns of ACE in ovarian serous cystadenocarcinoma (OV) and kidney renal clear cell carcinoma (KIRC) were correlated with ubiquitin modification involving E3 ligases. Genomic alterations of the RAS family were infrequent across TCGA pan-cancer program, and ACE had the highest alteration frequency compared with other members. Low expression of AGTR1 may result from hypermethylation in the promoter. Downregulation of RAS family was linked to higher clinical stage and worse survival (as measured by disease-specific survival [DSS], overall survival [OS] or progression-free interval [PFI]), especially for ACE2 and AGTR1 in KIRC. ACE-AGTR1, a classical axis of the RAS family related to immune infiltration, was positively correlated with M2-type macrophages, cancer-associated fibroblasts (CAFs) and immune checkpoint genes in most cancers. Conclusion: ACE, ACE2, AGT and AGTR1 were differentially expressed in 33 types of cancers. PTM of RAS family was found to rely on ubiquitination. ACE2 and AGTR1 might serve as independent prognostic factors for LGG and KIRC. SARS-CoV-2 might modify the tumor microenvironment by regulating the RAS family, thus affecting the biological processes of cancer.
Collapse
Affiliation(s)
- Yuqing Cui
- The Fourth Department of Medical Oncology, Harbin Medical University Cancer Hospital, Harbin 150040, China
| | - Fengzhi Chen
- The Fourth Department of Medical Oncology, Harbin Medical University Cancer Hospital, Harbin 150040, China
| | - Jiayi Gao
- The Fourth Department of Medical Oncology, Harbin Medical University Cancer Hospital, Harbin 150040, China
| | - Mengxia Lei
- The Fourth Department of Medical Oncology, Harbin Medical University Cancer Hospital, Harbin 150040, China
| | - Dandan Wang
- The Fourth Department of Medical Oncology, Harbin Medical University Cancer Hospital, Harbin 150040, China
| | - Xiaoying Jin
- The Fourth Department of Medical Oncology, Harbin Medical University Cancer Hospital, Harbin 150040, China
| | - Yan Guo
- The Fourth Department of Medical Oncology, Harbin Medical University Cancer Hospital, Harbin 150040, China
| | - Liying Shan
- The Fourth Department of Medical Oncology, Harbin Medical University Cancer Hospital, Harbin 150040, China
| | - Xuesong Chen
- The Fourth Department of Medical Oncology, Harbin Medical University Cancer Hospital, Harbin 150040, China
| |
Collapse
|
2
|
Hu H, Kong Q, Huang XX, Zhang HR, Hu KF, Jing Y, Jiang YF, Peng Y, Wu LC, Fu QS, Xu L, Xia YB. Longnon-coding RNA BLACAT2 promotes gastric cancer progression via the miR-193b-5p/METTL3 pathway. J Cancer 2021; 12:3209-3221. [PMID: 33976730 PMCID: PMC8100803 DOI: 10.7150/jca.50403] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Accepted: 02/13/2021] [Indexed: 12/23/2022] Open
Abstract
Gastric cancer is one of the leading prevalent and malignant cancers worldwide, especially in east Asia. However, the in-depth molecular mechanism underlying gastric cancer progression remains uncertain. Recently, studies have identified that long non-coding RNA (lncRNA) could play critical roles in the tumorigenesis of multiple types of cancer. Studies on long non-coding RNA BLACAT2 have proven that it participates in bladder cancer and colorectal cancer regulation and was identified as highly expressed using the cBioPortal for Cancer Genomics in gastric cancer. However, the precise function of lncRNA-BLACAT2 in the carcinogenesis and progression of gastric cancer remains largely unexplored. Our study discovered that lncRNA-BLACAT2 was significantly upregulated in gastric cancer. Different studies have illustrated that BLACAT2 promoted gastric cancer progression through regulating proliferation, migration, invasion, and apoptosis in terms of biological function. Furthermore, BLACAT2 was verified to perform its function through interaction with miR-193b-5p using a luciferase reporter assay. On the other hand, MiR-193b-5p specific inhibitor treatment reversed the inhibitory effect of BLACAT2 on cell biological functions. Additional studies also discovered that Methyltransferase Like 3 (METTL3) was the downstream target of miR-193b-5p. Subsequently, restoration of METTL3 eliminated the suppressive effect of proliferation or the promotive effect of apoptosis caused by BLACAT2 knockdown. To sum up, these experimental results demonstrated that BLACAT2 acted as an oncogene in gastric cancer progression through the regulation of the miR-193b-5p/METTL3 pathway, hence providing new insights regarding the pathogenesis of gastric cancer.
Collapse
Affiliation(s)
- Hao Hu
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Wannan Medical College, Wuhu, AnHui, 241001, P.R. China
| | - Qi Kong
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Wannan Medical College, Wuhu, AnHui, 241001, P.R. China
| | - Xiao-Xu Huang
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Wannan Medical College, Wuhu, AnHui, 241001, P.R. China
| | - Hao-Ran Zhang
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Wannan Medical College, Wuhu, AnHui, 241001, P.R. China
| | - Kai-Feng Hu
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Wannan Medical College, Wuhu, AnHui, 241001, P.R. China
| | - Yan Jing
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Wannan Medical College, Wuhu, AnHui, 241001, P.R. China
| | - Yang-Fan Jiang
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Wannan Medical College, Wuhu, AnHui, 241001, P.R. China.,Wannan Medical College, Wuhu, AnHui, 241001, P.R. China
| | - Yue Peng
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Wannan Medical College, Wuhu, AnHui, 241001, P.R. China.,Wannan Medical College, Wuhu, AnHui, 241001, P.R. China
| | - Long-Chao Wu
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Wannan Medical College, Wuhu, AnHui, 241001, P.R. China.,Wannan Medical College, Wuhu, AnHui, 241001, P.R. China
| | - Qi-Sheng Fu
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Wannan Medical College, Wuhu, AnHui, 241001, P.R. China
| | - Li Xu
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Wannan Medical College, Wuhu, AnHui, 241001, P.R. China
| | - Ya-Bin Xia
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Wannan Medical College, Wuhu, AnHui, 241001, P.R. China
| |
Collapse
|
3
|
Liao Z, Nie H, Wang Y, Luo J, Zhou J, Ou C. The Emerging Landscape of Long Non-Coding RNAs in Colorectal Cancer Metastasis. Front Oncol 2021; 11:641343. [PMID: 33718238 PMCID: PMC7947863 DOI: 10.3389/fonc.2021.641343] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Accepted: 01/29/2021] [Indexed: 12/11/2022] Open
Abstract
Colorectal cancer (CRC) is one of the most common gastrointestinal cancers, with extremely high rates of morbidity and mortality. The main cause of death in CRC is distant metastasis; it affects patient prognosis and survival and is one of the key challenges in the treatment of CRC. Long non-coding RNAs (lncRNAs) are a group of non-coding RNA molecules with more than 200 nucleotides. Abnormal lncRNA expression is closely related to the occurrence and progression of several diseases, including cancer. Recent studies have shown that numerous lncRNAs play pivotal roles in the CRC metastasis, and reversing the expression of these lncRNAs through artificial means can reduce the malignant phenotype of metastatic CRC to some extent. This review summarizes the major mechanisms of lncRNAs in CRC metastasis and proposes lncRNAs as potential therapeutic targets for CRC and molecular markers for early diagnosis.
Collapse
Affiliation(s)
- Zhiming Liao
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, China
| | - Hui Nie
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, China
| | - Yutong Wang
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, China
| | - Jingjing Luo
- Teaching and Research Room of Biochemistry and Molecular Biology, Medical School of Hunan University of Traditional Chinese Medicine, Changsha, China
| | - Jianhua Zhou
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Chunlin Ou
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| |
Collapse
|