1
|
Wang F, Wu J, Qiu Z, Ge X, Liu X, Zhang C, Xu W, Wang F, Hua D, Qi X, Mao Y. ACOT1 expression is associated with poor prognosis in gastric adenocarcinoma. Hum Pathol 2018; 77:35-44. [PMID: 29555575 DOI: 10.1016/j.humpath.2018.03.013] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2018] [Revised: 03/04/2018] [Accepted: 03/09/2018] [Indexed: 02/06/2023]
Abstract
Acyl-CoA thioesterase 1 (ACOT1) is an important isoform of the ACOT family that catalyzes the reaction of fatty acyl-CoAs to CoA-SH and free fatty acids. Recent studies of gastrointestinal tumor metabolism suggest that there is abnormal metabolism of lipids and fatty acids during tumor progression. However, the function and contribution of ACOT1 in gastric cancer development are still poorly understood. In addition, GLI3 is a major transcription factor in the regulation of hedgehog signaling. GLI3 mutations induce glandular expansion and intestinal metaplasia in gastric cancer, which indicates a role for GLI3 in the preneoplastic process. Thus, we investigated the relationship between ACOT1 expression and GLI3 in gastric adenocarcinoma. A tissue microarray was constructed from 280 cases of gastric adenocarcinoma. The immunohistochemistry method was performed on tissue sections of 4 μm from each tissue microarray block. We found a significant correlation between ACOT1 expression and poor histologic grade, a lower T category, TNM stage, and increased GLI3 expression. In addition, the survival analysis revealed that the ACOT1-positive group had significantly decreased overall survival rates compared with the ACOT1-negative group. Furthermore, GLI3 expression had a significant positive correlation with ACOT1 expression in gastric adenocarcinoma cells. In summary, these findings demonstrate that increased expression of ACOT1 is correlated with pivotal clinicopathological parameters and poor prognosis in gastric adenocarcinoma through increased expression of the potential tumor-promoting protein GLI3.
Collapse
Affiliation(s)
- Fang Wang
- Department of Oncology, Affiliated Hospital of Jiangnan University, Wuxi, China, 214062; Jiangnan University School of Medicine, Wuxi, China, 214000
| | - Jingyi Wu
- Department of Oncology, Affiliated Hospital of Jiangnan University, Wuxi, China, 214062; Jiangnan University School of Medicine, Wuxi, China, 214000
| | - Zhichao Qiu
- Department of Oncology, Affiliated Hospital of Jiangnan University, Wuxi, China, 214062; Jiangnan University School of Medicine, Wuxi, China, 214000
| | - Xiaosong Ge
- Department of Oncology, Affiliated Hospital of Jiangnan University, Wuxi, China, 214062
| | - Xingxiang Liu
- Department of Oncology, Second People's Hospital of Taizhou City, Taizhou, China, 225300
| | - Chun Zhang
- Jiangnan University School of Medicine, Wuxi, China, 214000
| | - Wenhuan Xu
- Department of Oncology, Affiliated Hospital of Jiangnan University, Wuxi, China, 214062
| | - Fengming Wang
- Blood Center of Changzhou City, Changzhou, China, 213000
| | - Dong Hua
- Department of Oncology, Affiliated Hospital of Jiangnan University, Wuxi, China, 214062
| | - Xiaowei Qi
- Department of Pathology, Affiliated Hospital of Jiangnan University, Wuxi, China, 214062.
| | - Yong Mao
- Department of Oncology, Affiliated Hospital of Jiangnan University, Wuxi, China, 214062.
| |
Collapse
|
2
|
Lin YL, Pavlidis P, Karakoc E, Ajay J, Gokcumen O. The evolution and functional impact of human deletion variants shared with archaic hominin genomes. Mol Biol Evol 2015; 32:1008-19. [PMID: 25556237 PMCID: PMC4379406 DOI: 10.1093/molbev/msu405] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Allele sharing between modern and archaic hominin genomes has been variously interpreted to have originated from ancestral genetic structure or through non-African introgression from archaic hominins. However, evolution of polymorphic human deletions that are shared with archaic hominin genomes has yet to be studied. We identified 427 polymorphic human deletions that are shared with archaic hominin genomes, approximately 87% of which originated before the Human–Neandertal divergence (ancient) and only approximately 9% of which have been introgressed from Neandertals (introgressed). Recurrence, incomplete lineage sorting between human and chimp lineages, and hominid-specific insertions constitute the remaining approximately 4% of allele sharing between humans and archaic hominins. We observed that ancient deletions correspond to more than 13% of all common (>5% allele frequency) deletion variation among modern humans. Our analyses indicate that the genomic landscapes of both ancient and introgressed deletion variants were primarily shaped by purifying selection, eliminating large and exonic variants. We found 17 exonic deletions that are shared with archaic hominin genomes, including those leading to three fusion transcripts. The affected genes are involved in metabolism of external and internal compounds, growth and sperm formation, as well as susceptibility to psoriasis and Crohn’s disease. Our analyses suggest that these “exonic” deletion variants have evolved through different adaptive forces, including balancing and population-specific positive selection. Our findings reveal that genomic structural variants that are shared between humans and archaic hominin genomes are common among modern humans and can influence biomedically and evolutionarily important phenotypes.
Collapse
Affiliation(s)
- Yen-Lung Lin
- Department of Biological Sciences, State University of New York at Buffalo, NY, US
| | - Pavlos Pavlidis
- Institute of Molecular Biology and Biotechnology (IMBB), Foundation of Research and Technology-Hellas, Heraklion, Crete, Greece
| | - Emre Karakoc
- Department of Evolutionary Genetics, Max Planck Institute for Evolutionary Biology, Plön, Germany
| | - Jerry Ajay
- Department of Computer Science and Engineering, State University of New York at Buffalo, NY, US
| | - Omer Gokcumen
- Department of Biological Sciences, State University of New York at Buffalo, NY, US
| |
Collapse
|