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Shao L, Li B. Synaptotagmin 13 Could Drive the Progression of Esophageal Squamous Cell Carcinoma Through Upregulating ACRV1. DNA Cell Biol 2024. [PMID: 39046915 DOI: 10.1089/dna.2024.0106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/27/2024] Open
Abstract
SYT13 is one of the atypical members of the synaptotagmin (SYT) family whose function has attracted considerable attention in recent years. Although SYT13 has been studied in several types of human cancers, such as lung cancer, its role in esophageal squamous cell carcinoma (ESCC) is still unclear. It was demonstrated that SYT13 is significantly upregulated in ESCC tissues compared with normal ones and correlated with higher degree of malignancy. Knockdown of SYT13 could inhibit ESCC cell proliferation and migration, while promoting cell apoptosis. Meanwhile, ESCC cells with relatively lower SYT13 expression grew slower in vivo and finally formed smaller xenografts. Furthermore, acrosomal vesicular protein 1 was identified as a potential downstream target of SYT13, which regulates cell phenotypes of ESCC cells in cooperation with SYT13. All the in vitro and in vivo results in this study identified that SYT13 silencing could be an effective strategy to inhibit the development of ESCC, which could be considered as a promising therapeutic target in the treatment of ESCC.
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Affiliation(s)
- Longlong Shao
- Department of Thoracic Surgery, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Bin Li
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
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Sun T, Han Y, Li JL, Wang S, Jing ZJ, Yan Z, Zhou L, Zuo L, Yang JL, Cao JM. Synaptotagmin-7 mediates cardiac hypertrophy by targeting autophagy. FEBS J 2024; 291:489-509. [PMID: 37724442 DOI: 10.1111/febs.16961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 09/03/2023] [Accepted: 09/18/2023] [Indexed: 09/20/2023]
Abstract
Sustained cardiac hypertrophy damages the heart and weakens cardiac function, often leading to heart failure and even death. Pathological cardiac hypertrophy has become a central therapeutic target for many heart diseases including heart failure. However, the underlying mechanisms of cardiac hypertrophy, especially the involvement of autophagy program, are still ill-understood. Synaptotagmin-7 (Syt7), a multifunctional and high-affinity calcium sensor, plays a pivotal role in asynchronous neurotransmitter release, synaptic facilitation, and vesicle pool regulation during synaptic transmission. However, little is known about whether Syt7 is expressed in the myocardium and involved in the pathogenesis of heart diseases. Here we showed that Syt7 was significantly upregulated in Ang II-treated hearts and cardiomyocytes. Homozygous syt7 knockout (syt7-/-) mice exhibited significantly attenuated cardiac hypertrophy and fibrosis and improved cardiac function. We further found that Syt7 exerted a pro-hypertrophic effect by suppressing the autophagy process. In exploring the upstream mechanisms, microRNA (miR)-93 was identified to participate in the regulation of Syt7 expression. miR-93 protected hearts against Ang II-induced hypertrophy through targeting Syt7-autophagy pathway. In summary, our data reveal a new cardiac hypertrophy regulator and a novel hypertrophy regulating model composed of miR-93, Syt7 and autophagy program. These molecules may serve as potential therapeutic targets in the treatment of cardiac hypertrophy and heart failure.
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Affiliation(s)
- Teng Sun
- Key Laboratory of Cellular Physiology at Shanxi Medical University, Ministry of Education, Key Laboratory of Cellular Physiology of Shanxi Province, Taiyuan, China
- Department of Physiology, Shanxi Medical University, Taiyuan, China
| | - Yu Han
- Key Laboratory of Cellular Physiology at Shanxi Medical University, Ministry of Education, Key Laboratory of Cellular Physiology of Shanxi Province, Taiyuan, China
- Department of Physiology, Shanxi Medical University, Taiyuan, China
| | - Jia-Lei Li
- Key Laboratory of Cellular Physiology at Shanxi Medical University, Ministry of Education, Key Laboratory of Cellular Physiology of Shanxi Province, Taiyuan, China
- Department of Physiology, Shanxi Medical University, Taiyuan, China
| | - Shuang Wang
- Key Laboratory of Cellular Physiology at Shanxi Medical University, Ministry of Education, Key Laboratory of Cellular Physiology of Shanxi Province, Taiyuan, China
- Department of Physiology, Shanxi Medical University, Taiyuan, China
| | - Zhi-Jie Jing
- Laboratory Animal Research Center of Shanxi Medical University, Taiyuan, China
| | - Zi Yan
- Key Laboratory of Cellular Physiology at Shanxi Medical University, Ministry of Education, Key Laboratory of Cellular Physiology of Shanxi Province, Taiyuan, China
- Department of Physiology, Shanxi Medical University, Taiyuan, China
| | - Lan Zhou
- Key Laboratory of Cellular Physiology at Shanxi Medical University, Ministry of Education, Key Laboratory of Cellular Physiology of Shanxi Province, Taiyuan, China
- Department of Physiology, Shanxi Medical University, Taiyuan, China
| | - Lin Zuo
- Key Laboratory of Cellular Physiology at Shanxi Medical University, Ministry of Education, Key Laboratory of Cellular Physiology of Shanxi Province, Taiyuan, China
- Department of Physiology, Shanxi Medical University, Taiyuan, China
| | - Jun-Li Yang
- Computer Teaching Department, Shanxi Medical University, Taiyuan, China
| | - Ji-Min Cao
- Key Laboratory of Cellular Physiology at Shanxi Medical University, Ministry of Education, Key Laboratory of Cellular Physiology of Shanxi Province, Taiyuan, China
- Department of Physiology, Shanxi Medical University, Taiyuan, China
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Samanta A, Saha P, Johnson O, Bishayee A, Sinha D. Dysregulation of delta Np63 alpha in squamous cell carcinoma and its therapeutic targeting. Biochim Biophys Acta Rev Cancer 2024; 1879:189034. [PMID: 38040268 DOI: 10.1016/j.bbcan.2023.189034] [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: 08/08/2023] [Revised: 11/05/2023] [Accepted: 11/23/2023] [Indexed: 12/03/2023]
Abstract
The gene p63 has two isoforms -a full length transactivated isoform (TA) p63 and an amino-terminally truncated isoform, ∆Np63. DeltaNp63 alpha (∆Np63α) is the predominant splice variant of the isoform, ∆Np63 and is expressed in the basal layer of stratified epithelia. ∆Np63α that is normally essential for the epithelial lineage maintenance may be dysregulated in squamous cell carcinomas (SCCs). The pro-tumorigenic or antitumorigenic role of ∆Np63 is a highly contentious arena. ∆Np63α may act as a double-edged sword. It may either promote tumor progression, epithelial-mesenchymal transition, migration, chemoresistance, and immune-inflammatory responses, or inhibit the aforementioned phenomena depending upon cell type and tumor microenvironment. Several signaling pathways, transforming growth factor-β, Wnt and Notch, as well as epigenetic alterations involving microRNAs, and long noncoding RNAs are regulated by ∆Np63α. This review has attempted to provide an in-depth insight into the role of ∆Np63α in the development of SCCs during different stages of tumor formation and how it may be targeted for therapeutic implications.
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Affiliation(s)
- Anurima Samanta
- Department of Receptor Biology and Tumor Metastasis, Chittaranjan National Cancer Institute, Kolkata 700 026, West Bengal, India
| | - Priyanka Saha
- Department of Receptor Biology and Tumor Metastasis, Chittaranjan National Cancer Institute, Kolkata 700 026, West Bengal, India
| | - Olivia Johnson
- College of Osteopathic Medicine, Lake Erie College of Osteopathic Medicine, Bradenton, FL 34211, USA
| | - Anupam Bishayee
- College of Osteopathic Medicine, Lake Erie College of Osteopathic Medicine, Bradenton, FL 34211, USA.
| | - Dona Sinha
- Department of Receptor Biology and Tumor Metastasis, Chittaranjan National Cancer Institute, Kolkata 700 026, West Bengal, India.
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Guo Y, Hu G, Tian B, Ma M, Long F, Chen M. Circ_RNF13 Regulates the Stemness and Chemosensitivity of Colorectal Cancer by Transcriptional Regulation of DDX27 Mediated by TRIM24 Stabilization. Cancers (Basel) 2022; 14:cancers14246218. [PMID: 36551703 PMCID: PMC9776557 DOI: 10.3390/cancers14246218] [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: 10/20/2022] [Revised: 11/28/2022] [Accepted: 11/28/2022] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Colorectal cancer (CRC) is one of the most commonly diagnosed cancers with high incidence and poor prognosis worldwide. Circ_RNF13 is upregulated in CRC; however, the biological roles and downstream signaling of circ_RNF13 remain undefined. METHODS The characterization of circ_RNF13 was determined by Sanger sequencing, qRT-PCR, subcellular fractionation assay, and RNA FISH. Western blot analysis and qRT-PCR were employed to detect the expression of the key molecules and stemness markers in CRC tumor samples and cells. The stem-like activities of CRC cells were assessed by sphere formation assay, flow cytometry, and immunofluorescence (IF). Cell viability was monitored by CCK-8 assay. The chemosensitivity of CRC cells was assessed by colony formation and cell apoptosis assays. Bioinformatics analysis, RIP assay, RNA pull-down assay, and FISH/IF staining were used to detect the association between circ_RNF13 and TRIM24. The transcriptional regulation of DDX27 was investigated by ChIP assay, and the post-translational regulation of TRIM24 was detected by Co-IP. The in vitro findings were verified in a xenograft model. RESULTS circ_RNF13 and DDX27 were elevated in CRC tumor samples and cells. Knockdown of circ_RNF13 or DDX27 inhibited stemness and increased chemosensitivity in CRC cells. Mechanistically, circ_RNF13 regulated DDX27 expression via TRIM24-mediated transcriptional regulation, and circ_RNF13 stabilized TRIM24 via suppressing FBXW7-mediated TRIM24 degradation. In vivo studies revealed that the knockdown of circ_RNF13 impaired stemness and enhanced the chemosensitivity of CRC in the xenograft model. CONCLUSION circ_RNF13 regulated the stemness and chemosensitivity of CRC by transcriptional regulation of DDX27 mediated by TRIM24 stabilization.
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Affiliation(s)
| | | | | | | | | | - Miao Chen
- Correspondence: ; Tel.: +86-150-8488-6883
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Saikia M, Bhattacharyya DK, Kalita JK. CBDCEM: An effective centrality based differential co-expression method for critical gene finding. GENE REPORTS 2022. [DOI: 10.1016/j.genrep.2022.101688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
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Suo H, Xiao N, Wang K. Potential roles of synaptotagmin family members in cancers: Recent advances and prospects. Front Med (Lausanne) 2022; 9:968081. [PMID: 36004367 PMCID: PMC9393329 DOI: 10.3389/fmed.2022.968081] [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: 06/16/2022] [Accepted: 07/18/2022] [Indexed: 11/16/2022] Open
Abstract
With the continuous development of bioinformatics and public database, more and more genes that play a role in cancers have been discovered. Synaptotagmins (SYTs) are abundant, evolutionarily conserved integral membrane proteins composed of a short N-terminus, a variable linker domain, a single transmembrane domain, and two C2 domains, and they constitute a family of 17 isoforms. The synaptotagmin family members are known to regulate calcium-dependent membrane fusion events. Some SYTs play roles in hormone secretion or neurotransmitter release or both, and much evidence supports SYTs as Ca2+ sensors of exocytosis. Since 5 years ago, an increasing number of studies have found that SYTs also played important roles in the occurrence and development of lung cancer, gastric cancer, colon cancer, and other cancers. Down-regulation of SYTs inhibited cell proliferation, migration, and invasion of cancer cells, but promoted cell apoptosis. Growth of peritoneal nodules is inhibited and survival is prolonged in mice administrated with siSYTs intraperitoneally. Therefore, most studies have found SYTs serve as an oncogene after overexpression and may become potential prognostic biomarkers for multiple cancers. This article provides an overview of recent studies that focus on SYT family members’ roles in cancers and highlights the advances that have been achieved.
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Affiliation(s)
- Huandan Suo
- Department of Surgery, The First Affiliated Hospital of China Medical University, Shenyang, China
| | - Nan Xiao
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of China Medical University, Shenyang, China
| | - Kewei Wang
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of China Medical University, Shenyang, China
- *Correspondence: Kewei Wang,
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Shi Q, Chen J, Zou X, Tang X. Intracellular Cholesterol Synthesis and Transport. Front Cell Dev Biol 2022; 10:819281. [PMID: 35386193 PMCID: PMC8978673 DOI: 10.3389/fcell.2022.819281] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2021] [Accepted: 02/01/2022] [Indexed: 12/18/2022] Open
Abstract
Cholesterol homeostasis is related to multiple diseases in humans, including cardiovascular disease, cancer, and neurodegenerative and hepatic diseases. The cholesterol levels in cells are balanced dynamically by uptake, biosynthesis, transport, distribution, esterification, and export. In this review, we focus on de novo cholesterol synthesis, cholesterol synthesis regulation, and intracellular cholesterol trafficking. In addition, the progression of lipid transfer proteins (LTPs) at multiple contact sites between organelles is considered.
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Affiliation(s)
- Qingyang Shi
- Center of Reproductive Medicine and Center of Prenatal Diagnosis, The First Hospital, Jilin University, Changchun, China
| | - Jiahuan Chen
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, Changchun, China
| | - Xiaodong Zou
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, Changchun, China
| | - Xiaochun Tang
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, Changchun, China
- Chongqing Research Institute of Jilin University, Chongqing, China
- *Correspondence: Xiaochun Tang,
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