1
|
Zhang Y, Zhan L, Jiang X, Tang X. Comprehensive review for non-coding RNAs: From mechanisms to therapeutic applications. Biochem Pharmacol 2024; 224:116218. [PMID: 38643906 DOI: 10.1016/j.bcp.2024.116218] [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: 02/01/2024] [Revised: 04/14/2024] [Accepted: 04/16/2024] [Indexed: 04/23/2024]
Abstract
Non-coding RNAs (ncRNAs) are an assorted collection of transcripts that are not translated into proteins. Since their discovery, ncRNAs have gained prominence as crucial regulators of various biological functions across diverse cell types and tissues, and their abnormal functioning has been implicated in disease. Notably, extensive research has focused on the relationship between microRNAs (miRNAs) and human cancers, although other types of ncRNAs, such as long non-coding RNAs (lncRNAs) and circular RNAs (circRNAs), are also emerging as significant contributors to human disease. In this review, we provide a comprehensive summary of our current knowledge regarding the roles of miRNAs, lncRNAs, and circRNAs in cancer and other major human diseases, particularly cancer, cardiovascular, neurological, and infectious diseases. Moreover, we discuss the potential utilization of ncRNAs as disease biomarkers and as targets for therapeutic interventions.
Collapse
Affiliation(s)
- YanJun Zhang
- College of Pharmacy and Traditional Chinese Medicine, Jiangsu College of Nursing, Huaian, Jiangsu, 223005, China
| | - Lijuan Zhan
- College of Pharmacy and Traditional Chinese Medicine, Jiangsu College of Nursing, Huaian, Jiangsu, 223005, China
| | - Xue Jiang
- College of Pharmacy and Traditional Chinese Medicine, Jiangsu College of Nursing, Huaian, Jiangsu, 223005, China.
| | - Xiaozhu Tang
- School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China.
| |
Collapse
|
2
|
MicroRNAs as Potential Biomarkers in Pituitary Adenomas. Noncoding RNA 2021; 7:ncrna7030055. [PMID: 34564317 PMCID: PMC8482103 DOI: 10.3390/ncrna7030055] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 08/27/2021] [Accepted: 08/30/2021] [Indexed: 12/16/2022] Open
Abstract
Pituitary adenomas (PAs) are one of the most common lesions of intracranial neoplasms, occurring in approximately 15% of the general population. They are typically benign, although some adenomas show aggressive behavior, exhibiting rapid growth, drug resistance, and invasion of surrounding tissues. Despite ongoing improvements in diagnostic and therapeutic strategies, late first diagnosis is common, and patients with PAs are prone to relapse. Therefore, earlier diagnosis and prevention of recurrence are of importance to improve patient care. MicroRNAs (miRNAs) are short non-coding single stranded RNAs that regulate gene expression at the post-transcriptional level. An increasing number of studies indicate that a deregulation of their expression patterns is related with pituitary tumorigenesis, suggesting that these small molecules could play a critical role in contributing to tumorigenesis and the onset of these tumors by acting either as oncosuppressors or as oncogenes, depending on the biological context. This paper provides an overview of miRNAs involved in PA tumorigenesis, which might serve as novel potential diagnostic and prognostic non-invasive biomarkers, and for the future development of miRNA-based therapeutic strategies for PAs.
Collapse
|
3
|
Marini F, Brandi ML. Role of miR-24 in Multiple Endocrine Neoplasia Type 1: A Potential Target for Molecular Therapy. Int J Mol Sci 2021; 22:ijms22147352. [PMID: 34298972 PMCID: PMC8306915 DOI: 10.3390/ijms22147352] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 07/07/2021] [Accepted: 07/07/2021] [Indexed: 12/21/2022] Open
Abstract
Multiple endocrine neoplasia type 1 (MEN1) is a rare autosomal dominant inherited multiple cancer syndrome of neuroendocrine tissues. Tumors are caused by an inherited germinal heterozygote inactivating mutation of the MEN1 tumor suppressor gene, followed by a somatic loss of heterozygosity (LOH) of the MEN1 gene in target neuroendocrine cells, mainly at parathyroids, pancreas islets, and anterior pituitary. Over 1500 different germline and somatic mutations of the MEN1 gene have been identified, but the syndrome is completely missing a direct genotype-phenotype correlation, thus supporting the hypothesis that exogenous and endogenous factors, other than MEN1 specific mutation, are involved in MEN1 tumorigenesis and definition of individual clinical phenotype. Epigenetic factors, such as microRNAs (miRNAs), are strongly suspected to have a role in MEN1 tumor initiation and development. Recently, a direct autoregulatory network between miR-24, MEN1 mRNA, and menin was demonstrated in parathyroids and endocrine pancreas, showing a miR-24-induced silencing of menin expression that could have a key role in initiation of tumors in MEN1-target neuroendocrine cells. Here, we review the current knowledge on the post-transcriptional regulation of MEN1 and menin expression by miR-24, and its possible direct role in MEN1 syndrome, describing the possibility and the potential approaches to target and silence this miRNA, to permit the correct expression of the wild type menin, and thereby prevent the development of cancers in the target tissues.
Collapse
MESH Headings
- 3' Untranslated Regions
- Animals
- Antagomirs/pharmacology
- Antagomirs/therapeutic use
- Chromosomes, Human, Pair 19/genetics
- Chromosomes, Human, Pair 9/genetics
- DNA Damage
- Feedback, Physiological
- Forecasting
- Gene Expression Regulation, Neoplastic
- Gene Regulatory Networks
- Genetic Therapy
- Humans
- MicroRNAs/genetics
- Molecular Targeted Therapy
- Multiple Endocrine Neoplasia Type 1/genetics
- Multiple Endocrine Neoplasia Type 1/metabolism
- Multiple Endocrine Neoplasia Type 1/therapy
- Neoplasm Proteins/antagonists & inhibitors
- Neoplasm Proteins/genetics
- Neoplasm Proteins/metabolism
- Neoplasms/genetics
- Neoplasms/metabolism
- Neoplasms/pathology
- Protein Isoforms/genetics
- Proto-Oncogene Proteins/antagonists & inhibitors
- Proto-Oncogene Proteins/genetics
- Proto-Oncogene Proteins/metabolism
- RNA, Messenger/antagonists & inhibitors
- RNA, Messenger/genetics
- RNA, Neoplasm/antagonists & inhibitors
- RNA, Neoplasm/genetics
- Rats
Collapse
Affiliation(s)
- Francesca Marini
- Department of Experimental and Clinical Biomedical Sciences, University of Florence, Viale Pieraccini 6, 50139 Florence, Italy;
- F.I.R.M.O., Italian Foundation for the Research on Bone Diseases, Via Reginaldo Giuliani 195/A, 50141 Florence, Italy
| | - Maria Luisa Brandi
- F.I.R.M.O., Italian Foundation for the Research on Bone Diseases, Via Reginaldo Giuliani 195/A, 50141 Florence, Italy
- Correspondence: or ; Tel.: +39-055-23-36-663
| |
Collapse
|
4
|
Tyagi G, Kapoor N, Chandra G, Gambhir L. Cure lies in nature: medicinal plants and endophytic fungi in curbing cancer. 3 Biotech 2021; 11:263. [PMID: 33996375 DOI: 10.1007/s13205-021-02803-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Accepted: 04/21/2021] [Indexed: 12/15/2022] Open
Abstract
Success of targeted cancer treatment modalities has generated an ambience of plausible cure for cancer. However, cancer remains to be the major cause of mortality across the globe. The emergence of chemoresistance, relapse after treatment and associated adverse effects has posed challenges to the present therapeutic regimes. Thus, investigating new therapeutic agents of natural origin and delineating the underlying mechanism of action is necessary. Since ages and still in continuum, the phytochemicals have been the prime source of identifying bioactive agents against cancer. They have been exploited for isolating targeted specific compounds to modulate the key regulating signaling pathways of cancer pathogenesis and progression. Capsaicin (alkaloid compound in chilli), catechin, epicatechin, epigallocatechin and epigallocatechin-3-gallate (phytochemicals in green tea), lutein (carotenoid found in yellow fruits), Garcinol (phenolic compound present in kokum tree) and many other naturally available compounds are also very valuable to develop the drugs to treat the cancer. An alternate repository of similar chemical diversity exists in the form of endophytic fungi inhabiting the medicinal plants. There is a high diversity of plant associated endophytic fungi in nature which are potent producers of anti-cancer compounds and offers even stronger hope for the discovery of an efficient anti-cancer drug. These fungi provide various bioactive molecules, such as terpenoids, flavonoids, alkaloids, phenolic compounds, quinines, steroids etc. exhibiting anti-cancerous property. The review discusses the relevance of phytochemicals in chemoprevention and as modulators of miRNA. The perspective advocates the imperative role of anti-cancerous secondary metabolites containing repository of endophytic fungi, as an alternative route of drug discovery.
Collapse
Affiliation(s)
- Garima Tyagi
- Department of Biotechnology, School of Basic & Applied Sciences, Shri Guru Ram Rai University, Dehradun, Uttrakhand 248001 India
| | - Neha Kapoor
- School of Applied Sciences, Suresh Gyan Vihar University, Jaipur, Rajasthan 302017 India
| | - Girish Chandra
- Department of Seed Science and Technology, School of Agricultural Sciences, Shri Guru Ram Rai University, Dehradun, Uttrakhand 248001 India
| | - Lokesh Gambhir
- School of Applied Sciences, Suresh Gyan Vihar University, Jaipur, Rajasthan 302017 India
| |
Collapse
|
5
|
Catellani C, Ravegnini G, Sartori C, Angelini S, Street ME. GH and IGF System: The Regulatory Role of miRNAs and lncRNAs in Cancer. Front Endocrinol (Lausanne) 2021; 12:701246. [PMID: 34484116 PMCID: PMC8415755 DOI: 10.3389/fendo.2021.701246] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Accepted: 07/13/2021] [Indexed: 12/13/2022] Open
Abstract
Growth hormone (GH) and the insulin-like growth factor (IGF) system are involved in many biological processes and have growth-promoting actions regulating cell proliferation, differentiation, apoptosis and angiogenesis. A recent chapter in epigenetics is represented by microRNAs (miRNAs) and long non-coding RNAs (lncRNAs) which regulate gene expression. Dysregulated miRNAs and lncRNAs have been associated with several diseases including cancer. Herein we report the most recent findings concerning miRNAs and lncRNAs regulating GH and the IGF system in the context of pituitary adenomas, osteosarcoma and colorectal cancer, shedding light on new possible therapeutic targets. Pituitary adenomas are increasingly common intracranial tumors and somatotroph adenomas determine supra-physiological GH secretion and cause acromegaly. Osteosarcoma is the most frequent bone tumor in children and adolescents and was reported in adults who were treated with GH in childhood. Colorectal cancer is the third cancer in the world and has a higher prevalence in acromegalic patients.
Collapse
Affiliation(s)
- Cecilia Catellani
- Department of Mother and Child, Azienda USL-IRCCS di Reggio Emilia, Reggio Emilia, Italy
- PhD Program in Clinical and Experimental Medicine, University of Modena and Reggio Emilia, Modena, Italy
| | - Gloria Ravegnini
- Department of Pharmacy & Biotechnology, University of Bologna, Bologna, Italy
| | - Chiara Sartori
- Department of Mother and Child, Azienda USL-IRCCS di Reggio Emilia, Reggio Emilia, Italy
| | - Sabrina Angelini
- Department of Pharmacy & Biotechnology, University of Bologna, Bologna, Italy
| | - Maria E. Street
- Department of Mother and Child, Azienda USL-IRCCS di Reggio Emilia, Reggio Emilia, Italy
- *Correspondence: Maria E. Street,
| |
Collapse
|
6
|
Ni Y, Yang Y, Ran J, Zhang L, Yao M, Liu Z, Zhang L. miR-15a-5p inhibits metastasis and lipid metabolism by suppressing histone acetylation in lung cancer. Free Radic Biol Med 2020; 161:150-162. [PMID: 33059020 DOI: 10.1016/j.freeradbiomed.2020.10.009] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 10/04/2020] [Accepted: 10/07/2020] [Indexed: 02/05/2023]
Abstract
Metabolic reprogramme was a key characteristic of malignant tumors. Increased evidences indicated that besides Warburg effect (abnormal glucose metabolism), abnormal lipid metabolism played more and more important in progression and metastasis of malignant tumors. MiR-15a-5p could inhibit development of lung cancer, while its regulating mechanism, especially the role in lipid metabolism still remained unclear. In this study, we confirmed that miR-15a-5p inhibited proliferation, migration and invasion of lung cancer cells. The online analysis of Mirpath v.3 predicted that miR-15a-5p was closely associated with fatty acid synthesis and lipid metabolism. In vitro cell experiments revealed that miR-15a-5p significantly suppressed fatty acid synthesis of lung cancer cells by inhibiting acetate uptake. Extensive analysis indicated that miR-15a-5p could suppress acetyl-CoA activity and decrease histone H4 acetylation by inhibiting ACSS2 expression. In addition, we also observed that ACSS2 located in nucleus under hypoxic conditions, while miR-15a-5p could be transported into nucleus to inhibit the function of ACSS2. Our study unveiled a novel mechanism of miR-15a-5p in inhibiting metastasis of lung cancer cells by suppressing lipid metabolism via suppression of ACSS2 mediated acetyl-CoA activity and histone acetylation.
Collapse
Affiliation(s)
- Yinyun Ni
- Precision Medicine Research Center, West China Hospital of Sichuan University, Chengdu, 610041, China
| | - Ying Yang
- Precision Medicine Research Center, West China Hospital of Sichuan University, Chengdu, 610041, China
| | - Jingjing Ran
- Precision Medicine Research Center, West China Hospital of Sichuan University, Chengdu, 610041, China
| | - Lu Zhang
- West China-Washington Mitochondria and Metabolism Center, West China Hospital of Sichuan University, Chengdu, 610041, China
| | - Menglin Yao
- Precision Medicine Research Center, West China Hospital of Sichuan University, Chengdu, 610041, China
| | - Zhiqiang Liu
- Precision Medicine Research Center, West China Hospital of Sichuan University, Chengdu, 610041, China
| | - Li Zhang
- Precision Medicine Research Center, West China Hospital of Sichuan University, Chengdu, 610041, China; Laboratory of Pathology, West China Hospital of Sichuan University, Chengdu, 610041, China.
| |
Collapse
|
7
|
Srirangam Nadhamuni V, Korbonits M. Novel Insights into Pituitary Tumorigenesis: Genetic and Epigenetic Mechanisms. Endocr Rev 2020; 41:bnaa006. [PMID: 32201880 PMCID: PMC7441741 DOI: 10.1210/endrev/bnaa006] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Accepted: 03/19/2020] [Indexed: 02/08/2023]
Abstract
Substantial advances have been made recently in the pathobiology of pituitary tumors. Similar to many other endocrine tumors, over the last few years we have recognized the role of germline and somatic mutations in a number of syndromic or nonsyndromic conditions with pituitary tumor predisposition. These include the identification of novel germline variants in patients with familial or simplex pituitary tumors and establishment of novel somatic variants identified through next generation sequencing. Advanced techniques have allowed the exploration of epigenetic mechanisms mediated through DNA methylation, histone modifications and noncoding RNAs, such as microRNA, long noncoding RNAs and circular RNAs. These mechanisms can influence tumor formation, growth, and invasion. While genetic and epigenetic mechanisms often disrupt similar pathways, such as cell cycle regulation, in pituitary tumors there is little overlap between genes altered by germline, somatic, and epigenetic mechanisms. The interplay between these complex mechanisms driving tumorigenesis are best studied in the emerging multiomics studies. Here, we summarize insights from the recent developments in the regulation of pituitary tumorigenesis.
Collapse
Affiliation(s)
- Vinaya Srirangam Nadhamuni
- Centre for Endocrinology, William Harvey Research Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, UK
| | - Márta Korbonits
- Centre for Endocrinology, William Harvey Research Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, UK
| |
Collapse
|
8
|
Donati S, Ciuffi S, Marini F, Palmini G, Miglietta F, Aurilia C, Brandi ML. Multiple Endocrine Neoplasia Type 1: The Potential Role of microRNAs in the Management of the Syndrome. Int J Mol Sci 2020; 21:ijms21207592. [PMID: 33066578 PMCID: PMC7589704 DOI: 10.3390/ijms21207592] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 10/12/2020] [Accepted: 10/12/2020] [Indexed: 02/06/2023] Open
Abstract
Multiple endocrine neoplasia type 1 (MEN1) is a rare inherited tumor syndrome, characterized by the development of multiple neuroendocrine tumors (NETs) in a single patient. Major manifestations include primary hyperparathyroidism, gastro-entero-pancreatic neuroendocrine tumors, and pituitary adenomas. In addition to these main NETs, various combinations of more than 20 endocrine and non-endocrine tumors have been described in MEN1 patients. Despite advances in diagnostic techniques and treatment options, which are generally similar to those of sporadic tumors, patients with MEN1 have a poor life expectancy, and the need for targeted therapies is strongly felt. MEN1 is caused by germline heterozygous inactivating mutations of the MEN1 gene, which encodes menin, a tumor suppressor protein. The lack of a direct genotype–phenotype correlation does not permit the determination of the exact clinical course of the syndrome. One of the possible causes of this lack of association could be ascribed to epigenetic factors, including microRNAs (miRNAs), single-stranded non-coding small RNAs that negatively regulate post-transcriptional gene expression. Some miRNAs, and their deregulation, have been associated with MEN1 tumorigenesis. Recently, an extracellular class of miRNAs has also been identified (c-miRNAs); variations in their levels showed association with various human diseases, including tumors. The aim of this review is to provide a general overview on the involvement of miRNAs in MEN1 tumor development, to be used as possible targets for novel molecular therapies. The potential role of c-miRNAs as future non-invasive diagnostic and prognostic biomarkers of MEN1 will be discussed as well.
Collapse
Affiliation(s)
- Simone Donati
- Department of Experimental and Clinical Biomedical Sciences “Mario Serio”, University of Study of Florence, Viale Pieraccini 6, 50139 Florence, Italy; (S.D.); (S.C.); (F.M.); (G.P.); (F.M.); (C.A.)
| | - Simone Ciuffi
- Department of Experimental and Clinical Biomedical Sciences “Mario Serio”, University of Study of Florence, Viale Pieraccini 6, 50139 Florence, Italy; (S.D.); (S.C.); (F.M.); (G.P.); (F.M.); (C.A.)
| | - Francesca Marini
- Department of Experimental and Clinical Biomedical Sciences “Mario Serio”, University of Study of Florence, Viale Pieraccini 6, 50139 Florence, Italy; (S.D.); (S.C.); (F.M.); (G.P.); (F.M.); (C.A.)
| | - Gaia Palmini
- Department of Experimental and Clinical Biomedical Sciences “Mario Serio”, University of Study of Florence, Viale Pieraccini 6, 50139 Florence, Italy; (S.D.); (S.C.); (F.M.); (G.P.); (F.M.); (C.A.)
| | - Francesca Miglietta
- Department of Experimental and Clinical Biomedical Sciences “Mario Serio”, University of Study of Florence, Viale Pieraccini 6, 50139 Florence, Italy; (S.D.); (S.C.); (F.M.); (G.P.); (F.M.); (C.A.)
| | - Cinzia Aurilia
- Department of Experimental and Clinical Biomedical Sciences “Mario Serio”, University of Study of Florence, Viale Pieraccini 6, 50139 Florence, Italy; (S.D.); (S.C.); (F.M.); (G.P.); (F.M.); (C.A.)
| | - Maria Luisa Brandi
- Department of Experimental and Clinical Biomedical Sciences “Mario Serio”, University of Study of Florence, Viale Pieraccini 6, 50139 Florence, Italy; (S.D.); (S.C.); (F.M.); (G.P.); (F.M.); (C.A.)
- Unit of Bone and Mineral Diseases, University Hospital of Florence, Largo Palagi 1, 50139 Florence, Italy
- Fondazione Italiana Ricerca Sulle Malattie Dell’Osso (FIRMO Onlus), 50141 Florence, Italy
- Correspondence: ; Tel.: +39-055-7946304
| |
Collapse
|
9
|
Mamedova EO, Dimitrova DA, Belaya ZE, Melnichenko GA. [The role of non-coding RNAs in the pathogenesis of multiple endocrine neoplasia syndrome type 1]. ACTA ACUST UNITED AC 2020; 66:4-12. [PMID: 33351343 DOI: 10.14341/probl12413] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 06/02/2020] [Accepted: 06/15/2020] [Indexed: 01/03/2023]
Abstract
Changes in the expression of non-coding ribonucleic acids (ncRNAs) take part in the formation of various tumors. Multiple endocrine neoplasia syndrome type 1 (MEN1) is a rare autosomal dominant disease caused by mutations of the MEN1 gene encoding the menin protein. This syndrome is characterized by the occurrence of parathyroid tumors, gastroenteropancreatic neuroendocrine tumors, pituitary adenomas, as well as other endocrine and non-endocrine tumors. The pathogenesis of MEN-1 associated tumors due to MEN1 mutations remains unclear. In the absence of mutations of the MEN1 gene in patients with phenotypically similar features, this condition is regarded as a phenocopy of this syndrome. The cause of the combination of several MEN-1-related tumors in these patients remains unknown. The possible cause is that changes in the expression of ncRNAs affect the regulation of signaling pathways in which menin participates and may contribute to the development of MEN-1-related tumors. The identification of even a small number of agents interacting with menin makes a significant contribution to the improvement of knowledge about its pathophysiological influence and ways of developing tumors within the MEN-1 syndrome and its phenocopies.
Collapse
|
10
|
Genetics of Pituitary Tumours. EXPERIENTIA. SUPPLEMENTUM 2019. [PMID: 31588533 DOI: 10.1007/978-3-030-25905-1_10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2023]
Abstract
Pituitary tumours are relatively common in the general population. Most often they occur sporadically, with somatic mutations accounting for a significant minority of somatotroph and corticotroph adenomas. Pituitary tumours can also develop secondary to germline mutations as part of a complex syndrome or as familial isolated pituitary adenomas. Tumours occurring in a familial setting may present at a younger age and can behave more aggressively with resistance to treatment. This chapter will focus on the genetics and molecular pathogenesis of pituitary tumours.
Collapse
|
11
|
MiR-200-3p Is Potentially Involved in Cell Cycle Arrest by Regulating Cyclin A during Aestivation in Apostichopus japonicus. Cells 2019; 8:cells8080843. [PMID: 31390757 PMCID: PMC6721757 DOI: 10.3390/cells8080843] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 08/02/2019] [Accepted: 08/04/2019] [Indexed: 11/16/2022] Open
Abstract
The sea cucumber (Apostichopus japonicus) has become a good model organism for studying environmentally induced aestivation in marine invertebrates. We hypothesized that mechanisms that arrest energy-expensive cell cycle activity would contribute significantly to establishing the hypometabolic state during aestivation. Cyclin A is a core and particularly interesting cell cycle regulator that functions in both the S phase and in mitosis. In the present study, negative relationships between miR-200-3p and AjCA expressions were detected at both the transcriptional and the translational levels during aestivation in A. japonicus. Dual-luciferase reporter assays confirmed the targeted location of the miR-200-3p binding site within the AjCA gene transcript. Furthermore, gain- and loss-of-function experiments were conducted in vivo with sea cucumbers to verify the interaction between miR-200-3p and AjCA in intestine tissue by qRT-PCR and Western blotting. The results show that the overexpression of miR-200-3p mimics suppressed AjCA transcript levels and translated protein production, whereas transfection with a miR-200-3p inhibitor enhanced both AjCA mRNA and AjCA protein in A. japonicus intestine. Our findings suggested a potential mechanism that reversibly arrests cell cycle progression during aestivation, which may center on miR-200-3p inhibitory control over the translation of cyclin A mRNA transcripts.
Collapse
|