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Suri K, Ramesh M, Bhandari M, Gupta V, Kumar V, Govindaraju T, Murugan NA. Role of Amyloidogenic and Non-Amyloidogenic Protein Spaces in Neurodegenerative Diseases and their Mitigation Using Theranostic Agents. Chembiochem 2024; 25:e202400224. [PMID: 38668376 DOI: 10.1002/cbic.202400224] [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: 03/11/2024] [Revised: 04/23/2024] [Indexed: 06/15/2024]
Abstract
Neurodegenerative diseases (NDDs) refer to a complex heterogeneous group of diseases which are associated with the accumulation of amyloid fibrils or plaques in the brain leading to progressive loss of neuronal functions. Alzheimer's disease is one of the major NDD responsible for 60-80 % of all dementia cases. Currently, there are no curative or disease-reversing/modifying molecules for many of the NDDs except a few such as donepezil, rivastigmine, galantamine, carbidopa and levodopa which treat the disease-associated symptoms. Similarly, there are very few FDA-approved tracers such as flortaucipir (Tauvid) for tau fibril imaging and florbetaben (Neuraceq), flutemetamol (Vizamyl), and florbetapir (Amyvid) for amyloid imaging available for diagnosis. Recent advances in the cryogenic electron microscopy reported distinctly different microstructures for tau fibrils associated with different tauopathies highlighting the possibility to develop tauopathy-specific imaging agents and therapeutics. In addition, it is important to identify the proteins that are associated with disease development and progression to know about their 3D structure to develop various diagnostics, therapeutics and theranostic agents. The current article discusses in detail the disease-associated amyloid and non-amyloid proteins along with their structural insights. We comprehensively discussed various novel proteins associated with NDDs and their implications in disease pathology. In addition, we document various emerging chemical compounds developed for diagnosis and therapy of different NDDs with special emphasis on theranostic agents for better management of NDDs.
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Affiliation(s)
- Kapali Suri
- Department of Computational Biology, Indraprastha Institute of Information Technology (IIIT-Delhi) Okhla, Phase III, New Delhi, 110020, India
| | - Madhu Ramesh
- Bioorganic Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR) Jakkur P.O., Bengaluru, 560064, Karnataka, India
| | - Mansi Bhandari
- Department of computer science and engineering, Jamia Hamdard University, Hamdard Nagar, New Delhi, Delhi, 110062
| | - Vishakha Gupta
- Department of Computational Biology, Indraprastha Institute of Information Technology (IIIT-Delhi) Okhla, Phase III, New Delhi, 110020, India
| | - Virendra Kumar
- Department of Computational Biology, Indraprastha Institute of Information Technology (IIIT-Delhi) Okhla, Phase III, New Delhi, 110020, India
| | - Thimmaiah Govindaraju
- Bioorganic Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR) Jakkur P.O., Bengaluru, 560064, Karnataka, India
| | - N Arul Murugan
- Department of Computational Biology, Indraprastha Institute of Information Technology (IIIT-Delhi) Okhla, Phase III, New Delhi, 110020, India
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El-Korany WA, Zahran WE, Alm El-Din MA, Al-Shenawy HA, Soliman AF. Rs12039395 Variant Influences the Expression of hsa-miR-181a-5p and PTEN Toward Colorectal Cancer Risk. Dig Dis Sci 2024:10.1007/s10620-024-08517-3. [PMID: 38940971 DOI: 10.1007/s10620-024-08517-3] [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] [Received: 04/16/2024] [Accepted: 05/31/2024] [Indexed: 06/29/2024]
Abstract
BACKGROUND Single nucleotide polymorphisms (SNPs) in microRNA (miRNA) genes could alter miRNA expression levels or processing and, thus, may contribute to colorectal cancer (CRC) development. Therefore, this study aimed to examine whether the MIR181A1 genomic sequence possesses SNPs that can affect the expression of hsa-miR-181a-5p and, subsequently, impact its targets and associate with CRC risk. METHODS The NCBI dbSNP database was searched for possible SNPs associated with MIR181A1. One SNP with a minor allele frequency > 5%, rs12039395 G > T was identified. In silico analyses determined the effect of the SNP on the secondary structure of the miRNA and predicted the hsa-miR-181a-5p target genes. The SNP was genotyped using allelic discrimination assay, the relative hsa-miR-181a-5p expression level was determined using quantitative real-time PCR, and immunohistochemical staining was used to detect target genes in 192 paraffin-embedded specimens collected from 160 CRC patients and 32 healthy subjects. RESULTS The rs6505162 SNP conferred protection against CRC, and the G-allele presence provides may provide accessibility for the transcriptional machinery. Hsa-miR-181a-5p was significantly over-expressed in the CRC group compared to controls and in samples carrying the G-allele compared to those with T-allele. PTEN, identified as the only hsa-miR-181a-5p target implicated in CRC, was significantly diminished in the CRC group compared to controls and showed an inverse relationship with hsa-miR-181a-5p expression level as well as negatively associated with the G-allele presence in CRC. CONCLUSION This study highlights that rs12039395 G > T may protect against CRC by influencing the expression of hsa-mir-181a-5p and its target gene, PTEN.
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Affiliation(s)
- Wael A El-Korany
- Biochemistry Department, Faculty of Science, Ain Shams University, Cairo, Egypt
| | - Walid E Zahran
- Biochemistry Department, Faculty of Science, Ain Shams University, Cairo, Egypt
| | - Mohamed A Alm El-Din
- Clinical Oncology Department, Faculty of Medicine, Tanta University, Gharbia, Egypt
| | - Hanan A Al-Shenawy
- Pathology Department, Faculty of Medicine, Tanta University, Gharbia, Egypt
| | - Ahmed F Soliman
- Biochemistry Department, Faculty of Science, Ain Shams University, Cairo, Egypt.
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Saloner R, Paolillo EW, Wojta KJ, Fonseca C, Gontrum EQ, Lario-Lago A, Rabinovici GD, Yokoyama JS, Rexach JE, Kramer JH, Casaletto KB. Sex-specific effects of SNAP-25 genotype on verbal memory and Alzheimer's disease biomarkers in clinically normal older adults. Alzheimers Dement 2023; 19:3448-3457. [PMID: 36807763 PMCID: PMC10435666 DOI: 10.1002/alz.12989] [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] [Indexed: 02/20/2023]
Abstract
INTRODUCTION We tested sex-dependent associations of variation in the SNAP-25 gene, which encodes a presynaptic protein involved in hippocampal plasticity and memory, on cognitive and Alzheimer's disease (AD) neuroimaging outcomes in clinically normal adults. METHODS Participants were genotyped for SNAP-25 rs1051312 (T > C; SNAP-25 expression: C-allele > T/T). In a discovery cohort (N = 311), we tested the sex by SNAP-25 variant interaction on cognition, Aβ-PET positivity, and temporal lobe volumes. Cognitive models were replicated in an independent cohort (N = 82). RESULTS In the discovery cohort, C-allele carriers exhibited better verbal memory and language, lower Aβ-PET positivity rates, and larger temporal volumes than T/T homozygotes among females, but not males. Larger temporal volumes related to better verbal memory only in C-carrier females. The female-specific C-allele verbal memory advantage was evidenced in the replication cohort. CONCLUSIONS In females, genetic variation in SNAP-25 is associated with resistance to amyloid plaque formation and may support verbal memory through fortification of temporal lobe architecture. HIGHLIGHTS The SNAP-25 rs1051312 (T > C) C-allele results in higher basal SNAP-25 expression. C-allele carriers had better verbal memory in clinically normal women, but not men. Female C-carriers had higher temporal lobe volumes, which predicted verbal memory. Female C-carriers also exhibited the lowest rates of amyloid-beta PET positivity. The SNAP-25 gene may influence female-specific resistance to Alzheimer's disease (AD).
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Affiliation(s)
- Rowan Saloner
- Memory and Aging Center, Department of Neurology, Weill Institute for Neurosciences, University of California, San Francisco, California, USA
| | - Emily W. Paolillo
- Memory and Aging Center, Department of Neurology, Weill Institute for Neurosciences, University of California, San Francisco, California, USA
| | - Kevin J. Wojta
- Neurogenetics Program, Department of Neurology, University of California, Los Angeles, California, USA
| | - Corrina Fonseca
- Helen Wills Neuroscience Institute, University of California, Berkeley, California, USA
| | - Eva Q. Gontrum
- Memory and Aging Center, Department of Neurology, Weill Institute for Neurosciences, University of California, San Francisco, California, USA
| | - Argentina Lario-Lago
- Memory and Aging Center, Department of Neurology, Weill Institute for Neurosciences, University of California, San Francisco, California, USA
| | - Gil D. Rabinovici
- Memory and Aging Center, Department of Neurology, Weill Institute for Neurosciences, University of California, San Francisco, California, USA
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, California, USA
| | - Jennifer S. Yokoyama
- Memory and Aging Center, Department of Neurology, Weill Institute for Neurosciences, University of California, San Francisco, California, USA
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, California, USA
| | - Jessica E. Rexach
- Neurogenetics Program, Department of Neurology, University of California, Los Angeles, California, USA
| | - Joel H. Kramer
- Memory and Aging Center, Department of Neurology, Weill Institute for Neurosciences, University of California, San Francisco, California, USA
| | - Kaitlin B. Casaletto
- Memory and Aging Center, Department of Neurology, Weill Institute for Neurosciences, University of California, San Francisco, California, USA
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Agostini S, Bolognesi E, Mancuso R, Marventano I, Citterio LA, Guerini FR, Clerici M. miR-23a-3p and miR-181a-5p modulate SNAP-25 expression. PLoS One 2023; 18:e0279961. [PMID: 36649268 PMCID: PMC9844927 DOI: 10.1371/journal.pone.0279961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 12/14/2022] [Indexed: 01/18/2023] Open
Abstract
SNAP-25 protein is a key protein of the SNARE complex that is involved in synaptic vesicles fusion with plasma membranes and neurotransmitter release, playing a fundamental role in neural plasticity. Recently the concentration of three specific miRNAs-miR-27b-3p, miR-181a-5p and miR-23a-3p -was found to be associated with a specific SNAP-25 polymorphism (rs363050). in silico analysis showed that all the three miRNAs target SNAP-25, but the effect of the interaction between these miRNAs and the 3'UTR of SNAP-25 mRNA is currently unknown. For this reason, we verified in vitro whether miR-27b-3p, miR-181a-5p and miR-23a-3p modulate SNAP-25 gene and protein expression. Initial experiments using miRNAs-co-transfected Vero cells and SNAP-25 3'UTR luciferase reporter plasmids showed that miR-181a-5p (p≤0.01) and miR-23a-3p (p<0.05), but not miR-27b-3p, modulate the luciferase signal, indicating that these two miRNAs bind the SNAP-25 3'UTR. Results obtained using human oligodendroglial cell line (MO3.13) transfected with miR-181a-5p or miR-27b-3p confirmed that miR-181a-5p and miR-23a-3p regulate SNAP-25 gene and protein expression. Interestingly, the two miRNAs modulate in an opposite way SNAP-25, as miR-181a-5p significantly increases (p<0.0005), whereas miR-23a-3p decreases (p<0.0005) its expression. These results for the first time describe the ability of miR-181a-5p and miR-23a-3p to modulate SNAP-25 expression, suggesting their possible use as biomarkers or as therapeutical targets for diseases in which SNAP-25 expression is altered.
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Affiliation(s)
| | | | - Roberta Mancuso
- IRCCS Fondazione Don Carlo Gnocchi ONLUS, Milan, Italy
- * E-mail:
| | | | | | | | - Mario Clerici
- IRCCS Fondazione Don Carlo Gnocchi ONLUS, Milan, Italy
- Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy
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MicroRNA-23a-3p ameliorates acute kidney injury by targeting FKBP5 and NF-κB signaling in sepsis. Cytokine 2022; 155:155898. [DOI: 10.1016/j.cyto.2022.155898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 04/12/2022] [Accepted: 04/23/2022] [Indexed: 11/16/2022]
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Ogonowski N, Salcidua S, Leon T, Chamorro-Veloso N, Valls C, Avalos C, Bisquertt A, Rentería ME, Orellana P, Duran-Aniotz C. Systematic Review: microRNAs as Potential Biomarkers in Mild Cognitive Impairment Diagnosis. Front Aging Neurosci 2022; 13:807764. [PMID: 35095478 PMCID: PMC8790149 DOI: 10.3389/fnagi.2021.807764] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 12/15/2021] [Indexed: 12/14/2022] Open
Abstract
The rate of progression from Mild Cognitive Impairment (MCI) to Alzheimer's disease (AD) is estimated at >10% per year, reaching up to 80-90% after 6 years. MCI is considered an indicator of early-stage AD. In this context, the diagnostic screening of MCI is crucial for detecting individuals at high risk of AD before they progress and manifest further severe symptoms. Typically, MCI has been determined using neuropsychological assessment tools such as the Montreal Cognitive Assessment (MoCA) or Mini-Mental Status Examination (MMSE). Unfortunately, other diagnostic methods are not available or are unable to identify MCI in its early stages. Therefore, identifying new biomarkers for MCI diagnosis and prognosis is a significant challenge. In this framework, miRNAs in serum, plasma, and other body fluids have emerged as a promising source of biomarkers for MCI and AD-related cognitive impairments. Interestingly, miRNAs can regulate several signaling pathways via multiple and diverse targets in response to pathophysiological stimuli. This systematic review aims to describe the current state of the art regarding AD-related target genes modulated by differentially expressed miRNAs in peripheral fluids samples in MCI subjects to identify potential miRNA biomarkers in the early stages of AD. We found 30 articles that described five miRNA expression profiles from peripheral fluid in MCI subjects, showing possible candidates for miRNA biomarkers that may be followed up as fluid biomarkers or therapeutic targets of early-stage AD. However, additional research is needed to validate these miRNAs and characterize the precise neuropathological mechanisms.
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Affiliation(s)
- Natalia Ogonowski
- Latin American Institute for Brain Health (BrainLat), Universidad Adolfo Ibanez, Santiago, Chile
- Cognitive Neuroscience Center (CNC), National Scientific and Technical Research Council (CONICET), Universidad de San Andrés, Buenos Aires, Argentina
| | - Stefanny Salcidua
- Latin American Institute for Brain Health (BrainLat), Universidad Adolfo Ibanez, Santiago, Chile
- Faculty of Engineering and Sciences, Universidad Adolfo Ibanez, Santiago, Chile
| | - Tomas Leon
- Global Brain Health Institute, Trinity College, Dublin, Ireland
- Memory and Neuropsychiatric Clinic (CMYN) Neurology Department, Hospital del Salvador, Faculty of Medicine, University of Chile, Santiago, Chile
| | | | | | - Constanza Avalos
- Latin American Institute for Brain Health (BrainLat), Universidad Adolfo Ibanez, Santiago, Chile
| | | | - Miguel E. Rentería
- Department of Genetics and Computational Biology, Queensland Institute of Medical Research (QIMR) Berghofer Medical Research Institute, Brisbane, QLD, Australia
| | - Paulina Orellana
- Latin American Institute for Brain Health (BrainLat), Universidad Adolfo Ibanez, Santiago, Chile
- Center for Social and Cognitive Neuroscience (CSCN), School of Psychology, Universidad Adolfo Ibanez, Santiago, Chile
| | - Claudia Duran-Aniotz
- Latin American Institute for Brain Health (BrainLat), Universidad Adolfo Ibanez, Santiago, Chile
- Center for Social and Cognitive Neuroscience (CSCN), School of Psychology, Universidad Adolfo Ibanez, Santiago, Chile
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7
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Chum PP, Hakim MA, Behringer EJ. Cerebrovascular microRNA Expression Profile During Early Development of Alzheimer's Disease in a Mouse Model. J Alzheimers Dis 2021; 85:91-113. [PMID: 34776451 DOI: 10.3233/jad-215223] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BACKGROUND Emerging evidence demonstrates association of Alzheimer's disease (AD) with impaired delivery of blood oxygen and nutrients to and throughout the brain. The cerebral circulation plays multiple roles underscoring optimal brain perfusion and cognition entailing moment-to-moment blood flow control, vascular permeability, and angiogenesis. With currently no effective treatment to prevent or delay the progression of AD, cerebrovascular microRNA (miRNA) markers corresponding to post-transcriptional regulation may distinguish phases of AD. OBJECTIVE We tested the hypothesis that cerebrovascular miRNA expression profiles indicate developmental stages of AD pathology. METHODS Total RNA was isolated from total brain vessel segments of male and female 3xTg-AD mice [young, 1-2 mo; cognitive impairment (CI), 4-5 mo; extracellular amyloid-β plaques (Aβ), 6-8 mo; plaques+neurofibrillary tangles (AβT), 12-15 mo]. NanoString technology nCounter miRNA Expression panel for mouse was used to screen for 599 miRNAs. RESULTS Significant (p < 0.05) downregulation of various miRNAs indicated transitions from young to CI (e.g., let-7g & miR-1944, males; miR-133a & miR-2140, females) and CI to Aβ (e.g., miR-99a, males) but not from Aβ to AβT. In addition, altered expression of select miRNAs from overall Pre-AD (young + CI) versus AD (Aβ+ AβT) were detected in both males (let-7d, let-7i, miR-23a, miR-34b-3p, miR-99a, miR-126-3p, miR-132, miR-150, miR-151-5p, miR-181a) and females (miR-150, miR-539). Altogether, at least 20 cerebrovascular miRNAs effectively delineate AD versus Pre-AD pathology. CONCLUSION Using the 3xTg-AD mouse model, these data demonstrate that cerebrovascular miRNAs pertaining to endothelial function, vascular permeability, angiogenesis, inflammation, and Aβ/tau metabolism can track early development of AD.
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Affiliation(s)
- Phoebe P Chum
- Basic Sciences, Loma Linda University, Loma Linda, CA, USA
| | - Md A Hakim
- Basic Sciences, Loma Linda University, Loma Linda, CA, USA
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Su Z, Ren N, Ling Z, Sheng L, Zhou S, Guo C, Ke Z, Xu T, Qin Z. Differential expression of microRNAs associated with neurodegenerative diseases and diabetic nephropathy in protein l-isoaspartyl methyltransferase-deficient mice. Cell Biol Int 2021; 45:2316-2330. [PMID: 34314072 DOI: 10.1002/cbin.11679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Revised: 07/15/2021] [Accepted: 07/24/2021] [Indexed: 11/05/2022]
Abstract
Protein l-isoaspartyl methyltransferase (PIMT/PCMT1), an enzyme repairing isoaspartate residues in peptides and proteins that result from the spontaneous decomposition of normal l-aspartyl and l-asparaginyl residues during aging, has been revealed to be involved in neurodegenerative diseases (NDDs) and diabetes. However, the molecular mechanisms for a putative association of PIMT dysfunction with these diseases have not been clarified. Our study aimed to identify differentially expressed microRNAs (miRNAs) in the brain and kidneys of PIMT-deficient mice and uncover the epigenetic mechanism of PIMT-involved NDDs and diabetic nephropathy (DN). Differentially expressed miRNAs by sequencing underwent target prediction and enrichment analysis in the brain and kidney of PIMT knockout (KO) mice and age-matched wild-type (WT) littermates. Sequence analysis revealed 40 differentially expressed miRNAs in the PIMT KO mouse brain including 25 upregulated miRNAs and 15 downregulated miRNAs. In the PIMT KO mouse kidney, there were 80 differentially expressed miRNAs including 40 upregulated miRNAs and 40 downregulated miRNAs. Enrichment analysis and a systematic literature review of differentially expressed miRNAs indicated the involvement of PIMT deficiency in the pathogenesis in NDDs and DN. Some overlapped differentially expressed miRNAs between the brain and kidney were quantitatively assessed in the brain, kidney, and serum-derived exosomes, respectively. Despite being preliminary, these results may aid in investigating the pathological hallmarks and identify the potential therapeutic targets and biomarkers for PIMT dysfunction-related NDDs and DN.
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Affiliation(s)
- Zhonghao Su
- Department of Febrile Disease, School of Basic Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Na Ren
- Department of Anatomy, School of Basic Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Zicheng Ling
- Department of Anatomy, School of Basic Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Lanyue Sheng
- Department of Anatomy, School of Basic Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Sirui Zhou
- Department of Anatomy, School of Basic Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Chunxia Guo
- Department of Anatomy, School of Basic Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Zunji Ke
- Academy of Integrative Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Tiefeng Xu
- Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Zhenxia Qin
- Department of Anatomy, School of Basic Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Academy of Integrative Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
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Agostini S, Mancuso R, Costa AS, Guerini FR, Trecate F, Miglioli R, Menna E, Arosio B, Clerici M. Sarcopenia associates with SNAP-25 SNPs and a miRNAs profile which is modulated by structured rehabilitation treatment. J Transl Med 2021; 19:315. [PMID: 34289870 PMCID: PMC8296538 DOI: 10.1186/s12967-021-02989-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Accepted: 07/14/2021] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND Sarcopenia is a loss of muscle mass and strength causing disability, morbidity, and mortality in older adults, which is characterized by alterations of the neuromuscular junctions (NMJs). SNAP-25 is essential for the maintenance of NMJ integrity, and the expression of this protein was shown to be modulated by the SNAP-25 rs363050 polymorphism and by a number of miRNAs. METHODS We analysed these parameters in a cohort of sarcopenic patients undergoing structured rehabilitation. The rs363050 genotype frequency distribution was analyzed in 177 sarcopenic patients and 181 healthy controls (HC). The concentration of seven miRNAs (miR-451a, miR-425-5p, miR155-5p, miR-421-3p, miR-495-3p, miR-744-5p and miR-93-5p), identified by mouse brain miRNome analysis to be differentially expressed in wild type compared to SNAP-25± heterozygous mice, was analyzed as well by droplet digital PCR (ddPCR) in a subgroup of severe sarcopenic patients undergoing rehabilitation. RESULTS The SNAP-25 rs363050 AA genotype was significantly more common in sarcopenic patients compared to HC (pc = 0.01); miR-451a was significantly up-regulated in these patients before rehabilitation. Rehabilitation modified miRNAs expression, as miR-155-5p, miR-421-3p, miR-451a, miR-425-5p, miR-744-5p and miR-93-5p expression was significantly up-regulated (p < 0.01), whereas that of miR-495-3p was significantly down-regulated (p < 0.001) by rehabilitation. Notably, rehabilitation-associated improvement of the muscle-skeletal SPPB score was significantly associated with the reduction of miR-451a expression. CONCLUSION These results support the hypothesis of a role for SNAP-25 in sarcopenia and suggest SNAP-25-associated miRNAs as circulatory biomarkers of rehabilitative outcome for sarcopenia.
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Affiliation(s)
- Simone Agostini
- IRCCS Fondazione Don Carlo Gnocchi ONLUS, P.zza Morandi, 3, 20100 Milan, Italy
| | - Roberta Mancuso
- IRCCS Fondazione Don Carlo Gnocchi ONLUS, P.zza Morandi, 3, 20100 Milan, Italy
| | - Andrea Saul Costa
- IRCCS Fondazione Don Carlo Gnocchi ONLUS, P.zza Morandi, 3, 20100 Milan, Italy
| | - Franca Rosa Guerini
- IRCCS Fondazione Don Carlo Gnocchi ONLUS, P.zza Morandi, 3, 20100 Milan, Italy
| | - Fabio Trecate
- IRCCS Fondazione Don Carlo Gnocchi ONLUS, P.zza Morandi, 3, 20100 Milan, Italy
| | - Rossella Miglioli
- IRCCS Fondazione Don Carlo Gnocchi ONLUS, P.zza Morandi, 3, 20100 Milan, Italy
| | - Elisabetta Menna
- CNR-Institute of Neuroscience, Milan, Italy
- Humanitas Clinical and Research Center–IRCCS, via Manzoni 56, 20089 Rozzano, MI Italy
| | - Beatrice Arosio
- Geriatric Unit, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milan, Italy
- Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
| | - Mario Clerici
- IRCCS Fondazione Don Carlo Gnocchi ONLUS, P.zza Morandi, 3, 20100 Milan, Italy
- Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy
| | - the SA. M. B. A. project
- IRCCS Fondazione Don Carlo Gnocchi ONLUS, P.zza Morandi, 3, 20100 Milan, Italy
- CNR-Institute of Neuroscience, Milan, Italy
- Humanitas Clinical and Research Center–IRCCS, via Manzoni 56, 20089 Rozzano, MI Italy
- Geriatric Unit, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milan, Italy
- Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
- Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy
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Van der Auwera S, Ameling S, Nauck M, Völzke H, Völker U, Grabe HJ. Association between different dimensions of childhood traumatization and plasma micro-RNA levels in a clinical psychiatric sample. J Psychiatr Res 2021; 139:113-119. [PMID: 34058649 DOI: 10.1016/j.jpsychires.2021.05.023] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 04/26/2021] [Accepted: 05/20/2021] [Indexed: 09/30/2022]
Abstract
As an epigenetic regulator micro-RNAs (miRNAs) have gained increasing attention in biomarker research for diseases. Many studies point towards an involvement of miRNAs in neuropsychiatric disorders such as Alzheimer's Disease, schizophrenia or depression. In a recent study we identified a possible relationship between childhood traumatization and miRNAs associated with Alzheimer's Disease in the general population as well as in a small psychiatric clinical sample. In this study we aimed to confirm this biological link in an independent psychiatric clinical sample (N = 104) and to also explore the impact of different childhood trauma dimensions (sum score, abuse dimension and neglect dimension). Analyses revealed their different impact on disease in the combined sample (N = 154; N = 50 from the recent study). We could confirm associations for all of the four recently identified miRNAs in the replication sample (N = 104) on a suggested significance level of p < 0.08 (two with p < 0.05). In the combined sample (N = 154) fifteen miRNAs were significantly associated with the childhood trauma sum score after correction for multiple testing. Most of them showed recently significant associations for Alzheimer's Disease. For the subscores of abuse and neglect only one miRNA was identified in addition, associated with childhood neglect. Bioinformatics analysis identified significant brain-related pathways regulated by the respective miRNAs. At the time of publication our study is the largest study of the association between childhood trauma and miRNAs in a clinical psychiatric sample. The confirmation of our previous results supports the relevance of the association between childhood traumatization and Alzheimer's Disease through miRNA regulation of brain-related pathways.
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Affiliation(s)
- Sandra Van der Auwera
- Department of Psychiatry and Psychotherapy, University Medicine Greifswald, Greifswald, Germany; German Centre for Neurodegenerative Diseases (DZNE), Site Rostock, Greifswald, Germany.
| | - Sabine Ameling
- Interfaculty Institute for Genetics and Functional Genomics, University Medicine Greifswald, Germany; German Centre for Cardiovascular Research (DZHK), Partner Site Greifswald, Greifswald, Germany
| | - Matthias Nauck
- German Centre for Cardiovascular Research (DZHK), Partner Site Greifswald, Greifswald, Germany; Institute of Clinical Chemistry and Laboratory Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Henry Völzke
- German Centre for Cardiovascular Research (DZHK), Partner Site Greifswald, Greifswald, Germany; Institute for Community Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Uwe Völker
- Interfaculty Institute for Genetics and Functional Genomics, University Medicine Greifswald, Germany; German Centre for Cardiovascular Research (DZHK), Partner Site Greifswald, Greifswald, Germany
| | - Hans J Grabe
- Department of Psychiatry and Psychotherapy, University Medicine Greifswald, Greifswald, Germany; German Centre for Neurodegenerative Diseases (DZNE), Site Rostock, Greifswald, Germany
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11
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Wang H, Wang X, Zhang Y, Zhao J. LncRNA SNHG1 promotes neuronal injury in Parkinson's disease cell model by miR-181a-5p/CXCL12 axis. J Mol Histol 2021; 52:153-163. [PMID: 33389428 DOI: 10.1007/s10735-020-09931-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Accepted: 11/24/2020] [Indexed: 11/30/2022]
Abstract
Small molecule RNA host gene 1 (SNHG1) has been found to be an important regulator in the neurotoxicity of Parkinson's disease (PD). However, the underlying molecular mechanisms of SNHG1 in PD remains elusive. The expression of SNHG1, microRNA (miR)-181a-5p, and C-X-C motif chemokine 12 (CXCL12) mRNA was detected using quantitative real-time polymerase chain reaction. Cell viability and apoptosis were analyzed by cell counting kit-8 and Flow cytometry, respectively. Western blot was utilized to determine the levels of B-cell lymphoma-2 (Bcl-2), CyclinD1, Cleaved-caspase-3, and CXCL12 protein. The interaction between miR-181a-5p and SNHG1 or CXCL12 was confirmed by the dual-luciferase reporter assay. We discovered that SNHG1 was significantly elevated, while miR-181a-5p was decreased in N-methyl-4-phenylpyridinium (MPP+)-treated neuroblastoma cells in dose-dependent manners. MPP+ induced cell viability inhibition and apoptosis promotion, while these effects were reversed by SNHG1 knockdown or miR-181a-5p re-expression. SNHG1 directly bound to miR-181a-5p, and miR-181a-5p inhibition could block the action of SNHG1 knockdown on MPP+-induced neurotoxicity in neuroblastoma cells. CXCL12 was identified as a downstream target of miR-181a-5p, and the impact of miR-181a-5p on MPP+-induced neuronal damage could be attenuated by CXCL12 overexpression. Besides, SNHG1 could indirectly regulate CXCL12 expression via miR-181a-5p. We demonstrated that SNHG1 promoted MPP+ induced neuronal injury in neuroblastoma cells by regulating miR-181a-5p/CXCL12 axis, suggesting SNHG1 might contribute to the development of PD, which provided a novel insight into the pathogenesis and treatment of PD.
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Affiliation(s)
- Hui Wang
- Department of Internal Neurology, The 966th Hospital of the Joint Service Support Force, No.19, Shijing Street, 118000, Dandong, Liaoning, China
| | - Xiaopeng Wang
- Department of Internal Neurology, The 966th Hospital of the Joint Service Support Force, No.19, Shijing Street, 118000, Dandong, Liaoning, China
| | - Yiying Zhang
- University of Army Engineering, Nanjing, Jiangsu, China
| | - Jianchuan Zhao
- Department of Internal Neurology, The 966th Hospital of the Joint Service Support Force, No.19, Shijing Street, 118000, Dandong, Liaoning, China.
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12
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Hu RT, Yu Q, Zhou SD, Yin YX, Hu RG, Lu HP, Hu BL. Co-expression Network Analysis Reveals Novel Genes Underlying Alzheimer's Disease Pathogenesis. Front Aging Neurosci 2020; 12:605961. [PMID: 33324198 PMCID: PMC7725685 DOI: 10.3389/fnagi.2020.605961] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Accepted: 11/04/2020] [Indexed: 12/14/2022] Open
Abstract
Background: The pathogenesis of Alzheimer’s disease (AD) remains to be elucidated. This study aimed to identify the hub genes in AD pathogenesis and determine their functions and pathways. Methods: A co-expression network for an AD gene dataset with 401 samples was constructed, and the AD status-related genes were screened. The hub genes of the network were identified and validated by an independent cohort. The functional pathways of hub genes were analyzed. Results: The co-expression network revealed a module that related to the AD status, and 101 status-related genes were screened from the trait-related module. Gene enrichment analysis indicated that these status-related genes are involved in synaptic processes and pathways. Four hub genes (ENO2, ELAVL4, SNAP91, and NEFM) were identified from the module, and these hub genes all participated in AD-related pathways, but the associations of each gene with clinical features were variable. An independent dataset confirmed the different expression of hub genes between AD and controls. Conclusions: Four novel genes associated with AD pathogenesis were identified and validated, which provided novel therapeutic targets for AD.
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Affiliation(s)
- Rui-Ting Hu
- Department of Neurology, Minzu Hospital of Guangxi Zhuang Autonomous Region, Nanning, China
| | - Qian Yu
- Department of Pharmacy, Affiliated Hospital of Guilin Medical University, Guilin, China
| | - Shao-Dan Zhou
- Department of Neurology, Minzu Hospital of Guangxi Zhuang Autonomous Region, Nanning, China
| | - Yi-Xin Yin
- Department of Research, Guangxi Medical University Cancer Hospital, Nanning, China
| | - Rui-Guang Hu
- Department of Neurology, Minzu Hospital of Guangxi Zhuang Autonomous Region, Nanning, China
| | - Hai-Peng Lu
- Department of Pharmacy, Minzu Hospital of Guangxi Zhuang Autonomous Region, Nanning, China
| | - Bang-Li Hu
- Department of Research, Guangxi Medical University Cancer Hospital, Nanning, China
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13
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Pawlina-Tyszko K, Oczkowicz M, Gurgul A, Szmatoła T, Bugno-Poniewierska M. MicroRNA profiling of the pig periaqueductal grey (PAG) region reveals candidates potentially related to sex-dependent differences. Biol Sex Differ 2020; 11:67. [PMID: 33451362 PMCID: PMC7809845 DOI: 10.1186/s13293-020-00343-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Accepted: 11/17/2020] [Indexed: 11/10/2022] Open
Abstract
Background MicroRNAs indirectly orchestrate myriads of essential biological processes. A wide diversity of miRNAs of the neurodevelopmental importance characterizes the brain tissue, which, however, exhibits region-specific miRNA profile differences. One of the most conservative regions of the brain is periaqueductal grey (PAG) playing vital roles in significant functions of this organ, also those observed to be sex-influenced. The domestic pig is an important livestock species but is also believed to be an excellent human model. This is of particular importance for neurological research because of the similarity of pig and human brains as well as difficult access to human samples. However, the pig PAG profile has not been characterized so far. Moreover, molecular bases of sex differences connected with brain functioning, including miRNA expression profiles, have not been fully deciphered yet. Methods Thus, in this study, we applied next-generation sequencing to characterize pig PAG expressed microRNAs. Furthermore, we performed differential expression analysis between females and males to identify changes of the miRNA profile and reveal candidates underlying sex-related differences. Results As a result, known brain-enriched, and new miRNAs which will expand the available profile, were identified. The downstream analysis revealed 38 miRNAs being differentially expressed (DE) between female and male samples. Subsequent pathway analysis showed that they enrich processes vital for neuron growth and functioning, such as long-term depression and axon guidance. Among the identified sex-influenced miRNAs were also those associated with the PAG physiology and diseases related to this region. Conclusions The obtained results broaden the knowledge on the porcine PAG miRNAome, along with its dynamism reflected in different isomiR signatures. Moreover, they indicate possible mechanisms associated with sex-influenced differences mediated via miRNAs in the PAG functioning. They also provide candidate miRNAs for further research concerning, i.e., sex-related bases of physiological and pathological processes occurring in the nervous system. Graphical abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1186/s13293-020-00343-2.
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Affiliation(s)
- Klaudia Pawlina-Tyszko
- Department of Animal Molecular Biology, National Research Institute of Animal Production, Krakowska 1, 32-083, Balice, Kraków, Poland.
| | - Maria Oczkowicz
- Department of Animal Molecular Biology, National Research Institute of Animal Production, Krakowska 1, 32-083, Balice, Kraków, Poland
| | - Artur Gurgul
- Department of Animal Molecular Biology, National Research Institute of Animal Production, Krakowska 1, 32-083, Balice, Kraków, Poland.,Center for Experimental and Innovative Medicine, University of Agriculture in Kraków, Rędzina 1c, 30-248, Kraków, Poland
| | - Tomasz Szmatoła
- Department of Animal Molecular Biology, National Research Institute of Animal Production, Krakowska 1, 32-083, Balice, Kraków, Poland.,Center for Experimental and Innovative Medicine, University of Agriculture in Kraków, Rędzina 1c, 30-248, Kraków, Poland
| | - Monika Bugno-Poniewierska
- Department of Animal Reproduction, Anatomy and Genomics, University of Agriculture in Kraków, al. Mickiewicza 24/28, 30-059, Kraków, Poland
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14
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Thomas L, Florio T, Perez-Castro C. Extracellular Vesicles Loaded miRNAs as Potential Modulators Shared Between Glioblastoma, and Parkinson's and Alzheimer's Diseases. Front Cell Neurosci 2020; 14:590034. [PMID: 33328891 PMCID: PMC7671965 DOI: 10.3389/fncel.2020.590034] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 10/07/2020] [Indexed: 12/14/2022] Open
Abstract
Glioblastoma (GBM) is the deadliest brain tumor. Its poor prognosis is due to cell heterogeneity, invasiveness, and high vascularization that impede an efficient therapeutic approach. In the past few years, several molecular links connecting GBM to neurodegenerative diseases (NDDs) were identified at preclinical and clinical level. In particular, giving the increasing critical role that epigenetic alterations play in both GBM and NDDs, we deeply analyzed the role of miRNAs, small non-coding RNAs acting epigenetic modulators in several key biological processes. Specific miRNAs, transported by extracellular vesicles (EVs), act as intercellular communication signals in both diseases. In this way, miRNA-loaded EVs modulate GBM tumorigenesis, as they spread oncogenic signaling within brain parenchyma, and control the aggregation of neurotoxic protein (Tau, Aβ-amyloid peptide, and α-synuclein) in NDDs. In this review, we highlight the most promising miRNAs linking GBM and NDDs playing a significant pathogenic role in both diseases.
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Affiliation(s)
- Laura Thomas
- Instituto de Investigación en Biomedicina de Buenos Aires – Consejo Nacional de Investigaciones Científicas y Técnicas – Partner Institute of the Max Planck Society, Buenos Aires, Argentina
| | - Tullio Florio
- Sezione di Farmacologia, Dipartimento di Medicina Interna and Centro di Eccellenza per la Ricerca Biomedica, Università di Genova, Genova, Italy
- IRCCS Ospedale Policlinico San Martino, Genova, Italy
| | - Carolina Perez-Castro
- Instituto de Investigación en Biomedicina de Buenos Aires – Consejo Nacional de Investigaciones Científicas y Técnicas – Partner Institute of the Max Planck Society, Buenos Aires, Argentina
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15
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Soleimani Zakeri NS, Pashazadeh S, MotieGhader H. Gene biomarker discovery at different stages of Alzheimer using gene co-expression network approach. Sci Rep 2020; 10:12210. [PMID: 32699331 PMCID: PMC7376049 DOI: 10.1038/s41598-020-69249-8] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Accepted: 07/08/2020] [Indexed: 12/24/2022] Open
Abstract
Alzheimer's disease (AD) is a chronic neurodegenerative disorder. It is the most common type of dementia that has remained as an incurable disease in the world, which destroys the brain cells irreversibly. In this study, a systems biology approach was adopted to discover novel micro-RNA and gene-based biomarkers of the diagnosis of Alzheimer's disease. The gene expression data from three AD stages (Normal, Mild Cognitive Impairment, and Alzheimer) were used to reconstruct co-expression networks. After preprocessing and normalization, Weighted Gene Co-Expression Network Analysis (WGCNA) was used on a total of 329 samples, including 145 samples of Alzheimer stage, 80 samples of Mild Cognitive Impairment (MCI) stage, and 104 samples of the Normal stage. Next, three gene-miRNA bipartite networks were reconstructed by comparing the changes in module groups. Then, the functional enrichment analyses of extracted genes of three bipartite networks and miRNAs were done, respectively. Finally, a detailed analysis of the authentic studies was performed to discuss the obtained biomarkers. The outcomes addressed proposed novel genes, including MBOAT1, ARMC7, RABL2B, HNRNPUL1, LAMTOR1, PLAGL2, CREBRF, LCOR, and MRI1and novel miRNAs comprising miR-615-3p, miR-4722-5p, miR-4768-3p, miR-1827, miR-940 and miR-30b-3p which were related to AD. These biomarkers were proposed to be related to AD for the first time and should be examined in future clinical studies.
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Affiliation(s)
| | - Saeid Pashazadeh
- Faculty of Electrical and Computer Engineering, University of Tabriz, Tabriz, Iran.
| | - Habib MotieGhader
- Department of Computer Engineering, Gowgan Educational Center, Tabriz Branch, Islamic Azad University, Tabriz, Iran
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16
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Tao Y, Han Y, Yu L, Wang Q, Leng SX, Zhang H. The Predicted Key Molecules, Functions, and Pathways That Bridge Mild Cognitive Impairment (MCI) and Alzheimer's Disease (AD). Front Neurol 2020; 11:233. [PMID: 32308643 PMCID: PMC7145962 DOI: 10.3389/fneur.2020.00233] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2019] [Accepted: 03/11/2020] [Indexed: 12/11/2022] Open
Abstract
To elucidate the key molecules, functions, and pathways that bridge mild cognitive impairment (MCI) and Alzheimer's disease (AD), we investigated open gene expression data sets. Differential gene expression profiles were analyzed and combined with potential MCI- and AD-related gene expression profiles in public databases. Then, weighted gene co-expression network analysis was performed to identify the gene co-expression modules. One module was significantly negatively associated with MCI samples, in which gene ontology function and Kyoto Encyclopedia of Genes and Genomes pathway enrichment analysis showed that these genes were related to cytosolic ribosome, ribosomal structure, oxidative phosphorylation, AD, and metabolic pathway. The other two modules correlated significantly with AD samples, in which functional and pathway enrichment analysis revealed strong relationships of these genes with cytoplasmic ribosome, protein binding, AD, cancer, and apoptosis. In addition, we regarded the core genes in the module network closely related to MCI and AD as bridge genes and submitted them to protein interaction network analysis to screen for major pathogenic genes according to the connectivity information. Among them, small nuclear ribonucleoprotein D2 polypeptide (SNRPD2), ribosomal protein S3a (RPS3A), S100 calcium binding protein A8 (S100A8), small nuclear ribonucleoprotein polypeptide G (SNRPG), U6 snRNA-associated Sm-like protein LSm3 (LSM3), ribosomal protein S27a (RPS27A), and ATP synthase F1 subunit gamma (ATP5C1) were not only major pathogenic genes of MCI, but also bridge genes. In addition, SNRPD2, RPS3A, S100A8, SNRPG, LSM3, thioredoxin (TXN), proteasome 20S subunit alpha 4 (PSMA4), annexin A1 (ANXA1), DnaJ heat shock protein family member A1 (DNAJA1), and prefoldin subunit 5 (PFDN5) were not only major pathogenic genes of AD, but also bridge genes. Next, we screened for differentially expressed microRNAs (miRNAs) to predict the miRNAs and transcription factors related the MCI and AD modules, respectively. The significance score of miRNAs in each module was calculated using a hypergeometric test to obtain the miRNApivot-Module interaction pair. Thirty-four bridge regulators were analyzed, among which hsa-miR-519d-3p was recognized as the bridge regulator between MCI and AD. Our study contributed to a better understanding of the pathogenic mechanisms of MCI and AD, and might lead to the development of a new strategy for clinical diagnosis and treatment.
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Affiliation(s)
- Ye Tao
- Department of Geriatrics, The First Affiliated Hospital of China Medical University, Shenyang, China
| | - Yu Han
- Department of Neurology, Jinqiu Hospital of Liaoning Province, Shenyang, China
| | - Lujiao Yu
- Department of Geriatrics, The First Affiliated Hospital of China Medical University, Shenyang, China
| | - Qi Wang
- Department of Geriatrics, The First Affiliated Hospital of China Medical University, Shenyang, China
| | - Sean X Leng
- Division of Geriatric Medicine and Gerontology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Haiyan Zhang
- Department of Geriatrics, The First Affiliated Hospital of China Medical University, Shenyang, China
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17
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Wei S, Peng L, Yang J, Sang H, Jin D, Li X, Chen M, Zhang W, Dang Y, Zhang G. Exosomal transfer of miR-15b-3p enhances tumorigenesis and malignant transformation through the DYNLT1/Caspase-3/Caspase-9 signaling pathway in gastric cancer. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2020; 39:32. [PMID: 32039741 PMCID: PMC7011526 DOI: 10.1186/s13046-019-1511-6] [Citation(s) in RCA: 69] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Accepted: 12/17/2019] [Indexed: 02/10/2023]
Abstract
Background Exosomes are essential for tumor growth, metastasis, and are used as novel signaling molecules in targeted therapies. Therefore, exosomal miRNAs can be used in new diagnostic and therapeutic approaches due to their involvement in the development of cancers. However, the detailed biological function, potential molecular mechanism and clinical application of exo-miR-15b-3p in gastric cancer (GC) remains unclear. Methods miR-15b-3p mRNA levels in tissues, serum, cells and exosomes were analyzed using qRT-PCR assays. qRT-PCR, immunohistochemical and western blotting analyses were utilized for the determination of DYNLT1 expression. The interrelationship connecting miR-15b-3p with DYNLT1 was verified using Dual-luciferase report, western blotting and qRT-PCR assays. Fluorescent PKH-26 or GFP-Lv-CD63 labeled exosomes, as well as Cy3-miR-15b-3p, were utilized to determine the efficacy of the transfer of exo-miR-15b-3p between BGC-823 and recipient cells. Several in vitro assays and xenograft tumor models were conducted to determine exo-miR-15b-3p impact on GC progression. Results This is the first study to confirm high miR-15b-3p expression in GC cell lines, tissues and serum. Exosomes obtained from 108 GC patient serum samples and GC cell-conditioned medium were found to show upregulation of exo-miR-15b-3p, with the area under the ROC curve (AUC) being 0.820 [0.763–0.876], which is superior to the AUC of tissues and serum miR-15b-3p (0.674 [0.600–0.748] and 0.642 [0.499–0.786], respectively). In addition, high exo-miR-15b-3p expression in serum was found to accurately predict worse overall survival. SGC-7901 and GES-1 cells are capable of internalizing BGC-823 cell-derived exosomes, allowing the transfer of miR-15b-3p. Migration, invasion, proliferation and inhibition of apoptosis in vitro and in vivo were enhanced by exo-miR-15b-3p, by restraining DYNLT1, Cleaved Caspase-9 and Caspase-3 expression. Conclusions This study identified a previously unknown regulatory pathway, exo-miR-15b-3p/DYNLT1/Caspase-3/Caspase-9, which promotes GC development and GES-1 cell malignant transformation. Therefore, serum exo-miR-15b-3p may be a potential GC diagnosis and prognosis biomarker, which can be used in precise targeted GC therapy.
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Affiliation(s)
- Shuchun Wei
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China
| | - Lei Peng
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China
| | - Jiajia Yang
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China
| | - Huaiming Sang
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China
| | - Duochen Jin
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China
| | - Xuan Li
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China
| | - Meihong Chen
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China
| | - Weifeng Zhang
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China
| | - Yini Dang
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China.
| | - Guoxin Zhang
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China.
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MiR-23a-3p promoted G1/S cell cycle transition by targeting protocadherin17 in hepatocellular carcinoma. J Physiol Biochem 2020; 76:123-134. [PMID: 31994011 DOI: 10.1007/s13105-020-00726-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2019] [Accepted: 01/12/2020] [Indexed: 12/21/2022]
Abstract
MiR-23a-3p has been shown to promote liver cancer cell growth and metastasis and regulate that of chemosensitivity. Protocadherin17 (PCDH17) is a tumor suppressor gene and plays an essential part in cell cycle of hepatocellular carcinoma (HCC). This study aimed at evaluating the effects of miR-23a-3p and PCDH17 on HCC cell cycle and underlining the mechanism. The level of miR-23a-3p was up-regulated, while PCDH17 level was down-regulated in HCC tissues compared to adjacent tissues. For the in vitro studies, high expression of miR-23a-3p down-regulated PCDH17 level; increased cell viability; promoted G1/S cell cycle transition; up-regulated cyclin D1, cyclin E, CDK2, CDK4, p-p27, and p-RB levels; and down-regulated the expression of p27. Dual luciferase reporter assay suggested PCDH17 was a target gene of miR-23a-3p. MiR-23a-3p inhibitor and PCDH17 siRNA led to an increase in cell viability and the number of cells in the S phase and up-regulated cyclin D1 and cyclin E levels, compared with miR-23a-3p inhibitor and NC siRNA group. For the in vivo experiments, high expression of miR-23a-3p promoted tumor growth and reduced PCDH17 level in the cytoplasm. These results indicated that high expression of miR-23a-3p might promote G1/S cell cycle transition by targeting PCDH17 in HCC cells. The miR-23a-3p could be considered as a molecular target for HCC detection.
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