scholarly journals Potential Roles of Exosomal lncRNAs in the Intestinal Mucosal Immune Barrier

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Shanshan Chen ◽  
Ruonan He ◽  
Beihui He ◽  
Li Xu ◽  
Shuo Zhang
Keyword(s):  
Potential Role ◽  
Immune Cell ◽  
Cell Communication ◽  
Noncoding Rnas ◽  
Phospholipid Bilayer ◽  
Pathogenic Microorganisms ◽  
Micro Rnas ◽  
Physiologically Active Substances ◽  
Active Substances

The intestinal mucosal immune barrier protects the host from the invasion of foreign pathogenic microorganisms. Immune cells and cytokines in the intestinal mucosa maintain local and systemic homeostasis by participating in natural and adaptive immunity. Deficiency of the intestinal mucosal immune barrier is associated with a variety of intestinal illnesses. Exosomes are phospholipid bilayer nanovesicles that allow cell-cell communication by secreting physiologically active substances including proteins, lipids, transcription factors, mRNAs, micro-RNAs (miRNAs), and long noncoding RNAs (lncRNAs). Exosomal lncRNAs are involved in immune cell differentiation and the modulation of the immune response. This review briefly introduces the potential role of exosomal lncRNAs in the intestinal mucosal immune barrier and discusses their relevance to intestinal illnesses.

scholarly journals The Role of Platelets in Cancer Pathophysiology: Focus on Malignant Glioma

Cancers ◽  
2019 ◽  
Vol 11 (4) ◽  
pp. 569 ◽  
Author(s):  
Sascha Marx ◽  
Yong Xiao ◽  
Marcel Baschin ◽  
Maximilian Splittstöhser ◽  
Robert Altmann ◽  
...  
Keyword(s):  
Malignant Glioma ◽  
Immune Cells ◽  
Potential Role ◽  
Immune Cell ◽  
Malignant Gliomas ◽  
Cell Communication ◽  
Distant Metastases ◽  
Sphingosine 1 Phosphate ◽  
The Central Nervous System

The link between thrombocytosis and malignancy has been well known for many years and its associations with worse outcomes have been reported mainly for solid tumors. Besides measuring platelet count, it has become popular to assess platelet function in the context of malignant diseases during the last decade. Malignant gliomas differ tremendously from malignancies outside the central nervous system because they virtually never form distant metastases. This review summarizes the current understanding of the platelet–immune cell communication and its potential role in glioma resistance and progression. Particularly, we focus on platelet-derived proinflammatory modulators, such as sphingosine-1-phosphate (S1P). The multifaceted interaction with immune cells puts the platelet into an interesting perspective regarding the recent advances in immunotherapeutic approaches in malignant glioma.

Neurotoxic and Neuroprotective Role of Exosomes in Parkinson’s Disease

2020 ◽  
Vol 25 (42) ◽  
pp. 4510-4522 ◽  
Author(s):  
Biancamaria Longoni ◽  
Irene Fasciani ◽  
Shivakumar Kolachalam ◽  
Ilaria Pietrantoni ◽  
Francesco Marampon ◽  
...  
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Potential Role ◽  
Current Knowledge ◽  
Biological Fluids ◽  
Cell Communication ◽  
Target Cells ◽  
Cellular Debris ◽  
The Brain

: Exosomes are extracellular vesicles produced by eukaryotic cells that are also found in most biological fluids and tissues. While they were initially thought to act as compartments for removal of cellular debris, they are now recognized as important tools for cell-to-cell communication and for the transfer of pathogens between the cells. They have attracted particular interest in neurodegenerative diseases for their potential role in transferring prion-like proteins between neurons, and in Parkinson’s disease (PD), they have been shown to spread oligomers of α-synuclein in the brain accelerating the progression of this pathology. A potential neuroprotective role of exosomes has also been equally proposed in PD as they could limit the toxicity of α-synuclein by clearing them out of the cells. Exosomes have also attracted considerable attention for use as drug vehicles. Being nonimmunogenic in nature, they provide an unprecedented opportunity to enhance the delivery of incorporated drugs to target cells. In this review, we discuss current knowledge about the potential neurotoxic and neuroprotective role of exosomes and their potential application as drug delivery systems in PD.

Potential role of micro-RNAs in head and neck tumorigenesis

Head & Neck ◽  
2010 ◽  
Vol 32 (8) ◽  
pp. 1099-1111 ◽  
Author(s):  
Nham Tran ◽  
Christopher J. O'Brien ◽  
Jonathan Clark ◽  
Barbara Rose
Keyword(s):  
Head And Neck ◽  
Potential Role ◽  
Micro Rnas

scholarly journals Emerging Role of Exosomes in Tuberculosis: From Immunity Regulations to Vaccine and Immunotherapy

2021 ◽  
Vol 12 ◽  
Author(s):  
Yin-Fu Sun ◽  
Jiang Pi ◽  
Jun-Fa Xu
Keyword(s):  
Immune Responses ◽  
Delivery System ◽  
Immune Modulation ◽  
Immune Cell ◽  
Critical Role ◽  
Cell Communication ◽  
Immune Defense ◽  
Research Progress ◽  
Recent Research Progress

Exosomes are cell-derived nanovesicles carrying protein, lipid, and nucleic acid for secreting cells, and act as significant signal transport vectors for cell-cell communication and immune modulation. Immune-cell-derived exosomes have been found to contain molecules involved in immunological pathways, such as MHCII, cytokines, and pathogenic antigens. Tuberculosis (TB), caused by Mycobacterium tuberculosis (MTB), remains one of the most fatal infectious diseases. The pathogen for tuberculosis escapes the immune defense and continues to replicate despite rigorous and complicate host cell mechanisms. The infected-cell-derived exosomes under this circumstance are found to trigger different immune responses, such as inflammation, antigen presentation, and activate subsequent pathways, highlighting the critical role of exosomes in anti-MTB immune response. Additionally, as a novel kind of delivery system, exosomes show potential in developing new vaccination and treatment of tuberculosis. We here summarize recent research progress regarding exosomes in the immune environment during MTB infection, and further discuss the potential of exosomes as delivery system for novel anti-MTB vaccines and therapies.

scholarly journals Neuroinflammation and Its Impact on the Pathogenesis of COVID-19

2021 ◽  
Vol 8 ◽  
Author(s):  
Mohammed M. Almutairi ◽  
Farzane Sivandzade ◽  
Thamer H. Albekairi ◽  
Faleh Alqahtani ◽  
Luca Cucullo
Keyword(s):  
Immune System ◽  
Molecular Mechanisms ◽  
Potential Role ◽  
Immune Cell ◽  
Clinical Manifestations ◽  
Cell Infiltration ◽  
Cellular Mechanisms ◽  
Cytokine Levels

Coronavirus disease 2019 (COVID-19) is an infectious disease caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The clinical manifestations of COVID-19 include dry cough, difficult breathing, fever, fatigue, and may lead to pneumonia and respiratory failure. There are significant gaps in the current understanding of whether SARS-CoV-2 attacks the CNS directly or through activation of the peripheral immune system and immune cell infiltration. Although the modality of neurological impairments associated with COVID-19 has not been thoroughly investigated, the latest studies have observed that SARS-CoV-2 induces neuroinflammation and may have severe long-term consequences. Here we review the literature on possible cellular and molecular mechanisms of SARS-CoV-2 induced-neuroinflammation. Activation of the innate immune system is associated with increased cytokine levels, chemokines, and free radicals in the SARS-CoV-2-induced pathogenic response at the blood-brain barrier (BBB). BBB disruption allows immune/inflammatory cell infiltration into the CNS activating immune resident cells (such as microglia and astrocytes). This review highlights the molecular and cellular mechanisms involved in COVID-19-induced neuroinflammation, which may lead to neuronal death. A better understanding of these mechanisms will help gain substantial knowledge about the potential role of SARS-CoV-2 in neurological changes and plan possible therapeutic intervention strategies.

scholarly journals Oncogenic Role of Exosomal Circular and Long Noncoding RNAs in Gastrointestinal Cancers

2022 ◽  
Vol 23 (2) ◽  
pp. 930
Author(s):  
Ba Da Yun ◽  
Ye Ji Choi ◽  
Seung Wan Son ◽  
Gabriel Adelman Cipolla ◽  
Fernanda Costa Brandão Berti ◽  
...  
Keyword(s):  
Epithelial To Mesenchymal Transition ◽  
Cell Communication ◽  
Noncoding Rnas ◽  
Long Noncoding Rnas ◽  
Circular Rnas ◽  
Gastrointestinal Cancers ◽  
Gastrointestinal Malignancies ◽  
Mesenchymal Transition ◽  
Novel Therapeutic Strategies

Circular RNAs (circRNAs) and long noncoding RNAs (lncRNAs) are differentially expressed in gastrointestinal cancers. These noncoding RNAs (ncRNAs) regulate a variety of cellular activities by physically interacting with microRNAs and proteins and altering their activity. It has also been suggested that exosomes encapsulate circRNAs and lncRNAs in cancer cells. Exosomes are then discharged into the extracellular environment, where they are taken up by other cells. As a result, exosomal ncRNA cargo is critical for cell–cell communication within the cancer microenvironment. Exosomal ncRNAs can regulate a range of events, such as angiogenesis, metastasis, immune evasion, drug resistance, and epithelial-to-mesenchymal transition. To set the groundwork for developing novel therapeutic strategies against gastrointestinal malignancies, a thorough understanding of circRNAs and lncRNAs is required. In this review, we discuss the function and intrinsic features of oncogenic circRNAs and lncRNAs that are enriched within exosomes.

scholarly journals The role of exosomal lncRNAs in cancer biology and clinical management

2021 ◽  
Author(s):  
Wuwen Zhang ◽  
Qinshi Wang ◽  
Yi Yang ◽  
Siyuan Zhou ◽  
Ping Zhang ◽  
...  
Keyword(s):  
Clinical Management ◽  
Cancer Biology ◽  
Cell Communication ◽  
Noncoding Rnas ◽  
Vital Role ◽  
Cancer Development ◽  
Cancer Cell Proliferation ◽  
Diagnosis And Prognosis ◽  
Multiple Processes

AbstractExosomes play a vital role in cell–cell communication within the cancer microenvironment. Exosomal long noncoding RNAs (lncRNAs) are important regulators in cancer development and are involved in multiple processes, including cancer cell proliferation, angiogenesis, metastasis, drug resistance, and immunomodulation. Changes in the levels of exosomal lncRNAs often appear with the occurrence and development of cancer. Therefore, exosomal lncRNAs can be used as biomarkers for cancer diagnosis and prognosis. Exosomal lncRNAs can also indicate the treatment response of patients receiving chemotherapy. Moreover, exosomal lncRNAs are potential therapeutic targets for cancer treatment. In this review, we summarize the role of exosomal lncRNAs in cancer biology as well as in clinical management. A more comprehensive and in-depth understanding of the role of exosomal lncRNAs in cancer may help us better understand the mechanism of cancer development and clinically manage cancer patients.

scholarly journals Are Long Noncoding RNAs New Potential Biomarkers in Gastrointestinal Stromal Tumors (GISTs)? The Role of H19 and MALAT1

2019 ◽  
Vol 2019 ◽  
pp. 1-7 ◽  
Author(s):  
Giuseppe Badalamenti ◽  
Nadia Barraco ◽  
Lorena Incorvaia ◽  
Antonio Galvano ◽  
Daniele Fanale ◽  
...  
Keyword(s):  
Potential Role ◽  
Noncoding Rnas ◽  
Long Noncoding Rnas ◽  
Pcr Analysis ◽  
Tumor Aggressiveness ◽  
Mutation Status ◽  
Expression Levels ◽  
Tissue Specimens ◽  
Selection Of

Long noncoding RNAs (lncRNAs) are emerging as key regulators of genetic and epigenetic networks, and their deregulation may underlie complex diseases, such as carcinogenesis. Several studies described lncRNA alterations in patients with solid tumors. In particular, HOTAIR upregulation has been associated with tumor aggressiveness, metastasis, and poor survival in gastrointestinal stromal tumor (GIST) patients. We analyzed expression levels of other lncRNAs, H19 and MALAT1, in FFPE tissue specimens from 40 surgically resected and metastatic GIST patients, using real-time PCR analysis. H19 and MALAT1 were both upregulated in 50% of GIST patients. MALAT1 lncRNA expression levels seem to be correlated with c-KIT mutation status. The percentage of both H19 and MALAT1 upregulation was significantly higher in patients with time to progression (TTP) < 6 months as compared to patients with TTP > 6 months. The median TTP was significantly lower in patients with both H19 and MALAT1 lncRNA upregulation as compared to those with lncRNA downregulation. These data suggest a potential role for both H19 and MALAT1 lncRNAs as prognostic biomarker for the clinical selection of the best candidate to first-line treatment with imatinib.

scholarly journals The role of miRNAs in COVID-19 disease

2021 ◽  
Vol 16 (4) ◽  
pp. 301-306
Author(s):  
Mona Fani ◽  
Milad Zandi ◽  
Saeedeh Ebrahimi ◽  
Saber Soltani ◽  
Samaneh Abbasi
Keyword(s):  
Potential Role ◽  
Therapeutic Option ◽  
Noncoding Rnas ◽  
Sars Coronavirus ◽  
Cellular Mirnas ◽  
Human Contact ◽  
In Cells

Nowadays, the SARS Coronavirus 2 (SARS-CoV-2) infection is recognized as the primary cause of mortality in humans. SARS-CoV-2 is transmitted through human-to-human contact and is asymptomatic in most patients. In addition to approved vaccines against SARS-CoV-2 infection, miRNAs may also be promising options against this new virus. miRNAs are small and noncoding RNAs 18–25 nucleotides in length that target the mRNAs to degrade them or obstruct their translation miRNAs act as an observer in cells. This study reviewed the literature on the potential role of cellular miRNAs in the SARS-CoV-2-host interplay as a therapeutic option in COVID-19 patients.

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