Virus and endogenous viral element–derived small non-coding RNAs and their roles in insect–virus interaction

2021 ◽  
Author(s):  
Zhi-zhi Wang ◽  
Xi-qian Ye ◽  
Jian-hua Huang ◽  
Xue-xin Chen
Keyword(s):  
Insect Virus ◽  
Virus Interaction ◽  
Non Coding Rnas

scholarly journals Non-retroviral endogenous viral element limits cognate virus replication in Aedes aegypti ovaries

2020 ◽  
Author(s):  
Yasutsugu Suzuki ◽  
Artem Baidaliuk ◽  
Pascal Miesen ◽  
Lionel Frangeul ◽  
Anna B. Crist ◽  
...  
Keyword(s):  
Aedes Aegypti ◽  
Virus Replication ◽  
Insect Virus ◽  
Functional Link ◽  
Naturally Occurring ◽  
Specific Virus ◽  
Virus Interaction ◽  
Endogenous Viral Elements ◽  
Viral Sequences

SummaryEndogenous viral elements (EVEs) are viral sequences integrated in host genomes. A large number of non-retroviral EVEs was recently detected in Aedes mosquito genomes, leading to the hypothesis that mosquito EVEs may control exogenous infections by closely related viruses. Here, we experimentally investigated the role of an EVE naturally found in Aedes aegypti populations and derived from the widespread insect-specific virus, cell-fusing agent virus (CFAV). Using CRISPR/Cas9 genome editing, we created an Ae. aegypti line lacking the CFAV EVE. Absence of the EVE resulted in increased CFAV replication in ovaries, possibly modulating vertical transmission of the virus. Viral replication was controlled by targeting of viral RNA by EVE-derived piRNAs. Our results provide evidence that antiviral piRNAs are produced in the presence of a naturally occurring EVE and its cognate virus, demonstrating a functional link between non-retroviral EVEs and antiviral immunity in a natural insect-virus interaction.

Periodic Structure in the Matrix Protein of an Insect Virus

1982 ◽  
Vol 40 ◽  
pp. 302-303
Author(s):  
H.M. Mazzone ◽  
W.F. Engler ◽  
R. Zerillo ◽  
G.F. Bahr
Keyword(s):  
Inclusion Body ◽  
Periodic Structure ◽  
Matrix Protein ◽  
Malacosoma Disstria ◽  
Insect Virus ◽  
Virus Particles ◽  
The Matrix ◽  
Nucleopolyhedrosis Virus

The nucleopolyhedrosis virus (NPV) of the forest tent cater - pillar (Malacosoma disstria Hubner) has been analyzed in our laboratories. As a representative of the Baculovirus class, the NPV has virus particles enclosed with in a proteinaceous structure, the inclusion body.

Long Non-Coding RNAs Are Commonly Deregulated in Hodgkin Lymphoma

2014 ◽  
Vol 226 (02) ◽  
Author(s):  
A van den Berg ◽  
M Tayari ◽  
G Kortman ◽  
J Sietzema ◽  
D de Jong ◽  
...  
Keyword(s):  
Hodgkin Lymphoma ◽  
Non Coding Rnas

MicroRNAs and their role in hematological malignant diseases

2012 ◽  
Vol 153 (52) ◽  
pp. 2051-2059 ◽  
Author(s):  
Zsuzsanna Gaál ◽  
Éva Oláh
Keyword(s):  
Target Genes ◽  
Lymphoblastic Leukemia ◽  
Cancer Tissue ◽  
Altered Expression ◽  
Diagnosis And Prognosis ◽  
Oncologic Patients ◽  
Different Types ◽  
Non Coding Rnas ◽  
Success Of Treatment ◽  
Posttranscriptional Level

MicroRNAs are a class of small non-coding RNAs regulating gene expression at posttranscriptional level. Their target genes include numerous regulators of cell cycle, cell proliferation as well as apoptosis. Therefore, they are implicated in the initiation and progression of cancer, tissue invasion and metastasis formation as well. MicroRNA profiles supply much information about both the origin and the differentiation state of tumours. MicroRNAs also have a key role during haemopoiesis. An altered expression level of those have often been observed in different types of leukemia. There are successful attempts to apply microRNAs in the diagnosis and prognosis of acute lymphoblastic leukemia and acute myeloid leukemia. Measurement of the expression levels may help to predict the success of treatment with different kinds of chemotherapeutic drugs. MicroRNAs are also regarded as promising therapeutic targets, and can contribute to a more personalized therapeutic approach in haemato-oncologic patients. Orv. Hetil., 2012, 153, 2051–2059.

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