A method of producing a picornavirus-like particle (PVLP) in a plant is provided. The method comprises introducing a first nucleic acid and a second nucleic acid into the plant, portion of the plant, or a plant cell. The first nucleic acid comprising a first regulatory region active in the plant operatively linked to a nucleotide sequence encoding a polyprotein. The second nucleic acid comprises a second regulatory region active in the plant and operatively linked to a nucleotide sequence encoding one or more protease. The plant, portion of the plant, or plant cell is incubated under conditions that permit the expression of the nucleic acids, thereby producing the PVLP. A PVLP comprising the polyprotein is also provided.

A gene-modified coxsackievirus that is to be used in oncolytic virotherapy and is improved in safety and/or aggressiveness is provided. A gene-modified coxsackievirus that contains a mutated genome with a coxsackievirus B3 wild-type (CVB3-WT) genome inserted with at least one polynucleotide constituted of a target sequence for at least one of either of miR-34a and miR-34c and is suppressed in proliferation in normal cells is provided.

The present invention related to an infectious complementary DNA (cDNA) construct characterized in that the cDNA comprises: the cDNA of the CVB3 genomic RNA sequence of a Coxsackievirus B3 (CVB3); at least one or more microRNA target sequences (miR-TS), which are complementary to one or more microRNAs having tissue-specific expression pattern, wherein the at least one or more miR-TS are integrated immediately adjacent of the 5UTR and/or the 3UTR of the CVB3 protein coding sequence.

The disclosure provides nanoparticle and compound compositions and methods of making and using the same to a nucleic acid encoding a protein, antibody, or functional fragment thereof for administration to a subject. Various nanoparticle carriers are described. In some instances, the nanoparticle component may include a hydrophobic core having an inorganic particle, and optionally a membrane having a cationic lipid.

The Coxsackievirus B3 (CVB3) vaccine including a mutant strain of Coxsackievirus B3 (CVB3) (SEQ ID NO: 1) has specific double mutations introduced in the Internal Ribosome Entry Segment (IRES) region of the wild type Coxsackievirus B3 (CVB3) genome in the nucleotide positions 473 (in which uracil is substituted for cytosine) and 475 (in which cytosine is substituted for uracil). The resulting double mutant (SEQ ID NO: 1) demonstrates a significant decrease in its replicative capacity and a drastic decrease in its translation efficiency compared to the wild-type Coxsackievirus B3 (CVB3) strain.

The present disclosure relates to a recombinant nucleic acid molecule based on point mutation of translation initiation element and use thereof in the preparation of circular RNA, and in particular to a recombinant nucleic acid molecule for preparing circular RNA, a recombinant expression vector, circular RNA, a composition, a method for preparing circular RNA, a method for expressing a target polypeptide in a cell, a method for preventing or treating a disease, a method for editing a translation initiation element sequence, and a system for editing a translation initiation element sequence. The recombinant nucleic acid molecule provided by the present disclosure provides a novel Clean PIE system for the in vitro preparation of circular RNA, which can avoid introducing additional exon sequences into circular RNA, improve sequence accuracy of circular RNA molecules, reduce changes in a secondary structure of circular RNA, and then reduce immunogenicity of circular RNA, and has a good application prospect in the fields of nucleic acid vaccines, expression of therapeutic proteins, gene therapy, etc.

Disclosed herein are recombinant polypeptides derived from FBP1 and FBP2. Also disclosed herein are recombinant expression vectors and recombinant host cells for producing the aforesaid recombinant polypeptides. The recombinant polypeptides are proven to be useful and effective in producing a picornavirus with a type I internal ribosome entry site (IRES), so as to facilitate the preparation of a viral vaccine.

The present invention relates to a cancer initiating cell comprising an isolated coxsackievirus and adenovirus receptor positive mouse pulmonary stem/progenitor cell that overexpresses Oct-4.

The present disclosure provides coxsackievirus B (CVB) compositions and methods of use of such compositions to induce an immune response to CVB in an individual.

A transkingdom platform for the delivery of therapeutics to target cells. The system maintains the export and uptake functions of Inv while modifying its targeting away from 1 integrin to other proteins expressed on the surface of target eukaryotic cells (i.e., a cell surface protein) or chemical moieties (i.e., a cell surface chemical moiety) expressed on the surface of a target eukaryotic cell by replacing D4 and D5 of Inv with a binding domain from a heterologous protein via genetic engineering. These heterologous proteins could be derived from bacterial, fungal, animal, or viral genomes. This engineering would result in the construction of a chimeric Inv protein in which D1-D3 (i.e., the non-binding domains) are fused in frame to an alternative binding domain derived from a heterologous protein. The alternative binding domain would interact with a different cell surface protein or chemical moiety, which can in some instances be referred to as a receptor, on the surface on the surface of a eukaryotic cell, thereby allowing specific targeting to cells independent of Inv's intrinsic 1 integrin binding.