Methods for detection of molecular interactions, such as protein/protein or small molecule/protein interactions, are described.

The present invention provides compositions comprising cellular receptor mimics and methods for treating or preventing coronavirus infection or a disease or disorder associated with coronavirus infection such as COVID-19.

The present invention relates to a conjugate comprising a first peptide of sequence CNGRCG (SEQ ID NO: 1) linked to the N-terminus of a protein and a compound X linked to the N-terminus of said peptide and to related medical uses.

The present invention provides compositions comprising Trabectedin or a tTF-NGR protein for use in the treatment of cancer in an individual, wherein the treatment comprises the following steps: (a) administering to the individual an effective amount of a composition comprising Trabectedin, and (b) subsequently administering to the individual an effective amount of a composition comprising a tTF-NGR protein.

The present invention provides a pAPN mutant and a composition for site-directed modification of pAPN gene and application thereof, involving the field of gene editing technology. The mutated pAPN mutant with an alanine at position 734 can maintain its normal expression, while reducing the ability of a host expressing the pAPN mutant to specifically bind to TGEV, which has important scientific and practical significance in pig disease resistance breeding.

This description relates to a substance causing a mutation at position 727 in an amino acid residue of the pAPN protein in any of the following: 1) constructing a cell line with site-directed modification of the pAPN gene for non-disease diagnostic and therapeutic purposes; 2) preparing a cell with resistance to the porcine transmissible gastroenteritis virus; and so on. A system for site-directed modification of the pAPN gene may effectively cleave two target sites of the pAPN gene, thereby achieving the precise mutation at position 727 in an amino acid of pAPN. Based on the precise modification of the pAPN gene while capable of avoiding disruption or alteration of the normal expression of other amino acids in the pAPN, the physiological activity function of pAPN protein on the basis of resisting TGEV infection is retained.

The present invention provides a pAPN mutant and a composition for site-directed modification of pAPN gene and application thereof, involving the field of gene editing technology. The mutated pAPN mutant with an alanine at position 734 can maintain its normal expression, while reducing the ability of a host expressing the pAPN mutant to specifically bind to TGEV, which has important scientific and practical significance in pig disease resistance breeding.

An object of the present invention is to provide a fluorescent probe that can be used in an enzyme activity detection method. According to the present invention, there is provided a fluorescent probe for detecting a hydrolase, the fluorescent probe containing a compound having at least one water-soluble substituent selected from the group consisting of CO.sub.2H, PO.sub.3H.sub.2, and SO.sub.3H and represented by General Formula (II), or a salt thereof. The fluorescent probe of the present invention can be used in an enzyme activity detection method using a microdevice.

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