Er virale nukleinsyrer inde i eller uden for værtscellerne?

The first step in extracting viral nucleic acids is to isolate viral particles from a sample infected with the virus, and then purify nucleic acids (DNA eller RNA) from these viral particles. Viral nucleic acids are present inside viral particles, while viral particles can be present inside or outside the cells, which depends on the stage of the viral life cycle.

Extracellular viral particles

During the infection process, viruses can replicate and assemble into mature viral particles inside host cells. Once mature, these viral particles are released by cell lysis or budding and distributed in body fluids, secretions or the environment.

Extracellular viral particles contain intact viral nucleic acids, which can be released from viral particles by physical and chemical methods for subsequent purification and analysis.

Intracellular viral particles

In the early stages of the viral life cycle, viral nucleic acids may exist directly in the cytoplasm or nucleus, participating in the replication and transcription of the viral genome.

If the goal is to extract intracellular viral nucleic acids, the host cell membrane needs to be destroyed first to release the viral particles, and then the nucleic acids can be extracted from these viral particles.

Basic steps for viral nucleic acid extraction

Prøvebehandling: lyse cells to release viral particles.

Precipitation or concentration of viral particles: use centrifugation or other methods to separate viral particles from the sample.

Lysis of viral particles: use chemical reagents to destroy the protein capsid of the virus and release nucleic acids.

Nucleic acid purification: fjerne proteiner, lipids and other impurities to purify high-purity viral nucleic acids.

Nucleic acid quantification and quality assessment: use ultraviolet spectroscopy or fluorescence quantification and other techniques to quantify the extracted nucleic acids.

In actual laboratory operations, whether it is intracellular or extracellular viral nucleic acid extraction, similar lysis, purification and protection measures are used to ensure the quality and integrity of the nucleic acids. Imidlertid, the specific operational details and pretreatment steps need to be adjusted according to the different sources of nucleic acids.

Leverandørintroduktion

Shanghai Lingjun Biotechnology Co., Ltd.blev etableret i 2016 som er en professionel producent af biomagnetiske materialer og nukleinsyreekstraktionsreagenser.

Vi har stor erfaring med nukleinsyreisolering og oprensning, proteinoprensning, celleadskillelse, kemiluminescens og andre tekniske områder.

Vores produkter er meget udbredt inden for mange områder, såsom medicinsk test, genetisk testning, universitetsforskning, genetisk avl, osv. Vi leverer ikke kun produkter, men kan også påtage os OEM, ODM, og andre behov. Hvis du har relaterede behov, er du velkommen til at kontakte os påsales01@lingjunbio.com.