Advance Journal of Virology, Epidemic and Pandemic Diseases

Perspective - (2022) Volume 7, Issue 4

Structured illumination for virus and transfer of viral replication at the virological synapse
Lil Chen*
Department of Bimolecular Photonics and Physics, Bielefeld University, Bielefeld, Germany
*Correspondence: Lil Chen, Department of Bimolecular Photonics and Physics, Bielefeld University, Bielefeld, Germany,

Received: 21-Nov-2022, Manuscript No. AJVEPD-22-84217; Editor assigned: 25-Nov-2022, Pre QC No. AJVEPD-22-84217 (PQ); Reviewed: 09-Dec-2022, QC No. AJVEPD-22-84217; Revised: 16-Dec-2022, Manuscript No. AJVEPD-22-84217 (R); Published: 26-Dec-2022, DOI: 10.51268/2937-2709.22.07.018


High-speed and high-resolution optical fluorescence microscopy of living, virus-infected cells is still a challenge for most infectious disease research laboratories, as this typically requires the installation of expensive, bulky, and maintenance-intensive equipment (e.g. laser-scanning microscopes) in high-level biosafety laboratories. Imaging individual cells with high speed and high spatial (albeit diffraction-limited) resolution currently necessitates the use of high numerical aperture microscope objective lenses (NA). However, only highly sensitive fluorescence microscopes can track single fluorescent viruses measuring 120 nm or less in size, and only super-resolution optical microscopes can resolve such viruses in living cells.

Since a virus affects and spreads between immune cells, which are typically non - adherent and circulate in the blood at high speed, imaging the transfer of individual HIV particles at direct cell-to-cell contacts between T cells via fluorescence microscopy is particularly difficult. Even when separated from the blood, these cells remain highly motile, capable of translating, rolling, or rotating on a millisecond to second timescale. HIV causes the acquired immune deficiency Syndrome (AIDS). There are several commercial systems available for advanced fluorescence microscopy that also includes sophisticated contrast generating techniques, such as optical super-resolution imaging. However, for a single research group or small facility, the cost of installing and operating just one such advanced imaging system, let alone several systems, is frequently prohibitively expensive. Thus, various concepts were developed to democratize fluorescence microscopy and enable their installation and operation in challenging environments. Cost-effective and easily replicable solutions are ideal for this purpose.

The HIV propagation pathway such as through virological synapses (VS) is still being studied, and it is unclear how cell-cell interactions contribute to the infectious process. The term "responsibility" refers to the act of determining whether or not a person is responsible for the actions of another person. The interaction of the viral envelope glycoprotein on the surface of the infected cell and the CD4 receptor expressed by the target cell initiates the in the case of T cell-to-T cell transfer. The virus then congregates specifically, and is endocytosis by an uninfected cell. In its most basic form multimolecular structure that forms after physical contact between a retrovirus-infected cell and an uninfected target cell to facilitate virus transmission. For HIV-1 infected T cells, this is characterized by the following characteristics of a stable intercellular junction between an infected cell and an uninfected organelle.

With this in imagination, consider the definition of HIV-1 polysynapses, which are conjugates formed between a single infected T cell and multiple uninfected targets. Gag accumulates in infected T cells at interfaces formed by multiple attached target cells during polysynapse formation. Development of a cost-effective, compact, high-speed and high-resolution fluorescence microscope of living T cells developed a compact fluorescence microscope, which was specifically designed to provide diffraction-limited optical resolution, high sensitivity, and high-speed imaging while still utilising cost-efficient components.

The system is similar to an open-frame wide-field fluorescence microscopy setup that has been specifically optimized for fast 3D image acquisition. T cells can take on a highly polarized morphology, with a sharp end in the front and swelling at the back end, recognized as uropod.

Get the App