Research Project

Integrated Wet–Dry Analysis of SARS-CoV-2 Spike RBD Expression and Host Interaction Targets

From transient mammalian-cell expression optimization to machine-learning-guided production prediction and topology-to-structure host-target screening.

This project brings together an experimental foundation for SARS-CoV-2 Spike receptor-binding domain (RBD) production with two computational extensions. The wet-lab branch establishes how transfection strategy and construct design shape recombinant RBD output, while the dry-lab branches turn sequence features and interaction data into actionable guidance for expression control and host-target prioritization. Across the full page, the project should read as one integrated research pipeline rather than three disconnected mini-studies.

Affiliation

School of Pharmaceutical Sciences, Wuhan University

Project Period

Jul 2025 – Present

Group Leader

Linyi Jiang

Research Scope on This Page

wet-lab foundation + dry-lab extension

This page presents an integrated SARS-CoV-2 RBD workflow that combines experimental expression logic with current computational modeling and interactome analysis.

SARS-CoV-2 Spike RBD Protein Expression HEK293F Transfection Optimization Machine Learning Expression Prediction Virus–Host Interactome AlphaFold-Multimer
185

RBD mutant records

1,109

interaction records

57

core host proteins

84.38%

predicted high-expression probability for B678

Research narrative viewer

From Transfection Feasibility to Detectable RBD Expression

This section shows how the project first made transient expression experimentally controllable, moving from transfection feasibility to blot-based validation of recombinant SARS-CoV-2 RBD production.

Four-panel scientific image comparing PEI and liposome delivery across RKO and SW480 cells with bright-field and fluorescence views.
PPT 01 1 of 2 in Experimental Foundation
Experimental Foundation / Step 1

Comparing Delivery Modes in Mammalian Cells

Before the final RBD production workflow was locked in, the project first treated transfection as a platform problem. The image compares PEI and liposome-based delivery across two adherent mammalian cell lines, pairing bright-field and fluorescence views to make transfection behavior visually readable. On the webpage, this figure should be positioned as a methodological prelude: it shows the logic of delivery comparison and signal readout rather than the final production system itself.

The point of this image is not to claim that these exact cell lines became the final manufacturing platform, but to establish a key experimental lesson: protein-expression work only becomes reliable after delivery efficiency is made visible and controllable. This figure therefore opens the narrative by framing transfection as the first bottleneck in the larger RBD workflow.

  • Side-by-side PEI vs liposome comparison.
  • Bright-field and fluorescence readouts shown together.
  • Used here as a feasibility / method-selection visual.
  • Establishes delivery efficiency as the first controllable variable.

A methodological opening image: before optimizing protein yield, the workflow first makes transfection performance observable.